sdhci.c revision 197160d52e859575ff0ad1afd674ab2a825b9f83
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 47df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanstatic unsigned int debug_quirks = 0; 4866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic unsigned int debug_quirks2; 496743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 50d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *); 51d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 52d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *); 53069c9f142822d552ec885572945d8bce9eff0519Girish K Sstatic int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); 54cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data); 5552983382c74f59a3953e622d7661a24e1bc4388aKevin Liustatic void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); 56d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 5766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 5866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host); 5966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host); 60f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_on(struct sdhci_host *host); 61f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_off(struct sdhci_host *host); 6266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#else 6366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_get(struct sdhci_host *host) 6466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 6666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 6766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic inline int sdhci_runtime_pm_put(struct sdhci_host *host) 6866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 6966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 7066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 71f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_on(struct sdhci_host *host) 72f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 73f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 74f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_off(struct sdhci_host *host) 75f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 76f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 7766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 7866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 79d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_dumpregs(struct sdhci_host *host) 80d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 81a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n", 82412ab659b2bdad6afac8f84daf2a8a393145dcaePhilip Rakity mmc_hostname(host->mmc)); 83d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 84a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n", 854e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_DMA_ADDRESS), 864e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_HOST_VERSION)); 87a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n", 884e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_SIZE), 894e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_BLOCK_COUNT)); 90a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n", 914e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_ARGUMENT), 924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_TRANSFER_MODE)); 93a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n", 944e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_PRESENT_STATE), 954e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_HOST_CONTROL)); 96a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n", 974e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_POWER_CONTROL), 984e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL)); 99a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n", 1004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_WAKE_UP_CONTROL), 1014e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_CLOCK_CONTROL)); 102a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n", 1034e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, SDHCI_TIMEOUT_CONTROL), 1044e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_STATUS)); 105a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n", 1064e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_INT_ENABLE), 1074e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_SIGNAL_ENABLE)); 108a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n", 1094e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_ACMD12_ERR), 1104e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readw(host, SDHCI_SLOT_INT_STATUS)); 111a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Caps: 0x%08x | Caps_1: 0x%08x\n", 1124e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_CAPABILITIES), 113e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1)); 114a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Cmd: 0x%08x | Max curr: 0x%08x\n", 115e8120ad129c160ff5b2e2b197d025a2cd661c2f2Philip Rakity sdhci_readw(host, SDHCI_COMMAND), 1164e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readl(host, SDHCI_MAX_CURRENT)); 117a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": Host ctl2: 0x%08x\n", 118f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath sdhci_readw(host, SDHCI_HOST_CONTROL2)); 119d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 120be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks if (host->flags & SDHCI_USE_ADMA) 121a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n", 122be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ERROR), 123be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks readl(host->ioaddr + SDHCI_ADMA_ADDRESS)); 124be3f4ae0c0c56aab903aceaceed4b9d8418e180eBen Dooks 125a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_debug(DRIVER_NAME ": ===========================================\n"); 126d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 127d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 128d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 129d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 130d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Low level functions * 131d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 132d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 133d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set) 1357260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1367260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov u32 ier; 1377260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1387260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1397260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier &= ~clear; 1407260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov ier |= set; 1417260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_INT_ENABLE); 1427260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); 1437260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1447260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1457260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_unmask_irqs(struct sdhci_host *host, u32 irqs) 1467260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1477260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, 0, irqs); 1487260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1497260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1507260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_mask_irqs(struct sdhci_host *host, u32 irqs) 1517260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1527260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, irqs, 0); 1537260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1547260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1557260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_set_card_detection(struct sdhci_host *host, bool enable) 1567260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 157d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo u32 present, irqs; 1587260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 159c79396c191bc19703df6eb6bbd0f673ed0df6c9dAdrian Hunter if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || 16087b87a3fc0eec58d95e4216392f889a26439ad22Daniel Drake (host->mmc->caps & MMC_CAP_NONREMOVABLE)) 16166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return; 16266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 163d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 164d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_CARD_PRESENT; 165d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo irqs = present ? SDHCI_INT_CARD_REMOVE : SDHCI_INT_CARD_INSERT; 166d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 1677260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov if (enable) 1687260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, irqs); 1697260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 1707260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, irqs); 1717260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1727260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1737260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_enable_card_detection(struct sdhci_host *host) 1747260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1757260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, true); 1767260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1777260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 1787260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_disable_card_detection(struct sdhci_host *host) 1797260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 1807260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_set_card_detection(host, false); 1817260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 1827260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_reset(struct sdhci_host *host, u8 mask) 184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 185e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman unsigned long timeout; 186063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov u32 uninitialized_var(ier); 187e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 188b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { 1894e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & 1908a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman SDHCI_CARD_PRESENT)) 1918a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman return; 1928a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman } 1938a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 194063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) 195063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov ier = sdhci_readl(host, SDHCI_INT_ENABLE); 196063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 197393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity if (host->ops->platform_reset_enter) 198393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity host->ops->platform_reset_enter(host, mask); 199393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity 2004e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); 201d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 202f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (mask & SDHCI_RESET_ALL) { 203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = 0; 204f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter /* Reset-all turns off SD Bus Power */ 205f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) 206f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter sdhci_runtime_pm_bus_off(host); 207f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter } 208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 209e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* Wait max 100 ms */ 210e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout = 100; 211e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman 212e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman /* hw clears the bit when it's done */ 2134e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) { 214e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman if (timeout == 0) { 215a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Reset 0x%x never completed.\n", 216e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mmc_hostname(host->mmc), (int)mask); 217e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman sdhci_dumpregs(host); 218e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman return; 219e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman } 220e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman timeout--; 221e16514d8d86ecbde18a2a7495cf028861b34c157Pierre Ossman mdelay(1); 222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 223063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov 224393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity if (host->ops->platform_reset_exit) 225393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity host->ops->platform_reset_exit(host, mask); 226393c1a34dd852dbf0c409ec94dd48057100480eaPhilip Rakity 227063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) 228063a9dbbce5559770b7e2e2f51bd29adf3ab9b1eAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier); 2293abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie 2303abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2313abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie if ((host->ops->enable_dma) && (mask & SDHCI_RESET_ALL)) 2323abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie host->ops->enable_dma(host); 2333abc1e804253add41990cbe1461e79c1165108e0Shaohui Xie } 234d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 235d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2362f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); 2372f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2382f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitrestatic void sdhci_init(struct sdhci_host *host, int soft) 239d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2402f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) 2412f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA); 2422f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre else 2432f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_reset(host, SDHCI_RESET_ALL); 244d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2457260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, 2467260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | 2473192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | 2483192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | 2496aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE); 2502f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre 2512f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre if (soft) { 2522f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre /* force clock reconfiguration */ 2532f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre host->clock = 0; 2542f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_set_ios(host->mmc, &host->mmc->ios); 2552f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre } 2567260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov} 257d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2587260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsovstatic void sdhci_reinit(struct sdhci_host *host) 2597260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov{ 2602f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre sdhci_init(host, 0); 261b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu /* 262b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * Retuning stuffs are affected by different cards inserted and only 263b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * applicable to UHS-I cards. So reset these fields to their initial 264b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu * value when card is removed. 265b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu */ 266973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 267973905feab85416784f36cc94b868392fd465ef4Aaron Lu host->flags &= ~SDHCI_USING_RETUNING_TIMER; 268973905feab85416784f36cc94b868392fd465ef4Aaron Lu 269b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu del_timer_sync(&host->tuning_timer); 270b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu host->flags &= ~SDHCI_NEEDS_RETUNING; 271b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu host->mmc->max_blk_count = 272b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 273b67c6b411dcf17199e1dfdf18da8b1c6caf73e6eAaron Lu } 2747260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 275d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 276d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_activate_led(struct sdhci_host *host) 278d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 279d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 280d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 282d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl |= SDHCI_CTRL_LED; 2834e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 284d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 285d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_deactivate_led(struct sdhci_host *host) 287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2904e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 291d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman ctrl &= ~SDHCI_CTRL_LED; 2924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 293d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 294d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 295f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 2962f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanstatic void sdhci_led_control(struct led_classdev *led, 2972f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman enum led_brightness brightness) 2982f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman{ 2992f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman struct sdhci_host *host = container_of(led, struct sdhci_host, led); 3002f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman unsigned long flags; 3012f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 3022f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_lock_irqsave(&host->lock, flags); 3032f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 30466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 30566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 30666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 3072f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman if (brightness == LED_OFF) 3082f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_deactivate_led(host); 3092f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman else 3102f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_activate_led(host); 31166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterout: 3122f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 3132f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman} 3142f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 3152f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 316d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 318d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Core functions * 319d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 320d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 321d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 322a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_read_block_pio(struct sdhci_host *host) 323d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3247659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3257659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3267244b85bd17313d7d300ee93ec7bfbca1f4ccf3dSteven Noonan u32 uninitialized_var(scratch); 3277659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 328d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 329a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO reading\n"); 330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 331a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3327659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 333d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3347659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 335d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 336a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3377659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3387659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 339d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3407659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 341d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3427659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3437659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 34414d836e7499c53a1f6a65086c3d11600e871a971Alex Dubov 3457659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 346d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3477659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3487659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (chunk == 0) { 3494e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov scratch = sdhci_readl(host, SDHCI_BUFFER); 3507659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 4; 351a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3527659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3537659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman *buf = scratch & 0xFF; 3547659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3557659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3567659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch >>= 8; 3577659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk--; 3587659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 359d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 360a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 3617659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3627659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 3637659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3647659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 365a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 367a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_write_block_pio(struct sdhci_host *host) 368a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 3697659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman unsigned long flags; 3707659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman size_t blksize, len, chunk; 3717659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u32 scratch; 3727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman u8 *buf; 373d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 374a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO writing\n"); 375a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 376a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman blksize = host->data->blksz; 3777659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 3787659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 379d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3807659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_save(flags); 381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 382a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman while (blksize) { 3837659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (!sg_miter_next(&host->sg_miter)) 3847659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman BUG(); 385a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 3867659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len = min(host->sg_miter.length, blksize); 3877659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3887659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman blksize -= len; 3897659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->sg_miter.consumed = len; 3907659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3917659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf = host->sg_miter.addr; 392d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3937659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman while (len) { 3947659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch |= (u32)*buf << (chunk * 8); 3957659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 3967659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman buf++; 3977659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk++; 3987659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman len--; 3997659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 4007659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if ((chunk == 4) || ((len == 0) && (blksize == 0))) { 4014e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, scratch, SDHCI_BUFFER); 4027659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman chunk = 0; 4037659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman scratch = 0; 404d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 405d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 406d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 4077659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 4087659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman sg_miter_stop(&host->sg_miter); 4097659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman 4107659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman local_irq_restore(flags); 411a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman} 412a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 413a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossmanstatic void sdhci_transfer_pio(struct sdhci_host *host) 414a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman{ 415a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman u32 mask; 416a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 417a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman BUG_ON(!host->data); 418a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 4197659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 420a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman return; 421a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 422a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 423a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_DATA_AVAILABLE; 424a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 425a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman mask = SDHCI_SPACE_AVAILABLE; 426a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman 4274a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman /* 4284a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * Some controllers (JMicron JMB38x) mess up the buffer bits 4294a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * for transfers < 4 bytes. As long as it is just one block, 4304a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman * we can ignore the bits. 4314a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman */ 4324a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) && 4334a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman (host->data->blocks == 1)) 4344a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman mask = ~0; 4354a3cba32cb514168bb2516c045b178e6660421d1Pierre Ossman 4364e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 4373e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY) 4383e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov udelay(100); 4393e3bf20756aeee57a40fd37b923263c9a51b8c68Anton Vorontsov 440a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (host->data->flags & MMC_DATA_READ) 441a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_read_block_pio(host); 442a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman else 443a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman sdhci_write_block_pio(host); 444d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4457659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks--; 4467659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman if (host->blocks == 0) 447a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman break; 448a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman } 449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 450a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman DBG("PIO transfer complete.\n"); 451d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 4532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) 4542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_save(*flags); 456482fce997e143a8d5429406fe066d31aa76ef70aCong Wang return kmap_atomic(sg_page(sg)) + sg->offset; 4572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) 4602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 461482fce997e143a8d5429406fe066d31aa76ef70aCong Wang kunmap_atomic(buffer); 4622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman local_irq_restore(*flags); 4632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 4642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 465118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooksstatic void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd) 466118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks{ 4679e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le32 *dataddr = (__le32 __force *)(desc + 4); 4689e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks __le16 *cmdlen = (__le16 __force *)desc; 469118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4709e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks /* SDHCI specification says ADMA descriptors should be 4 byte 4719e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks * aligned, so using 16 or 32bit operations should be safe. */ 472118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4739e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[0] = cpu_to_le16(cmd); 4749e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks cmdlen[1] = cpu_to_le16(len); 4759e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks 4769e506f35b1dc327c448d4791bc098f07b9b2efe9Ben Dooks dataddr[0] = cpu_to_le32(addr); 477118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks} 478118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks 4798f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanstatic int sdhci_adma_table_pre(struct sdhci_host *host, 4802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 4812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 4822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 4832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *desc; 4852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 4862134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t addr; 4872134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_addr_t align_addr; 4882134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int len, offset; 4892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 4912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i; 4922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 4932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 4942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 4952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 4962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The spec does not specify endianness of descriptor table. 