Lines Matching +full:no +full:- +full:sdio
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * linux/drivers/mmc/sdio.c
5 * Copyright 2006-2007 Pierre Ossman
14 #include <linux/mmc/sdio.h>
30 MMC_DEV_ATTR(vendor, "0x%04x\n", card->cis.vendor);
31 MMC_DEV_ATTR(device, "0x%04x\n", card->cis.device);
32 MMC_DEV_ATTR(revision, "%u.%u\n", card->major_rev, card->minor_rev);
33 MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr);
34 MMC_DEV_ATTR(rca, "0x%04x\n", card->rca);
41 if (num > card->num_info) \
42 return -ENODATA; \
43 if (!card->info[num-1][0]) \
45 return sprintf(buf, "%s\n", card->info[num-1]); \
77 if (mmc_card_nonstd_func_interface(func->card)) { in sdio_read_fbr()
78 func->class = SDIO_CLASS_NONE; in sdio_read_fbr()
82 ret = mmc_io_rw_direct(func->card, 0, 0, in sdio_read_fbr()
83 SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data); in sdio_read_fbr()
90 ret = mmc_io_rw_direct(func->card, 0, 0, in sdio_read_fbr()
91 SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data); in sdio_read_fbr()
96 func->class = data; in sdio_read_fbr()
108 return -EINVAL; in sdio_init_func()
114 func->num = fn; in sdio_init_func()
116 if (!(card->quirks & MMC_QUIRK_NONSTD_SDIO)) { in sdio_init_func()
125 func->vendor = func->card->cis.vendor; in sdio_init_func()
126 func->device = func->card->cis.device; in sdio_init_func()
127 func->max_blksize = func->card->cis.blksize; in sdio_init_func()
130 card->sdio_func[fn - 1] = func; in sdio_init_func()
159 mmc_hostname(card->host), cccr_vsn); in sdio_read_cccr()
160 return -EINVAL; in sdio_read_cccr()
163 card->cccr.sdio_vsn = (data & 0xf0) >> 4; in sdio_read_cccr()
170 card->cccr.multi_block = 1; in sdio_read_cccr()
172 card->cccr.low_speed = 1; in sdio_read_cccr()
174 card->cccr.wide_bus = 1; in sdio_read_cccr()
182 card->cccr.high_power = 1; in sdio_read_cccr()
190 card->scr.sda_spec3 = 0; in sdio_read_cccr()
191 card->sw_caps.sd3_bus_mode = 0; in sdio_read_cccr()
192 card->sw_caps.sd3_drv_type = 0; in sdio_read_cccr()
194 card->scr.sda_spec3 = 1; in sdio_read_cccr()
200 if (mmc_host_uhs(card->host)) { in sdio_read_cccr()
202 card->sw_caps.sd3_bus_mode in sdio_read_cccr()
207 card->sw_caps.sd3_bus_mode in sdio_read_cccr()
212 card->sw_caps.sd3_bus_mode in sdio_read_cccr()
223 card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_A; in sdio_read_cccr()
225 card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C; in sdio_read_cccr()
227 card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D; in sdio_read_cccr()
230 /* if no uhs mode ensure we check for high speed */ in sdio_read_cccr()
231 if (!card->sw_caps.sd3_bus_mode) { in sdio_read_cccr()
233 card->cccr.high_speed = 1; in sdio_read_cccr()
234 card->sw_caps.hs_max_dtr = 50000000; in sdio_read_cccr()
236 card->cccr.high_speed = 0; in sdio_read_cccr()
237 card->sw_caps.hs_max_dtr = 25000000; in sdio_read_cccr()
251 if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) in sdio_enable_wide()
254 if (card->cccr.low_speed && !card->cccr.wide_bus) in sdio_enable_wide()
263 mmc_hostname(card->host), ctrl); in sdio_enable_wide()
265 /* set as 4-bit bus width */ in sdio_enable_wide()
277 * If desired, disconnect the pull-up resistor on CD/DAT[3] (pin 1)
279 * controllers and embedded sdio device which do not need the card's
280 * pull-up. As a result, card detection is disabled and power is saved.
