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2013-06-27mmc: mxcmmc: handle mmc_of_parse() errors during probeSimon Baatz1-1/+3
Signed-off-by: Simon Baatz <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-27mmc: tmio-mmc: handle mmc_of_parse() errors during probeSimon Baatz1-1/+3
Signed-off-by: Simon Baatz <[email protected]> Acked-by: Guennadi Liakhovetski <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-27mmc: sh_mmcif: handle mmc_of_parse() errors during probeSimon Baatz1-1/+6
Signed-off-by: Simon Baatz <[email protected]> Acked-by: Guennadi Liakhovetski <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-27mmc: return mmc_of_parse() errors to callerSimon Baatz1-5/+25
In addition to just logging errors encountered during DT parsing or allocating GPIO slots for CD/WP, mmc_of_parse() now returns with an error. In particular, this is needed if the GPIO allocation may return EPROBE_DEFER. Signed-off-by: Simon Baatz <[email protected]> Reviewed-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-27mmc: jz4740: Use clk_prepare_enable/clk_disable_unprepareLars-Peter Clausen1-2/+2
In preparation to switching the jz4740 clk driver to the common clk framework, update the clk enable/disable calls to clk_prepare_enable/clk_disable_unprepare. Signed-off-by: Lars-Peter Clausen <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-24msm_sdcc: Convert to clk_prepare/unprepareStephen Boyd1-1/+13
Add calls to clk_prepare and unprepare so that MSM can migrate to the common clock framework. Cc: Chris Ball <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Signed-off-by: David Brown <[email protected]>
2013-06-20Merge tag 'davinci-for-v3.11/soc-v2' of ↵Arnd Bergmann1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc From Sekhar Nori: DaVinci SoC changes for v3.11 This pull request moves DaVinci EDMA library to arch/arm/common so it can be used by OMAP based AM335x. This is a temporary step until all drivers are converted to use the dmaengine driver in drivers/dma/edma.c. Several drivers like SPI, MMC/SD have already been converted. Some like audio are pending. The other two patches in the pull request are cleanup in nature. * tag 'davinci-for-v3.11/soc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: ARM: edma: remove unused transfer controller handlers ARM: davinci: move private EDMA API to arm/common ARM: davinci: remove __init atrribute from function declaration Signed-off-by: Arnd Bergmann <[email protected]>
2013-06-18ARM: davinci: move private EDMA API to arm/commonMatt Porter1-0/+1
Move mach-davinci/dma.c to common/edma.c so it can be used by OMAP (specifically AM33xx) as well. Signed-off-by: Matt Porter <[email protected]> Acked-by: Chris Ball <[email protected]> # davinci_mmc.c Acked-by: Mark Brown <[email protected]> Acked-by: Olof Johansson <[email protected]> [[email protected]: dropped davinci sffsdr changes] Signed-off-by: Sekhar Nori <[email protected]>
2013-06-06mmc: tmio: reset the controller after power-upGuennadi Liakhovetski1-1/+2
This fixes two reported problems: 1. after a system resume the controller isn't functioning until a command runs on a timeout and a controller reset is performed. 2. if a card is ejected during a running write operation, its re-insertion isn't detected. Reported-by: Nguyen Viet Dung <[email protected]> Reported-by: Nguyen Hong Ky <[email protected]> Signed-off-by: Guennadi Liakhovetski <[email protected]> Tested-by: Nguyen Viet Dung <[email protected]> Tested-by: Nguyen Hong Ky <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-06mmc: tmio: fix unbalanced power-on calls with clock-gating enabledGuennadi Liakhovetski2-12/+35
With MMC clock gating enabled the MMC core currently calls MMC host driver's .set_ios() method with .power_mode == MMC_POWER_ON and the clock value set either to 0 or to the target rate. The tmio MMC driver then wrongly translates the latter calls to card slot power-on requests, even when the slot already was on. This patch fixes the driver to avoid needlessly incrementing power-supplying regulator's use count. Signed-off-by: Guennadi Liakhovetski <[email protected]> Tested-by: Laurent Pinchart <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-06mmc: sh_mmcif: don't clear masked interruptsGuennadi Liakhovetski1-1/+2
Masking events on MMCIF means that an occurrence of the masked event won't raise an interrupt, but the event bit will still be set in the interrupt status register. If simultaneously a different event occurs which was enabled, both flags will be set. However, only the unmasked event bit should be cleared in the status register in such a case. Clearing also the masked bit can lead to lost interrupts, which indeed can be observed on the armadillo800eva r8a7740 board with an eMMC chip. The problem has been introduced by the recent "mmc: sh_mmcif: simplify IRQ processing" patch. Fix the problem by only clearing enabled interrupts. Signed-off-by: Guennadi Liakhovetski <[email protected]> Tested-by: Nguyen Viet Dung <[email protected]> Tested-by: Kuninori Morimoto <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-06mmc: tmio: postpone controller reset during resumeGuennadi Liakhovetski2-1/+6
