/* * wm8971.c -- WM8971 ALSA SoC Audio driver * * Copyright 2005 Lab126, Inc. * * Author: Kenneth Kiraly * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #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_MICBIAS("Mic Bias", WM8971_PWR1, 1, 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 audio_map[] = { /* 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"}, }; static int wm8971_add_widgets(struct snd_soc_codec *codec) { struct snd_soc_dapm_context *dapm = &codec->dapm; snd_soc_dapm_new_controls(dapm, wm8971_dapm_widgets, ARRAY_SIZE(wm8971_dapm_widgets)); snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); return 0; } 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: /* 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 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, pm_message_t state) { wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static int wm8971_resume(struct snd_soc_codec *codec) { int i; u8 data[2]; u16 *cache = codec->reg_cache; u16 reg; /* Sync reg_cache with the hardware */ for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { if (i == WM8971_RESET) continue; data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); data[1] = cache[i] & 0x00ff; codec->hw_write(codec->control_data, data, 2); } 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); snd_soc_add_controls(codec, wm8971_snd_controls, ARRAY_SIZE(wm8971_snd_controls)); wm8971_add_widgets(codec); 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, }; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) static __devinit int wm8971_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8971_priv *wm8971; int ret; wm8971 = kzalloc(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); if (ret < 0) kfree(wm8971); return ret; } static __devexit int wm8971_i2c_remove(struct i2c_client *client) { snd_soc_unregister_codec(&client->dev); kfree(i2c_get_clientdata(client)); 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-codec", .owner = THIS_MODULE, }, .probe = wm8971_i2c_probe, .remove = __devexit_p(wm8971_i2c_remove), .id_table = wm8971_i2c_id, }; #endif static int __init wm8971_modinit(void) { int ret = 0; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) ret = i2c_add_driver(&wm8971_i2c_driver); if (ret != 0) { printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n", ret); } #endif return ret; } module_init(wm8971_modinit); static void __exit wm8971_exit(void) { #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) i2c_del_driver(&wm8971_i2c_driver); #endif } module_exit(wm8971_exit); MODULE_DESCRIPTION("ASoC WM8971 driver"); MODULE_AUTHOR("Lab126"); MODULE_LICENSE("GPL");