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2013-02-24mmc: sdhci: rename platform_8bit_width to platform_bus_widthSascha Hauer6-14/+14
The 8bit in the function name is misleading. When set, it will be used to set the bus width, regardless of whether 8bit or another bus width is requested, so change the function name to platform_bus_width. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: Auto CMD23 support for usdhcShawn Guo1-1/+9
SDHCI core will try to use Auto CMD23 for mmc card. Currently, we will see the following message with mmc card on usdhc due to the lacking of Auto CMD23 support in the driver. $ mmc0: new high speed MMC card at address 0001 mmcblk1: mmc0:0001 MMC02G 1.87 GiB mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb00 mmcblk1: retrying using single block read mmcblk1: Enable Auto CMD23 support for usdhc so that mmc card can work in multiple block mode. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: manually reset MIX_CTRL for usdhcShawn Guo1-1/+8
It's another violation to SDHC spec that software reset on usdhc does not reset MIX_CTRL register. Have to do it manually, otherwise the preserving of the register bits (e.g. AC23EN) may cause mmc card fail to be initialized. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: separate transfer mode from command write for usdhcShawn Guo1-11/+14
The combining of SDHCI_TRANSFER_MODE and SDHCI_COMMAND writes is only required for esdhc, but not necessarily for usdhc. Different from esdhc where the bits for transfer mode and command are all in the same register CMD_XFR_TYP, usdhc has a newly introduced register MIX_CTRL to hold transfer mode bits. So it makes more sense to separate transfer mode from command write for usdhc. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: core: move the cache disabling operation to mmc_suspendMaya Erez2-7/+8
Cache control is an eMMC feature and in therefore should be part of MMC's bus resume operations, performed in mmc_suspend, rather than in the generic mmc_suspend_host(). Signed-off-by: Maya Erez <merez@codeaurora.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24MAINTAINERS: mmc: add maintainer entry for dw_mmc driverSeungwon Jeon1-0/+8
Add maintainer entry for the Synopsys DW host driver which is used in various SOC including EXYNOS series. As Will Newton will no longer be able to take care of dw_mmc*, I and Jaehoon Chung are willing to maintain it. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: Remove unused variablesFabio Estevam1-5/+0
3f175a6e5 (mmc: sdhci-esdhc-imx: remove ESDHC_CD_GPIO handling from IO accessory) introduced the following build warnings: drivers/mmc/host/sdhci-esdhc-imx.c:149:30: warning: unused variable 'boarddata' [-Wunused-variable] drivers/mmc/host/sdhci-esdhc-imx.c:181:30: warning: unused variable 'boarddata' [-Wunused-variable] Remove the unused variables. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: fix DT binding documentation SDHCI left-overGuennadi Liakhovetski1-1/+1
The file Documentation/devicetree/bindings/mmc/mmc.txt is common for all MMC host drivers. Use a generic MMC host reference instead of an SDHCI left-over. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: name esdhc specific definitions with ESDHC_ prefixShawn Guo1-20/+20
Rename esdhc local definitions with ESDHC_ rather than SDHCI_ prefix, so that we can distinguish them from SDHCI core definitions from name. A couple of bit fields are also changed use shift for consistency and better readability. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: remove D3CD check from SDHCI_HOST_CONTROL writeShawn Guo1-4/+2
SDHCI_CTRL_D3CD is not a standard SDHCI_HOST_CONTROL, so there is no need to check it in SDHCI_HOST_CONTROL write at all. Remove it. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: sdhci-esdhc-imx: fix host version readShawn Guo1-8/+11
When commit 95a2482 (mmc: sdhci-esdhc-imx: add basic imx6q usdhc support) works around host version issue on imx6q, it gets the register address fixup "reg ^= 2" lost for imx25/35/51/53 esdhc. Thus, the controller version on these SoCs is wrongly identified as v1 while it's actually v2. Add the address fixup back and take a different approach to correct imx6q host version, so that the host version read gets back to work for all SoCs. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: vt8500: Remove erroneous __exitp in wmt_mci_driverTony Prisk1-1/+1
With the __devinit/__devexit attributes having been removed, this __exitp attribute causes an unused function warning and should be removed as well. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: dw_mmc: Remove DW_MCI_QUIRK_NO_WRITE_PROTECTDoug Anderson2-14/+1
The original quirk was added in the change 'mmc: dw_mmc: add quirk to indicate missing write protect line'. The original quirk was added at a controller level even though each slot has its own write protect (so the quirk should be at the slot level). A recent change (mmc: dw_mmc: Add "disable-wp" device tree property) added a slot-level quirk and support for the quirk directly to dw_mmc. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Will Newton <will.newton@imgtec.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: dw_mmc: Handle wp-gpios from device treeDoug Anderson1-0/+34
