[PATCH v4 0/2] ASoC: rt9120: Add Richtek RT9120 supprot

[PATCH v4 0/2] ASoC: rt9120: Add Richtek RT9120 supprot

[cy_huang]

From: ChiYuan Huang <cy_huang@richtek.com>

This patch series Add the Richtek RT9120 support.

In v4:
- Add 'classd_tlv' for 'SPK Gain Volume' control item.
- Unify the tlv declaration to the postfix '_tlv'.
- Fix 'digital_tlv' mute as 1 to declare the minimum is muted.

In v3:
- Add dvdd regulator binding to check the dvdd voltage domain.
- Refine sdo_select_text.
- Use switch case in 'internal_power_event' function.
- Remove the volume and mute initially write in component probe.
- Remove the mute API. It's no need by HW design.

In v2:
- Add missing #sound-dai-cells property.

ChiYuan Huang (2):
  ASoC: dt-bindings: rt9120: Add initial bindings
  ASoC: rt9120: Add rt9210 audio amplifier support

 .../devicetree/bindings/sound/richtek,rt9120.yaml  |  59 +++
 sound/soc/codecs/Kconfig                           |  10 +
 sound/soc/codecs/Makefile                          |   2 +
 sound/soc/codecs/rt9120.c                          | 495 +++++++++++++++++++++
 4 files changed, 566 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/richtek,rt9120.yaml
 create mode 100644 sound/soc/codecs/rt9120.c

-- 
2.7.4

[PATCH v4 0/2] ASoC: rt9120: Add Richtek RT9120 supprot

[cy_huang]

From: ChiYuan Huang <cy_huang@richtek.com>

This patch series Add the Richtek RT9120 support.

In v4:
- Add 'classd_tlv' for 'SPK Gain Volume' control item.
- Unify the tlv declaration to the postfix '_tlv'.
- Fix 'digital_tlv' mute as 1 to declare the minimum is muted.

In v3:
- Add dvdd regulator binding to check the dvdd voltage domain.
- Refine sdo_select_text.
- Use switch case in 'internal_power_event' function.
- Remove the volume and mute initially write in component probe.
- Remove the mute API. It's no need by HW design.

In v2:
- Add missing #sound-dai-cells property.

ChiYuan Huang (2):
  ASoC: dt-bindings: rt9120: Add initial bindings
  ASoC: rt9120: Add rt9210 audio amplifier support

 .../devicetree/bindings/sound/richtek,rt9120.yaml  |  59 +++
 sound/soc/codecs/Kconfig                           |  10 +
 sound/soc/codecs/Makefile                          |   2 +
 sound/soc/codecs/rt9120.c                          | 495 +++++++++++++++++++++
 4 files changed, 566 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/richtek,rt9120.yaml
 create mode 100644 sound/soc/codecs/rt9120.c

-- 
2.7.4

[PATCH v4 1/2] ASoC: dt-bindings: rt9120: Add initial bindings

[cy_huang]

From: ChiYuan Huang <cy_huang@richtek.com>

Add initial bindings for Richtek rt9120 audio amplifier.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
---
 .../devicetree/bindings/sound/richtek,rt9120.yaml  | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/richtek,rt9120.yaml

diff --git a/Documentation/devicetree/bindings/sound/richtek,rt9120.yaml b/Documentation/devicetree/bindings/sound/richtek,rt9120.yaml
new file mode 100644
index 00000000..5655ca5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/richtek,rt9120.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/richtek,rt9120.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9120 Class-D audio amplifier
+
+maintainers:
+  - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+  The RT9120 is a high efficiency, I2S-input, stereo audio power amplifier
+  delivering 2*20W into 8 Ohm BTL speaker loads. It supports the wide input
+  voltage  range from 4.5V to 26.4V to meet the need on most common
+  applications like as TV, monitors. home entertainment, electronic music
+  equipment.
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt9120
+
+  reg:
+    description: I2C device address
+    maxItems: 1
+
+  pwdnn-gpios:
+    description: GPIO used for power down, low active
+    maxItems: 1
+
+  dvdd-supply:
+    description: |
+      Supply for the default on DVDD power, voltage domain must be 3P3V or 1P8V
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - dvdd-supply
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      rt9120@1a {
+        compatible = "richtek,rt9120";
+        reg = <0x1a>;
+        pwdnn-gpios = <&gpio26 2 0>;
+        dvdd-supply = <&vdd_io_reg>;
+        #sound-dai-cells = <0>;
+      };
+    };
-- 
2.7.4

[PATCH v4 1/2] ASoC: dt-bindings: rt9120: Add initial bindings

[cy_huang]

From: ChiYuan Huang <cy_huang@richtek.com>

Add initial bindings for Richtek rt9120 audio amplifier.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
---
 .../devicetree/bindings/sound/richtek,rt9120.yaml  | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/richtek,rt9120.yaml

diff --git a/Documentation/devicetree/bindings/sound/richtek,rt9120.yaml b/Documentation/devicetree/bindings/sound/richtek,rt9120.yaml
new file mode 100644
index 00000000..5655ca5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/richtek,rt9120.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/richtek,rt9120.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9120 Class-D audio amplifier
+
+maintainers:
+  - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+  The RT9120 is a high efficiency, I2S-input, stereo audio power amplifier
+  delivering 2*20W into 8 Ohm BTL speaker loads. It supports the wide input
+  voltage  range from 4.5V to 26.4V to meet the need on most common
+  applications like as TV, monitors. home entertainment, electronic music
+  equipment.
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt9120
+
+  reg:
+    description: I2C device address
+    maxItems: 1
+
+  pwdnn-gpios:
+    description: GPIO used for power down, low active
+    maxItems: 1
+
+  dvdd-supply:
+    description: |
+      Supply for the default on DVDD power, voltage domain must be 3P3V or 1P8V
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - dvdd-supply
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      rt9120@1a {
+        compatible = "richtek,rt9120";
+        reg = <0x1a>;
+        pwdnn-gpios = <&gpio26 2 0>;
+        dvdd-supply = <&vdd_io_reg>;
+        #sound-dai-cells = <0>;
+      };
+    };
-- 
2.7.4

[PATCH v4 2/2] ASoC: rt9120: Add rt9210 audio amplifier support

[cy_huang]

From: ChiYuan Huang <cy_huang@richtek.com>

Add Richtek rt9120 audio amplifier support.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
---
 sound/soc/codecs/Kconfig  |  10 +
 sound/soc/codecs/Makefile |   2 +
 sound/soc/codecs/rt9120.c | 495 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 507 insertions(+)
 create mode 100644 sound/soc/codecs/rt9120.c

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 82ee233..155050d 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -187,6 +187,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_RT715_SDCA_SDW
 	imply SND_SOC_RT1308_SDW
 	imply SND_SOC_RT1316_SDW
+	imply SND_SOC_RT9120
 	imply SND_SOC_SDW_MOCKUP
 	imply SND_SOC_SGTL5000
 	imply SND_SOC_SI476X
@@ -1288,6 +1289,15 @@ config SND_SOC_RT715_SDCA_SDW
 	select REGMAP_SOUNDWIRE
 	select REGMAP_SOUNDWIRE_MBQ
 
+config SND_SOC_RT9120
+	tristate "Richtek RT9120 Stereo Class-D Amplifier"
+	depends on I2C
+	select REGMAP_I2C
+	select GPIOLIB
+	help
+	  Enable support for Richtek RT9120 20W, stereo, inductor-less,
+	  high-efficiency Class-D audio amplifier.
+
 config SND_SOC_SDW_MOCKUP
 	tristate "SoundWire mockup codec"
 	depends on EXPERT
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 8dcea2c..5ba164d 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -203,6 +203,7 @@ snd-soc-rt711-objs := rt711.o rt711-sdw.o
 snd-soc-rt711-sdca-objs := rt711-sdca.o rt711-sdca-sdw.o
 snd-soc-rt715-objs := rt715.o rt715-sdw.o
 snd-soc-rt715-sdca-objs := rt715-sdca.o rt715-sdca-sdw.o
+snd-soc-rt9120-objs := rt9120.o
 snd-soc-sdw-mockup-objs := sdw-mockup.o
 snd-soc-sgtl5000-objs := sgtl5000.o
 snd-soc-alc5623-objs := alc5623.o
@@ -531,6 +532,7 @@ obj-$(CONFIG_SND_SOC_RT711)     += snd-soc-rt711.o
 obj-$(CONFIG_SND_SOC_RT711_SDCA_SDW)     += snd-soc-rt711-sdca.o
 obj-$(CONFIG_SND_SOC_RT715)     += snd-soc-rt715.o
 obj-$(CONFIG_SND_SOC_RT715_SDCA_SDW)     += snd-soc-rt715-sdca.o
+obj-$(CONFIG_SND_SOC_RT9120)	+= snd-soc-rt9120.o
 obj-$(CONFIG_SND_SOC_SDW_MOCKUP)     += snd-soc-sdw-mockup.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o
 obj-$(CONFIG_SND_SOC_SIGMADSP)	+= snd-soc-sigmadsp.o
diff --git a/sound/soc/codecs/rt9120.c b/sound/soc/codecs/rt9120.c
new file mode 100644
index 00000000..f957498
--- /dev/null
+++ b/sound/soc/codecs/rt9120.c
@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#define RT9120_REG_DEVID	0x00
+#define RT9120_REG_I2SFMT	0x02
+#define RT9120_REG_I2SWL	0x03
+#define RT9120_REG_SDIOSEL	0x04
+#define RT9120_REG_SYSCTL	0x05
+#define RT9120_REG_SPKGAIN	0x07
+#define RT9120_REG_VOLRAMP	0x0A
+#define RT9120_REG_ERRRPT	0x10
+#define RT9120_REG_MSVOL	0x20
+#define RT9120_REG_SWRESET	0x40
+#define RT9120_REG_INTERNAL0	0x65
+#define RT9120_REG_INTERNAL1	0x69
+#define RT9120_REG_UVPOPT	0x6C
+
+#define RT9120_VID_MASK		GENMASK(15, 8)
+#define RT9120_SWRST_MASK	BIT(7)
+#define RT9120_MUTE_MASK	GENMASK(5, 4)
+#define RT9120_I2SFMT_MASK	GENMASK(4, 2)
+#define RT9120_I2SFMT_SHIFT	2
+#define RT9120_CFG_FMT_I2S	0
+#define RT9120_CFG_FMT_LEFTJ	1
+#define RT9120_CFG_FMT_RIGHTJ	2
+#define RT9120_CFG_FMT_DSPA	3
+#define RT9120_CFG_FMT_DSPB	7
+#define RT9120_AUDBIT_MASK	GENMASK(1, 0)
+#define RT9120_CFG_AUDBIT_16	0
+#define RT9120_CFG_AUDBIT_20	1
+#define RT9120_CFG_AUDBIT_24	2
+#define RT9120_AUDWL_MASK	GENMASK(5, 0)
+#define RT9120_CFG_WORDLEN_16	16
+#define RT9120_CFG_WORDLEN_24	24
+#define RT9120_CFG_WORDLEN_32	32
+#define RT9120_DVDD_UVSEL_MASK	GENMASK(5, 4)
+
+#define RT9120_VENDOR_ID	0x4200
+#define RT9120_RESET_WAITMS	20
+#define RT9120_CHIPON_WAITMS	20
+#define RT9120_AMPON_WAITMS	50
+#define RT9120_AMPOFF_WAITMS	100
+#define RT9120_LVAPP_THRESUV	2000000
+
+/* 8000 to 192000 supported , only 176400 not support */
+#define RT9120_RATES_MASK	(SNDRV_PCM_RATE_8000_192000 &\
+				 ~SNDRV_PCM_RATE_176400)
+#define RT9120_FMTS_MASK	(SNDRV_PCM_FMTBIT_S16_LE |\
+				 SNDRV_PCM_FMTBIT_S24_LE |\
+				 SNDRV_PCM_FMTBIT_S32_LE)
+
+struct rt9120_data {
+	struct device *dev;
+	struct regmap *regmap;
+};
+
+/* 11bit [min,max,step] = [-103.9375dB, 24dB, 0.0625dB] */
+static const DECLARE_TLV_DB_SCALE(digital_tlv, -1039375, 625, 1);
+
+/* {6, 8, 10, 12, 13, 14, 15, 16}dB */
+static const DECLARE_TLV_DB_RANGE(classd_tlv,
+	0, 3, TLV_DB_SCALE_ITEM(600, 200, 0),
+	4, 7, TLV_DB_SCALE_ITEM(1300, 100, 0)
+);
+
+static const char * const sdo_select_text[] = {
+	"None", "INTF", "Final", "RMS Detect"
+};
+
+static const struct soc_enum sdo_select_enum =
+	SOC_ENUM_SINGLE(RT9120_REG_SDIOSEL, 4, ARRAY_SIZE(sdo_select_text),
+			sdo_select_text);
+
+static const struct snd_kcontrol_new rt9120_snd_controls[] = {
+	SOC_SINGLE_TLV("MS Volume", RT9120_REG_MSVOL, 0, 2047, 1, digital_tlv),
+	SOC_SINGLE_TLV("SPK Gain Volume", RT9120_REG_SPKGAIN, 0, 7, 0, classd_tlv),
+	SOC_SINGLE("PBTL Switch", RT9120_REG_SYSCTL, 3, 1, 0),
+	SOC_ENUM("SDO Select", sdo_select_enum),
+};
+
+static int internal_power_event(struct snd_soc_dapm_widget *w,
