kernel.git/drivers/mmc/core/sdio.c, branch linux-3.17.y

mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread

2014-11-14T18:10:22Z

commit dea67c4ec8218b301d7cac7ee6e63dac0bc566cb upstream. 781e989cf59 ("mmc: sdhci: convert to new SDIO IRQ handling") and bf3b5ec66bd ("mmc: sdio_irq: rework sdio irq handling") disabled the use of our own custom threaded IRQ handler, but left in an unconditional wake_up_process() on that handler at resume-time. Link: https://bugzilla.kernel.org/show_bug.cgi?id=80151 In addition, the check for MMC_CAP_SDIO_IRQ capability is added before enable sdio IRQ. Signed-off-by: Jaehoon Chung Signed-off-by: Chris Ball Signed-off-by: Fu Zhonghui Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

mmc: drop the speed mode of card's state

2014-05-12T22:05:53Z

Timing mode identifier has same role and can take the place of speed mode. This change removes all related speed mode. Signed-off-by: Seungwon Jeon Tested-by: Jaehoon Chung Acked-by: Jaehoon Chung Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Invoke sdio func driver's PM callbacks from the sdio bus

2014-04-22T11:06:40Z

The sdio func device is added to the driver model after the card device. This means the sdio func device will be suspend before the card device and thus resumed after. The consequence are the mmc core don't explicity need to protect itself from receiving sdio requests in suspended state. Instead that can be handled from the sdio bus, which is thus invokes the PM callbacks instead of old dummy function. In the case were the sdio func driver don't implement the PM callbacks the mmc core will in the early phase of system suspend, remove the card from the driver model and thus power off it. Cc: Aaron Lu Cc: NeilBrown Cc: Rafael J. Wysocki Signed-off-by: Ulf Hansson Reviewed-by: Aaron Lu Tested-by: xiaoming wang Tested-by: Chuanxiao Dong Signed-off-by: Chris Ball

mmc: core: Collect common code for card ocr validation

2013-10-31T00:26:31Z

Since mmc_select_voltage now only gets called from the attach sequence, it makes sense to move the out of spec validations of the card ocr into this function. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Prevent violation of specs while initializing cards

2013-10-31T00:26:30Z

According to eMMC/SD/SDIO specs, the VDD (VCC) voltage level must be maintained during the initialization sequence. If we want/need to tune the voltage level, a complete power cycle of the card must be executed. Most host drivers conforms to the specifications by only allowing to change VDD voltage level at the MMC_POWER_UP state, but some also cares about MMC_POWER_ON state, which they should'nt. This patch will not break those drivers, but they could clean up code to better reflect what is expected from the protocol layer. A big re-work of the mmc_select_voltage function is done to only change VDD voltage level if the host supports MMC_CAP2_FULL_PWR_CYCLE. Otherwise only validation of the host and card ocr mask will be done. A very nice side-effect of this patch is that we now don't need to reset the negotiated ocr mask at the mmc_power_off function, since now it will actually reflect the present voltage level, which safely can be used at the next power up and re-initialization. Moreover, we then only need to execute mmc_select_voltage from the attach sequence. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Move cached value of the negotiated ocr mask to card struct

2013-10-31T00:26:29Z

The negotiated ocr mask is directly related to the card. Once a card gets removed, the mask shall be dropped. By moving the cache of the ocr mask from the host struct to the card struct we have accomplished this. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Cleanup code for setting ocr mask for SDIO

2013-10-31T00:26:28Z

At several places in mmc_sdio_init_card function the cached mask in host->ocr were being updated. To simplify code, we make use of an local ocr parameter instead. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Remove unnecessary retry mechanism at SDIO attach

2013-10-31T00:26:27Z

The retry and fallback mechanism when failing to switch to 1.8V signaling voltage is handled by the SDIO card init function. Thus we can remove the duplicated old code from the attach function. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Let mmc_set_signal_voltage take ocr as parameter

2013-10-31T00:26:26Z

This is yet another step of restructure code to be able to fixup the setup of the negotiated ocr mask. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball

mmc: core: Let mmc_power_up|cycle take ocr as parameter

2013-10-31T00:26:25Z

As a step to fixup the setup of the negotiated ocr mask, we need the mmc_power_up|cycle functions to take the ocr as a parameter. Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball