diff options
Diffstat (limited to 'sound/soc/codecs/wm8971.c')
| -rw-r--r-- | sound/soc/codecs/wm8971.c | 711 |
1 files changed, 711 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8971.c b/sound/soc/codecs/wm8971.c new file mode 100644 index 0000000000..e88f323d28 --- /dev/null +++ b/sound/soc/codecs/wm8971.c @@ -0,0 +1,711 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * wm8971.c -- WM8971 ALSA SoC Audio driver + * + * Copyright 2005 Lab126, Inc. + * + * Author: Kenneth Kiraly <kiraly@lab126.com> + * + * Based on wm8753.c by Liam Girdwood + */ + +#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 "wm8971.h" + +#define WM8971_REG_COUNT 43 + +/* codec private data */ +struct wm8971_priv { + unsigned int sysclk; + struct delayed_work charge_work; + struct regmap *regmap; +}; + +/* + * 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 struct reg_default wm8971_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, 0x00c3 }, + { 22, 0x00c3 }, + { 23, 0x00c0 }, + { 24, 0x0000 }, + { 25, 0x0000 }, + { 26, 0x0000 }, + { 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 }, +}; + +#define wm8971_reset(c) snd_soc_component_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_component *component = codec_dai->component; + struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component); + + 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_component *component = codec_dai->component; + 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_component_write(component, 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_component *component = dai->component; + struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component); + u16 iface = snd_soc_component_read(component, WM8971_IFACE) & 0x1f3; + u16 srate = snd_soc_component_read(component, WM8971_SRATE) & 0x1c0; + int coeff = get_coeff(wm8971->sysclk, params_rate(params)); + + /* bit size */ + switch (params_width(params)) { + case 16: + break; + case 20: + iface |= 0x0004; + break; + case 24: + iface |= 0x0008; + break; + case 32: + iface |= 0x000c; + break; + } + + /* set iface & srate */ + snd_soc_component_write(component, WM8971_IFACE, iface); + if (coeff >= 0) + snd_soc_component_write(component, 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, int direction) +{ + struct snd_soc_component *component = dai->component; + u16 mute_reg = snd_soc_component_read(component, WM8971_ADCDAC) & 0xfff7; + + if (mute) + snd_soc_component_write(component, WM8971_ADCDAC, mute_reg | 0x8); + else + snd_soc_component_write(component, WM8971_ADCDAC, mute_reg); + return 0; +} + +static void wm8971_charge_work(struct work_struct *work) +{ + struct wm8971_priv *wm8971 = + container_of(work, struct wm8971_priv, charge_work.work); + + /* Set to 500k */ + regmap_update_bits(wm8971->regmap, WM8971_PWR1, 0x0180, 0x0100); +} + +static int wm8971_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component); + u16 pwr_reg = snd_soc_component_read(component, WM8971_PWR1) & 0xfe3e; + + switch (level) { + case SND_SOC_BIAS_ON: + /* set vmid to 50k and unmute dac */ + snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x00c1); + break; + case SND_SOC_BIAS_PREPARE: + /* Wait until fully charged */ + flush_delayed_work(&wm8971->charge_work); + break; + case SND_SOC_BIAS_STANDBY: + if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { + snd_soc_component_cache_sync(component); + /* charge output caps - set vmid to 5k for quick power up */ + snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x01c0); + queue_delayed_work(system_power_efficient_wq, + &wm8971->charge_work, msecs_to_jiffies(1000)); + } else { + /* mute dac and set vmid to 500k, enable VREF */ + snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x0140); + } + + break; + case SND_SOC_BIAS_OFF: + cancel_delayed_work_sync(&wm8971->charge_work); + snd_soc_component_write(component, WM8971_PWR1, 0x0001); + break; + } + 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, + .mute_stream = wm8971_mute, + .set_fmt = wm8971_set_dai_fmt, + .set_sysclk = wm8971_set_dai_sysclk, + .no_capture_mute = 1, +}; + +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 int wm8971_probe(struct snd_soc_component *component) +{ + struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component); + + INIT_DELAYED_WORK(&wm8971->charge_work, wm8971_charge_work); + + wm8971_reset(component); + + /* set the update bits */ + snd_soc_component_update_bits(component, WM8971_LDAC, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_RDAC, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_LOUT1V, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_ROUT1V, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_LOUT2V, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_ROUT2V, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_LINVOL, 0x0100, 0x0100); + snd_soc_component_update_bits(component, WM8971_RINVOL, 0x0100, 0x0100); + + return 0; +} + +static const struct snd_soc_component_driver soc_component_dev_wm8971 = { + .probe = wm8971_probe, + .set_bias_level = wm8971_set_bias_level, + .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), + .suspend_bias_off = 1, + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +static const struct regmap_config wm8971_regmap = { + .reg_bits = 7, + .val_bits = 9, + .max_register = WM8971_MOUTV, + + .reg_defaults = wm8971_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults), + .cache_type = REGCACHE_MAPLE, +}; + +static int wm8971_i2c_probe(struct i2c_client *i2c) +{ + struct wm8971_priv *wm8971; + + wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv), + GFP_KERNEL); + if (wm8971 == NULL) + return -ENOMEM; + + wm8971->regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap); + if (IS_ERR(wm8971->regmap)) + return PTR_ERR(wm8971->regmap); + + i2c_set_clientdata(i2c, wm8971); + + return devm_snd_soc_register_component(&i2c->dev, + &soc_component_dev_wm8971, &wm8971_dai, 1); +} + +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", + }, + .probe = wm8971_i2c_probe, + .id_table = wm8971_i2c_id, +}; + +module_i2c_driver(wm8971_i2c_driver); + +MODULE_DESCRIPTION("ASoC WM8971 driver"); +MODULE_AUTHOR("Lab126"); +MODULE_LICENSE("GPL"); |