[alsa-devel] [PATCH] ASoC: add Wolfson WM8973 codec driver
Xavier Hsu
xavier.hsu at linaro.org
Fri Jun 27 09:09:15 CEST 2014
This patch adds support for the wm8973 codec, based on the
existing wm8971 codec driver.
Any comments about improving the patch are welcome.
Thanks.
Signed-off-by: Xavier Hsu <xavier.hsu at linaro.org>
---
Documentation/devicetree/bindings/sound/wm8973.txt | 26 +
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/wm8973.c | 1028 ++++++++++++++++++++
sound/soc/codecs/wm8973.h | 57 ++
5 files changed, 1117 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/wm8973.txt
create mode 100644 sound/soc/codecs/wm8973.c
create mode 100644 sound/soc/codecs/wm8973.h
diff --git a/Documentation/devicetree/bindings/sound/wm8973.txt b/Documentation/devicetree/bindings/sound/wm8973.txt
new file mode 100644
index 0000000..2374873
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/wm8973.txt
@@ -0,0 +1,26 @@
+WM8973 audio CODEC
+
+These devices support both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+
+ - compatible : "wlf,wm8973".
+
+ - reg : the I2C address of the device for I2C, the chip select
+ number for SPI.
+
+Optional properties:
+
+ - mclk-div : Setting the CLKDIV2 bit for dividing MCLK.
+ mclk-div = <0> (Default & not divide).
+ mclk-div = <1> (Divide by 2).
+
+Example:
+
+codec: wm8973 at 1a {
+ compatible = "wlf,wm8973";
+ reg = <0x1a>;
+
+ mclk-div = <1>;
+};
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 350878e..acf83bd 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -139,6 +139,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_WM8961 if I2C
select SND_SOC_WM8962 if I2C && INPUT
select SND_SOC_WM8971 if I2C
+ select SND_SOC_WM8973 if I2C
select SND_SOC_WM8974 if I2C
select SND_SOC_WM8978 if I2C
select SND_SOC_WM8983 if SND_SOC_I2C_AND_SPI
@@ -692,6 +693,9 @@ config SND_SOC_WM8962
config SND_SOC_WM8971
tristate
+config SND_SOC_WM8973
+ tristate
+
config SND_SOC_WM8974
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 1bd6e1c..aad29a3 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -141,6 +141,7 @@ snd-soc-wm8960-objs := wm8960.o
snd-soc-wm8961-objs := wm8961.o
snd-soc-wm8962-objs := wm8962.o
snd-soc-wm8971-objs := wm8971.o
+snd-soc-wm8973-objs := wm8973.o
snd-soc-wm8974-objs := wm8974.o
snd-soc-wm8978-objs := wm8978.o
snd-soc-wm8983-objs := wm8983.o
@@ -303,6 +304,7 @@ obj-$(CONFIG_SND_SOC_WM8960) += snd-soc-wm8960.o
obj-$(CONFIG_SND_SOC_WM8961) += snd-soc-wm8961.o
obj-$(CONFIG_SND_SOC_WM8962) += snd-soc-wm8962.o
obj-$(CONFIG_SND_SOC_WM8971) += snd-soc-wm8971.o
+obj-$(CONFIG_SND_SOC_WM8973) += snd-soc-wm8973.o
obj-$(CONFIG_SND_SOC_WM8974) += snd-soc-wm8974.o
obj-$(CONFIG_SND_SOC_WM8978) += snd-soc-wm8978.o
obj-$(CONFIG_SND_SOC_WM8983) += snd-soc-wm8983.o
diff --git a/sound/soc/codecs/wm8973.c b/sound/soc/codecs/wm8973.c
new file mode 100644
index 0000000..fc03de3
--- /dev/null
+++ b/sound/soc/codecs/wm8973.c
@@ -0,0 +1,1028 @@
+/*
+ * wm8973.c -- WM8973 ALSA SoC Audio driver
+ *
+ * Copyright (C) 2013 -2014 Fujitsu Semiconductor, Ltd
+ * Copyright (C) 2014 Linaro, Ltd Xavier Hsu <xavier.hsu at linaro.org>
+ *
+ * Based on wm8971 driver Copyright 2005 Lab126, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "wm8973.h"
+
+static int mclk_div;
+
+struct wm8973_priv {
+ struct regmap *regmap;
+ unsigned int sysclk;
+ struct snd_pcm_hw_constraint_list *sysclk_constraints;
+ int playback_fs;
+ bool deemph;
+};
+
+/*
+ * wm8973 register cache
+ * We can't read the WM8973 register space when we
+ * are using 2 wire for device control, so we cache them instead.
