linux-toradex.git/drivers/mmc/host/davinci_mmc.c, branch v3.0.83

mmc: davinci: add support for SDIO irq handling

2011-01-10T00:16:18+00:00

This patch adds support for handling SDIO interrupt on DaVinci MMC/SD
controller.

The patch has been tested on DM355 and DA850 EVMs with Marvell Libertas
based SDIO wireless LAN card.

Signed-off-by: Alagu Sankar 
Signed-off-by: Sekhar Nori 
Signed-off-by: Chris Ball

mmc: davinci_mmc: Remove unnecessary semicolon

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

Signed-off-by: Joe Perches 
Signed-off-by: Chris Ball

mmc: Remove distinction between hw and phys segments

2010-10-23T13:11:11+00:00

We have deprecated the distinction between hardware and physical
segments in the block layer.  Consolidate the two limits into one in
drivers/mmc/.

Signed-off-by: Martin K. Petersen 
Signed-off-by: Chris Ball

mmc: remove the "state" argument to mmc_suspend_host()

2010-05-27T16:12:40+00:00

Even though many mmc host drivers pass a pm_message_t argument to
mmc_suspend_host() that argument isn't used the by MMC core.  As host
drivers are converted to dev_pm_ops they'll have to construct
pm_message_t's (as they won't be passed by the PM subsystem any more) just
to appease the mmc suspend interface.

We might as well just delete the unused paramter.

Signed-off-by: Matt Fleming 
Acked-by: Anton Vorontsov 
Acked-by: Michal Miroslaw ZZ
Acked-by: Sascha Sommer 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

davinci: mmc: updates to suspend/resume implementation

2010-05-27T16:12:39+00:00

Improve the suspend and resume callbacks in DaVinci MMC host controller
driver.  Modify the reset status of the contorller and clock during
suspend and resume.  Also migrate the power management callbacks from
platform driver to dev_pm_ops structure.

Tested on DA850/OMAP-L138 EVM.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Chaithrika U S 
Acked-by: Kevin Hilman 
Cc: Vipin Bhandari 
Cc: Sudhakar Rajashekhara 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

davinci: mmc: add a function to control reset state of the controller

2010-05-27T16:12:39+00:00

Add a helper function which will aid in changing the reset
status of the controller.

Signed-off-by: Chaithrika U S 
Signed-off-by: Kevin Hilman 
Cc: Vipin Bhandari 
Cc: Sudhakar Rajashekhara 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

davinci: mmc: pass number of SG segments as platform data

2010-05-27T16:12:39+00:00

On some platforms like DM355, the number of EDMA parameter slots available
for EDMA_SLOT_ANY usage are few.  In such cases, if MMC/SD uses 16 slots
for each instance of MMC controller, then the number of slots available
for other modules will be very few.

By passing the number of EDMA slots to be used in MMC driver from platform
data, EDMA slots available for other purposes can be controlled.

Most of the platforms will not use this platform data variable.  But on
DM355, as the number of EDMA resources available is limited, the number of
scatter- gather segments used inside the MMC driver can be 8 (passed as
platform data) instead of 16.  On DM355, when the number of scatter-gather
segments was reduced to 8, I saw a performance difference of about
0.25-0.4 Mbytes/sec during write.  Read performance variations were
negligible.

Signed-off-by: Sudhakar Rajashekhara 
Acked-by: Kevin Hilman 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

davinci: MMC: add support for 8bit MMC cards

2010-03-06T19:26:36+00:00

Add support for 8bit MMC cards.  The controller data width is configurable
depending on the wires setting in the platform data structure.

MMC 8bit is tested on OMAPL137 and MMC 4bit is tested on OMAPL138 EVM.

Signed-off-by: Vipin Bhandari 
Cc: David Brownell 
Cc: Chaithrika U S 
Cc: Sudhakar Rajashekhara 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

davinci: mmc: add cpufreq support

2009-12-15T16:53:34+00:00

Add cpufreq support to MMC driver. The clock divider value has to be
modified according to the controller input frequency.

Signed-off-by: Chaithrika U S 
Cc: Linus Walleij 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mmc: davinci: modify data types of EDMA related variables

2009-12-15T16:53:34+00:00

Currently DaVinci EDMA driver supports multiple EDMA channel controller
instances.  edma_alloc_channel() api returns a 32 bit value which has the
channel controller number in MSB and the EDMA channel number in LSB.  The
variables which store the value returned by edma_alloc_channel() have to
be 32 bit wide now.

Signed-off-by: Sudhakar Rajashekhara 
Acked-by: Vipin Bhandari 
Cc: Purshotam Kumar 
Acked-by: David Brownell 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds