mmc: add led trigger

Add a led trigger for each host controller that indicates if there
is a request active on the controller.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 76eef94782f8..125eee1407ff 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -10,6 +10,8 @@
 #ifndef LINUX_MMC_HOST_H
 #define LINUX_MMC_HOST_H
 
+#include <linux/leds.h>
+
 #include <linux/mmc/core.h>
 
 struct mmc_ios {
@@ -133,6 +135,10 @@ struct mmc_host {
         struct task_struct      *sdio_irq_thread;
         atomic_t                sdio_irq_thread_abort;
 
+#ifdef CONFIG_LEDS_TRIGGERS
+        struct led_trigger      *led;           /* activity led */
+#endif
+
         unsigned long           private[0] ____cacheline_aligned;
 };