// SPDX-License-Identifier: GPL-2.0+
#include <linux/extcon.h>
#include <linux/gpio/consumer.h>
#include <linux/iio/consumer.h>
#include <linux/input-event-codes.h>
#include <linux/mfd/wm8994/registers.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <sound/jack.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "i2s.h"
#include "../codecs/wm8994.h"
#define ARIES_MCLK1_FREQ 24000000
struct aries_wm8994_variant {
unsigned int modem_dai_fmt;
bool has_fm_radio;
};
struct aries_wm8994_data {
struct extcon_dev *usb_extcon;
struct regulator *reg_main_micbias;
struct regulator *reg_headset_micbias;
struct gpio_desc *gpio_headset_detect;
struct gpio_desc *gpio_headset_key;
struct gpio_desc *gpio_earpath_sel;
struct iio_channel *adc;
const struct aries_wm8994_variant *variant;
};
/* USB dock */
static struct snd_soc_jack aries_dock;
static struct snd_soc_jack_pin dock_pins[] = {
{
.pin = "LINE",
.mask = SND_JACK_LINEOUT,
},
};
static int aries_extcon_notifier(struct notifier_block *this,
unsigned long connected, void *_cmd)
{
if (connected)
snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT,
SND_JACK_LINEOUT);
else
snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT);
return NOTIFY_DONE;
}
static struct notifier_block aries_extcon_notifier_block = {
.notifier_call = aries_extcon_notifier,
};
/* Headset jack */
static struct snd_soc_jack aries_headset;
static struct snd_soc_jack_pin jack_pins[] = {
{
.pin = "HP",
.mask = SND_JACK_HEADPHONE,
}, {
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
};
static struct snd_soc_jack_zone headset_zones[] = {
{
.min_mv = 0,
.max_mv = 241,
.jack_type = SND_JACK_HEADPHONE,
}, {
.min_mv = 242,
.max_mv = 2980,
.jack_type = SND_JACK_HEADSET,
}, {
.min_mv = 2981,
.max_mv = UINT_MAX,
.jack_type = SND_JACK_HEADPHONE,
},
};
static irqreturn_t headset_det_irq_thread(int irq, void *data)
{
struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data;
int ret = 0;
int time_left_ms = 300;
int adc;
while (time_left_ms > 0) {
if (!gpiod_get_value(priv->gpio_headset_detect)) {
snd_soc_jack_report(&aries_headset, 0,
SND_JACK_HEADSET);
gpiod_set_value(priv->gpio_earpath_sel, 0);
return IRQ_HANDLED;
}
msleep(20);
time_left_ms -= 20;
}
/* Temporarily enable micbias and earpath selector */
ret = regulator_enable(priv->reg_headset_micbias);
if (ret)
pr_err("%s failed to enable micbias: %d", __func__, ret);
gpiod_set_value(priv->gpio_earpath_sel, 1);
ret = iio_read_channel_processed(priv->adc, &adc);
if (ret < 0) {
/* failed to read ADC, so assume headphone */
pr_err("%s failed to read ADC, assuming headphones", __func__);
snd_soc_jack_report(&aries_headset, SND_JACK_HEADPHONE,
SND_JACK_HEADSET);
} else {
snd_soc_jack_report(&aries_headset,
snd_soc_jack_get_type(&aries_headset, adc),
SND_JACK_HEADSET);
}
ret = regulator_disable(priv->reg_headset_micbias);
if (ret)
pr_err("%s failed disable micbias: %d", __func__, ret);
/* Disable earpath selector when no mic connected */
if (!(aries_headset.status & SND_JACK_MICROPHONE))
gpiod_set_value(priv->gpio_earpath_sel, 0);
return IRQ_HANDLED;
}
static int headset_button_check(void *data)
{
struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data;
/* Filter out keypresses when 4 pole jack not detected */
if (gpiod_get_value_cansleep(priv->gpio_headset_key) &&
aries_headset.status & SND_JACK_MICROPHONE)
return SND_JACK_BTN_0;
return 0;
}
static struct snd_soc_jack_gpio headset_button_gpio[] = {
{
.name = "Media Button",
.report = SND_JACK_BTN_0,
.debounce_time = 30,
.jack_status_check = headset_button_check,
},
};
static int aries_spk_cfg(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_card *card = w->dapm->card;
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_component *component;
int ret = 0;
rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
component = snd_soc_rtd_to_codec(rtd, 0)->component;
/**
* We have an odd setup - the SPKMODE pin is pulled up so
* we only have access to the left side SPK configs,
* but SPKOUTR isn't bridged so when playing back in
* stereo, we only get the left hand channel. The only
* option we're left with is to force the AIF into mono
* mode.
