sd.c revision adf66a0dc5e8be8d4e64f3c2114f9b175558235b
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> 147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/host.h> 167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/card.h> 177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/mmc.h> 183373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman#include <linux/mmc/sd.h> 197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "core.h" 217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sysfs.h" 224101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman#include "bus.h" 237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "mmc_ops.h" 247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sd_ops.h" 257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tran_exp[] = { 277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10000, 100000, 1000000, 10000000, 287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 0, 0, 0 297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned char tran_mant[] = { 327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_exp[] = { 377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_mant[] = { 417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#define UNSTUFF_BITS(resp,start,size) \ 467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman ({ \ 477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __size = size; \ 487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __off = 3 - ((start) / 32); \ 507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __shft = (start) & 31; \ 517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 __res; \ 527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman \ 537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res = resp[__off] >> __shft; \ 547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (__size + __shft > 32) \ 557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res & __mask; \ 577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman }) 587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic void mmc_decode_cid(struct mmc_card *card) 637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_cid; 657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman memset(&card->cid, 0, sizeof(struct mmc_cid)); 677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD doesn't currently have a version field so we will 707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * have to assume we can parse this. 717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year += 2000; /* SD cards year offset */ 867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 128-bit response, decode to our card CSD structure. 907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 91bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_csd(struct mmc_card *card) 927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_csd *csd = &card->csd; 947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int e, m, csd_struct; 957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_csd; 967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman switch (csd_struct) { 1007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 0: 1017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << (e + 2); 1147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 1227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 1: 1247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 1257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * This is a block-addressed SDHC card. Most 1267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * interesting fields are unused and have fixed 1277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * values. To avoid getting tripped by buggy cards, 1287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * we assume those fixed values ourselves. 1297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_blockaddr(card); 1317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = 0; /* Unused */ 1337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = 0; /* Unused */ 1347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << 10; 1427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = 9; 1447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = 0; 1457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = 0; 1467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = 0; 1477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = 4; /* Unused */ 1487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = 9; 1497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = 0; 1507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman default: 152facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: unrecognised CSD structure version %d\n", 1537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), csd_struct); 154bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 156bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 157bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 163bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_scr(struct mmc_card *card) 1647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct sd_scr *scr = &card->scr; 1667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int scr_struct; 1677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 resp[4]; 1687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman BUG_ON(!mmc_card_sd(card)); 1707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[3] = card->raw_scr[1]; 1727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[2] = card->raw_scr[0]; 1737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 1757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (scr_struct != 0) { 176facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: unrecognised SCR structure version %d\n", 1777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), scr_struct); 178bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 1807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 1827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 183bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 184bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1881addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Fetches and decodes switch information 1897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1901addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_read_switch(struct mmc_card *card) 1917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 1937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u8 *status; 1947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1953373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 19617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 1973373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 1983373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 1993373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman printk(KERN_WARNING "%s: card lacks mandatory switch " 2003373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "function, performance might suffer.\n", 2013373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 20217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2033373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman } 2043373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 20517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman status = kmalloc(64, GFP_KERNEL); 2087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (!status) { 209facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: could not allocate a buffer for " 210facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 21117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 2127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 0, 0, 1, status); 21517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 216adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman /* 217adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman * We all hosts that cannot perform the command 218adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman * to fail more gracefully 219adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman */ 220adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman if (err != -EINVAL) 221adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman goto out; 222adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 2233373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman printk(KERN_WARNING "%s: problem reading switch " 2243373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "capabilities, performance might suffer.\n", 2253373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 22617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = 0; 227adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 2287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 2297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (status[13] & 0x02) 2327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->sw_caps.hs_max_dtr = 50000000; 2337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2341addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanout: 2351addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman kfree(status); 2361addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 2371addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman return err; 2381addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman} 2391addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 2401addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman/* 2411addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 2421addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman */ 2431addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_switch_hs(struct mmc_card *card) 2441addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman{ 2451addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman int err; 2461addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman u8 *status; 2471addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 2483373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 24917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2503373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2513373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 25217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2533373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2541addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 25517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2561addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 2571addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (card->sw_caps.hs_max_dtr == 0) 25817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2591addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 26017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2611addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 2621addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman status = kmalloc(64, GFP_KERNEL); 2631addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!status) { 264facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: could not allocate a buffer for " 265facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 26617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 2671addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman } 2681addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 2697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 1, 0, 1, status); 27017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 2717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 2727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if ((status[16] & 0xF) != 1) { 2747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman printk(KERN_WARNING "%s: Problem switching card " 2757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman "into high-speed mode!\n", 2767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host)); 2777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else { 2787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_highspeed(card); 2797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_set_timing(card->host, MMC_TIMING_SD_HS); 2807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanout: 2837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman kfree(status); 2847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return err; 2867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 2877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 2896abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Handle the detection and initialisation of a card. 2906abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * 2916abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * In the case of a resume, "curcard" will contain the card 2926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * we're trying to reinitialise. 