lwn.git/drivers/mmc/host/sdhci.c, branch standardize-docs

mmc: sdhci: Control the delay between tuning commands

2017-04-24T19:42:27+00:00

The delay between tuning commands for SD cards is not part of the specification. A driver that needs it probably needs it for eMMC too, whereas most drivers would probably like to set it to 0. Make it a host member (host->tuning_delay) that defaults to the existing behaviour. Drivers can set it to zero to eliminate the delay, or set it to a positive value to always have a delay. Signed-off-by: Adrian Hunter Signed-off-by: Yangbo Lu Signed-off-by: Ulf Hansson

mmc: sdhci: Export sdhci_enable_sdio_irq() from sdhci.c

2017-04-24T19:42:14+00:00

Export sdhci_enable_sdio_irq() from sdhci.c. Thus vendor SDHC driver can implement its specific SDIO irq control. Signed-off-by: Hu Ziji Signed-off-by: Gregory CLEMENT Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: sdhci: Export sdhci_start_signal_voltage_switch() in sdhci.c

2017-04-24T19:42:14+00:00

Export sdhci_start_signal_voltage_switch() from sdhci.c. Thus vendor sdhci driver can implement its own signal voltage switch routine. Signed-off-by: Hu Ziji Signed-off-by: Gregory CLEMENT Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: sdhci: Export sdhci_set_ios() from sdhci.c

2017-04-24T19:42:13+00:00

Export sdhci_set_ios() in sdhci.c. Thus vendor sdhci driver can implement its own set_ios() routine. Signed-off-by: Hu Ziji Signed-off-by: Gregory CLEMENT Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: use new core function mmc_get_dma_dir

2017-04-24T19:41:52+00:00

Use new core function mmc_get_dma_dir(). Signed-off-by: Heiner Kallweit Signed-off-by: Ulf Hansson

mmc: sdhci: clarify the get_timeout_clock callback

2017-04-24T19:41:48+00:00

Currently the get_timeout_clock callback doesn't clearly have a statement that it needs the variant drivers to return the timeout clock rate in kHz if the SDHCI_TIMEOUT_CLK_UNIT isn't present, otherwise the variant drivers should return it in MHz. It's also very likely that further variant drivers which are going to use this callback will be confused by this situation. Given the fact that moderm sdhci variant hosts are very prone to get the timeout clock from common clock framework (actually the only three users did that), it's more natural to return the value in Hz and we make an explicit comment there. Then we put the unit conversion inside the sdhci core. Thus will improve the code and prevent further misuses. Reported-by: Anssi Hannula Signed-off-by: Shawn Lin Acked-by: Masahiro Yamada Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson

mmc: sdhci: Add CQE support

2017-04-24T19:41:36+00:00

Add an interrupt hook and helper functions for enabling, disabling and delivering interrupts to a CQE. Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson Tested-by: Ludovic Desroches

mmc: sdhci: Factor out sdhci_set_default_irqs

2017-04-24T19:41:35+00:00

Factor out sdhci_set_default_irqs(). Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson Tested-by: Ludovic Desroches

mmc: sdhci: Add sdhci_cleanup_host

2017-04-24T19:41:34+00:00

Add sdhci_cleanup_host() to cleanup __sdhci_add_host(). Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson Tested-by: Ludovic Desroches

mmc: sdhci: Export sdhci_dumpregs

2017-04-24T19:41:33+00:00

Export sdhci_dumpregs so that it can be called by drivers. Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson Tested-by: Ludovic Desroches