[PATCH 1/3] ASoC: samsung: Document DT bindings for Midas sound subsystem

[PATCH 1/3] ASoC: samsung: Document DT bindings for Midas sound subsystem

[Sylwester Nawrocki]

This patch adds documentation of DT biding for the Midas sound complex.
Partially based on the *txt version by Simon Shields <simon@lineageos.org>.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
 .../bindings/sound/samsung,midas-audio.yaml        | 105 +++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml

diff --git a/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml b/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml
new file mode 100644
index 0000000..4a82829
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/samsung,midas-audio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Midas audio complex with WM1811 codec
+
+maintainers:
+  - Sylwester Nawrocki <s.nawrocki@samsung.com>
+
+properties:
+  compatible:
+    const: samsung,midas-audio
+
+  model:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: The user-visible name of this sound complex.
+
+  cpu:
+    type: object
+    properties:
+      sound-dai:
+        $ref: /schemas/types.yaml#/definitions/phandle-array
+        description: phandle to the I2S controller
+
+  codec:
+    type: object
+    properties:
+      sound-dai:
+        $ref: /schemas/types.yaml#/definitions/phandle-array
+        description: phandle to the WM1811 CODEC node
+
+  samsung,audio-routing:
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+    description: |
+      List of the connections between audio components; each entry is
+      a pair of strings, the first being the connection's sink, the second
+      being the connection's source; valid names for sources and sinks are
+      the WM1811's pins (as documented in its binding), and the jacks
+      on the board: HP, SPK, Main Mic, Sub Mic, Headset Mic.
+
+  mic-bias-supply:
+    description: Supply for the micbias on the Main microphone
+
+  submic-bias-supply:
+    description: Supply for the micbias on the Sub microphone
+
+  fm-sel-gpios:
+    description: GPIO pin for FM selection
+
+  lineout-sel-gpios:
+    description: GPIO pin for line out selection
+
+required:
+  - compatible
+  - model
+  - cpu
+  - codec
+  - samsung,audio-routing
+  - mic-bias-supply
+  - submic-bias-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    sound {
+        compatible = "samsung,midas-audio";
+        model = "Midas";
+
+        mic-bias-gpios = <&gpf1 7 GPIO_ACTIVE_HIGH>;
+        submic-bias-gpios = <&gpf2 0 GPIO_ACTIVE_HIGH>;
+
+        mic-bias-supply = <&mic_bias_reg>;
+        submic-bias-supply = <&submic_bias_reg>;
+
+        samsung,audio-routing =
+                "HP", "HPOUT1L",
+                "HP", "HPOUT1R",
+
+                "SPK", "SPKOUTLN",
+                "SPK", "SPKOUTLP",
+                "SPK", "SPKOUTRN",
+                "SPK", "SPKOUTRP",
+
+                "RCV", "HPOUT2N",
+                "RCV", "HPOUT2P",
+
+                "IN1LP", "Main Mic",
+                "IN1LN", "Main Mic",
+                "IN1RP", "Sub Mic",
+                "IN1LP", "Sub Mic";
+
+        cpu {
+            sound-dai = <&i2s0>;
+        };
+
+        codec {
+            sound-dai = <&wm1811>;
+        };
+
+    };
-- 
2.7.4

[PATCH 2/3] ASoC: samsung: Add sound support for Midas boards

[Sylwester Nawrocki]

From: Simon Shields <simon@lineageos.org>

This patch adds support for voice and BT calls, along with standard
audio output via the speaker, earpiece, headphone jack, HDMI, and
any accessories compatible with Midas boards. This patch also supports
headphone/headset detection and headsets with inline buttons.

