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2014-04-09Merge tag 'mmc-updates-for-3.15-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc Pull MMC updates from Chris Ball: "MMC highlights for 3.15: Core: - CONFIG_MMC_UNSAFE_RESUME=y is now default behavior - DT bindings for SDHCI UHS, eMMC HS200, high-speed DDR, at 1.8/1.2V - Add GPIO descriptor based slot-gpio card detect API Drivers: - dw_mmc: Refactor SOCFPGA support as a variant inside dw_mmc-pltfm.c - mmci: Support HW busy detection on ux500 - omap: Support MMC_ERASE - omap_hsmmc: Support MMC_PM_KEEP_POWER, MMC_PM_WAKE_SDIO_IRQ, (a)cmd23 - rtsx: Support pre-req/post-req async - sdhci: Add support for Realtek RTS5250 controllers - sdhci-acpi: Add support for 80860F16, fix 80860F14/SDIO card detect - sdhci-msm: Add new driver for Qualcomm SDHCI chipset support - sdhci-pxav3: Add support for Marvell Armada 380 and 385 SoCs" * tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (102 commits) mmc: sdhci-acpi: Intel SDIO has broken card detect mmc: sdhci-pxav3: add support for the Armada 38x SDHCI controller mmc: sdhci-msm: Add platform_execute_tuning implementation mmc: sdhci-msm: Initial support for Qualcomm chipsets mmc: sdhci-msm: Qualcomm SDHCI binding documentation sdhci: only reprogram retuning timer when flag is set mmc: rename ARCH_BCM to ARCH_BCM_MOBILE mmc: sdhci: Allow for irq being shared mmc: sdhci-acpi: Add device id 80860F16 mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14 mmc: slot-gpio: Add GPIO descriptor based CD GPIO API mmc: slot-gpio: Split out CD IRQ request into a separate function mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbers Revert "dts: socfpga: Add support for SD/MMC on the SOCFPGA platform" mmc: sdhci-spear: use generic card detection gpio support mmc: sdhci-spear: remove support for power gpio mmc: sdhci-spear: simplify resource handling mmc: sdhci-spear: fix platform_data usage mmc: sdhci-spear: fix error handling paths for DT mmc: sdhci-bcm-kona: fix build errors when built-in ...
2014-04-07mmc: sdhci-acpi: Intel SDIO has broken card detectAdrian Hunter
Intel SDIO has broken card detect so add a quirk to reflect that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-04-05Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM changes from Russell King: - Perf updates from Will Deacon: - Support for Qualcomm Krait processors (run perf on your phone!) - Support for Cortex-A12 (run perf stat on your FPGA!) - Support for perf_sample_event_took, allowing us to automatically decrease the sample rate if we can't handle the PMU interrupts quickly enough (run perf record on your FPGA!). - Basic uprobes support from David Long: This patch series adds basic uprobes support to ARM. It is based on patches developed earlier by Rabin Vincent. That approach of adding hooks into the kprobes instruction parsing code was not well received. This approach separates the ARM instruction parsing code in kprobes out into a separate set of functions which can be used by both kprobes and uprobes. Both kprobes and uprobes then provide their own semantic action tables to process the results of the parsing. - ARMv7M (microcontroller) updates from Uwe Kleine-König - OMAP DMA updates (recently added Vinod's Ack even though they've been sitting in linux-next for a few months) to reduce the reliance of omap-dma on the code in arch/arm. - SA11x0 changes from Dmitry Eremin-Solenikov and Alexander Shiyan - Support for Cortex-A12 CPU - Align support for ARMv6 with ARMv7 so they can cooperate better in a single zImage. - Addition of first AT_HWCAP2 feature bits for ARMv8 crypto support. - Removal of IRQ_DISABLED from various ARM files - Improved efficiency of virt_to_page() for single zImage - Patch from Ulf Hansson to permit runtime PM callbacks to be available for AMBA devices for suspend/resume as well. - Finally kill asm/system.h on ARM. * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (89 commits) dmaengine: omap-dma: more consolidation of CCR register setup dmaengine: omap-dma: move IRQ handling to omap-dma dmaengine: omap-dma: move register read/writes into omap-dma.c ARM: omap: dma: get rid of 'p' allocation and clean up ARM: omap: move dma channel allocation into plat-omap code ARM: omap: dma: get rid of errata global ARM: omap: clean up DMA register accesses ARM: omap: remove almost-const variables ARM: omap: remove references to disable_irq_lch dmaengine: omap-dma: cleanup errata 3.3 handling dmaengine: omap-dma: provide register read/write functions dmaengine: omap-dma: use cached CCR value when enabling DMA dmaengine: omap-dma: move barrier to omap_dma_start_desc() dmaengine: omap-dma: move clnk_ctrl setting to preparation functions dmaengine: omap-dma: improve efficiency loading C.SA/C.EI/C.FI registers dmaengine: omap-dma: consolidate clearing channel status register dmaengine: omap-dma: move CCR buffering disable errata out of the fast path dmaengine: omap-dma: provide register definitions dmaengine: omap-dma: consolidate setup of CCR dmaengine: omap-dma: consolidate setup of CSDP ...
