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authorSimon Horman <horms@verge.net.au>2011-06-21 08:00:10 +0900
committerChris Ball <cjb@laptop.org>2011-07-20 17:20:57 -0400
commit973ed3af1a570612771ed10dec6506c757767668 (patch)
treedb993034cacfcc3f3388c43d96459a123adc32a2 /include/linux/mfd/tmio.h
parenta11862d3389d4304211eed0758f510d5e573f93c (diff)
mmc: sdhi: Add write16_hook
Some controllers require waiting for the bus to become idle before writing to some registers. I have implemented this by adding a hook to sd_ctrl_write16() and implementing a hook for SDHI which waits for the bus to become idle. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mfd/tmio.h')
-rw-r--r--include/linux/mfd/tmio.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index 5a90266c3a5a..0dc98044d8b7 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -68,6 +68,11 @@
* controller and report the event to the driver.
*/
#define TMIO_MMC_HAS_COLD_CD (1 << 3)
+/*
+ * Some controllers require waiting for the SD bus to become
+ * idle before writing to some registers.
+ */
+#define TMIO_MMC_HAS_IDLE_WAIT (1 << 4)
int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
@@ -80,6 +85,8 @@ struct tmio_mmc_dma {
int alignment_shift;
};
+struct tmio_mmc_host;
+
/*
* data for the MMC controller
*/
@@ -94,6 +101,7 @@ struct tmio_mmc_data {
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
int (*get_cd)(struct platform_device *host);
+ int (*write16_hook)(struct tmio_mmc_host *host, int addr);
};
static inline void tmio_mmc_cd_wakeup(struct tmio_mmc_data *pdata)