Merge series "Cirrus Logic CS35L41 Amplifier" from David Rhodes <drhodes@opensource.cirrus.com>:

ASoC driver and devicetree documentation for a new
Cirrus Logic amplifier CS35L41

v7 changes:
Remove property 'classh-bst-max-limit'

David Rhodes (2):
  ASoC: cs35l41: CS35L41 Boosted Smart Amplifier
  ASoC: cs35l41: Add bindings for CS35L41

 .../devicetree/bindings/sound/cs35l41.yaml    |  151 ++
 include/sound/cs35l41.h                       |   34 +
 sound/soc/codecs/Kconfig                      |   12 +
 sound/soc/codecs/Makefile                     |    4 +
 sound/soc/codecs/cs35l41-i2c.c                |  114 ++
 sound/soc/codecs/cs35l41-spi.c                |  143 ++
 sound/soc/codecs/cs35l41-tables.c             |  597 +++++++
 sound/soc/codecs/cs35l41.c                    | 1545 +++++++++++++++++
 sound/soc/codecs/cs35l41.h                    |  775 +++++++++
 9 files changed, 3375 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/cs35l41.yaml
 create mode 100644 include/sound/cs35l41.h
 create mode 100644 sound/soc/codecs/cs35l41-i2c.c
 create mode 100644 sound/soc/codecs/cs35l41-spi.c
 create mode 100644 sound/soc/codecs/cs35l41-tables.c
 create mode 100644 sound/soc/codecs/cs35l41.c
 create mode 100644 sound/soc/codecs/cs35l41.h

--
2.25.1

Documentation/devicetree/bindings/sound/cs35l41.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cs35l41.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS35L41 Speaker Amplifier
+
+maintainers:
+  - david.rhodes@cirrus.com
+
+description: |
+  CS35L41 is a boosted mono Class D amplifier with DSP
+  speaker protection and equalization
+
+properties:
+  compatible:
+    enum:
+      - cirrus,cs35l40
+      - cirrus,cs35l41
+
+  reg:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    description:
+      The first cell indicating the audio interface.
+    const: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  VA-supply:
+    description: voltage regulator phandle for the VA supply
+
+  VP-supply:
+    description: voltage regulator phandle for the VP supply
+
+  cirrus,boost-peak-milliamp:
+    description:
+      Boost-converter peak current limit in mA.
+      Configures the peak current by monitoring the current through the boost FET.
+      Range starts at 1600 mA and goes to a maximum of 4500 mA with increments
+      of 50 mA. See section 4.3.6 of the datasheet for details.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 1600
+    maximum: 4500
+    default: 4500
+
+  cirrus,boost-ind-nanohenry:
+    description:
+      Boost inductor value, expressed in nH. Valid
+      values include 1000, 1200, 1500 and 2200.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 1000
+    maximum: 2200
+
+  cirrus,boost-cap-microfarad:
+    description:
+      Total equivalent boost capacitance on the VBST
+      and VAMP pins, derated at 11 volts DC. The value must be rounded to the
+      nearest integer and expressed in uF.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+
+  cirrus,asp-sdout-hiz:
+    description:
+      Audio serial port SDOUT Hi-Z control. Sets the Hi-Z
+      configuration for SDOUT pin of amplifier.
+      0 = Logic 0 during unused slots, and while all transmit channels disabled
+      1 = Hi-Z during unused slots but logic 0 while all transmit channels disabled
+      2 = (Default) Logic 0 during unused slots, but Hi-Z while all transmit channels disabled
+      3 = Hi-Z during unused slots and while all transmit channels disabled
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 0
+    maximum: 3
+    default: 2
+
+  cirrus,gpio1-polarity-invert:
+    description:
+      Boolean which specifies whether the GPIO1
+      level is inverted. If this property is not present the level is not inverted.
+    type: boolean
+
+  cirrus,gpio1-output-enable:
+    description:
+      Boolean which specifies whether the GPIO1 pin
+      is configured as an output. If this property is not present the
+      pin will be configured as an input.
+    type: boolean
+
+  cirrus,gpio1-src-select:
+    description:
+      Configures the function of the GPIO1 pin.
+      Note that the options are different from the GPIO2 pin
+      0 = High Impedance (Default)
+      1 = GPIO
+      2 = Sync
+      3 = MCLK input
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 0
+    maximum: 3
+
+  cirrus,gpio2-polarity-invert:
+    description:
+      Boolean which specifies whether the GPIO2
+      level is inverted. If this property is not present the level is not inverted.
+    type: boolean
+
+  cirrus,gpio2-output-enable:
+    description:
+      Boolean which specifies whether the GPIO2 pin
+      is configured as an output. If this property is not present the
+      pin will be configured as an input.
+    type: boolean
+
+  cirrus,gpio2-src-select:
+    description:
+      Configures the function of the GPIO2 pin.
+      Note that the options are different from the GPIO1 pin.
+      0 = High Impedance (Default)
+      1 = GPIO
+      2 = Open Drain INTB
+      3 = MCLK input
+      4 = Push-pull INTB (active low)
+      5 = Push-pull INT (active high)
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 0
+    maximum: 5
+
+required:
+  - compatible
+  - reg
+  - "#sound-dai-cells"
+  - cirrus,boost-peak-milliamp
+  - cirrus,boost-ind-nanohenry
+  - cirrus,boost-cap-microfarad
+
+unevaluatedProperties: false
+
+examples:
+  - |
+      cs35l41: cs35l41@2 {
+        compatible = "cirrus,cs35l41";
+        reg = <2>;
+        VA-supply = <&dummy_vreg>;
+        VP-supply = <&dummy_vreg>;
+        reset-gpios = <&gpio 110 0>;
+        cirrus,boost-peak-milliamp = <4500>;
+        cirrus,boost-ind-nanohenry = <1000>;
+        cirrus,boost-cap-microfarad = <15>;
+      };
\ No newline at end of file