4972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We currently guess that it is LE. 4982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 4992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 5012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 5022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 5032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 5042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The ADMA descriptor table is mapped further down as we 5072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * need to fill it with data first. 5082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr = dma_map_single(mmc_dev(host->mmc), 5112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer, 128 * 4, direction); 5128d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr)) 5138f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto fail; 5142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->align_addr & 0x3); 5152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->sg_count = dma_map_sg(mmc_dev(host->mmc), 5172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg, data->sg_len, direction); 5188f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->sg_count == 0) 5198f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_align; 5202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc = host->adma_desc; 5222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 5232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr = host->align_addr; 5252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 5272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr = sg_dma_address(sg); 5282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len = sg_dma_len(sg); 5292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * The SDHCI specification states that ADMA 5322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * addresses must be 32-bit aligned. If they 5332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * aren't, then we use a bounce buffer for 5342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * the (up to three) bytes that screw up the 5352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment. 5362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman offset = (4 - (addr & 0x3)) & 0x3; 5382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (offset) { 5392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 5416cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 5422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(align, buffer, offset); 5432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 5442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 546118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 547118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, align_addr, offset, 0x21); 5482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(offset > 65536); 5502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 5522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align_addr += 4; 5532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman addr += offset; 5572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman len -= offset; 5582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(len > 65536); 5612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 562118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks /* tran, valid */ 563118cd17d4137f34c747c32765c1cb4d3910c04d4Ben Dooks sdhci_set_adma_desc(desc, addr, len, 0x21); 5642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman desc += 8; 5652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * If this triggers then we have a calculation bug 5682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * somewhere. :/ 5692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4); 5712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 57370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) { 57470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 57570764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Mark the last descriptor as the terminating descriptor 57670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 57770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham if (desc != host->adma_desc) { 57870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc -= 8; 57970764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham desc[0] |= 0x2; /* end */ 58070764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 58170764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } else { 58270764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* 58370764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham * Add a terminating entry. 58470764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham */ 5852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 58670764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham /* nop, end, valid */ 58770764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham sdhci_set_adma_desc(desc, 0, 0, 0x3); 58870764a905785ebacc8d44fed7a12fba3db267ae6Thomas Abraham } 5892134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5902134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 5912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Resync align buffer as we might have changed it. 5922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 5932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_WRITE) { 5942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_single_for_device(mmc_dev(host->mmc), 5952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_addr, 128 * 4, direction); 5962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 5972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 5982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_addr = dma_map_single(mmc_dev(host->mmc), 5992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE); 600980167b7fb20fb181766218b4771fc7420a7bbb4Pierre Ossman if (dma_mapping_error(mmc_dev(host->mmc), host->adma_addr)) 6018f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman goto unmap_entries; 6022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman BUG_ON(host->adma_addr & 0x3); 6038f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 6048f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return 0; 6058f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 6068f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_entries: 6078f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 6088f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg_len, direction); 6098f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanunmap_align: 6108f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 6118f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 128 * 4, direction); 6128f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossmanfail: 6138f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman return -EINVAL; 6142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 6152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossmanstatic void sdhci_adma_table_post(struct sdhci_host *host, 6172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct mmc_data *data) 6182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman{ 6192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int direction; 6202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 6222134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int i, size; 6232134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 *align; 6242134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman char *buffer; 6252134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman unsigned long flags; 6262134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6272134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) 6282134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_FROM_DEVICE; 6292134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 6302134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman direction = DMA_TO_DEVICE; 6312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->adma_addr, 6332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (128 * 2 + 1) * 4, DMA_TO_DEVICE); 6342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_single(mmc_dev(host->mmc), host->align_addr, 6362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 128 * 4, direction); 6372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6382134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (data->flags & MMC_DATA_READ) { 6392134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg, 6402134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6412134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6422134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align = host->align_buffer; 6432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, host->sg_count, i) { 6452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg_dma_address(sg) & 0x3) { 6462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman size = 4 - (sg_dma_address(sg) & 0x3); 6472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman buffer = sdhci_kmap_atomic(sg, &flags); 6496cefd05f35177ad5d22d44519c680cf43f2ac86dPierre Ossman WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3)); 6502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman memcpy(buffer, align, size); 6512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_kunmap_atomic(buffer, &flags); 6522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman align += 4; 6542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 6572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 6582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 6592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, direction); 6602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman} 6612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 662a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) 663d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 6641c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman u8 count; 665a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 6661c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman unsigned target_timeout, current_timeout; 667d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 668ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* 669ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * If the host controller provides us with an incorrect timeout 670ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * value, just skip the check and use 0xE. The hardware may take 671ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * longer to time out, but that's much better than having a too-short 672ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman * timeout value. 673ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman */ 67411a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) 675ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return 0xE; 676e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 677a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* Unspecified timeout, assume max */ 6781d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson if (!data && !cmd->busy_timeout) 679a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin return 0xE; 680d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 681a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin /* timeout in us */ 682a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 6831d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson target_timeout = cmd->busy_timeout * 1000; 68478a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko else { 68578a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout = data->timeout_ns / 1000; 68678a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko if (host->clock) 68778a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko target_timeout += data->timeout_clks / host->clock; 68878a2ca2727a9b992901c715bc881b6ddb4ec6a4eAndy Shevchenko } 68981b39802468fe4bf5c6b038837319b608acfdd3eAnton Vorontsov 6901c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman /* 6911c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * Figure out needed cycles. 6921c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * We do this in steps in order to fit inside a 32 bit int. 6931c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * The first step is the minimum timeout, which will have a 6941c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * minimum resolution of 6 bits: 6951c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) 2^13*1000 > 2^22, 6961c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (2) host->timeout_clk < 2^16 6971c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * => 6981c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman * (1) / (2) > 2^6 6991c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman */ 7001c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0; 7011c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout = (1 << 13) * 1000 / host->timeout_clk; 7021c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman while (current_timeout < target_timeout) { 7031c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count++; 7041c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman current_timeout <<= 1; 7051c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) 7061c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman break; 7071c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 7081c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 7091c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman if (count >= 0xF) { 71009eeff52bf20d485bcafc441f01c142c59c3da16Chris Ball DBG("%s: Too large timeout 0x%x requested for CMD%d!\n", 71109eeff52bf20d485bcafc441f01c142c59c3da16Chris Ball mmc_hostname(host->mmc), count, cmd->opcode); 7121c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman count = 0xE; 7131c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman } 7141c8cde92fa5c57daa9ff58d970ca6374f8d484a2Pierre Ossman 715ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return count; 716ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman} 717ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 7186aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsovstatic void sdhci_set_transfer_irqs(struct sdhci_host *host) 7196aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov{ 7206aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL; 7216aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR; 7226aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 7236aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov if (host->flags & SDHCI_REQ_USE_DMA) 7246aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, pio_irqs, dma_irqs); 7256aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov else 7266aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_clear_set_irqs(host, dma_irqs, pio_irqs); 7276aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov} 7286aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 729a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentinstatic void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) 730ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman{ 731ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman u8 count; 7322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman u8 ctrl; 733a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin struct mmc_data *data = cmd->data; 7348f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman int ret; 735ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 736ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman WARN_ON(host->data); 737ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 738a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (data || (cmd->flags & MMC_RSP_BUSY)) { 739a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin count = sdhci_calc_timeout(host, cmd); 740a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); 741a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin } 742a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin 743a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin if (!data) 744ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman return; 745ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 746ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman /* Sanity checks */ 747ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz * data->blocks > 524288); 748ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blksz > host->mmc->max_blk_size); 749ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman BUG_ON(data->blocks > 65535); 750ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 751ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data = data; 752ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman host->data_early = 0; 753f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = 0; 754ee53ab5d73998e502801c024a08de2c39a92c52aPierre Ossman 755a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) 756c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman host->flags |= SDHCI_REQ_USE_DMA; 757c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 7582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * FIXME: This doesn't account for merging when mapping the 7602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * scatterlist. 7612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 7622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 7692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 7712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) 7722134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 7732134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7742134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7752134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 7762134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 7772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->length & 0x3) { 7782134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 7792134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "transfer size (%d)\n", 7802134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sg->length); 7812134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 7822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 7832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7842134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 7852134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 786c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 787c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 788c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman /* 789c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * The assumption here being that alignment is the same after 790c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman * translation to device address space. 791c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman */ 7922134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 7932134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman int broken, i; 7942134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman struct scatterlist *sg; 7952134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 7962134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 0; 7972134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 7982134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 7992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * As we use 3 byte chunks to work around 8002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * alignment problems, we need to check this 8012134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * quirk. 8022134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 8032134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) 8042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 8052134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } else { 8062134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) 8072134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman broken = 1; 8082134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8092134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 8102134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (unlikely(broken)) { 8112134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman for_each_sg(data->sg, sg, data->sg_len, i) { 8122134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (sg->offset & 0x3) { 8132134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Reverting to PIO because of " 8142134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "bad alignment\n"); 8152134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8162134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman break; 8172134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8182134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8192134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8202134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 8212134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 8228f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 8238f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (host->flags & SDHCI_USE_ADMA) { 8248f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman ret = sdhci_adma_table_pre(host, data); 8258f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (ret) { 8268f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8278f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8288f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8298f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8308f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 831ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8328f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 8334e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, host->adma_addr, 8344e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_ADMA_ADDRESS); 8358f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8368f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 837c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler int sg_cnt; 8388f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 839c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler sg_cnt = dma_map_sg(mmc_dev(host->mmc), 8408f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman data->sg, data->sg_len, 8418f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman (data->flags & MMC_DATA_READ) ? 8428f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_FROM_DEVICE : 8438f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman DMA_TO_DEVICE); 844c8b3e02eb250ceb661437e9b198757eff0eb6fd2Tomas Winkler if (sg_cnt == 0) { 8458f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman /* 8468f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * This only happens when someone fed 8478f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman * us an invalid request. 8488f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman */ 8498f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman WARN_ON(1); 850ebd6d357848edb8709dd9bed4b93834d1b4d7044Pierre Ossman host->flags &= ~SDHCI_REQ_USE_DMA; 8518f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } else { 852719a61b452ff74cf81a96e4212748d9d63bcc924Pierre Ossman WARN_ON(sg_cnt != 1); 8534e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, sg_dma_address(data->sg), 8544e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_DMA_ADDRESS); 8558f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8568f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8578f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman } 8588f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman 8592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 8602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Always adjust the DMA selection as some controllers 8612134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (e.g. JMicron) can't do PIO properly when the selection 8622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * is ADMA. 8632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 8642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->version >= SDHCI_SPEC_200) { 8654e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 8662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl &= ~SDHCI_CTRL_DMA_MASK; 8672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->flags & SDHCI_REQ_USE_DMA) && 8682134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) 8692134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_ADMA32; 8702134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else 8712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman ctrl |= SDHCI_CTRL_SDMA; 8724e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 873c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman } 874c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman 8758f1934ce784bd8f2eaf06f190526500f7f3f9c74Pierre Ossman if (!(host->flags & SDHCI_REQ_USE_DMA)) { 876da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior int flags; 877da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior 878da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags = SG_MITER_ATOMIC; 879da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior if (host->data->flags & MMC_DATA_READ) 880da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 881da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior else 882da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 883da60a91d012bcb10bc5bcd86d585c4281742832cSebastian Andrzej Siewior sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); 8847659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->blocks = data->blocks; 885d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 886c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 8876aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov sdhci_set_transfer_irqs(host); 8886aa943ab8994fe6e4ccba22c5bc8150a84268bddAnton Vorontsov 889f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* Set the DMA boundary value and block size */ 890f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, 891f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni data->blksz), SDHCI_BLOCK_SIZE); 8924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); 893c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman} 894c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 895c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossmanstatic void sdhci_set_transfer_mode(struct sdhci_host *host, 896e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_command *cmd) 897c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman{ 898c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman u16 mode; 899e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin struct mmc_data *data = cmd->data; 900c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 9012b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng if (data == NULL) { 9022b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng /* clear Auto CMD settings for no data CMDs */ 9032b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng mode = sdhci_readw(host, SDHCI_TRANSFER_MODE); 9042b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng sdhci_writew(host, mode & ~(SDHCI_TRNS_AUTO_CMD12 | 9052b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng SDHCI_TRNS_AUTO_CMD23), SDHCI_TRANSFER_MODE); 906c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman return; 9072b558c13df82b2ede7a016f00bc9ebf534ddb301Dong Aisheng } 908c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 909e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman WARN_ON(!host->data); 910e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 911c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode = SDHCI_TRNS_BLK_CNT_EN; 912e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (mmc_op_multi(cmd->opcode) || data->blocks > 1) { 913e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_MULTI; 914e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 915e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * If we are sending CMD23, CMD12 never gets sent 916e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * on successful completion (so no Auto-CMD12). 917e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 918e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) 919e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD12; 9208edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) { 9218edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin mode |= SDHCI_TRNS_AUTO_CMD23; 9228edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin sdhci_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2); 9238edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 924c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 9258edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 926c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman if (data->flags & MMC_DATA_READ) 927c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_READ; 928c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) 929c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman mode |= SDHCI_TRNS_DMA; 930c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 9314e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, mode, SDHCI_TRANSFER_MODE); 932d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 933d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 934d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_data(struct sdhci_host *host) 935d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 936d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_data *data; 937d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 938d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(!host->data); 939d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 940d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman data = host->data; 941d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 942d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 943c9fddbc4f844f5a16b5957c61fe2cfcb5c12f990Pierre Ossman if (host->flags & SDHCI_REQ_USE_DMA) { 9442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 9452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman sdhci_adma_table_post(host, data); 9462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else { 9472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman dma_unmap_sg(mmc_dev(host->mmc), data->sg, 9482134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman data->sg_len, (data->flags & MMC_DATA_READ) ? 