1d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/* 270f10482c668301c483acded13bf68780ad352b9Pierre Ossman * linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver 3d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * 4b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. 5d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * 6d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * This program is free software; you can redistribute it and/or modify 7643f720cea989d2913fc0120a2384fecc1be1f9aPierre Ossman * it under the terms of the GNU General Public License as published by 8643f720cea989d2913fc0120a2384fecc1be1f9aPierre Ossman * the Free Software Foundation; either version 2 of the License, or (at 9643f720cea989d2913fc0120a2384fecc1be1f9aPierre Ossman * your option) any later version. 1084c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * 1184c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * Thanks to the following companies for their support: 1284c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * 1384c46a53fc4ea4ff36df783a20187b2f65dd21ccPierre Ossman * - JMicron (hardware and technical support) 14d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 15d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/delay.h> 17d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/highmem.h> 18b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman#include <linux/io.h> 1988b47679746b81534002bcba42da97ab82b5d12aPaul Gortmaker#include <linux/module.h> 20d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/dma-mapping.h> 215a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 22117636092a87a28a013a4acb5de5492645ed620fRalf Baechle#include <linux/scatterlist.h> 239bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski#include <linux/regulator/consumer.h> 2466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#include <linux/pm_runtime.h> 25d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 262f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#include <linux/leds.h> 272f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2822113efd00491310da802f3b1a9a66cfcf415facAries Lee#include <linux/mmc/mmc.h> 29d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include <linux/mmc/host.h> 30473b095a72a95ba719905b1f2e82cd18d099a427Aaron Lu#include <linux/mmc/card.h> 31bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski#include <linux/mmc/slot-gpio.h> 32d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 33d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#include "sdhci.h" 34d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 35d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DRIVER_NAME "sdhci" 36d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 37d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#define DBG(f, x...) \ 38c65631781eb0f2e81865017c1484e9aef76e1b61Russell King pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) 39d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 40f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#if defined(CONFIG_LEDS_CLASS) || (defined(CONFIG_LEDS_CLASS_MODULE) && \ 41f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman defined(CONFIG_MMC_SDHCI_MODULE)) 42f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#define SDHCI_USE_LEDS_CLASS 43f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#endif 44f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman 45b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath#define MAX_TUNING_LOOP 40 46b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 47d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King#define ADMA_SIZE ((128 * 2 + 1) * 4) 48d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King 49df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanstatic unsigned int debug_quirks = 0; 5066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic unsigned int debug_quirks2; 516743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 52d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 53d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 54d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 55069c9f142822d552ec885572945d8bce9eff0519Girish K Sstatic int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); 56cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data); 5752983382c74f59a3953e622d7661a24e1bc4388aKevin Liustatic void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); 58d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 5966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 6066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host); 6166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host); 62f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_on(struct sdhci_host *host); 63f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_off(struct sdhci_host *host); 6466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#else 6566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_get(struct sdhci_host *host) 6666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 6866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 6966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_put(struct sdhci_host *host) 7066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 7166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 7266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 73f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_on(struct sdhci_host *host) 74f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 75f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 76f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_off(struct sdhci_host *host) 77f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 78f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 7966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 8066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 81d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 82d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 83a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n", 84412ab659b2bdad6afac8f84daf2a8a393145dcaePhilip Rakity mmc_hostname(host->mmc)); 85d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 86a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 874e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_DMA_ADDRESS), 884e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_HOST_VERSION)); 89a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 904e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_SIZE), 914e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_COUNT)); 92a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 934e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_ARGUMENT), 944e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_TRANSFER_MODE)); 95a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 964e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_PRESENT_STATE), 974e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_HOST_CONTROL)); 98a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 994e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_POWER_CONTROL), 1004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL)); 101a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 1024e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_WAKE_UP_CONTROL), 1034e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_CLOCK_CONTROL)); 104a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 1054e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_TIMEOUT_CONTROL), 1064e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_STATUS)); 107a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 1084e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_ENABLE), 1094e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_SIGNAL_ENABLE)); 110a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 1114e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_ACMD12_ERR), 1124e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_SLOT_INT_STATUS)); 113a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Caps: 0x%08x | Caps_1: 0x%08x\n", 1144e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_CAPABILITIES), 115e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1)); 116a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Cmd: 0x%08x | Max curr: 0x%08x\n", 117e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readw(host, SDHCI_COMMAND), 1184e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_MAX_CURRENT)); 119a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Host ctl2: 0x%08x\n", 120f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_readw(host, SDHCI_HOST_CONTROL2)); 121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 122be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks if (host->flags & SDHCI_USE_ADMA) 123a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n", 124be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ERROR), 125be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ADDRESS)); 126be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks 127a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": ===========================================\n"); 128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 134d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1367260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_set_card_detection(struct sdhci_host *host, bool enable) 1377260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1385b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King u32 present; 1397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 140c79396c191bc19703df6eb6bbd0f673ed0df6c9dAdrian Hunter if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || 14187b87a3fc0eec58d95e4216392f889a26439ad22Daniel Drake (host->mmc->caps & MMC_CAP_NONREMOVABLE)) 14266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return; 14366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1445b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King if (enable) { 1455b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 1465b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King SDHCI_CARD_PRESENT; 147d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 1485b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King host->ier |= present ? SDHCI_INT_CARD_REMOVE : 1495b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King SDHCI_INT_CARD_INSERT; 1505b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King } else { 1515b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King host->ier &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT); 1525b4f1f6c496aa3a90b617d1319274bf2017e639dRussell King } 153b537f94ce19583de1882f539a5cc49aa99260acaRussell King 154b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 155b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 1567260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1577260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1587260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_enable_card_detection(struct sdhci_host *host) 1597260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1607260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, true); 1617260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1627260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1637260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_disable_card_detection(struct sdhci_host *host) 1647260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1657260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, false); 1667260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1677260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 16803231f9b781f24205c0af0398ce3cbef70090939Russell Kingvoid sdhci_reset(struct sdhci_host *host, u8 mask) 169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 170e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman unsigned long timeout; 171393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity 1724e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); 173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 174f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (mask & SDHCI_RESET_ALL) { 175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = 0; 176f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter /* Reset-all turns off SD Bus Power */ 177f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) 178f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter sdhci_runtime_pm_bus_off(host); 179f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter } 180d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 181e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* Wait max 100 ms */ 182e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout = 100; 183e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 184e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* hw clears the bit when it's done */ 1854e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) { 186e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (timeout == 0) { 187a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Reset 0x%x never completed.\n", 188e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mmc_hostname(host->mmc), (int)mask); 189e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman sdhci_dumpregs(host); 190e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman return; 191e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman } 192e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout--; 193e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mdelay(1); 194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 19503231f9b781f24205c0af0398ce3cbef70090939Russell King} 19603231f9b781f24205c0af0398ce3cbef70090939Russell KingEXPORT_SYMBOL_GPL(sdhci_reset); 19703231f9b781f24205c0af0398ce3cbef70090939Russell King 19803231f9b781f24205c0af0398ce3cbef70090939Russell Kingstatic void sdhci_do_reset(struct sdhci_host *host, u8 mask) 19903231f9b781f24205c0af0398ce3cbef70090939Russell King{ 20003231f9b781f24205c0af0398ce3cbef70090939Russell King if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { 20103231f9b781f24205c0af0398ce3cbef70090939Russell King if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & 20203231f9b781f24205c0af0398ce3cbef70090939Russell King SDHCI_CARD_PRESENT)) 20303231f9b781f24205c0af0398ce3cbef70090939Russell King return; 20403231f9b781f24205c0af0398ce3cbef70090939Russell King } 205063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 20603231f9b781f24205c0af0398ce3cbef70090939Russell King host->ops->reset(host, mask); 207393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity 208da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (mask & SDHCI_RESET_ALL) { 209da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 210da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (host->ops->enable_dma) 211da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King host->ops->enable_dma(host); 212da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King } 213da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King 214da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King /* Resetting the controller clears many */ 215da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King host->preset_enabled = false; 2163abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie } 217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2192f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); 2202f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2212f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_init(struct sdhci_host *host, int soft) 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2232f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) 22403231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA); 2252f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre else 22603231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_ALL); 227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 228b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 229b537f94ce19583de1882f539a5cc49aa99260acaRussell King SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | 230b537f94ce19583de1882f539a5cc49aa99260acaRussell King SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC | 231b537f94ce19583de1882f539a5cc49aa99260acaRussell King SDHCI_INT_TIMEOUT | SDHCI_INT_DATA_END | 232b537f94ce19583de1882f539a5cc49aa99260acaRussell King SDHCI_INT_RESPONSE; 233b537f94ce19583de1882f539a5cc49aa99260acaRussell King 234b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 235b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 2362f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2372f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) { 2382f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre /* force clock reconfiguration */ 2392f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre host->clock = 0; 2402f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_set_ios(host->mmc, &host->mmc->ios); 2412f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre } 2427260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 243d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2447260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_reinit(struct sdhci_host *host) 2457260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 2462f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 247b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu /* 248b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * Retuning stuffs are affected by different cards inserted and only 249b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * applicable to UHS-I cards. So reset these fields to their initial 250b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * value when card is removed. 251b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu */ 252973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 253973905feab85416784f36cc94b868392fd465ef4Aaron Lu host->flags &= ~SDHCI_USING_RETUNING_TIMER; 254973905feab85416784f36cc94b868392fd465ef4Aaron Lu 255b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu del_timer_sync(&host->tuning_timer); 256b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu host->flags &= ~SDHCI_NEEDS_RETUNING; 257b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu host->mmc->max_blk_count = 258b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 259b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu } 2607260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 262d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 263d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 264d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 265d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 266d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2674e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 268d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 2694e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 270d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 271d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 272d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 273d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2764e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 2784e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 279d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 281f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 2822f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanstatic void sdhci_led_control(struct led_classdev *led, 2832f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman enum led_brightness brightness) 2842f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman{ 2852f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman struct sdhci_host *host = container_of(led, struct sdhci_host, led); 2862f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman unsigned long flags; 2872f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 2882f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2892f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 29066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 29166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 29266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2932f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (brightness == LED_OFF) 2942f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_deactivate_led(host); 2952f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman else 2962f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_activate_led(host); 29766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterout: 2982f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2992f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman} 3002f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 3012f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 302d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 303d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 304d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 305d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 306d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 307d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 308a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3107659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3117659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3127244b85bd17313d7d300ee93ec7bfbca1f4ccf3dSteven Noonan u32 uninitialized_var(scratch); 3137659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 314d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 315a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 317a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3187659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 319d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3207659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 322a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3237659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3247659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 325d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3267659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3287659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3297659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 33014d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 3317659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 332d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3337659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3347659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (chunk == 0) { 3354e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov scratch = sdhci_readl(host, SDHCI_BUFFER); 3367659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 4; 337a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3387659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3397659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman *buf = scratch & 0xFF; 3407659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3417659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3427659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch >>= 8; 3437659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk--; 3447659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 345d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 346a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3477659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3487659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3497659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 351a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 352d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 353a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 354a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 3557659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3567659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3577659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u32 scratch; 3587659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 359d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 360a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 361a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 362a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3637659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3647659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3667659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 368a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3697659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3707659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 371a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 3737659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3747659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3757659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 3767659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3777659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3797659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3807659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch |= (u32)*buf << (chunk * 8); 3817659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3827659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3837659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk++; 3847659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 3857659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3867659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if ((chunk == 4) || ((len == 0) && (blksize == 0))) { 3874e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, scratch, SDHCI_BUFFER); 3887659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3897659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 390d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 391d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 392d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 3937659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3947659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3957659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3967659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 397a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 398a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 399a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 400a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 401a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 402a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 403a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 404a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 4057659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 406a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 407a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 408a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 409a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 410a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 411a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 412a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 4134a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman /* 4144a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * Some controllers (JMicron JMB38x) mess up the buffer bits 4154a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * for transfers < 4 bytes. As long as it is just one block, 4164a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * we can ignore the bits. 4174a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman */ 4184a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) && 4194a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman (host->data->blocks == 1)) 4204a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman mask = ~0; 4214a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman 4224e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 4233e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY) 4243e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov udelay(100); 4253e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov 426a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 427a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 428a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 429a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 430d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4317659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks--; 4327659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 433a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 434a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 435d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 436a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 437d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 438d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) 4402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_save(*flags); 442482fce997e143a8d5429406fe066d31aa76ef70aCong Wang return kmap_atomic(sg_page(sg)) + sg->offset; 4432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) 4462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 447482fce997e143a8d5429406fe066d31aa76ef70aCong Wang kunmap_atomic(buffer); 4482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_restore(*flags); 4492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 451118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooksstatic void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd) 452118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks{ 4539e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le32 *dataddr = (__le32 __force *)(desc + 4); 4549e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le16 *cmdlen = (__le16 __force *)desc; 455118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4569e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks /* SDHCI specification says ADMA descriptors should be 4 byte 4579e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks * aligned, so using 16 or 32bit operations should be safe. */ 458118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4599e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[0] = cpu_to_le16(cmd); 4609e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[1] = cpu_to_le16(len); 4619e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks 4629e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks dataddr[0] = cpu_to_le32(addr); 463118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks} 464118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4658f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanstatic int sdhci_adma_table_pre(struct sdhci_host *host, 4662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 4672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 4692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *desc; 4712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 4722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t addr; 4732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t align_addr; 4742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int len, offset; 4752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 4772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i; 4782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 4792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 4802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The spec does not specify endianness of descriptor table. 4832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We currently guess that it is LE. 4842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 4872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 4882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 4892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 4902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr = dma_map_single(mmc_dev(host->mmc), 4922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer, 128 * 4, direction); 4938d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr)) 4948f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto fail; 4952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->align_addr & 0x3); 4962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->sg_count = dma_map_sg(mmc_dev(host->mmc), 4982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg, data->sg_len, direction); 4998f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->sg_count == 0) 5008f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_align; 5012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc = host->adma_desc; 5032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 5042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr = host->align_addr; 5062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 5082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr = sg_dma_address(sg); 5092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len = sg_dma_len(sg); 5102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The SDHCI specification states that ADMA 5132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * addresses must be 32-bit aligned. If they 5142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * aren't, then we use a bounce buffer for 5152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * the (up to three) bytes that screw up the 5162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment. 5172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman offset = (4 - (addr & 0x3)) & 0x3; 5192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (offset) { 5202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 5226cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 5232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(align, buffer, offset); 5242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 5252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 527118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 528118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, align_addr, offset, 0x21); 5292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(offset > 65536); 5312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 5332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr += 4; 5342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr += offset; 5382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len -= offset; 5392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(len > 65536); 5422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 543118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 544118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, addr, len, 0x21); 5452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * If this triggers then we have a calculation bug 5492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * somewhere. :/ 5502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 551d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King WARN_ON((desc - host->adma_desc) > ADMA_SIZE); 5522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 55470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) { 55570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 55670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Mark the last descriptor as the terminating descriptor 55770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 55870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (desc != host->adma_desc) { 55970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc -= 8; 56070764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc[0] |= 0x2; /* end */ 56170764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 56270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } else { 56370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 56470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Add a terminating entry. 56570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 5662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 56770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* nop, end, valid */ 56870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham sdhci_set_adma_desc(desc, 0, 0, 0x3); 56970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 5702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Resync align buffer as we might have changed it. 5732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_single_for_device(mmc_dev(host->mmc), 5762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr, 128 * 4, direction); 5772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5798f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return 0; 5808f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 5818f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_align: 5828f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 5838f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 128 * 4, direction); 5848f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanfail: 5858f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return -EINVAL; 5862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 5872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_adma_table_post(struct sdhci_host *host, 5892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 5902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 5912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 5922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 5942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i, size; 5952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 5962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 5972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 598de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King bool has_unaligned; 5992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 6012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 6022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 6032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 6042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 6062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 128 * 4, direction); 6072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 608de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King /* Do a quick scan of the SG list for any unaligned mappings */ 609de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King has_unaligned = false; 610de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King for_each_sg(data->sg, sg, host->sg_count, i) 611de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King if (sg_dma_address(sg) & 3) { 612de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King has_unaligned = true; 613de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King break; 614de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King } 615de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King 616de0b65a786ae83c8f6dfb712f65b9a36af70a981Russell King if (has_unaligned && data->flags & MMC_DATA_READ) { 6172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg, 6182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 6212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 6232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg_dma_address(sg) & 0x3) { 6242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman size = 4 - (sg_dma_address(sg) & 0x3); 6252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 6276cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 6282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(buffer, align, size); 6292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 6302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 6322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 6372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 6392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 640a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) 641d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 6421c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 643a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 6441c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 645d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 646ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* 647ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * If the host controller provides us with an incorrect timeout 648ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * value, just skip the check and use 0xE. The hardware may take 649ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * longer to time out, but that's much better than having a too-short 650ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * timeout value. 651ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman */ 65211a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) 653ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return 0xE; 654e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 655a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* Unspecified timeout, assume max */ 6561d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson if (!data && !cmd->busy_timeout) 657a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin return 0xE; 658d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 659a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* timeout in us */ 660a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 6611d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson target_timeout = cmd->busy_timeout * 1000; 66278a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko else { 66378a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout = data->timeout_ns / 1000; 66478a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko if (host->clock) 66578a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout += data->timeout_clks / host->clock; 66678a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko } 66781b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov 6681c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 6691c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 6701c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 6711c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 6721c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 6731c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 6741c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 6751c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 6761c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 6771c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 6781c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 6791c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 6801c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 6811c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 6821c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 6831c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 6841c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 6851c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6861c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 6871c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 68809eeff52bf20d485bcafc441f01c142c59c3da16Chris Ball DBG("%s: Too large timeout 0x%x requested for CMD%d!\n", 68909eeff52bf20d485bcafc441f01c142c59c3da16Chris Ball mmc_hostname(host->mmc), count, cmd->opcode); 6901c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 6911c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 6921c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 693ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return count; 694ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman} 695ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 6966aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsovstatic void sdhci_set_transfer_irqs(struct sdhci_host *host) 6976aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov{ 6986aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL; 6996aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR; 7006aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 7016aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov if (host->flags & SDHCI_REQ_USE_DMA) 702b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier = (host->ier & ~pio_irqs) | dma_irqs; 7036aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov else 704b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier = (host->ier & ~dma_irqs) | pio_irqs; 705b537f94ce19583de1882f539a5cc49aa99260acaRussell King 706b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 707b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 7086aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov} 7096aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 710b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dongstatic void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) 711ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman{ 712ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman u8 count; 713b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong 714b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong if (host->ops->set_timeout) { 715b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong host->ops->set_timeout(host, cmd); 716b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong } else { 717b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong count = sdhci_calc_timeout(host, cmd); 718b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); 719b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong } 720b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong} 721b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong 722b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dongstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) 723b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong{ 7242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 ctrl; 725a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 7268f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman int ret; 727ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 728ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman WARN_ON(host->data); 729ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 730b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong if (data || (cmd->flags & MMC_RSP_BUSY)) 731b45e668af4439bfc52ed92af44b6400661ba7ec8Aisheng Dong sdhci_set_timeout(host, cmd); 732a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin 733a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 734ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return; 735ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 736ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* Sanity checks */ 737ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 738ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 739ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blocks > 65535); 740ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 741ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data = data; 742ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data_early = 0; 743f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = 0; 744ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 745a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) 746c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman host->flags |= SDHCI_REQ_USE_DMA; 747c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 7482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * FIXME: This doesn't account for merging when mapping the 7502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * scatterlist. 7512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) 7622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 7672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->length & 0x3) { 7682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 7692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "transfer size (%d)\n", 7702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sg->length); 7712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 7732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 776c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 777c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 778c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman /* 779c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * The assumption here being that alignment is the same after 780c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * translation to device address space. 781c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman */ 7822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * As we use 3 byte chunks to work around 7902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment problems, we need to check this 7912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * quirk. 7922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) 7972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 8002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 8012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 8022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->offset & 0x3) { 8032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 8042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "bad alignment\n"); 8052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 8072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 8128f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 8138f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_USE_ADMA) { 8148f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman ret = sdhci_adma_table_pre(host, data); 8158f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (ret) { 8168f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8178f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8188f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8198f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8208f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 821ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8228f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 8234e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, host->adma_addr, 8244e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_ADMA_ADDRESS); 8258f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8268f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 827c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler int sg_cnt; 8288f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 829c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler sg_cnt = dma_map_sg(mmc_dev(host->mmc), 8308f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg, data->sg_len, 8318f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman (data->flags & MMC_DATA_READ) ? 8328f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_FROM_DEVICE : 8338f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_TO_DEVICE); 834c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler if (sg_cnt == 0) { 8358f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8368f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8378f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8388f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8398f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 840ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8418f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 842719a61b452ff74cf81a96e4212748d9d63bcc924Pierre Ossman WARN_ON(sg_cnt != 1); 8434e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, sg_dma_address(data->sg), 8444e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_DMA_ADDRESS); 8458f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8468f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8478f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8488f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 8492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 8502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Always adjust the DMA selection as some controllers 8512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (e.g. JMicron) can't do PIO properly when the selection 8522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * is ADMA. 8532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 8542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->version >= SDHCI_SPEC_200) { 8554e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 8562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl &= ~SDHCI_CTRL_DMA_MASK; 8572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->flags & SDHCI_REQ_USE_DMA) && 8582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) 8592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_ADMA32; 8602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 8612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_SDMA; 8624e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 863c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 864c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 8658f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (!(host->flags & SDHCI_REQ_USE_DMA)) { 866da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior int flags; 867da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior 868da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags = SG_MITER_ATOMIC; 869da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior if (host->data->flags & MMC_DATA_READ) 870da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 871da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior else 872da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 873da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); 8747659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks = data->blocks; 875d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 876c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8776aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_set_transfer_irqs(host); 8786aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 879f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* Set the DMA boundary value and block size */ 880f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, 881f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni data->blksz), SDHCI_BLOCK_SIZE); 8824e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); 883c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 884c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 885c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 886e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_command *cmd) 887c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 888c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 889e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_data *data = cmd->data; 890c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8912b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng if (data == NULL) { 8922b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng /* clear Auto CMD settings for no data CMDs */ 8932b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng mode = sdhci_readw(host, SDHCI_TRANSFER_MODE); 8942b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng sdhci_writew(host, mode & ~(SDHCI_TRNS_AUTO_CMD12 | 8952b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng SDHCI_TRNS_AUTO_CMD23), SDHCI_TRANSFER_MODE); 896c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 8972b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng } 898c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 899e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman WARN_ON(!host->data); 900e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 901c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 902e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (mmc_op_multi(cmd->opcode) || data->blocks > 1) { 903e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_MULTI; 904e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 905e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * If we are sending CMD23, CMD12 never gets sent 906e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * on successful completion (so no Auto-CMD12). 907e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 908e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) 909e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD12; 9108edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) { 9118edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD23; 9128edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin sdhci_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2); 9138edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 914c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 9158edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 916c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 917c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 918c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) 919c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 920c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 9214e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, mode, SDHCI_TRANSFER_MODE); 922d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 923d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 924d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 925d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 926d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 927d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 928d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 929d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 930d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 931d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 933c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 9342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 9352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_adma_table_post(host, data); 9362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else { 9372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 9382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, (data->flags & MMC_DATA_READ) ? 9392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DMA_FROM_DEVICE : DMA_TO_DEVICE); 9402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 943d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 944c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * The specification states that the block count register must 945c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * be updated, but it does not specify at what point in the 946c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * data flow. That makes the register entirely useless to read 947c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * back so we have to assume that nothing made it to the card 948c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * in the event of an error. 