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-rw-r--r--include/linux/mmc/host.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 7ab962fa1d73..6188e19d2331 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -51,8 +51,18 @@ struct mmc_ios {
struct mmc_host_ops {
void (*request)(struct mmc_host *host, struct mmc_request *req);
+ /*
+ * Avoid calling these three functions too often or in a "fast path",
+ * since underlaying controller might implement them in an expensive
+ * and/or slow way.
+ *
+ * Also note that these functions might sleep, so don't call them
+ * in the atomic contexts!
+ */
void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
int (*get_ro)(struct mmc_host *host);
+ int (*get_cd)(struct mmc_host *host);
+
void (*enable_sdio_irq)(struct mmc_host *host, int enable);
};
@@ -94,6 +104,7 @@ struct mmc_host {
#define MMC_CAP_SD_HIGHSPEED (1 << 3) /* Can do SD high-speed timing */
#define MMC_CAP_SDIO_IRQ (1 << 4) /* Can signal pending SDIO IRQs */
#define MMC_CAP_SPI (1 << 5) /* Talks only SPI protocols */
+#define MMC_CAP_NEEDS_POLL (1 << 6) /* Needs polling for card-detection */
/* host specific block data */
unsigned int max_seg_size; /* see blk_queue_max_segment_size */