301 * put back into 1-bit mode.
308 if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) in sdio_disable_wide()
311 if (card->cccr.low_speed && !card->cccr.wide_bus) in sdio_disable_wide()
328 mmc_set_bus_width(card->host, MMC_BUS_WIDTH_1); in sdio_disable_wide()
337 if (card->type == MMC_TYPE_SDIO) in sdio_disable_4bit_bus()
340 if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) in sdio_disable_4bit_bus()
343 if (!(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) in sdio_disable_4bit_bus()
362 if (card->type == MMC_TYPE_SDIO) in sdio_enable_4bit_bus()
365 if (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4) { in sdio_enable_4bit_bus()
373 mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); in sdio_enable_4bit_bus()
380 * Test if the card supports high-speed mode and, if so, switch to it.
387 if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) in mmc_sdio_switch_hs()
390 if (!card->cccr.high_speed) in mmc_sdio_switch_hs()
410 * Enable SDIO/combo card's high-speed mode. Return 0/1 if [not]supported.
417 if (ret <= 0 || card->type == MMC_TYPE_SDIO) in sdio_enable_hs()
433 * The SDIO specification doesn't mention how in mmc_sdio_get_max_clock()
435 * high-speed, but it seems that 50 MHz is in mmc_sdio_get_max_clock()
440 max_dtr = card->cis.max_dtr; in mmc_sdio_get_max_clock()
443 if (card->type == MMC_TYPE_SD_COMBO) in mmc_sdio_get_max_clock()
471 card->drive_strength = 0; in sdio_select_driver_type()
473 card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; in sdio_select_driver_type()
476 card->sw_caps.uhs_max_dtr, in sdio_select_driver_type()
494 card->drive_strength = drive_strength; in sdio_select_driver_type()
498 mmc_set_driver_type(card->host, drv_type); in sdio_select_driver_type()
510 * If the host doesn't support any of the UHS-I modes, fallback on in sdio_set_bus_speed_mode()
513 if (!mmc_host_uhs(card->host)) in sdio_set_bus_speed_mode()
518 if ((card->host->caps & MMC_CAP_UHS_SDR104) && in sdio_set_bus_speed_mode()
519 (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { in sdio_set_bus_speed_mode()
522 card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; in sdio_set_bus_speed_mode()
523 card->sd_bus_speed = UHS_SDR104_BUS_SPEED; in sdio_set_bus_speed_mode()
524 } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && in sdio_set_bus_speed_mode()
525 (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { in sdio_set_bus_speed_mode()
528 card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; in sdio_set_bus_speed_mode()
529 card->sd_bus_speed = UHS_DDR50_BUS_SPEED; in sdio_set_bus_speed_mode()
530 } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | in sdio_set_bus_speed_mode()
531 MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & in sdio_set_bus_speed_mode()
535 card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; in sdio_set_bus_speed_mode()
536 card->sd_bus_speed = UHS_SDR50_BUS_SPEED; in sdio_set_bus_speed_mode()
537 } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | in sdio_set_bus_speed_mode()
