27 Jul, 2008
2 commits
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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 -
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
17 Jul, 2008
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (68 commits)
sdio_uart: Fix SDIO break control to now return success or an error
mmc: host driver for Ricoh Bay1Controllers
sdio: sdio_io.c Fix sparse warnings
sdio: fix the use of hard coded timeout value.
mmc: OLPC: update vdd/powerup quirk comment
mmc: fix spares errors of sdhci.c
mmc: remove multiwrite capability
wbsd: fix bad dma_addr_t conversion
atmel-mci: Driver for Atmel on-chip MMC controllers
mmc: fix sdio_io sparse errors
mmc: wbsd.c fix shadowing of 'dma' variable
MMC: S3C24XX: Refuse incorrectly aligned transfers
MMC: S3C24XX: Add maintainer entry
MMC: S3C24XX: Update error debugging.
MMC: S3C24XX: Add media presence test to request handling.
MMC: S3C24XX: Fix use of msecs where jiffies are needed
MMC: S3C24XX: Add MODULE_ALIAS() entries for the platform devices
MMC: S3C24XX: Fix s3c2410_dma_request() return code check.
MMC: S3C24XX: Allow card-detect on non-IRQ capable pin
MMC: S3C24XX: Ensure host->mrq->data is valid
...Manually fixed up bogus executable bits on drivers/mmc/core/sdio_io.c
and include/linux/mmc/sdio_func.h when merging.
15 Jul, 2008
7 commits
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This adds reading and using of enable_timeout from the CIS
Signed-off-by: Benzi Zbit
Signed-off-by: Tomas Winkler
Signed-off-by: Pierre Ossman -
Relax requirements on host controllers and only require that they do not
report a transfer count than is larger than the actual one (i.e. a lower
value is okay). This is how many other parts of the kernel behaves so
upper layers should already be prepared to handle that scenario. This
gives us a performance boost on MMC cards.Signed-off-by: Pierre Ossman
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This patch fixes sdio_io sparse errors.
This fix changes signature of API functions,
changing
unsigned char -> u8
unsigned short -> u16
unsigned long -> u32 - this was probably a bug in 64 bit platformsSigned-off-by: Tomas Winkler
Signed-off-by: Pierre Ossman -
There are a lot of crappy controllers out there that cannot handle
all the request sizes that the MMC/SD/SDIO specifications require.
In case the card driver can pad the data to overcome the problems,
this commit adds a helper that calculates how much that padding
should be.A corresponding helper is also added for SDIO, but it can also deal
with all the complexities of splitting up a large transfer efficiently.Signed-off-by: Pierre Ossman
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Now get_ro() callback must return 0/1 values for its logical states, and
negative errno values in case of error. If particular host instance doesn't
support RO/WP switch, it should return -ENOSYS.This patch changes some hosts in two ways:
1. Now functions should be smart to not return negative values in
"RO asserted" case (particularly gpio_ calls could return negative
values for the outermost GPIOs).Also, board code usually passes get_ro() callbacks that directly return
gpioreg & bit result, so at91_mci, imxmmc, pxamci and mmc_spi's get_ro()
handlers need take special care when returning platform's values to the
mmc core.2. In case of host instance didn't implement get_ro() callback, it should
really return -ENOSYS and let the mmc core decide what to do about it
(mmc core thinks the same way as the hosts, so it isn't functional
change).Signed-off-by: Anton Vorontsov
Signed-off-by: Pierre Ossman -
Some hosts (and boards that use mmc_spi) do not use interrupts on the CD
line, so they can't trigger mmc_detect_change. We want to poll the card
and see if there was a change. 1 second poll interval seems resonable.This patch also implements .get_cd() host operation, that could be used
by the hosts that are able to report card-detect status without need to
talk MMC.Signed-off-by: Anton Vorontsov
Signed-off-by: Pierre Ossman -
This patch removes a CVS tag that wasn't updated for a long time.
Signed-off-by: Adrian Bunk
Signed-off-by: Pierre Ossman
13 Dec, 2007
1 commit
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This field and corresponding defines are simply never used anywhere
in the code. But its mere presence is enough to confuse some host
driver authors who attempt to rely on it. Let's eliminate the
possibility for confusion and remove it entirely.Signed-off-by: Nicolas Pitre
Signed-off-by: Pierre Ossman
18 Oct, 2007
1 commit
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Add driver for Marvell's Libertas 8385 and 8686 wifi chips.
