| /* |
| * 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/platform_device.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_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 + 1 == 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 */ |
| reg = snd_soc_read(codec, WM8971_LDAC); |
| snd_soc_write(codec, WM8971_LDAC, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8971_RDAC); |
| snd_soc_write(codec, WM8971_RDAC, reg | 0x0100); |
| |
| reg = snd_soc_read(codec, WM8971_LOUT1V); |
| snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8971_ROUT1V); |
| snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100); |
| |
| reg = snd_soc_read(codec, WM8971_LOUT2V); |
| snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8971_ROUT2V); |
| snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100); |
| |
| reg = snd_soc_read(codec, WM8971_LINVOL); |
| snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100); |
| reg = snd_soc_read(codec, WM8971_RINVOL); |
| snd_soc_write(codec, WM8971_RINVOL, reg | 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"); |