Signed-off-by: Simon Shields <simon@lineageos.org>
[m.szyprowski: adaptation to v5.1+ kernels (DAI links initialization)]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
[s.nawrocki: removal of the clk API calls for CODEC MCLK, the jack data
 structure moved to struct midas_priv, coding style and typo fixes,
 conversion to new cpu/codec/dai-node binding]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
 sound/soc/samsung/Kconfig        |   8 +
 sound/soc/samsung/Makefile       |   2 +
 sound/soc/samsung/midas_wm1811.c | 543 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 553 insertions(+)
 create mode 100644 sound/soc/samsung/midas_wm1811.c

diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index 4b5c348..1431be4 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -225,4 +225,12 @@ config SND_SOC_SAMSUNG_ARIES_WM8994
 	  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
+	select SND_SAMSUNG_I2S
+	select SND_SOC_WM8994
+	help
+	  Say Y if you want to add support for SoC audio on the Midas boards.
+
 endif #SND_SOC_SAMSUNG
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 22259f7..398e843 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -42,6 +42,7 @@ snd-soc-odroid-objs := odroid.o
 snd-soc-arndale-objs := arndale.o
 snd-soc-tm2-wm5110-objs := tm2_wm5110.o
 snd-soc-aries-wm8994-objs := aries_wm8994.o
+snd-soc-midas-wm1811-objs := midas_wm1811.o
 
 obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o
 obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
@@ -66,3 +67,4 @@ 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
diff --git a/sound/soc/samsung/midas_wm1811.c b/sound/soc/samsung/midas_wm1811.c
new file mode 100644
index 0000000..d03340c
--- /dev/null
+++ b/sound/soc/samsung/midas_wm1811.c
@@ -0,0 +1,543 @@
+// 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/mfd/wm8994/registers.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/regulator/consumer.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 regulator *reg_mic_bias;
+	struct regulator *reg_submic_bias;
+	struct gpio_desc *gpio_fm_sel;
+	struct gpio_desc *gpio_lineout_sel;
+	unsigned int fll1_rate;
+
+	struct snd_soc_jack headset_jack;
+};
+
+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 = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_dai *cpu_dai = asoc_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 = asoc_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	= substream->private_data;
+	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 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_mic_bias(struct snd_soc_dapm_widget *w,
+			  struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_card *card = w->dapm->card;
+	struct midas_priv *priv = snd_soc_card_get_drvdata(card);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		return regulator_enable(priv->reg_mic_bias);
+	case SND_SOC_DAPM_POST_PMD:
+		return regulator_disable(priv->reg_mic_bias);
+	}
+
+	return 0;
+}
+
+static int midas_submic_bias(struct snd_soc_dapm_widget *w,
+			     struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_card *card = w->dapm->card;
+	struct midas_priv *priv = snd_soc_card_get_drvdata(card);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		return regulator_enable(priv->reg_submic_bias);
+	case SND_SOC_DAPM_POST_PMD:
+		return regulator_disable(priv->reg_submic_bias);
+	}
+
+	return 0;
+}
+
+static int midas_fm_set(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_card *card = w->dapm->card;
+	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 = w->dapm->card;
+	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_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Main Mic", midas_mic_bias),
+	SND_SOC_DAPM_MIC("Sub Mic", midas_submic_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 = asoc_rtd_to_codec(rtd, 0);
+
+	if (dapm->dev != 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 = asoc_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;
+	}
+
+	ret = snd_soc_card_jack_new(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, NULL, 0);
+	if (ret)
+		return ret;
+
+	wm8958_mic_detect(aif1_dai->component, &priv->headset_jack,
+			  NULL, NULL, NULL, NULL);
+	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_CBM_CFM,
+		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),
+
+	.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;
+	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->reg_mic_bias = devm_regulator_get(dev, "mic-bias");
+	if (IS_ERR(priv->reg_mic_bias)) {
+		dev_err(dev, "Failed to get mic bias regulator\n");
+		return PTR_ERR(priv->reg_mic_bias);
+	}
+
+	priv->reg_submic_bias = devm_regulator_get(dev, "submic-bias");
+	if (IS_ERR(priv->reg_submic_bias)) {
+		dev_err(dev, "Failed to get submic bias regulator\n");
+		return PTR_ERR(priv->reg_submic_bias);
+	}
+
+	priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->gpio_fm_sel)) {
+		dev_err(dev, "Failed to get FM selection GPIO\n");
+		return PTR_ERR(priv->gpio_fm_sel);
+	}
+
+	priv->gpio_lineout_sel = devm_gpiod_get_optional(dev, "lineout-sel",
+						    GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->gpio_lineout_sel)) {
+		dev_err(dev, "Failed to get line out selection GPIO\n");
+		return PTR_ERR(priv->gpio_lineout_sel);
+	}
+
+	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, "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,
+		.owner = THIS_MODULE,
+		.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");
-- 
2.7.4

[PATCH 3/3] ARM: dts: exynos: Add sound support to Midas

[Sylwester Nawrocki]

From: Simon Shields <simon@lineageos.org>

Update the never-mainlined "samsung,trats2-audio" binding and instead
use the new "samsung,midas-audio" binding.

