17ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 270f10482c668301c483acded13bf68780ad352b9Pierre Ossman * linux/drivers/mmc/core/sd.c 37ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * 47ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved. 67ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 77ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * 87ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * published by the Free Software Foundation. 117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/err.h> 149288cac05405a7da406097a44721aa4004609b4dWolfram Sang#include <linux/sizes.h> 155a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 160205a904df57bf2ed79571fe097b99d2940659b1Paul Gortmaker#include <linux/stat.h> 170cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson#include <linux/pm_runtime.h> 187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/host.h> 207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/card.h> 217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/mmc.h> 223373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman#include <linux/mmc/sd.h> 237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "core.h" 254101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman#include "bus.h" 267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "mmc_ops.h" 27ce1014965ae2538e7447b19879bd0e8109690b79Mark Brown#include "sd.h" 287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sd_ops.h" 297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tran_exp[] = { 317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10000, 100000, 1000000, 10000000, 327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 0, 0, 0 337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned char tran_mant[] = { 367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_exp[] = { 417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_mant[] = { 457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 499288cac05405a7da406097a44721aa4004609b4dWolfram Sangstatic const unsigned int sd_au_size[] = { 509288cac05405a7da406097a44721aa4004609b4dWolfram Sang 0, SZ_16K / 512, SZ_32K / 512, SZ_64K / 512, 519288cac05405a7da406097a44721aa4004609b4dWolfram Sang SZ_128K / 512, SZ_256K / 512, SZ_512K / 512, SZ_1M / 512, 529288cac05405a7da406097a44721aa4004609b4dWolfram Sang SZ_2M / 512, SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, 539288cac05405a7da406097a44721aa4004609b4dWolfram Sang SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512, 549288cac05405a7da406097a44721aa4004609b4dWolfram Sang}; 559288cac05405a7da406097a44721aa4004609b4dWolfram Sang 567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#define UNSTUFF_BITS(resp,start,size) \ 577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman ({ \ 587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __size = size; \ 597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __off = 3 - ((start) / 32); \ 617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __shft = (start) & 31; \ 627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 __res; \ 637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman \ 647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res = resp[__off] >> __shft; \ 657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (__size + __shft > 32) \ 667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res & __mask; \ 687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman }) 697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_decode_cid(struct mmc_card *card) 747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_cid; 767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman memset(&card->cid, 0, sizeof(struct mmc_cid)); 787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD doesn't currently have a version field so we will 817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * have to assume we can parse this. 827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year += 2000; /* SD cards year offset */ 977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 102bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_csd(struct mmc_card *card) 1037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_csd *csd = &card->csd; 1057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int e, m, csd_struct; 1067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_csd; 1077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 1097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman switch (csd_struct) { 1117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 0: 1127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << (e + 2); 1257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1303d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 134dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 135dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 46, 1)) { 136dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 137dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else if (csd->write_blkbits >= 9) { 138dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; 139dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 140dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 1417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 1: 1437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 1443a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath * This is a block-addressed SDHC or SDXC card. Most 1457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * interesting fields are unused and have fixed 1467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * values. To avoid getting tripped by buggy cards, 1477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * we assume those fixed values ourselves. 1487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_blockaddr(card); 1507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = 0; /* Unused */ 1527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = 0; /* Unused */ 1537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1583a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath csd->c_size = UNSTUFF_BITS(resp, 48, 22); 1593a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 1603a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* SDXC cards have a minimum C_SIZE of 0x00FFFF */ 1613a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath if (csd->c_size >= 0xFFFF) 1623a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath mmc_card_set_ext_capacity(card); 1637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << 10; 1667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = 9; 1687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = 0; 1697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = 0; 1707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = 0; 1717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = 4; /* Unused */ 1727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = 9; 1737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = 0; 174dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 1757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman default: 177a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: unrecognised CSD structure version %d\n", 1787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), csd_struct); 179bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 181bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 182dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erase_size = csd->erase_size; 183dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 184bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 190bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_scr(struct mmc_card *card) 1917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct sd_scr *scr = &card->scr; 1937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int scr_struct; 1947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 resp[4]; 1957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[3] = card->raw_scr[1]; 1977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[2] = card->raw_scr[0]; 1987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 2007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (scr_struct != 0) { 201a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: unrecognised SCR structure version %d\n", 2027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), scr_struct); 203bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 2047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 2077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 208013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (scr->sda_vsn == SCR_SPEC_VER_2) 209013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Check if Physical Layer Spec v3.0 is supported */ 210013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1); 211bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 212dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 55, 1)) 213dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0xFF; 214dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter else 215dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0x0; 216dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 217f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin if (scr->sda_spec3) 218f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin scr->cmds = UNSTUFF_BITS(resp, 32, 2); 219bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 2207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 2217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 223dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 224dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 225dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterstatic int mmc_read_ssr(struct mmc_card *card) 226dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter{ 227dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter unsigned int au, es, et, eo; 2289288cac05405a7da406097a44721aa4004609b4dWolfram Sang int err, i; 229dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter u32 *ssr; 230dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 231dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!