1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ak4535.c -- AK4535 ALSA Soc Audio driver 4 * 5 * Copyright 2005 Openedhand Ltd. 6 * 7 * Author: Richard Purdie <richard@openedhand.com> 8 * 9 * Based on wm8753.c by Liam Girdwood 10 */ 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 */ 29 struct ak4535_priv { 30 struct regmap *regmap; 31 unsigned int sysclk; 32 }; 33 34 /* 35 * ak4535 register cache 36 */ 37 static 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 55 static 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 65 static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"}; 66 static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"}; 67 static const char *ak4535_hp_out[] = {"Stereo", "Mono"}; 68 static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"}; 69 static const char *ak4535_mic_select[] = {"Internal", "External"}; 70 71 static 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 79 static 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 */ 102 static 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 */ 108 static 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 */ 115 static 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 */ 121 static const struct snd_kcontrol_new ak4535_input_mux_control = 122 SOC_DAPM_ENUM("Input Select", ak4535_enum[4]); 123 124 /* HP L switch */ 125 static const struct snd_kcontrol_new ak4535_hpl_control = 126 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1); 127 128 /* HP R switch */ 129 static const struct snd_kcontrol_new ak4535_hpr_control = 130 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1); 131 132 /* mono 2 switch */ 133 static const struct snd_kcontrol_new ak4535_mono2_control = 134 SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0); 135 136 /* Line out switch */ 137 static const struct snd_kcontrol_new ak4535_line_control = 138 SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0); 139 140 /* ak4535 dapm widgets */ 141 static 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 }; 190 191 static 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 }; 247 248 static 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 } 257 258 static 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 } 286 287 static 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 } 311 312 static 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 else 320 snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20); 321 return 0; 322 } 323 324 static 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) 348 349 static 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 }; 356 357 static 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 }; 373 374 static int ak4535_resume(struct snd_soc_component *component) 375 { 376 snd_soc_component_cache_sync(component); 377 return 0; 378 } 379 380 static 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 }; 391 392 static 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 }; 406 407 static 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 } 431 432 static const struct i2c_device_id ak4535_i2c_id[] = { 433 { "ak4535", 0 }, 434 { } 435 }; 436 MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id); 437 438 static struct i2c_driver ak4535_i2c_driver = { 439 .driver = { 440 .name = "ak4535", 441 }, 442 .probe = ak4535_i2c_probe, 443 .id_table = ak4535_i2c_id, 444 }; 445 446 module_i2c_driver(ak4535_i2c_driver); 447 448 MODULE_DESCRIPTION("Soc AK4535 driver"); 449 MODULE_AUTHOR("Richard Purdie"); 450 MODULE_LICENSE("GPL"); 451