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ASoC: cs35l41: CS35L41 Boosted Smart Amplifier
SoC Audio driver for the Cirrus Logic CS35L41 amplifier Signed-off-by: David Rhodes <drhodes@opensource.cirrus.com> Tested-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20210907225719.2018115-2-drhodes@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
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| /* 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 | ||
|
|
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| enum cs35l41_clk_ids { | ||
| CS35L41_CLKID_SCLK = 0, | ||
| CS35L41_CLKID_LRCLK = 1, | ||
| CS35L41_CLKID_MCLK = 4, | ||
| }; | ||
|
|
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| struct cs35l41_irq_cfg { | ||
| bool irq_pol_inv; | ||
| bool irq_out_en; | ||
| int irq_src_sel; | ||
| }; | ||
|
|
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| 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 */ |
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| // 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> | ||
|
|
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| #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> | ||
|
|
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| #include <sound/cs35l41.h> | ||
| #include "cs35l41.h" | ||
|
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| 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, | ||
| }; | ||
|
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| static const struct i2c_device_id cs35l41_id_i2c[] = { | ||
| { "cs35l40", 0 }, | ||
| { "cs35l41", 0 }, | ||
| {} | ||
| }; | ||
|
|
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| MODULE_DEVICE_TABLE(i2c, cs35l41_id_i2c); | ||
|
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| 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; | ||
|
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| cs35l41 = devm_kzalloc(dev, sizeof(struct cs35l41_private), GFP_KERNEL); | ||
|
|
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| if (!cs35l41) | ||
| return -ENOMEM; | ||
|
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| cs35l41->dev = dev; | ||
| cs35l41->irq = client->irq; | ||
|
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| 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; | ||
| } | ||
|
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| return cs35l41_probe(cs35l41, pdata); | ||
| } | ||
|
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| static int cs35l41_i2c_remove(struct i2c_client *client) | ||
| { | ||
| struct cs35l41_private *cs35l41 = i2c_get_clientdata(client); | ||
|
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| return cs35l41_remove(cs35l41); | ||
| } | ||
|
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| #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 | ||
|
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| #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 | ||
|
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| 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, | ||
| }; | ||
|
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| module_i2c_driver(cs35l41_i2c_driver); | ||
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| MODULE_DESCRIPTION("I2C CS35L41 driver"); | ||
| MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>"); | ||
| MODULE_LICENSE("GPL"); |
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| // 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> | ||
|
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| #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> | ||
|
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| #include <sound/cs35l41.h> | ||
| #include "cs35l41.h" | ||
|
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| 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, | ||
| }; | ||
|
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| static const struct spi_device_id cs35l41_id_spi[] = { | ||
| { "cs35l40", 0 }, | ||
| { "cs35l41", 0 }, | ||
| {} | ||
| }; | ||
|
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| MODULE_DEVICE_TABLE(spi, cs35l41_id_spi); | ||
|
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| 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; | ||
|
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| spi = to_spi_device(cs35l41->dev); | ||
|
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| if (!spi) { | ||
| dev_err(cs35l41->dev, "%s: No SPI device\n", __func__); | ||
| return; | ||
| } | ||
|
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| 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); | ||
| } | ||
| } | ||
| } | ||
|
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| 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; | ||
|
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| cs35l41 = devm_kzalloc(&spi->dev, | ||
| sizeof(struct cs35l41_private), | ||
| GFP_KERNEL); | ||
| if (!cs35l41) | ||
| return -ENOMEM; | ||
|
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|
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| 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; | ||
| } | ||
|
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| cs35l41->dev = &spi->dev; | ||
| cs35l41->irq = spi->irq; | ||
| cs35l41->otp_setup = cs35l41_spi_otp_setup; | ||
|
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| return cs35l41_probe(cs35l41, pdata); | ||
| } | ||
|
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| static int cs35l41_spi_remove(struct spi_device *spi) | ||
| { | ||
| struct cs35l41_private *cs35l41 = spi_get_drvdata(spi); | ||
|
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| return cs35l41_remove(cs35l41); | ||
| } | ||
|
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| #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 | ||
|
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| #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 | ||
|
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| 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, | ||
| }; | ||
|
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| module_spi_driver(cs35l41_spi_driver); | ||
|
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| MODULE_DESCRIPTION("SPI CS35L41 driver"); | ||
| MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>"); | ||
| MODULE_LICENSE("GPL"); |
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