sd.c revision 4d22378221bd0ed69c2e99408d31c108d72aeb80
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> 145a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 150205a904df57bf2ed79571fe097b99d2940659b1Paul Gortmaker#include <linux/stat.h> 160cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson#include <linux/pm_runtime.h> 177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/host.h> 197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/card.h> 207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/mmc.h> 213373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman#include <linux/mmc/sd.h> 227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "core.h" 244101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman#include "bus.h" 257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "mmc_ops.h" 26ce1014965ae2538e7447b19879bd0e8109690b79Mark Brown#include "sd.h" 277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sd_ops.h" 287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tran_exp[] = { 307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10000, 100000, 1000000, 10000000, 317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 0, 0, 0 327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned char tran_mant[] = { 357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_exp[] = { 407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_mant[] = { 447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#define UNSTUFF_BITS(resp,start,size) \ 497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman ({ \ 507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __size = size; \ 517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __off = 3 - ((start) / 32); \ 537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __shft = (start) & 31; \ 547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 __res; \ 557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman \ 567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res = resp[__off] >> __shft; \ 577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (__size + __shft > 32) \ 587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res & __mask; \ 607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman }) 617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 6571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_decode_cid(struct mmc_card *card) 667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_cid; 687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman memset(&card->cid, 0, sizeof(struct mmc_cid)); 707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD doesn't currently have a version field so we will 737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * have to assume we can parse this. 747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year += 2000; /* SD cards year offset */ 897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 128-bit response, decode to our card CSD structure. 937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 94bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_csd(struct mmc_card *card) 957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_csd *csd = &card->csd; 977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int e, m, csd_struct; 987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_csd; 997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 1017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman switch (csd_struct) { 1037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 0: 1047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << (e + 2); 1177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 125dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 126dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 46, 1)) { 127dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 128dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else if (csd->write_blkbits >= 9) { 129dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; 130dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 131dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 1327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 1: 1347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 1353a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath * This is a block-addressed SDHC or SDXC card. Most 1367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * interesting fields are unused and have fixed 1377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * values. To avoid getting tripped by buggy cards, 1387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * we assume those fixed values ourselves. 1397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_blockaddr(card); 1417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = 0; /* Unused */ 1437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = 0; /* Unused */ 1447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1493a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath csd->c_size = UNSTUFF_BITS(resp, 48, 22); 1503a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 1513a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* SDXC cards have a minimum C_SIZE of 0x00FFFF */ 1523a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath if (csd->c_size >= 0xFFFF) 1533a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath mmc_card_set_ext_capacity(card); 1547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << 10; 1577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = 9; 1597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = 0; 1607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = 0; 1617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = 0; 1627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = 4; /* Unused */ 1637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = 9; 1647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = 0; 165dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 1667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman default: 168a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: unrecognised CSD structure version %d\n", 1697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), csd_struct); 170bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 172bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 173dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erase_size = csd->erase_size; 174dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 175bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 181bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_scr(struct mmc_card *card) 1827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct sd_scr *scr = &card->scr; 1847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int scr_struct; 1857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 resp[4]; 1867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[3] = card->raw_scr[1]; 1887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[2] = card->raw_scr[0]; 1897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 1917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (scr_struct != 0) { 192a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: unrecognised SCR structure version %d\n", 1937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), scr_struct); 194bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 1967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 1987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 199013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (scr->sda_vsn == SCR_SPEC_VER_2) 200013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Check if Physical Layer Spec v3.0 is supported */ 201013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1); 202bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 203dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 55, 1)) 204dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0xFF; 205dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter else 206dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0x0; 207dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 208f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin if (scr->sda_spec3) 209f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin scr->cmds = UNSTUFF_BITS(resp, 32, 2); 210bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 2117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 2127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 214dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 215dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 216dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterstatic int mmc_read_ssr(struct mmc_card *card) 217dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter{ 218dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter unsigned int au, es, et, eo; 21977776fd0a4cc541b9a528eacc1d31ca47eb1ae7aJaehoon Chung int err, i, max_au; 220dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter u32 *ssr; 221dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 222dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!(card->csd.cmdclass & CCC_APP_SPEC)) { 223a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: card lacks mandatory SD Status " 224dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "function.\n", mmc_hostname(card->host)); 225dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return 0; 226dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 227dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 228dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr = kmalloc(64, GFP_KERNEL); 229dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!ssr) 230dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return -ENOMEM; 231dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 232dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_app_sd_status(card, ssr); 233dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) { 234a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: problem reading SD Status " 235dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "register.