9492134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DMA_FROM_DEVICE : DMA_TO_DEVICE); 9502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 951d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 952d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 953d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 954c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * The specification states that the block count register must 955c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * be updated, but it does not specify at what point in the 956c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * data flow. That makes the register entirely useless to read 957c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * back so we have to assume that nothing made it to the card 958c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman * in the event of an error. 959d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 960c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman if (data->error) 961c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = 0; 962d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 963c9b74c5b8fb807187f6b1db09012828fcd2d7e73Pierre Ossman data->bytes_xfered = data->blksz * data->blocks; 964d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 965e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 966e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Need to send CMD12 if - 967e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * a) open-ended multiblock transfer (no CMD23) 968e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * b) error in multiblock transfer 969e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 970e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (data->stop && 971e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin (data->error || 972e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin !host->mrq->sbc)) { 973e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 974d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 975d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 976d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 977d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 97817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (data->error) { 979d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 980d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 981d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 982d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 983d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_send_command(host, data->stop); 984d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else 985d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 986d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 987d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 988c0e55129b09f3b9fee271e5fe23332393ab4c2a9Dong Aishengvoid sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 989d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 990d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int flags; 991fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman u32 mask; 9927cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 993d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 994d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->cmd); 995d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 996d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* Wait max 10 ms */ 9977cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout = 10; 998fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 999fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask = SDHCI_CMD_INHIBIT; 1000fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) 1001fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask |= SDHCI_DATA_INHIBIT; 1002fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 1003fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman /* We shouldn't wait for data inihibit for stop commands, even 1004fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman though they might use busy signaling */ 1005fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman if (host->mrq->data && (cmd == host->mrq->data->stop)) 1006fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman mask &= ~SDHCI_DATA_INHIBIT; 1007fd2208d7c72ef5995b730f1e23b082261499e334Pierre Ossman 10084e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { 10097cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1010a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Controller never released " 1011acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "inhibit bit(s).\n", mmc_hostname(host->mmc)); 1012d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 101317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EIO; 1014d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1015d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1016d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 10177cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 10187cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 10197cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1020d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10213e1a6892481034193b2502725f787465ebf39818Adrian Hunter timeout = jiffies; 10221d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson if (!cmd->data && cmd->busy_timeout > 9000) 10231d4d77444bf4212c44585146a2b353ca24c815f9Ulf Hansson timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ; 10243e1a6892481034193b2502725f787465ebf39818Adrian Hunter else 10253e1a6892481034193b2502725f787465ebf39818Adrian Hunter timeout += 10 * HZ; 10263e1a6892481034193b2502725f787465ebf39818Adrian Hunter mod_timer(&host->timer, timeout); 1027d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1028d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = cmd; 1029d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1030a3c7778f8153b9e4eceea6738973280b9e63c618Andrei Warkentin sdhci_prepare_data(host, cmd); 1031d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10324e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); 1033d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1034e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_set_transfer_mode(host, cmd); 1035c7fa9963ee6317b54e85b260791d603ea2feb8e3Pierre Ossman 1036d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { 1037a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Unsupported response type!\n", 1038d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 103917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman cmd->error = -EINVAL; 1040d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1041d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1042d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1043d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1044d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!(cmd->flags & MMC_RSP_PRESENT)) 1045d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_NONE; 1046d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_136) 1047d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_LONG; 1048d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else if (cmd->flags & MMC_RSP_BUSY) 1049d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT_BUSY; 1050d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1051d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags = SDHCI_CMD_RESP_SHORT; 1052d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1053d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_CRC) 1054d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_CRC; 1055d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (cmd->flags & MMC_RSP_OPCODE) 1056d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_INDEX; 1057b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1058b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 is special in that the Data Present Select should be set */ 1059069c9f142822d552ec885572945d8bce9eff0519Girish K S if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || 1060069c9f142822d552ec885572945d8bce9eff0519Girish K S cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) 1061d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman flags |= SDHCI_CMD_DATA; 1062d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 10634e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); 1064d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1065c0e55129b09f3b9fee271e5fe23332393ab4c2a9Dong AishengEXPORT_SYMBOL_GPL(sdhci_send_command); 1066d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1067d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_finish_command(struct sdhci_host *host) 1068d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1069d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman int i; 1070d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1071d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(host->cmd == NULL); 1072d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1073d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_PRESENT) { 1074d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd->flags & MMC_RSP_136) { 1075d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* CRC is stripped so we need to do some shifting. */ 1076d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman for (i = 0;i < 4;i++) { 10774e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[i] = sdhci_readl(host, 1078d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4) << 8; 1079d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (i != 3) 1080d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd->resp[i] |= 10814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_readb(host, 1082d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman SDHCI_RESPONSE + (3-i)*4-1); 1083d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1084d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 10854e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE); 1086d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1087d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1088d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 108917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = 0; 1090d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1091e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Finished CMD23, now send actual command. */ 1092e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->cmd == host->mrq->sbc) { 1093e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1094e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, host->mrq->cmd); 1095e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } else { 1096e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman 1097e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* Processed actual command. */ 1098e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->data && host->data_early) 1099e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_finish_data(host); 1100d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1101e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!host->cmd->data) 1102e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin tasklet_schedule(&host->finish_tasklet); 1103e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1104e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->cmd = NULL; 1105e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin } 1106d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1107d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 110852983382c74f59a3953e622d7661a24e1bc4388aKevin Liustatic u16 sdhci_get_preset_value(struct sdhci_host *host) 110952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu{ 111052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu u16 ctrl, preset = 0; 111152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 111252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 111352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 111452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu switch (ctrl & SDHCI_CTRL_UHS_MASK) { 111552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu case SDHCI_CTRL_UHS_SDR12: 111652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); 111752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 111852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu case SDHCI_CTRL_UHS_SDR25: 111952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR25); 112052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 112152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu case SDHCI_CTRL_UHS_SDR50: 112252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR50); 112352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 112452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu case SDHCI_CTRL_UHS_SDR104: 112552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104); 112652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 112752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu case SDHCI_CTRL_UHS_DDR50: 112852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50); 112952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 113052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu default: 113152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu pr_warn("%s: Invalid UHS-I mode selected\n", 113252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu mmc_hostname(host->mmc)); 113352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12); 113452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 113552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 113652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu return preset; 113752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu} 113852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 1139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) 1140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1141c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath int div = 0; /* Initialized for compiler warning */ 1142df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO int real_div = div, clk_mul = 1; 1143c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath u16 clk = 0; 11447cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman unsigned long timeout; 1145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 114630832ab56c80d96cfaf5a786524f0d8c57fadfa1Todd Poynor if (clock && clock == host->clock) 1147d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1149df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO host->mmc->actual_clock = 0; 1150df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO 11518114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->ops->set_clock) { 11528114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov host->ops->set_clock(host, clock); 11538114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) 11548114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov return; 11558114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov } 11568114634ccb54d67a8c01e5825d95bff4e7f7b357Anton Vorontsov 11574e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); 1158d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (clock == 0) 1160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 1161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 116285105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version >= SDHCI_SPEC_300) { 116352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (sdhci_readw(host, SDHCI_HOST_CONTROL2) & 116452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu SDHCI_CTRL_PRESET_VAL_ENABLE) { 116552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu u16 pre_val; 116652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 116752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 116852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu pre_val = sdhci_get_preset_value(host); 116952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu div = (pre_val & SDHCI_PRESET_SDCLK_FREQ_MASK) 117052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu >> SDHCI_PRESET_SDCLK_FREQ_SHIFT; 117152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (host->clk_mul && 117252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (pre_val & SDHCI_PRESET_CLKGEN_SEL_MASK)) { 117352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk = SDHCI_PROG_CLOCK_MODE; 117452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu real_div = div + 1; 117552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk_mul = host->clk_mul; 117652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } else { 117752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu real_div = max_t(int, 1, div << 1); 117852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 117952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu goto clock_set; 118052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 118152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 1182c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 1183c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Check if the Host Controller supports Programmable Clock 1184c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * Mode. 1185c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 1186c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 118752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu for (div = 1; div <= 1024; div++) { 118852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if ((host->max_clk * host->clk_mul / div) 118952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu <= clock) 119052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu break; 119152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 1192c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 119352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu * Set Programmable Clock Mode in the Clock 119452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu * Control register. 1195c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 119652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk = SDHCI_PROG_CLOCK_MODE; 119752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu real_div = div; 119852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu clk_mul = host->clk_mul; 119952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu div--; 1200c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else { 1201c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* Version 3.00 divisors must be a multiple of 2. */ 1202c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->max_clk <= clock) 1203c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div = 1; 1204c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else { 1205c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; 1206c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div += 2) { 1207c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if ((host->max_clk / div) <= clock) 1208c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath break; 1209c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } 121085105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1211df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1212c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 121385105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 121485105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } else { 121585105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao /* Version 2.00 divisors must be a power of 2. */ 12160397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) { 121785105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if ((host->max_clk / div) <= clock) 121885105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao break; 121985105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao } 1220df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO real_div = div; 1221c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath div >>= 1; 1222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 122452983382c74f59a3953e622d7661a24e1bc4388aKevin Liuclock_set: 1225df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO if (real_div) 1226df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; 1227df16219f365f7f5a2d88a6e123251d57255cca3fGiuseppe CAVALLARO 1228c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; 122985105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) 123085105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao << SDHCI_DIVIDER_HI_SHIFT; 1231d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_INT_EN; 12324e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1233d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 123427f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball /* Wait max 20 ms */ 123527f6cb160b71b342b7a47d28a4b6c422ea74ccd1Chris Ball timeout = 20; 12364e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) 12377cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman & SDHCI_CLOCK_INT_STABLE)) { 12387cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman if (timeout == 0) { 1239a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Internal clock never " 1240acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "stabilised.\n", mmc_hostname(host->mmc)); 1241d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 1242d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 1243d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 12447cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman timeout--; 12457cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman mdelay(1); 12467cb2c76fa2251474e42d55b75163c9d7ed11741ePierre Ossman } 1247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman clk |= SDHCI_CLOCK_CARD_EN; 12494e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1251d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 1252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->clock = clock; 1253d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 12558213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenkostatic inline void sdhci_update_clock(struct sdhci_host *host) 12568213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko{ 12578213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko unsigned int clock; 12588213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko 12598213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko clock = host->clock; 12608213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko host->clock = 0; 12618213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko sdhci_set_clock(host, clock); 12628213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko} 12638213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko 1264ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunterstatic int sdhci_set_power(struct sdhci_host *host, unsigned short power) 1265146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman{ 12668364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro u8 pwr = 0; 1267146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 12688364248a829d50495a796e7561aaf9a6976f846cGiuseppe Cavallaro if (power != (unsigned short)-1) { 1269ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman switch (1 << power) { 1270ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_165_195: 1271ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_180; 1272ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1273ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_29_30: 1274ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_30_31: 1275ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_300; 1276ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1277ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_32_33: 1278ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman case MMC_VDD_33_34: 1279ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr = SDHCI_POWER_330; 1280ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman break; 1281ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman default: 1282ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman BUG(); 1283ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1284ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman } 1285ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1286ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (host->pwr == pwr) 1287ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return -1; 1288146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1289ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman host->pwr = pwr; 1290ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman 1291ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman if (pwr == 0) { 12924e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1293f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) 1294f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter sdhci_runtime_pm_bus_off(host); 1295ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return 0; 12969e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt } 12979e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt 12989e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt /* 12999e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * Spec says that we should clear the power reg before setting 13009e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt * a new value. Some controllers don't seem to like this though. 13019e9dc5f29f2eb65153a15c4fdb12b4382e3a75b2Darren Salt */ 1302b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) 13034e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 1304146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1305e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon /* 1306c71f65129a1fb67bc6b9b8d03b493675b5c9302bAndres Salomon * At least the Marvell CaFe chip gets confused if we set the voltage 1307e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon * and set turn on power at the same time, so set the voltage first. 1308e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon */ 130911a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) 1310ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1311e08c1694d9e2138204f2b79b73f0f159074ce2f5Andres Salomon 1312ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman pwr |= SDHCI_POWER_ON; 1313146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1314ae628903ab6cc9a04fdf8d4ff3f0c5b2ffa6f939Pierre Ossman sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); 1315557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte 1316f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) 1317f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter sdhci_runtime_pm_bus_on(host); 1318f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter 1319557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte /* 1320557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * Some controllers need an extra 10ms delay of 10ms before they 1321557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte * can apply clock after applying power 1322557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte */ 132311a2f1b78a43d0c2bd026d79b952742c7588f529Pierre Ossman if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) 1324557b06971b1f05cbadec2f376a305ee1954e9b0dHarald Welte mdelay(10); 1325ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter 1326ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return power; 1327146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman} 1328146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 1329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 1330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1331d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * MMC callbacks * 1332d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 1333d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 1334d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1335d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) 1336d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1337d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 1338505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo int present; 1339d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1340473b095a72a95ba719905b1f2e82cd18d099a427Aaron Lu u32 tuning_opcode; 1341d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1342d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 1343d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 134466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 134566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 1346d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1347d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1348d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman WARN_ON(host->mrq != NULL); 1349d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1350f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 1351d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_activate_led(host); 13522f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 1353e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 1354e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin /* 1355e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * Ensure we don't send the STOP for non-SET_BLOCK_COUNTED 1356e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin * requests if Auto-CMD12 is enabled. 1357e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin */ 1358e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) { 1359c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang if (mrq->stop) { 1360c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->data->stop = NULL; 1361c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang mrq->stop = NULL; 1362c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1363c4512f79dcb236c8dc2afae176a0dc520096f0bcJerry Huang } 1364d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = mrq; 1366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1367505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo /* 1368505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * Firstly check card presence from cd-gpio. The return could 1369505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * be one of the following possibilities: 1370505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * negative: cd-gpio is not available 1371505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * zero: cd-gpio is used, and card is removed 1372505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo * one: cd-gpio is used, and card is present 1373505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo */ 1374505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = mmc_gpio_get_cd(host->mmc); 1375505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo if (present < 0) { 1376505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo /* If polling, assume that the card is always present. */ 1377505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 1378505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = 1; 1379505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo else 1380505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 1381505a8680b78f580245cfb83f37971c7b62bcf991Shawn Guo SDHCI_CARD_PRESENT; 1382bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski } 1383bec9d4e5939987053169a9bb48fc58b6a2d3e237Guennadi Liakhovetski 138468d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov if (!present || host->flags & SDHCI_DEVICE_DEAD) { 138517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 1386d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 1387cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } else { 1388cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath u32 present_state; 1389cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 1390cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 1391cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 1392cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * Check if the re-tuning timer has already expired and there 1393cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * is no on-going data transfer. If so, we need to execute 1394cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * tuning procedure before sending command. 