(card->csd.cmdclass & CCC_APP_SPEC)) { 2326606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: card lacks mandatory SD Status function\n", 2336606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(card->host)); 234dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return 0; 235dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 236dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 237dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr = kmalloc(64, GFP_KERNEL); 238dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!ssr) 239dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return -ENOMEM; 240dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 241dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_app_sd_status(card, ssr); 242dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) { 2436606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: problem reading SD Status register\n", 2446606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(card->host)); 245dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = 0; 246dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter goto out; 247dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 248dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 249dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter for (i = 0; i < 16; i++) 250dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr[i] = be32_to_cpu(ssr[i]); 251dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 252dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 253dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * UNSTUFF_BITS only works with four u32s so we have to offset the 254dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * bitfield positions accordingly. 255dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 256dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter au = UNSTUFF_BITS(ssr, 428 - 384, 4); 2579288cac05405a7da406097a44721aa4004609b4dWolfram Sang if (au) { 2589288cac05405a7da406097a44721aa4004609b4dWolfram Sang if (au <= 9 || card->scr.sda_spec3) { 2599288cac05405a7da406097a44721aa4004609b4dWolfram Sang card->ssr.au = sd_au_size[au]; 2609288cac05405a7da406097a44721aa4004609b4dWolfram Sang es = UNSTUFF_BITS(ssr, 408 - 384, 16); 2619288cac05405a7da406097a44721aa4004609b4dWolfram Sang et = UNSTUFF_BITS(ssr, 402 - 384, 6); 2629288cac05405a7da406097a44721aa4004609b4dWolfram Sang if (es && et) { 2639288cac05405a7da406097a44721aa4004609b4dWolfram Sang eo = UNSTUFF_BITS(ssr, 400 - 384, 2); 2649288cac05405a7da406097a44721aa4004609b4dWolfram Sang card->ssr.erase_timeout = (et * 1000) / es; 2659288cac05405a7da406097a44721aa4004609b4dWolfram Sang card->ssr.erase_offset = eo * 1000; 2669288cac05405a7da406097a44721aa4004609b4dWolfram Sang } 2679288cac05405a7da406097a44721aa4004609b4dWolfram Sang } else { 2686606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: SD Status: Invalid Allocation Unit size\n", 2696606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches mmc_hostname(card->host)); 270dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 271dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 272dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterout: 273dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter kfree(ssr); 274dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 275dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter} 276dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 277dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter/* 2781addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Fetches and decodes switch information 2797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 2801addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_read_switch(struct mmc_card *card) 2817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 2827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 2837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u8 *status; 2847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2853373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 28617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2873373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2883373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 2896606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: card lacks mandatory switch function, performance might suffer\n", 2903373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 29117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2923373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman } 2933373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 29417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman status = kmalloc(64, GFP_KERNEL); 2977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (!status) { 298a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 299013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "switch capabilities.\n", 300013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 30117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 3027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 304a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu /* 305a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * Find out the card's support bits with a mode 0 operation. 306a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * The argument does not matter, as the support bits do not 307a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * change with the arguments. 308a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu */ 309a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu err = mmc_sd_switch(card, 0, 0, 0, status); 31017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 311013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 312013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 313013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 314013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 315013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 316adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman goto out; 317adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 3186606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: problem reading Bus Speed modes\n", 3193373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 32017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = 0; 321adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 3227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 325fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5Qiang Liu if (status[13] & SD_MODE_HIGH_SPEED) 326fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5Qiang Liu card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR; 327f2815f68dabbb373fd1c9f0fd4a609d486697c2bSubhash Jadavani 328013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (card->scr.sda_spec3) { 329013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_bus_mode = status[13]; 330a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu /* Driver Strengths supported by the card */ 331013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_drv_type = status[9]; 332013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 3337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3341addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanout: 3351addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman kfree(status); 3361addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3371addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman return err; 3381addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman} 3391addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3401addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman/* 3411addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 3421addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman */ 34371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_switch_hs(struct mmc_card *card) 3441addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman{ 3451addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman int err; 3461addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman u8 *status; 3471addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3483373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 34917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3503373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3513373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 35217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3533373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3541addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 35517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3561addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3571addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (card->sw_caps.hs_max_dtr == 0) 35817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3591addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 36017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 3611addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3621addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman status = kmalloc(64, GFP_KERNEL); 3631addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!status) { 364a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 365facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 36617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 3671addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman } 3681addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 1, 0, 1, status); 37017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if ((status[16] & 0xF) != 1) { 3746606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Problem switching card into high-speed mode!\n", 3757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host)); 37671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 0; 3777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else { 37871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 1; 3797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanout: 3827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman kfree(status); 3837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return err; 3857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 3867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 387d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int sd_select_driver_type(struct mmc_card *card, u8 *status) 388d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 389ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int host_drv_type = SD_DRIVER_TYPE_B; 390ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int card_drv_type = SD_DRIVER_TYPE_B; 391ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int drive_strength; 392d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 393d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 394d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 395d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * If the host doesn't support any of the Driver Types A,C or D, 396ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * or there is no board specific handler then default Driver 397ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * Type B is used. 398d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 399d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->host->caps & (MMC_CAP_DRIVER_TYPE_A | MMC_CAP_DRIVER_TYPE_C 400d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath | MMC_CAP_DRIVER_TYPE_D))) 401d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 402d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 403ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (!card->host->ops->select_drive_strength) 404ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity return 0; 405ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 406ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) 407ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_A; 408ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 409ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) 410ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_C; 411ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 412ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) 413ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_D; 414ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 415ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A) 416ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_A; 417ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 418ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) 419ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_C; 420ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 421ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_D) 422ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_D; 423ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 424ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity /* 425ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * The drive strength that the hardware can support 426ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * depends on the board design. Pass the appropriate 427ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * information and let the hardware specific code 428ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * return what is possible given the options 429ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity */ 4302c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_hold(card->host); 431ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity drive_strength = card->host->ops->select_drive_strength( 432ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card->sw_caps.uhs_max_dtr, 433ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type, card_drv_type); 4342c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_release(card->host); 435d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 436ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity err = mmc_sd_switch(card, 1, 2, drive_strength, status); 437d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 438d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 439d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 440ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if ((status[15] & 0xF) != drive_strength) { 4416606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Problem setting drive strength!\n", 442d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_hostname(card->host)); 443d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 444d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 445d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 446ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity mmc_set_driver_type(card->host, drive_strength); 447d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 448d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 449d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 450d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 45193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavanistatic void sd_update_bus_speed_mode(struct mmc_card *card) 45249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath{ 45349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* 45449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * If the host doesn't support any of the UHS-I modes, fallback on 45549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * default speed. 45649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath */ 4573f8a7fabd60e83eb2fb7add00d353d455c0e7a78Johan Rudholm if (!mmc_host_uhs(card->host)) { 45893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = 0; 45993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani return; 46093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani } 46149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 46249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if ((card->host->caps & MMC_CAP_UHS_SDR104) && 46349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { 46493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR104_BUS_SPEED; 46549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && 46649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { 46793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_DDR50_BUS_SPEED; 46849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 46949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & 47049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR50)) { 47193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR50_BUS_SPEED; 47249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 47349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && 47449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { 47593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR25_BUS_SPEED; 47649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 47749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | 47849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & 47949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR12)) { 48093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR12_BUS_SPEED; 48193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani } 48293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani} 48393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 48493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavanistatic int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) 48593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani{ 48693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani int err; 48793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani unsigned int timing = 0; 48893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 48993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani switch (card->sd_bus_speed) { 49093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR104_BUS_SPEED: 49193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR104; 49293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; 49393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 49493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_DDR50_BUS_SPEED: 49593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_DDR50; 49693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; 49793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 49893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR50_BUS_SPEED: 49993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR50; 50093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; 50193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 50293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR25_BUS_SPEED: 50393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR25; 50493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; 50593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 50693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR12_BUS_SPEED: 50793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR12; 50893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; 50993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 51093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani default: 51193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani return 0; 51249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 51349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 51493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status); 51549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 51649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return err; 51749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 51893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani if ((status[16] & 0xF) != card->sd_bus_speed) 5196606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Problem setting bus speed mode!\n", 52049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_hostname(card->host)); 52149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath else { 52249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_timing(card->host, timing); 52349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); 52449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 52549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 52649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return 0; 52749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath} 52849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 52955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu/* Get host's max current setting at its current voltage */ 53055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lustatic u32 sd_get_host_max_current(struct mmc_host *host) 53155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu{ 53255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu u32 voltage, max_current; 53355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 53455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu voltage = 1 << host->ios.vdd; 53555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu switch (voltage) { 53655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_165_195: 53755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = host->max_current_180; 53855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu break; 53955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_29_30: 54055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_30_31: 54155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = host->max_current_300; 54255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu break; 54355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_32_33: 54455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_33_34: 54555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = host->max_current_330; 54655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu break; 54755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu default: 54855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = 0; 54955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu } 55055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 55155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu return max_current; 55255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu} 55355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 5545371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nathstatic int sd_set_current_limit(struct mmc_card *card, u8 *status) 5555371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath{ 5560aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity int current_limit = SD_SET_CURRENT_NO_CHANGE; 5575371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath int err; 55855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu u32 max_current; 5595371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5605371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath /* 5615371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * Current limit switch is only defined for SDR50, SDR104, and DDR50 5620aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity * bus speed modes. For other bus speed modes, we do not change the 5630aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity * current limit. 