include/sound/cs35l41.h

+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * linux/sound/cs35l41.h -- Platform data for CS35L41
+ *
+ * Copyright (c) 2017-2021 Cirrus Logic Inc.
+ *
+ * Author: David Rhodes	<david.rhodes@cirrus.com>
+ */
+
+#ifndef __CS35L41_H
+#define __CS35L41_H
+
+enum cs35l41_clk_ids {
+	CS35L41_CLKID_SCLK = 0,
+	CS35L41_CLKID_LRCLK = 1,
+	CS35L41_CLKID_MCLK = 4,
+};
+
+struct cs35l41_irq_cfg {
+	bool irq_pol_inv;
+	bool irq_out_en;
+	int irq_src_sel;
+};
+
+struct cs35l41_platform_data {
+	int bst_ind;
+	int bst_ipk;
+	int bst_cap;
+	int dout_hiz;
+	struct cs35l41_irq_cfg irq_config1;
+	struct cs35l41_irq_cfg irq_config2;
+};
+
+#endif /* __CS35L41_H */

sound/soc/codecs/Kconfig

@@ -61,6 +61,8 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_CS35L34
 	imply SND_SOC_CS35L35
 	imply SND_SOC_CS35L36
+	imply SND_SOC_CS35L41_SPI
+	imply SND_SOC_CS35L41_I2C
 	imply SND_SOC_CS42L42
 	imply SND_SOC_CS42L51_I2C
 	imply SND_SOC_CS42L52
@@ -603,6 +605,16 @@ config SND_SOC_CS35L36
 	tristate "Cirrus Logic CS35L36 CODEC"
 	depends on I2C
 
+config SND_SOC_CS35L41_SPI
+	tristate "Cirrus Logic CS35L41 CODEC (SPI)"
+	depends on SPI_MASTER
+	select REGMAP_SPI
+
+config SND_SOC_CS35L41_I2C
+	tristate "Cirrus Logic CS35L41 CODEC (I2C)"
+	depends on I2C
+	select REGMAP_I2C
+
 config SND_SOC_CS42L42
 	tristate "Cirrus Logic CS42L42 CODEC"
 	depends on I2C

