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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-11 06:34:22 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-11 06:34:22 -0400 |
| commit | f43b179bbd84d2106c6fb8c7f2db1bfacff19f62 (patch) | |
| tree | 581e60846d1298276fac0b768ba12e06d7600d1e /drivers/mmc | |
| parent | a2ce35273c2f1aa0dcddd8822681d64ee5f31852 (diff) | |
| parent | 583f958b8a23343c904ec0790c25c96f5f82d409 (diff) | |
| download | linux-f43b179bbd84d2106c6fb8c7f2db1bfacff19f62.tar.gz linux-f43b179bbd84d2106c6fb8c7f2db1bfacff19f62.tar.bz2 linux-f43b179bbd84d2106c6fb8c7f2db1bfacff19f62.zip | |
Merge tag 'mmc-v3.18-1' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Fix SDIO IRQ bug
- MMC regulator improvements
- Fix slot-gpio card detect bug
- Add support for Driver Stage Register
- Convert the common MMC OF parser to use GPIO descriptors
- Convert MMC_CAP2_NO_MULTI_READ into a callback, ->multi_io_quirk()
- Some additional minor fixes
MMC host:
- mmci: Support Qualcomm specific DML layer for DMA
- dw_mmc: Use common MMC regulators
- dw_mmc: Add support for Rock-chips RK3288
- tmio: Enable runtime PM support
- tmio: Add support for R-Car Gen2 SoCs
- tmio: Several fixes and improvements
- omap_hsmmc: Removed Balaji from MAINTAINERS
- jz4740: add DMA and pre/post support
- sdhci: Add support for Intel Braswell
- sdhci: Several fixes and improvements"
* tag 'mmc-v3.18-1' of git://git.linaro.org/people/ulf.hansson/mmc: (119 commits)
ARM: dts: fix MMC2 regulators for Exynos5420 Arndale Octa board
mmc: sdhci-acpi: Fix Braswell eMMC timeout clock frequency
mmc: sdhci-acpi: Pass HID and UID to probe_slot
mmc: sdhci-acpi: Get UID directly from acpi_device
mmc, sdhci, bcm-kona, LLVMLinux: Remove use of __initconst
mmc: sdhci-pci: Fix Braswell eMMC timeout clock frequency
mmc: sdhci: Let a driver override timeout clock frequency
mmc: sdhci-pci: Add Bay Trail and Braswell SD card detect
mmc: sdhci-pci: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel BYT host controllers
mmc: sdhci-acpi: Add a HID and UID for a SD Card host controller
mmc: sdhci-acpi: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel host controllers
mmc: sdhci: Add quirk for always getting TC with stop cmd
mmc: core: restore detect line inversion semantics
mmc: Fix incorrect warning when setting 0 Hz via debugfs
mmc: Fix use of wrong device in mmc_gpiod_free_cd()
mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot
mmc: rtsx_pci: Set power related cap2 macros
mmc: core: Add new power_mode MMC_POWER_UNDEFINED
mmc: sdhci: execute tuning when device is not busy
mmc: atmel-mci: Release mmc resources on failure in probe
..
Diffstat (limited to 'drivers/mmc')
66 files changed, 1934 insertions, 733 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index ede41f05c392..1fa4c80ff886 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -977,7 +977,7 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, return ERR_CONTINUE; /* Now for stop errors. These aren't fatal to the transfer. */ - pr_err("%s: error %d sending stop command, original cmd response %#x, card status %#x\n", + pr_info("%s: error %d sending stop command, original cmd response %#x, card status %#x\n", req->rq_disk->disk_name, brq->stop.error, brq->cmd.resp[0], status); @@ -1398,10 +1398,15 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, if (disable_multi) brq->data.blocks = 1; - /* Some controllers can't do multiblock reads due to hw bugs */ - if (card->host->caps2 & MMC_CAP2_NO_MULTI_READ && - rq_data_dir(req) == READ) - brq->data.blocks = 1; + /* + * Some controllers have HW issues while operating + * in multiple I/O mode + */ + if (card->host->ops->multi_io_quirk) + brq->data.blocks = card->host->ops->multi_io_quirk(card, + (rq_data_dir(req) == READ) ? + MMC_DATA_READ : MMC_DATA_WRITE, + brq->data.blocks); } if (brq->data.blocks > 1 || do_rel_wr) { @@ -1923,8 +1928,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) case MMC_BLK_ECC_ERR: if (brq->data.blocks > 1) { /* Redo read one sector at a time */ - pr_warning("%s: retrying using single block read\n", - req->rq_disk->disk_name); + pr_warn("%s: retrying using single block read\n", + req->rq_disk->disk_name); disable_multi = 1; break; } @@ -2131,7 +2136,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, md->disk->queue = md->queue.queue; md->disk->driverfs_dev = parent; set_disk_ro(md->disk, md->read_only || default_ro); - if (area_type & MMC_BLK_DATA_AREA_RPMB) + if (area_type & (MMC_BLK_DATA_AREA_RPMB | MMC_BLK_DATA_AREA_BOOT)) md->disk->flags |= GENHD_FL_NO_PART_SCAN; /* diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 3e049c13429c..feea926e32f8 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -229,14 +229,12 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, if (bouncesz > 512) { mqrq_cur->bounce_buf = kmalloc(bouncesz, GFP_KERNEL); if (!mqrq_cur->bounce_buf) { - pr_warning("%s: unable to " - "allocate bounce cur buffer\n", + pr_warn("%s: unable to allocate bounce cur buffer\n", mmc_card_name(card)); } mqrq_prev->bounce_buf = kmalloc(bouncesz, GFP_KERNEL); if (!mqrq_prev->bounce_buf) { - pr_warning("%s: unable to " - "allocate bounce prev buffer\n", + pr_warn("%s: unable to allocate bounce prev buffer\n", mmc_card_name(card)); kfree(mqrq_cur->bounce_buf); mqrq_cur->bounce_buf = NULL; diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index f093cea0d060..d2de5925b73e 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -1063,8 +1063,8 @@ static int sdio_uart_probe(struct sdio_func *func, return -ENOMEM; if (func->class == SDIO_CLASS_UART) { - pr_warning("%s: need info on UART class basic setup\n", - sdio_func_id(func)); + pr_warn("%s: need info on UART class basic setup\n", + sdio_func_id(func)); kfree(port); return -ENOSYS; } else if (func->class == SDIO_CLASS_GPS) { @@ -1082,9 +1082,8 @@ static int sdio_uart_probe(struct sdio_func *func, break; } if (!tpl) { - pr_warning( - "%s: can't find tuple 0x91 subtuple 0 (SUBTPL_SIOREG) for GPS class\n", - sdio_func_id(func)); + pr_warn("%s: can't find tuple 0x91 subtuple 0 (SUBTPL_SIOREG) for GPS class\n", + sdio_func_id(func)); kfree(port); return -EINVAL; } diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index d03a080fb9cd..f26a5f1d926d 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -433,8 +433,8 @@ static void mmc_wait_for_req_done(struct mmc_host *host, */ if (cmd->sanitize_busy && cmd->error == -ETIMEDOUT) { if (!mmc_interrupt_hpi(host->card)) { - pr_warning("%s: %s: Interrupted sanitize\n", - mmc_hostname(host), __func__); + pr_warn("%s: %s: Interrupted sanitize\n", + mmc_hostname(host), __func__); cmd->error = 0; break; } else { @@ -995,7 +995,7 @@ void mmc_set_chip_select(struct mmc_host *host, int mode) */ static void __mmc_set_clock(struct mmc_host *host, unsigned int hz) { - WARN_ON(hz < host->f_min); + WARN_ON(hz && hz < host->f_min); if (hz > host->f_max) hz = host->f_max; @@ -1221,15 +1221,14 @@ int mmc_regulator_get_ocrmask(struct regulator *supply) int result = 0; int count; int i; + int vdd_uV; + int vdd_mV; count = regulator_count_voltages(supply); if (count < 0) return count; for (i = 0; i < count; i++) { - int vdd_uV; - int vdd_mV; - vdd_uV = regulator_list_voltage(supply, i); if (vdd_uV <= 0) continue; @@ -1238,6 +1237,15 @@ int mmc_regulator_get_ocrmask(struct regulator *supply) result |= mmc_vddrange_to_ocrmask(vdd_mV, vdd_mV); } + if (!result) { + vdd_uV = regulator_get_voltage(supply); + if (vdd_uV <= 0) + return vdd_uV; + + vdd_mV = vdd_uV / 1000; + result = mmc_vddrange_to_ocrmask(vdd_mV, vdd_mV); + } + return result; } EXPORT_SYMBOL_GPL(mmc_regulator_get_ocrmask); @@ -1263,7 +1271,6 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc, if (vdd_bit) { int tmp; - int voltage; /* * REVISIT mmc_vddrange_to_ocrmask() may have set some @@ -1280,22 +1287,7 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc, max_uV = min_uV + 100 * 1000; } - /* - * If we're using a fixed/static regulator, don't call - * regulator_set_voltage; it would fail. - */ - voltage = regulator_get_voltage(supply); - - if (!regulator_can_change_voltage(supply)) - min_uV = max_uV = voltage; - - if (voltage < 0) - result = voltage; - else if (voltage < min_uV || voltage > max_uV) - result = regulator_set_voltage(supply, min_uV, max_uV); - else - result = 0; - + result = regulator_set_voltage(supply, min_uV, max_uV); if (result == 0 && !mmc->regulator_enabled) { result = regulator_enable(supply); if (!result) @@ -1425,8 +1417,8 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, u32 ocr) if (!host->ops->start_signal_voltage_switch) return -EPERM; if (!host->ops->card_busy) - pr_warning("%s: cannot verify signal voltage switch\n", - mmc_hostname(host)); + pr_warn("%s: cannot verify signal voltage switch\n", + mmc_hostname(host)); cmd.opcode = SD_SWITCH_VOLTAGE; cmd.arg = 0; @@ -1761,7 +1753,7 @@ void mmc_init_erase(struct mmc_card *card) card->erase_shift = ffs(card->ssr.au) - 1; } else if (card->ext_csd.hc_erase_size) { card->pref_erase = card->ext_csd.hc_erase_size; - } else { + } else if (card->erase_size) { sz = (card->csd.capacity << (card->csd.read_blkbits - 9)) >> 11; if (sz < 128) card->pref_erase = 512 * 1024 / 512; @@ -1778,7 +1770,8 @@ void mmc_init_erase(struct mmc_card *card) if (sz) card->pref_erase += card->erase_size - sz; } - } + } else + card->pref_erase = 0; } static unsigned int mmc_mmc_erase_timeout(struct mmc_card *card, @@ -2489,6 +2482,7 @@ void mmc_start_host(struct mmc_host *host) { host->f_init = max(freqs[0], host->f_min); host->rescan_disable = 0; + host->ios.power_mode = MMC_POWER_UNDEFINED; if (host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP) mmc_power_off(host); else diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 95cceae96944..03c53b72a2d6 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -310,9 +310,8 @@ int mmc_of_parse(struct mmc_host *host) { struct device_node *np; u32 bus_width; - bool explicit_inv_wp, gpio_inv_wp = false; - enum of_gpio_flags flags; - int len, ret, gpio; + int len, ret; + bool cap_invert, gpio_invert; if (!host->parent || !host->parent->of_node) return 0; @@ -360,59 +359,62 @@ int mmc_of_parse(struct mmc_host *host) if (of_find_property(np, "non-removable", &len)) { host->caps |= MMC_CAP_NONREMOVABLE; } else { - bool explicit_inv_cd, gpio_inv_cd = false; - - explicit_inv_cd = of_property_read_bool(np, "cd-inverted"); + if (of_property_read_bool(np, "cd-inverted")) + cap_invert = true; + else + cap_invert = false; if (of_find_property(np, "broken-cd", &len)) host->caps |= MMC_CAP_NEEDS_POLL; - gpio = of_get_named_gpio_flags(np, "cd-gpios", 0, &flags); - if (gpio == -EPROBE_DEFER) - return gpio; - if (gpio_is_valid(gpio)) { - if (!(flags & OF_GPIO_ACTIVE_LOW)) - gpio_inv_cd = true; - - ret = mmc_gpio_request_cd(host, gpio, 0); - if (ret < 0) { - dev_err(host->parent, - "Failed to request CD GPIO #%d: %d!\n", - gpio, ret); + ret = mmc_gpiod_request_cd(host, "cd", 0, true, + 0, &gpio_invert); + if (ret) { + if (ret == -EPROBE_DEFER) return ret; - } else { - dev_info(host->parent, "Got CD GPIO #%d.\n", - gpio); + if (ret != -ENOENT) { + dev_err(host->parent, + "Failed to request CD GPIO: %d\n", + ret); } - } - - if (explicit_inv_cd ^ gpio_inv_cd) + } else + dev_info(host->parent, "Got CD GPIO\n"); + + /* + * There are two ways to flag that the CD line is inverted: + * through the cd-inverted flag and by the GPIO line itself + * being inverted from the GPIO subsystem. This is a leftover + * from the times when the GPIO subsystem did not make it + * possible to flag a line as inverted. + * + * If the capability on the host AND the GPIO line are + * both inverted, the end result is that the CD line is + * not inverted. + */ + if (cap_invert ^ gpio_invert) host->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; } /* Parse Write Protection */ - explicit_inv_wp = of_property_read_bool(np, "wp-inverted"); - - gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); - if (gpio == -EPROBE_DEFER) { - ret = -EPROBE_DEFER; - goto out; - } - if (gpio_is_valid(gpio)) { - if (!(flags & OF_GPIO_ACTIVE_LOW)) - gpio_inv_wp = true; + if (of_property_read_bool(np, "wp-inverted")) + cap_invert = true; + else + cap_invert = false; - ret = mmc_gpio_request_ro(host, gpio); - if (ret < 0) { - dev_err(host->parent, - "Failed to request WP GPIO: %d!\n", ret); + ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &gpio_invert); + if (ret) { + if (ret == -EPROBE_DEFER) goto out; - } else { - dev_info(host->parent, "Got WP GPIO #%d.\n", - gpio); + if (ret != -ENOENT) { + dev_err(host->parent, + "Failed to request WP GPIO: %d\n", + ret); } - } - if (explicit_inv_wp ^ gpio_inv_wp) + } else + dev_info(host->parent, "Got WP GPIO\n"); + + /* See the comment on CD inversion above */ + if (cap_invert ^ gpio_invert) host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; if (of_find_property(np, "cap-sd-highspeed", &len)) @@ -452,6 +454,14 @@ int mmc_of_parse(struct mmc_host *host) if (of_find_property(np, "mmc-hs400-1_2v", &len)) host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR; + host->dsr_req = !of_property_read_u32(np, "dsr", &host->dsr); + if (host->dsr_req && (host->dsr & ~0xffff)) { + dev_err(host->parent, + "device tree specified broken value for DSR: 0x%x, ignoring\n", + host->dsr); + host->dsr_req = 0; + } + return 0; out: diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 1eda8dd8c867..a301a78a2bd1 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -162,6 +162,7 @@ static int mmc_decode_csd(struct mmc_card *card) csd->read_partial = UNSTUFF_BITS(resp, 79, 1); csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); + csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); csd->write_partial = UNSTUFF_BITS(resp, 21, 1); @@ -225,9 +226,7 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) "Card will be ignored.\n", mmc_hostname(card->host)); } else { - pr_warning("%s: unable to read " - "EXT_CSD, performance might " - "suffer.\n", + pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", mmc_hostname(card->host)); err = 0; } @@ -298,6 +297,97 @@ static void mmc_select_card_type(struct mmc_card *card) card->mmc_avail_type = avail_type; } +static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) +{ + u8 hc_erase_grp_sz, hc_wp_grp_sz; + + /* + * Disable these attributes by default + */ + card->ext_csd.enhanced_area_offset = -EINVAL; + card->ext_csd.enhanced_area_size = -EINVAL; + + /* + * Enhanced area feature support -- check whether the eMMC + * card has the Enhanced area enabled. If so, export enhanced + * area offset and size to user by adding sysfs interface. + */ + if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && + (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { + if (card->ext_csd.partition_setting_completed) { + hc_erase_grp_sz = + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; + hc_wp_grp_sz = + ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; + + /* + * calculate the enhanced data area offset, in bytes + */ + card->ext_csd.enhanced_area_offset = + (ext_csd[139] << 24) + (ext_csd[138] << 16) + + (ext_csd[137] << 8) + ext_csd[136]; + if (mmc_card_blockaddr(card)) + card->ext_csd.enhanced_area_offset <<= 9; + /* + * calculate the enhanced data area size, in kilobytes + */ + card->ext_csd.enhanced_area_size = + (ext_csd[142] << 16) + (ext_csd[141] << 8) + + ext_csd[140]; + card->ext_csd.enhanced_area_size *= + (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); + card->ext_csd.enhanced_area_size <<= 9; + } else { + pr_warn("%s: defines enhanced area without partition setting complete\n", + mmc_hostname(card->host)); + } + } +} + +static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) +{ + int idx; + u8 hc_erase_grp_sz, hc_wp_grp_sz; + unsigned int part_size; + + /* + * General purpose partition feature support -- + * If ext_csd has the size of general purpose partitions, + * set size, part_cfg, partition name in mmc_part. + */ + if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & + EXT_CSD_PART_SUPPORT_PART_EN) { + hc_erase_grp_sz = + ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; + hc_wp_grp_sz = + ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; + + for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { + if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && + !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && + !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) + continue; + if (card->ext_csd.partition_setting_completed == 0) { + pr_warn("%s: has partition size defined without partition complete\n", + mmc_hostname(card->host)); + break; + } + part_size = + (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] + << 16) + + (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] + << 8) + + ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; + part_size *= (size_t)(hc_erase_grp_sz * + hc_wp_grp_sz); + mmc_part_add(card, part_size << 19, + EXT_CSD_PART_CONFIG_ACC_GP0 + idx, + "gp%d", idx, false, + MMC_BLK_DATA_AREA_GP); + } + } +} + /* * Decode extended CSD. */ @@ -305,7 +395,6 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) { int err = 0, idx; unsigned int part_size; - u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; BUG_ON(!card); @@ -402,80 +491,16 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) ext_csd[EXT_CSD_TRIM_MULT]; card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; if (card->ext_csd.rev >= 4) { - /* - * Enhanced area feature support -- check whether the eMMC - * card has the Enhanced area enabled. If so, export enhanced - * area offset and size to user by adding sysfs interface. - */ - if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && - (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { - hc_erase_grp_sz = - ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; - hc_wp_grp_sz = - ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; + if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & + EXT_CSD_PART_SETTING_COMPLETED) + card->ext_csd.partition_setting_completed = 1; + else + card->ext_csd.partition_setting_completed = 0; - card->ext_csd.enhanced_area_en = 1; - /* - * calculate the enhanced data area offset, in bytes - */ - card->ext_csd.enhanced_area_offset = - (ext_csd[139] << 24) + (ext_csd[138] << 16) + - (ext_csd[137] << 8) + ext_csd[136]; - if (mmc_card_blockaddr(card)) - card->ext_csd.enhanced_area_offset <<= 9; - /* - * calculate the enhanced data area size, in kilobytes - */ - card->ext_csd.enhanced_area_size = - (ext_csd[142] << 16) + (ext_csd[141] << 8) + - ext_csd[140]; - card->ext_csd.enhanced_area_size *= - (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); - card->ext_csd.enhanced_area_size <<= 9; - } else { - /* - * If the enhanced area is not enabled, disable these - * device attributes. - */ - card->ext_csd.enhanced_area_offset = -EINVAL; - card->ext_csd.enhanced_area_size = -EINVAL; - } + mmc_manage_enhanced_area(card, ext_csd); - /* - * General purpose partition feature support -- - * If ext_csd has the size of general purpose partitions, - * set size, part_cfg, partition name in mmc_part. - */ - if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & - EXT_CSD_PART_SUPPORT_PART_EN) { - if (card->ext_csd.enhanced_area_en != 1) { - hc_erase_grp_sz = - ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; - hc_wp_grp_sz = - ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; - - card->ext_csd.enhanced_area_en = 1; - } + mmc_manage_gp_partitions(card, ext_csd); - for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { - if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && - !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && - !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) - continue; - part_size = - (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] - << 16) + - (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] - << 8) + - ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; - part_size *= (size_t)(hc_erase_grp_sz * - hc_wp_grp_sz); - mmc_part_add(card, part_size << 19, - EXT_CSD_PART_CONFIG_ACC_GP0 + idx, - "gp%d", idx, false, - MMC_BLK_DATA_AREA_GP); - } - } card->ext_csd.sec_trim_mult = ext_csd[EXT_CSD_SEC_TRIM_MULT]; card->ext_csd.sec_erase_mult = @@ -789,8 +814,8 @@ static int __mmc_select_powerclass(struct mmc_card *card, ext_csd->raw_pwr_cl_200_360; break; default: - pr_warning("%s: Voltage range not supported " - "for power class.