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linux-7.2.3/sound/soc/samsung/Kconfig

@@ -0,0 +1,151 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig SND_SOC_SAMSUNG
+	tristate "Samsung"
+	depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
+	depends on COMMON_CLK
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for codecs attached to
+	  the Samsung SoCs' Audio interfaces. You will also need to
+	  select the audio interfaces to support below.
+
+if SND_SOC_SAMSUNG
+
+config SND_SAMSUNG_PCM
+	tristate "Samsung PCM interface support"
+
+config SND_SAMSUNG_SPDIF
+	tristate "Samsung SPDIF transmitter support"
+	select SND_SOC_SPDIF
+
+config SND_SAMSUNG_I2S
+	tristate "Samsung I2S interface support"
+
+config SND_SOC_SAMSUNG_SMDK_WM8994
+	tristate "SoC I2S Audio support for WM8994 on SMDK"
+	depends on I2C=y
+	select MFD_WM8994
+	select SND_SOC_WM8994
+	select SND_SAMSUNG_I2S
+	help
+		Say Y if you want to add support for SoC audio on the SMDKs.
+
+config SND_SOC_SAMSUNG_SMDK_SPDIF
+	tristate "SoC S/PDIF Audio support for SMDK"
+	select SND_SAMSUNG_SPDIF
+	help
+	  Say Y if you want to add support for SoC S/PDIF audio on the SMDK.
+
+config SND_SOC_SMDK_WM8994_PCM
+	tristate "SoC PCM Audio support for WM8994 on SMDK"
+	depends on I2C=y
+	select MFD_WM8994
+	select SND_SOC_WM8994
+	select SND_SAMSUNG_PCM
+	help
+	  Say Y if you want to add support for SoC audio on the SMDK
+
+config SND_SOC_SPEYSIDE
+	tristate "Audio support for Wolfson Speyside"
+	depends on I2C && SPI_MASTER
+	depends on MACH_WLF_CRAGG_6410 || COMPILE_TEST
+	select SND_SAMSUNG_I2S
+	select SND_SOC_WM8996
+	select SND_SOC_WM9081
+	select SND_SOC_WM0010
+	select SND_SOC_WM1250_EV1
+
+config SND_SOC_TOBERMORY
+	tristate "Audio support for Wolfson Tobermory"
+	depends on INPUT && I2C
+	depends on MACH_WLF_CRAGG_6410 || COMPILE_TEST
+	select SND_SAMSUNG_I2S
+	select SND_SOC_WM8962
+
+config SND_SOC_BELLS
+	tristate "Audio support for Wolfson Bells"
+	depends on MFD_ARIZONA && MFD_WM5102 && MFD_WM5110 && I2C && SPI_MASTER
+	depends on MACH_WLF_CRAGG_6410 || COMPILE_TEST
+	select SND_SAMSUNG_I2S
+	select SND_SOC_WM5102
+	select SND_SOC_WM5110
+	select SND_SOC_WM9081
+	select SND_SOC_WM0010
+	select SND_SOC_WM1250_EV1
+
+config SND_SOC_LOWLAND
+	tristate "Audio support for Wolfson Lowland"
+	depends on I2C
+	depends on MACH_WLF_CRAGG_6410 || COMPILE_TEST
+	select SND_SAMSUNG_I2S
+	select SND_SOC_WM5100
+	select SND_SOC_WM9081
+
+config SND_SOC_LITTLEMILL
+	tristate "Audio support for Wolfson Littlemill"
+	depends on I2C
+	depends on MACH_WLF_CRAGG_6410 || COMPILE_TEST
+	select SND_SAMSUNG_I2S
+	select MFD_WM8994
+	select SND_SOC_WM8994
+
+config SND_SOC_SNOW
+	tristate "Audio support for Google Snow boards"
+	depends on I2C
+	select SND_SOC_MAX98090
+	select SND_SOC_MAX98095
+	select SND_SAMSUNG_I2S
+	help
+	  Say Y if you want to add audio support for various Snow
+	  boards based on Exynos5 series of SoCs.
+
+config SND_SOC_ODROID
+	tristate "Audio support for Odroid XU3/XU4"
+	depends on SND_SOC_SAMSUNG && I2C
+	select SND_SOC_MAX98090
+	select SND_SAMSUNG_I2S
+	help
+	  Say Y here to enable audio support for the Odroid XU3/XU4.
+
+config SND_SOC_ARNDALE
+	tristate "Audio support for Arndale Board"
+	depends on I2C
+	select SND_SAMSUNG_I2S
+	select SND_SOC_RT5631
+	select MFD_WM8994
+	select SND_SOC_WM8994
+
+config SND_SOC_SAMSUNG_TM2_WM5110
+	tristate "SoC I2S Audio support for WM5110 on TM2 board"
+	depends on SND_SOC_SAMSUNG && MFD_ARIZONA && MFD_WM5110 && I2C && SPI_MASTER
+	depends on GPIOLIB || COMPILE_TEST
+	select SND_SOC_MAX98504
+	select SND_SOC_WM5110
+	select SND_SAMSUNG_I2S
+	help
+	  Say Y if you want to add support for SoC audio on the TM2 board.
+
+config SND_SOC_SAMSUNG_ARIES_WM8994
+	tristate "SoC I2S Audio support for WM8994 on Aries"
+	depends on SND_SOC_SAMSUNG && I2C && IIO && EXTCON
+	select SND_SOC_BT_SCO
+	select MFD_WM8994
+	select SND_SOC_WM8994
+	select SND_SAMSUNG_I2S
+	help
+	  Say Y if you want to add support for SoC audio on Aries boards,
+	  which has a WM8994 codec connected to a BT codec, a cellular
+	  modem, and the Samsung I2S controller.  Jack detection is done
+	  via ADC, GPIOs, and an extcon device.  Switching between the Mic
+	  and TV-Out path is also handled.
+
+config SND_SOC_SAMSUNG_MIDAS_WM1811
+	tristate "SoC I2S Audio support for Midas boards"
+	depends on SND_SOC_SAMSUNG && I2C && IIO
+	select SND_SAMSUNG_I2S
+	select MFD_WM8994
+	select SND_SOC_WM8994
+	help
+	  Say Y if you want to add support for SoC audio on the Midas boards.
+
+endif #SND_SOC_SAMSUNG

linux-7.2.3/sound/soc/samsung/Makefile

@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0
+# S3c24XX Platform Support
+snd-soc-s3c-dma-y := dmaengine.o
+snd-soc-idma-y := idma.o
+snd-soc-samsung-spdif-y := spdif.o
+snd-soc-pcm-y := pcm.o
+snd-soc-i2s-y := i2s.o
+
+obj-$(CONFIG_SND_SOC_SAMSUNG) += snd-soc-s3c-dma.o
+obj-$(CONFIG_SND_SAMSUNG_SPDIF) += snd-soc-samsung-spdif.o
+obj-$(CONFIG_SND_SAMSUNG_PCM) += snd-soc-pcm.o
+obj-$(CONFIG_SND_SAMSUNG_I2S) += snd-soc-i2s.o
+obj-$(CONFIG_SND_SAMSUNG_I2S) += snd-soc-idma.o
+
+# S3C24XX Machine Support
+snd-soc-smdk-wm8994-y := smdk_wm8994.o
+snd-soc-snow-y := snow.o
+snd-soc-smdk-spdif-y := smdk_spdif.o
+snd-soc-smdk-wm8994pcm-y := smdk_wm8994pcm.o
+snd-soc-speyside-y := speyside.o
+snd-soc-tobermory-y := tobermory.o
+snd-soc-lowland-y := lowland.o
+snd-soc-littlemill-y := littlemill.o
+snd-soc-bells-y := bells.o
+snd-soc-odroid-y := odroid.o
+snd-soc-arndale-y := arndale.o
+snd-soc-tm2-wm5110-y := tm2_wm5110.o
+snd-soc-aries-wm8994-y := aries_wm8994.o
+snd-soc-midas-wm1811-y := midas_wm1811.o
+
+obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994) += snd-soc-smdk-wm8994.o
+obj-$(CONFIG_SND_SOC_SNOW) += snd-soc-snow.o
+obj-$(CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF) += snd-soc-smdk-spdif.o
+obj-$(CONFIG_SND_SOC_SMDK_WM8994_PCM) += snd-soc-smdk-wm8994pcm.o
+obj-$(CONFIG_SND_SOC_SPEYSIDE) += snd-soc-speyside.o
+obj-$(CONFIG_SND_SOC_TOBERMORY) += snd-soc-tobermory.o
+obj-$(CONFIG_SND_SOC_LOWLAND) += snd-soc-lowland.o
+obj-$(CONFIG_SND_SOC_LITTLEMILL) += snd-soc-littlemill.o
+obj-$(CONFIG_SND_SOC_BELLS) += snd-soc-bells.o
+obj-$(CONFIG_SND_SOC_ODROID) += snd-soc-odroid.o
+obj-$(CONFIG_SND_SOC_ARNDALE) += snd-soc-arndale.o
+obj-$(CONFIG_SND_SOC_SAMSUNG_TM2_WM5110) += snd-soc-tm2-wm5110.o
+obj-$(CONFIG_SND_SOC_SAMSUNG_ARIES_WM8994) += snd-soc-aries-wm8994.o
+obj-$(CONFIG_SND_SOC_SAMSUNG_MIDAS_WM1811) += snd-soc-midas-wm1811.o

linux-7.2.3/sound/soc/samsung/aries_wm8994.c

@@ -0,0 +1,702 @@
+// 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 = snd_soc_dapm_to_card(w->dapm);
+	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 = snd_soc_dapm_to_card(w->dapm);
+	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 = snd_soc_dapm_to_card(w->dapm);
+	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_CBP_CFP,
+		.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_CBC_CFC
+		| 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_CBP_CFP
+		| 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");

linux-7.2.3/sound/soc/samsung/arndale.c

@@ -0,0 +1,217 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright (c) 2014, Insignal Co., Ltd.
+//
+//  Author: Claude <claude@insginal.co.kr>
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/wm8994.h"
+#include "i2s.h"
+
+static int arndale_rt5631_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	int rfs, ret;
+	unsigned long rclk;
+
+	rfs = 256;
+
+	rclk = params_rate(params) * rfs;
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
+					0, SND_SOC_CLOCK_OUT);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
+					0, SND_SOC_CLOCK_OUT);
+
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct snd_soc_ops arndale_rt5631_ops = {
+	.hw_params = arndale_rt5631_hw_params,
+};
+
+static int arndale_wm1811_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 rfs, rclk;
+
+	/* Ensure AIF1CLK is >= 3 MHz for optimal performance */
+	if (params_width(params) == 24)
+		rfs = 384;
+	else if (params_rate(params) == 8000 || params_rate(params) == 11025)
+		rfs = 512;
+	else
+		rfs = 256;
+
+	rclk = params_rate(params) * rfs;
+
+	/*
+	 * We add 1 to the frequency value to ensure proper EPLL setting
+	 * for each audio sampling rate (see epll_24mhz_tbl in drivers/clk/
+	 * samsung/clk-exynos5250.c for list of available EPLL rates).
+	 * The CODEC uses clk API and the value will be rounded hence the MCLK1
+	 * clock's frequency will still be exact multiple of the sample rate.
+	 */
+	return snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1,
+					rclk + 1, SND_SOC_CLOCK_IN);
+}
+
+static const struct snd_soc_ops arndale_wm1811_ops = {
+	.hw_params = arndale_wm1811_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(rt5631_hifi,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-aif1")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link arndale_rt5631_dai[] = {
+	{
+		.name = "RT5631 HiFi",
+		.stream_name = "Primary",
+		.dai_fmt = SND_SOC_DAIFMT_I2S
+			| SND_SOC_DAIFMT_NB_NF
+			| SND_SOC_DAIFMT_CBC_CFC,
+		.ops = &arndale_rt5631_ops,
+		SND_SOC_DAILINK_REG(rt5631_hifi),
+	},
+};
+
+SND_SOC_DAILINK_DEFS(wm1811_hifi,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link arndale_wm1811_dai[] = {
+	{
+		.name = "WM1811 HiFi",
+		.stream_name = "Primary",
+		.dai_fmt = SND_SOC_DAIFMT_I2S
+			| SND_SOC_DAIFMT_NB_NF
+			| SND_SOC_DAIFMT_CBP_CFP,
+		.ops = &arndale_wm1811_ops,
+		SND_SOC_DAILINK_REG(wm1811_hifi),
+	},
+};
+
+static struct snd_soc_card arndale_rt5631 = {
+	.name = "Arndale RT5631",
+	.owner = THIS_MODULE,
+	.dai_link = arndale_rt5631_dai,
+	.num_links = ARRAY_SIZE(arndale_rt5631_dai),
+};
+
+static struct snd_soc_card arndale_wm1811 = {
+	.name = "Arndale WM1811",
+	.owner = THIS_MODULE,
+	.dai_link = arndale_wm1811_dai,
+	.num_links = ARRAY_SIZE(arndale_wm1811_dai),
+};
+
+static void arndale_put_of_nodes(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *dai_link;
+	int i;
+
+	for_each_card_prelinks(card, i, dai_link) {
+		of_node_put(dai_link->cpus->of_node);
+		of_node_put(dai_link->codecs->of_node);
+	}
+}
+
+static int arndale_audio_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct snd_soc_card *card;
+	struct snd_soc_dai_link *dai_link;
+	int ret;
+
+	card = (struct snd_soc_card *)of_device_get_match_data(&pdev->dev);
+	card->dev = &pdev->dev;
+	dai_link = card->dai_link;
+
+	dai_link->cpus->of_node = of_parse_phandle(np, "samsung,audio-cpu", 0);
+	if (!dai_link->cpus->of_node) {
+		dev_err(&pdev->dev,
+			"Property 'samsung,audio-cpu' missing or invalid\n");
+		return -EINVAL;
+	}
+
+	if (!dai_link->platforms->name)
+		dai_link->platforms->of_node = dai_link->cpus->of_node;
+
+	dai_link->codecs->of_node = of_parse_phandle(np, "samsung,audio-codec", 0);
+	if (!dai_link->codecs->of_node) {
+		dev_err(&pdev->dev,
+			"Property 'samsung,audio-codec' missing or invalid\n");
+		ret = -EINVAL;
+		goto err_put_of_nodes;
+	}
+
+	ret = devm_snd_soc_register_card(card->dev, card);
+	if (ret) {
+		dev_err_probe(&pdev->dev, ret,
+			      "snd_soc_register_card() failed\n");
+		goto err_put_of_nodes;
+	}
+	return 0;
+
+err_put_of_nodes:
+	arndale_put_of_nodes(card);
+	return ret;
+}
+
+static void arndale_audio_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+	arndale_put_of_nodes(card);
+}
+
+static const struct of_device_id arndale_audio_of_match[] = {
+	{ .compatible = "samsung,arndale-rt5631",  .data = &arndale_rt5631 },
+	{ .compatible = "samsung,arndale-alc5631", .data = &arndale_rt5631 },
+	{ .compatible = "samsung,arndale-wm1811",  .data = &arndale_wm1811 },
+	{},
+};
+MODULE_DEVICE_TABLE(of, arndale_audio_of_match);
+
+static struct platform_driver arndale_audio_driver = {
+	.driver = {
+		.name = "arndale-audio",
+		.pm = &snd_soc_pm_ops,
+		.of_match_table = arndale_audio_of_match,
+	},
+	.probe = arndale_audio_probe,
+	.remove = arndale_audio_remove,
+};
+
+module_platform_driver(arndale_audio_driver);
+
+MODULE_AUTHOR("Claude <claude@insignal.co.kr>");
+MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");
+MODULE_LICENSE("GPL");

