ASoC: TWL4030: Add support Voice DAI

Add Voice DAI to support the PCM voice interface of the twl4030 codec.

The PCM voice interface can be used with 8-kHz(voice narrowband) or
16-kHz(voice wideband) sampling rates, and 16bits, and mono RX and mono
TX or stereo TX.

The PCM voice interface has two modes
 - PCM mode1 : This uses the normal FS polarity and the rising edge of
               the clock signal.
 - PCM mode2 : This uses the FS polarity inverted and the falling edge
               of the clock signal.

If the system master clock is not 26MHz or the twl4030 codec mode is not
option2, the voice PCM interface is not available.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/sound/soc/codecs/twl4030.h b/sound/soc/codecs/twl4030.h
index cb63765db1d..981ec609495 100644
--- a/sound/soc/codecs/twl4030.h
+++ b/sound/soc/codecs/twl4030.h
@@ -113,6 +113,8 @@
 #define TWL4030_SEL_16K                 0x04
 #define TWL4030_CODECPDZ                0x02
 #define TWL4030_OPT_MODE                0x01
+#define TWL4030_OPTION_1                (1 << 0)
+#define TWL4030_OPTION_2                (0 << 0)
 
 /* TWL4030_REG_MICBIAS_CTL (0x04) Fields */
 
@@ -171,6 +173,17 @@
 #define TWL4030_CLK256FS_EN             0x02
 #define TWL4030_AIF_EN                  0x01
 
+/* VOICE_IF (0x0F) Fields */
+
+#define TWL4030_VIF_SLAVE_EN            0x80
+#define TWL4030_VIF_DIN_EN              0x40
+#define TWL4030_VIF_DOUT_EN             0x20
+#define TWL4030_VIF_SWAP                0x10
+#define TWL4030_VIF_FORMAT              0x08
+#define TWL4030_VIF_TRI_EN              0x04
+#define TWL4030_VIF_SUB_EN              0x02
+#define TWL4030_VIF_EN                  0x01
+
 /* EAR_CTL (0x21) */
 #define TWL4030_EAR_GAIN                0x30
 
@@ -236,7 +249,10 @@
 #define TWL4030_SMOOTH_ANAVOL_EN        0x02
 #define TWL4030_DIGMIC_LR_SWAP_EN       0x01
 
-extern struct snd_soc_dai twl4030_dai;
+#define TWL4030_DAI_HIFI                0
+#define TWL4030_DAI_VOICE               1
+
+extern struct snd_soc_dai twl4030_dai[2];
 extern struct snd_soc_codec_device soc_codec_dev_twl4030;
 
 #endif  /* End of __TWL4030_AUDIO_H__ */