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ASoC: Allow GPIO jack detection to be configured as a wake source

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Some systems wish to use jacks as wake sources. Provide a wake flag in the
GPIO configuration which causes the driver to enable the IRQ as a wake
source.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mark Brown 2011-02-17 16:35:55 -08:00
parent 5a9f91ca79
commit 7887ab3a27
2 changed files with 11 additions and 0 deletions
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3
include/sound/soc.h
View file

@ -436,6 +436,7 @@ struct snd_soc_jack_zone {
* @report: value to report when jack detected
* @invert: report presence in low state
* @debouce_time: debouce time in ms
* @wake: enable as wake source
*/
#ifdef CONFIG_GPIOLIB
struct snd_soc_jack_gpio {
@ -444,6 +445,8 @@ struct snd_soc_jack_gpio {
int report;
int invert;
int debounce_time;
bool wake;
struct snd_soc_jack *jack;
struct delayed_work work;

8
sound/soc/soc-jack.c
View file

@ -330,6 +330,14 @@ int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
if (ret)
goto err;
if (gpios[i].wake) {
ret = set_irq_wake(gpio_to_irq(gpios[i].gpio), 1);
if (ret != 0)
printk(KERN_ERR
"Failed to mark GPIO %d as wake source: %d\n",
gpios[i].gpio, ret);
}
#ifdef CONFIG_GPIO_SYSFS
/* Expose GPIO value over sysfs for diagnostic purposes */
gpio_export(gpios[i].gpio, false);