+				struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *comp = snd_soc_dapm_to_component(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		snd_soc_component_write(comp, RT9120_REG_ERRRPT, 0);
+		break;
+	case SND_SOC_DAPM_POST_PMU:
+		msleep(RT9120_AMPON_WAITMS);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		msleep(RT9120_AMPOFF_WAITMS);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget rt9120_dapm_widgets[] = {
+	SND_SOC_DAPM_MIXER("DMIX", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_DAC("LDAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_DAC("RDAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_SUPPLY("PWND", RT9120_REG_SYSCTL, 6, 1,
+			    internal_power_event, SND_SOC_DAPM_PRE_PMU |
+			    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+	SND_SOC_DAPM_PGA("SPKL PA", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("SPKR PA", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_OUTPUT("SPKL"),
+	SND_SOC_DAPM_OUTPUT("SPKR"),
+};
+
+static const struct snd_soc_dapm_route rt9120_dapm_routes[] = {
+	{ "DMIX", NULL, "AIF Playback" },
+	/* SPKL */
+	{ "LDAC", NULL, "PWND" },
+	{ "LDAC", NULL, "DMIX" },
+	{ "SPKL PA", NULL, "LDAC" },
+	{ "SPKL", NULL, "SPKL PA" },
+	/* SPKR */
+	{ "RDAC", NULL, "PWND" },
+	{ "RDAC", NULL, "DMIX" },
+	{ "SPKR PA", NULL, "RDAC" },
+	{ "SPKR", NULL, "SPKR PA" },
+	/* Cap */
+	{ "AIF Capture", NULL, "LDAC" },
+	{ "AIF Capture", NULL, "RDAC" },
+};
+
+static int rt9120_codec_probe(struct snd_soc_component *comp)
+{
+	struct rt9120_data *data = snd_soc_component_get_drvdata(comp);
+
+	snd_soc_component_init_regmap(comp, data->regmap);
+
+	/* Internal setting */
+	snd_soc_component_write(comp, RT9120_REG_INTERNAL1, 0x03);
+	snd_soc_component_write(comp, RT9120_REG_INTERNAL0, 0x69);
+	return 0;
+}
+
+static const struct snd_soc_component_driver rt9120_component_driver = {
+	.probe = rt9120_codec_probe,
+	.controls = rt9120_snd_controls,
+	.num_controls = ARRAY_SIZE(rt9120_snd_controls),
+	.dapm_widgets = rt9120_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt9120_dapm_widgets),
+	.dapm_routes = rt9120_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt9120_dapm_routes),
+};
+
+static int rt9120_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *comp = dai->component;
+	unsigned int format;
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		format = RT9120_CFG_FMT_I2S;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		format = RT9120_CFG_FMT_LEFTJ;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		format = RT9120_CFG_FMT_RIGHTJ;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		format = RT9120_CFG_FMT_DSPA;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		format = RT9120_CFG_FMT_DSPB;
+		break;
+	default:
+		dev_err(dai->dev, "Unknown dai format\n");
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(comp, RT9120_REG_I2SFMT,
+				      RT9120_I2SFMT_MASK,
+				      format << RT9120_I2SFMT_SHIFT);
+	return 0;
+}
+
+static int rt9120_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *param,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *comp = dai->component;
+	unsigned int param_width, param_slot_width;
+	int width;
+
+	switch (width = params_width(param)) {
+	case 16:
+		param_width = RT9120_CFG_AUDBIT_16;
+		break;
+	case 20:
+		param_width = RT9120_CFG_AUDBIT_20;
+		break;
+	case 24:
+	case 32:
+		param_width = RT9120_CFG_AUDBIT_24;
+		break;
+	default:
+		dev_err(dai->dev, "Unsupported data width [%d]\n", width);
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(comp, RT9120_REG_I2SFMT,
+				      RT9120_AUDBIT_MASK, param_width);
+
+	switch (width = params_physical_width(param)) {
+	case 16:
+		param_slot_width = RT9120_CFG_WORDLEN_16;
+		break;
+	case 24:
+		param_slot_width = RT9120_CFG_WORDLEN_24;
+		break;
+	case 32:
+		param_slot_width = RT9120_CFG_WORDLEN_32;
+		break;
+	default:
+		dev_err(dai->dev, "Unsupported slot width [%d]\n", width);
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(comp, RT9120_REG_I2SWL,
+				      RT9120_AUDWL_MASK, param_slot_width);
+	return 0;
+}
+
+static const struct snd_soc_dai_ops rt9120_dai_ops = {
+	.set_fmt = rt9120_set_fmt,
+	.hw_params = rt9120_hw_params,
+};
+
+static struct snd_soc_dai_driver rt9120_dai = {
+	.name = "rt9120_aif",
+	.playback = {
+		.stream_name = "AIF Playback",
+		.rates = RT9120_RATES_MASK,
+		.formats = RT9120_FMTS_MASK,
+		.rate_max = 192000,
+		.rate_min = 8000,
+		.channels_min = 1,
+		.channels_max = 2,
+	},
+	.capture = {
+		.stream_name = "AIF Capture",
+		.rates = RT9120_RATES_MASK,
+		.formats = RT9120_FMTS_MASK,
+		.rate_max = 192000,
+		.rate_min = 8000,
+		.channels_min = 1,
+		.channels_max = 2,
+	},
+	.ops = &rt9120_dai_ops,
+	.symmetric_rate = 1,
+	.symmetric_sample_bits = 1,
+};
+
+static const struct regmap_range rt9120_rd_yes_ranges[] = {
+	regmap_reg_range(0x00, 0x0C),
+	regmap_reg_range(0x10, 0x15),
+	regmap_reg_range(0x20, 0x27),
+	regmap_reg_range(0x30, 0x38),
+	regmap_reg_range(0x3A, 0x40),
+	regmap_reg_range(0x65, 0x65),
+	regmap_reg_range(0x69, 0x69),
+	regmap_reg_range(0x6C, 0x6C)
+};
+
+static const struct regmap_access_table rt9120_rd_table = {
