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path: root/drivers/mmc
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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: init sysfs attr to fix lockdep warningsRabin Vincent
BUG: key df230ba4 not in .data! ------------[ cut here ]------------ WARNING: at kernel/lockdep.c:2885 sysfs_add_file_mode+0x4c/0xb0() Modules linked in: [<c01a36ac>] (unwind_backtrace+0x0/0xec) from [<c01c90a0>] (warn_slowpath_common+0x4c/0x64) [<c01c90a0>] (warn_slowpath_common+0x4c/0x64) from [<c01c90d0>] (warn_slowpath_null+0x18/0x1c) [<c01c90d0>] (warn_slowpath_null+0x18/0x1c) from [<c02c5ad8>] (sysfs_add_file_mode+0x4c/0xb0) [<c02c5ad8>] (sysfs_add_file_mode+0x4c/0xb0) from [<c04c1df4>] (mmc_add_disk+0xb8/0x154) [<c04c1df4>] (mmc_add_disk+0xb8/0x154) from [<c04c1f78>] (mmc_blk_probe+0xe8/0x138) [<c04c1f78>] (mmc_blk_probe+0xe8/0x138) from [<c04b72d4>] (mmc_bus_probe+0x18/0x1c) [<c04b72d4>] (mmc_bus_probe+0x18/0x1c) from [<c03f2c90>] (really_probe+0x98/0x148) [<c03f2c90>] (really_probe+0x98/0x148) from [<c03f2d88>] (driver_probe_device+0x48/0x60) [<c03f2d88>] (driver_probe_device+0x48/0x60) from [<c03f21e8>] (bus_for_each_drv+0x44/0x74) [<c03f21e8>] (bus_for_each_drv+0x44/0x74) from [<c03f2f08>] (device_attach+0x78/0xa4) [<c03f2f08>] (device_attach+0x78/0xa4) from [<c03f2020>] (bus_probe_device+0x24/0x40) [<c03f2020>] (bus_probe_device+0x24/0x40) from [<c03f0ff0>] (device_add+0x174/0x2b4) [<c03f0ff0>] (device_add+0x174/0x2b4) from [<c04b7500>] (mmc_add_card+0x138/0x188) [<c04b7500>] (mmc_add_card+0x138/0x188) from [<c04b91bc>] (mmc_attach_mmc+0x108/0x178) [<c04b91bc>] (mmc_attach_mmc+0x108/0x178) from [<c04b5c08>] (mmc_rescan_try_freq+0x5c/0x7c) [<c04b5c08>] (mmc_rescan_try_freq+0x5c/0x7c) from [<c04b67ec>] (mmc_rescan+0x1c8/0x20c) [<c04b67ec>] (mmc_rescan+0x1c8/0x20c) from [<c01e250c>] (process_one_work+0x2ac/0x4c8) [<c01e250c>] (process_one_work+0x2ac/0x4c8) from [<c01e29f8>] (worker_thread+0x144/0x234) [<c01e29f8>] (worker_thread+0x144/0x234) from [<c01e8280>] (kthread+0x80/0x88) [<c01e8280>] (kthread+0x80/0x88) from [<c019dc88>] (kernel_thread_exit+0x0/0x8) ---[ end trace 90d62d7618c6b90e ]--- Change-Id: I123e84b08e085d1b562674533417cb43f295095d Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> ST-Ericsson ID: 413918 ST-Ericsson Linux next: NA ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I216974bfa1323d3a390ee8e8acc029c13a9525f5 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/47172 Tested-by: Rabin VINCENT <rabin.vincent@stericsson.com> Reviewed-by: QABUILD Reviewed-by: Johan RUDHOLM <johan.rudholm@stericsson.com> Reviewed-by: Rabin VINCENT <rabin.vincent@stericsson.com>
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: Add old-style pwr/perm boot part lockingJohan Rudholm
Add backwards-compatible sysfs nodes for locking the boot partitions power and permanently read-only. This is done by writing "pwr_ro" or "perm_ro" to /sys/block/mmcblkXbootY/ro_lock ST-Ericsson ID: 344197 ST-Ericsson FOSS-OUT ID: Trivial ST-Ericsson Linux next: NA Change-Id: Ibe1874bbb3b1b6ce9f7955537b5e083e97f69d11 Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/44842 Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
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: Minimize resume-time by deferring resumeUlf Hansson
Typically an sd/mmc card takes around 200 - 1100 ms to initialize when the power to the card has been cut, which is what happens during a suspend/resume sequence. All device's resume time adds up to the total kernel resume time. Some use cases requires the kernel to be resumed fast, to be able to meet deadlines. One use case example is WLAN SOFT_AP, but there are certainly more. This patch schedules a delayed work to do a deferred resume of the mmc host, if the bus holds a card of SD or MMC type. The reason for not supporting SDIO and SDcombo cards at this stage, is because the SDIO API is synchronus, which complicates request locking mechanism when waiting for a deferred resume to be completed. While waiting for a deferred resume to be completed, detect works are prevented from doing a new rescan. If a mmcblk request arrives, the deferred resume will be synced immediately. The deferred resume is scheduled 3000 ms after the resume request arrived. The idea behind this timer value is to let the mmc host being able to accept a new suspend request before it has been deferred resumed and thus not increase the resume to suspend time if not really needed. Change-Id: I7e97e59c8709cf5d8e3c76478771ddf6062a54ec Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/39692
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
2012-05-22mmc: mmc_test: add 4 byte alignment testsPer Forlin
Add test cases to verify alignment with 4 bytes and 32 bytes for sg element lengths and memory addresses. These tests were added to investigate DMA constraints when transferring buffers that are not aligned with 32 bytes. ST-Ericsson ID: 363565 ST-Ericsson FOSS-OUT ID: Trivial ST-Ericsson Linux next: NA Change-Id: I6363a018647f22e5d69920af2cb30dfe2b2a699e Signed-off-by: Per Forlin <per.forlin@stericsson.com> Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34362 Reviewed-by: QATOOLS Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
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
2012-04-27Revert "mmc: Set suspend/resume bus operations if CONFIG_PM_RUNTIME is used"Colin Cross
This reverts commit 2f4735e514e3e3ed9e55a8cd3c2c90690ee44b90.