56455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu */ 56555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) && 56655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu (card->sd_bus_speed != UHS_SDR104_BUS_SPEED) && 56755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu (card->sd_bus_speed != UHS_DDR50_BUS_SPEED)) 56855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu return 0; 56955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 57055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu /* 57155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * Host has different current capabilities when operating at 57255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * different voltages, so find out its max current first. 57355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu */ 57455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = sd_get_host_max_current(card->host); 57555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 57655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu /* 577a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * We only check host's capability here, if we set a limit that is 578a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * higher than the card's maximum current, the card will be using its 579a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * maximum current, e.g. if the card's maximum current is 300ma, and 580a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * when we set current limit to 200ma, the card will draw 200ma, and 581a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * when we set current limit to 400/600/800ma, the card will draw its 582a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * maximum 300ma from the host. 5835371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath */ 58455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu if (max_current >= 800) 58555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_800; 58655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu else if (max_current >= 600) 58755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_600; 58855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu else if (max_current >= 400) 58955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_400; 59055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu else if (max_current >= 200) 59155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_200; 5925371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5930aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity if (current_limit != SD_SET_CURRENT_NO_CHANGE) { 5940aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity err = mmc_sd_switch(card, 1, 3, current_limit, status); 5950aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity if (err) 5960aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity return err; 5975371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5980aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity if (((status[15] >> 4) & 0x0F) != current_limit) 5996606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Problem setting current limit!\n", 6000aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity mmc_hostname(card->host)); 6015371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 6020aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity } 603a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu 6045371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath return 0; 6055371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath} 6065371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 607d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath/* 608d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * UHS-I specific initialization procedure 609d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 610d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int mmc_sd_init_uhs_card(struct mmc_card *card) 611d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 612d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 613d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u8 *status; 614d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 615d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!card->scr.sda_spec3) 616d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 617d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 618d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->csd.cmdclass & CCC_SWITCH)) 619d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 620d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 621d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath status = kmalloc(64, GFP_KERNEL); 622d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!status) { 623a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 624d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath "switch capabilities.\n", mmc_hostname(card->host)); 625d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return -ENOMEM; 626d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 627d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 628d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set 4-bit bus width */ 629d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((card->host->caps & MMC_CAP_4_BIT_DATA) && 630d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 631d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 632d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 633d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto out; 634d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 635d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); 636d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 637d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 63893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* 63993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani * Select the bus speed mode depending on host 64093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani * and card capability. 64193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani */ 64293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani sd_update_bus_speed_mode(card); 64393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 644d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set the driver strength for the card */ 645d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = sd_select_driver_type(card, status); 64649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 64749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath goto out; 64849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 64993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* Set current limit for the card */ 65093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = sd_set_current_limit(card, status); 6515371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (err) 6525371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath goto out; 6535371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 65493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* Set bus speed mode of the card */ 65593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = sd_set_bus_speed_mode(card, status); 656b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (err) 657b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 658b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 659810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt /* 660810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and 661810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. 662810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt */ 663810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning && 664810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt (card->sd_bus_speed == UHS_SDR50_BUS_SPEED || 665810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) { 6662c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_hold(card->host); 667a4924c71aa43d4f8a3f342b1f71788349472e684Girish K S err = card->host->ops->execute_tuning(card->host, 668a4924c71aa43d4f8a3f342b1f71788349472e684Girish K S MMC_SEND_TUNING_BLOCK); 6692c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_release(card->host); 6702c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma } 671d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 672d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathout: 673d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath kfree(status); 674d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 675d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 676d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 677d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 67851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 67951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_cid[2], card->raw_cid[3]); 68051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 68151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_csd[2], card->raw_csd[3]); 68251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); 68351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 684dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 685dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 68651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 68751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 68851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 68951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 69051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 69151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 69251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 69351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 69451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute *sd_std_attrs[] = { 69551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_cid.attr, 69651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_csd.attr, 69751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_scr.attr, 69851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_date.attr, 699dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_erase_size.attr, 700dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_preferred_erase_size.attr, 70151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_fwrev.attr, 70251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_hwrev.attr, 70351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_manfid.attr, 70451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_name.attr, 70551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_oemid.attr, 70651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_serial.attr, 70751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 70851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 709d1e58212caa4fdd95dfb003ba6e90aa0c9c1ac03Axel LinATTRIBUTE_GROUPS(sd_std); 71051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 