Signed-off-by: Pierre Ossman
Acked-by: Dan Williams
24 Sep, 2007
22 commits
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Add a led trigger for each host controller that indicates if there
is a request active on the controller.Signed-off-by: Pierre Ossman
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Teach the MMC/SD/SDIO system headers that some hosts use SPI mode
- New host capabilities and status bits
* MMC_CAP_SPI, with mmc_host_is_spi() test
* mmc_host.use_spi_crc flag- SPI-specific declarations:
* Response types, MMC_RSP_SPI_R*
* Two SPI-only commands
* Status bits used native to SPI: R1_SPI_*, R2_SPI_*- Fix a few (unrelated) whitespace bugs in the headers.
- Reorder a few mmc_host fields, removing several bytes of padding
None of these changes affect current code.
Signed-off-by: David Brownell
Signed-off-by: Pierre Ossman -
Store vendor strings found in CISTPL_VERS_1 so that function drivers
can access them.Signed-off-by: Pierre Ossman
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Add sdio_f0_readb() and sdio_f0_writeb() functions to reading and
writing function 0 registers. Writes outside the vendor specific CCCR
registers (0xF0 - 0xFF) are not permitted.Signed-off-by: David Vrabel
Signed-off-by: Pierre Ossman -
Before a driver is probed, set the function's block size to the default so the
driver is sure the block size is something sensible and it needn't explicitly
set it.The default block size is the largest that's supported by both the card and
the host, with a maximum of 512 to ensure aribitrarily sized transfer use the
optimal (least) number of commands.See http://lkml.org/lkml/2007/8/7/150 for reasons for the block size choice.
Signed-off-by: David Vrabel
Signed-off-by: Pierre Ossman -
Signed-off-by: David Vrabel
Signed-off-by: Pierre Ossman -
Signed-off-by: Nicolas Pitre
Signed-off-by: Pierre Ossman -
Support the multi-byte transfer operation, including handlers for
common operations like writel()/readl().Signed-off-by: Pierre Ossman
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Signed-off-by: Nicolas Pitre
Signed-off-by: Pierre Ossman -
It is sometimes necessary to give up on trying to claim the host lock,
especially if that happens in a thread that has to be stopped.While at it, fix the description for mmc_claim_host() which was wrong.
Signed-off-by: Nicolas Pitre
Signed-off-by: Pierre Ossman -
Signed-off-by: Nicolas Pitre
Signed-off-by: Pierre Ossman -
Signed-off-by: Pierre Ossman
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Add a more clean separation between global, common CIS information
and the function specific one as we need the common information in
places where no specific function is specified.Signed-off-by: Pierre Ossman
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This way those tuples that the core cares about are consumed by the core
code, and tuples that only function drivers might make sense of are
available to drivers.Signed-off-by: Nicolas Pitre
Signed-off-by: Pierre Ossman -
Signed-off-by: Pierre Ossman
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Signed-off-by: Pierre Ossman
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Like many other buses, the devices (functions) on the SDIO bus
must be enabled before they can be used. Add functions that allow
drivers to do so.Signed-off-by: Pierre Ossman
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Add command wrappers that simplify register access from SDIO
function drivers.Signed-off-by: Pierre Ossman
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Add basic driver handling to the SDIO device model.
Signed-off-by: Pierre Ossman
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Add the sdio bus type and basic device handling.
Signed-off-by: Pierre Ossman
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Signed-off-by: Pierre Ossman
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Really basic init sequence for SDIO cards.
Signed-off-by: Pierre Ossman
23 Sep, 2007
5 commits
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The MMC_DATA_MULTI flag never had a proper definition of what it
means, so remove it and let the drivers check the block count in
the request.Signed-off-by: Pierre Ossman
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Remove the BYTEBLOCK capability and let the broken hosts fail the
requests with -EINVAL instead.Signed-off-by: Pierre Ossman
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The write parameter in mmc_set_data_timeout() is redundant as the
data structure contains information about the direction of the
transfer.Signed-off-by: Pierre Ossman
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Make sure we do not try to parse a structure we do not
understand.Signed-off-by: Pierre Ossman
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Convert the MMC layer to use standard error codes and not its own,
incompatible values.Signed-off-by: Pierre Ossman
26 Jul, 2007
1 commit
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Make sure the kerneldoc comments are up to date and relevant.
Signed-off-by: Pierre Ossman