\n", mmc_hostname(card->host)); 236dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = 0; 237dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter goto out; 238dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 239dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 240dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter for (i = 0; i < 16; i++) 241dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr[i] = be32_to_cpu(ssr[i]); 242dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 24377776fd0a4cc541b9a528eacc1d31ca47eb1ae7aJaehoon Chung /* SD3.0 increases max AU size to 64MB (0xF) from 4MB (0x9) */ 24477776fd0a4cc541b9a528eacc1d31ca47eb1ae7aJaehoon Chung max_au = card->scr.sda_spec3 ? 0xF : 0x9; 24577776fd0a4cc541b9a528eacc1d31ca47eb1ae7aJaehoon Chung 246dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 247dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * UNSTUFF_BITS only works with four u32s so we have to offset the 248dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * bitfield positions accordingly. 249dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 250dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter au = UNSTUFF_BITS(ssr, 428 - 384, 4); 25177776fd0a4cc541b9a528eacc1d31ca47eb1ae7aJaehoon Chung if (au > 0 && au <= max_au) { 252dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.au = 1 << (au + 4); 253dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter es = UNSTUFF_BITS(ssr, 408 - 384, 16); 254dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter et = UNSTUFF_BITS(ssr, 402 - 384, 6); 255dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter eo = UNSTUFF_BITS(ssr, 400 - 384, 2); 256dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (es && et) { 257dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_timeout = (et * 1000) / es; 258dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_offset = eo * 1000; 259dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 260dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else { 261a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: SD Status: Invalid Allocation Unit " 262dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "size.\n", mmc_hostname(card->host)); 263dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 264dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterout: 265dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter kfree(ssr); 266dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 267dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter} 268dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 269dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter/* 2701addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Fetches and decodes switch information 2717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 2721addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_read_switch(struct mmc_card *card) 2737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 2747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 2757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u8 *status; 2767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2773373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 27817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2793373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2803373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 281a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: card lacks mandatory switch " 2823373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "function, performance might suffer.\n", 2833373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 28417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2853373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman } 2863373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 28717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman status = kmalloc(64, GFP_KERNEL); 2907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (!status) { 291a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 292013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "switch capabilities.\n", 293013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 29417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 2957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 297a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu /* 298a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * Find out the card's support bits with a mode 0 operation. 299a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * The argument does not matter, as the support bits do not 300a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * change with the arguments. 301a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu */ 302a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu err = mmc_sd_switch(card, 0, 0, 0, status); 30317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 304013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 305013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 306013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 307013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 308013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 309adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman goto out; 310adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 311a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: problem reading Bus Speed modes.\n", 3123373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 31317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = 0; 314adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 3157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 318fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5Qiang Liu if (status[13] & SD_MODE_HIGH_SPEED) 319fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5Qiang Liu card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR; 320f2815f68dabbb373fd1c9f0fd4a609d486697c2bSubhash Jadavani 321013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (card->scr.sda_spec3) { 322013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_bus_mode = status[13]; 323a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu /* Driver Strengths supported by the card */ 324013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_drv_type = status[9]; 325013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 3267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3271addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanout: 3281addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman kfree(status); 3291addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3301addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman return err; 3311addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman} 3321addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3331addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman/* 3341addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 3351addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman */ 33671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_switch_hs(struct mmc_card *card) 3371addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman{ 3381addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman int err; 3391addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman u8 *status; 3401addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3413373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 34217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3433373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3443373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 34517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3463373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3471addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 34817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3491addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3501addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (card->sw_caps.hs_max_dtr == 0) 35117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3521addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 35317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 3541addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3551addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman status = kmalloc(64, GFP_KERNEL); 3561addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!status) { 357a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 358facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 35917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 3601addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman } 3611addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 1, 0, 1, status); 36317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if ((status[16] & 0xF) != 1) { 367a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem switching card " 3687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman "into high-speed mode!