71171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstruct device_type sd_type = { 712d1e58212caa4fdd95dfb003ba6e90aa0c9c1ac03Axel Lin .groups = sd_std_groups, 71351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 71451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 7157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 71671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CID from card. 7177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 718d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathint mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) 7197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 7207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 72155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu u32 max_current; 7220797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm int retries = 10; 7236904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson u32 pocr = ocr; 7240797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm 7250797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholmtry_again: 7260797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm if (!retries) { 7270797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm ocr &= ~SD_OCR_S18R; 7286606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); 7290797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm } 7307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 7327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Since we're changing the OCR value, we seem to 7337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * need to tell some cards to go back to the idle 7347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * state. We wait 1ms to give cards time to 7357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * respond. 7367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_go_idle(host); 7387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 7407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 7417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * compliant card and we should set bit 30 7427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * of the ocr to indicate that we can handle 7437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * block-addressed SDHC cards. 7447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_if_cond(host, ocr); 74617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (!err) 747f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_CCS; 7487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 749f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 750f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If the host supports one of UHS-I modes, request the card 7510797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm * to switch to 1.8V signaling level. If the card has failed 7520797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm * repeatedly to switch however, skip this. 753f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 7540797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm if (retries && mmc_host_uhs(host)) 755f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_S18R; 756f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 75755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu /* 75855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * If the host can supply more than 150mA at current voltage, 75955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * XPC should be set to 1. 76055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu */ 76155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = sd_get_host_max_current(host); 76255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu if (max_current > 150) 763f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_XPC; 764f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 765d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_send_app_op_cond(host, ocr, rocr); 76617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 76771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 7687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 769f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 770f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * In case CCS and S18A in the response is set, start Signal Voltage 771f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Switch procedure. SPI mode doesn't support CMD11. 772f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 773d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!mmc_host_is_spi(host) && rocr && 774d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ((*rocr & 0x41000000) == 0x41000000)) { 7750f791fdad82a02af013e4fc8c385dc690080c366Ulf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, 7766904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson pocr); 7770797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm if (err == -EAGAIN) { 7780797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm retries--; 7790797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm goto try_again; 7800797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm } else if (err) { 7810797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm retries = 0; 782f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath goto try_again; 783f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 784f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 785f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 786af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) 787af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_cid(host, cid); 788af51715079e7fb6b290e1881d63d815dc4de5011David Brownell else 789af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_all_send_cid(host, cid); 79071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 79271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 79371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card) 79571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 79671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 79771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 79971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CSD from card. 80071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 80171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_send_csd(card, card->raw_csd); 80217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 80371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 8047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 80571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_csd(card); 80671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 80771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 80871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 80971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 81071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 81171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, 81371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw bool reinit) 81471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 81571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 8169faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 8179faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat int retries; 8189faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat#endif 81971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 82071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 82171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 82271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch SCR from card. 82371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 82471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_app_send_scr(card, card->raw_scr); 82571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 82671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 82771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 82871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_scr(card); 82971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 83071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 83171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 83271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 833dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 834dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 835dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_read_ssr(card); 836dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) 837dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 838dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 839dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* Erase init depends on CSD and SSR */ 840dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter mmc_init_erase(card); 841dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 842dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 84371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch switch information from card. 84471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 8459faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 8469faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat for (retries = 1; retries <= 3; retries++) { 8479faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat err = mmc_read_switch(card); 8489faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat if (!err) { 8499faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat if (retries > 1) { 8509faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat printk(KERN_WARNING 8519faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat "%s: recovered\n", 8529faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat mmc_hostname(host)); 8539faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat } 8549faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat break; 8559faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat } else { 8569faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat printk(KERN_WARNING 8579faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat "%s: read switch failed (attempt %d)\n", 8589faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat mmc_hostname(host), retries); 8599faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat } 8609faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat } 8619faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat#else 86271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_read_switch(card); 8639faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat#endif 8649faee2387ae0ba36f1db00b55337990bbc89ca3eSan Mehat 86571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 86671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 86771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 86871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 86971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 87071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * For SPI, enable CRC as appropriate. 