[MMC] sdhci: check controller version

Check the interface version of the controller and bail out if it's an unknown
version.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h
index b1aa3acf0906..758cf1c24364 100644
--- a/drivers/mmc/sdhci.h
+++ b/drivers/mmc/sdhci.h
@@ -149,6 +149,10 @@
 #define SDHCI_SLOT_INT_STATUS   0xFC
 
 #define SDHCI_HOST_VERSION      0xFE
+#define  SDHCI_VENDOR_VER_MASK  0xFF00
+#define  SDHCI_VENDOR_VER_SHIFT 8
+#define  SDHCI_SPEC_VER_MASK    0x00FF
+#define  SDHCI_SPEC_VER_SHIFT   0
 
 struct sdhci_chip;