720 lines
21 KiB
C
720 lines
21 KiB
C
/*
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* wm8971.c -- WM8971 ALSA SoC Audio driver
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*
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* Copyright 2005 Lab126, Inc.
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*
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* Author: Kenneth Kiraly <kiraly@lab126.com>
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*
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* Based on wm8753.c by Liam Girdwood
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include "wm8971.h"
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#define WM8971_REG_COUNT 43
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/* codec private data */
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struct wm8971_priv {
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unsigned int sysclk;
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struct delayed_work charge_work;
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struct regmap *regmap;
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};
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/*
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* wm8971 register cache
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* We can't read the WM8971 register space when we
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* are using 2 wire for device control, so we cache them instead.
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*/
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static const struct reg_default wm8971_reg_defaults[] = {
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{ 0, 0x0097 },
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{ 1, 0x0097 },
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{ 2, 0x0079 },
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{ 3, 0x0079 },
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{ 4, 0x0000 },
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{ 5, 0x0008 },
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{ 6, 0x0000 },
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{ 7, 0x000a },
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{ 8, 0x0000 },
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{ 9, 0x0000 },
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{ 10, 0x00ff },
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{ 11, 0x00ff },
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{ 12, 0x000f },
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{ 13, 0x000f },
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{ 14, 0x0000 },
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{ 15, 0x0000 },
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{ 16, 0x0000 },
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{ 17, 0x007b },
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{ 18, 0x0000 },
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{ 19, 0x0032 },
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{ 20, 0x0000 },
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{ 21, 0x00c3 },
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{ 22, 0x00c3 },
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{ 23, 0x00c0 },
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{ 24, 0x0000 },
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{ 25, 0x0000 },
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{ 26, 0x0000 },
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{ 27, 0x0000 },
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{ 28, 0x0000 },
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{ 29, 0x0000 },
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{ 30, 0x0000 },
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{ 31, 0x0000 },
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{ 32, 0x0000 },
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{ 33, 0x0000 },
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{ 34, 0x0050 },
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{ 35, 0x0050 },
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{ 36, 0x0050 },
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{ 37, 0x0050 },
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{ 38, 0x0050 },
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{ 39, 0x0050 },
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{ 40, 0x0079 },
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{ 41, 0x0079 },
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{ 42, 0x0079 },
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};
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#define wm8971_reset(c) snd_soc_component_write(c, WM8971_RESET, 0)
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/* WM8971 Controls */
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static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
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static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
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"200Hz @ 48kHz" };
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static const char *wm8971_treble[] = { "8kHz", "4kHz" };
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static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
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static const char *wm8971_ng_type[] = { "Constant PGA Gain",
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"Mute ADC Output" };
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static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
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static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
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"Mono (Right)", "Digital Mono"};
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static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
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static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
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"Differential"};
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static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
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"Differential"};
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static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
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static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
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static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
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"L + R Invert"};
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static const struct soc_enum wm8971_enum[] = {
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SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
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SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
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SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
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SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
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SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
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SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
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SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
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SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
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SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
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SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
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SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
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SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
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SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
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SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
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};
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static const struct snd_kcontrol_new wm8971_snd_controls[] = {
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SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
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SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
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6, 1, 0),
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SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
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SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
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WM8971_ROUT1V, 7, 1, 0),
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SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
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WM8971_ROUT2V, 7, 1, 0),
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SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
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SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
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SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
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WM8971_LOUTM2, 4, 7, 1),
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SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
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WM8971_ROUTM2, 4, 7, 1),
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SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
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WM8971_MOUTM2, 4, 7, 1),
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SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
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WM8971_ROUT1V, 0, 127, 0),
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SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
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WM8971_ROUT2V, 0, 127, 0),
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SOC_ENUM("Bass Boost", wm8971_enum[0]),
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SOC_ENUM("Bass Filter", wm8971_enum[1]),
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SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
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SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
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SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
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SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
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SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
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SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
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SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
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SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
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SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
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SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
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SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
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SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
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SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
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SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
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SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
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SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
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SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
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SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
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SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
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SOC_ENUM("Playback Function", wm8971_enum[6]),
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SOC_ENUM("Playback Phase", wm8971_enum[7]),
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SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
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};
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/*
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* DAPM Controls
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*/
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/* Left Mixer */
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static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
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SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
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SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
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SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
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SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
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};
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/* Right Mixer */
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static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
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SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
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SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
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SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
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SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
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};
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/* Mono Mixer */
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static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
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SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
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SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
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SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
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SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
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};
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/* Left Line Mux */
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static const struct snd_kcontrol_new wm8971_left_line_controls =
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SOC_DAPM_ENUM("Route", wm8971_enum[8]);
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/* Right Line Mux */
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static const struct snd_kcontrol_new wm8971_right_line_controls =
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SOC_DAPM_ENUM("Route", wm8971_enum[9]);
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/* Left PGA Mux */
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static const struct snd_kcontrol_new wm8971_left_pga_controls =
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SOC_DAPM_ENUM("Route", wm8971_enum[10]);
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/* Right PGA Mux */
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static const struct snd_kcontrol_new wm8971_right_pga_controls =
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SOC_DAPM_ENUM("Route", wm8971_enum[11]);
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/* Mono ADC Mux */
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static const struct snd_kcontrol_new wm8971_monomux_controls =
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SOC_DAPM_ENUM("Route", wm8971_enum[13]);
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static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
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SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
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&wm8971_left_mixer_controls[0],
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ARRAY_SIZE(wm8971_left_mixer_controls)),
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SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
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&wm8971_right_mixer_controls[0],
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ARRAY_SIZE(wm8971_right_mixer_controls)),
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SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
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&wm8971_mono_mixer_controls[0],
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ARRAY_SIZE(wm8971_mono_mixer_controls)),
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SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
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SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
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SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
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SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
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SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
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SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
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SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
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SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
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SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
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&wm8971_left_pga_controls),
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SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
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&wm8971_right_pga_controls),
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SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
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&wm8971_left_line_controls),
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SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
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&wm8971_right_line_controls),
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SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
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&wm8971_monomux_controls),
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SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
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&wm8971_monomux_controls),
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SND_SOC_DAPM_OUTPUT("LOUT1"),
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SND_SOC_DAPM_OUTPUT("ROUT1"),
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SND_SOC_DAPM_OUTPUT("LOUT2"),
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SND_SOC_DAPM_OUTPUT("ROUT2"),
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SND_SOC_DAPM_OUTPUT("MONO"),
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SND_SOC_DAPM_INPUT("LINPUT1"),
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SND_SOC_DAPM_INPUT("RINPUT1"),
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SND_SOC_DAPM_INPUT("MIC"),
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};
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static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
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/* left mixer */
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{"Left Mixer", "Playback Switch", "Left DAC"},
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{"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
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{"Left Mixer", "Right Playback Switch", "Right DAC"},
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{"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
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/* right mixer */
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{"Right Mixer", "Left Playback Switch", "Left DAC"},
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{"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
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{"Right Mixer", "Playback Switch", "Right DAC"},
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{"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
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/* left out 1 */
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{"Left Out 1", NULL, "Left Mixer"},
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{"LOUT1", NULL, "Left Out 1"},
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/* left out 2 */
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{"Left Out 2", NULL, "Left Mixer"},
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{"LOUT2", NULL, "Left Out 2"},
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/* right out 1 */
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{"Right Out 1", NULL, "Right Mixer"},
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{"ROUT1", NULL, "Right Out 1"},
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/* right out 2 */
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{"Right Out 2", NULL, "Right Mixer"},
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{"ROUT2", NULL, "Right Out 2"},
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/* mono mixer */
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{"Mono Mixer", "Left Playback Switch", "Left DAC"},
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{"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
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{"Mono Mixer", "Right Playback Switch", "Right DAC"},
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{"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
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/* mono out */
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{"Mono Out", NULL, "Mono Mixer"},
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{"MONO1", NULL, "Mono Out"},
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/* Left Line Mux */
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{"Left Line Mux", "Line", "LINPUT1"},
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{"Left Line Mux", "PGA", "Left PGA Mux"},
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{"Left Line Mux", "Differential", "Differential Mux"},
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/* Right Line Mux */
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{"Right Line Mux", "Line", "RINPUT1"},
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{"Right Line Mux", "Mic", "MIC"},
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{"Right Line Mux", "PGA", "Right PGA Mux"},
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{"Right Line Mux", "Differential", "Differential Mux"},
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/* Left PGA Mux */
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{"Left PGA Mux", "Line", "LINPUT1"},
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{"Left PGA Mux", "Differential", "Differential Mux"},
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/* Right PGA Mux */
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{"Right PGA Mux", "Line", "RINPUT1"},
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{"Right PGA Mux", "Differential", "Differential Mux"},
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/* Differential Mux */
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{"Differential Mux", "Line", "LINPUT1"},
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{"Differential Mux", "Line", "RINPUT1"},
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/* Left ADC Mux */
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{"Left ADC Mux", "Stereo", "Left PGA Mux"},
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{"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
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{"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
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/* Right ADC Mux */
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{"Right ADC Mux", "Stereo", "Right PGA Mux"},
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{"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
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{"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
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/* ADC */
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{"Left ADC", NULL, "Left ADC Mux"},
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{"Right ADC", NULL, "Right ADC Mux"},
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};
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struct _coeff_div {
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u32 mclk;
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u32 rate;
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u16 fs;
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u8 sr:5;
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u8 usb:1;
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};
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/* codec hifi mclk clock divider coefficients */
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static const struct _coeff_div coeff_div[] = {
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/* 8k */
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{12288000, 8000, 1536, 0x6, 0x0},
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{11289600, 8000, 1408, 0x16, 0x0},
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{18432000, 8000, 2304, 0x7, 0x0},
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{16934400, 8000, 2112, 0x17, 0x0},
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{12000000, 8000, 1500, 0x6, 0x1},
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/* 11.025k */
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{11289600, 11025, 1024, 0x18, 0x0},
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{16934400, 11025, 1536, 0x19, 0x0},
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{12000000, 11025, 1088, 0x19, 0x1},
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/* 16k */
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{12288000, 16000, 768, 0xa, 0x0},
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{18432000, 16000, 1152, 0xb, 0x0},
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{12000000, 16000, 750, 0xa, 0x1},
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/* 22.05k */
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{11289600, 22050, 512, 0x1a, 0x0},
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{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_read32(component, WM8971_IFACE) & 0x1f3;
|
|
u16 srate = snd_soc_component_read32(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)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
u16 mute_reg = snd_soc_component_read32(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_read32(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,
|
|
.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 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,
|
|
.non_legacy_dai_naming = 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_RBTREE,
|
|
};
|
|
|
|
static 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->regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap);
|
|
if (IS_ERR(wm8971->regmap))
|
|
return PTR_ERR(wm8971->regmap);
|
|
|
|
i2c_set_clientdata(i2c, wm8971);
|
|
|
|
ret = devm_snd_soc_register_component(&i2c->dev,
|
|
&soc_component_dev_wm8971, &wm8971_dai, 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
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");
|