Signed-off-by: Simon Shields <simon@lineageos.org>
[s.nawrocki: fixed DAPM routing entries for MICBIAS1/2, adjusted to
 changes in the DT binding]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
 arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi | 38 ++++++++++++++
 arch/arm/boot/dts/exynos4412-i9300.dts      |  4 ++
 arch/arm/boot/dts/exynos4412-midas.dtsi     | 78 ++++++++++++++++++++++++-----
 arch/arm/boot/dts/exynos4412-n710x.dts      | 35 +++++++++++++
 4 files changed, 142 insertions(+), 13 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi b/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
index 53b3ca3..cff0980 100644
--- a/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
+++ b/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
@@ -175,3 +175,41 @@
 	gpio = <&gpm0 0 GPIO_ACTIVE_HIGH>;
 	status = "okay";
 };
+
+&submic_bias_reg {
+	gpio = <&gpf2 0 GPIO_ACTIVE_HIGH>;
+	enable-active-high;
+};
+
+&sound {
+	samsung,audio-routing =
+		"HP", "HPOUT1L",
+		"HP", "HPOUT1R",
+
+		"SPK", "SPKOUTLN",
+		"SPK", "SPKOUTLP",
+		"SPK", "SPKOUTRN",
+		"SPK", "SPKOUTRP",
+
+		"RCV", "HPOUT2N",
+		"RCV", "HPOUT2P",
+
+		"HDMI", "LINEOUT1N",
+		"HDMI", "LINEOUT1P",
+
+		"LINE", "LINEOUT2N",
+		"LINE", "LINEOUT2P",
+
+		"IN1LP", "MICBIAS1",
+		"IN1LN", "MICBIAS1",
+		"Main Mic", "MICBIAS1",
+
+		"IN1RP", "Sub Mic",
+		"IN1RN", "Sub Mic",
+
+		"IN2LP:VXRN", "MICBIAS2",
+		"Headset Mic", "MICBIAS2",
+
+		"IN2RN", "FM In",
+		"IN2RP:VXRP", "FM In";
+};
diff --git a/arch/arm/boot/dts/exynos4412-i9300.dts b/arch/arm/boot/dts/exynos4412-i9300.dts
index f8125a9..3691802 100644
--- a/arch/arm/boot/dts/exynos4412-i9300.dts
+++ b/arch/arm/boot/dts/exynos4412-i9300.dts
@@ -20,3 +20,7 @@
 		reg =  <0x40000000 0x40000000>;
 	};
 };
+
+&sound {
+	fm-sel-gpios = <&gpl0 3 GPIO_ACTIVE_HIGH>;
+};
diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi
index 2c8111c..2752363 100644
--- a/arch/arm/boot/dts/exynos4412-midas.dtsi
+++ b/arch/arm/boot/dts/exynos4412-midas.dtsi
@@ -102,6 +102,30 @@
 		status = "disabled";
 	};
 
+	vbatt_reg: voltage-regulator-9 {
+		compatible = "regulator-fixed";
+		regulator-name = "VBATT";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
+	mic_bias_reg: voltage-regulator-10 {
+		compatible = "regulator-fixed";
+		regulator-name = "MICBIAS_LDO_2.8V";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		gpio = <&gpf1 7 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	submic_bias_reg: voltage-regulator-11 {
+		compatible = "regulator-fixed";
+		regulator-name = "SUB_MICBIAS_LDO_2.8V";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-names = "default";
@@ -266,16 +290,18 @@
 		clock-names = "ext_clock";
 	};
 
