#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/iio/consumer.h>
#include <linux/mfd/wm8994/registers.h>
#include <linux/input-event-codes.h>
#include <linux/module.h>
#include <linux/of.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include "i2s.h"
#include "../codecs/wm8994.h"
#define MCLK1_RATE 24000000U
#define MCLK2_RATE 32768U
#define DEFAULT_FLL1_RATE 11289600U
struct midas_priv {
struct gpio_desc *gpio_fm_sel;
struct gpio_desc *gpio_lineout_sel;
struct gpio_desc *gpio_headset_detect;
struct gpio_desc *gpio_headset_key;
struct iio_channel *adc_headset_detect;
unsigned int fll1_rate;
struct snd_soc_jack headset_jack;
};
static struct snd_soc_jack_pin headset_jack_pins[] = {
{
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
};
static struct snd_soc_jack_zone headset_jack_zones[] = {
{ .jack_type = SND_JACK_HEADPHONE, },
{ .jack_type = SND_JACK_HEADSET, },
{ .jack_type = SND_JACK_HEADPHONE, },
};
static struct snd_soc_jack_zone headset_key_zones[] = {
{ .jack_type = SND_JACK_BTN_0, },
{ .jack_type = SND_JACK_BTN_1, },
{ .jack_type = SND_JACK_BTN_2, },
};
static int headset_jack_check(void *data)
{
struct snd_soc_component *codec = data;
struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(codec);
struct midas_priv *priv = snd_soc_card_get_drvdata(codec->card);
int adc, ret;
int jack_type = 0;
if (!gpiod_get_value_cansleep(priv->gpio_headset_detect))
return 0;
ret = snd_soc_dapm_force_enable_pin(dapm, "headset-mic-bias");
if (ret < 0) {
pr_err("%s: Failed to enable headset mic bias regulator (%d), assuming headphones\n",
__func__, ret);
return SND_JACK_HEADPHONE;
}
snd_soc_dapm_sync(dapm);
msleep(20);
ret = iio_read_channel_processed(priv->adc_headset_detect, &adc);
if (ret) {
pr_err("%s: Failed to read ADC (%d), assuming headphones\n",
__func__, ret);
jack_type = SND_JACK_HEADPHONE;
goto out;
}
pr_debug("%s: ADC value is %d\n", __func__, adc);
jack_type = snd_soc_jack_get_type(&priv->headset_jack, adc);
out:
ret = snd_soc_dapm_disable_pin(dapm, "headset-mic-bias");
if (ret < 0)
pr_err("%s: Failed to disable headset mic bias regulator (%d)\n",
__func__, ret);
snd_soc_dapm_sync(dapm);
return jack_type;
}
static int headset_key_check(void *data)
{
struct snd_soc_component *codec = data;
struct midas_priv *priv = snd_soc_card_get_drvdata(codec->card);
int adc, i, ret;
if (!gpiod_get_value_cansleep(priv->gpio_headset_key))
return 0;
if (!(priv->headset_jack.status & SND_JACK_MICROPHONE))
return 0;
ret = iio_read_channel_processed(priv->adc_headset_detect, &adc);
if (ret) {
pr_err("%s: Failed to read ADC (%d), can't detect key type\n",
__func__, ret);
return 0;
}
pr_debug("%s: ADC value is %d\n", __func__, adc);
for (i = 0; i < ARRAY_SIZE(headset_key_zones); i++) {
if (adc >= headset_key_zones[i].min_mv &&
adc <= headset_key_zones[i].max_mv) {
return headset_key_zones[i].jack_type;
}
}
return 0;
}
static struct snd_soc_jack_gpio headset_gpio[] = {
{
.name = "Headset Jack",
.report = SND_JACK_HEADSET,
.debounce_time = 150,
.jack_status_check = headset_jack_check,
},
{
.name = "Headset Key",
.report = SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2,
.debounce_time = 30,
.jack_status_check = headset_key_check,
},
};
static int midas_start_fll1(struct snd_soc_pcm_runtime *rtd, unsigned int rate)
{
struct snd_soc_card *card = rtd->card;
