[PATCH v3 4/9] ASoC: codecs: Add uda1342 codec driver

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The UDA1342 is an NXP audio codec, support 2x Stereo audio ADC (4x PGA
mic inputs), stereo audio DAC, with basic audio processing.

Signed-off-by: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
---
 sound/soc/codecs/Kconfig   |   8 +
 sound/soc/codecs/Makefile  |   2 +
 sound/soc/codecs/uda1342.c | 347 +++++++++++++++++++++++++++++++++++++
 sound/soc/codecs/uda1342.h |  78 +++++++++
 4 files changed, 435 insertions(+)
 create mode 100644 sound/soc/codecs/uda1342.c
 create mode 100644 sound/soc/codecs/uda1342.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 6480f1bd43f4..6a6125e94d2d 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -283,6 +283,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_TWL4030
 	imply SND_SOC_TWL6040
 	imply SND_SOC_UDA1334
+	imply SND_SOC_UDA1342
 	imply SND_SOC_UDA1380
 	imply SND_SOC_WCD9335
 	imply SND_SOC_WCD934X
@@ -2131,6 +2132,13 @@ config SND_SOC_UDA1334
 	  and has basic features such as de-emphasis (at 44.1 kHz sampling
 	  rate) and mute.
 
+config SND_SOC_UDA1342
+	tristate "NXP UDA1342 CODEC"
+	depends on I2C
+	help
+	  The UDA1342 is an NXP audio codec, support 2x Stereo audio ADC (4x PGA
+	  mic inputs), stereo audio DAC, with basic audio processing.
+
 config SND_SOC_UDA1380
 	tristate
 	depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 029fa42ce5c0..ac7d8b71b32b 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -325,6 +325,7 @@ snd-soc-ts3a227e-y := ts3a227e.o
 snd-soc-twl4030-y := twl4030.o
 snd-soc-twl6040-y := twl6040.o
 snd-soc-uda1334-y := uda1334.o
+snd-soc-uda1342-y := uda1342.o
 snd-soc-uda1380-y := uda1380.o
 snd-soc-wcd-classh-y := wcd-clsh-v2.o
 snd-soc-wcd-mbhc-y := wcd-mbhc-v2.o
@@ -735,6 +736,7 @@ obj-$(CONFIG_SND_SOC_TS3A227E)	+= snd-soc-ts3a227e.o
 obj-$(CONFIG_SND_SOC_TWL4030)	+= snd-soc-twl4030.o
 obj-$(CONFIG_SND_SOC_TWL6040)	+= snd-soc-twl6040.o
 obj-$(CONFIG_SND_SOC_UDA1334)	+= snd-soc-uda1334.o
+obj-$(CONFIG_SND_SOC_UDA1342)	+= snd-soc-uda1342.o
 obj-$(CONFIG_SND_SOC_UDA1380)	+= snd-soc-uda1380.o
 obj-$(CONFIG_SND_SOC_WCD_CLASSH)	+= snd-soc-wcd-classh.o
 obj-$(CONFIG_SND_SOC_WCD_MBHC)	+= snd-soc-wcd-mbhc.o
diff --git a/sound/soc/codecs/uda1342.c b/sound/soc/codecs/uda1342.c
new file mode 100644
index 000000000000..3d49a7869948
--- /dev/null
+++ b/sound/soc/codecs/uda1342.c
@@ -0,0 +1,347 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// uda1342.c  --  UDA1342 ALSA SoC Codec driver
+// Based on the WM87xx drivers by Liam Girdwood and Richard Purdie
+//
+// Copyright 2007 Dension Audio Systems Ltd.
+// Copyright 2024 Loongson Technology Co.,Ltd.
