451 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * ak4535.c -- AK4535 ALSA Soc Audio driver4 *5 * Copyright 2005 Openedhand Ltd.6 *7 * Author: Richard Purdie <richard@openedhand.com>8 *9 * Based on wm8753.c by Liam Girdwood10 */11 12#include <linux/module.h>13#include <linux/moduleparam.h>14#include <linux/init.h>15#include <linux/delay.h>16#include <linux/pm.h>17#include <linux/i2c.h>18#include <linux/regmap.h>19#include <linux/slab.h>20#include <sound/core.h>21#include <sound/pcm.h>22#include <sound/pcm_params.h>23#include <sound/soc.h>24#include <sound/initval.h>25 26#include "ak4535.h"27 28/* codec private data */29struct ak4535_priv {30 struct regmap *regmap;31 unsigned int sysclk;32};33 34/*35 * ak4535 register cache36 */37static const struct reg_default ak4535_reg_defaults[] = {38 { 0, 0x00 },39 { 1, 0x80 },40 { 2, 0x00 },41 { 3, 0x03 },42 { 4, 0x02 },43 { 5, 0x00 },44 { 6, 0x11 },45 { 7, 0x01 },46 { 8, 0x00 },47 { 9, 0x40 },48 { 10, 0x36 },49 { 11, 0x10 },50 { 12, 0x00 },51 { 13, 0x00 },52 { 14, 0x57 },53};54 55static bool ak4535_volatile(struct device *dev, unsigned int reg)56{57 switch (reg) {58 case AK4535_STATUS:59 return true;60 default:61 return false;62 }63}64 65static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};66static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};67static const char *ak4535_hp_out[] = {"Stereo", "Mono"};68static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};69static const char *ak4535_mic_select[] = {"Internal", "External"};70 71static const struct soc_enum ak4535_enum[] = {72 SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),73 SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),74 SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),75 SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),76 SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),77};78 79static const struct snd_kcontrol_new ak4535_snd_controls[] = {80 SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),81 SOC_ENUM("Mono 1 Output", ak4535_enum[1]),82 SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),83 SOC_ENUM("Headphone Output", ak4535_enum[2]),84 SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),85 SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),86 SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),87 SOC_ENUM("Mic Select", ak4535_enum[4]),88 SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),89 SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),90 SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),91 SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),92 SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),93 SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),94 SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),95 SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),96 SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),97 SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),98 SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),99};100 101/* Mono 1 Mixer */102static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {103 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),104 SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),105};106 107/* Stereo Mixer */108static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {109 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),110 SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),111 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),112};113 114/* Input Mixer */115static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {116 SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),117 SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),118};119 120/* Input mux */121static const struct snd_kcontrol_new ak4535_input_mux_control =122 SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);123 124/* HP L switch */125static const struct snd_kcontrol_new ak4535_hpl_control =126 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);127 128/* HP R switch */129static const struct snd_kcontrol_new ak4535_hpr_control =130 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);131 132/* mono 2 switch */133static const struct snd_kcontrol_new ak4535_mono2_control =134 SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);135 136/* Line out switch */137static const struct snd_kcontrol_new ak4535_line_control =138 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);139 140/* ak4535 dapm widgets */141static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {142 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,143 &ak4535_stereo_mixer_controls[0],144 ARRAY_SIZE(ak4535_stereo_mixer_controls)),145 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,146 &ak4535_mono1_mixer_controls[0],147 ARRAY_SIZE(ak4535_mono1_mixer_controls)),148 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,149 &ak4535_input_mixer_controls[0],150 ARRAY_SIZE(ak4535_input_mixer_controls)),151 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,152 &ak4535_input_mux_control),153 SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),154 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,155 &ak4535_mono2_control),156 /* speaker powersave bit */157 SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),158 SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,159 &ak4535_line_control),160 SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,161 &ak4535_hpl_control),162 SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,163 &ak4535_hpr_control),164 SND_SOC_DAPM_OUTPUT("LOUT"),165 SND_SOC_DAPM_OUTPUT("HPL"),166 SND_SOC_DAPM_OUTPUT("ROUT"),167 SND_SOC_DAPM_OUTPUT("HPR"),168 SND_SOC_DAPM_OUTPUT("SPP"),169 SND_SOC_DAPM_OUTPUT("SPN"),170 SND_SOC_DAPM_OUTPUT("MOUT1"),171 SND_SOC_DAPM_OUTPUT("MOUT2"),172 SND_SOC_DAPM_OUTPUT("MICOUT"),173 SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),174 SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),175 SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),176 SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),177 SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),178 SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),179 SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),180 SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),181 182 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),183 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),184 SND_SOC_DAPM_INPUT("MICIN"),185 SND_SOC_DAPM_INPUT("MICEXT"),186 SND_SOC_DAPM_INPUT("AUX"),187 SND_SOC_DAPM_INPUT("MIN"),188 SND_SOC_DAPM_INPUT("AIN"),189};190 191static const struct snd_soc_dapm_route ak4535_audio_map[] = {192 /*stereo mixer */193 {"Stereo Mixer", "Playback Switch", "DAC"},194 {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},195 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},196 197 /* mono1 mixer */198 {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},199 {"Mono1 Mixer", "Mono Playback Switch", "DAC"},200 201 /* Mic */202 {"Mic", NULL, "AIN"},203 {"Input Mux", "Internal", "Mic Int Bias"},204 {"Input Mux", "External", "Mic Ext Bias"},205 {"Mic Int Bias", NULL, "MICIN"},206 {"Mic Ext Bias", NULL, "MICEXT"},207 {"MICOUT", NULL, "Input Mux"},208 209 /* line out */210 {"LOUT", NULL, "Line Out Enable"},211 {"ROUT", NULL, "Line Out Enable"},212 {"Line Out Enable", "Switch", "Line Out"},213 {"Line Out", NULL, "Stereo Mixer"},214 215 /* mono1 out */216 {"MOUT1", NULL, "Mono Out"},217 {"Mono Out", NULL, "Mono1 Mixer"},218 219 /* left HP */220 {"HPL", NULL, "Left HP Enable"},221 {"Left HP Enable", "Switch", "HP L Amp"},222 {"HP L Amp", NULL, "Stereo Mixer"},223 224 /* right HP */225 {"HPR", NULL, "Right HP Enable"},226 {"Right HP Enable", "Switch", "HP R Amp"},227 {"HP R Amp", NULL, "Stereo Mixer"},228 229 /* speaker */230 {"SPP", NULL, "Speaker Enable"},231 {"SPN", NULL, "Speaker Enable"},232 {"Speaker Enable", "Switch", "Spk Amp"},233 {"Spk Amp", NULL, "MIN"},234 235 /* mono 2 */236 {"MOUT2", NULL, "Mono 2 Enable"},237 {"Mono 2 Enable", "Switch", "Stereo Mixer"},238 239 /* Aux In */240 {"Aux In", NULL, "AUX"},241 242 /* ADC */243 {"ADC", NULL, "Input Mixer"},244 {"Input Mixer", "Mic Capture Switch", "Mic"},245 {"Input Mixer", "Aux Capture Switch", "Aux In"},246};247 248static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,249 int clk_id, unsigned int freq, int dir)250{251 struct snd_soc_component *component = codec_dai->component;252 struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);253 254 ak4535->sysclk = freq;255 return 0;256}257 258static int ak4535_hw_params(struct snd_pcm_substream *substream,259 struct snd_pcm_hw_params *params,260 struct snd_soc_dai *dai)261{262 struct snd_soc_component *component = dai->component;263 struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);264 u8 mode2 = snd_soc_component_read(component, AK4535_MODE2) & ~(0x3 << 5);265 int rate = params_rate(params), fs = 256;266 267 if (rate)268 fs = ak4535->sysclk / rate;269 270 /* set fs */271 switch (fs) {272 case 1024:273 mode2 |= (0x2 << 5);274 break;275 case 512:276 mode2 |= (0x1 << 5);277 break;278 case 