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* Merge tag 'mmc-v4.9' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds2016-10-054-0/+18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MMC updates from Ulf Hansson: MMC core: - Add support for sending commands during data transfer - Erase/discard/trim improvements - Improved error handling - Extend sysfs with SD status register - Document info about the vmmc/vmmcq regulators - Extend pwrseq-simple to manage an optional post-power-on-delay - Some various minor improvements and cleanups MMC host: - dw_mmc: Add reset support - dw_mmc: Return -EILSEQ for EBE and SBE error - dw_mmc: Some cleanups - dw_mmc-k3: Add UHS-I support Hisilicon Hikey - tmio: Add eMMC support - sh_mobile_sdhi: Add r8a7796 support - sunxi: Don't use sample clocks for sun4i/sun5i - sunxi: Add support for A64 mmc controller - sunxi: Some cleanups and improvements - sdhci: Support for sending commands during data transfer - sdhci: Do not allow tuning procedure to be interrupted - sdhci-pci: Enable SD/SDIO on Merrifield - sdhci-pci|acpi: Enable MMC_CAP_CMD_DURING_TFR - sdhci-pci: Some cleanups - sdhci-of-arasan: Set controller to test mode when no CD bit - sdhci-of-arasan: Some fixes for clocks and phys - sdhci-brcmstb: Don't use ADMA 64-bit when not supported - sdhci-tegra: Mark 64-bit DMA broken on Tegra124 - sdhci-esdhc-imx: Fixups related to data timeouts * tag 'mmc-v4.9' of git://git.linaro.org/people/ulf.hansson/mmc: (68 commits) mmc: dw_mmc: remove the deprecated "supports-highspeed" property mmc: dw_mmc: minor cleanup for dw_mci_adjust_fifoth mmc: dw_mmc: use macro to define ring buffer size mmc: dw_mmc: fix misleading error print if failing to do DMA transfer mmc: dw_mmc: avoid race condition of cpu and IDMAC mmc: dw_mmc: split out preparation of desc for IDMAC32 and IDMAC64 mmc: core: don't try to switch block size for dual rate mode mmc: sdhci-of-arasan: Set controller to test mode when no CD bit dt: sdhci-of-arasan: Add device tree option xlnx, fails-without-test-cd mmc: tmio: add eMMC support mmc: rtsx_usb: use new macro for R1 without CRC mmc: rtsx_pci: use new macro for R1 without CRC mmc: add define for R1 response without CRC mmc: card: do away with indirection pointer mmc: sdhci-acpi: Set MMC_CAP_CMD_DURING_TFR for Intel eMMC controllers mmc: sdhci-pci: Set MMC_CAP_CMD_DURING_TFR for Intel eMMC controllers mmc: sdhci: Support cap_cmd_during_tfr requests mmc: mmc_test: Add tests for sending commands during transfer mmc: core: Add support for sending commands during data transfer mmc: sdhci-brcmstb: Fix incorrect capability ...
| * mmc: add define for R1 response without CRCWolfram Sang2016-09-261-0/+3
| | | | | | | | | | | | | | | | The core uses it for polling. Give drivers a proper define handle this case like for other response types. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| * mmc: core: Add support for sending commands during data transferAdrian Hunter2016-09-262-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A host controller driver exposes its capability using caps flag MMC_CAP_CMD_DURING_TFR. A driver with that capability can accept requests that are marked mrq->cap_cmd_during_tfr = true. Then the driver informs the upper layers when the command line is available for further commands by calling mmc_command_done(). Because of that, the driver will not then automatically send STOP commands, and it is the responsibility of the upper layer to send a STOP command if it is required. For requests submitted through the mmc_wait_for_req() interface, the caller sets mrq->cap_cmd_during_tfr = true which causes mmc_wait_for_req() in fact not to wait. The caller can then send commands that do not use the data lines. Finally the caller can wait for the transfer to complete by calling mmc_wait_for_req_done() which is now exported. For requests submitted through the mmc_start_req() interface, the caller again sets mrq->cap_cmd_during_tfr = true, but mmc_start_req() anyway does not wait. The caller can then send commands that do not use the data lines. Finally the caller can wait for the transfer to complete in the normal way i.e. calling mmc_start_req() again. Irrespective of how a cap_cmd_during_tfr request is started, mmc_is_req_done() can be called if the upper layer needs to determine if the request is done. However the appropriate waiting function (either mmc_wait_for_req_done() or mmc_start_req()) must still be called. The implementation consists primarily of a new completion mrq->cmd_completion which notifies when the command line is available for further commands. That completion is completed by mmc_command_done(). When there is an ongoing data transfer, calls to mmc_wait_for_req() will automatically wait on that completion, so the caller does not have to do anything special. Note, in the case of errors, the