sdio: core support for SDIO function interrupt

Signed-off-by: Nicolas Pitre <npitre@mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

2 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 8e2642ebf02f..00dc1809494c 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -123,6 +123,10 @@ struct mmc_host {
         unsigned int            bus_refs;       /* reference counter */
         unsigned int            bus_dead:1;     /* bus has been released */
 
+        unsigned int            sdio_irqs;
+        struct task_struct      *sdio_irq_thread;
+        atomic_t                sdio_irq_thread_abort;
+
         unsigned long           private[0] ____cacheline_aligned;
 };
 
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index 8106d399c414..a8d268c9c276 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -16,6 +16,9 @@
 #include <linux/mod_devicetable.h>
 
 struct mmc_card;
+struct sdio_func;
+
+typedef void (sdio_irq_handler_t)(struct sdio_func *);
 
 /*
  * SDIO function CIS tuple (unknown to the core)
@@ -33,6 +36,7 @@ struct sdio_func_tuple {
 struct sdio_func {
         struct mmc_card         *card;          /* the card this device belongs to */
         struct device           dev;            /* the device */
+        sdio_irq_handler_t      *irq_handler;   /* IRQ callback */
         unsigned int            num;            /* function number */
 
         unsigned char           class;          /* standard interface class */
@@ -105,6 +109,9 @@ extern void sdio_release_host(struct sdio_func *func);
 extern int sdio_enable_func(struct sdio_func *func);
 extern int sdio_disable_func(struct sdio_func *func);
 
+extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
+extern int sdio_release_irq(struct sdio_func *func);
+
 extern unsigned char sdio_readb(struct sdio_func *func,
         unsigned int addr, int *err_ret);