sd.c revision fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5
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> 167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/host.h> 187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/card.h> 197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/mmc.h> 203373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman#include <linux/mmc/sd.h> 217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "core.h" 234101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman#include "bus.h" 247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "mmc_ops.h" 25ce1014965ae2538e7447b19879bd0e8109690b79Mark Brown#include "sd.h" 267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sd_ops.h" 277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tran_exp[] = { 297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10000, 100000, 1000000, 10000000, 307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 0, 0, 0 317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned char tran_mant[] = { 347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_exp[] = { 397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_mant[] = { 437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#define UNSTUFF_BITS(resp,start,size) \ 487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman ({ \ 497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __size = size; \ 507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __off = 3 - ((start) / 32); \ 527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __shft = (start) & 31; \ 537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 __res; \ 547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman \ 557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res = resp[__off] >> __shft; \ 567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (__size + __shft > 32) \ 577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res & __mask; \ 597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman }) 607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 6471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_decode_cid(struct mmc_card *card) 657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_cid; 677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman memset(&card->cid, 0, sizeof(struct mmc_cid)); 697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD doesn't currently have a version field so we will 727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * have to assume we can parse this. 737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year += 2000; /* SD cards year offset */ 887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 128-bit response, decode to our card CSD structure. 927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 93bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_csd(struct mmc_card *card) 947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_csd *csd = &card->csd; 967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int e, m, csd_struct; 977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_csd; 987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 1007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman switch (csd_struct) { 1027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 0: 1037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << (e + 2); 1167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 124dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 125dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 46, 1)) { 126dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 127dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else if (csd->write_blkbits >= 9) { 128dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; 129dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 130dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 1317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 1: 1337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 1343a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath * This is a block-addressed SDHC or SDXC card. Most 1357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * interesting fields are unused and have fixed 1367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * values. To avoid getting tripped by buggy cards, 1377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * we assume those fixed values ourselves. 1387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_blockaddr(card); 1407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = 0; /* Unused */ 1427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = 0; /* Unused */ 1437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1483a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath csd->c_size = UNSTUFF_BITS(resp, 48, 22); 1493a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 1503a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* SDXC cards have a minimum C_SIZE of 0x00FFFF */ 1513a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath if (csd->c_size >= 0xFFFF) 1523a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath mmc_card_set_ext_capacity(card); 1537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << 10; 1567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = 9; 1587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = 0; 1597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = 0; 1607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = 0; 1617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = 4; /* Unused */ 1627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = 9; 1637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = 0; 164dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 1657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman default: 167a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: unrecognised CSD structure version %d\n", 1687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), csd_struct); 169bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 171bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 172dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erase_size = csd->erase_size; 173dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 174bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 180bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_scr(struct mmc_card *card) 1817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct sd_scr *scr = &card->scr; 1837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int scr_struct; 1847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 resp[4]; 1857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[3] = card->raw_scr[1]; 1877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[2] = card->raw_scr[0]; 1887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 1907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (scr_struct != 0) { 191a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: unrecognised SCR structure version %d\n", 1927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), scr_struct); 193bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 1957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 1977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 198013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (scr->sda_vsn == SCR_SPEC_VER_2) 199013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Check if Physical Layer Spec v3.0 is supported */ 200013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1); 201bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 202dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 55, 1)) 203dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0xFF; 204dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter else 205dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0x0; 206dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 207f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin if (scr->sda_spec3) 208f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin scr->cmds = UNSTUFF_BITS(resp, 32, 2); 209bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 2107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 2117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 213dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 214dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 215dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterstatic int mmc_read_ssr(struct mmc_card *card) 216dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter{ 217dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter unsigned int au, es, et, eo; 218dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter int err, i; 219dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter u32 *ssr; 220dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 221dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!(card->csd.cmdclass & CCC_APP_SPEC)) { 222a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: card lacks mandatory SD Status " 223dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "function.\n", mmc_hostname(card->host)); 224dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return 0; 225dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 226dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 227dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr = kmalloc(64, GFP_KERNEL); 228dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!ssr) 229dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return -ENOMEM; 230dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 231dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_app_sd_status(card, ssr); 232dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) { 233a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: problem reading SD Status " 234dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "register.\n", mmc_hostname(card->host)); 235dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = 0; 236dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter goto out; 237dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 238dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 239dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter for (i = 0; i < 16; i++) 240dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr[i] = be32_to_cpu(ssr[i]); 241dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 242dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 243dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * UNSTUFF_BITS only works with four u32s so we have to offset the 244dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * bitfield positions accordingly. 245dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 246dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter au = UNSTUFF_BITS(ssr, 428 - 384, 4); 247dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (au > 0 || au <= 9) { 248dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.au = 1 << (au + 4); 249dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter es = UNSTUFF_BITS(ssr, 408 - 384, 16); 250dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter et = UNSTUFF_BITS(ssr, 402 - 384, 6); 251dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter eo = UNSTUFF_BITS(ssr, 400 - 384, 2); 252dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (es && et) { 253dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_timeout = (et * 1000) / es; 254dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_offset = eo * 1000; 255dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 256dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else { 257a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: SD Status: Invalid Allocation Unit " 258dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "size.\n", mmc_hostname(card->host)); 259dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 260dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterout: 261dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter kfree(ssr); 262dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 263dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter} 264dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 265dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter/* 2661addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Fetches and decodes switch information 2677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 2681addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_read_switch(struct mmc_card *card) 2697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 2707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 2717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u8 *status; 2727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2733373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 27417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2753373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2763373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 277a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: card lacks mandatory switch " 2783373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "function, performance might suffer.\n", 2793373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 28017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2813373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman } 2823373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 28317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman status = kmalloc(64, GFP_KERNEL); 2867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (!status) { 287a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 288013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "switch capabilities.\n", 289013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 29017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 2917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 293013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Find out the supported Bus Speed Modes. */ 2947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 0, 0, 1, status); 29517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 296013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 297013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 298013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 299013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 300013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 301adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman goto out; 302adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 303a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: problem reading Bus Speed modes.\n", 3043373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 30517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = 0; 306adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 3077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 310fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5Qiang Liu if (status[13] & SD_MODE_HIGH_SPEED) 311fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5Qiang Liu card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR; 312f2815f68dabbb373fd1c9f0fd4a609d486697c2bSubhash Jadavani 313013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (card->scr.sda_spec3) { 314013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_bus_mode = status[13]; 315013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 316013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Find out Driver Strengths supported by the card */ 317013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = mmc_sd_switch(card, 0, 2, 1, status); 318013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err) { 319013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 320013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 321013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 322013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 323013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 324013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 325013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 326a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: problem reading " 327013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "Driver Strength.\n", 328013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 329013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = 0; 330013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 331013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 332013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 333013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 334013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_drv_type = status[9]; 335013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 336013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Find out Current Limits supported by the card */ 337013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = mmc_sd_switch(card, 0, 3, 1, status); 338013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err) { 339013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 340013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 341013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 342013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 343013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 344013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 345013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 346a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: problem reading " 347013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "Current Limit.\n", 348013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 349013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = 0; 350013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 351013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 352013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 353013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 354013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_curr_limit = status[7]; 355013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 3567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3571addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanout: 3581addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman kfree(status); 3591addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3601addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman return err; 3611addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman} 3621addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3631addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman/* 3641addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 3651addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman */ 36671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_switch_hs(struct mmc_card *card) 3671addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman{ 3681addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman int err; 3691addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman u8 *status; 3701addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3713373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 37217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3733373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3743373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 37517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3763373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3771addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 37817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3791addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3801addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (card->sw_caps.hs_max_dtr == 0) 38117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3821addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 38317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 3841addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3851addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman status = kmalloc(64, GFP_KERNEL); 3861addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!status) { 387a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 388facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 38917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 3901addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman } 3911addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 1, 0, 1, status); 39317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if ((status[16] & 0xF) != 1) { 397a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem switching card " 3987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman "into high-speed mode!