ASoC: Implement interrupt driven microphone detection for WM8903

Support use of the WM8903 IRQ for reporting of microphone presence
and short detection.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8903.h b/sound/soc/codecs/wm8903.h
index 8f19a2413785..ce384a2ad820 100644
--- a/sound/soc/codecs/wm8903.h
+++ b/sound/soc/codecs/wm8903.h
@@ -18,6 +18,10 @@
 extern struct snd_soc_dai wm8903_dai;
 extern struct snd_soc_codec_device soc_codec_dev_wm8903;
 
+extern int wm8903_mic_detect(struct snd_soc_codec *codec,
+                             struct snd_soc_jack *jack,
+                             int det, int shrt);
+
 #define WM8903_MCLK_DIV_2 1
 #define WM8903_CLK_SYS    2
 #define WM8903_BCLK       3