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linux/sound/soc/codecs/wm8737.c
Rob Herring 340d79a14d
ASoC: Explicitly include correct DT includes 
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> # for at91
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006-dt-asoc-header-cleanups-v3-1-13a4f0f7fee6@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-09 13:13:56 +01:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* wm8737.c -- WM8737 ALSA SoC Audio driver
*
* Copyright 2010 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*/
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "wm8737.h"
#define WM8737_NUM_SUPPLIES 4
static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = {
"DCVDD",
"DBVDD",
"AVDD",
"MVDD",
};
/* codec private data */
struct wm8737_priv {
struct regmap *regmap;
struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES];
unsigned int mclk;
};
static const struct reg_default wm8737_reg_defaults[] = {
{ 0, 0x00C3 }, /* R0 - Left PGA volume */
{ 1, 0x00C3 }, /* R1 - Right PGA volume */
{ 2, 0x0007 }, /* R2 - AUDIO path L */
{ 3, 0x0007 }, /* R3 - AUDIO path R */
{ 4, 0x0000 }, /* R4 - 3D Enhance */
{ 5, 0x0000 }, /* R5 - ADC Control */
{ 6, 0x0000 }, /* R6 - Power Management */
{ 7, 0x000A }, /* R7 - Audio Format */
{ 8, 0x0000 }, /* R8 - Clocking */
{ 9, 0x000F }, /* R9 - MIC Preamp Control */
{ 10, 0x0003 }, /* R10 - Misc Bias Control */
{ 11, 0x0000 }, /* R11 - Noise Gate */
{ 12, 0x007C }, /* R12 - ALC1 */
{ 13, 0x0000 }, /* R13 - ALC2 */
{ 14, 0x0032 }, /* R14 - ALC3 */
};
static bool wm8737_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8737_RESET:
return true;
default:
return false;
}
}
static int wm8737_reset(struct snd_soc_component *component)
{
return snd_soc_component_write(component, WM8737_RESET, 0);
}
static const DECLARE_TLV_DB_RANGE(micboost_tlv,
0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0),
1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0),
3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0)
);
static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1);
static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0);
static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0);
static const DECLARE_TLV_DB_SCALE(alc_max_tlv, -1200, 600, 0);
static const DECLARE_TLV_DB_SCALE(alc_target_tlv, -1800, 100, 0);
static const char *micbias_enum_text[] = {
"25%",
"50%",
"75%",
"100%",
};
static SOC_ENUM_SINGLE_DECL(micbias_enum,
WM8737_MIC_PREAMP_CONTROL, 0, micbias_enum_text);
static const char *low_cutoff_text[] = {
"Low", "High"
};
static SOC_ENUM_SINGLE_DECL(low_3d,
WM8737_3D_ENHANCE, 6, low_cutoff_text);
static const char *high_cutoff_text[] = {
"High", "Low"
};
static SOC_ENUM_SINGLE_DECL(high_3d,
WM8737_3D_ENHANCE, 5, high_cutoff_text);
static const char *alc_fn_text[] = {
"Disabled", "Right", "Left", "Stereo"
};
static SOC_ENUM_SINGLE_DECL(alc_fn,
WM8737_ALC1, 7, alc_fn_text);
static const char *alc_hold_text[] = {
"0", "2.67ms", "5.33ms", "10.66ms", "21.32ms", "42.64ms", "85.28ms",
"170.56ms", "341.12ms", "682.24ms", "1.364s", "2.728s", "5.458s",
"10.916s", "21.832s", "43.691s"
};
static SOC_ENUM_SINGLE_DECL(alc_hold,
WM8737_ALC2, 0, alc_hold_text);
static const char *alc_atk_text[] = {
"8.4ms", "16.8ms", "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms",
"1.075s", "2.15s", "4.3s", "8.6s"
};
static SOC_ENUM_SINGLE_DECL(alc_atk,
WM8737_ALC3, 0, alc_atk_text);
static const char *alc_dcy_text[] = {
"33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", "1.075s", "2.15s",
"4.3s", "8.6s", "17.2s", "34.41s"
};
static SOC_ENUM_SINGLE_DECL(alc_dcy,
WM8737_ALC3, 4, alc_dcy_text);
static const struct snd_kcontrol_new wm8737_snd_controls[] = {
SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
6, 3, 0, micboost_tlv),
SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
4, 1, 0),
SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
3, 1, 0),
SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME,
WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv),
SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