On some SoCs (like exynos5250) you need to use an external GPIO for write protect. Add support for wp-gpios to the core dw_mmc driver since it could be useful across multiple SoCs. With this change I am able to make use of the write protect for the external SD slot on exynos5250-snow. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: dw_mmc: exynos: Remove code for wp-gpiosDoug Anderson1-10/+0
The exynos code claimed the write protect with devm_gpio_request() but never did anything with it. That meant that anyone using a write protect GPIO would effectively be write protected all the time. The handling for wp-gpios belongs in the main dw_mmc driver and has been moved there. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24ARM: dts: Add disable-wp for sd card slot on smdk5250Doug Anderson1-0/+1
The next change will remove the code from the dw_mmc-exynos that added the DW_MCI_QUIRK_NO_WRITE_PROTECT. Keep existing functionality of having no write protect pin on smdk5250 by adding the disable-wp property. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: dw_mmc: Add "disable-wp" device tree propertyDoug Anderson3-3/+59
The "disable-wp" property is used to specify that a given SD card slot doesn't have a concept of write protect. This eliminates the need for special case code for SD slots that should never be write protected (like a micro SD slot or a dev board). The dw_mmc driver is special in needing to specify "disable-wp" because the lack of a "wp-gpios" property means to use the special purpose write protect line. On some other mmc devices the lack of "wp-gpios" means that write protect should be disabled. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Will Newton <will.newton@imgtec.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: correct the EXCEPTION_EVENTS_STATUS value in commentZhang, YiX X1-1/+1
The right value is 54 according to eMMC 4.5 specification. Signed-off-by: ZhangYi <yix.x.zhang@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: mxs-mmc: Fix warning due to incorrect typeFabio Estevam1-1/+1
Fixes the following warning when building with W=1 option: drivers/mmc/host/mxs-mmc.c: In function 'mxs_mmc_adtc': drivers/mmc/host/mxs-mmc.c:401:2: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] The warning happens because 'i' is used in 'for_each_sg(sgl, sg, sg_len, i)' and should be made unsigned. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: mxs-mmc: Add MODULE_ALIAS()Fabio Estevam1-0/+1
Add an entry for MODULE_ALIAS(). Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: mvsdio: add pinctrl integrationThomas Petazzoni1-0/+6
On many Marvell SoCs, the pins used for the SDIO interface are part of the MPP pins, that are muxable pins. In order to get the muxing of those pins correct, this commit integrates the mvsdio driver with the pinctrl infrastructure by calling devm_pinctrl_get_select_default() during ->probe(). Note that we permit this function to fail because not all Marvell platforms have yet been fully converted to using the pinctrl infrastructure. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Stefan Peter <s.peter@mpl.ch> Tested-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: mvsdio: implement a Device Tree bindingThomas Petazzoni2-15/+66
This patch adds a simple Device Tree binding for the mvsdio driver, as well as the necessary documentation for it. Compatibility with non-DT platforms is preserved, by keeping the platform_data based initialization. We introduce a small difference between non-DT and DT platforms: DT platforms are required to provide a clocks = <...> property, which the driver uses to get the frequency of the clock that goes to the SDIO IP. The behaviour on non-DT platforms is kept unchanged: a clock reference is not mandatory, but the clock frequency must be passed in the "clock" field of the mvsdio_platform_data structure. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Stefan Peter <s.peter@mpl.ch> Tested-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: mvsdio: use slot-gpio for card detect gpioThomas Petazzoni1-30/+9
The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice set of helper functions to simplify the management of the card detect GPIO in MMC host drivers. This patch migrates the mvsdio driver to using those helpers, which will make the ->probe() code simpler, and therefore ease the process of adding a Device Tree binding for this driver. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Stefan Peter <s.peter@mpl.ch> Tested-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: mvsdio: use slot-gpio infrastructure for write protect gpioThomas Petazzoni1-25/+5
