ASoC: Add jack_status_check callback function for GPIO jacks

The jack_status_check callback function is the interface to check the
status of the jack. Some target provides the method to distinguish what
is the jack inserted - headphone jack, microphone jack, tvout jack, etc,
so we can implement it using the jack_status_check function.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 310a21949a3e..13b117aac5d9 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -332,6 +332,8 @@ struct snd_soc_jack_gpio {
         int debounce_time;
         struct snd_soc_jack *jack;
         struct work_struct work;
+
+        int (*jack_status_check)(void);
 };
 #endif
 
diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
index 12124149601e..3c07a94c2e30 100644
--- a/sound/soc/soc-jack.c
+++ b/sound/soc/soc-jack.c
@@ -163,6 +163,9 @@ static void snd_soc_jack_gpio_detect(struct snd_soc_jack_gpio *gpio)
         else
                 report = 0;
 
+        if (gpio->jack_status_check)
+                report = gpio->jack_status_check();
+
         snd_soc_jack_report(jack, report, gpio->report);
 }