2014-04-04Merge branches 'amba', 'fixes', 'misc', 'mmci', 'unstable/omap-dma' and ↵Russell King
'unstable/sa11x0' into for-next
2014-04-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual rocket science -- mostly documentation and comment updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: sparse: fix comment doc: fix double words isdn: capi: fix "CAPI_VERSION" comment doc: DocBook: Fix typos in xml and template file Bluetooth: add module name for btwilink driver core: unexport static function create_syslog_header mmc: core: typo fix in printk specifier ARM: spear: clean up editing mistake net-sysfs: fix comment typo 'CONFIG_SYFS' doc: Insert MODULE_ in module-signing macros Documentation: update URL to hfsplus Technote 1150 gpio: update path to documentation ixgbe: Fix format string in ixgbe_fcoe. Kconfig: Remove useless "default N" lines user_namespace.c: Remove duplicated word in comment CREDITS: fix formatting treewide: Fix typo in Documentation/DocBook mm: Fix warning on make htmldocs caused by slab.c ata: ata-samsung_cf: cleanup in header file idr: remove unused prototype of idr_free()
2014-03-29mmc: sdhci-pxav3: add support for the Armada 38x SDHCI controllerMarcin Wojtas
The SDHCI unit used on the Armada 380 and 385 Marvell SoC is similar to the PXAv3 unit. The only difference is that on Armada 38x, the PXAv3 unit accesses memory through MBus windows which must be configured prior to using the device. Without this, DMA would not work. In order to achieve this, the sdhci-pxav3 driver is extended with an additional compatible string "marvell,armada-380-sdhci". When this compatible string is used, the MBus windows are initialized in a way that is identical to what all other DMA-capable drivers for Marvell EBU platforms do. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-29workqueue: remove deprecated WQ_NON_REENTRANTZhangZhen
Tejun Heo has made WQ_NON_REENTRANT useless in the dbf2576e37 ("workqueue: make all workqueues non-reentrant"). So remove its usages and definition. This patch doesn't introduce any behavior changes. tj: minor description updates. Signed-off-by: ZhangZhen <zhenzhang.zhang@huawei.com> Sigend-off-by: Tejun Heo <tj@kernel.org> Acked-by: James Chapman <jchapman@katalix.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-03-26mmc: sdhci-msm: Add platform_execute_tuning implementationGeorgi Djakov
This patch adds implementation for platform specific tuning in order to support HS200 bus speed mode on Qualcomm SDHCI controller. Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org> Signed-off-by: Georgi Djakov <gdjakov@mm-sol.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-26mmc: sdhci-msm: Initial support for Qualcomm chipsetsGeorgi Djakov
This platform driver adds the initial support of Secure Digital Host Controller Interface compliant controller found in Qualcomm chipsets. Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org> Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Georgi Djakov <gdjakov@mm-sol.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-25sdhci: only reprogram retuning timer when flag is setArend van Spriel
When the host->tuning_count is zero it means that the retuning is disabled. This is checked on the first run of sdhci_execute_tuning() by the if statement below: if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count && (host->tuning_mode == SDHCI_TUNING_MODE_1)) { So only when tuning_count is non-zero it will set the host flag SDHCI_USING_RETUNING_TIMER. The else statement is only for re-programming the timer, which means that flag must be set. Because that is not checked the else statement is executed in the first run when tuning_count is zero. This was seen on a host controller which indicated SDHCI_TUNING_MODE_1 (0) and tuning_count being zero. Suspect that (one of) these registers is not properly set. Signed-off-by: Arend van Spriel <arend@broadcom.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-24mmc: rename ARCH_BCM to ARCH_BCM_MOBILEChristian Daudt
Currently ARCH_BCM has been used for Broadcom Mobile V7 based SoCs. In order to allow other Broadcom SoCs to also use mach-bcm directory and files, this patch renames the original ARCH_BCM to ARCH_BCM_MOBILE, and uses ARCH_BCM to define any Broadcom chip residing in mach-bcm directory. Signed-off-by: Christian Daudt <bcm@fixthebug.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-17mmc: sdhci: Allow for irq being sharedAdrian Hunter
If the SDHCI irq is shared with another device then the interrupt handler can get called while SDHCI is runtime suspended. That is harmless but the warning message is not useful so remove it. Also returning IRQ_NONE is more appropriate. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-17mmc: sdhci-acpi: Add device id 80860F16Adrian Hunter
Add ACPI HID 80860F16 as a host controller for a SD card. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-17mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14Adrian Hunter
Some 80860F14 devices do not support card detect and must rely completely on GPIO. Presently the card detect GPIO is used only to wake-up from runtime suspend. Change to using mmc_gpioid_request_cd() which will cause the SDHCI driver to prefer the GPIO to the host controller's native card detect. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-17mmc: slot-gpio: Add GPIO descriptor based CD GPIO APIAdrian Hunter
Add functions to request a CD GPIO using the GPIO descriptor API. Note that the new request function is paired with mmc_gpiod_free_cd() not mmc_gpio_free_cd(). Note also that it must be called prior to mmc_add_host() otherwise the caller must also call mmc_gpiod_request_cd_irq(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-17mmc: slot-gpio: Split out CD IRQ request into a separate functionAdrian Hunter
In preparation for adding a descriptor-based CD GPIO API, split out CD IRQ request into a separate function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-17mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbersAdrian Hunter
In preparation for adding a descriptor-based CD GPIO API, switch from recording GPIO numbers to recording GPIO descriptors. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-10mmc: core: typo fix in printk specifierAlexander Shiyan
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-03-04mmc: sdhci-spear: use generic card detection gpio supportRussell King
sdhci has support for using GPIOs for card detection. If we have a GPIO specified, we can use that directly, without needing our own interrupt handler. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: sdhci-spear: remove support for power gpioRussell King
None of this code is currently used: there are no definitions of struct sdhci_plat_data in arch/arm, neither are there any DT properties which use card_power_gpio/power_active_high/power_always_enb. In any case, slot power control should be rigged up via vmmc and the regulator subsystem in the DT case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: sdhci-spear: simplify resource handlingRussell King
Use devm_ioremap_resource() to simplify iomem resource handling in the probe path. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: sdhci-spear: fix platform_data usageRussell King
sdhci-spear is unsafe should a probe fail or defer, since it overwrites the platform_data with its own driver-private data. It's trivial to fix as SDHCI allows for driver-private data to be appended to its own structure - we just need to arrange the code to allow this. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: sdhci-spear: fix error handling paths for DTRussell King
Fix the error handling paths for DT and simplify using the devm_* API for clk_get(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: sdhci-bcm-kona: fix build errors when built-inRussell King
`sdhci_bcm_kona_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.exit.text' of drivers/built-in.o Fixes: 058feb53666f ("mmc: sdhci-bcm-kona: make linker-section warning go away") Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Markus Mayer <markus.mayer@linaro.org> Acked-by: Matt Porter <mporter@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: add autocmd23 supportBalaji T K
Add support for autocmd23 support Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: add cmd23 supportBalaji T K
Add set block count command support for close ended multiblock read/write. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: split dma setupBalaji T K
split start dma function into setup and start dma to keep track of host_cookie when cmd23 support is enabled along with async request. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: fix request done for sbc error caseBalaji T K