-	sound {
-		compatible = "samsung,trats2-audio";
-		samsung,i2s-controller = <&i2s0>;
-		samsung,model = "Trats2";
-		samsung,audio-codec = <&wm1811>;
-		samsung,audio-routing =
-			"SPK", "SPKOUTLN",
-			"SPK", "SPKOUTLP",
-			"SPK", "SPKOUTRN",
-			"SPK", "SPKOUTRP";
+	sound: sound {
+		compatible = "samsung,midas-audio";
+		model = "Midas";
+		mic-bias-supply = <&mic_bias_reg>;
+		submic-bias-supply = <&submic_bias_reg>;
+
+		cpu {
+			sound-dai =  <&i2s0 0>;
+		};
+		codec {
+			sound-dai = <&wm1811>;
+		};
 	};
 
 	thermistor-ap {
@@ -597,11 +623,37 @@
 	wm1811: wm1811@1a {
 		compatible = "wlf,wm1811";
 		reg = <0x1a>;
-		clocks = <&pmu_system_controller 0>;
-		clock-names = "MCLK1";
-		DCVDD-supply = <&ldo3_reg>;
+		clocks = <&pmu_system_controller 0>,
+			<&max77686 MAX77686_CLK_PMIC>;
+		clock-names = "MCLK1", "MCLK2";
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupt-parent = <&gpx3>;
+		interrupts = <6 IRQ_TYPE_LEVEL_HIGH>;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+		#sound-dai-cells = <0>;
+
+		wlf,gpio-cfg = <0x3 0x0 0x0 0x0 0x0 0x0
+			0x0 0x8000 0x0 0x0 0x0>;
+		wlf,micbias-cfg = <0x2f 0x2b>;
+
+		wlf,lineout1-feedback;
+		wlf,lineout1-se;
+		wlf,lineout2-se;
+		wlf,ldoena-always-driven;
+
+		AVDD2-supply = <&vbatt_reg>;
 		DBVDD1-supply = <&ldo3_reg>;
+		DBVDD2-supply = <&vbatt_reg>;
+		DBVDD3-supply = <&vbatt_reg>;
+		DCVDD-supply = <&ldo3_reg>;
+		CPVDD-supply = <&vbatt_reg>;
+		SPKVDD1-supply = <&vbatt_reg>;
+		SPKVDD2-supply = <&vbatt_reg>;
 		wlf,ldo1ena = <&gpj0 4 0>;
+		wlf,ldo2ena = <&gpj0 4 0>;
 	};
 };
 
diff --git a/arch/arm/boot/dts/exynos4412-n710x.dts b/arch/arm/boot/dts/exynos4412-n710x.dts
index 4189e1f..e0c907e 100644
--- a/arch/arm/boot/dts/exynos4412-n710x.dts
+++ b/arch/arm/boot/dts/exynos4412-n710x.dts
@@ -78,3 +78,38 @@
 	gpio = <&gpm0 5 GPIO_ACTIVE_HIGH>;
 	status = "okay";
 };
+
+&sound {
+	samsung,audio-routing =
+		"HP", "HPOUT1L",
+		"HP", "HPOUT1R",
+
+		"SPK", "SPKOUTLN",
+		"SPK", "SPKOUTLP",
+
+		"RCV", "HPOUT2N",
+		"RCV", "HPOUT2P",
+
+		"HDMI", "LINEOUT1N",
+		"HDMI", "LINEOUT1P",
+
+		"LINE", "LINEOUT2N",
+		"LINE", "LINEOUT2P",
+
+		"IN1LP", "MICBIAS2",
+		"IN1LN", "MICBIAS2",
+		"Headset Mic", "MICBIAS2",
+
+		"IN1RP", "Sub Mic",
+		"IN1RN", "Sub Mic",
+
+		"IN2LP:VXRN", "Main Mic",
+		"IN2LN", "Main Mic",
+
+		"IN2RN", "FM In",
+		"IN2RP:VXRP", "FM In";
+};
+
+&submic_bias_reg {
+	regulator-always-on;
+};
-- 
2.7.4

Re: [PATCH 1/3] ASoC: samsung: Document DT bindings for Midas sound subsystem

[Rob Herring]

On Fri, 10 Jul 2020 19:34:58 +0200, Sylwester Nawrocki wrote:
> This patch adds documentation of DT biding for the Midas sound complex.
> Partially based on the *txt version by Simon Shields <simon@lineageos.org>.
> 
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
> ---
>  .../bindings/sound/samsung,midas-audio.yaml        | 105 +++++++++++++++++++++
>  1 file changed, 105 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml
> 


My bot found errors running 'make dt_binding_check' on your patch:

/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/sound/samsung,midas-audio.example.dt.yaml: sound: 'mic-bias-gpios', 'submic-bias-gpios' do not match any of the regexes: 'pinctrl-[0-9]+'


See https://patchwork.ozlabs.org/patch/1327065

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.