sound/soc/codecs/Makefile

@@ -54,6 +54,8 @@ snd-soc-cs35l33-objs := cs35l33.o
 snd-soc-cs35l34-objs := cs35l34.o
 snd-soc-cs35l35-objs := cs35l35.o
 snd-soc-cs35l36-objs := cs35l36.o
+snd-soc-cs35l41-spi-objs := cs35l41-spi.o cs35l41.o cs35l41-tables.o
+snd-soc-cs35l41-i2c-objs := cs35l41-i2c.o cs35l41.o cs35l41-tables.o
 snd-soc-cs42l42-objs := cs42l42.o
 snd-soc-cs42l51-objs := cs42l51.o
 snd-soc-cs42l51-i2c-objs := cs42l51-i2c.o
@@ -386,6 +388,8 @@ obj-$(CONFIG_SND_SOC_CS35L33)	+= snd-soc-cs35l33.o
 obj-$(CONFIG_SND_SOC_CS35L34)	+= snd-soc-cs35l34.o
 obj-$(CONFIG_SND_SOC_CS35L35)	+= snd-soc-cs35l35.o
 obj-$(CONFIG_SND_SOC_CS35L36)	+= snd-soc-cs35l36.o
+obj-$(CONFIG_SND_SOC_CS35L41_SPI)	+= snd-soc-cs35l41-spi.o
+obj-$(CONFIG_SND_SOC_CS35L41_I2C)	+= snd-soc-cs35l41-i2c.o
 obj-$(CONFIG_SND_SOC_CS42L42)	+= snd-soc-cs42l42.o
 obj-$(CONFIG_SND_SOC_CS42L51)	+= snd-soc-cs42l51.o
 obj-$(CONFIG_SND_SOC_CS42L51_I2C)	+= snd-soc-cs42l51-i2c.o

sound/soc/codecs/cs35l41-i2c.c

+// SPDX-License-Identifier: GPL-2.0
+//
+// cs35l41-i2c.c -- CS35l41 I2C driver
+//
+// Copyright 2017-2021 Cirrus Logic, Inc.
+//
+// Author: David Rhodes <david.rhodes@cirrus.com>
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <sound/cs35l41.h>
+#include "cs35l41.h"
+
+static struct regmap_config cs35l41_regmap_i2c = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = CS35L41_REGSTRIDE,
+	.reg_format_endian = REGMAP_ENDIAN_BIG,
+	.val_format_endian = REGMAP_ENDIAN_BIG,
+	.max_register = CS35L41_LASTREG,
+	.reg_defaults = cs35l41_reg,
+	.num_reg_defaults = ARRAY_SIZE(cs35l41_reg),
+	.volatile_reg = cs35l41_volatile_reg,
+	.readable_reg = cs35l41_readable_reg,
+	.precious_reg = cs35l41_precious_reg,
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static const struct i2c_device_id cs35l41_id_i2c[] = {
+	{ "cs35l40", 0 },
+	{ "cs35l41", 0 },
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, cs35l41_id_i2c);
+
+static int cs35l41_i2c_probe(struct i2c_client *client,
+				const struct i2c_device_id *id)
+{
+	struct cs35l41_private *cs35l41;
+	struct device *dev = &client->dev;
+	struct cs35l41_platform_data *pdata = dev_get_platdata(dev);
+	const struct regmap_config *regmap_config = &cs35l41_regmap_i2c;
+	int ret;
+
+	cs35l41 = devm_kzalloc(dev, sizeof(struct cs35l41_private), GFP_KERNEL);
+
+	if (!cs35l41)
+		return -ENOMEM;
+
+	cs35l41->dev = dev;
+	cs35l41->irq = client->irq;
+
+	i2c_set_clientdata(client, cs35l41);
+	cs35l41->regmap = devm_regmap_init_i2c(client, regmap_config);
+	if (IS_ERR(cs35l41->regmap)) {
+		ret = PTR_ERR(cs35l41->regmap);
+		dev_err(cs35l41->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	return cs35l41_probe(cs35l41, pdata);
+}
+
+static int cs35l41_i2c_remove(struct i2c_client *client)
+{
+	struct cs35l41_private *cs35l41 = i2c_get_clientdata(client);
+
+	return cs35l41_remove(cs35l41);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id cs35l41_of_match[] = {
+	{ .compatible = "cirrus,cs35l40" },
+	{ .compatible = "cirrus,cs35l41" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, cs35l41_of_match);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id cs35l41_acpi_match[] = {
+	{ "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
+#endif
+
+static struct i2c_driver cs35l41_i2c_driver = {
+	.driver = {
+		.name		= "cs35l41",
+		.of_match_table = of_match_ptr(cs35l41_of_match),
+		.acpi_match_table = ACPI_PTR(cs35l41_acpi_match),
+	},
+	.id_table	= cs35l41_id_i2c,
+	.probe		= cs35l41_i2c_probe,
+	.remove		= cs35l41_i2c_remove,
+};
+
+module_i2c_driver(cs35l41_i2c_driver);
+
+MODULE_DESCRIPTION("I2C CS35L41 driver");
+MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
+MODULE_LICENSE("GPL");