\n", 3997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host)); 40071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 0; 4017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else { 40271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 1; 4037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 4047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanout: 4067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman kfree(status); 4077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return err; 4097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 4107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 411d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int sd_select_driver_type(struct mmc_card *card, u8 *status) 412d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 413ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int host_drv_type = SD_DRIVER_TYPE_B; 414ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int card_drv_type = SD_DRIVER_TYPE_B; 415ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity int drive_strength; 416d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 417d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 418d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 419d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * If the host doesn't support any of the Driver Types A,C or D, 420ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * or there is no board specific handler then default Driver 421ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * Type B is used. 422d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 423d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->host->caps & (MMC_CAP_DRIVER_TYPE_A | MMC_CAP_DRIVER_TYPE_C 424d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath | MMC_CAP_DRIVER_TYPE_D))) 425d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 426d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 427ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (!card->host->ops->select_drive_strength) 428ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity return 0; 429ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 430ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) 431ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_A; 432ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 433ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) 434ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_C; 435ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 436ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) 437ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type |= SD_DRIVER_TYPE_D; 438ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 439ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A) 440ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_A; 441ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 442ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) 443ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_C; 444ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 445ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_D) 446ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card_drv_type |= SD_DRIVER_TYPE_D; 447ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity 448ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity /* 449ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * The drive strength that the hardware can support 450ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * depends on the board design. Pass the appropriate 451ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * information and let the hardware specific code 452ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity * return what is possible given the options 453ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity */ 454ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity drive_strength = card->host->ops->select_drive_strength( 455ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity card->sw_caps.uhs_max_dtr, 456ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity host_drv_type, card_drv_type); 457d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 458ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity err = mmc_sd_switch(card, 1, 2, drive_strength, status); 459d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 460d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 461d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 462ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity if ((status[15] & 0xF) != drive_strength) { 463a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem setting drive strength!\n", 464d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_hostname(card->host)); 465d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 466d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 467d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 468ca8e99b32e3863c98ac958617cc157a00bf445b8Philip Rakity mmc_set_driver_type(card->host, drive_strength); 469d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 470d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 471d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 472d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 47393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavanistatic void sd_update_bus_speed_mode(struct mmc_card *card) 47449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath{ 47549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* 47649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * If the host doesn't support any of the UHS-I modes, fallback on 47749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * default speed. 47849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath */ 47949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | 48093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) { 48193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = 0; 48293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani return; 48393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani } 48449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 48549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if ((card->host->caps & MMC_CAP_UHS_SDR104) && 48649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { 48793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR104_BUS_SPEED; 48849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && 48949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { 49093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_DDR50_BUS_SPEED; 49149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 49249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & 49349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR50)) { 49493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR50_BUS_SPEED; 49549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 49649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && 49749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { 49893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR25_BUS_SPEED; 49949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 50049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | 50149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & 50249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR12)) { 50393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sd_bus_speed = UHS_SDR12_BUS_SPEED; 50493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani } 50593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani} 50693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 50793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavanistatic int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) 50893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani{ 50993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani int err; 51093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani unsigned int timing = 0; 51193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 51293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani switch (card->sd_bus_speed) { 51393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR104_BUS_SPEED: 51493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR104; 51593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; 51693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 51793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_DDR50_BUS_SPEED: 51893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_DDR50; 51993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; 52093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 52193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR50_BUS_SPEED: 52293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR50; 52393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; 52493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 52593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR25_BUS_SPEED: 52693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR25; 52793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; 52893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 52993c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani case UHS_SDR12_BUS_SPEED: 53093c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani timing = MMC_TIMING_UHS_SDR12; 53193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; 53293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani break; 53393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani default: 53493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani return 0; 53549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 53649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 53793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status); 53849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 53949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return err; 54049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 54193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani if ((status[16] & 0xF) != card->sd_bus_speed) 542a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem setting bus speed mode!\n", 54349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_hostname(card->host)); 54449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath else { 54549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_timing(card->host, timing); 54649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); 54749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 54849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 54949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return 0; 55049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath} 55149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 5525371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nathstatic int sd_set_current_limit(struct mmc_card *card, u8 *status) 5535371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath{ 5545371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath int current_limit = 0; 5555371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath int err; 5565371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5575371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath /* 5585371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * Current limit switch is only defined for SDR50, SDR104, and DDR50 5595371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * bus speed modes. For other bus speed modes, we set the default 5605371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * current limit of 200mA. 5615371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath */ 5625371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if ((card->sd_bus_speed == UHS_SDR50_BUS_SPEED) || 5635371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath (card->sd_bus_speed == UHS_SDR104_BUS_SPEED) || 5645371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath (card->sd_bus_speed == UHS_DDR50_BUS_SPEED)) { 5655371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->host->caps & MMC_CAP_MAX_CURRENT_800) { 5665371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800) 5675371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_800; 5685371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5695371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_600) 5705371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_600; 5715371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5725371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_400) 5735371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 5745371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5755371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_200) 5765371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5775371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else if (card->host->caps & MMC_CAP_MAX_CURRENT_600) { 5785371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600) 5795371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_600; 5805371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5815371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_400) 5825371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 5835371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5845371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_200) 5855371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5865371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else if (card->host->caps & MMC_CAP_MAX_CURRENT_400) { 5875371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400) 5885371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 5895371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5905371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_200) 5915371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5925371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else if (card->host->caps & MMC_CAP_MAX_CURRENT_200) { 5935371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200) 5945371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5955371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } 5965371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else 5975371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5985371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5995371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath err = mmc_sd_switch(card, 1, 3, current_limit, status); 6005371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (err) 6015371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath return err; 6025371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 6035371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (((status[15] >> 4) & 0x0F) != current_limit) 604a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: Problem setting current limit!\n", 6055371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath mmc_hostname(card->host)); 6065371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 6075371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath return 0; 6085371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath} 6095371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 610d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath/* 611d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * UHS-I specific initialization procedure 612d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 613d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int mmc_sd_init_uhs_card(struct mmc_card *card) 614d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 615d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 616d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u8 *status; 617d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 618d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!card->scr.sda_spec3) 619d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 620d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 621d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->csd.cmdclass & CCC_SWITCH)) 622d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 623d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 624d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath status = kmalloc(64, GFP_KERNEL); 625d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!status) { 626a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: could not allocate a buffer for " 627d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath "switch capabilities.\n", mmc_hostname(card->host)); 628d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return -ENOMEM; 629d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 630d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 631d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set 4-bit bus width */ 632d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((card->host->caps & MMC_CAP_4_BIT_DATA) && 633d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 634d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 635d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 636d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto out; 637d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 638d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); 639d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 640d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 64193c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* 64293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani * Select the bus speed mode depending on host 64393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani * and card capability. 64493c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani */ 64593c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani sd_update_bus_speed_mode(card); 64693c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani 647d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set the driver strength for the card */ 648d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = sd_select_driver_type(card, status); 64949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 65049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath goto out; 65149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 65293c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* Set current limit for the card */ 65393c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = sd_set_current_limit(card, status); 6545371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (err) 6555371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath goto out; 6565371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 65793c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani /* Set bus speed mode of the card */ 65893c712f99d8e412b2d297edfe9f59b90636897c1Subhash Jadavani err = sd_set_bus_speed_mode(card, status); 659b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (err) 660b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 661b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 662b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* SPI mode doesn't define CMD19 */ 663b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) 664b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = card->host->ops->execute_tuning(card->host); 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; 7237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 7257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Since we're changing the OCR value, we seem to 7267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * need to tell some cards to go back to the idle 7277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * state. We wait 1ms to give cards time to 7287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * respond. 7297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_go_idle(host); 7317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 7337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 7347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * compliant card and we should set bit 30 7357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * of the ocr to indicate that we can handle 7367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * block-addressed SDHC cards. 7377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7386abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_if_cond(host, ocr); 73917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (!err) 740f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_CCS; 7417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 742f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 743f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If the host supports one of UHS-I modes, request the card 744f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * to switch to 1.8V signaling level. 