Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/mmc/sdio.c |
| 3 | * |
| 4 | * Copyright 2006-2007 Pierre Ossman |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or (at |
| 9 | * your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/err.h> |
Dmitry Shmidt | 7aa92ea | 2009-07-29 10:22:03 -0700 | [diff] [blame] | 13 | #include <linux/module.h> |
Ohad Ben-Cohen | 81968561 | 2010-10-02 13:54:10 +0200 | [diff] [blame] | 14 | #include <linux/pm_runtime.h> |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 15 | |
| 16 | #include <linux/mmc/host.h> |
| 17 | #include <linux/mmc/card.h> |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 18 | #include <linux/mmc/mmc.h> |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 19 | #include <linux/mmc/sdio.h> |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 20 | #include <linux/mmc/sdio_func.h> |
Ohad Ben-Cohen | eab4068 | 2011-04-05 17:50:14 +0300 | [diff] [blame] | 21 | #include <linux/mmc/sdio_ids.h> |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 22 | |
| 23 | #include "core.h" |
| 24 | #include "bus.h" |
Andrew Bresticker | 4a623fb | 2015-11-10 14:11:46 -0800 | [diff] [blame] | 25 | #include "host.h" |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 26 | #include "sd.h" |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 27 | #include "sdio_bus.h" |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 28 | #include "mmc_ops.h" |
| 29 | #include "sd_ops.h" |
| 30 | #include "sdio_ops.h" |
Nicolas Pitre | b726126 | 2007-06-16 02:04:16 -0400 | [diff] [blame] | 31 | #include "sdio_cis.h" |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 32 | |
San Mehat | 2b6be3a | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 33 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 34 | #include <linux/mmc/sdio_ids.h> |
| 35 | #endif |
| 36 | |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 37 | static int sdio_read_fbr(struct sdio_func *func) |
| 38 | { |
| 39 | int ret; |
| 40 | unsigned char data; |
| 41 | |
Ohad Ben-Cohen | eab4068 | 2011-04-05 17:50:14 +0300 | [diff] [blame] | 42 | if (mmc_card_nonstd_func_interface(func->card)) { |
| 43 | func->class = SDIO_CLASS_NONE; |
| 44 | return 0; |
| 45 | } |
| 46 | |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 47 | ret = mmc_io_rw_direct(func->card, 0, 0, |
David Vrabel | 7616ee9 | 2007-08-08 14:23:05 +0100 | [diff] [blame] | 48 | SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data); |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 49 | if (ret) |
| 50 | goto out; |
| 51 | |
| 52 | data &= 0x0f; |
| 53 | |
| 54 | if (data == 0x0f) { |
| 55 | ret = mmc_io_rw_direct(func->card, 0, 0, |
David Vrabel | 7616ee9 | 2007-08-08 14:23:05 +0100 | [diff] [blame] | 56 | SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data); |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 57 | if (ret) |
| 58 | goto out; |
| 59 | } |
| 60 | |
| 61 | func->class = data; |
| 62 | |
| 63 | out: |
| 64 | return ret; |
| 65 | } |
| 66 | |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 67 | static int sdio_init_func(struct mmc_card *card, unsigned int fn) |
| 68 | { |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 69 | int ret; |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 70 | struct sdio_func *func; |
| 71 | |
| 72 | BUG_ON(fn > SDIO_MAX_FUNCS); |
| 73 | |
| 74 | func = sdio_alloc_func(card); |
| 75 | if (IS_ERR(func)) |
| 76 | return PTR_ERR(func); |
| 77 | |
| 78 | func->num = fn; |
| 79 | |
Grazvydas Ignotas | 6f51be3 | 2010-08-10 18:01:50 -0700 | [diff] [blame] | 80 | if (!(card->quirks & MMC_QUIRK_NONSTD_SDIO)) { |
| 81 | ret = sdio_read_fbr(func); |
| 82 | if (ret) |
| 83 | goto fail; |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 84 | |
Grazvydas Ignotas | 6f51be3 | 2010-08-10 18:01:50 -0700 | [diff] [blame] | 85 | ret = sdio_read_func_cis(func); |
| 86 | if (ret) |
| 87 | goto fail; |
| 88 | } else { |
| 89 | func->vendor = func->card->cis.vendor; |
| 90 | func->device = func->card->cis.device; |
| 91 | func->max_blksize = func->card->cis.blksize; |
| 92 | } |
Nicolas Pitre | b726126 | 2007-06-16 02:04:16 -0400 | [diff] [blame] | 93 | |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 94 | card->sdio_func[fn - 1] = func; |
| 95 | |
| 96 | return 0; |
Pierre Ossman | 0597007 | 2007-06-11 21:01:00 +0200 | [diff] [blame] | 97 | |
| 98 | fail: |
| 99 | /* |
| 100 | * It is okay to remove the function here even though we hold |
| 101 | * the host lock as we haven't registered the device yet. |
| 102 | */ |
| 103 | sdio_remove_func(func); |
| 104 | return ret; |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 105 | } |
| 106 | |
Philip Rakity | 2d0d68f | 2012-01-26 06:57:10 -0800 | [diff] [blame] | 107 | static int sdio_read_cccr(struct mmc_card *card, u32 ocr) |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 108 | { |
| 109 | int ret; |
| 110 | int cccr_vsn; |
Philip Rakity | 2d0d68f | 2012-01-26 06:57:10 -0800 | [diff] [blame] | 111 | int uhs = ocr & R4_18V_PRESENT; |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 112 | unsigned char data; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 113 | unsigned char speed; |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 114 | |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 115 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CCCR, 0, &data); |
| 116 | if (ret) |
| 117 | goto out; |
| 118 | |
| 119 | cccr_vsn = data & 0x0f; |
| 120 | |
Bing Zhao | b4625da | 2011-10-20 19:16:32 -0700 | [diff] [blame] | 121 | if (cccr_vsn > SDIO_CCCR_REV_3_00) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 122 | pr_err("%s: unrecognised CCCR structure version %d\n", |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 123 | mmc_hostname(card->host), cccr_vsn); |
| 124 | return -EINVAL; |
| 125 | } |
| 126 | |
| 127 | card->cccr.sdio_vsn = (data & 0xf0) >> 4; |
| 128 | |
| 129 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CAPS, 0, &data); |
| 130 | if (ret) |
| 131 | goto out; |
| 132 | |
| 133 | if (data & SDIO_CCCR_CAP_SMB) |
| 134 | card->cccr.multi_block = 1; |
| 135 | if (data & SDIO_CCCR_CAP_LSC) |
| 136 | card->cccr.low_speed = 1; |
| 137 | if (data & SDIO_CCCR_CAP_4BLS) |
| 138 | card->cccr.wide_bus = 1; |
| 139 | |
| 140 | if (cccr_vsn >= SDIO_CCCR_REV_1_10) { |
| 141 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_POWER, 0, &data); |
| 142 | if (ret) |
| 143 | goto out; |
| 144 | |
| 145 | if (data & SDIO_POWER_SMPC) |
| 146 | card->cccr.high_power = 1; |
| 147 | } |
| 148 | |
| 149 | if (cccr_vsn >= SDIO_CCCR_REV_1_20) { |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 150 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 151 | if (ret) |
| 152 | goto out; |
| 153 | |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 154 | card->scr.sda_spec3 = 0; |
| 155 | card->sw_caps.sd3_bus_mode = 0; |
| 156 | card->sw_caps.sd3_drv_type = 0; |
Philip Rakity | 2d0d68f | 2012-01-26 06:57:10 -0800 | [diff] [blame] | 157 | if (cccr_vsn >= SDIO_CCCR_REV_3_00 && uhs) { |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 158 | card->scr.sda_spec3 = 1; |
| 159 | ret = mmc_io_rw_direct(card, 0, 0, |
| 160 | SDIO_CCCR_UHS, 0, &data); |
| 161 | if (ret) |
| 162 | goto out; |
| 163 | |
Sujit Reddy Thumma | 41875e3 | 2012-12-04 17:06:19 +0530 | [diff] [blame] | 164 | if (mmc_host_uhs(card->host)) { |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 165 | if (data & SDIO_UHS_DDR50) |
| 166 | card->sw_caps.sd3_bus_mode |