\n", 3697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host)); 37071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 0; 3717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else { 37271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 1; 3737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanout: 3767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman kfree(status); 3777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return err; 3797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 3807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 381d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int sd_select_driver_type(struct mmc_card *card, u8 *status) 382d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 383ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int host_drv_type = SD_DRIVER_TYPE_B; 384ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int card_drv_type = SD_DRIVER_TYPE_B; 385ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int drive_strength; 386d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 387d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 388d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 389d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * If the host doesn't support any of the Driver Types A,C or D, 390ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * or there is no board specific handler then default Driver 391ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * Type B is used. 392d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 393d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->host->caps & (MMC_CAP_DRIVER_TYPE_A | MMC_CAP_DRIVER_TYPE_C 394d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath | MMC_CAP_DRIVER_TYPE_D))) 395d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 396d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 397ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (!card->host->ops->select_drive_strength) 398ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity return 0; 399ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 400ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) 401ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_A; 402ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 403ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) 404ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_C; 405ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 406ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) 407ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_D; 408ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 409ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A) 410ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_A; 411ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 412ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) 413ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_C; 414ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 415ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_D) 416ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_D; 417ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 418ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity /* 419ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * The drive strength that the hardware can support 420ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * depends on the board design. Pass the appropriate 421ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * information and let the hardware specific code 422ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * return what is possible given the options 423ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity */ 4242c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_hold(card->host); 425ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity drive_strength = card->host->ops->select_drive_strength( 426ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card->sw_caps.uhs_max_dtr, 427ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type, card_drv_type); 4282c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_release(card->host); 429d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 430ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity err = mmc_sd_switch(card, 1, 2, drive_strength, status); 431d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 432d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 433d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 434ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if ((status[15] & 0xF) != drive_strength) { 435a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem setting drive strength!\n", 436d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_hostname(card->host)); 437d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 438d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 439d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 440ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity mmc_set_driver_type(card->host, drive_strength); 441d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 442d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 443d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 444d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 44593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavanistatic void sd_update_bus_speed_mode(struct mmc_card *card) 44649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath{ 44749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* 44849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * If the host doesn't support any of the UHS-I modes, fallback on 44949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * default speed. 45049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath */ 4513f8a7fabd60e83eb2fb7add00d353d455c0e7a78Johan Rudholm if (!mmc_host_uhs(card->host)) { 45293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = 0; 45393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani return; 45493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani } 45549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 45649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if ((card->host->caps & MMC_CAP_UHS_SDR104) && 45749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { 45893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR104_BUS_SPEED; 45949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && 46049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { 46193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_DDR50_BUS_SPEED; 46249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 46349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & 46449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR50)) { 46593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR50_BUS_SPEED; 46649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 46749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && 46849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { 46993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR25_BUS_SPEED; 47049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 47149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | 47249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & 47349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR12)) { 47493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR12_BUS_SPEED; 47593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani } 47693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani} 47793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 47893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavanistatic int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) 47993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani{ 48093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani int err; 48193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani unsigned int timing = 0; 48293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 48393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani switch (card->sd_bus_speed) { 48493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR104_BUS_SPEED: 48593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR104; 48693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; 48793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 48893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_DDR50_BUS_SPEED: 48993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_DDR50; 49093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; 49193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 49293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR50_BUS_SPEED: 49393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR50; 49493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; 49593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 49693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR25_BUS_SPEED: 49793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR25; 49893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; 49993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 50093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR12_BUS_SPEED: 50193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR12; 50293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; 50393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 50493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani default: 50593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani return 0; 50649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 50749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 50893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status); 50949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 51049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return err; 51149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 51293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani if ((status[16] & 0xF) != card->sd_bus_speed) 513a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem setting bus speed mode!\n", 51449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_hostname(card->host)); 51549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath else { 51649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_timing(card->host, timing); 51749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); 51849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 51949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 52049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return 0; 52149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath} 52249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 52355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu/* Get host's max current setting at its current voltage */ 52455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lustatic u32 sd_get_host_max_current(struct mmc_host *host) 52555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu{ 52655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu u32 voltage, max_current; 52755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 52855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu voltage = 1 << host->ios.vdd; 52955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu switch (voltage) { 53055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_165_195: 53155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = host->max_current_180; 53255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu break; 53355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_29_30: 53455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_30_31: 53555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = host->max_current_300; 53655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu break; 53755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_32_33: 