+ */
+static const struct reg_default wm8973_reg_defaults[] = {
+ { 0, 0x0097 },
+ { 1, 0x0097 },
+ { 2, 0x0079 },
+ { 3, 0x0079 },
+ { 4, 0x0000 },
+ { 5, 0x0008 },
+ { 6, 0x0000 },
+ { 7, 0x000a },
+ { 8, 0x0000 },
+ { 9, 0x0000 },
+ { 10, 0x00ff },
+ { 11, 0x00ff },
+ { 12, 0x000f },
+ { 13, 0x000f },
+ { 14, 0x0000 },
+ { 15, 0x0000 },
+ { 16, 0x0000 },
+ { 17, 0x007b },
+ { 18, 0x0000 },
+ { 19, 0x0032 },
+ { 20, 0x0000 },
+ { 21, 0x01c3 },
+ { 22, 0x01c3 },
+ { 23, 0x0040 },
+ { 24, 0x0014 },
+ { 25, 0x01c2 },
+ { 26, 0x0060 },
+ { 27, 0x0000 },
+ { 28, 0x0000 },
+ { 29, 0x0000 },
+ { 30, 0x0000 },
+ { 31, 0x0000 },
+ { 32, 0x0000 },
+ { 33, 0x0000 },
+ { 34, 0x0050 },
+ { 35, 0x0050 },
+ { 36, 0x0050 },
+ { 37, 0x0050 },
+ { 38, 0x0050 },
+ { 39, 0x0050 },
+ { 40, 0x0079 },
+ { 41, 0x0079 },
+ { 42, 0x0079 },
+};
+
+static const char const *wm8973_bass[] = {"Linear Control", "Adaptive Boost"};
+static const char const *wm8973_bass_filter[] = { "130Hz @ 48kHz",
+ "200Hz @ 48kHz" };
+static const char const *wm8973_treble[] = {"8kHz", "4kHz"};
+static const char const *wm8973_3d_lc[] = {"200Hz", "500Hz"};
+static const char const *wm8973_3d_uc[] = {"2.2kHz", "1.5kHz"};
+static const char const *wm8973_3d_func[] = {"Capture", "Playback"};
+static const char const *wm8973_alc_func[] = {"Off", "Right", "Left",
+ "Stereo"};
+static const char const *wm8973_ng_type[] = {"Constant PGA Gain",
+ "Mute ADC Output"};
+static const char const *wm8973_line_mux[] = {"Line 1", "Line 2", "Line 3",
+ "PGA", "Differential"};
+static const char const *wm8973_pga_sel[] = {"Line 1", "Line 2", "Line 3",
+ "Differential"};
+static const char const *wm8973_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
+ "ROUT1"};
+static const char const *wm8973_diff_sel[] = {"Line 1", "Line 2"};
+static const char const *wm8973_adcpol[] = {"Normal", "L Invert", "R Invert",
+ "L + R Invert"};
+static const char const *wm8973_mono_mux[] = {"Stereo", "Mono (Left)",
+ "Mono (Right)", "Digital Mono"};
+
+static const SOC_ENUM_SINGLE_DECL(bass_boost, WM8973_BASS, 7, wm8973_bass);
+static const SOC_ENUM_SINGLE_DECL(bass_filter, WM8973_BASS,
+ 6, wm8973_bass_filter);
+static const SOC_ENUM_SINGLE_DECL(treble_cutoff, WM8973_TREBLE,
+ 6, wm8973_treble);
+static const SOC_ENUM_SINGLE_DECL(lower_cutoff, WM8973_3D, 5, wm8973_3d_lc);
+static const SOC_ENUM_SINGLE_DECL(upper_cutoff, WM8973_3D, 6, wm8973_3d_uc);
+static const SOC_ENUM_SINGLE_DECL(mode, WM8973_3D, 7, wm8973_3d_func);
+static const SOC_ENUM_SINGLE_DECL(alc_capture_func, WM8973_ALC1,
+ 7, wm8973_alc_func);
+static const SOC_ENUM_SINGLE_DECL(alc_capture_ngtype, WM8973_NGATE,
+ 1, wm8973_ng_type);
+static const SOC_ENUM_SINGLE_DECL(left_line, WM8973_LOUTM1,
+ 0, wm8973_line_mux);
+static const SOC_ENUM_SINGLE_DECL(right_line, WM8973_ROUTM1,
+ 0, wm8973_line_mux);
+static const SOC_ENUM_SINGLE_DECL(left_pga, WM8973_LADCIN, 6, wm8973_pga_sel);
+static const SOC_ENUM_SINGLE_DECL(right_pga, WM8973_RADCIN, 6, wm8973_pga_sel);
+static const SOC_ENUM_SINGLE_DECL(out3, WM8973_ADCTL2, 7, wm8973_out3);
+static const SOC_ENUM_SINGLE_DECL(diffmux, WM8973_ADCIN, 8, wm8973_diff_sel);
+static const SOC_ENUM_SINGLE_DECL(capture_polarity, WM8973_ADCDAC,
+ 5, wm8973_adcpol);
+static const SOC_ENUM_SINGLE_DECL(monomux, WM8973_ADCIN, 6, wm8973_mono_mux);
+
+static int wm8973_deemph[] = { 0, 32000, 44100, 48000 };
+
+static int wm8973_set_deemph(struct snd_soc_codec *codec)
+{
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+ int val = 0, i, best = 0;
+
+ /* If we're using deemphasis select the nearest available sample
+ * rate.
