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path: root/drivers/mmc/host
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2012-06-04Merge Linaro Android branch ' jstultz/linaro-android-3.4Philippe Langlais
' into integration-android-ux500 Signed-off-by: Philippe Langlais <philippe.langlais@stericsson.com>
2012-05-22mmci: the AMBA level regulator has been removed in 3.4storage-mmcPhilippe Langlais
See 1e45860f541497d73162305d48b638d9b87e1ae3 "ARM: 7366/3: amba: Remove AMBA level regulator support" for more precision. Signed-off-by: Philippe Langlais <philippe.langlais@linaro.org>
2012-05-22mmc: mmci : Do not use polling for non removable cardsFredrik Soderstedt
Do not use polling to detect non removable cards. ST-Ericsson ID: 372618 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I18797e5f85d83213bbf520277576425bed4c68f2 Signed-off-by: Fredrik Soderstedt <fredrik.soderstedt@stericsson.com> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/51859
2012-05-22mmc: mmci: Limit command frequency when using a levelshifterUlf Hansson
Due to timing issues for command direction signaling when using a levelshifter, we limit the frequency to 25 MHz while sending commands. The frequency is just limited during the command send/response, then it is restored to it's original value. ST-Ericsson ID: 355531 ST-Ericsson Linux next: - ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I15d06e3c331a4db717a904937ce6ce60972d185e Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/51785
2012-05-22mmc: mmci: optimize pre_req if no previous requestPer Forlin
Don't prepare DMA in the pre_req hook if there is no previous request. Instead, prepare DMA while start command is being issued. ST-Ericsson Linux next: N/A ST-Ericsson ID: 371812 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I0008b79cbe0e87f830365e689795f344aac3014b Signed-off-by: Per Forlin <per.forlin@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/36181 Reviewed-by: QATOOLS Reviewed-by: QABUILD Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
2012-05-22ARM: mmci: DMA preparations in parellel with cmdPer Forlin
Do DMA preparations after start_command() instead of before. DMA is being prepared while the controller process the read/write cmd. This flow will decrease the start up latency which improves the throughput, especially for small transfers. ST-Ericsson Linux next: N/A ST-Ericsson ID: 371812 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I98db024658cac5fe6ee09e4250c31e53a643bead Signed-off-by: Per Forlin <per.forlin@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/36180 Reviewed-by: QABUILD Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
2012-05-22mmc: mmci: Add support for start_signal_voltage_switchUlf Hansson
This function switches I/O voltage, which is needed to support UHS-I cards with 1.8V I/O. Change-Id: Id33a9c6e15bd4ba598e533bf9115cb7583369706 Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/50383 Reviewed-by: Per FORLIN <per.forlin@stericsson.com>
2012-05-22mmc: mmci: Fixup post error handling for dmaUlf Hansson
The next pointers for the next dma job needs to be reset when an error occurs. Change-Id: Ieae63ccb97b11c0f6edb7b383c84259082b83760 Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/50454 Reviewed-by: Per FORLIN <per.forlin@stericsson.com> Reviewed-by: QABUILD
2012-05-22mmc: mmci: Do not finalize dma job at data error irqUlf Hansson
mmci_dma_finalize must not be executed when a data error irq has been received. We do mmci_dma_unmap directly instead and moreover make sure the dma handles are reset as soon as the dma job is done/terminated. Change-Id: Ib4ed3f380f4383cb2a28613552569b950c5204a5 Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/49925 Reviewed-by: Per FORLIN <per.forlin@stericsson.com>
2012-05-22mmc: mmci: Cleanup code for DMA handlingUlf Hansson
The cookie is now used to indicate if dma_unmap_sg shall be done in post_request. At DMA errors, the DMA job is immediately not only terminated but also unmapped. To indicate that this has been done the cookie is reset to zero. post_request will thus only do dma_umap_sg for requests which has a cookie not set to zero. Some corresponding duplicated code could then be removed and moreover some minor corrections at DMA errors for terminating the same DMA job twice has also been fixed. ST-Ericsson Linux next: N/A ST-Ericsson ID: 371812 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I2fedfc906ec861ab431f43c333237adb85f2fa99 Signed-off-by: Per Forlin <per.forlin@stericsson.com> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/47628
2012-05-22mmc: mmci: Use ios_handler to save powerUlf Hansson
To disable a levelshifter when we are in an idle state will decrease current consumption. We make use of the ios_handler at runtime suspend and at regular suspend to accomplish this. Of course depending on the used levelshifter the decrease of current differs. For ST6G3244ME the value is up to ~200 uA. Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Change-Id: Ie782d3af7932730c442dcb6c7f12b2f69dcac75e Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/44399 Reviewed-by: QABUILD Reviewed-by: QATEST
