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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2008-06-17 18:17:21 +0400 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2008-07-15 14:14:41 +0200 |
| commit | 619ef4b42128709de4d89d209b2c874f560deecd (patch) | |
| tree | 9c813630ed396b5efb590303c84a1f2935502ca7 /include/linux/spi | |
| parent | 28f52482b41edc88cdf575aa6ed414c6e116ce10 (diff) | |
| download | op-kernel-dev-619ef4b42128709de4d89d209b2c874f560deecd.zip op-kernel-dev-619ef4b42128709de4d89d209b2c874f560deecd.tar.gz | |
mmc_spi: add support for card-detection polling
This patch adds new platform data variable "caps", so platforms
could pass theirs capabilities into MMC core (for example, platforms
without interrupt on the CD line will most probably want to pass
MMC_CAP_NEEDS_POLL).
New platform get_cd() callback provided to optimize polling.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/mmc_spi.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/spi/mmc_spi.h b/include/linux/spi/mmc_spi.h index d5ca78b..a3626ae 100644 --- a/include/linux/spi/mmc_spi.h +++ b/include/linux/spi/mmc_spi.h @@ -23,6 +23,15 @@ struct mmc_spi_platform_data { /* sense switch on sd cards */ int (*get_ro)(struct device *); + /* + * If board does not use CD interrupts, driver can optimize polling + * using this function. + */ + int (*get_cd)(struct device *); + + /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ + unsigned long caps; + /* how long to debounce card detect, in msecs */ u16 detect_delay; |