\n", mmc_hostname(host)); + pr_warn("%s: Voltage range not supported for power class\n", + mmc_hostname(host)); return -EINVAL; } @@ -987,19 +1012,35 @@ static int mmc_select_hs_ddr(struct mmc_card *card) * 1.8V vccq at 3.3V core voltage (vcc) is not required * in the JEDEC spec for DDR. * - * Do not force change in vccq since we are obviously - * working and no change to vccq is needed. + * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all + * host controller can support this, like some of the SDHCI + * controller which connect to an eMMC device. Some of these + * host controller still needs to use 1.8v vccq for supporting + * DDR mode. + * + * So the sequence will be: + * if (host and device can both support 1.2v IO) + * use 1.2v IO; + * else if (host and device can both support 1.8v IO) + * use 1.8v IO; + * so if host and device can only support 3.3v IO, this is the + * last choice. * * WARNING: eMMC rules are NOT the same as SD DDR */ - if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { - err = __mmc_set_signal_voltage(host, - MMC_SIGNAL_VOLTAGE_120); - if (err) - return err; - } + err = -EINVAL; + if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); + + if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); - mmc_set_timing(host, MMC_TIMING_MMC_DDR52); + /* make sure vccq is 3.3v after switching disaster */ + if (err) + err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); + + if (!err) + mmc_set_timing(host, MMC_TIMING_MMC_DDR52); return err; } @@ -1134,6 +1175,38 @@ bus_speed: return err; } +const u8 tuning_blk_pattern_4bit[MMC_TUNING_BLK_PATTERN_4BIT_SIZE] = { + 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, + 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, + 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, + 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, + 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, + 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, + 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, + 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, +}; +EXPORT_SYMBOL(tuning_blk_pattern_4bit); + +const u8 tuning_blk_pattern_8bit[MMC_TUNING_BLK_PATTERN_8BIT_SIZE] = { + 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, + 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc, + 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff, + 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff, + 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd, + 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb, + 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff, + 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff, + 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, + 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, + 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, + 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, + 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, + 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, + 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, + 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, +}; +EXPORT_SYMBOL(tuning_blk_pattern_8bit); + /* * Execute tuning sequence to seek the proper bus operating * conditions for HS200 and HS400, which sends CMD21 to the device. @@ -1272,6 +1345,13 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } /* + * handling only for cards supporting DSR and hosts requesting + * DSR configuration + */ + if (card->csd.dsr_imp && host->dsr_req) + mmc_set_dsr(host); + + /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { @@ -1308,7 +1388,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF * bit. This bit will be lost every time after a reset or power off. */ - if (card->ext_csd.enhanced_area_en || + if (card->ext_csd.partition_setting_completed || (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_ERASE_GROUP_DEF, 1, @@ -1408,8 +1488,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, if (err && err != -EBADMSG) goto free_card; if (err) { - pr_warning("%s: Enabling HPI failed\n", - mmc_hostname(card->host)); + pr_warn("%s: Enabling HPI failed\n", + mmc_hostname(card->host)); err = 0; } else card->ext_csd.hpi_en = 1; @@ -1430,9 +1510,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * Only if no error, cache is turned on successfully. */ if (err) { - pr_warning("%s: Cache is supported, " - "but failed to turn on (%d)\n", - mmc_hostname(card->host), err); + pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", + mmc_hostname(card->host), err); card->ext_csd.cache_ctrl = 0; err = 0; } else { diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index f51b5ba3bbea..7911e0510a1d 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -93,6 +93,26 @@ int mmc_deselect_cards(struct mmc_host *host) return _mmc_select_card(host, NULL); } +/* + * Write the value specified in the device tree or board code into the optional + * 16 bit Driver Stage Register. This can be used to tune raise/fall times and + * drive strength of the DAT and CMD outputs. The actual meaning of a given + * value is hardware dependant. + * The presence of the DSR register can be determined from the CSD register, + * bit 76. + */ +int mmc_set_dsr(struct mmc_host *host) +{ + struct mmc_command cmd = {0}; + + cmd.opcode = MMC_SET_DSR; + + cmd.arg = (host->dsr << 16) | 0xffff; + cmd.flags = MMC_RSP_NONE | MMC_CMD_AC; + + return mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); +} + int mmc_go_idle(struct mmc_host *host) { int err; @@ -629,8 +649,8 @@ int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status) int err; if (!card->ext_csd.hpi) { - pr_warning("%s: Card didn't support HPI command\n", - mmc_hostname(card->host)); + pr_warn("%s: Card didn't support HPI command\n", + mmc_hostname(card->host)); return -EINVAL; } diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h index 80ae9f4e0293..390dac665b2a 100644 --- a/drivers/mmc/core/mmc_ops.h +++ b/drivers/mmc/core/mmc_ops.h @@ -14,6 +14,7 @@ int mmc_select_card(struct mmc_card *card); int mmc_deselect_cards(struct mmc_host *host); +int mmc_set_dsr(struct mmc_host *host); int mmc_go_idle(struct mmc_host *host); int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr); int mmc_all_send_cid(struct mmc_host *host, u32 *cid); diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 0c44510bf717..d90a6de7901d 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -127,6 +127,7 @@ static int mmc_decode_csd(struct mmc_card *card) csd->read_partial = UNSTUFF_BITS(resp, 79, 1); csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); + csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); csd->write_partial = UNSTUFF_BITS(resp, 21, 1); @@ -228,8 +229,8 @@ static int mmc_read_ssr(struct mmc_card *card) u32 *ssr; if (!(card->csd.cmdclass & CCC_APP_SPEC)) { - pr_warning("%s: card lacks mandatory SD Status " - "function.\n", mmc_hostname(card->host)); + pr_warn("%s: card lacks mandatory SD Status function\n", + mmc_hostname(card->host)); return 0; } @@ -239,8 +240,8 @@ static int mmc_read_ssr(struct mmc_card *card) err = mmc_app_sd_status(card, ssr); if (err) { - pr_warning("%s: problem reading SD Status " - "register.\n", mmc_hostname(card->host)); + pr_warn("%s: problem reading SD Status register\n", + mmc_hostname(card->host)); err = 0; goto out; } @@ -264,8 +265,8 @@ static int mmc_read_ssr(struct mmc_card *card) card->ssr.erase_offset = eo * 1000; } } else { - pr_warning("%s: SD Status: Invalid Allocation Unit size.\n", - mmc_hostname(card->host)); + pr_warn("%s: SD Status: Invalid Allocation Unit size\n", + mmc_hostname(card->host)); } } out: @@ -285,8 +286,7 @@ static int mmc_read_switch(struct mmc_card *card) return 0; if (!(card->csd.cmdclass & CCC_SWITCH)) { - pr_warning("%s: card lacks mandatory switch " - "function, performance might suffer.\n", + pr_warn("%s: card lacks mandatory switch function, performance might suffer\n", mmc_hostname(card->host)); return 0; } @@ -315,7 +315,7 @@ static int mmc_read_switch(struct mmc_card *card) if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) goto out; - pr_warning("%s: problem reading Bus Speed modes.\n", + pr_warn("%s: problem reading Bus Speed modes\n", mmc_hostname(card->host)); err = 0; @@ -371,8 +371,7 @@ int mmc_sd_switch_hs(struct mmc_card *card) goto out; if ((status[16] & 0xF) != 1) { - pr_warning("%s: Problem switching card " - "into high-speed mode!\n", + pr_warn("%s: Problem switching card into high-speed mode!\n", mmc_hostname(card->host)); err = 0; } else { @@ -439,7 +438,7 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status) return err; if ((status[15] & 0xF) != drive_strength) { - pr_warning("%s: Problem setting drive strength!\n", + pr_warn("%s: Problem setting drive strength!\n", mmc_hostname(card->host)); return 0; } @@ -517,7 +516,7 @@ static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) return err; if ((status[16] & 0xF) != card->sd_bus_speed) - pr_warning("%s: Problem setting bus speed mode!\n", + pr_warn("%s: Problem setting bus speed mode!\n", mmc_hostname(card->host)); else { mmc_set_timing(card->host, timing); @@ -597,7 +596,7 @@ static int sd_set_current_limit(struct mmc_card *card, u8 *status) return err; if (((status[15] >> 4) & 0x0F) != current_limit) - pr_warning("%s: Problem setting current limit!\n", + pr_warn("%s: Problem setting current limit!\n", mmc_hostname(card->host)); } @@ -726,8 +725,7 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) try_again: if (!retries) { ocr &= ~SD_OCR_S18R; - pr_warning("%s: Skipping voltage switch\n", - mmc_hostname(host)); + pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); } /* @@ -871,9 +869,7 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, } if (ro < 0) { - pr_warning("%s: host does not " - "support reading read-only " - "switch. assuming write-enable.\n", + pr_warn("%s: host does not support reading read-only switch, assuming write-enable\n", mmc_hostname(host)); } else if (ro > 0) { mmc_card_set_readonly(card); @@ -954,6 +950,13 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, } /* + * handling only for cards supporting DSR and hosts requesting + * DSR configuration + */ + if (card->csd.dsr_imp && host->dsr_req) + mmc_set_dsr(host); + + /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index e636d9e99e4a..2439e717655b 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -216,8 +216,8 @@ static int sdio_enable_wide(struct mmc_card *card) return ret; if ((ctrl & SDIO_BUS_WIDTH_MASK) == SDIO_BUS_WIDTH_RESERVED) - pr_warning("%s: SDIO_CCCR_IF is invalid: 0x%02x\n", - mmc_hostname(card->host), ctrl); + pr_warn("%s: SDIO_CCCR_IF is invalid: 0x%02x\n", + mmc_hostname(card->host), ctrl); /* set as 4-bit bus width */ ctrl &= ~SDIO_BUS_WIDTH_MASK; @@ -605,8 +605,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, try_again: if (!retries) { - pr_warning("%s: Skipping voltage switch\n", - mmc_hostname(host)); + pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); ocr &= ~R4_18V_PRESENT; } @@ -992,8 +991,16 @@ static int mmc_sdio_resume(struct mmc_host *host) } } - if (!err && host->sdio_irqs) - wake_up_process(host->sdio_irq_thread); + if (!err && host->sdio_irqs) { + if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) { + wake_up_process(host->sdio_irq_thread); + } else if (host->caps & MMC_CAP_SDIO_IRQ) { + mmc_host_clk_hold(host); + host->ops->enable_sdio_irq(host, 1); + mmc_host_clk_release(host); + } + } + mmc_release_host(host); host->pm_flags &= ~MMC_PM_KEEP_POWER; diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 65cf7a7e05ea..6da97b170563 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -178,8 +178,8 @@ static int sdio_bus_remove(struct device *dev) drv->remove(func); if (func->irq_handler) { - pr_warning("WARNING: driver %s did not remove " - "its interrupt handler!\n", drv->name); + pr_warn("WARNING: driver %s did not remove its interrupt handler!\n", + drv->name); sdio_claim_host(func); sdio_release_irq(func); sdio_release_host(func); diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c index 5cc13c8d35bb..09cc67d028f0 100644 --- a/drivers/mmc/core/sdio_irq.c +++ b/drivers/mmc/core/sdio_irq.c @@ -69,16 +69,15 @@ static int process_sdio_pending_irqs(struct mmc_host *host) if (pending & (1 << i)) { func = card->sdio_func[i - 1]; if (!func) { - pr_warning("%s: pending IRQ for " - "non-existent function\n", + pr_warn("%s: pending IRQ for non-existent function\n", mmc_card_id(card)); ret = -EINVAL; } else if (func->irq_handler) { func->irq_handler(func); count++; } else { - pr_warning("%s: pending IRQ with no handler\n", - sdio_func_id(func)); + pr_warn("%s: pending IRQ with no handler\n", + sdio_func_id(func)); ret = -EINVAL; } } @@ -208,7 +207,7 @@ static int sdio_card_irq_get(struct mmc_card *card) host->sdio_irqs--; return err; } - } else { + } else if (host->caps & MMC_CAP_SDIO_IRQ) { mmc_host_clk_hold(host); host->ops->enable_sdio_irq(host, 1); mmc_host_clk_release(host); @@ -229,7 +228,7 @@ static int sdio_card_irq_put(struct mmc_card *card) if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) { atomic_set(&host->sdio_irq_thread_abort, 1); kthread_stop(host->sdio_irq_thread); - } else { + } else if (host->caps & MMC_CAP_SDIO_IRQ) { mmc_host_clk_hold(host); host->ops->enable_sdio_irq(host, 0); mmc_host_clk_release(host); diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index 5f89cb83d5f0..69bbf2adb329 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -221,8 +221,6 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio, ctx->override_cd_active_level = true; ctx->cd_gpio = gpio_to_desc(gpio); - mmc_gpiod_request_cd_irq(host); - return 0; } EXPORT_SYMBOL(mmc_gpio_request_cd); @@ -283,6 +281,8 @@ EXPORT_SYMBOL(mmc_gpio_free_cd); * @idx: index of the GPIO to obtain in the consumer * @override_active_level: ignore %GPIO_ACTIVE_LOW flag * @debounce: debounce time in microseconds + * @gpio_invert: will return whether the GPIO line is inverted or not, set + * to NULL to ignore * * Use this function in place of mmc_gpio_request_cd() to use the GPIO * descriptor API. Note that it is paired with mmc_gpiod_free_cd() not @@ -293,7 +293,7 @@ EXPORT_SYMBOL(mmc_gpio_free_cd); */ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id, unsigned int idx, bool override_active_level, - unsigned int debounce) + unsigned int debounce, bool *gpio_invert) { struct mmc_gpio *ctx; struct gpio_desc *desc; @@ -308,20 +308,19 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id, if (!con_id) con_id = ctx->cd_label; - desc = devm_gpiod_get_index(host->parent, con_id, idx); + desc = devm_gpiod_get_index(host->parent, con_id, idx, GPIOD_IN); if (IS_ERR(desc)) return PTR_ERR(desc); - ret = gpiod_direction_input(desc); - if (ret < 0) - return ret; - if (debounce) { ret = gpiod_set_debounce(desc, debounce); if (ret < 0) return ret; } + if (gpio_invert) + *gpio_invert = !gpiod_is_active_low(desc); + ctx->override_cd_active_level = override_active_level; ctx->cd_gpio = desc; @@ -330,6 +329,59 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id, EXPORT_SYMBOL(mmc_gpiod_request_cd); /** + * mmc_gpiod_request_ro - request a gpio descriptor for write protection + * @host: mmc host + * @con_id: function within the GPIO consumer + * @idx: index of the GPIO to obtain in the consumer + * @override_active_level: ignore %GPIO_ACTIVE_LOW flag + * @debounce: debounce time in microseconds + * @gpio_invert: will return whether the GPIO line is inverted or not, + * set to NULL to ignore + * + * Use this function in place of mmc_gpio_request_ro() to use the GPIO + * descriptor API. Note that it is paired with mmc_gpiod_free_ro() not + * mmc_gpio_free_ro(). + * + * Returns zero on success, else an error. + */ +int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id, + unsigned int idx, bool override_active_level, + unsigned int debounce, bool *gpio_invert) +{ + struct mmc_gpio *ctx; + struct gpio_desc *desc; + int ret; + + ret = mmc_gpio_alloc(host); + if (ret < 0) + return ret; + + ctx = host->slot.handler_priv; + + if (!con_id) + con_id = ctx->ro_label; + + desc = devm_gpiod_get_index(host->parent, con_id, idx, GPIOD_IN); + if (IS_ERR(desc)) + return PTR_ERR(desc); + + if (debounce) { + ret = gpiod_set_debounce(desc, debounce); + if (ret < 0) + return ret; + } + + if (gpio_invert) + *gpio_invert = !gpiod_is_active_low(desc); + + ctx->override_ro_active_level = override_active_level; + ctx->ro_gpio = desc; + + return 0; +} +EXPORT_SYMBOL(mmc_gpiod_request_ro); + +/** * mmc_gpiod_free_cd - free the card-detection gpio descriptor * @host: mmc host * @@ -348,7 +400,7 @@ void mmc_gpiod_free_cd(struct mmc_host *host) host->slot.cd_irq = -EINVAL; } - devm_gpiod_put(&host->class_dev, ctx->cd_gpio); + devm_gpiod_put(host->parent, ctx->cd_gpio); ctx->cd_gpio = NULL; } diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 451135822464..13860656104b 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -14,6 +14,17 @@ config MMC_ARMMMCI If unsure, say N. +config MMC_QCOM_DML + tristate "Qualcomm Data Mover for SD Card Controller" + depends on MMC_ARMMMCI && QCOM_BAM_DMA + default y + help + This selects the Qualcomm Data Mover lite/local on SD Card controller. + This option will enable the dma to work correctly, if you are using + Qcom SOCs and MMC, you would probably need this option to get DMA working. + + if unsure, say N. + config MMC_PXA tristate "Intel PXA25x/26x/27x Multimedia Card Interface support" depends on ARCH_PXA @@ -568,7 +579,8 @@ config SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND config MMC_DW tristate "Synopsys DesignWare Memory Card Interface" - depends on ARC || ARM + depends on HAS_DMA + depends on ARC || ARM || MIPS || COMPILE_TEST help This selects support for the Synopsys DesignWare Mobile Storage IP block, this provides host support for SD and MMC interfaces, in both @@ -626,6 +638,15 @@ config MMC_DW_PCI If unsure, say N. +config MMC_DW_ROCKCHIP + tristate "Rockchip specific extensions for Synopsys DW Memory Card Interface" + depends on MMC_DW && ARCH_ROCKCHIP + select MMC_DW_PLTFM + help + This selects support for Rockchip SoC specific extensions to the + Synopsys DesignWare Memory Card Interface driver. Select this option + for platforms based on RK3066, RK3188 and RK3288 SoC's. + config MMC_SH_MMCIF tristate "SuperH Internal MMCIF support" depends on MMC_BLOCK && HAS_DMA diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index f211eede8db5..b09ecfb88269 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -3,6 +3,7 @@ # obj-$(CONFIG_MMC_ARMMMCI) += mmci.o +obj-$(CONFIG_MMC_QCOM_DML) += mmci_qcom_dml.o obj-$(CONFIG_MMC_PXA) += pxamci.o obj-$(CONFIG_MMC_MXC) += mxcmmc.o obj-$(CONFIG_MMC_MXS) += mxs-mmc.o @@ -45,6 +46,7 @@ obj-$(CONFIG_MMC_DW_PLTFM) += dw_mmc-pltfm.o obj-$(CONFIG_MMC_DW_EXYNOS) += dw_mmc-exynos.o obj-$(CONFIG_MMC_DW_K3) += dw_mmc-k3.o obj-$(CONFIG_MMC_DW_PCI) += dw_mmc-pci.o +obj-$(CONFIG_MMC_DW_ROCKCHIP) += dw_mmc-rockchip.o obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o obj-$(CONFIG_MMC_VUB300) += vub300.o diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index bb585d940901..77250d4b1979 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -17,6 +17,7 @@ #include <linux/gpio.