kernel/linux.git/drivers/mmc/core/sd.c, branch linux-4.16.y

mmc: core: prepend 0x to OCR entry in sysfs

2017-11-29T09:46:53+00:00

The sysfs entry "ocr" was missing the 0x prefix to identify it as hex formatted. Fixes: 5fb06af7a33b ("mmc: core: Extend sysfs with OCR register") Signed-off-by: Bastian Stender Cc: # v4.8+ [Ulf: Amended change to also cover SD-cards] Signed-off-by: Ulf Hansson

mmc: sd: Fix signal voltage when there is no power cycle

2017-10-30T10:45:57+00:00

Some boards have SD card connectors where the power rail cannot be switched off by the driver. However there are various circumstances when a card might be re-initialized, such as after system resume, warm re-boot, or error handling. However, a UHS card will continue to use 1.8V signaling unless it is power cycled. If the card has not been power cycled, it may still be using 1.8V signaling. According to the SD spec., the Bus Speed Mode (function group 1) bits 2 to 4 are zero if the card is initialized at 3.3V signal level. Thus they can be used to determine if the card has already switched to 1.8V signaling. Detect that situation and try to initialize a UHS-I (1.8V) transfer mode. Tested with the following cards: Transcend 4GB High Speed Kingston 64GB SDR104 Lexar by Micron HIGH-PERFORMANCE 300x 16GB DDR50 SanDisk Ultra 8GB DDR50 Transcend Ultimate 600x 16GB SDR104 Transcend Premium 300x 64GB SDR104 Lexar by Micron Professional 1000x 32GB UHS-II SDR104 SanDisk Extreme Pro 16GB SDR104 Signed-off-by: Adrian Hunter Tested-by: Zhoujie Wu Reviewed-by: Shawn Lin Signed-off-by: Ulf Hansson

mmc: core: Introduce host claiming by context

2017-10-30T10:45:49+00:00

Currently the host can be claimed by a task. Change this so that the host can be claimed by a context that may or may not be a task. This provides for the host to be claimed by a block driver queue to support blk-mq, while maintaining compatibility with the existing use of mmc_claim_host(). Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: core: correct taac parameter according to the specification

2017-08-30T12:01:46+00:00

Per the spec of JESD84-B51, section 7.3, replace tacc with taac to fix the obvious typo. Signed-off-by: Shawn Lin Signed-off-by: Ulf Hansson

mmc: core: Re-factor code for sending CID

2017-06-20T08:30:45+00:00

Instead of having the caller to check for SPI mode, let's leave that to internals of mmc_send_cid(). In this way the code gets cleaner and it becomes clear what is specific to SPI and non-SPI mode. Signed-off-by: Ulf Hansson Reviewed-by: Linus Walleij Reviewed-by: Shawn Lin

mmc: core: Delete error messages for failed memory allocations

2017-06-20T08:30:21+00:00

Omit an extra message for memory allocation failures. This issue was detected by using the Coccinelle software. Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf Signed-off-by: Markus Elfring Signed-off-by: Ulf Hansson

mmc: core: add proper be32 annotation

2017-04-24T19:42:19+00:00

Annotate big endian values correctly and make sparse happy. In mmc_app_send_scr remove scr function parameter as it was updating card->raw_scr anyway. Signed-off-by: Tomas Winkler Signed-off-by: Ulf Hansson

mmc: core: Clarify usage of mmc_set_signal_voltage()

2017-02-13T12:20:43+00:00

The mmc_set_signal_voltage() function is used for SD/SDIO when switching to 1.8V for UHS mode. To clarify this let's do the following changes. - We are always providing MMC_SIGNAL_VOLTAGE_180 as the signal_voltage parameter to the function. Then, let's just remove the parameter as it serves no purpose. - Rename the function to mmc_set_uhs_voltage(). Signed-off-by: Ulf Hansson Reviewed-by: Shawn Lin Tested-by: Jan Glauber Tested-by: Stefan Wahren

mmc: core: Move public functions from host.h to private headers

2017-02-13T12:20:25+00:00

A significant amount of functions are available through the public mmc host.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions to private mmc host.h header file. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups. Signed-off-by: Ulf Hansson Reviewed-by: Linus Walleij Reviewed-by: Shawn Lin

mmc: core: Move public functions from card.h to private headers

2017-02-13T12:20:24+00:00

A significant amount of functions and other definitions are available through the public mmc card.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions/definitions to private mmc header files. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups. Signed-off-by: Ulf Hansson Reviewed-by: Linus Walleij Reviewed-by: Shawn Lin