struct midas_priv *priv = snd_soc_card_get_drvdata(card);
struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
int ret;
if (!rate)
rate = priv->fll1_rate;
if (!rate)
rate = DEFAULT_FLL1_RATE;
if (rate != priv->fll1_rate && priv->fll1_rate) {
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
MCLK2_RATE, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
return ret;
}
}
ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
MCLK1_RATE, rate);
if (ret < 0) {
dev_err(card->dev, "Failed to set FLL1 rate: %d\n", ret);
return ret;
}
priv->fll1_rate = rate;
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_FLL1,
priv->fll1_rate, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(card->dev, "Failed to set SYSCLK source: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK, 0,
SAMSUNG_I2S_OPCLK_PCLK);
if (ret < 0) {
dev_err(card->dev, "Failed to set OPCLK source: %d\n", ret);
return ret;
}
return 0;
}
static int midas_stop_fll1(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct midas_priv *priv = snd_soc_card_get_drvdata(card);
struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
int ret;
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
MCLK2_RATE, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 0, 0, 0);
if (ret < 0) {
dev_err(card->dev, "Unable to stop FLL1: %d\n", ret);
return ret;
}
priv->fll1_rate = 0;
return 0;
}
static int midas_aif1_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
unsigned int pll_out;
if (params_rate(params) == 8000 || params_rate(params) == 11025)
pll_out = params_rate(params) * 512;
else
pll_out = params_rate(params) * 256;
return midas_start_fll1(rtd, pll_out);
}
static const struct snd_soc_ops midas_aif1_ops = {
.hw_params = midas_aif1_hw_params,
};
static int midas_ext_spkmode(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
int ret = 0;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
WM8994_SPKMIXR_TO_SPKOUTL_MASK,
WM8994_SPKMIXR_TO_SPKOUTL);
break;
case SND_SOC_DAPM_POST_PMD:
ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
WM8994_SPKMIXR_TO_SPKOUTL_MASK,
0);
break;
}
return ret;
}
static int midas_fm_set(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm);
struct midas_priv *priv = snd_soc_card_get_drvdata(card);
if (!priv->gpio_fm_sel)
return 0;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
gpiod_set_value_cansleep(priv->gpio_fm_sel, 1);
break;
case SND_SOC_DAPM_POST_PMD:
gpiod_set_value_cansleep(priv->gpio_fm_sel, 0);
break;
}
return 0;
}
static int midas_line_set(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm);
struct midas_priv *priv = snd_soc_card_get_drvdata(card);
if (!priv->gpio_lineout_sel)
return 0;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
gpiod_set_value_cansleep(priv->gpio_lineout_sel, 1);
break;
case SND_SOC_DAPM_POST_PMD:
gpiod_set_value_cansleep(priv->gpio_lineout_sel, 0);
break;
}
return 0;
}
static const struct snd_kcontrol_new midas_controls[] = {
SOC_DAPM_PIN_SWITCH("HP"),
SOC_DAPM_PIN_SWITCH("SPK"),
SOC_DAPM_PIN_SWITCH("RCV"),
SOC_DAPM_PIN_SWITCH("LINE"),
SOC_DAPM_PIN_SWITCH("HDMI"),
SOC_DAPM_PIN_SWITCH("Main Mic"),
SOC_DAPM_PIN_SWITCH("Sub Mic"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("FM In"),
};
static const struct snd_soc_dapm_widget midas_dapm_widgets[] = {
SND_SOC_DAPM_HP("HP", NULL),
