linux-stable.git/drivers/mmc/card, branch v3.2

mmc: core: Add quirk for long data read time

2011-12-10T21:18:35+00:00

Adds a quirk that sets the data read timeout to a fixed value instead
of relying on the information in the CSD. The timeout value chosen
is 300ms since that has proven enough for the problematic cards found,
but could be increased if other cards require this.

This patch also enables this quirk for certain Micron cards known to
have this problem.

Signed-off-by: Stefan Nilsson XK 
Signed-off-by: Ulf Hansson 
Acked-by: Linus Walleij 
Cc: 
Signed-off-by: Chris Ball

mmc: core: add workaround for controllers with broken multiblock reads

2011-10-27T13:10:57+00:00

Due to hardware bugs, some MMC host controllers don't support
multiple-block reads[1].  To resolve, add a new MMC capability flag,
MMC_CAP2_NO_MULTI_READ, which can be set by affected host controller
drivers.  When this capability is set, all reads will be issued one
sector at a time.

1. See for example Advisory 2.1.1.128 "MMC: Multiple Block Read
Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
Revision F (October 2010) (SPRZ278F), available from
http://focus.ti.com/lit/er/sprz278f/sprz278f.pdf

Signed-off-by: Paul Walmsley 
Cc: Dave Hylands 
Tested-by: Steve Sakoman 
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: new discard feature support at eMMC v4.5

2011-10-26T20:32:27+00:00

MMC v4.5 supports the DISCARD feature (CMD38).  It's different from
trim and there's no check bit.  Currently it's only supported at v4.5.

Signed-off-by: Kyungmin Park 
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: replace printk with appropriate display macro

2011-10-26T20:32:22+00:00

All the files using printk function for displaying kernel messages
in the mmc driver have been replaced with corresponding macro.

Signed-off-by: Girish K S 
Signed-off-by: Chris Ball

mmc: Add module.h to drivers/mmc users assuming implicit presence.

2011-10-26T20:32:19+00:00

We are cleaning up the implicit presence of module.h; these guys are
some of the people who just assume it will be there.  Call it out
explitly for those that really need it.

Signed-off-by: Paul Gortmaker 
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: block: support no access to boot partitions

2011-10-26T20:32:15+00:00

Intel Medfield platform blocks access to eMMC boot partitions which
results in switch errors.  Since there is no access, mmcboot0/1
devices should not be created.  Add a host capability to reflect that.

Signed-off-by: Adrian Hunter 
Signed-off-by: Chris Ball

mmc: block: fix boot partition switch error path

2011-10-26T20:32:14+00:00

In the case of a switch error, do not update partition config as though
the switch succeeded, and ensure blk_end_request is called on the
failed request.

Signed-off-by: Adrian Hunter 
Acked-by: Andrei Warkentin 
Signed-off-by: Chris Ball