kernel/linux.git/include/linux/mmc/mmc.h, branch v2.6.34

mmc: fix incorrect interpretation of card type bits

2010-03-24T23:31:21+00:00

In the extended CSD register the CARD_TYPE is an 8-bit value of which the upper 6 bits were reserved in JEDEC specifications prior to version 4.4. In version 4.4 two of the reserved bits were designated for identifying support for the newly added High-Speed Dual Data Rate. Unfortunately the mmc_read_ext_csd() function required that the reserved bits be zero instead of ignoring them as it should. This patch makes mmc_read_ext_csd() ignore the CARD_TYPE bits that are reserved or not yet supported. It also stops the function jumping to the end as though an error occurred, when it is only warns that the CARD_TYPE bits (that it does interpret) are invalid. Signed-off-by: Adrian Hunter Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mmc: check status after MMC SWITCH command

2009-09-23T14:39:34+00:00

According to the standard, the SWITCH command should be followed by a SEND_STATUS command to check for errors. Signed-off-by: Adrian Hunter Acked-by: Matt Fleming Cc: Ian Molton Cc: "Roberto A. Foglietta" Cc: Jarkko Lavinen Cc: Denis Karpov Cc: Pierre Ossman Cc: Philip Langdale Cc: "Madhusudhan" Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mmc: add mmc card sleep and awake support

2009-09-23T14:39:33+00:00

Add support for the new MMC command SLEEP_AWAKE. Signed-off-by: Jarkko Lavinen Signed-off-by: Adrian Hunter Acked-by: Matt Fleming Cc: Ian Molton Cc: "Roberto A. Foglietta" Cc: Jarkko Lavinen Cc: Denis Karpov Cc: Pierre Ossman Cc: Philip Langdale Cc: "Madhusudhan" Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

include/linux/mmc/mmc.h: remove CVS tags

2008-07-15T12:14:41+00:00

This patch removes a CVS tag that wasn't updated for a long time. Signed-off-by: Adrian Bunk Signed-off-by: Pierre Ossman

MMC headers learn about SPI

2007-09-23T19:37:51+00:00

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

mmc: read ext_csd version number

2007-09-23T07:14:53+00:00

Make sure we do not try to parse a structure we do not understand. Signed-off-by: Pierre Ossman

mmc: Separate out protocol ops

2007-05-01T11:04:18+00:00

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

mmc: Move core functions to subdir

2007-05-01T11:04:18+00:00

Create a "core" subdirectory to house the central bus handling functions. Signed-off-by: Pierre Ossman

mmc: deprecate mmc bus topology

2007-05-01T11:04:18+00:00

The classic MMC bus was defined as multi card bus system, which is reflected in the design in the MMC layer. When SD showed up, the bus topology was abandoned and a star topology (one card per host) was mandated. MMC version 4 has followed this, officially deprecating the bus topology. As we do not have any known users of the bus topology we can remove support for it. This will simplify the code and rectify some incorrect assumptions in the newer additions. Signed-off-by: Pierre Ossman

mmc: Add support for SDHC cards

2007-02-04T19:54:07+00:00

Thanks to the generous donation of an SDHC card by John Gilmore, and the surprisingly enlightened decision by the SD Card Association to publish useful specs, I've been able to bash out support for SDHC. The changes are not too profound: i) Add a card flag indicating the card uses block level addressing and check it in the block driver. As we never took advantage of byte-level addressing, this simply involves skipping the block -> byte translation when sending commands. ii) The layout of the CSD is changed - a set of fields are discarded to make space for a larger C_SIZE. We did not reference any of the discarded fields except those related to the C_SIZE. iii) Read and write timeouts are fixed values and not calculated from CSD values. iv) Before invoking SEND_APP_OP_COND, we must invoke the new SEND_IF_COND to inform the card we support SDHC. Signed-off-by: Philipl Langdale Signed-off-by: Pierre Ossman