539 (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { in sdio_set_bus_speed_mode()
542 card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; in sdio_set_bus_speed_mode()
543 card->sd_bus_speed = UHS_SDR25_BUS_SPEED; in sdio_set_bus_speed_mode()
544 } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | in sdio_set_bus_speed_mode()
546 MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & in sdio_set_bus_speed_mode()
550 card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; in sdio_set_bus_speed_mode()
551 card->sd_bus_speed = UHS_SDR12_BUS_SPEED; in sdio_set_bus_speed_mode()
564 max_rate = min_not_zero(card->quirk_max_rate, in sdio_set_bus_speed_mode()
565 card->sw_caps.uhs_max_dtr); in sdio_set_bus_speed_mode()
567 mmc_set_timing(card->host, timing); in sdio_set_bus_speed_mode()
568 mmc_set_clock(card->host, max_rate); in sdio_set_bus_speed_mode()
574 * UHS-I specific initialization procedure
580 if (!card->scr.sda_spec3) in mmc_sdio_init_uhs_card()
598 * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. in mmc_sdio_init_uhs_card()
600 if (!mmc_host_is_spi(card->host) && in mmc_sdio_init_uhs_card()
601 ((card->host->ios.timing == MMC_TIMING_UHS_SDR50) || in mmc_sdio_init_uhs_card()
602 (card->host->ios.timing == MMC_TIMING_UHS_SDR104))) in mmc_sdio_init_uhs_card()
624 * The CMD5 reset (mmc_send_io_op_cond()), according to the SDIO spec, in mmc_sdio_pre_init()
625 * is not necessary for non-removable cards. However, it is required in mmc_sdio_pre_init()
652 WARN_ON(!host->claimed); in mmc_sdio_init_card()
688 mmc_sd_get_cid(host, ocr & rocr, card->raw_cid, NULL) == 0) { in mmc_sdio_init_card()
689 card->type = MMC_TYPE_SD_COMBO; in mmc_sdio_init_card()
691 if (oldcard && (oldcard->type != MMC_TYPE_SD_COMBO || in mmc_sdio_init_card()
692 memcmp(card->raw_cid, oldcard->raw_cid, sizeof(card->raw_cid)) != 0)) { in mmc_sdio_init_card()
693 err = -ENOENT; in mmc_sdio_init_card()
697 card->type = MMC_TYPE_SDIO; in mmc_sdio_init_card()
699 if (oldcard && oldcard->type != MMC_TYPE_SDIO) { in mmc_sdio_init_card()
700 err = -ENOENT; in mmc_sdio_init_card()
708 if (host->ops->init_card) in mmc_sdio_init_card()
709 host->ops->init_card(host, card); in mmc_sdio_init_card()
712 * If the host and card support UHS-I mode request the card in mmc_sdio_init_card()
713 * to switch to 1.8V signaling level. No 1.8v signalling if in mmc_sdio_init_card()
716 * it. Per SDIO spec v3, section 3.1.2, if the voltage is already in mmc_sdio_init_card()
724 if (err == -EAGAIN) { in mmc_sdio_init_card()
726 retries--; in mmc_sdio_init_card()
737 err = mmc_send_relative_addr(host, &card->rca); in mmc_sdio_init_card()
742 * Update oldcard with the new RCA received from the SDIO in mmc_sdio_init_card()
743 * device -- we're doing this so that it's updated in the in mmc_sdio_init_card()
747 oldcard->rca = card->rca; in mmc_sdio_init_card()
753 if (!oldcard && card->type == MMC_TYPE_SD_COMBO) { in mmc_sdio_init_card()
770 if (card->quirks & MMC_QUIRK_NONSTD_SDIO) { in mmc_sdio_init_card()