driver may call mmc_request_done() without calling mmc_command_done() because mmc_request_done() always calls mmc_command_done(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| * mmc: dw_mmc: add reset support to dwmmc host controllerGuodong Xu2016-09-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dwmmc host controller may in unknown state when entering kernel boot. One example is when booting from eMMC, bootloader need initialize MMC host controller into some state so it can read. In order to make sure MMC host controller in a clean initial state, this reset support is added. With this patch, a 'resets' property can be added into dw_mmc device tree node. The hardware logic is: dwmmc host controller IP receives a reset signal from a 'reset provider' (eg. power management unit). The 'resets' property points to this reset signal. So, during dwmmc driver probe, it can use this signal to reset itself. Refer to [1] for more information. [1] Documentation/devicetree/bindings/reset/reset.txt Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| * mmc: sd: Export SD Status via “ssr” device attributeUri Yanai2016-09-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The SD Status register contains several important fields related to the SD Card proprietary features. Those fields may be used by user space applications for vendor specific usage. None of those fields are exported today by the driver to user space. In this patch, we are reading the SD Status register and exporting (using MMC_DEV_ATTR) the SD Status register to the user space. Signed-off-by: Uri Yanai <uri.yanai@sandisk.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | brcmfmac: add support for bcm4339 chip with modalias sdio:c00v02D0d4339Arend Van Spriel2016-09-091-0/+1
|/ | | | | | | | | | | | | | The driver already supports the bcm4339 chipset but only for the variant that shares the same modalias as the bcm4335, ie. sdio:c00v02D0d4335. It turns out that there are also bcm4339 devices out there that have a more distiguishable modalias sdio:c00v02D0d4339. Reported-by: Steve deRosier <derosier@gmail.com> Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com> Reviewed-by: Franky Lin <franky.lin@broadcom.com> Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* mmc: core: Allow hosts to specify non-support for MMC commandsShawn Lin2016-07-251-0/+1
| | | | | | | | | | | | Host drivers which needs to valdiate for non-supported MMC commands and returnn error code for such requests. To improve and simplify the behaviour, let's invent MMC_CAP2_NO_MMC which these host drivers can set to tell the mmc core to skip sending MMC commands during card initialization. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: remove the quirks flagsJaehoon Chung2016-07-251-9/+0Star
| | | | | | | | | | | Remove the quirks flag. (DW_MCI_QUIRK_BROKEN_DTO) For removing this, enabled the dto_timer by defaults. It doesn't see any I/O performance degression. In future, dwmmc controller should not use the quirks flag. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Allow hosts to specify non-support for SD commandsUlf Hansson2016-07-251-0/+1
| | | | | | | | | | | There are host drivers which needs to valdiate for non-supported SD commands and returnn error code for such requests. To improve and simplify the behaviour, let's invent MMC_CAP2_NO_SD which these host drivers can set to tell the mmc core to skip sending SD commands during card initialization. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Disable HPI for certain Hynix eMMC cardsPratibhasagar V2016-07-251-5/+30
| | | | | | | | | | | | | | Certain Hynix eMMC 4.41 cards might get broken when HPI feature is used and hence this patch disables the HPI feature for such buggy cards. As some of the other features like BKOPs/Cache/Sanitize are dependent on HPI feature, those features would also get disabled if HPI is disabled. Signed-off-by: Pratibhasagar V <pratibha@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> [gdavis: Forward port and cleanup] Signed-off-by: George G. Davis <george_davis@mentor.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: implement enhanced strobe supportShawn Lin2016-07-253-0/+15
| | | | | | | | | | | | | | | | | Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host controllers. This new feature is optional, so it depends both on device's cap and host's cap to decide whether to use it or not. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Douglas Anderson <dianders@chromium.org> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: add mmc-hs400-enhanced-strobe supportShawn Lin2016-07-251-0/+1