+	.yes_ranges = rt9120_rd_yes_ranges,
+	.n_yes_ranges = ARRAY_SIZE(rt9120_rd_yes_ranges),
+};
+
+static const struct regmap_range rt9120_wr_yes_ranges[] = {
+	regmap_reg_range(0x00, 0x00),
+	regmap_reg_range(0x02, 0x0A),
+	regmap_reg_range(0x10, 0x15),
+	regmap_reg_range(0x20, 0x27),
+	regmap_reg_range(0x30, 0x38),
+	regmap_reg_range(0x3A, 0x3D),
+	regmap_reg_range(0x40, 0x40),
+	regmap_reg_range(0x65, 0x65),
+	regmap_reg_range(0x69, 0x69),
+	regmap_reg_range(0x6C, 0x6C)
+};
+
+static const struct regmap_access_table rt9120_wr_table = {
+	.yes_ranges = rt9120_wr_yes_ranges,
+	.n_yes_ranges = ARRAY_SIZE(rt9120_wr_yes_ranges),
+};
+
+static int rt9120_get_reg_size(unsigned int reg)
+{
+	switch (reg) {
+	case 0x00:
+	case 0x09:
+	case 0x20 ... 0x27:
+		return 2;
+	case 0x30 ... 0x3D:
+		return 3;
+	case 0x3E ... 0x3F:
+		return 4;
+	default:
+		return 1;
+	}
+}
+
+static int rt9120_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+	struct rt9120_data *data = context;
+	struct i2c_client *i2c = to_i2c_client(data->dev);
+	int size = rt9120_get_reg_size(reg);
+	u8 raw[4] = {0};
+	int ret;
+
+	ret = i2c_smbus_read_i2c_block_data(i2c, reg, size, raw);
+	if (ret < 0)
+		return ret;
+	else if (ret != size)
+		return -EIO;
+
+	switch (size) {
+	case 4:
+		*val = be32_to_cpup((__be32 *)raw);
+		break;
+	case 3:
+		*val = raw[0] << 16 | raw[1] << 8 | raw[0];
+		break;
+	case 2:
+		*val = be16_to_cpup((__be16 *)raw);
+		break;
+	default:
+		*val = raw[0];
+	}
+
+	return 0;
+}
+
+static int rt9120_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+	struct rt9120_data *data = context;
+	struct i2c_client *i2c = to_i2c_client(data->dev);
+	int size = rt9120_get_reg_size(reg);
+	__be32 be32_val;
+	u8 *rawp = (u8 *)&be32_val;
+	int offs = 4 - size;
+
+	be32_val = cpu_to_be32(val);
+	return i2c_smbus_write_i2c_block_data(i2c, reg, size, rawp + offs);
+}
+
+static const struct regmap_config rt9120_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 32,
+	.max_register = RT9120_REG_UVPOPT,
+
+	.reg_read = rt9120_reg_read,
+	.reg_write = rt9120_reg_write,
+
+	.wr_table = &rt9120_wr_table,
+	.rd_table = &rt9120_rd_table,
+};
+
+static int rt9120_check_vendor_info(struct rt9120_data *data)
+{
+	unsigned int devid;
+	int ret;
+
+	ret = regmap_read(data->regmap, RT9120_REG_DEVID, &devid);
+	if (ret)
+		return ret;
+
+	if ((devid & RT9120_VID_MASK) != RT9120_VENDOR_ID) {
+		dev_err(data->dev, "DEVID not correct [0x%04x]\n", devid);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int rt9120_do_register_reset(struct rt9120_data *data)
+{
+	int ret;
+
+	ret = regmap_write(data->regmap, RT9120_REG_SWRESET,
+			   RT9120_SWRST_MASK);
+	if (ret)
+		return ret;
+
+	msleep(RT9120_RESET_WAITMS);
+	return 0;
+}
+
+static int rt9120_probe(struct i2c_client *i2c)
+{
+	struct rt9120_data *data;
+	struct gpio_desc *pwdnn_gpio;
+	struct regulator *dvdd_supply;
+	int dvdd_supply_volt, ret;
+
+	data = devm_kzalloc(&i2c->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->dev = &i2c->dev;
+	i2c_set_clientdata(i2c, data);
+
+	pwdnn_gpio = devm_gpiod_get_optional(&i2c->dev, "pwdnn",
+					     GPIOD_OUT_HIGH);
+	if (IS_ERR(pwdnn_gpio)) {
+		dev_err(&i2c->dev, "Failed to initialize 'pwdnn' gpio\n");
+		return PTR_ERR(pwdnn_gpio);
+	} else if (pwdnn_gpio) {
+		dev_dbg(&i2c->dev, "'pwdnn' from low to high, wait chip on\n");
+		msleep(RT9120_CHIPON_WAITMS);
+	}
+
+	data->regmap = devm_regmap_init(&i2c->dev, NULL, data,
+					&rt9120_regmap_config);
+	if (IS_ERR(data->regmap)) {
+		ret = PTR_ERR(data->regmap);
+		dev_err(&i2c->dev, "Failed to init regmap [%d]\n", ret);
+		return ret;
+	}
+
+	ret = rt9120_check_vendor_info(data);
+	if (ret) {
+		dev_err(&i2c->dev, "Failed to check vendor info\n");
+		return ret;
+	}
+
+	ret = rt9120_do_register_reset(data);
+	if (ret) {
+		dev_err(&i2c->dev, "Failed to do register reset\n");
+		return ret;
+	}
+
+	dvdd_supply = devm_regulator_get(&i2c->dev, "dvdd");
+	if (IS_ERR(dvdd_supply)) {
+		dev_err(&i2c->dev, "No dvdd regulator found\n");
+		return PTR_ERR(dvdd_supply);
+	}
+
+	dvdd_supply_volt = regulator_get_voltage(dvdd_supply);
+	if (dvdd_supply_volt <= RT9120_LVAPP_THRESUV) {
+		dev_dbg(&i2c->dev, "dvdd low voltage design\n");
+		ret = regmap_update_bits(data->regmap, RT9120_REG_UVPOPT,
+					 RT9120_DVDD_UVSEL_MASK, 0);
+		if (ret) {
+			dev_err(&i2c->dev, "Failed to config dvdd uvsel\n");
+			return ret;
+		}
+	}
+
+	return devm_snd_soc_register_component(&i2c->dev,
+					       &rt9120_component_driver,
+					       &rt9120_dai, 1);
+}
+
+static const struct of_device_id __maybe_unused rt9120_device_table[] = {
+	{ .compatible = "richtek,rt9120", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rt9120_device_table);
+
+static struct i2c_driver rt9120_driver = {
+	.driver = {
+		.name = "rt9120",
+		.of_match_table = rt9120_device_table,
+	},
+	.probe_new = rt9120_probe,
+};
+module_i2c_driver(rt9120_driver);
+
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("RT9120 Audio Amplifier Driver");
+MODULE_LICENSE("GPL");
-- 
2.7.4