1395cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 1396cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if ((host->flags & SDHCI_NEEDS_RETUNING) && 1397cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { 139814efd957209461bbdf285bf0d67e931955d04a4cChris Ball if (mmc->card) { 139914efd957209461bbdf285bf0d67e931955d04a4cChris Ball /* eMMC uses cmd21 but sd and sdio use cmd19 */ 140014efd957209461bbdf285bf0d67e931955d04a4cChris Ball tuning_opcode = 140114efd957209461bbdf285bf0d67e931955d04a4cChris Ball mmc->card->type == MMC_TYPE_MMC ? 140214efd957209461bbdf285bf0d67e931955d04a4cChris Ball MMC_SEND_TUNING_BLOCK_HS200 : 140314efd957209461bbdf285bf0d67e931955d04a4cChris Ball MMC_SEND_TUNING_BLOCK; 140463c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu 140563c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu /* Here we need to set the host->mrq to NULL, 140663c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu * in case the pending finish_tasklet 140763c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu * finishes it incorrectly. 140863c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu */ 140963c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu host->mrq = NULL; 141063c211803a272d59dcb11af82ad0364b3d1d2a2eChuansheng Liu 141114efd957209461bbdf285bf0d67e931955d04a4cChris Ball spin_unlock_irqrestore(&host->lock, flags); 141214efd957209461bbdf285bf0d67e931955d04a4cChris Ball sdhci_execute_tuning(mmc, tuning_opcode); 141314efd957209461bbdf285bf0d67e931955d04a4cChris Ball spin_lock_irqsave(&host->lock, flags); 141414efd957209461bbdf285bf0d67e931955d04a4cChris Ball 141514efd957209461bbdf285bf0d67e931955d04a4cChris Ball /* Restore original mmc_request structure */ 141614efd957209461bbdf285bf0d67e931955d04a4cChris Ball host->mrq = mrq; 141714efd957209461bbdf285bf0d67e931955d04a4cChris Ball } 1418cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1419cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 14208edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) 1421e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->sbc); 1422e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin else 1423e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin sdhci_send_command(host, mrq->cmd); 1424cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 1425d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 14265f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1427d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1428d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1429d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 143066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) 1431d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 1433ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter int vdd_bit = -1; 1434d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman u8 ctrl; 1435d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1436d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1437d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1438ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->flags & SDHCI_DEVICE_DEAD) { 1439ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 1440ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->vmmc && ios->power_mode == MMC_POWER_OFF) 1441ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter mmc_regulator_set_ocr(host->mmc, host->vmmc, 0); 1442ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter return; 1443ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter } 14441e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1445d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 1446d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Reset the chip on each power off. 1447d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Should clear out any weird states. 1448d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 1449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) { 14504e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); 14517260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_reinit(host); 1452d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 1453d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 145452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (host->version >= SDHCI_SPEC_300 && 1455372c463487c6af8275d216f4b259dda6343a33a5Dong Aisheng (ios->power_mode == MMC_POWER_UP) && 1456372c463487c6af8275d216f4b259dda6343a33a5Dong Aisheng !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) 145752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu sdhci_enable_preset_value(host, false); 145852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 1459d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_set_clock(host, ios->clock); 1460d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1461d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (ios->power_mode == MMC_POWER_OFF) 1462ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter vdd_bit = sdhci_set_power(host, -1); 1463d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 1464ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter vdd_bit = sdhci_set_power(host, ios->vdd); 1465ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter 1466ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter if (host->vmmc && vdd_bit != -1) { 1467ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 1468ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd_bit); 1469ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter spin_lock_irqsave(&host->lock, flags); 1470ceb6143b2df81c8a554bd5de898087926568cc51Adrian Hunter } 1471d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1472643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity if (host->ops->platform_send_init_74_clocks) 1473643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity host->ops->platform_send_init_74_clocks(host, ios->power_mode); 1474643a81ff3c5a89ae5c0768f89b29d3e1d08be5c3Philip Rakity 147515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 147615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * If your platform has 8-bit width support but is not a v3 controller, 147715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * or if it requires special setup code, you should implement that in 14787bc088d38f92f58df97e1cd9a8430331ee5491bbSascha Hauer * platform_bus_width(). 147915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 14807bc088d38f92f58df97e1cd9a8430331ee5491bbSascha Hauer if (host->ops->platform_bus_width) { 14817bc088d38f92f58df97e1cd9a8430331ee5491bbSascha Hauer host->ops->platform_bus_width(host, ios->bus_width); 14827bc088d38f92f58df97e1cd9a8430331ee5491bbSascha Hauer } else { 148315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 148415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (ios->bus_width == MMC_BUS_WIDTH_8) { 148515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_4BITBUS; 148615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->version >= SDHCI_SPEC_300) 148715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl |= SDHCI_CTRL_8BITBUS; 148815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } else { 148915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (host->version >= SDHCI_SPEC_300) 149015ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_8BITBUS; 149115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity if (ios->bus_width == MMC_BUS_WIDTH_4) 149215ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl |= SDHCI_CTRL_4BITBUS; 149315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity else 149415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl &= ~SDHCI_CTRL_4BITBUS; 149515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } 149615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 149715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity } 1498ae6d6c92212e94b12ab9365c23fb73acc2c3c2e7Kyungmin Park 149915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); 1500cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 15013ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity if ((ios->timing == MMC_TIMING_SD_HS || 15023ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity ios->timing == MMC_TIMING_MMC_HS) 15033ab9c8dad6444007700b5949ec80cfdc823d31b4Philip Rakity && !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) 1504cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl |= SDHCI_CTRL_HISPD; 1505cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman else 1506cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman ctrl &= ~SDHCI_CTRL_HISPD; 1507cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 1508d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (host->version >= SDHCI_SPEC_300) { 150949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath u16 clk, ctrl_2; 151049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 151149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* In case of UHS-I modes, set High Speed Enable */ 1512069c9f142822d552ec885572945d8bce9eff0519Girish K S if ((ios->timing == MMC_TIMING_MMC_HS200) || 1513bb8175a8aa42d731a840cd474e348ac3367eb5a0Seungwon Jeon (ios->timing == MMC_TIMING_MMC_DDR52) || 1514069c9f142822d552ec885572945d8bce9eff0519Girish K S (ios->timing == MMC_TIMING_UHS_SDR50) || 151549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_SDR104) || 151649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (ios->timing == MMC_TIMING_UHS_DDR50) || 1517dd8df17fe83483d7ea06ff229895e35a42071599Alexander Elbs (ios->timing == MMC_TIMING_UHS_SDR25)) 151849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath ctrl |= SDHCI_CTRL_HISPD; 1519d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1520d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1521d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(ctrl_2 & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 1522758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1523d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1524d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * We only need to set Driver Strength if the 1525d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * preset value enable is not set. 1526d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1527d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK; 1528d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (ios->drv_type == MMC_SET_DRIVER_TYPE_A) 1529d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A; 1530d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C) 1531d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C; 1532d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1533d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 1534758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else { 1535758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* 1536758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * According to SDHC Spec v3.00, if the Preset Value 1537758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Enable in the Host Control 2 register is set, we 1538758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * need to reset SD Clock Enable before changing High 1539758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath * Speed Enable to avoid generating clock gliches. 1540758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath */ 1541758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1542758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Reset SD Clock Enable */ 1543758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 1544758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 1545758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 1546758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1547758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1548758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath 1549758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath /* Re-enable SD Clock */ 15508213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko sdhci_update_clock(host); 1551d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 155249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 155349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 155449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Reset SD Clock Enable */ 155549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); 155649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath clk &= ~SDHCI_CLOCK_CARD_EN; 155749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); 155849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 15596322cdd0eb22e016aeced886c2046d115139c962Philip Rakity if (host->ops->set_uhs_signaling) 15606322cdd0eb22e016aeced886c2046d115139c962Philip Rakity host->ops->set_uhs_signaling(host, ios->timing); 15616322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else { 15626322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); 15636322cdd0eb22e016aeced886c2046d115139c962Philip Rakity /* Select Bus Speed Mode for host */ 15646322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; 1565599115686d8f62999a871f7d7ee87de3b939b258Giuseppe CAVALLARO if ((ios->timing == MMC_TIMING_MMC_HS200) || 1566599115686d8f62999a871f7d7ee87de3b939b258Giuseppe CAVALLARO (ios->timing == MMC_TIMING_UHS_SDR104)) 1567599115686d8f62999a871f7d7ee87de3b939b258Giuseppe CAVALLARO ctrl_2 |= SDHCI_CTRL_UHS_SDR104; 1568069c9f142822d552ec885572945d8bce9eff0519Girish K S else if (ios->timing == MMC_TIMING_UHS_SDR12) 15696322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR12; 15706322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR25) 15716322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR25; 15726322cdd0eb22e016aeced886c2046d115139c962Philip Rakity else if (ios->timing == MMC_TIMING_UHS_SDR50) 15736322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_SDR50; 1574bb8175a8aa42d731a840cd474e348ac3367eb5a0Seungwon Jeon else if ((ios->timing == MMC_TIMING_UHS_DDR50) || 1575bb8175a8aa42d731a840cd474e348ac3367eb5a0Seungwon Jeon (ios->timing == MMC_TIMING_MMC_DDR52)) 15766322cdd0eb22e016aeced886c2046d115139c962Philip Rakity ctrl_2 |= SDHCI_CTRL_UHS_DDR50; 15776322cdd0eb22e016aeced886c2046d115139c962Philip Rakity sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); 15786322cdd0eb22e016aeced886c2046d115139c962Philip Rakity } 157949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 158052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) && 158152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu ((ios->timing == MMC_TIMING_UHS_SDR12) || 158252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_SDR25) || 158352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_SDR50) || 158452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_SDR104) || 158552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu (ios->timing == MMC_TIMING_UHS_DDR50))) { 158652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu u16 preset; 158752983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 158852983382c74f59a3953e622d7661a24e1bc4388aKevin Liu sdhci_enable_preset_value(host, true); 158952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu preset = sdhci_get_preset_value(host); 159052983382c74f59a3953e622d7661a24e1bc4388aKevin Liu ios->drv_type = (preset & SDHCI_PRESET_DRV_MASK) 159152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu >> SDHCI_PRESET_DRV_SHIFT; 159252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 159352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 159449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Re-enable SD Clock */ 15958213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko sdhci_update_clock(host); 1596758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath } else 1597758535c4e3cdd2b5b09565d9651aaa541aac3de8Arindam Nath sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); 1598d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1599b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo /* 1600b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * Some (ENE) controllers go apeshit on some ios operation, 1601b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * signalling timeout and CRC errors even on CMD0. Resetting 1602b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo * it on each ios seems to solve the problem. 1603b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo */ 1604b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) 1605b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 1606b8352260d28b30cb2bb2df99814fb9c360e38901Leandro Dorileo 16075f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 1608d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1609d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1610d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 161166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 161266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 161366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 161466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 161566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 161666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, ios); 161766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 161866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 161966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 162094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liustatic int sdhci_do_get_cd(struct sdhci_host *host) 162194144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu{ 162294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu int gpio_cd = mmc_gpio_get_cd(host->mmc); 162394144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 162494144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu if (host->flags & SDHCI_DEVICE_DEAD) 162594144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return 0; 162694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 162794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu /* If polling/nonremovable, assume that the card is always present. */ 162894144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || 162994144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu (host->mmc->caps & MMC_CAP_NONREMOVABLE)) 163094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return 1; 163194144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 163294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu /* Try slot gpio detect */ 163394144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu if (!IS_ERR_VALUE(gpio_cd)) 163494144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return !!gpio_cd; 163594144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 163694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu /* Host native card detect */ 163794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); 163894144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu} 163994144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 164094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liustatic int sdhci_get_cd(struct mmc_host *mmc) 164194144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu{ 164294144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu struct sdhci_host *host = mmc_priv(mmc); 164394144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu int ret; 164494144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 164594144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu sdhci_runtime_pm_get(host); 164694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu ret = sdhci_do_get_cd(host); 164794144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu sdhci_runtime_pm_put(host); 164894144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu return ret; 164994144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu} 165094144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu 165166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_check_ro(struct sdhci_host *host) 1652d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 1653d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 16542dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang int is_readonly; 1655d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1656d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 1657d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16581e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 16592dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = 0; 16602dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang else if (host->ops->get_ro) 16612dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = host->ops->get_ro(host); 16621e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman else 16632dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE) 16642dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang & SDHCI_WRITE_PROTECT); 1665d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 1666d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1667d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 16682dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang /* This quirk needs to be replaced by a callback-function later */ 16692dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ? 16702dfb579c7da171f6153cd58e8fbf7dcfe684778dWolfram Sang !is_readonly : is_readonly; 1671d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 1672d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 167382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai#define SAMPLE_COUNT 5 167482b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 167566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_do_get_ro(struct sdhci_host *host) 167682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai{ 167782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai int i, ro_count; 167882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 167982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT)) 168066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return sdhci_check_ro(host); 168182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 168282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai ro_count = 0; 168382b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai for (i = 0; i < SAMPLE_COUNT; i++) { 168466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (sdhci_check_ro(host)) { 168582b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai if (++ro_count > SAMPLE_COUNT / 2) 168682b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 1; 168782b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 168882b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai msleep(30); 168982b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai } 169082b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai return 0; 169182b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai} 169282b0e23a295cc58d1290017ee97a40956ad68d94Takashi Iwai 169320758b66dce76af0527363186f44b464d83e5666Adrian Hunterstatic void sdhci_hw_reset(struct mmc_host *mmc) 169420758b66dce76af0527363186f44b464d83e5666Adrian Hunter{ 169520758b66dce76af0527363186f44b464d83e5666Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 169620758b66dce76af0527363186f44b464d83e5666Adrian Hunter 169720758b66dce76af0527363186f44b464d83e5666Adrian Hunter if (host->ops && host->ops->hw_reset) 169820758b66dce76af0527363186f44b464d83e5666Adrian Hunter host->ops->hw_reset(host); 169920758b66dce76af0527363186f44b464d83e5666Adrian Hunter} 170020758b66dce76af0527363186f44b464d83e5666Adrian Hunter 170166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_get_ro(struct mmc_host *mmc) 1702f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman{ 170366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 170466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret; 1705f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 170666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 170766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter ret = sdhci_do_get_ro(host); 170866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 170966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 171066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 1711f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 171266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable) 171366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 17141e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->flags & SDHCI_DEVICE_DEAD) 17151e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman goto out; 17161e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 1717f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (enable) 171866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_SDIO_IRQ_ENABLED; 171966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter else 172066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_SDIO_IRQ_ENABLED; 172166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 172266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* SDIO IRQ will be enabled as appropriate in runtime resume */ 172366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) 172466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter goto out; 172566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 172666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (enable) 17277260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT); 17287260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov else 17297260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_mask_irqs(host, SDHCI_INT_CARD_INT); 17301e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanout: 1731f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmiowb(); 173266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 173366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 173466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) 173566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 173666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 173766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 1738f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 173966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 174066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, enable); 1741f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 1742f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman} 1743f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 174420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liustatic int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, 174521f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam struct mmc_ios *ios) 1746f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath{ 174720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu u16 ctrl; 17486231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity int ret; 1749f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 175020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* 175120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu * Signal Voltage Switching is only applicable for Host Controllers 175220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu * v3.00 and above. 175320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu */ 175420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (host->version < SDHCI_SPEC_300) 175520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return 0; 17566231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 1757f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1758f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 175921f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam switch (ios->signal_voltage) { 176020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu case MMC_SIGNAL_VOLTAGE_330: 176120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Set 1.8V Signal Enable in the Host Control2 register to 0 */ 176220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl &= ~SDHCI_CTRL_VDD_180; 176320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1764f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 176520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (host->vqmmc) { 176620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ret = regulator_set_voltage(host->vqmmc, 2700000, 3600000); 176720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ret) { 176820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu pr_warning("%s: Switching to 3.3V signalling voltage " 176920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu " failed\n", mmc_hostname(host->mmc)); 177020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EIO; 177120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 177220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 177320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Wait for 5ms */ 177420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu usleep_range(5000, 5500); 1775f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 177620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* 3.3V regulator output should be stable within 5 ms */ 177720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 177820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (!