- 根目录:
- sound
- soc
- codecs
- wm8770.c
/*
* wm8770.c -- WM8770 ALSA SoC Audio driver
*
* Copyright 2010 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/regulator/consumer.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 <sound/tlv.h>
#include "wm8770.h"
#define WM8770_NUM_SUPPLIES 3
static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
"AVDD1",
"AVDD2",
"DVDD"
};
static const u16 wm8770_reg_defs[WM8770_CACHEREGNUM] = {
0x7f, 0x7f, 0x7f, 0x7f,
0x7f, 0x7f, 0x7f, 0x7f,
0x7f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0, 0x90, 0,
0, 0x22, 0x22, 0x3e,
0xc, 0xc, 0x100, 0x189,
0x189, 0x8770
};
struct wm8770_priv {
enum snd_soc_control_type control_type;
struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
struct snd_soc_codec *codec;
int sysclk;
};
static int vout12supply_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event);
static int vout34supply_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event);
/*
* We can't use the same notifier block for more than one supply and
* there's no way I can see to get from a callback to the caller
* except container_of().
*/
#define WM8770_REGULATOR_EVENT(n) \
static int wm8770_regulator_event_##n(struct notifier_block *nb, \
unsigned long event, void *data) \
{ \
struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \
disable_nb[n]); \
if (event & REGULATOR_EVENT_DISABLE) { \
wm8770->codec->cache_sync = 1; \
} \
return 0; \
}
WM8770_REGULATOR_EVENT(0)
WM8770_REGULATOR_EVENT(1)
WM8770_REGULATOR_EVENT(2)
static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);
static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);
static const char *dac_phase_text[][2] = {
{ "DAC1 Normal", "DAC1 Inverted" },
{ "DAC2 Normal", "DAC2 Inverted" },
{ "DAC3 Normal", "DAC3 Inverted" },
{ "DAC4 Normal", "DAC4 Inverted" },
};
static const struct soc_enum dac_phase[] = {
SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]),
SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]),
SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]),
SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]),
};
static const struct snd_kcontrol_new wm8770_snd_controls[] = {
/* global DAC playback controls */
SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0,
dac_dig_tlv),
SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1),
SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0),
/* global VOUT playback controls */
SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0,
dac_alg_tlv),
SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0),
/* VOUT1/2/3/4 specific controls */
SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL,
WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv),
SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL,
WM8770_VOUT1RVOL, 7, 1, 0),
SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL,
WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv),
SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL,
WM8770_VOUT2RVOL, 7, 1, 0),
SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL,
WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv),
SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL,
WM8770_VOUT3RVOL, 7, 1, 0),
SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL,
WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv),
SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL,
WM8770_VOUT4RVOL, 7, 1, 0),
/* DAC1/2/3/4 specific controls */
SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL,
WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv),
SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0),
SOC_ENUM("DAC1 Phase", dac_phase[0]),
SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL,
WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv),
SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0),
SOC_ENUM("DAC2 Phase", dac_phase[1]),
SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL,
WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv),
SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0),
SOC_ENUM("DAC3 Phase", dac_phase[2]),
SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL,
WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv),
SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0),
SOC_ENUM("DAC4 Phase", dac_phase[3]),
/* ADC specific controls */
SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
0, 31, 0, adc_tlv),
SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
5, 1, 1),
/* other controls */
SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0),
SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1)
};
static const char *ain_text[] = {
"AIN1", "AIN2", "AIN3", "AIN4",
"AIN5", "AIN6", "AIN7", "AIN8"
};
static const struct soc_enum ain_enum =
SOC_ENUM_DOUBLE(WM8770_ADCMUX, 0, 4, 8, ain_text);
static const struct snd_kcontrol_new ain_mux =
SOC_DAPM_ENUM("Capture Mux", ain_enum);
static const struct snd_kcontrol_new vout1_mix_controls[] = {
SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0),
SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0),
SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0)
};
static const struct snd_kcontrol_new vout2_mix_controls[] = {
SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0),
SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0),
SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0)
};
static const struct snd_kcontrol_new vout3_mix_controls[] = {
SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0),
SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0),
SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0)
};
static const struct snd_kcontrol_new vout4_mix_controls[] = {
SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0),
SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0)
};
static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("AUX1"),
SND_SOC_DAPM_INPUT("AUX2"),
SND_SOC_DAPM_INPUT("AUX3"),
SND_SOC_DAPM_INPUT("AIN1"),
SND_SOC_DAPM_INPUT("AIN2"),
SND_SOC_DAPM_INPUT("AIN3"),
SND_SOC_DAPM_INPUT("AIN4"),
SND_SOC_DAPM_INPUT("AIN5"),
SND_SOC_DAPM_INPUT("AIN6"),
SND_SOC_DAPM_INPUT("AIN7"),
SND_SOC_DAPM_INPUT("AIN8"),
SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux),
SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1),
SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1),
SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1),
SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1),
SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1),
SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0,
vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0,
vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0,
vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)),
SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0,
vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)),
SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0,
vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)),
SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0,
vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)),
SND_SOC_DAPM_OUTPUT("VOUT1"),
SND_SOC_DAPM_OUTPUT("VOUT2"),
SND_SOC_DAPM_OUTPUT("VOUT3"),
SND_SOC_DAPM_OUTPUT("VOUT4")
};
static const struct snd_soc_dapm_route wm8770_intercon[] = {
{ "Capture Mux", "AIN1", "AIN1" },
{ "Capture Mux", "AIN2", "AIN2" },
{ "Capture Mux", "AIN3", "AIN3" },
{ "Capture Mux", "AIN4", "AIN4" },
{ "Capture Mux", "AIN5", "AIN5" },
{ "Capture Mux", "AIN6", "AIN6" },
{ "Capture Mux", "AIN7", "AIN7" },
{ "Capture Mux", "AIN8", "AIN8" },
{ "ADC", NULL, "Capture Mux" },
{ "VOUT1 Mixer", NULL, "VOUT12 Supply" },
{ "VOUT1 Mixer", "DAC1 Switch", "DAC1" },
{ "VOUT1 Mixer", "AUX1 Switch", "AUX1" },
{ "VOUT1 Mixer", "Bypass Switch", "Capture Mux" },
{ "VOUT2 Mixer", NULL, "VOUT12 Supply" },
{ "VOUT2 Mixer", "DAC2 Switch", "DAC2" },
{ "VOUT2 Mixer", "AUX2 Switch", "AUX2" },
{ "VOUT2 Mixer", "Bypass Switch", "Capture Mux" },
{ "VOUT3 Mixer", NULL, "VOUT34 Supply" },
{ "VOUT3 Mixer", "DAC3 Switch", "DAC3" },
{ "VOUT3 Mixer", "AUX3 Switch", "AUX3" },
{ "VOUT3 Mixer", "Bypass Switch", "Capture Mux" },
{ "VOUT4 Mixer", NULL, "VOUT34 Supply" },
{ "VOUT4 Mixer", "DAC4 Switch", "DAC4" },
{ "VOUT4 Mixer", "Bypass Switch", "Capture Mux" },
{ "VOUT1", NULL, "VOUT1 Mixer" },
{ "VOUT2", NULL, "VOUT2 Mixer" },
{ "VOUT3", NULL, "VOUT3 Mixer" },
{ "VOUT4", NULL, "VOUT4 Mixer" }
};
static int vout12supply_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec;
codec = w->codec;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0);
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180);
break;
}
return 0;
}
static int vout34supply_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec;
codec = w->codec;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0);
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180);
break;
}
return 0;
}
static int wm8770_reset(struct snd_soc_codec *codec)
{
return snd_soc_write(codec, WM8770_RESET, 0);
}
static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec;
int iface, master;
codec = dai->codec;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
master = 0x100;
break;
case SND_SOC_DAIFMT_CBS_CFS:
master = 0;
break;
default:
return -EINVAL;
}
iface = 0;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
iface |= 0x2;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
iface |= 0x1;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
iface |= 0xc;
break;
case SND_SOC_DAIFMT_IB_NF:
iface |= 0x8;
break;
case SND_SOC_DAIFMT_NB_IF:
iface |= 0x4;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface);
snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master);
return 0;
}
static const int mclk_ratios[] = {
128,
192,
256,
384,
512,
768
};
static int wm8770_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec;
struct wm8770_priv *wm8770;
int i;
int iface;
int shift;
int ratio;
codec = dai->codec;
wm8770 = snd_soc_codec_get_drvdata(codec);
iface = 0;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
iface |= 0x10;
break;
case SNDRV_PCM_FORMAT_S24_LE:
iface |= 0x20;
break;
case SNDRV_PCM_FORMAT_S32_LE:
iface |= 0x30;
break;
}
switch (substream->stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
i = 0;
shift = 4;
break;
case SNDRV_PCM_STREAM_CAPTURE:
i = 2;
shift = 0;
break;
default:
return -EINVAL;
}
/* Only need to set MCLK/LRCLK ratio if we're master */
if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) {
for (; i < ARRAY_SIZE(mclk_ratios); ++i) {
ratio = wm8770->sysclk / params_rate(params);
if (ratio == mclk_ratios[i])
break;
}
if (i == ARRAY_SIZE(mclk_ratios)) {
dev_err(codec->dev,
"Unable to configure MCLK ratio %d/%d\n",
wm8770->sysclk, params_rate(params));
return -EINVAL;
}
dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift,
i << shift);
}
snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface);
return 0;
}
