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mfd: Use completion interrupt for WM835x AUXADC

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Use the completion interrupt generated by the device rather than
polling for conversions to complete. As a backup we still check
the state of the AUXADC if we don't get a completion, mostly for
systems that don't have the WM8350 interrupt infrastructure hooked
up.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2010-02-23 11:08:05 +00:00 • committed by Samuel Ortiz
parent 11a441ce82
commit d19663ac61
2 changed files with 31 additions and 6 deletions
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2
include/linux/mfd/wm8350/core.h
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@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/completion.h>
#include <linux/mfd/wm8350/audio.h>
#include <linux/mfd/wm8350/gpio.h>
@ -621,6 +622,7 @@ struct wm8350 {
u16 *reg_cache;
struct mutex auxadc_mutex;
struct completion auxadc_done;
/* Interrupt handling */
struct mutex irq_lock;