+ */
+ if (wm8973->deemph) {
+ best = 1;
+ for (i = 2; i < ARRAY_SIZE(wm8973_deemph); i++) {
+ if (abs(wm8973_deemph[i] - wm8973->playback_fs) <
+ abs(wm8973_deemph[best] - wm8973->playback_fs))
+ best = i;
+ }
+ val = best << 1;
+ }
+
+ dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n",
+ best, wm8973_deemph[best]);
+
+ return snd_soc_update_bits(codec, WM8973_ADCDAC, 0x6, val);
+}
+
+static int wm8973_get_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+
+ ucontrol->value.enumerated.item[0] = wm8973->deemph;
+
+ return 0;
+}
+
+static int wm8973_put_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+ int deemph = ucontrol->value.enumerated.item[0];
+ int ret = 0;
+
+ if (deemph > 1)
+ return -EINVAL;
+
+ mutex_lock(&codec->mutex);
+ if (wm8973->deemph != deemph) {
+ wm8973->deemph = deemph;
+ wm8973_set_deemph(codec);
+
+ ret = 1;
+ }
+ mutex_unlock(&codec->mutex);
+
+ return ret;
+}
+
+static const DECLARE_TLV_DB_SCALE(in_vol, -1725, 75, 0);
+static const DECLARE_TLV_DB_SCALE(out_vol, -6700, 91, 0);
+static const DECLARE_TLV_DB_SCALE(attenuate_6db, -600, 600, 0);
+static const DECLARE_TLV_DB_SCALE(dac_vol, -12700, 50, 0);
+static const DECLARE_TLV_DB_SCALE(tone_vol, -600, 150, 0);
+static const DECLARE_TLV_DB_SCALE(alc_tar_vol, -2850, 150, 0);
+static const DECLARE_TLV_DB_SCALE(alc_max_vol, -1200, 600, 0);
+static const DECLARE_TLV_DB_SCALE(adc_vol, -9700, 50, 0);
+static const DECLARE_TLV_DB_SCALE(bypass_out_vol, -1500, 300, 0);
+
+static const struct snd_kcontrol_new wm8973_snd_controls[] = {
+ /* Left & Right Input volume */
+ SOC_DOUBLE_R_TLV("Capture Volume", WM8973_LINVOL, WM8973_RINVOL,
+ 0, 63, 0, in_vol),
+ SOC_DOUBLE_R("Capture ZC Switch", WM8973_LINVOL, WM8973_RINVOL,
+ 6, 1, 0),
+ SOC_DOUBLE_R("Capture Switch", WM8973_LINVOL, WM8973_RINVOL, 7, 1, 1),
+
+ /* LOUT1 & ROUT1 volume */
+ SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8973_LOUT1V,
+ WM8973_ROUT1V, 0, 127, 0, out_vol),
+ SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8973_LOUT1V,
+ WM8973_ROUT1V, 7, 1, 0),
+
+ /* ADC & DAC control */
+ SOC_SINGLE("Capture Filter Switch", WM8973_ADCDAC, 0, 1, 1),
+ SOC_SINGLE_BOOL_EXT("Playback De-emphasis Switch", 0,
+ wm8973_get_deemph, wm8973_put_deemph),
+ SOC_ENUM("Capture Polarity", capture_polarity),
+ SOC_SINGLE_TLV("Playback 6dB Attenuate", WM8973_ADCDAC,
+ 7, 1, 0, attenuate_6db),
+ SOC_SINGLE_TLV("Capture 6dB Attenuate", WM8973_ADCDAC,
+ 8, 1, 0, attenuate_6db),
+ /* ADCDAC Bit 4 - HPOR */
+
+ /* Left & Right Channel Digital Volume */
+ SOC_DOUBLE_R_TLV("DAC Volume", WM8973_LDAC, WM8973_RDAC,
+ 0, 255, 0, dac_vol),
+
+ /* Bass Control */
+ SOC_SINGLE_TLV("Bass Volume", WM8973_BASS, 0, 15, 1, tone_vol),
+ SOC_ENUM("Bass Boost", bass_boost),
+ SOC_ENUM("Bass Filter", bass_filter),
+
+ /* Treble Control */
+ SOC_SINGLE_TLV("Treble Volume", WM8973_TREBLE, 0, 15, 0, tone_vol),
+ SOC_ENUM("Treble Cut-off", treble_cutoff),
+
+ /* 3D Control */
+ SOC_SINGLE("3D Switch", WM8973_3D, 0, 1, 0),
+ SOC_SINGLE("3D Volume", WM8973_3D, 1, 15, 0),
+ SOC_ENUM("3D Lower Cut-off", lower_cutoff),
+ SOC_ENUM("3D Upper Cut-off", upper_cutoff),
+ SOC_ENUM("3D Mode", mode),
+
+ /* ALC1 & ALC2 & ALC3 Control */
+ SOC_SINGLE_TLV("ALC Capture Target Volume", WM8973_ALC1,
+ 0, 15, 0, alc_tar_vol),
+ SOC_SINGLE_TLV("ALC Capture Max Volume", WM8973_ALC1,
+ 4, 7, 0, alc_max_vol),
+ SOC_ENUM("ALC Capture Function", alc_capture_func),
+
+ SOC_SINGLE("ALC Capture Hold Time", WM8973_ALC2, 0, 15, 0),
+ SOC_SINGLE("ALC Capture ZC Switch", WM8973_ALC2, 7, 1, 0),
+
+ SOC_SINGLE("ALC Capture Attack Time", WM8973_ALC3, 0, 15, 0),
+ SOC_SINGLE("ALC Capture Decay Time", WM8973_ALC3, 4, 15, 0),
+
+ /* Noise Gate Control */
+ SOC_SINGLE("ALC Capture NG Switch", WM8973_NGATE, 0, 1, 0),
+ SOC_ENUM("ALC Capture NG Type", alc_capture_ngtype),
+ SOC_SINGLE("ALC Capture NG Threshold", WM8973_NGATE, 3, 31, 0),
+
+ /* Left & Right ADC Digital Volume*/
+ SOC_DOUBLE_R_TLV("ADC Volume", WM8973_LADC, WM8973_RADC,
+ 0, 255, 0, adc_vol),
+
+ /* Additional Control 1 */
+ SOC_SINGLE("ZC Timeout Switch", WM8973_ADCTL1, 0, 1, 0),
+ SOC_SINGLE("Playback Invert Switch", WM8973_ADCTL1, 1, 1, 0),
+ SOC_SINGLE("Analogue Bias", WM8973_ADCTL1, 6, 3, 0),
+ /* ADCTL1 Bit 2,3 - DATSEL */
+ /* ADCTL1 Bit 6,7 - VSEL */
+