linux-7.2.3/sound/soc/samsung/bells.c

@@ -0,0 +1,497 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Bells audio support
+//
+// Copyright 2012 Wolfson Microelectronics
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/module.h>
+
+#include "../codecs/wm5102.h"
+#include "../codecs/wm9081.h"
+
+/* BCLK2 is fixed at this currently */
+#define BCLK2_RATE (64 * 8000)
+
+/*
+ * Expect a 24.576MHz crystal if one is fitted (the driver will function
+ * if this is not fitted).
+ */
+#define MCLK_RATE 24576000
+
+#define SYS_AUDIO_RATE 44100
+#define SYS_MCLK_RATE  (SYS_AUDIO_RATE * 512)
+
+#define DAI_AP_DSP    0
+#define DAI_DSP_CODEC 1
+#define DAI_CODEC_CP  2
+#define DAI_CODEC_SUB 3
+
+struct bells_drvdata {
+	int sysclk_rate;
+	int asyncclk_rate;
+};
+
+static struct bells_drvdata wm2200_drvdata = {
+	.sysclk_rate = 22579200,
+};
+
+static struct bells_drvdata wm5102_drvdata = {
+	.sysclk_rate = 45158400,
+	.asyncclk_rate = 49152000,
+};
+
+static struct bells_drvdata wm5110_drvdata = {
+	.sysclk_rate = 135475200,
+	.asyncclk_rate = 147456000,
+};
+
+static int bells_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;
+	struct snd_soc_dai *codec_dai;
+	struct snd_soc_component *component;
+	struct bells_drvdata *bells = card->drvdata;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_DSP_CODEC]);
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	component = codec_dai->component;
+
+	if (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_PREPARE:
+		if (snd_soc_dapm_get_bias_level(dapm) != SND_SOC_BIAS_STANDBY)
+			break;
+
+		ret = snd_soc_component_set_pll(component, WM5102_FLL1,
+					    ARIZONA_FLL_SRC_MCLK1,
+					    MCLK_RATE,
+					    bells->sysclk_rate);
+		if (ret < 0)
+			pr_err("Failed to start FLL: %d\n", ret);
+
+		if (bells->asyncclk_rate) {
+			ret = snd_soc_component_set_pll(component, WM5102_FLL2,
+						    ARIZONA_FLL_SRC_AIF2BCLK,
+						    BCLK2_RATE,
+						    bells->asyncclk_rate);
+			if (ret < 0)
+				pr_err("Failed to start FLL: %d\n", ret);
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int bells_set_bias_level_post(struct snd_soc_card *card,
+				     struct snd_soc_dapm_context *dapm,
+				     enum snd_soc_bias_level level)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *codec_dai;
+	struct snd_soc_component *component;
+	struct bells_drvdata *bells = card->drvdata;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_DSP_CODEC]);
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	component = codec_dai->component;
+
+	if (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_STANDBY:
+		ret = snd_soc_component_set_pll(component, WM5102_FLL1, 0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL: %d\n", ret);
+			return ret;
+		}
+
+		if (bells->asyncclk_rate) {
+			ret = snd_soc_component_set_pll(component, WM5102_FLL2,
+						    0, 0, 0);
+			if (ret < 0) {
+				pr_err("Failed to stop FLL: %d\n", ret);
+				return ret;
+			}
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int bells_late_probe(struct snd_soc_card *card)
+{
+	struct bells_drvdata *bells = card->drvdata;
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_component *wm0010;
+	struct snd_soc_component *component;
+	struct snd_soc_dai *aif1_dai;
+	struct snd_soc_dai *aif2_dai;
+	struct snd_soc_dai *aif3_dai;
+	struct snd_soc_dai *wm9081_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_AP_DSP]);
+	wm0010 = snd_soc_rtd_to_codec(rtd, 0)->component;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_DSP_CODEC]);
+	component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
+				       ARIZONA_CLK_SRC_FLL1,
+				       bells->sysclk_rate,
+				       SND_SOC_CLOCK_IN);
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to set SYSCLK: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_sysclk(wm0010, 0, 0, SYS_MCLK_RATE, 0);
+	if (ret != 0) {
+		dev_err(wm0010->dev, "Failed to set WM0010 clock: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
+	if (ret != 0)
+		dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
+
+	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_OPCLK, 0,
+				       SYS_MCLK_RATE, SND_SOC_CLOCK_OUT);
+	if (ret != 0)
+		dev_err(component->dev, "Failed to set OPCLK: %d\n", ret);
+
+	if (card->num_rtd == DAI_CODEC_CP)
+		return 0;
+
+	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_ASYNCCLK,
+				       ARIZONA_CLK_SRC_FLL2,
+				       bells->asyncclk_rate,
+				       SND_SOC_CLOCK_IN);
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to set ASYNCCLK: %d\n", ret);
+		return ret;
+	}
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_CODEC_CP]);
+	aif2_dai = snd_soc_rtd_to_cpu(rtd, 0);
+
+	ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
+	if (ret != 0) {
+		dev_err(aif2_dai->dev, "Failed to set AIF2 clock: %d\n", ret);
+		return ret;
+	}
+
+	if (card->num_rtd == DAI_CODEC_SUB)
+		return 0;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_CODEC_SUB]);
+	aif3_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	wm9081_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	ret = snd_soc_dai_set_sysclk(aif3_dai, ARIZONA_CLK_SYSCLK, 0, 0);
+	if (ret != 0) {
+		dev_err(aif1_dai->dev, "Failed to set AIF1 clock: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_sysclk(wm9081_dai->component, WM9081_SYSCLK_MCLK,
+				       0, SYS_MCLK_RATE, 0);
+	if (ret != 0) {
+		dev_err(wm9081_dai->dev, "Failed to set MCLK: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_pcm_stream baseband_params = {
+	.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	.rate_min = 8000,
+	.rate_max = 8000,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+static const struct snd_soc_pcm_stream sub_params = {
+	.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	.rate_min = SYS_AUDIO_RATE,
+	.rate_max = SYS_AUDIO_RATE,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+SND_SOC_DAILINK_DEFS(wm2200_cpu_dsp,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(wm2200_dsp_codec,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm2200.1-003a", "wm2200")));
+
+static struct snd_soc_dai_link bells_dai_wm2200[] = {
+	{
+		.name = "CPU-DSP",
+		.stream_name = "CPU-DSP",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		SND_SOC_DAILINK_REG(wm2200_cpu_dsp),
+	},
+	{
+		.name = "DSP-CODEC",
+		.stream_name = "DSP-CODEC",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.c2c_params = &sub_params,
+		.num_c2c_params = 1,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(wm2200_dsp_codec),
+	},
+};
+
+SND_SOC_DAILINK_DEFS(wm5102_cpu_dsp,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(wm5102_dsp_codec,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm5102-codec", "wm5102-aif1")));
+
+SND_SOC_DAILINK_DEFS(wm5102_baseband,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm5102-aif2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
+
+SND_SOC_DAILINK_DEFS(wm5102_sub,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm5102-aif3")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));
+
+static struct snd_soc_dai_link bells_dai_wm5102[] = {
+	{
+		.name = "CPU-DSP",
+		.stream_name = "CPU-DSP",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		SND_SOC_DAILINK_REG(wm5102_cpu_dsp),
+	},
+	{
+		.name = "DSP-CODEC",
+		.stream_name = "DSP-CODEC",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.c2c_params = &sub_params,
+		.num_c2c_params = 1,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(wm5102_dsp_codec),
+	},
+	{
+		.name = "Baseband",
+		.stream_name = "Baseband",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		.c2c_params = &baseband_params,
+		.num_c2c_params = 1,
+		SND_SOC_DAILINK_REG(wm5102_baseband),
+	},
+	{
+		.name = "Sub",
+		.stream_name = "Sub",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBC_CFC,
+		.ignore_suspend = 1,
+		.c2c_params = &sub_params,
+		.num_c2c_params = 1,
+		SND_SOC_DAILINK_REG(wm5102_sub),
+	},
+};
+
+SND_SOC_DAILINK_DEFS(wm5110_cpu_dsp,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(wm5110_dsp_codec,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm5110-codec", "wm5110-aif1")));
+
+SND_SOC_DAILINK_DEFS(wm5110_baseband,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm5110-aif2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
+
+
+SND_SOC_DAILINK_DEFS(wm5110_sub,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm5110-aif3")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));
+
+static struct snd_soc_dai_link bells_dai_wm5110[] = {
+	{
+		.name = "CPU-DSP",
+		.stream_name = "CPU-DSP",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		SND_SOC_DAILINK_REG(wm5110_cpu_dsp),
+	},
+	{
+		.name = "DSP-CODEC",
+		.stream_name = "DSP-CODEC",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.c2c_params = &sub_params,
+		.num_c2c_params = 1,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(wm5110_dsp_codec),
+	},
+	{
+		.name = "Baseband",
+		.stream_name = "Baseband",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		.c2c_params = &baseband_params,
+		.num_c2c_params = 1,
+		SND_SOC_DAILINK_REG(wm5110_baseband),
+	},
+	{
+		.name = "Sub",
+		.stream_name = "Sub",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBC_CFC,
+		.ignore_suspend = 1,
+		.c2c_params = &sub_params,
+		.num_c2c_params = 1,
+		SND_SOC_DAILINK_REG(wm5110_sub),
+	},
+};
+
+static struct snd_soc_codec_conf bells_codec_conf[] = {
+	{
+		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
+		.name_prefix = "Sub",
+	},
+};
+
+static const struct snd_soc_dapm_widget bells_widgets[] = {
+	SND_SOC_DAPM_MIC("DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route bells_routes[] = {
+	{ "Sub CLK_SYS", NULL, "OPCLK" },
+	{ "CLKIN", NULL, "OPCLK" },
+
+	{ "DMIC", NULL, "MICBIAS2" },
+	{ "IN2L", NULL, "DMIC" },
+	{ "IN2R", NULL, "DMIC" },
+};
+
+static struct snd_soc_card bells_cards[] = {
+	{
+		.name = "Bells WM2200",
+		.owner = THIS_MODULE,
+		.dai_link = bells_dai_wm2200,
+		.num_links = ARRAY_SIZE(bells_dai_wm2200),
+		.codec_conf = bells_codec_conf,
+		.num_configs = ARRAY_SIZE(bells_codec_conf),
+
+		.late_probe = bells_late_probe,
+
+		.dapm_widgets = bells_widgets,
+		.num_dapm_widgets = ARRAY_SIZE(bells_widgets),
+		.dapm_routes = bells_routes,
+		.num_dapm_routes = ARRAY_SIZE(bells_routes),
+
+		.set_bias_level = bells_set_bias_level,
+		.set_bias_level_post = bells_set_bias_level_post,
+
+		.drvdata = &wm2200_drvdata,
+	},
+	{
+		.name = "Bells WM5102",
+		.owner = THIS_MODULE,
+		.dai_link = bells_dai_wm5102,
+		.num_links = ARRAY_SIZE(bells_dai_wm5102),
+		.codec_conf = bells_codec_conf,
+		.num_configs = ARRAY_SIZE(bells_codec_conf),
+
+		.late_probe = bells_late_probe,
+
+		.dapm_widgets = bells_widgets,
+		.num_dapm_widgets = ARRAY_SIZE(bells_widgets),
+		.dapm_routes = bells_routes,
+		.num_dapm_routes = ARRAY_SIZE(bells_routes),
+
+		.set_bias_level = bells_set_bias_level,
+		.set_bias_level_post = bells_set_bias_level_post,
+
+		.drvdata = &wm5102_drvdata,
+	},
+	{
+		.name = "Bells WM5110",
+		.owner = THIS_MODULE,
+		.dai_link = bells_dai_wm5110,
+		.num_links = ARRAY_SIZE(bells_dai_wm5110),
+		.codec_conf = bells_codec_conf,
+		.num_configs = ARRAY_SIZE(bells_codec_conf),
+
+		.late_probe = bells_late_probe,
+
+		.dapm_widgets = bells_widgets,
+		.num_dapm_widgets = ARRAY_SIZE(bells_widgets),
+		.dapm_routes = bells_routes,
+		.num_dapm_routes = ARRAY_SIZE(bells_routes),
+
+		.set_bias_level = bells_set_bias_level,
+		.set_bias_level_post = bells_set_bias_level_post,
+
+		.drvdata = &wm5110_drvdata,
+	},
+};
+
+static int bells_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	bells_cards[pdev->id].dev = &pdev->dev;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, &bells_cards[pdev->id]);
+	if (ret)
+		dev_err(&pdev->dev,
+			"snd_soc_register_card(%s) failed: %d\n",
+			bells_cards[pdev->id].name, ret);
+
+	return ret;
+}
+
+static struct platform_driver bells_driver = {
+	.driver = {
+		.name = "bells",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = bells_probe,
+};
+
+module_platform_driver(bells_driver);
+
+MODULE_DESCRIPTION("Bells audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bells");

linux-7.2.3/sound/soc/samsung/dma.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * ALSA PCM interface for the Samsung SoC
+ */
+
+#ifndef _SAMSUNG_DMA_H
+#define _SAMSUNG_DMA_H
+
+#include <sound/dmaengine_pcm.h>
+
+/*
+ * @tx, @rx arguments can be NULL if the DMA channel names are "tx", "rx",
+ * otherwise actual DMA channel names must be passed to this function.
+ */
+int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
+				       const char *tx, const char *rx,
+				       struct device *dma_dev);
+#endif /* _SAMSUNG_DMA_H */

linux-7.2.3/sound/soc/samsung/dmaengine.c

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// dmaengine.c - Samsung dmaengine wrapper
+//
+// Author: Mark Brown <broonie@linaro.org>
+// Copyright 2013 Linaro
+
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/soc.h>
+
+#include "dma.h"
+
+int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
+				       const char *tx, const char *rx,
+				       struct device *dma_dev)
+{
+	struct snd_dmaengine_pcm_config *pcm_conf;
+
+	pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
+	if (!pcm_conf)
+		return -ENOMEM;
+
+	pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
+	pcm_conf->compat_filter_fn = filter;
+	pcm_conf->dma_dev = dma_dev;
+
+	pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
+	pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
+
+	return devm_snd_dmaengine_pcm_register(dev, pcm_conf,
+				SND_DMAENGINE_PCM_FLAG_COMPAT);
+}
+EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
+
+MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
+MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
+MODULE_LICENSE("GPL");

linux-7.2.3/sound/soc/samsung/i2s-regs.h

@@ -0,0 +1,158 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * Samsung I2S driver's register header
+ */
+
+#ifndef __SND_SOC_SAMSUNG_I2S_REGS_H
+#define __SND_SOC_SAMSUNG_I2S_REGS_H
+
+#define I2SCON		0x0
+#define I2SMOD		0x4
+#define I2SFIC		0x8
+#define I2SPSR		0xc
+#define I2STXD		0x10
+#define I2SRXD		0x14
+#define I2SFICS		0x18
+#define I2STXDS		0x1c
+#define I2SAHB		0x20
+#define I2SSTR0		0x24
+#define I2SSIZE		0x28
+#define I2STRNCNT	0x2c
+#define I2SLVL0ADDR	0x30
+#define I2SLVL1ADDR	0x34
+#define I2SLVL2ADDR	0x38
+#define I2SLVL3ADDR	0x3c
+#define I2SSTR1		0x40
+#define I2SVER		0x44
+#define I2SFIC1		0x48
+#define I2STDM		0x4c
+#define I2SFSTA		0x50
+
+#define CON_RSTCLR		(1 << 31)
+#define CON_FRXOFSTATUS		(1 << 26)
+#define CON_FRXORINTEN		(1 << 25)
+#define CON_FTXSURSTAT		(1 << 24)
+#define CON_FTXSURINTEN		(1 << 23)
+#define CON_TXSDMA_PAUSE	(1 << 20)
+#define CON_TXSDMA_ACTIVE	(1 << 18)
+
+#define CON_FTXURSTATUS		(1 << 17)
+#define CON_FTXURINTEN		(1 << 16)
+#define CON_TXFIFO2_EMPTY	(1 << 15)
+#define CON_TXFIFO1_EMPTY	(1 << 14)
+#define CON_TXFIFO2_FULL	(1 << 13)
+#define CON_TXFIFO1_FULL	(1 << 12)
+
+#define CON_LRINDEX		(1 << 11)
+#define CON_TXFIFO_EMPTY	(1 << 10)
+#define CON_RXFIFO_EMPTY	(1 << 9)
+#define CON_TXFIFO_FULL		(1 << 8)
+#define CON_RXFIFO_FULL		(1 << 7)
+#define CON_TXDMA_PAUSE		(1 << 6)
+#define CON_RXDMA_PAUSE		(1 << 5)
+#define CON_TXCH_PAUSE		(1 << 4)
+#define CON_RXCH_PAUSE		(1 << 3)
+#define CON_TXDMA_ACTIVE	(1 << 2)
+#define CON_RXDMA_ACTIVE	(1 << 1)
+#define CON_ACTIVE		(1 << 0)
+
+#define MOD_OPCLK_SHIFT		30
+#define MOD_OPCLK_CDCLK_OUT	(0 << MOD_OPCLK_SHIFT)
+#define MOD_OPCLK_CDCLK_IN	(1 << MOD_OPCLK_SHIFT)
+#define MOD_OPCLK_BCLK_OUT	(2 << MOD_OPCLK_SHIFT)
+#define MOD_OPCLK_PCLK		(3 << MOD_OPCLK_SHIFT)
+#define MOD_OPCLK_MASK		(3 << MOD_OPCLK_SHIFT)
+#define MOD_TXS_IDMA		(1 << 28) /* Sec_TXFIFO use I-DMA */
+
+#define MOD_BLCS_SHIFT		26
+#define MOD_BLCS_16BIT		(0 << MOD_BLCS_SHIFT)
+#define MOD_BLCS_8BIT		(1 << MOD_BLCS_SHIFT)
+#define MOD_BLCS_24BIT		(2 << MOD_BLCS_SHIFT)
+#define MOD_BLCS_MASK		(3 << MOD_BLCS_SHIFT)
+#define MOD_BLCP_SHIFT		24
+#define MOD_BLCP_16BIT		(0 << MOD_BLCP_SHIFT)
+#define MOD_BLCP_8BIT		(1 << MOD_BLCP_SHIFT)
+#define MOD_BLCP_24BIT		(2 << MOD_BLCP_SHIFT)
+#define MOD_BLCP_MASK		(3 << MOD_BLCP_SHIFT)
+
+#define MOD_C2DD_HHALF		(1 << 21) /* Discard Higher-half */
+#define MOD_C2DD_LHALF		(1 << 20) /* Discard Lower-half */
+#define MOD_C1DD_HHALF		(1 << 19)
+#define MOD_C1DD_LHALF		(1 << 18)
+#define MOD_DC2_EN		(1 << 17)
+#define MOD_DC1_EN		(1 << 16)
+#define MOD_BLC_16BIT		(0 << 13)
+#define MOD_BLC_8BIT		(1 << 13)
+#define MOD_BLC_24BIT		(2 << 13)
+#define MOD_BLC_MASK		(3 << 13)
+
+#define MOD_TXONLY		(0 << 8)
+#define MOD_RXONLY		(1 << 8)
+#define MOD_TXRX		(2 << 8)
+#define MOD_MASK		(3 << 8)
+#define MOD_LRP_SHIFT		7
+#define MOD_LR_LLOW		0
+#define MOD_LR_RLOW		1
+#define MOD_SDF_SHIFT		5
+#define MOD_SDF_IIS		0
+#define MOD_SDF_MSB		1
+#define MOD_SDF_LSB		2
+#define MOD_SDF_MASK		3
+#define MOD_RCLK_SHIFT		3
+#define MOD_RCLK_256FS		0
+#define MOD_RCLK_512FS		1
+#define MOD_RCLK_384FS		2
+#define MOD_RCLK_768FS		3
+#define MOD_RCLK_MASK		3
+#define MOD_BCLK_SHIFT		1
+#define MOD_BCLK_32FS		0
+#define MOD_BCLK_48FS		1
+#define MOD_BCLK_16FS		2
+#define MOD_BCLK_24FS		3
+#define MOD_BCLK_MASK		3
+#define MOD_8BIT		(1 << 0)
+
+#define EXYNOS5420_MOD_LRP_SHIFT	15
+#define EXYNOS5420_MOD_SDF_SHIFT	6
+#define EXYNOS5420_MOD_RCLK_SHIFT	4
+#define EXYNOS5420_MOD_BCLK_SHIFT	0
+#define EXYNOS5420_MOD_BCLK_64FS	4
+#define EXYNOS5420_MOD_BCLK_96FS	5
+#define EXYNOS5420_MOD_BCLK_128FS	6
+#define EXYNOS5420_MOD_BCLK_192FS	7
+#define EXYNOS5420_MOD_BCLK_256FS	8
+#define EXYNOS5420_MOD_BCLK_MASK	0xf
+
+#define EXYNOS7_MOD_RCLK_64FS	4
+#define EXYNOS7_MOD_RCLK_128FS	5
+#define EXYNOS7_MOD_RCLK_96FS	6
+#define EXYNOS7_MOD_RCLK_192FS	7
+
+#define PSR_PSREN		(1 << 15)
+#define PSR_PSVAL(x)		((((x) - 1) << 8) & 0x3f00)
+
+#define FIC_TX2COUNT(x)		(((x) >>  24) & 0xf)
+#define FIC_TX1COUNT(x)		(((x) >>  16) & 0xf)
+
+#define FIC_TXFLUSH		(1 << 15)
+#define FIC_RXFLUSH		(1 << 7)
+
+#define FIC_TXCOUNT(x)		(((x) >>  8) & 0xf)
+#define FIC_RXCOUNT(x)		(((x) >>  0) & 0xf)
+#define FICS_TXCOUNT(x)		(((x) >>  8) & 0x7f)
+
+#define AHB_INTENLVL0		(1 << 24)
+#define AHB_LVL0INT		(1 << 20)
+#define AHB_CLRLVL0INT		(1 << 16)
+#define AHB_DMARLD		(1 << 5)
+#define AHB_INTMASK		(1 << 3)
+#define AHB_DMAEN		(1 << 0)
+#define AHB_LVLINTMASK		(0xf << 20)
+
+#define I2SSIZE_TRNMSK		(0xffff)
+#define I2SSIZE_SHIFT		(16)
+
+#endif /* __SND_SOC_SAMSUNG_I2S_REGS_H */

linux-7.2.3/sound/soc/samsung/i2s.h

@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ALSA SoC Audio Layer - Samsung I2S Controller driver
+ *
+ * Copyright (c) 2010 Samsung Electronics Co. Ltd.
+ *	Jaswinder Singh <jassisinghbrar@gmail.com>
+ */
+
+#ifndef __SND_SOC_SAMSUNG_I2S_H
+#define __SND_SOC_SAMSUNG_I2S_H
+
+#define SAMSUNG_I2S_DAI        "samsung-i2s"
+#define SAMSUNG_I2S_DAI_SEC    "samsung-i2s-sec"
+
+#define SAMSUNG_I2S_DIV_BCLK		1
+
+#define SAMSUNG_I2S_RCLKSRC_0		0
+#define SAMSUNG_I2S_RCLKSRC_1		1
+#define SAMSUNG_I2S_CDCLK		2
+/* Operation clock for IIS logic */
+#define SAMSUNG_I2S_OPCLK		3
+#define  SAMSUNG_I2S_OPCLK_CDCLK_OUT	0	/* CODEC clock out */
+#define  SAMSUNG_I2S_OPCLK_CDCLK_IN	1	/* CODEC clock in */
+#define  SAMSUNG_I2S_OPCLK_BCLK_OUT	2	/* Bit clock out */
+#define  SAMSUNG_I2S_OPCLK_PCLK		3	/* Audio bus clock */
+
+#endif /* __SND_SOC_SAMSUNG_I2S_H */

