ASoC: ac97: add gpio chip

The AC97 specification provides a guide for 16 GPIOs in the codecs. If
the gpiolib is compiled in the kernel, declare a gpio chip.

This was tested with a pxa27x board (mioa701) and a wm9713 codec.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 74bc85473b58..15aa5f07c955 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -417,11 +417,13 @@
 #define AC97_RATES_MIC_ADC      4
 #define AC97_RATES_SPDIF        5
 
+#define AC97_NUM_GPIOS          16
 /*
  *
  */
 
 struct snd_ac97;
+struct snd_ac97_gpio_priv;
 struct snd_pcm_chmap;
 
 struct snd_ac97_build_ops {
@@ -529,6 +531,7 @@ struct snd_ac97 {
         struct delayed_work power_work;
 #endif
         struct device dev;
+        struct snd_ac97_gpio_priv *gpio_priv;
 
         struct snd_pcm_chmap *chmaps[2]; /* channel-maps (optional) */
 };