2, 1, 0),
SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0),
SOC_ENUM("Mic PGA Bias", micbias_enum),
SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0),
SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1),
SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0),
SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0),
SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0),
SOC_ENUM("3D Low Cut-off", low_3d),
SOC_ENUM("3D High Cut-off", high_3d),
SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv),
SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0),
SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0,
ng_tlv),
SOC_ENUM("ALC", alc_fn),
SOC_SINGLE_TLV("ALC Max Gain Volume", WM8737_ALC1, 4, 7, 0, alc_max_tlv),
SOC_SINGLE_TLV("ALC Target Volume", WM8737_ALC1, 0, 15, 0, alc_target_tlv),
SOC_ENUM("ALC Hold Time", alc_hold),
SOC_SINGLE("ALC ZC Switch", WM8737_ALC2, 4, 1, 0),
SOC_ENUM("ALC Attack Time", alc_atk),
SOC_ENUM("ALC Decay Time", alc_dcy),
};
static const char *linsel_text[] = {
"LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC",
};
static SOC_ENUM_SINGLE_DECL(linsel_enum,
WM8737_AUDIO_PATH_L, 7, linsel_text);
static const struct snd_kcontrol_new linsel_mux =
SOC_DAPM_ENUM("LINSEL", linsel_enum);
static const char *rinsel_text[] = {
"RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC",
};
static SOC_ENUM_SINGLE_DECL(rinsel_enum,
WM8737_AUDIO_PATH_R, 7, rinsel_text);
static const struct snd_kcontrol_new rinsel_mux =
SOC_DAPM_ENUM("RINSEL", rinsel_enum);
static const char *bypass_text[] = {
"Direct", "Preamp"
};
static SOC_ENUM_SINGLE_DECL(lbypass_enum,
WM8737_MIC_PREAMP_CONTROL, 2, bypass_text);
static const struct snd_kcontrol_new lbypass_mux =
SOC_DAPM_ENUM("Left Bypass", lbypass_enum);
static SOC_ENUM_SINGLE_DECL(rbypass_enum,
WM8737_MIC_PREAMP_CONTROL, 3, bypass_text);
static const struct snd_kcontrol_new rbypass_mux =
SOC_DAPM_ENUM("Left Bypass", rbypass_enum);
static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("LINPUT1"),
SND_SOC_DAPM_INPUT("LINPUT2"),
SND_SOC_DAPM_INPUT("LINPUT3"),
SND_SOC_DAPM_INPUT("RINPUT1"),
SND_SOC_DAPM_INPUT("RINPUT2"),
SND_SOC_DAPM_INPUT("RINPUT3"),
SND_SOC_DAPM_INPUT("LACIN"),
SND_SOC_DAPM_INPUT("RACIN"),
SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux),
SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux),
SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux),
SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux),
SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0),
SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0),
SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0),
SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0),
};
static const struct snd_soc_dapm_route intercon[] = {
{ "LINSEL", "LINPUT1", "LINPUT1" },
{ "LINSEL", "LINPUT2", "LINPUT2" },
{ "LINSEL", "LINPUT3", "LINPUT3" },
{ "LINSEL", "LINPUT1 DC", "LINPUT1" },
{ "RINSEL", "RINPUT1", "RINPUT1" },
{ "RINSEL", "RINPUT2", "RINPUT2" },
{ "RINSEL", "RINPUT3", "RINPUT3" },
{ "RINSEL", "RINPUT1 DC", "RINPUT1" },
{ "Left Preamp Mux", "Preamp", "LINSEL" },
{ "Left Preamp Mux", "Direct", "LACIN" },
{ "Right Preamp Mux", "Preamp", "RINSEL" },
{ "Right Preamp Mux", "Direct", "RACIN" },
{ "PGAL", NULL, "Left Preamp Mux" },
{ "PGAR", NULL, "Right Preamp Mux" },
{ "ADCL", NULL, "PGAL" },
{ "ADCR", NULL, "PGAR" },
{ "AIF", NULL, "ADCL" },
{ "AIF", NULL, "ADCR" },
};
/* codec mclk clock divider coefficients */
static const struct {
u32 mclk;
u32 rate;
u8 usb;
u8 sr;
} coeff_div[] = {
{ 12288000, 8000, 0, 0x4 },
{ 12288000, 12000, 0, 0x8 },
{ 12288000, 16000, 0, 0xa },
{ 12288000, 24000, 0, 0x1c },
{ 12288000, 32000, 0, 0xc },
{ 12288000, 48000, 0, 0 },
{ 12288000, 96000, 0, 0xe },
{ 11289600, 8000, 0, 0x14 },
{ 11289600, 11025, 0, 0x18 },
{ 11289600, 22050, 0, 0x1a },
{ 11289600, 44100, 0, 0x10 },
{ 11289600, 88200, 0, 0x1e },
{ 18432000, 8000, 0, 0x5 },
{ 18432000, 12000, 0, 0x9 },
{ 18432000, 16000, 0, 0xb },
{ 18432000, 24000, 0, 0x1b },
{ 18432000, 32000, 0, 0xd },
{ 18432000, 48000, 0, 0x1 },