static int wm8770_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec;
codec = dai->codec;
return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10,
!!mute << 4);
}
static int wm8770_set_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec;
struct wm8770_priv *wm8770;
codec = dai->codec;
wm8770 = snd_soc_codec_get_drvdata(codec);
wm8770->sysclk = freq;
return 0;
}
static void wm8770_sync_cache(struct snd_soc_codec *codec)
{
int i;
u16 *cache;
if (!codec->cache_sync)
return;
codec->cache_only = 0;
cache = codec->reg_cache;
for (i = 0; i < codec->driver->reg_cache_size; i++) {
if (i == WM8770_RESET || cache[i] == wm8770_reg_defs[i])
continue;
snd_soc_write(codec, i, cache[i]);
}
codec->cache_sync = 0;
}
static int wm8770_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
int ret;
struct wm8770_priv *wm8770;
wm8770 = snd_soc_codec_get_drvdata(codec);
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
if (ret) {
dev_err(codec->dev,
"Failed to enable supplies: %d\n",
ret);
return ret;
}
wm8770_sync_cache(codec);
/* global powerup */
snd_soc_write(codec, WM8770_PWDNCTRL, 0);
}
break;
case SND_SOC_BIAS_OFF:
/* global powerdown */
snd_soc_write(codec, WM8770_PWDNCTRL, 1);
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
break;
}
codec->dapm.bias_level = level;
return 0;
}
#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_ops wm8770_dai_ops = {
.digital_mute = wm8770_mute,
.hw_params = wm8770_hw_params,
.set_fmt = wm8770_set_fmt,
.set_sysclk = wm8770_set_sysclk,
};
static struct snd_soc_dai_driver wm8770_dai = {
.name = "wm8770-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = WM8770_FORMATS
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = WM8770_FORMATS
},
.ops = &wm8770_dai_ops,
.symmetric_rates = 1
};
#ifdef CONFIG_PM
static int wm8770_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8770_resume(struct snd_soc_codec *codec)
{
wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
#else
#define wm8770_suspend NULL
#define wm8770_resume NULL
#endif
static int wm8770_probe(struct snd_soc_codec *codec)
{
struct wm8770_priv *wm8770;
int ret;
int i;
wm8770 = snd_soc_codec_get_drvdata(codec);
wm8770->codec = codec;
codec->dapm.idle_bias_off = 1;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8770->control_type);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
wm8770->supplies[i].supply = wm8770_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
if (ret) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
/* This should really be moved into the regulator core */
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
ret = regulator_register_notifier(wm8770->supplies[i].consumer,
&wm8770->disable_nb[i]);
if (ret) {
dev_err(codec->dev,
"Failed to register regulator notifier: %d\n",
ret);
}
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
if (ret) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_reg_get;
}
ret = wm8770_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
goto err_reg_enable;
}
wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* latch the volume update bits */
snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100);
/* mute all DACs */
snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10);
snd_soc_add_controls(codec, wm8770_snd_controls,
ARRAY_SIZE(wm8770_snd_controls));
snd_soc_dapm_new_controls(&codec->dapm, wm8770_dapm_widgets,
ARRAY_SIZE(wm8770_dapm_widgets));
snd_soc_dapm_add_routes(&codec->dapm, wm8770_intercon,
ARRAY_SIZE(wm8770_intercon));
return 0;
err_reg_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
err_reg_get:
regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
return ret;
}
static int wm8770_remove(struct snd_soc_codec *codec)
{
struct wm8770_priv *wm8770;
int i;
wm8770 = snd_soc_codec_get_drvdata(codec);
wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
regulator_unregister_notifier(wm8770->supplies[i].consumer,
&wm8770->disable_nb[i]);
regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
.probe = wm8770_probe,
.remove = wm8770_remove,
.suspend = wm8770_suspend,
.resume = wm8770_resume,
.set_bias_level = wm8770_set_bias_level,
.reg_cache_size = ARRAY_SIZE(wm8770_reg_defs),
.reg_word_size = sizeof (u16),
.reg_cache_default = wm8770_reg_defs
};
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8770_spi_probe(struct spi_device *spi)
{
struct wm8770_priv *wm8770;
int ret;
wm8770 = kzalloc(sizeof(struct wm8770_priv), GFP_KERNEL);
if (!wm8770)
return -ENOMEM;
wm8770->control_type = SND_SOC_SPI;
spi_set_drvdata(spi, wm8770);
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8770, &wm8770_dai, 1);
if (ret < 0)
kfree(wm8770);
return ret;
}
static int __devexit wm8770_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
kfree(spi_get_drvdata(spi));
return 0;
}
static struct spi_driver wm8770_spi_driver = {
.driver = {
.name = "wm8770",
.owner = THIS_MODULE,
},
.probe = wm8770_spi_probe,
.remove = __devexit_p(wm8770_spi_remove)
};
#endif
static int __init wm8770_modinit(void)
{
int ret = 0;
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8770_spi_driver);
if (ret) {
printk(KERN_ERR "Failed to register wm8770 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8770_modinit);
static void __exit wm8770_exit(void)
{
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8770_spi_driver);
#endif
}
module_exit(wm8770_exit);
MODULE_DESCRIPTION("ASoC WM8770 driver");
MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");