mrq is not populated for set block count(cmd23) command. Use block read/write mmc_commond pointer for request done and avoid NULL pointer access in error case for sbc (cmd23). Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: save clock rate to use in interrupt contextBalaji T K
clk_get_rate throws DEBUG_LOCKS_WARN_ON(in_interrupt()) warning if called from interrupt context. use cached clock rate in set_data_timeout, so that set_data_timeout can be called from interrupt context. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: remove redundant reset doneBalaji T K
Remove redundant reset done check since omap hwmod layer ensures IP reset. Signed-off-by: Balaji T K <balajitk@ti.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: fix return error code for of_get_hsmmc_pdataBalaji T K
of_get_hsmmc_pdata returns a pointer, returning NULL is invalid, return ERR_PTR for error case. Signed-off-by: Balaji T K <balajitk@ti.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: remove pbias workaroundBalaji T K
remove pbias workaround Signed-off-by: Balaji T K <balajitk@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Florian Vaussard <florian.vaussard@epfl.ch> Tested-by: Stefan Roese <sr@denx.de> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: adapt hsmmc to use pbias regulatorBalaji T K
In DT case, PBAIS registers are programmed via regulator, use regulator APIs to control PBIAS. Signed-off-by: Balaji T K <balajitk@ti.com> Tested-by: Florian Vaussard <florian.vaussard@epfl.ch> Tested-by: Stefan Roese <sr@denx.de> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: handle vcc and vcc_aux independentlyBalaji T K
handle vcc and vcc_aux independently to reduce indent. Signed-off-by: Balaji T K <balajitk@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Florian Vaussard <florian.vaussard@epfl.ch> Tested-by: Stefan Roese <sr@denx.de> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: use devm_regulator APIBalaji T K
Use devm_regulator API, while at it use devm_regulator_get_optional for optional vmmc_aux supply Signed-off-by: Balaji T K <balajitk@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Florian Vaussard <florian.vaussard@epfl.ch> Tested-by: Stefan Roese <sr@denx.de> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: support more DT propertiesDaniel Mack
This should probably be done implicitly through mmc_of_parse(), but that doesn't play well along with the multi-slot model the hsmmc driver features. Hence, for now, do it manually. The properties are already documented in Documentation/devicetree/bindings/mmc/mmc.txt. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: Add support for quirky omap3 hsmmc controllerNishanth Menon
When device is booted using devicetree, platforms impacted by Erratum 2.1.1.128 is not detected easily in the mmc driver. This erratum indicates that the module cannot do multi-block transfers. Platforms such as LDP which use OMAP3 ES revision prior to ES3.0 are impacted by this. Provide a new compatible property "ti,omap3-pre-es3-hsmmc" to allow driver to determine if driver needs to implement quirks associated with the specific module version (primarily because the IP revision information is not sufficient for the same). Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-04mmc: omap_hsmmc: remove a duplicative testDan Carpenter
Static checkers complain that testing for both "next" and "!next" is duplicative. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: dw_mmc: fix possible build errorFelipe Balbi
Fix the following build errors: drivers/mmc/host/dw_mmc-k3.c: In function ‘dw_mci_k3_suspend’: drivers/mmc/host/dw_mmc-k3.c:58:2: error: implicit declaration of function ‘dw_mci_suspend’ [-Werror=implicit-function-declaration] ret = dw_mci_suspend(host); ^ drivers/mmc/host/dw_mmc-k3.c: In function ‘dw_mci_k3_resume’: drivers/mmc/host/dw_mmc-k3.c:76:2: error: implicit declaration of function ‘dw_mci_resume’ [-Werror=implicit-function-declaration] return dw_mci_resume(host); ^ drivers/mmc/host/dw_mmc-k3.c: At top level: drivers/mmc/host/dw_mmc-k3.c:53:12: warning: ‘dw_mci_k3_suspend’ defined but not used [-Wunused-function] static int dw_mci_k3_suspend(struct device *dev) ^ drivers/mmc/host/dw_mmc-k3.c:65:12: warning: ‘dw_mci_k3_resume’ defined but not used [-Wunused-function] static int dw_mci_k3_resume(struct device *dev) ^ Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: sdhci-s3c: Do not allow frequencies higher than requestedTomasz Figa
