linux-toradex.git/drivers/mmc, branch v3.0.2

mmc: sdhci-esdhc-imx: SDHCI_CARD_PRESENT does not get cleared

2011-08-05T04:58:31+00:00

commit 803862a6f7de4939e0a557214e5e4b37e36f87ff upstream.

The function esdhc_readl_le intends to clear bit SDHCI_CARD_PRESENT,
when the card detect gpio tells there is no card.  But it does not
clear the bit actually.  The patch gives a fix on that.

Signed-off-by: Shawn Guo 
Acked-by: Wolfram Sang 
Signed-off-by: Chris Ball 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

2011-07-13T23:47:31+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
  mmc: core: Bus width testing needs to handle suspend/resume

mmc: core: Bus width testing needs to handle suspend/resume

2011-07-13T18:54:37+00:00

On reading the ext_csd for the first time (in 1 bit mode), save the
ext_csd information needed for bus width compare.

On every pass we make re-reading the ext_csd, compare the data
against the saved ext_csd data.

This fixes a regression introduced in 3.0-rc1 by 08ee80cc397ac1a3
("mmc: core: eMMC bus width may not work on all platforms"), which
incorrectly assumed we would be re-reading the ext_csd at resume-
time.

Signed-off-by: Philip Rakity 
Tested-by: Jaehoon Chung 
Signed-off-by: Chris Ball

ARM: 6980/1: mmci: use StartBitErr to detect bad connections

2011-07-06T19:46:04+00:00

Stresstesting insert/remove of SD-cards can trigger
a StartBitErr. This made the driver to hang in forever
waiting for a non ocurring data timeout.

This bit and interrupt is documented in the original
PL180 TRM, just never implemented until now.

Signed-off-by: Ulf Hansson 
Reviewed-by: Linus Walleij 
Reviewed-by: Jonas Aberg 
Signed-off-by: Linus Walleij 
Signed-off-by: Russell King

mmc: queue: bring discard_granularity/alignment into line with SCSI

2011-06-25T22:53:05+00:00

SCSI defines discard alignment as the offset to the first
optimal discard.  In the case of SD/MMC, that is always zero
which is the default.

SCSI defines discard granularity as a hint of a optimal
discard size.  That is much better expressed by the MMC
"preferred erase size" (pref_erase) field.

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

mmc: queue: append partition subname to queue thread name

2011-06-25T22:52:57+00:00

For example, an eMMC with 2 boot partitions will have 3 threads.
The names change from:

   40 ?        00:00:00 mmcqd/0
   41 ?        00:00:00 mmcqd/0
   42 ?        00:00:00 mmcqd/0

to:

   40 ?        00:00:00 mmcqd/0
   41 ?        00:00:00 mmcqd/0boot0
   42 ?        00:00:00 mmcqd/0boot1

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

mmc: core: make erase timeout calculation allow for gated clock

2011-06-25T22:52:53+00:00

The erase timeout calculation may depend on clock rate
which is zero if the clock is gated, so use
mmc_host_clk_rate() which allows for that case.

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

mmc: block: switch card to User Data Area when removing the block driver

2011-06-25T22:52:49+00:00

The MMC block driver and other drivers (e.g. mmc-test) will expect
the card to be switched to the User Data Area eMMC partition when
they start.  Hence the MMC block driver should ensure it is that
way when it is removed.

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

mmc: sdio: reset card during power_restore

2011-06-25T22:52:44+00:00

mmc_sdio_power_restore() skips some steps that are performed in other
power-related codepaths which are necessary to fully reset the card.
Without this, runtime PM fails for SD8686 SDIO wifi on OLPC XO-1.5.

Signed-off-by: Daniel Drake 
Signed-off-by: Chris Ball

mmc: sdhi: DMA slave ID 0 is invalid

2011-06-25T22:52:20+00:00

Don't try to allocate DMA resources if the platform didn't specify
positive DMA slave IDs.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Chris Ball