| | | | | | | | | | | | This patch introduce mmc-hs400-enhanced-strobe for platforms which want to enable enhanced strobe function from DT if the mmc host controller claims to support enhanced strobe. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* Merge tag 'mmc-v4.7-rc1' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds2016-05-261-0/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MMC fixes from Ulf Hansson: "Here are some mmc fixes intended for v4.7 rc1. They are based on a commit earlier in the merge window and have been tested in linux-next for a while. MMC core: - Prevent re-tuning while serving requests for RPMB partitions - Extend timeout for long read time quirk to support more eMMCs MMC host: - sdhci-acpi: Ensure connected devices are powered when probing - sdhci-pci|acpi: Remove unreliable MMC_CAP_BUS_WIDTH_TEST for Intel HWs - dw_mmc: Correct the assigning of max_blk_size - dw_mmc-rockchip: Allow RPMB partitions to be created - dw_mmc-rockchip: Set the drive phase properly" * tag 'mmc-v4.7-rc1' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: sdhci-acpi: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers mmc: sdhci-pci: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers mmc: longer timeout for long read time quirk mmc: dw_mmc: rockchip: Set the drive phase properly mmc: dw_mmc: fix the wrong max_blk_size mmc: dw_mmc-rockchip: add MMC_CAP_CMD23 capabilities mmc: sdhci-acpi: Ensure connected devices are powered when probing ACPI / PM: Export acpi_device_fix_up_power() mmc: block: Pause re-tuning while switched to the RPMB partition mmc: block: Always switch back to main area after RPMB access mmc: core: Add a facility to "pause" re-tuning
| * mmc: core: Add a facility to "pause" re-tuningAdrian Hunter2016-05-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-tuning is not possible when switched to the RPMB partition. However re-tuning should not be needed if re-tuning is done immediately before switching, a small set of operations is done, and then we immediately switch back to the main partition. To ensure that re-tuning can't be done for a short while, add a facility to "pause" re-tuning. The existing facility to hold / release re-tuning is used but it also flags re-tuning as needed to cause re-tuning before the next command (which will be the switch to RPMB). We also need to "unpause" in the recovery path, which is catered for by adding it to mmc_retune_disable(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | Merge tag 'wireless-drivers-next-for-davem-2016-05-13' of ↵David S. Miller2016-05-211-0/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== wireless-drivers patches for 4.7 Major changes: iwlwifi * remove IWLWIFI_DEBUG_EXPERIMENTAL_UCODE kconfig option * work for RX multiqueue continues * dynamic queue allocation work continues * add Luca as maintainer * a bunch of fixes and improvements all over brcmfmac * add 4356 sdio support ath6kl * add ability to set debug uart baud rate with a module parameter wil6210 * add debugfs file to configure firmware led functionality ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * brcmfmac: Add 4356 sdio supportChristian Daudt2016-05-111-0/+1
| | | | | | | | | | | | | | This adds support for the 4356-sdio wireless chip. Signed-off-by: Christian Daudt <csd@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* | mmc: sh_mobile_sdhi: remove obsolete include fileWolfram Sang2016-05-021-10/+0Star
| | | | | | | | | | | | | | | | | | | | | | A few SH boards include the file but don't make use of it (no named interrupts). The SDHI code removed support for this feature as well. So, drop the references and ultimately remove the unneeded file. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Rich Felker <dalias@libc.org> Acked-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | mmc: tmio: merge distributed include filesWolfram Sang2016-05-021-73/+0Star
| | | | | | | | | | | | | | | | | | There is no reason to have a public and private header file. Merge them into a private one, so looking up symbols is less confusing. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | mmc: dw_mmc: remove unused EVENT_XFER_ERRORShawn Lin2016-05-021-1/+0Star
| | | | | | | | | | | | | | | | EVENT_XFER_ERROR isn't been used now, so it can be removed. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | mmc: dw_mmc: fix warning reported by kernel-docShawn Lin2016-05-021-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Try to fix the warning reported by: scripts/kernel-doc -man -v include/linux/mmc/dw_mmc.h > /dev/null warning: No description found for parameter 'irq_lock' warning: No description found for parameter 'stop_abort' warning: No description found for parameter 'prev_blksz' warning: No description found for parameter 'timing' warning: No description found for parameter 'ring_size' warning: No description found for parameter 'dms' warning: No description found for parameter 'phy_regs' warning: No description found for parameter 'fifoth_val' warning: No description found for parameter 'vqmmc_enabled' warning: No description found for parameter 'cmd11_timer' warning: Excess struct/union/enum/typedef member 'card_tasklet' description in 'dw_mci' Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | mmc: host: add note that set_ios needs to handle 0Hz properlyWolfram Sang2016-05-021-10/+21
