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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2013-05-15 20:53:22 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-05-23 00:09:16 +0100 |
| commit | 0125962000777cd1e2ce53deefb99779d5ee5199 (patch) | |
| tree | a7c3a3c8d7e53391b9b02362407919c7f11045aa /drivers/mmc/host/mmci.h | |
| parent | 9cc639a20fdc0b935e55d4992f93963f95233ca4 (diff) | |
| download | op-kernel-dev-0125962000777cd1e2ce53deefb99779d5ee5199.zip op-kernel-dev-0125962000777cd1e2ce53deefb99779d5ee5199.tar.gz | |
ARM: 7726/1: mmc: mmci: Add card_busy function to improve UHS card support
To verify a signal voltage switch at initialization of UHS cards the
.card_busy callback is used. For some of the ST-variants, card busy
detection on the DAT0 pin is supported.
We extend the variant struct with a busy_detect flag to indicate
support for it. A corresponding busy detect function, which polls the
busy status bit, is then set to the .card_busy callback.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mmc/host/mmci.h')
| -rw-r--r-- | drivers/mmc/host/mmci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index 0b6cc54..69080fa 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -94,6 +94,7 @@ /* Extended status bits for the ST Micro variants */ #define MCI_ST_SDIOIT (1 << 22) #define MCI_ST_CEATAEND (1 << 23) +#define MCI_ST_CARDBUSY (1 << 24) #define MMCICLEAR 0x038 #define MCI_CMDCRCFAILCLR (1 << 0) @@ -110,6 +111,7 @@ /* Extended status bits for the ST Micro variants */ #define MCI_ST_SDIOITC (1 << 22) #define MCI_ST_CEATAENDC (1 << 23) +#define MCI_ST_BUSYENDC (1 << 24) #define MMCIMASK0 0x03c #define MCI_CMDCRCFAILMASK (1 << 0) |