| 167 | |= SD_MODE_UHS_DDR50; |
| 168 | |
| 169 | if (data & SDIO_UHS_SDR50) |
| 170 | card->sw_caps.sd3_bus_mode |
| 171 | |= SD_MODE_UHS_SDR50; |
| 172 | |
| 173 | if (data & SDIO_UHS_SDR104) |
| 174 | card->sw_caps.sd3_bus_mode |
| 175 | |= SD_MODE_UHS_SDR104; |
| 176 | } |
| 177 | |
| 178 | ret = mmc_io_rw_direct(card, 0, 0, |
| 179 | SDIO_CCCR_DRIVE_STRENGTH, 0, &data); |
| 180 | if (ret) |
| 181 | goto out; |
| 182 | |
| 183 | if (data & SDIO_DRIVE_SDTA) |
| 184 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_A; |
| 185 | if (data & SDIO_DRIVE_SDTC) |
| 186 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C; |
| 187 | if (data & SDIO_DRIVE_SDTD) |
| 188 | card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D; |
| 189 | } |
| 190 | |
| 191 | /* if no uhs mode ensure we check for high speed */ |
| 192 | if (!card->sw_caps.sd3_bus_mode) { |
| 193 | if (speed & SDIO_SPEED_SHS) { |
| 194 | card->cccr.high_speed = 1; |
| 195 | card->sw_caps.hs_max_dtr = 50000000; |
| 196 | } else { |
| 197 | card->cccr.high_speed = 0; |
| 198 | card->sw_caps.hs_max_dtr = 25000000; |
| 199 | } |
| 200 | } |
Pierre Ossman | 35c66c1 | 2007-06-11 20:25:43 +0200 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | out: |
| 204 | return ret; |
| 205 | } |
| 206 | |
Pierre Ossman | 4ff6471 | 2007-07-30 18:23:53 +0200 | [diff] [blame] | 207 | static int sdio_enable_wide(struct mmc_card *card) |
| 208 | { |
| 209 | int ret; |
| 210 | u8 ctrl; |
| 211 | |
| 212 | if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) |
| 213 | return 0; |
| 214 | |
| 215 | if (card->cccr.low_speed && !card->cccr.wide_bus) |
| 216 | return 0; |
| 217 | |
| 218 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); |
| 219 | if (ret) |
| 220 | return ret; |
| 221 | |
Yong Ding | 2a0fe91 | 2012-05-15 13:09:43 +0800 | [diff] [blame] | 222 | if ((ctrl & SDIO_BUS_WIDTH_MASK) == SDIO_BUS_WIDTH_RESERVED) |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 223 | pr_warn("%s: SDIO_CCCR_IF is invalid: 0x%02x\n", |
| 224 | mmc_hostname(card->host), ctrl); |
Yong Ding | 2a0fe91 | 2012-05-15 13:09:43 +0800 | [diff] [blame] | 225 | |
| 226 | /* set as 4-bit bus width */ |
| 227 | ctrl &= ~SDIO_BUS_WIDTH_MASK; |
Pierre Ossman | 4ff6471 | 2007-07-30 18:23:53 +0200 | [diff] [blame] | 228 | ctrl |= SDIO_BUS_WIDTH_4BIT; |
| 229 | |
| 230 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); |
| 231 | if (ret) |
| 232 | return ret; |
| 233 | |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 234 | return 1; |
Pierre Ossman | 4ff6471 | 2007-07-30 18:23:53 +0200 | [diff] [blame] | 235 | } |
| 236 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 237 | /* |
Ohad Ben-Cohen | 006ebd5 | 2009-09-22 16:45:07 -0700 | [diff] [blame] | 238 | * If desired, disconnect the pull-up resistor on CD/DAT[3] (pin 1) |
| 239 | * of the card. This may be required on certain setups of boards, |
| 240 | * controllers and embedded sdio device which do not need the card's |
| 241 | * pull-up. As a result, card detection is disabled and power is saved. |
| 242 | */ |
| 243 | static int sdio_disable_cd(struct mmc_card *card) |
| 244 | { |
| 245 | int ret; |
| 246 | u8 ctrl; |
| 247 | |
Ohad Ben-Cohen | 2059a02 | 2011-04-05 18:02:25 +0300 | [diff] [blame] | 248 | if (!mmc_card_disable_cd(card)) |
Ohad Ben-Cohen | 006ebd5 | 2009-09-22 16:45:07 -0700 | [diff] [blame] | 249 | return 0; |
| 250 | |
| 251 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); |
| 252 | if (ret) |
| 253 | return ret; |
| 254 | |
| 255 | ctrl |= SDIO_BUS_CD_DISABLE; |
| 256 | |
| 257 | return mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); |
| 258 | } |
| 259 | |
| 260 | /* |
Daniel Drake | 6b5eda3 | 2010-03-05 13:43:34 -0800 | [diff] [blame] | 261 | * Devices that remain active during a system suspend are |
| 262 | * put back into 1-bit mode. |
| 263 | */ |
| 264 | static int sdio_disable_wide(struct mmc_card *card) |
| 265 | { |
| 266 | int ret; |
| 267 | u8 ctrl; |
| 268 | |
| 269 | if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) |
| 270 | return 0; |
| 271 | |
| 272 | if (card->cccr.low_speed && !card->cccr.wide_bus) |
| 273 | return 0; |
| 274 | |
| 275 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); |
| 276 | if (ret) |
| 277 | return ret; |
| 278 | |
| 279 | if (!(ctrl & SDIO_BUS_WIDTH_4BIT)) |
| 280 | return 0; |
| 281 | |
| 282 | ctrl &= ~SDIO_BUS_WIDTH_4BIT; |
| 283 | ctrl |= SDIO_BUS_ASYNC_INT; |
| 284 | |
| 285 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); |
| 286 | if (ret) |
| 287 | return ret; |
| 288 | |
| 289 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_1); |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 294 | |
| 295 | static int sdio_enable_4bit_bus(struct mmc_card *card) |
| 296 | { |
| 297 | int err; |
| 298 | |
| 299 | if (card->type == MMC_TYPE_SDIO) |
NeilBrown | 303dbed | 2015-02-24 13:42:23 +1100 | [diff] [blame] | 300 | err = sdio_enable_wide(card); |
| 301 | else if ((card->host->caps & MMC_CAP_4_BIT_DATA) && |
| 302 | (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 303 | err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); |
| 304 | if (err) |
| 305 | return err; |
NeilBrown | 303dbed | 2015-02-24 13:42:23 +1100 | [diff] [blame] | 306 | err = sdio_enable_wide(card); |
| 307 | if (err <= 0) |
| 308 | mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1); |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 309 | } else |
| 310 | return 0; |
| 311 | |
NeilBrown | 303dbed | 2015-02-24 13:42:23 +1100 | [diff] [blame] | 312 | if (err > 0) { |
| 313 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); |
| 314 | err = 0; |
| 315 | } |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 316 | |
| 317 | return err; |
| 318 | } |
| 319 | |
| 320 | |
Daniel Drake | 6b5eda3 | 2010-03-05 13:43:34 -0800 | [diff] [blame] | 321 | /* |
Pierre Ossman | d16f577 | 2008-08-31 17:22:46 +0200 | [diff] [blame] | 322 | * Test if the card supports high-speed mode and, if so, switch to it. |
| 323 | */ |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 324 | static int mmc_sdio_switch_hs(struct mmc_card *card, int enable) |
Pierre Ossman | d16f577 | 2008-08-31 17:22:46 +0200 | [diff] [blame] | 325 | { |
| 326 | int ret; |
| 327 | u8 speed; |
| 328 | |
| 329 | if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) |
| 330 | return 0; |
| 331 | |
| 332 | if (!card->cccr.high_speed) |
| 333 | return 0; |
| 334 | |
| 335 | ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); |
| 336 | if (ret) |
| 337 | return ret; |
| 338 | |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 339 | if (enable) |
| 340 | speed |= SDIO_SPEED_EHS; |
| 341 | else |
| 342 | speed &= ~SDIO_SPEED_EHS; |
Pierre Ossman | d16f577 | 2008-08-31 17:22:46 +0200 | [diff] [blame] | 343 | |
| 344 | ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); |
| 345 | if (ret) |
| 346 | return ret; |
| 347 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 348 | return 1; |
| 349 | } |
Pierre Ossman | d16f577 | 2008-08-31 17:22:46 +0200 | [diff] [blame] | 350 | |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 351 | /* |
| 352 | * Enable SDIO/combo card's high-speed mode. Return 0/1 if [not]supported. |
| 353 | */ |
| 354 | static int sdio_enable_hs(struct mmc_card *card) |
| 355 | { |
| 356 | int ret; |
| 357 | |
| 358 | ret = mmc_sdio_switch_hs(card, true); |
| 359 | if (ret <= 0 || card->type == MMC_TYPE_SDIO) |
| 360 | return ret; |
| 361 | |
| 362 | ret = mmc_sd_switch_hs(card); |
| 363 | if (ret <= 0) |
| 364 | mmc_sdio_switch_hs(card, false); |
| 365 | |
| 366 | return ret; |
| 367 | } |
| 368 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 369 | static unsigned mmc_sdio_get_max_clock(struct mmc_card *card) |
| 370 | { |
| 371 | unsigned max_dtr; |
| 372 | |
Seungwon Jeon | cdc9917 | 2014-04-23 17:07:35 +0900 | [diff] [blame] | 373 | if (mmc_card_hs(card)) { |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 374 | /* |
| 375 | * The SDIO specification doesn't mention how |
| 376 | * the CIS transfer speed register relates to |
| 377 | * high-speed, but it seems that 50 MHz is |
| 378 | * mandatory. |
| 379 | */ |
| 380 | max_dtr = 50000000; |
| 381 | } else { |
| 382 | max_dtr = card->cis.max_dtr; |
| 383 | } |
| 384 | |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 385 | if (card->type == MMC_TYPE_SD_COMBO) |
| 386 | max_dtr = min(max_dtr, mmc_sd_get_max_clock(card)); |
| 387 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 388 | return max_dtr; |
Pierre Ossman | d16f577 | 2008-08-31 17:22:46 +0200 | [diff] [blame] | 389 | } |
| 390 | |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 391 | static unsigned char host_drive_to_sdio_drive(int host_strength) |
| 392 | { |
| 393 | switch (host_strength) { |
| 394 | case MMC_SET_DRIVER_TYPE_A: |
| 395 | return SDIO_DTSx_SET_TYPE_A; |
| 396 | case MMC_SET_DRIVER_TYPE_B: |
| 397 | return SDIO_DTSx_SET_TYPE_B; |
| 398 | case MMC_SET_DRIVER_TYPE_C: |
| 399 | return SDIO_DTSx_SET_TYPE_C; |
| 400 | case MMC_SET_DRIVER_TYPE_D: |
| 401 | return SDIO_DTSx_SET_TYPE_D; |
| 402 | default: |
| 403 | return SDIO_DTSx_SET_TYPE_B; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | static void sdio_select_driver_type(struct mmc_card *card) |
| 408 | { |
Adrian Hunter | fa021ce | 2015-02-06 14:12:53 +0200 | [diff] [blame] | 409 | int card_drv_type, drive_strength, drv_type; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 410 | unsigned char card_strength; |
| 411 | int err; |
| 412 | |
Adrian Hunter | 3853a04 | 2015-02-06 14:12:56 +0200 | [diff] [blame] | 413 | card->drive_strength = 0; |
| 414 | |
Adrian Hunter | fa021ce | 2015-02-06 14:12:53 +0200 | [diff] [blame] | 415 | card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 416 | |
Adrian Hunter | e23350b | 2015-02-06 14:12:55 +0200 | [diff] [blame] | 417 | drive_strength = mmc_select_drive_strength(card, |
| 418 | card->sw_caps.uhs_max_dtr, |
| 419 | card_drv_type, &drv_type); |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 420 | |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 421 | if (drive_strength) { |
| 422 | /* if error just use default for drive strength B */ |
| 423 | err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_DRIVE_STRENGTH, 0, |
| 424 | &card_strength); |
| 425 | if (err) |
| 426 | return; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 427 | |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 428 | card_strength &= ~(SDIO_DRIVE_DTSx_MASK<<SDIO_DRIVE_DTSx_SHIFT); |
| 429 | card_strength |= host_drive_to_sdio_drive(drive_strength); |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 430 | |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 431 | /* if error default to drive strength B */ |
| 432 | err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_DRIVE_STRENGTH, |
| 433 | card_strength, NULL); |
| 434 | if (err) |
| 435 | return; |
Adrian Hunter | 3853a04 | 2015-02-06 14:12:56 +0200 | [diff] [blame] | 436 | card->drive_strength = drive_strength; |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 437 | } |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 438 | |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 439 | if (drv_type) |
| 440 | mmc_set_driver_type(card->host, drv_type); |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | |
| 444 | static int sdio_set_bus_speed_mode(struct mmc_card *card) |
| 445 | { |
| 446 | unsigned int bus_speed, timing; |
| 447 | int err; |
| 448 | unsigned char speed; |
| 449 | |
| 450 | /* |
| 451 | * If the host doesn't support any of the UHS-I modes, fallback on |
| 452 | * default speed. |
| 453 | */ |
Sujit Reddy Thumma | 41875e3 | 2012-12-04 17:06:19 +0530 | [diff] [blame] | 454 | if (!mmc_host_uhs(card->host)) |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 455 | return 0; |
| 456 | |
| 457 | bus_speed = SDIO_SPEED_SDR12; |
| 458 | timing = MMC_TIMING_UHS_SDR12; |
| 459 | if ((card->host->caps & MMC_CAP_UHS_SDR104) && |
| 460 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { |
| 461 | bus_speed = SDIO_SPEED_SDR104; |
| 462 | timing = MMC_TIMING_UHS_SDR104; |
| 463 | card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; |
Subhash Jadavani | 77e2ff0 | 2012-12-04 17:06:20 +0530 | [diff] [blame] | 464 | card->sd_bus_speed = UHS_SDR104_BUS_SPEED; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 465 | } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && |
| 466 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { |
| 467 | bus_speed = SDIO_SPEED_DDR50; |
| 468 | timing = MMC_TIMING_UHS_DDR50; |
| 469 | card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; |
Subhash Jadavani | 77e2ff0 | 2012-12-04 17:06:20 +0530 | [diff] [blame] | 470 | card->sd_bus_speed = UHS_DDR50_BUS_SPEED; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 471 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
| 472 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & |
| 473 | SD_MODE_UHS_SDR50)) { |
| 474 | bus_speed = SDIO_SPEED_SDR50; |
| 475 | timing = MMC_TIMING_UHS_SDR50; |
| 476 | card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; |
Subhash Jadavani | 77e2ff0 | 2012-12-04 17:06:20 +0530 | [diff] [blame] | 477 | card->sd_bus_speed = UHS_SDR50_BUS_SPEED; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 478 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
| 479 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && |
| 480 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { |
| 481 | bus_speed = SDIO_SPEED_SDR25; |
| 482 | timing = MMC_TIMING_UHS_SDR25; |
| 483 | card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; |
Subhash Jadavani | 77e2ff0 | 2012-12-04 17:06:20 +0530 | [diff] [blame] | 484 | card->sd_bus_speed = UHS_SDR25_BUS_SPEED; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 485 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
| 486 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | |
| 487 | MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & |
| 488 | SD_MODE_UHS_SDR12)) { |
| 489 | bus_speed = SDIO_SPEED_SDR12; |
| 490 | timing = MMC_TIMING_UHS_SDR12; |
| 491 | card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; |
Subhash Jadavani | 77e2ff0 | 2012-12-04 17:06:20 +0530 | [diff] [blame] | 492 | card->sd_bus_speed = UHS_SDR12_BUS_SPEED; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); |
| 496 | if (err) |
| 497 | return err; |
| 498 | |
| 499 | speed &= ~SDIO_SPEED_BSS_MASK; |
| 500 | speed |= bus_speed; |
| 501 | err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); |
| 502 | if (err) |
| 503 | return err; |
| 504 | |
| 505 | if (bus_speed) { |
| 506 | mmc_set_timing(card->host, timing); |
| 507 | mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); |
| 508 | } |
| 509 | |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | * UHS-I specific initialization procedure |
| 515 | */ |
| 516 | static int mmc_sdio_init_uhs_card(struct mmc_card *card) |
| 517 | { |
| 518 | int err; |
| 519 | |
| 520 | if (!card->scr.sda_spec3) |