949d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 950c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman if (data->error) 951c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = 0; 952d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 953c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = data->blksz * data->blocks; 954d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 955e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 956e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Need to send CMD12 if - 957e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * a) open-ended multiblock transfer (no CMD23) 958e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * b) error in multiblock transfer 959e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 960e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (data->stop && 961e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin (data->error || 962e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin !host->mrq->sbc)) { 963e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 965d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 966d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 967d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 96817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (data->error) { 96903231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_CMD); 97003231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_DATA); 971d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 972d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 973d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 974d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 975d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 978c0e55129b09f3b9fee271e5fe23332393ab4c2a9Dong Aishengvoid sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 980d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 981fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 9827cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 983d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 984d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 986d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 9877cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 988fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 989fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 990fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 991fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 992fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 993fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 994fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 995fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 996fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 997fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 9984e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 9997cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1000a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Controller never released " 1001acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 1002d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 100317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EIO; 1004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1005d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1006d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 10077cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 10087cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 10097cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1010d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10113e1a6892481034193b2502725f787465ebf39818Adrian Hunter timeout = jiffies; 10121d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson if (!cmd->data && cmd->busy_timeout > 9000) 10131d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ; 10143e1a6892481034193b2502725f787465ebf39818Adrian Hunter else 10153e1a6892481034193b2502725f787465ebf39818Adrian Hunter timeout += 10 * HZ; 10163e1a6892481034193b2502725f787465ebf39818Adrian Hunter mod_timer(&host->timer, timeout); 1017d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1018d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 1019e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min host->busy_handle = 0; 1020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1021a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_prepare_data(host, cmd); 1022d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10234e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); 1024d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1025e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_set_transfer_mode(host, cmd); 1026c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 1027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 1028a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Unsupported response type!\n", 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 103017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EINVAL; 1031d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1032d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1034d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1035d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 1036d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 1037d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 1038d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 1039d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 1040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 1041d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 1043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 1045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 1046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 1047d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 1048b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1049b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 is special in that the Data Present Select should be set */ 1050069c9f142822d552ec885572945d8bce9eff0519Girish K S if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || 1051069c9f142822d552ec885572945d8bce9eff0519Girish K S cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) 1052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 1053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10544e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); 1055d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1056c0e55129b09f3b9fee271e5fe23332393ab4c2a9Dong AishengEXPORT_SYMBOL_GPL(sdhci_send_command); 1057d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1058d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 1059d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1060d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 1061d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1062d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 1063d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1064d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 1065d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 1066d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 1067d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 10684e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[i] = sdhci_readl(host, 1069d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 1070d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 1071d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 10724e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, 1073d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 1074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1075d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 10764e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE); 1077d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1078d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1079d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 108017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = 0; 1081d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1082e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Finished CMD23, now send actual command. */ 1083e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->cmd == host->mrq->sbc) { 1084e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1085e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, host->mrq->cmd); 1086e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } else { 1087e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 1088e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Processed actual command. */ 1089e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->data && host->data_early) 1090e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_finish_data(host); 1091d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1092e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->cmd->data) 1093e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin tasklet_schedule(&host->finish_tasklet); 1094e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1095e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1096e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } 1097d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1098d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 109952983382c74f59a3953e622d7661a24e1bc4388aKevin Liustatic u16 sdhci_get_preset_value(struct sdhci_host *host) 110052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu{ 1101d975f121011a58223c7936ab483c3374a83236c3Russell King u16 preset = 0; 110252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 1103d975f121011a58223c7936ab483c3374a83236c3Russell King switch (host->timing) { 1104d975f121011a58223c7936ab483c3374a83236c3Russell King case MMC_TIMING_UHS_SDR12: 110552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); 110652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 1107d975f121011a58223c7936ab483c3374a83236c3Russell King case MMC_TIMING_UHS_SDR25: 110852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR25); 110952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 1110d975f121011a58223c7936ab483c3374a83236c3Russell King case MMC_TIMING_UHS_SDR50: 111152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR50); 111252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 1113d975f121011a58223c7936ab483c3374a83236c3Russell King case MMC_TIMING_UHS_SDR104: 1114d975f121011a58223c7936ab483c3374a83236c3Russell King case MMC_TIMING_MMC_HS200: 111552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104); 111652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 1117d975f121011a58223c7936ab483c3374a83236c3Russell King case MMC_TIMING_UHS_DDR50: 111852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50); 111952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 112052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu default: 112152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu pr_warn("%s: Invalid UHS-I mode selected\n", 112252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu mmc_hostname(host->mmc)); 112352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); 112452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 112552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 112652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu return preset; 112752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu} 112852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 11291771059cf5f9c09e37ef6315df8acf120f2642fcRussell Kingvoid sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 1130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1131c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath int div = 0; /* Initialized for compiler warning */ 1132df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO int real_div = div, clk_mul = 1; 1133c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath u16 clk = 0; 11347cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 1135d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 11361650d0c71a209c7d6bdddda8a7e187c537ceb71aRussell King host->mmc->actual_clock = 0; 11371650d0c71a209c7d6bdddda8a7e187c537ceb71aRussell King 11384e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); 1139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 1141373073efd06528867df963724a93f29c7d5534d0Russell King return; 1142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 114385105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version >= SDHCI_SPEC_300) { 1144da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (host->preset_enabled) { 114552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu u16 pre_val; 114652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 114752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 114852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu pre_val = sdhci_get_preset_value(host); 114952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu div = (pre_val & SDHCI_PRESET_SDCLK_FREQ_MASK) 115052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu >> SDHCI_PRESET_SDCLK_FREQ_SHIFT; 115152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (host->clk_mul && 115252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (pre_val & SDHCI_PRESET_CLKGEN_SEL_MASK)) { 115352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk = SDHCI_PROG_CLOCK_MODE; 115452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu real_div = div + 1; 115552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk_mul = host->clk_mul; 115652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } else { 115752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu real_div = max_t(int, 1, div << 1); 115852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 115952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu goto clock_set; 116052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 116152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 1162c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1163c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Check if the Host Controller supports Programmable Clock 1164c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Mode. 1165c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1166c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 116752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu for (div = 1; div <= 1024; div++) { 116852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if ((host->max_clk * host->clk_mul / div) 116952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu <= clock) 117052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 117152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 1172c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 117352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu * Set Programmable Clock Mode in the Clock 117452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu * Control register. 1175c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 117652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk = SDHCI_PROG_CLOCK_MODE; 117752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu real_div = div; 117852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk_mul = host->clk_mul; 117952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu div--; 1180c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else { 1181c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* Version 3.00 divisors must be a multiple of 2. */ 1182c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->max_clk <= clock) 1183c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div = 1; 1184c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else { 1185c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; 1186c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div += 2) { 1187c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if ((host->max_clk / div) <= clock) 1188c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath break; 1189c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 119085105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1191df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1192c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 119385105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 119485105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } else { 119585105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao /* Version 2.00 divisors must be a power of 2. */ 11960397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) { 119785105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if ((host->max_clk / div) <= clock) 119885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao break; 119985105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1200df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1201c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 1202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 120452983382c74f59a3953e622d7661a24e1bc4388aKevin Liuclock_set: 120503d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong if (real_div) 1206df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; 1207c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; 120885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) 120985105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao << SDHCI_DIVIDER_HI_SHIFT; 1210d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 12114e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1212d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 121327f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball /* Wait max 20 ms */ 121427f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball timeout = 20; 12154e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) 12167cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 12177cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1218a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Internal clock never " 1219acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 1220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 12237cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 12247cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 12257cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 12284e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 12301771059cf5f9c09e37ef6315df8acf120f2642fcRussell KingEXPORT_SYMBOL_GPL(sdhci_set_clock); 1231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 123224fbb3ca1468861e5ac33a26c4130610ae8d0e20Russell Kingstatic void sdhci_set_power(struct sdhci_host *host, unsigned char mode, 123324fbb3ca1468861e5ac33a26c4130610ae8d0e20Russell King unsigned short vdd) 1234146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 12353a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger struct mmc_host *mmc = host->mmc; 12368364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro u8 pwr = 0; 1237146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 123852221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger if (!IS_ERR(mmc->supply.vmmc)) { 123952221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger spin_unlock_irq(&host->lock); 12404e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); 124152221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger spin_lock_irq(&host->lock); 124252221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger return; 124352221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger } 124452221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger 124524fbb3ca1468861e5ac33a26c4130610ae8d0e20Russell King if (mode != MMC_POWER_OFF) { 124624fbb3ca1468861e5ac33a26c4130610ae8d0e20Russell King switch (1 << vdd) { 1247ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_165_195: 1248ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_180; 1249ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1250ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_29_30: 1251ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_30_31: 1252ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_300; 1253ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1254ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_32_33: 1255ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_33_34: 1256ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_330; 1257ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1258ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman default: 1259ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman BUG(); 1260ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1261ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1262ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1263ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (host->pwr == pwr) 1264e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King return; 1265146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1266ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman host->pwr = pwr; 1267ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1268ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (pwr == 0) { 12694e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1270f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) 1271f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter sdhci_runtime_pm_bus_off(host); 127224fbb3ca1468861e5ac33a26c4130610ae8d0e20Russell King vdd = 0; 1273e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King } else { 1274e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King /* 1275e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * Spec says that we should clear the power reg before setting 1276e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * a new value. Some controllers don't seem to like this though. 1277e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King */ 1278e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 1279e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1280146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1281e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King /* 1282e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * At least the Marvell CaFe chip gets confused if we set the 1283e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * voltage and set turn on power at the same time, so set the 1284e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * voltage first. 1285e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King */ 1286e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) 1287e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1288e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon 1289e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King pwr |= SDHCI_POWER_ON; 1290146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1291e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1292557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte 1293e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) 1294e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King sdhci_runtime_pm_bus_on(host); 1295f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter 1296e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King /* 1297e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * Some controllers need an extra 10ms delay of 10ms before 1298e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King * they can apply clock after applying power 1299e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King */ 1300e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) 1301e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King mdelay(10); 1302e921a8b6c47012bef94fe778f6e00df4207d5ed9Russell King } 1303146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 1304146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1305d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1306d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1307d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 1308d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1309d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1310d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1311d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 1312d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1313d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1314505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo int present; 1315d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1316473b095a72a95ba719905b1f2e82cd18d099a427Aaron Lu u32 tuning_opcode; 1317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1319d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 132066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 132166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1322d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1323d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1324d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 1325d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1326f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 13282f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1329e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1330e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 1331e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Ensure we don't send the STOP for non-SET_BLOCK_COUNTED 1332e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * requests if Auto-CMD12 is enabled. 1333e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 1334e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) { 1335c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang if (mrq->stop) { 1336c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->data->stop = NULL; 1337c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->stop = NULL; 1338c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1339c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1340d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1341d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 1342d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1343505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo /* 1344505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * Firstly check card presence from cd-gpio. The return could 1345505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * be one of the following possibilities: 1346505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * negative: cd-gpio is not available 1347505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * zero: cd-gpio is used, and card is removed 1348505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * one: cd-gpio is used, and card is present 1349505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo */ 1350505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = mmc_gpio_get_cd(host->mmc); 1351505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo if (present < 0) { 1352505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo /* If polling, assume that the card is always present. */ 1353505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 1354505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = 1; 1355505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo else 1356505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 1357505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo SDHCI_CARD_PRESENT; 1358bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski } 1359bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski 136068d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (!present || host->flags & SDHCI_DEVICE_DEAD) { 136117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 1362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1363cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } else { 1364cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath u32 present_state; 1365cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1366cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 1367cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1368cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * Check if the re-tuning timer has already expired and there 13697756a96d1617753d8387e59e0ba410e0dd512be4Yi Sun * is no on-going data transfer and DAT0 is not busy. If so, 13707756a96d1617753d8387e59e0ba410e0dd512be4Yi Sun * we need to execute tuning procedure before sending command. 1371cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1372cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if ((host->flags & SDHCI_NEEDS_RETUNING) && 13737756a96d1617753d8387e59e0ba410e0dd512be4Yi Sun !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ)) && 13747756a96d1617753d8387e59e0ba410e0dd512be4Yi Sun (present_state & SDHCI_DATA_0_LVL_MASK)) { 137514efd957209461bbdf285bf0d67e931955d04a4cChris Ball if (mmc->card) { 137614efd957209461bbdf285bf0d67e931955d04a4cChris Ball /* eMMC uses cmd21 but sd and sdio use cmd19 */ 137714efd957209461bbdf285bf0d67e931955d04a4cChris Ball tuning_opcode = 137814efd957209461bbdf285bf0d67e931955d04a4cChris Ball mmc->card->type == MMC_TYPE_MMC ? 137914efd957209461bbdf285bf0d67e931955d04a4cChris Ball MMC_SEND_TUNING_BLOCK_HS200 : 138014efd957209461bbdf285bf0d67e931955d04a4cChris Ball MMC_SEND_TUNING_BLOCK; 138163c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu 138263c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu /* Here we need to set the host->mrq to NULL, 138363c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu * in case the pending finish_tasklet 138463c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu * finishes it incorrectly. 