[PATCH v4 2/2] ASoC: rt9120: Add rt9210 audio amplifier support

[cy_huang]

From: ChiYuan Huang <cy_huang@richtek.com>

Add Richtek rt9120 audio amplifier support.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
---
 sound/soc/codecs/Kconfig  |  10 +
 sound/soc/codecs/Makefile |   2 +
 sound/soc/codecs/rt9120.c | 495 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 507 insertions(+)
 create mode 100644 sound/soc/codecs/rt9120.c

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 82ee233..155050d 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -187,6 +187,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_RT715_SDCA_SDW
 	imply SND_SOC_RT1308_SDW
 	imply SND_SOC_RT1316_SDW
+	imply SND_SOC_RT9120
 	imply SND_SOC_SDW_MOCKUP
 	imply SND_SOC_SGTL5000
 	imply SND_SOC_SI476X
@@ -1288,6 +1289,15 @@ config SND_SOC_RT715_SDCA_SDW
 	select REGMAP_SOUNDWIRE
 	select REGMAP_SOUNDWIRE_MBQ
 
+config SND_SOC_RT9120
+	tristate "Richtek RT9120 Stereo Class-D Amplifier"
+	depends on I2C
+	select REGMAP_I2C
+	select GPIOLIB
+	help
+	  Enable support for Richtek RT9120 20W, stereo, inductor-less,
+	  high-efficiency Class-D audio amplifier.
+
 config SND_SOC_SDW_MOCKUP
 	tristate "SoundWire mockup codec"
 	depends on EXPERT
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 8dcea2c..5ba164d 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -203,6 +203,7 @@ snd-soc-rt711-objs := rt711.o rt711-sdw.o
 snd-soc-rt711-sdca-objs := rt711-sdca.o rt711-sdca-sdw.o
 snd-soc-rt715-objs := rt715.o rt715-sdw.o
 snd-soc-rt715-sdca-objs := rt715-sdca.o rt715-sdca-sdw.o
+snd-soc-rt9120-objs := rt9120.o
 snd-soc-sdw-mockup-objs := sdw-mockup.o
 snd-soc-sgtl5000-objs := sgtl5000.o
 snd-soc-alc5623-objs := alc5623.o
@@ -531,6 +532,7 @@ obj-$(CONFIG_SND_SOC_RT711)     += snd-soc-rt711.o
 obj-$(CONFIG_SND_SOC_RT711_SDCA_SDW)     += snd-soc-rt711-sdca.o
 obj-$(CONFIG_SND_SOC_RT715)     += snd-soc-rt715.o
 obj-$(CONFIG_SND_SOC_RT715_SDCA_SDW)     += snd-soc-rt715-sdca.o
+obj-$(CONFIG_SND_SOC_RT9120)	+= snd-soc-rt9120.o
 obj-$(CONFIG_SND_SOC_SDW_MOCKUP)     += snd-soc-sdw-mockup.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o
 obj-$(CONFIG_SND_SOC_SIGMADSP)	+= snd-soc-sigmadsp.o
diff --git a/sound/soc/codecs/rt9120.c b/sound/soc/codecs/rt9120.c
new file mode 100644
index 00000000..f957498
--- /dev/null
+++ b/sound/soc/codecs/rt9120.c
@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#define RT9120_REG_DEVID	0x00
+#define RT9120_REG_I2SFMT	0x02
+#define RT9120_REG_I2SWL	0x03
+#define RT9120_REG_SDIOSEL	0x04
+#define RT9120_REG_SYSCTL	0x05
+#define RT9120_REG_SPKGAIN	0x07
+#define RT9120_REG_VOLRAMP	0x0A
+#define RT9120_REG_ERRRPT	0x10
+#define RT9120_REG_MSVOL	0x20
+#define RT9120_REG_SWRESET	0x40
+#define RT9120_REG_INTERNAL0	0x65
+#define RT9120_REG_INTERNAL1	0x69
+#define RT9120_REG_UVPOPT	0x6C
+
+#define RT9120_VID_MASK		GENMASK(15, 8)
+#define RT9120_SWRST_MASK	BIT(7)
+#define RT9120_MUTE_MASK	GENMASK(5, 4)
+#define RT9120_I2SFMT_MASK	GENMASK(4, 2)
+#define RT9120_I2SFMT_SHIFT	2
+#define RT9120_CFG_FMT_I2S	0
+#define RT9120_CFG_FMT_LEFTJ	1
+#define RT9120_CFG_FMT_RIGHTJ	2
+#define RT9120_CFG_FMT_DSPA	3
+#define RT9120_CFG_FMT_DSPB	7
+#define RT9120_AUDBIT_MASK	GENMASK(1, 0)
+#define RT9120_CFG_AUDBIT_16	0
+#define RT9120_CFG_AUDBIT_20	1
+#define RT9120_CFG_AUDBIT_24	2
+#define RT9120_AUDWL_MASK	GENMASK(5, 0)
+#define RT9120_CFG_WORDLEN_16	16
+#define RT9120_CFG_WORDLEN_24	24
+#define RT9120_CFG_WORDLEN_32	32
+#define RT9120_DVDD_UVSEL_MASK	GENMASK(5, 4)
+
+#define RT9120_VENDOR_ID	0x4200
+#define RT9120_RESET_WAITMS	20
+#define RT9120_CHIPON_WAITMS	20
+#define RT9120_AMPON_WAITMS	50
+#define RT9120_AMPOFF_WAITMS	100
+#define RT9120_LVAPP_THRESUV	2000000
+
+/* 8000 to 192000 supported , only 176400 not support */
+#define RT9120_RATES_MASK	(SNDRV_PCM_RATE_8000_192000 &\
+				 ~SNDRV_PCM_RATE_176400)
+#define RT9120_FMTS_MASK	(SNDRV_PCM_FMTBIT_S16_LE |\
+				 SNDRV_PCM_FMTBIT_S24_LE |\
+				 SNDRV_PCM_FMTBIT_S32_LE)
+
+struct rt9120_data {
+	struct device *dev;
+	struct regmap *regmap;
+};
+
+/* 11bit [min,max,step] = [-103.9375dB, 24dB, 0.0625dB] */
+static const DECLARE_TLV_DB_SCALE(digital_tlv, -1039375, 625, 1);
+
+/* {6, 8, 10, 12, 13, 14, 15, 16}dB */
+static const DECLARE_TLV_DB_RANGE(classd_tlv,
+	0, 3, TLV_DB_SCALE_ITEM(600, 200, 0),
+	4, 7, TLV_DB_SCALE_ITEM(1300, 100, 0)
+);
+
+static const char * const sdo_select_text[] = {
+	"None", "INTF", "Final", "RMS Detect"
+};
+
+static const struct soc_enum sdo_select_enum =
+	SOC_ENUM_SINGLE(RT9120_REG_SDIOSEL, 4, ARRAY_SIZE(sdo_select_text),
+			sdo_select_text);
+
+static const struct snd_kcontrol_new rt9120_snd_controls[] = {
+	SOC_SINGLE_TLV("MS Volume", RT9120_REG_MSVOL, 0, 2047, 1, digital_tlv),
+	SOC_SINGLE_TLV("SPK Gain Volume", RT9120_REG_SPKGAIN, 0, 7, 0, classd_tlv),
+	SOC_SINGLE("PBTL Switch", RT9120_REG_SYSCTL, 3, 1, 0),
+	SOC_ENUM("SDO Select", sdo_select_enum),
+};
+
+static int internal_power_event(struct snd_soc_dapm_widget *w,