+ /* Additional Control 2 */
+ SOC_SINGLE("Right Speaker Playback Invert Switch", WM8973_ADCTL2,
+ 4, 1, 0),
+ /* ADCTL2 Bit 2 - LRCM */
+ SOC_SINGLE("LRCLK Switch", WM8973_ADCTL2, 2, 1, 0),
+ /* ADCTL2 Bit 3 - TRI */
+ SOC_SINGLE("Headphone Switch POL", WM8973_ADCTL2, 5, 1, 0),
+ SOC_SINGLE("Headphone Switch EN", WM8973_ADCTL2, 6, 1, 0),
+
+ /* Additional Control 3 */
+ /* ADCTL3 Bit 5 - HPFLREN */
+ /* ADCTL3 Bit 6 - VROI */
+ /* ADCTL3 Bit 7,8 - ADCLRM */
+
+ /* ADC input Mode */
+ /* ADCIN Bit 4 - LDCM */
+ /* ADCIN Bit 5 - RDCM */
+ /* ADCIN Bit 6,7 - MONOMIX */
+
+ /* Left & Right ADC Signal Path Control*/
+ SOC_DOUBLE_R("Mic Boost", WM8973_LADCIN, WM8973_RADCIN, 4, 3, 0),
+
+ /* Left OUT Mixer Control */
+ SOC_DOUBLE_R_TLV("Bypass Left Playback Volume", WM8973_LOUTM1,
+ WM8973_LOUTM2, 4, 7, 1, bypass_out_vol),
+
+ /* Right OUT Mixer Control */
+ SOC_DOUBLE_R_TLV("Bypass Right Playback Volume", WM8973_ROUTM1,
+ WM8973_ROUTM2, 4, 7, 1, bypass_out_vol),
+
+ /* Mono OUT Mixer Control */
+ SOC_DOUBLE_R_TLV("Bypass Mono Playback Volume", WM8973_MOUTM1,
+ WM8973_MOUTM2, 4, 7, 1, bypass_out_vol),
+
+ /* LOUT2 & ROUT2 volume */
+ SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8973_LOUT2V,
+ WM8973_ROUT2V, 0, 127, 0, out_vol),
+ SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8973_LOUT2V,
+ WM8973_ROUT2V, 7, 1, 0),
+
+ /* MONOOUT volume */
+ SOC_SINGLE_TLV("Mono Playback Volume", WM8973_MOUTV,
+ 0, 127, 0, out_vol),
+ SOC_SINGLE("Mono Playback ZC Switch", WM8973_MOUTV, 7, 1, 0),
+
+ SOC_SINGLE("Right Out 2", WM8973_PWR2, 3, 1, 0),
+ SOC_SINGLE("Left Out 2", WM8973_PWR2, 4, 1, 0),
+};
+
+/*
+ * DAPM Controls
+ */
+
+/* Left Mixer */
+static const struct snd_kcontrol_new wm8973_left_mixer_controls[] = {
+SOC_DAPM_SINGLE("Playback Switch", WM8973_LOUTM1, 8, 1, 0),
+SOC_DAPM_SINGLE("Left Bypass Switch", WM8973_LOUTM1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Playback Switch", WM8973_LOUTM2, 8, 1, 0),
+SOC_DAPM_SINGLE("Right Bypass Switch", WM8973_LOUTM2, 7, 1, 0),
+};
+
+/* Right Mixer */
+static const struct snd_kcontrol_new wm8973_right_mixer_controls[] = {
+SOC_DAPM_SINGLE("Left Playback Switch", WM8973_ROUTM1, 8, 1, 0),
+SOC_DAPM_SINGLE("Left Bypass Switch", WM8973_ROUTM1, 7, 1, 0),
+SOC_DAPM_SINGLE("Playback Switch", WM8973_ROUTM2, 8, 1, 0),
+SOC_DAPM_SINGLE("Right Bypass Switch", WM8973_ROUTM2, 7, 1, 0),
+};
+
+/* Mono Mixer */
+static const struct snd_kcontrol_new wm8973_mono_mixer_controls[] = {
+SOC_DAPM_SINGLE("Left Playback Switch", WM8973_MOUTM1, 8, 1, 0),
+SOC_DAPM_SINGLE("Left Bypass Switch", WM8973_MOUTM1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Playback Switch", WM8973_MOUTM2, 8, 1, 0),
+SOC_DAPM_SINGLE("Right Bypass Switch", WM8973_MOUTM2, 7, 1, 0),
+};
+
+/* Left Line Mux */
+static const struct snd_kcontrol_new wm8973_left_line_controls =
+SOC_DAPM_ENUM("Route", left_line);
+
+/* Right Line Mux */
+static const struct snd_kcontrol_new wm8973_right_line_controls =
+SOC_DAPM_ENUM("Route", right_line);
+
+/* Left PGA Mux */
+static const struct snd_kcontrol_new wm8973_left_pga_controls =
+SOC_DAPM_ENUM("Route", left_pga);
+
+/* Right PGA Mux */
+static const struct snd_kcontrol_new wm8973_right_pga_controls =
+SOC_DAPM_ENUM("Route", right_pga);
+
+/* Out 3 Mux */
+static const struct snd_kcontrol_new wm8973_out3_controls =
+SOC_DAPM_ENUM("Route", out3);
+
+/* Differential Mux */
+static const struct snd_kcontrol_new wm8973_diffmux_controls =
+SOC_DAPM_ENUM("Route", diffmux);
+
+/* Mono ADC Mux */
+static const struct snd_kcontrol_new wm8973_monomux_controls =
+SOC_DAPM_ENUM("Route", monomux);
+
+static const struct snd_soc_dapm_widget wm8973_dapm_widgets[] = {
+ SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
+ &wm8973_left_mixer_controls[0],
+ ARRAY_SIZE(wm8973_left_mixer_controls)),
+
+ SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
+ &wm8973_right_mixer_controls[0],
+ ARRAY_SIZE(wm8973_right_mixer_controls)),
+
+ SND_SOC_DAPM_MIXER("Mono Mixer", WM8973_PWR2, 2, 0,
+ &wm8973_mono_mixer_controls[0],
+ ARRAY_SIZE(wm8973_mono_mixer_controls)),
+
+ SND_SOC_DAPM_PGA("Right Out 2", WM8973_PWR2, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 2", WM8973_PWR2, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Right Out 1", WM8973_PWR2, 5, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 1", WM8973_PWR2, 6, 0, NULL, 0),
+ SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8973_PWR2, 7, 0),
+ SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8973_PWR2, 8, 0),
+
+ SND_SOC_DAPM_MICBIAS("Mic Bias", WM8973_PWR1, 1, 0),
+ SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8973_PWR1, 2, 0),
+ SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8973_PWR1, 3, 0),
+ SND_SOC_DAPM_MUX("Right PGA Mux", WM8973_PWR1, 4, 0,
+ &wm8973_right_pga_controls),
+ SND_SOC_DAPM_MUX("Left PGA Mux", WM8973_PWR1, 5, 0,
+ &wm8973_left_pga_controls),
+
+ SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
+ &wm8973_left_line_controls),
+ SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
+ &wm8973_right_line_controls),
+
+ SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0,
+ &wm8973_out3_controls),
+ SND_SOC_DAPM_PGA("Out 3", WM8973_PWR2, 1, 0, NULL, 0),
+
+ SND_SOC_DAPM_PGA("Mono Out 1", WM8973_PWR2, 2, 0, NULL, 0),
+
+ SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
+ &wm8973_diffmux_controls),
+
+ SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
+ &wm8973_monomux_controls),
+ SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
+ &wm8973_monomux_controls),
+
+ SND_SOC_DAPM_OUTPUT("LOUT1"),
+ SND_SOC_DAPM_OUTPUT("ROUT1"),
+ SND_SOC_DAPM_OUTPUT("LOUT2"),
+ SND_SOC_DAPM_OUTPUT("ROUT2"),
+ SND_SOC_DAPM_OUTPUT("MONO1"),
+ SND_SOC_DAPM_OUTPUT("OUT3"),
+ SND_SOC_DAPM_OUTPUT("VREF"),
+
+ SND_SOC_DAPM_INPUT("LINPUT1"),
+ SND_SOC_DAPM_INPUT("LINPUT2"),
+ SND_SOC_DAPM_INPUT("LINPUT3"),
+ SND_SOC_DAPM_INPUT("RINPUT1"),
+ SND_SOC_DAPM_INPUT("RINPUT2"),
+ SND_SOC_DAPM_INPUT("RINPUT3"),
+};
+
+static const struct snd_soc_dapm_route wm8973_dapm_routes[] = {
+ {"Left Mixer", "Playback Switch", "Left DAC"},
+ {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
+ {"Left Mixer", "Right Playback Switch", "Right DAC"},
+ {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
+
+ {"Right Mixer", "Left Playback Switch", "Left DAC"},
+ {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
+ {"Right Mixer", "Playback Switch", "Right DAC"},
+ {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
+
+ {"Left Out 1", NULL, "Left Mixer"},
+ {"LOUT1", NULL, "Left Out 1"},
+
+ {"Left Out 2", NULL, "Left Mixer"},
+ {"LOUT2", NULL, "Left Out 2"},
+
+ {"Right Out 1", NULL, "Right Mixer"},
+ {"ROUT1", NULL, "Right Out 1"},
+
+ {"Right Out 2", NULL, "Right Mixer"},
+ {"ROUT2", NULL, "Right Out 2"},
+
+ {"Mono Mixer", "Left Playback Switch", "Left DAC"},
+ {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
+ {"Mono Mixer", "Right Playback Switch", "Right DAC"},
+ {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
+
+ {"Mono Out 1", NULL, "Mono Mixer"},
+ {"MONO1", NULL, "Mono Out 1"},
+
+ {"Out3 Mux", "VREF", "VREF"},
+ {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
+ {"Out3 Mux", "ROUT1", "Right Mixer"},
+ {"Out3 Mux", "MonoOut", "MONO1"},
+ {"Out 3", NULL, "Out3 Mux"},
+ {"OUT3", NULL, "Out 3"},
+
+ {"Left Line Mux", "Line 1", "LINPUT1"},
+ {"Left Line Mux", "Line 2", "LINPUT2"},
+ {"Left Line Mux", "Line 3", "LINPUT3"},
+ {"Left Line Mux", "PGA", "Left PGA Mux"},
+ {"Left Line Mux", "Differential", "Differential Mux"},
+
+ {"Right Line Mux", "Line 1", "RINPUT1"},
+ {"Right Line Mux", "Line 2", "RINPUT2"},
+ {"Right Line Mux", "Line 3", "RINPUT3"},
+ /* {"Right Line Mux", "Mic", "MIC"}, */
+ {"Right Line Mux", "PGA", "Right PGA Mux"},
+ {"Right Line Mux", "Differential", "Differential Mux"},
+
+ {"Left PGA Mux", "Line 1", "LINPUT1"},
+ {"Left PGA Mux", "Line 2", "LINPUT2"},
+ {"Left PGA Mux", "Line 3", "LINPUT3"},
+ {"Left PGA Mux", "Differential", "Differential Mux"},
+
+ {"Right PGA Mux", "Line 1", "RINPUT1"},
+ {"Right PGA Mux", "Line 2", "RINPUT2"},
+ {"Right PGA Mux", "Line 3", "RINPUT3"},
+ {"Right PGA Mux", "Differential", "Differential Mux"},
+
+ {"Differential Mux", "Line 1", "LINPUT1"},
+ {"Differential Mux", "Line 1", "RINPUT1"},
+ {"Differential Mux", "Line 2", "LINPUT2"},
+ {"Differential Mux", "Line 2", "RINPUT2"},
+
+ {"Left ADC Mux", "Stereo", "Left PGA Mux"},
+ {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
+ {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
+
+ {"Right ADC Mux", "Stereo", "Right PGA Mux"},