sound/soc/codecs/cs35l41-spi.c

+// SPDX-License-Identifier: GPL-2.0
+//
+// cs35l41-spi.c -- CS35l41 SPI driver
+//
+// Copyright 2017-2021 Cirrus Logic, Inc.
+//
+// Author: David Rhodes	<david.rhodes@cirrus.com>
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/spi/spi.h>
+
+#include <sound/cs35l41.h>
+#include "cs35l41.h"
+
+static struct regmap_config cs35l41_regmap_spi = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.pad_bits = 16,
+	.reg_stride = CS35L41_REGSTRIDE,
+	.reg_format_endian = REGMAP_ENDIAN_BIG,
+	.val_format_endian = REGMAP_ENDIAN_BIG,
+	.max_register = CS35L41_LASTREG,
+	.reg_defaults = cs35l41_reg,
+	.num_reg_defaults = ARRAY_SIZE(cs35l41_reg),
+	.volatile_reg = cs35l41_volatile_reg,
+	.readable_reg = cs35l41_readable_reg,
+	.precious_reg = cs35l41_precious_reg,
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static const struct spi_device_id cs35l41_id_spi[] = {
+	{ "cs35l40", 0 },
+	{ "cs35l41", 0 },
+	{}
+};
+
+MODULE_DEVICE_TABLE(spi, cs35l41_id_spi);
+
+static void cs35l41_spi_otp_setup(struct cs35l41_private *cs35l41,
+					bool is_pre_setup, unsigned int *freq)
+{
+	struct spi_device *spi;
+	u32 orig_spi_freq;
+
+	spi = to_spi_device(cs35l41->dev);
+
+	if (!spi) {
+		dev_err(cs35l41->dev, "%s: No SPI device\n", __func__);
+		return;
+	}
+
+	if (is_pre_setup) {
+		orig_spi_freq = spi->max_speed_hz;
+		if (orig_spi_freq > CS35L41_SPI_MAX_FREQ_OTP) {
+			spi->max_speed_hz = CS35L41_SPI_MAX_FREQ_OTP;
+			spi_setup(spi);
+		}
+		*freq = orig_spi_freq;
+	} else {
+		if (spi->max_speed_hz != *freq) {
+			spi->max_speed_hz = *freq;
+			spi_setup(spi);
+		}
+	}
+}
+
+static int cs35l41_spi_probe(struct spi_device *spi)
+{
+	const struct regmap_config *regmap_config = &cs35l41_regmap_spi;
+	struct cs35l41_platform_data *pdata =
+					dev_get_platdata(&spi->dev);
+	struct cs35l41_private *cs35l41;
+	int ret;
+
+	cs35l41 = devm_kzalloc(&spi->dev,
+			       sizeof(struct cs35l41_private),
+			       GFP_KERNEL);
+	if (!cs35l41)
+		return -ENOMEM;
+
+
+	spi_set_drvdata(spi, cs35l41);
+	cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config);
+	if (IS_ERR(cs35l41->regmap)) {
+		ret = PTR_ERR(cs35l41->regmap);
+		dev_err(&spi->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	cs35l41->dev = &spi->dev;
+	cs35l41->irq = spi->irq;
+	cs35l41->otp_setup = cs35l41_spi_otp_setup;
+
+	return cs35l41_probe(cs35l41, pdata);
+}
+
+static int cs35l41_spi_remove(struct spi_device *spi)
+{
+	struct cs35l41_private *cs35l41 = spi_get_drvdata(spi);
+
+	return cs35l41_remove(cs35l41);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id cs35l41_of_match[] = {
+	{ .compatible = "cirrus,cs35l40" },
+	{ .compatible = "cirrus,cs35l41" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, cs35l41_of_match);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id cs35l41_acpi_match[] = {
+	{ "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);
+#endif
+
+static struct spi_driver cs35l41_spi_driver = {
+	.driver = {
+		.name		= "cs35l41",
+		.of_match_table = of_match_ptr(cs35l41_of_match),
+		.acpi_match_table = ACPI_PTR(cs35l41_acpi_match),
+	},
+	.id_table	= cs35l41_id_spi,
+	.probe		= cs35l41_spi_probe,
+	.remove		= cs35l41_spi_remove,
+};
+
+module_spi_driver(cs35l41_spi_driver);
+
+MODULE_DESCRIPTION("SPI CS35L41 driver");
+MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
+MODULE_LICENSE("GPL");