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authorLopez Cruz, Misael <x0052729@ti.com>2009-03-03 15:25:04 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-03-04 14:47:38 +0000
commitec67624d33d5639bcc6ee6918cb1fc0bd1bac3a8 (patch)
tree301f1d4ae2f47cca1c7412ce49e7574de8b0dfd2 /include/sound
parent5f2a9384a9291d898b4bf85c4fbf497eef582977 (diff)
downloadop-kernel-dev-ec67624d33d5639bcc6ee6918cb1fc0bd1bac3a8.zip
op-kernel-dev-ec67624d33d5639bcc6ee6918cb1fc0bd1bac3a8.tar.gz
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.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 0e77352..a40bc6f 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;
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