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[MMC] sdhci: proper timeout handling

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Use the give timeout clock and calculate a proper timeout instead of using the
maximum at all times.

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>
This commit is contained in:
Pierre Ossman
2006-06-30 02:22:25 -07:00
committed by Russell King
parent e16514d8d8
commit 1c8cde92fa
2 changed files with 48 additions and 3 deletions
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4
drivers/mmc/sdhci.h
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@@ -125,6 +125,9 @@
/* 3E-3F reserved */
#define SDHCI_CAPABILITIES 0x40
#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
#define SDHCI_TIMEOUT_CLK_SHIFT 0
#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
#define SDHCI_CLOCK_BASE_MASK 0x00003F00
#define SDHCI_CLOCK_BASE_SHIFT 8
#define SDHCI_CAN_DO_DMA 0x00400000
@@ -156,6 +159,7 @@ struct sdhci_host {
#define SDHCI_USE_DMA (1<<0)
unsigned int max_clk; /* Max possible freq (MHz) */
unsigned int timeout_clk; /* Timeout freq (KHz) */
unsigned int clock; /* Current clock (MHz) */
unsigned short power; /* Current voltage */