diff options
| author | Lopez Cruz, Misael <x0052729@ti.com> | 2009-03-03 15:25:04 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-03-04 14:47:38 +0000 |
| commit | ec67624d33d5639bcc6ee6918cb1fc0bd1bac3a8 (patch) | |
| tree | 301f1d4ae2f47cca1c7412ce49e7574de8b0dfd2 /include/sound | |
| parent | 5f2a9384a9291d898b4bf85c4fbf497eef582977 (diff) | |
ASoC: Add GPIO support for jack reporting interface
Add GPIO support to jack reporting framework in ASoC using gpiolib calls.
The gpio support exports two new functions: snd_soc_jack_add_gpios and
snd_soc_jack_free_gpios.
Client drivers using gpio feature must pass an array of jack_gpio pins
belonging to a specific jack to the snd_soc_jack_add_gpios function. The
framework will request the gpios, set the data direction and request irq.
The framework will update power status of related jack_pins when an event on
the gpio pins comes according to the reporting bits defined for each gpio.
All gpio resources allocated when adding jack_gpio pins can be released
using snd_soc_jack_free_gpios function.
Signed-off-by: Misael Lopez Cruz <x0052729@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/soc.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index 0e773526416..a40bc6f316f 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -16,6 +16,8 @@ #include <linux/platform_device.h> #include <linux/types.h> #include <linux/workqueue.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/control.h> @@ -168,6 +170,9 @@ struct soc_enum; struct snd_soc_ac97_ops; struct snd_soc_jack; struct snd_soc_jack_pin; +#ifdef CONFIG_GPIOLIB +struct snd_soc_jack_gpio; +#endif typedef int (*hw_write_t)(void *,const char* ,int); typedef int (*hw_read_t)(void *,char* ,int); @@ -194,6 +199,12 @@ int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type, void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask); int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, struct snd_soc_jack_pin *pins); +#ifdef CONFIG_GPIOLIB +int snd_soc_jack_add_gpios(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); +#endif /* codec IO */ #define snd_soc_read(codec, reg) codec->read(codec, reg) @@ -264,6 +275,27 @@ struct snd_soc_jack_pin { bool invert; }; +/** + * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection + * + * @gpio: gpio number + * @name: gpio name + * @report: value to report when jack detected + * @invert: report presence in low state + * @debouce_time: debouce time in ms + */ +#ifdef CONFIG_GPIOLIB +struct snd_soc_jack_gpio { + unsigned int gpio; + const char *name; + int report; + int invert; + int debounce_time; + struct snd_soc_jack *jack; + struct work_struct work; +}; +#endif + struct snd_soc_jack { struct snd_jack *jack; struct snd_soc_card *card; |