571 lines
16 KiB
C
571 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
//
|
|
// tegra210_dmic.c - Tegra210 DMIC driver
|
|
//
|
|
// Copyright (c) 2020 NVIDIA CORPORATION. All rights reserved.
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/device.h>
|
|
#include <linux/math64.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/regmap.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/soc.h>
|
|
#include "tegra210_dmic.h"
|
|
#include "tegra_cif.h"
|
|
|
|
static const struct reg_default tegra210_dmic_reg_defaults[] = {
|
|
{ TEGRA210_DMIC_TX_INT_MASK, 0x00000001 },
|
|
{ TEGRA210_DMIC_TX_CIF_CTRL, 0x00007700 },
|
|
{ TEGRA210_DMIC_CG, 0x1 },
|
|
{ TEGRA210_DMIC_CTRL, 0x00000301 },
|
|
/* Below enables all filters - DCR, LP and SC */
|
|
{ TEGRA210_DMIC_DBG_CTRL, 0xe },
|
|
/* Below as per latest POR value */
|
|
{ TEGRA210_DMIC_DCR_BIQUAD_0_COEF_4, 0x0 },
|
|
/* LP filter is configured for pass through and used to apply gain */
|
|
{ TEGRA210_DMIC_LP_BIQUAD_0_COEF_0, 0x00800000 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_0_COEF_1, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_0_COEF_2, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_0_COEF_3, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_0_COEF_4, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_1_COEF_0, 0x00800000 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_1_COEF_1, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_1_COEF_2, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_1_COEF_3, 0x0 },
|
|
{ TEGRA210_DMIC_LP_BIQUAD_1_COEF_4, 0x0 },
|
|
};
|
|
|
|
static int __maybe_unused tegra210_dmic_runtime_suspend(struct device *dev)
|
|
{
|
|
struct tegra210_dmic *dmic = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(dmic->regmap, true);
|
|
regcache_mark_dirty(dmic->regmap);
|
|
|
|
clk_disable_unprepare(dmic->clk_dmic);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused tegra210_dmic_runtime_resume(struct device *dev)
|
|
{
|
|
struct tegra210_dmic *dmic = dev_get_drvdata(dev);
|
|
int err;
|
|
|
|
err = clk_prepare_enable(dmic->clk_dmic);
|
|
if (err) {
|
|
dev_err(dev, "failed to enable DMIC clock, err: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
regcache_cache_only(dmic->regmap, false);
|
|
regcache_sync(dmic->regmap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct tegra210_dmic *dmic = snd_soc_dai_get_drvdata(dai);
|
|
unsigned int srate, clk_rate, channels;
|
|
struct tegra_cif_conf cif_conf;
|
|
unsigned long long gain_q23 = DEFAULT_GAIN_Q23;
|
|
int err;
|
|
|
|
memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
|
|
|
|
channels = params_channels(params);
|
|
|
|
cif_conf.audio_ch = channels;
|
|
|
|
switch (dmic->ch_select) {
|
|
case DMIC_CH_SELECT_LEFT:
|
|
case DMIC_CH_SELECT_RIGHT:
|
|
cif_conf.client_ch = 1;
|
|
break;
|
|
case DMIC_CH_SELECT_STEREO:
|
|
cif_conf.client_ch = 2;
|
|
break;
|
|
default:
|
|
dev_err(dai->dev, "invalid DMIC client channels\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
srate = params_rate(params);
|
|
|
|
/*
|
|
* DMIC clock rate is a multiple of 'Over Sampling Ratio' and
|
|
* 'Sample Rate'. The supported OSR values are 64, 128 and 256.
|
|
*/
|
|
clk_rate = (DMIC_OSR_FACTOR << dmic->osr_val) * srate;
|
|
|
|
err = clk_set_rate(dmic->clk_dmic, clk_rate);
|
|
if (err) {
|
|
dev_err(dai->dev, "can't set DMIC clock rate %u, err: %d\n",
|
|
clk_rate, err);
|
|
return err;
|
|
}
|
|
|
|
regmap_update_bits(dmic->regmap,
|
|
/* Reg */
|
|
TEGRA210_DMIC_CTRL,
|
|
/* Mask */
|
|
TEGRA210_DMIC_CTRL_LRSEL_POLARITY_MASK |
|
|
TEGRA210_DMIC_CTRL_OSR_MASK |
|
|
TEGRA210_DMIC_CTRL_CHANNEL_SELECT_MASK,
|
|
/* Value */
|
|
(dmic->lrsel << LRSEL_POL_SHIFT) |
|
|
(dmic->osr_val << OSR_SHIFT) |
|
|
((dmic->ch_select + 1) << CH_SEL_SHIFT));
|
|
|
|
/*
|
|
* Use LP filter gain register to apply boost.
|
|
* Boost Gain Volume control has 100x factor.
|
|
*/
|
|
if (dmic->boost_gain)
|
|
gain_q23 = div_u64(gain_q23 * dmic->boost_gain, 100);
|
|
|
|
regmap_write(dmic->regmap, TEGRA210_DMIC_LP_FILTER_GAIN,
|
|
(unsigned int)gain_q23);
|
|
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
cif_conf.audio_bits = TEGRA_ACIF_BITS_16;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S32_LE:
|
|
cif_conf.audio_bits = TEGRA_ACIF_BITS_32;
|
|
break;
|
|
default:
|
|
dev_err(dai->dev, "unsupported format!\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
cif_conf.client_bits = TEGRA_ACIF_BITS_24;
|
|
cif_conf.mono_conv = dmic->mono_to_stereo;
|
|
cif_conf.stereo_conv = dmic->stereo_to_mono;
|
|
|
|
tegra_set_cif(dmic->regmap, TEGRA210_DMIC_TX_CIF_CTRL, &cif_conf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_get_boost_gain(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
|
|
ucontrol->value.integer.value[0] = dmic->boost_gain;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_put_boost_gain(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
int value = ucontrol->value.integer.value[0];
|
|
|
|
if (value == dmic->boost_gain)
|
|
return 0;
|
|
|
|
dmic->boost_gain = value;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int tegra210_dmic_get_ch_select(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
|
|
ucontrol->value.enumerated.item[0] = dmic->ch_select;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_put_ch_select(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
unsigned int value = ucontrol->value.enumerated.item[0];
|
|
|
|
if (value == dmic->ch_select)
|
|
return 0;
|
|
|
|
dmic->ch_select = value;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int tegra210_dmic_get_mono_to_stereo(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
|
|
ucontrol->value.enumerated.item[0] = dmic->mono_to_stereo;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_put_mono_to_stereo(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
unsigned int value = ucontrol->value.enumerated.item[0];
|
|
|
|
if (value == dmic->mono_to_stereo)
|
|
return 0;
|
|
|
|
dmic->mono_to_stereo = value;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int tegra210_dmic_get_stereo_to_mono(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
|
|
ucontrol->value.enumerated.item[0] = dmic->stereo_to_mono;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_put_stereo_to_mono(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
unsigned int value = ucontrol->value.enumerated.item[0];
|
|
|
|
if (value == dmic->stereo_to_mono)
|
|
return 0;
|
|
|
|
dmic->stereo_to_mono = value;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int tegra210_dmic_get_osr_val(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
|
|
ucontrol->value.enumerated.item[0] = dmic->osr_val;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_put_osr_val(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
unsigned int value = ucontrol->value.enumerated.item[0];
|
|
|
|
if (value == dmic->osr_val)
|
|
return 0;
|
|
|
|
dmic->osr_val = value;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int tegra210_dmic_get_pol_sel(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
|
|
ucontrol->value.enumerated.item[0] = dmic->lrsel;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_put_pol_sel(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
|
|
struct tegra210_dmic *dmic = snd_soc_component_get_drvdata(comp);
|
|
unsigned int value = ucontrol->value.enumerated.item[0];
|
|
|
|
if (value == dmic->lrsel)
|
|
return 0;
|
|
|
|
dmic->lrsel = value;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops tegra210_dmic_dai_ops = {
|
|