This patch modifies sdhci_s3c_consider_clock() to fail if bus clock being considered can not provide frequency lower or equal requested, instead of returning the lowest supported. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by; Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: sdhci-s3c: Fix handling of bus clock switchingTomasz Figa
Currently the driver assumes at probe that controller is configured for last valid enumerated bus clock. This assumption is completely wrong, as there is no way to ensure such configuration until the hardware gets first configured (by calling sdhci_s3c_set_clock()). This patch modifies the driver to set current clock at probe to unknown state (represented by negative value) and make sure that the hardware gets actually configured to selected clock in sdhci_s3c_set_clock(). Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by; Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: sdhci-s3c: Simplify min/max clock calculationTomasz Figa
This patch reimplements functions calculating minimum and maximum clock rates to leverage clock rate cache introduced by previous patches. In addition, the calculation is simplified to just comparing input clock rates (max case) or input clock rates divided by maximum divisor (min case), which is basically what the original code did, but with much more unnecessary work. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by; Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: sdhci-s3c: Use correct condition to check for clock presenceTomasz Figa
IS_ERR() must be used to make sure that not a valid clock was returned by clk_get() and company. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by; Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: sdhci-s3c: Cache bus clock ratesTomasz Figa
To fix scheduling while atomic happening in sdhci_s3c_set_clock() caused by calling clk_get_rate() that might sleep, this patch modifies the driver to cache rates of all bus clocks at probe time and then only use those cache values. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by; Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-03-03mmc: sdhci-s3c: Use shifts to divide by powers of twoTomasz Figa
Current implementation of sdhci_s3c_consider_clock() is highly inefficient due to multiple integer divisions by variable performed in a loop. Since only divisors that are powers of two are considered, this patch replaces them with respective shifts, removing all the integer divisions. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by; Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-02-26mmc: dw_mmc: Add support for SOCFPGA's platform specific implementationDinh Nguyen
Like the rockchip, Altera's SOCFPGA platform specific implementation of the dw_mmc driver requires using the HOLD register for SD commands. This patch renames dw_mci_rockchip_prepare_command to dw_mci_pltfm_prepare_command so that SOCFPGA and Rockchip can use it. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-02-26mmc: dw_mmc-socfpga: Remove the SOCFPGA specific platform for dw_mmcDinh Nguyen
It turns now that the only really platform specific code that is needed for SOCFPGA is using the SDMMC_CMD_USE_HOLD_REG in the prepare_command function. Since the Rockchip already has this functionality, re-use the code that is already in dw_mmc-pltfm.c. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-02-25mmc: dw_mmc: Fix NULL pointer dereferenceSachin Kamat
If mrq->sbc is not NULL but data->stop happens to be NULL, it will lead to NULL pointer dereferencing. Avoid this by having a NULL check for data->stop. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-02-25mmc: dw_mmc: Add missing descriptionSachin Kamat
Commit 0976f16d ("mmc: dw_mmc: add support tuning scheme") introduced the execute_tuning hook but did not add its description for kernel docs. Update the same. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <chris@printf.net>
2014-02-25mmc: sdhci-dove: Remove redundant of_match_ptrSachin Kamat
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
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