(ctrl & SDHCI_CTRL_VDD_180)) 177920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return 0; 17806231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 178120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu pr_warning("%s: 3.3V regulator output did not became stable\n", 178220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu mmc_hostname(host->mmc)); 178320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 178420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EAGAIN; 178520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu case MMC_SIGNAL_VOLTAGE_180: 178620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (host->vqmmc) { 178720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ret = regulator_set_voltage(host->vqmmc, 178820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 1700000, 1950000); 178920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ret) { 179020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu pr_warning("%s: Switching to 1.8V signalling voltage " 179120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu " failed\n", mmc_hostname(host->mmc)); 179220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EIO; 179320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 179420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 17956231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 17966231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* 17976231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * Enable 1.8V Signal Enable in the Host Control2 17986231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity * register 17996231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity */ 180020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl |= SDHCI_CTRL_VDD_180; 180120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 18026231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 180320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Wait for 5ms */ 180420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu usleep_range(5000, 5500); 1805f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 180620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* 1.8V regulator output should be stable within 5 ms */ 180720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 180820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ctrl & SDHCI_CTRL_VDD_180) 180920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return 0; 1810f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 181120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu pr_warning("%s: 1.8V regulator output did not became stable\n", 181220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu mmc_hostname(host->mmc)); 1813f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 181420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EAGAIN; 181520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu case MMC_SIGNAL_VOLTAGE_120: 181620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (host->vqmmc) { 181720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu ret = regulator_set_voltage(host->vqmmc, 1100000, 1300000); 181820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu if (ret) { 181920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu pr_warning("%s: Switching to 1.2V signalling voltage " 182020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu " failed\n", mmc_hostname(host->mmc)); 182120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return -EIO; 1822f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 1823f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 18246231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity return 0; 182520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu default: 1826f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* No signal voltage switch required */ 1827f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return 0; 182820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu } 1829f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath} 1830f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 183166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, 183221f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam struct mmc_ios *ios) 183366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 183466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = mmc_priv(mmc); 183566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int err; 183666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 183766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->version < SDHCI_SPEC_300) 183866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return 0; 183966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 184021f5998f10a4d10dce48e9831ab2deb7e8f1a1faFabio Estevam err = sdhci_do_start_signal_voltage_switch(host, ios); 184166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 184266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return err; 184366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 184466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 184520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liustatic int sdhci_card_busy(struct mmc_host *mmc) 184620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu{ 184720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu struct sdhci_host *host = mmc_priv(mmc); 184820b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu u32 present_state; 184920b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 185020b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_runtime_pm_get(host); 185120b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu /* Check whether DAT[3:0] is 0000 */ 185220b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); 185320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu sdhci_runtime_pm_put(host); 185420b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 185520b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu return !(present_state & SDHCI_DATA_LVL_MASK); 185620b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu} 185720b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu 1858069c9f142822d552ec885572945d8bce9eff0519Girish K Sstatic int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) 1859b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath{ 1860b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct sdhci_host *host; 1861b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u16 ctrl; 1862b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath u32 ier; 1863b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int tuning_loop_counter = MAX_TUNING_LOOP; 1864b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath unsigned long timeout; 1865b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath int err = 0; 1866069c9f142822d552ec885572945d8bce9eff0519Girish K S bool requires_tuning_nonuhs = false; 18672b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong unsigned long flags; 1868b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1869b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host = mmc_priv(mmc); 1870b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 187166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_get(host); 18722b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_lock_irqsave(&host->lock, flags); 1873b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1874b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1875b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1876b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1877069c9f142822d552ec885572945d8bce9eff0519Girish K S * The Host Controller needs tuning only in case of SDR104 mode 1878069c9f142822d552ec885572945d8bce9eff0519Girish K S * and for SDR50 mode when Use Tuning for SDR50 is set in the 1879b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Capabilities register. 1880069c9f142822d552ec885572945d8bce9eff0519Girish K S * If the Host Controller supports the HS200 mode then the 1881069c9f142822d552ec885572945d8bce9eff0519Girish K S * tuning function has to be executed. 1882b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1883069c9f142822d552ec885572945d8bce9eff0519Girish K S if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && 1884069c9f142822d552ec885572945d8bce9eff0519Girish K S (host->flags & SDHCI_SDR50_NEEDS_TUNING || 1885156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO host->flags & SDHCI_SDR104_NEEDS_TUNING)) 1886069c9f142822d552ec885572945d8bce9eff0519Girish K S requires_tuning_nonuhs = true; 1887069c9f142822d552ec885572945d8bce9eff0519Girish K S 1888b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) || 1889069c9f142822d552ec885572945d8bce9eff0519Girish K S requires_tuning_nonuhs) 1890b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl |= SDHCI_CTRL_EXEC_TUNING; 1891b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath else { 18922b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 189366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 1894b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return 0; 1895b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1896b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 18974525181245c0f4005788c17315aee4371662ddeaDong Aisheng if (host->ops->platform_execute_tuning) { 18982b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 18994525181245c0f4005788c17315aee4371662ddeaDong Aisheng err = host->ops->platform_execute_tuning(host, opcode); 19004525181245c0f4005788c17315aee4371662ddeaDong Aisheng sdhci_runtime_pm_put(host); 19014525181245c0f4005788c17315aee4371662ddeaDong Aisheng return err; 19024525181245c0f4005788c17315aee4371662ddeaDong Aisheng } 19034525181245c0f4005788c17315aee4371662ddeaDong Aisheng 1904b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1905b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1906b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1907b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * As per the Host Controller spec v3.00, tuning command 1908b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * generates Buffer Read Ready interrupt, so enable that. 1909b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * 1910b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Note: The spec clearly says that when tuning sequence 1911b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * is being performed, the controller does not generate 1912b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * interrupts other than Buffer Read Ready interrupt. But 1913b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to make sure we don't hit a controller bug, we _only_ 1914b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * enable Buffer Read Ready interrupt here. 1915b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1916b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ier = sdhci_readl(host, SDHCI_INT_ENABLE); 1917b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_clear_set_irqs(host, ier, SDHCI_INT_DATA_AVAIL); 1918b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1919b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1920b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number 1921b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * of loops reaches 40 times or a timeout of 150ms occurs. 1922b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1923b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath timeout = 150; 1924b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath do { 1925b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath struct mmc_command cmd = {0}; 192666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct mmc_request mrq = {NULL}; 1927b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1928b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!tuning_loop_counter && !timeout) 1929b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath break; 1930b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1931069c9f142822d552ec885572945d8bce9eff0519Girish K S cmd.opcode = opcode; 1932b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.arg = 0; 1933b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1934b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.retries = 0; 1935b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.data = NULL; 1936b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath cmd.error = 0; 1937b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1938b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath mrq.cmd = &cmd; 1939b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = &mrq; 1940b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1941b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1942b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * In response to CMD19, the card sends 64 bytes of tuning 1943b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * block to the Host Controller. So we set the block size 1944b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * to 64 here. 1945b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1946069c9f142822d552ec885572945d8bce9eff0519Girish K S if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200) { 1947069c9f142822d552ec885572945d8bce9eff0519Girish K S if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) 1948069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128), 1949069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1950069c9f142822d552ec885572945d8bce9eff0519Girish K S else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) 1951069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), 1952069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1953069c9f142822d552ec885572945d8bce9eff0519Girish K S } else { 1954069c9f142822d552ec885572945d8bce9eff0519Girish K S sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), 1955069c9f142822d552ec885572945d8bce9eff0519Girish K S SDHCI_BLOCK_SIZE); 1956069c9f142822d552ec885572945d8bce9eff0519Girish K S } 1957b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1958b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 1959b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The tuning block is sent by the card to the host controller. 1960b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * So we set the TRNS_READ bit in the Transfer Mode register. 1961b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * This also takes care of setting DMA Enable and Multi Block 1962b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * Select in the same register to 0. 1963b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 1964b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); 1965b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1966b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_send_command(host, &cmd); 1967b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1968b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->cmd = NULL; 1969b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->mrq = NULL; 1970b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 19712b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 1972b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* Wait for Buffer Read Ready interrupt */ 1973b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wait_event_interruptible_timeout(host->buf_ready_int, 1974b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath (host->tuning_done == 1), 1975b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath msecs_to_jiffies(50)); 19762b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_lock_irqsave(&host->lock, flags); 1977b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1978b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!host->tuning_done) { 1979a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Timeout waiting for " 1980b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "Buffer Read Ready interrupt during tuning " 1981b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "procedure, falling back to fixed sampling " 1982b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath "clock\n"); 1983b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1984b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 1985b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_EXEC_TUNING; 1986b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 1987b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1988b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 1989b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 1990b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 1991b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1992b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 0; 1993b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 1994b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1995b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath tuning_loop_counter--; 1996b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath timeout--; 1997197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders 1998197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders /* eMMC spec does not require a delay between tuning cycles */ 1999197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders if (opcode == MMC_SEND_TUNING_BLOCK) 2000197160d52e859575ff0ad1afd674ab2a825b9f83Nick Sanders mdelay(1); 2001b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } while (ctrl & SDHCI_CTRL_EXEC_TUNING); 2002b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2003b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* 2004b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * The Host Driver has exhausted the maximum number of loops allowed, 2005b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath * so use fixed sampling frequency. 2006b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath */ 2007b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!tuning_loop_counter || !timeout) { 2008b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath ctrl &= ~SDHCI_CTRL_TUNED_CLK; 2009b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 2010114f2bf6a158cd84c1a7280cf6233904c8bce430Dong Aisheng err = -EIO; 2011b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } else { 2012b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) { 2013a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Tuning procedure" 2014b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath " failed, falling back to fixed sampling" 2015b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath " clock\n"); 2016b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = -EIO; 2017b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2018b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2019b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2020b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nathout: 2021cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 2022cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * If this is the very first time we are here, we start the retuning 2023cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * timer. Since only during the first time, SDHCI_NEEDS_RETUNING 2024cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * flag won't be set, we check this condition before actually starting 2025cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * the timer. 2026cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 2027cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count && 2028cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath (host->tuning_mode == SDHCI_TUNING_MODE_1)) { 2029973905feab85416784f36cc94b868392fd465ef4Aaron Lu host->flags |= SDHCI_USING_RETUNING_TIMER; 2030cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mod_timer(&host->tuning_timer, jiffies + 2031cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count * HZ); 2032cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Tuning mode 1 limits the maximum data length to 4MB */ 2033cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath mmc->max_blk_count = (4 * 1024 * 1024) / mmc->max_blk_size; 20342bc024855e881c697fc9bf9799f377c392192a43Arend van Spriel } else if (host->flags & SDHCI_USING_RETUNING_TIMER) { 2035cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 2036cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Reload the new initial value for timer */ 20372bc024855e881c697fc9bf9799f377c392192a43Arend van Spriel mod_timer(&host->tuning_timer, jiffies + 20382bc024855e881c697fc9bf9799f377c392192a43Arend van Spriel host->tuning_count * HZ); 2039cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2040cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2041cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 2042cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case tuning fails, host controllers which support re-tuning can 2043cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * try tuning again at a later time, when the re-tuning timer expires. 2044cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * So for these controllers, we return 0. Since there might be other 2045cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * controllers who do not have this capability, we return error for 2046973905feab85416784f36cc94b868392fd465ef4Aaron Lu * them. SDHCI_USING_RETUNING_TIMER means the host is currently using 2047973905feab85416784f36cc94b868392fd465ef4Aaron Lu * a retuning timer to do the retuning for the card. 2048cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 2049973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (err && (host->flags & SDHCI_USING_RETUNING_TIMER)) 2050cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath err = 0; 2051cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2052b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath sdhci_clear_set_irqs(host, SDHCI_INT_DATA_AVAIL, ier); 20532b35bd83467df6f8284b9148d6f768148c3a5e5fAisheng Dong spin_unlock_irqrestore(&host->lock, flags); 205466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 2055b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2056b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return err; 2057b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath} 2058b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 205952983382c74f59a3953e622d7661a24e1bc4388aKevin Liu 206052983382c74f59a3953e622d7661a24e1bc4388aKevin Liustatic void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) 20614d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath{ 20624d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath u16 ctrl; 20634d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 20644d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* Host Controller v3.00 defines preset value registers */ 20654d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->version < SDHCI_SPEC_300) 20664d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath return; 20674d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 20684d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); 20694d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 20704d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* 20714d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * We only enable or disable Preset Value if they are not already 20724d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * enabled or disabled respectively. Otherwise, we bail out. 20734d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath */ 20744d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (enable && !(ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 20754d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl |= SDHCI_CTRL_PRESET_VAL_ENABLE; 20764d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 207766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_PV_ENABLED; 20784d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } else if (!enable && (ctrl & SDHCI_CTRL_PRESET_VAL_ENABLE)) { 20794d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath ctrl &= ~SDHCI_CTRL_PRESET_VAL_ENABLE; 20804d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); 208166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_PV_ENABLED; 20824d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath } 208366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 208466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 208571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic void sdhci_card_event(struct mmc_host *mmc) 2086d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 208771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski struct sdhci_host *host = mmc_priv(mmc); 2088d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2089d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2090722e1280c932dd42c474390482429ce12aff9031Christian Daudt /* First check if client has provided their own card event */ 2091722e1280c932dd42c474390482429ce12aff9031Christian Daudt if (host->ops->card_event) 2092722e1280c932dd42c474390482429ce12aff9031Christian Daudt host->ops->card_event(host); 2093722e1280c932dd42c474390482429ce12aff9031Christian Daudt 2094d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2095d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 209666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Check host->mrq first in case we are runtime suspended */ 20979668d765eab78d58e656177db2acb57c249b9c01Shawn Guo if (host->mrq && !sdhci_do_get_cd(host)) { 2098a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Card removed during transfer!\n", 209966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 2100a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Resetting controller.\n", 210166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter mmc_hostname(host->mmc)); 2102d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 210366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_reset(host, SDHCI_RESET_CMD); 210466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_reset(host, SDHCI_RESET_DATA); 2105d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 210666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->mrq->cmd->error = -ENOMEDIUM; 210766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter tasklet_schedule(&host->finish_tasklet); 2108d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2109d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2110d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 211171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski} 211271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 211371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic const struct mmc_host_ops sdhci_ops = { 211471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .request = sdhci_request, 211571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .set_ios = sdhci_set_ios, 211694144a465dd0b34b3249f988a09472d0f57ad2b7Kevin Liu .get_cd = sdhci_get_cd, 211771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .get_ro = sdhci_get_ro, 211871e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .hw_reset = sdhci_hw_reset, 211971e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .enable_sdio_irq = sdhci_enable_sdio_irq, 212071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, 212171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .execute_tuning = sdhci_execute_tuning, 212271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski .card_event = sdhci_card_event, 212320b92a30b5610a5222060417961bc4ccb42ea5a5Kevin Liu .card_busy = sdhci_card_busy, 212471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski}; 212571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 212671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski/*****************************************************************************\ 212771e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * * 212871e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * Tasklets * 212971e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski * * 213071e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski\*****************************************************************************/ 213171e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 213271e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetskistatic void sdhci_tasklet_card(unsigned long param) 213371e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski{ 213471e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski struct sdhci_host *host = (struct sdhci_host*)param; 213571e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski 213671e69211eac889898dec5a21270347591eb2d001Guennadi Liakhovetski sdhci_card_event(host->mmc); 2137d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 213804cf585d2902404ed06861c6dc27897100340dbaPierre Ossman mmc_detect_change(host->mmc, msecs_to_jiffies(200)); 2139d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2140d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2141d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_tasklet_finish(unsigned long param) 2142d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2143d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2144d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2145d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_request *mrq; 2146d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2147d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)param; 2148d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 214966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 215066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 21510c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball /* 21520c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * If this tasklet gets rescheduled while running, it will 21530c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball * be run again afterwards but without any active request. 21540c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball */ 215566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (!host->mrq) { 215666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 21570c9c99a765321104cc5f9c97f949382a9ba4927eChris Ball return; 215866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 2159d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2160d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer(&host->timer); 2161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mrq = host->mrq; 2163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2164d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2165d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * The controller needs a reset of internal state machines 2166d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * upon error conditions. 2167d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 21681e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!