From 619ef4b42128709de4d89d209b2c874f560deecd Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Tue, 17 Jun 2008 18:17:21 +0400 Subject: 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 Signed-off-by: Pierre Ossman --- include/linux/spi/mmc_spi.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux/spi') diff --git a/include/linux/spi/mmc_spi.h b/include/linux/spi/mmc_spi.h index d5ca78b93a3b..a3626aedaec9 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; -- cgit v1.2.2