linux-stable.git/drivers/mmc/core, branch linux-2.6.28.y

mmc: fix data timeout for SEND_EXT_CSD

2009-03-17T00:32:19+00:00

commit cda56ac29f2d8288d62978272856884d26e0b47b upstream.

Commit 0d3e0460f307e84904968aad6cff97bd688583d8
"MMC: CSD and CID timeout values" inadvertently broke
the timeout for the MMC command SEND_EXT_CSD.

This patch puts it back again.

Depending on the characteristics of the controller,
this bug may prevent the use of MMC cards.

Signed-off-by: Adrian Hunter 
Signed-off-by: Pierre Ossman 
Signed-off-by: Greg Kroah-Hartman

mmc: struct device - replace bus_id with dev_name(), dev_set_name()

2008-11-08T20:37:46+00:00

Acked-by: Greg Kroah-Hartman 
Signed-Off-By: Kay Sievers 
Signed-off-by: Pierre Ossman

mmc: increase SD write timeout for crappy cards

2008-11-08T20:36:59+00:00

It seems that some cards are slightly out of spec and occasionally
will not be able to complete a write in the alloted 250 ms [1].
Incease the timeout slightly to allow even these cards to function
properly.

[1] http://lkml.org/lkml/2008/9/23/390

Signed-off-by: Pierre Ossman

MMC: CSD and CID timeout values

2008-10-12T09:04:37+00:00

The MMC spec states that the timeout for accessing the CSD and CID
registers is 64 clock cycles.

Signed-off-by: Matthew Fleming 
Signed-off-by: Pierre Ossman

sdio: high-speed support

2008-10-12T09:04:34+00:00

Signed-off-by: Pierre Ossman

sdio: give sdio irq thread a host specific name

2008-10-12T09:04:30+00:00

There is one thread per host controller so make sure they all get
unique names.

Signed-off-by: Pierre Ossman

sdio: make sleep on error interruptable

2008-10-12T09:04:28+00:00

Make sure we can be woken from the forced sleep that is done on errors.
Removing a card often results in -ENOMEDIUM or -EILSEQ so we previously
locked up the removal process for a second.

We could completely exit on -ENOMEDIUM, but it might be a transient
glitch so treat it like any other error.

Signed-off-by: Pierre Ossman

mmc: properly iterate over sg list in debug check

2008-08-01T17:03:37+00:00

Signed-off-by: Pierre Ossman

mmc: Add per-card debugfs support

2008-07-26T23:26:17+00:00

For each card successfully added to the bus, create a subdirectory under
the host's debugfs root with information about the card.

At the moment, only a single file is added to the card directory for
all cards: "state". It reflects the "state" field in struct mmc_card,
indicating whether the card is present, readonly, etc.

For MMC and SD cards (not SDIO), another file is added: "status".
Reading this file will ask the card about its current status and
return it. This can be useful if the card just refuses to respond to
any commands, which might indicate that the card state is not what the
MMC core thinks it is (due to a missing stop command, for example.)

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman

mmc: Export internal host state through debugfs

2008-07-26T23:26:16+00:00

When CONFIG_DEBUG_FS is set, create a few files under /sys/kernel/debug
containing information about an mmc host's internal state. Currently,
just a single file is created, "ios", which contains information about
the current operating parameters for the bus (clock speed, bus width,
etc.)

Host drivers can add additional files and directories under the host's
root directory by passing the debugfs_root field in struct mmc_host as
the 'parent' parameter to debugfs_create_*.

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: Pierre Ossman