(host->flags & SDHCI_DEVICE_DEAD) && 2169b7b4d3426d2b5ecab21578eb20d8e456a1aace8fBen Dooks ((mrq->cmd && mrq->cmd->error) || 21701e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data && (mrq->data->error || 21711e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (mrq->data->stop && mrq->data->stop->error))) || 21721e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { 2173645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2174645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Some controllers need this kick or reset won't work here */ 21758213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) 2176645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* This is to force an update */ 21778213af3b7a4059f13ad8b5beb3e6d69d9301f27dAndy Shevchenko sdhci_update_clock(host); 2178645289dca5021224279e67b4655796cafdfdad00Pierre Ossman 2179645289dca5021224279e67b4655796cafdfdad00Pierre Ossman /* Spec says we should do both at the same time, but Ricoh 2180645289dca5021224279e67b4655796cafdfdad00Pierre Ossman controllers do not like that. */ 2181d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_CMD); 2182d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_reset(host, SDHCI_RESET_DATA); 2183d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2185d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mrq = NULL; 2186d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->cmd = NULL; 2187d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->data = NULL; 2188d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2189f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifndef SDHCI_USE_LEDS_CLASS 2190d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_deactivate_led(host); 21912f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 2192d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 21935f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2195d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2196d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_request_done(host->mmc, mrq); 219766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_runtime_pm_put(host); 2198d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2199d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2200d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_timeout_timer(unsigned long data) 2201d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2202d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2203d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman unsigned long flags; 2204d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2205d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = (struct sdhci_host*)data; 2206d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2207d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_irqsave(&host->lock, flags); 2208d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2209d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->mrq) { 2210a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Timeout waiting for hardware " 2211acf1da4522add3771f4851c09c7fe6bcf1dd6636Pierre Ossman "interrupt.\n", mmc_hostname(host->mmc)); 2212d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2213d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2214d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->data) { 221517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 2216d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2217d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } else { 2218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (host->cmd) 221917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 2220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else 222117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->mrq->cmd->error = -ETIMEDOUT; 2222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2225d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 22275f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 2228d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 2229d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2230d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2231cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nathstatic void sdhci_tuning_timer(unsigned long data) 2232cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath{ 2233cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath struct sdhci_host *host; 2234cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath unsigned long flags; 2235cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2236cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host = (struct sdhci_host *)data; 2237cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2238cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_lock_irqsave(&host->lock, flags); 2239cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2240cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2241cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2242cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath spin_unlock_irqrestore(&host->lock, flags); 2243cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath} 2244cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Interrupt handling * 2248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2250d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2251d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) 2252d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2253d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2254d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2255d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->cmd) { 2256a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Got command interrupt 0x%08x even " 2257b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no command operation was in progress.\n", 2258b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2259d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2260d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2261d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2262d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 226343b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman if (intmask & SDHCI_INT_TIMEOUT) 226417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -ETIMEDOUT; 226517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT | 226617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman SDHCI_INT_INDEX)) 226717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->cmd->error = -EILSEQ; 226843b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman 2269e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->error) { 2270d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->finish_tasklet); 2271e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2272e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2273e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2274e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman /* 2275e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The host can send and interrupt when the busy state has 2276e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * ended, allowing us to wait without wasting CPU cycles. 2277e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Unfortunately this is overloaded on the "data complete" 2278e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * interrupt, so we need to take some care when handling 2279e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * it. 2280e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * 2281e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * Note: The 1.0 specification is a bit ambiguous about this 2282e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * feature so there might be some problems with older 2283e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * controllers. 2284e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman */ 2285e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->flags & MMC_RSP_BUSY) { 2286e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd->data) 2287e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman DBG("Cannot wait for busy signal when also " 2288e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman "doing a data transfer"); 2289f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ)) 2290e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2291f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks 2292f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks /* The controller does not support the end-of-busy IRQ, 2293f945405cdecd9e0ae3e58ff84cabd19b4522965eBen Dooks * fall through and take the SDHCI_INT_RESPONSE */ 2294e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2295e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman 2296e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_RESPONSE) 229743b58b36b7e6554b8a96be6b9f63542c583c06e5Pierre Ossman sdhci_finish_command(host); 2298d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2299d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23000957c3339efa333b7895157eb18b9b578394f80cGeorge G. Davis#ifdef CONFIG_MMC_DEBUG 23016882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) 23026882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks{ 23036882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks const char *name = mmc_hostname(host->mmc); 23046882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 *desc = host->adma_desc; 23056882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le32 *dma; 23066882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks __le16 *len; 23076882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks u8 attr; 23086882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23096882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_dumpregs(host); 23106882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23116882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks while (true) { 23126882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks dma = (__le32 *)(desc + 4); 23136882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks len = (__le16 *)(desc + 2); 23146882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks attr = *desc; 23156882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23166882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", 23176882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); 23186882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23196882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks desc += 8; 23206882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 23216882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks if (attr & 2) 23226882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks break; 23236882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 23246882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks} 23256882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#else 23266882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooksstatic void sdhci_show_adma_error(struct sdhci_host *host) { } 23276882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks#endif 23286882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks 2329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 2330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2331069c9f142822d552ec885572945d8bce9eff0519Girish K S u32 command; 2332d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman BUG_ON(intmask == 0); 2333d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2334b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* CMD19 generates _only_ Buffer Read Ready interrupt */ 2335b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (intmask & SDHCI_INT_DATA_AVAIL) { 2336069c9f142822d552ec885572945d8bce9eff0519Girish K S command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)); 2337069c9f142822d552ec885572945d8bce9eff0519Girish K S if (command == MMC_SEND_TUNING_BLOCK || 2338069c9f142822d552ec885572945d8bce9eff0519Girish K S command == MMC_SEND_TUNING_BLOCK_HS200) { 2339b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->tuning_done = 1; 2340b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath wake_up(&host->buf_ready_int); 2341b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath return; 2342b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2343b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath } 2344b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 2345d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!host->data) { 2346d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2347e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * The "data complete" interrupt is also used to 2348e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * indicate that a busy state has ended. See comment 2349e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman * above in sdhci_cmd_irq(). 2350d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2351e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { 2352e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2353e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman sdhci_finish_command(host); 2354e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman return; 2355e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2356e809517f6fa5803a5a1cd56026f0e2190fc13d5cPierre Ossman } 2357d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2358a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Got data interrupt 0x%08x even " 2359b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman "though no data operation was in progress.\n", 2360b67ac3f339c76dfea3cc75fc0285b6d13edc35faPierre Ossman mmc_hostname(host->mmc), (unsigned)intmask); 2361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 2362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return; 2364d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_TIMEOUT) 236717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -ETIMEDOUT; 236822113efd00491310da802f3b1a9a66cfcf415facAries Lee else if (intmask & SDHCI_INT_DATA_END_BIT) 236922113efd00491310da802f3b1a9a66cfcf415facAries Lee host->data->error = -EILSEQ; 237022113efd00491310da802f3b1a9a66cfcf415facAries Lee else if ((intmask & SDHCI_INT_DATA_CRC) && 237122113efd00491310da802f3b1a9a66cfcf415facAries Lee SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) 237222113efd00491310da802f3b1a9a66cfcf415facAries Lee != MMC_BUS_TEST_R) 237317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman host->data->error = -EILSEQ; 23746882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks else if (intmask & SDHCI_INT_ADMA_ERROR) { 2375a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: ADMA error\n", mmc_hostname(host->mmc)); 23766882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks sdhci_show_adma_error(host); 23772134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->data->error = -EIO; 2378a4071fbbb9edbc5a24985b2f64ed45f35b90dbebHaijun Zhang if (host->ops->adma_workaround) 2379a4071fbbb9edbc5a24985b2f64ed45f35b90dbebHaijun Zhang host->ops->adma_workaround(host, intmask); 23806882a8c071d609f4c088bee41e79572c7cfc1790Ben Dooks } 2381d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 238217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (host->data->error) 2383d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_finish_data(host); 2384d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman else { 2385a406f5a3b68ee1db2306a2ba1c9b00dbd3505d05Pierre Ossman if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 2386d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_transfer_pio(host); 2387d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 23886ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman /* 23896ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * We currently don't do anything fancy with DMA 23906ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * boundaries, but as we can't disable the feature 23916ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman * we need to at least restart the transfer. 2392f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * 2393f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * According to the spec sdhci_readl(host, SDHCI_DMA_ADDRESS) 2394f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * should return a valid address to continue from, but as 2395f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * some controllers are faulty, don't trust them. 23966ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman */ 2397f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni if (intmask & SDHCI_INT_DMA_END) { 2398f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni u32 dmastart, dmanow; 2399f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmastart = sg_dma_address(host->data->sg); 2400f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = dmastart + host->data->bytes_xfered; 2401f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni /* 2402f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni * Force update to the next DMA block boundary. 2403f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni */ 2404f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni dmanow = (dmanow & 2405f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) + 2406f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni SDHCI_DEFAULT_BOUNDARY_SIZE; 2407f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered = dmanow - dmastart; 2408f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni DBG("%s: DMA base 0x%08x, transferred 0x%06x bytes," 2409f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni " next 0x%08x\n", 2410f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni mmc_hostname(host->mmc), dmastart, 2411f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni host->data->bytes_xfered, dmanow); 2412f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); 2413f6a03cbf43e586211f8ea088148c8ecd3fc4b5beMikko Vinni } 24146ba736a10e4ae63b38ccfee9f22b3263a6e5d050Pierre Ossman 2415e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (intmask & SDHCI_INT_DATA_END) { 2416e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman if (host->cmd) { 2417e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman /* 2418e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * Data managed to finish before the 2419e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * command completed. Make sure we do 2420e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman * things in the proper order. 2421e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman */ 2422e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman host->data_early = 1; 2423e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } else { 2424e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman sdhci_finish_data(host); 2425e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2426e538fbe83e374a3521128c1f4642aca037661c9dPierre Ossman } 2427d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2428d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2429d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24307d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic irqreturn_t sdhci_irq(int irq, void *dev_id) 2431d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2432d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman irqreturn_t result; 243366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter struct sdhci_host *host = dev_id; 24346379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein u32 intmask, unexpected = 0; 24356379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein int cardint = 0, max_loops = 16; 2436d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2437d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock(&host->lock); 2438d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 243966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->runtime_suspended) { 244066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock(&host->lock); 2441655bca7616bf6076d30b14d1478bca6807d49c45Adrian Hunter return IRQ_NONE; 244266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 244366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 24444e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov intmask = sdhci_readl(host, SDHCI_INT_STATUS); 2445d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 244662df67a523acd7a22d936bf946b1889dbd60ca98Mark Lord if (!intmask || intmask == 0xffffffff) { 2447d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_NONE; 2448d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman goto out; 2449d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2450d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24516379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Steinagain: 2452b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman DBG("*** %s got interrupt: 0x%08x\n", 2453b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(host->mmc), intmask); 2454d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24553192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { 2456d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) & 2457d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_CARD_PRESENT; 2458d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 2459d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo /* 2460d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * There is a observation on i.mx esdhc. INSERT bit will be 2461d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * immediately set again when it gets cleared, if a card is 2462d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * inserted. We have to mask the irq to prevent interrupt 2463d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * storm which will freeze the system. And the REMOVE gets 2464d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * the same situation. 2465d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * 2466d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * More testing are needed here to ensure it works for other 2467d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo * platforms though. 2468d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo */ 2469d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo sdhci_mask_irqs(host, present ? SDHCI_INT_CARD_INSERT : 2470d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_REMOVE); 2471d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo sdhci_unmask_irqs(host, present ? SDHCI_INT_CARD_REMOVE : 2472d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_INSERT); 2473d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo 24744e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT | 2475d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS); 2476d25928d1eed06a9c23c723466dfa7cbee0a5e07dShawn Guo intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE); 2477d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_schedule(&host->card_tasklet); 24783192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 2479d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 24803192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask & SDHCI_INT_CMD_MASK) { 24814e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK, 24824e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 24833192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); 2484d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2485d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2486d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_DATA_MASK) { 24874e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask & SDHCI_INT_DATA_MASK, 24884e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov SDHCI_INT_STATUS); 24893192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); 2490d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2491d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2492d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK); 2493d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2494964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman intmask &= ~SDHCI_INT_ERROR; 2495964f9ce2ff42dc47cf40fbd2f5c81cd60689e384Pierre Ossman 2496d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (intmask & SDHCI_INT_BUS_POWER) { 2497a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Card is consuming too much power!\n", 2498d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_hostname(host->mmc)); 24994e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS); 2500d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2501d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25029d26a5d3f2b9c4fe4b2ba491683c6989ecd6ae04Rolf Eike Beer intmask &= ~SDHCI_INT_BUS_POWER; 25033192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman 2504f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (intmask & SDHCI_INT_CARD_INT) 2505f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman cardint = 1; 2506f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2507f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman intmask &= ~SDHCI_INT_CARD_INT; 2508f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 25093192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman if (intmask) { 25106379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein unexpected |= intmask; 25114e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov sdhci_writel(host, intmask, SDHCI_INT_STATUS); 25123192a28f7d34ea8f1d0fef8ca5bc0314b5b5bb19Pierre Ossman } 2513d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2514d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman result = IRQ_HANDLED; 2515d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25166379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein intmask = sdhci_readl(host, SDHCI_INT_STATUS); 25170a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman 25180a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman /* 25190a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman * If we know we'll call the driver to signal SDIO IRQ, disregard 25200a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman * further indications of Card Interrupt in the status to avoid a 25210a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman * needless loop. 25220a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman */ 25230a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman if (cardint) 25240a8fd09ca9d4564a1f906b530ea08415a61cff58Alexey Neyman intmask &= ~SDHCI_INT_CARD_INT; 25256379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein if (intmask && --max_loops) 25266379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein goto again; 2527d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanout: 2528d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_unlock(&host->lock); 2529d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 25306379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein if (unexpected) { 25316379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein pr_err("%s: Unexpected interrupt 0x%08x.\n", 25326379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein mmc_hostname(host->mmc), unexpected); 25336379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein sdhci_dumpregs(host); 25346379b2375a0c5a6ad437616a4018e6b8fd95e97cAlexander Stein } 2535f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman /* 2536f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman * We have to delay this as it calls back into the driver. 2537f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman */ 2538f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman if (cardint) 2539f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman mmc_signal_sdio_irq(host->mmc); 2540f75979b77fb20b01522d8fab96dfc76cc9f42420Pierre Ossman 2541d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return result; 2542d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2543d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2544d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2545d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2546d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Suspend/resume * 2547d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2548d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2549d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2550d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_PM 2551ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liuvoid sdhci_enable_irq_wakeups(struct sdhci_host *host) 2552ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu{ 2553ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 val; 2554ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE 2555ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu | SDHCI_WAKE_ON_INT; 2556ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu 2557ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); 2558ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val |= mask ; 2559ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu /* Avoid fake wake up */ 2560ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) 2561ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE); 2562ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); 2563ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu} 2564ad080d7916a4701fda29a442a69be4fd54d19a2eKevin LiuEXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); 2565ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu 2566ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liuvoid sdhci_disable_irq_wakeups(struct sdhci_host *host) 2567ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu{ 2568ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 val; 2569ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE 2570ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu | SDHCI_WAKE_ON_INT; 2571ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu 2572ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL); 2573ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu val &= ~mask; 2574ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); 2575ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu} 2576ad080d7916a4701fda29a442a69be4fd54d19a2eKevin LiuEXPORT_SYMBOL_GPL(sdhci_disable_irq_wakeups); 2577d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 257829495aa04a30c21565243c5b9c028510446d242cManuel Laussint sdhci_suspend_host(struct sdhci_host *host) 2579d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2580a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball if (host->ops->platform_suspend) 2581a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball host->ops->platform_suspend(host); 2582a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball 25837260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 25847260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2585cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Disable tuning since we are suspending */ 2586973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 2587c6ced0db08010ed75df221a2946c5228454b38d5Aaron Lu del_timer_sync(&host->tuning_timer); 2588cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags &= ~SDHCI_NEEDS_RETUNING; 2589cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 2590cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 2591ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (!device_may_wakeup(mmc_dev(host->mmc))) { 2592ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); 2593ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu free_irq(host->irq, host); 2594ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } else { 2595ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_enable_irq_wakeups(host); 2596ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu enable_irq_wake(host->irq); 2597ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } 25984ee14ec65810702a95d195757d307c41ecfd1c71Ulf Hansson return 0; 2599d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2600d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2601b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_suspend_host); 2602d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2603b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_resume_host(struct sdhci_host *host) 2604b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 