Граф коммитов

13 Коммитов

Автор SHA1 Сообщение Дата
Adrian Hunter 319a3f1429 mmc: allow host claim / release nesting
This change allows the MMC host to be claimed in situations where the host
may or may not have already been claimed.  Also 'mmc_try_claim_host()' is
now exported.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Philip Langdale <philipl@overt.org>
Cc: "Madhusudhan" <madhu.cr@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 07:39:33 -07:00
Anton Vorontsov 86e8286a0e mmc: Add mmc_vddrange_to_ocrmask() helper function
This function sets the OCR mask bits according to provided voltage
ranges. Will be used by the mmc_spi OpenFirmware bindings.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-12-31 18:18:13 +01:00
Pierre Ossman ad3868b2ec mmc,sdio: helper function for transfer padding
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 <drzeus@drzeus.cx>
2008-07-15 14:14:44 +02:00
David Brownell 97018580c4 MMC headers learn about SPI
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 <dbrownell@users.sourceforge.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23 21:37:51 +02:00
Nicolas Pitre 2342f3323c sdio: allow for mmc_claim_host to be aborted
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 <npitre@mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23 20:55:13 +02:00
Pierre Ossman b2bcc798bb mmc: implement SDIO IO_RW_DIRECT operation
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23 19:42:37 +02:00
Pierre Ossman 5c4e6f1301 mmc: detect SDIO cards
Really basic init sequence for SDIO cards.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23 19:40:07 +02:00
Pierre Ossman be0192aae1 mmc: remove confusing flag
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 <drzeus@drzeus.cx>
2007-09-23 09:15:12 +02:00
Pierre Ossman b146d26a61 mmc: mmc_set_data_timeout() parameter write is redundant
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 <drzeus@drzeus.cx>
2007-09-23 09:15:00 +02:00
Pierre Ossman 17b0429dde mmc: remove custom error codes
Convert the MMC layer to use standard error codes and not its own,
incompatible values.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23 08:46:48 +02:00
Pierre Ossman 67a61c4847 mmc: update kerneldoc
Make sure the kerneldoc comments are up to date and relevant.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-07-26 01:53:39 +02:00
Pierre Ossman da7fbe58d2 mmc: Separate out protocol ops
Move protocol operations and definitions into their own files
in an effort to separate protocol handling and bus
arbitration more clearly.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01 13:04:18 +02:00
Pierre Ossman aaac1b470b mmc: Move core functions to subdir
Create a "core" subdirectory to house the central bus handling
functions.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01 13:04:18 +02:00