2937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 2946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 2956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman struct mmc_card *oldcard) 2967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 2977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_card *card; 2987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 2997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 cid[4]; 3007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int max_dtr; 3017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman BUG_ON(!host); 3037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman BUG_ON(!host->claimed); 3047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 3067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Since we're changing the OCR value, we seem to 3077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * need to tell some cards to go back to the idle 3087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * state. We wait 1ms to give cards time to 3097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * respond. 3107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 3117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_go_idle(host); 3127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 3147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 3157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * compliant card and we should set bit 30 3167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * of the ocr to indicate that we can handle 3177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * block-addressed SDHC cards. 3187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 3196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_if_cond(host, ocr); 32017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (!err) 3216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr |= 1 << 30; 3227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_app_op_cond(host, ocr, NULL); 32417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3256abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 3267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 3287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Fetch CID from card. 3297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 3307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_all_send_cid(host, cid); 33117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto err; 3337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (oldcard) { 335adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 336adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman err = -ENOENT; 3376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 338adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 3397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = oldcard; 3416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } else { 3426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 3436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Allocate card structure. 3446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 3456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = mmc_alloc_card(host); 346adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman if (IS_ERR(card)) { 347adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman err = PTR_ERR(card); 3486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 349adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 3506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 3516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card->type = MMC_TYPE_SD; 3526abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 3536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 3547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 3567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Set card RCA. 3577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 3587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_send_relative_addr(host, &card->rca); 35917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 3617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 3637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 3656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 3666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Fetch CSD from card. 3676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 3686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_csd(card, card->raw_csd); 36917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto free_card; 3717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 372bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman err = mmc_decode_csd(card); 373adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman if (err) 374bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman goto free_card; 375bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 3766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_decode_cid(card); 3776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 3787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 3806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Select card, as all following commands rely on that. 3817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 3827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_select_card(card); 38317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 3857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 3876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 3886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Fetch SCR from card. 3896abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 3906abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_app_send_scr(card, card->raw_scr); 39117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto free_card; 3937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 394bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman err = mmc_decode_scr(card); 395bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman if (err < 0) 396bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman goto free_card; 3977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 3996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Fetch switch information from card. 4006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 4016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_read_switch(card); 40217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 4036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto free_card; 4046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 4051addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 4061addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman /* 4071addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Attempt to change to high-speed (if supported) 4087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 4097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_switch_hs(card); 41017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 4117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 4127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 4147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Compute bus speed. 4157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 4167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman max_dtr = (unsigned int)-1; 4177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (mmc_card_highspeed(card)) { 4197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (max_dtr > card->sw_caps.hs_max_dtr) 4207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman max_dtr = card->sw_caps.hs_max_dtr; 4217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else if (max_dtr > card->csd.max_dtr) { 4227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman max_dtr = card->csd.max_dtr; 4237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 4247ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_set_clock(host, max_dtr); 4267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 4287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Switch to wider bus (if supported). 4297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 43071651297a448289353b2493c6c3c183f9be7be7cPierre Ossman if ((host->caps & MMC_CAP_4_BIT_DATA) && 4317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 4327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 43317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 4347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 4357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 4377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 4387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 439c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman /* 440c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman * Check if read-only switch is active. 441c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman */ 442c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman if (!oldcard) { 443c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman if (!host->ops->get_ro) { 444c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman printk(KERN_WARNING "%s: host does not " 445c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman "support reading read-only " 446c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman "switch. assuming write-enable.\n", 447c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman mmc_hostname(host)); 448c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman } else { 449c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman if (host->ops->get_ro(host)) 450c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman mmc_card_set_readonly(card); 451c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman } 452c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman } 453c3bff2ec10b8bf2f53c954e370f9bdae93064472Pierre Ossman 4546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 4556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = card; 4566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 45717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 4586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanfree_card: 4606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 4616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(card); 4626abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanerr: 4636abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 464adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 4656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 4666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 4686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Host is being removed. Free up the current card. 4696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 4706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_remove(struct mmc_host *host) 4716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 4726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 4736abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 4746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 4766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = NULL; 4776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 4786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 4806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Card detection callback from host. 4816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 4826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_detect(struct mmc_host *host) 4836abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 4846abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 4856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 4876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 4886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4896abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 4906abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 4916abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 4926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Just check if our card has been removed. 