53855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu case MMC_VDD_33_34: 53955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = host->max_current_330; 54055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu break; 54155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu default: 54255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = 0; 54355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu } 54455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 54555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu return max_current; 54655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu} 54755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 5485371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nathstatic int sd_set_current_limit(struct mmc_card *card, u8 *status) 5495371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath{ 5500aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity int current_limit = SD_SET_CURRENT_NO_CHANGE; 5515371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath int err; 55255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu u32 max_current; 5535371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5545371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath /* 5555371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * Current limit switch is only defined for SDR50, SDR104, and DDR50 5560aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity * bus speed modes. For other bus speed modes, we do not change the 5570aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity * current limit. 55855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu */ 55955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) && 56055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu (card->sd_bus_speed != UHS_SDR104_BUS_SPEED) && 56155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu (card->sd_bus_speed != UHS_DDR50_BUS_SPEED)) 56255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu return 0; 56355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 56455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu /* 56555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * Host has different current capabilities when operating at 56655c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * different voltages, so find out its max current first. 56755c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu */ 56855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = sd_get_host_max_current(card->host); 56955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu 57055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu /* 571a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * We only check host's capability here, if we set a limit that is 572a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * higher than the card's maximum current, the card will be using its 573a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * maximum current, e.g. if the card's maximum current is 300ma, and 574a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * when we set current limit to 200ma, the card will draw 200ma, and 575a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * when we set current limit to 400/600/800ma, the card will draw its 576a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu * maximum 300ma from the host. 5775371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath */ 57855c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu if (max_current >= 800) 57955c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_800; 58055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu else if (max_current >= 600) 58155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_600; 58255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu else if (max_current >= 400) 58355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_400; 58455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu else if (max_current >= 200) 58555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu current_limit = SD_SET_CURRENT_LIMIT_200; 5865371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5870aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity if (current_limit != SD_SET_CURRENT_NO_CHANGE) { 5880aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity err = mmc_sd_switch(card, 1, 3, current_limit, status); 5890aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity if (err) 5900aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity return err; 5915371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5920aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity if (((status[15] >> 4) & 0x0F) != current_limit) 5930aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity pr_warning("%s: Problem setting current limit!\n", 5940aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity mmc_hostname(card->host)); 5955371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5960aa6770000bafa65c17cf44b6619d328d4fc79b3Philip Rakity } 597a39ca6ae0a08994a59d017a445939e164bc77fd5Aaron Lu 5985371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath return 0; 5995371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath} 6005371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 601d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath/* 602d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * UHS-I specific initialization procedure 603d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 604d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int mmc_sd_init_uhs_card(struct mmc_card *card) 605d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 606d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 607d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u8 *status; 608d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 609d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!card->scr.sda_spec3) 610d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 611d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 612d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->csd.cmdclass & CCC_SWITCH)) 613d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 614d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 615d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath status = kmalloc(64, GFP_KERNEL); 616d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!status) { 617a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 618d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath "switch capabilities.\n", mmc_hostname(card->host)); 619d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return -ENOMEM; 620d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 621d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 622d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set 4-bit bus width */ 623d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((card->host->caps & MMC_CAP_4_BIT_DATA) && 624d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 625d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 626d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 627d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto out; 628d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 629d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); 630d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 631d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 63293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* 63393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani * Select the bus speed mode depending on host 63493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani * and card capability. 63593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani */ 63693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani sd_update_bus_speed_mode(card); 63793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 638d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set the driver strength for the card */ 639d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = sd_select_driver_type(card, status); 64049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 64149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath goto out; 64249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 64393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* Set current limit for the card */ 64493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = sd_set_current_limit(card, status); 6455371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (err) 6465371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath goto out; 6475371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 64893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* Set bus speed mode of the card */ 64993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = sd_set_bus_speed_mode(card, status); 650b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (err) 651b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 652b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 653810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt /* 654810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and 655810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. 