87171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * This CRC enable is located AFTER the reading of the 87271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * card registers because some SDHC cards are not able 87371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * to provide valid CRCs for non-512-byte blocks. 87471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 87571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_host_is_spi(host)) { 87671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_spi_set_crc(host, use_spi_crc); 87771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 87871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 87971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 88071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 88171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 88271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Check if read-only switch is active. 88371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 88471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 88571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int ro = -1; 88671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 8872c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma if (host->ops->get_ro) { 8882c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_hold(card->host); 88971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw ro = host->ops->get_ro(host); 8902c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_release(card->host); 8912c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma } 89271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 89371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (ro < 0) { 8946606110d89aefcb21b9e70adfe064987cbd8393aJoe Perches pr_warn("%s: host does not support reading read-only switch, assuming write-enable\n", 89571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_hostname(host)); 89671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (ro > 0) { 89771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_readonly(card); 898adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 89971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 90071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 90171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 90271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 90371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 90471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawunsigned mmc_sd_get_max_clock(struct mmc_card *card) 90571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 90671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw unsigned max_dtr = (unsigned int)-1; 90771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 908cdc991790c51c693d0c347a5286af017826a5d01Seungwon Jeon if (mmc_card_hs(card)) { 90971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (max_dtr > card->sw_caps.hs_max_dtr) 91071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->sw_caps.hs_max_dtr; 91171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (max_dtr > card->csd.max_dtr) { 91271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->csd.max_dtr; 91371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 91471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 91571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return max_dtr; 91671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 91771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 91871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw/* 91971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Handle the detection and initialisation of a card. 92071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * 92171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * In the case of a resume, "oldcard" will contain the card 92271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * we're trying to reinitialise. 92371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 92471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstatic int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 92571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *oldcard) 92671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 92771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *card; 92871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 92971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw u32 cid[4]; 930d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u32 rocr = 0; 93171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 93271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw BUG_ON(!host); 93371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw WARN_ON(!host->claimed); 93471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 935d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_get_cid(host, ocr, cid, &rocr); 93671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 93771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 93871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 93971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (oldcard) { 94071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) 94171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return -ENOENT; 9427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = oldcard; 9446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } else { 9456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 9466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Allocate card structure. 9476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 94851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card = mmc_alloc_card(host, &sd_type); 94971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (IS_ERR(card)) 95071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return PTR_ERR(card); 9516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9526904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson card->ocr = ocr; 9536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card->type = MMC_TYPE_SD; 9546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 9556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 958af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * For native busses: get card RCA and quit open drain mode. 9597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 960af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 961af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_relative_addr(host, &card->rca); 962af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 9637fca96758e977497c67a424006c60aaf2d3db212Wei WANG goto free_card; 964af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 9657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 96771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_get_csd(host, card); 96817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 9697fca96758e977497c67a424006c60aaf2d3db212Wei WANG goto free_card; 970bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 9716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_decode_cid(card); 9726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 9753d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer * handling only for cards supporting DSR and hosts requesting 9763d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer * DSR configuration 9773d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer */ 9783d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 9793d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer mmc_set_dsr(host); 9803d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer 9813d705d14fe4c72be83bae1610680e209ee226b9dSascha Hauer /* 9826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Select card, as all following commands rely on that. 9837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 984af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 985af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_select_card(card); 986af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 9877fca96758e977497c67a424006c60aaf2d3db212Wei WANG goto free_card; 9886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9891addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 99071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_setup_card(host, card, oldcard != NULL); 99171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 99271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw goto free_card; 9939d9f25c036dd584db175552a7d162403d3ab54b3Wolfgang Muees 994d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Initialization sequence for UHS-I cards */ 995d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (rocr & SD_ROCR_S18A) { 996d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_init_uhs_card(card); 99717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 9987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 999d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } else { 1000d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1001d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Attempt to change to high-speed (if supported) 1002d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1003d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_switch_hs(card); 1004d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err > 0) 1005cdc991790c51c693d0c347a5286af017826a5d01Seungwon Jeon mmc_set_timing(card->host, MMC_TIMING_SD_HS); 1006d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (err) 1007d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 1008d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1009d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1010d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Set bus speed. 1011d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1012d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_clock(host, mmc_sd_get_max_clock(card)); 10137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1014d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1015d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Switch to wider bus (if supported). 1016d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1017d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((host->caps & MMC_CAP_4_BIT_DATA) && 1018d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 1019d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 1020d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 1021d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 1022d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1023d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 1024d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 10257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 10267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 102771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw host->card = card; 102817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 10296abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanfree_card: 10316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 10326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(card); 10336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1034adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 10356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10386abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Host is being removed. Free up the current card. 10396abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_remove(struct mmc_host *host) 10416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 10466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = NULL; 10476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 1050d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter * Card detection - card is alive. 