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85e7652d89
linux/sound/soc/codecs/wm8770.c
Lars-Peter Clausen 85e7652d89 ASoC: Constify snd_soc_dai_ops structs 
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure")
introduced the possibility to have constant DAI ops structures, yet this is
barley used in both existing drivers and also new drivers being submitted,
although none of them modifies its DAI ops structure. The later is not
surprising since existing drivers are often used as templates for new drivers.
So this patch just constifies all existing snd_soc_dai_ops structs to eliminate
the issue altogether.

The patch was generated with the following coccinelle semantic patch:
// <smpl>
@@
identifier ops;
@@
-struct snd_soc_dai_ops ops =
+const struct snd_soc_dai_ops ops =
{ ... };
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-23 10:40:46 +00:00

758 lines
20 KiB
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/*
* 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/of_device.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 const 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
};
static const struct of_device_id wm8770_of_match[] = {
{ .compatible = "wlf,wm8770", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8770_of_match);
#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,
.of_match_table = wm8770_of_match,
},
.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");
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