138563c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu */ 138663c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu host->mrq = NULL; 138763c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu 138814efd957209461bbdf285bf0d67e931955d04a4cChris Ball spin_unlock_irqrestore(&host->lock, flags); 138914efd957209461bbdf285bf0d67e931955d04a4cChris Ball sdhci_execute_tuning(mmc, tuning_opcode); 139014efd957209461bbdf285bf0d67e931955d04a4cChris Ball spin_lock_irqsave(&host->lock, flags); 139114efd957209461bbdf285bf0d67e931955d04a4cChris Ball 139214efd957209461bbdf285bf0d67e931955d04a4cChris Ball /* Restore original mmc_request structure */ 139314efd957209461bbdf285bf0d67e931955d04a4cChris Ball host->mrq = mrq; 139414efd957209461bbdf285bf0d67e931955d04a4cChris Ball } 1395cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1396cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 13978edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) 1398e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->sbc); 1399e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin else 1400e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->cmd); 1401cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1402d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14035f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1405d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1406d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14072317f56c055fcad524bf6a873df48a754e7ebc4dRussell Kingvoid sdhci_set_bus_width(struct sdhci_host *host, int width) 14082317f56c055fcad524bf6a873df48a754e7ebc4dRussell King{ 14092317f56c055fcad524bf6a873df48a754e7ebc4dRussell King u8 ctrl; 14102317f56c055fcad524bf6a873df48a754e7ebc4dRussell King 14112317f56c055fcad524bf6a873df48a754e7ebc4dRussell King ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 14122317f56c055fcad524bf6a873df48a754e7ebc4dRussell King if (width == MMC_BUS_WIDTH_8) { 14132317f56c055fcad524bf6a873df48a754e7ebc4dRussell King ctrl &= ~SDHCI_CTRL_4BITBUS; 14142317f56c055fcad524bf6a873df48a754e7ebc4dRussell King if (host->version >= SDHCI_SPEC_300) 14152317f56c055fcad524bf6a873df48a754e7ebc4dRussell King ctrl |= SDHCI_CTRL_8BITBUS; 14162317f56c055fcad524bf6a873df48a754e7ebc4dRussell King } else { 14172317f56c055fcad524bf6a873df48a754e7ebc4dRussell King if (host->version >= SDHCI_SPEC_300) 14182317f56c055fcad524bf6a873df48a754e7ebc4dRussell King ctrl &= ~SDHCI_CTRL_8BITBUS; 14192317f56c055fcad524bf6a873df48a754e7ebc4dRussell King if (width == MMC_BUS_WIDTH_4) 14202317f56c055fcad524bf6a873df48a754e7ebc4dRussell King ctrl |= SDHCI_CTRL_4BITBUS; 14212317f56c055fcad524bf6a873df48a754e7ebc4dRussell King else 14222317f56c055fcad524bf6a873df48a754e7ebc4dRussell King ctrl &= ~SDHCI_CTRL_4BITBUS; 14232317f56c055fcad524bf6a873df48a754e7ebc4dRussell King } 14242317f56c055fcad524bf6a873df48a754e7ebc4dRussell King sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 14252317f56c055fcad524bf6a873df48a754e7ebc4dRussell King} 14262317f56c055fcad524bf6a873df48a754e7ebc4dRussell KingEXPORT_SYMBOL_GPL(sdhci_set_bus_width); 14272317f56c055fcad524bf6a873df48a754e7ebc4dRussell King 142896d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell Kingvoid sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing) 142996d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King{ 143096d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King u16 ctrl_2; 143196d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King 143296d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 143396d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King /* Select Bus Speed Mode for host */ 143496d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; 143596d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King if ((timing == MMC_TIMING_MMC_HS200) || 143696d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King (timing == MMC_TIMING_UHS_SDR104)) 143796d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 |= SDHCI_CTRL_UHS_SDR104; 143896d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King else if (timing == MMC_TIMING_UHS_SDR12) 143996d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 |= SDHCI_CTRL_UHS_SDR12; 144096d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King else if (timing == MMC_TIMING_UHS_SDR25) 144196d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 |= SDHCI_CTRL_UHS_SDR25; 144296d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King else if (timing == MMC_TIMING_UHS_SDR50) 144396d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 |= SDHCI_CTRL_UHS_SDR50; 144496d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King else if ((timing == MMC_TIMING_UHS_DDR50) || 144596d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King (timing == MMC_TIMING_MMC_DDR52)) 144696d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King ctrl_2 |= SDHCI_CTRL_UHS_DDR50; 144796d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 144896d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King} 144996d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell KingEXPORT_SYMBOL_GPL(sdhci_set_uhs_signaling); 145096d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King 145166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) 1452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1453d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1454d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 14553a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger struct mmc_host *mmc = host->mmc; 1456d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1457d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1458d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1459ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->flags & SDHCI_DEVICE_DEAD) { 1460ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 14613a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vmmc) && 14623a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger ios->power_mode == MMC_POWER_OFF) 14634e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); 1464ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return; 1465ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter } 14661e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1467d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1468d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 1469d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 1470d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1471d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 14724e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 14737260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_reinit(host); 1474d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1475d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 147652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (host->version >= SDHCI_SPEC_300 && 1477372c463487c6af8275d216f4b259dda6343a33a5Dong Aisheng (ios->power_mode == MMC_POWER_UP) && 1478372c463487c6af8275d216f4b259dda6343a33a5Dong Aisheng !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) 147952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu sdhci_enable_preset_value(host, false); 148052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 1481373073efd06528867df963724a93f29c7d5534d0Russell King if (!ios->clock || ios->clock != host->clock) { 14821771059cf5f9c09e37ef6315df8acf120f2642fcRussell King host->ops->set_clock(host, ios->clock); 1483373073efd06528867df963724a93f29c7d5534d0Russell King host->clock = ios->clock; 148403d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong 148503d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK && 148603d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->clock) { 148703d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->timeout_clk = host->mmc->actual_clock ? 148803d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->mmc->actual_clock / 1000 : 148903d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->clock / 1000; 149003d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->mmc->max_busy_timeout = 149103d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->ops->get_max_timeout_count ? 149203d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->ops->get_max_timeout_count(host) : 149303d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong 1 << 27; 149403d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong host->mmc->max_busy_timeout /= host->timeout_clk; 149503d6f5ffc5c469e66bfe0a7d8120d29d4c3c07c9Aisheng Dong } 1496373073efd06528867df963724a93f29c7d5534d0Russell King } 1497d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 149824fbb3ca1468861e5ac33a26c4130610ae8d0e20Russell King sdhci_set_power(host, ios->power_mode, ios->vdd); 1499d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1500643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity if (host->ops->platform_send_init_74_clocks) 1501643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity host->ops->platform_send_init_74_clocks(host, ios->power_mode); 1502643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity 15032317f56c055fcad524bf6a873df48a754e7ebc4dRussell King host->ops->set_bus_width(host, ios->bus_width); 1504ae6d6c92212e94b12ab9365c23fb73acc2c3c2e7Kyungmin Park 150515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 1506cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 15073ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity if ((ios->timing == MMC_TIMING_SD_HS || 15083ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity ios->timing == MMC_TIMING_MMC_HS) 15093ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity && !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) 1510cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 1511cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 1512cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 1513cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1514d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (host->version >= SDHCI_SPEC_300) { 151549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath u16 clk, ctrl_2; 151649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 151749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* In case of UHS-I modes, set High Speed Enable */ 1518069c9f142822d552ec885572945d8bce9eff0519Girish K S if ((ios->timing == MMC_TIMING_MMC_HS200) || 1519bb8175a8aa42d731a840cd474e348ac3367eb5a0Seungwon Jeon (ios->timing == MMC_TIMING_MMC_DDR52) || 1520069c9f142822d552ec885572945d8bce9eff0519Girish K S (ios->timing == MMC_TIMING_UHS_SDR50) || 152149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_SDR104) || 152249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_DDR50) || 1523dd8df17fe83483d7ea06ff229895e35a42071599Alexander Elbs (ios->timing == MMC_TIMING_UHS_SDR25)) 152449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath ctrl |= SDHCI_CTRL_HISPD; 1525d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1526da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (!host->preset_enabled) { 1527758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1528d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1529d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * We only need to set Driver Strength if the 1530d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * preset value enable is not set. 1531d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1532da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1533d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK; 1534d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (ios->drv_type == MMC_SET_DRIVER_TYPE_A) 1535d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A; 1536d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C) 1537d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C; 1538d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1539d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 1540758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else { 1541758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* 1542758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * According to SDHC Spec v3.00, if the Preset Value 1543758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Enable in the Host Control 2 register is set, we 1544758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * need to reset SD Clock Enable before changing High 1545758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Speed Enable to avoid generating clock gliches. 1546758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath */ 1547758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1548758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Reset SD Clock Enable */ 1549758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1550758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 1551758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1552758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1553758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1554758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1555758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Re-enable SD Clock */ 15561771059cf5f9c09e37ef6315df8acf120f2642fcRussell King host->ops->set_clock(host, host->clock); 1557d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 155849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 155949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Reset SD Clock Enable */ 156049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 156149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 156249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 156349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 156496d7b78cfc2fd6b1539704e2d33239dbaa097cc4Russell King host->ops->set_uhs_signaling(host, ios->timing); 1565d975f121011a58223c7936ab483c3374a83236c3Russell King host->timing = ios->timing; 156649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 156752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) && 156852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu ((ios->timing == MMC_TIMING_UHS_SDR12) || 156952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_SDR25) || 157052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_SDR50) || 157152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_SDR104) || 157252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_DDR50))) { 157352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu u16 preset; 157452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 157552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu sdhci_enable_preset_value(host, true); 157652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_get_preset_value(host); 157752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu ios->drv_type = (preset & SDHCI_PRESET_DRV_MASK) 157852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu >> SDHCI_PRESET_DRV_SHIFT; 157952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 158052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 158149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Re-enable SD Clock */ 15821771059cf5f9c09e37ef6315df8acf120f2642fcRussell King host->ops->set_clock(host, host->clock); 1583758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else 1584758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1585d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1586b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo /* 1587b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * Some (ENE) controllers go apeshit on some ios operation, 1588b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * signalling timeout and CRC errors even on CMD0. Resetting 1589b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * it on each ios seems to solve the problem. 1590b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo */ 1591b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) 159203231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 1593b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 15945f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1595d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1596d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1597d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 159866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 159966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 160066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 160166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 160266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 160366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, ios); 160466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 160566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 160666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 160794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liustatic int sdhci_do_get_cd(struct sdhci_host *host) 160894144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu{ 160994144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu int gpio_cd = mmc_gpio_get_cd(host->mmc); 161094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 161194144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu if (host->flags & SDHCI_DEVICE_DEAD) 161294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return 0; 161394144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 161494144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu /* If polling/nonremovable, assume that the card is always present. */ 161594144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || 161694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu (host->mmc->caps & MMC_CAP_NONREMOVABLE)) 161794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return 1; 161894144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 161994144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu /* Try slot gpio detect */ 162094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu if (!IS_ERR_VALUE(gpio_cd)) 162194144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return !!gpio_cd; 162294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 162394144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu /* Host native card detect */ 162494144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); 162594144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu} 162694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 162794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liustatic int sdhci_get_cd(struct mmc_host *mmc) 162894144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu{ 162994144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu struct sdhci_host *host = mmc_priv(mmc); 163094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu int ret; 163194144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 163294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu sdhci_runtime_pm_get(host); 163394144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu ret = sdhci_do_get_cd(host); 163494144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu sdhci_runtime_pm_put(host); 163594144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return ret; 163694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu} 163794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 163866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_check_ro(struct sdhci_host *host) 1639d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1640d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 16412dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang int is_readonly; 1642d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1643d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1644d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16451e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 16462dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = 0; 16472dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang else if (host->ops->get_ro) 16482dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = host->ops->get_ro(host); 16491e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman else 16502dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE) 16512dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang & SDHCI_WRITE_PROTECT); 1652d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1653d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1654d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16552dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang /* This quirk needs to be replaced by a callback-function later */ 16562dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ? 16572dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang !is_readonly : is_readonly; 1658d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1659d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 166082b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai#define SAMPLE_COUNT 5 166182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 166266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_do_get_ro(struct sdhci_host *host) 166382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai{ 166482b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai int i, ro_count; 166582b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 166682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT)) 166766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return sdhci_check_ro(host); 166882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 166982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai ro_count = 0; 167082b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai for (i = 0; i < SAMPLE_COUNT; i++) { 167166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (sdhci_check_ro(host)) { 167282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (++ro_count > SAMPLE_COUNT / 2) 167382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 1; 167482b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 167582b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai msleep(30); 167682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 167782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 0; 167882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai} 167982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 168020758b66dce76af0527363186f44b464d83e5666Adrian Hunterstatic void sdhci_hw_reset(struct mmc_host *mmc) 168120758b66dce76af0527363186f44b464d83e5666Adrian Hunter{ 168220758b66dce76af0527363186f44b464d83e5666Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 168320758b66dce76af0527363186f44b464d83e5666Adrian Hunter 168420758b66dce76af0527363186f44b464d83e5666Adrian Hunter if (host->ops && host->ops->hw_reset) 168520758b66dce76af0527363186f44b464d83e5666Adrian Hunter host->ops->hw_reset(host); 168620758b66dce76af0527363186f44b464d83e5666Adrian Hunter} 168720758b66dce76af0527363186f44b464d83e5666Adrian Hunter 168866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_get_ro(struct mmc_host *mmc) 1689f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman{ 169066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 169166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret; 1692f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 169366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 169466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter ret = sdhci_do_get_ro(host); 169566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 169666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 169766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 1698f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 169966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable) 170066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 1701be138554a7923658ded799b0e8794d9c1d08a6e5Russell King if (!(host->flags & SDHCI_DEVICE_DEAD)) { 1702ef104333a234f66cd13fd16632086a21b90fced6Russell King if (enable) 1703b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier |= SDHCI_INT_CARD_INT; 1704ef104333a234f66cd13fd16632086a21b90fced6Russell King else 1705b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier &= ~SDHCI_INT_CARD_INT; 1706b537f94ce19583de1882f539a5cc49aa99260acaRussell King 1707b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 1708b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 1709ef104333a234f66cd13fd16632086a21b90fced6Russell King mmiowb(); 1710ef104333a234f66cd13fd16632086a21b90fced6Russell King } 171166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 171266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 171366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) 171466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 171566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 171666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 1717f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 1718ef104333a234f66cd13fd16632086a21b90fced6Russell King sdhci_runtime_pm_get(host); 1719ef104333a234f66cd13fd16632086a21b90fced6Russell King 172066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 1721ef104333a234f66cd13fd16632086a21b90fced6Russell King if (enable) 1722ef104333a234f66cd13fd16632086a21b90fced6Russell King host->flags |= SDHCI_SDIO_IRQ_ENABLED; 1723ef104333a234f66cd13fd16632086a21b90fced6Russell King else 1724ef104333a234f66cd13fd16632086a21b90fced6Russell King host->flags &= ~SDHCI_SDIO_IRQ_ENABLED; 1725ef104333a234f66cd13fd16632086a21b90fced6Russell King 172666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, enable); 1727f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1728ef104333a234f66cd13fd16632086a21b90fced6Russell King 1729ef104333a234f66cd13fd16632086a21b90fced6Russell King sdhci_runtime_pm_put(host); 1730f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman} 1731f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 173220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liustatic int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, 173321f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam struct mmc_ios *ios) 1734f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath{ 17353a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger struct mmc_host *mmc = host->mmc; 173620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu u16 ctrl; 17376231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity int ret; 1738f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 173920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* 174020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu * Signal Voltage Switching is only applicable for Host Controllers 174120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu * v3.00 and above. 174220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu */ 174320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (host->version < SDHCI_SPEC_300) 174420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return 0; 17456231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 1746f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1747f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 174821f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam switch (ios->signal_voltage) { 174920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu case MMC_SIGNAL_VOLTAGE_330: 175020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ 175120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl &= ~SDHCI_CTRL_VDD_180; 175220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1753f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 17543a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vqmmc)) { 17553a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger ret = regulator_set_voltage(mmc->supply.vqmmc, 2700000, 17563a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger 3600000); 175720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ret) { 17586606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Switching to 3.3V signalling voltage failed\n", 17596606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 176020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EIO; 176120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 176220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 176320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Wait for 5ms */ 176420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu usleep_range(5000, 5500); 1765f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 176620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* 3.3V regulator output should be stable within 5 ms */ 176720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 176820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (!(ctrl & SDHCI_CTRL_VDD_180)) 176920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return 0; 17706231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17716606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: 3.3V regulator output did not became stable\n", 17726606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 177320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 177420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EAGAIN; 177520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu case MMC_SIGNAL_VOLTAGE_180: 17763a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vqmmc)) { 17773a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger ret = regulator_set_voltage(mmc->supply.vqmmc, 177820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 1700000, 1950000); 177920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ret) { 17806606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Switching to 1.8V signalling voltage failed\n", 17816606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 178220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EIO; 178320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 178420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 17856231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17866231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 17876231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * Enable 1.8V Signal Enable in the Host Control2 17886231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * register 17896231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity */ 179020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl |= SDHCI_CTRL_VDD_180; 179120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 17926231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 179320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* 1.8V regulator output should be stable within 5 ms */ 179420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 179520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ctrl & SDHCI_CTRL_VDD_180) 179620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return 0; 1797f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 17986606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: 1.8V regulator output did not became stable\n", 17996606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 1800f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 180120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EAGAIN; 180220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu case MMC_SIGNAL_VOLTAGE_120: 18033a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vqmmc)) { 18043a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger ret = regulator_set_voltage(mmc->supply.vqmmc, 1100000, 18053a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger 1300000); 180620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ret) { 18076606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Switching to 1.2V signalling voltage failed\n", 18086606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 180920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EIO; 1810f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 1811f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 18126231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return 0; 181320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu default: 1814f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* No signal voltage switch required */ 1815f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 181620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 1817f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath} 1818f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 181966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, 182021f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam struct mmc_ios *ios) 182166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 182266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 182366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int err; 182466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 182566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->version < SDHCI_SPEC_300) 182666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 182766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 182821f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam err = sdhci_do_start_signal_voltage_switch(host, ios); 182966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 183066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return err; 183166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 183266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 183320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liustatic int sdhci_card_busy(struct mmc_host *mmc) 183420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu{ 183520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu struct sdhci_host *host = mmc_priv(mmc); 183620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu u32 present_state; 183720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 183820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_runtime_pm_get(host); 183920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Check whether DAT[3:0] is 0000 */ 184020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 184120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_runtime_pm_put(host); 184220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 184320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return !(present_state & SDHCI_DATA_LVL_MASK); 184420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu} 184520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 1846069c9f142822d552ec885572945d8bce9eff0519Girish K Sstatic int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) 1847b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath{ 18484b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King struct sdhci_host *host = mmc_priv(mmc); 1849b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u16 ctrl; 1850b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int tuning_loop_counter = MAX_TUNING_LOOP; 1851b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int err = 0; 18522b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong unsigned long flags; 1853b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 185466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 18552b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_lock_irqsave(&host->lock, flags); 1856b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1857b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1858069c9f142822d552ec885572945d8bce9eff0519Girish K S * The Host Controller needs tuning only in case of SDR104 mode 1859069c9f142822d552ec885572945d8bce9eff0519Girish K S * and for SDR50 mode when Use Tuning for SDR50 is set in the 1860b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Capabilities register. 1861069c9f142822d552ec885572945d8bce9eff0519Girish K S * If the Host Controller supports the HS200 mode then the 1862069c9f142822d552ec885572945d8bce9eff0519Girish K S * tuning function has to be executed. 1863b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 18644b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King switch (host->timing) { 18654b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King case MMC_TIMING_MMC_HS200: 18664b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King case MMC_TIMING_UHS_SDR104: 18674b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King break; 18684b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King 18694b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King case MMC_TIMING_UHS_SDR50: 18704b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King if (host->flags & SDHCI_SDR50_NEEDS_TUNING || 18714b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King host->flags & SDHCI_SDR104_NEEDS_TUNING) 18724b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King break; 18734b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King /* FALLTHROUGH */ 18744b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King 18754b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King default: 18762b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 187766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1878b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return 0; 1879b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1880b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 18814525181245c0f4005788c17315aee4371662ddeaDong Aisheng if (host->ops->platform_execute_tuning) { 18822b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 18834525181245c0f4005788c17315aee4371662ddeaDong Aisheng err = host->ops->platform_execute_tuning(host, opcode); 18844525181245c0f4005788c17315aee4371662ddeaDong Aisheng sdhci_runtime_pm_put(host); 18854525181245c0f4005788c17315aee4371662ddeaDong Aisheng return err; 18864525181245c0f4005788c17315aee4371662ddeaDong Aisheng } 18874525181245c0f4005788c17315aee4371662ddeaDong Aisheng 18884b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 18894b6f37d3a379b09840c482bc4dcb9c3b4f7246c1Russell King ctrl |= SDHCI_CTRL_EXEC_TUNING; 1890b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1891b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1892b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1893b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * As per the Host Controller spec v3.00, tuning command 1894b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * generates Buffer Read Ready interrupt, so enable that. 1895b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * 1896b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Note: The spec clearly says that when tuning sequence 1897b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * is being performed, the controller does not generate 1898b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * interrupts other than Buffer Read Ready interrupt. But 1899b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to make sure we don't hit a controller bug, we _only_ 1900b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * enable Buffer Read Ready interrupt here. 1901b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1902b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_INT_ENABLE); 1903b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_SIGNAL_ENABLE); 1904b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1905b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1906b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number 1907b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * of loops reaches 40 times or a timeout of 150ms occurs. 1908b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1909b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath do { 1910b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct mmc_command cmd = {0}; 191166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_request mrq = {NULL}; 1912b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1913069c9f142822d552ec885572945d8bce9eff0519Girish K S cmd.opcode = opcode; 1914b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.arg = 0; 1915b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1916b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.retries = 0; 1917b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.data = NULL; 1918b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.error = 0; 1919b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 19207ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper if (tuning_loop_counter-- == 0) 19217ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper break; 19227ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper 1923b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath mrq.cmd = &cmd; 1924b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = &mrq; 1925b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1926b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1927b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * In response to CMD19, the card sends 64 bytes of tuning 1928b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * block to the Host Controller. So we set the block size 1929b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to 64 here. 1930b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1931069c9f142822d552ec885572945d8bce9eff0519Girish K S if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200) { 1932069c9f142822d552ec885572945d8bce9eff0519Girish K S if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) 1933069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128), 1934069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1935069c9f142822d552ec885572945d8bce9eff0519Girish K S else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) 1936069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), 1937069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1938069c9f142822d552ec885572945d8bce9eff0519Girish K S } else { 1939069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), 1940069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1941069c9f142822d552ec885572945d8bce9eff0519Girish K S } 1942b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1943b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1944b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The tuning block is sent by the card to the host controller. 1945b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * So we set the TRNS_READ bit in the Transfer Mode register. 1946b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * This also takes care of setting DMA Enable and Multi Block 1947b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Select in the same register to 0. 1948b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1949b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); 1950b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1951b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_send_command(host, &cmd); 1952b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1953b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->cmd = NULL; 1954b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = NULL; 1955b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 19562b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 1957b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* Wait for Buffer Read Ready interrupt */ 1958b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wait_event_interruptible_timeout(host->buf_ready_int, 1959b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath (host->tuning_done == 1), 1960b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath msecs_to_jiffies(50)); 19612b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_lock_irqsave(&host->lock, flags); 1962b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1963b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!host->tuning_done) { 1964a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Timeout waiting for " 1965b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "Buffer Read Ready interrupt during tuning " 1966b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "procedure, falling back to fixed sampling " 1967b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "clock\n"); 1968b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1969b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1970b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_EXEC_TUNING; 1971b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1972b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1973b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 1974b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 1975b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1976b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1977b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 0; 1978b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1979b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1980197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders 1981197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders /* eMMC spec does not require a delay between tuning cycles */ 1982197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders if (opcode == MMC_SEND_TUNING_BLOCK) 1983197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders mdelay(1); 1984b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } while (ctrl & SDHCI_CTRL_EXEC_TUNING); 1985b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1986b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1987b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The Host Driver has exhausted the maximum number of loops allowed, 1988b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * so use fixed sampling frequency. 1989b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 19907ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper if (tuning_loop_counter < 0) { 1991b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1992b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 19937ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper } 19947ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) { 19957ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper pr_info(DRIVER_NAME ": Tuning procedure" 19967ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper " failed, falling back to fixed sampling" 19977ce45e950624bee09381c3fd727f06262bcb73e2Al Cooper " clock\n"); 1998114f2bf6a158cd84c1a7280cf6233904c8bce430Dong Aisheng err = -EIO; 1999b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2000b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2001b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nathout: 2002cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 2003cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * If this is the very first time we are here, we start the retuning 2004cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * timer. Since only during the first time, SDHCI_NEEDS_RETUNING 2005cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * flag won't be set, we check this condition before actually starting 2006cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * the timer. 2007cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 2008cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count && 2009cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath (host->tuning_mode == SDHCI_TUNING_MODE_1)) { 2010973905feab85416784f36cc94b868392fd465ef4Aaron Lu host->flags |= SDHCI_USING_RETUNING_TIMER; 2011cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 2012cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 2013cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Tuning mode 1 limits the maximum data length to 4MB */ 2014cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mmc->max_blk_count = (4 * 1024 * 1024) / mmc->max_blk_size; 20152bc024855e881c697fc9bf9799f377c392192a43Arend van Spriel } else if (host->flags & SDHCI_USING_RETUNING_TIMER) { 2016cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 2017cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Reload the new initial value for timer */ 20182bc024855e881c697fc9bf9799f377c392192a43Arend van Spriel mod_timer(&host->tuning_timer, jiffies + 20192bc024855e881c697fc9bf9799f377c392192a43Arend van Spriel host->tuning_count * HZ); 2020cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2021cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2022cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 2023cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case tuning fails, host controllers which support re-tuning can 2024cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * try tuning again at a later time, when the re-tuning timer expires. 2025cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * So for these controllers, we return 0. Since there might be other 2026cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * controllers who do not have this capability, we return error for 2027973905feab85416784f36cc94b868392fd465ef4Aaron Lu * them. SDHCI_USING_RETUNING_TIMER means the host is currently using 2028973905feab85416784f36cc94b868392fd465ef4Aaron Lu * a retuning timer to do the retuning for the card. 2029cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 2030973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (err && (host->flags & SDHCI_USING_RETUNING_TIMER)) 2031cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath err = 0; 2032cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2033b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 2034b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 20352b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 203666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 2037b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2038b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return err; 2039b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath} 2040b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 204152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 204252983382c74f59a3953e622d7661a24e1bc4388aKevin Liustatic void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) 20434d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath{ 20444d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* Host Controller v3.00 defines preset value registers */ 20454d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->version < SDHCI_SPEC_300) 20464d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath return; 20474d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 20484d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* 20494d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * We only enable or disable Preset Value if they are not already 20504d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * enabled or disabled respectively. Otherwise, we bail out. 20514d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath */ 2052da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (host->preset_enabled != enable) { 2053da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King u16 ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 2054da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King 2055da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (enable) 2056da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE; 2057da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King else 2058da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE; 2059da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King 20604d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 2061da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King 2062da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King if (enable) 2063da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King host->flags |= SDHCI_PV_ENABLED; 2064da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King else 2065da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King host->flags &= ~SDHCI_PV_ENABLED; 2066da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King 2067da91a8f9c0f56d75b35bfe2e2456187ab55b3639Russell King host->preset_enabled = enable; 20684d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } 206966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 207066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 207171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic void sdhci_card_event(struct mmc_host *mmc) 2072d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 207371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski struct sdhci_host *host = mmc_priv(mmc); 2074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2075d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2076722e1280c932dd42c474390482429ce12aff9031Christian Daudt /* First check if client has provided their own card event */ 2077722e1280c932dd42c474390482429ce12aff9031Christian Daudt if (host->ops->card_event) 2078722e1280c932dd42c474390482429ce12aff9031Christian Daudt host->ops->card_event(host); 2079722e1280c932dd42c474390482429ce12aff9031Christian Daudt 2080d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2081d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 208266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Check host->mrq first in case we are runtime suspended */ 20839668d765eab78d58e656177db2acb57c249b9c01Shawn Guo if (host->mrq && !sdhci_do_get_cd(host)) { 2084a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Card removed during transfer!\n", 208566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 2086a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Resetting controller.\n", 208766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 2088d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 208903231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_CMD); 209003231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_DATA); 2091d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 209266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->mrq->cmd->error = -ENOMEDIUM; 209366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter tasklet_schedule(&host->finish_tasklet); 2094d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2095d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2096d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 209771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski} 209871e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 209971e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic const struct mmc_host_ops sdhci_ops = { 210071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .request = sdhci_request, 210171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .set_ios = sdhci_set_ios, 210294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu .get_cd = sdhci_get_cd, 210371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .get_ro = sdhci_get_ro, 210471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .hw_reset = sdhci_hw_reset, 210571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .enable_sdio_irq = sdhci_enable_sdio_irq, 210671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, 210771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .execute_tuning = sdhci_execute_tuning, 210871e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .card_event = sdhci_card_event, 210920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu .card_busy = sdhci_card_busy, 211071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski}; 211171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 211271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski/*****************************************************************************\ 211371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * * 211471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * Tasklets * 211571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * * 211671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski\*****************************************************************************/ 211771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 2118d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 2119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2120d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2121d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2122d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 2123d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2124d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 2125d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 212666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 212766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 21280c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball /* 21290c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * If this tasklet gets rescheduled while running, it will 21300c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * be run again afterwards but without any active request. 21310c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball */ 213266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (!host->mrq) { 213366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 21340c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball return; 213566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 2136d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 2138d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 2140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 2143d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 2144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 21451e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!