+ {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
+ {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
+
+ {"Left ADC", NULL, "Left ADC Mux"},
+ {"Right ADC", NULL, "Right ADC Mux"},
+};
+
+struct _coeff_div {
+ u32 mclk;
+ u32 rate;
+ u16 fs;
+ u8 sr:5;
+ u8 usb:1;
+};
+
+/* codec hifi mclk clock divider coefficients */
+static const struct _coeff_div coeff_div[] = {
+ /* 8k */
+ {12288000, 8000, 1536, 0x6, 0x0},
+ {11289600, 8000, 1408, 0x16, 0x0},
+ {18432000, 8000, 2304, 0x7, 0x0},
+ {16934400, 8000, 2112, 0x17, 0x0},
+ {12000000, 8000, 1500, 0x6, 0x1},
+
+ /* 11.025k */
+ {11289600, 11025, 1024, 0x18, 0x0},
+ {16934400, 11025, 1536, 0x19, 0x0},
+ {12000000, 11025, 1088, 0x19, 0x1},
+
+ /* 16k */
+ {12288000, 16000, 768, 0xa, 0x0},
+ {18432000, 16000, 1152, 0xb, 0x0},
+ {12000000, 16000, 750, 0xa, 0x1},
+
+ /* 22.05k */
+ {11289600, 22050, 512, 0x1a, 0x0},
+ {16934400, 22050, 768, 0x1b, 0x0},
+ {12000000, 22050, 544, 0x1b, 0x1},
+
+ /* 32k */
+ {12288000, 32000, 384, 0xc, 0x0},
+ {18432000, 32000, 576, 0xd, 0x0},
+ {12000000, 32000, 375, 0xa, 0x1},
+
+ /* 44.1k */
+ {11289600, 44100, 256, 0x10, 0x0},
+ {16934400, 44100, 384, 0x11, 0x0},
+ {12000000, 44100, 272, 0x11, 0x1},
+
+ /* 48k */
+ {12288000, 48000, 256, 0x0, 0x0},
+ {18432000, 48000, 384, 0x1, 0x0},
+ {12000000, 48000, 250, 0x0, 0x1},
+
+ /* 88.2k */
+ {11289600, 88200, 128, 0x1e, 0x0},
+ {16934400, 88200, 192, 0x1f, 0x0},
+ {12000000, 88200, 136, 0x1f, 0x1},
+
+ /* 96k */
+ {12288000, 96000, 128, 0xe, 0x0},
+ {18432000, 96000, 192, 0xf, 0x0},
+ {12000000, 96000, 125, 0xe, 0x1},
+};
+
+static int get_coeff(int mclk, int rate)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
+ if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
+ return i;
+ }
+ return -EINVAL;
+}
+
+/* The set of rates we can generate from the above for each SYSCLK */
+static unsigned int rates_12288[] = {
+ 8000, 12000, 16000, 24000, 32000, 48000, 96000
+};
+
+static struct snd_pcm_hw_constraint_list constraints_12288 = {
+ .count = ARRAY_SIZE(rates_12288),
+ .list = rates_12288,
+};
+
+static unsigned int rates_112896[] = {
+ 8000, 11025, 22050, 44100, 88200
+};
+
+static struct snd_pcm_hw_constraint_list constraints_112896 = {
+ .count = ARRAY_SIZE(rates_112896),
+ .list = rates_112896,
+};
+
+static unsigned int rates_18432[] = {
+ 8000, 12000, 16000, 24000, 32000, 48000, 96000
+};
+
+static struct snd_pcm_hw_constraint_list constraints_18432 = {
+ .count = ARRAY_SIZE(rates_18432),
+ .list = rates_18432,
+};
+
+static unsigned int rates_169344[] = {
+ 8000, 11025, 22050, 44100, 88200
+};
+
+static struct snd_pcm_hw_constraint_list constraints_169344 = {
+ .count = ARRAY_SIZE(rates_169344),
+ .list = rates_169344,
+};
+
+static unsigned int rates_12[] = {
+ 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
+ 48000, 88235, 96000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_12 = {
+ .count = ARRAY_SIZE(rates_12),
+ .list = rates_12,
+};
+
+static int wm8973_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+
+ switch (freq) {
+ case 12288000:
+ case 24576000:
+ wm8973->sysclk_constraints = &constraints_12288;
+ wm8973->sysclk = freq;
+ return 0;
+
+ case 11289600:
+ case 22579200:
+ wm8973->sysclk_constraints = &constraints_112896;
+ wm8973->sysclk = freq;
+ return 0;
+
+ case 18432000:
+ case 36864000:
+ wm8973->sysclk_constraints = &constraints_18432;
+ wm8973->sysclk = freq;
+ return 0;
+
+ case 16934400:
+ case 33868800:
+ wm8973->sysclk_constraints = &constraints_169344;
+ wm8973->sysclk = freq;
+ return 0;
+
+ case 12000000:
+ case 24000000:
+ wm8973->sysclk_constraints = &constraints_12;
+ wm8973->sysclk = freq;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int wm8973_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+
+ /* set master/slave audio interface */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0040, 0x0040);
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0002, 0x0002);
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0001, 0x0001);
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0003, 0x0003);
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0013, 0x0013);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0090, 0x0090);
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0080, 0x0080);