*/
switch (event) {
case SND_SOC_DAPM_POST_PMU:
ret = snd_soc_component_update_bits(component,
WM8994_AIF1_DAC1_FILTERS_1,
WM8994_AIF1DAC1_MONO, WM8994_AIF1DAC1_MONO);
break;
case SND_SOC_DAPM_PRE_PMD:
ret = snd_soc_component_update_bits(component,
WM8994_AIF1_DAC1_FILTERS_1,
WM8994_AIF1DAC1_MONO, 0);
break;
}
return ret;
}
static int aries_main_bias(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_card *card = w->dapm->card;
struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
int ret = 0;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
ret = regulator_enable(priv->reg_main_micbias);
break;
case SND_SOC_DAPM_POST_PMD:
ret = regulator_disable(priv->reg_main_micbias);
break;
}
return ret;
}
static int aries_headset_bias(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_card *card = w->dapm->card;
struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
int ret = 0;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
ret = regulator_enable(priv->reg_headset_micbias);
break;
case SND_SOC_DAPM_POST_PMD:
ret = regulator_disable(priv->reg_headset_micbias);
break;
}
return ret;
}
static const struct snd_kcontrol_new aries_controls[] = {
SOC_DAPM_PIN_SWITCH("Modem In"),
SOC_DAPM_PIN_SWITCH("Modem Out"),
};
static const struct snd_soc_dapm_widget aries_dapm_widgets[] = {
SND_SOC_DAPM_HP("HP", NULL),
SND_SOC_DAPM_SPK("SPK", aries_spk_cfg),
SND_SOC_DAPM_SPK("RCV", NULL),
SND_SOC_DAPM_LINE("LINE", NULL),
SND_SOC_DAPM_MIC("Main Mic", aries_main_bias),
SND_SOC_DAPM_MIC("Headset Mic", aries_headset_bias),
SND_SOC_DAPM_MIC("Bluetooth Mic", NULL),
SND_SOC_DAPM_SPK("Bluetooth SPK", NULL),
SND_SOC_DAPM_LINE("Modem In", NULL),
SND_SOC_DAPM_LINE("Modem Out", NULL),
/* This must be last as it is conditionally not used */
SND_SOC_DAPM_LINE("FM In", NULL),
};
static int aries_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);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
unsigned int pll_out;
int ret;
/* AIF1CLK should be >=3MHz for optimal performance */
if (params_width(params) == 24)
pll_out = params_rate(params) * 384;
else if (params_rate(params) == 8000 || params_rate(params) == 11025)
pll_out = params_rate(params) * 512;
else
pll_out = params_rate(params) * 256;
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
ARIES_MCLK1_FREQ, pll_out);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
pll_out, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
static int aries_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
int ret;
/* Switch sysclk to MCLK1 */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1,
ARIES_MCLK1_FREQ, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* Stop PLL */
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
ARIES_MCLK1_FREQ, 0);
if (ret < 0)
return ret;
return 0;
}
/*
* Main DAI operations
*/
static const struct snd_soc_ops aries_ops = {
.hw_params = aries_hw_params,
.hw_free = aries_hw_free,
};
static int aries_baseband_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
unsigned int pll_out;
int ret;
pll_out = 8000 * 512;
/* Set the codec FLL */
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL2, WM8994_FLL_SRC_MCLK1,
ARIES_MCLK1_FREQ, pll_out);
if (ret < 0)
return ret;
/* Set the codec system clock */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL2,
pll_out, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
static int aries_late_probe(struct snd_soc_card *card)
{
struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
int ret, irq;
ret = snd_soc_card_jack_new_pins(card, "Dock", SND_JACK_LINEOUT,
&aries_dock, dock_pins, ARRAY_SIZE(dock_pins));
if (ret)
return ret;
ret = devm_extcon_register_notifier(card->dev,
priv->usb_extcon, EXTCON_JACK_LINE_OUT,
&aries_extcon_notifier_block);
if (ret)
return ret;
if (extcon_get_state(priv->usb_extcon,
EXTCON_JACK_LINE_OUT) > 0)
snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT,
SND_JACK_LINEOUT);
else
snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT);
ret = snd_soc_card_jack_new_pins(card, "Headset",
SND_JACK_HEADSET | SND_JACK_BTN_0,