linux-7.2.3/sound/soc/samsung/idma.c

@@ -0,0 +1,420 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// idma.c - I2S0 internal DMA driver
+//
+// Copyright (c) 2011 Samsung Electronics Co., Ltd.
+//		http://www.samsung.com
+
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "i2s.h"
+#include "idma.h"
+#include "i2s-regs.h"
+
+#define ST_RUNNING		(1<<0)
+#define ST_OPENED		(1<<1)
+
+static const struct snd_pcm_hardware idma_hardware = {
+	.info = SNDRV_PCM_INFO_INTERLEAVED |
+		    SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		    SNDRV_PCM_INFO_MMAP |
+		    SNDRV_PCM_INFO_MMAP_VALID |
+		    SNDRV_PCM_INFO_PAUSE |
+		    SNDRV_PCM_INFO_RESUME,
+	.buffer_bytes_max = MAX_IDMA_BUFFER,
+	.period_bytes_min = 128,
+	.period_bytes_max = MAX_IDMA_PERIOD,
+	.periods_min = 1,
+	.periods_max = 2,
+};
+
+struct idma_ctrl {
+	spinlock_t	lock;
+	int		state;
+	dma_addr_t	start;
+	dma_addr_t	pos;
+	dma_addr_t	end;
+	dma_addr_t	period;
+	dma_addr_t	periodsz;
+	void		*token;
+	void		(*cb)(void *dt, int bytes_xfer);
+};
+
+static struct idma_info {
+	spinlock_t	lock;
+	void		 __iomem  *regs;
+	dma_addr_t	lp_tx_addr;
+} idma;
+
+static int idma_irq;
+
+static void idma_getpos(dma_addr_t *src)
+{
+	*src = idma.lp_tx_addr +
+		(readl(idma.regs + I2STRNCNT) & 0xffffff) * 4;
+}
+
+static int idma_enqueue(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct idma_ctrl *prtd = substream->runtime->private_data;
+	u32 val;
+
+	scoped_guard(spinlock, &prtd->lock)
+		prtd->token = (void *) substream;
+
+	/* Internal DMA Level0 Interrupt Address */
+	val = idma.lp_tx_addr + prtd->periodsz;
+	writel(val, idma.regs + I2SLVL0ADDR);
+
+	/* Start address0 of I2S internal DMA operation. */
+	val = idma.lp_tx_addr;
+	writel(val, idma.regs + I2SSTR0);
+
+	/*
+	 * Transfer block size for I2S internal DMA.
+	 * Should decide transfer size before start dma operation
+	 */
+	val = readl(idma.regs + I2SSIZE);
+	val &= ~(I2SSIZE_TRNMSK << I2SSIZE_SHIFT);
+	val |= (((runtime->dma_bytes >> 2) &
+			I2SSIZE_TRNMSK) << I2SSIZE_SHIFT);
+	writel(val, idma.regs + I2SSIZE);
+
+	val = readl(idma.regs + I2SAHB);
+	val |= AHB_INTENLVL0;
+	writel(val, idma.regs + I2SAHB);
+
+	return 0;
+}
+
+static void idma_setcallbk(struct snd_pcm_substream *substream,
+				void (*cb)(void *, int))
+{
+	struct idma_ctrl *prtd = substream->runtime->private_data;
+
+	guard(spinlock)(&prtd->lock);
+	prtd->cb = cb;
+}
+
+static void idma_control(int op)
+{
+	u32 val = readl(idma.regs + I2SAHB);
+
+	guard(spinlock)(&idma.lock);
+
+	switch (op) {
+	case LPAM_DMA_START:
+		val |= (AHB_INTENLVL0 | AHB_DMAEN);
+		break;
+	case LPAM_DMA_STOP:
+		val &= ~(AHB_INTENLVL0 | AHB_DMAEN);
+		break;
+	default:
+		return;
+	}
+
+	writel(val, idma.regs + I2SAHB);
+}
+
+static void idma_done(void *id, int bytes_xfer)
+{
+	struct snd_pcm_substream *substream = id;
+	struct idma_ctrl *prtd = substream->runtime->private_data;
+
+	if (prtd && (prtd->state & ST_RUNNING))
+		snd_pcm_period_elapsed(substream);
+}
+
+static int idma_hw_params(struct snd_soc_component *component,
+			  struct snd_pcm_substream *substream,
+			  struct snd_pcm_hw_params *params)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct idma_ctrl *prtd = substream->runtime->private_data;
+	u32 mod = readl(idma.regs + I2SMOD);
+	u32 ahb = readl(idma.regs + I2SAHB);
+
+	ahb |= (AHB_DMARLD | AHB_INTMASK);
+	mod |= MOD_TXS_IDMA;
+	writel(ahb, idma.regs + I2SAHB);
+	writel(mod, idma.regs + I2SMOD);
+
+	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
+	runtime->dma_bytes = params_buffer_bytes(params);
+
+	prtd->start = prtd->pos = runtime->dma_addr;
+	prtd->period = params_periods(params);
+	prtd->periodsz = params_period_bytes(params);
+	prtd->end = runtime->dma_addr + runtime->dma_bytes;
+
+	idma_setcallbk(substream, idma_done);
+
+	return 0;
+}
+
+static int idma_hw_free(struct snd_soc_component *component,
+			struct snd_pcm_substream *substream)
+{
+	snd_pcm_set_runtime_buffer(substream, NULL);
+
+	return 0;
+}
+
+static int idma_prepare(struct snd_soc_component *component,
+			struct snd_pcm_substream *substream)
+{
+	struct idma_ctrl *prtd = substream->runtime->private_data;
+
+	prtd->pos = prtd->start;
+
+	/* flush the DMA channel */
+	idma_control(LPAM_DMA_STOP);
+	idma_enqueue(substream);
+
+	return 0;
+}
+
+static int idma_trigger(struct snd_soc_component *component,
+			struct snd_pcm_substream *substream, int cmd)
+{
+	struct idma_ctrl *prtd = substream->runtime->private_data;
+	int ret = 0;
+
+	guard(spinlock)(&prtd->lock);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		prtd->state |= ST_RUNNING;
+		idma_control(LPAM_DMA_START);
+		break;
+
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		prtd->state &= ~ST_RUNNING;
+		idma_control(LPAM_DMA_STOP);
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static snd_pcm_uframes_t
+idma_pointer(struct snd_soc_component *component,
+	     struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct idma_ctrl *prtd = runtime->private_data;
+	dma_addr_t src;
+	unsigned long res;
+
+	scoped_guard(spinlock, &prtd->lock) {
+		idma_getpos(&src);
+		res = src - prtd->start;
+	}
+
+	return bytes_to_frames(substream->runtime, res);
+}
+
+static int idma_mmap(struct snd_soc_component *component,
+		     struct snd_pcm_substream *substream,
+	struct vm_area_struct *vma)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned long size, offset;
+
+	/* From snd_pcm_lib_mmap_iomem */
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+	size = vma->vm_end - vma->vm_start;
+	offset = vma->vm_pgoff << PAGE_SHIFT;
+	return io_remap_pfn_range(vma, vma->vm_start,
+			(runtime->dma_addr + offset) >> PAGE_SHIFT,
+			size, vma->vm_page_prot);
+}
+
+static irqreturn_t iis_irq(int irqno, void *dev_id)
+{
+	struct idma_ctrl *prtd = (struct idma_ctrl *)dev_id;
+	u32 iisahb, val, addr;
+
+	iisahb  = readl(idma.regs + I2SAHB);
+
+	val = (iisahb & AHB_LVL0INT) ? AHB_CLRLVL0INT : 0;
+
+	if (val) {
+		iisahb |= val;
+		writel(iisahb, idma.regs + I2SAHB);
+
+		addr = readl(idma.regs + I2SLVL0ADDR) - idma.lp_tx_addr;
+		addr += prtd->periodsz;
+		addr %= (u32)(prtd->end - prtd->start);
+		addr += idma.lp_tx_addr;
+
+		writel(addr, idma.regs + I2SLVL0ADDR);
+
+		if (prtd->cb)
+			prtd->cb(prtd->token, prtd->period);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int idma_open(struct snd_soc_component *component,
+		     struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct idma_ctrl *prtd;
+	int ret;
+
+	snd_soc_set_runtime_hwparams(substream, &idma_hardware);
+
+	prtd = kzalloc_obj(struct idma_ctrl);
+	if (prtd == NULL)
+		return -ENOMEM;
+
+	ret = request_irq(idma_irq, iis_irq, 0, "i2s", prtd);
+	if (ret < 0) {
+		pr_err("fail to claim i2s irq , ret = %d\n", ret);
+		kfree(prtd);
+		return ret;
+	}
+
+	spin_lock_init(&prtd->lock);
+
+	runtime->private_data = prtd;
+
+	return 0;
+}
+
+static int idma_close(struct snd_soc_component *component,
+		      struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct idma_ctrl *prtd = runtime->private_data;
+
+	free_irq(idma_irq, prtd);
+
+	if (!prtd)
+		pr_err("idma_close called with prtd == NULL\n");
+
+	kfree(prtd);
+
+	return 0;
+}
+
+static void idma_free(struct snd_soc_component *component,
+		      struct snd_pcm *pcm)
+{
+	struct snd_pcm_substream *substream;
+	struct snd_dma_buffer *buf;
+
+	substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+	if (!substream)
+		return;
+
+	buf = &substream->dma_buffer;
+	if (!buf->area)
+		return;
+
+	iounmap((void __iomem *)buf->area);
+
+	buf->area = NULL;
+	buf->addr = 0;
+}
+
+static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream)
+{
+	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+	struct snd_dma_buffer *buf = &substream->dma_buffer;
+
+	buf->dev.dev = pcm->card->dev;
+	buf->private_data = NULL;
+
+	/* Assign PCM buffer pointers */
+	buf->dev.type = SNDRV_DMA_TYPE_CONTINUOUS;
+	buf->addr = idma.lp_tx_addr;
+	buf->bytes = idma_hardware.buffer_bytes_max;
+	buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes);
+	if (!buf->area)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int idma_new(struct snd_soc_component *component,
+		    struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_card *card = rtd->card->snd_card;
+	struct snd_pcm *pcm = rtd->pcm;
+	int ret;
+
+	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
+		ret = preallocate_idma_buffer(pcm,
+				SNDRV_PCM_STREAM_PLAYBACK);
+	}
+
+	return ret;
+}
+
+void idma_reg_addr_init(void __iomem *regs, dma_addr_t addr)
+{
+	spin_lock_init(&idma.lock);
+	idma.regs = regs;
+	idma.lp_tx_addr = addr;
+}
+EXPORT_SYMBOL_GPL(idma_reg_addr_init);
+
+static const struct snd_soc_component_driver asoc_idma_platform = {
+	.open		= idma_open,
+	.close		= idma_close,
+	.trigger	= idma_trigger,
+	.pointer	= idma_pointer,
+	.mmap		= idma_mmap,
+	.hw_params	= idma_hw_params,
+	.hw_free	= idma_hw_free,
+	.prepare	= idma_prepare,
+	.pcm_new	= idma_new,
+	.pcm_free	= idma_free,
+};
+
+static int asoc_idma_platform_probe(struct platform_device *pdev)
+{
+	idma_irq = platform_get_irq(pdev, 0);
+	if (idma_irq < 0)
+		return idma_irq;
+
+	return devm_snd_soc_register_component(&pdev->dev, &asoc_idma_platform,
+					       NULL, 0);
+}
+
+static struct platform_driver asoc_idma_driver = {
+	.driver = {
+		.name = "samsung-idma",
+	},
+
+	.probe = asoc_idma_platform_probe,
+};
+
+module_platform_driver(asoc_idma_driver);
+
+MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
+MODULE_DESCRIPTION("Samsung ASoC IDMA Driver");
+MODULE_LICENSE("GPL");

linux-7.2.3/sound/soc/samsung/idma.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd
+ *		http://www.samsung.com
+ */
+
+#ifndef __SND_SOC_SAMSUNG_IDMA_H_
+#define __SND_SOC_SAMSUNG_IDMA_H_
+
+extern void idma_reg_addr_init(void __iomem *regs, dma_addr_t addr);
+
+/* dma_state */
+#define LPAM_DMA_STOP	0
+#define LPAM_DMA_START	1
+
+#define MAX_IDMA_PERIOD (128 * 1024)
+#define MAX_IDMA_BUFFER (160 * 1024)
+
+#endif /* __SND_SOC_SAMSUNG_IDMA_H_ */

linux-7.2.3/sound/soc/samsung/littlemill.c

@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Littlemill audio support
+//
+// Copyright 2011 Wolfson Microelectronics
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/module.h>
+
+#include "../codecs/wm8994.h"
+
+static int sample_rate = 44100;
+
+static int littlemill_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;
+	struct snd_soc_dai *aif1_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	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_PREPARE:
+		/*
+		 * If we've not already clocked things via hw_params()
+		 * then do so now, otherwise these are noops.
+		 */
+		if (snd_soc_dapm_get_bias_level(dapm) == SND_SOC_BIAS_STANDBY) {
+			ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
+						  WM8994_FLL_SRC_MCLK2, 32768,
+						  sample_rate * 512);
+			if (ret < 0) {
+				pr_err("Failed to start FLL: %d\n", ret);
+				return ret;
+			}
+
+			ret = snd_soc_dai_set_sysclk(aif1_dai,
+						     WM8994_SYSCLK_FLL1,
+						     sample_rate * 512,
+						     SND_SOC_CLOCK_IN);
+			if (ret < 0) {
+				pr_err("Failed to set SYSCLK: %d\n", ret);
+				return ret;
+			}
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int littlemill_set_bias_level_post(struct snd_soc_card *card,
+					       struct snd_soc_dapm_context *dapm,
+					       enum snd_soc_bias_level level)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *aif1_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	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:
+		ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
+					     32768, SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			pr_err("Failed to switch away from FLL1: %d\n", ret);
+			return ret;
+		}
+
+		ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
+					  0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL1: %d\n", ret);
+			return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int littlemill_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);
+	int ret;
+
+	sample_rate = params_rate(params);
+
+	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
+				  WM8994_FLL_SRC_MCLK2, 32768,
+				  sample_rate * 512);
+	if (ret < 0) {
+		pr_err("Failed to start FLL: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_sysclk(codec_dai,
+				     WM8994_SYSCLK_FLL1,
+				     sample_rate * 512,
+				     SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		pr_err("Failed to set SYSCLK: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_ops littlemill_ops = {
+	.hw_params = littlemill_hw_params,
+};
+
+static const struct snd_soc_pcm_stream baseband_params = {
+	.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	.rate_min = 8000,
+	.rate_max = 8000,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+SND_SOC_DAILINK_DEFS(cpu,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(baseband,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm8994-aif2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027",
+				      "wm1250-ev1")));
+
+static struct snd_soc_dai_link littlemill_dai[] = {
+	{
+		.name = "CPU",
+		.stream_name = "CPU",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.ops = &littlemill_ops,
+		SND_SOC_DAILINK_REG(cpu),
+	},
+	{
+		.name = "Baseband",
+		.stream_name = "Baseband",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		.c2c_params = &baseband_params,
+		.num_c2c_params = 1,
+		SND_SOC_DAILINK_REG(baseband),
+	},
+};
+
+static int bbclk_ev(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 snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *aif2_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
+	aif2_dai = snd_soc_rtd_to_cpu(rtd, 0);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
+					  WM8994_FLL_SRC_BCLK, 64 * 8000,
+					  8000 * 256);
+		if (ret < 0) {
+			pr_err("Failed to start FLL: %d\n", ret);
+			return ret;
+		}
+
+		ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2,
+					     8000 * 256,
+					     SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			pr_err("Failed to set SYSCLK: %d\n", ret);
+			return ret;
+		}
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
+					     32768, SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			pr_err("Failed to switch away from FLL2: %d\n", ret);
+			return ret;
+		}
+
+		ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
+					  0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL2: %d\n", ret);
+			return ret;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
+};
+
+static const struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_HP("Headset Mic", NULL),
+
+	SND_SOC_DAPM_MIC("AMIC", NULL),
+	SND_SOC_DAPM_MIC("DMIC", NULL),
+
+	SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0,
+			      bbclk_ev,
+			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+	{ "Headphone", NULL, "HPOUT1L" },
+	{ "Headphone", NULL, "HPOUT1R" },
+
+	{ "AMIC", NULL, "MICBIAS1" },   /* Default for AMICBIAS jumper */
+	{ "IN1LN", NULL, "AMIC" },
+
+	{ "DMIC", NULL, "MICBIAS2" },   /* Default for DMICBIAS jumper */
+	{ "DMIC1DAT", NULL, "DMIC" },
+	{ "DMIC2DAT", NULL, "DMIC" },
+
+	{ "AIF2CLK", NULL, "Baseband Clock" },
+};
+
+static struct snd_soc_jack littlemill_headset;
+static struct snd_soc_jack_pin littlemill_headset_pins[] = {
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static int littlemill_late_probe(struct snd_soc_card *card)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_component *component;
+	struct snd_soc_dai *aif1_dai;
+	struct snd_soc_dai *aif2_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
+	aif2_dai = snd_soc_rtd_to_cpu(rtd, 0);
+
+	ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
+				     32768, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
+				     32768, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	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,
+					 &littlemill_headset,
+					 littlemill_headset_pins,
+					 ARRAY_SIZE(littlemill_headset_pins));
+	if (ret)
+		return ret;
+
+	/* This will check device compatibility itself */
+	wm8958_mic_detect(component, &littlemill_headset, NULL, NULL, NULL, NULL);
+
+	/* As will this */
+	wm8994_mic_detect(component, &littlemill_headset, 1);
+
+	return 0;
+}
+
+static struct snd_soc_card littlemill = {
+	.name = "Littlemill",
+	.owner = THIS_MODULE,
+	.dai_link = littlemill_dai,
+	.num_links = ARRAY_SIZE(littlemill_dai),
+
+	.set_bias_level = littlemill_set_bias_level,
+	.set_bias_level_post = littlemill_set_bias_level_post,
+
+	.controls = controls,
+	.num_controls = ARRAY_SIZE(controls),
+	.dapm_widgets = widgets,
+	.num_dapm_widgets = ARRAY_SIZE(widgets),
+	.dapm_routes = audio_paths,
+	.num_dapm_routes = ARRAY_SIZE(audio_paths),
+
+	.late_probe = littlemill_late_probe,
+};
+
+static int littlemill_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &littlemill;
+	int ret;
+
+	card->dev = &pdev->dev;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret)
+		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
+
+	return ret;
+}
+
+static struct platform_driver littlemill_driver = {
+	.driver = {
+		.name = "littlemill",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = littlemill_probe,
+};
+
+module_platform_driver(littlemill_driver);
+
+MODULE_DESCRIPTION("Littlemill audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:littlemill");

linux-7.2.3/sound/soc/samsung/lowland.c

@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Lowland audio support
+//
+// Copyright 2011 Wolfson Microelectronics
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/module.h>
+
+#include "../codecs/wm5100.h"
+#include "../codecs/wm9081.h"
+
+#define MCLK1_RATE (44100 * 512)
+#define CLKOUT_RATE (44100 * 256)
+
+static struct snd_soc_jack lowland_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin lowland_headset_pins[] = {
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+	{
+		.pin = "Line Out",
+		.mask = SND_JACK_LINEOUT,
+	},
+};
+
+static int lowland_wm5100_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	int ret;
+
+	ret = snd_soc_component_set_sysclk(component, WM5100_CLK_SYSCLK,
+				       WM5100_CLKSRC_MCLK1, MCLK1_RATE,
+				       SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		pr_err("Failed to set SYSCLK clock source: %d\n", ret);
+		return ret;
+	}
+
+	/* Clock OPCLK, used by the other audio components. */
+	ret = snd_soc_component_set_sysclk(component, WM5100_CLK_OPCLK, 0,
+				       CLKOUT_RATE, 0);
+	if (ret < 0) {
+		pr_err("Failed to set OPCLK rate: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
+					 SND_JACK_LINEOUT | SND_JACK_HEADSET |
+					 SND_JACK_BTN_0,
+					 &lowland_headset, lowland_headset_pins,
+					 ARRAY_SIZE(lowland_headset_pins));
+	if (ret)
+		return ret;
+
+	wm5100_detect(component, &lowland_headset);
+
+	return 0;
+}
+
+static int lowland_wm9081_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(rtd->card);
+
+	snd_soc_dapm_disable_pin(dapm, "LINEOUT");
+
+	/* At any time the WM9081 is active it will have this clock */
+	return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
+					CLKOUT_RATE, 0);
+}
+
+static const struct snd_soc_pcm_stream sub_params = {
+	.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	.rate_min = 44100,
+	.rate_max = 44100,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+SND_SOC_DAILINK_DEFS(cpu,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm5100.1-001a", "wm5100-aif1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(baseband,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm5100-aif2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
+
+SND_SOC_DAILINK_DEFS(speaker,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm5100-aif3")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm9081.1-006c", "wm9081-hifi")));
+
+static struct snd_soc_dai_link lowland_dai[] = {
+	{
+		.name = "CPU",
+		.stream_name = "CPU",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBP_CFP,
+		.init = lowland_wm5100_init,
+		SND_SOC_DAILINK_REG(cpu),
+	},
+	{
+		.name = "Baseband",
+		.stream_name = "Baseband",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(baseband),
+	},
+	{
+		.name = "Sub Speaker",
+		.stream_name = "Sub Speaker",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		.c2c_params = &sub_params,
+		.num_c2c_params = 1,
+		.init = lowland_wm9081_init,
+		SND_SOC_DAILINK_REG(speaker),
+	},
+};
+
+static struct snd_soc_codec_conf lowland_codec_conf[] = {
+	{
+		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
+		.name_prefix = "Sub",
+	},
+};
+
+static const struct snd_kcontrol_new controls[] = {
+	SOC_DAPM_PIN_SWITCH("Main Speaker"),
+	SOC_DAPM_PIN_SWITCH("Main DMIC"),
+	SOC_DAPM_PIN_SWITCH("Main AMIC"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Line Out"),
+};
+
+static const struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_LINE("Line Out", NULL),
+
+	SND_SOC_DAPM_SPK("Main Speaker", NULL),
+
+	SND_SOC_DAPM_MIC("Main AMIC", NULL),
+	SND_SOC_DAPM_MIC("Main DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+	{ "Sub IN1", NULL, "HPOUT2L" },
+	{ "Sub IN2", NULL, "HPOUT2R" },
+
+	{ "Main Speaker", NULL, "Sub SPKN" },
+	{ "Main Speaker", NULL, "Sub SPKP" },
+	{ "Main Speaker", NULL, "SPKDAT1" },
+};
+
+static struct snd_soc_card lowland = {
+	.name = "Lowland",
+	.owner = THIS_MODULE,
+	.dai_link = lowland_dai,
+	.num_links = ARRAY_SIZE(lowland_dai),
+	.codec_conf = lowland_codec_conf,
+	.num_configs = ARRAY_SIZE(lowland_codec_conf),
+
+	.controls = controls,
+	.num_controls = ARRAY_SIZE(controls),
+	.dapm_widgets = widgets,
+	.num_dapm_widgets = ARRAY_SIZE(widgets),
+	.dapm_routes = audio_paths,
+	.num_dapm_routes = ARRAY_SIZE(audio_paths),
+};
+
+static int lowland_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &lowland;
+	int ret;
+
+	card->dev = &pdev->dev;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret)
+		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
+
+	return ret;
+}
+
+static struct platform_driver lowland_driver = {
+	.driver = {
+		.name = "lowland",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = lowland_probe,
+};
+
+module_platform_driver(lowland_driver);
+
+MODULE_DESCRIPTION("Lowland audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:lowland");