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ snd_soc_update_bits(codec, WM8973_IFACE, 0x0010, 0x0010);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int wm8973_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+ u16 iface = snd_soc_read(codec, WM8973_IFACE) & 0x1f3;
+ u16 srate = snd_soc_read(codec, WM8973_SRATE) & 0x1c0;
+ int coeff = get_coeff(wm8973->sysclk, params_rate(params));
+
+ wm8973->playback_fs = params_rate(params);
+
+ /* bit size */
+ switch (params_width(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ iface |= 0x0004;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ iface |= 0x0008;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ iface |= 0x000c;
+ break;
+ }
+
+ wm8973_set_deemph(codec);
+
+ /* set iface & srate */
+ snd_soc_write(codec, WM8973_IFACE, iface);
+ if (coeff >= 0) {
+ snd_soc_write(codec, WM8973_SRATE, srate |
+ (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
+ }
+
+ return 0;
+}
+
+static int wm8973_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u16 mute_reg = snd_soc_read(codec, WM8973_ADCDAC) & 0xfff7;
+
+ if (mute)
+ snd_soc_write(codec, WM8973_ADCDAC, mute_reg | 0x8);
+ else
+ snd_soc_write(codec, WM8973_ADCDAC, mute_reg);
+ return 0;
+}
+
+static int wm8973_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+ u16 pwr_reg = snd_soc_read(codec, WM8973_PWR1) & 0x03e;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ /* set vmid to 50k and unmute dac */
+ snd_soc_write(codec, WM8973_PWR1, pwr_reg | 0x00c2);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+ regcache_sync(wm8973->regmap);
+
+ /* mute dac and set vmid to 500k, enable VREF */
+ snd_soc_write(codec, WM8973_PWR1, pwr_reg | 0x0141);
+ break;
+ case SND_SOC_BIAS_OFF:
+ snd_soc_write(codec, WM8973_PWR1, 0x0001);
+ break;
+ }
+ codec->dapm.bias_level = level;
+
+ return 0;
+}
+
+#define WM8973_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
+ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
+ SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
+
+#define WM8973_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static const struct snd_soc_dai_ops wm8973_dai_ops = {
+ .hw_params = wm8973_pcm_hw_params,
+ .digital_mute = wm8973_mute,
+ .set_fmt = wm8973_set_dai_fmt,
+ .set_sysclk = wm8973_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_driver wm8973_dai[] = {
+ {
+ .name = "wm8973-hifi-playback",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8973_RATES,
+ .formats = WM8973_FORMATS,
+ },
+ .ops = &wm8973_dai_ops,
+ },
+ {
+ .name = "wm8973-hifi-capture",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8973_RATES,
+ .formats = WM8973_FORMATS,
+ },
+ .ops = &wm8973_dai_ops,
+ },
+};
+
+static int wm8973_suspend(struct snd_soc_codec *codec)
+{
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+
+ wm8973_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ regcache_mark_dirty(wm8973->regmap);
+ return 0;
+}
+
+static int wm8973_resume(struct snd_soc_codec *codec)
+{
+ u16 reg;
+
+ wm8973_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ /* charge wm8973 caps */
+ if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
+ reg = snd_soc_read(codec, WM8973_PWR1) & 0xfe3e;
+ snd_soc_write(codec, WM8973_PWR1, reg | 0x01c0);
+ codec->dapm.bias_level = SND_SOC_BIAS_ON;
+ msleep(100);
+ }
+
+ return 0;
+}
+
+static int wm8973_probe(struct snd_soc_codec *codec)
+{
+ struct wm8973_priv *wm8973 = snd_soc_codec_get_drvdata(codec);
+ int ret = 0;
+ u16 reg;
+ const int *p;
+
+ mclk_div = 0;
+
+ codec->control_data = wm8973->regmap;
+
+ snd_soc_write(codec, WM8973_RESET, 0);
+
+ if (codec->dev->of_node) {
+ p = of_get_property(codec->dev->of_node, "mclk-div", NULL);
+ if (p)
+ mclk_div = be32_to_cpu(*p);
+ }
+ /* Master Clock Divide by 2 (0 = not div, 1 = div by 2) */
+ if (mclk_div)
+ snd_soc_update_bits(codec, WM8973_SRATE, 0x0040, 0x0040);
+
+ /* charge output caps - set vmid to 5k for quick power up */
+ reg = snd_soc_read(codec, WM8973_PWR1) & 0x03e;
+ snd_soc_write(codec, WM8973_PWR1, reg | 0x1f0);
+
+ codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
+
+ /* set the update bits */