2012-05-22mmc: mmci: Implement PM runtime callbacks to save powerUlf Hansson
In the runtime_suspend callback we make use of mmci_save to disable the VCORE regulator and the MCLK to decrease current consumption. At runtime resume, we use mmci_restore to re-enable the resourses again. From now on this will mean that especially the mmci_restore function must be fast to execute since otherwise request latency will be introduced. For the ARM Primcell PL180, the MMCIPOWER register is used to control an external power supply to the card. Thus we need to prevent the runtime callbacks from doing save and restore, otherwise the power to card will be cut. This is done by adding a new flag to the variant data. Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Change-Id: Ic6af2f59e57df82acb4be730bb855e1d39c9439b Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/44398 Reviewed-by: QABUILD
2012-05-22mmc: mmci: Decrease current consumption in suspendUlf Hansson
To decrease current consumption in suspend state the VCORE regulator, the MCLK and PCLK for the ARM PL18x are now disabled. When resuming the resourses are re-enabled and register values for MMCICLOCK, MMCIPOWER and MMCIMASK0 are restored. Change-Id: I400237bf67fa37861d6fb47c4a2fd493b58c3a60 Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/44397 Reviewed-by: QABUILD
2012-05-22mmc: mmci: Use HWFC when possibleStefan Nilsson XK
HW flow control should not be used for write transfers less then 8 bytes. All other transfers should use HW flow control. ST-Ericsson Linux next: NA ST-Ericsson ID: 398871 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I51044d26cfc7df033852becbbc6e796396dfb45f Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Fredrik Soderstedt <fredrik.soderstedt@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/40191 Reviewed-by: QATOOLS Reviewed-by: QABUILD Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
2012-05-22mmc: mmci: Support MMC_PM_KEEP_POWERUlf Hansson
Add MMC_PM_KEEP_POWER to pm_caps so SDIO clients are able to use this option to prevent power off in suspend. Change-Id: I36df77e66ca8845ceeffb9d5163d4c1e77821b7d Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34918
2012-05-22mmci: add constraints on alignment for SDIOUlf Hansson
Buffers must be 4 bytes aligned due to restrictions that the PL18x FIFO accesses must be done in a 4-byte aligned manner. Enable DMA_REQCTL for SDIO to support write of not 32 bytes aligned sg element lengths. In PIO mode any buffer length can be handled as long as the buffer address is 4 byte aligned. Signed-off-by: Ulf Hansson <(address hidden)> Signed-off-by: Per Forlin <(address hidden)> Signed-off-by: Stefan Nilsson XK <(address hidden)>
2012-05-22mmci: Fix incorrect handling of HW flow control for SDIOUlf Hansson
For data writes smaller <= 8 bytes (only SDIO case), HW flow control was disabled but never re-enabled again. This meant that a following large read request would randomly give buffer overrun errors. Moreover HW flow control is not needed for transfers that fits in the FIFO of PL18x. Thus it is disabled for write operations <= the FIFO size. Signed-off-by: Ulf Hansson <(address hidden)> Signed-off-by: Stefan Nilsson XK <(address hidden)>
2012-05-22mmci: Support non-power-of-two block sizes for ux500v2 variantUlf Hansson
For the ux500v2 variant of the PL18x block, non power of two block sizes are supported. This will make it possible to decrease data overhead for SDIO transfers. Signed-off-by: Stefan Nilsson XK <(address hidden)> Signed-off-by: Ulf Hansson <(address hidden)>
2012-05-01Merge commit 'v3.4-rc5' into android-3.4Colin Cross
2012-04-27Merge commit 'v3.4-rc4' into android-3.4Colin Cross
2012-04-26Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull [GIT PULL] slave-dmaengine fixes from Vinod Koul. * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine/amba-pl08x : reset phychan_hold on terminate all dma: pl330: fix a couple of compilation warnings dma/ste_dma40: fix erroneous comparison dma/ste_dma40: explicitly include regulator consumer header dma40: Improve the logic of stopping logical chan dmaengine: at_hdmac: remove clear-on-read in atc_dostart() dma: mxs-dma: enable channel in device_issue_pending call dmaengine: imx-dma: dont complete descriptor for cyclic dma
2012-04-20mmc: dw_mmc: prevent NULL dereference for dma_opsJaehoon Chung
Now, dma_ops is assumed that use the IDMAC. But if dma_ops is assigned the pdata->dma_ops, we didn't ensure that callback function is defined. If the callback isn't defined, then we should run in PIO mode. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20mmc: unbreak sdhci-esdhc-imx on i.MX25Eric Bénard
This was broken by me in 37865fe91582582a6f6c00652f6a2b1ff71f8a78 ("mmc: sdhci-esdhc-imx: fix timeout on i.MX's sdhci") where more extensive tests would have shown that read or write of data to the card were failing (even if the partition table was correctly read). Signed-off-by: Eric Bénard <eric@eukrea.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Cc: stable <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20mmc: sdhci: refine non-removable card checking for card detectionDaniel Drake