&aries_headset,
jack_pins, ARRAY_SIZE(jack_pins));
if (ret)
return ret;
ret = snd_soc_jack_add_zones(&aries_headset, ARRAY_SIZE(headset_zones),
headset_zones);
if (ret)
return ret;
irq = gpiod_to_irq(priv->gpio_headset_detect);
if (irq < 0) {
dev_err(card->dev, "Failed to map headset detect gpio to irq");
return -EINVAL;
}
ret = devm_request_threaded_irq(card->dev, irq, NULL,
headset_det_irq_thread,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
IRQF_ONESHOT, "headset_detect", priv);
if (ret) {
dev_err(card->dev, "Failed to request headset detect irq");
return ret;
}
headset_button_gpio[0].data = priv;
headset_button_gpio[0].desc = priv->gpio_headset_key;
snd_jack_set_key(aries_headset.jack, SND_JACK_BTN_0, KEY_MEDIA);
return snd_soc_jack_add_gpios(&aries_headset,
ARRAY_SIZE(headset_button_gpio), headset_button_gpio);
}
static const struct snd_soc_pcm_stream baseband_params = {
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.rate_min = 8000,
.rate_max = 8000,
.channels_min = 1,
.channels_max = 1,
};
static const struct snd_soc_pcm_stream bluetooth_params = {
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.rate_min = 8000,
.rate_max = 8000,
.channels_min = 1,
.channels_max = 2,
};
static const struct snd_soc_dapm_widget aries_modem_widgets[] = {
SND_SOC_DAPM_INPUT("Modem RX"),
SND_SOC_DAPM_OUTPUT("Modem TX"),
};
static const struct snd_soc_dapm_route aries_modem_routes[] = {
{ "Modem Capture", NULL, "Modem RX" },
{ "Modem TX", NULL, "Modem Playback" },
};
static const struct snd_soc_component_driver aries_component = {
.name = "aries-audio",
.dapm_widgets = aries_modem_widgets,
.num_dapm_widgets = ARRAY_SIZE(aries_modem_widgets),
.dapm_routes = aries_modem_routes,
.num_dapm_routes = ARRAY_SIZE(aries_modem_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static struct snd_soc_dai_driver aries_ext_dai[] = {
{
.name = "Voice call",
.playback = {
.stream_name = "Modem Playback",
.channels_min = 1,
.channels_max = 1,
.rate_min = 8000,
.rate_max = 8000,
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "Modem Capture",
.channels_min = 1,
.channels_max = 1,
.rate_min = 8000,
.rate_max = 8000,
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
SND_SOC_DAILINK_DEFS(aif1,
DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
SND_SOC_DAILINK_DEFS(baseband,
DAILINK_COMP_ARRAY(COMP_CPU("Voice call")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")));
SND_SOC_DAILINK_DEFS(bluetooth,
DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")));
static struct snd_soc_dai_link aries_dai[] = {
{
.name = "WM8994 AIF1",
.stream_name = "HiFi",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &aries_ops,
SND_SOC_DAILINK_REG(aif1),
},
{
.name = "WM8994 AIF2",
.stream_name = "Baseband",
.init = &aries_baseband_init,
.c2c_params = &baseband_params,
.num_c2c_params = 1,
.ignore_suspend = 1,
SND_SOC_DAILINK_REG(baseband),
},
{
.name = "WM8994 AIF3",
.stream_name = "Bluetooth",
.c2c_params = &bluetooth_params,
.num_c2c_params = 1,
.ignore_suspend = 1,
SND_SOC_DAILINK_REG(bluetooth),
},
};
static struct snd_soc_card aries_card = {
.name = "ARIES",
.owner = THIS_MODULE,
.dai_link = aries_dai,
.num_links = ARRAY_SIZE(aries_dai),
.controls = aries_controls,
.num_controls = ARRAY_SIZE(aries_controls),
.dapm_widgets = aries_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(aries_dapm_widgets),
.late_probe = aries_late_probe,
};
static const struct aries_wm8994_variant fascinate4g_variant = {
.modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_IB_NF,
.has_fm_radio = false,
};
static const struct aries_wm8994_variant aries_variant = {
.modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM
| SND_SOC_DAIFMT_IB_NF,
.has_fm_radio = true,
};
static const struct of_device_id samsung_wm8994_of_match[] = {
{
.compatible = "samsung,fascinate4g-wm8994",
.data = &fascinate4g_variant,
},
{
.compatible = "samsung,aries-wm8994",
.data = &aries_variant,
},
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
static int aries_audio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device_node *cpu, *codec, *extcon_np;