+ snd_soc_update_bits(codec, WM8973_LDAC, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_RDAC, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_LOUT1V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_ROUT1V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_LOUT2V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_ROUT2V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_LINVOL, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8973_RINVOL, 0x0100, 0x0100);
+
+ return ret;
+}
+
+
+/* power down chip */
+static int wm8973_remove(struct snd_soc_codec *codec)
+{
+ wm8973_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+struct regmap *wm8973_get_regmap(struct device *dev)
+{
+ struct wm8973_priv *priv = dev_get_drvdata(dev);
+
+ return priv->regmap;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_wm8973 = {
+ .probe = wm8973_probe,
+ .remove = wm8973_remove,
+ .suspend = wm8973_suspend,
+ .resume = wm8973_resume,
+ .set_bias_level = wm8973_set_bias_level,
+ .get_regmap = wm8973_get_regmap,
+ .controls = wm8973_snd_controls,
+ .num_controls = ARRAY_SIZE(wm8973_snd_controls),
+ .dapm_widgets = wm8973_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8973_dapm_widgets),
+ .dapm_routes = wm8973_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(wm8973_dapm_routes),
+};
+
+static const struct regmap_config wm8973_regmap = {
+ .reg_bits = 7,
+ .val_bits = 9,
+ .max_register = WM8973_MOUTV,
+ .reg_defaults = wm8973_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8973_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int wm8973_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8973_priv *wm8973;
+ int ret;
+
+ wm8973 = devm_kzalloc(&i2c->dev, sizeof(struct wm8973_priv),
+ GFP_KERNEL);
+ if (wm8973 == NULL)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, wm8973);
+
+ wm8973->regmap = devm_regmap_init_i2c(i2c, &wm8973_regmap);
+ if (IS_ERR(wm8973->regmap)) {
+ ret = PTR_ERR(wm8973->regmap);
+ dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
+
+ return ret;
+ }
+
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm8973,
+ wm8973_dai, ARRAY_SIZE(wm8973_dai));
+
+ return ret;
+}
+
+static int wm8973_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+ return 0;
+}
+
+static const struct i2c_device_id wm8973_i2c_id[] = {
+ { "wm8973", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8973_i2c_id);
+
+static const struct of_device_id wm8973_dt_ids[] = {
+ { .compatible = "wlf,wm8973" },
+ { /* sentinel */ }
+};
+
+static struct i2c_driver wm8973_i2c_driver = {
+ .driver = {
+ .name = "wm8973",
+ .owner = THIS_MODULE,
+ .of_match_table = wm8973_dt_ids,
+ },
+ .probe = wm8973_i2c_probe,
+ .remove = wm8973_i2c_remove,
+ .id_table = wm8973_i2c_id,
+};
+
+module_i2c_driver(wm8973_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC WM8973 driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("*wm8973*");
diff --git a/sound/soc/codecs/wm8973.h b/sound/soc/codecs/wm8973.h
new file mode 100644
index 0000000..5e6a026
--- /dev/null
+++ b/sound/soc/codecs/wm8973.h
@@ -0,0 +1,57 @@
+/*
+ * sound/soc/codecs/wm8973.h -- audio driver for WM8973
+ *
+ * Copyright (C) 2013 - 2014 Fujitsu Semiconductor, Ltd
+ *
+ * Author: Xavier Hsu <xavier.hsu at linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef _WM8973_H
+#define _WM8973_H
+
+#define WM8973_LINVOL 0x00
+#define WM8973_RINVOL 0x01
+#define WM8973_LOUT1V 0x02
+#define WM8973_ROUT1V 0x03
+#define WM8973_ADCDAC 0x05
+#define WM8973_IFACE 0x07
+#define WM8973_SRATE 0x08
+#define WM8973_LDAC 0x0a
+#define WM8973_RDAC 0x0b
+#define WM8973_BASS 0x0c
+#define WM8973_TREBLE 0x0d
+#define WM8973_RESET 0x0f
+#define WM8973_3D 0x10
+#define WM8973_ALC1 0x11
+#define WM8973_ALC2 0x12
+#define WM8973_ALC3 0x13
+#define WM8973_NGATE 0x14
+#define WM8973_LADC 0x15
+#define WM8973_RADC 0x16
+#define WM8973_ADCTL1 0x17
+#define WM8973_ADCTL2 0x18
+#define WM8973_PWR1 0x19
+#define WM8973_PWR2 0x1a
+#define WM8973_ADCTL3 0x1b
+#define WM8973_ADCIN 0x1f
+#define WM8973_LADCIN 0x20
+#define WM8973_RADCIN 0x21
+#define WM8973_LOUTM1 0x22
+#define WM8973_LOUTM2 0x23
+#define WM8973_ROUTM1 0x24
+#define WM8973_ROUTM2 0x25
+#define WM8973_MOUTM1 0x26
+#define WM8973_MOUTM2 0x27
+#define WM8973_LOUT2V 0x28
+#define WM8973_ROUT2V 0x29
+#define WM8973_MOUTV 0x2A
+
+#define WM8973_SYSCLK 0
+
+#endif
--
1.7.9.5
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