linux-toradex.git/include/linux/mmc/mmc.h, branch v3.4.16

mmc: MMC-4.5 Data Tag Support

2012-03-25T23:33:44+00:00

MMC-4.5 data tag feature will be used to store the file system meta-data
in the tagged region of eMMC. This will improve the write and subsequent
read transfer time for the meta data.

Signed-off-by: Saugata Das 
Tested-by: Venkatraman S 
Signed-off-by: Chris Ball

mmc: core: HS200 mode support for eMMC 4.5

2012-01-12T20:17:15+00:00

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

2012-01-12T04:58:43+00:00

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

2011-10-26T20:32:29+00:00

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

2011-10-26T20:32:28+00:00

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

2011-10-26T20:32:26+00:00

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

2011-10-26T20:32:23+00:00

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

2011-10-26T20:32:21+00:00

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.

2011-10-26T20:32:17+00:00

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

2011-10-26T20:32:13+00:00

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