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ASoC: jack: Add support for GPIO descriptor defined jack pins

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Allow jack GPIO pins be defined also using GPIO descriptor-based interface
in addition to legacy GPIO numbers. This is done by adding two new fields to
struct snd_soc_jack_gpio: idx and gpiod_dev.

Legacy GPIO numbers are used only when GPIO consumer device gpiod_dev is
NULL and otherwise idx is the descriptor index within the GPIO consumer
device.

New function snd_soc_jack_add_gpiods() is added for typical cases where all
GPIO descriptor jack pins belong to same GPIO consumer device. For other
cases the caller must set the gpiod_dev in struct snd_soc_jack_gpio before
calling snd_soc_jack_add_gpios().

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Jarkko Nikula
2014-05-26 14:34:37 +03:00
committed by Mark Brown
parent 50dfb69d1b
commit f025d3b9c6
2 changed files with 71 additions and 16 deletions
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16
include/sound/soc.h
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@@ -453,6 +453,9 @@ int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
#ifdef CONFIG_GPIOLIB
int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
struct snd_soc_jack_gpio *gpios);
int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
struct snd_soc_jack *jack,
int count, struct snd_soc_jack_gpio *gpios);
void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
struct snd_soc_jack_gpio *gpios);
#else
@@ -462,6 +465,13 @@ static inline int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
return 0;
}
int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
struct snd_soc_jack *jack,
int count, struct snd_soc_jack_gpio *gpios)
{
return 0;
}
static inline void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
struct snd_soc_jack_gpio *gpios)
{
@@ -586,7 +596,9 @@ struct snd_soc_jack_zone {
/**
* struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
*
* @gpio: gpio number
* @gpio: legacy gpio number
* @idx: gpio descriptor index within the GPIO consumer device
* @gpiod_dev GPIO consumer device
* @name: gpio name
* @report: value to report when jack detected
* @invert: report presence in low state
@@ -598,6 +610,8 @@ struct snd_soc_jack_zone {
*/
struct snd_soc_jack_gpio {
unsigned int gpio;
unsigned int idx;
struct device *gpiod_dev;
const char *name;
int report;
int invert;