zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/sound/soc/codecs/wm8971.c b/ap/os/linux/linux-3.4.x/sound/soc/codecs/wm8971.c
new file mode 100644
index 0000000..28fe59e
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/sound/soc/codecs/wm8971.c
@@ -0,0 +1,745 @@
+/*
+ * wm8971.c -- WM8971 ALSA SoC Audio driver
+ *
+ * Copyright 2005 Lab126, Inc.
+ *
+ * Author: Kenneth Kiraly <kiraly@lab126.com>
+ *
+ * Based on wm8753.c by Liam Girdwood
+ *
+ * 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/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+
+#include "wm8971.h"
+
+#define WM8971_REG_COUNT 43
+
+static struct workqueue_struct *wm8971_workq = NULL;
+
+/* codec private data */
+struct wm8971_priv {
+ enum snd_soc_control_type control_type;
+ unsigned int sysclk;
+};
+
+/*
+ * wm8971 register cache
+ * We can't read the WM8971 register space when we
+ * are using 2 wire for device control, so we cache them instead.
+ */
+static const u16 wm8971_reg[] = {
+ 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
+ 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
+ 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
+ 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
+ 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
+ 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
+ 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
+ 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
+ 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
+ 0x0079, 0x0079, 0x0079, /* 40 */
+};
+
+#define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
+
+/* WM8971 Controls */
+static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
+static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
+ "200Hz @ 48kHz" };
+static const char *wm8971_treble[] = { "8kHz", "4kHz" };
+static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
+static const char *wm8971_ng_type[] = { "Constant PGA Gain",
+ "Mute ADC Output" };
+static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
+static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
+ "Mono (Right)", "Digital Mono"};
+static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
+static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
+ "Differential"};
+static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
+ "Differential"};
+static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
+static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
+static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
+ "L + R Invert"};
+
+static const struct soc_enum wm8971_enum[] = {
+ SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
+ SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
+ SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
+ SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
+ SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
+ SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
+ SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
+ SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
+ SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
+ SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
+ SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
+ SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
+ SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
+ SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
+};
+
+static const struct snd_kcontrol_new wm8971_snd_controls[] = {
+ SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
+ SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
+ 6, 1, 0),
+ SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
+
+ SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
+ WM8971_ROUT1V, 7, 1, 0),
+ SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
+ WM8971_ROUT2V, 7, 1, 0),
+ SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
+
+ SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
+
+ SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
+ WM8971_LOUTM2, 4, 7, 1),
+ SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
+ WM8971_ROUTM2, 4, 7, 1),
+ SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
+ WM8971_MOUTM2, 4, 7, 1),
+
+ SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
+ WM8971_ROUT1V, 0, 127, 0),
+ SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
+ WM8971_ROUT2V, 0, 127, 0),
+
+ SOC_ENUM("Bass Boost", wm8971_enum[0]),
+ SOC_ENUM("Bass Filter", wm8971_enum[1]),
+ SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
+
+ SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
+ SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
+
+ SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
+
+ SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
+ SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
+
+ SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
+ SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
+ SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
+ SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
+ SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
+ SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
+ SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
+ SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
+ SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
+ SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
+
+ SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
+ SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
+
+ SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
+ SOC_ENUM("Playback Function", wm8971_enum[6]),
+ SOC_ENUM("Playback Phase", wm8971_enum[7]),
+
+ SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
+};
+
+/*
+ * DAPM Controls
+ */
+
+/* Left Mixer */
+static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
+SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
+SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
+SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
+};
+
+/* Right Mixer */
+static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
+SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
+SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
+SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
+SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
+};
+
+/* Mono Mixer */
+static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
+SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
+SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
+SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
+};
+
+/* Left Line Mux */
+static const struct snd_kcontrol_new wm8971_left_line_controls =
+SOC_DAPM_ENUM("Route", wm8971_enum[8]);
+
+/* Right Line Mux */
+static const struct snd_kcontrol_new wm8971_right_line_controls =
+SOC_DAPM_ENUM("Route", wm8971_enum[9]);
+
+/* Left PGA Mux */
+static const struct snd_kcontrol_new wm8971_left_pga_controls =
+SOC_DAPM_ENUM("Route", wm8971_enum[10]);
+
+/* Right PGA Mux */
+static const struct snd_kcontrol_new wm8971_right_pga_controls =
+SOC_DAPM_ENUM("Route", wm8971_enum[11]);
+
+/* Mono ADC Mux */
+static const struct snd_kcontrol_new wm8971_monomux_controls =
+SOC_DAPM_ENUM("Route", wm8971_enum[13]);
+
+static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
+ SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
+ &wm8971_left_mixer_controls[0],
+ ARRAY_SIZE(wm8971_left_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
+ &wm8971_right_mixer_controls[0],
+ ARRAY_SIZE(wm8971_right_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
+ &wm8971_mono_mixer_controls[0],
+ ARRAY_SIZE(wm8971_mono_mixer_controls)),
+
+ SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
+ SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
+ SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
+ SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
+ SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
+ SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
+
+ SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
+ &wm8971_left_pga_controls),
+ SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
+ &wm8971_right_pga_controls),
+ SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
+ &wm8971_left_line_controls),
+ SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
+ &wm8971_right_line_controls),
+
+ SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
+ &wm8971_monomux_controls),
+ SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
+ &wm8971_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("MONO"),
+
+ SND_SOC_DAPM_INPUT("LINPUT1"),
+ SND_SOC_DAPM_INPUT("RINPUT1"),
+ SND_SOC_DAPM_INPUT("MIC"),
+};
+
+static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
+ /* left mixer */
+ {"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 */
+ {"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 */
+ {"Left Out 1", NULL, "Left Mixer"},
+ {"LOUT1", NULL, "Left Out 1"},
+
+ /* left out 2 */
+ {"Left Out 2", NULL, "Left Mixer"},
+ {"LOUT2", NULL, "Left Out 2"},
+
+ /* right out 1 */
+ {"Right Out 1", NULL, "Right Mixer"},
+ {"ROUT1", NULL, "Right Out 1"},
+
+ /* right out 2 */
+ {"Right Out 2", NULL, "Right Mixer"},
+ {"ROUT2", NULL, "Right Out 2"},
+
+ /* mono mixer */
+ {"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 */
+ {"Mono Out", NULL, "Mono Mixer"},
+ {"MONO1", NULL, "Mono Out"},
+
+ /* Left Line Mux */
+ {"Left Line Mux", "Line", "LINPUT1"},
+ {"Left Line Mux", "PGA", "Left PGA Mux"},
+ {"Left Line Mux", "Differential", "Differential Mux"},
+
+ /* Right Line Mux */
+ {"Right Line Mux", "Line", "RINPUT1"},
+ {"Right Line Mux", "Mic", "MIC"},
+ {"Right Line Mux", "PGA", "Right PGA Mux"},
+ {"Right Line Mux", "Differential", "Differential Mux"},
+
+ /* Left PGA Mux */
+ {"Left PGA Mux", "Line", "LINPUT1"},
+ {"Left PGA Mux", "Differential", "Differential Mux"},
+
+ /* Right PGA Mux */
+ {"Right PGA Mux", "Line", "RINPUT1"},
+ {"Right PGA Mux", "Differential", "Differential Mux"},
+
+ /* Differential Mux */
+ {"Differential Mux", "Line", "LINPUT1"},
+ {"Differential Mux", "Line", "RINPUT1"},
+
+ /* Left ADC Mux */
+ {"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 */
+ {"Right ADC Mux", "Stereo", "Right PGA Mux"},
+ {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
+ {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
+
+ /* ADC */
+ {"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;
+}
+
+static int wm8971_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 wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
+
+ switch (freq) {
+ case 11289600:
+ case 12000000:
+ case 12288000:
+ case 16934400:
+ case 18432000:
+ wm8971->sysclk = freq;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u16 iface = 0;
+
+ /* set master/slave audio interface */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ iface = 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:
+ iface |= 0x0002;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ iface |= 0x0001;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ iface |= 0x0003;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ iface |= 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:
+ iface |= 0x0090;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ iface |= 0x0080;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ iface |= 0x0010;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_write(codec, WM8971_IFACE, iface);
+ return 0;
+}
+
+static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
+ u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
+ u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
+ int coeff = get_coeff(wm8971->sysclk, params_rate(params));
+
+ /* bit size */