Commit c79396c191bc19 ("mmc: sdhci: prevent card detection activity for non-removable cards") disables card detection where the cards are marked as non-removable. This makes sense, but the implementation detail of calling mmc_card_is_removable() causes some problems, because mmc_card_is_removable() is overloaded with CONFIG_MMC_UNSAFE_RESUME semantics. In the OLPC XO case, we need CONFIG_MMC_UNSAFE_RESUME because our root filesystem is stored on SD, but we also have external SD card slots where we want automatic card detection. Refine the check to only apply to hosts marked as MMC_CAP_NONREMOVABLE, which is defined to mean that the card is *really* nonremovable. This could be revisited in future if we find a way to improve CONFIG_MMC_UNSAFE_RESUME semantics. Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Chuanxiao Dong <chuanxiao.dong@intel.com> [stable@: please apply to 3.3-stable] Cc: stable <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20mmc: dw_mmc: Fix switch from DMA to PIOSeungwon Jeon
When dw_mci_pre_dma_transfer returns failure in some reasons, dw_mci_submit_data will prepare to switch the PIO mode from DMA. After switching to PIO mode, DMA(IDMAC in particular) is still enabled. This makes the corruption in handling interrupt and the driver lock-up. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20mmc: omap_hsmmc: Get rid of of_have_populated_dt() usageRajendra Nayak
of_have_populated_dt() is not expected to be used in drivers but instead only in early platform init code. Drivers on the other hand should rely on dev->of_node or of_match_device(). Besides usage of of_have_populated_dt() also throws up build error as below which was reported by Balaji TK, when omap_hsmmc is built as a module. ERROR: "allnodes" [drivers/mmc/host/omap_hsmmc.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 So get rid of all of_have_populated_dt() usage in omap_hsmmc driver and instead use dev->of_node to make the same dicisions as earlier. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Reported-by: Benoit Cousson <b-cousson@ti.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Rob Herring <rob.herring@calxeda.com> Reviewed-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20mmc: omap_hsmmc: build fix for CONFIG_OF=y and CONFIG_MMC_OMAP_HS=mChris Ball
Commit 46856a68dc ("mmc: omap_hsmmc: Convert hsmmc driver to use device tree") introduced in 3.4-rc1 has a missing semi-colon, causing: drivers/mmc/host/omap_hsmmc.c:1745: error: expected ',' or ';' before 'extern' Reported-by: Russell King <linux@arm.linux.org.uk> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20dma: mxs-dma: enable channel in device_issue_pending callShawn Guo
Enable channel in device_issue_pending call, so that the order between cookie assignment and channel enabling can be ensured naturally. It fixes the mxs gpmi-nand breakage which is caused by the incorrect order of cookie assigning and channel enabling. Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: Huang Shijie <b32955@freescale.com> Tested-by <samgandhi9@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-04-09mmc: sdhci: remove too large timeout warningTorne (Richard Coles)
Some MMC cards specify timeouts that are larger than the highest possible timeout in the host controller. sdhci is the only host controller driver which complains about this; remove the warning to match the behaviour of the other drivers. Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2012-04-05mmc: sdhci-dove: Fix compile error by including module.hAlf Høgemark
This patch fixes a compile error in drivers/mmc/host/sdhci-dove.c by including the linux/module.h file. Signed-off-by: Alf Høgemark <alf@i100.no> Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: Prevent 1.8V switch for SD hosts that don't support UHS modes.Al Cooper
The driver should not try to switch to 1.8V when the SD 3.0 host controller does not have any UHS capabilities bits set (SDR50, DDR50 or SDR104). See page 72 of "SD Specifications Part A2 SD Host Controller Simplified Specification Version 3.00" under "1.8V Signaling Enable". Instead of setting SDR12 and SDR25 in the host capabilities data structure for all V3.0 host controllers, only set them if SDR104, SDR50 or DDR50 is set in the host capabilities register. This will prevent the switch to 1.8V later. Signed-off-by: Al Cooper <acooper@gmail.com> Acked-by: Arindam Nath <arindam.nath@amd.com> Acked-by: Philip Rakity <prakity@marvell.com> Acked-by: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05Revert "mmc: sdhci-pci: Add MSI support"Chris Ball
This reverts commit e6039832bed9a9b967796d7021f17f25b625b616. There are reports of MSI breaking SDHCI on multiple chipsets (JMicron and O2Micro, at least), so this should be reverted until we come up with a whitelist or something. Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05Revert "mmc: sdhci-pci: add quirks for broken MSI on O2Micro controllers"Chris Ball
This reverts commit c16e981b2fd9455af670a69a84f4c8cf07e12658, because it's no longer useful once MSI support is reverted. Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: omap_hsmmc: fix module re-insertionBalaji T K
OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset. Adding the offset to platform_device resource structure increments the start address for every insmod operation. MMC command fails on re-insertion as module due to incorrect register base. Fix this by updating the ioremap base address only. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: omap_hsmmc: convert to module_platform_driverFelipe Balbi
This will delete some boilerplate code, no functional changes. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: omap_hsmmc: make it behave well as a moduleFelipe Balbi
If we put probe() on __init section, that will never work for multiple module insertions/removals. In order to make it work properly, move probe to __devinit section and use platform_driver_register() instead of platform_driver_probe(). Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: omap_hsmmc: trivial cleanupsFelipe Balbi
A bunch of non-functional cleanups to the omap_hsmmc driver. It basically decreases indentation level, drop unneded dereferences and drop unneded accesses to the platform_device structure. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: omap_hsmmc: context save after enabling runtime pmBalaji T K
Call context save api after enabling runtime pm to make sure that register access in context save api happens with clk enabled. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: omap_hsmmc: use runtime put sync in probe error patchBalaji T K
pm_runtime_put_sync instead of autosuspend pm runtime API because iounmap(host->base) follows immediately. Reported-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sdhci-pci: add quirks for broken MSI on O2Micro controllersManuel Lauss
MSI on my O2Micro OZ600 SD card reader is broken. This patch adds a quirk to disable MSI on these controllers. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sh_mmcif: Simplify calculation of mmc->f_minSimon Horman
There is no need to tune mmc->f_min to a value near 400kHz as the MMC core begins testing frequencies at 400kHz regardless of the value of mmc->f_min. As suggested by Guennadi Liakhovetski. Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Tested-by: Cao Minh Hiep <hiepcm@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sh_mmcif: mmc->f_max should be half of the bus clockSimon Horman
mmc->f_max should be half of the bus clock. And now that mmc->f_max is not equal to the bus clock the latter should be used directly to calculate mmc->f_min. Cc: Magnus Damm <magnus.damm@gmail.com> Tested-by: Cao Minh Hiep <hiepcm@gmail.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sh_mmcif: double clock speedSimon Horman
Correct an off-by one error when calculating the clock divisor in cases where the host clock is a power of two of the target clock. Previously the divisor was one greater than the correct value in these cases leading to the clock being set at half the desired speed. Thanks to Guennadi Liakhovetski for working with me on the logic for this change. Tested-by: Cao Minh Hiep <hiepcm@gmail.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: atmel-mci: add support for odd clock dividersLudovic Desroches
Add an odd clock divider capability available from v5xx. It also involves changing the clock divider calculation, and changing the switch-case statement to use top-down fallthrough. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: atmel-mci: r/w proof capability only available since v2xxLudovic Desroches
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: atmel-mci: correct data timeout computationLudovic Desroches
The HSMCI operates at a rate of up to Master Clock divided by two. Moreover previous calculation can cause overflows and so wrong timeouts. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sdhci-s3c: Enable runtime power managementMark Brown
Since most of the work is already done by the core we just need to add runtime suspend methods and tell the PM core that runtime PM is enabled for this device. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sdhci-s3c: Use CONFIG_PM_SLEEP to ifdef system suspendMark Brown
This matches current best practice as one can have runtime PM enabled without system sleep and CONFIG_PM is defined for both. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sdhci-s3c: use devm_ functionsJulia Lawall
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. By using devm_ioremap, it also removes a potential memory leak, because there was no call to iounmap in the probe function. The call to platform_get_resource was moved just to make it closer to the place where its result it used. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05mmc: sdhci-s3c: Keep a copy of platform data and use itThomas Abraham
The platform data is copied into driver's private data and the copy is used for all access to the platform data. This simpifies the addition of device tree support for the sdhci-s3c driver. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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