SND_SOC_DAPM_SPK("SPK", midas_ext_spkmode),
SND_SOC_DAPM_SPK("RCV", NULL),
SND_SOC_DAPM_LINE("LINE", midas_line_set),
SND_SOC_DAPM_LINE("HDMI", NULL),
SND_SOC_DAPM_LINE("FM In", midas_fm_set),
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_REGULATOR_SUPPLY("headset-mic-bias", 0, 0),
SND_SOC_DAPM_MIC("Main Mic", NULL),
SND_SOC_DAPM_REGULATOR_SUPPLY("mic-bias", 0, 0),
SND_SOC_DAPM_MIC("Sub Mic", NULL),
SND_SOC_DAPM_REGULATOR_SUPPLY("submic-bias", 0, 0),
};
static const struct snd_soc_dapm_route midas_dapm_routes[] = {
{"Main Mic", NULL, "mic-bias"},
{"Sub Mic", NULL, "submic-bias"},
{"Headset Mic", NULL, "headset-mic-bias"},
};
static int midas_set_bias_level(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm,
enum snd_soc_bias_level level)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
&card->dai_link[0]);
struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
if (snd_soc_dapm_to_dev(dapm) != aif1_dai->dev)
return 0;
switch (level) {
case SND_SOC_BIAS_STANDBY:
return midas_stop_fll1(rtd);
case SND_SOC_BIAS_PREPARE:
return midas_start_fll1(rtd, 0);
default:
break;
}
return 0;
}
static int midas_late_probe(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
&card->dai_link[0]);
struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
struct midas_priv *priv = snd_soc_card_get_drvdata(card);
int ret;
ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, MCLK2_RATE,
SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(aif1_dai->dev, "Failed to switch to MCLK2: %d\n", ret);
return ret;
}
if (!priv->gpio_headset_detect) {
ret = snd_soc_card_jack_new_pins(card, "Headset",
SND_JACK_HEADSET | SND_JACK_MECHANICAL |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3 |
SND_JACK_BTN_4 | SND_JACK_BTN_5,
&priv->headset_jack,
headset_jack_pins,
ARRAY_SIZE(headset_jack_pins));
if (ret)
return ret;
wm8958_mic_detect(aif1_dai->component, &priv->headset_jack,
NULL, NULL, NULL, NULL);
} else {
ret = snd_soc_card_jack_new_pins(card, "Headset",
SND_JACK_HEADSET | SND_JACK_BTN_0 |
SND_JACK_BTN_1 | SND_JACK_BTN_2,
&priv->headset_jack,
headset_jack_pins,
ARRAY_SIZE(headset_jack_pins));
if (ret) {
dev_err(card->dev,
"Failed to set up headset pins: %d\n", ret);
return ret;
}
ret = snd_soc_jack_add_zones(&priv->headset_jack,
ARRAY_SIZE(headset_jack_zones),
headset_jack_zones);
if (ret) {
dev_err(card->dev,
"Failed to set up headset zones: %d\n", ret);
return ret;
}
headset_gpio[0].data = aif1_dai->component;
headset_gpio[0].desc = priv->gpio_headset_detect;
headset_gpio[1].data = aif1_dai->component;
headset_gpio[1].desc = priv->gpio_headset_key;
snd_jack_set_key(priv->headset_jack.jack,
SND_JACK_BTN_0, KEY_MEDIA);
snd_jack_set_key(priv->headset_jack.jack,
SND_JACK_BTN_1, KEY_VOLUMEUP);
snd_jack_set_key(priv->headset_jack.jack,
SND_JACK_BTN_2, KEY_VOLUMEDOWN);
ret = snd_soc_jack_add_gpios(&priv->headset_jack,
ARRAY_SIZE(headset_gpio),
headset_gpio);
if (ret)
dev_err(card->dev,
"Failed to set up headset jack GPIOs: %d\n",
ret);
return ret;
}
return 0;
}
static struct snd_soc_dai_driver midas_ext_dai[] = {
{
.name = "Voice call",
.playback = {
.channels_min = 1,
.channels_max = 2,
.rate_min = 8000,
.rate_max = 16000,
.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rate_min = 8000,
.rate_max = 16000,
.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "Bluetooth",