+ switch (params_format(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;
+ }
+
+ /* set iface & srate */
+ snd_soc_write(codec, WM8971_IFACE, iface);
+ if (coeff >= 0)
+ snd_soc_write(codec, WM8971_SRATE, srate |
+ (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
+
+ return 0;
+}
+
+static int wm8971_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
+
+ if (mute)
+ snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
+ else
+ snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
+ return 0;
+}
+
+static int wm8971_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ /* set vmid to 50k and unmute dac */
+ snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+ snd_soc_cache_sync(codec);
+
+ /* mute dac and set vmid to 500k, enable VREF */
+ snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
+ break;
+ case SND_SOC_BIAS_OFF:
+ snd_soc_write(codec, WM8971_PWR1, 0x0001);
+ break;
+ }
+ codec->dapm.bias_level = level;
+ return 0;
+}
+
+#define WM8971_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 WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+static const struct snd_soc_dai_ops wm8971_dai_ops = {
+ .hw_params = wm8971_pcm_hw_params,
+ .digital_mute = wm8971_mute,
+ .set_fmt = wm8971_set_dai_fmt,
+ .set_sysclk = wm8971_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_driver wm8971_dai = {
+ .name = "wm8971-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8971_RATES,
+ .formats = WM8971_FORMATS,},
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8971_RATES,
+ .formats = WM8971_FORMATS,},
+ .ops = &wm8971_dai_ops,
+};
+
+static void wm8971_work(struct work_struct *work)
+{
+ struct snd_soc_dapm_context *dapm =
+ container_of(work, struct snd_soc_dapm_context,
+ delayed_work.work);
+ struct snd_soc_codec *codec = dapm->codec;
+ wm8971_set_bias_level(codec, codec->dapm.bias_level);
+}
+
+static int wm8971_suspend(struct snd_soc_codec *codec)
+{
+ wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ return 0;
+}
+
+static int wm8971_resume(struct snd_soc_codec *codec)
+{
+ u16 reg;
+
+ wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ /* charge wm8971 caps */
+ if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
+ reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
+ snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
+ codec->dapm.bias_level = SND_SOC_BIAS_ON;
+ queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
+ msecs_to_jiffies(1000));
+ }
+
+ return 0;
+}
+
+static int wm8971_probe(struct snd_soc_codec *codec)
+{
+ struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
+ int ret = 0;
+ u16 reg;
+
+ ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type);
+ if (ret < 0) {
+ printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
+ return ret;
+ }
+
+ INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work);
+ wm8971_workq = create_workqueue("wm8971");
+ if (wm8971_workq == NULL)
+ return -ENOMEM;
+
+ wm8971_reset(codec);
+
+ /* charge output caps - set vmid to 5k for quick power up */
+ reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
+ snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
+ codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
+ queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
+ msecs_to_jiffies(1000));
+
+ /* set the update bits */
+ snd_soc_update_bits(codec, WM8971_LDAC, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_RDAC, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_LOUT1V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_ROUT1V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_LOUT2V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_ROUT2V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_LINVOL, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8971_RINVOL, 0x0100, 0x0100);
+
+ return ret;
+}
+
+
+/* power down chip */
+static int wm8971_remove(struct snd_soc_codec *codec)
+{
+ wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ if (wm8971_workq)
+ destroy_workqueue(wm8971_workq);
+ return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
+ .probe = wm8971_probe,
+ .remove = wm8971_remove,
+ .suspend = wm8971_suspend,
+ .resume = wm8971_resume,
+ .set_bias_level = wm8971_set_bias_level,
+ .reg_cache_size = ARRAY_SIZE(wm8971_reg),
+ .reg_word_size = sizeof(u16),
+ .reg_cache_default = wm8971_reg,
+
+ .controls = wm8971_snd_controls,
+ .num_controls = ARRAY_SIZE(wm8971_snd_controls),
+ .dapm_widgets = wm8971_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets),
+ .dapm_routes = wm8971_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes),
+};
+
+static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8971_priv *wm8971;
+ int ret;
+
+ wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
+ GFP_KERNEL);
+ if (wm8971 == NULL)
+ return -ENOMEM;
+
+ wm8971->control_type = SND_SOC_I2C;
+ i2c_set_clientdata(i2c, wm8971);
+
+ ret = snd_soc_register_codec(&i2c->dev,
+ &soc_codec_dev_wm8971, &wm8971_dai, 1);
+
+ return ret;
+}
+
+static __devexit int wm8971_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+ return 0;
+}
+
+static const struct i2c_device_id wm8971_i2c_id[] = {
+ { "wm8971", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
+
+static struct i2c_driver wm8971_i2c_driver = {
+ .driver = {
+ .name = "wm8971",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8971_i2c_probe,
+ .remove = __devexit_p(wm8971_i2c_remove),
+ .id_table = wm8971_i2c_id,
+};
+
+static int __init wm8971_modinit(void)
+{
+ int ret = 0;
+ ret = i2c_add_driver(&wm8971_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n",
+ ret);
+ }
+ return ret;
+}
+module_init(wm8971_modinit);
+
+static void __exit wm8971_exit(void)
+{
+ i2c_del_driver(&wm8971_i2c_driver);
+}
+module_exit(wm8971_exit);
+
+MODULE_DESCRIPTION("ASoC WM8971 driver");
+MODULE_AUTHOR("Lab126");
+MODULE_LICENSE("GPL");