| 521 | return 0; |
| 522 | |
| 523 | /* |
| 524 | * Switch to wider bus (if supported). |
| 525 | */ |
NeilBrown | 303dbed | 2015-02-24 13:42:23 +1100 | [diff] [blame] | 526 | if (card->host->caps & MMC_CAP_4_BIT_DATA) |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 527 | err = sdio_enable_4bit_bus(card); |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 528 | |
| 529 | /* Set the driver strength for the card */ |
| 530 | sdio_select_driver_type(card); |
| 531 | |
| 532 | /* Set bus speed mode of the card */ |
| 533 | err = sdio_set_bus_speed_mode(card); |
| 534 | if (err) |
| 535 | goto out; |
| 536 | |
Fredrik Soderstedt | 810e08e | 2013-04-17 13:50:53 +0200 | [diff] [blame] | 537 | /* |
| 538 | * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and |
| 539 | * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. |
| 540 | */ |
Adrian Hunter | 63e415c | 2014-12-05 19:40:59 +0200 | [diff] [blame] | 541 | if (!mmc_host_is_spi(card->host) && |
Carlo Caione | e10c321 | 2016-01-13 09:36:55 +0100 | [diff] [blame] | 542 | ((card->host->ios.timing == MMC_TIMING_UHS_SDR50) || |
| 543 | (card->host->ios.timing == MMC_TIMING_UHS_SDR104))) |
Adrian Hunter | 63e415c | 2014-12-05 19:40:59 +0200 | [diff] [blame] | 544 | err = mmc_execute_tuning(card); |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 545 | out: |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 546 | return err; |
| 547 | } |
| 548 | |
Pierre Ossman | d16f577 | 2008-08-31 17:22:46 +0200 | [diff] [blame] | 549 | /* |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 550 | * Handle the detection and initialisation of a card. |
| 551 | * |
| 552 | * In the case of a resume, "oldcard" will contain the card |
| 553 | * we're trying to reinitialise. |
| 554 | */ |
| 555 | static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, |
Chris Ball | 3bca4cf7 | 2010-03-05 13:43:33 -0800 | [diff] [blame] | 556 | struct mmc_card *oldcard, int powered_resume) |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 557 | { |
| 558 | struct mmc_card *card; |
| 559 | int err; |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 560 | int retries = 10; |
Ulf Hansson | db4a0d0 | 2013-09-13 10:49:34 +0200 | [diff] [blame] | 561 | u32 rocr = 0; |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 562 | u32 ocr_card = ocr; |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 563 | |
| 564 | BUG_ON(!host); |
| 565 | WARN_ON(!host->claimed); |
| 566 | |
Ulf Hansson | db4a0d0 | 2013-09-13 10:49:34 +0200 | [diff] [blame] | 567 | /* to query card if 1.8V signalling is supported */ |
| 568 | if (mmc_host_uhs(host)) |
| 569 | ocr |= R4_18V_PRESENT; |
| 570 | |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 571 | try_again: |
| 572 | if (!retries) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 573 | pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 574 | ocr &= ~R4_18V_PRESENT; |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 575 | } |
| 576 | |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 577 | /* |
| 578 | * Inform the card of the voltage |
| 579 | */ |
Chris Ball | 3bca4cf7 | 2010-03-05 13:43:33 -0800 | [diff] [blame] | 580 | if (!powered_resume) { |
Ulf Hansson | db4a0d0 | 2013-09-13 10:49:34 +0200 | [diff] [blame] | 581 | err = mmc_send_io_op_cond(host, ocr, &rocr); |
Chris Ball | 3bca4cf7 | 2010-03-05 13:43:33 -0800 | [diff] [blame] | 582 | if (err) |
| 583 | goto err; |
| 584 | } |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 585 | |
| 586 | /* |
| 587 | * For SPI, enable CRC as appropriate. |
| 588 | */ |
| 589 | if (mmc_host_is_spi(host)) { |
| 590 | err = mmc_spi_set_crc(host, use_spi_crc); |
| 591 | if (err) |
| 592 | goto err; |
| 593 | } |
| 594 | |
| 595 | /* |
| 596 | * Allocate card structure. |
| 597 | */ |
| 598 | card = mmc_alloc_card(host, NULL); |
| 599 | if (IS_ERR(card)) { |
| 600 | err = PTR_ERR(card); |
| 601 | goto err; |
| 602 | } |
| 603 | |
Ulf Hansson | db4a0d0 | 2013-09-13 10:49:34 +0200 | [diff] [blame] | 604 | if ((rocr & R4_MEMORY_PRESENT) && |
| 605 | mmc_sd_get_cid(host, ocr & rocr, card->raw_cid, NULL) == 0) { |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 606 | card->type = MMC_TYPE_SD_COMBO; |
| 607 | |
| 608 | if (oldcard && (oldcard->type != MMC_TYPE_SD_COMBO || |
| 609 | memcmp(card->raw_cid, oldcard->raw_cid, sizeof(card->raw_cid)) != 0)) { |
| 610 | mmc_remove_card(card); |
| 611 | return -ENOENT; |
| 612 | } |
| 613 | } else { |
| 614 | card->type = MMC_TYPE_SDIO; |
| 615 | |
| 616 | if (oldcard && oldcard->type != MMC_TYPE_SDIO) { |
| 617 | mmc_remove_card(card); |
| 618 | return -ENOENT; |
| 619 | } |
| 620 | } |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 621 | |
| 622 | /* |
Daniel Mack | 3fcb027 | 2010-04-01 10:03:25 +0200 | [diff] [blame] | 623 | * Call the optional HC's init_card function to handle quirks. |
| 624 | */ |
| 625 | if (host->ops->init_card) |
| 626 | host->ops->init_card(host, card); |
| 627 | |
| 628 | /* |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 629 | * If the host and card support UHS-I mode request the card |
| 630 | * to switch to 1.8V signaling level. No 1.8v signalling if |
Masanari Iida | 7122bbb | 2012-08-05 23:25:40 +0900 | [diff] [blame] | 631 | * UHS mode is not enabled to maintain compatibility and some |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 632 | * systems that claim 1.8v signalling in fact do not support |
| 633 | * it. |
| 634 | */ |
Ulf Hansson | db4a0d0 | 2013-09-13 10:49:34 +0200 | [diff] [blame] | 635 | if (!powered_resume && (rocr & ocr & R4_18V_PRESENT)) { |
Ulf Hansson | 0f791fd | 2013-09-12 15:36:34 +0200 | [diff] [blame] | 636 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, |
Adrian Hunter | d9bfbb9 | 2015-11-26 14:00:47 +0200 | [diff] [blame] | 637 | ocr_card); |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 638 | if (err == -EAGAIN) { |
| 639 | sdio_reset(host); |
| 640 | mmc_go_idle(host); |
| 641 | mmc_send_if_cond(host, host->ocr_avail); |
| 642 | mmc_remove_card(card); |
| 643 | retries--; |
| 644 | goto try_again; |
| 645 | } else if (err) { |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 646 | ocr &= ~R4_18V_PRESENT; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 647 | } |
| 648 | err = 0; |
| 649 | } else { |
| 650 | ocr &= ~R4_18V_PRESENT; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 651 | } |
| 652 | |
| 653 | /* |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 654 | * For native busses: set card RCA and quit open drain mode. |
| 655 | */ |
Chris Ball | 3bca4cf7 | 2010-03-05 13:43:33 -0800 | [diff] [blame] | 656 | if (!powered_resume && !mmc_host_is_spi(host)) { |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 657 | err = mmc_send_relative_addr(host, &card->rca); |
| 658 | if (err) |
| 659 | goto remove; |
| 660 | |
Stefan Nilsson XK | 0aab399 | 2011-03-01 14:41:04 +0100 | [diff] [blame] | 661 | /* |
| 662 | * Update oldcard with the new RCA received from the SDIO |
| 663 | * device -- we're doing this so that it's updated in the |
| 664 | * "card" struct when oldcard overwrites that later. |
| 665 | */ |
| 666 | if (oldcard) |
| 667 | oldcard->rca = card->rca; |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | /* |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 671 | * Read CSD, before selecting the card |
| 672 | */ |
| 673 | if (!oldcard && card->type == MMC_TYPE_SD_COMBO) { |
| 674 | err = mmc_sd_get_csd(host, card); |
| 675 | if (err) |
| 676 | return err; |
| 677 | |