26054ee14ec65810702a95d195757d307c41ecfd1c71Ulf Hansson int ret = 0; 2606d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2607a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2608b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) 2609b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->ops->enable_dma(host); 2610b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2611d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2612ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (!device_may_wakeup(mmc_dev(host->mmc))) { 2613ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 2614ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu mmc_hostname(host->mmc), host); 2615ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu if (ret) 2616ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu return ret; 2617ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } else { 2618ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu sdhci_disable_irq_wakeups(host); 2619ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu disable_irq_wake(host->irq); 2620ad080d7916a4701fda29a442a69be4fd54d19a2eKevin Liu } 2621d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 26226308d2905bd30290d90f28730828fd572161dd11Adrian Hunter if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) && 26236308d2905bd30290d90f28730828fd572161dd11Adrian Hunter (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) { 26246308d2905bd30290d90f28730828fd572161dd11Adrian Hunter /* Card keeps power but host controller does not */ 26256308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_init(host, 0); 26266308d2905bd30290d90f28730828fd572161dd11Adrian Hunter host->pwr = 0; 26276308d2905bd30290d90f28730828fd572161dd11Adrian Hunter host->clock = 0; 26286308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 26296308d2905bd30290d90f28730828fd572161dd11Adrian Hunter } else { 26306308d2905bd30290d90f28730828fd572161dd11Adrian Hunter sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); 26316308d2905bd30290d90f28730828fd572161dd11Adrian Hunter mmiowb(); 26326308d2905bd30290d90f28730828fd572161dd11Adrian Hunter } 2633b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman 26347260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 26357260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 2636a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball if (host->ops->platform_resume) 2637a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball host->ops->platform_resume(host); 2638a1b13b4e18d62ea60aad9554f35d79c51328b8b6Chris Ball 2639cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Set the re-tuning expiration flag */ 2640973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) 2641cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->flags |= SDHCI_NEEDS_RETUNING; 2642cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 26432f4cbb3d834922ffa0309b6a08fa42dac87ef9d2Nicolas Pitre return ret; 2644d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 2645d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2646b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_resume_host); 2647d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif /* CONFIG_PM */ 2648d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 264966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#ifdef CONFIG_PM_RUNTIME 265066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 265166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_get(struct sdhci_host *host) 265266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 265366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_get_sync(host->mmc->parent); 265466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 265566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 265666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterstatic int sdhci_runtime_pm_put(struct sdhci_host *host) 265766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 265866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter pm_runtime_mark_last_busy(host->mmc->parent); 265966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return pm_runtime_put_autosuspend(host->mmc->parent); 266066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 266166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2662f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_on(struct sdhci_host *host) 2663f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 2664f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->runtime_suspended || host->bus_on) 2665f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter return; 2666f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter host->bus_on = true; 2667f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter pm_runtime_get_noresume(host->mmc->parent); 2668f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 2669f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter 2670f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunterstatic void sdhci_runtime_pm_bus_off(struct sdhci_host *host) 2671f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter{ 2672f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter if (host->runtime_suspended || !host->bus_on) 2673f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter return; 2674f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter host->bus_on = false; 2675f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter pm_runtime_put_noidle(host->mmc->parent); 2676f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter} 2677f0710a557cb17746b09234f01073a2cdafe4f4a5Adrian Hunter 267866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_suspend_host(struct sdhci_host *host) 267966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 268066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 268166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret = 0; 268266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 268366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Disable tuning since we are suspending */ 2684973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) { 268566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter del_timer_sync(&host->tuning_timer); 268666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags &= ~SDHCI_NEEDS_RETUNING; 268766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 268866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 268966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 269066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); 269166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 269266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 269366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter synchronize_irq(host->irq); 269466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 269566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 269666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = true; 269766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 269866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 269966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 270066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 270166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_suspend_host); 270266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 270366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunterint sdhci_runtime_resume_host(struct sdhci_host *host) 270466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter{ 270566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter unsigned long flags; 270666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter int ret = 0, host_flags = host->flags; 270766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 270866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host_flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 270966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (host->ops->enable_dma) 271066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->ops->enable_dma(host); 271166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter } 271266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 271366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_init(host, 0); 271466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 271566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Force clock and power re-program */ 271666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->pwr = 0; 271766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->clock = 0; 271866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_set_ios(host, &host->mmc->ios); 271966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 272066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios); 272152983382c74f59a3953e622d7661a24e1bc4388aKevin Liu if ((host_flags & SDHCI_PV_ENABLED) && 272252983382c74f59a3953e622d7661a24e1bc4388aKevin Liu !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) { 272352983382c74f59a3953e622d7661a24e1bc4388aKevin Liu spin_lock_irqsave(&host->lock, flags); 272452983382c74f59a3953e622d7661a24e1bc4388aKevin Liu sdhci_enable_preset_value(host, true); 272552983382c74f59a3953e622d7661a24e1bc4388aKevin Liu spin_unlock_irqrestore(&host->lock, flags); 272652983382c74f59a3953e622d7661a24e1bc4388aKevin Liu } 272766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 272866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Set the re-tuning expiration flag */ 2729973905feab85416784f36cc94b868392fd465ef4Aaron Lu if (host->flags & SDHCI_USING_RETUNING_TIMER) 273066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->flags |= SDHCI_NEEDS_RETUNING; 273166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 273266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_lock_irqsave(&host->lock, flags); 273366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 273466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->runtime_suspended = false; 273566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 273666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable SDIO IRQ */ 273766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if ((host->flags & SDHCI_SDIO_IRQ_ENABLED)) 273866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_sdio_irq_nolock(host, true); 273966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter /* Enable Card Detection */ 274166fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter sdhci_enable_card_detection(host); 274266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter spin_unlock_irqrestore(&host->lock, flags); 274466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274566fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter return ret; 274666fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter} 274766fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterEXPORT_SYMBOL_GPL(sdhci_runtime_resume_host); 274866fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 274966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter#endif 275066fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter 2751d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 2752d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2753b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman * Device allocation/registration * 2754d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 2755d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 2756d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2757b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanstruct sdhci_host *sdhci_alloc_host(struct device *dev, 2758b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman size_t priv_size) 2759d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 2760d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct mmc_host *mmc; 2761d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman struct sdhci_host *host; 2762d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2763b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(dev == NULL); 2764d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2765b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev); 2766d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman if (!mmc) 2767b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return ERR_PTR(-ENOMEM); 2768d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2769d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host = mmc_priv(mmc); 2770d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman host->mmc = mmc; 2771d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2772b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return host; 2773b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman} 27748a4da1430f7f2a16df3be9c7b5d55ba4e75b708cPierre Ossman 2775b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_alloc_host); 2776d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2777b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanint sdhci_add_host(struct sdhci_host *host) 2778b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 2779b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman struct mmc_host *mmc; 2780bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity u32 caps[2] = {0, 0}; 2781f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 max_current_caps; 2782f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath unsigned int ocr_avail; 2783b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman int ret; 2784d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2785b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman WARN_ON(host == NULL); 2786b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host == NULL) 2787b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -EINVAL; 2788d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2789b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc = host->mmc; 2790d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2791b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (debug_quirks) 2792b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman host->quirks = debug_quirks; 279366fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter if (debug_quirks2) 279466fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Hunter host->quirks2 = debug_quirks2; 2795d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2796d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 2797d96649ed5ace812ffc8d86252d7c663326ca47f8Pierre Ossman 27984e4141a526dd7f5ac3ce1458ae79ea6e5a515b06Anton Vorontsov host->version = sdhci_readw(host, SDHCI_HOST_VERSION); 27992134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version = (host->version & SDHCI_SPEC_VER_MASK) 28002134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman >> SDHCI_SPEC_VER_SHIFT; 280185105c53b0ce70a277160379f9d89309cefc0bfdZhangfei Gao if (host->version > SDHCI_SPEC_300) { 2802a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Unknown controller version (%d). " 2803b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "You may experience problems.\n", mmc_hostname(mmc), 28042134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->version); 28054a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman } 28064a9655051fb1efa568e53baf5dfb21e33bad6bf6Pierre Ossman 2807f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps : 2808ccc92c23240cdf952ef7cc39ba563910dcbc9cbeMaxim Levitsky sdhci_readl(host, SDHCI_CAPABILITIES); 2809d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2810bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity if (host->version >= SDHCI_SPEC_300) 2811bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity caps[1] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? 2812bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity host->caps1 : 2813bd6a8c30faf19b4e7abace93fb89efd6d72607ecPhilip Rakity sdhci_readl(host, SDHCI_CAPABILITIES_1); 2814f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 2815b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->quirks & SDHCI_QUIRK_FORCE_DMA) 2816a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2817f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath else if (!(caps[0] & SDHCI_CAN_DO_SDMA)) 2818a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors DBG("Controller doesn't have SDMA capability\n"); 28196743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman else 2820a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_SDMA; 2821d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2822b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) && 2823a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA)) { 2824cee687ce4ab1197e20d4dacc09df01531362fdbdRolf Eike Beer DBG("Disabling DMA as it is marked broken\n"); 2825a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= ~SDHCI_USE_SDMA; 28267c168e3db7d900008ee304574057e0dc1a8505afFeng Tang } 28277c168e3db7d900008ee304574057e0dc1a8505afFeng Tang 2828f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if ((host->version >= SDHCI_SPEC_200) && 2829f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath (caps[0] & SDHCI_CAN_DO_ADMA2)) 2830a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags |= SDHCI_USE_ADMA; 28312134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 28322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) && 28332134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman (host->flags & SDHCI_USE_ADMA)) { 28342134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman DBG("Disabling ADMA as it is marked broken\n"); 28352134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 28362134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 28372134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 2838a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { 2839b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma) { 2840b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman if (host->ops->enable_dma(host)) { 2841a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: No suitable DMA " 2842b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman "available. Falling back to PIO.\n", 2843b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_hostname(mmc)); 2844a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors host->flags &= 2845a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA); 2846b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman } 2847d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2848d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman } 2849d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 28502134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) { 28512134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman /* 28522134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * We need to allocate descriptors for all sg entries 28532134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * (128) and potentially one alignment transfer for 28542134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * each of those entries. 28552134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman */ 28562134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = kmalloc((128 * 2 + 1) * 4, GFP_KERNEL); 28572134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = kmalloc(128 * 4, GFP_KERNEL); 28582134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (!host->adma_desc || !host->align_buffer) { 28592134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 28602134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 2861a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Unable to allocate ADMA " 28622134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman "buffers. Falling back to standard DMA.\n", 28632134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc_hostname(mmc)); 28642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->flags &= ~SDHCI_USE_ADMA; 28652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 28662134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman } 28672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 28687659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman /* 28697659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * If we use DMA, then it's up to the caller to set the DMA 28707659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask, but PIO does not need the hw shim so we set a new 28717659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman * mask here in that case. 28727659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman */ 2873a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) { 28747659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman host->dma_mask = DMA_BIT_MASK(64); 28757659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman mmc_dev(host->mmc)->dma_mask = &host->dma_mask; 28767659150c60839a2bd31f74e866374abb9be17e43Pierre Ossman } 2877d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2878c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao if (host->version >= SDHCI_SPEC_300) 2879f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_V3_BASE_MASK) 2880c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2881c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao else 2882f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath host->max_clk = (caps[0] & SDHCI_CLOCK_BASE_MASK) 2883c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao >> SDHCI_CLOCK_BASE_SHIFT; 2884c4687d5f601be3f928b815b46964f7426c31aec7Zhangfei Gao 28854240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk *= 1000000; 2886f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov if (host->max_clk == 0 || host->quirks & 2887f27f47ef5b67106ff1cdeebf061387a7b30c12bcAnton Vorontsov SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) { 28884240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks if (!host->ops->get_max_clock) { 2889a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't specify base clock " 28904240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks "frequency.\n", mmc_hostname(mmc)); 28914240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks return -ENODEV; 28924240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks } 28934240ff0a02cb52f7d10dc1df6d82ba9c27dba07bBen Dooks host->max_clk = host->ops->get_max_clock(host); 28948ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman } 2895d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 2896d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 2897c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case of Host Controller v3.00, find out whether clock 2898c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is supported. 2899c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2900c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul = (caps[1] & SDHCI_CLOCK_MUL_MASK) >> 2901c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath SDHCI_CLOCK_MUL_SHIFT; 2902c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2903c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2904c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * In case the value in Clock Multiplier is 0, then programmable 2905c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * clock mode is not supported, otherwise the actual clock 2906c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * multiplier is one more than the value of Clock Multiplier 2907c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath * in the Capabilities Register. 2908c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath */ 2909c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) 2910c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath host->clk_mul += 1; 2911c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath 2912c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath /* 2913d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Set host parameters. 2914d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 2915d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc->ops = &sdhci_ops; 2916c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk; 2917ce5f036bbbfc6c21d7b55b8fdaa2e2bd56392d94Marek Szyprowski if (host->ops->get_min_clock) 2918a9e58f25734e153b8c6516d904e2398fb8b0b23dAnton Vorontsov mmc->f_min = host->ops->get_min_clock(host); 2919c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath else if (host->version >= SDHCI_SPEC_300) { 2920c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath if (host->clk_mul) { 2921c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = (host->max_clk * host->clk_mul) / 1024; 2922c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_max = host->max_clk * host->clk_mul; 2923c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 2924c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300; 2925c3ed3877625f10d600b0eca2ca48a68c46aed660Arindam Nath } else 29260397526d6ae2518b6c53efd1ff1e81b7d24c91daZhangfei Gao mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200; 292715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity 2928272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk = 2929272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; 2930272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->timeout_clk == 0) { 2931272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->ops->get_timeout_clock) { 2932272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk = host->ops->get_timeout_clock(host); 2933272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } else if (!(host->quirks & 2934272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { 2935a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't specify timeout clock " 2936272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko "frequency.\n", mmc_hostname(mmc)); 2937272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko return -ENODEV; 2938272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2939272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko } 2940272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) 2941272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko host->timeout_clk *= 1000; 2942272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 2943272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) 294465be3fef930beb3e282e7f23dfba63289971430cAndy Shevchenko host->timeout_clk = mmc->f_max / 1000; 2945272308caaa6c0f2b1500a3660b9fa75f17a45cc4Andy Shevchenko 294668eb80e06bfa06035d0304686124974780308faeUlf Hansson mmc->max_busy_timeout = (1 << 27) / host->timeout_clk; 294758d1246db340793c408b22884598e4ce4d1d4abaAdrian Hunter 2948e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; 2949e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin 2950e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) 2951e89d456fcdde2df008c032bf928e69e628e07a28Andrei Warkentin host->flags |= SDHCI_AUTO_CMD12; 29525fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov 29538edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin /* Auto-CMD23 stuff only works in ADMA or PIO. */ 29544f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin if ((host->version >= SDHCI_SPEC_300) && 29558edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin ((host->flags & SDHCI_USE_ADMA) || 29564f3d3e9b50931a3ec70f324d53fb7437e2a39388Andrei Warkentin !(host->flags & SDHCI_USE_SDMA))) { 29578edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin host->flags |= SDHCI_AUTO_CMD23; 29588edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc)); 29598edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } else { 29608edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin DBG("%s: Auto-CMD23 unavailable\n", mmc_hostname(mmc)); 29618edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin } 29628edf63710bd43e62d59bfe017df542fa0713bbb3Andrei Warkentin 296315ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity /* 296415ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * A controller may support 8-bit width, but the board itself 296515ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * might not have the pins brought out. Boards that support 296615ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in 296715ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * their platform code before calling sdhci_add_host(), and we 296815ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity * won't assume 8-bit width for hosts without that CAP. 296915ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity */ 29705fe23c7f51def59f66bc6aeee988ef1a467a2c8cAnton Vorontsov if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) 297115ec44611904be0dcc97b84c29fbf964e5e2b36fPhilip Rakity mmc->caps |= MMC_CAP_4_BIT_DATA; 2972d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 297363ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23) 297463ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang mmc->caps &= ~MMC_CAP_CMD23; 297563ef5d8c28b2a944f104d854254941e7375c85a3Jerry Huang 2976f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_DO_HISPD) 2977a29e7e18bddde778deb2cb101dbceca56b15e05eZhangfei Gao mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; 2978cd9277c011a99769fa371521b460ed57f6d280b1Pierre Ossman 2979176d1ed426a2a73a87c62a8aa05f6d002353cd50Jaehoon Chung if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && 2980eb6d5ae1c918cefbfe06f6f96e1a75f2179d82ceDaniel Drake !(host->mmc->caps & MMC_CAP_NONREMOVABLE)) 298168d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov mmc->caps |= MMC_CAP_NEEDS_POLL; 298268d1fb7e229c6f95be4fbbe3eb46b24e41184924Anton Vorontsov 29836231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity /* If vqmmc regulator and no 1.8V signalling, then there's no UHS */ 2984462849aad50fced728d82a2ddba1b9d348e32f67Mark Brown host->vqmmc = regulator_get_optional(mmc_dev(mmc), "vqmmc"); 2985657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (IS_ERR_OR_NULL(host->vqmmc)) { 2986657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (PTR_ERR(host->vqmmc) < 0) { 2987657d59823c095e8f03e2744d765f53700331ff8fKevin Liu pr_info("%s: no vqmmc regulator found\n", 2988657d59823c095e8f03e2744d765f53700331ff8fKevin Liu mmc_hostname(mmc)); 2989657d59823c095e8f03e2744d765f53700331ff8fKevin Liu host->vqmmc = NULL; 2990657d59823c095e8f03e2744d765f53700331ff8fKevin Liu } 29918363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } else { 2992a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball ret = regulator_enable(host->vqmmc); 2993cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu if (!regulator_is_supported_voltage(host->vqmmc, 1700000, 2994cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 1950000)) 29958363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu caps[1] &= ~(SDHCI_SUPPORT_SDR104 | 29968363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu SDHCI_SUPPORT_SDR50 | 29978363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu SDHCI_SUPPORT_DDR50); 2998a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball if (ret) { 2999a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball pr_warn("%s: Failed to enable vqmmc regulator: %d\n", 3000a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball mmc_hostname(mmc), ret); 3001a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball host->vqmmc = NULL; 3002a3361abaae810b717fcb7191e0558bcbdaf1c12dChris Ball } 30038363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } 30046231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 30056a66180a252f5856fc25de69c6313831f343f50fDaniel Drake if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) 30066a66180a252f5856fc25de69c6313831f343f50fDaniel Drake caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | 30076a66180a252f5856fc25de69c6313831f343f50fDaniel Drake SDHCI_SUPPORT_DDR50); 30086a66180a252f5856fc25de69c6313831f343f50fDaniel Drake 30094188bba0e9e7ba58d231b528df495666f2742b74Al Cooper /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ 30104188bba0e9e7ba58d231b528df495666f2742b74Al Cooper if (caps[1] & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | 30114188bba0e9e7ba58d231b528df495666f2742b74Al Cooper SDHCI_SUPPORT_DDR50)) 3012f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; 3013f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3014f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* SDR104 supports also implies SDR50 support */ 3015156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO if (caps[1] & SDHCI_SUPPORT_SDR104) { 3016f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50; 3017156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO /* SD3.0: SDR104 is supported so (for eMMC) the caps2 3018156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO * field can be promoted to support HS200. 