(host->flags & SDHCI_DEVICE_DEAD) && 2146b7b4d3426d2b5ecab21578eb20d8e456a1aace8fBen Dooks ((mrq->cmd && mrq->cmd->error) || 21471e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data && (mrq->data->error || 21481e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data->stop && mrq->data->stop->error))) || 21491e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { 2150645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2151645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 21528213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) 2153645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 21541771059cf5f9c09e37ef6315df8acf120f2642fcRussell King host->ops->set_clock(host, host->clock); 2155645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2156645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 2157645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 215803231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_CMD); 215903231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_DATA); 2160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 2163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 2164d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 2165d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2166f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 2167d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 21682f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 2169d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 21705f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2171d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 217466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 2175d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2177d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 2178d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2179d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2180d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2181d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2182d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 2183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2185d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 2187a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Timeout waiting for hardware " 2188acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 2189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 219217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 2193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 2195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 219617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 2197d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 219817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ETIMEDOUT; 2199d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2200d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2201d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22045f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2205d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2208cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data) 2209cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath{ 2210cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath struct sdhci_host *host; 2211cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath unsigned long flags; 2212cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2213cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host = (struct sdhci_host *)data; 2214cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2215cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_lock_irqsave(&host->lock, flags); 2216cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2217cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2218cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2219cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 2220cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath} 2221cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 2225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2227d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2228615413979487a1e25a3b76abbaa316280ca19d26Adrian Hunterstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask) 2229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2230d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 2233a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Got command interrupt 0x%08x even " 2234b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no command operation was in progress.\n", 2235b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2236d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2237d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2238d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 224043b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 224117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 224217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT | 224317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman SDHCI_INT_INDEX)) 224417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -EILSEQ; 224543b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman 2246e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->error) { 2247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2248e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2249e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2250e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2251e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman /* 2252e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The host can send and interrupt when the busy state has 2253e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * ended, allowing us to wait without wasting CPU cycles. 2254e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Unfortunately this is overloaded on the "data complete" 2255e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * interrupt, so we need to take some care when handling 2256e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * it. 2257e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * 2258e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Note: The 1.0 specification is a bit ambiguous about this 2259e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * feature so there might be some problems with older 2260e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * controllers. 2261e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman */ 2262e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->flags & MMC_RSP_BUSY) { 2263e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->data) 2264e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman DBG("Cannot wait for busy signal when also " 2265e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman "doing a data transfer"); 2266e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) 2267e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min && !host->busy_handle) { 2268e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min /* Mark that command complete before busy is ended */ 2269e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min host->busy_handle = 1; 2270e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2271e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min } 2272f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks 2273f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks /* The controller does not support the end-of-busy IRQ, 2274f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks * fall through and take the SDHCI_INT_RESPONSE */ 2275615413979487a1e25a3b76abbaa316280ca19d26Adrian Hunter } else if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) && 2276615413979487a1e25a3b76abbaa316280ca19d26Adrian Hunter host->cmd->opcode == MMC_STOP_TRANSMISSION && !host->data) { 2277615413979487a1e25a3b76abbaa316280ca19d26Adrian Hunter *mask &= ~SDHCI_INT_DATA_END; 2278e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2279e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2280e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_RESPONSE) 228143b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman sdhci_finish_command(host); 2282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2283d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22840957c3339efa333b7895157eb18b9b578394f80cGeorge G. Davis#ifdef CONFIG_MMC_DEBUG 22856882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) 22866882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks{ 22876882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks const char *name = mmc_hostname(host->mmc); 22886882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 *desc = host->adma_desc; 22896882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le32 *dma; 22906882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le16 *len; 22916882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 attr; 22926882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22936882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_dumpregs(host); 22946882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 22956882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks while (true) { 22966882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks dma = (__le32 *)(desc + 4); 22976882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks len = (__le16 *)(desc + 2); 22986882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks attr = *desc; 22996882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23006882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", 23016882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); 23026882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23036882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks desc += 8; 23046882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23056882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks if (attr & 2) 23066882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks break; 23076882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 23086882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks} 23096882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#else 23106882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) { } 23116882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#endif 23126882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 2313d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 2314d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2315069c9f142822d552ec885572945d8bce9eff0519Girish K S u32 command; 2316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2318b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 generates _only_ Buffer Read Ready interrupt */ 2319b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (intmask & SDHCI_INT_DATA_AVAIL) { 2320069c9f142822d552ec885572945d8bce9eff0519Girish K S command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)); 2321069c9f142822d552ec885572945d8bce9eff0519Girish K S if (command == MMC_SEND_TUNING_BLOCK || 2322069c9f142822d552ec885572945d8bce9eff0519Girish K S command == MMC_SEND_TUNING_BLOCK_HS200) { 2323b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 1; 2324b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wake_up(&host->buf_ready_int); 2325b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return; 2326b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2327b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2328b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 2330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2331e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The "data complete" interrupt is also used to 2332e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * indicate that a busy state has ended. See comment 2333e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * above in sdhci_cmd_irq(). 2334d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2335e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { 2336c5abd5e8998e20c2e82999670a03f26f1437d744Matthieu CASTET if (intmask & SDHCI_INT_DATA_TIMEOUT) { 2337c5abd5e8998e20c2e82999670a03f26f1437d744Matthieu CASTET host->cmd->error = -ETIMEDOUT; 2338c5abd5e8998e20c2e82999670a03f26f1437d744Matthieu CASTET tasklet_schedule(&host->finish_tasklet); 2339c5abd5e8998e20c2e82999670a03f26f1437d744Matthieu CASTET return; 2340c5abd5e8998e20c2e82999670a03f26f1437d744Matthieu CASTET } 2341e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2342e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min /* 2343e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min * Some cards handle busy-end interrupt 2344e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min * before the command completed, so make 2345e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min * sure we do things in the proper order. 2346e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min */ 2347e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min if (host->busy_handle) 2348e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min sdhci_finish_command(host); 2349e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min else 2350e99783a45220a2c5f5a598e0e81213ecf2dbcf2fChanho Min host->busy_handle = 1; 2351e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2352e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2353e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2354d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2355a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Got data interrupt 0x%08x even " 2356b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no data operation was in progress.\n", 2357b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2359d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2360d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 236417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 236522113efd00491310da802f3b1a9a66cfcf415facAries Lee else if (intmask & SDHCI_INT_DATA_END_BIT) 236622113efd00491310da802f3b1a9a66cfcf415facAries Lee host->data->error = -EILSEQ; 236722113efd00491310da802f3b1a9a66cfcf415facAries Lee else if ((intmask & SDHCI_INT_DATA_CRC) && 236822113efd00491310da802f3b1a9a66cfcf415facAries Lee SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) 236922113efd00491310da802f3b1a9a66cfcf415facAries Lee != MMC_BUS_TEST_R) 237017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -EILSEQ; 23716882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks else if (intmask & SDHCI_INT_ADMA_ERROR) { 2372a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: ADMA error\n", mmc_hostname(host->mmc)); 23736882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_show_adma_error(host); 23742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->data->error = -EIO; 2375a4071fbbb9edbc5a24985b2f64ed45f35b90dbebHaijun Zhang if (host->ops->adma_workaround) 2376a4071fbbb9edbc5a24985b2f64ed45f35b90dbebHaijun Zhang host->ops->adma_workaround(host, intmask); 23776882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 2378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 237917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (host->data->error) 2380d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 2382a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 2383d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 2384d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23856ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 23866ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 23876ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 23886ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 2389f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * 2390f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * According to the spec sdhci_readl(host, SDHCI_DMA_ADDRESS) 2391f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * should return a valid address to continue from, but as 2392f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * some controllers are faulty, don't trust them. 23936ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 2394f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni if (intmask & SDHCI_INT_DMA_END) { 2395f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni u32 dmastart, dmanow; 2396f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmastart = sg_dma_address(host->data->sg); 2397f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = dmastart + host->data->bytes_xfered; 2398f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* 2399f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * Force update to the next DMA block boundary. 2400f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni */ 2401f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = (dmanow & 2402f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) + 2403f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni SDHCI_DEFAULT_BOUNDARY_SIZE; 2404f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = dmanow - dmastart; 2405f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni DBG("%s: DMA base 0x%08x, transferred 0x%06x bytes," 2406f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni " next 0x%08x\n", 2407f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni mmc_hostname(host->mmc), dmastart, 2408f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered, dmanow); 2409f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); 2410f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni } 24116ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 2412e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2413e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->cmd) { 2414e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman /* 2415e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * Data managed to finish before the 2416e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * command completed. Make sure we do 2417e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * things in the proper order. 2418e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman */ 2419e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 1; 2420e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } else { 2421e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 2422e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2423e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2424d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2425d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2426d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24277d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 2428d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2429781e989cf593c71d26bdca74f5e77b3651fc060eRussell King irqreturn_t result = IRQ_NONE; 243066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = dev_id; 243141005003bcaf4ecfc80e02af01247f2670269816Russell King u32 intmask, mask, unexpected = 0; 2432781e989cf593c71d26bdca74f5e77b3651fc060eRussell King int max_loops = 16; 2433d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2434d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 2435d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2436be138554a7923658ded799b0e8794d9c1d08a6e5Russell King if (host->runtime_suspended && !sdhci_sdio_irq_enabled(host)) { 243766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock(&host->lock); 2438655bca7616bf6076d30b14d1478bca6807d49c45Adrian Hunter return IRQ_NONE; 243966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 244066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 24414e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov intmask = sdhci_readl(host, SDHCI_INT_STATUS); 244262df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 2443d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 2444d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 2445d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2446d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 244741005003bcaf4ecfc80e02af01247f2670269816Russell King do { 244841005003bcaf4ecfc80e02af01247f2670269816Russell King /* Clear selected interrupts. */ 244941005003bcaf4ecfc80e02af01247f2670269816Russell King mask = intmask & (SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK | 245041005003bcaf4ecfc80e02af01247f2670269816Russell King SDHCI_INT_BUS_POWER); 245141005003bcaf4ecfc80e02af01247f2670269816Russell King sdhci_writel(host, mask, SDHCI_INT_STATUS); 2452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 245341005003bcaf4ecfc80e02af01247f2670269816Russell King DBG("*** %s got interrupt: 0x%08x\n", 245441005003bcaf4ecfc80e02af01247f2670269816Russell King mmc_hostname(host->mmc), intmask); 2455d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 245641005003bcaf4ecfc80e02af01247f2670269816Russell King if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 245741005003bcaf4ecfc80e02af01247f2670269816Russell King u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 245841005003bcaf4ecfc80e02af01247f2670269816Russell King SDHCI_CARD_PRESENT; 2459d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 246041005003bcaf4ecfc80e02af01247f2670269816Russell King /* 246141005003bcaf4ecfc80e02af01247f2670269816Russell King * There is a observation on i.mx esdhc. INSERT 246241005003bcaf4ecfc80e02af01247f2670269816Russell King * bit will be immediately set again when it gets 246341005003bcaf4ecfc80e02af01247f2670269816Russell King * cleared, if a card is inserted. We have to mask 246441005003bcaf4ecfc80e02af01247f2670269816Russell King * the irq to prevent interrupt storm which will 246541005003bcaf4ecfc80e02af01247f2670269816Russell King * freeze the system. And the REMOVE gets the 246641005003bcaf4ecfc80e02af01247f2670269816Russell King * same situation. 246741005003bcaf4ecfc80e02af01247f2670269816Russell King * 246841005003bcaf4ecfc80e02af01247f2670269816Russell King * More testing are needed here to ensure it works 246941005003bcaf4ecfc80e02af01247f2670269816Russell King * for other platforms though. 247041005003bcaf4ecfc80e02af01247f2670269816Russell King */ 2471b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier &= ~(SDHCI_INT_CARD_INSERT | 2472b537f94ce19583de1882f539a5cc49aa99260acaRussell King SDHCI_INT_CARD_REMOVE); 2473b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier |= present ? SDHCI_INT_CARD_REMOVE : 2474b537f94ce19583de1882f539a5cc49aa99260acaRussell King SDHCI_INT_CARD_INSERT; 2475b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 2476b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 247741005003bcaf4ecfc80e02af01247f2670269816Russell King 247841005003bcaf4ecfc80e02af01247f2670269816Russell King sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT | 247941005003bcaf4ecfc80e02af01247f2670269816Russell King SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS); 24803560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King 24813560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King host->thread_isr |= intmask & (SDHCI_INT_CARD_INSERT | 24823560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King SDHCI_INT_CARD_REMOVE); 24833560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King result = IRQ_WAKE_THREAD; 248441005003bcaf4ecfc80e02af01247f2670269816Russell King } 2485d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 248641005003bcaf4ecfc80e02af01247f2670269816Russell King if (intmask & SDHCI_INT_CMD_MASK) 2487615413979487a1e25a3b76abbaa316280ca19d26Adrian Hunter sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK, 2488615413979487a1e25a3b76abbaa316280ca19d26Adrian Hunter &intmask); 2489964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 249041005003bcaf4ecfc80e02af01247f2670269816Russell King if (intmask & SDHCI_INT_DATA_MASK) 249141005003bcaf4ecfc80e02af01247f2670269816Russell King sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 2492d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 249341005003bcaf4ecfc80e02af01247f2670269816Russell King if (intmask & SDHCI_INT_BUS_POWER) 249441005003bcaf4ecfc80e02af01247f2670269816Russell King pr_err("%s: Card is consuming too much power!\n", 249541005003bcaf4ecfc80e02af01247f2670269816Russell King mmc_hostname(host->mmc)); 24963192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 2497781e989cf593c71d26bdca74f5e77b3651fc060eRussell King if (intmask & SDHCI_INT_CARD_INT) { 2498781e989cf593c71d26bdca74f5e77b3651fc060eRussell King sdhci_enable_sdio_irq_nolock(host, false); 2499781e989cf593c71d26bdca74f5e77b3651fc060eRussell King host->thread_isr |= SDHCI_INT_CARD_INT; 2500781e989cf593c71d26bdca74f5e77b3651fc060eRussell King result = IRQ_WAKE_THREAD; 2501781e989cf593c71d26bdca74f5e77b3651fc060eRussell King } 2502f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 250341005003bcaf4ecfc80e02af01247f2670269816Russell King intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE | 250441005003bcaf4ecfc80e02af01247f2670269816Russell King SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK | 250541005003bcaf4ecfc80e02af01247f2670269816Russell King SDHCI_INT_ERROR | SDHCI_INT_BUS_POWER | 250641005003bcaf4ecfc80e02af01247f2670269816Russell King SDHCI_INT_CARD_INT); 2507f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 250841005003bcaf4ecfc80e02af01247f2670269816Russell King if (intmask) { 250941005003bcaf4ecfc80e02af01247f2670269816Russell King unexpected |= intmask; 251041005003bcaf4ecfc80e02af01247f2670269816Russell King sdhci_writel(host, intmask, SDHCI_INT_STATUS); 251141005003bcaf4ecfc80e02af01247f2670269816Russell King } 2512d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2513781e989cf593c71d26bdca74f5e77b3651fc060eRussell King if (result == IRQ_NONE) 2514781e989cf593c71d26bdca74f5e77b3651fc060eRussell King result = IRQ_HANDLED; 2515d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 251641005003bcaf4ecfc80e02af01247f2670269816Russell King intmask = sdhci_readl(host, SDHCI_INT_STATUS); 251741005003bcaf4ecfc80e02af01247f2670269816Russell King } while (intmask && --max_loops); 2518d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 2519d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 2520d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25216379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein if (unexpected) { 25226379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein pr_err("%s: Unexpected interrupt 0x%08x.\n", 25236379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein mmc_hostname(host->mmc), unexpected); 25246379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein sdhci_dumpregs(host); 25256379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein } 2526f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2527d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 2528d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2529d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2530781e989cf593c71d26bdca74f5e77b3651fc060eRussell Kingstatic irqreturn_t sdhci_thread_irq(int irq, void *dev_id) 2531781e989cf593c71d26bdca74f5e77b3651fc060eRussell King{ 2532781e989cf593c71d26bdca74f5e77b3651fc060eRussell King struct sdhci_host *host = dev_id; 2533781e989cf593c71d26bdca74f5e77b3651fc060eRussell King unsigned long flags; 2534781e989cf593c71d26bdca74f5e77b3651fc060eRussell King u32 isr; 2535781e989cf593c71d26bdca74f5e77b3651fc060eRussell King 2536781e989cf593c71d26bdca74f5e77b3651fc060eRussell King spin_lock_irqsave(&host->lock, flags); 2537781e989cf593c71d26bdca74f5e77b3651fc060eRussell King isr = host->thread_isr; 2538781e989cf593c71d26bdca74f5e77b3651fc060eRussell King host->thread_isr = 0; 2539781e989cf593c71d26bdca74f5e77b3651fc060eRussell King spin_unlock_irqrestore(&host->lock, flags); 2540781e989cf593c71d26bdca74f5e77b3651fc060eRussell King 25413560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King if (isr & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 25423560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King sdhci_card_event(host->mmc); 25433560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King mmc_detect_change(host->mmc, msecs_to_jiffies(200)); 25443560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King } 25453560db8e247aa35bc6b287ec7ec51cd41abd512eRussell King 2546781e989cf593c71d26bdca74f5e77b3651fc060eRussell King if (isr & SDHCI_INT_CARD_INT) { 2547781e989cf593c71d26bdca74f5e77b3651fc060eRussell King sdio_run_irqs(host->mmc); 2548781e989cf593c71d26bdca74f5e77b3651fc060eRussell King 2549781e989cf593c71d26bdca74f5e77b3651fc060eRussell King spin_lock_irqsave(&host->lock, flags); 2550781e989cf593c71d26bdca74f5e77b3651fc060eRussell King if (host->flags & SDHCI_SDIO_IRQ_ENABLED) 2551781e989cf593c71d26bdca74f5e77b3651fc060eRussell King sdhci_enable_sdio_irq_nolock(host, true); 2552781e989cf593c71d26bdca74f5e77b3651fc060eRussell King spin_unlock_irqrestore(&host->lock, flags); 2553781e989cf593c71d26bdca74f5e77b3651fc060eRussell King } 2554781e989cf593c71d26bdca74f5e77b3651fc060eRussell King 2555781e989cf593c71d26bdca74f5e77b3651fc060eRussell King return isr ? IRQ_HANDLED : IRQ_NONE; 2556781e989cf593c71d26bdca74f5e77b3651fc060eRussell King} 2557781e989cf593c71d26bdca74f5e77b3651fc060eRussell King 2558d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2559d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2560d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 2561d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2562d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2563d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2564d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 2565ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liuvoid sdhci_enable_irq_wakeups(struct sdhci_host *host) 2566ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu{ 2567ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 val; 2568ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE 2569ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu | SDHCI_WAKE_ON_INT; 2570ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu 2571ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); 2572ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val |= mask ; 2573ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu /* Avoid fake wake up */ 2574ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 2575ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE); 2576ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); 2577ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu} 2578ad080d7916a4701fda29a442a69be4fd54d19a2eKevin LiuEXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); 2579ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu 25800b10f478d2ad93b3808d018327465aaab77c8d2bFabio Estevamstatic void sdhci_disable_irq_wakeups(struct sdhci_host *host) 2581ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu{ 2582ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 val; 2583ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE 2584ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu | SDHCI_WAKE_ON_INT; 2585ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu 2586ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); 2587ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val &= ~mask; 2588ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); 2589ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu} 2590d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 259129495aa04a30c21565243c5b9c028510446d242cManuel Laussint sdhci_suspend_host(struct