linux-7.2.3/sound/soc/samsung/midas_wm1811.c

@@ -0,0 +1,775 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Midas audio support
+//
+// Copyright (C) 2018 Simon Shields <simon@lineageos.org>
+// Copyright (C) 2020 Samsung Electronics Co., Ltd.
+
+#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"
+
+/*
+ * The MCLK1 clock source is XCLKOUT with its mux set to the external fixed rate
+ * oscillator (XXTI).
+ */
+#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,
+	},
+};
+
+/*
+ * min_mv/max_mv values in this struct are set up based on DT values.
+ */
+static struct snd_soc_jack_zone headset_jack_zones[] = {
+	{ .jack_type = SND_JACK_HEADPHONE, },
+	{ .jack_type = SND_JACK_HEADSET, },
+	{ .jack_type = SND_JACK_HEADPHONE, },
+};
+
+/*
+ * This is used for manual detection in headset_key_check, we reuse the
+ * structure since it's convenient.
+ *
+ * min_mv/max_mv values in this struct are set up based on DT values.
+ */
+static struct snd_soc_jack_zone headset_key_zones[] = {
+	{ .jack_type = SND_JACK_BTN_0, },  /* Media */
+	{ .jack_type = SND_JACK_BTN_1, },  /* Volume Up */
+	{ .jack_type = SND_JACK_BTN_2, },  /* Volume Down */
+};
+
+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;
+
+	/* Enable headset mic bias regulator so that the ADC reading works */
+	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);
+
+	/* Sleep for a small amount of time to get the value to stabilize */
+	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;
+
+	/* Filter out keypresses when 4 pole jack not detected */
+	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 no new rate is requested, set FLL1 to a sane default for jack
+	 * detection.
+	 */
+	if (!rate)
+		rate = DEFAULT_FLL1_RATE;
+
+	if (rate != priv->fll1_rate && priv->fll1_rate) {
+		/* while reconfiguring, switch to MCLK2 for SYSCLK */
+		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;
+
+	/* AIF1CLK should be at least 3MHz for "optimal performance" */
+	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,
+};
+
+/*
+ * We only have a single external speaker, so mix stereo data
+ * to a single mono stream.
+ */
+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),
+
+	/* FIXME: toggle MAX77693 on i9300/i9305 */
+	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),
+};
+
+/* Default routing; supplemented by audio-routing DT property */
+static const struct snd_soc_dapm_route midas_dapm_routes[] = {
+	/* Bind microphones with their respective regulator supplies */
+	{"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;
+
+	/* Use MCLK2 as SYSCLK for boot */
+	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 {
+		/* Some devices (n8000, t310) use a GPIO to detect the jack. */
+		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) {
+		/* 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;
+		}
+	}
+
+	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");

linux-7.2.3/sound/soc/samsung/odroid.c

@@ -0,0 +1,340 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (C) 2017 Samsung Electronics Co., Ltd.
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include "i2s.h"
+#include "i2s-regs.h"
+
+struct odroid_priv {
+	struct snd_soc_card card;
+	struct clk *clk_i2s_bus;
+	struct clk *sclk_i2s;
+
+	/* Spinlock protecting fields below */
+	spinlock_t lock;
+	unsigned int be_sample_rate;
+	bool be_active;
+};
+
+static int odroid_card_fe_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+
+	return 0;
+}
+
+static int odroid_card_fe_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 odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+	guard(spinlock_irqsave)(&priv->lock);
+	if (priv->be_active && priv->be_sample_rate != params_rate(params))
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct snd_soc_ops odroid_card_fe_ops = {
+	.startup = odroid_card_fe_startup,
+	.hw_params = odroid_card_fe_hw_params,
+};
+
+static int odroid_card_be_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 odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	unsigned int pll_freq, rclk_freq, rfs;
+	int ret;
+
+	switch (params_rate(params)) {
+	case 64000:
+		pll_freq = 196608001U;
+		rfs = 384;
+		break;
+	case 44100:
+	case 88200:
+		pll_freq = 180633609U;
+		rfs = 512;
+		break;
+	case 32000:
+	case 48000:
+	case 96000:
+		pll_freq = 196608001U;
+		rfs = 512;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = clk_set_rate(priv->clk_i2s_bus, pll_freq / 2 + 1);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 *  We add 2 to the rclk_freq value in order to avoid too low clock
+	 *  frequency values due to the EPLL output frequency not being exact
+	 *  multiple of the audio sampling rate.
+	 */
+	rclk_freq = params_rate(params) * rfs + 2;
+
+	ret = clk_set_rate(priv->sclk_i2s, rclk_freq);
+	if (ret < 0)
+		return ret;
+
+	if (rtd->dai_link->num_codecs > 1) {
+		struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 1);
+
+		ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk_freq,
+					     SND_SOC_CLOCK_IN);
+		if (ret < 0)
+			return ret;
+	}
+
+	scoped_guard(spinlock_irqsave, &priv->lock)
+		priv->be_sample_rate = params_rate(params);
+	return 0;
+}
+
+static int odroid_card_be_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct odroid_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+	guard(spinlock_irqsave)(&priv->lock);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		priv->be_active = true;
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		priv->be_active = false;
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_ops odroid_card_be_ops = {
+	.hw_params = odroid_card_be_hw_params,
+	.trigger = odroid_card_be_trigger,
+};
+
+/* DAPM routes for backward compatibility with old DTS */
+static const struct snd_soc_dapm_route odroid_dapm_routes[] = {
+	{ "I2S Playback", NULL, "Mixer DAI TX" },
+	{ "HiFi Playback", NULL, "Mixer DAI TX" },
+};
+
+SND_SOC_DAILINK_DEFS(primary,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_DUMMY()),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("3830000.i2s")));
+
+SND_SOC_DAILINK_DEFS(mixer,
+	DAILINK_COMP_ARRAY(COMP_DUMMY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(secondary,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_DUMMY()),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("3830000.i2s-sec")));
+
+static struct snd_soc_dai_link odroid_card_dais[] = {
+	{
+		/* Primary FE <-> BE link */
+		.ops = &odroid_card_fe_ops,
+		.name = "Primary",
+		.stream_name = "Primary",
+		.dynamic = 1,
+		.playback_only = 1,
+		SND_SOC_DAILINK_REG(primary),
+	}, {
+		/* BE <-> CODECs link */
+		.name = "I2S Mixer",
+		.ops = &odroid_card_be_ops,
+		.no_pcm = 1,
+		.playback_only = 1,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBC_CFC,
+		SND_SOC_DAILINK_REG(mixer),
+	}, {
+		/* Secondary FE <-> BE link */
+		.ops = &odroid_card_fe_ops,
+		.name = "Secondary",
+		.stream_name = "Secondary",
+		.dynamic = 1,
+		.playback_only = 1,
+		SND_SOC_DAILINK_REG(secondary),
+	}
+};
+
+static int odroid_audio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *cpu_dai = NULL;
+	struct device_node *cpu, *codec;
+	struct odroid_priv *priv;
+	struct snd_soc_card *card;
+	struct snd_soc_dai_link *link, *codec_link;
+	int num_pcms, ret, i;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	card = &priv->card;
+	card->dev = dev;
+
+	card->owner = THIS_MODULE;
+	card->fully_routed = true;
+
+	spin_lock_init(&priv->lock);
+	snd_soc_card_set_drvdata(card, priv);
+
+	ret = snd_soc_of_parse_card_name(card, "model");
+	if (ret < 0)
+		return ret;
+
+	if (of_property_present(dev->of_node, "samsung,audio-widgets")) {
+		ret = snd_soc_of_parse_audio_simple_widgets(card,
+						"samsung,audio-widgets");
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = 0;
+	if (of_property_present(dev->of_node, "audio-routing"))
+		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
+	else if (of_property_present(dev->of_node, "samsung,audio-routing"))
+		ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
+	if (ret < 0)
+		return ret;
+
+	card->dai_link = odroid_card_dais;
+	card->num_links = ARRAY_SIZE(odroid_card_dais);
+
+	cpu = of_get_child_by_name(dev->of_node, "cpu");
+	codec = of_get_child_by_name(dev->of_node, "codec");
+	link = card->dai_link;
+	codec_link = &card->dai_link[1];
+
+	/*
+	 * For backwards compatibility create the secondary CPU DAI link only
+	 * if there are 2 CPU DAI entries in the cpu sound-dai property in DT.
+	 * Also add required DAPM routes not available in old DTS.
+	 */
+	num_pcms = of_count_phandle_with_args(cpu, "sound-dai",
+					      "#sound-dai-cells");
+	if (num_pcms == 1) {
+		card->dapm_routes = odroid_dapm_routes;
+		card->num_dapm_routes = ARRAY_SIZE(odroid_dapm_routes);
+		card->num_links--;
+	}
+
+	for (i = 0; i < num_pcms; i++, link += 2) {
+		ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name, i);
+		if (ret < 0)
+			break;
+	}
+	if (ret == 0) {
+		cpu_dai = of_parse_phandle(cpu, "sound-dai", 0);
+		if (!cpu_dai)
+			ret = -EINVAL;
+	}
+
+	of_node_put(cpu);
+	if (ret < 0)
+		goto err_put_node;
+
+	ret = snd_soc_of_get_dai_link_codecs(dev, codec, codec_link);
+	if (ret < 0)
+		goto err_put_cpu_dai;
+
+	/* Set capture capability only for boards with the MAX98090 CODEC */
+	if (codec_link->num_codecs > 1) {
+		card->dai_link[0].playback_only = 0;
+		card->dai_link[1].playback_only = 0;
+	}
+
+	priv->sclk_i2s = of_clk_get_by_name(cpu_dai, "i2s_opclk1");
+	if (IS_ERR(priv->sclk_i2s)) {
+		ret = PTR_ERR(priv->sclk_i2s);
+		goto err_put_cpu_dai;
+	}
+
+	priv->clk_i2s_bus = of_clk_get_by_name(cpu_dai, "iis");
+	if (IS_ERR(priv->clk_i2s_bus)) {
+		ret = PTR_ERR(priv->clk_i2s_bus);
+		goto err_put_sclk;
+	}
+
+	ret = devm_snd_soc_register_card(dev, card);
+	if (ret < 0) {
+		dev_err_probe(dev, ret, "snd_soc_register_card() failed\n");
+		goto err_put_clk_i2s;
+	}
+
+	of_node_put(cpu_dai);
+	of_node_put(codec);
+	return 0;
+
+err_put_clk_i2s:
+	clk_put(priv->clk_i2s_bus);
+err_put_sclk:
+	clk_put(priv->sclk_i2s);
+err_put_cpu_dai:
+	of_node_put(cpu_dai);
+	snd_soc_of_put_dai_link_codecs(codec_link);
+err_put_node:
+	of_node_put(codec);
+	return ret;
+}
+
+static void odroid_audio_remove(struct platform_device *pdev)
+{
+	struct odroid_priv *priv = platform_get_drvdata(pdev);
+
+	snd_soc_of_put_dai_link_codecs(&priv->card.dai_link[1]);
+	clk_put(priv->sclk_i2s);
+	clk_put(priv->clk_i2s_bus);
+}
+
+static const struct of_device_id odroid_audio_of_match[] = {
+	{ .compatible	= "hardkernel,odroid-xu3-audio" },
+	{ .compatible	= "hardkernel,odroid-xu4-audio" },
+	{ .compatible	= "samsung,odroid-xu3-audio" },
+	{ .compatible	= "samsung,odroid-xu4-audio" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, odroid_audio_of_match);
+
+static struct platform_driver odroid_audio_driver = {
+	.driver = {
+		.name		= "odroid-audio",
+		.of_match_table	= odroid_audio_of_match,
+		.pm		= &snd_soc_pm_ops,
+	},
+	.probe	= odroid_audio_probe,
+	.remove = odroid_audio_remove,
+};
+module_platform_driver(odroid_audio_driver);
+
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
+MODULE_DESCRIPTION("Odroid XU3/XU4 audio support");
+MODULE_LICENSE("GPL v2");