3019156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO */ 302013868bf20f2f2c305f96e23620b024e167d6f9cbDavid Cohen if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200)) 302113868bf20f2f2c305f96e23620b024e167d6f9cbDavid Cohen mmc->caps2 |= MMC_CAP2_HS200; 3022156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO } else if (caps[1] & SDHCI_SUPPORT_SDR50) 3023f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_SDR50; 3024f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 30259107ebbf9652c033eb5dd10a6ea34a132db3cde1Micky Ching if ((caps[1] & SDHCI_SUPPORT_DDR50) && 30269107ebbf9652c033eb5dd10a6ea34a132db3cde1Micky Ching !(host->quirks2 & SDHCI_QUIRK2_BROKEN_DDR50)) 3027f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->caps |= MMC_CAP_UHS_DDR50; 3028f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3029069c9f142822d552ec885572945d8bce9eff0519Girish K S /* Does the host need tuning for SDR50? */ 3030b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (caps[1] & SDHCI_USE_SDR50_TUNING) 3031b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath host->flags |= SDHCI_SDR50_NEEDS_TUNING; 3032b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 3033156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO /* Does the host need tuning for SDR104 / HS200? */ 3034069c9f142822d552ec885572945d8bce9eff0519Girish K S if (mmc->caps2 & MMC_CAP2_HS200) 3035156e14b126ffb6f040bc6f1aff3c51077e42a744Giuseppe CAVALLARO host->flags |= SDHCI_SDR104_NEEDS_TUNING; 3036069c9f142822d552ec885572945d8bce9eff0519Girish K S 3037d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Driver Type(s) (A, C, D) supported by the host */ 3038d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_A) 3039d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_A; 3040d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_C) 3041d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_C; 3042d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (caps[1] & SDHCI_DRIVER_TYPE_D) 3043d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc->caps |= MMC_CAP_DRIVER_TYPE_D; 3044d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 3045cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initial value for re-tuning timer count */ 3046cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> 3047cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_TIMER_COUNT_SHIFT; 3048cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 3049cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* 3050cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * In case Re-tuning Timer is not disabled, the actual value of 3051cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath * re-tuning timer will be 2 ^ (n - 1). 3052cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath */ 3053cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->tuning_count) 3054cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_count = 1 << (host->tuning_count - 1); 3055cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 3056cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Re-tuning mode supported by the Host Controller */ 3057cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_mode = (caps[1] & SDHCI_RETUNING_MODE_MASK) >> 3058cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath SDHCI_RETUNING_MODE_SHIFT; 3059cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 30608f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail = 0; 3061bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 3062462849aad50fced728d82a2ddba1b9d348e32f67Mark Brown host->vmmc = regulator_get_optional(mmc_dev(mmc), "vmmc"); 3063657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (IS_ERR_OR_NULL(host->vmmc)) { 3064657d59823c095e8f03e2744d765f53700331ff8fKevin Liu if (PTR_ERR(host->vmmc) < 0) { 3065657d59823c095e8f03e2744d765f53700331ff8fKevin Liu pr_info("%s: no vmmc regulator found\n", 3066657d59823c095e8f03e2744d765f53700331ff8fKevin Liu mmc_hostname(mmc)); 3067657d59823c095e8f03e2744d765f53700331ff8fKevin Liu host->vmmc = NULL; 3068657d59823c095e8f03e2744d765f53700331ff8fKevin Liu } 30698363c374145b69bb177ed7e658a2b22f9c64910fKevin Liu } 3070bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 307168737043bb155b42d54943d25153b901fd16e535Philip Rakity#ifdef CONFIG_REGULATOR 3072a4f8f257eddcdf13417476c8479c616560a4417aMarek Szyprowski /* 3073a4f8f257eddcdf13417476c8479c616560a4417aMarek Szyprowski * Voltage range check makes sense only if regulator reports 3074a4f8f257eddcdf13417476c8479c616560a4417aMarek Szyprowski * any voltage value. 3075a4f8f257eddcdf13417476c8479c616560a4417aMarek Szyprowski */ 3076a4f8f257eddcdf13417476c8479c616560a4417aMarek Szyprowski if (host->vmmc && regulator_get_voltage(host->vmmc) > 0) { 3077cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu ret = regulator_is_supported_voltage(host->vmmc, 2700000, 3078cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 3600000); 307968737043bb155b42d54943d25153b901fd16e535Philip Rakity if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330))) 308068737043bb155b42d54943d25153b901fd16e535Philip Rakity caps[0] &= ~SDHCI_CAN_VDD_330; 308168737043bb155b42d54943d25153b901fd16e535Philip Rakity if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300))) 308268737043bb155b42d54943d25153b901fd16e535Philip Rakity caps[0] &= ~SDHCI_CAN_VDD_300; 3083cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu ret = regulator_is_supported_voltage(host->vmmc, 1700000, 3084cec2e216f72c6b5ccdadb60aadbe99821d744503Kevin Liu 1950000); 308568737043bb155b42d54943d25153b901fd16e535Philip Rakity if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180))) 308668737043bb155b42d54943d25153b901fd16e535Philip Rakity caps[0] &= ~SDHCI_CAN_VDD_180; 308768737043bb155b42d54943d25153b901fd16e535Philip Rakity } 308868737043bb155b42d54943d25153b901fd16e535Philip Rakity#endif /* CONFIG_REGULATOR */ 308968737043bb155b42d54943d25153b901fd16e535Philip Rakity 3090f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 3091f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * According to SD Host Controller spec v3.00, if the Host System 3092f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * can afford more than 150mA, Host Driver should set XPC to 1. Also 3093f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * the value is meaningful only if Voltage Support in the Capabilities 3094f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * register is set. The actual current value is 4 times the register 3095f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * value. 3096f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 3097f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT); 3098bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity if (!max_current_caps && host->vmmc) { 3099bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity u32 curr = regulator_get_current_limit(host->vmmc); 3100bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity if (curr > 0) { 3101bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 3102bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity /* convert to SDHCI_MAX_CURRENT format */ 3103bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = curr/1000; /* convert to mA */ 3104bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER; 3105bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity 3106bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity curr = min_t(u32, curr, SDHCI_MAX_CURRENT_LIMIT); 3107bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity max_current_caps = 3108bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_330_SHIFT) | 3109bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_300_SHIFT) | 3110bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity (curr << SDHCI_MAX_CURRENT_180_SHIFT); 3111bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity } 3112bad37e1ac6b1a73ed30702b24a45c27c4f53aadaPhilip Rakity } 3113f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3114f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_330) { 31158f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34; 3116f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 311755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_330 = ((max_current_caps & 3118f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_MASK) >> 3119f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_330_SHIFT) * 3120f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3121f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3122f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_300) { 31238f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31; 3124f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 312555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_300 = ((max_current_caps & 3126f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_MASK) >> 3127f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_300_SHIFT) * 3128f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3129f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3130f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (caps[0] & SDHCI_CAN_VDD_180) { 31318f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai ocr_avail |= MMC_VDD_165_195; 31328f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai 313355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu mmc->max_current_180 = ((max_current_caps & 3134f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_MASK) >> 3135f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_180_SHIFT) * 3136f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath SDHCI_MAX_CURRENT_MULTIPLIER; 3137f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 3138f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 3139c0b887b66c95fe5abaac071b8332b8c21113d84bHaijun Zhang if (host->ocr_mask) 3140c0b887b66c95fe5abaac071b8332b8c21113d84bHaijun Zhang ocr_avail = host->ocr_mask; 3141c0b887b66c95fe5abaac071b8332b8c21113d84bHaijun Zhang 31428f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail = ocr_avail; 31438f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio = ocr_avail; 31448f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sdio) 31458f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sdio &= host->ocr_avail_sdio; 31468f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd = ocr_avail; 31478f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 31488f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= host->ocr_avail_sd; 31498f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai else /* normal SD controllers don't support 1.8V */ 31508f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_sd &= ~MMC_VDD_165_195; 31518f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc = ocr_avail; 31528f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_mmc) 31538f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai mmc->ocr_avail_mmc &= host->ocr_avail_mmc; 3154146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 3155146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman if (mmc->ocr_avail == 0) { 3156a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Hardware doesn't report any " 3157b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman "support voltages.\n", mmc_hostname(mmc)); 3158b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return -ENODEV; 3159146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman } 3160146ad66eac836c0b976c98f428d73e1f6a75270dPierre Ossman 3161d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman spin_lock_init(&host->lock); 3162d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3163d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 31642134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * Maximum number of segments. Depends on if the hardware 31652134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * can do scatter/gather or not. 3166d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 31672134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman if (host->flags & SDHCI_USE_ADMA) 3168a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 3169a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors else if (host->flags & SDHCI_USE_SDMA) 3170a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 1; 31712134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman else /* PIO */ 3172a36274e0184193e393fb82957925c3981a6b0477Martin K. Petersen mmc->max_segs = 128; 3173d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3174d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3175bab7696184bbf0ea48d56902bd1f9ac983079ad2Pierre Ossman * Maximum number of sectors in one transfer. Limited by DMA boundary 317655db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * size (512KiB). 3177d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 317855db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman mmc->max_req_size = 524288; 3179d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3180d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3181d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Maximum segment size. Could be one segment with the maximum number 31822134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * of bytes. When doing hardware scatter/gather, each entry cannot 31832134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman * be larger than 64 KiB though. 3184d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 318530652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->flags & SDHCI_USE_ADMA) { 318630652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) 318730652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65535; 318830652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson else 318930652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson mmc->max_seg_size = 65536; 319030652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } else { 31912134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman mmc->max_seg_size = mmc->max_req_size; 319230652aa36b58d57fcc1a0acce51e391bbb6edf5eOlof Johansson } 3193d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3194d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman /* 3195fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * Maximum block size. This varies from controller to controller and 3196fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman * is specified in the capabilities register. 3197fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman */ 31980633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) { 31990633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 2; 32000633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } else { 3201f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >> 32020633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov SDHCI_MAX_BLOCK_SHIFT; 32030633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov if (mmc->max_blk_size >= 3) { 3204a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Invalid maximum block size, " 32050633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov "assuming 512 bytes\n", mmc_hostname(mmc)); 32060633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 0; 32070633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 32080633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov } 32090633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov 32100633f654241483edc8a235ab87264ff6bbcd08d5Anton Vorontsov mmc->max_blk_size = 512 << mmc->max_blk_size; 3211fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman 3212fe4a3c7a20f14d86022a8132adbf6ddb98e7197cPierre Ossman /* 321355db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman * Maximum block count. 321455db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman */ 32151388eefd5a5e6aaa3cb04070bfc2b944c1d24b82Ben Dooks mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; 321655db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman 321755db890a838c7b37256241b1fc53d6344aa79cc0Pierre Ossman /* 3218d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Init tasklets. 3219d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman */ 3220d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->card_tasklet, 3221d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_card, (unsigned long)host); 3222d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_init(&host->finish_tasklet, 3223d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_tasklet_finish, (unsigned long)host); 3224d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3225e4cad1b5a4851c90c1bcf460062074a2fa10815bAl Viro setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); 3226d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3227cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath if (host->version >= SDHCI_SPEC_300) { 3228b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath init_waitqueue_head(&host->buf_ready_int); 3229b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 3230cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath /* Initialize re-tuning timer */ 3231cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath init_timer(&host->tuning_timer); 3232cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.data = (unsigned long)host; 3233cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath host->tuning_timer.function = sdhci_tuning_timer; 3234cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath } 3235cf2b5eea1ea0ff9b3184bc6771bcb93a9fdcd1d9Arindam Nath 32362af502ca640969e335c02be3834b86c5b58be591Shawn Guo sdhci_init(host, 0); 32372af502ca640969e335c02be3834b86c5b58be591Shawn Guo 3238dace145374b8e39aeb920304c358ab5e220341abThomas Gleixner ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, 3239b69c9058907642f8e1b32076906755c6623ea060Pierre Ossman mmc_hostname(mmc), host); 32400fc81ee3102efedd4571e28372d2242c694c67ecMark Brown if (ret) { 32410fc81ee3102efedd4571e28372d2242c694c67ecMark Brown pr_err("%s: Failed to request IRQ %d: %d\n", 32420fc81ee3102efedd4571e28372d2242c694c67ecMark Brown mmc_hostname(mmc), host->irq, ret); 32438ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossman goto untasklet; 32440fc81ee3102efedd4571e28372d2242c694c67ecMark Brown } 3245d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3246d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#ifdef CONFIG_MMC_DEBUG 3247d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman sdhci_dumpregs(host); 3248d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman#endif 3249d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3250f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 32515dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa snprintf(host->led_name, sizeof(host->led_name), 32525dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa "%s::", mmc_hostname(mmc)); 32535dbace0c9ba110c1a3810a89fa6bf12b7574b5a3Helmut Schaa host->led.name = host->led_name; 32542f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness = LED_OFF; 32552f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.default_trigger = mmc_hostname(mmc); 32562f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman host->led.brightness_set = sdhci_led_control; 32572f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 3258b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman ret = led_classdev_register(mmc_dev(mmc), &host->led); 32590fc81ee3102efedd4571e28372d2242c694c67ecMark Brown if (ret) { 32600fc81ee3102efedd4571e28372d2242c694c67ecMark Brown pr_err("%s: Failed to register LED device: %d\n", 32610fc81ee3102efedd4571e28372d2242c694c67ecMark Brown mmc_hostname(mmc), ret); 32622f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman goto reset; 32630fc81ee3102efedd4571e28372d2242c694c67ecMark Brown } 32642f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 32652f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 32665f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman mmiowb(); 32675f25a66f6bbac563c94af94f03491b3ae43c40afPierre Ossman 3268d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman mmc_add_host(mmc); 3269d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3270a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info("%s: SDHCI controller on %s [%s] using %s\n", 3271d1b268630875a7713b5d468a0c03403c5b721c8eKay Sievers mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)), 3272a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_ADMA) ? "ADMA" : 3273a13abc7b0814da7733c531453a207729b542ecf8Richard Röjfors (host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO"); 3274d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 32757260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_enable_card_detection(host); 32767260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 3277d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return 0; 3278d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3279f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 32802f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossmanreset: 32812f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 3282b0a8dece55ebe792b394e0c73fa365ad24c3ec32Kevin Liu sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); 32832f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman free_irq(host->irq, host); 32842f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 32858ef1a14379e105c1419d21e96ffac53202bc0501Pierre Ossmanuntasklet: 3286d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 3287d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 3288d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3289d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman return ret; 3290d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3291d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3292b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_add_host); 3293d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 32941e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossmanvoid sdhci_remove_host(struct sdhci_host *host, int dead) 3295b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman{ 32961e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman unsigned long flags; 32971e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 32981e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (dead) { 32991e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_lock_irqsave(&host->lock, flags); 33001e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33011e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->flags |= SDHCI_DEVICE_DEAD; 33021e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33031e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (host->mrq) { 3304a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: Controller removed during " 33051e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman " transfer!\n", mmc_hostname(host->mmc)); 33061e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33071e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman host->mrq->cmd->error = -ENOMEDIUM; 33081e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman tasklet_schedule(&host->finish_tasklet); 33091e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 33101e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33111e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman spin_unlock_irqrestore(&host->lock, flags); 33121e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman } 33131e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman 33147260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov sdhci_disable_card_detection(host); 33157260cf5e12393536ce61d184c3fc750fb2ba635aAnton Vorontsov 3316b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_remove_host(host->mmc); 3317d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3318f9134319c81c6c56e0ddf38e7adac2492b243d9bPierre Ossman#ifdef SDHCI_USE_LEDS_CLASS 33192f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman led_classdev_unregister(&host->led); 33202f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman#endif 33212f730fec83be76f1b3b8f0066b3447f55c50d7a0Pierre Ossman 33221e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman if (!dead) 33231e72859e3ae16346d4007024b20d2d4ef387dcc3Pierre Ossman sdhci_reset(host, SDHCI_RESET_ALL); 3324d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3325b0a8dece55ebe792b394e0c73fa365ad24c3ec32Kevin Liu sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK); 3326d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman free_irq(host->irq, host); 3327d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3328d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman del_timer_sync(&host->timer); 3329d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3330d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->card_tasklet); 3331d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman tasklet_kill(&host->finish_tasklet); 33322134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 333377dcb3f4c344d4c9619803848f1aba4d271dac7bPhilip Rakity if (host->vmmc) { 333477dcb3f4c344d4c9619803848f1aba4d271dac7bPhilip Rakity regulator_disable(host->vmmc); 33359bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski regulator_put(host->vmmc); 333677dcb3f4c344d4c9619803848f1aba4d271dac7bPhilip Rakity } 33379bea3c850dbff2296892298614388bdc71ad2170Marek Szyprowski 33386231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity if (host->vqmmc) { 33396231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_disable(host->vqmmc); 33406231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity regulator_put(host->vqmmc); 33416231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity } 33426231f3de1332b2a8a90e0c598ab6acc8f1eff7c1Philip Rakity 33432134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->adma_desc); 33442134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman kfree(host->align_buffer); 33452134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman 33462134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->adma_desc = NULL; 33472134a922c6e75c779983cad5d8aae832275f5a0dPierre Ossman host->align_buffer = NULL; 3348d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3349d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3350b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_remove_host); 3351d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3352b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossmanvoid sdhci_free_host(struct sdhci_host *host) 3353d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3354b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman mmc_free_host(host->mmc); 3355d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3356d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3357b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanEXPORT_SYMBOL_GPL(sdhci_free_host); 3358d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3359d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman/*****************************************************************************\ 3360d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3361d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * Driver init/exit * 3362d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman * * 3363d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman\*****************************************************************************/ 3364d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3365d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic int __init sdhci_drv_init(void) 3366d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3367a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME 336852fbf9c976b36654e08e94c3107ddbaac7e2da33Pierre Ossman ": Secure Digital Host Controller Interface driver\n"); 3369a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_info(DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); 3370d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3371b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre Ossman return 0; 3372d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3373d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3374d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanstatic void __exit sdhci_drv_exit(void) 3375d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman{ 3376d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman} 3377d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3378d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_init(sdhci_drv_init); 3379d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossmanmodule_exit(sdhci_drv_exit); 3380d129bceb1d44ed3c23b99164849193703372bab4Pierre Ossman 3381df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre Ossmanmodule_param(debug_quirks, uint, 0444); 338266fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian Huntermodule_param(debug_quirks2, uint, 0444); 33836743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 338432710e8fd537adeb53f98dec92e4a77caac512f5Pierre OssmanMODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 3385b8c86fc5d8deaa5a6dc49c2c1ed144e6838bf0f3Pierre OssmanMODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver"); 3386d129bceb1d44ed3c23b99164849193703372bab4Pierre OssmanMODULE_LICENSE("GPL"); 33876743527441430586aa82a0dee1b2700a2a974ebcPierre Ossman 3388df673b227ce08a7706b30fd2bf6512393d9c3c29Pierre OssmanMODULE_PARM_DESC(debug_quirks, "Force certain quirks."); 338966fd8ad5100b5003046aa744a4f12fa31bb831f9Adrian HunterMODULE_PARM_DESC(debug_quirks2, "Force certain other quirks."); 3390