sdhci_host *host) 2592d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 25937260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 25947260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2595cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Disable tuning since we are suspending */ 2596973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 2597c6ced0db08010ed75df221a2946c5228454b38d5Aaron Lu del_timer_sync(&host->tuning_timer); 2598cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 2599cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2600cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2601ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (!device_may_wakeup(mmc_dev(host->mmc))) { 2602b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier = 0; 2603b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, 0, SDHCI_INT_ENABLE); 2604b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 2605ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu free_irq(host->irq, host); 2606ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } else { 2607ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_enable_irq_wakeups(host); 2608ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu enable_irq_wake(host->irq); 2609ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } 26104ee14ec65810702a95d195757d307c41ecfd1c71Ulf Hansson return 0; 2611d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2612d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2613b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_suspend_host); 2614d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2615b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_resume_host(struct sdhci_host *host) 2616b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 26174ee14ec65810702a95d195757d307c41ecfd1c71Ulf Hansson int ret = 0; 2618d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2619a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2620b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) 2621b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->ops->enable_dma(host); 2622b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2623d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2624ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (!device_may_wakeup(mmc_dev(host->mmc))) { 2625781e989cf593c71d26bdca74f5e77b3651fc060eRussell King ret = request_threaded_irq(host->irq, sdhci_irq, 2626781e989cf593c71d26bdca74f5e77b3651fc060eRussell King sdhci_thread_irq, IRQF_SHARED, 2627781e989cf593c71d26bdca74f5e77b3651fc060eRussell King mmc_hostname(host->mmc), host); 2628ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (ret) 2629ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu return ret; 2630ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } else { 2631ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_disable_irq_wakeups(host); 2632ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu disable_irq_wake(host->irq); 2633ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } 2634d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 26356308d2905bd30290d90f28730828fd572161dd11Adrian Hunter if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) && 26366308d2905bd30290d90f28730828fd572161dd11Adrian Hunter (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) { 26376308d2905bd30290d90f28730828fd572161dd11Adrian Hunter /* Card keeps power but host controller does not */ 26386308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_init(host, 0); 26396308d2905bd30290d90f28730828fd572161dd11Adrian Hunter host->pwr = 0; 26406308d2905bd30290d90f28730828fd572161dd11Adrian Hunter host->clock = 0; 26416308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 26426308d2905bd30290d90f28730828fd572161dd11Adrian Hunter } else { 26436308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); 26446308d2905bd30290d90f28730828fd572161dd11Adrian Hunter mmiowb(); 26456308d2905bd30290d90f28730828fd572161dd11Adrian Hunter } 2646b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman 26477260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 26487260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2649cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Set the re-tuning expiration flag */ 2650973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) 2651cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2652cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 26532f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre return ret; 2654d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2655d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2656b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_resume_host); 2657d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 2658d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 265966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 266066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 266166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host) 266266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 266366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_get_sync(host->mmc->parent); 266466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 266566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 266666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host) 266766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 266866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter pm_runtime_mark_last_busy(host->mmc->parent); 266966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_put_autosuspend(host->mmc->parent); 267066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 267166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2672f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_on(struct sdhci_host *host) 2673f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 2674f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->runtime_suspended || host->bus_on) 2675f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter return; 2676f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter host->bus_on = true; 2677f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter pm_runtime_get_noresume(host->mmc->parent); 2678f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 2679f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter 2680f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_off(struct sdhci_host *host) 2681f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 2682f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->runtime_suspended || !host->bus_on) 2683f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter return; 2684f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter host->bus_on = false; 2685f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter pm_runtime_put_noidle(host->mmc->parent); 2686f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 2687f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter 268866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_suspend_host(struct sdhci_host *host) 268966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 269066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 269166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 269266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Disable tuning since we are suspending */ 2693973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 269466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter del_timer_sync(&host->tuning_timer); 269566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_NEEDS_RETUNING; 269666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 269766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 269866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 2699b537f94ce19583de1882f539a5cc49aa99260acaRussell King host->ier &= SDHCI_INT_CARD_INT; 2700b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 2701b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 270266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 270366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2704781e989cf593c71d26bdca74f5e77b3651fc060eRussell King synchronize_hardirq(host->irq); 270566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 270666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 270766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = true; 270866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 270966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 27108a125badbaf65d37cf09a866d1c8d496527da58bMarkus Pargmann return 0; 271166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 271266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_suspend_host); 271366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 271466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_resume_host(struct sdhci_host *host) 271566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 271666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 27178a125badbaf65d37cf09a866d1c8d496527da58bMarkus Pargmann int host_flags = host->flags; 271866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 271966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host_flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 272066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->ops->enable_dma) 272166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->ops->enable_dma(host); 272266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 272366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 272466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_init(host, 0); 272566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 272666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Force clock and power re-program */ 272766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->pwr = 0; 272866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->clock = 0; 272966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 273066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 273166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios); 273252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if ((host_flags & SDHCI_PV_ENABLED) && 273352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) { 273452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu spin_lock_irqsave(&host->lock, flags); 273552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu sdhci_enable_preset_value(host, true); 273652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu spin_unlock_irqrestore(&host->lock, flags); 273752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 273866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 273966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Set the re-tuning expiration flag */ 2740973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) 274166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_NEEDS_RETUNING; 274266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 274466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = false; 274666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable SDIO IRQ */ 2748ef104333a234f66cd13fd16632086a21b90fced6Russell King if (host->flags & SDHCI_SDIO_IRQ_ENABLED) 274966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, true); 275066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 275166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable Card Detection */ 275266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_card_detection(host); 275366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 275466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 275566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 27568a125badbaf65d37cf09a866d1c8d496527da58bMarkus Pargmann return 0; 275766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 275866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_resume_host); 275966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 276066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 276166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2762d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2763d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2764b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman * Device allocation/registration * 2765d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2766d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2767d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2768b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanstruct sdhci_host *sdhci_alloc_host(struct device *dev, 2769b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman size_t priv_size) 2770d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2771d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 2772d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2773d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2774b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(dev == NULL); 2775d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2776b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev); 2777d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 2778b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ERR_PTR(-ENOMEM); 2779d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2780d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 2781d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 2782d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2783b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return host; 2784b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman} 27858a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 2786b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_alloc_host); 2787d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2788b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_add_host(struct sdhci_host *host) 2789b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 2790b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman struct mmc_host *mmc; 2791bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity u32 caps[2] = {0, 0}; 2792f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 max_current_caps; 2793f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath unsigned int ocr_avail; 2794f5fa92e58bce2cbcce99c2c5260c0b338a1ef201Adrian Hunter unsigned int override_timeout_clk; 2795b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2796d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2797b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(host == NULL); 2798b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host == NULL) 2799b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -EINVAL; 2800d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2801b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = host->mmc; 2802d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2803b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (debug_quirks) 2804b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->quirks = debug_quirks; 280566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (debug_quirks2) 280666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->quirks2 = debug_quirks2; 2807d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2808f5fa92e58bce2cbcce99c2c5260c0b338a1ef201Adrian Hunter override_timeout_clk = host->timeout_clk; 2809f5fa92e58bce2cbcce99c2c5260c0b338a1ef201Adrian Hunter 281003231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_ALL); 2811d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 28124e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 28132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version = (host->version & SDHCI_SPEC_VER_MASK) 28142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman >> SDHCI_SPEC_VER_SHIFT; 281585105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version > SDHCI_SPEC_300) { 2816a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Unknown controller version (%d). " 2817b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "You may experience problems.\n", mmc_hostname(mmc), 28182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version); 28194a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 28204a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 2821f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps : 2822ccc92c23240cdf952ef7cc39ba563910dcbc9cbeMaxim Levitsky sdhci_readl(host, SDHCI_CAPABILITIES); 2823d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2824bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity if (host->version >= SDHCI_SPEC_300) 2825bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity caps[1] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? 2826bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity host->caps1 : 2827bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1); 2828f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2829b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_FORCE_DMA) 2830a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2831f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else if (!(caps[0] & SDHCI_CAN_DO_SDMA)) 2832a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors DBG("Controller doesn't have SDMA capability\n"); 28336743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 2834a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2835d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2836b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) && 2837a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA)) { 2838cee687ce4ab1197e20d4dacc09df01531362fdbdRolf Eike Beer DBG("Disabling DMA as it is marked broken\n"); 2839a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= ~SDHCI_USE_SDMA; 28407c168e3db7d900008ee304574057e0dc1a8505afFeng Tang } 28417c168e3db7d900008ee304574057e0dc1a8505afFeng Tang 2842f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if ((host->version >= SDHCI_SPEC_200) && 2843f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath (caps[0] & SDHCI_CAN_DO_ADMA2)) 2844a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_ADMA; 28452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 28462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) && 28472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) { 28482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Disabling ADMA as it is marked broken\n"); 28492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 28502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 28512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 2852a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2853b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) { 2854b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma(host)) { 28556606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: No suitable DMA available - falling back to PIO\n", 2856b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(mmc)); 2857a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= 2858a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA); 2859b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2860d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2861d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2862d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 28632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 28642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 28652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We need to allocate descriptors for all sg entries 28662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (128) and potentially one alignment transfer for 28672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * each of those entries. 28682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 28694e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer host->adma_desc = dma_alloc_coherent(mmc_dev(mmc), 2870d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King ADMA_SIZE, &host->adma_addr, 2871d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King GFP_KERNEL); 28722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = kmalloc(128 * 4, GFP_KERNEL); 28732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (!host->adma_desc || !host->align_buffer) { 28744e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer dma_free_coherent(mmc_dev(mmc), ADMA_SIZE, 2875d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->adma_desc, host->adma_addr); 28762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 28776606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n", 28782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc_hostname(mmc)); 28792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 2880d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->adma_desc = NULL; 2881d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->align_buffer = NULL; 2882d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King } else if (host->adma_addr & 3) { 28836606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: unable to allocate aligned ADMA descriptor\n", 28846606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 2885d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->flags &= ~SDHCI_USE_ADMA; 28864e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer dma_free_coherent(mmc_dev(mmc), ADMA_SIZE, 2887d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->adma_desc, host->adma_addr); 2888d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King kfree(host->align_buffer); 2889d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->adma_desc = NULL; 2890d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->align_buffer = NULL; 28912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 28922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 28932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 28947659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman /* 28957659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * If we use DMA, then it's up to the caller to set the DMA 28967659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask, but PIO does not need the hw shim so we set a new 28977659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask here in that case. 28987659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman */ 2899a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) { 29007659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->dma_mask = DMA_BIT_MASK(64); 29014e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer mmc_dev(mmc)->dma_mask = &host->dma_mask; 29027659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman } 2903d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2904c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao if (host->version >= SDHCI_SPEC_300) 2905f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_V3_BASE_MASK) 2906c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2907c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao else 2908f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_BASE_MASK) 2909c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2910c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao 29114240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk *= 1000000; 2912f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov if (host->max_clk == 0 || host->quirks & 2913f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) { 29144240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks if (!host->ops->get_max_clock) { 2915a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't specify base clock " 29164240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "frequency.\n", mmc_hostname(mmc)); 29174240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks return -ENODEV; 29184240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks } 29194240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk = host->ops->get_max_clock(host); 29208ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 2921d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2922d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2923c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case of Host Controller v3.00, find out whether clock 2924c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is supported. 2925c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2926c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul = (caps[1] & SDHCI_CLOCK_MUL_MASK) >> 2927c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath SDHCI_CLOCK_MUL_SHIFT; 2928c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2929c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2930c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case the value in Clock Multiplier is 0, then programmable 2931c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * clock mode is not supported, otherwise the actual clock 2932c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is one more than the value of Clock Multiplier 2933c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * in the Capabilities Register. 2934c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2935c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) 2936c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul += 1; 2937c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2938c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2939d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 2940d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 2942c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk; 2943ce5f036bbbfc6c21d7b55b8fdaa2e2bd56392d94Marek Szyprowski if (host->ops->get_min_clock) 2944a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov mmc->f_min = host->ops->get_min_clock(host); 2945c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else if (host->version >= SDHCI_SPEC_300) { 2946c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 2947c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = (host->max_clk * host->clk_mul) / 1024; 2948c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk * host->clk_mul; 2949c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 2950c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300; 2951c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 29520397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200; 295315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity 295428aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { 295528aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong host->timeout_clk = (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> 295628aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong SDHCI_TIMEOUT_CLK_SHIFT; 295728aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong if (host->timeout_clk == 0) { 295828aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong if (host->ops->get_timeout_clock) { 295928aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong host->timeout_clk = 296028aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong host->ops->get_timeout_clock(host); 296128aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong } else { 296228aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong pr_err("%s: Hardware doesn't specify timeout clock frequency.\n", 296328aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong mmc_hostname(mmc)); 296428aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong return -ENODEV; 296528aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong } 2966272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2967272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 296828aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) 296928aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong host->timeout_clk *= 1000; 2970272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 297128aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong mmc->max_busy_timeout = host->ops->get_max_timeout_count ? 2972a6ff5aeb9b31f7b71a8566f8e130ad66bd103d20Aisheng Dong host->ops->get_max_timeout_count(host) : 1 << 27; 297328aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong mmc->max_busy_timeout /= host->timeout_clk; 297428aab053396125c8e191537ec2b9781ec0174b04Aisheng Dong } 297558d1246db340793c408b22884598e4ce4d1d4abaAdrian Hunter 2976f5fa92e58bce2cbcce99c2c5260c0b338a1ef201Adrian Hunter if (override_timeout_clk) 2977f5fa92e58bce2cbcce99c2c5260c0b338a1ef201Adrian Hunter host->timeout_clk = override_timeout_clk; 2978f5fa92e58bce2cbcce99c2c5260c0b338a1ef201Adrian Hunter 2979e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; 2980781e989cf593c71d26bdca74f5e77b3651fc060eRussell King mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD; 2981e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 2982e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) 2983e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->flags |= SDHCI_AUTO_CMD12; 29845fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov 29858edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin /* Auto-CMD23 stuff only works in ADMA or PIO. */ 29864f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin if ((host->version >= SDHCI_SPEC_300) && 29878edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin ((host->flags & SDHCI_USE_ADMA) || 29884f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin !(host->flags & SDHCI_USE_SDMA))) { 29898edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin host->flags |= SDHCI_AUTO_CMD23; 29908edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc)); 29918edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } else { 29928edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 unavailable\n", mmc_hostname(mmc)); 29938edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 29948edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 299515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 299615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * A controller may support 8-bit width, but the board itself 299715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * might not have the pins brought out. Boards that support 299815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in 299915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * their platform code before calling sdhci_add_host(), and we 300015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * won't assume 8-bit width for hosts without that CAP. 300115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 30025fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) 300315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity mmc->caps |= MMC_CAP_4_BIT_DATA; 3004d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 300563ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23) 300663ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang mmc->caps &= ~MMC_CAP_CMD23; 300763ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang 3008f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_DO_HISPD) 3009a29e7e18bddde778deb2cb101dbceca56b15e05eZhangfei Gao mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; 3010cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 3011176d1ed426a2a73a87c62a8aa05f6d002353cd50Jaehoon Chung if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && 30124e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer !(mmc->caps & MMC_CAP_NONREMOVABLE)) 301368d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov mmc->caps |= MMC_CAP_NEEDS_POLL; 301468d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 30153a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger /* If there are external regulators, get them */ 30163a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (mmc_regulator_get_supply(mmc) == -EPROBE_DEFER) 30173a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger return -EPROBE_DEFER; 30183a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger 30196231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* If vqmmc regulator and no 1.8V signalling, then there's no UHS */ 30203a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vqmmc)) { 30213a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger ret = regulator_enable(mmc->supply.vqmmc); 30223a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!regulator_is_supported_voltage(mmc->supply.vqmmc, 1700000, 30233a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger 1950000)) 30248363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu caps[1] &= ~(SDHCI_SUPPORT_SDR104 | 30258363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu SDHCI_SUPPORT_SDR50 | 30268363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu SDHCI_SUPPORT_DDR50); 3027a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball if (ret) { 3028a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball pr_warn("%s: Failed to enable vqmmc regulator: %d\n", 3029a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball mmc_hostname(mmc), ret); 30303a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger mmc->supply.vqmmc = NULL; 3031a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball } 30328363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } 30336231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 30346a66180a252f5856fc25de69c6313831f343f50fDaniel Drake if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) 30356a66180a252f5856fc25de69c6313831f343f50fDaniel Drake caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | 30366a66180a252f5856fc25de69c6313831f343f50fDaniel Drake SDHCI_SUPPORT_DDR50); 30376a66180a252f5856fc25de69c6313831f343f50fDaniel Drake 30384188bba0e9e7ba58d231b528df495666f2742b74Al Cooper /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ 30394188bba0e9e7ba58d231b528df495666f2742b74Al Cooper if (caps[1] & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | 30404188bba0e9e7ba58d231b528df495666f2742b74Al Cooper SDHCI_SUPPORT_DDR50)) 3041f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; 3042f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3043f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* SDR104 supports also implies SDR50 support */ 3044156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO if (caps[1] & SDHCI_SUPPORT_SDR104) { 3045f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50; 3046156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO /* SD3.0: SDR104 is supported so (for eMMC) the caps2 3047156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO * field can be promoted to support HS200. 3048156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO */ 3049adc828556dfc3f87a5c1338fc5412cbec3c0b529Chuanxiao.Dong if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200)) { 305013868bf20f2f2c305f96e23620b024e167d6f9cbDavid Cohen mmc->caps2 |= MMC_CAP2_HS200; 3051adc828556dfc3f87a5c1338fc5412cbec3c0b529Chuanxiao.Dong if (IS_ERR(mmc->supply.vqmmc) || 3052adc828556dfc3f87a5c1338fc5412cbec3c0b529Chuanxiao.Dong !regulator_is_supported_voltage 3053adc828556dfc3f87a5c1338fc5412cbec3c0b529Chuanxiao.Dong (mmc->supply.vqmmc, 1100000, 1300000)) 3054adc828556dfc3f87a5c1338fc5412cbec3c0b529Chuanxiao.Dong mmc->caps2 &= ~MMC_CAP2_HS200_1_2V_SDR; 3055adc828556dfc3f87a5c1338fc5412cbec3c0b529Chuanxiao.Dong } 3056156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO } else if (caps[1] & SDHCI_SUPPORT_SDR50) 3057f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR50; 3058f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 30599107ebbf9652c033eb5dd10a6ea34a132db3cde1Micky Ching if ((caps[1] & SDHCI_SUPPORT_DDR50) && 30609107ebbf9652c033eb5dd10a6ea34a132db3cde1Micky Ching !(host->quirks2 & SDHCI_QUIRK2_BROKEN_DDR50)) 3061f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_DDR50; 3062f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3063069c9f142822d552ec885572945d8bce9eff0519Girish K S /* Does the host need tuning for SDR50? */ 3064b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (caps[1] & SDHCI_USE_SDR50_TUNING) 3065b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->flags |= SDHCI_SDR50_NEEDS_TUNING; 3066b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 3067156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO /* Does the host need tuning for SDR104 / HS200? */ 3068069c9f142822d552ec885572945d8bce9eff0519Girish K S if (mmc->caps2 & MMC_CAP2_HS200) 3069156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO host->flags |= SDHCI_SDR104_NEEDS_TUNING; 3070069c9f142822d552ec885572945d8bce9eff0519Girish K S 3071d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Driver Type(s) (A, C, D) supported by the host */ 3072d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_A) 3073d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_A; 3074d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_C) 3075d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_C; 3076d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_D) 3077d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_D; 3078d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 3079cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initial value for re-tuning timer count */ 3080cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> 3081cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_TIMER_COUNT_SHIFT; 3082cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 3083cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 3084cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case Re-tuning Timer is not disabled, the actual value of 3085cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * re-tuning timer will be 2 ^ (n - 1). 3086cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 3087cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->tuning_count) 3088cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = 1 << (host->tuning_count - 1); 3089cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 3090cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Re-tuning mode supported by the Host Controller */ 3091cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_mode = (caps[1] & SDHCI_RETUNING_MODE_MASK) >> 3092cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_MODE_SHIFT; 3093cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 30948f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail = 0; 3095bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 3096f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 3097f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * According to SD Host Controller spec v3.00, if the Host System 3098f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * can afford more than 150mA, Host Driver should set XPC to 1. Also 3099f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * the value is meaningful only if Voltage Support in the Capabilities 3100f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * register is set. The actual current value is 4 times the register 3101f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * value. 3102f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 3103f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT); 31043a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) { 3105ae9060377a67a0840f980bc0e2cb32af07baf479Chuanxiao.Dong int curr = regulator_get_current_limit(mmc->supply.vmmc); 3106bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity if (curr > 0) { 3107bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 3108bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity /* convert to SDHCI_MAX_CURRENT format */ 3109bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = curr/1000; /* convert to mA */ 3110bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER; 3111bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 3112bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = min_t(u32, curr, SDHCI_MAX_CURRENT_LIMIT); 3113bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity max_current_caps = 3114bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_330_SHIFT) | 3115bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_300_SHIFT) | 3116bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_180_SHIFT); 3117bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity } 3118bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity } 3119f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3120f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_330) { 31218f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34; 3122f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 312355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_330 = ((max_current_caps & 3124f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_MASK) >> 3125f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_SHIFT) * 3126f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3127f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3128f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_300) { 31298f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31; 3130f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 313155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_300 = ((max_current_caps & 3132f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_MASK) >> 3133f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_SHIFT) * 3134f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3135f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3136f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_180) { 31378f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_165_195; 31388f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai 313955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_180 = ((max_current_caps & 3140f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_MASK) >> 3141f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_SHIFT) * 3142f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3143f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3144f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 314552221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger /* If OCR set by external regulators, use it instead */ 31463a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (mmc->ocr_avail) 314752221610dd84dc3e9196554f0292ca9e8ab3541dTim Kryger ocr_avail = mmc->ocr_avail; 31483a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger 3149c0b887b66c95fe5abaac071b8332b8c21113d84bHaijun Zhang if (host->ocr_mask) 31503a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger ocr_avail &= host->ocr_mask; 3151c0b887b66c95fe5abaac071b8332b8c21113d84bHaijun Zhang 31528f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail = ocr_avail; 31538f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio = ocr_avail; 31548f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sdio) 31558f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio &= host->ocr_avail_sdio; 31568f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd = ocr_avail; 31578f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 31588f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= host->ocr_avail_sd; 31598f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai else /* normal SD controllers don't support 1.8V */ 31608f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= ~MMC_VDD_165_195; 31618f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc = ocr_avail; 31628f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_mmc) 31638f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc &= host->ocr_avail_mmc; 3164146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 3165146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 3166a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't report any " 3167b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "support voltages.\n", mmc_hostname(mmc)); 3168b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -ENODEV; 3169146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 3170146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 3171d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 3172d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 31742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Maximum number of segments. Depends on if the hardware 31752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * can do scatter/gather or not. 3176d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 31772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 3178a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 3179a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors else if (host->flags & SDHCI_USE_SDMA) 3180a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 1; 31812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else /* PIO */ 3182a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 3183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3185bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 318655db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 3187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 318855db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 3189d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3191d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 31922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * of bytes. When doing hardware scatter/gather, each entry cannot 31932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * be larger than 64 KiB though. 3194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 319530652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->flags & SDHCI_USE_ADMA) { 319630652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) 319730652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65535; 319830652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson else 319930652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65536; 320030652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } else { 32012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_seg_size = mmc->max_req_size; 320230652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } 3203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3205fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 3206fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 3207fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 32080633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) { 32090633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 2; 32100633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } else { 3211f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >> 32120633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov SDHCI_MAX_BLOCK_SHIFT; 32130633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (mmc->max_blk_size >= 3) { 32146606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Invalid maximum block size, assuming 512 bytes\n", 32156606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(mmc)); 32160633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 0; 32170633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 32180633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 32190633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov 32200633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 512 << mmc->max_blk_size; 3221fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 3222fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 322355db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 322455db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 32251388eefd5a5e6aaa3cb04070bfc2b944c1d24b82Ben Dooks mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 322655db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 322755db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 3228d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 3229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 3230d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 3231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 3232d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3233e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 3234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3235cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->version >= SDHCI_SPEC_300) { 3236b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath init_waitqueue_head(&host->buf_ready_int); 3237b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 3238cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initialize re-tuning timer */ 3239cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath init_timer(&host->tuning_timer); 3240cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.data = (unsigned long)host; 3241cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.function = sdhci_tuning_timer; 3242cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 3243cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 32442af502ca640969e335c02be3834b86c5b58be591Shawn Guo sdhci_init(host, 0); 32452af502ca640969e335c02be3834b86c5b58be591Shawn Guo 3246781e989cf593c71d26bdca74f5e77b3651fc060eRussell King ret = request_threaded_irq(host->irq, sdhci_irq, sdhci_thread_irq, 3247781e989cf593c71d26bdca74f5e77b3651fc060eRussell King IRQF_SHARED, mmc_hostname(mmc), host); 32480fc81ee3102efedd4571e28372d2242c694c67ecMark Brown if (ret) { 32490fc81ee3102efedd4571e28372d2242c694c67ecMark Brown pr_err("%s: Failed to request IRQ %d: %d\n", 32500fc81ee3102efedd4571e28372d2242c694c67ecMark Brown mmc_hostname(mmc), host->irq, ret); 32518ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 32520fc81ee3102efedd4571e28372d2242c694c67ecMark Brown } 3253d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 3255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 3256d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 3257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3258f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 32595dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa snprintf(host->led_name, sizeof(host->led_name), 32605dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa "%s::", mmc_hostname(mmc)); 32615dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa host->led.name = host->led_name; 32622f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness = LED_OFF; 32632f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.default_trigger = mmc_hostname(mmc); 32642f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness_set = sdhci_led_control; 32652f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 3266b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = led_classdev_register(mmc_dev(mmc), &host->led); 32670fc81ee3102efedd4571e28372d2242c694c67ecMark Brown if (ret) { 32680fc81ee3102efedd4571e28372d2242c694c67ecMark Brown pr_err("%s: Failed to register LED device: %d\n", 32690fc81ee3102efedd4571e28372d2242c694c67ecMark Brown mmc_hostname(mmc), ret); 32702f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman goto reset; 32710fc81ee3102efedd4571e28372d2242c694c67ecMark Brown } 32722f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 32732f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 32745f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 32755f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 3276d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 3277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3278a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info("%s: SDHCI controller on %s [%s] using %s\n", 3279d1b268630875a7713b5d468a0c03403c5b721c8eKay Sievers mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)), 3280a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_ADMA) ? "ADMA" : 3281a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO"); 3282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 32837260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 32847260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 3285d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 3286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3287f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 32882f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanreset: 328903231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_ALL); 3290b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, 0, SDHCI_INT_ENABLE); 3291b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 32922f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman free_irq(host->irq, host); 32932f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 32948ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 3295d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 3296d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3297d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 3298d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3299d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3300b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_add_host); 3301d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 33021e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanvoid sdhci_remove_host(struct sdhci_host *host, int dead) 3303b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 33043a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger struct mmc_host *mmc = host->mmc; 33051e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman unsigned long flags; 33061e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33071e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (dead) { 33081e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_lock_irqsave(&host->lock, flags); 33091e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33101e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->flags |= SDHCI_DEVICE_DEAD; 33111e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33121e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->mrq) { 3313a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Controller removed during " 33144e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer " transfer!\n", mmc_hostname(mmc)); 33151e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33161e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 33171e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman tasklet_schedule(&host->finish_tasklet); 33181e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 33191e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33201e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 33211e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 33221e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33237260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 33247260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 33254e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer mmc_remove_host(mmc); 3326d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3327f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 33282f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman led_classdev_unregister(&host->led); 33292f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 33302f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 33311e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!dead) 333203231f9b781f24205c0af0398ce3cbef70090939Russell King sdhci_do_reset(host, SDHCI_RESET_ALL); 3333d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3334b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, 0, SDHCI_INT_ENABLE); 3335b537f94ce19583de1882f539a5cc49aa99260acaRussell King sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 3336d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 3337d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3338d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 3339d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3340d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 33412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 33423a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vmmc)) 33433a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger regulator_disable(mmc->supply.vmmc); 33449bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 33453a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger if (!IS_ERR(mmc->supply.vqmmc)) 33463a48edc4bd68f841c07c7bc86358d2f02133f247Tim Kryger regulator_disable(mmc->supply.vqmmc); 33476231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 3348d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King if (host->adma_desc) 33494e743f1fc8bd24d1bc185e4d7b13f7b74c9c5423Markus Mayer dma_free_coherent(mmc_dev(mmc), ADMA_SIZE, 3350d1e49f77d7c7b75fdc022e1d46c1549bbc91c5b7Russell King host->adma_desc, host->adma_addr); 33512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 33522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 33532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = NULL; 33542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = NULL; 3355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3356d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3357b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_remove_host); 3358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3359b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanvoid sdhci_free_host(struct sdhci_host *host) 3360d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3361b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_free_host(host->mmc); 3362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3364b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_free_host); 3365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 3367d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3368d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 3369d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3370d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 3371d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 3373d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3374a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME 337552fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 3376a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 3377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3378b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return 0; 3379d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3380d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 3382d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3383d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3384d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3385d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 3386d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 3387d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3388df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 338966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Huntermodule_param(debug_quirks2, uint, 0444); 33906743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 339132710e8fd537adeb53f98dec92e4a77caac512f5Pierre OssmanMODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 3392b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver"); 3393d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 33946743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 3395df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 339666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterMODULE_PARM_DESC(debug_quirks2, "Force certain other quirks."); 3397