+				struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *comp = snd_soc_dapm_to_component(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		snd_soc_component_write(comp, RT9120_REG_ERRRPT, 0);
+		break;
+	case SND_SOC_DAPM_POST_PMU:
+		msleep(RT9120_AMPON_WAITMS);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		msleep(RT9120_AMPOFF_WAITMS);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget rt9120_dapm_widgets[] = {
+	SND_SOC_DAPM_MIXER("DMIX", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_DAC("LDAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_DAC("RDAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_SUPPLY("PWND", RT9120_REG_SYSCTL, 6, 1,
+			    internal_power_event, SND_SOC_DAPM_PRE_PMU |
+			    SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+	SND_SOC_DAPM_PGA("SPKL PA", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("SPKR PA", SND_SOC_NOPM, 0, 0, NULL, 0),
+	SND_SOC_DAPM_OUTPUT("SPKL"),
+	SND_SOC_DAPM_OUTPUT("SPKR"),
+};
+
+static const struct snd_soc_dapm_route rt9120_dapm_routes[] = {
+	{ "DMIX", NULL, "AIF Playback" },
+	/* SPKL */
+	{ "LDAC", NULL, "PWND" },
+	{ "LDAC", NULL, "DMIX" },
+	{ "SPKL PA", NULL, "LDAC" },
+	{ "SPKL", NULL, "SPKL PA" },
+	/* SPKR */
+	{ "RDAC", NULL, "PWND" },
+	{ "RDAC", NULL, "DMIX" },
+	{ "SPKR PA", NULL, "RDAC" },
+	{ "SPKR", NULL, "SPKR PA" },
+	/* Cap */
+	{ "AIF Capture", NULL, "LDAC" },
+	{ "AIF Capture", NULL, "RDAC" },
+};
+
+static int rt9120_codec_probe(struct snd_soc_component *comp)
+{
+	struct rt9120_data *data = snd_soc_component_get_drvdata(comp);
+
+	snd_soc_component_init_regmap(comp, data->regmap);
+
+	/* Internal setting */
+	snd_soc_component_write(comp, RT9120_REG_INTERNAL1, 0x03);
+	snd_soc_component_write(comp, RT9120_REG_INTERNAL0, 0x69);
+	return 0;
+}
+
+static const struct snd_soc_component_driver rt9120_component_driver = {
+	.probe = rt9120_codec_probe,
+	.controls = rt9120_snd_controls,
+	.num_controls = ARRAY_SIZE(rt9120_snd_controls),
+	.dapm_widgets = rt9120_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt9120_dapm_widgets),
+	.dapm_routes = rt9120_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt9120_dapm_routes),
+};
+
+static int rt9120_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *comp = dai->component;
+	unsigned int format;
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		format = RT9120_CFG_FMT_I2S;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		format = RT9120_CFG_FMT_LEFTJ;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		format = RT9120_CFG_FMT_RIGHTJ;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		format = RT9120_CFG_FMT_DSPA;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		format = RT9120_CFG_FMT_DSPB;
+		break;
+	default:
+		dev_err(dai->dev, "Unknown dai format\n");
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(comp, RT9120_REG_I2SFMT,
+				      RT9120_I2SFMT_MASK,
+				      format << RT9120_I2SFMT_SHIFT);
+	return 0;
+}
+
+static int rt9120_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *param,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *comp = dai->component;
+	unsigned int param_width, param_slot_width;
+	int width;
+
+	switch (width = params_width(param)) {
+	case 16:
+		param_width = RT9120_CFG_AUDBIT_16;
+		break;
+	case 20:
+		param_width = RT9120_CFG_AUDBIT_20;
+		break;
+	case 24:
+	case 32:
+		param_width = RT9120_CFG_AUDBIT_24;
+		break;
+	default:
+		dev_err(dai->dev, "Unsupported data width [%d]\n", width);
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(comp, RT9120_REG_I2SFMT,
+				      RT9120_AUDBIT_MASK, param_width);
+
+	switch (width = params_physical_width(param)) {
+	case 16:
+		param_slot_width = RT9120_CFG_WORDLEN_16;
+		break;
+	case 24:
+		param_slot_width = RT9120_CFG_WORDLEN_24;
+		break;
+	case 32:
+		param_slot_width = RT9120_CFG_WORDLEN_32;
+		break;
+	default:
+		dev_err(dai->dev, "Unsupported slot width [%d]\n", width);
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(comp, RT9120_REG_I2SWL,
+				      RT9120_AUDWL_MASK, param_slot_width);
+	return 0;
+}
+
+static const struct snd_soc_dai_ops rt9120_dai_ops = {
+	.set_fmt = rt9120_set_fmt,
+	.hw_params = rt9120_hw_params,
+};
+
+static struct snd_soc_dai_driver rt9120_dai = {
+	.name = "rt9120_aif",
+	.playback = {
+		.stream_name = "AIF Playback",
+		.rates = RT9120_RATES_MASK,
+		.formats = RT9120_FMTS_MASK,
+		.rate_max = 192000,
+		.rate_min = 8000,
+		.channels_min = 1,
+		.channels_max = 2,
+	},
+	.capture = {
+		.stream_name = "AIF Capture",
+		.rates = RT9120_RATES_MASK,
+		.formats = RT9120_FMTS_MASK,
+		.rate_max = 192000,
+		.rate_min = 8000,
+		.channels_min = 1,
+		.channels_max = 2,
+	},
+	.ops = &rt9120_dai_ops,
+	.symmetric_rate = 1,
+	.symmetric_sample_bits = 1,
+};
+
+static const struct regmap_range rt9120_rd_yes_ranges[] = {
+	regmap_reg_range(0x00, 0x0C),
+	regmap_reg_range(0x10, 0x15),
+	regmap_reg_range(0x20, 0x27),
+	regmap_reg_range(0x30, 0x38),
+	regmap_reg_range(0x3A, 0x40),
+	regmap_reg_range(0x65, 0x65),
+	regmap_reg_range(0x69, 0x69),
+	regmap_reg_range(0x6C, 0x6C)
+};
+
+static const struct regmap_access_table rt9120_rd_table = {
