mmc: check the revision for sd3.0

Support to check whether the SD3.0 or not.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Rommel Custodio <sessyargc@gmail.com>

drivers/mmc/mmc.c

@@ -784,6 +784,8 @@ retry_scr:
 			break;
 		case 2:
 			mmc->version = SD_VERSION_2;
+			if ((mmc->scr[0] >> 15) & 0x1)
+				mmc->version = SD_VERSION_3;
 			break;
 		default:
 			mmc->version = SD_VERSION_1_0;

include/mmc.h

@@ -30,6 +30,7 @@
 #include <linux/compiler.h>
 
 #define SD_VERSION_SD	0x20000
+#define SD_VERSION_3	(SD_VERSION_SD | 0x300)
 #define SD_VERSION_2	(SD_VERSION_SD | 0x200)
 #define SD_VERSION_1_0	(SD_VERSION_SD | 0x100)
 #define SD_VERSION_1_10	(SD_VERSION_SD | 0x10a)