mmc: add a card-event host operation

Some hosts need to perform additional actions upon card insertion or
ejection. Add a host operation to be called from card detection handlers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 23df21e5826b..61a10c17aabd 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -136,6 +136,7 @@ struct mmc_host_ops {
         void    (*enable_preset_value)(struct mmc_host *host, bool enable);
         int     (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv);
         void    (*hw_reset)(struct mmc_host *host);
+        void    (*card_event)(struct mmc_host *host);
 };
 
 struct mmc_card;