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linux/sound/soc/codecs/wm8770.c
Mark Brown 7aa7ab713b
ASoC: wm8770: Update to use maple tree register cache 
The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache. In
v6.5 it has also acquired the ability to generate multi-register writes in
sync operations, bringing performance up to parity with the rbtree cache
there.

Update the wm8770 driver to use the more modern data structure.

Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230713-asoc-cirrus-maple-v1-26-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-18 14:45:26 +01:00

701 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* wm8770.c -- WM8770 ALSA SoC Audio driver
*
* Copyright 2010 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*/
#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/spi/spi.h>
#include <linux/regmap.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 struct reg_default wm8770_reg_defaults[] = {
{ 0, 0x7f },
{ 1, 0x7f },
{ 2, 0x7f },
{ 3, 0x7f },
{ 4, 0x7f },
{ 5, 0x7f },
{ 6, 0x7f },
{ 7, 0x7f },
{ 8, 0x7f },
{ 9, 0xff },
{ 10, 0xff },
{ 11, 0xff },
{ 12, 0xff },
{ 13, 0xff },
{ 14, 0xff },
{ 15, 0xff },
{ 16, 0xff },
{ 17, 0xff },
{ 18, 0 },
{ 19, 0x90 },
{ 20, 0 },
{ 21, 0 },
{ 22, 0x22 },
{ 23, 0x22 },
{ 24, 0x3e },
{ 25, 0xc },
{ 26, 0xc },
{ 27, 0x100 },
{ 28, 0x189 },
{ 29, 0x189 },
{ 30, 0x8770 },
};
static bool wm8770_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8770_RESET:
return true;
default:
return false;
}
}
struct wm8770_priv {
struct regmap *regmap;
struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
struct snd_soc_component *component;
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) { \
regcache_mark_dirty(wm8770->regmap); \
} \
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 SOC_ENUM_DOUBLE_DECL(ain_enum,
WM8770_ADCMUX, 0, 4, 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_component *component = snd_soc_dapm_to_component(w->dapm);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0);
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_component_update_bits(component, 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_component *component = snd_soc_dapm_to_component(w->dapm);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0);
break;
case SND_SOC_DAPM_POST_PMD:
snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0x180);
break;
}
return 0;
}
static int wm8770_reset(struct snd_soc_component *component)
{
return snd_soc_component_write(component, WM8770_RESET, 0);
}
static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component;
int iface, master;
component = dai->component;
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_component_update_bits(component, WM8770_IFACECTRL, 0xf, iface);
snd_soc_component_update_bits(component, 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_component *component;
struct wm8770_priv *wm8770;
int i;
int iface;
int shift;
int ratio;
component = dai->component;
wm8770 = snd_soc_component_get_drvdata(component);
iface = 0;
switch (params_width(params)) {
case 16:
break;
case 20:
iface |= 0x10;
break;
case 24:
iface |= 0x20;
break;
case 32:
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_component_read(component, 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(component->dev,
"Unable to configure MCLK ratio %d/%d\n",
wm8770->sysclk, params_rate(params));
return -EINVAL;
}
dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]);
snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x7 << shift,
i << shift);
}
snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0x30, iface);
return 0;
}
static int wm8770_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component;
component = dai->component;
return snd_soc_component_update_bits(component, 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_component *component;
struct wm8770_priv *wm8770;
component = dai->component;
wm8770 = snd_soc_component_get_drvdata(component);
wm8770->sysclk = freq;
return 0;
}
static int wm8770_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
int ret;
struct wm8770_priv *wm8770;
wm8770 = snd_soc_component_get_drvdata(component);
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
if (ret) {
dev_err(component->dev,
"Failed to enable supplies: %d\n",
ret);
return ret;
}
regcache_sync(wm8770->regmap);
/* global powerup */
snd_soc_component_write(component, WM8770_PWDNCTRL, 0);
}
break;
case SND_SOC_BIAS_OFF:
/* global powerdown */
snd_soc_component_write(component, WM8770_PWDNCTRL, 1);
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
break;
}
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 = {
.mute_stream = wm8770_mute,
.hw_params = wm8770_hw_params,
.set_fmt = wm8770_set_fmt,
.set_sysclk = wm8770_set_sysclk,
.no_capture_mute = 1,
};
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_rate = 1
};
static int wm8770_probe(struct snd_soc_component *component)
{
struct wm8770_priv *wm8770;
int ret;
wm8770 = snd_soc_component_get_drvdata(component);
wm8770->component = component;
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
if (ret) {
dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
ret = wm8770_reset(component);
if (ret < 0) {
dev_err(component->dev, "Failed to issue reset: %d\n", ret);
goto err_reg_enable;
}
/* latch the volume update bits */
snd_soc_component_update_bits(component, WM8770_MSDIGVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_MSALGVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_VOUT1RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_VOUT2RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_VOUT3RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_VOUT4RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_DAC1RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_DAC2RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_DAC3RVOL, 0x100, 0x100);
snd_soc_component_update_bits(component, WM8770_DAC4RVOL, 0x100, 0x100);
/* mute all DACs */
snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 0x10);
err_reg_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
return ret;
}
static const struct snd_soc_component_driver soc_component_dev_wm8770 = {
.probe = wm8770_probe,
.set_bias_level = wm8770_set_bias_level,
.controls = wm8770_snd_controls,
.num_controls = ARRAY_SIZE(wm8770_snd_controls),
.dapm_widgets = wm8770_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),
.dapm_routes = wm8770_intercon,
.num_dapm_routes = ARRAY_SIZE(wm8770_intercon),
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct of_device_id wm8770_of_match[] = {
{ .compatible = "wlf,wm8770", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8770_of_match);
static const struct regmap_config wm8770_regmap = {
.reg_bits = 7,
.val_bits = 9,
.max_register = WM8770_RESET,
.reg_defaults = wm8770_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults),
.cache_type = REGCACHE_MAPLE,
.volatile_reg = wm8770_volatile_reg,
};
static int wm8770_spi_probe(struct spi_device *spi)
{
struct wm8770_priv *wm8770;
int ret, i;
wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv),
GFP_KERNEL);
if (!wm8770)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
wm8770->supplies[i].supply = wm8770_supply_names[i];
ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies),
wm8770->supplies);
if (ret) {
dev_err(&spi->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 = devm_regulator_register_notifier(
wm8770->supplies[i].consumer,
&wm8770->disable_nb[i]);
if (ret) {
dev_err(&spi->dev,
"Failed to register regulator notifier: %d\n",
ret);
}
}
wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);
if (IS_ERR(wm8770->regmap))
return PTR_ERR(wm8770->regmap);
spi_set_drvdata(spi, wm8770);
ret = devm_snd_soc_register_component(&spi->dev,
&soc_component_dev_wm8770, &wm8770_dai, 1);
return ret;
}
static struct spi_driver wm8770_spi_driver = {
.driver = {
.name = "wm8770",
.of_match_table = wm8770_of_match,
},
.probe = wm8770_spi_probe,
};
module_spi_driver(wm8770_spi_driver);
MODULE_DESCRIPTION("ASoC WM8770 driver");
MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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