kernel/include/linux/mmc/mmc.h, branch linux-3.3.y

mmc: core: HS200 mode support for eMMC 4.5

2012-01-12T20:17:15Z

This patch adds the support of the HS200 bus speed for eMMC 4.5 devices. The eMMC 4.5 devices have support for 200MHz bus speed. The function prototype of the tuning function is modified to handle the tuning command number which is different in sd and mmc case. Signed-off-by: Girish K S Signed-off-by: Philip Rakity Signed-off-by: Chris Ball

mmc: boot partition ro lock support

2012-01-12T04:58:43Z

Enable boot partitions to be read-only locked until next power on via a sysfs entry. There will be one sysfs entry for each boot partition: /sys/block/mmcblkXbootY/ro_lock_until_next_power_on Each boot partition is locked by writing 1 to its file. Signed-off-by: Johan Rudholm Signed-off-by: John Beckett Signed-off-by: Chris Ball

mmc: core: support HPI send command

2011-10-26T20:32:29Z

HPI command is defined in eMMC4.41. This feature is important for eMMC4.5 devices. Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball

mmc: core: Add cache control for eMMC4.5 device

2011-10-26T20:32:28Z

This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: Seungwon Jeon Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball

mmc: core: mmc sanitize feature support for v4.5

2011-10-26T20:32:26Z

In the v4.5, there's no secure erase & trim support. Instead it supports the sanitize feature. Signed-off-by: Kyungmin Park Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball

mmc: core: Add Power Off Notify Feature eMMC 4.5

2011-10-26T20:32:23Z

This patch adds support for the power off notify feature, available in eMMC 4.5 devices. If the host has support for this feature, then the mmc core will notify the device by setting the POWER_OFF_NOTIFICATION byte in the extended csd register with a value of 1 (POWER_ON). For suspend mode short timeout is used, whereas for the normal poweroff long timeout is used. Signed-off-by: Girish K S Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball

mmc: core: Add default timeout value for CMD6

2011-10-26T20:32:21Z

EXT_CSD[248] includes the default maximum timeout for CMD6. This field is added at eMMC4.5 Spec. And it can be used for default timeout except for some operations which don't define the timeout (i.e. background operation, sanitize, flush cache) in eMMC4.5 Spec. Signed-off-by: Seungwon Jeon Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball

mmc: core: general purpose MMC partition support.

2011-10-26T20:32:17Z

It allows gerneral purpose partitions in MMC Device. And I try to simply make mmc_blk_alloc_parts using mmc_part structure suggested by Andrei Warkentin. After patching, we see general purpose partitions like this: > cat /proc/partitions 179 0 847872 mmcblk0 179 192 4096 mmcblk0gp3 179 160 4096 mmcblk0gp2 179 128 4096 mmcblk0gp1 179 96 1052672 mmcblk0gp0 179 64 1024 mmcblk0boot1 179 32 1024 mmcblk0boot0 Signed-off-by: Namjae Jeon Acked-by: Andrei Warkentin Signed-off-by: Chris Ball

mmc: core: eMMC 4.5 Power Class Selection Feature

2011-10-26T20:32:13Z

This patch adds the power class selection feature available for mmc versions 4.0 and above. During the enumeration stage before switching to the lower data bus, check if the power class is supported for the current bus width. If the power class is available then switch to the power class and use the higher data bus. If power class is not supported then switch to the lower data bus in a worst case. Signed-off-by: Girish K S Signed-off-by: Chris Ball

mmc: core: add eMMC hardware reset support

2011-10-26T20:32:05Z

eMMC's may have a hardware reset line. This patch provides a host controller operation to implement hardware reset and a function to reset and reinitialize the card. Also, for MMC, the reset is always performed before initialization. The host must set the new host capability MMC_CAP_HW_RESET to enable hardware reset. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball