sound/soc/codecs/max9877.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * max9877.c  --  amp driver for max9877
   4  *
   5  * Copyright (C) 2009 Samsung Electronics Co.Ltd
   6  * 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
  18 static const struct reg_default max9877_regs[] = {
  19         { 0, 0x40 },
  20         { 1, 0x00 },
  21         { 2, 0x00 },
  22         { 3, 0x00 },
  23         { 4, 0x49 },
  24 };
  25
  26 static 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
  31 static 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
  38 static 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
  50 static const char *max9877_osc_mode[] = {
  51         "1176KHz",
  52         "1100KHz",
  53         "700KHz",
  54 };
  55
  56 static 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
  63 static 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
  85 static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {
  86 SND_SOC_DAPM_INPUT("INA1"),
  87 SND_SOC_DAPM_INPUT("INA2"),
  88 SND_SOC_DAPM_INPUT("INB1"),
  89 SND_SOC_DAPM_INPUT("INB2"),
  90 SND_SOC_DAPM_INPUT("RXIN+"),
  91 SND_SOC_DAPM_INPUT("RXIN-"),
  92
  93 SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),
  94
  95 SND_SOC_DAPM_OUTPUT("OUT+"),
  96 SND_SOC_DAPM_OUTPUT("OUT-"),
  97 SND_SOC_DAPM_OUTPUT("HPL"),
  98 SND_SOC_DAPM_OUTPUT("HPR"),
  99 };
 100
 101 static 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
 117 static 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
 127 static 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
 136 static int max9877_i2c_probe(struct i2c_client *client,
 137                              const struct i2c_device_id *id)
 138 {
 139         struct regmap *regmap;
 140         int i;
 141
 142         regmap = devm_regmap_init_i2c(client, &max9877_regmap);
 143         if (IS_ERR(regmap))
 144                 return PTR_ERR(regmap);
 145
 146         /* Ensure the device is in reset state */
 147         for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
 148                 regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);
 149
 150         return devm_snd_soc_register_component(&client->dev,
 151                         &max9877_component_driver, NULL, 0);
 152 }
 153
 154 static const struct i2c_device_id max9877_i2c_id[] = {
 155         { "max9877", 0 },
 156         { }
 157 };
 158 MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
 159
 160 static struct i2c_driver max9877_i2c_driver = {
 161         .driver = {
 162                 .name = "max9877",
 163         },
 164         .probe = max9877_i2c_probe,
 165         .id_table = max9877_i2c_id,
 166 };
 167
 168 module_i2c_driver(max9877_i2c_driver);
 169
 170 MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
 171 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 172 MODULE_LICENSE("GPL");