[MMC] sdhci: support for multiple voltages
The sdhci controllers can support up to three voltage levels. Detect which
and report back to the MMC layer.
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>
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h
index 3b270ef..aed4abd 100644
--- a/drivers/mmc/sdhci.h
+++ b/drivers/mmc/sdhci.h
@@ -67,6 +67,10 @@
#define SDHCI_CTRL_4BITBUS 0x02
#define SDHCI_POWER_CONTROL 0x29
+#define SDHCI_POWER_ON 0x01
+#define SDHCI_POWER_180 0x0A
+#define SDHCI_POWER_300 0x0C
+#define SDHCI_POWER_330 0x0E
#define SDHCI_BLOCK_GAP_CONTROL 0x2A
@@ -121,9 +125,12 @@
/* 3E-3F reserved */
#define SDHCI_CAPABILITIES 0x40
-#define SDHCI_CAN_DO_DMA 0x00400000
#define SDHCI_CLOCK_BASE_MASK 0x00003F00
#define SDHCI_CLOCK_BASE_SHIFT 8
+#define SDHCI_CAN_DO_DMA 0x00400000
+#define SDHCI_CAN_VDD_330 0x01000000
+#define SDHCI_CAN_VDD_300 0x02000000
+#define SDHCI_CAN_VDD_180 0x04000000
/* 44-47 reserved for more caps */
@@ -151,6 +158,7 @@
unsigned int max_clk; /* Max possible freq (MHz) */
unsigned int clock; /* Current clock (MHz) */
+ unsigned short power; /* Current voltage */
struct mmc_request *mrq; /* Current request */
struct mmc_command *cmd; /* Current command */