656810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt */ 657810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning && 658810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt (card->sd_bus_speed == UHS_SDR50_BUS_SPEED || 659810e08ee425f8d7327e4b30069a9b2b3dccfc67dFredrik Soderstedt card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) { 6602c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_hold(card->host); 661a4924c71aa43d4f8a3f342b1f71788349472e684Girish K S err = card->host->ops->execute_tuning(card->host, 662a4924c71aa43d4f8a3f342b1f71788349472e684Girish K S MMC_SEND_TUNING_BLOCK); 6632c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_release(card->host); 6642c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma } 665d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 666d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathout: 667d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath kfree(status); 668d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 669d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 670d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 671d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 67251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 67351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_cid[2], card->raw_cid[3]); 67451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 67551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_csd[2], card->raw_csd[3]); 67651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); 67751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 678dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 679dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 68051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 68151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 68251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 68351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 68451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 68551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 68651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 68751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 68851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute *sd_std_attrs[] = { 68951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_cid.attr, 69051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_csd.attr, 69151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_scr.attr, 69251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_date.attr, 693dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_erase_size.attr, 694dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_preferred_erase_size.attr, 69551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_fwrev.attr, 69651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_hwrev.attr, 69751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_manfid.attr, 69851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_name.attr, 69951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_oemid.attr, 70051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_serial.attr, 70151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 70251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 70351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 70451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute_group sd_std_attr_group = { 70551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman .attrs = sd_std_attrs, 70651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 70751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 708a4dbd6740df0872cdf0a86841f75beec8381964dDavid Brownellstatic const struct attribute_group *sd_attr_groups[] = { 70951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &sd_std_attr_group, 71051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 71151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 71251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 71371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstruct device_type sd_type = { 71451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman .groups = sd_attr_groups, 71551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 71651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 7177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 71871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CID from card. 7197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 720d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathint mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) 7217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 7227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 72355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu u32 max_current; 7240797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm int retries = 10; 7256904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson u32 pocr = ocr; 7260797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm 7270797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholmtry_again: 7280797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm if (!retries) { 7290797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm ocr &= ~SD_OCR_S18R; 7300797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm pr_warning("%s: Skipping voltage switch\n", 7310797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm mmc_hostname(host)); 7320797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm } 7337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 7357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Since we're changing the OCR value, we seem to 7367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * need to tell some cards to go back to the idle 7377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * state. We wait 1ms to give cards time to 7387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * respond. 7397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_go_idle(host); 7417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 7437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 7447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * compliant card and we should set bit 30 7457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * of the ocr to indicate that we can handle 7467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * block-addressed SDHC cards. 7477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_if_cond(host, ocr); 74917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (!err) 750f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_CCS; 7517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 752f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 753f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If the host supports one of UHS-I modes, request the card 7540797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm * to switch to 1.8V signaling level. If the card has failed 7550797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm * repeatedly to switch however, skip this. 756f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 7570797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm if (retries && mmc_host_uhs(host)) 758f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_S18R; 759f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 76055c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu /* 76155c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * If the host can supply more than 150mA at current voltage, 76255c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu * XPC should be set to 1. 76355c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu */ 76455c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu max_current = sd_get_host_max_current(host); 76555c4665ea0a42fd6427826bfce96eb4b0389262aAaron Lu if (max_current > 150) 766f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_XPC; 767f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 768d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_send_app_op_cond(host, ocr, rocr); 76917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 77071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 7717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 772f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 773f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * In case CCS and S18A in the response is set, start Signal Voltage 774f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Switch procedure. SPI mode doesn't support CMD11. 775f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 776d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!mmc_host_is_spi(host) && rocr && 777d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ((*rocr & 0x41000000) == 0x41000000)) { 7780f791fdad82a02af013e4fc8c385dc690080c366Ulf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, 7796904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson pocr); 7800797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm if (err == -EAGAIN) { 7810797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm retries--; 7820797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm goto try_again; 7830797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm } else if (err) { 7840797e5f1453b2bedc08bbcbea0ea4fbe20350823Johan Rudholm retries = 0; 785f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath goto try_again; 786f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 787f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 788f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 789af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) 790af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_cid(host, cid); 791af51715079e7fb6b290e1881d63d815dc4de5011David Brownell else 792af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_all_send_cid(host, cid); 79371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 79571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 79671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card) 79871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 79971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 80071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 80171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 80271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CSD from card. 80371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 80471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_send_csd(card, card->raw_csd); 80517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 80671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 8077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 80871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_csd(card); 80971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 81071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 81171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 81371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 81471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, 81671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw bool reinit) 81771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 81871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 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 */ 84571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_read_switch(card); 84671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 84771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 84871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 84971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 85071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 85171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * For SPI, enable CRC as appropriate. 