745f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 746f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | 747f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)) 748f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_S18R; 749f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 750f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* If the host can supply more than 150mA, XPC should be set to 1. */ 751f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->caps & (MMC_CAP_SET_XPC_330 | MMC_CAP_SET_XPC_300 | 752f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath MMC_CAP_SET_XPC_180)) 753f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_XPC; 754f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 755f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nathtry_again: 756d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_send_app_op_cond(host, ocr, rocr); 75717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 75871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 7597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 760f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 761f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * In case CCS and S18A in the response is set, start Signal Voltage 762f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Switch procedure. SPI mode doesn't support CMD11. 763f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 764d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!mmc_host_is_spi(host) && rocr && 765d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ((*rocr & 0x41000000) == 0x41000000)) { 766261bbd463a091b939770255d559bbc89b1bad568Philip Rakity err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, true); 767f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (err) { 768f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr &= ~SD_OCR_S18R; 769f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath goto try_again; 770f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 771f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 772f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 773af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) 774af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_cid(host, cid); 775af51715079e7fb6b290e1881d63d815dc4de5011David Brownell else 776af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_all_send_cid(host, cid); 77771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 77871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 77971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 78071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 78171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card) 78271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 78371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 78471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 78571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 78671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CSD from card. 78771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 78871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_send_csd(card, card->raw_csd); 78917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 79071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 7917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 79271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_csd(card); 79371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 79471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 79571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 79771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 79871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, 80071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw bool reinit) 80171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 80271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 80371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 80471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 80571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 80671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch SCR from card. 80771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 80871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_app_send_scr(card, card->raw_scr); 80971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 81071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 81171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_scr(card); 81371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 81471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 81571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 817dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 818dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 819dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_read_ssr(card); 820dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) 821dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 822dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 823dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* Erase init depends on CSD and SSR */ 824dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter mmc_init_erase(card); 825dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 826dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 82771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch switch information from card. 82871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 82971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_read_switch(card); 83071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 83171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 83271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 83371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 83471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 83571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * For SPI, enable CRC as appropriate. 83671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * This CRC enable is located AFTER the reading of the 83771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * card registers because some SDHC cards are not able 83871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * to provide valid CRCs for non-512-byte blocks. 83971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 84071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_host_is_spi(host)) { 84171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_spi_set_crc(host, use_spi_crc); 84271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 84371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 84471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 84571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 84671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 84771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Check if read-only switch is active. 84871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 84971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 85071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int ro = -1; 85171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 85271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (host->ops->get_ro) 85371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw ro = host->ops->get_ro(host); 85471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 85571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (ro < 0) { 856a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: host does not " 85771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "support reading read-only " 85871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "switch. assuming write-enable.\n", 85971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_hostname(host)); 86071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (ro > 0) { 86171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_readonly(card); 862adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 86371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 86471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 86571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 86671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 86771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 86871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawunsigned mmc_sd_get_max_clock(struct mmc_card *card) 86971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 87071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw unsigned max_dtr = (unsigned int)-1; 87171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 87271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_card_highspeed(card)) { 87371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (max_dtr > card->sw_caps.hs_max_dtr) 87471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->sw_caps.hs_max_dtr; 87571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (max_dtr > card->csd.max_dtr) { 87671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->csd.max_dtr; 87771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 87871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 87971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return max_dtr; 88071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 88171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 88271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_sd_go_highspeed(struct mmc_card *card) 88371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 88471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_highspeed(card); 88571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_set_timing(card->host, MMC_TIMING_SD_HS); 88671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 88771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 88871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw/* 88971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Handle the detection and initialisation of a card. 89071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * 89171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * In the case of a resume, "oldcard" will contain the card 89271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * we're trying to reinitialise. 