.playback = {
.channels_min = 1,
.channels_max = 2,
.rate_min = 8000,
.rate_max = 16000,
.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rate_min = 8000,
.rate_max = 16000,
.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
static const struct snd_soc_component_driver midas_component = {
.name = "midas-audio",
};
SND_SOC_DAILINK_DEFS(wm1811_hifi,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(wm1811_voice,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(wm1811_bt,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link midas_dai[] = {
{
.name = "WM8994 AIF1",
.stream_name = "HiFi Primary",
.ops = &midas_aif1_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBP_CFP,
SND_SOC_DAILINK_REG(wm1811_hifi),
}, {
.name = "WM1811 Voice",
.stream_name = "Voice call",
.ignore_suspend = 1,
SND_SOC_DAILINK_REG(wm1811_voice),
}, {
.name = "WM1811 BT",
.stream_name = "Bluetooth",
.ignore_suspend = 1,
SND_SOC_DAILINK_REG(wm1811_bt),
},
};
static struct snd_soc_card midas_card = {
.name = "Midas WM1811",
.owner = THIS_MODULE,
.dai_link = midas_dai,
.num_links = ARRAY_SIZE(midas_dai),
.controls = midas_controls,
.num_controls = ARRAY_SIZE(midas_controls),
.dapm_widgets = midas_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(midas_dapm_widgets),
.dapm_routes = midas_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(midas_dapm_routes),
.set_bias_level = midas_set_bias_level,
.late_probe = midas_late_probe,
};
static int midas_probe(struct platform_device *pdev)
{
struct device_node *cpu_dai_node = NULL, *codec_dai_node = NULL;
struct device_node *cpu = NULL, *codec = NULL;
struct snd_soc_card *card = &midas_card;
struct device *dev = &pdev->dev;
static struct snd_soc_dai_link *dai_link;
enum iio_chan_type channel_type;
u32 fourpole_threshold[2];
u32 button_threshold[3];
struct midas_priv *priv;
int ret, i;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
snd_soc_card_set_drvdata(card, priv);
card->dev = dev;
priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
if (IS_ERR(priv->gpio_fm_sel))
return dev_err_probe(dev, PTR_ERR(priv->gpio_fm_sel),
"Failed to get FM selection GPIO\n");
priv->gpio_lineout_sel = devm_gpiod_get_optional(dev, "lineout-sel",
GPIOD_OUT_HIGH);
if (IS_ERR(priv->gpio_lineout_sel))
return dev_err_probe(dev, PTR_ERR(priv->gpio_lineout_sel),
"Failed to get line out selection GPIO\n");
priv->gpio_headset_detect = devm_gpiod_get_optional(dev,
"headset-detect", GPIOD_IN);
if (IS_ERR(priv->gpio_headset_detect))
return dev_err_probe(dev, PTR_ERR(priv->gpio_headset_detect),
"Failed to get headset jack detect GPIO\n");
if (priv->gpio_headset_detect) {
priv->adc_headset_detect = devm_iio_channel_get(dev,
"headset-detect");
if (IS_ERR(priv->adc_headset_detect))
return dev_err_probe(dev,
PTR_ERR(priv->adc_headset_detect),
"Failed to get ADC channel\n");
ret = iio_get_channel_type(priv->adc_headset_detect,
&channel_type);
if (ret) {
dev_err(dev, "Failed to get ADC channel type\n");
return ret;
}
if (channel_type != IIO_VOLTAGE) {
dev_err(dev, "ADC channel is not voltage\n");
return -EINVAL;
}
priv->gpio_headset_key = devm_gpiod_get(dev, "headset-key",
GPIOD_IN);
if (IS_ERR(priv->gpio_headset_key))
return dev_err_probe(dev,
PTR_ERR(priv->gpio_headset_key),
"Failed to get headset key GPIO\n");
ret = of_property_read_u32_array(dev->of_node,