The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice set of helper functions to simplify the management of the write protect GPIO in MMC host drivers. This patch migrates the mvsdio driver to using those helpers, which will make the ->probe() code simpler, and therefore ease the process of adding a Device Tree binding for this driver. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Stefan Peter <s.peter@mpl.ch> Tested-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sdhci-esdhc-imx: remove ESDHC_CD_GPIO handling from IO accessoryShawn Guo1-17/+0
With commit 9444e07 (mmc: remove unncessary mmc_gpio_free_cd() call from slot-gpio users) in place, the ESDHC_CD_GPIO handling in IO accessories becomes unnecessary. Remove it. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sdhci: introduce sdhci_update_clock helper to re-enable clockAndy Shevchenko1-14/+13
There are three places where same piece of code is used. Let's split it to a separate function. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sdhci-pxav3: add IRQ wake up supportKevin Liu1-0/+7
[cjb: The MMP3 architecture requires a registered interrupt to retire wfi when waking from suspend.] Signed-off-by: Jialing Fu <jlfu@marvell.com> Signed-off-by: Kevin Liu <kliu5@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sdhci: add IRQ wake up supportKevin Liu1-18/+42
Don't disable SD Host IRQ during suspend if it is wake up source. Enable wakeup event during suspend. Signed-off-by: Jialing Fu <jlfu@marvell.com> Signed-off-by: Kevin Liu <kliu5@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sdhci: disable interrupt before free_irqKevin Liu1-0/+3
Current code missed disabling interrupts before free irq which is shared. Notice below comments for function free_irq (kernel/irq/manage.c): On a shared IRQ the caller must ensure the interrupt is disabled on the card it drives before calling this function. Original code has below issue during suspend/resume when multiple SD hosts share the same IRQ: 1. Assume there are two hosts (host1 for emmc while host2 for sd) share the same mmc irq. 2. When system suspend, host2 will be suspended before host1. So the sequence is below: step1: irq handler for host2 removed -> step2: irq handler for host1 removed and irq disabled -> ... system suspended ... ... system resumed ... step3: irq enabled and the irq handler for host1 restored -> step4: irq handler for host2 restored 3. So there is the buggy time slot that the irq is enabled but the irq handler for host2 is removed. Then host2 interrupt can be triggered but can't be handled at that moment. Signed-off-by: Jialing Fu <jlfu@marvell.com> Signed-off-by: Kevin Liu <kliu5@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: add BCM2835 driverStephen Warren4-0/+257
Add a very simple driver for the BCM2835 SoC, which is used in the Raspberry Pi board. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: fix async request mechanism for sequential read scenariosKonstantin Dorfman9-19/+191
When current request is running on the bus and if next request fetched by mmcqd is NULL, mmc context (mmcqd thread) gets blocked until the current request completes. This means that if new request comes in while the mmcqd thread is blocked, this new request can not be prepared in parallel to current ongoing request. This may result in delaying the new request execution and increase it's latency. This change allows to wake up the MMC thread on new request arrival. Now once the MMC thread is woken up, a new request can be fetched and prepared in parallel to the current running request which means this new request can be started immediately after the current running request completes. With this change read throughput is improved by 16%. Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org> Reviewed-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: queue: exclude asynchronous transfer for special requestSeungwon Jeon1-0/+10
Unlike normal r/w request, special requests(discard, flush) is finished with a one-time issue_fn. Request change to mqrq_prev makes unnecessary call. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Reviewed-by: Konstantin Dorfman <kdorfman@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: simplify IRQ processingGuennadi Liakhovetski1-46/+19
The classical way to process IRQs is read out the status, ack all triggered IRQs, possibly mask them, then process them. Follow this simple procesure instead of the current complex custom algorithm. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: report all errorsTeppei Kamijou1-8/+23
Make error reporting in the driver more verbose. This patch is based on an earlier work by Teppei Kamijou, but we try to not add any new error messages to the log in the normal case to avoid confusing the user, and also add a few more dev_dbg() calls. Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> [g.liakhovetski@gmx.de: avoid producing new errors in normal case] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: fix I/O errorsGuennadi Liakhovetski1-1/+3