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/io.h> #include <linux/ioport.h> #include <linux/module.h> #include <linux/of.h> @@ -2195,7 +2196,8 @@ static int __init atmci_init_slot(struct atmel_mci *host, /* Assume card is present initially */ set_bit(ATMCI_CARD_PRESENT, &slot->flags); if (gpio_is_valid(slot->detect_pin)) { - if (gpio_request(slot->detect_pin, "mmc_detect")) { + if (devm_gpio_request(&host->pdev->dev, slot->detect_pin, + "mmc_detect")) { dev_dbg(&mmc->class_dev, "no detect pin available\n"); slot->detect_pin = -EBUSY; } else if (gpio_get_value(slot->detect_pin) ^ @@ -2208,7 +2210,8 @@ static int __init atmci_init_slot(struct atmel_mci *host, mmc->caps |= MMC_CAP_NEEDS_POLL; if (gpio_is_valid(slot->wp_pin)) { - if (gpio_request(slot->wp_pin, "mmc_wp")) { + if (devm_gpio_request(&host->pdev->dev, slot->wp_pin, + "mmc_wp")) { dev_dbg(&mmc->class_dev, "no WP pin available\n"); slot->wp_pin = -EBUSY; } @@ -2232,7 +2235,6 @@ static int __init atmci_init_slot(struct atmel_mci *host, dev_dbg(&mmc->class_dev, "could not request IRQ %d for detect pin\n", gpio_to_irq(slot->detect_pin)); - gpio_free(slot->detect_pin); slot->detect_pin = -EBUSY; } } @@ -2242,7 +2244,7 @@ static int __init atmci_init_slot(struct atmel_mci *host, return 0; } -static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot, +static void atmci_cleanup_slot(struct atmel_mci_slot *slot, unsigned int id) { /* Debugfs stuff is cleaned up by mmc core */ @@ -2257,10 +2259,7 @@ static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot, free_irq(gpio_to_irq(pin), slot); del_timer_sync(&slot->detect_timer); - gpio_free(pin); } - if (gpio_is_valid(slot->wp_pin)) - gpio_free(slot->wp_pin); slot->host->slot[id] = NULL; mmc_free_host(slot->mmc); @@ -2344,6 +2343,7 @@ static void __init atmci_get_cap(struct atmel_mci *host) /* keep only major version number */ switch (version & 0xf00) { + case 0x600: case 0x500: host->caps.has_odd_clk_div = 1; case 0x400: @@ -2377,7 +2377,7 @@ static int __init atmci_probe(struct platform_device *pdev) struct resource *regs; unsigned int nr_slots; int irq; - int ret; + int ret, i; regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) @@ -2395,7 +2395,7 @@ static int __init atmci_probe(struct platform_device *pdev) if (irq < 0) return irq; - host = kzalloc(sizeof(struct atmel_mci), GFP_KERNEL); + host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); if (!host) return -ENOMEM; @@ -2403,20 +2403,18 @@ static int __init atmci_probe(struct platform_device *pdev) spin_lock_init(&host->lock); INIT_LIST_HEAD(&host->queue); - host->mck = clk_get(&pdev->dev, "mci_clk"); - if (IS_ERR(host->mck)) { - ret = PTR_ERR(host->mck); - goto err_clk_get; - } + host->mck = devm_clk_get(&pdev->dev, "mci_clk"); + if (IS_ERR(host->mck)) + return PTR_ERR(host->mck); - ret = -ENOMEM; - host->regs = ioremap(regs->start, resource_size(regs)); + host->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); if (!host->regs) - goto err_ioremap; + return -ENOMEM; ret = clk_prepare_enable(host->mck); if (ret) - goto err_request_irq; + return ret; + atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST); host->bus_hz = clk_get_rate(host->mck); clk_disable_unprepare(host->mck); @@ -2427,7 +2425,7 @@ static int __init atmci_probe(struct platform_device *pdev) ret = request_irq(irq, atmci_interrupt, 0, dev_name(&pdev->dev), host); if (ret) - goto err_request_irq; + return ret; /* Get MCI capabilities and set operations according to it */ atmci_get_cap(host); @@ -2485,7 +2483,7 @@ static int __init atmci_probe(struct platform_device *pdev) if (!host->buffer) { ret = -ENOMEM; dev_err(&pdev->dev, "buffer allocation failed\n"); - goto err_init_slot; + goto err_dma_alloc; } } @@ -2495,16 +2493,16 @@ static int __init atmci_probe(struct platform_device *pdev) return 0; +err_dma_alloc: + for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) { + if (host->slot[i]) + atmci_cleanup_slot(host->slot[i], i); + } err_init_slot: + del_timer_sync(&host->timer); if (host->dma.chan) dma_release_channel(host->dma.chan); free_irq(irq, host); -err_request_irq: - iounmap(host->regs); -err_ioremap: - clk_put(host->mck); -err_clk_get: - kfree(host); return ret; } @@ -2528,14 +2526,11 @@ static int __exit atmci_remove(struct platform_device *pdev) atmci_readl(host, ATMCI_SR); clk_disable_unprepare(host->mck); + del_timer_sync(&host->timer); if (host->dma.chan) dma_release_channel(host->dma.chan); free_irq(platform_get_irq(pdev, 0), host); - iounmap(host->regs); - - clk_put(host->mck); - kfree(host); return 0; } diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index 9c9f6af29251..725f6a6fd89b 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -1028,9 +1028,12 @@ static int au1xmmc_probe(struct platform_device *pdev) host->clk = clk_get(&pdev->dev, ALCHEMY_PERIPH_CLK); if (IS_ERR(host->clk)) { dev_err(&pdev->dev, "cannot find clock\n"); + ret = PTR_ERR(host->clk); goto out_irq; } - if (clk_prepare_enable(host->clk)) { + + ret = clk_prepare_enable(host->clk); + if (ret) { dev_err(&pdev->dev, "cannot enable clock\n"); goto out_clk; } diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c index 6ada1b36685b..4c69fbd29811 100644 --- a/drivers/mmc/host/dw_mmc-pci.c +++ b/drivers/mmc/host/dw_mmc-pci.c @@ -95,9 +95,6 @@ static int dw_mci_pci_resume(struct device *dev) return dw_mci_resume(host); } -#else -#define dw_mci_pci_suspend NULL -#define dw_mci_pci_resume NULL #endif /* CONFIG_PM_SLEEP */ static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume); diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c index d4a47a9f5584..8b6572162ed9 100644 --- a/drivers/mmc/host/dw_mmc-pltfm.c +++ b/drivers/mmc/host/dw_mmc-pltfm.c @@ -21,6 +21,7 @@ #include <linux/mmc/mmc.h> #include <linux/mmc/dw_mmc.h> #include <linux/of.h> +#include <linux/clk.h> #include "dw_mmc.h" #include "dw_mmc-pltfm.h" @@ -30,10 +31,6 @@ static void dw_mci_pltfm_prepare_command(struct dw_mci *host, u32 *cmdr) *cmdr |= SDMMC_CMD_USE_HOLD_REG; } -static const struct dw_mci_drv_data rockchip_drv_data = { - .prepare_command = dw_mci_pltfm_prepare_command, -}; - static const struct dw_mci_drv_data socfpga_drv_data = { .prepare_command = dw_mci_pltfm_prepare_command, }; @@ -84,9 +81,6 @@ static int dw_mci_pltfm_resume(struct device *dev) return dw_mci_resume(host); } -#else -#define dw_mci_pltfm_suspend NULL -#define dw_mci_pltfm_resume NULL #endif /* CONFIG_PM_SLEEP */ SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume); @@ -94,8 +88,6 @@ EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); static const struct of_device_id dw_mci_pltfm_match[] = { { .compatible = "snps,dw-mshc", }, - { .compatible = "rockchip,rk2928-dw-mshc", - .data = &rockchip_drv_data }, { .compatible = "altr,socfpga-dw-mshc", .data = &socfpga_drv_data }, {}, diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c new file mode 100644 index 000000000000..f0c2cb1a210d --- /dev/null +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -0,0 +1,136 @@ +/* + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/mmc/host.h> +#include <linux/mmc/dw_mmc.h> +#include <linux/of_address.h> + +#include "dw_mmc.h" +#include "dw_mmc-pltfm.h" + +#define RK3288_CLKGEN_DIV 2 + +static void dw_mci_rockchip_prepare_command(struct dw_mci *host, u32 *cmdr) +{ + *cmdr |= SDMMC_CMD_USE_HOLD_REG; +} + +static int dw_mci_rk3288_setup_clock(struct dw_mci *host) +{ + host->bus_hz /= RK3288_CLKGEN_DIV; + + return 0; +} + +static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios) +{ + int ret; + unsigned int cclkin; + u32 bus_hz; + + /* + * cclkin: source clock of mmc controller + * bus_hz: card interface clock generated by CLKGEN + * bus_hz = cclkin / RK3288_CLKGEN_DIV + * ios->clock = (div == 0) ? bus_hz : (bus_hz / (2 * div)) + * + * Note: div can only be 0 or 1 + * if DDR50 8bit mode(only emmc work in 8bit mode), + * div must be set 1 + */ + if (ios->bus_width == MMC_BUS_WIDTH_8 && + ios->timing == MMC_TIMING_MMC_DDR52) + cclkin = 2 * ios->clock * RK3288_CLKGEN_DIV; + else + cclkin = ios->clock * RK3288_CLKGEN_DIV; + + ret = clk_set_rate(host->ciu_clk, cclkin); + if (ret) + dev_warn(host->dev, "failed to set rate %uHz\n", ios->clock); + + bus_hz = clk_get_rate(host->ciu_clk) / RK3288_CLKGEN_DIV; + if (bus_hz != host->bus_hz) { + host->bus_hz = bus_hz; + /* force dw_mci_setup_bus() */ + host->current_speed = 0; + } +} + +static const struct dw_mci_drv_data rk2928_drv_data = { + .prepare_command = dw_mci_rockchip_prepare_command, +}; + +static const struct dw_mci_drv_data rk3288_drv_data = { + .prepare_command = dw_mci_rockchip_prepare_command, + .set_ios = dw_mci_rk3288_set_ios, + .setup_clock = dw_mci_rk3288_setup_clock, +}; + +static const struct of_device_id dw_mci_rockchip_match[] = { + { .compatible = "rockchip,rk2928-dw-mshc", + .data = &rk2928_drv_data }, + { .compatible = "rockchip,rk3288-dw-mshc", + .data = &rk3288_drv_data }, + {}, +}; +MODULE_DEVICE_TABLE(of, dw_mci_rockchip_match); + +static int dw_mci_rockchip_probe(struct platform_device *pdev) +{ + const struct dw_mci_drv_data *drv_data; + const struct of_device_id *match; + + if (!pdev->dev.of_node) + return -ENODEV; + + match = of_match_node(dw_mci_rockchip_match, pdev->dev.of_node); + drv_data = match->data; + + return dw_mci_pltfm_register(pdev, drv_data); +} + +#ifdef CONFIG_PM_SLEEP +static int dw_mci_rockchip_suspend(struct device *dev) +{ + struct dw_mci *host = dev_get_drvdata(dev); + + return dw_mci_suspend(host); +} + +static int dw_mci_rockchip_resume(struct device *dev) +{ + struct dw_mci *host = dev_get_drvdata(dev); + + return dw_mci_resume(host); +} +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(dw_mci_rockchip_pmops, + dw_mci_rockchip_suspend, + dw_mci_rockchip_resume); + +static struct platform_driver dw_mci_rockchip_pltfm_driver = { + .probe = dw_mci_rockchip_probe, + .remove = __exit_p(dw_mci_pltfm_remove), + .driver = { + .name = "dwmmc_rockchip", + .of_match_table = dw_mci_rockchip_match, + .pm = &dw_mci_rockchip_pmops, + }, +}; + +module_platform_driver(dw_mci_rockchip_pltfm_driver); + +MODULE_AUTHOR("Addy Ke <addy.ke@rock-chips.com>"); +MODULE_DESCRIPTION("Rockchip Specific DW-MSHC Driver Extension"); +MODULE_ALIAS("platform:dwmmc-rockchip"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 8f216edbdf08..69f0cc68d5b2 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -29,6 +29,7 @@ #include <linux/irq.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> +#include <linux/mmc/sd.h> #include <linux/mmc/sdio.h> #include <linux/mmc/dw_mmc.h> #include <linux/bitops.h> @@ -81,36 +82,6 @@ struct idmac_desc { }; #endif /* CONFIG_MMC_DW_IDMAC */ -static const u8 tuning_blk_pattern_4bit[] = { - 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, - 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, - 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, - 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, - 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, - 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, - 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, - 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, -}; - -static const u8 tuning_blk_pattern_8bit[] = { - 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, - 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc, - 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff, - 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff, - 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd, - 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb, - 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff, - 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff, - 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, - 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, - 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, - 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, - 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, - 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, - 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, - 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, -}; - static bool dw_mci_reset(struct dw_mci *host); #if defined(CONFIG_DEBUG_FS) @@ -234,10 +205,13 @@ err: } #endif /* defined(CONFIG_DEBUG_FS) */ +static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg); + static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd) { struct mmc_data *data; struct dw_mci_slot *slot = mmc_priv(mmc); + struct dw_mci *host = slot->host; const struct dw_mci_drv_data *drv_data = slot->host->drv_data; u32 cmdr; cmd->error = -EINPROGRESS; @@ -253,6 +227,34 @@ static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd) else if (cmd->opcode != MMC_SEND_STATUS && cmd->data) cmdr |= SDMMC_CMD_PRV_DAT_WAIT; + if (cmd->opcode == SD_SWITCH_VOLTAGE) { + u32 clk_en_a; + + /* Special bit makes CMD11 not die */ + cmdr |= SDMMC_CMD_VOLT_SWITCH; + + /* Change state to continue to handle CMD11 weirdness */ + WARN_ON(slot->host->state != STATE_SENDING_CMD); + slot->host->state = STATE_SENDING_CMD11; + + /* + * We need to disable low power mode (automatic clock stop) + * while doing voltage switch so we don't confuse the card, + * since stopping the clock is a specific part of the UHS + * voltage change dance. + * + * Note that low power mode (SDMMC_CLKEN_LOW_PWR) will be + * unconditionally turned back on in dw_mci_setup_bus() if it's + * ever called with a non-zero clock. That shouldn't happen + * until the voltage change is all done. + */ + clk_en_a = mci_readl(host, CLKENA); + clk_en_a &= ~(SDMMC_CLKEN_LOW_PWR << slot->id); + mci_writel(host, CLKENA, clk_en_a); + mci_send_cmd(slot, SDMMC_CMD_UPD_CLK | + SDMMC_CMD_PRV_DAT_WAIT, 0); + } + if (cmd->flags & MMC_RSP_PRESENT) { /* We expect a response, so set this bit */ cmdr |= SDMMC_CMD_RESP_EXP; @@ -775,11 +777,15 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit) unsigned int clock = slot->clock; u32 div; u32 clk_en_a; + u32 sdmmc_cmd_bits = SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT; + + /* We must continue to set bit 28 in CMD until the change is complete */ + if (host->state == STATE_WAITING_CMD11_DONE) + sdmmc_cmd_bits |= SDMMC_CMD_VOLT_SWITCH; if (!clock) { mci_writel(host, CLKENA, 0); - mci_send_cmd(slot, - SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); + mci_send_cmd(slot, sdmmc_cmd_bits, 0); } else if (clock != host->current_speed || force_clkinit) { div = host->bus_hz / clock; if (host->bus_hz % clock && host->bus_hz > clock) @@ -803,15 +809,13 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit) mci_writel(host, CLKSRC, 0); /* inform CIU */ - mci_send_cmd(slot, - SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); + mci_send_cmd(slot, sdmmc_cmd_bits, 0); /* set clock to desired speed */ mci_writel(host, CLKDIV, div); /* inform CIU */ - mci_send_cmd(slot, - SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); + mci_send_cmd(slot, sdmmc_cmd_bits, 0); /* enable clock; only low power if no SDIO */ clk_en_a = SDMMC_CLKEN_ENABLE << slot->id; @@ -820,8 +824,7 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit) mci_writel(host, CLKENA, clk_en_a); /* inform CIU */ - mci_send_cmd(slot, - SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); + mci_send_cmd(slot, sdmmc_cmd_bits, 0); /* keep the clock with reflecting clock dividor */ slot->__clk_old = clock << div; @@ -897,6 +900,17 @@ static void dw_mci_queue_request(struct dw_mci *host, struct dw_mci_slot *slot, slot->mrq = mrq; + if (host->state == STATE_WAITING_CMD11_DONE) { + dev_warn(&slot->mmc->class_dev, + "Voltage change didn't complete\n"); + /* + * this case isn't expected to happen, so we can + * either crash here or just try to continue on + * in the closest possible state + */ + host->state = STATE_IDLE; + } + if (host->state == STATE_IDLE) { host->state = STATE_SENDING_CMD; dw_mci_start_request(host, slot); @@ -936,6 +950,7 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct dw_mci_slot *slot = mmc_priv(mmc); const struct dw_mci_drv_data *drv_data = slot->host->drv_data; u32 regs; + int ret; switch (ios->bus_width) { case MMC_BUS_WIDTH_4: @@ -972,14 +987,43 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) /* Slot specific timing and width adjustment */ dw_mci_setup_bus(slot, false); + if (slot->host->state == STATE_WAITING_CMD11_DONE && ios->clock != 0) + slot->host->state = STATE_IDLE; + switch (ios->power_mode) { case MMC_POWER_UP: + if (!IS_ERR(mmc->supply.vmmc)) { + ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, + ios->vdd); + if (ret) { + dev_err(slot->host->dev, + "failed to enable vmmc regulator\n"); + /*return, if failed turn on vmmc*/ + return; + } + } + if (!IS_ERR(mmc->supply.vqmmc) && !slot->host->vqmmc_enabled) { + ret = regulator_enable(mmc->supply.vqmmc); + if (ret < 0) + dev_err(slot->host->dev, + "failed to enable vqmmc regulator\n"); + else + slot->host->vqmmc_enabled = true; + } set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags); regs = mci_readl(slot->host, PWREN); regs |= (1 << slot->id); mci_writel(slot->host, PWREN, regs); break; case MMC_POWER_OFF: + if (!IS_ERR(mmc->supply.vmmc)) + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); + + if (!IS_ERR(mmc->supply.vqmmc) && slot->host->vqmmc_enabled) { + regulator_disable(mmc->supply.vqmmc); + slot->host->vqmmc_enabled = false; + } + regs = mci_readl(slot->host, PWREN); regs &= ~(1 << slot->id); mci_writel(slot->host, PWREN, regs); @@ -989,6 +1033,59 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } } +static int dw_mci_card_busy(struct mmc_host *mmc) +{ + struct dw_mci_slot *slot = mmc_priv(mmc); + u32 status; + + /* + * Check the busy bit which is low when DAT[3:0] + * (the data lines) are 0000 + */ + status = mci_readl(slot->host, STATUS); + + return !!(status & SDMMC_STATUS_BUSY); +} + +static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct dw_mci_slot *slot = mmc_priv(mmc); + struct dw_mci *host = slot->host; + u32 uhs; + u32 v18 = SDMMC_UHS_18V << slot->id; + int min_uv, max_uv; + int ret; + + /* + * Program the voltage. Note that some instances of dw_mmc may use + * the UHS_REG for this. For other instances (like exynos) the UHS_REG + * does no harm but you need to set the regulator directly. Try both. + */ + uhs = mci_readl(host, UHS_REG); + if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) { + min_uv = 2700000; + max_uv = 3600000; + uhs &= ~v18; + } else { + min_uv = 1700000; + max_uv = 1950000; + uhs |= v18; + } + if (!IS_ERR(mmc->supply.vqmmc)) { + ret = regulator_set_voltage(mmc->supply.vqmmc, min_uv, max_uv); + + if (ret) { + dev_err(&mmc->class_dev, + "Regulator set error %d: %d - %d\n", + ret, min_uv, max_uv); + return ret; + } + } + mci_writel(host, UHS_REG, uhs); + + return 0; +} + static int dw_mci_get_ro(struct mmc_host *mmc) { int read_only; @@ -1131,6 +1228,9 @@ static const struct mmc_host_ops dw_mci_ops = { .get_cd = dw_mci_get_cd, .enable_sdio_irq = dw_mci_enable_sdio_irq, .execute_tuning = dw_mci_execute_tuning, + .card_busy = dw_mci_card_busy, + .start_signal_voltage_switch = dw_mci_switch_voltage, + }; static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq) @@ -1154,7 +1254,11 @@ static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq) dw_mci_start_request(host, slot); } else { dev_vdbg(host->dev, "list empty\n"); - host->state = STATE_IDLE; + + if (host->state == STATE_SENDING_CMD11) + host->state = STATE_WAITING_CMD11_DONE; + else + host->state = STATE_IDLE; } spin_unlock(&host->lock); @@ -1265,8 +1369,10 @@ static void dw_mci_tasklet_func(unsigned long priv) switch (state) { case STATE_IDLE: + case STATE_WAITING_CMD11_DONE: break; + case STATE_SENDING_CMD11: case STATE_SENDING_CMD: if (!test_and_clear_bit(EVENT_CMD_COMPLETE, &host->pending_events)) @@ -1299,6 +1405,14 @@ static void dw_mci_tasklet_func(unsigned long priv) /* fall through */ case STATE_SENDING_DATA: + /* + * We could get a data error and never a transfer + * complete so we'd better check for it here. + * + * Note that we don't really care if we also got a + * transfer complete; stopping the DMA and sending an + * abort won't hurt. + */ if (test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)) { dw_mci_stop_dma(host); @@ -1312,7 +1426,29 @@ static void dw_mci_tasklet_func(unsigned long priv) break; set_bit(EVENT_XFER_COMPLETE, &host->completed_events); + + /* + * Handle an EVENT_DATA_ERROR that might have shown up + * before the transfer completed. This might not have + * been caught by the check above because the interrupt + * could have gone off between the previous check and + * the check for transfer complete. + * + * Technically this ought not be needed assuming we + * get a DATA_COMPLETE eventually (we'll notice the + * error and end the request), but it shouldn't hurt. + * + * This has the advantage of sending the stop command. + */ + if (test_and_clear_bit(EVENT_DATA_ERROR, + &host->pending_events)) { + dw_mci_stop_dma(host); + send_stop_abort(host, data); + state = STATE_DATA_ERROR; + break; + } prev_state = state = STATE_DATA_BUSY; + /* fall through */ case STATE_DATA_BUSY: @@ -1335,6 +1471,22 @@ static void dw_mci_tasklet_func(unsigned long priv) /* stop command for open-ended transfer*/ if (data->stop) send_stop_abort(host, data); + } else { + /* + * If we don't have a command complete now we'll + * never get one since we just reset everything; + * better end the request. + * + * If we do have a command complete we'll fall + * through to the SENDING_STOP command and + * everything will be peachy keen. + */ + if (!test_bit(EVENT_CMD_COMPLETE, + &host->pending_events)) { + host->cmd = NULL; + dw_mci_request_end(host, mrq); + goto unlock; + } } /* @@ -1821,6 +1973,14 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id) } if (pending) { + /* Check volt switch first, since it can look like an error */ + if ((host->state == STATE_SENDING_CMD11) && + (pending & SDMMC_INT_VOLT_SWITCH)) { + mci_writel(host, RINTSTS, SDMMC_INT_VOLT_SWITCH); + pending &= ~SDMMC_INT_VOLT_SWITCH; + dw_mci_cmd_interrupt(host, pending); + } + if (pending & DW_MCI_CMD_ERROR_FLAGS) { mci_writel(host, RINTSTS, DW_MCI_CMD_ERROR_FLAGS); host->cmd_status = pending; @@ -1926,7 +2086,9 @@ static void dw_mci_work_routine_card(struct work_struct *work) switch (host->state) { case STATE_IDLE: + case STATE_WAITING_CMD11_DONE: break; + case STATE_SENDING_CMD11: case STATE_SENDING_CMD: mrq->cmd->error = -ENOMEDIUM; if (!mrq->data) @@ -2028,10 +2190,6 @@ static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot) { return 0; } -static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot) -{ - return NULL; -} #endif /* CONFIG_OF */ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) @@ -2064,7 +2222,13 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) mmc->f_max = freq[1]; } - mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + /*if there are external regulators, get them*/ + ret = mmc_regulator_get_supply(mmc); + if (ret == -EPROBE_DEFER) + goto err_host_allocated; + + if (!mmc->ocr_avail) + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; if (host->pdata->caps) mmc->caps = host->pdata->caps; @@ -2085,7 +2249,9 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) if (host->pdata->caps2) mmc->caps2 = host->pdata->caps2; - mmc_of_parse(mmc); + ret = mmc_of_parse(mmc); + if (ret) + goto err_host_allocated; if (host->pdata->blk_settings) { mmc->max_segs = host->pdata->blk_settings->max_segs; @@ -2117,7 +2283,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) ret = mmc_add_host(mmc); if (ret) - goto err_setup_bus; + goto err_host_allocated; #if defined(CONFIG_DEBUG_FS) dw_mci_init_debugfs(slot); @@ -2128,9 +2294,9 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) return 0; -err_setup_bus: +err_host_allocated: mmc_free_host(mmc); - return -EINVAL; + return ret; } static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id) @@ -2423,24 +2589,6 @@ int dw_mci_probe(struct dw_mci *host) } } - host->vmmc = devm_regulator_get_optional(host->dev, "vmmc"); - if (IS_ERR(host->vmmc)) { - ret = PTR_ERR(host->vmmc); - if (ret == -EPROBE_DEFER) - goto err_clk_ciu; - - dev_info(host->dev, "no vmmc regulator found: %d\n", ret); - host->vmmc = NULL; - } else { - ret = regulator_enable(host->vmmc); - if (ret) { - if (ret != -EPROBE_DEFER) - dev_err(host->dev, - "regulator_enable fail: %d\n", ret); - goto err_clk_ciu; - } - } - host->quirks = host->pdata->quirks; spin_lock_init(&host->lock); @@ -2584,8 +2732,6 @@ err_workqueue: err_dmaunmap: if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); - if (host->vmmc) - regulator_disable(host->vmmc); err_clk_ciu: if (!IS_ERR(host->ciu_clk)) @@ -2621,9 +2767,6 @@ void dw_mci_remove(struct dw_mci *host) if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); - if (host->vmmc) - regulator_disable(host->vmmc); - if (!IS_ERR(host->ciu_clk)) clk_disable_unprepare(host->ciu_clk); @@ -2640,9 +2783,6 @@ EXPORT_SYMBOL(dw_mci_remove); */ int dw_mci_suspend(struct dw_mci *host) { - if (host->vmmc) - regulator_disable(host->vmmc); - return 0; } EXPORT_SYMBOL(dw_mci_suspend); @@ -2651,15 +2791,6 @@ int dw_mci_resume(struct dw_mci *host) { int i, ret; - if (host->vmmc) { - ret = regulator_enable(host->vmmc); - if (ret) { - dev_err(host->dev, - "failed to enable regulator: %d\n", ret); - return ret; - } - } - if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_ALL_RESET_FLAGS)) { ret = -ENODEV; return ret; diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 08fd956d81f3..01b99e8a9190 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -99,6 +99,7 @@ #define SDMMC_INT_HLE BIT(12) #define SDMMC_INT_FRUN BIT(11) #define SDMMC_INT_HTO BIT(10) +#define SDMMC_INT_VOLT_SWITCH BIT(10) /* overloads bit 10! */ #define SDMMC_INT_DRTO BIT(9) #define SDMMC_INT_RTO BIT(8) #define SDMMC_INT_DCRC BIT(7) @@ -113,6 +114,7 @@ /* Command register defines */ #define SDMMC_CMD_START BIT(31) #define SDMMC_CMD_USE_HOLD_REG BIT(29) +#define SDMMC_CMD_VOLT_SWITCH BIT(28) #define SDMMC_CMD_CCS_EXP BIT(23) #define SDMMC_CMD_CEATA_RD BIT(22) #define SDMMC_CMD_UPD_CLK BIT(21) @@ -130,6 +132,7 @@ /* Status register defines */ #define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF) #define SDMMC_STATUS_DMA_REQ BIT(31) +#define SDMMC_STATUS_BUSY BIT(9) /* FIFOTH register defines */ #define SDMMC_SET_FIFOTH(m, r, t) (((m) & 0x7) << 28 | \ ((r) & 0xFFF) << 16 | \ @@ -150,7 +153,7 @@ #define SDMMC_GET_VERID(x) ((x) & 0xFFFF) /* Card read threshold */ #define SDMMC_SET_RD_THLD(v, x) (((v) & 0x1FFF) << 16 | (x)) - +#define SDMMC_UHS_18V BIT(0) /* All ctrl reset bits */ #define SDMMC_CTRL_ALL_RESET_FLAGS \ (SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET) diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index 537d6c7a5ae4..76e8bce6f46e 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -30,7 +30,9 @@ #include <asm/mach-jz4740/gpio.h> #include <asm/cacheflush.h> #include <linux/dma-mapping.h> +#include <linux/dmaengine.h> +#include <asm/mach-jz4740/dma.h> #include <asm/mach-jz4740/jz4740_mmc.h> #define JZ_REG_MMC_STRPCL 0x00 @@ -112,6 +114,11 @@ enum jz4740_mmc_state { JZ4740_MMC_STATE_DONE, }; +struct jz4740_mmc_host_next { + int sg_len; + s32 cookie; +}; + struct jz4740_mmc_host { struct mmc_host *mmc; struct platform_device *pdev; @@ -122,6 +129,7 @@ struct jz4740_mmc_host { int card_detect_irq; void __iomem *base; + struct resource *mem_res; struct mmc_request *req; struct mmc_command *cmd; @@ -136,8 +144,220 @@ struct jz4740_mmc_host { struct timer_list timeout_timer; struct sg_mapping_iter miter; enum jz4740_mmc_state state; + + /* DMA support */ + struct dma_chan *dma_rx; + struct dma_chan *dma_tx; + struct jz4740_mmc_host_next next_data; + bool use_dma; + int sg_len; + +/* The DMA trigger level is 8 words, that is to say, the DMA read + * trigger is when data words in MSC_RXFIFO is >= 8 and the DMA write + * trigger is when data words in MSC_TXFIFO is < 8. + */ +#define JZ4740_MMC_FIFO_HALF_SIZE 8 }; +/*----------------------------------------------------------------------------*/ +/* DMA infrastructure */ + +static void jz4740_mmc_release_dma_channels(struct jz4740_mmc_host *host) +{ + if (!host->use_dma) + return; + + dma_release_channel(host->dma_tx); + dma_release_channel(host->dma_rx); +} + +static int jz4740_mmc_acquire_dma_channels(struct jz4740_mmc_host *host) +{ + dma_cap_mask_t mask; + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + host->dma_tx = dma_request_channel(mask, NULL, host); + if (!host->dma_tx) { + dev_err(mmc_dev(host->mmc), "Failed to get dma_tx channel\n"); + return -ENODEV; + } + + host->dma_rx = dma_request_channel(mask, NULL, host); + if (!host->dma_rx) { + dev_err(mmc_dev(host->mmc), "Failed to get dma_rx channel\n"); + goto free_master_write; + } + + /* Initialize DMA pre request cookie */ + host->next_data.cookie = 1; + + return 0; + +free_master_write: + dma_release_channel(host->dma_tx); + return -ENODEV; +} + +static inline int jz4740_mmc_get_dma_dir(struct mmc_data *data) +{ + return (data->flags & MMC_DATA_READ) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; +} + +static inline struct dma_chan *jz4740_mmc_get_dma_chan(struct jz4740_mmc_host *host, + struct mmc_data *data) +{ + return (data->flags & MMC_DATA_READ) ? host->dma_rx : host->dma_tx; +} + +static void jz4740_mmc_dma_unmap(struct jz4740_mmc_host *host, + struct mmc_data *data) +{ + struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data); + enum dma_data_direction dir = jz4740_mmc_get_dma_dir(data); + + dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir); +} + +/* Prepares DMA data for current/next transfer, returns non-zero on failure */ +static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host, + struct mmc_data *data, + struct jz4740_mmc_host_next *next, + struct dma_chan *chan) +{ + struct jz4740_mmc_host_next *next_data = &host->next_data; + enum dma_data_direction dir = jz4740_mmc_get_dma_dir(data); + int sg_len; + + if (!next && data->host_cookie && + data->host_cookie != host->next_data.cookie) { + dev_warn(mmc_dev(host->mmc), + "[%s] invalid cookie: data->host_cookie %d host->next_data.cookie %d\n", + __func__, + data->host_cookie, + host->next_data.cookie); + data->host_cookie = 0; + } + + /* Check if next job is already prepared */ + if (next || data->host_cookie != host->next_data.cookie) { + sg_len = dma_map_sg(chan->device->dev, + data->sg, + data->sg_len, + dir); + + } else { + sg_len = next_data->sg_len; + next_data->sg_len = 0; + } + + if (sg_len <= 0) { + dev_err(mmc_dev(host->mmc), + "Failed to map scatterlist for DMA operation\n"); + return -EINVAL; + } + + if (next) { + next->sg_len = sg_len; + data->host_cookie = ++next->cookie < 0 ? 1 : next->cookie; + } else + host->sg_len = sg_len; + + return 0; +} + +static int jz4740_mmc_start_dma_transfer(struct jz4740_mmc_host *host, + struct mmc_data *data) +{ + int ret; + struct dma_chan *chan; + struct dma_async_tx_descriptor *desc; + struct dma_slave_config conf = { + .src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, + .dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, + .src_maxburst = JZ4740_MMC_FIFO_HALF_SIZE, + .dst_maxburst = JZ4740_MMC_FIFO_HALF_SIZE, + }; + + if (data->flags & MMC_DATA_WRITE) { + conf.direction = DMA_MEM_TO_DEV; + conf.dst_addr = host->mem_res->start + JZ_REG_MMC_TXFIFO; + conf.slave_id = JZ4740_DMA_TYPE_MMC_TRANSMIT; + chan = host->dma_tx; + } else { + conf.direction = DMA_DEV_TO_MEM; + conf.src_addr = host->mem_res->start + JZ_REG_MMC_RXFIFO; + conf.slave_id = JZ4740_DMA_TYPE_MMC_RECEIVE; + chan = host->dma_rx; + } + + ret = jz4740_mmc_prepare_dma_data(host, data, NULL, chan); + if (ret) + return ret; + + dmaengine_slave_config(chan, &conf); + desc = dmaengine_prep_slave_sg(chan, + data->sg, + host->sg_len, + conf.direction, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!desc) { + dev_err(mmc_dev(host->mmc), + "Failed to allocate DMA %s descriptor", + conf.direction == DMA_MEM_TO_DEV ? "TX" : "RX"); + goto dma_unmap; + } + + dmaengine_submit(desc); + dma_async_issue_pending(chan); + + return 0; + +dma_unmap: + jz4740_mmc_dma_unmap(host, data); + return -ENOMEM; +} + +static void jz4740_mmc_pre_request(struct mmc_host *mmc, + struct mmc_request *mrq, + bool is_first_req) +{ + struct jz4740_mmc_host *host = mmc_priv(mmc); + struct mmc_data *data = mrq->data; + struct jz4740_mmc_host_next *next_data = &host->next_data; + + BUG_ON(data->host_cookie); + + if (host->use_dma) { + struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data); + + if (jz4740_mmc_prepare_dma_data(host, data, next_data, chan)) + data->host_cookie = 0; + } +} + +static void jz4740_mmc_post_request(struct mmc_host *mmc, + struct mmc_request *mrq, + int err) +{ + struct jz4740_mmc_host *host = mmc_priv(mmc); + struct mmc_data *data = mrq->data; + + if (host->use_dma && data->host_cookie) { + jz4740_mmc_dma_unmap(host, data); + data->host_cookie = 0; + } + + if (err) { + struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data); + + dmaengine_terminate_all(chan); + } +} + +/*----------------------------------------------------------------------------*/ + static void jz4740_mmc_set_irq_enabled(struct jz4740_mmc_host *host, unsigned int irq, bool enabled) { @@ -442,6 +662,8 @@ static void jz4740_mmc_send_command(struct jz4740_mmc_host *host, cmdat |= JZ_MMC_CMDAT_WRITE; if (cmd->data->flags & MMC_DATA_STREAM) cmdat |= JZ_MMC_CMDAT_STREAM; + if (host->use_dma) + cmdat |= JZ_MMC_CMDAT_DMA_EN; writew(cmd->data->blksz, host->base + JZ_REG_MMC_BLKLEN); writew(cmd->data->blocks, host->base + JZ_REG_MMC_NOB); @@ -474,6 +696,7 @@ static irqreturn_t jz_mmc_irq_worker(int irq, void *devid) struct jz4740_mmc_host *host = (struct jz4740_mmc_host *)devid; struct mmc_command *cmd = host->req->cmd; struct mmc_request *req = host->req; + struct mmc_data *data = cmd->data; bool timeout = false; if (cmd->error) @@ -484,23 +707,37 @@ static irqreturn_t jz_mmc_irq_worker(int irq, void *devid) if (cmd->flags & MMC_RSP_PRESENT) jz4740_mmc_read_response(host, cmd); - if (!cmd->data) + if (!data) break; jz_mmc_prepare_data_transfer(host); case JZ4740_MMC_STATE_TRANSFER_DATA: - if (cmd->data->flags & MMC_DATA_READ) - timeout = jz4740_mmc_read_data(host, cmd->data); + if (host->use_dma) { + /* Use DMA if enabled. + * Data transfer direction is defined later by + * relying on data flags in + * jz4740_mmc_prepare_dma_data() and + * jz4740_mmc_start_dma_transfer(). + */ + timeout = jz4740_mmc_start_dma_transfer(host, data); + data->bytes_xfered = data->blocks * data->blksz; + } else if (data->flags & MMC_DATA_READ) + /* Use PIO if DMA is not enabled. + * Data transfer direction was defined before + * by relying on data flags in + * jz_mmc_prepare_data_transfer(). + */ + timeout = jz4740_mmc_read_data(host, data); else - timeout = jz4740_mmc_write_data(host, cmd->data); + timeout = jz4740_mmc_write_data(host, data); if (unlikely(timeout)) { host->state = JZ4740_MMC_STATE_TRANSFER_DATA; break; } - jz4740_mmc_transfer_check_state(host, cmd->data); + jz4740_mmc_transfer_check_state(host, data); timeout = jz4740_mmc_poll_irq(host, JZ_MMC_IRQ_DATA_TRAN_DONE); if (unlikely(timeout)) { @@ -664,6 +901,8 @@ static void jz4740_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) static const struct mmc_host_ops jz4740_mmc_ops = { .request = jz4740_mmc_request, + .pre_req = jz4740_mmc_pre_request, + .post_req = jz4740_mmc_post_request, .set_ios = jz4740_mmc_set_ios, .get_ro = mmc_gpio_get_ro, .get_cd = mmc_gpio_get_cd, @@ -757,7 +996,6 @@ static int jz4740_mmc_probe(struct platform_device* pdev) struct mmc_host *mmc; struct jz4740_mmc_host *host; struct jz4740_mmc_platform_data *pdata; - struct resource *res; pdata = pdev->dev.platform_data; @@ -784,10 +1022,11 @@ static int jz4740_mmc_probe(struct platform_device* pdev) goto err_free_host; } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - host->base = devm_ioremap_resource(&pdev->dev, res); + host->mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + host->base = devm_ioremap_resource(&pdev->dev, host->mem_res); if (IS_ERR(host->base)) { ret = PTR_ERR(host->base); + dev_err(&pdev->dev, "Failed to ioremap base memory\n"); goto err_free_host; } @@ -834,6 +1073,10 @@ static int jz4740_mmc_probe(struct platform_device* pdev) /* It is not important when it times out, it just needs to timeout. */ set_timer_slack(&host->timeout_timer, HZ); + host->use_dma = true; + if (host->use_dma && jz4740_mmc_acquire_dma_channels(host) != 0) + host->use_dma = false; + platform_set_drvdata(pdev, host); ret = mmc_add_host(mmc); @@ -843,6 +1086,10 @@ static int jz4740_mmc_probe(struct platform_device* pdev) } dev_info(&pdev->dev, "JZ SD/MMC card driver registered\n"); + dev_info(&pdev->dev, "Using %s, %d-bit mode\n", + host->use_dma ? "DMA" : "PIO", + (mmc->caps & MMC_CAP_4_BIT_DATA) ? 4 : 1); + return 0; err_free_irq: @@ -850,6 +1097,8 @@ err_free_irq: err_free_gpios: jz4740_mmc_free_gpios(pdev); err_gpio_bulk_free: + if (host->use_dma) + jz4740_mmc_release_dma_channels(host); jz_gpio_bulk_free(jz4740_mmc_pins, jz4740_mmc_num_pins(host)); err_free_host: mmc_free_host(mmc); @@ -872,6 +1121,9 @@ static int jz4740_mmc_remove(struct platform_device *pdev) jz4740_mmc_free_gpios(pdev); jz_gpio_bulk_free(jz4740_mmc_pins, jz4740_mmc_num_pins(host)); + if (host->use_dma) + jz4740_mmc_release_dma_channels(host); + mmc_free_host(host->mmc); return 0; @@ -909,7 +1161,6 @@ static struct platform_driver jz4740_mmc_driver = { .remove = jz4740_mmc_remove, .driver = { .name = "jz4740-mmc", - .owner = THIS_MODULE, .pm = JZ4740_MMC_PM_OPS, }, }; diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index cc8d4a6099cd..e4a07546f8b6 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1436,6 +1436,7 @@ static int mmc_spi_probe(struct spi_device *spi) host->pdata->cd_debounce); if (status != 0) goto fail_add_host; + mmc_gpiod_request_cd_irq(mmc); } if (host->pdata && host->pdata->flags & MMC_SPI_USE_RO_GPIO) { diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index e4d470704150..43af791e2e45 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -43,6 +43,7 @@ #include <asm/sizes.h> #include "mmci.h" +#include "mmci_qcom_dml.h" #define DRIVER_NAME "mmci-pl18x" @@ -60,12 +61,13 @@ static unsigned int fmax = 515633; * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY * is asserted (likewise for RX) * @data_cmd_enable: enable value for data commands. - * @sdio: variant supports SDIO + * @st_sdio: enable ST specific SDIO logic * @st_clkdiv: true if using a ST-specific clock divider algorithm * @datactrl_mask_ddrmode: ddr mode mask in datactrl register. * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register * @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl * register + * @datactrl_mask_sdio: SDIO enable mask in datactrl register * @pwrreg_powerup: power up value for MMCIPOWER register * @f_max: maximum clk frequency supported by the controller. * @signal_direction: input/out direction of bus signals can be indicated @@ -74,6 +76,7 @@ static unsigned int fmax = 515633; * @pwrreg_nopower: bits in MMCIPOWER don't controls ext. power supply * @explicit_mclk_control: enable explicit mclk control in driver. * @qcom_fifo: enables qcom specific fifo pio read logic. + * @qcom_dml: enables qcom specific dma glue for dma transfers. * @reversed_irq_handling: handle data irq before cmd irq. */ struct variant_data { @@ -86,7 +89,8 @@ struct variant_data { unsigned int fifohalfsize; unsigned int data_cmd_enable; unsigned int datactrl_mask_ddrmode; - bool sdio; + unsigned int datactrl_mask_sdio; + bool st_sdio; bool st_clkdiv; bool blksz_datactrl16; bool blksz_datactrl4; @@ -98,6 +102,7 @@ struct variant_data { bool pwrreg_nopower; bool explicit_mclk_control; bool qcom_fifo; + bool qcom_dml; bool reversed_irq_handling; }; @@ -133,7 +138,8 @@ static struct variant_data variant_u300 = { .clkreg_enable = MCI_ST_U300_HWFCEN, .clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS, .datalength_bits = 16, - .sdio = true, + .datactrl_mask_sdio = MCI_ST_DPSM_SDIOEN, + .st_sdio = true, .pwrreg_powerup = MCI_PWR_ON, .f_max = 100000000, .signal_direction = true, @@ -146,7 +152,8 @@ static struct variant_data variant_nomadik = { .fifohalfsize = 8 * 4, .clkreg = MCI_CLK_ENABLE, .datalength_bits = 24, - .sdio = true, + .datactrl_mask_sdio = MCI_ST_DPSM_SDIOEN, + .st_sdio = true, .st_clkdiv = true, .pwrreg_powerup = MCI_PWR_ON, .f_max = 100000000, @@ -163,7 +170,8 @@ static struct variant_data variant_ux500 = { .clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS, .clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE, .datalength_bits = 24, - .sdio = true, + .datactrl_mask_sdio = MCI_ST_DPSM_SDIOEN, + .st_sdio = true, .st_clkdiv = true, .pwrreg_powerup = MCI_PWR_ON, .f_max = 100000000, @@ -182,7 +190,8 @@ static struct variant_data variant_ux500v2 = { .clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE, .datactrl_mask_ddrmode = MCI_ST_DPSM_DDRMODE, .datalength_bits = 24, - .sdio = true, + .datactrl_mask_sdio = MCI_ST_DPSM_SDIOEN, + .st_sdio = true, .st_clkdiv = true, .blksz_datactrl16 = true, .pwrreg_powerup = MCI_PWR_ON, @@ -208,6 +217,7 @@ static struct variant_data variant_qcom = { .f_max = 208000000, .explicit_mclk_control = true, .qcom_fifo = true, + .qcom_dml = true, }; static int mmci_card_busy(struct mmc_host *mmc) @@ -421,6 +431,7 @@ static void mmci_dma_setup(struct mmci_host *host) { const char *rxname, *txname; dma_cap_mask_t mask; + struct variant_data *variant = host->variant; host->dma_rx_channel = dma_request_slave_channel(mmc_dev(host->mmc), "rx"); host->dma_tx_channel = dma_request_slave_channel(mmc_dev(host->mmc), "tx"); @@ -471,6 +482,10 @@ static void mmci_dma_setup(struct mmci_host *host) if (max_seg_size < host->mmc->max_seg_size) host->mmc->max_seg_size = max_seg_size; } + + if (variant->qcom_dml && host->dma_rx_channel && host->dma_tx_channel) + if (dml_hw_init(host, host->mmc->parent->of_node)) + variant->qcom_dml = false; } /* @@ -572,6 +587,7 @@ static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, struct dma_async_tx_descriptor *desc; enum dma_data_direction buffer_dirn; int nr_sg; + unsigned long flags = DMA_CTRL_ACK; if (data->flags & MMC_DATA_READ) { conf.direction = DMA_DEV_TO_MEM; @@ -596,9 +612,12 @@ static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, if (nr_sg == 0) return -EINVAL; + if (host->variant->qcom_dml) + flags |= DMA_PREP_INTERRUPT; + dmaengine_slave_config(chan, &conf); desc = dmaengine_prep_slave_sg(chan, data->sg, nr_sg, - conf.direction, DMA_CTRL_ACK); + conf.direction, flags); if (!desc) goto unmap_exit; @@ -647,6 +666,9 @@ static int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) dmaengine_submit(host->dma_desc_current); dma_async_issue_pending(host->dma_current); + if (host->variant->qcom_dml) + dml_start_xfer(host, data); + datactrl |= MCI_DPSM_DMAENABLE; /* Trigger the DMA transfer */ @@ -792,32 +814,26 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) datactrl |= MCI_DPSM_DIRECTION; - /* The ST Micro variants has a special bit to enable SDIO */ - if (variant->sdio && host->mmc->card) - if (mmc_card_sdio(host->mmc->card)) { - /* - * The ST Micro variants has a special bit - * to enable SDIO. - */ - u32 clk; + if (host->mmc->card && mmc_card_sdio(host->mmc->card)) { + u32 clk; - datactrl |= MCI_ST_DPSM_SDIOEN; + datactrl |= variant->datactrl_mask_sdio; - /* - * The ST Micro variant for SDIO small write transfers - * needs to have clock H/W flow control disabled, - * otherwise the transfer will not start. The threshold - * depends on the rate of MCLK. - */ - if (data->flags & MMC_DATA_WRITE && - (host->size < 8 || - (host->size <= 8 && host->mclk > 50000000))) - clk = host->clk_reg & ~variant->clkreg_enable; - else - clk = host->clk_reg | variant->clkreg_enable; + /* + * The ST Micro variant for SDIO small write transfers + * needs to have clock H/W flow control disabled, + * otherwise the transfer will not start. The threshold + * depends on the rate of MCLK. + */ + if (variant->st_sdio && data->flags & MMC_DATA_WRITE && + (host->size < 8 || + (host->size <= 8 && host->mclk > 50000000))) + clk = host->clk_reg & ~variant->clkreg_enable; + else + clk = host->clk_reg | variant->clkreg_enable; - mmci_write_clkreg(host, clk); - } + mmci_write_clkreg(host, clk); + } if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 || host->mmc->ios.timing == MMC_TIMING_MMC_DDR52) @@ -1658,16 +1674,35 @@ static int mmci_probe(struct amba_device *dev, writel(0, host->base + MMCIMASK1); writel(0xfff, host->base + MMCICLEAR); - /* If DT, cd/wp gpios must be supplied through it. */ - if (!np && gpio_is_valid(plat->gpio_cd)) { - ret = mmc_gpio_request_cd(mmc, plat->gpio_cd, 0); - if (ret) - goto clk_disable; - } - if (!np && gpio_is_valid(plat->gpio_wp)) { - ret = mmc_gpio_request_ro(mmc, plat->gpio_wp); - if (ret) - goto clk_disable; + /* + * If: + * - not using DT but using a descriptor table, or + * - using a table of descriptors ALONGSIDE DT, or + * look up these descriptors named "cd" and "wp" right here, fail + * silently of these do not exist and proceed to try platform data + */ + if (!np) { + ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0, NULL); + if (ret < 0) { + if (ret == -EPROBE_DEFER) + goto clk_disable; + else if (gpio_is_valid(plat->gpio_cd)) { + ret = mmc_gpio_request_cd(mmc, plat->gpio_cd, 0); + if (ret) + goto clk_disable; + } + } + + ret = mmc_gpiod_request_ro(mmc, "wp", 0, false, 0, NULL); + if (ret < 0) { + if (ret == -EPROBE_DEFER) + goto clk_disable; + else if (gpio_is_valid(plat->gpio_wp)) { + ret = mmc_gpio_request_ro(mmc, plat->gpio_wp); + if (ret) + goto clk_disable; + } + } } ret = devm_request_irq(&dev->dev, dev->irq[0], mmci_irq, IRQF_SHARED, diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_dml.c new file mode 100644 index 000000000000..2b7fc3764803 --- /dev/null +++ b/drivers/mmc/host/mmci_qcom_dml.c @@ -0,0 +1,177 @@ +/* + * + * Copyright (c) 2011, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#include <linux/of.h> +#include <linux/of_dma.h> +#include <linux/bitops.h> +#include <linux/mmc/host.h> +#include <linux/mmc/card.h> +#include "mmci.h" + +/* Registers */ +#define DML_CONFIG 0x00 +#define PRODUCER_CRCI_MSK GENMASK(1, 0) +#define PRODUCER_CRCI_DISABLE 0 +#define PRODUCER_CRCI_X_SEL BIT(0) +#define PRODUCER_CRCI_Y_SEL BIT(1) +#define CONSUMER_CRCI_MSK GENMASK(3, 2) +#define CONSUMER_CRCI_DISABLE 0 +#define CONSUMER_CRCI_X_SEL BIT(2) +#define CONSUMER_CRCI_Y_SEL BIT(3) +#define PRODUCER_TRANS_END_EN BIT(4) +#define BYPASS BIT(16) +#define DIRECT_MODE BIT(17) +#define INFINITE_CONS_TRANS BIT(18) + +#define DML_SW_RESET 0x08 +#define DML_PRODUCER_START 0x0c +#define DML_CONSUMER_START 0x10 +#define DML_PRODUCER_PIPE_LOGICAL_SIZE 0x14 +#define DML_CONSUMER_PIPE_LOGICAL_SIZE 0x18 +#define DML_PIPE_ID 0x1c +#define PRODUCER_PIPE_ID_SHFT 0 +#define PRODUCER_PIPE_ID_MSK GENMASK(4, 0) +#define CONSUMER_PIPE_ID_SHFT 16 +#define CONSUMER_PIPE_ID_MSK GENMASK(20, 16) + +#define DML_PRODUCER_BAM_BLOCK_SIZE 0x24 +#define DML_PRODUCER_BAM_TRANS_SIZE 0x28 + +/* other definitions */ +#define PRODUCER_PIPE_LOGICAL_SIZE 4096 +#define CONSUMER_PIPE_LOGICAL_SIZE 4096 + +#define DML_OFFSET 0x800 + +void dml_start_xfer(struct mmci_host *host, struct mmc_data *data) +{ + u32 config; + void __iomem *base = host->base + DML_OFFSET; + + if (data->flags & MMC_DATA_READ) { + /* Read operation: configure DML for producer operation */ + /* Set producer CRCI-x and disable consumer CRCI */ + config = readl_relaxed(base + DML_CONFIG); + config = (config & ~PRODUCER_CRCI_MSK) | PRODUCER_CRCI_X_SEL; + config = (config & ~CONSUMER_CRCI_MSK) | CONSUMER_CRCI_DISABLE; + writel_relaxed(config, base + DML_CONFIG); + + /* Set the Producer BAM block size */ + writel_relaxed(data->blksz, base + DML_PRODUCER_BAM_BLOCK_SIZE); + + /* Set Producer BAM Transaction size */ + writel_relaxed(data->blocks * data->blksz, + base + DML_PRODUCER_BAM_TRANS_SIZE); + /* Set Producer Transaction End bit */ + config = readl_relaxed(base + DML_CONFIG); + config |= PRODUCER_TRANS_END_EN; + writel_relaxed(config, base + DML_CONFIG); + /* Trigger producer */ + writel_relaxed(1, base + DML_PRODUCER_START); + } else { + /* Write operation: configure DML for consumer operation */ + /* Set consumer CRCI-x and disable producer CRCI*/ + config = readl_relaxed(base + DML_CONFIG); + config = (config & ~CONSUMER_CRCI_MSK) | CONSUMER_CRCI_X_SEL; + config = (config & ~PRODUCER_CRCI_MSK) | PRODUCER_CRCI_DISABLE; + writel_relaxed(config, base + DML_CONFIG); + /* Clear Producer Transaction End bit */ + config = readl_relaxed(base + DML_CONFIG); + config &= ~PRODUCER_TRANS_END_EN; + writel_relaxed(config, base + DML_CONFIG); + /* Trigger consumer */ + writel_relaxed(1, base + DML_CONSUMER_START); + } + + /* make sure the dml is configured before dma is triggered */ + wmb(); +} + +static int of_get_dml_pipe_index(struct device_node *np, const char *name) +{ + int index; + struct of_phandle_args dma_spec; + + index = of_property_match_string(np, "dma-names", name); + + if (index < 0) + return -ENODEV; + + if (of_parse_phandle_with_args(np, "dmas", "#dma-cells", index, + &dma_spec)) + return -ENODEV; + + if (dma_spec.args_count) + return dma_spec.args[0]; + + return -ENODEV; +} + +/* Initialize the dml hardware connected to SD Card controller */ +int dml_hw_init(struct mmci_host *host, struct device_node *np) +{ + u32 config; + void __iomem *base; + int consumer_id, producer_id; + + consumer_id = of_get_dml_pipe_index(np, "tx"); + producer_id = of_get_dml_pipe_index(np, "rx"); + + if (producer_id < 0 || consumer_id < 0) + return -ENODEV; + + base = host->base + DML_OFFSET; + + /* Reset the DML block */ + writel_relaxed(1, base + DML_SW_RESET); + + /* Disable the producer and consumer CRCI */ + config = (PRODUCER_CRCI_DISABLE | CONSUMER_CRCI_DISABLE); + /* + * Disable the bypass mode. Bypass mode will only be used + * if data transfer is to happen in PIO mode and don't + * want the BAM interface to connect with SDCC-DML. + */ + config &= ~BYPASS; + /* + * Disable direct mode as we don't DML to MASTER the AHB bus. + * BAM connected with DML should MASTER the AHB bus. + */ + config &= ~DIRECT_MODE; + /* + * Disable infinite mode transfer as we won't be doing any + * infinite size data transfers. All data transfer will be + * of finite data size. + */ + config &= ~INFINITE_CONS_TRANS; + writel_relaxed(config, base + DML_CONFIG); + + /* + * Initialize the logical BAM pipe size for producer + * and consumer. + */ + writel_relaxed(PRODUCER_PIPE_LOGICAL_SIZE, + base + DML_PRODUCER_PIPE_LOGICAL_SIZE); + writel_relaxed(CONSUMER_PIPE_LOGICAL_SIZE, + base + DML_CONSUMER_PIPE_LOGICAL_SIZE); + + /* Initialize Producer/consumer pipe id */ + writel_relaxed(producer_id | (consumer_id << CONSUMER_PIPE_ID_SHFT), + base + DML_PIPE_ID); + + /* Make sure dml intialization is finished */ + mb(); + + return 0; +} diff --git a/drivers/mmc/host/mmci_qcom_dml.h b/drivers/mmc/host/mmci_qcom_dml.h new file mode 100644 index 000000000000..6e405d09d534 --- /dev/null +++ b/drivers/mmc/host/mmci_qcom_dml.h @@ -0,0 +1,31 @@ +/* + * + * Copyright (c) 2011, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#ifndef __MMC_QCOM_DML_H__ +#define __MMC_QCOM_DML_H__ + +#ifdef CONFIG_MMC_QCOM_DML +int dml_hw_init(struct mmci_host *host, struct device_node *np); +void dml_start_xfer(struct mmci_host *host, struct mmc_data *data); +#else +static inline int dml_hw_init(struct mmci_host *host, struct device_node *np) +{ + return -ENOSYS; +} +static inline void dml_start_xfer(struct mmci_host *host, struct mmc_data *data) +{ +} +#endif /* CONFIG_MMC_QCOM_DML */ + +#endif /* __MMC_QCOM_DML_H__ */ diff --git a/drivers/mmc/host/moxart-mmc.c b/drivers/mmc/host/moxart-mmc.c index b4b1efbf6c16..f3e18d08e852 100644 --- a/drivers/mmc/host/moxart-mmc.c +++ b/drivers/mmc/host/moxart-mmc.c @@ -717,7 +717,6 @@ static struct platform_driver moxart_mmc_driver = { .remove = moxart_remove, .driver = { .name = "mmc-moxart", - .owner = THIS_MODULE, .of_match_table = moxart_mmc_match, }, }; diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index ed1cb93c3784..ad111422ad55 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -1238,7 +1238,6 @@ static struct platform_driver mxcmci_driver = { .id_table = mxcmci_devtype, .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, .pm = &mxcmci_pm_ops, .of_match_table = mxcmci_of_match, } diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 140885a5a4e7..cd74e5143c36 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -735,7 +735,6 @@ static struct platform_driver mxs_mmc_driver = { .id_table = mxs_ssp_ids, .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, #ifdef CONFIG_PM .pm = &mxs_mmc_pm_ops, #endif diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 81974ecdfcbc..68dd6c79c378 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -1494,7 +1494,6 @@ static struct platform_driver mmc_omap_driver = { .remove = mmc_omap_remove, .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(mmc_omap_match), }, }; diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 965672663ef0..df27bb4fc098 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1829,7 +1829,17 @@ static int omap_hsmmc_disable_fclk(struct mmc_host *mmc) return 0; } -static const struct mmc_host_ops omap_hsmmc_ops = { +static int omap_hsmmc_multi_io_quirk(struct mmc_card *card, + unsigned int direction, int blk_size) +{ + /* This controller can't do multiblock reads due to hw bugs */ + if (direction == MMC_DATA_READ) + return 1; + + return blk_size; +} + +static struct mmc_host_ops omap_hsmmc_ops = { .enable = omap_hsmmc_enable_fclk, .disable = omap_hsmmc_disable_fclk, .post_req = omap_hsmmc_post_req, @@ -2101,7 +2111,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev) if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) { dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n"); - mmc->caps2 |= MMC_CAP2_NO_MULTI_READ; + omap_hsmmc_ops.multi_io_quirk = omap_hsmmc_multi_io_quirk; } pm_runtime_enable(host->dev); @@ -2489,7 +2499,6 @@ static struct platform_driver omap_hsmmc_driver = { .remove = omap_hsmmc_remove, .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, .pm = &omap_hsmmc_dev_pm_ops, .of_match_table = of_match_ptr(omap_mmc_of_match), }, diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index 32fe11323f39..1b6d0bfe35f5 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -474,7 +474,7 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) unsigned int clk = rate / ios->clock; if (host->clkrt == CLKRT_OFF) - clk_enable(host->clk); + clk_prepare_enable(host->clk); if (ios->clock == 26000000) { /* to support 26MHz */ @@ -501,7 +501,7 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) pxamci_stop_clock(host); if (host->clkrt != CLKRT_OFF) { host->clkrt = CLKRT_OFF; - clk_disable(host->clk); + clk_disable_unprepare(host->clk); } } @@ -885,7 +885,6 @@ static struct platform_driver pxamci_driver = { .remove = pxamci_remove, .driver = { .name = DRIVER_NAME, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(pxa_mmc_dt_ids), }, }; diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index dfde4a210238..c70b602f8f1e 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -412,6 +412,13 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host, } if (rsp_type == SD_RSP_TYPE_R2) { + /* + * The controller offloads the last byte {CRC-7, end bit 1'b1} + * of response type R2. Assign dummy CRC, 0, and end bit to the + * byte(ptr[16], goes into the LSB of resp[3] later). + */ + ptr[16] = 1; + for (i = 0; i < 4; i++) { cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4); dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n", @@ -1292,6 +1299,7 @@ static void realtek_init_host(struct realtek_pci_sdmmc *host) mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; + mmc->caps2 = MMC_CAP2_NO_PRESCAN_POWERUP | MMC_CAP2_FULL_PWR_CYCLE; mmc->max_current_330 = 400; mmc->max_current_180 = 800; mmc->ops = &realtek_pci_sdmmc_ops; @@ -1416,7 +1424,6 @@ static struct platform_driver rtsx_pci_sdmmc_driver = { .remove = rtsx_pci_sdmmc_drv_remove, .id_table = rtsx_pci_sdmmc_ids, .driver = { - .owner = THIS_MODULE, .name = DRV_NAME_RTSX_PCI_SDMMC, }, }; diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c index 5d3766e792f0..88af827e086b 100644 --- a/drivers/mmc/host/rtsx_usb_sdmmc.c +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c @@ -435,6 +435,13 @@ static void sd_send_cmd_get_rsp(struct rtsx_usb_sdmmc *host, } if (rsp_type == SD_RSP_TYPE_R2) { + /* + * The controller offloads the last byte {CRC-7, end bit 1'b1} + * of response type R2. Assign dummy CRC, 0, and end bit to the + * byte(ptr[16], goes into the LSB of resp[3] later). + */ + ptr[16] = 1; + for (i = 0; i < 4; i++) { cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4); dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n", @@ -1329,6 +1336,7 @@ static void rtsx_usb_init_host(struct rtsx_usb_sdmmc *host) MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST | MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 | MMC_CAP_NEEDS_POLL; + mmc->caps2 = MMC_CAP2_NO_PRESCAN_POWERUP | MMC_CAP2_FULL_PWR_CYCLE; mmc->max_current_330 = 400; mmc->max_current_180 = 800; @@ -1445,7 +1453,6 @@ static struct platform_driver rtsx_usb_sdmmc_driver = { .remove = rtsx_usb_sdmmc_drv_remove, .id_table = rtsx_usb_sdmmc_ids, .driver = { - .owner = THIS_MODULE, .name = "rtsx_usb_sdmmc", }, }; diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index e5516a226362..94cddf381ba3 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -985,7 +985,8 @@ static int s3cmci_setup_data(struct s3cmci_host *host, struct mmc_data *data) * one block being transferred. */ if (data->blocks > 1) { - pr_warning("%s: can't do non-word sized block transfers (blksz %d)\n", __func__, data->blksz); + pr_warn("%s: can't do non-word sized block transfers (blksz %d)\n", + __func__, data->blksz); return -EINVAL; } } @@ -1874,7 +1875,6 @@ MODULE_DEVICE_TABLE(platform, s3cmci_driver_ids); static struct platform_driver s3cmci_driver = { .driver = { .name = "s3c-sdi", - .owner = THIS_MODULE, }, .id_table = s3cmci_driver_ids, .probe = s3cmci_probe, diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 8c5337002c51..9cccc0e89b04 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -67,6 +67,8 @@ struct sdhci_acpi_slot { unsigned int caps2; mmc_pm_flag_t pm_caps; unsigned int flags; + int (*probe_slot)(struct platform_device *, const char *, const char *); + int (*remove_slot)(struct platform_device *); }; struct sdhci_acpi_host { @@ -122,13 +124,67 @@ static const struct sdhci_acpi_chip sdhci_acpi_chip_int = { .ops = &sdhci_acpi_ops_int, }; +static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev, + const char *hid, const char *uid) +{ + struct sdhci_acpi_host *c = platform_get_drvdata(pdev); + struct sdhci_host *host; + + if (!c || !c->host) + return 0; + + host = c->host; + + /* Platform specific code during emmc proble slot goes here */ + + if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") && + sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 && + sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807) + host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ + + return 0; +} + +static int sdhci_acpi_sdio_probe_slot(struct platform_device *pdev, + const char *hid, const char *uid) +{ + struct sdhci_acpi_host *c = platform_get_drvdata(pdev); + struct sdhci_host *host; + + if (!c || !c->host) + return 0; + + host = c->host; + + /* Platform specific code during emmc proble slot goes here */ + + return 0; +} + +static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev, + const char *hid, const char *uid) +{ + struct sdhci_acpi_host *c = platform_get_drvdata(pdev); + struct sdhci_host *host; + + if (!c || !c->host || !c->slot) + return 0; + + host = c->host; + + /* Platform specific code during emmc proble slot goes here */ + + return 0; +} + static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = { .chip = &sdhci_acpi_chip_int, .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR, .caps2 = MMC_CAP2_HC_ERASE_SZ, .flags = SDHCI_ACPI_RUNTIME_PM, - .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN, + .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | SDHCI_QUIRK2_STOP_WITH_TC, + .probe_slot = sdhci_acpi_emmc_probe_slot, }; static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { @@ -137,12 +193,15 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = { .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD, .flags = SDHCI_ACPI_RUNTIME_PM, .pm_caps = MMC_PM_KEEP_POWER, + .probe_slot = sdhci_acpi_sdio_probe_slot, }; static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = { .flags = SDHCI_ACPI_SD_CD | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL | SDHCI_ACPI_RUNTIME_PM, - .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON, + .