{ 18432000, 96000, 0, 0x1f },
{ 16934400, 8000, 0, 0x15 },
{ 16934400, 11025, 0, 0x19 },
{ 16934400, 22050, 0, 0x1b },
{ 16934400, 44100, 0, 0x11 },
{ 16934400, 88200, 0, 0x1f },
{ 12000000, 8000, 1, 0x4 },
{ 12000000, 11025, 1, 0x19 },
{ 12000000, 12000, 1, 0x8 },
{ 12000000, 16000, 1, 0xa },
{ 12000000, 22050, 1, 0x1b },
{ 12000000, 24000, 1, 0x1c },
{ 12000000, 32000, 1, 0xc },
{ 12000000, 44100, 1, 0x11 },
{ 12000000, 48000, 1, 0x0 },
{ 12000000, 88200, 1, 0x1f },
{ 12000000, 96000, 1, 0xe },
};
static int wm8737_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
int i;
u16 clocking = 0;
u16 af = 0;
for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
if (coeff_div[i].rate != params_rate(params))
continue;
if (coeff_div[i].mclk == wm8737->mclk)
break;
if (coeff_div[i].mclk == wm8737->mclk * 2) {
clocking |= WM8737_CLKDIV2;
break;
}
}
if (i == ARRAY_SIZE(coeff_div)) {
dev_err(component->dev, "%dHz MCLK can't support %dHz\n",
wm8737->mclk, params_rate(params));
return -EINVAL;
}
clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT);
switch (params_width(params)) {
case 16:
break;
case 20:
af |= 0x8;
break;
case 24:
af |= 0x10;
break;
case 32:
af |= 0x18;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af);
snd_soc_component_update_bits(component, WM8737_CLOCKING,
WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK,
clocking);
return 0;
}
static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
int i;
for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
if (freq == coeff_div[i].mclk ||
freq == coeff_div[i].mclk * 2) {
wm8737->mclk = freq;
return 0;
}
}
dev_err(component->dev, "MCLK rate %dHz not supported\n", freq);
return -EINVAL;
}
static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
u16 af = 0;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
af |= WM8737_MS;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
af |= 0x2;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
af |= 0x1;
break;
case SND_SOC_DAIFMT_DSP_A:
af |= 0x3;
break;
case SND_SOC_DAIFMT_DSP_B:
af |= 0x13;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_NB_IF:
af |= WM8737_LRP;
break;
default:
return -EINVAL;
}
snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT,
WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af);
return 0;
}
static int wm8737_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
int ret;
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
/* VMID at 2*75k */
snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL,
WM8737_VMIDSEL_MASK, 0);
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies),
wm8737->supplies);
if (ret != 0) {
dev_err(component->dev,
"Failed to enable supplies: %d\n",
ret);
return ret;
}
regcache_sync(wm8737->regmap);
/* Fast VMID ramp at 2*2.5k */
snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL,
WM8737_VMIDSEL_MASK,
2 << WM8737_VMIDSEL_SHIFT);
/* Bring VMID up */
snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT,
WM8737_VMID_MASK |
WM8737_VREF_MASK,
WM8737_VMID_MASK |
WM8737_VREF_MASK);
msleep(500);
}
/* VMID at 2*300k */
snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL,
WM8737_VMIDSEL_MASK,
1 << WM8737_VMIDSEL_SHIFT);
break;
case SND_SOC_BIAS_OFF:
snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT,
WM8737_VMID_MASK | WM8737_VREF_MASK, 0);
regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies),
wm8737->supplies);
break;
}
return 0;
}
#define WM8737_RATES SNDRV_PCM_RATE_8000_96000
#define WM8737_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 wm8737_dai_ops = {
.hw_params = wm8737_hw_params,
.set_sysclk = wm8737_set_dai_sysclk,
.set_fmt = wm8737_set_dai_fmt,
};
static struct snd_soc_dai_driver wm8737_dai = {
.name = "wm8737",
.capture = {
.stream_name = "Capture",
.channels_min = 2, /* Mono modes not yet supported */
.channels_max = 2,
.rates = WM8737_RATES,
.formats = WM8737_FORMATS,
},
.ops = &wm8737_dai_ops,
};
static int wm8737_probe(struct snd_soc_component *component)
{
struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies),
wm8737->supplies);
if (ret != 0) {
dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
goto err_get;
}
ret = wm8737_reset(component);
if (ret < 0) {
dev_err(component->dev, "Failed to issue reset\n");
goto err_enable;
}
snd_soc_component_update_bits(component, WM8737_LEFT_PGA_VOLUME, WM8737_LVU,
WM8737_LVU);
snd_soc_component_update_bits(component, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU,
WM8737_RVU);
snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
/* Bias level configuration will have done an extra enable */
regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies);
return 0;
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies);
err_get:
return ret;
}
static const struct snd_soc_component_driver soc_component_dev_wm8737 = {
.probe = wm8737_probe,
.set_bias_level = wm8737_set_bias_level,
.controls = wm8737_snd_controls,
.num_controls = ARRAY_SIZE(wm8737_snd_controls),
.dapm_widgets = wm8737_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8737_dapm_widgets),
.dapm_routes = intercon,
.num_dapm_routes = ARRAY_SIZE(intercon),
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct of_device_id wm8737_of_match[] = {
{ .compatible = "wlf,wm8737", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8737_of_match);
static const struct regmap_config wm8737_regmap = {
.reg_bits = 7,
.val_bits = 9,
.max_register = WM8737_MAX_REGISTER,
.reg_defaults = wm8737_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8737_reg_defaults),
.cache_type = REGCACHE_MAPLE,
.volatile_reg = wm8737_volatile,
};
#if IS_ENABLED(CONFIG_I2C)
static int wm8737_i2c_probe(struct i2c_client *i2c)
{
struct wm8737_priv *wm8737;
int ret, i;
wm8737 = devm_kzalloc(&i2c->dev, sizeof(struct wm8737_priv),
GFP_KERNEL);
if (wm8737 == NULL)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++)
wm8737->supplies[i].supply = wm8737_supply_names[i];
ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8737->supplies),
wm8737->supplies);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
wm8737->regmap = devm_regmap_init_i2c(i2c, &wm8737_regmap);
if (IS_ERR(wm8737->regmap))
return PTR_ERR(wm8737->regmap);
i2c_set_clientdata(i2c, wm8737);
ret = devm_snd_soc_register_component(&i2c->dev,
&soc_component_dev_wm8737, &wm8737_dai, 1);
return ret;
}
static const struct i2c_device_id wm8737_i2c_id[] = {
{ "wm8737", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id);
static struct i2c_driver wm8737_i2c_driver = {
.driver = {
.name = "wm8737",
.of_match_table = wm8737_of_match,
},
.probe = wm8737_i2c_probe,
.id_table = wm8737_i2c_id,
};
#endif
#if defined(CONFIG_SPI_MASTER)
static int wm8737_spi_probe(struct spi_device *spi)
{
struct wm8737_priv *wm8737;
int ret, i;
wm8737 = devm_kzalloc(&spi->dev, sizeof(struct wm8737_priv),
GFP_KERNEL);
if (wm8737 == NULL)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++)
wm8737->supplies[i].supply = wm8737_supply_names[i];
ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8737->supplies),
wm8737->supplies);
if (ret != 0) {
dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
wm8737->regmap = devm_regmap_init_spi(spi, &wm8737_regmap);
if (IS_ERR(wm8737->regmap))
return PTR_ERR(wm8737->regmap);
spi_set_drvdata(spi, wm8737);
ret = devm_snd_soc_register_component(&spi->dev,
&soc_component_dev_wm8737, &wm8737_dai, 1);
return ret;
}
static struct spi_driver wm8737_spi_driver = {
.driver = {
.name = "wm8737",
.of_match_table = wm8737_of_match,
},
.probe = wm8737_spi_probe,
};
#endif /* CONFIG_SPI_MASTER */
static int __init wm8737_modinit(void)
{
int ret;
#if IS_ENABLED(CONFIG_I2C)
ret = i2c_add_driver(&wm8737_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8737_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n",
ret);
}
#endif
return 0;
}
module_init(wm8737_modinit);
static void __exit wm8737_exit(void)
{
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8737_spi_driver);
#endif
#if IS_ENABLED(CONFIG_I2C)
i2c_del_driver(&wm8737_i2c_driver);
#endif
}
module_exit(wm8737_exit);
MODULE_DESCRIPTION("ASoC WM8737 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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