Re: [PATCH 2/3] ASoC: samsung: Add sound support for Midas boards

[Krzysztof Kozlowski]

On Fri, Jul 10, 2020 at 07:34:59PM +0200, Sylwester Nawrocki wrote:
> From: Simon Shields <simon@lineageos.org>
> 
> This patch adds support for voice and BT calls, along with standard
> audio output via the speaker, earpiece, headphone jack, HDMI, and
> any accessories compatible with Midas boards. This patch also supports
> headphone/headset detection and headsets with inline buttons.
> 
> Signed-off-by: Simon Shields <simon@lineageos.org>
> [m.szyprowski: adaptation to v5.1+ kernels (DAI links initialization)]
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> [s.nawrocki: removal of the clk API calls for CODEC MCLK, the jack data
>  structure moved to struct midas_priv, coding style and typo fixes,
>  conversion to new cpu/codec/dai-node binding]
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
> ---
>  sound/soc/samsung/Kconfig        |   8 +
>  sound/soc/samsung/Makefile       |   2 +
>  sound/soc/samsung/midas_wm1811.c | 543 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 553 insertions(+)
>  create mode 100644 sound/soc/samsung/midas_wm1811.c

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof

Re: [PATCH 3/3] ARM: dts: exynos: Add sound support to Midas

[Krzysztof Kozlowski]

On Fri, Jul 10, 2020 at 07:35:00PM +0200, Sylwester Nawrocki wrote:
> From: Simon Shields <simon@lineageos.org>
> 
> Update the never-mainlined "samsung,trats2-audio" binding and instead
> use the new "samsung,midas-audio" binding.
> 
> Signed-off-by: Simon Shields <simon@lineageos.org>
> [s.nawrocki: fixed DAPM routing entries for MICBIAS1/2, adjusted to
>  changes in the DT binding]
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
> ---
>  arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi | 38 ++++++++++++++
>  arch/arm/boot/dts/exynos4412-i9300.dts      |  4 ++
>  arch/arm/boot/dts/exynos4412-midas.dtsi     | 78 ++++++++++++++++++++++++-----
>  arch/arm/boot/dts/exynos4412-n710x.dts      | 35 +++++++++++++
>  4 files changed, 142 insertions(+), 13 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi b/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
> index 53b3ca3..cff0980 100644
> --- a/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
> @@ -175,3 +175,41 @@
>  	gpio = <&gpm0 0 GPIO_ACTIVE_HIGH>;
>  	status = "okay";
>  };
> +
> +&submic_bias_reg {

Put them in alphabetical order against oder phandle overrides. Same for
n710x.dts.

> +	gpio = <&gpf2 0 GPIO_ACTIVE_HIGH>;
> +	enable-active-high;
> +};
> +
> +&sound {
> +	samsung,audio-routing =
> +		"HP", "HPOUT1L",
> +		"HP", "HPOUT1R",
> +
> +		"SPK", "SPKOUTLN",
> +		"SPK", "SPKOUTLP",
> +		"SPK", "SPKOUTRN",
> +		"SPK", "SPKOUTRP",
> +
> +		"RCV", "HPOUT2N",
> +		"RCV", "HPOUT2P",
> +
> +		"HDMI", "LINEOUT1N",
> +		"HDMI", "LINEOUT1P",
> +
> +		"LINE", "LINEOUT2N",
> +		"LINE", "LINEOUT2P",
> +
> +		"IN1LP", "MICBIAS1",
> +		"IN1LN", "MICBIAS1",
> +		"Main Mic", "MICBIAS1",
> +
> +		"IN1RP", "Sub Mic",
> +		"IN1RN", "Sub Mic",
> +
> +		"IN2LP:VXRN", "MICBIAS2",
> +		"Headset Mic", "MICBIAS2",
> +
> +		"IN2RN", "FM In",
> +		"IN2RP:VXRP", "FM In";
> +};
> diff --git a/arch/arm/boot/dts/exynos4412-i9300.dts b/arch/arm/boot/dts/exynos4412-i9300.dts
> index f8125a9..3691802 100644
> --- a/arch/arm/boot/dts/exynos4412-i9300.dts
> +++ b/arch/arm/boot/dts/exynos4412-i9300.dts
> @@ -20,3 +20,7 @@
>  		reg =  <0x40000000 0x40000000>;
>  	};
>  };
> +
> +&sound {
> +	fm-sel-gpios = <&gpl0 3 GPIO_ACTIVE_HIGH>;
> +};
> diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi
> index 2c8111c..2752363 100644
> --- a/arch/arm/boot/dts/exynos4412-midas.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-midas.dtsi
> @@ -102,6 +102,30 @@
>  		status = "disabled";
>  	};
>  
> +	vbatt_reg: voltage-regulator-9 {