772 * This is non-standard SDIO device, meaning it doesn't in mmc_sdio_init_card()
777 mmc_set_clock(host, card->cis.max_dtr); in mmc_sdio_init_card()
779 if (card->cccr.high_speed) { in mmc_sdio_init_card()
780 mmc_set_timing(card->host, MMC_TIMING_SD_HS); in mmc_sdio_init_card()
786 host->card = card; in mmc_sdio_init_card()
814 if (card->cis.vendor == oldcard->cis.vendor && in mmc_sdio_init_card()
815 card->cis.device == oldcard->cis.device) { in mmc_sdio_init_card()
819 err = -ENOENT; in mmc_sdio_init_card()
823 card->ocr = ocr_card; in mmc_sdio_init_card()
826 if (card->type == MMC_TYPE_SD_COMBO) { in mmc_sdio_init_card()
828 /* handle as SDIO-only card if memory init failed */ in mmc_sdio_init_card()
834 card->type = MMC_TYPE_SDIO; in mmc_sdio_init_card()
836 card->dev.type = &sd_type; in mmc_sdio_init_card()
840 * If needed, disconnect card detection pull-up resistor. in mmc_sdio_init_card()
846 /* Initialization sequence for UHS-I cards */ in mmc_sdio_init_card()
848 if ((ocr & R4_18V_PRESENT) && card->sw_caps.sd3_bus_mode) { in mmc_sdio_init_card()
854 * Switch to high-speed (if supported). in mmc_sdio_init_card()
858 mmc_set_timing(card->host, MMC_TIMING_SD_HS); in mmc_sdio_init_card()
875 if (host->caps2 & MMC_CAP2_AVOID_3_3V && in mmc_sdio_init_card()
876 host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { in mmc_sdio_init_card()
879 err = -EINVAL; in mmc_sdio_init_card()
883 host->card = card; in mmc_sdio_init_card()
898 ret = mmc_sdio_pre_init(host, host->card->ocr, NULL); in mmc_sdio_reinit_card()
902 return mmc_sdio_init_card(host, host->card->ocr, host->card); in mmc_sdio_reinit_card()
912 for (i = 0;i < host->card->sdio_funcs;i++) { in mmc_sdio_remove()
913 if (host->card->sdio_func[i]) { in mmc_sdio_remove()
914 sdio_remove_func(host->card->sdio_func[i]); in mmc_sdio_remove()
915 host->card->sdio_func[i] = NULL; in mmc_sdio_remove()
919 mmc_remove_card(host->card); in mmc_sdio_remove()
920 host->card = NULL; in mmc_sdio_remove()
924 * Card detection - card is alive.
928 return mmc_select_card(host->card); in mmc_sdio_alive()
939 if (host->caps & MMC_CAP_POWER_OFF_CARD) { in mmc_sdio_detect()
940 err = pm_runtime_get_sync(&host->card->dev); in mmc_sdio_detect()
942 pm_runtime_put_noidle(&host->card->dev); in mmc_sdio_detect()
963 * Since there is no specific reason to believe a new user in mmc_sdio_detect()
967 if (host->caps & MMC_CAP_POWER_OFF_CARD) in mmc_sdio_detect()
968 pm_runtime_put_sync(&host->card->dev); in mmc_sdio_detect()
982 * SDIO pre_suspend. We need to suspend all functions separately.
990 for (i = 0; i < host->card->sdio_funcs; i++) { in mmc_sdio_pre_suspend()
991 struct sdio_func *func = host->card->sdio_func[i]; in mmc_sdio_pre_suspend()
992 if (func && sdio_func_present(func) && func->dev.driver) { in mmc_sdio_pre_suspend()
993 const struct dev_pm_ops *pmops = func->dev.driver->pm; in mmc_sdio_pre_suspend()
994 if (!pmops || !pmops->suspend || !pmops->resume) { in mmc_sdio_pre_suspend()
996 err = -ENOSYS; in mmc_sdio_pre_suspend()
1006 * SDIO suspend. Suspend all functions separately.
