ALSA: ASoC: Add WM8903 CODEC driver

The WM8903 is a high performance ultra-low power stereo CODEC optimised
for portable audio applications.  Features include:

    * 5mW power consumption for DAC to headphone playback
    * Stereo DAC SNR 96dB typical, THD -86dB typical
    * Stereo ADC SNR 93dB typical, THD -80dB typical
    * Up to 3 single ended inputs per stereo channel
    * Up to 2 pseudo differential inputs per stereo channel
    * Up to 1 fully differential mic input per stereo channel
    * Digital Dynamic Range Controller (compressor/limiter)
    * Digital sidetone mixing

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index eb79c5cab47a..5d77dc3e6bf3 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -10,6 +10,7 @@ config SND_SOC_ALL_CODECS
         select SND_SOC_WM8750
         select SND_SOC_WM8753
         select SND_SOC_WM8900
+        select SND_SOC_WM8903
         select SND_SOC_WM8990
         select SND_SOC_CS4270
         select SND_SOC_TLV320AIC26
@@ -54,6 +55,9 @@ config SND_SOC_WM8753
 config SND_SOC_WM8900
         tristate
 
+config SND_SOC_WM8903
+        tristate
+
 config SND_SOC_WM8990
         tristate