linux-7.2.3/sound/soc/samsung/pcm.c

@@ -0,0 +1,586 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Audio Layer - S3C PCM-Controller driver
+//
+// Copyright (c) 2009 Samsung Electronics Co. Ltd
+// Author: Jaswinder Singh <jassisinghbrar@gmail.com>
+// based upon I2S drivers by Ben Dooks.
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include <linux/platform_data/asoc-s3c.h>
+
+#include "dma.h"
+#include "pcm.h"
+
+/*Register Offsets */
+#define S3C_PCM_CTL		0x00
+#define S3C_PCM_CLKCTL		0x04
+#define S3C_PCM_TXFIFO		0x08
+#define S3C_PCM_RXFIFO		0x0C
+#define S3C_PCM_IRQCTL		0x10
+#define S3C_PCM_IRQSTAT		0x14
+#define S3C_PCM_FIFOSTAT	0x18
+#define S3C_PCM_CLRINT		0x20
+
+/* PCM_CTL Bit-Fields */
+#define S3C_PCM_CTL_TXDIPSTICK_MASK	0x3f
+#define S3C_PCM_CTL_TXDIPSTICK_SHIFT	13
+#define S3C_PCM_CTL_RXDIPSTICK_MASK	0x3f
+#define S3C_PCM_CTL_RXDIPSTICK_SHIFT	7
+#define S3C_PCM_CTL_TXDMA_EN		(0x1 << 6)
+#define S3C_PCM_CTL_RXDMA_EN		(0x1 << 5)
+#define S3C_PCM_CTL_TXMSB_AFTER_FSYNC	(0x1 << 4)
+#define S3C_PCM_CTL_RXMSB_AFTER_FSYNC	(0x1 << 3)
+#define S3C_PCM_CTL_TXFIFO_EN		(0x1 << 2)
+#define S3C_PCM_CTL_RXFIFO_EN		(0x1 << 1)
+#define S3C_PCM_CTL_ENABLE		(0x1 << 0)
+
+/* PCM_CLKCTL Bit-Fields */
+#define S3C_PCM_CLKCTL_SERCLK_EN	(0x1 << 19)
+#define S3C_PCM_CLKCTL_SERCLKSEL_PCLK	(0x1 << 18)
+#define S3C_PCM_CLKCTL_SCLKDIV_MASK	0x1ff
+#define S3C_PCM_CLKCTL_SYNCDIV_MASK	0x1ff
+#define S3C_PCM_CLKCTL_SCLKDIV_SHIFT	9
+#define S3C_PCM_CLKCTL_SYNCDIV_SHIFT	0
+
+/* PCM_TXFIFO Bit-Fields */
+#define S3C_PCM_TXFIFO_DVALID	(0x1 << 16)
+#define S3C_PCM_TXFIFO_DATA_MSK	(0xffff << 0)
+
+/* PCM_RXFIFO Bit-Fields */
+#define S3C_PCM_RXFIFO_DVALID	(0x1 << 16)
+#define S3C_PCM_RXFIFO_DATA_MSK	(0xffff << 0)
+
+/* PCM_IRQCTL Bit-Fields */
+#define S3C_PCM_IRQCTL_IRQEN		(0x1 << 14)
+#define S3C_PCM_IRQCTL_WRDEN		(0x1 << 12)
+#define S3C_PCM_IRQCTL_TXEMPTYEN	(0x1 << 11)
+#define S3C_PCM_IRQCTL_TXALMSTEMPTYEN	(0x1 << 10)
+#define S3C_PCM_IRQCTL_TXFULLEN		(0x1 << 9)
+#define S3C_PCM_IRQCTL_TXALMSTFULLEN	(0x1 << 8)
+#define S3C_PCM_IRQCTL_TXSTARVEN	(0x1 << 7)
+#define S3C_PCM_IRQCTL_TXERROVRFLEN	(0x1 << 6)
+#define S3C_PCM_IRQCTL_RXEMPTEN		(0x1 << 5)
+#define S3C_PCM_IRQCTL_RXALMSTEMPTEN	(0x1 << 4)
+#define S3C_PCM_IRQCTL_RXFULLEN		(0x1 << 3)
+#define S3C_PCM_IRQCTL_RXALMSTFULLEN	(0x1 << 2)
+#define S3C_PCM_IRQCTL_RXSTARVEN	(0x1 << 1)
+#define S3C_PCM_IRQCTL_RXERROVRFLEN	(0x1 << 0)
+
+/* PCM_IRQSTAT Bit-Fields */
+#define S3C_PCM_IRQSTAT_IRQPND		(0x1 << 13)
+#define S3C_PCM_IRQSTAT_WRD_XFER	(0x1 << 12)
+#define S3C_PCM_IRQSTAT_TXEMPTY		(0x1 << 11)
+#define S3C_PCM_IRQSTAT_TXALMSTEMPTY	(0x1 << 10)
+#define S3C_PCM_IRQSTAT_TXFULL		(0x1 << 9)
+#define S3C_PCM_IRQSTAT_TXALMSTFULL	(0x1 << 8)
+#define S3C_PCM_IRQSTAT_TXSTARV		(0x1 << 7)
+#define S3C_PCM_IRQSTAT_TXERROVRFL	(0x1 << 6)
+#define S3C_PCM_IRQSTAT_RXEMPT		(0x1 << 5)
+#define S3C_PCM_IRQSTAT_RXALMSTEMPT	(0x1 << 4)
+#define S3C_PCM_IRQSTAT_RXFULL		(0x1 << 3)
+#define S3C_PCM_IRQSTAT_RXALMSTFULL	(0x1 << 2)
+#define S3C_PCM_IRQSTAT_RXSTARV		(0x1 << 1)
+#define S3C_PCM_IRQSTAT_RXERROVRFL	(0x1 << 0)
+
+/* PCM_FIFOSTAT Bit-Fields */
+#define S3C_PCM_FIFOSTAT_TXCNT_MSK		(0x3f << 14)
+#define S3C_PCM_FIFOSTAT_TXFIFOEMPTY		(0x1 << 13)
+#define S3C_PCM_FIFOSTAT_TXFIFOALMSTEMPTY	(0x1 << 12)
+#define S3C_PCM_FIFOSTAT_TXFIFOFULL		(0x1 << 11)
+#define S3C_PCM_FIFOSTAT_TXFIFOALMSTFULL	(0x1 << 10)
+#define S3C_PCM_FIFOSTAT_RXCNT_MSK		(0x3f << 4)
+#define S3C_PCM_FIFOSTAT_RXFIFOEMPTY		(0x1 << 3)
+#define S3C_PCM_FIFOSTAT_RXFIFOALMSTEMPTY	(0x1 << 2)
+#define S3C_PCM_FIFOSTAT_RXFIFOFULL		(0x1 << 1)
+#define S3C_PCM_FIFOSTAT_RXFIFOALMSTFULL	(0x1 << 0)
+
+/**
+ * struct s3c_pcm_info - S3C PCM Controller information
+ * @lock: Spin lock
+ * @dev: The parent device passed to use from the probe.
+ * @regs: The pointer to the device register block.
+ * @sclk_per_fs: number of sclk per frame sync
+ * @idleclk: Whether to keep PCMSCLK enabled even when idle (no active xfer)
+ * @pclk: the PCLK_PCM (pcm) clock pointer
+ * @cclk: the SCLK_AUDIO (audio-bus) clock pointer
+ * @dma_playback: DMA information for playback channel.
+ * @dma_capture: DMA information for capture channel.
+ */
+struct s3c_pcm_info {
+	spinlock_t lock;
+	struct device	*dev;
+	void __iomem	*regs;
+
+	unsigned int sclk_per_fs;
+
+	/* Whether to keep PCMSCLK enabled even when idle(no active xfer) */
+	unsigned int idleclk;
+
+	struct clk	*pclk;
+	struct clk	*cclk;
+
+	struct snd_dmaengine_dai_dma_data *dma_playback;
+	struct snd_dmaengine_dai_dma_data *dma_capture;
+};
+
+static struct snd_dmaengine_dai_dma_data s3c_pcm_stereo_out[] = {
+	[0] = {
+		.addr_width	= 4,
+	},
+	[1] = {
+		.addr_width	= 4,
+	},
+};
+
+static struct snd_dmaengine_dai_dma_data s3c_pcm_stereo_in[] = {
+	[0] = {
+		.addr_width	= 4,
+	},
+	[1] = {
+		.addr_width	= 4,
+	},
+};
+
+static struct s3c_pcm_info s3c_pcm[2];
+
+static void s3c_pcm_snd_txctrl(struct s3c_pcm_info *pcm, int on)
+{
+	void __iomem *regs = pcm->regs;
+	u32 ctl, clkctl;
+
+	clkctl = readl(regs + S3C_PCM_CLKCTL);
+	ctl = readl(regs + S3C_PCM_CTL);
+	ctl &= ~(S3C_PCM_CTL_TXDIPSTICK_MASK
+			 << S3C_PCM_CTL_TXDIPSTICK_SHIFT);
+
+	if (on) {
+		ctl |= S3C_PCM_CTL_TXDMA_EN;
+		ctl |= S3C_PCM_CTL_TXFIFO_EN;
+		ctl |= S3C_PCM_CTL_ENABLE;
+		ctl |= (0x4<<S3C_PCM_CTL_TXDIPSTICK_SHIFT);
+		clkctl |= S3C_PCM_CLKCTL_SERCLK_EN;
+	} else {
+		ctl &= ~S3C_PCM_CTL_TXDMA_EN;
+		ctl &= ~S3C_PCM_CTL_TXFIFO_EN;
+
+		if (!(ctl & S3C_PCM_CTL_RXFIFO_EN)) {
+			ctl &= ~S3C_PCM_CTL_ENABLE;
+			if (!pcm->idleclk)
+				clkctl |= S3C_PCM_CLKCTL_SERCLK_EN;
+		}
+	}
+
+	writel(clkctl, regs + S3C_PCM_CLKCTL);
+	writel(ctl, regs + S3C_PCM_CTL);
+}
+
+static void s3c_pcm_snd_rxctrl(struct s3c_pcm_info *pcm, int on)
+{
+	void __iomem *regs = pcm->regs;
+	u32 ctl, clkctl;
+
+	ctl = readl(regs + S3C_PCM_CTL);
+	clkctl = readl(regs + S3C_PCM_CLKCTL);
+	ctl &= ~(S3C_PCM_CTL_RXDIPSTICK_MASK
+			 << S3C_PCM_CTL_RXDIPSTICK_SHIFT);
+
+	if (on) {
+		ctl |= S3C_PCM_CTL_RXDMA_EN;
+		ctl |= S3C_PCM_CTL_RXFIFO_EN;
+		ctl |= S3C_PCM_CTL_ENABLE;
+		ctl |= (0x20<<S3C_PCM_CTL_RXDIPSTICK_SHIFT);
+		clkctl |= S3C_PCM_CLKCTL_SERCLK_EN;
+	} else {
+		ctl &= ~S3C_PCM_CTL_RXDMA_EN;
+		ctl &= ~S3C_PCM_CTL_RXFIFO_EN;
+
+		if (!(ctl & S3C_PCM_CTL_TXFIFO_EN)) {
+			ctl &= ~S3C_PCM_CTL_ENABLE;
+			if (!pcm->idleclk)
+				clkctl |= S3C_PCM_CLKCTL_SERCLK_EN;
+		}
+	}
+
+	writel(clkctl, regs + S3C_PCM_CLKCTL);
+	writel(ctl, regs + S3C_PCM_CTL);
+}
+
+static int s3c_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
+			       struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(snd_soc_rtd_to_cpu(rtd, 0));
+
+	dev_dbg(pcm->dev, "Entered %s\n", __func__);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		scoped_guard(spinlock_irqsave, &pcm->lock) {
+			if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+				s3c_pcm_snd_rxctrl(pcm, 1);
+			else
+				s3c_pcm_snd_txctrl(pcm, 1);
+		}
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		scoped_guard(spinlock_irqsave, &pcm->lock) {
+			if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+				s3c_pcm_snd_rxctrl(pcm, 0);
+			else
+				s3c_pcm_snd_txctrl(pcm, 0);
+		}
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *socdai)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(snd_soc_rtd_to_cpu(rtd, 0));
+	void __iomem *regs = pcm->regs;
+	struct clk *clk;
+	int sclk_div, sync_div;
+	u32 clkctl;
+
+	dev_dbg(pcm->dev, "Entered %s\n", __func__);
+
+	/* Strictly check for sample size */
+	switch (params_width(params)) {
+	case 16:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	scoped_guard(spinlock_irqsave, &pcm->lock) {
+		/* Get hold of the PCMSOURCE_CLK */
+		clkctl = readl(regs + S3C_PCM_CLKCTL);
+		if (clkctl & S3C_PCM_CLKCTL_SERCLKSEL_PCLK)
+			clk = pcm->pclk;
+		else
+			clk = pcm->cclk;
+
+		/* Set the SCLK divider */
+		sclk_div = clk_get_rate(clk) / pcm->sclk_per_fs /
+						params_rate(params) / 2 - 1;
+
+		clkctl &= ~(S3C_PCM_CLKCTL_SCLKDIV_MASK
+				<< S3C_PCM_CLKCTL_SCLKDIV_SHIFT);
+		clkctl |= ((sclk_div & S3C_PCM_CLKCTL_SCLKDIV_MASK)
+				<< S3C_PCM_CLKCTL_SCLKDIV_SHIFT);
+
+		/* Set the SYNC divider */
+		sync_div = pcm->sclk_per_fs - 1;
+
+		clkctl &= ~(S3C_PCM_CLKCTL_SYNCDIV_MASK
+					<< S3C_PCM_CLKCTL_SYNCDIV_SHIFT);
+		clkctl |= ((sync_div & S3C_PCM_CLKCTL_SYNCDIV_MASK)
+					<< S3C_PCM_CLKCTL_SYNCDIV_SHIFT);
+
+		writel(clkctl, regs + S3C_PCM_CLKCTL);
+	}
+	dev_dbg(pcm->dev, "PCMSOURCE_CLK-%lu SCLK=%ufs SCLK_DIV=%d SYNC_DIV=%d\n",
+				clk_get_rate(clk), pcm->sclk_per_fs,
+				sclk_div, sync_div);
+
+	return 0;
+}
+
+static int s3c_pcm_set_fmt(struct snd_soc_dai *cpu_dai,
+			       unsigned int fmt)
+{
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai);
+	void __iomem *regs = pcm->regs;
+	u32 ctl;
+
+	dev_dbg(pcm->dev, "Entered %s\n", __func__);
+
+	guard(spinlock_irqsave)(&pcm->lock);
+
+	ctl = readl(regs + S3C_PCM_CTL);
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_IB_NF:
+		/* Nothing to do, IB_NF by default */
+		break;
+	default:
+		dev_err(pcm->dev, "Unsupported clock inversion!\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+	case SND_SOC_DAIFMT_BP_FP:
+		/* Nothing to do, Master by default */
+		break;
+	default:
+		dev_err(pcm->dev, "Unsupported master/slave format!\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_CLOCK_MASK) {
+	case SND_SOC_DAIFMT_CONT:
+		pcm->idleclk = 1;
+		break;
+	case SND_SOC_DAIFMT_GATED:
+		pcm->idleclk = 0;
+		break;
+	default:
+		dev_err(pcm->dev, "Invalid Clock gating request!\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_DSP_A:
+		ctl |= S3C_PCM_CTL_TXMSB_AFTER_FSYNC;
+		ctl |= S3C_PCM_CTL_RXMSB_AFTER_FSYNC;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		ctl &= ~S3C_PCM_CTL_TXMSB_AFTER_FSYNC;
+		ctl &= ~S3C_PCM_CTL_RXMSB_AFTER_FSYNC;
+		break;
+	default:
+		dev_err(pcm->dev, "Unsupported data format!\n");
+		return -EINVAL;
+	}
+
+	writel(ctl, regs + S3C_PCM_CTL);
+	return 0;
+}
+
+static int s3c_pcm_set_clkdiv(struct snd_soc_dai *cpu_dai,
+						int div_id, int div)
+{
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai);
+
+	switch (div_id) {
+	case S3C_PCM_SCLK_PER_FS:
+		pcm->sclk_per_fs = div;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int s3c_pcm_set_sysclk(struct snd_soc_dai *cpu_dai,
+				  int clk_id, unsigned int freq, int dir)
+{
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai);
+	void __iomem *regs = pcm->regs;
+	u32 clkctl = readl(regs + S3C_PCM_CLKCTL);
+
+	switch (clk_id) {
+	case S3C_PCM_CLKSRC_PCLK:
+		clkctl |= S3C_PCM_CLKCTL_SERCLKSEL_PCLK;
+		break;
+
+	case S3C_PCM_CLKSRC_MUX:
+		clkctl &= ~S3C_PCM_CLKCTL_SERCLKSEL_PCLK;
+
+		if (clk_get_rate(pcm->cclk) != freq)
+			clk_set_rate(pcm->cclk, freq);
+
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	writel(clkctl, regs + S3C_PCM_CLKCTL);
+
+	return 0;
+}
+
+static int s3c_pcm_dai_probe(struct snd_soc_dai *dai)
+{
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(dai);
+
+	snd_soc_dai_init_dma_data(dai, pcm->dma_playback, pcm->dma_capture);
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops s3c_pcm_dai_ops = {
+	.probe		= s3c_pcm_dai_probe,
+	.set_sysclk	= s3c_pcm_set_sysclk,
+	.set_clkdiv	= s3c_pcm_set_clkdiv,
+	.trigger	= s3c_pcm_trigger,
+	.hw_params	= s3c_pcm_hw_params,
+	.set_fmt	= s3c_pcm_set_fmt,
+};
+
+#define S3C_PCM_RATES  SNDRV_PCM_RATE_8000_96000
+
+#define S3C_PCM_DAI_DECLARE			\
+	.symmetric_rate = 1,					\
+	.ops = &s3c_pcm_dai_ops,				\
+	.playback = {						\
+		.channels_min	= 2,				\
+		.channels_max	= 2,				\
+		.rates		= S3C_PCM_RATES,		\
+		.formats	= SNDRV_PCM_FMTBIT_S16_LE,	\
+	},							\
+	.capture = {						\
+		.channels_min	= 2,				\
+		.channels_max	= 2,				\
+		.rates		= S3C_PCM_RATES,		\
+		.formats	= SNDRV_PCM_FMTBIT_S16_LE,	\
+	}
+
+static struct snd_soc_dai_driver s3c_pcm_dai[] = {
+	[0] = {
+		.name	= "samsung-pcm.0",
+		S3C_PCM_DAI_DECLARE,
+	},
+	[1] = {
+		.name	= "samsung-pcm.1",
+		S3C_PCM_DAI_DECLARE,
+	},
+};
+
+static const struct snd_soc_component_driver s3c_pcm_component = {
+	.name			= "s3c-pcm",
+	.legacy_dai_naming	= 1,
+};
+
+static int s3c_pcm_dev_probe(struct platform_device *pdev)
+{
+	struct s3c_pcm_info *pcm;
+	struct resource *mem_res;
+	struct s3c_audio_pdata *pcm_pdata;
+	dma_filter_fn filter;
+	int ret;
+
+	/* Check for valid device index */
+	if ((pdev->id < 0) || pdev->id >= ARRAY_SIZE(s3c_pcm)) {
+		dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
+		return -EINVAL;
+	}
+
+	pcm_pdata = pdev->dev.platform_data;
+
+	if (pcm_pdata && pcm_pdata->cfg_gpio && pcm_pdata->cfg_gpio(pdev)) {
+		dev_err(&pdev->dev, "Unable to configure gpio\n");
+		return -EINVAL;
+	}
+
+	pcm = &s3c_pcm[pdev->id];
+	pcm->dev = &pdev->dev;
+
+	spin_lock_init(&pcm->lock);
+
+	/* Default is 128fs */
+	pcm->sclk_per_fs = 128;
+
+	pcm->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &mem_res);
+	if (IS_ERR(pcm->regs))
+		return PTR_ERR(pcm->regs);
+
+	pcm->cclk = devm_clk_get(&pdev->dev, "audio-bus");
+	if (IS_ERR(pcm->cclk)) {
+		dev_err(&pdev->dev, "failed to get audio-bus clock\n");
+		return PTR_ERR(pcm->cclk);
+	}
+	ret = clk_prepare_enable(pcm->cclk);
+	if (ret)
+		return ret;
+
+	/* record our pcm structure for later use in the callbacks */
+	dev_set_drvdata(&pdev->dev, pcm);
+
+	pcm->pclk = devm_clk_get(&pdev->dev, "pcm");
+	if (IS_ERR(pcm->pclk)) {
+		dev_err(&pdev->dev, "failed to get pcm clock\n");
+		ret = PTR_ERR(pcm->pclk);
+		goto err_dis_cclk;
+	}
+	ret = clk_prepare_enable(pcm->pclk);
+	if (ret)
+		goto err_dis_cclk;
+
+	s3c_pcm_stereo_in[pdev->id].addr = mem_res->start + S3C_PCM_RXFIFO;
+	s3c_pcm_stereo_out[pdev->id].addr = mem_res->start + S3C_PCM_TXFIFO;
+
+	filter = NULL;
+	if (pcm_pdata) {
+		s3c_pcm_stereo_in[pdev->id].filter_data = pcm_pdata->dma_capture;
+		s3c_pcm_stereo_out[pdev->id].filter_data = pcm_pdata->dma_playback;
+		filter = pcm_pdata->dma_filter;
+	}
+
+	pcm->dma_capture = &s3c_pcm_stereo_in[pdev->id];
+	pcm->dma_playback = &s3c_pcm_stereo_out[pdev->id];
+
+	ret = samsung_asoc_dma_platform_register(&pdev->dev, filter,
+						 NULL, NULL, NULL);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to get register DMA: %d\n", ret);
+		goto err_dis_pclk;
+	}
+
+	pm_runtime_enable(&pdev->dev);
+
+	ret = devm_snd_soc_register_component(&pdev->dev, &s3c_pcm_component,
+					 &s3c_pcm_dai[pdev->id], 1);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "failed to get register DAI: %d\n", ret);
+		goto err_dis_pm;
+	}
+
+	return 0;
+
+err_dis_pm:
+	pm_runtime_disable(&pdev->dev);
+err_dis_pclk:
+	clk_disable_unprepare(pcm->pclk);
+err_dis_cclk:
+	clk_disable_unprepare(pcm->cclk);
+	return ret;
+}
+
+static void s3c_pcm_dev_remove(struct platform_device *pdev)
+{
+	struct s3c_pcm_info *pcm = &s3c_pcm[pdev->id];
+
+	pm_runtime_disable(&pdev->dev);
+	clk_disable_unprepare(pcm->cclk);
+	clk_disable_unprepare(pcm->pclk);
+}
+
+static struct platform_driver s3c_pcm_driver = {
+	.probe  = s3c_pcm_dev_probe,
+	.remove = s3c_pcm_dev_remove,
+	.driver = {
+		.name = "samsung-pcm",
+	},
+};
+
+module_platform_driver(s3c_pcm_driver);
+
+/* Module information */
+MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
+MODULE_DESCRIPTION("S3C PCM Controller Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:samsung-pcm");

linux-7.2.3/sound/soc/samsung/pcm.h

@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __S3C_PCM_H
+#define __S3C_PCM_H __FILE__
+
+#define S3C_PCM_CLKSRC_PCLK	0
+#define S3C_PCM_CLKSRC_MUX	1
+
+#define S3C_PCM_SCLK_PER_FS	0
+
+#endif /* __S3C_PCM_H */

linux-7.2.3/sound/soc/samsung/smdk_spdif.c

@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// smdk_spdif.c - S/PDIF audio for SMDK
+//
+// Copyright (C) 2010 Samsung Electronics Co., Ltd.
+
+#include <linux/clk.h>
+#include <linux/module.h>
+
+#include <sound/soc.h>
+
+#include "spdif.h"
+
+/* Audio clock settings are belonged to board specific part. Every
+ * board can set audio source clock setting which is matched with H/W
+ * like this function-'set_audio_clock_heirachy'.
+ */
+static int set_audio_clock_heirachy(struct platform_device *pdev)
+{
+	struct clk *fout_epll, *mout_epll, *sclk_audio0, *sclk_spdif;
+	int ret = 0;
+
+	fout_epll = clk_get(NULL, "fout_epll");
+	if (IS_ERR(fout_epll)) {
+		printk(KERN_WARNING "%s: Cannot find fout_epll.\n",
+				__func__);
+		return -EINVAL;
+	}
+
+	mout_epll = clk_get(NULL, "mout_epll");
+	if (IS_ERR(mout_epll)) {
+		printk(KERN_WARNING "%s: Cannot find mout_epll.\n",
+				__func__);
+		ret = -EINVAL;
+		goto out1;
+	}
+
+	sclk_audio0 = clk_get(&pdev->dev, "sclk_audio");
+	if (IS_ERR(sclk_audio0)) {
+		printk(KERN_WARNING "%s: Cannot find sclk_audio.\n",
+				__func__);
+		ret = -EINVAL;
+		goto out2;
+	}
+
+	sclk_spdif = clk_get(NULL, "sclk_spdif");
+	if (IS_ERR(sclk_spdif)) {
+		printk(KERN_WARNING "%s: Cannot find sclk_spdif.\n",
+				__func__);
+		ret = -EINVAL;
+		goto out3;
+	}
+
+	/* Set audio clock hierarchy for S/PDIF */
+	clk_set_parent(mout_epll, fout_epll);
+	clk_set_parent(sclk_audio0, mout_epll);
+	clk_set_parent(sclk_spdif, sclk_audio0);
+
+	clk_put(sclk_spdif);
+out3:
+	clk_put(sclk_audio0);
+out2:
+	clk_put(mout_epll);
+out1:
+	clk_put(fout_epll);
+
+	return ret;
+}
+
+/* We should haved to set clock directly on this part because of clock
+ * scheme of Samsudng SoCs did not support to set rates from abstrct
+ * clock of it's hierarchy.
+ */
+static int set_audio_clock_rate(unsigned long epll_rate,
+				unsigned long audio_rate)
+{
+	struct clk *fout_epll, *sclk_spdif;
+
+	fout_epll = clk_get(NULL, "fout_epll");
+	if (IS_ERR(fout_epll)) {
+		printk(KERN_ERR "%s: failed to get fout_epll\n", __func__);
+		return -ENOENT;
+	}
+
+	clk_set_rate(fout_epll, epll_rate);
+	clk_put(fout_epll);
+
+	sclk_spdif = clk_get(NULL, "sclk_spdif");
+	if (IS_ERR(sclk_spdif)) {
+		printk(KERN_ERR "%s: failed to get sclk_spdif\n", __func__);
+		return -ENOENT;
+	}
+
+	clk_set_rate(sclk_spdif, audio_rate);
+	clk_put(sclk_spdif);
+
+	return 0;
+}
+
+static int smdk_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	unsigned long pll_out, rclk_rate;
+	int ret, ratio;
+
+	switch (params_rate(params)) {
+	case 44100:
+		pll_out = 45158400;
+		break;
+	case 32000:
+	case 48000:
+	case 96000:
+		pll_out = 49152000;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* Setting ratio to 512fs helps to use S/PDIF with HDMI without
+	 * modify S/PDIF ASoC machine driver.
+	 */
+	ratio = 512;
+	rclk_rate = params_rate(params) * ratio;
+
+	/* Set audio source clock rates */
+	ret = set_audio_clock_rate(pll_out, rclk_rate);
+	if (ret < 0)
+		return ret;
+
+	/* Set S/PDIF uses internal source clock */
+	ret = snd_soc_dai_set_sysclk(cpu_dai, SND_SOC_SPDIF_INT_MCLK,
+					rclk_rate, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	return ret;
+}
+
+static const struct snd_soc_ops smdk_spdif_ops = {
+	.hw_params = smdk_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(spdif,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-spdif")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("spdif-dit", "dit-hifi")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-spdif")));
+
+static struct snd_soc_dai_link smdk_dai = {
+	.name = "S/PDIF",
+	.stream_name = "S/PDIF PCM Playback",
+	.ops = &smdk_spdif_ops,
+	SND_SOC_DAILINK_REG(spdif),
+};
+
+static struct snd_soc_card smdk = {
+	.name = "SMDK-S/PDIF",
+	.owner = THIS_MODULE,
+	.dai_link = &smdk_dai,
+	.num_links = 1,
+};
+
+static struct platform_device *smdk_snd_spdif_dit_device;
+static struct platform_device *smdk_snd_spdif_device;
+
+static int __init smdk_init(void)
+{
+	int ret;
+
+	smdk_snd_spdif_dit_device = platform_device_alloc("spdif-dit", -1);
+	if (!smdk_snd_spdif_dit_device)
+		return -ENOMEM;
+
+	ret = platform_device_add(smdk_snd_spdif_dit_device);
+	if (ret)
+		goto err1;
+
+	smdk_snd_spdif_device = platform_device_alloc("soc-audio", -1);
+	if (!smdk_snd_spdif_device) {
+		ret = -ENOMEM;
+		goto err2;
+	}
+
+	platform_set_drvdata(smdk_snd_spdif_device, &smdk);
+
+	ret = platform_device_add(smdk_snd_spdif_device);
+	if (ret)
+		goto err3;
+
+	/* Set audio clock hierarchy manually */
+	ret = set_audio_clock_heirachy(smdk_snd_spdif_device);
+	if (ret)
+		goto err4;
+
+	return 0;
+err4:
+	platform_device_del(smdk_snd_spdif_device);
+err3:
+	platform_device_put(smdk_snd_spdif_device);
+err2:
+	platform_device_del(smdk_snd_spdif_dit_device);
+err1:
+	platform_device_put(smdk_snd_spdif_dit_device);
+	return ret;
+}
+
+static void __exit smdk_exit(void)
+{
+	platform_device_unregister(smdk_snd_spdif_device);
+	platform_device_unregister(smdk_snd_spdif_dit_device);
+}
+
+module_init(smdk_init);
+module_exit(smdk_exit);
+
+MODULE_AUTHOR("Seungwhan Youn, <sw.youn@samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC SMDK+S/PDIF");
+MODULE_LICENSE("GPL");

