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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-02-23 11:08:06 +0000
committerSamuel Ortiz <sameo@linux.intel.com>2010-03-07 22:17:34 +0100
commit473fe73650b9f92114edbedfbb616561c1a0026c (patch)
tree24e4a0ee61eb73b990055a6b0f427e430d4d5234 /include/linux/mfd/wm831x
parentd19663ac61a6e36eec655d3c84a106686ebddd2c (diff)
downloadblackbird-op-linux-473fe73650b9f92114edbedfbb616561c1a0026c.tar.gz
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mfd: Use completion interrupt for WM831x AUXADC
Use the completion interrupt generated by the device rather than polling for conversions to complete. As a backup we still check the status of the AUXADC if we don't get a completion, mostly for systems that don't have the WM831x interrupt infrastructure hooked up. Also reduce the timeout for completion of conversions to 5ms from the previous 10ms, the lower timeout should be sufficient. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux/mfd/wm831x')
-rw-r--r--include/linux/mfd/wm831x/core.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h
index 53580b592bc9..5915f6e3d9ab 100644
--- a/include/linux/mfd/wm831x/core.h
+++ b/include/linux/mfd/wm831x/core.h
@@ -15,6 +15,7 @@
#ifndef __MFD_WM831X_CORE_H__
#define __MFD_WM831X_CORE_H__
+#include <linux/completion.h>
#include <linux/interrupt.h>
/*
@@ -261,6 +262,7 @@ struct wm831x {
int num_gpio;
struct mutex auxadc_lock;
+ struct completion auxadc_done;
/* The WM831x has a security key blocking access to certain
* registers. The mutex is taken by the accessors for locking
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