.hw_params = tegra210_dmic_hw_params,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver tegra210_dmic_dais[] = {
|
|
{
|
|
.name = "DMIC-CIF",
|
|
.capture = {
|
|
.stream_name = "CIF-Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_48000,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE,
|
|
},
|
|
},
|
|
{
|
|
.name = "DMIC-DAP",
|
|
.capture = {
|
|
.stream_name = "DAP-Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_48000,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE,
|
|
},
|
|
.ops = &tegra210_dmic_dai_ops,
|
|
.symmetric_rate = 1,
|
|
},
|
|
};
|
|
|
|
static const struct snd_soc_dapm_widget tegra210_dmic_widgets[] = {
|
|
SND_SOC_DAPM_AIF_OUT("TX", NULL, 0, TEGRA210_DMIC_ENABLE, 0, 0),
|
|
SND_SOC_DAPM_MIC("MIC", NULL),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route tegra210_dmic_routes[] = {
|
|
{ "XBAR-RX", NULL, "XBAR-Capture" },
|
|
{ "XBAR-Capture", NULL, "CIF-Capture" },
|
|
{ "CIF-Capture", NULL, "TX" },
|
|
{ "TX", NULL, "DAP-Capture" },
|
|
{ "DAP-Capture", NULL, "MIC" },
|
|
};
|
|
|
|
static const char * const tegra210_dmic_ch_select[] = {
|
|
"Left", "Right", "Stereo",
|
|
};
|
|
|
|
static const struct soc_enum tegra210_dmic_ch_enum =
|
|
SOC_ENUM_SINGLE(0, 0, ARRAY_SIZE(tegra210_dmic_ch_select),
|
|
tegra210_dmic_ch_select);
|
|
|
|
static const char * const tegra210_dmic_mono_conv_text[] = {
|
|
"Zero", "Copy",
|
|
};
|
|
|
|
static const char * const tegra210_dmic_stereo_conv_text[] = {
|
|
"CH0", "CH1", "AVG",
|
|
};
|
|
|
|
static const struct soc_enum tegra210_dmic_mono_conv_enum =
|
|
SOC_ENUM_SINGLE(0, 0, ARRAY_SIZE(tegra210_dmic_mono_conv_text),
|
|
tegra210_dmic_mono_conv_text);
|
|
|
|
static const struct soc_enum tegra210_dmic_stereo_conv_enum =
|
|
SOC_ENUM_SINGLE(0, 0, ARRAY_SIZE(tegra210_dmic_stereo_conv_text),
|
|
tegra210_dmic_stereo_conv_text);
|
|
|
|
static const char * const tegra210_dmic_osr_text[] = {
|
|
"OSR_64", "OSR_128", "OSR_256",
|
|
};
|
|
|
|
static const struct soc_enum tegra210_dmic_osr_enum =
|
|
SOC_ENUM_SINGLE(0, 0, ARRAY_SIZE(tegra210_dmic_osr_text),
|
|
tegra210_dmic_osr_text);
|
|
|
|
static const char * const tegra210_dmic_lrsel_text[] = {
|
|
"Left", "Right",
|
|
};
|
|
|
|
static const struct soc_enum tegra210_dmic_lrsel_enum =
|
|
SOC_ENUM_SINGLE(0, 0, ARRAY_SIZE(tegra210_dmic_lrsel_text),
|
|
tegra210_dmic_lrsel_text);
|
|
|
|
static const struct snd_kcontrol_new tegra210_dmic_controls[] = {
|
|
SOC_SINGLE_EXT("Boost Gain Volume", 0, 0, MAX_BOOST_GAIN, 0,
|
|
tegra210_dmic_get_boost_gain,
|
|
tegra210_dmic_put_boost_gain),
|
|
SOC_ENUM_EXT("Channel Select", tegra210_dmic_ch_enum,
|
|
tegra210_dmic_get_ch_select, tegra210_dmic_put_ch_select),
|
|
SOC_ENUM_EXT("Mono To Stereo",
|
|
tegra210_dmic_mono_conv_enum,
|
|
tegra210_dmic_get_mono_to_stereo,
|
|
tegra210_dmic_put_mono_to_stereo),
|
|
SOC_ENUM_EXT("Stereo To Mono",
|
|
tegra210_dmic_stereo_conv_enum,
|
|
tegra210_dmic_get_stereo_to_mono,
|
|
tegra210_dmic_put_stereo_to_mono),
|
|
SOC_ENUM_EXT("OSR Value", tegra210_dmic_osr_enum,
|
|
tegra210_dmic_get_osr_val, tegra210_dmic_put_osr_val),
|
|
SOC_ENUM_EXT("LR Polarity Select", tegra210_dmic_lrsel_enum,
|
|
tegra210_dmic_get_pol_sel, tegra210_dmic_put_pol_sel),
|
|
};
|
|
|
|
static const struct snd_soc_component_driver tegra210_dmic_compnt = {
|
|
.dapm_widgets = tegra210_dmic_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(tegra210_dmic_widgets),
|
|
.dapm_routes = tegra210_dmic_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(tegra210_dmic_routes),
|
|
.controls = tegra210_dmic_controls,
|
|
.num_controls = ARRAY_SIZE(tegra210_dmic_controls),
|
|
};
|
|
|
|
static bool tegra210_dmic_wr_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case TEGRA210_DMIC_TX_INT_MASK ... TEGRA210_DMIC_TX_CIF_CTRL:
