908 lines
25 KiB
C
908 lines
25 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/platform_device.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/soc-dapm.h>
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#include <sound/initval.h>
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#include "wm8971.h"
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#define WM8971_VERSION "0.9"
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#define WM8971_REG_COUNT 43
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static struct workqueue_struct *wm8971_workq = NULL;
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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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};
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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 u16 wm8971_reg[] = {
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0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
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0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
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0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
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0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
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0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
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0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
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0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
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0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
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0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
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0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
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0x0079, 0x0079, 0x0079, /* 40 */
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};
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#define wm8971_reset(c) snd_soc_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_MICBIAS("Mic Bias", WM8971_PWR1, 1, 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 audio_map[] = {
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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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static int wm8971_add_widgets(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
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ARRAY_SIZE(wm8971_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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snd_soc_dapm_new_widgets(codec);
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return 0;
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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},
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{12000000, 22050, 544, 0x1b, 0x1},
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/* 32k */
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{12288000, 32000, 384, 0xc, 0x0},
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{18432000, 32000, 576, 0xd, 0x0},
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{12000000, 32000, 375, 0xa, 0x1},
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/* 44.1k */
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{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 = codec->private_data;
|
|
|
|
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_device *socdev = rtd->socdev;
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
struct wm8971_priv *wm8971 = codec->private_data;
|
|
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->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,
|
|
};
|
|
|
|
struct snd_soc_dai wm8971_dai = {
|
|
.name = "WM8971",
|
|
.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,
|
|
};
|
|
EXPORT_SYMBOL_GPL(wm8971_dai);
|
|
|
|
static void wm8971_work(struct work_struct *work)
|
|
{
|
|
struct snd_soc_codec *codec =
|
|
container_of(work, struct snd_soc_codec, delayed_work.work);
|
|
wm8971_set_bias_level(codec, codec->bias_level);
|
|
}
|
|
|
|
static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8971_resume(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->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->suspend_bias_level == SND_SOC_BIAS_ON) {
|
|
reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
|
|
snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
|
|
codec->bias_level = SND_SOC_BIAS_ON;
|
|
queue_delayed_work(wm8971_workq, &codec->delayed_work,
|
|
msecs_to_jiffies(1000));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm8971_init(struct snd_soc_device *socdev,
|
|
enum snd_soc_control_type control)
|
|
{
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
int reg, ret = 0;
|
|
|
|
codec->name = "WM8971";
|
|
codec->owner = THIS_MODULE;
|
|
codec->set_bias_level = wm8971_set_bias_level;
|
|
codec->dai = &wm8971_dai;
|
|
codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
|
|
codec->num_dai = 1;
|
|
codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
|
|
|
|
if (codec->reg_cache == NULL)
|
|
return -ENOMEM;
|
|
|
|
ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
wm8971_reset(codec);
|
|
|
|
/* register pcms */
|
|
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "wm8971: failed to create pcms\n");
|
|
goto err;
|
|
}
|
|
|
|
/* 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->bias_level = SND_SOC_BIAS_STANDBY;
|
|
queue_delayed_work(wm8971_workq, &codec->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);
|
|
ret = snd_soc_init_card(socdev);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "wm8971: failed to register card\n");
|
|
goto card_err;
|
|
}
|
|
return ret;
|
|
|
|
card_err:
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
err:
|
|
kfree(codec->reg_cache);
|
|
return ret;
|
|
}
|
|
|
|
/* If the i2c layer weren't so broken, we could pass this kind of data
|
|
around */
|
|
static struct snd_soc_device *wm8971_socdev;
|
|
|
|
#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
|
|
|
|
static int wm8971_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct snd_soc_device *socdev = wm8971_socdev;
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
int ret;
|
|
|
|
i2c_set_clientdata(i2c, codec);
|
|
|
|
codec->control_data = i2c;
|
|
|
|
ret = wm8971_init(socdev, SND_SOC_I2C);
|
|
if (ret < 0)
|
|
pr_err("failed to initialise WM8971\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int wm8971_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct snd_soc_codec *codec = i2c_get_clientdata(client);
|
|
kfree(codec->reg_cache);
|
|
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 I2C Codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = wm8971_i2c_probe,
|
|
.remove = wm8971_i2c_remove,
|
|
.id_table = wm8971_i2c_id,
|
|
};
|
|
|
|
static int wm8971_add_i2c_device(struct platform_device *pdev,
|
|
const struct wm8971_setup_data *setup)
|
|
{
|
|
struct i2c_board_info info;
|
|
struct i2c_adapter *adapter;
|
|
struct i2c_client *client;
|
|
int ret;
|
|
|
|
ret = i2c_add_driver(&wm8971_i2c_driver);
|
|
if (ret != 0) {
|
|
dev_err(&pdev->dev, "can't add i2c driver\n");
|
|
return ret;
|
|
}
|
|
|
|
memset(&info, 0, sizeof(struct i2c_board_info));
|
|
info.addr = setup->i2c_address;
|
|
strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
|
|
|
|
adapter = i2c_get_adapter(setup->i2c_bus);
|
|
if (!adapter) {
|
|
dev_err(&pdev->dev, "can't get i2c adapter %d\n",
|
|
setup->i2c_bus);
|
|
goto err_driver;
|
|
}
|
|
|
|
client = i2c_new_device(adapter, &info);
|
|
i2c_put_adapter(adapter);
|
|
if (!client) {
|
|
dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
|
|
(unsigned int)info.addr);
|
|
goto err_driver;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_driver:
|
|
i2c_del_driver(&wm8971_i2c_driver);
|
|
return -ENODEV;
|
|
}
|
|
|
|
#endif
|
|
|
|
static int wm8971_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct wm8971_setup_data *setup;
|
|
struct snd_soc_codec *codec;
|
|
struct wm8971_priv *wm8971;
|
|
int ret = 0;
|
|
|
|
pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
|
|
|
|
setup = socdev->codec_data;
|
|
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
|
|
if (codec == NULL)
|
|
return -ENOMEM;
|
|
|
|
wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
|
|
if (wm8971 == NULL) {
|
|
kfree(codec);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
codec->private_data = wm8971;
|
|
socdev->card->codec = codec;
|
|
mutex_init(&codec->mutex);
|
|
INIT_LIST_HEAD(&codec->dapm_widgets);
|
|
INIT_LIST_HEAD(&codec->dapm_paths);
|
|
wm8971_socdev = socdev;
|
|
|
|
INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
|
|
wm8971_workq = create_workqueue("wm8971");
|
|
if (wm8971_workq == NULL) {
|
|
kfree(codec->private_data);
|
|
kfree(codec);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
|
|
if (setup->i2c_address) {
|
|
ret = wm8971_add_i2c_device(pdev, setup);
|
|
}
|
|
#endif
|
|
/* Add other interfaces here */
|
|
|
|
if (ret != 0) {
|
|
destroy_workqueue(wm8971_workq);
|
|
kfree(codec->private_data);
|
|
kfree(codec);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* power down chip */
|
|
static int wm8971_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
if (codec->control_data)
|
|
wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
if (wm8971_workq)
|
|
destroy_workqueue(wm8971_workq);
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
|
|
i2c_unregister_device(codec->control_data);
|
|
i2c_del_driver(&wm8971_i2c_driver);
|
|
#endif
|
|
kfree(codec->private_data);
|
|
kfree(codec);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct snd_soc_codec_device soc_codec_dev_wm8971 = {
|
|
.probe = wm8971_probe,
|
|
.remove = wm8971_remove,
|
|
.suspend = wm8971_suspend,
|
|
.resume = wm8971_resume,
|
|
};
|
|
|
|
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
|
|
|
|
static int __init wm8971_modinit(void)
|
|
{
|
|
return snd_soc_register_dai(&wm8971_dai);
|
|
}
|
|
module_init(wm8971_modinit);
|
|
|
|
static void __exit wm8971_exit(void)
|
|
{
|
|
snd_soc_unregister_dai(&wm8971_dai);
|
|
}
|
|
module_exit(wm8971_exit);
|
|
|
|
MODULE_DESCRIPTION("ASoC WM8971 driver");
|
|
MODULE_AUTHOR("Lab126");
|
|
MODULE_LICENSE("GPL");
|