When resuming, the tmio_mmc_host_resume() function is run when the controller might still be powered down. Issuing a reset command to it at that time has no effect. This patch postpones resetting the controller until the first powering-up .set_ios() call. Reported-by: Nguyen Viet Dung <[email protected]> Signed-off-by: Guennadi Liakhovetski <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-06-03PM / Runtime: Rework the "runtime idle" helper routineRafael J. Wysocki2-2/+2
The "runtime idle" helper routine, rpm_idle(), currently ignores return values from .runtime_idle() callbacks executed by it. However, it turns out that many subsystems use pm_generic_runtime_idle() which checks the return value of the driver's callback and executes pm_runtime_suspend() for the device unless that value is not 0. If that logic is moved to rpm_idle() instead, pm_generic_runtime_idle() can be dropped and its users will not need any .runtime_idle() callbacks any more. Moreover, the PCI, SCSI, and SATA subsystems' .runtime_idle() routines, pci_pm_runtime_idle(), scsi_runtime_idle(), and ata_port_runtime_idle(), respectively, as well as a few drivers' ones may be simplified if rpm_idle() calls rpm_suspend() after 0 has been returned by the .runtime_idle() callback executed by it. To reduce overall code bloat, make the changes described above. Tested-by: Mika Westerberg <[email protected]> Tested-by: Kevin Hilman <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> Acked-by: Kevin Hilman <[email protected]> Reviewed-by: Ulf Hansson <[email protected]> Acked-by: Alan Stern <[email protected]>
2013-05-31mmc: sdhci: Add size for caller in init+registerChristian Daudt11-19/+29
Add a param to allow users of sdhci_pltfm to allocate private space in calls to sdhci_pltfm_init+sdhci_pltfm_register. This is implemented in the same way as sdhci does for its users. None of the users have been migrated yet and are passing in zero to retain their private allocation. - todo: migrate clients to using allocation this way - todo: remove priv variable once migration is complete Also removed unused variable in sdhci_pltfm_init fn Signed-off-by: Christian Daudt <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Reviewed-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-pci: support runtime PM for BYT SD cardsAdrian Hunter1-0/+2
Add support for runtime PM for BYT SD cards. Signed-off-by: Adrian Hunter <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-acpi: support runtime PM for ACPI HID 80860F14 SD cardsAdrian Hunter1-1/+63
Enable runtime PM for ACPI HID 80860F14 SD cards, adding support for card detect GPIO. Signed-off-by: Adrian Hunter <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci: add ability to stay runtime-resumed if the card is powered upAdrian Hunter1-1/+34
If card power is dependent on SD bus power then the host controller must not be runtime suspended while the card is powered up. Add the ability to stay runtime-resumed in that case and enable it with a new quirk SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON. Signed-off-by: Adrian Hunter <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: remove unnecessary platform_set_drvdata()Jingoo Han23-40/+0
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d (device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <[email protected]> Acked-by: Sonic Zhang <[email protected]> Acked-by: Seungwon Jeon <[email protected]> Acked-by: Shawn Guo <[email protected]> Acked-by: Adrian Hunter <[email protected]> Acked-by: Haojian Zhuang <[email protected]> Acked-by: Jaehoon Chung <[email protected]> Acked-by: Viresh Kumar <[email protected]> Acked-by: Tony Prisk <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-pltfm: Allow drivers to set quirks2 from platform dataAl Cooper2-1/+5
Signed-off-by: Al Cooper <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: atmel-mci: add CONFIG_PM_SLEEP to suspend/resume functionsJingoo Han1-6/+4
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. drivers/mmc/host/atmel-mci.c:2509:12: warning: 'atmci_suspend' defined but not used [-Wunused-function] drivers/mmc/host/atmel-mci.c:2539:12: warning: 'atmci_resume' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <[email protected]> Acked-by: Ludovic Desroches <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhi/tmio: add DT DMA supportGuennadi Liakhovetski2-14/+19
Add support for initialising DMA from the Device Tree. Signed-off-by: Guennadi Liakhovetski <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhi/tmio: switch to using dmaengine_slave_config()Guennadi Liakhovetski2-17/+41
This removes the deprecated use of the .private member of struct dma_chan and switches the sdhi / tmio mmc driver to using the dmaengine_slave_config() channel configuration method. Signed-off-by: Guennadi Liakhovetski <[email protected]> Acked-by: Samuel Ortiz <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhi/tmio: make DMA filter implementation specificGuennadi Liakhovetski2-10/+11