linux-7.2.3/sound/soc/samsung/smdk_wm8994.c

@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "../codecs/wm8994.h"
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+ /*
+  * Default CFG switch settings to use this driver:
+  *	SMDKV310: CFG5-1000, CFG7-111111
+  */
+
+ /*
+  * Configure audio route as :-
+  * $ amixer sset 'DAC1' on,on
+  * $ amixer sset 'Right Headphone Mux' 'DAC'
+  * $ amixer sset 'Left Headphone Mux' 'DAC'
+  * $ amixer sset 'DAC1R Mixer AIF1.1' on
+  * $ amixer sset 'DAC1L Mixer AIF1.1' on
+  * $ amixer sset 'IN2L' on
+  * $ amixer sset 'IN2L PGA IN2LN' on
+  * $ amixer sset 'MIXINL IN2L' on
+  * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
+  * $ amixer sset 'IN2R' on
+  * $ amixer sset 'IN2R PGA IN2RN' on
+  * $ amixer sset 'MIXINR IN2R' on
+  * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
+  */
+
+/* SMDK has a 16.934MHZ crystal attached to WM8994 */
+#define SMDK_WM8994_FREQ 16934000
+
+static int smdk_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,
+					SMDK_WM8994_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;
+}
+
+/*
+ * SMDK WM8994 DAI operations.
+ */
+static const struct snd_soc_ops smdk_ops = {
+	.hw_params = smdk_hw_params,
+};
+
+static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(rtd->card);
+
+	/* Other pins NC */
+	snd_soc_dapm_disable_pin(dapm, "HPOUT2P");
+	snd_soc_dapm_disable_pin(dapm, "HPOUT2N");
+	snd_soc_dapm_disable_pin(dapm, "SPKOUTLN");
+	snd_soc_dapm_disable_pin(dapm, "SPKOUTLP");
+	snd_soc_dapm_disable_pin(dapm, "SPKOUTRP");
+	snd_soc_dapm_disable_pin(dapm, "SPKOUTRN");
+	snd_soc_dapm_disable_pin(dapm, "LINEOUT1N");
+	snd_soc_dapm_disable_pin(dapm, "LINEOUT1P");
+	snd_soc_dapm_disable_pin(dapm, "LINEOUT2N");
+	snd_soc_dapm_disable_pin(dapm, "LINEOUT2P");
+	snd_soc_dapm_disable_pin(dapm, "IN1LP");
+	snd_soc_dapm_disable_pin(dapm, "IN2LP:VXRN");
+	snd_soc_dapm_disable_pin(dapm, "IN1RP");
+	snd_soc_dapm_disable_pin(dapm, "IN2RP:VXRP");
+
+	return 0;
+}
+
+SND_SOC_DAILINK_DEFS(aif1,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(fifo_tx,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
+
+static struct snd_soc_dai_link smdk_dai[] = {
+	{ /* Primary DAI i/f */
+		.name = "WM8994 AIF1",
+		.stream_name = "Pri_Dai",
+		.init = smdk_wm8994_init_paiftx,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBP_CFP,
+		.ops = &smdk_ops,
+		SND_SOC_DAILINK_REG(aif1),
+	}, { /* Sec_Fifo Playback i/f */
+		.name = "Sec_FIFO TX",
+		.stream_name = "Sec_Dai",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBP_CFP,
+		.ops = &smdk_ops,
+		SND_SOC_DAILINK_REG(fifo_tx),
+	},
+};
+
+static struct snd_soc_card smdk = {
+	.name = "SMDK-I2S",
+	.owner = THIS_MODULE,
+	.dai_link = smdk_dai,
+	.num_links = ARRAY_SIZE(smdk_dai),
+};
+
+static const struct of_device_id samsung_wm8994_of_match[] = {
+	{ .compatible = "samsung,smdk-wm8994" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
+
+static int smdk_audio_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct device_node *np = pdev->dev.of_node;
+	struct snd_soc_card *card = &smdk;
+
+	card->dev = &pdev->dev;
+
+	if (np) {
+		smdk_dai[0].cpus->dai_name = NULL;
+		smdk_dai[0].cpus->of_node = of_parse_phandle(np,
+				"samsung,i2s-controller", 0);
+		if (!smdk_dai[0].cpus->of_node) {
+			dev_err(&pdev->dev,
+			   "Property 'samsung,i2s-controller' missing or invalid\n");
+			ret = -EINVAL;
+			return ret;
+		}
+
+		smdk_dai[0].platforms->name = NULL;
+		smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
+	}
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+
+	if (ret)
+		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
+
+	return ret;
+}
+
+static struct platform_driver smdk_audio_driver = {
+	.driver		= {
+		.name	= "smdk-audio-wm8994",
+		.of_match_table = samsung_wm8994_of_match,
+		.pm	= &snd_soc_pm_ops,
+	},
+	.probe		= smdk_audio_probe,
+};
+
+module_platform_driver(smdk_audio_driver);
+
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:smdk-audio-wm8994");

linux-7.2.3/sound/soc/samsung/smdk_wm8994pcm.c

@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright (c) 2011 Samsung Electronics Co., Ltd
+//		http://www.samsung.com
+
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+#include "../codecs/wm8994.h"
+#include "pcm.h"
+
+/*
+ * Board Settings:
+ *  o '1' means 'ON'
+ *  o '0' means 'OFF'
+ *  o 'X' means 'Don't care'
+ *
+ * SMDKC210, SMDKV310: CFG3- 1001, CFG5-1000, CFG7-111111
+ */
+
+/*
+ * Configure audio route as :-
+ * $ amixer sset 'DAC1' on,on
+ * $ amixer sset 'Right Headphone Mux' 'DAC'
+ * $ amixer sset 'Left Headphone Mux' 'DAC'
+ * $ amixer sset 'DAC1R Mixer AIF1.1' on
+ * $ amixer sset 'DAC1L Mixer AIF1.1' on
+ * $ amixer sset 'IN2L' on
+ * $ amixer sset 'IN2L PGA IN2LN' on
+ * $ amixer sset 'MIXINL IN2L' on
+ * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
+ * $ amixer sset 'IN2R' on
+ * $ amixer sset 'IN2R PGA IN2RN' on
+ * $ amixer sset 'MIXINR IN2R' on
+ * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
+ */
+
+/* SMDK has a 16.9344MHZ crystal attached to WM8994 */
+#define SMDK_WM8994_FREQ 16934400
+
+static int smdk_wm8994_pcm_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);
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	unsigned long mclk_freq;
+	int rfs, ret;
+
+	switch(params_rate(params)) {
+	case 8000:
+		rfs = 512;
+		break;
+	default:
+		dev_err(cpu_dai->dev, "%s:%d Sampling Rate %u not supported!\n",
+		__func__, __LINE__, params_rate(params));
+		return -EINVAL;
+	}
+
+	mclk_freq = params_rate(params) * rfs;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
+					mclk_freq, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+					SMDK_WM8994_FREQ, mclk_freq);
+	if (ret < 0)
+		return ret;
+
+	/* Set PCM source clock on CPU */
+	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX,
+					mclk_freq, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	/* Set SCLK_DIV for making bclk */
+	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct snd_soc_ops smdk_wm8994_pcm_ops = {
+	.hw_params = smdk_wm8994_pcm_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(paif_pcm,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-pcm.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-pcm.0")));
+
+static struct snd_soc_dai_link smdk_dai[] = {
+	{
+		.name = "WM8994 PAIF PCM",
+		.stream_name = "Primary PCM",
+		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF |
+			   SND_SOC_DAIFMT_CBC_CFC,
+		.ops = &smdk_wm8994_pcm_ops,
+		SND_SOC_DAILINK_REG(paif_pcm),
+	},
+};
+
+static struct snd_soc_card smdk_pcm = {
+	.name = "SMDK-PCM",
+	.owner = THIS_MODULE,
+	.dai_link = smdk_dai,
+	.num_links = 1,
+};
+
+static int snd_smdk_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	smdk_pcm.dev = &pdev->dev;
+	ret = devm_snd_soc_register_card(&pdev->dev, &smdk_pcm);
+	if (ret)
+		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
+
+	return ret;
+}
+
+static struct platform_driver snd_smdk_driver = {
+	.driver = {
+		.name = "samsung-smdk-pcm",
+	},
+	.probe = snd_smdk_probe,
+};
+
+module_platform_driver(snd_smdk_driver);
+
+MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC SMDK WM8994 for PCM");
+MODULE_LICENSE("GPL");

linux-7.2.3/sound/soc/samsung/snow.c

@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ASoC machine driver for Snow boards
+
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "i2s.h"
+
+#define FIN_PLL_RATE		24000000
+
+SND_SOC_DAILINK_DEFS(links,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+struct snow_priv {
+	struct snd_soc_dai_link dai_link;
+	struct clk *clk_i2s_bus;
+};
+
+static int snow_card_hw_params(struct snd_pcm_substream *substream,
+				      struct snd_pcm_hw_params *params)
+{
+	static const unsigned int pll_rate[] = {
+		73728000U, 67737602U, 49152000U, 45158401U, 32768001U
+	};
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct snow_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	int bfs, psr, rfs, bitwidth;
+	unsigned long int rclk;
+	long int freq = -EINVAL;
+	int ret, i;
+
+	bitwidth = snd_pcm_format_width(params_format(params));
+	if (bitwidth < 0) {
+		dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
+		return bitwidth;
+	}
+
+	if (bitwidth != 16 && bitwidth != 24) {
+		dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
+		return -EINVAL;
+	}
+
+	bfs = 2 * bitwidth;
+
+	switch (params_rate(params)) {
+	case 16000:
+	case 22050:
+	case 24000:
+	case 32000:
+	case 44100:
+	case 48000:
+	case 88200:
+	case 96000:
+		rfs = 8 * bfs;
+		break;
+	case 64000:
+		rfs = 384;
+		break;
+	case 8000:
+	case 11025:
+	case 12000:
+		rfs = 16 * bfs;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	rclk = params_rate(params) * rfs;
+
+	for (psr = 8; psr > 0; psr /= 2) {
+		for (i = 0; i < ARRAY_SIZE(pll_rate); i++) {
+			if ((pll_rate[i] - rclk * psr) <= 2) {
+				freq = pll_rate[i];
+				break;
+			}
+		}
+	}
+	if (freq < 0) {
+		dev_err(rtd->card->dev, "Unsupported RCLK rate: %lu\n", rclk);
+		return -EINVAL;
+	}
+
+	ret = clk_set_rate(priv->clk_i2s_bus, freq);
+	if (ret < 0) {
+		dev_err(rtd->card->dev, "I2S bus clock rate set failed\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_ops snow_card_ops = {
+	.hw_params = snow_card_hw_params,
+};
+
+static int snow_late_probe(struct snd_soc_card *card)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *codec_dai;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+
+	/* In the multi-codec case codec_dais 0 is MAX98095 and 1 is HDMI. */
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	/* Set the MCLK rate for the codec */
+	return snd_soc_dai_set_sysclk(codec_dai, 0,
+				FIN_PLL_RATE, SND_SOC_CLOCK_IN);
+}
+
+static struct snd_soc_card snow_snd = {
+	.name = "Snow-I2S",
+	.owner = THIS_MODULE,
+	.late_probe = snow_late_probe,
+};
+
+static int snow_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct snd_soc_card *card = &snow_snd;
+	struct device_node *cpu, *codec;
+	struct snd_soc_dai_link *link;
+	struct snow_priv *priv;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	link = &priv->dai_link;
+
+	link->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBC_CFC;
+
+	link->name = "Primary";
+	link->stream_name = link->name;
+
+	link->cpus = links_cpus;
+	link->num_cpus = ARRAY_SIZE(links_cpus);
+	link->codecs = links_codecs;
+	link->num_codecs = ARRAY_SIZE(links_codecs);
+	link->platforms = links_platforms;
+	link->num_platforms = ARRAY_SIZE(links_platforms);
+
+	card->dai_link = link;
+	card->num_links = 1;
+	card->dev = dev;
+
+	/* Try new DT bindings with HDMI support first. */
+	cpu = of_get_child_by_name(dev->of_node, "cpu");
+
+	if (cpu) {
+		link->ops = &snow_card_ops;
+
+		link->cpus->of_node = of_parse_phandle(cpu, "sound-dai", 0);
+		of_node_put(cpu);
+
+		if (!link->cpus->of_node) {
+			dev_err(dev, "Failed parsing cpu/sound-dai property\n");
+			return -EINVAL;
+		}
+
+		codec = of_get_child_by_name(dev->of_node, "codec");
+		ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
+		of_node_put(codec);
+
+		if (ret < 0) {
+			of_node_put(link->cpus->of_node);
+			dev_err(dev, "Failed parsing codec node\n");
+			return ret;
+		}
+
+		priv->clk_i2s_bus = of_clk_get_by_name(link->cpus->of_node,
+						       "i2s_opclk0");
+		if (IS_ERR(priv->clk_i2s_bus)) {
+			snd_soc_of_put_dai_link_codecs(link);
+			of_node_put(link->cpus->of_node);
+			return PTR_ERR(priv->clk_i2s_bus);
+		}
+	} else {
+		link->codecs->dai_name = "HiFi";
+
+		link->cpus->of_node = of_parse_phandle(dev->of_node,
+						"samsung,i2s-controller", 0);
+		if (!link->cpus->of_node) {
+			dev_err(dev, "i2s-controller property parse error\n");
+			return -EINVAL;
+		}
+
+		link->codecs->of_node = of_parse_phandle(dev->of_node,
+						"samsung,audio-codec", 0);
+		if (!link->codecs->of_node) {
+			of_node_put(link->cpus->of_node);
+			dev_err(dev, "audio-codec property parse error\n");
+			return -EINVAL;
+		}
+	}
+
+	link->platforms->of_node = link->cpus->of_node;
+
+	/* Update card-name if provided through DT, else use default name */
+	snd_soc_of_parse_card_name(card, "samsung,model");
+
+	snd_soc_card_set_drvdata(card, priv);
+
+	ret = devm_snd_soc_register_card(dev, card);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret,
+				     "snd_soc_register_card failed\n");
+
+	return 0;
+}
+
+static void snow_remove(struct platform_device *pdev)
+{
+	struct snow_priv *priv = platform_get_drvdata(pdev);
+	struct snd_soc_dai_link *link = &priv->dai_link;
+
+	of_node_put(link->cpus->of_node);
+	of_node_put(link->codecs->of_node);
+	snd_soc_of_put_dai_link_codecs(link);
+
+	clk_put(priv->clk_i2s_bus);
+}
+
+static const struct of_device_id snow_of_match[] = {
+	{ .compatible = "google,snow-audio-max98090", },
+	{ .compatible = "google,snow-audio-max98091", },
+	{ .compatible = "google,snow-audio-max98095", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, snow_of_match);
+
+static struct platform_driver snow_driver = {
+	.driver = {
+		.name = "snow-audio",
+		.pm = &snd_soc_pm_ops,
+		.of_match_table = snow_of_match,
+	},
+	.probe = snow_probe,
+	.remove = snow_remove,
+};
+
+module_platform_driver(snow_driver);
+
+MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
+MODULE_LICENSE("GPL");

