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path: root/drivers/mmc/core/sdio.c
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2008-03-22mmc: use sysfs groups to handle conditional attributesPierre Ossman
Suppressing uevents turned out to be a bad idea as it screws up the order of events, making user space very confused. Change the system to use sysfs groups instead. This is a regression that, for some odd reason, has gone unnoticed for some time. It confuses hal so that the block devices (which have the mmc device as a parent) are not registered. End result being that desktop magic when cards are inserted won't work. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-23MMC core learns about SPIDavid Brownell
Teach the MMC/SD/SDIO core about using SPI mode. - Use mmc_host_is_spi() so enumeration works through SPI signaling and protocols, not just the native versions. - Provide the SPI response type flags with each request issued, including requests from the new lock/unlock code. - Understand that cmd->resp[0] and mmc_get_status() results for SPI return different values than for "native" MMC/SD protocol; this affects resetting, checking card lock status, and some others. - Understand that some commands act a bit differently ... notably: * OP_COND command doesn't return the OCR * APP_CMD status doesn't have an R1_APP_CMD analogue Those changes required some new and updated primitives: - Provide utilities to access two SPI-only requests, and one request that wasn't previously needed: * mmc_spi_read_ocr() ... SPI only * mmc_spi_set_crc() ... SPI only (override by module parm) * mmc_send_cid() ... for use without broadcast mode - Updated internal routines: * Previous mmc_send_csd() modified into mmc_send_cxd_native(); it uses native "R2" responses, which include 16 bytes of data. * Previous mmc_send_ext_csd() becomes new mmc_send_cxd_data() helper for command-and-data access * Bugfix to that mmc_send_cxd_data() code: dma-to-stack is unsafe/nonportable, so kmalloc a bounce buffer instead. - Modified mmc_send_ext_csd() now uses mmc_send_cxd_data() helper - Modified mmc_send_csd(), and new mmc_spi_send_cid(), routines use those helper routines based on whether they're native or SPI The newest categories of cards supported by the MMC stack aren't expected to work yet with SPI: MMC or SD cards with over 4GB data, and SDIO. All those cards support SPI mode, so eventually they should work too. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23mmc: replace BUG_ON with WARN_ONPierre Ossman
Replace all cases of BUG_ON with WARN_ON where there is a chance (with varying degrees of slim) that the kernel can continue without incidence. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23sdio: add SDIO_FBR_BASE(f) macroDavid Vrabel
Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23sdio: enable wide bus modePierre Ossman
Enable 4-bit data bus mode, according to host and card capabilities. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23sdio: change clock speedPierre Ossman
Change clock speed to the highest supported by the card. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23sdio: split up common and function CIS parsingPierre Ossman
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 <drzeus@drzeus.cx>
2007-09-23sdio: initial CIS parsing codeNicolas Pitre
Signed-off-by: Nicolas Pitre <npitre@mvista.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23sdio: basic parsing of FBRPierre Ossman
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23sdio: read and decode interesting parts of the CCCRPierre Ossman
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23mmc: basic SDIO device modelPierre Ossman
Add the sdio bus type and basic device handling. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23mmc: detect SDIO cardsPierre Ossman
Really basic init sequence for SDIO cards. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>