| | | | | | | | | | | | | | | | While here, refactor the comments so that they are before the declaration they are referring to. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* | mmc: tmio: Add UHS-I mode supportWolfram Sang2016-05-021-0/+2
|/ | | | | | | | | | Based on work by Shinobu Uehara and Ben Dooks. This adds the voltage switch operation needed for all UHS-I modes, but not the tuning needed for SDR-104 which will come later. Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: remove DW_MCI_QUIRK_BROKEN_CARD_DETECTION quirkShawn Lin2016-02-291-3/+1Star
| | | | | | | | | | | | dw_mmc already use mmc_of_parse to get "broken-cd" property, but it considered "broken-cd" to be a quirk in its driver. We don't need this quirk here, and just take what we need from mmc->caps. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: remove struct block_settingsShawn Lin2016-02-291-8/+0Star
| | | | | | | | | This patch removes struct block_settings since it's never used anywhere. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: tmio: refactor set_clock a littleWolfram Sang2016-02-291-0/+5
| | | | | | | | | | | | Some of the indentation made the code awful to read. Fix that. Also, introduce defines instead of magic hex values. Note that this includes one change: We mask out know 0xff instead of 0x1ff. But 0x100 has always been the clock enable bit. It doesn't make any sense to set it depending on the clock calculation. Update copyright notices, too. I'll be working on those files some more in the future. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: remove the MMC_DATA_STREAM flagJaehoon Chung2016-02-291-1/+0Star
| | | | | | | | | It's not set to MMC_DATA_STREAM anywhere. It seems that it had been used with CMD11/CMD20. But according to Spec, CMD11/CMD20 are obsolete command. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: remove the unused quirksJaehoon Chung2016-01-051-8/+2Star
| | | | | | | Removed the unused quirks. These quirks don't used anywhere. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: use resource_size_t to store physical addressArnd Bergmann2015-12-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | The dw_mmc driver stores the physical address of the MMIO registers in a pointer, which requires the use of type casts, and is actually broken if anyone ever has this device on a 32-bit SoC in registers above 4GB. Gcc warns about this possibility when the driver is built with ARM LPAE enabled: mmc/host/dw_mmc.c: In function 'dw_mci_edmac_start_dma': mmc/host/dw_mmc.c:702:17: warning: cast from pointer to integer of different size cfg.dst_addr = (dma_addr_t)(host->phy_regs + fifo_offset); ^ mmc/host/dw_mmc-pltfm.c: In function 'dw_mci_pltfm_register': mmc/host/dw_mmc-pltfm.c:63:19: warning: cast to pointer from integer of different size host->phy_regs = (void *)(regs->start); This changes the code to use resource_size_t, which gets rid of the warning, the bug and the useless casts. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Introduce MMC_CAP2_NO_SDIO capCarlo Caione2015-12-221-0/+1
| | | | | | | | This patch introduce a new MMC_CAP2_NO_SDIO cap used to tell the mmc core to not send SDIO specific commands. Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Refactor code to register the MMC PM notifierUlf Hansson2015-12-221-2/+2
| | | | | | | | | Instead of checking for "#ifdef" directly in the code, let's invent a pair of mmc core functions to deal with register/unregister the MMC PM notifier block. Implement stubs for these functions when CONFIG_PM_SLEEP is unset, as in that case the PM notifiers isn't used. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Remove MMC_CAP_RUNTIME_RESUME as it's redundantUlf Hansson2015-12-221-1/+0Star
| | | | Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mmc: extend the mmc_send_tuning()Chaotian Jing2015-10-271-1/+1
| | | | | | | | | | | | | | | | The mmc_execute_tuning() has already prepared the opcode, there is no need to prepare it again at mmc_send_tuning(), and, there is a BUG of mmc_send_tuning() to determine the opcode by bus width, assume eMMC was running at HS200, 4bit mode, then the mmc_send_tuning() will overwrite the opcode from CMD21 to CMD19, then got error. in addition, extend an argument of "cmd_error" to allow getting if there was cmd error when tune response. Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> [Ulf: Rebased patch] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: Add external dma interface supportShawn Lin2015-10-261-2/+21