+//
+// Modifications by Christian Pellegrin <chripell@xxxxxxxxxxxx>
+// Further cleanup and restructuring by:
+//         Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <linux/pm_runtime.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "uda1342.h"
+
+#define UDA134X_FORMATS	(SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
+			 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S20_3LE)
+
+struct uda1342_priv {
+	int sysclk;
+	int dai_fmt;
+
+	struct snd_pcm_substream *provider_substream;
+	struct snd_pcm_substream *consumer_substream;
+
+	struct regmap *regmap;
+	struct i2c_client *i2c;
+};
+
+static const struct reg_default uda1342_reg_defaults[] = {
+	{ 0x00, 0x1042 },
+	{ 0x01, 0x0000 },
+	{ 0x10, 0x0088 },
+	{ 0x11, 0x0000 },
+	{ 0x12, 0x0000 },
+	{ 0x20, 0x0080 },
+	{ 0x21, 0x0080 },
+};
+
+static int uda1342_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+	struct snd_soc_component *component = dai->component;
+	struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
+	unsigned int mask;
+	unsigned int val = 0;
+
+	/* Master mute */
+	mask = BIT(5);
+	if (mute)
+		val = mask;
+
+	return regmap_update_bits(uda1342->regmap, 0x10, mask, val);
+}
+
+static int uda1342_startup(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
+	struct snd_pcm_runtime *provider_runtime;
+
+	if (uda1342->provider_substream) {
+		provider_runtime = uda1342->provider_substream->runtime;
+
+		snd_pcm_hw_constraint_single(substream->runtime,
+					     SNDRV_PCM_HW_PARAM_RATE, provider_runtime->rate);
+		snd_pcm_hw_constraint_single(substream->runtime,
+					     SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
+					     provider_runtime->sample_bits);
+
+		uda1342->consumer_substream = substream;
+	} else {
+		uda1342->provider_substream = substream;
+	}
+
+	return 0;
+}
+
+static void uda1342_shutdown(struct snd_pcm_substream *substream,
+			     struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
+
+	if (uda1342->provider_substream == substream)
+		uda1342->provider_substream = uda1342->consumer_substream;
+
+	uda1342->consumer_substream = NULL;
+}
+
+static int uda1342_hw_params(struct snd_pcm_substream *substream,
+			     struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
+	struct device *dev = &uda1342->i2c->dev;
+	unsigned int hw_params = 0;
+
+	if (substream == uda1342->consumer_substream)
+		return 0;
+
+	/* set SYSCLK / fs ratio */
+	switch (uda1342->sysclk / params_rate(params)) {
+	case 512:
+		break;
+	case 384:
+		hw_params |= BIT(4);
+		break;
+	case 256:
+		hw_params |= BIT(5);
+		break;
+	default:
+		dev_err(dev, "unsupported frequency\n");
+		return -EINVAL;
+	}
+
+	/* set DAI format and word length */
+	switch (uda1342->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		switch (params_width(params)) {
+		case 16:
+			hw_params |= BIT(1);
+			break;
+		case 18:
+			hw_params |= BIT(2);
+			break;
+		case 20:
+			hw_params |= BIT(2) | BIT(1);
+			break;
+		default:
+			dev_err(dev, "unsupported format (right)\n");
+			return -EINVAL;
+		}
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		hw_params |= BIT(3);
+		break;
+	default:
+		dev_err(dev, "unsupported format\n");
+		return -EINVAL;
+	}
+
+	return regmap_update_bits(uda1342->regmap, 0x0,
+				  STATUS0_DAIFMT_MASK | STATUS0_SYSCLK_MASK, hw_params);
+}
+
+static int uda1342_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+				  int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_component *component = codec_dai->component;
+	struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
+	struct device *dev = &uda1342->i2c->dev;
+
+	/*
+	 * Anything between 256fs*8Khz and 512fs*48Khz should be acceptable
+	 * because the codec is slave. Of course limitations of the clock
+	 * master (the IIS controller) apply.
+	 * We'll error out on set_hw_params if it's not OK
+	 */
+	if ((freq >= (256 * 8000)) && (freq <= (512 * 48000))) {
+		uda1342->sysclk = freq;
+		return 0;
+	}
+
+	dev_err(dev, "unsupported sysclk\n");
+
+	return -EINVAL;
+}
+
+static int uda1342_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
+{
+	struct snd_soc_component *component = codec_dai->component;
+	struct uda1342_priv *uda1342 = snd_soc_component_get_drvdata(component);
+
+	/* codec supports only full consumer mode */
+	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_BC_FC) {
+		dev_err(&uda1342->i2c->dev, "unsupported consumer mode.\n");
+		return -EINVAL;
+	}
+
+	/* We can't setup DAI format here as it depends on the word bit num */
+	/* so let's just store the value for later */
+	uda1342->dai_fmt = fmt;
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new uda1342_snd_controls[] = {
+	SOC_SINGLE("Master Playback Volume", 0x11, 0, 0x3F, 1),
+	SOC_SINGLE("Analog1 Volume", 0x12, 0, 0x1F, 1),
+};
+
+/* Common DAPM widgets */
+static const struct snd_soc_dapm_widget uda1342_dapm_widgets[] = {
+	SND_SOC_DAPM_INPUT("VINL1"),
+	SND_SOC_DAPM_INPUT("VINR1"),
+	SND_SOC_DAPM_INPUT("VINL2"),
+	SND_SOC_DAPM_INPUT("VINR2"),
+
+	SND_SOC_DAPM_DAC("DAC", "Playback", 0, 1, 0),
+	SND_SOC_DAPM_ADC("ADC", "Capture", 0, 9, 0),
+
+	SND_SOC_DAPM_OUTPUT("VOUTL"),
+	SND_SOC_DAPM_OUTPUT("VOUTR"),
+};
+
+static const struct snd_soc_dapm_route uda1342_dapm_routes[] = {
+	{ "ADC", NULL, "VINL1" },
+	{ "ADC", NULL, "VINR1" },
+	{ "ADC", NULL, "VINL2" },
+	{ "ADC", NULL, "VINR2" },
+	{ "VOUTL", NULL, "DAC" },
+	{ "VOUTR", NULL, "DAC" },
+};
+
+static const struct snd_soc_dai_ops uda1342_dai_ops = {
+	.startup	= uda1342_startup,
+	.shutdown	= uda1342_shutdown,
+	.hw_params	= uda1342_hw_params,
+	.mute_stream	= uda1342_mute,
+	.set_sysclk	= uda1342_set_dai_sysclk,
+	.set_fmt	= uda1342_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver uda1342_dai = {
+	.name = "uda1342-hifi",
+	/* playback capabilities */
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_8000_48000,
+		.formats = UDA134X_FORMATS,
+	},
+	/* capture capabilities */
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_8000_48000,
+		.formats = UDA134X_FORMATS,
+	},
+	/* pcm operations */
+	.ops = &uda1342_dai_ops,
+};
+
+static const struct snd_soc_component_driver soc_component_dev_uda1342 = {
+	.controls		= uda1342_snd_controls,
+	.num_controls		= ARRAY_SIZE(uda1342_snd_controls),
+	.dapm_widgets		= uda1342_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(uda1342_dapm_widgets),
+	.dapm_routes		= uda1342_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(uda1342_dapm_routes),
+	.suspend_bias_off	= 1,
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+};
+
+static const struct regmap_config uda1342_regmap = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = 0x21,
+	.reg_defaults = uda1342_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(uda1342_reg_defaults),
+	.cache_type = REGCACHE_MAPLE,
+};
+
+static int uda1342_i2c_probe(struct i2c_client *i2c)
+{
+	struct uda1342_priv *uda1342;
+
+	uda1342 = devm_kzalloc(&i2c->dev, sizeof(*uda1342), GFP_KERNEL);
+	if (!uda1342)
+		return -ENOMEM;
+
+	uda1342->regmap = devm_regmap_init_i2c(i2c, &uda1342_regmap);
+	if (IS_ERR(uda1342->regmap))
+		return PTR_ERR(uda1342->regmap);
+
+	i2c_set_clientdata(i2c, uda1342);
+	uda1342->i2c = i2c;
+
+	return devm_snd_soc_register_component(&i2c->dev,
+					       &soc_component_dev_uda1342,
+					       &uda1342_dai, 1);
+}
+
+static int uda1342_suspend(struct device *dev)
+{
+	struct uda1342_priv *uda1342 = dev_get_drvdata(dev);
