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172 lines
4.5 KiB
172 lines
4.5 KiB
// 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 <[email protected]> |
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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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const struct i2c_device_id *id) |
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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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{ "max9877", 0 }, |
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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 <[email protected]>"); |
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MODULE_LICENSE("GPL");
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