linux-toradex.git/include/linux/mmc, branch v2.6.38.8

Revert "mmc: fix a race between card-detect rescan and clock-gate work instances"

2011-05-21T22:13:26+00:00

commit 86f315bbb2374f1f077500ad131dd9b71856e697 upstream.

This reverts commit 26fc8775b51484d8c0a671198639c6d5ae60533e, which has
been reported to cause boot/resume-time crashes for some users:

https://bbs.archlinux.org/viewtopic.php?id=118751.

Signed-off-by: Chris Ball 
Signed-off-by: Greg Kroah-Hartman

mmc: fix a race between card-detect rescan and clock-gate work instances

2011-05-09T22:06:39+00:00

commit 26fc8775b51484d8c0a671198639c6d5ae60533e upstream.

Currently there is a race in the MMC core between a card-detect
rescan work and the clock-gating work, scheduled from a command
completion. Fix it by removing the dedicated clock-gating mutex
and using the MMC standard locking mechanism instead.

Signed-off-by: Guennadi Liakhovetski 
Cc: Simon Horman 
Cc: Magnus Damm 
Acked-by: Linus Walleij 
Signed-off-by: Chris Ball 
Signed-off-by: Greg Kroah-Hartman

mmc: sh_mmcif: Convert to __raw_xxx() I/O accessors.

2011-01-14T06:57:47+00:00

When using the I/O accessors in raw mode from the boot stubs we don't
want to bother with any of the complexity associated with readl/writel
and friends. Furthermore, utilization within the context of the host
driver itself is all performed on an ioremapped window, so using the
__raw variants there doesn't pose any problem either.

If and when barriers need to be added in the future, these will need to
be explicitly written out, but this is so far not a concern for any of
the affected CPUs in question.

This fixes up the link error introduced by the ARM tree via its barrier
refactoring:

	arch/arm/boot/compressed/mmcif-sh7372.o: In function `mmcif_loader':
	mmcif-sh7372.c:(.text+0x9e8): undefined reference to `outer_cache

Following the change in:

	http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6275/1

Reported-by: Simon Horman 
Signed-off-by: Paul Mundt

Merge branch 'sh/sdio' into sh-latest

2011-01-12T05:37:42+00:00

Merge branches 'sh/memchunk' and 'common/mmcif' into sh-latest

2011-01-11T04:05:15+00:00

mmc: dw_mmc: Add Synopsys DesignWare mmc host driver.

2011-01-09T04:52:24+00:00

This adds the mmc host driver for the Synopsys DesignWare mmc
host controller, found in a number of embedded SoC designs.

Signed-off-by: Will Newton 
Reviewed-by: Matt Fleming 
Reviewed-by: Chris Ball 
Signed-off-by: Chris Ball

mmc: sdhci: add quirk for max len ADMA descriptors

2011-01-09T04:52:23+00:00

Some controllers misparse segment length 0 as being 0, not 65536. Add
a quirk to deal with it.

Signed-off-by: Olof Johansson 
Reviewed-by: Chris Ball 
Signed-off-by: Chris Ball

mmc: Test bus-width for old MMC devices

2011-01-09T04:52:09+00:00

Some old MMC devices fail with the 4/8 bits the driver tries to use
exclusively.  This patch adds a test for the given bus setup and falls
back to the lower bit mode (until 1-bit mode) when the test fails.

[Major rework and refactoring by tiwai]
[Quirk addition and many fixes by prakity]

Signed-off-by: Aries Lee 
Signed-off-by: Takashi Iwai 
Signed-off-by: Philip Rakity 
Tested-by: Philip Rakity 
Signed-off-by: Chris Ball

mmc: sdio: don't reinitialize nonremovable powered-resumed cards

2011-01-09T03:48:17+00:00

Upon system resume, SDIO core must reinitialize cards that were
powered off during suspend.

If the card had its power kept during suspend (and thus it is
'powered-resumed'), SDIO core performs only a limited reinitializing,
mainly needed to make sure that the card wasn't removed/replaced.

If a __nonremovable__ card is powered-resumed, we can safely skip the
reinitializing phase.

Note: 9b966aa (mmc: sdio: fully reconfigure oldcard on resume) removed
the bus width reconfiguration since mmc_sdio_init_card already does it.
It is brought back now in case mmc_sdio_init_card is skipped.

Signed-off-by: Ohad Ben-Cohen 
Signed-off-by: Chris Ball

mmc: Add support for JMicron 388 SD/MMC controller

2011-01-09T03:48:04+00:00

JMicron 388 SD/MMC combo controller supports the 1.8V low-voltage for
SD, but MMC doesn't work with the low-voltage, resulting in an error
at probing.

This patch adds the support for multiple voltage mask per device type,
so that SD works with 1.8V while MMC forces 3.3V.  Here new ocr_avail_*
fields for each device are introduced, so that the actual OCR mask is
switched dynamically.

Also, the restriction of low-voltage in core/sd.c is removed when the
bit is allowed explicitly via ocr_avail_sd mask.

This patch was rewritten from scratch based on Aries' original code.

Signed-off-by: Aries Lee 
Signed-off-by: Takashi Iwai 
Reviewed-by: Chris Ball 
Signed-off-by: Chris Ball