1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 30f68c0c8c6e..6014160d9c06 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -57,11 +57,17 @@ struct mmc_ios {
 #define MMC_POWER_OFF           0
 #define MMC_POWER_UP            1
 #define MMC_POWER_ON            2
+
+        unsigned char   bus_width;              /* data bus width */
+
+#define MMC_BUS_WIDTH_1         0
+#define MMC_BUS_WIDTH_4         2
 };
 
 struct mmc_host_ops {
         void    (*request)(struct mmc_host *host, struct mmc_request *req);
         void    (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
+        int     (*get_ro)(struct mmc_host *host);
 };
 
 struct mmc_card;
@@ -76,6 +82,10 @@ struct mmc_host {
         unsigned int            f_max;
         u32                     ocr_avail;
 
+        unsigned long           caps;           /* Host capabilities */
+
+#define MMC_CAP_4_BIT_DATA      (1 << 0)        /* Can the host do 4 bit transfers */
+
         /* host specific block data */
         unsigned int            max_seg_size;   /* see blk_queue_max_segment_size */
         unsigned short          max_hw_segs;    /* see blk_queue_max_hw_segments */
@@ -87,6 +97,10 @@ struct mmc_host {
         struct mmc_ios          ios;            /* current io bus settings */
         u32                     ocr;            /* the current OCR setting */
 
+        unsigned int            mode;           /* current card mode of host */
+#define MMC_MODE_MMC            0
+#define MMC_MODE_SD             1
+
         struct list_head        cards;          /* devices attached to this host */
 
         wait_queue_head_t       wq;