user/sven/linux.git/include/linux/mmc/card.h, branch v4.9.80

mmc: sd: Export SD Status via “ssr” device attribute

2016-09-26T19:31:09Z

The SD Status register contains several important fields related to the SD Card proprietary features. Those fields may be used by user space applications for vendor specific usage. None of those fields are exported today by the driver to user space. In this patch, we are reading the SD Status register and exporting (using MMC_DEV_ATTR) the SD Status register to the user space. Signed-off-by: Uri Yanai Signed-off-by: Ulf Hansson

mmc: core: Disable HPI for certain Hynix eMMC cards

2016-07-25T08:34:12Z

Certain Hynix eMMC 4.41 cards might get broken when HPI feature is used and hence this patch disables the HPI feature for such buggy cards. As some of the other features like BKOPs/Cache/Sanitize are dependent on HPI feature, those features would also get disabled if HPI is disabled. Signed-off-by: Pratibhasagar V Signed-off-by: Subhash Jadavani [gdavis: Forward port and cleanup] Signed-off-by: George G. Davis Signed-off-by: Ulf Hansson

mmc: core: implement enhanced strobe support

2016-07-25T08:34:05Z

Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host controllers. This new feature is optional, so it depends both on device's cap and host's cap to decide whether to use it or not. Signed-off-by: Shawn Lin Reviewed-by: Jaehoon Chung Tested-by: Douglas Anderson Tested-by: Jaehoon Chung Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: core: Remove MMC_CLKGATE

2015-10-26T15:00:09Z

MMC_CLKGATE was once invented to save power by gating the bus clock at request inactivity. At that time it served its purpose. The modern way to deal with power saving for these scenarios, is by using runtime PM. Nowadays, several host drivers have deployed runtime PM, but for those that haven't and which still cares power saving at request inactivity, it's certainly time to deploy runtime PM as it has been around for several years now. To simplify code to mmc core and thus decrease maintenance efforts, this patch removes all code related to MMC_CLKGATE. Signed-off-by: Ulf Hansson Reviewed-by: Linus Walleij

mmc: block: skip trim for some kingston eMMCs

2015-08-27T12:50:52Z

For some mass production of kingston eMMCs which adopt Phison's firmware will meet an unrecoverable data conrruption occasionally if performing trim due to a firmware bug confirmed by vendor. We found it on Intel-C3230RK platform. So we add fixup of broken trim for it. Signed-off-by: Shawn Lin Signed-off-by: Ulf Hansson

mmc: core: Optimize case for exactly one erase-group budget

2015-08-17T09:32:39Z

In the (not so unlikely) case that the mmc controller timeout budget is enough for exactly one erase-group, the simplification of allowing one sector has an enormous performance penalty. We optimize this special case by introducing a flag that prohibits erase-group boundary crossing, so that we can allow trimming more than one sector at a time. Signed-off-by: David Jander Signed-off-by: Ulf Hansson

mmc: mmc: Read card's valid driver strength mask

2015-06-01T07:07:13Z

In preparation for supporing drive strength selection for eMMC, read the card's valid driver strengths. Note that though the SD spec uses the term "drive strength", the JEDEC eMMC spec uses the term "driver strength". Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: core: Record card drive strength

2015-06-01T07:07:13Z

In preparation for adding drive strength support for eMMC, add drive_strength to struct mmc_card to record the card drive strength for UHS-I modes and HS200 / HS400. For eMMC this will be needed when switching between HS200 and HS400. Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson

Revert "mmc: core: Convert mmc_driver to device_driver"

2015-04-17T09:48:01Z

This reverts commit 6685ac62b2f0 ("mmc: core: Convert mmc_driver to device_driver") The reverted commit went too far in simplifing the device driver parts for mmc. Let's restore the old mmc_driver to enable driver core to sooner or later to remove the ->probe(), ->remove() and ->shutdown() callbacks from the struct device_driver. Note that, the old ->suspend|resume() callbacks in the struct mmc_driver don't need to be restored, since the mmc block layer has converted to the modern system PM ops. Fixes: 6685ac62b2f0 ("mmc: core: Convert mmc_driver to device_driver") Signed-off-by: Ulf Hansson Acked-by: Jaehoon Chung

mmc: Resolve BKOPS compatability issue

2015-01-29T10:15:12Z

This patch is coming to fix compatibility issue of BKOPS_EN field of EXT_CSD. In eMMC-5.1, BKOPS_EN was changed, and now it has two operational bits: Bit 0 - MANUAL_EN Bit 1 - AUTO_EN In previous eMMC revisions, only Bit 0 was supported. Signed-off-by: Alexey Skidanov Signed-off-by: Ulf Hansson