1051d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter */ 1052d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunterstatic int mmc_sd_alive(struct mmc_host *host) 1053d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter{ 1054d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter return mmc_send_status(host->card, NULL); 1055d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter} 1056d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter 1057d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter/* 10586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Card detection callback from host. 10596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_detect(struct mmc_host *host) 10616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 106212e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat int err = 0; 106312e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 106412e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat int retries = 5; 106512e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#endif 10666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1070e94cfef698aae6b209d8918dd319312e4b02118dUlf Hansson mmc_get_card(host->card); 10716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 10736abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Just check if our card has been removed. 10746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 107512e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 107612e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat while(retries) { 107712e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat err = mmc_send_status(host->card, NULL); 107812e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat if (err) { 107912e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat retries--; 108012e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat udelay(5); 108112e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat continue; 108212e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat } 108312e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat break; 108412e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat } 108512e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat if (!retries) { 108612e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n", 108712e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat __func__, mmc_hostname(host), err); 108812e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat } 108912e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#else 1090d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter err = _mmc_detect_card_removed(host); 109112e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#endif 10927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1093e94cfef698aae6b209d8918dd319312e4b02118dUlf Hansson mmc_put_card(host->card); 10947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 109517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 10964101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 10976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 11007f7e4129c23f0419257184dff6fec89d2d5a8964Ulf Hansson mmc_power_off(host); 11016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 11026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 11036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 11046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11050cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int _mmc_sd_suspend(struct mmc_host *host) 11066abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 110785e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung int err = 0; 110885e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung 11096abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 11106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 11116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11126abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 11139ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 11149ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson if (mmc_card_suspended(host->card)) 11159ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson goto out; 11169ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 1117af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) 111885e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung err = mmc_deselect_cards(host); 1119cdc991790c51c693d0c347a5286af017826a5d01Seungwon Jeon 11209ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson if (!err) { 112174590263384e5d4601de7f0ee2790477578829eaUlf Hansson mmc_power_off(host); 11229ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_card_set_suspended(host->card); 11239ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson } 112495cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre 11259ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hanssonout: 11269ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_release_host(host); 112785e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung return err; 11286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 11296abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 11310cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson * Callback for suspend 11320cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson */ 11330cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int mmc_sd_suspend(struct mmc_host *host) 11340cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson{ 11350cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson int err; 11360cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11370cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson err = _mmc_sd_suspend(host); 11380cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson if (!err) { 11390cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson pm_runtime_disable(&host->card->dev); 11400cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson pm_runtime_set_suspended(&host->card->dev); 11410cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson } 11420cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11430cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson return err; 11440cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson} 11450cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11460cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson/* 11476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * This function tries to determine if the same card is still present 11486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * and, if so, restore all state to it. 11496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 11500cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int _mmc_sd_resume(struct mmc_host *host) 11516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 11529ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson int err = 0; 115365a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 115465a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat int retries; 115565a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat#endif 11566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11576abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 11586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 11596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 11619ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 11629ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson if (!mmc_card_suspended(host->card)) 11639ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson goto out; 11649ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 11656904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson mmc_power_up(host, host->card->ocr); 116665a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 116765a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat retries = 5; 116865a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat while (retries) { 116965a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat err = mmc_sd_init_card(host, host->card->ocr, host->card); 117065a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat 117165a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat if (err) { 117265a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat printk(KERN_ERR "%s: Re-init card rc = %d (retries = %d)\n", 117365a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat mmc_hostname(host), err, retries); 117465a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat mdelay(5); 117565a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat retries--; 117665a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat continue; 117765a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat } 117865a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat break; 117965a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat } 118065a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat#else 11816904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson err = mmc_sd_init_card(host, host->card->ocr, host->card); 118265a213ff7fcec3c901d1aa929008d98ed35ed866San Mehat#endif 11839ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_card_clr_suspended(host->card); 11842986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 11859ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hanssonout: 11869ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_release_host(host); 118795cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return err; 11886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 11896abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1190c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson/* 11910cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson * Callback for resume 11920cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson */ 11930cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int mmc_sd_resume(struct mmc_host *host) 11940cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson{ 11954d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson int err = 0; 11960cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11974d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 11984d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson err = _mmc_sd_resume(host); 11994d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson pm_runtime_set_active(&host->card->dev); 12004d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson pm_runtime_mark_last_busy(&host->card->dev); 12014d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson } 12020cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson pm_runtime_enable(&host->card->dev); 12030cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 12040cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson return err; 12050cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson} 12060cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 12070cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson/* 1208c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson * Callback for runtime_suspend. 