So far only the SDHI implementation uses TMIO MMC with DMA. That way a DMA channel filter function, defined in the TMIO driver wasn't a problem. However, such a filter function is DMA controller specific. Since the SDHI glue is only running on systems with the SHDMA DMA controller, the filter function can safely be provided by it. Move it into SDHI. Signed-off-by: Guennadi Liakhovetski <[email protected]> Acked-by: Samuel Ortiz <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: dw_mmc: clear IDSTS register when initialize IDMACJoonyoung Shim1-0/+6
If pending interrupt for IDMAC exists when initialize IDMAC, it will call interrupt handler unnecessarily. Signed-off-by: Joonyoung Shim <[email protected]> Acked-by: Seungwon Jeon <[email protected]> Reviewed-by: Jaehoon Chung <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Fix select power class after resumeFredrik Soderstedt1-24/+50
Use the saved values in card->ext_csd when selecting power class. By doing this the power class will be selected even if mmc_init_card is called with oldcard != NULL, which is the case after a suspend/resume. Today ext_csd is NULL if mmc_init_card is called with oldcard != NULL and power class will not be selected. According to the eMMC specification the POWER_CLASS value is reset after power failure, H/W reset assertion and any CMD0 reset. Signed-off-by: Fredrik Soderstedt <[email protected]> Reviewed-by: Johan Rudholm <[email protected]> Acked By: Girish K S <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Restructure and simplify code for mmc sleep|awakeUlf Hansson5-119/+41
The mmc_card_sleep|awake APIs are not being used since the support is already properly encapsulated within the suspend sequence. Sleep|awake command is also specific for eMMC. We remove the sleep|awake bus_ops, the mmc_card_sleep|awake APIs and move the code into the mmc specific core instead. This also includes the mmc ops function, mmc_sleepawake. All releated functions have then become static and we have got far less code to maintain. Additionally this patch also simplifies the code from mmc_sleepawake, since it is only used to put the card to sleep and not awake. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Support aggressive power management for (e)MMC/SDUlf Hansson2-0/+99
Aggressive power management is suitable when saving power is essential. At request inactivity timeout, aka pm runtime autosuspend timeout, the card will be suspended. Once a new request arrives, the card will be re-initalized and thus the first request will suffer from a latency. This latency is card-specific, experiments has shown in general that SD-cards has quite poor initialization time, around 300ms-1100ms. eMMC is not surprisingly far better but still a couple of hundreds of ms has been observed. Except for the request latency, it is important to know that suspending the card will also prevent the card from executing internal house-keeping operations in idle mode. This could mean degradation in performance. To use this feature make sure the request inactivity timeout is chosen carefully. This has not been done as a part of this patch. Enable this feature by using host cap MMC_CAP_AGGRESSIVE_PM and by setting CONFIG_MMC_UNSAFE_RESUME. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: block: Enable runtime pm for mmc blkdeviceUlf Hansson5-14/+57
Once the mmc blkdevice is being probed, runtime pm will be enabled. By using runtime autosuspend, the power save operations can be done when request inactivity occurs for a certain time. Right now the selected timeout value is set to 3 s. Obviously this value will likely need to be configurable somehow since it needs to be trimmed depending on the power save algorithm. For SD-combo cards, we are still leaving the enablement of runtime PM to the SDIO init sequence since it depends on the capabilities of the SDIO func driver. Moreover, when the blk device is being suspended, we make sure the device will be runtime resumed. The reason for doing this is that we want the host suspend sequence to be unaware of any runtime power save operations done for the card in this phase. Thus it can just handle the suspend as the card is fully powered from a runtime perspective. Finally, this patch prepares to make it possible to move BKOPS handling into the runtime callbacks for the mmc bus_ops. Thus IDLE BKOPS can be accomplished. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Add bus_ops for runtime pm callbacksUlf Hansson4-3/+32
SDIO is the only protocol that uses runtime pm for the card device right now. To provide the option for sd and mmc to use runtime pm as well the bus_ops callback are extended with two new functions. One for runtime_suspend and one for runtime_resume. This patch will also implement the callbacks for SDIO to make sure existing functionality is maintained. It also prepares to move away from using the mmc_power_restore_host API, since it is not needed when using runtime PM. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Stop bkops for eMMC only from mmc suspendUlf Hansson2-21/+7