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON | + SDHCI_QUIRK2_STOP_WITH_TC, + .probe_slot = sdhci_acpi_sd_probe_slot, }; struct sdhci_acpi_uid_slot { @@ -156,6 +215,7 @@ static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = { { "80860F14" , "3" , &sdhci_acpi_slot_int_sd }, { "80860F16" , NULL, &sdhci_acpi_slot_int_sd }, { "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio }, + { "INT33BB" , "3" , &sdhci_acpi_slot_int_sd }, { "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio }, { "INT3436" , NULL, &sdhci_acpi_slot_int_sdio }, { "PNP0D40" }, @@ -173,8 +233,8 @@ static const struct acpi_device_id sdhci_acpi_ids[] = { }; MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids); -static const struct sdhci_acpi_slot *sdhci_acpi_get_slot_by_ids(const char *hid, - const char *uid) +static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid, + const char *uid) { const struct sdhci_acpi_uid_slot *u; @@ -189,24 +249,6 @@ static const struct sdhci_acpi_slot *sdhci_acpi_get_slot_by_ids(const char *hid, return NULL; } -static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(acpi_handle handle, - const char *hid) -{ - const struct sdhci_acpi_slot *slot; - struct acpi_device_info *info; - const char *uid = NULL; - acpi_status status; - - status = acpi_get_object_info(handle, &info); - if (!ACPI_FAILURE(status) && (info->valid & ACPI_VALID_UID)) - uid = info->unique_id.string; - - slot = sdhci_acpi_get_slot_by_ids(hid, uid); - - kfree(info); - return slot; -} - static int sdhci_acpi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -217,6 +259,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) struct resource *iomem; resource_size_t len; const char *hid; + const char *uid; int err; if (acpi_bus_get_device(handle, &device)) @@ -226,6 +269,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) return -ENODEV; hid = acpi_device_hid(device); + uid = device->pnp.unique_id; iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!iomem) @@ -244,7 +288,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) c = sdhci_priv(host); c->host = host; - c->slot = sdhci_acpi_get_slot(handle, hid); + c->slot = sdhci_acpi_get_slot(hid, uid); c->pdev = pdev; c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM); @@ -277,6 +321,11 @@ static int sdhci_acpi_probe(struct platform_device *pdev) } if (c->slot) { + if (c->slot->probe_slot) { + err = c->slot->probe_slot(pdev, hid, uid); + if (err) + goto err_free; + } if (c->slot->chip) { host->ops = c->slot->chip->ops; host->quirks |= c->slot->chip->quirks; @@ -297,7 +346,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) { bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL); - if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0)) { + if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL)) { dev_warn(dev, "failed to setup card detect gpio\n"); c->use_runtime_pm = false; } @@ -334,6 +383,9 @@ static int sdhci_acpi_remove(struct platform_device *pdev) pm_runtime_put_noidle(dev); } + if (c->slot && c->slot->remove_slot) + c->slot->remove_slot(pdev); + dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0); sdhci_remove_host(c->host, dead); sdhci_free_host(c->host); @@ -385,20 +437,13 @@ static int sdhci_acpi_runtime_idle(struct device *dev) return 0; } -#else - -#define sdhci_acpi_runtime_suspend NULL -#define sdhci_acpi_runtime_resume NULL -#define sdhci_acpi_runtime_idle NULL - #endif static const struct dev_pm_ops sdhci_acpi_pm_ops = { .suspend = sdhci_acpi_suspend, .resume = sdhci_acpi_resume, - .runtime_suspend = sdhci_acpi_runtime_suspend, - .runtime_resume = sdhci_acpi_runtime_resume, - .runtime_idle = sdhci_acpi_runtime_idle, + SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend, + sdhci_acpi_runtime_resume, sdhci_acpi_runtime_idle) }; static struct platform_driver sdhci_acpi_driver = { diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c index dd780c315a63..e7e4fbdcbfe0 100644 --- a/drivers/mmc/host/sdhci-bcm-kona.c +++ b/drivers/mmc/host/sdhci-bcm-kona.c @@ -225,7 +225,7 @@ static struct sdhci_pltfm_data sdhci_pltfm_data_kona = { SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, }; -static struct __initconst of_device_id sdhci_bcm_kona_of_match[] = { +static const struct of_device_id sdhci_bcm_kona_of_match[] = { { .compatible = "brcm,kona-sdhci"}, { .compatible = "bcm,kona-sdhci"}, /* deprecated name */ {} @@ -359,7 +359,6 @@ static int sdhci_bcm_kona_remove(struct platform_device *pdev) static struct platform_driver sdhci_bcm_kona_driver = { .driver = { .name = "sdhci-kona", - .owner = THIS_MODULE, .pm = SDHCI_PLTFM_PMOPS, .of_match_table = sdhci_bcm_kona_of_match, }, diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c index 46af9a439d7b..439d259fdf1d 100644 --- a/drivers/mmc/host/sdhci-bcm2835.c +++ b/drivers/mmc/host/sdhci-bcm2835.c @@ -194,7 +194,6 @@ MODULE_DEVICE_TABLE(of, bcm2835_sdhci_of_match); static struct platform_driver bcm2835_sdhci_driver = { .driver = { .name = "sdhci-bcm2835", - .owner = THIS_MODULE, .of_match_table = bcm2835_sdhci_of_match, .pm = SDHCI_PLTFM_PMOPS, }, diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c index 14b74075589a..a7935a8d0922 100644 --- a/drivers/mmc/host/sdhci-cns3xxx.c +++ b/drivers/mmc/host/sdhci-cns3xxx.c @@ -106,7 +106,6 @@ static int sdhci_cns3xxx_remove(struct platform_device *pdev) static struct platform_driver sdhci_cns3xxx_driver = { .driver = { .name = "sdhci-cns3xxx", - .owner = THIS_MODULE, .pm = SDHCI_PLTFM_PMOPS, }, .probe = sdhci_cns3xxx_probe, diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c index e6278ec007d7..ca969d271a27 100644 --- a/drivers/mmc/host/sdhci-dove.c +++ b/drivers/mmc/host/sdhci-dove.c @@ -146,7 +146,6 @@ MODULE_DEVICE_TABLE(of, sdhci_dove_of_match_table); static struct platform_driver sdhci_dove_driver = { .driver = { .name = "sdhci-dove", - .owner = THIS_MODULE, .pm = SDHCI_PLTFM_PMOPS, .of_match_table = sdhci_dove_of_match_table, }, diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index ccec0e32590f..587ee0edeb57 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -880,6 +880,24 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask) sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); } +static unsigned int esdhc_get_max_timeout_count(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = pltfm_host->priv; + + return esdhc_is_usdhc(imx_data) ? 1 << 28 : 1 << 27; +} + +static void esdhc_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = pltfm_host->priv; + + /* use maximum timeout counter */ + sdhci_writeb(host, esdhc_is_usdhc(imx_data) ? 0xF : 0xE, + SDHCI_TIMEOUT_CONTROL); +} + static struct sdhci_ops sdhci_esdhc_ops = { .read_l = esdhc_readl_le, .read_w = esdhc_readw_le, @@ -889,7 +907,9 @@ static struct sdhci_ops sdhci_esdhc_ops = { .set_clock = esdhc_pltfm_set_clock, .get_max_clock = esdhc_pltfm_get_max_clock, .get_min_clock = esdhc_pltfm_get_min_clock, + .get_max_timeout_count = esdhc_get_max_timeout_count, .get_ro = esdhc_pltfm_get_ro, + .set_timeout = esdhc_set_timeout, .set_bus_width = esdhc_pltfm_set_bus_width, .set_uhs_signaling = esdhc_set_uhs_signaling, .reset = esdhc_reset, @@ -1207,7 +1227,6 @@ static const struct dev_pm_ops sdhci_esdhc_pmops = { static struct platform_driver sdhci_esdhc_imx_driver = { .driver = { .name = "sdhci-esdhc-imx", - .owner = THIS_MODULE, .of_match_table = imx_esdhc_dt_ids, .pm = &sdhci_esdhc_pmops, }, diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 1a6661ed6205..30804385af6d 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -46,24 +46,6 @@ #define CMUX_SHIFT_PHASE_SHIFT 24 #define CMUX_SHIFT_PHASE_MASK (7 << CMUX_SHIFT_PHASE_SHIFT) -static const u32 tuning_block_64[] = { - 0x00ff0fff, 0xccc3ccff, 0xffcc3cc3, 0xeffefffe, - 0xddffdfff, 0xfbfffbff, 0xff7fffbf, 0xefbdf777, - 0xf0fff0ff, 0x3cccfc0f, 0xcfcc33cc, 0xeeffefff, - 0xfdfffdff, 0xffbfffdf, 0xfff7ffbb, 0xde7b7ff7 -}; - -static const u32 tuning_block_128[] = { - 0xff00ffff, 0x0000ffff, 0xccccffff, 0xcccc33cc, - 0xcc3333cc, 0xffffcccc, 0xffffeeff, 0xffeeeeff, - 0xffddffff, 0xddddffff, 0xbbffffff, 0xbbffffff, - 0xffffffbb, 0xffffff77, 0x77ff7777, 0xffeeddbb, - 0x00ffffff, 0x00ffffff, 0xccffff00, 0xcc33cccc, - 0x3333cccc, 0xffcccccc, 0xffeeffff, 0xeeeeffff, - 0xddffffff, 0xddffffff, 0xffffffdd, 0xffffffbb, - 0xffffbbbb, 0xffff77ff, 0xff7777ff, 0xeeddbb77 -}; - struct sdhci_msm_host { struct platform_device *pdev; void __iomem *core_mem; /* MSM SDCC mapped address */ @@ -358,8 +340,8 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) { int tuning_seq_cnt = 3; u8 phase, *data_buf, tuned_phases[16], tuned_phase_cnt = 0; - const u32 *tuning_block_pattern = tuning_block_64; - int size = sizeof(tuning_block_64); /* Pattern size in bytes */ + const u8 *tuning_block_pattern = tuning_blk_pattern_4bit; + int size = sizeof(tuning_blk_pattern_4bit); int rc; struct mmc_host *mmc = host->mmc; struct mmc_ios ios = host->mmc->ios; @@ -375,8 +357,8 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) if ((opcode == MMC_SEND_TUNING_BLOCK_HS200) && (mmc->ios.bus_width == MMC_BUS_WIDTH_8)) { - tuning_block_pattern = tuning_block_128; - size = sizeof(tuning_block_128); + tuning_block_pattern = tuning_blk_pattern_8bit; + size = sizeof(tuning_blk_pattern_8bit); } data_buf = kmalloc(size, GFP_KERNEL); @@ -610,7 +592,6 @@ static struct platform_driver sdhci_msm_driver = { .remove = sdhci_msm_remove, .driver = { .name = "sdhci_msm", - .owner = THIS_MODULE, .of_match_table = sdhci_msm_dt_match, }, }; diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index 5bd1092310f2..981d66e5c023 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -213,7 +213,6 @@ MODULE_DEVICE_TABLE(of, sdhci_arasan_of_match); static struct platform_driver sdhci_arasan_driver = { .driver = { .name = "sdhci-arasan", - .owner = THIS_MODULE, .of_match_table = sdhci_arasan_of_match, .pm = &sdhci_arasan_dev_pm_ops, }, diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 8be4dcfb49a0..8872c85c63d4 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -388,7 +388,6 @@ MODULE_DEVICE_TABLE(of, sdhci_esdhc_of_match); static struct platform_driver sdhci_esdhc_driver = { .driver = { .name = "sdhci-esdhc", - .owner = THIS_MODULE, .of_match_table = sdhci_esdhc_of_match, .pm = ESDHC_PMOPS, }, diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c index b341661369a2..be479279a1d5 100644 --- a/drivers/mmc/host/sdhci-of-hlwd.c +++ b/drivers/mmc/host/sdhci-of-hlwd.c @@ -89,7 +89,6 @@ MODULE_DEVICE_TABLE(of, sdhci_hlwd_of_match); static struct platform_driver sdhci_hlwd_driver = { .driver = { .name = "sdhci-hlwd", - .owner = THIS_MODULE, .of_match_table = sdhci_hlwd_of_match, .pm = SDHCI_PLTFM_PMOPS, }, diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index c3a1debc9289..61192973e7cb 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -24,6 +24,7 @@ #include <linux/io.h> #include <linux/gpio.h> #include <linux/pm_runtime.h> +#include <linux/mmc/slot-gpio.h> #include <linux/mmc/sdhci-pci-data.h> #include "sdhci.h" @@ -271,6 +272,8 @@ static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR; slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ; slot->hw_reset = sdhci_pci_int_hw_reset; + if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC) + slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ return 0; } @@ -280,22 +283,35 @@ static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot) return 0; } +static int byt_sd_probe_slot(struct sdhci_pci_slot *slot) +{ + slot->cd_con_id = NULL; + slot->cd_idx = 0; + slot->cd_override_level = true; + return 0; +} + static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { .allow_runtime_pm = true, .probe_slot = byt_emmc_probe_slot, - .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN, + .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_STOP_WITH_TC, }; static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = { - .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, + .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON | + SDHCI_QUIRK2_PRESET_VALUE_BROKEN, .allow_runtime_pm = true, .probe_slot = byt_sdio_probe_slot, }; static const struct sdhci_pci_fixes sdhci_intel_byt_sd = { - .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON, + .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON | + SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_STOP_WITH_TC, .allow_runtime_pm = true, .own_cd_for_runtime_pm = true, + .probe_slot = byt_sd_probe_slot, }; /* Define Host controllers for Intel Merrifield platform */ @@ -317,7 +333,9 @@ static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot) static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, - .quirks2 = SDHCI_QUIRK2_BROKEN_HS200, + .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 | + SDHCI_QUIRK2_PRESET_VALUE_BROKEN, + .allow_runtime_pm = true, .probe_slot = intel_mrfl_mmc_probe_slot, }; @@ -876,6 +894,29 @@ static const struct pci_device_id pci_ids[] = { .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc, }, + { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_BSW_EMMC, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc, + }, + + { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_BSW_SDIO, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio, + }, + + { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_BSW_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd, + }, { .vendor = PCI_VENDOR_ID_INTEL, @@ -1269,20 +1310,13 @@ static int sdhci_pci_runtime_idle(struct device *dev) return 0; } -#else - -#define sdhci_pci_runtime_suspend NULL -#define sdhci_pci_runtime_resume NULL -#define sdhci_pci_runtime_idle NULL - #endif static const struct dev_pm_ops sdhci_pci_pm_ops = { .suspend = sdhci_pci_suspend, .resume = sdhci_pci_resume, - .runtime_suspend = sdhci_pci_runtime_suspend, - .runtime_resume = sdhci_pci_runtime_resume, - .runtime_idle = sdhci_pci_runtime_idle, + SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend, + sdhci_pci_runtime_resume, sdhci_pci_runtime_idle) }; /*****************************************************************************\ @@ -1332,6 +1366,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( slot->pci_bar = bar; slot->rst_n_gpio = -EINVAL; slot->cd_gpio = -EINVAL; + slot->cd_idx = -1; /* Retrieve platform data if there is any */ if (*sdhci_pci_get_data) @@ -1390,6 +1425,13 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( host->mmc->slotno = slotno; host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; + if (slot->cd_idx >= 0 && + mmc_gpiod_request_cd(host->mmc, slot->cd_con_id, slot->cd_idx, + slot->cd_override_level, 0, NULL)) { + dev_warn(&pdev->dev, "failed to setup card detect gpio\n"); + slot->cd_idx = -1; + } + ret = sdhci_add_host(host); if (ret) goto remove; @@ -1402,7 +1444,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure. */ if (chip->fixes && chip->fixes->own_cd_for_runtime_pm && - !gpio_is_valid(slot->cd_gpio)) + !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0) chip->allow_runtime_pm = false; return slot; diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h index c101477ef3be..d57c3d169914 100644 --- a/drivers/mmc/host/sdhci-pci.h +++ b/drivers/mmc/host/sdhci-pci.h @@ -11,6 +11,9 @@ #define PCI_DEVICE_ID_INTEL_BYT_SDIO 0x0f15 #define PCI_DEVICE_ID_INTEL_BYT_SD 0x0f16 #define PCI_DEVICE_ID_INTEL_BYT_EMMC2 0x0f50 +#define PCI_DEVICE_ID_INTEL_BSW_EMMC 0x2294 +#define PCI_DEVICE_ID_INTEL_BSW_SDIO 0x2295 +#define PCI_DEVICE_ID_INTEL_BSW_SD 0x2296 #define PCI_DEVICE_ID_INTEL_MRFL_MMC 0x1190 #define PCI_DEVICE_ID_INTEL_CLV_SDIO0 0x08f9 #define PCI_DEVICE_ID_INTEL_CLV_SDIO1 0x08fa @@ -61,6 +64,10 @@ struct sdhci_pci_slot { int cd_gpio; int cd_irq; + char *cd_con_id; + int cd_idx; + bool cd_override_level; + void (*hw_reset)(struct sdhci_host *host); }; diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index 7e834fb78f42..c5b01d6bb85d 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -123,7 +123,6 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev, size_t priv_size) { struct sdhci_host *host; - struct device_node *np = pdev->dev.of_node; struct resource *iomem; int ret; @@ -136,13 +135,8 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev, if (resource_size(iomem) < 0x100) dev_err(&pdev->dev, "Invalid iomem size!\n"); - /* Some PCI-based MFD need the parent here */ - if (pdev->dev.parent != &platform_bus && !np) - host = sdhci_alloc_host(pdev->dev.parent, - sizeof(struct sdhci_pltfm_host) + priv_size); - else - host = sdhci_alloc_host(&pdev->dev, - sizeof(struct sdhci_pltfm_host) + priv_size); + host = sdhci_alloc_host(&pdev->dev, + sizeof(struct sdhci_pltfm_host) + priv_size); if (IS_ERR(host)) { ret = PTR_ERR(host); diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 3c0f3c0a1cc8..b4c23e983baf 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -261,7 +261,6 @@ static int sdhci_pxav2_remove(struct platform_device *pdev) static struct platform_driver sdhci_pxav2_driver = { .driver = { .name = "sdhci-pxav2", - .owner = THIS_MODULE, #ifdef CONFIG_OF .of_match_table = sdhci_pxav2_of_match, #endif diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index 6f842fb8e6b8..5036d7d39529 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -224,12 +224,11 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) static const struct sdhci_ops pxav3_sdhci_ops = { .set_clock = sdhci_set_clock, - .set_uhs_signaling = pxav3_set_uhs_signaling, .platform_send_init_74_clocks = pxav3_gen_init_74_clocks, .get_max_clock = sdhci_pltfm_clk_get_max_clock, .set_bus_width = sdhci_set_bus_width, .reset = pxav3_reset, - .set_uhs_signaling = sdhci_set_uhs_signaling, + .set_uhs_signaling = pxav3_set_uhs_signaling, }; static struct sdhci_pltfm_data sdhci_pxav3_pdata = { @@ -381,11 +380,11 @@ static int sdhci_pxav3_probe(struct platform_device *pdev) return 0; -err_of_parse: -err_cd_req: err_add_host: pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); +err_of_parse: +err_cd_req: clk_disable_unprepare(clk); err_clk_get: err_mbus_win: @@ -492,7 +491,6 @@ static struct platform_driver sdhci_pxav3_driver = { #ifdef CONFIG_OF .of_match_table = sdhci_pxav3_of_match, #endif - .owner = THIS_MODULE, .pm = SDHCI_PXAV3_PMOPS, }, .probe = sdhci_pxav3_probe, diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index fa5954a05449..0ce6eb17deaf 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -606,8 +606,6 @@ static int sdhci_s3c_probe(struct platform_device *pdev) ret = sdhci_add_host(host); if (ret) { dev_err(dev, "sdhci_add_host() failed\n"); - pm_runtime_forbid(&pdev->dev); - pm_runtime_get_noresume(&pdev->dev); goto err_req_regs; } @@ -618,6 +616,8 @@ static int sdhci_s3c_probe(struct platform_device *pdev) return 0; err_req_regs: + pm_runtime_disable(&pdev->dev); + err_no_busclks: clk_disable_unprepare(sc->clk_io); @@ -747,7 +747,6 @@ static struct platform_driver sdhci_s3c_driver = { .remove = sdhci_s3c_remove, .id_table = sdhci_s3c_driver_ids, .driver = { - .owner = THIS_MODULE, .name = "s3c-sdhci", .of_match_table = of_match_ptr(sdhci_s3c_dt_match), .pm = SDHCI_S3C_PMOPS, diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c index 17004531d089..dd29d47c07aa 100644 --- a/drivers/mmc/host/sdhci-sirf.c +++ b/drivers/mmc/host/sdhci-sirf.c @@ -15,6 +15,8 @@ #include <linux/mmc/slot-gpio.h> #include "sdhci-pltfm.h" +#define SDHCI_SIRF_8BITBUS BIT(3) + struct sdhci_sirf_priv { struct clk *clk; int gpio_cd; @@ -27,10 +29,30 @@ static unsigned int sdhci_sirf_get_max_clk(struct sdhci_host *host) return clk_get_rate(priv->clk); } +static void sdhci_sirf_set_bus_width(struct sdhci_host *host, int width) +{ + u8 ctrl; + + ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); + ctrl &= ~(SDHCI_CTRL_4BITBUS | SDHCI_SIRF_8BITBUS); + + /* + * CSR atlas7 and prima2 SD host version is not 3.0 + * 8bit-width enable bit of CSR SD hosts is 3, + * while stardard hosts use bit 5 + */ + if (width == MMC_BUS_WIDTH_8) + ctrl |= SDHCI_SIRF_8BITBUS; + else if (width == MMC_BUS_WIDTH_4) + ctrl |= SDHCI_CTRL_4BITBUS; + + sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); +} + static struct sdhci_ops sdhci_sirf_ops = { .set_clock = sdhci_set_clock, .get_max_clock = sdhci_sirf_get_max_clk, - .set_bus_width = sdhci_set_bus_width, + .set_bus_width = sdhci_sirf_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, }; @@ -94,6 +116,7 @@ static int sdhci_sirf_probe(struct platform_device *pdev) ret); goto err_request_cd; } + mmc_gpiod_request_cd_irq(host->mmc); } return 0; @@ -167,7 +190,6 @@ MODULE_DEVICE_TABLE(of, sdhci_sirf_of_match); static struct platform_driver sdhci_sirf_driver = { .driver = { .name = "sdhci-sirf", - .owner = THIS_MODULE, .of_match_table = sdhci_sirf_of_match, #ifdef CONFIG_PM_SLEEP .pm = &sdhci_sirf_pm_ops, diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c index 9d535c7336ef..22e58268545f 100644 --- a/drivers/mmc/host/sdhci-spear.c +++ b/drivers/mmc/host/sdhci-spear.c @@ -230,7 +230,6 @@ MODULE_DEVICE_TABLE(of, sdhci_spear_id_table); static struct platform_driver sdhci_driver = { .driver = { .name = "sdhci", - .owner = THIS_MODULE, .pm = &sdhci_pm_ops, .of_match_table = of_match_ptr(sdhci_spear_id_table), }, diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 33100d10d176..59797106af93 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -318,7 +318,6 @@ static int sdhci_tegra_remove(struct platform_device *pdev) static struct platform_driver sdhci_tegra_driver = { .driver = { .name = "sdhci-tegra", - .owner = THIS_MODULE, .of_match_table = sdhci_tegra_dt_match, .pm = SDHCI_PLTFM_PMOPS, }, diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 37b2a9ae52ef..ada1a3ea3a87 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -707,19 +707,28 @@ static void sdhci_set_transfer_irqs(struct sdhci_host *host) sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); } -static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) +static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) { u8 count; + + if (host->ops->set_timeout) { + host->ops->set_timeout(host, cmd); + } else { + count = sdhci_calc_timeout(host, cmd); + sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); + } +} + +static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) +{ u8 ctrl; struct mmc_data *data = cmd->data; int ret; WARN_ON(host->data); - if (data || (cmd->flags & MMC_RSP_BUSY)) { - count = sdhci_calc_timeout(host, cmd); - sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); - } + if (data || (cmd->flags & MMC_RSP_BUSY)) + sdhci_set_timeout(host, cmd); if (!data) return; @@ -1007,6 +1016,7 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) mod_timer(&host->timer, timeout); host->cmd = cmd; + host->busy_handle = 0; sdhci_prepare_data(host, cmd); @@ -1194,7 +1204,6 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) clock_set: if (real_div) host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; - clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) << SDHCI_DIVIDER_HI_SHIFT; @@ -1357,11 +1366,12 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); /* * Check if the re-tuning timer has already expired and there - * is no on-going data transfer. If so, we need to execute - * tuning procedure before sending command. + * is no on-going data transfer and DAT0 is not busy. If so, + * we need to execute tuning procedure before sending command. */ if ((host->flags & SDHCI_NEEDS_RETUNING) && - !