Since this is the basic DTSI for multiple boards, the numbering here
should be consistent. You will have to rename the ones in Galaxy S3 and
N710 DTSI.

> +		compatible = "regulator-fixed";
> +		regulator-name = "VBATT";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-always-on;
> +	};
> +
> +	mic_bias_reg: voltage-regulator-10 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "MICBIAS_LDO_2.8V";
> +		regulator-min-microvolt = <2800000>;
> +		regulator-max-microvolt = <2800000>;
> +		gpio = <&gpf1 7 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +	};
> +
> +	submic_bias_reg: voltage-regulator-11 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "SUB_MICBIAS_LDO_2.8V";
> +		regulator-min-microvolt = <2800000>;
> +		regulator-max-microvolt = <2800000>;
> +	};
> +
>  	gpio-keys {
>  		compatible = "gpio-keys";
>  		pinctrl-names = "default";
> @@ -266,16 +290,18 @@
>  		clock-names = "ext_clock";
>  	};
>  
> -	sound {
> -		compatible = "samsung,trats2-audio";
> -		samsung,i2s-controller = <&i2s0>;
> -		samsung,model = "Trats2";
> -		samsung,audio-codec = <&wm1811>;
> -		samsung,audio-routing =
> -			"SPK", "SPKOUTLN",
> -			"SPK", "SPKOUTLP",
> -			"SPK", "SPKOUTRN",
> -			"SPK", "SPKOUTRP";
> +	sound: sound {
> +		compatible = "samsung,midas-audio";
> +		model = "Midas";
> +		mic-bias-supply = <&mic_bias_reg>;
> +		submic-bias-supply = <&submic_bias_reg>;
> +
> +		cpu {
> +			sound-dai =  <&i2s0 0>;

Double space after '='.

Best regards,
Krzysztof

Re: [PATCH 3/3] ARM: dts: exynos: Add sound support to Midas

[Sylwester Nawrocki]

On 20.07.2020 16:34, Krzysztof Kozlowski wrote:
> On Fri, Jul 10, 2020 at 07:35:00PM +0200, Sylwester Nawrocki wrote:

>> --- a/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
>> +++ b/arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi
>> @@ -175,3 +175,41 @@
>>  	gpio = <&gpm0 0 GPIO_ACTIVE_HIGH>;
>>  	status = "okay";
>>  };
>> +
>> +&submic_bias_reg {
> 
> Put them in alphabetical order against oder phandle overrides. Same for
> n710x.dts.

>> --- a/arch/arm/boot/dts/exynos4412-midas.dtsi
>> +++ b/arch/arm/boot/dts/exynos4412-midas.dtsi
>> @@ -102,6 +102,30 @@
>>  		status = "disabled";
>>  	};
>>  
>> +	vbatt_reg: voltage-regulator-9 {
> 
> Since this is the basic DTSI for multiple boards, the numbering here
> should be consistent. You will have to rename the ones in Galaxy S3 and
> N710 DTSI.

>> @@ -266,16 +290,18 @@

>> +		cpu {
>> +			sound-dai =  <&i2s0 0>;
> 
> Double space after '='.

Thanks for your review, I have addressed all these issues in just
posted v2.

-- 
Regards,
Sylwester