1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 9a0893f3249e..30f68c0c8c6e 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -46,6 +46,12 @@ struct mmc_ios {
 #define MMC_BUSMODE_OPENDRAIN   1
 #define MMC_BUSMODE_PUSHPULL    2
 
+        unsigned char   chip_select;            /* SPI chip select */
+
+#define MMC_CS_DONTCARE         0
+#define MMC_CS_HIGH             1
+#define MMC_CS_LOW              2
+
         unsigned char   power_mode;             /* power supply mode */
 
 #define MMC_POWER_OFF           0