89371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 89471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstatic int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 89571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *oldcard) 89671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 89771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *card; 89871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 89971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw u32 cid[4]; 900d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u32 rocr = 0; 90171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 90271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw BUG_ON(!host); 90371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw WARN_ON(!host->claimed); 90471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 905d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_get_cid(host, ocr, cid, &rocr); 90671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 90771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 90871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 90971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (oldcard) { 91071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) 91171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return -ENOENT; 9127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = oldcard; 9146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } else { 9156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 9166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Allocate card structure. 9176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 91851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card = mmc_alloc_card(host, &sd_type); 91971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (IS_ERR(card)) 92071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return PTR_ERR(card); 9216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card->type = MMC_TYPE_SD; 9236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 9246abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 927af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * For native busses: get card RCA and quit open drain mode. 9287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 929af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 930af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_relative_addr(host, &card->rca); 931af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 93271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 933af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 9347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 93671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_get_csd(host, card); 93717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 93871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 939bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 9406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_decode_cid(card); 9416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 9446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Select card, as all following commands rely on that. 9457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 946af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 947af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_select_card(card); 948af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 94971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 9506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9511addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 95271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_setup_card(host, card, oldcard != NULL); 95371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 95471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw goto free_card; 9559d9f25c036dd584db175552a7d162403d3ab54b3Wolfgang Muees 956d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Initialization sequence for UHS-I cards */ 957d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (rocr & SD_ROCR_S18A) { 958d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_init_uhs_card(card); 95917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 9607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 9613a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 9623a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* Card is an ultra-high-speed card */ 9633a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath mmc_sd_card_set_uhs(card); 9644d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 9654d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* 9664d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * Since initialization is now complete, enable preset 9674d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * value registers for UHS-I cards. 9684d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath */ 9694d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->ops->enable_preset_value) 9704d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath host->ops->enable_preset_value(host, true); 971d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } else { 972d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 973d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Attempt to change to high-speed (if supported) 974d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 975d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_switch_hs(card); 976d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err > 0) 977d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_sd_go_highspeed(card); 978d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (err) 979d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 980d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 981d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 982d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Set bus speed. 983d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 984d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_clock(host, mmc_sd_get_max_clock(card)); 9857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 986d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 987d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Switch to wider bus (if supported). 988d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 989d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((host->caps & MMC_CAP_4_BIT_DATA) && 990d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 991d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 992d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 993d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 994d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 995d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 996d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 9977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 9987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 99971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw host->card = card; 100017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 10016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanfree_card: 10036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 10046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(card); 10056abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1006adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 10076abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10086abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10096abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Host is being removed. Free up the current card. 10116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10126abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_remove(struct mmc_host *host) 10136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 10186abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = NULL; 10196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10206abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Card detection callback from host. 10236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10246abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_detect(struct mmc_host *host) 10256abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10266abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 10276abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10296abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 10346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Just check if our card has been removed. 10356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_status(host->card, NULL); 10377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_release_host(host); 10397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 104017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 10414101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 10426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 10457f7e4129c23f0419257184dff6fec89d2d5a8964Ulf Hansson mmc_power_off(host); 10466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 10476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 10486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Suspend callback from host. 10526abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 105395cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitrestatic int mmc_sd_suspend(struct mmc_host *host) 10546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10576abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 1059af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) 1060af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_deselect_cards(host); 10616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card->state &= ~MMC_STATE_HIGHSPEED; 10626abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 106395cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre 106495cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return 0; 10656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Resume callback from host. 10696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * 10706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * This function tries to determine if the same card is still present 10716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * and, if so, restore all state to it. 10726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 107395cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitrestatic int mmc_sd_resume(struct mmc_host *host) 