The INT_BUFWEN IRQ often arrives with other bits set too. If they are not cleared, an additional IRQ can be triggered, sometimes also after the MMC request has already been completed. This leads to block I/O errors. Earlier Teppei Kamijou also observed these additional interrupts and proposed to explicitly wait for them. This patch chooses an alternative approach of clearing all active bits immediately, when processing the main interrupt. Reported-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: reset DMA completion immediately before starting DMAGuennadi Liakhovetski1-2/+6
DMA completion can be signalled from the DMA callback and from the error handler. If both are called, the completion struct can enter an inconsistent state. To prevent this move completion initialisation immediately before activating DMA. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: reset error code for any opcodeGuennadi Liakhovetski1-1/+1
If a command execution has produced an error, it has to be reset as a part of the error handling. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: fix a race, causing an Oops on SMPGuennadi Liakhovetski1-3/+36
Oopses have been observed on SMP in the sh-mmcif IRQ thread, when the two IRQ threads run simultaneously on two CPUs. Also take care to guard the timeout work and the DMA completion callback from possible NULL-pointer dereferences and races. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: (cosmetic) simplify boolean return blocksGuennadi Liakhovetski1-7/+2
Use "return condition" instead of "if (condition) return true; return false" in functions, returning bool. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: Terminate DMA transactions when detecting timeout or errorTeppei Kamijou1-14/+17
If a DMA transaction fails, terminate all outstanding DMA transfers and unmap buffers. Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> [g.liakhovetski@gmx.de: forward-port, add dma_unmap_sg() in error cases] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: fix missing and consolidate IO completion timeoutsGuennadi Liakhovetski1-23/+22
Read block and write block operations are currently missing completion timeouts. Add missing timeouts and consolidate them at one location. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: Avoid unnecessary mmc_delay() at mmc_card_sleepawake()Teppei Kamijou1-1/+3
SH/R-Mobile MMCIF host controller can wait while the card signals busy. Set MMC_CAP_WAIT_WHILE_BUSY to inform an upper layer (core/mmc_ops.c) not to insert unnecessary mmc_delay(). Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: Use msecs_to_jiffies() for host->timeoutTeppei Kamijou1-1/+1
Timeout period should be properly normalized using msecs_to_jiffies(). Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: Add support for eMMC Dual Data RateTeppei Kamijou1-0/+14
Some MMCIF implementations support the Dual Data Rate. With this patch, platforms can set the MMC_CAP_UHS_DDR50 capability flag in MMCIF platform data. This will let the MMC core to actually use the DDR mode. Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: add support for bundled MMCIF IRQsShinya Kuribayashi1-9/+16
On newer SoCs like R-Mobile U2, MMCIF interrupts are bundled. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: ensure run-time suspend call is processed before suspendTeppei Kamijou1-1/+1
With this post-v2.6.35 change applied: commit a0a1a5fd4fb15ec61117c759fe9f5c16c53d9e9c Author: Tejun Heo <tj@kernel.org> Date: Tue Jun 29 10:07:12 2010 +0200 workqueue: reimplement workqueue freeze using max_active freeze_workqueues_begin() was introduced and workqueue now gets frozen before device drivers suspend operations. We have to ensure that run-time PM suspend operation completes before system-wide suspend is started. Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sh_mmcif: force to fail CMD52 immediatelyTeppei Kamijou1-0/+1
mmc_rescan() sends CMD52 (SD_IO_RW_DIRECT) to reset SDIO card during card detection. CMD52 should be ignored by SD/eMMC cards, but we can also abort it in the driver immediately, since MMCIF doesn't support SDIO cards anyway. Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: sdhci-esdhc-imx: use slot-gpio helpers for CD and WPShawn Guo1-40/+16
Use slot-gpio helpers to save some code in the driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: remove unncessary mmc_gpio_free_cd() call from slot-gpio usersShawn Guo3-19/+0
Since slot-gpio uses devm_* managed functions in mmc_gpio_request_cd() now, we can remove those mmc_gpio_free_cd() call from host drivers' .probe() error path and .remove(). Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11mmc: slot-gpio: use devm_* managed functions to ease usersShawn Guo1-6/+51
Use devm_* managed functions, so that slot-gpio users do not have to call mmc_gpio_free_ro/cd to free up resources requested in mmc_gpio_request_ro/cd. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
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