| 678 | mmc_decode_cid(card); |
| 679 | } |
| 680 | |
| 681 | /* |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 682 | * Select card, as all following commands rely on that. |
| 683 | */ |
Chris Ball | 3bca4cf7 | 2010-03-05 13:43:33 -0800 | [diff] [blame] | 684 | if (!powered_resume && !mmc_host_is_spi(host)) { |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 685 | err = mmc_select_card(card); |
| 686 | if (err) |
| 687 | goto remove; |
| 688 | } |
| 689 | |
Grazvydas Ignotas | 6f51be3 | 2010-08-10 18:01:50 -0700 | [diff] [blame] | 690 | if (card->quirks & MMC_QUIRK_NONSTD_SDIO) { |
| 691 | /* |
| 692 | * This is non-standard SDIO device, meaning it doesn't |
| 693 | * have any CIA (Common I/O area) registers present. |
| 694 | * It's host's responsibility to fill cccr and cis |
| 695 | * structures in init_card(). |
| 696 | */ |
| 697 | mmc_set_clock(host, card->cis.max_dtr); |
| 698 | |
| 699 | if (card->cccr.high_speed) { |
Grazvydas Ignotas | 6f51be3 | 2010-08-10 18:01:50 -0700 | [diff] [blame] | 700 | mmc_set_timing(card->host, MMC_TIMING_SD_HS); |
| 701 | } |
| 702 | |
| 703 | goto finish; |
| 704 | } |
| 705 | |
San Mehat | 2b6be3a | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 706 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 707 | if (host->embedded_sdio_data.cccr) |
| 708 | memcpy(&card->cccr, host->embedded_sdio_data.cccr, sizeof(struct sdio_cccr)); |
| 709 | else { |
| 710 | #endif |
| 711 | /* |
| 712 | * Read the common registers. |
| 713 | */ |
| 714 | err = sdio_read_cccr(card, ocr); |
| 715 | if (err) |
| 716 | goto remove; |
| 717 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 718 | } |
| 719 | #endif |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 720 | |
San Mehat | 2b6be3a | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 721 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 722 | if (host->embedded_sdio_data.cis) |
| 723 | memcpy(&card->cis, host->embedded_sdio_data.cis, sizeof(struct sdio_cis)); |
| 724 | else { |
| 725 | #endif |
| 726 | /* |
| 727 | * Read the common CIS tuples. |
| 728 | */ |
| 729 | err = sdio_read_common_cis(card); |
| 730 | if (err) |
| 731 | goto remove; |
| 732 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 733 | } |
| 734 | #endif |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 735 | |
| 736 | if (oldcard) { |
| 737 | int same = (card->cis.vendor == oldcard->cis.vendor && |
| 738 | card->cis.device == oldcard->cis.device); |
| 739 | mmc_remove_card(card); |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 740 | if (!same) |
| 741 | return -ENOENT; |
| 742 | |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 743 | card = oldcard; |
| 744 | } |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 745 | card->ocr = ocr_card; |
Andrei Warkentin | 32780cd | 2011-04-11 17:02:15 -0500 | [diff] [blame] | 746 | mmc_fixup_device(card, NULL); |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 747 | |
Michal Miroslaw | 7310ece8 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 748 | if (card->type == MMC_TYPE_SD_COMBO) { |
| 749 | err = mmc_sd_setup_card(host, card, oldcard != NULL); |
| 750 | /* handle as SDIO-only card if memory init failed */ |
| 751 | if (err) { |
| 752 | mmc_go_idle(host); |
| 753 | if (mmc_host_is_spi(host)) |
| 754 | /* should not fail, as it worked previously */ |
| 755 | mmc_spi_set_crc(host, use_spi_crc); |
| 756 | card->type = MMC_TYPE_SDIO; |
| 757 | } else |
| 758 | card->dev.type = &sd_type; |
| 759 | } |
| 760 | |
| 761 | /* |
| 762 | * If needed, disconnect card detection pull-up resistor. |
| 763 | */ |
| 764 | err = sdio_disable_cd(card); |
| 765 | if (err) |
| 766 | goto remove; |
| 767 | |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 768 | /* Initialization sequence for UHS-I cards */ |
| 769 | /* Only if card supports 1.8v and UHS signaling */ |
| 770 | if ((ocr & R4_18V_PRESENT) && card->sw_caps.sd3_bus_mode) { |
| 771 | err = mmc_sdio_init_uhs_card(card); |
| 772 | if (err) |
| 773 | goto remove; |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 774 | } else { |
| 775 | /* |
| 776 | * Switch to high-speed (if supported). |
| 777 | */ |
| 778 | err = sdio_enable_hs(card); |
| 779 | if (err > 0) |
Seungwon Jeon | cdc9917 | 2014-04-23 17:07:35 +0900 | [diff] [blame] | 780 | mmc_set_timing(card->host, MMC_TIMING_SD_HS); |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 781 | else if (err) |
| 782 | goto remove; |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 783 | |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 784 | /* |
| 785 | * Change to the card's maximum speed. |
| 786 | */ |
| 787 | mmc_set_clock(host, mmc_sdio_get_max_clock(card)); |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 788 | |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 789 | /* |
| 790 | * Switch to wider bus (if supported). |
| 791 | */ |
| 792 | err = sdio_enable_4bit_bus(card); |
NeilBrown | 303dbed | 2015-02-24 13:42:23 +1100 | [diff] [blame] | 793 | if (err) |
Philip Rakity | a303c53 | 2011-11-14 19:14:38 -0800 | [diff] [blame] | 794 | goto remove; |
| 795 | } |
Grazvydas Ignotas | 6f51be3 | 2010-08-10 18:01:50 -0700 | [diff] [blame] | 796 | finish: |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 797 | if (!oldcard) |
| 798 | host->card = card; |
| 799 | return 0; |
| 800 | |
| 801 | remove: |
| 802 | if (!oldcard) |
| 803 | mmc_remove_card(card); |
| 804 | |
| 805 | err: |
| 806 | return err; |
| 807 | } |
| 808 | |
| 809 | /* |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 810 | * Host is being removed. Free up the current card. |
| 811 | */ |
| 812 | static void mmc_sdio_remove(struct mmc_host *host) |
| 813 | { |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 814 | int i; |
| 815 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 816 | BUG_ON(!host); |
| 817 | BUG_ON(!host->card); |
| 818 | |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 819 | for (i = 0;i < host->card->sdio_funcs;i++) { |
| 820 | if (host->card->sdio_func[i]) { |
| 821 | sdio_remove_func(host->card->sdio_func[i]); |
| 822 | host->card->sdio_func[i] = NULL; |
| 823 | } |
| 824 | } |
| 825 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 826 | mmc_remove_card(host->card); |
| 827 | host->card = NULL; |
| 828 | } |
| 829 | |
| 830 | /* |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 831 | * Card detection - card is alive. |
| 832 | */ |
| 833 | static int mmc_sdio_alive(struct mmc_host *host) |
| 834 | { |
| 835 | return mmc_select_card(host->card); |
| 836 | } |
| 837 | |
| 838 | /* |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 839 | * Card detection callback from host. |
| 840 | */ |
| 841 | static void mmc_sdio_detect(struct mmc_host *host) |
| 842 | { |
| 843 | int err; |
| 844 | |
| 845 | BUG_ON(!host); |
| 846 | BUG_ON(!host->card); |
| 847 | |
Ohad Ben-Cohen | 87973ba | 2010-10-02 13:54:12 +0200 | [diff] [blame] | 848 | /* Make sure card is powered before detecting it */ |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 849 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
| 850 | err = pm_runtime_get_sync(&host->card->dev); |
Li Fei | 3bffb80 | 2013-04-08 09:36:39 +0800 | [diff] [blame] | 851 | if (err < 0) { |
| 852 | pm_runtime_put_noidle(&host->card->dev); |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 853 | goto out; |
Li Fei | 3bffb80 | 2013-04-08 09:36:39 +0800 | [diff] [blame] | 854 | } |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 855 | } |