struct device *dev = &pdev->dev;
struct snd_soc_card *card = &aries_card;
struct aries_wm8994_data *priv;
struct snd_soc_dai_link *dai_link;
const struct of_device_id *match;
enum iio_chan_type channel_type;
int ret, i;
if (!np)
return -EINVAL;
card->dev = dev;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
snd_soc_card_set_drvdata(card, priv);
match = of_match_node(samsung_wm8994_of_match, np);
priv->variant = match->data;
/* Remove FM widget if not present */
if (!priv->variant->has_fm_radio)
card->num_dapm_widgets--;
priv->reg_main_micbias = devm_regulator_get(dev, "main-micbias");
if (IS_ERR(priv->reg_main_micbias)) {
dev_err(dev, "Failed to get main micbias regulator\n");
return PTR_ERR(priv->reg_main_micbias);
}
priv->reg_headset_micbias = devm_regulator_get(dev, "headset-micbias");
if (IS_ERR(priv->reg_headset_micbias)) {
dev_err(dev, "Failed to get headset micbias regulator\n");
return PTR_ERR(priv->reg_headset_micbias);
}
priv->gpio_earpath_sel = devm_gpiod_get(dev, "earpath-sel",
GPIOD_OUT_LOW);
if (IS_ERR(priv->gpio_earpath_sel)) {
dev_err(dev, "Failed to get earpath selector gpio");
return PTR_ERR(priv->gpio_earpath_sel);
}
extcon_np = of_parse_phandle(np, "extcon", 0);
priv->usb_extcon = extcon_find_edev_by_node(extcon_np);
of_node_put(extcon_np);
if (IS_ERR(priv->usb_extcon))
return dev_err_probe(dev, PTR_ERR(priv->usb_extcon),
"Failed to get extcon device");
priv->adc = devm_iio_channel_get(dev, "headset-detect");
if (IS_ERR(priv->adc))
return dev_err_probe(dev, PTR_ERR(priv->adc),
"Failed to get ADC channel");
ret = iio_get_channel_type(priv->adc, &channel_type);
if (ret)
return dev_err_probe(dev, ret,
"Failed to get ADC channel type");
if (channel_type != IIO_VOLTAGE)
return -EINVAL;
priv->gpio_headset_key = devm_gpiod_get(dev, "headset-key",
GPIOD_IN);
if (IS_ERR(priv->gpio_headset_key)) {
dev_err(dev, "Failed to get headset key gpio");
return PTR_ERR(priv->gpio_headset_key);
}
priv->gpio_headset_detect = devm_gpiod_get(dev,
"headset-detect", GPIOD_IN);
if (IS_ERR(priv->gpio_headset_detect)) {
dev_err(dev, "Failed to get headset detect gpio");
return PTR_ERR(priv->gpio_headset_detect);
}
/* Update card-name if provided through DT, else use default name */
snd_soc_of_parse_card_name(card, "model");
ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
if (ret < 0) {
/* Backwards compatible way */
ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
if (ret < 0) {
dev_err(dev, "Audio routing invalid/unspecified\n");
return ret;
}
}
aries_dai[1].dai_fmt = priv->variant->modem_dai_fmt;
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) {
ret = -EINVAL;
goto out;
}
for_each_card_prelinks(card, i, dai_link) {
dai_link->codecs->of_node = of_parse_phandle(codec,
"sound-dai", 0);
if (!dai_link->codecs->of_node) {
ret = -EINVAL;
goto out;
}
}
/* Set CPU and platform of_node for main DAI */
aries_dai[0].cpus->of_node = of_parse_phandle(cpu,
"sound-dai", 0);
if (!aries_dai[0].cpus->of_node) {
ret = -EINVAL;
goto out;
}
aries_dai[0].platforms->of_node = aries_dai[0].cpus->of_node;
/* Set CPU of_node for BT DAI */
aries_dai[2].cpus->of_node = of_parse_phandle(cpu,
"sound-dai", 1);
if (!aries_dai[2].cpus->of_node) {
ret = -EINVAL;
goto out;
}
ret = devm_snd_soc_register_component(dev, &aries_component,
aries_ext_dai, ARRAY_SIZE(aries_ext_dai));
if (ret < 0) {
dev_err(dev, "Failed to register component: %d\n", ret);
goto out;
}
ret = devm_snd_soc_register_card(dev, card);
if (ret)
dev_err(dev, "snd_soc_register_card() failed:%d\n", ret);
out:
of_node_put(cpu);
of_node_put(codec);
return ret;
}
static struct platform_driver aries_audio_driver = {
.driver = {
.name = "aries-audio-wm8994",
.of_match_table = of_match_ptr(samsung_wm8994_of_match),
.pm = &snd_soc_pm_ops,
},
.probe = aries_audio_probe,
};
module_platform_driver(aries_audio_driver);
MODULE_DESCRIPTION("ALSA SoC ARIES WM8994");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:aries-audio-wm8994");
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