linux-7.2.3/sound/soc/samsung/spdif.c

@@ -0,0 +1,462 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Audio Layer - Samsung S/PDIF Controller driver
+//
+// Copyright (c) 2010 Samsung Electronics Co. Ltd
+//		http://www.samsung.com/
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/module.h>
+
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include <linux/platform_data/asoc-s3c.h>
+
+#include "dma.h"
+#include "spdif.h"
+
+/* Registers */
+#define CLKCON				0x00
+#define CON				0x04
+#define BSTAS				0x08
+#define CSTAS				0x0C
+#define DATA_OUTBUF			0x10
+#define DCNT				0x14
+#define BSTAS_S				0x18
+#define DCNT_S				0x1C
+
+#define CLKCTL_MASK			0x7
+#define CLKCTL_MCLK_EXT			(0x1 << 2)
+#define CLKCTL_PWR_ON			(0x1 << 0)
+
+#define CON_MASK			0x3ffffff
+#define CON_FIFO_TH_SHIFT		19
+#define CON_FIFO_TH_MASK		(0x7 << 19)
+#define CON_USERDATA_23RDBIT		(0x1 << 12)
+
+#define CON_SW_RESET			(0x1 << 5)
+
+#define CON_MCLKDIV_MASK		(0x3 << 3)
+#define CON_MCLKDIV_256FS		(0x0 << 3)
+#define CON_MCLKDIV_384FS		(0x1 << 3)
+#define CON_MCLKDIV_512FS		(0x2 << 3)
+
+#define CON_PCM_MASK			(0x3 << 1)
+#define CON_PCM_16BIT			(0x0 << 1)
+#define CON_PCM_20BIT			(0x1 << 1)
+#define CON_PCM_24BIT			(0x2 << 1)
+
+#define CON_PCM_DATA			(0x1 << 0)
+
+#define CSTAS_MASK			0x3fffffff
+#define CSTAS_SAMP_FREQ_MASK		(0xF << 24)
+#define CSTAS_SAMP_FREQ_44		(0x0 << 24)
+#define CSTAS_SAMP_FREQ_48		(0x2 << 24)
+#define CSTAS_SAMP_FREQ_32		(0x3 << 24)
+#define CSTAS_SAMP_FREQ_96		(0xA << 24)
+
+#define CSTAS_CATEGORY_MASK		(0xFF << 8)
+#define CSTAS_CATEGORY_CODE_CDP		(0x01 << 8)
+
+#define CSTAS_NO_COPYRIGHT		(0x1 << 2)
+
+/**
+ * struct samsung_spdif_info - Samsung S/PDIF Controller information
+ * @lock: Spin lock for S/PDIF.
+ * @dev: The parent device passed to use from the probe.
+ * @regs: The pointer to the device register block.
+ * @clk_rate: Current clock rate for calcurate ratio.
+ * @pclk: The peri-clock pointer for spdif master operation.
+ * @sclk: The source clock pointer for making sync signals.
+ * @saved_clkcon: Backup clkcon reg. in suspend.
+ * @saved_con: Backup con reg. in suspend.
+ * @saved_cstas: Backup cstas reg. in suspend.
+ * @dma_playback: DMA information for playback channel.
+ */
+struct samsung_spdif_info {
+	spinlock_t	lock;
+	struct device	*dev;
+	void __iomem	*regs;
+	unsigned long	clk_rate;
+	struct clk	*pclk;
+	struct clk	*sclk;
+	u32		saved_clkcon;
+	u32		saved_con;
+	u32		saved_cstas;
+	struct snd_dmaengine_dai_dma_data *dma_playback;
+};
+
+static struct snd_dmaengine_dai_dma_data spdif_stereo_out;
+static struct samsung_spdif_info spdif_info;
+
+static inline struct samsung_spdif_info
+*component_to_info(struct snd_soc_component *component)
+{
+	return snd_soc_component_get_drvdata(component);
+}
+
+static inline struct samsung_spdif_info *to_info(struct snd_soc_dai *cpu_dai)
+{
+	return snd_soc_dai_get_drvdata(cpu_dai);
+}
+
+static void spdif_snd_txctrl(struct samsung_spdif_info *spdif, int on)
+{
+	void __iomem *regs = spdif->regs;
+	u32 clkcon;
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	clkcon = readl(regs + CLKCON) & CLKCTL_MASK;
+	if (on)
+		writel(clkcon | CLKCTL_PWR_ON, regs + CLKCON);
+	else
+		writel(clkcon & ~CLKCTL_PWR_ON, regs + CLKCON);
+}
+
+static int spdif_set_sysclk(struct snd_soc_dai *cpu_dai,
+				int clk_id, unsigned int freq, int dir)
+{
+	struct samsung_spdif_info *spdif = to_info(cpu_dai);
+	u32 clkcon;
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	clkcon = readl(spdif->regs + CLKCON);
+
+	if (clk_id == SND_SOC_SPDIF_INT_MCLK)
+		clkcon &= ~CLKCTL_MCLK_EXT;
+	else
+		clkcon |= CLKCTL_MCLK_EXT;
+
+	writel(clkcon, spdif->regs + CLKCON);
+
+	spdif->clk_rate = freq;
+
+	return 0;
+}
+
+static int spdif_trigger(struct snd_pcm_substream *substream, int cmd,
+				struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct samsung_spdif_info *spdif = to_info(snd_soc_rtd_to_cpu(rtd, 0));
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		scoped_guard(spinlock_irqsave, &spdif->lock)
+			spdif_snd_txctrl(spdif, 1);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		scoped_guard(spinlock_irqsave, &spdif->lock)
+			spdif_snd_txctrl(spdif, 0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int spdif_sysclk_ratios[] = {
+	512, 384, 256,
+};
+
+static int spdif_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params,
+				struct snd_soc_dai *socdai)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct samsung_spdif_info *spdif = to_info(snd_soc_rtd_to_cpu(rtd, 0));
+	void __iomem *regs = spdif->regs;
+	struct snd_dmaengine_dai_dma_data *dma_data;
+	u32 con, clkcon, cstas;
+	int i, ratio;
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dma_data = spdif->dma_playback;
+	else {
+		dev_err(spdif->dev, "Capture is not supported\n");
+		return -EINVAL;
+	}
+
+	snd_soc_dai_set_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream, dma_data);
+
+	guard(spinlock_irqsave)(&spdif->lock);
+
+	con = readl(regs + CON) & CON_MASK;
+	cstas = readl(regs + CSTAS) & CSTAS_MASK;
+	clkcon = readl(regs + CLKCON) & CLKCTL_MASK;
+
+	con &= ~CON_FIFO_TH_MASK;
+	con |= (0x7 << CON_FIFO_TH_SHIFT);
+	con |= CON_USERDATA_23RDBIT;
+	con |= CON_PCM_DATA;
+
+	con &= ~CON_PCM_MASK;
+	switch (params_width(params)) {
+	case 16:
+		con |= CON_PCM_16BIT;
+		break;
+	default:
+		dev_err(spdif->dev, "Unsupported data size.\n");
+		return -EINVAL;
+	}
+
+	ratio = spdif->clk_rate / params_rate(params);
+	for (i = 0; i < ARRAY_SIZE(spdif_sysclk_ratios); i++)
+		if (ratio == spdif_sysclk_ratios[i])
+			break;
+	if (i == ARRAY_SIZE(spdif_sysclk_ratios)) {
+		dev_err(spdif->dev, "Invalid clock ratio %ld/%d\n",
+				spdif->clk_rate, params_rate(params));
+		return -EINVAL;
+	}
+
+	con &= ~CON_MCLKDIV_MASK;
+	switch (ratio) {
+	case 256:
+		con |= CON_MCLKDIV_256FS;
+		break;
+	case 384:
+		con |= CON_MCLKDIV_384FS;
+		break;
+	case 512:
+		con |= CON_MCLKDIV_512FS;
+		break;
+	}
+
+	cstas &= ~CSTAS_SAMP_FREQ_MASK;
+	switch (params_rate(params)) {
+	case 44100:
+		cstas |= CSTAS_SAMP_FREQ_44;
+		break;
+	case 48000:
+		cstas |= CSTAS_SAMP_FREQ_48;
+		break;
+	case 32000:
+		cstas |= CSTAS_SAMP_FREQ_32;
+		break;
+	case 96000:
+		cstas |= CSTAS_SAMP_FREQ_96;
+		break;
+	default:
+		dev_err(spdif->dev, "Invalid sampling rate %d\n",
+				params_rate(params));
+		return -EINVAL;
+	}
+
+	cstas &= ~CSTAS_CATEGORY_MASK;
+	cstas |= CSTAS_CATEGORY_CODE_CDP;
+	cstas |= CSTAS_NO_COPYRIGHT;
+
+	writel(con, regs + CON);
+	writel(cstas, regs + CSTAS);
+	writel(clkcon, regs + CLKCON);
+
+	return 0;
+}
+
+static void spdif_shutdown(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct samsung_spdif_info *spdif = to_info(snd_soc_rtd_to_cpu(rtd, 0));
+	void __iomem *regs = spdif->regs;
+	u32 con, clkcon;
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	con = readl(regs + CON) & CON_MASK;
+	clkcon = readl(regs + CLKCON) & CLKCTL_MASK;
+
+	writel(con | CON_SW_RESET, regs + CON);
+	cpu_relax();
+
+	writel(clkcon & ~CLKCTL_PWR_ON, regs + CLKCON);
+}
+
+#ifdef CONFIG_PM
+static int spdif_suspend(struct snd_soc_component *component)
+{
+	struct samsung_spdif_info *spdif = component_to_info(component);
+	u32 con = spdif->saved_con;
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	spdif->saved_clkcon = readl(spdif->regs	+ CLKCON) & CLKCTL_MASK;
+	spdif->saved_con = readl(spdif->regs + CON) & CON_MASK;
+	spdif->saved_cstas = readl(spdif->regs + CSTAS) & CSTAS_MASK;
+
+	writel(con | CON_SW_RESET, spdif->regs + CON);
+	cpu_relax();
+
+	return 0;
+}
+
+static int spdif_resume(struct snd_soc_component *component)
+{
+	struct samsung_spdif_info *spdif = component_to_info(component);
+
+	dev_dbg(spdif->dev, "Entered %s\n", __func__);
+
+	writel(spdif->saved_clkcon, spdif->regs	+ CLKCON);
+	writel(spdif->saved_con, spdif->regs + CON);
+	writel(spdif->saved_cstas, spdif->regs + CSTAS);
+
+	return 0;
+}
+#else
+#define spdif_suspend NULL
+#define spdif_resume NULL
+#endif
+
+static const struct snd_soc_dai_ops spdif_dai_ops = {
+	.set_sysclk	= spdif_set_sysclk,
+	.trigger	= spdif_trigger,
+	.hw_params	= spdif_hw_params,
+	.shutdown	= spdif_shutdown,
+};
+
+static struct snd_soc_dai_driver samsung_spdif_dai = {
+	.name = "samsung-spdif",
+	.playback = {
+		.stream_name = "S/PDIF Playback",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = (SNDRV_PCM_RATE_32000 |
+				SNDRV_PCM_RATE_44100 |
+				SNDRV_PCM_RATE_48000 |
+				SNDRV_PCM_RATE_96000),
+		.formats = SNDRV_PCM_FMTBIT_S16_LE, },
+	.ops = &spdif_dai_ops,
+};
+
+static const struct snd_soc_component_driver samsung_spdif_component = {
+	.name			= "samsung-spdif",
+	.suspend		= spdif_suspend,
+	.resume			= spdif_resume,
+	.legacy_dai_naming	= 1,
+};
+
+static int spdif_probe(struct platform_device *pdev)
+{
+	struct s3c_audio_pdata *spdif_pdata;
+	struct resource *mem_res;
+	struct samsung_spdif_info *spdif;
+	dma_filter_fn filter;
+	int ret;
+
+	spdif_pdata = pdev->dev.platform_data;
+
+	dev_dbg(&pdev->dev, "Entered %s\n", __func__);
+
+	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mem_res) {
+		dev_err(&pdev->dev, "Unable to get register resource.\n");
+		return -ENXIO;
+	}
+
+	if (spdif_pdata && spdif_pdata->cfg_gpio
+			&& spdif_pdata->cfg_gpio(pdev)) {
+		dev_err(&pdev->dev, "Unable to configure GPIO pins\n");
+		return -EINVAL;
+	}
+
+	spdif = &spdif_info;
+	spdif->dev = &pdev->dev;
+
+	spin_lock_init(&spdif->lock);
+
+	spdif->pclk = devm_clk_get(&pdev->dev, "spdif");
+	if (IS_ERR(spdif->pclk)) {
+		dev_err(&pdev->dev, "failed to get peri-clock\n");
+		ret = -ENOENT;
+		goto err0;
+	}
+	ret = clk_prepare_enable(spdif->pclk);
+	if (ret)
+		goto err0;
+
+	spdif->sclk = devm_clk_get(&pdev->dev, "sclk_spdif");
+	if (IS_ERR(spdif->sclk)) {
+		dev_err(&pdev->dev, "failed to get internal source clock\n");
+		ret = -ENOENT;
+		goto err1;
+	}
+	ret = clk_prepare_enable(spdif->sclk);
+	if (ret)
+		goto err1;
+
+	spdif->regs = devm_ioremap_resource(&pdev->dev, mem_res);
+	if (IS_ERR(spdif->regs)) {
+		ret = PTR_ERR(spdif->regs);
+		goto err2;
+	}
+
+	spdif_stereo_out.addr_width = 2;
+	spdif_stereo_out.addr = mem_res->start + DATA_OUTBUF;
+	filter = NULL;
+	if (spdif_pdata) {
+		spdif_stereo_out.filter_data = spdif_pdata->dma_playback;
+		filter = spdif_pdata->dma_filter;
+	}
+	spdif->dma_playback = &spdif_stereo_out;
+
+	ret = samsung_asoc_dma_platform_register(&pdev->dev, filter,
+						 NULL, NULL, NULL);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register DMA: %d\n", ret);
+		goto err2;
+	}
+
+	dev_set_drvdata(&pdev->dev, spdif);
+
+	ret = devm_snd_soc_register_component(&pdev->dev,
+			&samsung_spdif_component, &samsung_spdif_dai, 1);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "fail to register dai\n");
+		goto err2;
+	}
+
+	return 0;
+err2:
+	clk_disable_unprepare(spdif->sclk);
+err1:
+	clk_disable_unprepare(spdif->pclk);
+err0:
+	return ret;
+}
+
+static void spdif_remove(struct platform_device *pdev)
+{
+	struct samsung_spdif_info *spdif = &spdif_info;
+
+	clk_disable_unprepare(spdif->sclk);
+	clk_disable_unprepare(spdif->pclk);
+}
+
+static struct platform_driver samsung_spdif_driver = {
+	.probe	= spdif_probe,
+	.remove = spdif_remove,
+	.driver	= {
+		.name	= "samsung-spdif",
+	},
+};
+
+module_platform_driver(samsung_spdif_driver);
+
+MODULE_AUTHOR("Seungwhan Youn, <sw.youn@samsung.com>");
+MODULE_DESCRIPTION("Samsung S/PDIF Controller Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:samsung-spdif");

linux-7.2.3/sound/soc/samsung/spdif.h

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ALSA SoC Audio Layer - Samsung S/PDIF Controller driver
+ *
+ * Copyright (c) 2010 Samsung Electronics Co. Ltd
+ *		http://www.samsung.com/
+ */
+
+#ifndef __SND_SOC_SAMSUNG_SPDIF_H
+#define __SND_SOC_SAMSUNG_SPDIF_H	__FILE__
+
+#define SND_SOC_SPDIF_INT_MCLK		0
+#define SND_SOC_SPDIF_EXT_MCLK		1
+
+#endif	/* __SND_SOC_SAMSUNG_SPDIF_H */

linux-7.2.3/sound/soc/samsung/speyside.c

@@ -0,0 +1,388 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Speyside audio support
+//
+// Copyright 2011 Wolfson Microelectronics
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+
+#include "../codecs/wm8996.h"
+#include "../codecs/wm9081.h"
+
+#define MCLK_AUDIO_RATE (512 * 48000)
+
+static int speyside_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;
+	struct snd_soc_dai *codec_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	if (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_STANDBY:
+		ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
+					     32768, SND_SOC_CLOCK_IN);
+		if (ret < 0)
+			return ret;
+
+		ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
+					  0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL\n");
+			return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int speyside_set_bias_level_post(struct snd_soc_card *card,
+					struct snd_soc_dapm_context *dapm,
+					enum snd_soc_bias_level level)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *codec_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	if (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_PREPARE:
+		if (snd_soc_dapm_get_bias_level(dapm) == SND_SOC_BIAS_STANDBY) {
+			ret = snd_soc_dai_set_pll(codec_dai, 0,
+						  WM8996_FLL_MCLK2,
+						  32768, MCLK_AUDIO_RATE);
+			if (ret < 0) {
+				pr_err("Failed to start FLL\n");
+				return ret;
+			}
+
+			ret = snd_soc_dai_set_sysclk(codec_dai,
+						     WM8996_SYSCLK_FLL,
+						     MCLK_AUDIO_RATE,
+						     SND_SOC_CLOCK_IN);
+			if (ret < 0)
+				return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_jack speyside_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin speyside_headset_pins[] = {
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static struct gpio_desc *speyside_hpsel_gpio;
+/* Default the headphone selection to active high */
+static int speyside_jack_polarity;
+
+static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
+				struct snd_soc_dapm_widget *sink)
+{
+	if (speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB1") == 0))
+		return 1;
+	if (!speyside_jack_polarity && (snd_soc_dapm_widget_name_cmp(source, "MICB2") == 0))
+		return 1;
+
+	return 0;
+}
+
+static void speyside_set_polarity(struct snd_soc_component *component,
+				  int polarity)
+{
+	speyside_jack_polarity = !polarity;
+	gpiod_direction_output(speyside_hpsel_gpio, speyside_jack_polarity);
+
+	/* Re-run DAPM to make sure we're using the correct mic bias */
+	snd_soc_dapm_sync(snd_soc_component_to_dapm(component));
+}
+
+static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
+	struct snd_soc_component *component = dai->component;
+	enum gpiod_flags flags;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
+	if (ret < 0)
+		return ret;
+
+	if (speyside_jack_polarity)
+		flags = GPIOD_OUT_HIGH;
+	else
+		flags = GPIOD_OUT_LOW;
+	speyside_hpsel_gpio = devm_gpiod_get(rtd->card->dev,
+					     "hp-sel",
+					     flags);
+	if (IS_ERR(speyside_hpsel_gpio))
+		return PTR_ERR(speyside_hpsel_gpio);
+
+	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset",
+					 SND_JACK_LINEOUT | SND_JACK_HEADSET |
+					 SND_JACK_BTN_0,
+					 &speyside_headset,
+					 speyside_headset_pins,
+					 ARRAY_SIZE(speyside_headset_pins));
+	if (ret)
+		return ret;
+
+	wm8996_detect(component, &speyside_headset, speyside_set_polarity);
+
+	return 0;
+}
+
+static int speyside_late_probe(struct snd_soc_card *card)
+{
+	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
+
+	snd_soc_dapm_ignore_suspend(dapm, "Headphone");
+	snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
+	snd_soc_dapm_ignore_suspend(dapm, "Main AMIC");
+	snd_soc_dapm_ignore_suspend(dapm, "Main DMIC");
+	snd_soc_dapm_ignore_suspend(dapm, "Main Speaker");
+	snd_soc_dapm_ignore_suspend(dapm, "WM1250 Output");
+	snd_soc_dapm_ignore_suspend(dapm, "WM1250 Input");
+
+	return 0;
+}
+
+static const struct snd_soc_pcm_stream dsp_codec_params = {
+	.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	.rate_min = 48000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+SND_SOC_DAILINK_DEFS(cpu_dsp,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("spi0.0", "wm0010-sdi1")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(dsp_codec,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm0010-sdi2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8996.1-001a", "wm8996-aif1")));
+
+SND_SOC_DAILINK_DEFS(baseband,
+	DAILINK_COMP_ARRAY(COMP_CPU("wm8996-aif2")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027", "wm1250-ev1")));
+
+static struct snd_soc_dai_link speyside_dai[] = {
+	{
+		.name = "CPU-DSP",
+		.stream_name = "CPU-DSP",
+		.init = speyside_wm0010_init,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		SND_SOC_DAILINK_REG(cpu_dsp),
+	},
+	{
+		.name = "DSP-CODEC",
+		.stream_name = "DSP-CODEC",
+		.init = speyside_wm8996_init,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.c2c_params = &dsp_codec_params,
+		.num_c2c_params = 1,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(dsp_codec),
+	},
+	{
+		.name = "Baseband",
+		.stream_name = "Baseband",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(baseband),
+	},
+};
+
+static int speyside_wm9081_init(struct snd_soc_component *component)
+{
+	/* At any time the WM9081 is active it will have this clock */
+	return snd_soc_component_set_sysclk(component, WM9081_SYSCLK_MCLK, 0,
+					MCLK_AUDIO_RATE, 0);
+}
+
+static struct snd_soc_aux_dev speyside_aux_dev[] = {
+	{
+		.dlc = COMP_AUX("wm9081.1-006c"),
+		.init = speyside_wm9081_init,
+	},
+};
+
+static struct snd_soc_codec_conf speyside_codec_conf[] = {
+	{
+		.dlc = COMP_CODEC_CONF("wm9081.1-006c"),
+		.name_prefix = "Sub",
+	},
+};
+
+static const struct snd_kcontrol_new controls[] = {
+	SOC_DAPM_PIN_SWITCH("Main Speaker"),
+	SOC_DAPM_PIN_SWITCH("Main DMIC"),
+	SOC_DAPM_PIN_SWITCH("Main AMIC"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+};
+
+static const struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+
+	SND_SOC_DAPM_SPK("Main Speaker", NULL),
+
+	SND_SOC_DAPM_MIC("Main AMIC", NULL),
+	SND_SOC_DAPM_MIC("Main DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+	{ "IN1RN", NULL, "MICB1" },
+	{ "IN1RP", NULL, "MICB1" },
+	{ "IN1RN", NULL, "MICB2" },
+	{ "IN1RP", NULL, "MICB2" },
+	{ "MICB1", NULL, "Headset Mic", speyside_get_micbias },
+	{ "MICB2", NULL, "Headset Mic", speyside_get_micbias },
+
+	{ "IN1LP", NULL, "MICB2" },
+	{ "IN1RN", NULL, "MICB1" },
+	{ "MICB2", NULL, "Main AMIC" },
+
+	{ "DMIC1DAT", NULL, "MICB1" },
+	{ "DMIC2DAT", NULL, "MICB1" },
+	{ "MICB1", NULL, "Main DMIC" },
+
+	{ "Headphone", NULL, "HPOUT1L" },
+	{ "Headphone", NULL, "HPOUT1R" },
+
+	{ "Sub IN1", NULL, "HPOUT2L" },
+	{ "Sub IN2", NULL, "HPOUT2R" },
+
+	{ "Main Speaker", NULL, "Sub SPKN" },
+	{ "Main Speaker", NULL, "Sub SPKP" },
+	{ "Main Speaker", NULL, "SPKDAT" },
+};
+
+static struct snd_soc_card speyside = {
+	.name = "Speyside",
+	.owner = THIS_MODULE,
+	.dai_link = speyside_dai,
+	.num_links = ARRAY_SIZE(speyside_dai),
+	.aux_dev = speyside_aux_dev,
+	.num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
+	.codec_conf = speyside_codec_conf,
+	.num_configs = ARRAY_SIZE(speyside_codec_conf),
+
+	.set_bias_level = speyside_set_bias_level,
+	.set_bias_level_post = speyside_set_bias_level_post,
+
+	.controls = controls,
+	.num_controls = ARRAY_SIZE(controls),
+	.dapm_widgets = widgets,
+	.num_dapm_widgets = ARRAY_SIZE(widgets),
+	.dapm_routes = audio_paths,
+	.num_dapm_routes = ARRAY_SIZE(audio_paths),
+	.fully_routed = true,
+
+	.late_probe = speyside_late_probe,
+};
+
+static struct gpiod_lookup_table wm8996_gpiod_table = {
+	/* Hardcoded device name in board file mach-crag6410.c */
+	.dev_id = "speyside",
+	.table = {
+		/*
+		 * This line was hardcoded to 214 in the global GPIO
+		 * number space, S3C GPIO macros seems top set the
+		 * wm8996 codec GPIO start offset to 212, so this will
+		 * be GPIO 214 - 212 = 2 on the wm8996.
+		 */
+		GPIO_LOOKUP("wm8996", 2, "hp-sel", GPIO_ACTIVE_HIGH),
+		{ },
+	},
+};
+
+static void speyside_gpiod_table_action(void *data)
+{
+	gpiod_remove_lookup_table(&wm8996_gpiod_table);
+}
+
+static int speyside_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &speyside;
+	int ret;
+
+	card->dev = &pdev->dev;
+
+	gpiod_add_lookup_table(&wm8996_gpiod_table);
+	ret = devm_add_action_or_reset(&pdev->dev, speyside_gpiod_table_action,
+				       NULL);
+	if (ret)
+		return ret;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret)
+		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
+
+	return ret;
+}
+
+static struct platform_driver speyside_driver = {
+	.driver = {
+		.name = "speyside",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = speyside_probe,
+};
+
+module_platform_driver(speyside_driver);
+
+MODULE_DESCRIPTION("Speyside audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:speyside");