Ohad Ben-Cohen | 87973ba | 2010-10-02 13:54:12 +0200 | [diff] [blame] | 856 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 857 | mmc_claim_host(host); |
| 858 | |
| 859 | /* |
| 860 | * Just check if our card has been removed. |
| 861 | */ |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 862 | err = _mmc_detect_card_removed(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 863 | |
| 864 | mmc_release_host(host); |
| 865 | |
Ohad Ben-Cohen | 4d0812c | 2010-11-14 12:40:33 +0200 | [diff] [blame] | 866 | /* |
| 867 | * Tell PM core it's OK to power off the card now. |
| 868 | * |
| 869 | * The _sync variant is used in order to ensure that the card |
| 870 | * is left powered off in case an error occurred, and the card |
| 871 | * is going to be removed. |
| 872 | * |
| 873 | * Since there is no specific reason to believe a new user |
| 874 | * is about to show up at this point, the _sync variant is |
| 875 | * desirable anyway. |
| 876 | */ |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 877 | if (host->caps & MMC_CAP_POWER_OFF_CARD) |
| 878 | pm_runtime_put_sync(&host->card->dev); |
Ohad Ben-Cohen | 4d0812c | 2010-11-14 12:40:33 +0200 | [diff] [blame] | 879 | |
Ohad Ben-Cohen | 87973ba | 2010-10-02 13:54:12 +0200 | [diff] [blame] | 880 | out: |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 881 | if (err) { |
| 882 | mmc_sdio_remove(host); |
| 883 | |
| 884 | mmc_claim_host(host); |
| 885 | mmc_detach_bus(host); |
Ulf Hansson | 7f7e412 | 2011-09-21 14:08:13 -0400 | [diff] [blame] | 886 | mmc_power_off(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 887 | mmc_release_host(host); |
| 888 | } |
| 889 | } |
| 890 | |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 891 | /* |
Ulf Hansson | 810cadd | 2013-06-10 17:03:37 +0200 | [diff] [blame] | 892 | * SDIO pre_suspend. We need to suspend all functions separately. |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 893 | * Therefore all registered functions must have drivers with suspend |
| 894 | * and resume methods. Failing that we simply remove the whole card. |
| 895 | */ |
Ulf Hansson | 810cadd | 2013-06-10 17:03:37 +0200 | [diff] [blame] | 896 | static int mmc_sdio_pre_suspend(struct mmc_host *host) |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 897 | { |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 898 | int i, err = 0; |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 899 | |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 900 | for (i = 0; i < host->card->sdio_funcs; i++) { |
| 901 | struct sdio_func *func = host->card->sdio_func[i]; |
| 902 | if (func && sdio_func_present(func) && func->dev.driver) { |
| 903 | const struct dev_pm_ops *pmops = func->dev.driver->pm; |
| 904 | if (!pmops || !pmops->suspend || !pmops->resume) { |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 905 | /* force removal of entire card in that case */ |
| 906 | err = -ENOSYS; |
Ulf Hansson | 810cadd | 2013-06-10 17:03:37 +0200 | [diff] [blame] | 907 | break; |
| 908 | } |
| 909 | } |
| 910 | } |
| 911 | |
| 912 | return err; |
| 913 | } |
| 914 | |
| 915 | /* |
| 916 | * SDIO suspend. Suspend all functions separately. |
| 917 | */ |
| 918 | static int mmc_sdio_suspend(struct mmc_host *host) |
| 919 | { |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 920 | mmc_claim_host(host); |
| 921 | |
| 922 | if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) |
Daniel Drake | 6b5eda3 | 2010-03-05 13:43:34 -0800 | [diff] [blame] | 923 | sdio_disable_wide(host->card); |
Daniel Drake | 6b5eda3 | 2010-03-05 13:43:34 -0800 | [diff] [blame] | 924 | |
Adrian Hunter | 79d5a65 | 2015-05-07 13:10:13 +0300 | [diff] [blame] | 925 | if (!mmc_card_keep_power(host)) { |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 926 | mmc_power_off(host); |
Adrian Hunter | 79d5a65 | 2015-05-07 13:10:13 +0300 | [diff] [blame] | 927 | } else if (host->retune_period) { |
| 928 | mmc_retune_timer_stop(host); |
| 929 | mmc_retune_needed(host); |
| 930 | } |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 931 | |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 932 | mmc_release_host(host); |
| 933 | |
Ulf Hansson | 573185c | 2014-02-28 12:49:00 +0100 | [diff] [blame] | 934 | return 0; |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 935 | } |
| 936 | |
| 937 | static int mmc_sdio_resume(struct mmc_host *host) |
| 938 | { |
Ulf Hansson | 573185c | 2014-02-28 12:49:00 +0100 | [diff] [blame] | 939 | int err = 0; |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 940 | |
| 941 | BUG_ON(!host); |
| 942 | BUG_ON(!host->card); |
| 943 | |
| 944 | /* Basic card reinitialization. */ |
| 945 | mmc_claim_host(host); |
Ohad Ben-Cohen | 080bc97 | 2010-11-28 07:21:29 +0200 | [diff] [blame] | 946 | |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 947 | /* Restore power if needed */ |
| 948 | if (!mmc_card_keep_power(host)) { |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 949 | mmc_power_up(host, host->card->ocr); |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 950 | /* |
| 951 | * Tell runtime PM core we just powered up the card, |
| 952 | * since it still believes the card is powered off. |
| 953 | * Note that currently runtime PM is only enabled |
| 954 | * for SDIO cards that are MMC_CAP_POWER_OFF_CARD |
| 955 | */ |
| 956 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
| 957 | pm_runtime_disable(&host->card->dev); |
| 958 | pm_runtime_set_active(&host->card->dev); |
| 959 | pm_runtime_enable(&host->card->dev); |
| 960 | } |
| 961 | } |
| 962 | |
Ohad Ben-Cohen | 080bc97 | 2010-11-28 07:21:29 +0200 | [diff] [blame] | 963 | /* No need to reinitialize powered-resumed nonremovable cards */ |
Subhash Jadavani | 51aa66a | 2012-12-04 17:06:18 +0530 | [diff] [blame] | 964 | if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) { |
| 965 | sdio_reset(host); |
| 966 | mmc_go_idle(host); |
NeilBrown | 006fc51 | 2014-11-12 14:55:19 +1100 | [diff] [blame] | 967 | mmc_send_if_cond(host, host->card->ocr); |
| 968 | err = mmc_send_io_op_cond(host, 0, NULL); |
| 969 | if (!err) |
| 970 | err = mmc_sdio_init_card(host, host->card->ocr, |
| 971 | host->card, |
| 972 | mmc_card_keep_power(host)); |
Subhash Jadavani | 51aa66a | 2012-12-04 17:06:18 +0530 | [diff] [blame] | 973 | } else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) { |
Ohad Ben-Cohen | 080bc97 | 2010-11-28 07:21:29 +0200 | [diff] [blame] | 974 | /* We may have switched to 1-bit mode during suspend */ |
| 975 | err = sdio_enable_4bit_bus(host->card); |
Ohad Ben-Cohen | 080bc97 | 2010-11-28 07:21:29 +0200 | [diff] [blame] | 976 | } |
| 977 | |
Fu Zhonghui | dea67c4 | 2014-08-18 10:48:14 +0800 | [diff] [blame] | 978 | if (!err && host->sdio_irqs) { |
Ulf Hansson | 9eadcc0 | 2015-10-02 10:56:11 +0200 | [diff] [blame] | 979 | if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) |
Fu Zhonghui | dea67c4 | 2014-08-18 10:48:14 +0800 | [diff] [blame] | 980 | wake_up_process(host->sdio_irq_thread); |
Ulf Hansson | 9eadcc0 | 2015-10-02 10:56:11 +0200 | [diff] [blame] | 981 | else if (host->caps & MMC_CAP_SDIO_IRQ) |
Fu Zhonghui | dea67c4 | 2014-08-18 10:48:14 +0800 | [diff] [blame] | 982 | host->ops->enable_sdio_irq(host, 1); |
Fu Zhonghui | dea67c4 | 2014-08-18 10:48:14 +0800 | [diff] [blame] | 983 | } |
| 984 | |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 985 | mmc_release_host(host); |