1010 WARN_ON(host->sdio_irqs && !mmc_card_keep_power(host)); in mmc_sdio_suspend()
1012 /* Prevent processing of SDIO IRQs in suspended state. */ in mmc_sdio_suspend()
1013 mmc_card_set_suspended(host->card); in mmc_sdio_suspend()
1014 cancel_delayed_work_sync(&host->sdio_irq_work); in mmc_sdio_suspend()
1019 sdio_disable_4bit_bus(host->card); in mmc_sdio_suspend()
1023 } else if (host->retune_period) { in mmc_sdio_suspend()
1046 mmc_power_up(host, host->card->ocr); in mmc_sdio_resume()
1051 * for SDIO cards that are MMC_CAP_POWER_OFF_CARD in mmc_sdio_resume()
1053 if (host->caps & MMC_CAP_POWER_OFF_CARD) { in mmc_sdio_resume()
1054 pm_runtime_disable(&host->card->dev); in mmc_sdio_resume()
1055 pm_runtime_set_active(&host->card->dev); in mmc_sdio_resume()
1056 pm_runtime_enable(&host->card->dev); in mmc_sdio_resume()
1060 /* We may have switched to 1-bit mode during suspend */ in mmc_sdio_resume()
1061 err = sdio_enable_4bit_bus(host->card); in mmc_sdio_resume()
1067 /* Allow SDIO IRQs to be processed again. */ in mmc_sdio_resume()
1068 mmc_card_clr_suspended(host->card); in mmc_sdio_resume()
1070 if (host->sdio_irqs) { in mmc_sdio_resume()
1071 if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) in mmc_sdio_resume()
1072 wake_up_process(host->sdio_irq_thread); in mmc_sdio_resume()
1073 else if (host->caps & MMC_CAP_SDIO_IRQ) in mmc_sdio_resume()
1074 queue_delayed_work(system_wq, &host->sdio_irq_work, 0); in mmc_sdio_resume()
1080 host->pm_flags &= ~MMC_PM_KEEP_POWER; in mmc_sdio_resume()
1086 /* No references to the card, cut the power to it. */ in mmc_sdio_runtime_suspend()
1098 /* Restore power and re-initialize. */ in mmc_sdio_runtime_resume()
1100 mmc_power_up(host, host->card->ocr); in mmc_sdio_runtime_resume()
1108 * SDIO HW reset
1115 struct mmc_card *card = host->card; in mmc_sdio_hw_reset()
1120 * re-detected, thus all func drivers becomes informed about it. in mmc_sdio_hw_reset()
1122 if (atomic_read(&card->sdio_funcs_probed) > 1) { in mmc_sdio_hw_reset()
1125 host->rescan_entered = 0; in mmc_sdio_hw_reset()
1135 mmc_power_cycle(host, card->ocr); in mmc_sdio_hw_reset()
1141 mmc_set_clock(host, host->f_init); in mmc_sdio_sw_reset()
1166 * Starting point for SDIO card init.
1174 WARN_ON(!host->claimed); in mmc_attach_sdio()
1181 if (host->ocr_avail_sdio) in mmc_attach_sdio()
1182 host->ocr_avail = host->ocr_avail_sdio; in mmc_attach_sdio()
1191 err = -EINVAL; in mmc_attach_sdio()
1202 card = host->card; in mmc_attach_sdio()
1207 if (host->caps & MMC_CAP_POWER_OFF_CARD) { in mmc_attach_sdio()
1209 * Do not allow runtime suspend until after SDIO function in mmc_attach_sdio()
1212 pm_runtime_get_noresume(&card->dev); in mmc_attach_sdio()
1217 err = pm_runtime_set_active(&card->dev); in mmc_attach_sdio()
1224 pm_runtime_enable(&card->dev); in mmc_attach_sdio()
1232 card->sdio_funcs = 0; in mmc_attach_sdio()
1237 for (i = 0; i < funcs; i++, card->sdio_funcs++) { in mmc_attach_sdio()
1238 err = sdio_init_func(host->card, i + 1); in mmc_attach_sdio()
1245 if (host->caps & MMC_CAP_POWER_OFF_CARD) in mmc_attach_sdio()
1246 pm_runtime_enable(&card->sdio_func[i]->dev); in mmc_attach_sdio()
1253 err = mmc_add_card(host->card); in mmc_attach_sdio()
1258 * ...then the SDIO functions. in mmc_attach_sdio()
1261 err = sdio_add_func(host->card->sdio_func[i]); in mmc_attach_sdio()
1266 if (host->caps & MMC_CAP_POWER_OFF_CARD) in mmc_attach_sdio()
1267 pm_runtime_put(&card->dev); in mmc_attach_sdio()
1278 * runtime PM. Similarly we also don't pm_runtime_put() the SDIO card in mmc_attach_sdio()
1287 pr_err("%s: error %d whilst initialising SDIO card\n", in mmc_attach_sdio()