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: core: Do not pre-claim host in suspendUlf Hansson
Since SDIO drivers may want to do some SDIO operations in their suspend callback functions, we must not keep the host claimed when calling them. Daniel Drake reported that libertas_sdio encountered a deadlock in its suspend function. Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Tested-by: Daniel Drake <dsd@laptop.org> [stable@: please apply to 3.2-stable and 3.3-stable] Cc: stable <stable@vger.kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
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: cd-gpio: Include header to pickup exported symbol prototypesH Hartley Sweeten
Include the linux/mmc/cd-gpio.h header to pickup the prototypes for the two exported symbols. This quiets the sparse warnings: warning: symbol 'mmc_cd_gpio_request' was not declared. Should it be static? warning: symbol 'mmc_cd_gpio_free' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Venkatraman S <svenkatr@ti.com> 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: remove MMC bus legacy suspend/resume methodChuanxiao Dong
MMC bus is using legacy suspend/resume method, which is not compatible if runtime pm callbacks are used. In this scenario, MMC bus suspend/resume callbacks cannot be called when system entering S3. So change to use the new defined dev_pm_ops for system sleeping mode. Tested on AM335x Platform. Solves major issue/crash reported at http://www.mail-archive.com/linux-omap@vger.kernel.org/msg65425.html Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Tested-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Ulf Hansson <ulf.hansson@stericsson.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>
2012-04-20mmc: fixes for eMMC v4.5 sanitize operationAdrian Hunter
eMMC v4.5 sanitize operation erases all copies of unmapped data. However trim or erase operations must be used first to unmap the required sectors. That was not being done. Fixes apply to linux 3.2 on. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20mmc: fixes for eMMC v4.5 discard operationAdrian Hunter
eMMC v4.5 discard operation is significantly different from the existing trim operation because it is not guaranteed to work with the new sanitize operation. Consequently mmc_can_trim() is separated from mmc_can_discard(). Also the new discard operation does not result in the sectors being set to all-zeros, so discard_zeroes_data must not be set. In addition, the new discard has the same timeout as trim, but from v4.5 trim is defined to use the hc timeout. The timeout calculation is adjusted accordingly. Fixes apply to linux 3.2 on. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> 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>
2012-04-09mmc: Set suspend/resume bus operations if CONFIG_PM_RUNTIME is usedDmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2012-04-09mmc: block: Improve logging of handling emmc timeoutsKen Sumrall
Add some logging to make it clear just how the emmc timeout was handled. Change-Id: Id33fd28d8b9778dc4e85db829e2637a328eddab4 Signed-off-by: Ken Sumrall <ksumrall@android.com>
2012-04-09mmc: core: host: only use wakelock for detect workColin Cross
There is no need to take a wakelock for delayed lazy disable work, it will be cancelled in the suspend handler and force disabled. Only take the wakelock when the detect work is queued, and make sure to drop the wakelock if the work is cancelled. Change-Id: I1e507a5f98848954ea21d45e23b6192c3132a349 Signed-off-by: Colin Cross <ccross@android.com>
2012-04-09mmc: Fix pm_notifier obeying deferred resumeDmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2012-04-09mmc: Add "ignore mmc pm notify" functionalityDmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2012-04-09mmc: sdio: Fix enable_hs and enable_wide in sdio_reset_comm()Dmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2012-04-09mmc: sdio: Add high speed support to sdio_reset_comm()Daniel Chen
Signed-off-by: San Mehat <san@google.com>
2012-04-09mmc: sdio: Claim host in sdio_reset_comm()Dmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2012-04-09mmc: mmcblk: Add support for deferred SD bus resumeSan Mehat
Signed-off-by: San Mehat <san@google.com> mmc: card: Add MMC_BLOCK_DEFERRED_RESUME option to Kconfig Signed-off-by: San Mehat <san@google.com>
2012-04-09mmc: core: Add deferred bus resume policy.San Mehat
A card driver can now specify that the underlying bus should *not* auto-resume with the rest of the system. This is useful for reducing resume latency as well as saving power when the card driver is not using the bus. In the future, we'll add support for manual suspend Signed-off-by: San Mehat <san@google.com>
2012-04-09mmc: core: Hold a wake lock accross delayed work + mmc rescanSan Mehat
Signed-off-by: San Mehat <san@android.com> mmc: core: Rework mmc_delayed_work wakelock so that the wakelock is only extended if a card is added or removed. Signed-off-by: San Mehat <san@google.com>
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