+	.yes_ranges = rt9120_rd_yes_ranges,
+	.n_yes_ranges = ARRAY_SIZE(rt9120_rd_yes_ranges),
+};
+
+static const struct regmap_range rt9120_wr_yes_ranges[] = {
+	regmap_reg_range(0x00, 0x00),
+	regmap_reg_range(0x02, 0x0A),
+	regmap_reg_range(0x10, 0x15),
+	regmap_reg_range(0x20, 0x27),
+	regmap_reg_range(0x30, 0x38),
+	regmap_reg_range(0x3A, 0x3D),
+	regmap_reg_range(0x40, 0x40),
+	regmap_reg_range(0x65, 0x65),
+	regmap_reg_range(0x69, 0x69),
+	regmap_reg_range(0x6C, 0x6C)
+};
+
+static const struct regmap_access_table rt9120_wr_table = {
+	.yes_ranges = rt9120_wr_yes_ranges,
+	.n_yes_ranges = ARRAY_SIZE(rt9120_wr_yes_ranges),
+};
+
+static int rt9120_get_reg_size(unsigned int reg)
+{
+	switch (reg) {
+	case 0x00:
+	case 0x09:
+	case 0x20 ... 0x27:
+		return 2;
+	case 0x30 ... 0x3D:
+		return 3;
+	case 0x3E ... 0x3F:
+		return 4;
+	default:
+		return 1;
+	}
+}
+
+static int rt9120_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+	struct rt9120_data *data = context;
+	struct i2c_client *i2c = to_i2c_client(data->dev);
+	int size = rt9120_get_reg_size(reg);
+	u8 raw[4] = {0};
+	int ret;
+
+	ret = i2c_smbus_read_i2c_block_data(i2c, reg, size, raw);
+	if (ret < 0)
+		return ret;
+	else if (ret != size)
+		return -EIO;
+
+	switch (size) {
+	case 4:
+		*val = be32_to_cpup((__be32 *)raw);
+		break;
+	case 3:
+		*val = raw[0] << 16 | raw[1] << 8 | raw[0];
+		break;
+	case 2:
+		*val = be16_to_cpup((__be16 *)raw);
+		break;
+	default:
+		*val = raw[0];
+	}
+
+	return 0;
+}
+
+static int rt9120_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+	struct rt9120_data *data = context;
+	struct i2c_client *i2c = to_i2c_client(data->dev);
+	int size = rt9120_get_reg_size(reg);
+	__be32 be32_val;
+	u8 *rawp = (u8 *)&be32_val;
+	int offs = 4 - size;
+
+	be32_val = cpu_to_be32(val);
+	return i2c_smbus_write_i2c_block_data(i2c, reg, size, rawp + offs);
+}
+
+static const struct regmap_config rt9120_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 32,
+	.max_register = RT9120_REG_UVPOPT,
+
+	.reg_read = rt9120_reg_read,
+	.reg_write = rt9120_reg_write,
+
+	.wr_table = &rt9120_wr_table,
+	.rd_table = &rt9120_rd_table,
+};
+
+static int rt9120_check_vendor_info(struct rt9120_data *data)
+{
+	unsigned int devid;
+	int ret;
+
+	ret = regmap_read(data->regmap, RT9120_REG_DEVID, &devid);
+	if (ret)
+		return ret;
+
+	if ((devid & RT9120_VID_MASK) != RT9120_VENDOR_ID) {
+		dev_err(data->dev, "DEVID not correct [0x%04x]\n", devid);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int rt9120_do_register_reset(struct rt9120_data *data)
+{
+	int ret;
+
+	ret = regmap_write(data->regmap, RT9120_REG_SWRESET,
+			   RT9120_SWRST_MASK);
+	if (ret)
+		return ret;
+
+	msleep(RT9120_RESET_WAITMS);
+	return 0;
+}
+
+static int rt9120_probe(struct i2c_client *i2c)
+{
+	struct rt9120_data *data;
+	struct gpio_desc *pwdnn_gpio;
+	struct regulator *dvdd_supply;
+	int dvdd_supply_volt, ret;
+
+	data = devm_kzalloc(&i2c->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->dev = &i2c->dev;
+	i2c_set_clientdata(i2c, data);
+
+	pwdnn_gpio = devm_gpiod_get_optional(&i2c->dev, "pwdnn",
+					     GPIOD_OUT_HIGH);
+	if (IS_ERR(pwdnn_gpio)) {
+		dev_err(&i2c->dev, "Failed to initialize 'pwdnn' gpio\n");
+		return PTR_ERR(pwdnn_gpio);
+	} else if (pwdnn_gpio) {
+		dev_dbg(&i2c->dev, "'pwdnn' from low to high, wait chip on\n");
+		msleep(RT9120_CHIPON_WAITMS);
+	}
+
+	data->regmap = devm_regmap_init(&i2c->dev, NULL, data,
+					&rt9120_regmap_config);
+	if (IS_ERR(data->regmap)) {
+		ret = PTR_ERR(data->regmap);
+		dev_err(&i2c->dev, "Failed to init regmap [%d]\n", ret);
+		return ret;
+	}
+
+	ret = rt9120_check_vendor_info(data);
+	if (ret) {
+		dev_err(&i2c->dev, "Failed to check vendor info\n");
+		return ret;
+	}
+
+	ret = rt9120_do_register_reset(data);
+	if (ret) {
+		dev_err(&i2c->dev, "Failed to do register reset\n");
+		return ret;
+	}
+
+	dvdd_supply = devm_regulator_get(&i2c->dev, "dvdd");
+	if (IS_ERR(dvdd_supply)) {
+		dev_err(&i2c->dev, "No dvdd regulator found\n");
+		return PTR_ERR(dvdd_supply);
+	}
+
+	dvdd_supply_volt = regulator_get_voltage(dvdd_supply);
+	if (dvdd_supply_volt <= RT9120_LVAPP_THRESUV) {
+		dev_dbg(&i2c->dev, "dvdd low voltage design\n");
+		ret = regmap_update_bits(data->regmap, RT9120_REG_UVPOPT,
+					 RT9120_DVDD_UVSEL_MASK, 0);
+		if (ret) {
+			dev_err(&i2c->dev, "Failed to config dvdd uvsel\n");
+			return ret;
+		}
+	}
+
+	return devm_snd_soc_register_component(&i2c->dev,
+					       &rt9120_component_driver,
+					       &rt9120_dai, 1);
+}
+
+static const struct of_device_id __maybe_unused rt9120_device_table[] = {
+	{ .compatible = "richtek,rt9120", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rt9120_device_table);
+
+static struct i2c_driver rt9120_driver = {
+	.driver = {
+		.name = "rt9120",
+		.of_match_table = rt9120_device_table,
+	},
+	.probe_new = rt9120_probe,
+};
+module_i2c_driver(rt9120_driver);
+
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("RT9120 Audio Amplifier Driver");
+MODULE_LICENSE("GPL");
-- 
2.7.4