|
|
case TEGRA210_DMIC_ENABLE ... TEGRA210_DMIC_CG:
|
|
case TEGRA210_DMIC_CTRL:
|
|
case TEGRA210_DMIC_DBG_CTRL:
|
|
case TEGRA210_DMIC_DCR_BIQUAD_0_COEF_4 ... TEGRA210_DMIC_LP_BIQUAD_1_COEF_4:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool tegra210_dmic_rd_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
if (tegra210_dmic_wr_reg(dev, reg))
|
|
return true;
|
|
|
|
switch (reg) {
|
|
case TEGRA210_DMIC_TX_STATUS:
|
|
case TEGRA210_DMIC_TX_INT_STATUS:
|
|
case TEGRA210_DMIC_STATUS:
|
|
case TEGRA210_DMIC_INT_STATUS:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool tegra210_dmic_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case TEGRA210_DMIC_TX_STATUS:
|
|
case TEGRA210_DMIC_TX_INT_STATUS:
|
|
case TEGRA210_DMIC_TX_INT_SET:
|
|
case TEGRA210_DMIC_SOFT_RESET:
|
|
case TEGRA210_DMIC_STATUS:
|
|
case TEGRA210_DMIC_INT_STATUS:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static const struct regmap_config tegra210_dmic_regmap_config = {
|
|
.reg_bits = 32,
|
|
.reg_stride = 4,
|
|
.val_bits = 32,
|
|
.max_register = TEGRA210_DMIC_LP_BIQUAD_1_COEF_4,
|
|
.writeable_reg = tegra210_dmic_wr_reg,
|
|
.readable_reg = tegra210_dmic_rd_reg,
|
|
.volatile_reg = tegra210_dmic_volatile_reg,
|
|
.reg_defaults = tegra210_dmic_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(tegra210_dmic_reg_defaults),
|
|
.cache_type = REGCACHE_FLAT,
|
|
};
|
|
|
|
static int tegra210_dmic_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct tegra210_dmic *dmic;
|
|
void __iomem *regs;
|
|
int err;
|
|
|
|
dmic = devm_kzalloc(dev, sizeof(*dmic), GFP_KERNEL);
|
|
if (!dmic)
|
|
return -ENOMEM;
|
|
|
|
dmic->osr_val = DMIC_OSR_64;
|
|
dmic->ch_select = DMIC_CH_SELECT_STEREO;
|
|
dmic->lrsel = DMIC_LRSEL_LEFT;
|
|
dmic->boost_gain = 0;
|
|
dmic->stereo_to_mono = 0; /* "CH0" */
|
|
|
|
dev_set_drvdata(dev, dmic);
|
|
|
|
dmic->clk_dmic = devm_clk_get(dev, "dmic");
|
|
if (IS_ERR(dmic->clk_dmic)) {
|
|
dev_err(dev, "can't retrieve DMIC clock\n");
|
|
return PTR_ERR(dmic->clk_dmic);
|
|
}
|
|
|
|
regs = devm_platform_ioremap_resource(pdev, 0);
|
|
if (IS_ERR(regs))
|
|
return PTR_ERR(regs);
|
|
|
|
dmic->regmap = devm_regmap_init_mmio(dev, regs,
|
|
&tegra210_dmic_regmap_config);
|
|
if (IS_ERR(dmic->regmap)) {
|
|
dev_err(dev, "regmap init failed\n");
|
|
return PTR_ERR(dmic->regmap);
|
|
}
|
|
|
|
regcache_cache_only(dmic->regmap, true);
|
|
|
|
err = devm_snd_soc_register_component(dev, &tegra210_dmic_compnt,
|
|
tegra210_dmic_dais,
|
|
ARRAY_SIZE(tegra210_dmic_dais));
|
|
if (err) {
|
|
dev_err(dev, "can't register DMIC component, err: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
pm_runtime_enable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra210_dmic_remove(struct platform_device *pdev)
|
|
{
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops tegra210_dmic_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(tegra210_dmic_runtime_suspend,
|
|
tegra210_dmic_runtime_resume, NULL)
|
|
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
|
pm_runtime_force_resume)
|
|
};
|
|
|
|
static const struct of_device_id tegra210_dmic_of_match[] = {
|
|
{ .compatible = "nvidia,tegra210-dmic" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tegra210_dmic_of_match);
|
|
|
|
static struct platform_driver tegra210_dmic_driver = {
|
|
.driver = {
|
|
.name = "tegra210-dmic",
|
|
.of_match_table = tegra210_dmic_of_match,
|
|
.pm = &tegra210_dmic_pm_ops,
|
|
},
|
|
.probe = tegra210_dmic_probe,
|
|
.remove = tegra210_dmic_remove,
|
|
};
|
|
module_platform_driver(tegra210_dmic_driver)
|
|
|
|
MODULE_AUTHOR("Rahul Mittal <rmittal@nvidia.com>");
|
|
MODULE_DESCRIPTION("Tegra210 ASoC DMIC driver");
|
|
MODULE_LICENSE("GPL v2");
|