"samsung,headset-4pole-threshold-microvolt",
fourpole_threshold,
ARRAY_SIZE(fourpole_threshold));
if (ret) {
dev_err(dev, "Failed to get 4-pole jack detection threshold\n");
return ret;
}
if (fourpole_threshold[0] > fourpole_threshold[1]) {
dev_err(dev, "Invalid 4-pole jack detection threshold value\n");
return -EINVAL;
}
headset_jack_zones[0].max_mv = (fourpole_threshold[0]);
headset_jack_zones[1].min_mv = (fourpole_threshold[0] + 1);
headset_jack_zones[1].max_mv = (fourpole_threshold[1]);
headset_jack_zones[2].min_mv = (fourpole_threshold[1] + 1);
ret = of_property_read_u32_array(dev->of_node,
"samsung,headset-button-threshold-microvolt",
button_threshold,
ARRAY_SIZE(button_threshold));
if (ret) {
dev_err(dev, "Failed to get headset button detection threshold\n");
return ret;
}
if (button_threshold[0] > button_threshold[1] ||
button_threshold[1] > button_threshold[2]) {
dev_err(dev, "Invalid headset button detection threshold value\n");
return -EINVAL;
}
for (i = 0; i < 3; i++) {
if (i != 0 && button_threshold[i] <= 0) {
dev_err(dev, "Invalid headset button detection threshold value\n");
return -EINVAL;
}
headset_key_zones[i].min_mv = button_threshold[i];
if (i == 2)
headset_key_zones[i].max_mv = UINT_MAX;
else
headset_key_zones[i].max_mv = \
(button_threshold[i+1] - 1);
}
}
ret = snd_soc_of_parse_card_name(card, "model");
if (ret < 0) {
dev_err(dev, "Card name is not specified\n");
return ret;
}
ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
if (ret < 0) {
ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
if (ret < 0) {
dev_err(dev, "Audio routing invalid/unspecified\n");
return ret;
}
}
cpu = of_get_child_by_name(dev->of_node, "cpu");
if (!cpu)
return -EINVAL;
codec = of_get_child_by_name(dev->of_node, "codec");
if (!codec) {
of_node_put(cpu);
return -EINVAL;
}
cpu_dai_node = of_parse_phandle(cpu, "sound-dai", 0);
of_node_put(cpu);
if (!cpu_dai_node) {
dev_err(dev, "parsing cpu/sound-dai failed\n");
of_node_put(codec);
return -EINVAL;
}
codec_dai_node = of_parse_phandle(codec, "sound-dai", 0);
of_node_put(codec);
if (!codec_dai_node) {
dev_err(dev, "audio-codec property invalid/missing\n");
ret = -EINVAL;
goto put_cpu_dai_node;
}
for_each_card_prelinks(card, i, dai_link) {
dai_link->codecs->of_node = codec_dai_node;
dai_link->cpus->of_node = cpu_dai_node;
dai_link->platforms->of_node = cpu_dai_node;
}
ret = devm_snd_soc_register_component(dev, &midas_component,
midas_ext_dai, ARRAY_SIZE(midas_ext_dai));
if (ret < 0) {
dev_err(dev, "Failed to register component: %d\n", ret);
goto put_codec_dai_node;
}
ret = devm_snd_soc_register_card(dev, card);
if (ret < 0) {
dev_err(dev, "Failed to register card: %d\n", ret);
goto put_codec_dai_node;
}
return 0;
put_codec_dai_node:
of_node_put(codec_dai_node);
put_cpu_dai_node:
of_node_put(cpu_dai_node);
return ret;
}
static const struct of_device_id midas_of_match[] = {
{ .compatible = "samsung,midas-audio" },
{ },
};
MODULE_DEVICE_TABLE(of, midas_of_match);
static struct platform_driver midas_driver = {
.driver = {
.name = "midas-audio",
.of_match_table = midas_of_match,
.pm = &snd_soc_pm_ops,
},
.probe = midas_probe,
};
module_platform_driver(midas_driver);
MODULE_AUTHOR("Simon Shields <simon@lineageos.org>");
MODULE_DESCRIPTION("ASoC support for Midas");
MODULE_LICENSE("GPL v2");
