172 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * max9877.c -- amp driver for max98774 *5 * Copyright (C) 2009 Samsung Electronics Co.Ltd6 * Author: Joonyoung Shim <jy0922.shim@samsung.com>7 */8 9#include <linux/module.h>10#include <linux/init.h>11#include <linux/i2c.h>12#include <linux/regmap.h>13#include <sound/soc.h>14#include <sound/tlv.h>15 16#include "max9877.h"17 18static const struct reg_default max9877_regs[] = {19 { 0, 0x40 },20 { 1, 0x00 },21 { 2, 0x00 },22 { 3, 0x00 },23 { 4, 0x49 },24};25 26static const DECLARE_TLV_DB_RANGE(max9877_pgain_tlv,27 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),28 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0)29);30 31static const DECLARE_TLV_DB_RANGE(max9877_output_tlv,32 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),33 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),34 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),35 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0)36);37 38static const char *max9877_out_mode[] = {39 "INA -> SPK",40 "INA -> HP",41 "INA -> SPK and HP",42 "INB -> SPK",43 "INB -> HP",44 "INB -> SPK and HP",45 "INA + INB -> SPK",46 "INA + INB -> HP",47 "INA + INB -> SPK and HP",48};49 50static const char *max9877_osc_mode[] = {51 "1176KHz",52 "1100KHz",53 "700KHz",54};55 56static const struct soc_enum max9877_enum[] = {57 SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode),58 max9877_out_mode),59 SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET,60 ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),61};62 63static const struct snd_kcontrol_new max9877_controls[] = {64 SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume",65 MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv),66 SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume",67 MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv),68 SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume",69 MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv),70 SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume",71 MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,72 max9877_output_tlv),73 SOC_SINGLE("MAX9877 INB Stereo Switch",74 MAX9877_INPUT_MODE, 4, 1, 1),75 SOC_SINGLE("MAX9877 INA Stereo Switch",76 MAX9877_INPUT_MODE, 5, 1, 1),77 SOC_SINGLE("MAX9877 Zero-crossing detection Switch",78 MAX9877_INPUT_MODE, 6, 1, 0),79 SOC_SINGLE("MAX9877 Bypass Mode Switch",80 MAX9877_OUTPUT_MODE, 6, 1, 0),81 SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]),82 SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]),83};84 85static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {86SND_SOC_DAPM_INPUT("INA1"),87SND_SOC_DAPM_INPUT("INA2"),88SND_SOC_DAPM_INPUT("INB1"),89SND_SOC_DAPM_INPUT("INB2"),90SND_SOC_DAPM_INPUT("RXIN+"),91SND_SOC_DAPM_INPUT("RXIN-"),92 93SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),94 95SND_SOC_DAPM_OUTPUT("OUT+"),96SND_SOC_DAPM_OUTPUT("OUT-"),97SND_SOC_DAPM_OUTPUT("HPL"),98SND_SOC_DAPM_OUTPUT("HPR"),99};100 101static const struct snd_soc_dapm_route max9877_dapm_routes[] = {102 { "SHDN", NULL, "INA1" },103 { "SHDN", NULL, "INA2" },104 { "SHDN", NULL, "INB1" },105 { "SHDN", NULL, "INB2" },106 107 { "OUT+", NULL, "RXIN+" },108 { "OUT+", NULL, "SHDN" },109 110 { "OUT-", NULL, "SHDN" },111 { "OUT-", NULL, "RXIN-" },112 113 { "HPL", NULL, "SHDN" },114 { "HPR", NULL, "SHDN" },115};116 117static const struct snd_soc_component_driver max9877_component_driver = {118 .controls = max9877_controls,119 .num_controls = ARRAY_SIZE(max9877_controls),120 121 .dapm_widgets = max9877_dapm_widgets,122 .num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets),123 .dapm_routes = max9877_dapm_routes,124 .num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes),125};126 127static const struct regmap_config max9877_regmap = {128 .reg_bits = 8,129 .val_bits = 8,130 131 .reg_defaults = max9877_regs,132 .num_reg_defaults = ARRAY_SIZE(max9877_regs),133 .cache_type = REGCACHE_RBTREE,134};135 136static int max9877_i2c_probe(struct i2c_client *client)137{138 struct regmap *regmap;139 int i;140 141 regmap = devm_regmap_init_i2c(client, &max9877_regmap);142 if (IS_ERR(regmap))143 return PTR_ERR(regmap);144 145 /* Ensure the device is in reset state */146 for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)147 regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);148 149 return devm_snd_soc_register_component(&client->dev,150 &max9877_component_driver, NULL, 0);151}152 153static const struct i2c_device_id max9877_i2c_id[] = {154 { "max9877" },155 { }156};157MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);158 159static struct i2c_driver max9877_i2c_driver = {160 .driver = {161 .name = "max9877",162 },163 .probe = max9877_i2c_probe,164 .id_table = max9877_i2c_id,165};166 167module_i2c_driver(max9877_i2c_driver);168 169MODULE_DESCRIPTION("ASoC MAX9877 amp driver");170MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");171MODULE_LICENSE("GPL");172