85271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * This CRC enable is located AFTER the reading of the 85371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * card registers because some SDHC cards are not able 85471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * to provide valid CRCs for non-512-byte blocks. 85571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 85671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_host_is_spi(host)) { 85771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_spi_set_crc(host, use_spi_crc); 85871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 85971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 86071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 86171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 86271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 86371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Check if read-only switch is active. 86471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 86571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 86671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int ro = -1; 86771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 8682c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma if (host->ops->get_ro) { 8692c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_hold(card->host); 87071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw ro = host->ops->get_ro(host); 8712c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma mmc_host_clk_release(card->host); 8722c4967f741e87cdd63de7271b97807041dccbf3bSujit Reddy Thumma } 87371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 87471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (ro < 0) { 875a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: host does not " 87671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "support reading read-only " 87771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "switch. assuming write-enable.\n", 87871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_hostname(host)); 87971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (ro > 0) { 88071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_readonly(card); 881adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 88271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 88371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 88471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 88571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 88671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 88771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawunsigned mmc_sd_get_max_clock(struct mmc_card *card) 88871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 88971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw unsigned max_dtr = (unsigned int)-1; 89071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 89171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_card_highspeed(card)) { 89271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (max_dtr > card->sw_caps.hs_max_dtr) 89371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->sw_caps.hs_max_dtr; 89471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (max_dtr > card->csd.max_dtr) { 89571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->csd.max_dtr; 89671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 89771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 89871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return max_dtr; 89971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 90071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 90171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_sd_go_highspeed(struct mmc_card *card) 90271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 90371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_highspeed(card); 90471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_set_timing(card->host, MMC_TIMING_SD_HS); 90571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 90671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 90771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw/* 90871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Handle the detection and initialisation of a card. 90971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * 91071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * In the case of a resume, "oldcard" will contain the card 91171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * we're trying to reinitialise. 91271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 91371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstatic int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 91471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *oldcard) 91571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 91671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *card; 91771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 91871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw u32 cid[4]; 919d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u32 rocr = 0; 92071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 92171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw BUG_ON(!host); 92271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw WARN_ON(!host->claimed); 92371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 924d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_get_cid(host, ocr, cid, &rocr); 92571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 92671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 92771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 92871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (oldcard) { 92971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) 93071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return -ENOENT; 9317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = oldcard; 9336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } else { 9346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 9356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Allocate card structure. 9366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 93751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card = mmc_alloc_card(host, &sd_type); 93871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (IS_ERR(card)) 93971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return PTR_ERR(card); 9406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9416904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson card->ocr = ocr; 9426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card->type = MMC_TYPE_SD; 9436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 9446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 947af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * For native busses: get card RCA and quit open drain mode. 9487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 949af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 950af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_relative_addr(host, &card->rca); 951af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 9527fca96758e977497c67a424006c60aaf2d3db212Wei WANG goto free_card; 953af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 9547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 95671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_get_csd(host, card); 95717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 9587fca96758e977497c67a424006c60aaf2d3db212Wei WANG goto free_card; 959bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 9606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_decode_cid(card); 9616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 9646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Select card, as all following commands rely on that. 9657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 966af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 967af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_select_card(card); 968af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 9697fca96758e977497c67a424006c60aaf2d3db212Wei WANG goto free_card; 9706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9711addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 97271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_setup_card(host, card, oldcard != NULL); 97371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 97471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw goto free_card; 9759d9f25c036dd584db175552a7d162403d3ab54b3Wolfgang Muees 976d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Initialization sequence for UHS-I cards */ 977d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (rocr & SD_ROCR_S18A) { 978d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_init_uhs_card(card); 97917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 9807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 9813a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 9823a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* Card is an ultra-high-speed card */ 983a303c5319c8e6ab0e744ebca118da8420043b2c3Philip Rakity mmc_card_set_uhs(card); 984d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } else { 985d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 986d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Attempt to change to high-speed (if supported) 987d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 988d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_switch_hs(card); 989d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err > 0) 990d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_sd_go_highspeed(card); 991d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (err) 992d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 993d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 994d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 995d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Set bus speed. 