4936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 4946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_status(host->card, NULL); 4957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_release_host(host); 4977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 49817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 4994101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 5006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 5026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 5036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 5046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 5056abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 5066abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5074101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 5084101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman card->raw_cid[2], card->raw_cid[3]); 5094101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 5104101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman card->raw_csd[2], card->raw_csd[3]); 5114101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); 5124101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(date, "%02d/%04d\n", card->cid.month, card->cid.year); 5134101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(fwrev, "0x%x\n", card->cid.fwrev); 5144101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(hwrev, "0x%x\n", card->cid.hwrev); 5154101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(manfid, "0x%06x\n", card->cid.manfid); 5164101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(name, "%s\n", card->cid.prod_name); 5174101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(oemid, "0x%04x\n", card->cid.oemid); 5184101c16a910b15afd190c6bc7d45864461cf5c25Pierre OssmanMMC_ATTR_FN(serial, "0x%08x\n", card->cid.serial); 5194101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman 5204101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossmanstatic struct device_attribute mmc_sd_dev_attrs[] = { 5214101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(cid), 5224101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(csd), 5234101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(scr), 5244101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(date), 5254101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(fwrev), 5264101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(hwrev), 5274101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(manfid), 5284101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(name), 5294101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(oemid), 5304101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman MMC_ATTR_RO(serial), 5314101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman __ATTR_NULL, 5324101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman}; 5334101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman 5344101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman/* 5354101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman * Adds sysfs entries as relevant. 5364101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman */ 5374101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossmanstatic int mmc_sd_sysfs_add(struct mmc_host *host, struct mmc_card *card) 5384101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman{ 5394101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman int ret; 5404101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman 5414101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman ret = mmc_add_attrs(card, mmc_sd_dev_attrs); 5424101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman if (ret < 0) 5434101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman return ret; 5444101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman 5454101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman return 0; 5464101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman} 5474101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman 5484101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman/* 5494101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman * Removes the sysfs entries added by mmc_sysfs_add(). 5504101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman */ 5514101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossmanstatic void mmc_sd_sysfs_remove(struct mmc_host *host, struct mmc_card *card) 5524101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman{ 5534101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_remove_attrs(card, mmc_sd_dev_attrs); 5544101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman} 5554101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman 5566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman#ifdef CONFIG_MMC_UNSAFE_RESUME 5576abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 5596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Suspend callback from host. 5606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 5616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_suspend(struct mmc_host *host) 5626abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 5636abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 5646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 5656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 5676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_deselect_cards(host); 5686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card->state &= ~MMC_STATE_HIGHSPEED; 5696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 5706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 5716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 5736abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Resume callback from host. 5746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * 5756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * This function tries to determine if the same card is still present 5766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * and, if so, restore all state to it. 5776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 5786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_resume(struct mmc_host *host) 5796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 5806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 5816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 5836abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 5846abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 5866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, host->card); 5872986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_release_host(host); 5882986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 58917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 5904101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 5912986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 5922986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 5936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 5942986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_release_host(host); 5956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 5966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 5986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 5996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman#else 6006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman#define mmc_sd_suspend NULL 6026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman#define mmc_sd_resume NULL 6036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman#endif 6056abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6066abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic const struct mmc_bus_ops mmc_sd_ops = { 6076abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .remove = mmc_sd_remove, 6086abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .detect = mmc_sd_detect, 6094101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman .sysfs_add = mmc_sd_sysfs_add, 6104101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman .sysfs_remove = mmc_sd_sysfs_remove, 6116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .suspend = mmc_sd_suspend, 6126abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .resume = mmc_sd_resume, 6136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman}; 6146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 6166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Starting point for SD card init. 6176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 6186abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanint mmc_attach_sd(struct mmc_host *host, u32 ocr) 6196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 6206abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 6216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 6236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->claimed); 6246abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6256abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_attach_bus(host, &mmc_sd_ops); 6266abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6276abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 6286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Sanity check the voltages that the card claims to 6296abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * support. 6306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 6316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (ocr & 0x7F) { 6326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman printk(KERN_WARNING "%s: card claims to support voltages " 6336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "below the defined range. These will be ignored.\n", 6346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_hostname(host)); 6356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~0x7F; 6366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 6376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6386abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (ocr & MMC_VDD_165_195) { 6396abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman printk(KERN_WARNING "%s: SD card claims to support the " 6406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "incompletely defined 'low voltage range'. This " 6416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "will be ignored.\n", mmc_hostname(host)); 6426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~MMC_VDD_165_195; 6436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 6446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 6466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 6486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Can we support the voltage(s) of the card(s)? 6496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 650109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman if (!host->ocr) { 651109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman err = -EINVAL; 6526abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 653109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman } 6546abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 6566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Detect and init the card. 6576abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 6586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, NULL); 65917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 6606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 6616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6626abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 6636abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6644101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman err = mmc_add_card(host->card); 6657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (err) 6662986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman goto remove_card; 6677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return 0; 6697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6702986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossmanremove_card: 6716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 6727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman host->card = NULL; 6732986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 6747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanerr: 6757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_detach_bus(host); 6767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_release_host(host); 6777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 678109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman printk(KERN_ERR "%s: error %d whilst initialising SD card\n", 679109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman mmc_hostname(host), err); 680109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman 681adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 6827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 6837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 684