| | | | | | | | | | | | DesignWare MMC Controller can supports two types of DMA mode: external dma and internal dma. We get a RK312x platform integrated dw_mmc and ARM pl330 dma controller. This patch add edmac ops to support these platforms. I've tested it on RK31xx platform with edmac mode and RK3288 platform with idmac mode. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Add mmc_regulator_set_vqmmc()Douglas Anderson2015-10-261-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds logic to the MMC core to set VQMMC. This is expected to be called by MMC drivers like dw_mmc as part of (or instead of) their start_signal_voltage_switch() callback. A few notes: * When setting the signal voltage to 3.3V we do our best to make VQMMC and VMMC match. It's been reported that this makes some old cards happy since they were tested back in the day before UHS when VQMMC and VMMC were provided by the same regulator. A nice side effect of this is that we don't end up on the hairy edge of VQMMC (2.7V), which some EEs claim is a little too close to the minimum for comfort. This is done in two steps. At first we try to find a VQMMC within a 0.3V tolerance of VMMC and if this is not supported by the supplying regulator we try to find a suitable voltage within the whole 2.7V-3.6V area of the spec. * The two step approach is currently necessary, as the used regulator_set_voltage_triplet(min, target, max) uses a simple implementation that just tries two basic steps: regulator_set_voltage(target, max); regulator_set_voltage(min, target); So with only one step with 2.7-3.6V borders, if a suitable voltage is a bit below VMMC, we would directly get the lowest 2.7V which some boards (like Rockchips) don't like at all. * When setting the signal voltage to 1.8V or 1.2V we aim for that specific voltage instead of picking the lowest one in the range. * We very purposely don't print errors in mmc_regulator_set_vqmmc(). There are cases where the MMC core will try several different voltages and we don't want to pollute the logs. Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Remove MMC_CLKGATEUlf Hansson2015-10-262-33/+0Star
| | | | | | | | | | | | | | | | | MMC_CLKGATE was once invented to save power by gating the bus clock at request inactivity. At that time it served its purpose. The modern way to deal with power saving for these scenarios, is by using runtime PM. Nowadays, several host drivers have deployed runtime PM, but for those that haven't and which still cares power saving at request inactivity, it's certainly time to deploy runtime PM as it has been around for several years now. To simplify code to mmc core and thus decrease maintenance efforts, this patch removes all code related to MMC_CLKGATE. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
* mmc: core: Convert __mmc_switch() into an internal core functionUlf Hansson2015-10-261-2/+0Star
| | | | | | | As there are no users of the __mmc_switch() API, except for the mmc core itself, let's convert it from an exported function into an internal. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: block: skip trim for some kingston eMMCsShawn Lin2015-08-271-0/+2
| | | | | | | | | | | For some mass production of kingston eMMCs which adopt Phison's firmware will meet an unrecoverable data conrruption occasionally if performing trim due to a firmware bug confirmed by vendor. We found it on Intel-C3230RK platform. So we add fixup of broken trim for it. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: add quirk for broken data transfer over schemeAddy Ke2015-08-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch add a new quirk to add a s/w timer to notify the driver to terminate current transfer and report a data timeout to the core, if DTO interrupt does NOT come within the given time. dw_mmc call mmc_request_done func to finish transfer depends on DTO interrupt. If DTO interrupt does not come in sending data state, the current transfer will be blocked. We got the reply from synopsys: There are two counters but both use the same value of [31:8] bits. Data timeout counter doesn't wait for stop clock and you should get DRTO even when the clock is not stopped. Host Starvation timeout counter is triggered with stop clock condition. This means that host should get DRTO and DTO interrupt. But this case really exists, when driver reads tuning data from card on RK3288-pink2 board. I measured waveforms by oscilloscope and found that card clock was always on and data lines were always holded high level in sending data state. There are two possibility that data over interrupt doesn't come in reading data state on RK3X SoCs: - get command done interrupt, but doesn't get any data-related interrupt. - get data error interrupt, but doesn't get data over interrupt. Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