+
+	regcache_cache_only(uda1342->regmap, true);
+
+	return 0;
+}
+
+static int uda1342_resume(struct device *dev)
+{
+	struct uda1342_priv *uda1342 = dev_get_drvdata(dev);
+
+	regcache_mark_dirty(uda1342->regmap);
+	regcache_sync(uda1342->regmap);
+
+	return 0;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(uda1342_pm_ops,
+				 uda1342_suspend, uda1342_resume, NULL);
+
+static const struct i2c_device_id uda1342_i2c_id[] = {
+	 { "uda1342", 0 },
+	 { }
+};
+MODULE_DEVICE_TABLE(i2c, uda1342_i2c_id);
+
+static const struct of_device_id uda1342_of_match[] = {
+	 { .compatible = "nxp,uda1342" },
+	 { }
+};
+MODULE_DEVICE_TABLE(of, uda1342_of_match);
+
+static struct i2c_driver uda1342_i2c_driver = {
+	.driver = {
+		.name =  "uda1342",
+		.of_match_table = uda1342_of_match,
+		.pm = pm_sleep_ptr(&uda1342_pm_ops),
+	 },
+	.probe = uda1342_i2c_probe,
+	.id_table = uda1342_i2c_id,
+};
+module_i2c_driver(uda1342_i2c_driver);
+
+MODULE_DESCRIPTION("UDA1342 ALSA soc codec driver");
+MODULE_AUTHOR("Zoltan Devai, Christian Pellegrin <chripell@xxxxxxxxxxxx>");
+MODULE_AUTHOR("Binbin Zhou <zhoubinbin@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/uda1342.h b/sound/soc/codecs/uda1342.h
new file mode 100644
index 000000000000..ff6aea0a8b01
--- /dev/null
+++ b/sound/soc/codecs/uda1342.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Audio support for NXP UDA1342
+ *
+ * Copyright (c) 2005 Giorgio Padrin <giorgio@xxxxxxxxxxxxxxxxx>
+ * Copyright (c) 2024 Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
+ */
+
+#ifndef _UDA1342_H
+#define _UDA1342_H
+
+#define UDA1342_CLK		0x00
+#define UDA1342_IFACE		0x01
+#define UDA1342_PM		0x02
+#define UDA1342_AMIX		0x03
+#define UDA1342_HP		0x04
+#define UDA1342_MVOL		0x11
+#define UDA1342_MIXVOL		0x12
+#define UDA1342_MODE		0x12
+#define UDA1342_DEEMP		0x13
+#define UDA1342_MIXER		0x14
+#define UDA1342_INTSTAT		0x18
+#define UDA1342_DEC		0x20
+#define UDA1342_PGA		0x21
+#define UDA1342_ADC		0x22
+#define UDA1342_AGC		0x23
+#define UDA1342_DECSTAT		0x28
+#define UDA1342_RESET		0x7f
+
+/* Register flags */
+#define R00_EN_ADC		0x0800
+#define R00_EN_DEC		0x0400
+#define R00_EN_DAC		0x0200
+#define R00_EN_INT		0x0100
+#define R00_DAC_CLK		0x0010
+#define R01_SFORI_I2S		0x0000
+#define R01_SFORI_LSB16		0x0100
+#define R01_SFORI_LSB18		0x0200
+#define R01_SFORI_LSB20		0x0300
+#define R01_SFORI_MSB		0x0500
+#define R01_SFORI_MASK		0x0700
+#define R01_SFORO_I2S		0x0000
+#define R01_SFORO_LSB16		0x0001
+#define R01_SFORO_LSB18		0x0002
+#define R01_SFORO_LSB20		0x0003
+#define R01_SFORO_LSB24		0x0004
+#define R01_SFORO_MSB		0x0005
+#define R01_SFORO_MASK		0x0007
+#define R01_SEL_SOURCE		0x0040
+#define R01_SIM			0x0010
+#define R02_PON_PLL		0x8000
+#define R02_PON_HP		0x2000
+#define R02_PON_DAC		0x0400
+#define R02_PON_BIAS		0x0100
+#define R02_EN_AVC		0x0080
+#define R02_PON_AVC		0x0040
+#define R02_PON_LNA		0x0010
+#define R02_PON_PGAL		0x0008
+#define R02_PON_ADCL		0x0004
+#define R02_PON_PGAR		0x0002
+#define R02_PON_ADCR		0x0001
+#define R13_MTM			0x4000
+#define R14_SILENCE		0x0080
+#define R14_SDET_ON		0x0040
+#define R21_MT_ADC		0x8000
+#define R22_SEL_LNA		0x0008
+#define R22_SEL_MIC		0x0004
+#define R22_SKIP_DCFIL		0x0002
+#define R23_AGC_EN		0x0001
+
+#define UDA1342_DAI_DUPLEX	0 /* playback and capture on single DAI */
+#define UDA1342_DAI_PLAYBACK	1 /* playback DAI */
+#define UDA1342_DAI_CAPTURE	2 /* capture DAI */
+
+#define STATUS0_DAIFMT_MASK (~(7 << 1))
+#define STATUS0_SYSCLK_MASK (~(3 << 4))
+
+#endif /* _UDA1342_H */
-- 
2.43.5





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