ASoC: arizona: Add a notifier chain for CODEC events

[sfrench/cifs-2.6.git] / include / linux / mfd / arizona / core.h

diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h
index d55a42297d4914a6da0c86266810c9b873af9c15..58ab4c0fe761393cd614e4fa81d52a5d0fa4627f 100644 (file)
--- a/include/linux/mfd/arizona/core.h
+++ b/include/linux/mfd/arizona/core.h
@@ -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);