* mmc: dw_mmc: remove the unused blk_settingJaehoon Chung2015-08-171-1/+0Star
| | | | | | "blk_setting" doesn't use anywhere. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
* mmc: dw_mmc: fix pio mode when internal dmac is enabledHeiko Stuebner2015-08-171-4/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | The dw_mci_init_dma() may decide to not use dma, but pio instead, caused by things like wrong dma settings in the system. Till now the code dw_mci_init_slot() always assumed that dma is available when CONFIG_MMC_DW_IDMAC was defined, ignoring the host->use_dma var set during dma init. So when now the dma init failed for whatever reason, the transfer sizes would still be set for dma transfers, especially including the maximum block-count calculated from host->ring_size and resulting in a [ 4.991109] ------------[ cut here ]------------ [ 4.991111] kernel BUG at drivers/mmc/core/core.c:256! [ 4.991113] Internal error: Oops - BUG: 0 [#1] SMP ARM because host->ring_size is 0 in this case and the slot init code uses the wrong code to calculate the values. Fix this by selecting the correct calculations using the host->use_dma variable instead of the CONFIG_MMC_DW_IDMAC config option. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
* mmc: sdio: avoid using NULL sdio_irq_thread pointerYangbo Lu2015-08-171-1/+2
| | | | | | | | | | | For Freescale QorIQ LS1021AQDS board, there is a SDIO interrupt in the process of resume without inserting SD adapter because of some unknown issue. But the driver doesn't assign sdio_irq_thread pointer. This will block the resume of kernel. This patch is used to avoid using NULL sdio_irq_thread pointer. Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Optimize case for exactly one erase-group budgetDavid Jander2015-08-171-0/+1
| | | | | | | | | | | In the (not so unlikely) case that the mmc controller timeout budget is enough for exactly one erase-group, the simplification of allowing one sector has an enormous performance penalty. We optimize this special case by introducing a flag that prohibits erase-group boundary crossing, so that we can allow trimming more than one sector at a time. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mediatek: Add Mediatek MMC driverChaotian Jing2015-06-181-0/+1
| | | | | | | | Add Mediatek MMC driver code Support eMMC/SD/SDIO Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: sdhci-pci: Add support for drive strength selection for SPTAdrian Hunter2015-06-011-0/+2
| | | | | | | | Implement the select_drive_strength callback to provide drive strength selection for Intel SPT. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mmc: Add driver strength selectionAdrian Hunter2015-06-011-0/+3
| | | | | | | | Add the ability to set eMMC driver strength for HS200 and HS400. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mmc: Read card's valid driver strength maskAdrian Hunter2015-06-012-0/+2
| | | | | | | | | | | In preparation for supporing drive strength selection for eMMC, read the card's valid driver strengths. Note that though the SD spec uses the term "drive strength", the JEDEC eMMC spec uses the term "driver strength". Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Record card drive strengthAdrian Hunter2015-06-011-0/+1
| | | | | | | | | | | In preparation for adding drive strength support for eMMC, add drive_strength to struct mmc_card to record the card drive strength for UHS-I modes and HS200 / HS400. For eMMC this will be needed when switching between HS200 and HS400. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Add 'card' to drive strength selection callbackAdrian Hunter2015-06-011-1/+2
| | | | | | | | | In preparation for supporting also eMMC drive strength, add the 'card' as a parameter so that the callback can distinguish different types of cards if necessary. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Allow card drive strength to be different to hostAdrian Hunter2015-06-011-1/+2
| | | | | | | | | | | | | Initialization of UHS-I modes for SD and SDIO cards employs a callback to allow the host driver to choose a drive strength value. Currently that assumes the card drive strength and host driver type must be the same value. Change to let the callback make that decision and return both the card drive strength and host driver type. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: dw_mmc: Use core to handle absent write protect lineLars-Peter Clausen2015-06-011-6/+0Star
| | | | | | | | | | | | | Use the new MMC_CAP2_NO_WRITE_PROTECT to let the core handle the case where no write protect line is present instead of having custom driver code to handle it. dw_mci_of_get_slot_quirks() is slightly refactored to directly modify the mmc_host capabilities instead of returning a quirk mask. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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