mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Uwe Kleine-König (The Capable Hub)andMark Brown
910714d4e7
While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. While touching all these arrays, unify indention and usage of commas. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Linus Walleij <linusw@kernel.org> Link: https://patch.msgid.link/ae2ff4898eb340bd8bcafb7b75443eb4a0ce3e76.1778692164.git.u.kleine-koenig@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
172 lines
4.4 KiB
C
172 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* max9877.c -- amp driver for max9877
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*
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* Copyright (C) 2009 Samsung Electronics Co.Ltd
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* Author: Joonyoung Shim <jy0922.shim@samsung.com>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "max9877.h"
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static const struct reg_default max9877_regs[] = {
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{ 0, 0x40 },
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{ 1, 0x00 },
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{ 2, 0x00 },
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{ 3, 0x00 },
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{ 4, 0x49 },
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};
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static const DECLARE_TLV_DB_RANGE(max9877_pgain_tlv,
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0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
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2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0)
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);
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static const DECLARE_TLV_DB_RANGE(max9877_output_tlv,
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0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
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8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
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16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
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24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0)
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);
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static const char *max9877_out_mode[] = {
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"INA -> SPK",
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"INA -> HP",
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"INA -> SPK and HP",
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"INB -> SPK",
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"INB -> HP",
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"INB -> SPK and HP",
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"INA + INB -> SPK",
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"INA + INB -> HP",
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"INA + INB -> SPK and HP",
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};
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static const char *max9877_osc_mode[] = {
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"1176KHz",
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"1100KHz",
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"700KHz",
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};
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static const struct soc_enum max9877_enum[] = {
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SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode),
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max9877_out_mode),
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SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET,
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ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
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};
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static const struct snd_kcontrol_new max9877_controls[] = {
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SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume",
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MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv),
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SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume",
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MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv),
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SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume",
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MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv),
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SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume",
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MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
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max9877_output_tlv),
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SOC_SINGLE("MAX9877 INB Stereo Switch",
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MAX9877_INPUT_MODE, 4, 1, 1),
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SOC_SINGLE("MAX9877 INA Stereo Switch",
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MAX9877_INPUT_MODE, 5, 1, 1),
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SOC_SINGLE("MAX9877 Zero-crossing detection Switch",
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MAX9877_INPUT_MODE, 6, 1, 0),
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SOC_SINGLE("MAX9877 Bypass Mode Switch",
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MAX9877_OUTPUT_MODE, 6, 1, 0),
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SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]),
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SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]),
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};
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static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("INA1"),
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SND_SOC_DAPM_INPUT("INA2"),
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SND_SOC_DAPM_INPUT("INB1"),
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SND_SOC_DAPM_INPUT("INB2"),
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SND_SOC_DAPM_INPUT("RXIN+"),
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SND_SOC_DAPM_INPUT("RXIN-"),
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SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),
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SND_SOC_DAPM_OUTPUT("OUT+"),
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SND_SOC_DAPM_OUTPUT("OUT-"),
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SND_SOC_DAPM_OUTPUT("HPL"),
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SND_SOC_DAPM_OUTPUT("HPR"),
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};
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static const struct snd_soc_dapm_route max9877_dapm_routes[] = {
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{ "SHDN", NULL, "INA1" },
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{ "SHDN", NULL, "INA2" },
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{ "SHDN", NULL, "INB1" },
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{ "SHDN", NULL, "INB2" },
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{ "OUT+", NULL, "RXIN+" },
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{ "OUT+", NULL, "SHDN" },
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{ "OUT-", NULL, "SHDN" },
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{ "OUT-", NULL, "RXIN-" },
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{ "HPL", NULL, "SHDN" },
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{ "HPR", NULL, "SHDN" },
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};
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static const struct snd_soc_component_driver max9877_component_driver = {
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.controls = max9877_controls,
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.num_controls = ARRAY_SIZE(max9877_controls),
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.dapm_widgets = max9877_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets),
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.dapm_routes = max9877_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes),
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};
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static const struct regmap_config max9877_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.reg_defaults = max9877_regs,
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.num_reg_defaults = ARRAY_SIZE(max9877_regs),
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.cache_type = REGCACHE_RBTREE,
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};
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static int max9877_i2c_probe(struct i2c_client *client)
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{
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struct regmap *regmap;
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int i;
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regmap = devm_regmap_init_i2c(client, &max9877_regmap);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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/* Ensure the device is in reset state */
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for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
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regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);
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return devm_snd_soc_register_component(&client->dev,
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&max9877_component_driver, NULL, 0);
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}
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static const struct i2c_device_id max9877_i2c_id[] = {
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{ .name = "max9877" },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
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static struct i2c_driver max9877_i2c_driver = {
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.driver = {
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.name = "max9877",
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},
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.probe = max9877_i2c_probe,
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.id_table = max9877_i2c_id,
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};
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module_i2c_driver(max9877_i2c_driver);
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MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
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MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
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MODULE_LICENSE("GPL");
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