linux-7.2.3/sound/soc/samsung/tm2_wm5110.c

@@ -0,0 +1,677 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd.
+//
+// Authors: Inha Song <ideal.song@samsung.com>
+//          Sylwester Nawrocki <s.nawrocki@samsung.com>
+
+#include <linux/clk.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "i2s.h"
+#include "../codecs/wm5110.h"
+
+/*
+ * The source clock is XCLKOUT with its mux set to the external fixed rate
+ * oscillator (XXTI).
+ */
+#define MCLK_RATE	24000000U
+
+#define TM2_DAI_AIF1	0
+#define TM2_DAI_AIF2	1
+
+struct tm2_machine_priv {
+	struct snd_soc_component *component;
+	unsigned int sysclk_rate;
+	struct gpio_desc *gpio_mic_bias;
+};
+
+static int tm2_start_sysclk(struct snd_soc_card *card)
+{
+	struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+	struct snd_soc_component *component = priv->component;
+	int ret;
+
+	ret = snd_soc_component_set_pll(component, WM5110_FLL1_REFCLK,
+				    ARIZONA_FLL_SRC_MCLK1,
+				    MCLK_RATE,
+				    priv->sysclk_rate);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to set FLL1 source: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_pll(component, WM5110_FLL1,
+				    ARIZONA_FLL_SRC_MCLK1,
+				    MCLK_RATE,
+				    priv->sysclk_rate);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to start FLL1: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
+				       ARIZONA_CLK_SRC_FLL1,
+				       priv->sysclk_rate,
+				       SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to set SYSCLK source: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tm2_stop_sysclk(struct snd_soc_card *card)
+{
+	struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+	struct snd_soc_component *component = priv->component;
+	int ret;
+
+	ret = snd_soc_component_set_pll(component, WM5110_FLL1, 0, 0, 0);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to stop FLL1: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
+				       ARIZONA_CLK_SRC_FLL1, 0, 0);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to stop SYSCLK: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tm2_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);
+	struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+
+	switch (params_rate(params)) {
+	case 4000:
+	case 8000:
+	case 12000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+	case 96000:
+	case 192000:
+		/* Highest possible SYSCLK frequency: 147.456MHz */
+		priv->sysclk_rate = 147456000U;
+		break;
+	case 11025:
+	case 22050:
+	case 44100:
+	case 88200:
+	case 176400:
+		/* Highest possible SYSCLK frequency: 135.4752 MHz */
+		priv->sysclk_rate = 135475200U;
+		break;
+	default:
+		dev_err(component->dev, "Not supported sample rate: %d\n",
+			params_rate(params));
+		return -EINVAL;
+	}
+
+	return tm2_start_sysclk(rtd->card);
+}
+
+static const struct snd_soc_ops tm2_aif1_ops = {
+	.hw_params = tm2_aif1_hw_params,
+};
+
+static int tm2_aif2_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_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	unsigned int asyncclk_rate;
+	int ret;
+
+	switch (params_rate(params)) {
+	case 8000:
+	case 12000:
+	case 16000:
+		/* Highest possible ASYNCCLK frequency: 49.152MHz */
+		asyncclk_rate = 49152000U;
+		break;
+	case 11025:
+		/* Highest possible ASYNCCLK frequency: 45.1584 MHz */
+		asyncclk_rate = 45158400U;
+		break;
+	default:
+		dev_err(component->dev, "Not supported sample rate: %d\n",
+			params_rate(params));
+		return -EINVAL;
+	}
+
+	ret = snd_soc_component_set_pll(component, WM5110_FLL2_REFCLK,
+				    ARIZONA_FLL_SRC_MCLK1,
+				    MCLK_RATE,
+				    asyncclk_rate);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to set FLL2 source: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_pll(component, WM5110_FLL2,
+				    ARIZONA_FLL_SRC_MCLK1,
+				    MCLK_RATE,
+				    asyncclk_rate);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to start FLL2: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_ASYNCCLK,
+				       ARIZONA_CLK_SRC_FLL2,
+				       asyncclk_rate,
+				       SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to set ASYNCCLK source: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tm2_aif2_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	int ret;
+
+	/* disable FLL2 */
+	ret = snd_soc_component_set_pll(component, WM5110_FLL2, ARIZONA_FLL_SRC_MCLK1,
+				    0, 0);
+	if (ret < 0)
+		dev_err(component->dev, "Failed to stop FLL2: %d\n", ret);
+
+	return ret;
+}
+
+static const struct snd_soc_ops tm2_aif2_ops = {
+	.hw_params = tm2_aif2_hw_params,
+	.hw_free = tm2_aif2_hw_free,
+};
+
+static int tm2_hdmi_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	unsigned int bfs;
+	int bitwidth, ret;
+
+	bitwidth = snd_pcm_format_width(params_format(params));
+	if (bitwidth < 0) {
+		dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
+		return bitwidth;
+	}
+
+	switch (bitwidth) {
+	case 48:
+		bfs = 64;
+		break;
+	case 16:
+		bfs = 32;
+		break;
+	default:
+		dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
+		return -EINVAL;
+	}
+
+	switch (params_rate(params)) {
+	case 48000:
+	case 96000:
+	case 192000:
+		break;
+	default:
+		dev_err(rtd->card->dev, "Unsupported sample rate: %d\n",
+			params_rate(params));
+		return -EINVAL;
+	}
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
+					0, SAMSUNG_I2S_OPCLK_PCLK);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct snd_soc_ops tm2_hdmi_ops = {
+	.hw_params = tm2_hdmi_hw_params,
+};
+
+static int tm2_mic_bias(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 tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		gpiod_set_value_cansleep(priv->gpio_mic_bias,  1);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		gpiod_set_value_cansleep(priv->gpio_mic_bias,  0);
+		break;
+	}
+
+	return 0;
+}
+
+static int tm2_set_bias_level(struct snd_soc_card *card,
+				struct snd_soc_dapm_context *dapm,
+				enum snd_soc_bias_level level)
+{
+	struct snd_soc_dapm_context *card_dapm = snd_soc_card_to_dapm(card);
+	struct snd_soc_pcm_runtime *rtd;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+
+	if (snd_soc_dapm_to_dev(dapm) != snd_soc_rtd_to_codec(rtd, 0)->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_STANDBY:
+		if (snd_soc_dapm_get_bias_level(card_dapm) == SND_SOC_BIAS_OFF)
+			tm2_start_sysclk(card);
+		break;
+	case SND_SOC_BIAS_OFF:
+		tm2_stop_sysclk(card);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_aux_dev tm2_speaker_amp_dev;
+
+static int tm2_late_probe(struct snd_soc_card *card)
+{
+	struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
+	unsigned int ch_map[] = { 0, 1 };
+	struct snd_soc_dai *amp_pdm_dai;
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *aif1_dai;
+	struct snd_soc_dai *aif2_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF1]);
+	aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
+	priv->component = snd_soc_rtd_to_codec(rtd, 0)->component;
+
+	ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
+	if (ret < 0) {
+		dev_err(aif1_dai->dev, "Failed to set SYSCLK: %d\n", ret);
+		return ret;
+	}
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF2]);
+	aif2_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
+	if (ret < 0) {
+		dev_err(aif2_dai->dev, "Failed to set ASYNCCLK: %d\n", ret);
+		return ret;
+	}
+
+	amp_pdm_dai = snd_soc_find_dai(&tm2_speaker_amp_dev.dlc);
+	if (!amp_pdm_dai)
+		return -ENODEV;
+
+	/* Set the MAX98504 V/I sense PDM Tx DAI channel mapping */
+	ret = snd_soc_dai_set_channel_map(amp_pdm_dai, ARRAY_SIZE(ch_map),
+					  ch_map, 0, NULL);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_tdm_slot(amp_pdm_dai, 0x3, 0x0, 2, 16);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new tm2_controls[] = {
+	SOC_DAPM_PIN_SWITCH("HP"),
+	SOC_DAPM_PIN_SWITCH("SPK"),
+	SOC_DAPM_PIN_SWITCH("RCV"),
+	SOC_DAPM_PIN_SWITCH("VPS"),
+	SOC_DAPM_PIN_SWITCH("HDMI"),
+
+	SOC_DAPM_PIN_SWITCH("Main Mic"),
+	SOC_DAPM_PIN_SWITCH("Sub Mic"),
+	SOC_DAPM_PIN_SWITCH("Third Mic"),
+
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+};
+
+static const struct snd_soc_dapm_widget tm2_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("HP", NULL),
+	SND_SOC_DAPM_SPK("SPK", NULL),
+	SND_SOC_DAPM_SPK("RCV", NULL),
+	SND_SOC_DAPM_LINE("VPS", NULL),
+	SND_SOC_DAPM_LINE("HDMI", NULL),
+
+	SND_SOC_DAPM_MIC("Main Mic", tm2_mic_bias),
+	SND_SOC_DAPM_MIC("Sub Mic", NULL),
+	SND_SOC_DAPM_MIC("Third Mic", NULL),
+
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+};
+
+static const struct snd_soc_component_driver tm2_component = {
+	.name	= "tm2-audio",
+};
+
+static struct snd_soc_dai_driver tm2_ext_dai[] = {
+	{
+		.name = "Voice call",
+		.playback = {
+			.channels_min = 1,
+			.channels_max = 4,
+			.rate_min = 8000,
+			.rate_max = 48000,
+			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
+					SNDRV_PCM_RATE_48000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.capture = {
+			.channels_min = 1,
+			.channels_max = 4,
+			.rate_min = 8000,
+			.rate_max = 48000,
+			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
+					SNDRV_PCM_RATE_48000),
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+	},
+	{
+		.name = "Bluetooth",
+		.playback = {
+			.channels_min = 1,
+			.channels_max = 4,
+			.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,
+		},
+	},
+};
+
+SND_SOC_DAILINK_DEFS(aif1,
+	DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif1")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(voice,
+	DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif2")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(bt,
+	DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif3")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(hdmi,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link tm2_dai_links[] = {
+	{
+		.name		= "WM5110 AIF1",
+		.stream_name	= "HiFi Primary",
+		.ops		= &tm2_aif1_ops,
+		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBP_CFP,
+		SND_SOC_DAILINK_REG(aif1),
+	}, {
+		.name		= "WM5110 Voice",
+		.stream_name	= "Voice call",
+		.ops		= &tm2_aif2_ops,
+		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(voice),
+	}, {
+		.name		= "WM5110 BT",
+		.stream_name	= "Bluetooth",
+		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBP_CFP,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(bt),
+	}, {
+		.name		= "HDMI",
+		.stream_name	= "i2s1",
+		.ops		= &tm2_hdmi_ops,
+		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBC_CFC,
+		SND_SOC_DAILINK_REG(hdmi),
+	}
+};
+
+static struct snd_soc_card tm2_card = {
+	.owner			= THIS_MODULE,
+
+	.dai_link		= tm2_dai_links,
+	.controls		= tm2_controls,
+	.num_controls		= ARRAY_SIZE(tm2_controls),
+	.dapm_widgets		= tm2_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(tm2_dapm_widgets),
+	.aux_dev		= &tm2_speaker_amp_dev,
+	.num_aux_devs		= 1,
+
+	.late_probe		= tm2_late_probe,
+	.set_bias_level		= tm2_set_bias_level,
+};
+
+static int tm2_probe(struct platform_device *pdev)
+{
+	struct device_node *cpu_dai_node[2] = {};
+	struct device_node *codec_dai_node[2] = {};
+	const char *cells_name = NULL;
+	struct device *dev = &pdev->dev;
+	struct snd_soc_card *card = &tm2_card;
+	struct tm2_machine_priv *priv;
+	struct snd_soc_dai_link *dai_link;
+	int num_codecs, 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_mic_bias = devm_gpiod_get(dev, "mic-bias", GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->gpio_mic_bias)) {
+		dev_err(dev, "Failed to get mic bias gpio\n");
+		return PTR_ERR(priv->gpio_mic_bias);
+	}
+
+	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) {
+		/* Backwards compatible way */
+		ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
+		if (ret < 0) {
+			dev_err(dev, "Audio routing is not specified or invalid\n");
+			return ret;
+		}
+	}
+
+	card->aux_dev[0].dlc.of_node = of_parse_phandle(dev->of_node,
+							"audio-amplifier", 0);
+	if (!card->aux_dev[0].dlc.of_node) {
+		dev_err(dev, "audio-amplifier property invalid or missing\n");
+		return -EINVAL;
+	}
+
+	num_codecs = of_count_phandle_with_args(dev->of_node, "audio-codec",
+						 NULL);
+
+	/* Skip the HDMI link if not specified in DT */
+	if (num_codecs > 1) {
+		card->num_links = ARRAY_SIZE(tm2_dai_links);
+		cells_name = "#sound-dai-cells";
+	} else {
+		card->num_links = ARRAY_SIZE(tm2_dai_links) - 1;
+	}
+
+	for (i = 0; i < num_codecs; i++) {
+		struct of_phandle_args args;
+
+		ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller",
+						 cells_name, i, &args);
+		if (ret) {
+			dev_err(dev, "i2s-controller property parse error: %d\n", i);
+			ret = -EINVAL;
+			goto dai_node_put;
+		}
+		cpu_dai_node[i] = args.np;
+
+		codec_dai_node[i] = of_parse_phandle(dev->of_node,
+						     "audio-codec", i);
+		if (!codec_dai_node[i]) {
+			dev_err(dev, "audio-codec property parse error\n");
+			ret = -EINVAL;
+			goto dai_node_put;
+		}
+	}
+
+	/* Initialize WM5110 - I2S and HDMI - I2S1 DAI links */
+	for_each_card_prelinks(card, i, dai_link) {
+		unsigned int dai_index = 0; /* WM5110 */
+
+		dai_link->cpus->name = NULL;
+		dai_link->platforms->name = NULL;
+
+		if (num_codecs > 1 && i == card->num_links - 1)
+			dai_index = 1; /* HDMI */
+
+		dai_link->codecs->of_node = codec_dai_node[dai_index];
+		dai_link->cpus->of_node = cpu_dai_node[dai_index];
+		dai_link->platforms->of_node = cpu_dai_node[dai_index];
+	}
+
+	if (num_codecs > 1) {
+		struct of_phandle_args args;
+
+		/* HDMI DAI link (I2S1) */
+		i = card->num_links - 1;
+
+		ret = of_parse_phandle_with_fixed_args(dev->of_node,
+						"audio-codec", 0, 1, &args);
+		if (ret) {
+			dev_err(dev, "audio-codec property parse error\n");
+			goto dai_node_put;
+		}
+
+		ret = snd_soc_get_dai_name(&args, &card->dai_link[i].codecs->dai_name);
+		if (ret) {
+			dev_err(dev, "Unable to get codec_dai_name\n");
+			goto dai_node_put;
+		}
+	}
+
+	ret = devm_snd_soc_register_component(dev, &tm2_component,
+				tm2_ext_dai, ARRAY_SIZE(tm2_ext_dai));
+	if (ret < 0) {
+		dev_err(dev, "Failed to register component: %d\n", ret);
+		goto dai_node_put;
+	}
+
+	ret = devm_snd_soc_register_card(dev, card);
+	if (ret < 0) {
+		dev_err_probe(dev, ret, "Failed to register card\n");
+		goto dai_node_put;
+	}
+
+dai_node_put:
+	for (i = 0; i < num_codecs; i++) {
+		of_node_put(codec_dai_node[i]);
+		of_node_put(cpu_dai_node[i]);
+	}
+
+	of_node_put(card->aux_dev[0].dlc.of_node);
+
+	return ret;
+}
+
+static int tm2_pm_prepare(struct device *dev)
+{
+	struct snd_soc_card *card = dev_get_drvdata(dev);
+
+	return tm2_stop_sysclk(card);
+}
+
+static void tm2_pm_complete(struct device *dev)
+{
+	struct snd_soc_card *card = dev_get_drvdata(dev);
+
+	tm2_start_sysclk(card);
+}
+
+static const struct dev_pm_ops tm2_pm_ops = {
+	.prepare	= tm2_pm_prepare,
+	.suspend	= snd_soc_suspend,
+	.resume		= snd_soc_resume,
+	.complete	= tm2_pm_complete,
+	.freeze		= snd_soc_suspend,
+	.thaw		= snd_soc_resume,
+	.poweroff	= snd_soc_poweroff,
+	.restore	= snd_soc_resume,
+};
+
+static const struct of_device_id tm2_of_match[] = {
+	{ .compatible = "samsung,tm2-audio" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, tm2_of_match);
+
+static struct platform_driver tm2_driver = {
+	.driver = {
+		.name		= "tm2-audio",
+		.pm		= &tm2_pm_ops,
+		.of_match_table	= tm2_of_match,
+	},
+	.probe	= tm2_probe,
+};
+module_platform_driver(tm2_driver);
+
+MODULE_AUTHOR("Inha Song <ideal.song@samsung.com>");
+MODULE_DESCRIPTION("ALSA SoC Exynos TM2 Audio Support");
+MODULE_LICENSE("GPL v2");

linux-7.2.3/sound/soc/samsung/tobermory.c

@@ -0,0 +1,248 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Tobermory audio support
+//
+// Copyright 2011 Wolfson Microelectronics
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/module.h>
+
+#include "../codecs/wm8962.h"
+
+static int sample_rate = 44100;
+
+static int tobermory_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;
+	struct snd_soc_dai *codec_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	if (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_PREPARE:
+		if (snd_soc_dapm_get_bias_level(dapm) == SND_SOC_BIAS_STANDBY) {
+			ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
+						  WM8962_FLL_MCLK, 32768,
+						  sample_rate * 512);
+			if (ret < 0)
+				pr_err("Failed to start FLL: %d\n", ret);
+
+			ret = snd_soc_dai_set_sysclk(codec_dai,
+						     WM8962_SYSCLK_FLL,
+						     sample_rate * 512,
+						     SND_SOC_CLOCK_IN);
+			if (ret < 0) {
+				pr_err("Failed to set SYSCLK: %d\n", ret);
+				snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
+						    0, 0, 0);
+				return ret;
+			}
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int tobermory_set_bias_level_post(struct snd_soc_card *card,
+					       struct snd_soc_dapm_context *dapm,
+					       enum snd_soc_bias_level level)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai *codec_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	if (snd_soc_dapm_to_dev(dapm) != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_STANDBY:
+		ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
+					     32768, SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			pr_err("Failed to switch away from FLL: %d\n", ret);
+			return ret;
+		}
+
+		ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
+					  0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL: %d\n", ret);
+			return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int tobermory_hw_params(struct snd_pcm_substream *substream,
+			      struct snd_pcm_hw_params *params)
+{
+	sample_rate = params_rate(params);
+
+	return 0;
+}
+
+static const struct snd_soc_ops tobermory_ops = {
+	.hw_params = tobermory_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(cpu,
+	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8962.1-001a", "wm8962")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+static struct snd_soc_dai_link tobermory_dai[] = {
+	{
+		.name = "CPU",
+		.stream_name = "CPU",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBP_CFP,
+		.ops = &tobermory_ops,
+		SND_SOC_DAILINK_REG(cpu),
+	},
+};
+
+static const struct snd_kcontrol_new controls[] = {
+	SOC_DAPM_PIN_SWITCH("Main Speaker"),
+	SOC_DAPM_PIN_SWITCH("DMIC"),
+};
+
+static const struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+
+	SND_SOC_DAPM_MIC("DMIC", NULL),
+	SND_SOC_DAPM_MIC("AMIC", NULL),
+
+	SND_SOC_DAPM_SPK("Main Speaker", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+	{ "Headphone", NULL, "HPOUTL" },
+	{ "Headphone", NULL, "HPOUTR" },
+
+	{ "Main Speaker", NULL, "SPKOUTL" },
+	{ "Main Speaker", NULL, "SPKOUTR" },
+
+	{ "Headset Mic", NULL, "MICBIAS" },
+	{ "IN4L", NULL, "Headset Mic" },
+	{ "IN4R", NULL, "Headset Mic" },
+
+	{ "AMIC", NULL, "MICBIAS" },
+	{ "IN1L", NULL, "AMIC" },
+	{ "IN1R", NULL, "AMIC" },
+
+	{ "DMIC", NULL, "MICBIAS" },
+	{ "DMICDAT", NULL, "DMIC" },
+};
+
+static struct snd_soc_jack tobermory_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin tobermory_headset_pins[] = {
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static int tobermory_late_probe(struct snd_soc_card *card)
+{
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_component *component;
+	struct snd_soc_dai *codec_dai;
+	int ret;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	component = snd_soc_rtd_to_codec(rtd, 0)->component;
+	codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
+				     32768, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET |
+					 SND_JACK_BTN_0, &tobermory_headset,
+					 tobermory_headset_pins,
+					 ARRAY_SIZE(tobermory_headset_pins));
+	if (ret)
+		return ret;
+
+	wm8962_mic_detect(component, &tobermory_headset);
+
+	return 0;
+}
+
+static struct snd_soc_card tobermory = {
+	.name = "Tobermory",
+	.owner = THIS_MODULE,
+	.dai_link = tobermory_dai,
+	.num_links = ARRAY_SIZE(tobermory_dai),
+
+	.set_bias_level = tobermory_set_bias_level,
+	.set_bias_level_post = tobermory_set_bias_level_post,
+
+	.controls = controls,
+	.num_controls = ARRAY_SIZE(controls),
+	.dapm_widgets = widgets,
+	.num_dapm_widgets = ARRAY_SIZE(widgets),
+	.dapm_routes = audio_paths,
+	.num_dapm_routes = ARRAY_SIZE(audio_paths),
+	.fully_routed = true,
+
+	.late_probe = tobermory_late_probe,
+};
+
+static int tobermory_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &tobermory;
+	int ret;
+
+	card->dev = &pdev->dev;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret)
+		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
+
+	return ret;
+}
+
+static struct platform_driver tobermory_driver = {
+	.driver = {
+		.name = "tobermory",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = tobermory_probe,
+};
+
+module_platform_driver(tobermory_driver);
+
+MODULE_DESCRIPTION("Tobermory audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:tobermory");