256:279 break;280 }281 282 /* set rate */283 snd_soc_component_write(component, AK4535_MODE2, mode2);284 return 0;285}286 287static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,288 unsigned int fmt)289{290 struct snd_soc_component *component = codec_dai->component;291 u8 mode1 = 0;292 293 /* interface format */294 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {295 case SND_SOC_DAIFMT_I2S:296 mode1 = 0x0002;297 break;298 case SND_SOC_DAIFMT_LEFT_J:299 mode1 = 0x0001;300 break;301 default:302 return -EINVAL;303 }304 305 /* use 32 fs for BCLK to save power */306 mode1 |= 0x4;307 308 snd_soc_component_write(component, AK4535_MODE1, mode1);309 return 0;310}311 312static int ak4535_mute(struct snd_soc_dai *dai, int mute, int direction)313{314 struct snd_soc_component *component = dai->component;315 u16 mute_reg = snd_soc_component_read(component, AK4535_DAC);316 317 if (!mute)318 snd_soc_component_write(component, AK4535_DAC, mute_reg & ~0x20);319 else320 snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20);321 return 0;322}323 324static int ak4535_set_bias_level(struct snd_soc_component *component,325 enum snd_soc_bias_level level)326{327 switch (level) {328 case SND_SOC_BIAS_ON:329 snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0);330 break;331 case SND_SOC_BIAS_PREPARE:332 snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0x20);333 break;334 case SND_SOC_BIAS_STANDBY:335 snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0x80);336 snd_soc_component_update_bits(component, AK4535_PM2, 0x80, 0);337 break;338 case SND_SOC_BIAS_OFF:339 snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0);340 break;341 }342 return 0;343}344 345#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\346 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\347 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)348 349static const struct snd_soc_dai_ops ak4535_dai_ops = {350 .hw_params = ak4535_hw_params,351 .set_fmt = ak4535_set_dai_fmt,352 .mute_stream = ak4535_mute,353 .set_sysclk = ak4535_set_dai_sysclk,354 .no_capture_mute = 1,355};356 357static struct snd_soc_dai_driver ak4535_dai = {358 .name = "ak4535-hifi",359 .playback = {360 .stream_name = "Playback",361 .channels_min = 1,362 .channels_max = 2,363 .rates = AK4535_RATES,364 .formats = SNDRV_PCM_FMTBIT_S16_LE,},365 .capture = {366 .stream_name = "Capture",367 .channels_min = 1,368 .channels_max = 2,369 .rates = AK4535_RATES,370 .formats = SNDRV_PCM_FMTBIT_S16_LE,},371 .ops = &ak4535_dai_ops,372};373 374static int ak4535_resume(struct snd_soc_component *component)375{376 snd_soc_component_cache_sync(component);377 return 0;378}379 380static const struct regmap_config ak4535_regmap = {381 .reg_bits = 8,382 .val_bits = 8,383 384 .max_register = AK4535_STATUS,385 .volatile_reg = ak4535_volatile,386 387 .cache_type = REGCACHE_RBTREE,388 .reg_defaults = ak4535_reg_defaults,389 .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),390};391 392static const struct snd_soc_component_driver soc_component_dev_ak4535 = {393 .resume = ak4535_resume,394 .set_bias_level = ak4535_set_bias_level,395 .controls = ak4535_snd_controls,396 .num_controls = ARRAY_SIZE(ak4535_snd_controls),397 .dapm_widgets = ak4535_dapm_widgets,398 .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),399 .dapm_routes = ak4535_audio_map,400 .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),401 .suspend_bias_off = 1,402 .idle_bias_on = 1,403 .use_pmdown_time = 1,404 .endianness = 1,405};406 407static int ak4535_i2c_probe(struct i2c_client *i2c)408{409 struct ak4535_priv *ak4535;410 int ret;411 412 ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),413 GFP_KERNEL);414 if (ak4535 == NULL)415 return -ENOMEM;416 417 ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);418 if (IS_ERR(ak4535->regmap)) {419 ret = PTR_ERR(ak4535->regmap);420 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);421 return ret;422 }423 424 i2c_set_clientdata(i2c, ak4535);425 426 ret = devm_snd_soc_register_component(&i2c->dev,427 &soc_component_dev_ak4535, &ak4535_dai, 1);428 429 return ret;430}431 432static const struct i2c_device_id ak4535_i2c_id[] = {433 { "ak4535" },434 { }435};436MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);437 438static struct i2c_driver ak4535_i2c_driver = {439 .driver = {440 .name = "ak4535",441 },442 .probe = ak4535_i2c_probe,443 .id_table = ak4535_i2c_id,444};445 446module_i2c_driver(ak4535_i2c_driver);447 448MODULE_DESCRIPTION("Soc AK4535 driver");449MODULE_AUTHOR("Richard Purdie");450MODULE_LICENSE("GPL");451