1209c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson */ 1210c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hanssonstatic int mmc_sd_runtime_suspend(struct mmc_host *host) 1211c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson{ 1212c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson int err; 1213c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1214c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1215c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return 0; 1216c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 12170cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson err = _mmc_sd_suspend(host); 12180cc81a8c6442e43618ff245948bfaa14fdf7938bUlf Hansson if (err) 1219c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1220c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson mmc_hostname(host), err); 1221c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1222c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return err; 1223c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson} 1224c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1225c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson/* 1226c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson * Callback for runtime_resume. 1227c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson */ 1228c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hanssonstatic int mmc_sd_runtime_resume(struct mmc_host *host) 1229c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson{ 1230c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson int err; 1231c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 12324d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1233c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return 0; 1234c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 12350cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson err = _mmc_sd_resume(host); 1236c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson if (err) 1237c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1238c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson mmc_hostname(host), err); 1239c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1240c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return 0; 1241c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson} 1242c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 124312ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohenstatic int mmc_sd_power_restore(struct mmc_host *host) 1244eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter{ 124512ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen int ret; 124612ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 1247eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_claim_host(host); 12486904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson ret = mmc_sd_init_card(host, host->card->ocr, host->card); 1249eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_release_host(host); 125012ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 125112ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen return ret; 1252eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter} 1253eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter 12546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic const struct mmc_bus_ops mmc_sd_ops = { 12556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .remove = mmc_sd_remove, 12566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .detect = mmc_sd_detect, 1257c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson .runtime_suspend = mmc_sd_runtime_suspend, 1258c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson .runtime_resume = mmc_sd_runtime_resume, 12596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .suspend = mmc_sd_suspend, 12606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .resume = mmc_sd_resume, 1261eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 1262d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter .alive = mmc_sd_alive, 12635992e78697484d8f58b749f87a06f89f4ba40a47Ulf Hansson .shutdown = mmc_sd_suspend, 12646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman}; 12656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 12676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Starting point for SD card init. 12686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1269807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Rossint mmc_attach_sd(struct mmc_host *host) 12706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 12716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 12726904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson u32 ocr, rocr; 127312e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 127412e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat int retries; 127512e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#endif 12766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 1278d84075c8aed771d47d7ac6e96b098559da361c25Pierre Ossman WARN_ON(!host->claimed); 12796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1280807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross err = mmc_send_app_op_cond(host, 0, &ocr); 1281807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross if (err) 1282807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross return err; 1283807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross 12842501c9179dff2add6aadd3898cd729e94e777d3aUlf Hansson mmc_attach_bus(host, &mmc_sd_ops); 12858f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 12868f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai host->ocr_avail = host->ocr_avail_sd; 12876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 1289af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * We need to get OCR a different way for SPI. 1290af51715079e7fb6b290e1881d63d815dc4de5011David Brownell */ 1291af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) { 1292af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_go_idle(host); 1293af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 1294af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_spi_read_ocr(host, 0, &ocr); 1295af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 1296af51715079e7fb6b290e1881d63d815dc4de5011David Brownell goto err; 1297af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 1298af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 12996904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson rocr = mmc_select_voltage(host, ocr); 13006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 13016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 13026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Can we support the voltage(s) of the card(s)? 13036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 13046904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson if (!rocr) { 1305109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman err = -EINVAL; 13066abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 1307109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman } 13086abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 13096abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 13106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Detect and init the card. 13116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 131212e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#ifdef CONFIG_MMC_PARANOID_SD_INIT 131312e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat retries = 5; 131412e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat while (retries) { 131512e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat err = mmc_sd_init_card(host, rocr, NULL); 131612e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat if (err) { 131712e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat retries--; 131812e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat continue; 131912e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat } 132012e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat break; 132112e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat } 132212e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat 132312e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat if (!retries) { 132412e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n", 132512e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat mmc_hostname(host), err); 132612e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat goto err; 132712e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat } 132812e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#else 13296904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson err = mmc_sd_init_card(host, rocr, NULL); 133017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 13316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 133212e626dd0ef04c2e43a193b623a914745e1fd1e9San Mehat#endif 13336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 13346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 13354101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman err = mmc_add_card(host->card); 1336807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_claim_host(host); 13377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (err) 13382986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman goto remove_card; 13397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 13407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return 0; 13417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 13422986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossmanremove_card: 1343807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_release_host(host); 13446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 13457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman host->card = NULL; 13462986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 13477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanerr: 13487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_detach_bus(host); 13497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1350a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: error %d whilst initialising SD card\n", 1351109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman mmc_hostname(host), err); 1352109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman 1353adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 13547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 13557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1356