996d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 997d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_clock(host, mmc_sd_get_max_clock(card)); 9987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 999d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 1000d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Switch to wider bus (if supported). 1001d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 1002d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((host->caps & MMC_CAP_4_BIT_DATA) && 1003d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 1004d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 1005d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 1006d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 1007d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 1008d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 1009d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 10107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 10117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 101271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw host->card = card; 101317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 10146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanfree_card: 10166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 10176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(card); 10186abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1019adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 10206abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Host is being removed. Free up the current card. 10246abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10256abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_remove(struct mmc_host *host) 10266abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10276abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10296abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 10316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = NULL; 10326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 1035d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter * Card detection - card is alive. 1036d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter */ 1037d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunterstatic int mmc_sd_alive(struct mmc_host *host) 1038d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter{ 1039d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter return mmc_send_status(host->card, NULL); 1040d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter} 1041d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter 1042d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter/* 10436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Card detection callback from host. 10446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_detect(struct mmc_host *host) 10466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 10486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1052e94cfef698aae6b209d8918dd319312e4b02118dUlf Hansson mmc_get_card(host->card); 10536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 10556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Just check if our card has been removed. 10566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1057d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter err = _mmc_detect_card_removed(host); 10587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1059e94cfef698aae6b209d8918dd319312e4b02118dUlf Hansson mmc_put_card(host->card); 10607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 106117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 10624101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 10636abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 10667f7e4129c23f0419257184dff6fec89d2d5a8964Ulf Hansson mmc_power_off(host); 10676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 10686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 10696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10710cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int _mmc_sd_suspend(struct mmc_host *host) 10726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 107385e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung int err = 0; 107485e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung 10756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10799ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 10809ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson if (mmc_card_suspended(host->card)) 10819ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson goto out; 10829ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 1083af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) 108485e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung err = mmc_deselect_cards(host); 10856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card->state &= ~MMC_STATE_HIGHSPEED; 10869ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson if (!err) { 108774590263384e5d4601de7f0ee2790477578829eaUlf Hansson mmc_power_off(host); 10889ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_card_set_suspended(host->card); 10899ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson } 109095cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre 10919ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hanssonout: 10929ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_release_host(host); 109385e727edb963459d13cdd9ce84c335d251a005a7Jaehoon Chung return err; 10946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10970cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson * Callback for suspend 10980cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson */ 10990cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int mmc_sd_suspend(struct mmc_host *host) 11000cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson{ 11010cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson int err; 11020cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11030cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson err = _mmc_sd_suspend(host); 11040cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson if (!err) { 11050cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson pm_runtime_disable(&host->card->dev); 11060cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson pm_runtime_set_suspended(&host->card->dev); 11070cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson } 11080cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11090cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson return err; 11100cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson} 11110cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11120cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson/* 11136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * This function tries to determine if the same card is still present 11146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * and, if so, restore all state to it. 11156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 11160cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int _mmc_sd_resume(struct mmc_host *host) 11176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 11189ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson int err = 0; 11196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11206abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 11216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 11226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 11249ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 11259ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson if (!mmc_card_suspended(host->card)) 11269ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson goto out; 11279ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson 11286904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson mmc_power_up(host, host->card->ocr); 11296904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson err = mmc_sd_init_card(host, host->card->ocr, host->card); 11309ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_card_clr_suspended(host->card); 11312986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 11329ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hanssonout: 11339ec775f7efd6d17084b4f361804d2030d50fca0eUlf Hansson mmc_release_host(host); 113495cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return err; 11356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 11366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1137c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson/* 11380cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson * Callback for resume 11390cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson */ 11400cb403a227774f60f6f52137ca3618805498c4e6Ulf Hanssonstatic int mmc_sd_resume(struct mmc_host *host) 11410cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson{ 11424d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson int err = 0; 11430cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11444d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 11454d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson err = _mmc_sd_resume(host); 11464d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson pm_runtime_set_active(&host->card->dev); 11474d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson pm_runtime_mark_last_busy(&host->card->dev); 11484d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson } 11490cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson pm_runtime_enable(&host->card->dev); 11500cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11510cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson return err; 11520cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson} 11530cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson 11540cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson/* 1155c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson * Callback for runtime_suspend. 1156c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson */ 1157c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hanssonstatic int mmc_sd_runtime_suspend(struct mmc_host *host) 1158c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson{ 1159c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson int err; 1160c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1161c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1162c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return 0; 1163c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 11640cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson err = _mmc_sd_suspend(host); 11650cc81a8c6442e43618ff245948bfaa14fdf7938bUlf Hansson if (err) 1166c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1167c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson mmc_hostname(host), err); 1168c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1169c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return err; 1170c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson} 1171c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1172c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson/* 1173c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson * Callback for runtime_resume. 1174c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson */ 1175c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hanssonstatic int mmc_sd_runtime_resume(struct mmc_host *host) 1176c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson{ 1177c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson int err; 1178c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 11794d22378221bd0ed69c2e99408d31c108d72aeb80Ulf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1180c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return 0; 1181c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 11820cb403a227774f60f6f52137ca3618805498c4e6Ulf Hansson err = _mmc_sd_resume(host); 1183c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson if (err) 1184c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1185c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson mmc_hostname(host), err); 1186c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 1187c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson return 0; 1188c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson} 1189c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson 119012ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohenstatic int mmc_sd_power_restore(struct mmc_host *host) 1191eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter{ 119212ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen int ret; 119312ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 1194eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter host->card->state &= ~MMC_STATE_HIGHSPEED; 1195eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_claim_host(host); 11966904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson ret = mmc_sd_init_card(host, host->card->ocr, host->card); 1197eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_release_host(host); 119812ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 119912ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen return ret; 1200eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter} 1201eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter 12026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic const struct mmc_bus_ops mmc_sd_ops = { 12036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .remove = mmc_sd_remove, 12046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .detect = mmc_sd_detect, 12059feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .suspend = NULL, 12069feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .resume = NULL, 1207eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 1208d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter .alive = mmc_sd_alive, 12095992e78697484d8f58b749f87a06f89f4ba40a47Ulf Hansson .shutdown = mmc_sd_suspend, 12109feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter}; 12119feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 12129feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic const struct mmc_bus_ops mmc_sd_ops_unsafe = { 12139feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .remove = mmc_sd_remove, 12149feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .detect = mmc_sd_detect, 1215c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson .runtime_suspend = mmc_sd_runtime_suspend, 1216c4d770d72492df510077b277f21ac5f0dad9e5ebUlf Hansson .runtime_resume = mmc_sd_runtime_resume, 12176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .suspend = mmc_sd_suspend, 12186abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .resume = mmc_sd_resume, 1219eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 1220d30495048892980e5d453328d1cc9343b3f7e917Adrian Hunter .alive = mmc_sd_alive, 12215992e78697484d8f58b749f87a06f89f4ba40a47Ulf Hansson .shutdown = mmc_sd_suspend, 12226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman}; 12236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12249feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic void mmc_sd_attach_bus_ops(struct mmc_host *host) 12259feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter{ 12269feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter const struct mmc_bus_ops *bus_ops; 12279feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 122871d7d3d190fe77588269a8febf93cd739bd91eb3Matt Fleming if (!mmc_card_is_removable(host)) 12299feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops_unsafe; 12309feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter else 12319feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops; 12329feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_attach_bus(host, bus_ops); 12339feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter} 12349feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 12356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 12366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Starting point for SD card init. 12376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1238807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Rossint mmc_attach_sd(struct mmc_host *host) 12396abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 12406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 12416904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson u32 ocr, rocr; 12426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 1244d84075c8aed771d47d7ac6e96b098559da361c25Pierre Ossman WARN_ON(!host->claimed); 12456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1246807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross err = mmc_send_app_op_cond(host, 0, &ocr); 1247807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross if (err) 1248807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross return err; 1249807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross 12509feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_sd_attach_bus_ops(host); 12518f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 12528f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai host->ocr_avail = host->ocr_avail_sd; 12536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 1255af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * We need to get OCR a different way for SPI. 1256af51715079e7fb6b290e1881d63d815dc4de5011David Brownell */ 1257af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) { 1258af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_go_idle(host); 1259af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 1260af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_spi_read_ocr(host, 0, &ocr); 1261af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 1262af51715079e7fb6b290e1881d63d815dc4de5011David Brownell goto err; 1263af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 1264af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 12656904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson rocr = mmc_select_voltage(host, ocr); 12666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 12686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Can we support the voltage(s) of the card(s)? 12696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 12706904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson if (!rocr) { 1271109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman err = -EINVAL; 12726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 1273109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman } 12746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 12766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Detect and init the card. 12776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 12786904115095ad60ced638eb1e36e0e4e5e7de00b0Ulf Hansson err = mmc_sd_init_card(host, rocr, NULL); 127917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 12806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 12816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 12834101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman err = mmc_add_card(host->card); 1284807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_claim_host(host); 12857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (err) 12862986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman goto remove_card; 12877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 12887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return 0; 12897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 12902986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossmanremove_card: 1291807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_release_host(host); 12926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 12937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman host->card = NULL; 12942986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 12957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanerr: 12967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_detach_bus(host); 12977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1298a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: error %d whilst initialising SD card\n", 1299109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman mmc_hostname(host), err); 1300109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman 1301adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 13027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 13037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1304