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { + !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ)) && + (present_state & SDHCI_DATA_0_LVL_MASK)) { if (mmc->card) { /* eMMC uses cmd21 but sd and sdio use cmd19 */ tuning_opcode = @@ -1471,6 +1481,18 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) if (!ios->clock || ios->clock != host->clock) { host->ops->set_clock(host, ios->clock); host->clock = ios->clock; + + if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK && + host->clock) { + host->timeout_clk = host->mmc->actual_clock ? + host->mmc->actual_clock / 1000 : + host->clock / 1000; + host->mmc->max_busy_timeout = + host->ops->get_max_timeout_count ? + host->ops->get_max_timeout_count(host) : + 1 << 27; + host->mmc->max_busy_timeout /= host->timeout_clk; + } } sdhci_set_power(host, ios->power_mode, ios->vdd); @@ -1733,8 +1755,8 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, ret = regulator_set_voltage(mmc->supply.vqmmc, 2700000, 3600000); if (ret) { - pr_warning("%s: Switching to 3.3V signalling voltage " - " failed\n", mmc_hostname(mmc)); + pr_warn("%s: Switching to 3.3V signalling voltage failed\n", + mmc_hostname(mmc)); return -EIO; } } @@ -1746,8 +1768,8 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, if (!(ctrl & SDHCI_CTRL_VDD_180)) return 0; - pr_warning("%s: 3.3V regulator output did not became stable\n", - mmc_hostname(mmc)); + pr_warn("%s: 3.3V regulator output did not became stable\n", + mmc_hostname(mmc)); return -EAGAIN; case MMC_SIGNAL_VOLTAGE_180: @@ -1755,8 +1777,8 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, ret = regulator_set_voltage(mmc->supply.vqmmc, 1700000, 1950000); if (ret) { - pr_warning("%s: Switching to 1.8V signalling voltage " - " failed\n", mmc_hostname(mmc)); + pr_warn("%s: Switching to 1.8V signalling voltage failed\n", + mmc_hostname(mmc)); return -EIO; } } @@ -1773,8 +1795,8 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, if (ctrl & SDHCI_CTRL_VDD_180) return 0; - pr_warning("%s: 1.8V regulator output did not became stable\n", - mmc_hostname(mmc)); + pr_warn("%s: 1.8V regulator output did not became stable\n", + mmc_hostname(mmc)); return -EAGAIN; case MMC_SIGNAL_VOLTAGE_120: @@ -1782,8 +1804,8 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host, ret = regulator_set_voltage(mmc->supply.vqmmc, 1100000, 1300000); if (ret) { - pr_warning("%s: Switching to 1.2V signalling voltage " - " failed\n", mmc_hostname(mmc)); + pr_warn("%s: Switching to 1.2V signalling voltage failed\n", + mmc_hostname(mmc)); return -EIO; } } @@ -2203,7 +2225,7 @@ static void sdhci_tuning_timer(unsigned long data) * * \*****************************************************************************/ -static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) +static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask) { BUG_ON(intmask == 0); @@ -2241,11 +2263,18 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) if (host->cmd->data) DBG("Cannot wait for busy signal when also " "doing a data transfer"); - else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ)) + else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) + && !host->busy_handle) { + /* Mark that command complete before busy is ended */ + host->busy_handle = 1; return; + } /* The controller does not support the end-of-busy IRQ, * fall through and take the SDHCI_INT_RESPONSE */ + } else if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) && + host->cmd->opcode == MMC_STOP_TRANSMISSION && !host->data) { + *mask &= ~SDHCI_INT_DATA_END; } if (intmask & SDHCI_INT_RESPONSE) @@ -2304,8 +2333,21 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) * above in sdhci_cmd_irq(). */ if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { + if (intmask & SDHCI_INT_DATA_TIMEOUT) { + host->cmd->error = -ETIMEDOUT; + tasklet_schedule(&host->finish_tasklet); + return; + } if (intmask & SDHCI_INT_DATA_END) { - sdhci_finish_command(host); + /* + * Some cards handle busy-end interrupt + * before the command completed, so make + * sure we do things in the proper order. + */ + if (host->busy_handle) + sdhci_finish_command(host); + else + host->busy_handle = 1; return; } } @@ -2442,7 +2484,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) } if (intmask & SDHCI_INT_CMD_MASK) - sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK); + sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK, + &intmask); if (intmask & SDHCI_INT_DATA_MASK) sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK); @@ -2534,7 +2577,7 @@ void sdhci_enable_irq_wakeups(struct sdhci_host *host) } EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups); -void sdhci_disable_irq_wakeups(struct sdhci_host *host) +static void sdhci_disable_irq_wakeups(struct sdhci_host *host) { u8 val; u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE @@ -2544,7 +2587,6 @@ void sdhci_disable_irq_wakeups(struct sdhci_host *host) val &= ~mask; sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL); } -EXPORT_SYMBOL_GPL(sdhci_disable_irq_wakeups); int sdhci_suspend_host(struct sdhci_host *host) { @@ -2749,6 +2791,7 @@ int sdhci_add_host(struct sdhci_host *host) u32 caps[2] = {0, 0}; u32 max_current_caps; unsigned int ocr_avail; + unsigned int override_timeout_clk; int ret; WARN_ON(host == NULL); @@ -2762,6 +2805,8 @@ int sdhci_add_host(struct sdhci_host *host) if (debug_quirks2) host->quirks2 = debug_quirks2; + override_timeout_clk = host->timeout_clk; + sdhci_do_reset(host, SDHCI_RESET_ALL); host->version = sdhci_readw(host, SDHCI_HOST_VERSION); @@ -2807,8 +2852,7 @@ int sdhci_add_host(struct sdhci_host *host) if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { if (host->ops->enable_dma) { if (host->ops->enable_dma(host)) { - pr_warning("%s: No suitable DMA " - "available. Falling back to PIO.\n", + pr_warn("%s: No suitable DMA available - falling back to PIO\n", mmc_hostname(mmc)); host->flags &= ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA); @@ -2830,15 +2874,14 @@ int sdhci_add_host(struct sdhci_host *host) dma_free_coherent(mmc_dev(mmc), ADMA_SIZE, host->adma_desc, host->adma_addr); kfree(host->align_buffer); - pr_warning("%s: Unable to allocate ADMA " - "buffers. Falling back to standard DMA.\n", + pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n", mmc_hostname(mmc)); host->flags &= ~SDHCI_USE_ADMA; host->adma_desc = NULL; host->align_buffer = NULL; } else if (host->adma_addr & 3) { - pr_warning("%s: unable to allocate aligned ADMA descriptor\n", - mmc_hostname(mmc)); + pr_warn("%s: unable to allocate aligned ADMA descriptor\n", + mmc_hostname(mmc)); host->flags &= ~SDHCI_USE_ADMA; dma_free_coherent(mmc_dev(mmc), ADMA_SIZE, host->adma_desc, host->adma_addr); @@ -2908,25 +2951,30 @@ int sdhci_add_host(struct sdhci_host *host) } else mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200; - host->timeout_clk = - (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; - if (host->timeout_clk == 0) { - if (host->ops->get_timeout_clock) { - host->timeout_clk = host->ops->get_timeout_clock(host); - } else if (!(host->quirks & - SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { - pr_err("%s: Hardware doesn't specify timeout clock " - "frequency.\n", mmc_hostname(mmc)); - return -ENODEV; + if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) { + host->timeout_clk = (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> + SDHCI_TIMEOUT_CLK_SHIFT; + if (host->timeout_clk == 0) { + if (host->ops->get_timeout_clock) { + host->timeout_clk = + host->ops->get_timeout_clock(host); + } else { + pr_err("%s: Hardware doesn't specify timeout clock frequency.\n", + mmc_hostname(mmc)); + return -ENODEV; + } } - } - if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) - host->timeout_clk *= 1000; - if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) - host->timeout_clk = mmc->f_max / 1000; + if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) + host->timeout_clk *= 1000; - mmc->max_busy_timeout = (1 << 27) / host->timeout_clk; + mmc->max_busy_timeout = host->ops->get_max_timeout_count ? + host->ops->get_max_timeout_count(host) : 1 << 27; + mmc->max_busy_timeout /= host->timeout_clk; + } + + if (override_timeout_clk) + host->timeout_clk = override_timeout_clk; mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_ERASE | MMC_CAP_CMD23; mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD; @@ -2998,8 +3046,13 @@ int sdhci_add_host(struct sdhci_host *host) /* SD3.0: SDR104 is supported so (for eMMC) the caps2 * field can be promoted to support HS200. */ - if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200)) + if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200)) { mmc->caps2 |= MMC_CAP2_HS200; + if (IS_ERR(mmc->supply.vqmmc) || + !regulator_is_supported_voltage + (mmc->supply.vqmmc, 1100000, 1300000)) + mmc->caps2 &= ~MMC_CAP2_HS200_1_2V_SDR; + } } else if (caps[1] & SDHCI_SUPPORT_SDR50) mmc->caps |= MMC_CAP_UHS_SDR50; @@ -3049,7 +3102,7 @@ int sdhci_add_host(struct sdhci_host *host) */ max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT); if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) { - u32 curr = regulator_get_current_limit(mmc->supply.vmmc); + int curr = regulator_get_current_limit(mmc->supply.vmmc); if (curr > 0) { /* convert to SDHCI_MAX_CURRENT format */ @@ -3158,8 +3211,8 @@ int sdhci_add_host(struct sdhci_host *host) mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT; if (mmc->max_blk_size >= 3) { - pr_warning("%s: Invalid maximum block size, " - "assuming 512 bytes\n", mmc_hostname(mmc)); + pr_warn("%s: Invalid maximum block size, assuming 512 bytes\n", + mmc_hostname(mmc)); mmc->max_blk_size = 0; } } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 4a5cd5e3fa3e..31896a779d4e 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -72,6 +72,7 @@ #define SDHCI_WRITE_PROTECT 0x00080000 #define SDHCI_DATA_LVL_MASK 0x00F00000 #define SDHCI_DATA_LVL_SHIFT 20 +#define SDHCI_DATA_0_LVL_MASK 0x00100000 #define SDHCI_HOST_CONTROL 0x28 #define SDHCI_CTRL_LED 0x01 @@ -281,6 +282,9 @@ struct sdhci_ops { unsigned int (*get_max_clock)(struct sdhci_host *host); unsigned int (*get_min_clock)(struct sdhci_host *host); unsigned int (*get_timeout_clock)(struct sdhci_host *host); + unsigned int (*get_max_timeout_count)(struct sdhci_host *host); + void (*set_timeout)(struct sdhci_host *host, + struct mmc_command *cmd); void (*set_bus_width)(struct sdhci_host *host, int width); void (*platform_send_init_74_clocks)(struct sdhci_host *host, u8 power_mode); diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index d11708c815d7..7d9d6a321521 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -1553,7 +1553,6 @@ static struct platform_driver sh_mmcif_driver = { .driver = { .name = DRIVER_NAME, .pm = &sh_mmcif_dev_pm_ops, - .owner = THIS_MODULE, .of_match_table = mmcif_of_match, }, }; diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 91058dabd11a..a2e81a1ea6af 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -39,6 +39,7 @@ struct sh_mobile_sdhi_of_data { unsigned long tmio_flags; unsigned long capabilities; unsigned long capabilities2; + dma_addr_t dma_rx_offset; }; static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = { @@ -48,14 +49,16 @@ static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = { }; static const struct sh_mobile_sdhi_of_data of_rcar_gen1_compatible = { - .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE, + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | + TMIO_MMC_CLK_ACTUAL, .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, }; static const struct sh_mobile_sdhi_of_data of_rcar_gen2_compatible = { - .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE, + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | + TMIO_MMC_CLK_ACTUAL, .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, - .capabilities2 = MMC_CAP2_NO_MULTI_READ, + .dma_rx_offset = 0x2000, }; static const struct of_device_id sh_mobile_sdhi_of_match[] = { @@ -68,6 +71,9 @@ static const struct of_device_id sh_mobile_sdhi_of_match[] = { { .compatible = "renesas,sdhi-r8a7779", .data = &of_rcar_gen1_compatible, }, { .compatible = "renesas,sdhi-r8a7790", .data = &of_rcar_gen2_compatible, }, { .compatible = "renesas,sdhi-r8a7791", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7792", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7793", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7794", .data = &of_rcar_gen2_compatible, }, {}, }; MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); @@ -132,6 +138,24 @@ static int sh_mobile_sdhi_write16_hook(struct tmio_mmc_host *host, int addr) return 0; } +static int sh_mobile_sdhi_multi_io_quirk(struct mmc_card *card, + unsigned int direction, int blk_size) +{ + /* + * In Renesas controllers, when performing a + * multiple block read of one or two blocks, + * depending on the timing with which the + * response register is read, the response + * value may not be read properly. + * Use single block read for this HW bug + */ + if ((direction == MMC_DATA_READ) && + blk_size == 2) + return 1; + + return blk_size; +} + static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev) { mmc_detect_change(platform_get_drvdata(pdev), msecs_to_jiffies(100)); @@ -187,6 +211,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data->clk_disable = sh_mobile_sdhi_clk_disable; mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED; mmc_data->write16_hook = sh_mobile_sdhi_write16_hook; + mmc_data->multi_io_quirk = sh_mobile_sdhi_multi_io_quirk; if (p) { mmc_data->flags = p->tmio_flags; mmc_data->ocr_mask = p->tmio_ocr_mask; @@ -223,11 +248,27 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) */ mmc_data->flags |= TMIO_MMC_SDIO_IRQ; + /* + * All SDHI have CMD12 controll bit + */ + mmc_data->flags |= TMIO_MMC_HAVE_CMD12_CTRL; + + /* + * All SDHI need SDIO_INFO1 reserved bit + */ + mmc_data->flags |= TMIO_MMC_SDIO_STATUS_QUIRK; + + /* + * All SDHI have DMA control register + */ + mmc_data->flags |= TMIO_MMC_HAVE_CTL_DMA_REG; + if (of_id && of_id->data) { const struct sh_mobile_sdhi_of_data *of_data = of_id->data; mmc_data->flags |= of_data->tmio_flags; mmc_data->capabilities |= of_data->capabilities; mmc_data->capabilities2 |= of_data->capabilities2; + dma_priv->dma_rx_offset = of_data->dma_rx_offset; } /* SD control register space size is 0x100, 0x200 for bus_shift=1 */ @@ -332,8 +373,9 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev) } static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(tmio_mmc_host_suspend, tmio_mmc_host_resume) - SET_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend, + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_PM_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend, tmio_mmc_host_runtime_resume, NULL) }; @@ -341,7 +383,6 @@ static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { static struct platform_driver sh_mobile_sdhi_driver = { .driver = { .name = "sh_mobile_sdhi", - .owner = THIS_MODULE, .pm = &tmio_mmc_dev_pm_ops, .of_match_table = sh_mobile_sdhi_of_match, }, diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index 024f67c98cdc..d1663b3c4143 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -990,7 +990,8 @@ static int sunxi_mmc_probe(struct platform_device *pdev) /* 400kHz ~ 50MHz */ mmc->f_min = 400000; mmc->f_max = 50000000; - mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; + mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED | + MMC_CAP_ERASE; ret = mmc_of_parse(mmc); if (ret) @@ -1035,7 +1036,6 @@ static int sunxi_mmc_remove(struct platform_device *pdev) static struct platform_driver sunxi_mmc_driver = { .driver = { .name = "sunxi-mmc", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(sunxi_mmc_of_match), }, .probe = sunxi_mmc_probe, diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c index d1760ebcac03..93c4b40df90a 100644 --- a/drivers/mmc/host/tifm_sd.c +++ b/drivers/mmc/host/tifm_sd.c @@ -952,8 +952,8 @@ static int tifm_sd_probe(struct tifm_dev *sock) if (!(TIFM_SOCK_STATE_OCCUPIED & readl(sock->addr + SOCK_PRESENT_STATE))) { - pr_warning("%s : card gone, unexpectedly\n", - dev_name(&sock->dev)); + pr_warn("%s : card gone, unexpectedly\n", + dev_name(&sock->dev)); return rc; } diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index cfad844730d8..659028ddb8b1 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -30,7 +30,7 @@ static int tmio_mmc_suspend(struct device *dev) const struct mfd_cell *cell = mfd_get_cell(pdev); int ret; - ret = tmio_mmc_host_suspend(dev); + ret = pm_runtime_force_suspend(dev); /* Tell MFD core it can disable us now.