Move mmc suspend specific operations to be executed from the .suspend callback in the mmc bus_ops. This simplifies the mmc_suspend_host function which is supposed to handle nothing but common suspend tasks. Since eMMC can be considered non-removable there are no need to check for ongoing bkops at PM_SUSPEND_PREPARE notification so remove it. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: mxs-mmc: fix error return code in mxs_mmc_probe()Wei Yongjun1-0/+1
Fix to return -ENODEV in the request dma error case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <[email protected]> Reviewed-by: Marek Vasut <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: dw_mmc: fix error return code in dw_mci_probe()Wei Yongjun1-1/+3
Fix to return -ENOMEM in alloc workqueue error case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <[email protected]> Acked-by: Seungwon Jeon <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: card: Adding support for sanitize in eMMC 4.5Maya Erez4-22/+69
The sanitize support is added as a user-app ioctl call, and was removed from the block-device request, since its purpose is to be invoked not via File-System but by a user. This feature deletes the unmap memory region of the eMMC card, by writing to a specific register in the EXT_CSD. unmap region is the memory region that was previously deleted (by erase, trim or discard operation). In order to avoid timeout when sanitizing large-scale cards, the timeout for sanitize operation is 240 seconds. Signed-off-by: Yaniv Gardi <[email protected]> Signed-off-by: Maya Erez <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Re-use code for MMC_CAP2_DETECT_ON_ERR in polling modeUlf Hansson1-3/+2
Previously the MMC_CAP2_DETECT_ON_ERR was invented for detecting slow card removal. In was never a realy good solution and a proper fix has been merged using gpio debouncing instead. We remove this cap in this patch. Although when using polling card detect mode, the code invented for MMC_CAP2_DETECT_ON_ERR is re-used to complete card removal in an earlier phase. There are no need waiting for the polling timeout to elapse in this case. Signed-off-by: Ulf Hansson <[email protected]> Reviewed-by: Kevin Liu <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: omap_hsmmc: Skip platform_get_resource_byname() for dt caseSantosh Shilimkar1-13/+15
MMC driver probe will abort for DT case because of failed platform_get_resource_byname() lookup. Fix it by skipping resource lookup byname for device tree build. Issue is hidden because hwmod populates the IO resources which helps to succeed platform_get_resource_byname() and probe. Signed-off-by: Santosh Shilimkar <[email protected]> Signed-off-by: Balaji T K <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: core: Only execute tuning for SDR50 and SDR104Fredrik Soderstedt2-4/+17
Only execute tuning for sd and sdio devices that are using SDR50 or SDR104. Make sure clock is hold during tuning for sdio devices. Signed-off-by: Fredrik Soderstedt <[email protected]> Acked-by: Johan Rudholm <[email protected]> Acked-by: Ulf Hansson <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: omap_hsmmc: convert to dma_request_slave_channel_compatMatt Porter1-2/+8
Convert dmaengine channel requests to use dma_request_slave_channel_compat(). This supports platforms booting with or without DT populated. Signed-off-by: Matt Porter <[email protected]> Acked-by: Tony Lindgren <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Signed-off-by: Balaji T K <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: omap_hsmmc: Fix the DT pbias workaround for MMC controllers 2 to 5Tony Lindgren1-4/+9
Otherwise SDIO cards won't necessarily work when booted with device tree as we will never power down the SDIO cards. This means the SDIO card reset does not happen which at least some WLAN controllers expect to happen with ifconfig wlan0 down. The PBIAS voltage is only available for the first controller instance, so let's limit the PBIAS workaround to the first controller only. Signed-off-by: Tony Lindgren <[email protected]> Tested-by: Luciano Coelho <[email protected]> Signed-off-by: Balaji T K <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-pci: add more device idsAdrian Hunter1-0/+54
Add three more PCI device ids. Signed-off-by: Adrian Hunter <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-acpi: add more device idsAdrian Hunter1-9/+59
Add three more ACPI HIDs. Also, as some devices must be further distinguished by ACPI UID, slot information is now associated with HID and UID. Signed-off-by: Adrian Hunter <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-acpi: fix initial runtime pm statusAdrian Hunter1-0/+1
