user/sven/linux.git/include/linux/mmc, branch v3.9

mmc: sh_mobile_sdhi: remove unused .pdata field

2013-02-24T19:37:22Z

The struct sh_mobile_sdhi_info::pdata field was only used for platform- based card detection and isn't used anymore since the migration to GPIO- based MMC slot functions. Remove it. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball

mmc: (cosmetic) remove "extern" from function declarations

2013-02-24T19:37:20Z

The "extern" keyword isn't required in function declarations, remove it. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball

mmc: provide a standard MMC device-tree binding parser centrally

2013-02-24T19:37:19Z

MMC defines a number of standard DT bindings. Having each driver parse them individually adds code redundancy and is error prone. Provide a standard function to unify the parsing. After all drivers are converted to using it instead of their own parsers, this function can be integrated into mmc_alloc_host(). Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball

mmc: support packed write command for eMMC4.5 devices

2013-02-24T19:37:16Z

This patch supports packed write command of eMMC4.5 devices. Several writes can be grouped in packed command and all data of the individual commands can be sent in a single transfer on the bus. Large amounts of data in one transfer rather than several data of small size are effective for eMMC write internally. As a result, packed command help write throughput be improved. The following tables show the results of packed write. Type A: test none | packed iozone 25.8 | 31 tiotest 27.6 | 31.2 lmdd 31.2 | 35.4 Type B: test none | packed iozone 44.1 | 51.1 tiotest 47.9 | 52.5 lmdd 51.6 | 59.2 Type C: test none | packed iozone 19.5 | 32 tiotest 19.9 | 34.5 lmdd 22.8 | 40.7 Signed-off-by: Seungwon Jeon Reviewed-by: Maya Erez Reviewed-by: Namjae Jeon Signed-off-by: Chris Ball

mmc: add packed command feature of eMMC4.5

2013-02-24T19:37:15Z

This patch adds packed command feature of eMMC4.5. The maximum number for packing read (or write) is offered and exception event relevant to packed command which is used for error handling is enabled. If host wants to use this feature, MMC_CAP2_PACKED_CMD should be set. Signed-off-by: Seungwon Jeon Reviewed-by: Maya Erez Reviewed-by: Subhash Jadavani Reviewed-by: Namjae Jeon Signed-off-by: Chris Ball

mmc: sdhci: enhance preset value function

2013-02-24T19:37:11Z

4d55c5a1 ("mmc: sdhci: enable preset value after uhs initialization") added preset value support and enabled it by default during sd card init. Below are the enhancements introduced by this patch: 1. In current code, preset value is enabled after setting clock finished, which means the clock is manually set by driver firstly and then suddenly switched to preset value at this point. So the first setting is useless and unnecessary. What's more, the first clock setting may differ from the preset one. The better way is enable preset value just after switch to UHS mode so the preset value can take effect immediately. So move preset value enable from mmc_sd_init_card to sdhci_set_ios which will be called during set timing. 2. In current code, preset value is disabled at the beginning of mmc_attach_sd. It's too late since low freq (400khz) should be set in mmc_power_up. So move preset value disable to sdhci_set_ios which will be called during power up. 3. host->clock and ios->drv_type should also be updated according to the preset value if it's enabled. Current code missed this. 4. This patch also introduce a quirk to disable preset value in case preset value doesn't work. This patch has been verified on sdhci-pxav3 platform with both preset enabled and disabled. Signed-off-by: Kevin Liu Reviewed-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Add card_busy to host_ops

2013-02-24T19:37:07Z

This host_ops member is used to test if the card is signaling busy by pulling dat[0:3] low. Signed-off-by: Johan Rudholm Acked-by: Ulf Hansson Tested-by: Wei WANG Signed-off-by: Chris Ball

mmc: dw_mmc: Remove DW_MCI_QUIRK_NO_WRITE_PROTECT

2013-02-24T19:36:55Z

The original quirk was added in the change 'mmc: dw_mmc: add quirk to indicate missing write protect line'. The original quirk was added at a controller level even though each slot has its own write protect (so the quirk should be at the slot level). A recent change (mmc: dw_mmc: Add "disable-wp" device tree property) added a slot-level quirk and support for the quirk directly to dw_mmc. Signed-off-by: Doug Anderson Acked-by: Will Newton Acked-by: Olof Johansson Signed-off-by: Chris Ball

mmc: dw_mmc: Add "disable-wp" device tree property

2013-02-24T19:36:52Z

The "disable-wp" property is used to specify that a given SD card slot doesn't have a concept of write protect. This eliminates the need for special case code for SD slots that should never be write protected (like a micro SD slot or a dev board). The dw_mmc driver is special in needing to specify "disable-wp" because the lack of a "wp-gpios" property means to use the special purpose write protect line. On some other mmc devices the lack of "wp-gpios" means that write protect should be disabled. Signed-off-by: Doug Anderson Acked-by: Seungwon Jeon Acked-by: Will Newton Acked-by: Olof Johansson Signed-off-by: Chris Ball

mmc: correct the EXCEPTION_EVENTS_STATUS value in comment

2013-02-24T19:36:52Z

The right value is 54 according to eMMC 4.5 specification. Signed-off-by: ZhangYi Signed-off-by: Chris Ball