10746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 10766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, host->card); 10822986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_release_host(host); 10832986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 108495cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return err; 10856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 108712ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohenstatic int mmc_sd_power_restore(struct mmc_host *host) 1088eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter{ 108912ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen int ret; 109012ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 1091eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter host->card->state &= ~MMC_STATE_HIGHSPEED; 1092eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_claim_host(host); 109312ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen ret = mmc_sd_init_card(host, host->ocr, host->card); 1094eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_release_host(host); 109512ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 109612ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen return ret; 1097eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter} 1098eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter 10996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic const struct mmc_bus_ops mmc_sd_ops = { 11006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .remove = mmc_sd_remove, 11016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .detect = mmc_sd_detect, 11029feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .suspend = NULL, 11039feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .resume = NULL, 1104eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 11059feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter}; 11069feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 11079feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic const struct mmc_bus_ops mmc_sd_ops_unsafe = { 11089feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .remove = mmc_sd_remove, 11099feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .detect = mmc_sd_detect, 11106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .suspend = mmc_sd_suspend, 11116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .resume = mmc_sd_resume, 1112eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 11136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman}; 11146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11159feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic void mmc_sd_attach_bus_ops(struct mmc_host *host) 11169feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter{ 11179feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter const struct mmc_bus_ops *bus_ops; 11189feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 111971d7d3d190fe77588269a8febf93cd739bd91eb3Matt Fleming if (!mmc_card_is_removable(host)) 11209feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops_unsafe; 11219feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter else 11229feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops; 11239feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_attach_bus(host, bus_ops); 11249feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter} 11259feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 11266abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 11276abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Starting point for SD card init. 11286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1129807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Rossint mmc_attach_sd(struct mmc_host *host) 11306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 11316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 1132807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross u32 ocr; 11336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 1135d84075c8aed771d47d7ac6e96b098559da361c25Pierre Ossman WARN_ON(!host->claimed); 11366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1137f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Make sure we are at 3.3V signalling voltage */ 1138261bbd463a091b939770255d559bbc89b1bad568Philip Rakity err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false); 1139f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (err) 1140f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return err; 1141f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 11424d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* Disable preset value enable if already set since last time */ 11434d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->ops->enable_preset_value) 11444d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath host->ops->enable_preset_value(host, false); 11454d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 1146807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross err = mmc_send_app_op_cond(host, 0, &ocr); 1147807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross if (err) 1148807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross return err; 1149807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross 11509feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_sd_attach_bus_ops(host); 11518f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 11528f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai host->ocr_avail = host->ocr_avail_sd; 11536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 1155af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * We need to get OCR a different way for SPI. 1156af51715079e7fb6b290e1881d63d815dc4de5011David Brownell */ 1157af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) { 1158af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_go_idle(host); 1159af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 1160af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_spi_read_ocr(host, 0, &ocr); 1161af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 1162af51715079e7fb6b290e1881d63d815dc4de5011David Brownell goto err; 1163af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 1164af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 1165af51715079e7fb6b290e1881d63d815dc4de5011David Brownell /* 11666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Sanity check the voltages that the card claims to 11676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * support. 11686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 11696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (ocr & 0x7F) { 1170a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: card claims to support voltages " 11716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "below the defined range. These will be ignored.\n", 11726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_hostname(host)); 11736abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~0x7F; 11746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 11756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11768f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if ((ocr & MMC_VDD_165_195) && 11778f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai !(host->ocr_avail_sd & MMC_VDD_165_195)) { 1178a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_warning("%s: SD card claims to support the " 11796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "incompletely defined 'low voltage range'. This " 11806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "will be ignored.\n", mmc_hostname(host)); 11816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~MMC_VDD_165_195; 11826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 11836abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11846abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 11856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 11876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Can we support the voltage(s) of the card(s)? 11886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1189109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman if (!host->ocr) { 1190109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman err = -EINVAL; 11916abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 1192109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman } 11936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 11956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Detect and init the card. 11966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 11976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, NULL); 119817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 11996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 12006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 12016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 12024101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman err = mmc_add_card(host->card); 1203807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_claim_host(host); 12047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (err) 12052986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman goto remove_card; 12067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 12077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return 0; 12087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 12092986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossmanremove_card: 1210807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_release_host(host); 12116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 12127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman host->card = NULL; 12132986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 12147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanerr: 12157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_detach_bus(host); 12167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1217a3c76eb9d4a1e68a69dd880cf0bcb8a52418b993Girish K S pr_err("%s: error %d whilst initialising SD card\n", 1218109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman mmc_hostname(host), err); 1219109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman 1220adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 12217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 12227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1223