Re: [PATCH v4 0/2] ASoC: rt9120: Add Richtek RT9120 supprot

[Mark Brown]

On Wed, 13 Oct 2021 09:28:37 +0800, cy_huang wrote:
> From: ChiYuan Huang <cy_huang@richtek.com>
> 
> This patch series Add the Richtek RT9120 support.
> 
> In v4:
> - Add 'classd_tlv' for 'SPK Gain Volume' control item.
> - Unify the tlv declaration to the postfix '_tlv'.
> - Fix 'digital_tlv' mute as 1 to declare the minimum is muted.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: dt-bindings: rt9120: Add initial bindings
      commit: 126a76ada98f17c7f4ed1cc8b8e0429c574924e5
[2/2] ASoC: rt9120: Add rt9210 audio amplifier support
      commit: 7228d83531fcd801aeac97db99a028a386a2e828

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Re: [PATCH v4 0/2] ASoC: rt9120: Add Richtek RT9120 supprot

[Mark Brown]

On Wed, 13 Oct 2021 09:28:37 +0800, cy_huang wrote:
> From: ChiYuan Huang <cy_huang@richtek.com>
> 
> This patch series Add the Richtek RT9120 support.
> 
> In v4:
> - Add 'classd_tlv' for 'SPK Gain Volume' control item.
> - Unify the tlv declaration to the postfix '_tlv'.
> - Fix 'digital_tlv' mute as 1 to declare the minimum is muted.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: dt-bindings: rt9120: Add initial bindings
      commit: 126a76ada98f17c7f4ed1cc8b8e0429c574924e5
[2/2] ASoC: rt9120: Add rt9210 audio amplifier support
      commit: 7228d83531fcd801aeac97db99a028a386a2e828

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark