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ASoC: arizona: Add a notifier chain for CODEC events

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Add a notifier chain that can be used from the machine driver to catch
events generated by the CODEC.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax
2016-05-13 16:45:18 +01:00
committed by Mark Brown
parent 1a695a905c
commit 2230c49f09
5 changed files with 57 additions and 0 deletions
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10
include/linux/mfd/arizona/core.h
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@@ -14,6 +14,7 @@
#define _WM_ARIZONA_CORE_H
#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/mfd/arizona/pdata.h>
@@ -148,8 +149,17 @@ struct arizona {
uint16_t dac_comp_coeff;
uint8_t dac_comp_enabled;
struct mutex dac_comp_lock;
struct blocking_notifier_head notifier;
};
static inline int arizona_call_notifiers(struct arizona *arizona,
unsigned long event,
void *data)
{
return blocking_notifier_call_chain(&arizona->notifier, event, data);
}
int arizona_clk32k_enable(struct arizona *arizona);
int arizona_clk32k_disable(struct arizona *arizona);