*/ if (!ret && cell->disable) @@ -50,7 +50,7 @@ static int tmio_mmc_resume(struct device *dev) ret = cell->resume(pdev); if (!ret) - ret = tmio_mmc_host_resume(dev); + ret = pm_runtime_force_resume(dev); return ret; } @@ -135,6 +135,9 @@ static int tmio_mmc_remove(struct platform_device *pdev) static const struct dev_pm_ops tmio_mmc_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(tmio_mmc_suspend, tmio_mmc_resume) + SET_PM_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend, + tmio_mmc_host_runtime_resume, + NULL) }; static struct platform_driver tmio_mmc_driver = { diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index 100ffe0b2faf..a34ecbe1c1ad 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -40,22 +40,6 @@ struct tmio_mmc_data; -/* - * We differentiate between the following 3 power states: - * 1. card slot powered off, controller stopped. This is used, when either there - * is no card in the slot, or the card really has to be powered down. - * 2. card slot powered on, controller stopped. This is used, when a card is in - * the slot, but no activity is currently taking place. This is a power- - * saving mode with card-state preserved. This state can be entered, e.g. - * when MMC clock-gating is used. - * 3. card slot powered on, controller running. This is the actual active state. - */ -enum tmio_mmc_power { - TMIO_MMC_OFF_STOP, /* card power off, controller stopped */ - TMIO_MMC_ON_STOP, /* card power on, controller stopped */ - TMIO_MMC_ON_RUN, /* card power on, controller running */ -}; - struct tmio_mmc_host { void __iomem *ctl; struct mmc_command *cmd; @@ -63,9 +47,6 @@ struct tmio_mmc_host { struct mmc_data *data; struct mmc_host *mmc; - /* Controller and card power state */ - enum tmio_mmc_power power; - /* Callbacks for clock / power control */ void (*set_pwr)(struct platform_device *host, int state); void (*set_clk_div)(struct platform_device *host, int state); @@ -92,15 +73,16 @@ struct tmio_mmc_host { struct delayed_work delayed_reset_work; struct work_struct done; - /* Cache IRQ mask */ + /* Cache */ u32 sdcard_irq_mask; u32 sdio_irq_mask; + unsigned int clk_cache; spinlock_t lock; /* protect host private data */ unsigned long last_req_ts; struct mutex ios_lock; /* protect set_ios() context */ bool native_hotplug; - bool resuming; + bool sdio_irq_enabled; }; int tmio_mmc_host_probe(struct tmio_mmc_host **host, @@ -162,12 +144,7 @@ static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host) } #endif -#ifdef CONFIG_PM_SLEEP -int tmio_mmc_host_suspend(struct device *dev); -int tmio_mmc_host_resume(struct device *dev); -#endif - -#ifdef CONFIG_PM_RUNTIME +#ifdef CONFIG_PM int tmio_mmc_host_runtime_suspend(struct device *dev); int tmio_mmc_host_runtime_resume(struct device *dev); #endif diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index eb8f1d5c34b1..7d077388b9eb 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -28,10 +28,8 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) if (!host->chan_tx || !host->chan_rx) return; -#if defined(CONFIG_SUPERH) || defined(CONFIG_ARCH_SHMOBILE) - /* Switch DMA mode on or off - SuperH specific? */ - sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0); -#endif + if (host->pdata->flags & TMIO_MMC_HAVE_CTL_DMA_REG) + sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0); } void tmio_mmc_abort_dma(struct tmio_mmc_host *host) @@ -312,7 +310,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat if (pdata->dma->chan_priv_rx) cfg.slave_id = pdata->dma->slave_id_rx; cfg.direction = DMA_DEV_TO_MEM; - cfg.src_addr = cfg.dst_addr; + cfg.src_addr = cfg.dst_addr + pdata->dma->dma_rx_offset; cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.dst_addr = 0; ret = dmaengine_slave_config(host->chan_rx, &cfg); diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index faf0924e71cb..250bf8c9f998 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -44,6 +44,7 @@ #include <linux/pm_qos.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> +#include <linux/mmc/sdio.h> #include <linux/scatterlist.h> #include <linux/spinlock.h> #include <linux/workqueue.h> @@ -129,19 +130,28 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct tmio_mmc_host *host = mmc_priv(mmc); - if (enable) { + if (enable && !host->sdio_irq_enabled) { + /* Keep device active while SDIO irq is enabled */ + pm_runtime_get_sync(mmc_dev(mmc)); + host->sdio_irq_enabled = true; + host->sdio_irq_mask = TMIO_SDIO_MASK_ALL & ~TMIO_SDIO_STAT_IOIRQ; sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001); sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); - } else { + } else if (!enable && host->sdio_irq_enabled) { host->sdio_irq_mask = TMIO_SDIO_MASK_ALL; sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000); + + host->sdio_irq_enabled = false; + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } } -static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock) +static void tmio_mmc_set_clock(struct tmio_mmc_host *host, + unsigned int new_clock) { u32 clk = 0, clock; @@ -149,7 +159,11 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock) for (clock = host->mmc->f_min, clk = 0x80000080; new_clock >= (clock<<1); clk >>= 1) clock <<= 1; - clk |= 0x100; + + /* 1/1 clock is option */ + if ((host->pdata->flags & TMIO_MMC_CLK_ACTUAL) && + ((clk >> 22) & 0x1)) + clk |= 0xff; } if (host->set_clk_div) @@ -245,6 +259,9 @@ static void tmio_mmc_reset_work(struct work_struct *work) tmio_mmc_abort_dma(host); mmc_request_done(host->mmc, mrq); + + pm_runtime_mark_last_busy(mmc_dev(host->mmc)); + pm_runtime_put_autosuspend(mmc_dev(host->mmc)); } /* called with host->lock held, interrupts disabled */ @@ -274,6 +291,9 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host) tmio_mmc_abort_dma(host); mmc_request_done(host->mmc, mrq); + + pm_runtime_mark_last_busy(mmc_dev(host->mmc)); + pm_runtime_put_autosuspend(mmc_dev(host->mmc)); } static void tmio_mmc_done_work(struct work_struct *work) @@ -295,6 +315,7 @@ static void tmio_mmc_done_work(struct work_struct *work) #define TRANSFER_READ 0x1000 #define TRANSFER_MULTI 0x2000 #define SECURITY_CMD 0x4000 +#define NO_CMD12_ISSUE 0x4000 /* TMIO_MMC_HAVE_CMD12_CTRL */ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command *cmd) { @@ -331,6 +352,14 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command if (data->blocks > 1) { sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x100); c |= TRANSFER_MULTI; + + /* + * Disable auto CMD12 at IO_RW_EXTENDED when + * multiple block transfer + */ + if ((host->pdata->flags & TMIO_MMC_HAVE_CMD12_CTRL) && + (cmd->opcode == SD_IO_RW_EXTENDED)) + c |= NO_CMD12_ISSUE; } if (data->flags & MMC_DATA_READ) c |= TRANSFER_READ; @@ -347,6 +376,40 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command return 0; } +static void tmio_mmc_transfer_data(struct tmio_mmc_host *host, + unsigned short *buf, + unsigned int count) +{ + int is_read = host->data->flags & MMC_DATA_READ; + u8 *buf8; + + /* + * Transfer the data + */ + if (is_read) + sd_ctrl_read16_rep(host, CTL_SD_DATA_PORT, buf, count >> 1); + else + sd_ctrl_write16_rep(host, CTL_SD_DATA_PORT, buf, count >> 1); + + /* if count was even number */ + if (!(count & 0x1)) + return; + + /* if count was odd number */ + buf8 = (u8 *)(buf + (count >> 1)); + + /* + * FIXME + * + * driver and this function are assuming that + * it is used as little endian + */ + if (is_read) + *buf8 = sd_ctrl_read16(host, CTL_SD_DATA_PORT) & 0xff; + else + sd_ctrl_write16(host, CTL_SD_DATA_PORT, *buf8); +} + /* * This chip always returns (at least?) as much data as you ask for. * I'm unsure what happens if you ask for less than a block. This should be @@ -379,10 +442,7 @@ static void tmio_mmc_pio_irq(struct tmio_mmc_host *host) count, host->sg_off, data->flags); /* Transfer the data */ - if (data->flags & MMC_DATA_READ) - sd_ctrl_read16_rep(host, CTL_SD_DATA_PORT, buf, count >> 1); - else - sd_ctrl_write16_rep(host, CTL_SD_DATA_PORT, buf, count >> 1); + tmio_mmc_transfer_data(host, buf, count); host->sg_off += count; @@ -465,6 +525,9 @@ static void tmio_mmc_data_irq(struct tmio_mmc_host *host) goto out; if (host->chan_tx && (data->flags & MMC_DATA_WRITE) && !host->force_pio) { + u32 status = sd_ctrl_read32(host, CTL_STATUS); + bool done = false; + /* * Has all data been written out yet? Testing on SuperH showed, * that in most cases the first interrupt comes already with the @@ -473,7 +536,15 @@ static void tmio_mmc_data_irq(struct tmio_mmc_host *host) * DATAEND interrupt with the BUSY bit set, in this cases * waiting for one more interrupt fixes the problem. */ - if (!(sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_CMD_BUSY)) { + if (host->pdata->flags & TMIO_MMC_HAS_IDLE_WAIT) { + if (status & TMIO_STAT_ILL_FUNC) + done = true; + } else { + if (!(status & TMIO_STAT_CMD_BUSY)) + done = true; + } + + if (done) { tmio_mmc_disable_mmc_irqs(host, TMIO_STAT_DATAEND); tasklet_schedule(&host->dma_complete); } @@ -557,6 +628,9 @@ static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host, pr_debug_status(*status); pr_debug_status(*ireg); + + /* Clear the status except the interrupt status */ + sd_ctrl_write32(host, CTL_STATUS, TMIO_MASK_IRQ); } static bool __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host, @@ -637,6 +711,7 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) struct mmc_host *mmc = host->mmc; struct tmio_mmc_data *pdata = host->pdata; unsigned int ireg, status; + unsigned int sdio_status; if (!(pdata->flags & TMIO_MMC_SDIO_IRQ)) return IRQ_HANDLED; @@ -644,7 +719,11 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid) status = sd_ctrl_read16(host, CTL_SDIO_STATUS); ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask; - sd_ctrl_write16(host, CTL_SDIO_STATUS, status & ~TMIO_SDIO_MASK_ALL); + sdio_status = status & ~TMIO_SDIO_MASK_ALL; + if (pdata->flags & TMIO_MMC_SDIO_STATUS_QUIRK) + sdio_status |= 6; + + sd_ctrl_write16(host, CTL_SDIO_STATUS, sdio_status); if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ) mmc_signal_sdio_irq(mmc); @@ -728,6 +807,8 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) spin_unlock_irqrestore(&host->lock, flags); + pm_runtime_get_sync(mmc_dev(mmc)); + if (mrq->data) { ret = tmio_mmc_start_data(host, mrq->data); if (ret) @@ -746,11 +827,14 @@ fail: host->mrq = NULL; mrq->cmd->error = ret; mmc_request_done(mmc, mrq); + + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } -static int tmio_mmc_clk_update(struct mmc_host *mmc) +static int tmio_mmc_clk_update(struct tmio_mmc_host *host) { - struct tmio_mmc_host *host = mmc_priv(mmc); + struct mmc_host *mmc = host->mmc; struct tmio_mmc_data *pdata = host->pdata; int ret; @@ -812,6 +896,19 @@ static void tmio_mmc_power_off(struct tmio_mmc_host *host) host->set_pwr(host->pdev, 0); } +static void tmio_mmc_set_bus_width(struct tmio_mmc_host *host, + unsigned char bus_width) +{ + switch (bus_width) { + case MMC_BUS_WIDTH_1: + sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0); + break; + case MMC_BUS_WIDTH_4: + sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0); + break; + } +} + /* Set MMC clock / power. * Note: This controller uses a simple divider scheme therefore it cannot * run a MMC card at full speed (20MHz). The max clock is 24MHz on SD, but as @@ -824,6 +921,8 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct device *dev = &host->pdev->dev; unsigned long flags; + pm_runtime_get_sync(mmc_dev(mmc)); + mutex_lock(&host->ios_lock); spin_lock_irqsave(&host->lock, flags); @@ -850,60 +949,22 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_unlock_irqrestore(&host->lock, flags); - /* - * host->power toggles between false and true in both cases - either - * or not the controller can be runtime-suspended during inactivity. - * But if the controller has to be kept on, the runtime-pm usage_count - * is kept positive, so no suspending actually takes place. - */ - if (ios->power_mode == MMC_POWER_ON && ios->clock) { - if (host->power != TMIO_MMC_ON_RUN) { - tmio_mmc_clk_update(mmc); - pm_runtime_get_sync(dev); - if (host->resuming) { - tmio_mmc_reset(host); - host->resuming = false; - } - } - if (host->power == TMIO_MMC_OFF_STOP) - tmio_mmc_reset(host); + switch (ios->power_mode) { + case MMC_POWER_OFF: + tmio_mmc_power_off(host); + tmio_mmc_clk_stop(host); + break; + case MMC_POWER_UP: tmio_mmc_set_clock(host, ios->clock); - if (host->power == TMIO_MMC_OFF_STOP) - /* power up SD card and the bus */ - tmio_mmc_power_on(host, ios->vdd); - host->power = TMIO_MMC_ON_RUN; - /* start bus clock */ + tmio_mmc_power_on(host, ios->vdd); tmio_mmc_clk_start(host); - } else if (ios->power_mode != MMC_POWER_UP) { - struct tmio_mmc_data *pdata = host->pdata; - unsigned int old_power = host->power; - - if (old_power != TMIO_MMC_OFF_STOP) { - if (ios->power_mode == MMC_POWER_OFF) { - tmio_mmc_power_off(host); - host->power = TMIO_MMC_OFF_STOP; - } else { - host->power = TMIO_MMC_ON_STOP; - } - } - - if (old_power == TMIO_MMC_ON_RUN) { - tmio_mmc_clk_stop(host); - pm_runtime_put(dev); - if (pdata->clk_disable) - pdata->clk_disable(host->pdev); - } - } - - if (host->power != TMIO_MMC_OFF_STOP) { - switch (ios->bus_width) { - case MMC_BUS_WIDTH_1: - sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0); + tmio_mmc_set_bus_width(host, ios->bus_width); break; - case MMC_BUS_WIDTH_4: - sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0); + case MMC_POWER_ON: + tmio_mmc_set_clock(host, ios->clock); + tmio_mmc_clk_start(host); + tmio_mmc_set_bus_width(host, ios->bus_width); break; - } } /* Let things settle. delay taken from winCE driver */ @@ -915,7 +976,12 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) ios->clock, ios->power_mode); host->mrq = NULL; + host->clk_cache = ios->clock; + mutex_unlock(&host->ios_lock); + + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } static int tmio_mmc_get_ro(struct mmc_host *mmc) @@ -926,8 +992,25 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc) if (ret >= 0) return ret; - return !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) || - (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)); + pm_runtime_get_sync(mmc_dev(mmc)); + ret = !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) || + (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)); + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); + + return ret; +} + +static int tmio_multi_io_quirk(struct mmc_card *card, + unsigned int direction, int blk_size) +{ + struct tmio_mmc_host *host = mmc_priv(card->host); + struct tmio_mmc_data *pdata = host->pdata; + + if (pdata->multi_io_quirk) + return pdata->multi_io_quirk(card, direction, blk_size); + + return blk_size; } static const struct mmc_host_ops tmio_mmc_ops = { @@ -936,6 +1019,7 @@ static const struct mmc_host_ops tmio_mmc_ops = { .get_ro = tmio_mmc_get_ro, .get_cd = mmc_gpio_get_cd, .enable_sdio_irq = tmio_mmc_enable_sdio_irq, + .multi_io_quirk = tmio_multi_io_quirk, }; static int tmio_mmc_init_ocr(struct tmio_mmc_host *host) @@ -1032,28 +1116,23 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, mmc->caps & MMC_CAP_NONREMOVABLE || mmc->slot.cd_irq >= 0); - _host->power = TMIO_MMC_OFF_STOP; - pm_runtime_enable(&pdev->dev); - ret = pm_runtime_resume(&pdev->dev); - if (ret < 0) - goto pm_disable; - - if (tmio_mmc_clk_update(mmc) < 0) { + if (tmio_mmc_clk_update(_host) < 0) { mmc->f_max = pdata->hclk; mmc->f_min = mmc->f_max / 512; } /* - * There are 4 different scenarios for the card detection: - * 1) an external gpio irq handles the cd (best for power savings) - * 2) internal sdhi irq handles the cd - * 3) a worker thread polls the sdhi - indicated by MMC_CAP_NEEDS_POLL - * 4) the medium is non-removable - indicated by MMC_CAP_NONREMOVABLE - * - * While we increment the runtime PM counter for all scenarios when - * the mmc core activates us by calling an appropriate set_ios(), we - * must additionally ensure that in case 2) the tmio mmc hardware stays - * powered on during runtime for the card detection to work. + * Check the sanity of mmc->f_min to prevent tmio_mmc_set_clock() from + * looping forever... + */ + if (mmc->f_min == 0) { + ret = -EINVAL; + goto host_free; + } + + /* + * While using internal tmio hardware logic for card detection, we need + * to ensure it stays powered for it to work. */ if (_host->native_hotplug) pm_runtime_get_noresume(&pdev->dev); @@ -1074,8 +1153,12 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, _host->sdcard_irq_mask &= ~irq_mask; - if (pdata->flags & TMIO_MMC_SDIO_IRQ) - tmio_mmc_enable_sdio_irq(mmc, 0); + _host->sdio_irq_enabled = false; + if (pdata->flags & TMIO_MMC_SDIO_IRQ) { + _host->sdio_irq_mask = TMIO_SDIO_MASK_ALL; + sd_ctrl_write16(_host, CTL_SDIO_IRQ_MASK, _host->sdio_irq_mask); + sd_ctrl_write16(_host, CTL_TRANSACTION_CTL, 0x0000); + } spin_lock_init(&_host->lock); mutex_init(&_host->ios_lock); @@ -1087,9 +1170,12 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, /* See if we also get DMA */ tmio_mmc_request_dma(_host, pdata); + pm_runtime_set_active(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 50); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + ret = mmc_add_host(mmc); - if (pdata->clk_disable) - pdata->clk_disable(pdev); if (ret < 0) { tmio_mmc_host_remove(_host); return ret; @@ -1103,15 +1189,13 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, tmio_mmc_host_remove(_host); return ret; } + mmc_gpiod_request_cd_irq(mmc); } *host = _host; return 0; -pm_disable: - pm_runtime_disable(&pdev->dev); - iounmap(_host->ctl); host_free: mmc_free_host(mmc); @@ -1142,34 +1226,20 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host) } EXPORT_SYMBOL(tmio_mmc_host_remove); -#ifdef CONFIG_PM_SLEEP -int tmio_mmc_host_suspend(struct device *dev) +#ifdef CONFIG_PM +int tmio_mmc_host_runtime_suspend(struct device *dev) { struct mmc_host *mmc = dev_get_drvdata(dev); struct tmio_mmc_host *host = mmc_priv(mmc); tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_ALL); - return 0; -} -EXPORT_SYMBOL(tmio_mmc_host_suspend); - -int tmio_mmc_host_resume(struct device *dev) -{ - struct mmc_host *mmc = dev_get_drvdata(dev); - struct tmio_mmc_host *host = mmc_priv(mmc); - tmio_mmc_enable_dma(host, true); + if (host->clk_cache) + tmio_mmc_clk_stop(host); - /* The MMC core will perform the complete set up */ - host->resuming = true; - return 0; -} -EXPORT_SYMBOL(tmio_mmc_host_resume); -#endif + if (host->pdata->clk_disable) + host->pdata->clk_disable(host->pdev); -#ifdef CONFIG_PM_RUNTIME -int tmio_mmc_host_runtime_suspend(struct device *dev) -{ return 0; } EXPORT_SYMBOL(tmio_mmc_host_runtime_suspend); @@ -1179,6 +1249,14 @@ int tmio_mmc_host_runtime_resume(struct device *dev) struct mmc_host *mmc = dev_get_drvdata(dev); struct tmio_mmc_host *host = mmc_priv(mmc); + tmio_mmc_reset(host); + tmio_mmc_clk_update(host); + + if (host->clk_cache) { + tmio_mmc_set_clock(host, host->clk_cache); + tmio_mmc_clk_start(host); + } + tmio_mmc_enable_dma(host, true); return 0; diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c index 1defd5ed3236..9a6dfb0c4ecc 100644 --- a/drivers/mmc/host/wbsd.c +++ b/drivers/mmc/host/wbsd.c @@ -803,8 +803,7 @@ static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq) default: #ifdef CONFIG_MMC_DEBUG - pr_warning("%s: Data command %d is not " - "supported by this controller.\n", + pr_warn("%s: Data command %d is not supported by this controller\n", mmc_hostname(host->mmc), cmd->opcode); #endif cmd->error = -EINVAL; @@ -1429,8 +1428,8 @@ free: free_dma(dma); err: - pr_warning(DRIVER_NAME ": Unable to allocate DMA %d. " - "Falling back on FIFO.\n", dma); + pr_warn(DRIVER_NAME ": Unable to allocate DMA %d - falling back on FIFO\n", + dma); } static void wbsd_release_dma(struct wbsd_host *host) @@ -1664,9 +1663,7 @@ static int wbsd_init(struct device *dev, int base, int irq, int dma, ret = wbsd_scan(host); if (ret) { if (pnp && (ret == -ENODEV)) { - pr_warning(DRIVER_NAME - ": Unable to confirm device presence. You may " - "experience lock-ups.\n"); + pr_warn(DRIVER_NAME ": Unable to confirm device presence - you may experience lock-ups\n"); } else { wbsd_free_mmc(dev); return ret; @@ -1688,10 +1685,7 @@ static int wbsd_init(struct device *dev, int base, int irq, int dma, */ if (pnp) { if ((host->config != 0) && !wbsd_chip_validate(host)) { - pr_warning(DRIVER_NAME - ": PnP active but chip not configured! " - "You probably have a buggy BIOS. " - "Configuring chip manually.\n"); + pr_warn(DRIVER_NAME ": PnP active but chip not configured! You probably have a buggy BIOS. Configuring chip manually.\n"); wbsd_chip_config(host); } } else @@ -1884,10 +1878,7 @@ static int wbsd_pnp_resume(struct pnp_dev *pnp_dev) */ if (host->config != 0) { if (!wbsd_chip_validate(host)) { - pr_warning(DRIVER_NAME - ": PnP active but chip not configured! " - "You probably have a buggy BIOS. " - "Configuring chip manually.\n"); + pr_warn(DRIVER_NAME ": PnP active but chip not configured! You probably have a buggy BIOS. Configuring chip manually.\n"); wbsd_chip_config(host); } } |