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mfd: madera: Add shared data for accessory detection 

Add variables to struct madera that will be shared by the
extcon and audio codec drivers to synchronize output state
during accessory detection. Also add a mutex to protect
the DAPM pointer.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Richard Fitzgerald 2018-11-12 15:28:37 +00:00 committed by Lee Jones
parent 628f3dfe4c
commit 7f9472134a
2 changed files with 10 additions and 0 deletions
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3
drivers/mfd/madera-core.c
View File

@ -15,6 +15,7 @@
#include <linux/gpio.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
@ -357,6 +358,8 @@ int madera_dev_init(struct madera *madera)
dev_set_drvdata(madera->dev, madera);
BLOCKING_INIT_NOTIFIER_HEAD(&madera->notifier);
mutex_init(&madera->dapm_ptr_lock);
madera_set_micbias_info(madera);
/*

7
include/linux/mfd/madera/core.h
View File

@ -15,6 +15,7 @@
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/mfd/madera/pdata.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@ -37,6 +38,8 @@ enum madera_type {
#define MADERA_MAX_MICBIAS 4
#define MADERA_MAX_HP_OUTPUT 3
/* Notifier events */
#define MADERA_NOTIFY_VOICE_TRIGGER 0x1
#define MADERA_NOTIFY_HPDET 0x2
@ -183,6 +186,10 @@ struct madera {
unsigned int num_childbias[MADERA_MAX_MICBIAS];
struct snd_soc_dapm_context *dapm;
struct mutex dapm_ptr_lock;
unsigned int hp_ena;
bool out_clamp[MADERA_MAX_HP_OUTPUT];
bool out_shorted[MADERA_MAX_HP_OUTPUT];
struct blocking_notifier_head notifier;
};