kernel/linux.git/drivers/mmc/core, branch v3.11.1

Merge tag 'mmc-updates-for-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

2013-07-10T18:16:00+00:00

Pull MMC updates from Chris Ball: "MMC highlights for 3.11: Core: - Add support for eMMC 5.1 devices - Add MMC_CAP_AGGRESSIVE_PM capability for aggressive power management of eMMC/SD between requests, using runtime PM - Add an ioctl to perform the eMMC 4.5 Sanitize command. Sample code at: git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git Drivers: - dw_mmc: Add support for Rockchip's Cortex-A9 SoCs - dw_mmc: Add support for Altera SoCFPGAs - sdhci-esdhc-imx: Add support for 8-bit bus width, non-removable cards - sdhci-bcm-kona: New driver for Broadcom Kona (281xx) SoCs - sdhi/tmio: Add DT DMA support" * tag 'mmc-updates-for-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (87 commits) mmc: bcm281xx SDHCI driver mmc: sdhci: add card_event callback to sdhci mmc: core: Fixup Oops for SDIO shutdown mmc: sdhci-pci: add another device id mmc: esdhc: Fix bug when writing to SDHCI_HOST_CONTROL register mmc: esdhc: Add support for 8-bit bus width and non-removable card mmc: core: production year for eMMC 4.41 and later mmc: omap: remove unnecessary #if 0's mmc: sdhci: fix ctrl_2 on super-speed selection mmc: dw_mmc-pltfm: add Rockchip variant mmc: dw_mmc-pltfm: move probe and remove below dt match table mmc: dw_mmc-pltfm: remove static from dw_mci_pltfm_remove mmc: sdhci-acpi: add support for eMMC hardware reset for HID 80860F14 mmc: sdhci-pci: add support for eMMC hardware reset for BYT eMMC. mmc: dw_mmc: Add support DW SD/MMC driver on SOCFPGA mmc: sdhci: fix caps2 for HS200 sdhci-pxav3: Fix runtime PM initialization mmc: core: Add DT-bindings for MMC_CAP2_FULL_PWR_CYCLE mmc: core: Invent MMC_CAP2_FULL_PWR_CYCLE mmc: core: Enable power_off_notify for eMMC shutdown sequence ...

mmc: core: Fixup Oops for SDIO shutdown

2013-07-05T16:51:22+00:00

Commit "mmc: core: Handle card shutdown from mmc_bus" introduced an Oops in the shutdown sequence for SDIO. The drv pointer, does not exist for SDIO since the probing of the SDIO card from the mmc_bus perspective is expected to fail by returning -ENODEV. This patch adds the proper check for the pointer before calling it. Signed-off-by: Ulf Hansson Reported-by: Stephen Warren Reported-by: Tuomas Tynkkynen Tested-by: Tuomas Tynkkynen Acked-by: Jaehoon Chung Signed-off-by: Chris Ball

mmc: core: production year for eMMC 4.41 and later

2013-07-05T16:46:30+00:00

The field containing the production date in the CID register only uses 4 bits to encode the year, starting from 1997 in the original standard. In 2013, the production year field contains 0, and the kernel reports a 1997 production date. The eMMC 4.51 specification adds a new interpretation rule. For all devices implementing the 4.41 specification or later, the production year field will be interpreted as a value between 2010 and 2025, with 0 corresponding to 2013. Signed-off-by: Romain Izard Signed-off-by: Chris Ball

mmc: core: Add DT-bindings for MMC_CAP2_FULL_PWR_CYCLE

2013-06-27T16:39:22+00:00

The DT-binding for MMC_CAP2_FULL_PWR_CYCLE, is used to indicate whether it is possible to perform a full power cycle of the card. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Invent MMC_CAP2_FULL_PWR_CYCLE

2013-06-27T16:39:22+00:00

MMC_CAP2_FULL_PWR_CYCLE shall be set by host drivers which are able to do a complete power cycle of the card. In the eMMC case that includes both vcc and vccq. This CAP is providing the protocol layer with important information, needed to take optimized decisions during card initialization and in the suspend/resume sequence. MMC_CAP2_POWEROFF_NOTIFY is replaced by MMC_CAP2_FULL_PWR_CYCLE, since it makes sense to use a wider scope for it. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Enable power_off_notify for eMMC shutdown sequence

2013-06-27T16:39:21+00:00

In suspend mode it is important to save power. If the host is able to cut buth vcc and vccq, the MMC_CAP2_POWEROFF_NOTIFY shall be set. It will mean the card will be completely powered down at suspend and the power off notification cmd will be sent prior power down. It seems common not being able to cut both vcc and vccq for a host. In this situation we issue the sleep cmd in favor of the power off notification cmd, to save more power. While maintainng the above policy, we also want to make use of the power off notification in the shutdown sequence, even in the case were the host has not set MMC_CAP2_POWEROFF_NOTIFY, since we know vcc and vccq will regardless be cut. We accomplish this by always enabling the power off notification byte in the EXT_CSD and issue the power off notification when either MMC_CAP2_POWEROFF_NOTIFY is set or we are executing a shutdown. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Add shutdown callback for (e)MMC bus_ops

2013-06-27T16:39:20+00:00

The shutdown sequence of an (e)MMC is very similar to a suspend. We re-use the suspend function and tell it we are not in suspend context. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Handle both poweroff notification types for eMMC

2013-06-27T16:39:19+00:00

Depending on the context of the operation while powering down the card, either POWER_OFF_NOTIFY_SHORT or POWER_OFF_NOTIFY_LONG will be used. In suspend context a short timeout is preferred while a long timeout would be acceptable in a shutdown/hibernation context. We add a new parameter to the mmc_suspend function so we can provide an indication of what notification type to use. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Add shutdown callback for SD bus_ops

2013-06-27T16:39:19+00:00

For the SD .shutdown callback we re-use the SD suspend function since it performs the relevant actions. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Extend shutdown sequence to handle bus operations

2013-06-27T16:39:18+00:00

By adding an optional .shutdown callback to the bus_ops struct we provide the possibility to let each bus type handle it's shutdown requirements. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball