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authorPantelis Antoniou <pantelis.antoniou@konsulko.com>2015-01-23 12:12:01 +0200
committerPantelis Antoniou <pantelis.antoniou@konsulko.com>2015-02-23 19:34:29 +0200
commit4b7cee533630202095748ecb396bd9eacf47ff3f (patch)
tree00c86c2dcc3e72286fdece81acf823b0e3e60205 /include/mmc.h
parent46414296953410706e917cef9238926084e83a4b (diff)
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mmc: Implement SD/MMC versioning properly
The SD/MMC version scheme was buggy when dealing with standard major.minor.change cases. Fix it by using something similar to the linux's kernel versioning method. Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Reported-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'include/mmc.h')
-rw-r--r--include/mmc.h56
1 files changed, 37 insertions, 19 deletions
diff --git a/include/mmc.h b/include/mmc.h
index 56d97bb..7d6feca 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -14,24 +14,41 @@
#include <linux/compiler.h>
#include <part.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)
-#define MMC_VERSION_MMC 0x10000
-#define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
-#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x102)
-#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x104)
-#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x202)
-#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x300)
-#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x400)
-#define MMC_VERSION_4_1 (MMC_VERSION_MMC | 0x401)
-#define MMC_VERSION_4_2 (MMC_VERSION_MMC | 0x402)
-#define MMC_VERSION_4_3 (MMC_VERSION_MMC | 0x403)
-#define MMC_VERSION_4_41 (MMC_VERSION_MMC | 0x429)
-#define MMC_VERSION_4_5 (MMC_VERSION_MMC | 0x405)
-#define MMC_VERSION_5_0 (MMC_VERSION_MMC | 0x500)
+/* SD/MMC version bits; 8 flags, 8 major, 8 minor, 8 change */
+#define SD_VERSION_SD (1U << 31)
+#define MMC_VERSION_MMC (1U << 30)
+
+#define MAKE_SDMMC_VERSION(a, b, c) \
+ ((((u32)(a)) << 16) | ((u32)(b) << 8) | (u32)(c))
+#define MAKE_SD_VERSION(a, b, c) \
+ (SD_VERSION_SD | MAKE_SDMMC_VERSION(a, b, c))
+#define MAKE_MMC_VERSION(a, b, c) \
+ (MMC_VERSION_MMC | MAKE_SDMMC_VERSION(a, b, c))
+
+#define EXTRACT_SDMMC_MAJOR_VERSION(x) \
+ (((u32)(x) >> 16) & 0xff)
+#define EXTRACT_SDMMC_MINOR_VERSION(x) \
+ (((u32)(x) >> 8) & 0xff)
+#define EXTRACT_SDMMC_CHANGE_VERSION(x) \
+ ((u32)(x) & 0xff)
+
+#define SD_VERSION_3 MAKE_SD_VERSION(3, 0, 0)
+#define SD_VERSION_2 MAKE_SD_VERSION(2, 0, 0)
+#define SD_VERSION_1_0 MAKE_SD_VERSION(1, 0, 0)
+#define SD_VERSION_1_10 MAKE_SD_VERSION(1, 10, 0)
+
+#define MMC_VERSION_UNKNOWN MAKE_MMC_VERSION(0, 0, 0)
+#define MMC_VERSION_1_2 MAKE_MMC_VERSION(1, 2, 0)
+#define MMC_VERSION_1_4 MAKE_MMC_VERSION(1, 4, 0)
+#define MMC_VERSION_2_2 MAKE_MMC_VERSION(2, 2, 0)
+#define MMC_VERSION_3 MAKE_MMC_VERSION(3, 0, 0)
+#define MMC_VERSION_4 MAKE_MMC_VERSION(4, 0, 0)
+#define MMC_VERSION_4_1 MAKE_MMC_VERSION(4, 1, 0)
+#define MMC_VERSION_4_2 MAKE_MMC_VERSION(4, 2, 0)
+#define MMC_VERSION_4_3 MAKE_MMC_VERSION(4, 3, 0)
+#define MMC_VERSION_4_41 MAKE_MMC_VERSION(4, 4, 1)
+#define MMC_VERSION_4_5 MAKE_MMC_VERSION(4, 5, 0)
+#define MMC_VERSION_5_0 MAKE_MMC_VERSION(5, 0, 0)
#define MMC_MODE_HS (1 << 0)
#define MMC_MODE_HS_52MHz (1 << 1)
@@ -43,7 +60,8 @@
#define SD_DATA_4BIT 0x00040000
-#define IS_SD(x) (x->version & SD_VERSION_SD)
+#define IS_SD(x) ((x)->version & SD_VERSION_SD)
+#define IS_MMC(x) ((x)->version & SD_VERSION_MMC)
#define MMC_DATA_READ 1
#define MMC_DATA_WRITE 2