Initial runtime pm status is active. Signed-off-by: Adrian Hunter <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: atmel-mci: convert to dma_request_slave_channel_compat()Ludovic Desroches1-13/+12
Use generic DMA DT helper. Platforms booting with or without DT populated are both supported. Signed-off-by: Ludovic Desroches <[email protected]> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]> Acked-by: Nicolas Ferre <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-esdhc-imx: fix multiblock reads on i.MX53Lucas Stach1-3/+34
The eSDHC controller on the i.MX53 needs an additional, non spec compliant CMD12 after a multiblock read with a predefined number of blocks. Otherwise the internal state machine won't go back to the idle state. This commit effectively reverts 5b6b0ad6 (mmc: sdhci-esdhc-imx: fix for mmc cards on i.MX5), which fixed part of the problem by making multiblock reads work, however this fix was not sufficient when multi- and singleblock reads got intermixed. This implements the recommended workaround (Freescale i.MX Reference Manual, section 29.6.8 "Multi-block Read") by manually sending a CMD12 with the RSPTYP bits cleared. Signed-off-by: Lucas Stach <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-26mmc: sdhci-esdhc-imx: Fix SDIO interruptsMartin Fuzzey1-1/+3
Currently SDIO interrupts do not work on i.MX53 and maybe others. This was observed with a Marvell 8787 based SDIO wifi adapter using the mwifiex driver and firmware from the Marvell git repository. The symptom was a timeout after firmware download. Observing the SDIO_DAT1 line showed that an interrupt was requested (level 0) but no interrupt was generated in software, the line stayed low until a timeout ocurred and the card was reset. There is a Freescale errata ENGcm11186 "eSDHC misses SDIO interrupt when CINT is disabled" The workaround suggested by this errata is already implemented and involves clearing and then setting the D3CD bit in the host control register [see esdhc_writel_le()] However, when esdhc_writeb_le() is later used to write to SDHCI_HOST_CONTROL it always resets the D3CD bit. To fix this simply add the D3CD bit to the set of bits not modified by esdhc_writeb_le(). Signed-off-by: Martin Fuzzey <[email protected]> Signed-off-by: Chris Ball <[email protected]>
2013-05-23ARM: 7726/1: mmc: mmci: Add card_busy function to improve UHS card supportUlf Hansson2-1/+34
To verify a signal voltage switch at initialization of UHS cards the .card_busy callback is used. For some of the ST-variants, card busy detection on the DAT0 pin is supported. We extend the variant struct with a busy_detect flag to indicate support for it. A corresponding busy detect function, which polls the busy status bit, is then set to the .card_busy callback. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Russell King <[email protected]>
2013-05-23ARM: 7725/1: mmc: mmci: Cache MMCIDATACTRL registerUlf Hansson2-3/+15
Add a cache variable in the host struct that reflects the current data in the MMCIDATACTRL register. This patch will not introduce any functional change but instead provide an easy option to keep specific bits in the register between each data transfer. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Russell King <[email protected]>
2013-05-23ARM: 7724/1: mmc: mmci: Support signal voltage switch for UHS cardsUlf Hansson1-0/+34
Add .start_signal_voltage_switch callback to be able to support UHS cards. The voltage switch requires the optional vqmmc regulator to exist since the actual voltage switch will be performed directly on it. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Russell King <[email protected]>
2013-05-23ARM: 7721/1: mmc: mmci: Fixup regulator handling for vqmmcUlf Hansson2-4/+7
We can not rely on regulator_is_enabled to decide whether to enable|disable the regulator. It would mean that the reference counter for it is not balanced properly. Instead keep track of our internal state by using a new flag in the host struct, so we can take correct decisions. Signed-off-by: Ulf Hansson <[email protected]> Signed-off-by: Russell King <[email protected]>
2013-05-23ARM: 7713/1: mmc: mmci: Allow MMCI to request channels with information ↵Lee Jones1-21/+22
acquired from DT Currently, if DMA information isn't passed from platform data, then DMA will not be used. This patch allows DMA information obtained though Device Tree to be used as well. Cc: Chris Ball <[email protected]> Cc: [email protected] Signed-off-by: Lee Jones <[email protected]> Signed-off-by: Russell King <[email protected]>
2013-05-23ARM: 7719/1: mmc: mmci: Support for CMD23Ulf Hansson1-4/+10
Support added for transmission of CMD23 during multi block read or write. In order to activate this feature, MMC_CAP_CMD23 flag needs to be enabled in the capabilities field. Note that CMD23 support is mandatory to support features like reliable write, data tag, context ID, packed command. This patch is based upon a patch from Saugata Das. Signed-off-by: Ulf Hansson <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
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