| 986 | |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 987 | host->pm_flags &= ~MMC_PM_KEEP_POWER; |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 988 | return err; |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 989 | } |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 990 | |
Ohad Ben-Cohen | d3fe37b | 2010-10-02 13:54:07 +0200 | [diff] [blame] | 991 | static int mmc_sdio_power_restore(struct mmc_host *host) |
| 992 | { |
| 993 | int ret; |
| 994 | |
| 995 | BUG_ON(!host); |
| 996 | BUG_ON(!host->card); |
| 997 | |
| 998 | mmc_claim_host(host); |
Daniel Drake | c6e633a | 2011-06-25 19:20:11 +0100 | [diff] [blame] | 999 | |
| 1000 | /* |
| 1001 | * Reset the card by performing the same steps that are taken by |
| 1002 | * mmc_rescan_try_freq() and mmc_attach_sdio() during a "normal" probe. |
| 1003 | * |
| 1004 | * sdio_reset() is technically not needed. Having just powered up the |
| 1005 | * hardware, it should already be in reset state. However, some |
| 1006 | * platforms (such as SD8686 on OLPC) do not instantly cut power, |
| 1007 | * meaning that a reset is required when restoring power soon after |
| 1008 | * powering off. It is harmless in other cases. |
| 1009 | * |
| 1010 | * The CMD5 reset (mmc_send_io_op_cond()), according to the SDIO spec, |
| 1011 | * is not necessary for non-removable cards. However, it is required |
| 1012 | * for OLPC SD8686 (which expects a [CMD5,5,3,7] init sequence), and |
| 1013 | * harmless in other situations. |
| 1014 | * |
Daniel Drake | c6e633a | 2011-06-25 19:20:11 +0100 | [diff] [blame] | 1015 | */ |
Ulf Hansson | e774747 | 2012-03-01 13:18:05 +0100 | [diff] [blame] | 1016 | |
Daniel Drake | c6e633a | 2011-06-25 19:20:11 +0100 | [diff] [blame] | 1017 | sdio_reset(host); |
| 1018 | mmc_go_idle(host); |
NeilBrown | 59b6c9e | 2014-11-12 14:55:19 +1100 | [diff] [blame] | 1019 | mmc_send_if_cond(host, host->card->ocr); |
Daniel Drake | c6e633a | 2011-06-25 19:20:11 +0100 | [diff] [blame] | 1020 | |
Ulf Hansson | ce69d37 | 2013-09-16 11:28:42 +0200 | [diff] [blame] | 1021 | ret = mmc_send_io_op_cond(host, 0, NULL); |
Daniel Drake | c6e633a | 2011-06-25 19:20:11 +0100 | [diff] [blame] | 1022 | if (ret) |
| 1023 | goto out; |
| 1024 | |
Ulf Hansson | ce69d37 | 2013-09-16 11:28:42 +0200 | [diff] [blame] | 1025 | ret = mmc_sdio_init_card(host, host->card->ocr, host->card, |
Ohad Ben-Cohen | a5e9425 | 2011-04-05 17:43:20 +0300 | [diff] [blame] | 1026 | mmc_card_keep_power(host)); |
Ohad Ben-Cohen | d3fe37b | 2010-10-02 13:54:07 +0200 | [diff] [blame] | 1027 | if (!ret && host->sdio_irqs) |
| 1028 | mmc_signal_sdio_irq(host); |
Daniel Drake | c6e633a | 2011-06-25 19:20:11 +0100 | [diff] [blame] | 1029 | |
| 1030 | out: |
Ohad Ben-Cohen | d3fe37b | 2010-10-02 13:54:07 +0200 | [diff] [blame] | 1031 | mmc_release_host(host); |
| 1032 | |
| 1033 | return ret; |
| 1034 | } |
| 1035 | |
Ulf Hansson | 12d01d0 | 2013-05-02 14:02:37 +0200 | [diff] [blame] | 1036 | static int mmc_sdio_runtime_suspend(struct mmc_host *host) |
| 1037 | { |
| 1038 | /* No references to the card, cut the power to it. */ |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 1039 | mmc_claim_host(host); |
Ulf Hansson | 12d01d0 | 2013-05-02 14:02:37 +0200 | [diff] [blame] | 1040 | mmc_power_off(host); |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 1041 | mmc_release_host(host); |
| 1042 | |
Ulf Hansson | 12d01d0 | 2013-05-02 14:02:37 +0200 | [diff] [blame] | 1043 | return 0; |
| 1044 | } |
| 1045 | |
| 1046 | static int mmc_sdio_runtime_resume(struct mmc_host *host) |
| 1047 | { |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 1048 | int ret; |
| 1049 | |
Ulf Hansson | 12d01d0 | 2013-05-02 14:02:37 +0200 | [diff] [blame] | 1050 | /* Restore power and re-initialize. */ |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 1051 | mmc_claim_host(host); |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1052 | mmc_power_up(host, host->card->ocr); |
Ulf Hansson | 8d1ffc8c | 2015-09-11 14:41:55 +0200 | [diff] [blame] | 1053 | ret = mmc_sdio_power_restore(host); |
| 1054 | mmc_release_host(host); |
| 1055 | |
| 1056 | return ret; |
Ulf Hansson | 12d01d0 | 2013-05-02 14:02:37 +0200 | [diff] [blame] | 1057 | } |
| 1058 | |
Andreas Fenkart | 1fb654f | 2015-04-23 13:15:42 +0200 | [diff] [blame] | 1059 | static int mmc_sdio_reset(struct mmc_host *host) |
| 1060 | { |
| 1061 | mmc_power_cycle(host, host->card->ocr); |
| 1062 | return mmc_sdio_power_restore(host); |
| 1063 | } |
| 1064 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1065 | static const struct mmc_bus_ops mmc_sdio_ops = { |
| 1066 | .remove = mmc_sdio_remove, |
| 1067 | .detect = mmc_sdio_detect, |
Ulf Hansson | 810cadd | 2013-06-10 17:03:37 +0200 | [diff] [blame] | 1068 | .pre_suspend = mmc_sdio_pre_suspend, |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 1069 | .suspend = mmc_sdio_suspend, |
| 1070 | .resume = mmc_sdio_resume, |
Ulf Hansson | 12d01d0 | 2013-05-02 14:02:37 +0200 | [diff] [blame] | 1071 | .runtime_suspend = mmc_sdio_runtime_suspend, |
| 1072 | .runtime_resume = mmc_sdio_runtime_resume, |
Ohad Ben-Cohen | d3fe37b | 2010-10-02 13:54:07 +0200 | [diff] [blame] | 1073 | .power_restore = mmc_sdio_power_restore, |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1074 | .alive = mmc_sdio_alive, |
Andreas Fenkart | 1fb654f | 2015-04-23 13:15:42 +0200 | [diff] [blame] | 1075 | .reset = mmc_sdio_reset, |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1076 | }; |
| 1077 | |
| 1078 | |
| 1079 | /* |
| 1080 | * Starting point for SDIO card init. |
| 1081 | */ |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1082 | int mmc_attach_sdio(struct mmc_host *host) |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1083 | { |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1084 | int err, i, funcs; |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1085 | u32 ocr, rocr; |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1086 | struct mmc_card *card; |
| 1087 | |
| 1088 | BUG_ON(!host); |
Pierre Ossman | d84075c8 | 2007-08-09 13:23:56 +0200 | [diff] [blame] | 1089 | WARN_ON(!host->claimed); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1090 | |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1091 | err = mmc_send_io_op_cond(host, 0, &ocr); |
| 1092 | if (err) |
| 1093 | return err; |
| 1094 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1095 | mmc_attach_bus(host, &mmc_sdio_ops); |
Takashi Iwai | 8f230f4 | 2010-12-08 10:04:30 +0100 | [diff] [blame] | 1096 | if (host->ocr_avail_sdio) |
| 1097 | host->ocr_avail = host->ocr_avail_sdio; |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1098 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1099 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1100 | rocr = mmc_select_voltage(host, ocr); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1101 | |
| 1102 | /* |
| 1103 | * Can we support the voltage(s) of the card(s)? |
| 1104 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1105 | if (!rocr) { |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1106 | err = -EINVAL; |
| 1107 | goto err; |
| 1108 | } |
| 1109 | |
| 1110 | /* |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 1111 | * Detect and init the card. |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1112 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1113 | err = mmc_sdio_init_card(host, rocr, NULL, 0); |
Ulf Hansson | ec2ed70 | 2013-09-12 16:38:56 +0200 | [diff] [blame] | 1114 | if (err) |
| 1115 | goto err; |
| 1116 | |
