ASoC: sirf: Add SiRF internal audio codec driver

SiRF internal audio codec is integrated in SiRF atlas6 and prima2 SoC.
Features include:
1. Stereo DAC and ADC with 16-bit resolution amd 48KHz sample rate
2. Support headphone and/or speaker output
3. Integrate headphone and speaker output amp
4. Support LINE and MIC input
5. Support single ended and differential input mode

Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
--v5:
1. Drop all inlines.
2. Reordering the Kconfig and Makefile
3. Remove the sirf_audio_codec_reg_bits struct, use the new controls instead it.
4. Add some SND_SOC_DAPM_OUT_DRV instead of HP and SPK enable driver
5. Add audio codec clock supply instead of adc event callback
6. Fixed playback and capture can't concurrent work bug.

--
 .../devicetree/bindings/sound/sirf-audio-codec.txt |   17 +
 sound/soc/codecs/Kconfig                           |    5 +
 sound/soc/codecs/Makefile                          |    1 +
 sound/soc/codecs/sirf-audio-codec.c                |  533 ++++++++++++++++++++
 sound/soc/codecs/sirf-audio-codec.h                |   75 +++
 5 files changed, 631 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/sirf-audio-codec.txt
 create mode 100644 sound/soc/codecs/sirf-audio-codec.c
 create mode 100644 sound/soc/codecs/sirf-audio-codec.h
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/sirf-audio-codec.txt b/Documentation/devicetree/bindings/sound/sirf-audio-codec.txt
new file mode 100644
index 000000000000..062f5ec36f9b
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/sirf-audio-codec.txt
@@ -0,0 +1,17 @@
+SiRF internal audio CODEC
+
+Required properties:
+
+  - compatible : "sirf,atlas6-audio-codec" or "sirf,prima2-audio-codec"
+
+  - reg : the register address of the device.
+
+  - clocks: the clock of SiRF internal audio codec
+
+Example:
+
+audiocodec: audiocodec@b0040000 {
+	compatible = "sirf,atlas6-audio-codec";
+	reg = <0xb0040000 0x10000>;
+	clocks = <&clks 27>;
+};