Nicolas Pitre | 17d33e1 | 2009-09-22 16:45:28 -0700 | [diff] [blame] | 1117 | card = host->card; |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1118 | |
| 1119 | /* |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 1120 | * Enable runtime PM only if supported by host+card+board |
Ohad Ben-Cohen | 81968561 | 2010-10-02 13:54:10 +0200 | [diff] [blame] | 1121 | */ |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 1122 | if (host->caps & MMC_CAP_POWER_OFF_CARD) { |
| 1123 | /* |
| 1124 | * Let runtime PM core know our card is active |
| 1125 | */ |
| 1126 | err = pm_runtime_set_active(&card->dev); |
| 1127 | if (err) |
| 1128 | goto remove; |
Ohad Ben-Cohen | 81968561 | 2010-10-02 13:54:10 +0200 | [diff] [blame] | 1129 | |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 1130 | /* |
| 1131 | * Enable runtime PM for this card |
| 1132 | */ |
| 1133 | pm_runtime_enable(&card->dev); |
| 1134 | } |
Ohad Ben-Cohen | 81968561 | 2010-10-02 13:54:10 +0200 | [diff] [blame] | 1135 | |
| 1136 | /* |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1137 | * The number of functions on the card is encoded inside |
| 1138 | * the ocr. |
| 1139 | */ |
Matt Fleming | e881279 | 2009-12-17 15:27:18 -0800 | [diff] [blame] | 1140 | funcs = (ocr & 0x70000000) >> 28; |
| 1141 | card->sdio_funcs = 0; |
Pierre Ossman | 4ff6471 | 2007-07-30 18:23:53 +0200 | [diff] [blame] | 1142 | |
San Mehat | 2b6be3a | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 1143 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 1144 | if (host->embedded_sdio_data.funcs) |
| 1145 | card->sdio_funcs = funcs = host->embedded_sdio_data.num_funcs; |
| 1146 | #endif |
| 1147 | |
Pierre Ossman | 4ff6471 | 2007-07-30 18:23:53 +0200 | [diff] [blame] | 1148 | /* |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1149 | * Initialize (but don't add) all present functions. |
| 1150 | */ |
Matt Fleming | e881279 | 2009-12-17 15:27:18 -0800 | [diff] [blame] | 1151 | for (i = 0; i < funcs; i++, card->sdio_funcs++) { |
San Mehat | 2b6be3a | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 1152 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 1153 | if (host->embedded_sdio_data.funcs) { |
| 1154 | struct sdio_func *tmp; |
Ohad Ben-Cohen | 40bba0c | 2010-10-02 13:54:11 +0200 | [diff] [blame] | 1155 | |
San Mehat | 2b6be3a | 2008-04-14 15:22:49 -0700 | [diff] [blame] | 1156 | tmp = sdio_alloc_func(host->card); |
| 1157 | if (IS_ERR(tmp)) |
| 1158 | goto remove; |
| 1159 | tmp->num = (i + 1); |
| 1160 | card->sdio_func[i] = tmp; |
| 1161 | tmp->class = host->embedded_sdio_data.funcs[i].f_class; |
| 1162 | tmp->max_blksize = host->embedded_sdio_data.funcs[i].f_maxblksize; |
| 1163 | tmp->vendor = card->cis.vendor; |
| 1164 | tmp->device = card->cis.device; |
| 1165 | } else { |
| 1166 | #endif |
| 1167 | err = sdio_init_func(host->card, i + 1); |
| 1168 | if (err) |
| 1169 | goto remove; |
| 1170 | #ifdef CONFIG_MMC_EMBEDDED_SDIO |
| 1171 | } |
| 1172 | #endif |
Ohad Ben-Cohen | 40bba0c | 2010-10-02 13:54:11 +0200 | [diff] [blame] | 1173 | /* |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 1174 | * Enable Runtime PM for this func (if supported) |
Ohad Ben-Cohen | 40bba0c | 2010-10-02 13:54:11 +0200 | [diff] [blame] | 1175 | */ |
Ohad Ben-Cohen | ed919b0 | 2010-11-19 09:29:09 +0200 | [diff] [blame] | 1176 | if (host->caps & MMC_CAP_POWER_OFF_CARD) |
| 1177 | pm_runtime_enable(&card->sdio_func[i]->dev); |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1178 | } |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1179 | |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1180 | /* |
| 1181 | * First add the card to the driver model... |
| 1182 | */ |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1183 | mmc_release_host(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1184 | err = mmc_add_card(host->card); |
| 1185 | if (err) |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1186 | goto remove_added; |
| 1187 | |
| 1188 | /* |
| 1189 | * ...then the SDIO functions. |
| 1190 | */ |
| 1191 | for (i = 0;i < funcs;i++) { |
| 1192 | err = sdio_add_func(host->card->sdio_func[i]); |
| 1193 | if (err) |
| 1194 | goto remove_added; |
| 1195 | } |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1196 | |
Dmitry Shmidt | 3449791 | 2011-03-03 17:40:10 -0500 | [diff] [blame] | 1197 | mmc_claim_host(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1198 | return 0; |
| 1199 | |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1200 | |
| 1201 | remove_added: |
| 1202 | /* Remove without lock if the device has been added. */ |
| 1203 | mmc_sdio_remove(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1204 | mmc_claim_host(host); |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1205 | remove: |
| 1206 | /* And with lock if it hasn't been added. */ |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1207 | mmc_release_host(host); |
Pierre Ossman | e29a7d7 | 2007-05-26 13:48:18 +0200 | [diff] [blame] | 1208 | if (host->card) |
| 1209 | mmc_sdio_remove(host); |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1210 | mmc_claim_host(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1211 | err: |
| 1212 | mmc_detach_bus(host); |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1213 | |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 1214 | pr_err("%s: error %d whilst initialising SDIO card\n", |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1215 | mmc_hostname(host), err); |
| 1216 | |
| 1217 | return err; |
| 1218 | } |
| 1219 | |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1220 | int sdio_reset_comm(struct mmc_card *card) |
| 1221 | { |
| 1222 | struct mmc_host *host = card->host; |
| 1223 | u32 ocr; |
Colin Cross | 5b7f909 | 2014-03-19 12:46:49 -0700 | [diff] [blame] | 1224 | u32 rocr; |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1225 | int err; |
| 1226 | |
| 1227 | printk("%s():\n", __func__); |
Dmitry Shmidt | 7aa92ea | 2009-07-29 10:22:03 -0700 | [diff] [blame] | 1228 | mmc_claim_host(host); |
| 1229 | |
Andrew Bresticker | 4a623fb | 2015-11-10 14:11:46 -0800 | [diff] [blame] | 1230 | mmc_retune_disable(host); |
| 1231 | |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1232 | mmc_go_idle(host); |
| 1233 | |
| 1234 | mmc_set_clock(host, host->f_min); |
| 1235 | |
| 1236 | err = mmc_send_io_op_cond(host, 0, &ocr); |
| 1237 | if (err) |
| 1238 | goto err; |
| 1239 | |
Colin Cross | 5b7f909 | 2014-03-19 12:46:49 -0700 | [diff] [blame] | 1240 | rocr = mmc_select_voltage(host, ocr); |
| 1241 | if (!rocr) { |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1242 | err = -EINVAL; |
| 1243 | goto err; |
| 1244 | } |
| 1245 | |
Colin Cross | 5b7f909 | 2014-03-19 12:46:49 -0700 | [diff] [blame] | 1246 | err = mmc_sdio_init_card(host, rocr, card, 0); |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1247 | if (err) |
| 1248 | goto err; |
| 1249 | |
Dmitry Shmidt | 7aa92ea | 2009-07-29 10:22:03 -0700 | [diff] [blame] | 1250 | mmc_release_host(host); |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1251 | return 0; |
Dmitry Shmidt | 7aa92ea | 2009-07-29 10:22:03 -0700 | [diff] [blame] | 1252 | err: |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1253 | printk("%s: Error resetting SDIO communications (%d)\n", |
| 1254 | mmc_hostname(host), err); |
Dmitry Shmidt | 7aa92ea | 2009-07-29 10:22:03 -0700 | [diff] [blame] | 1255 | mmc_release_host(host); |
San Mehat | 938571b | 2008-05-15 09:15:37 -0700 | [diff] [blame] | 1256 | return err; |
| 1257 | } |
| 1258 | EXPORT_SYMBOL(sdio_reset_comm); |