1 /* 2 * max9867.c -- max9867 ALSA SoC Audio driver 3 * 4 * Copyright 2013-15 Maxim Integrated Products 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #include <linux/delay.h> 12 #include <linux/i2c.h> 13 #include <linux/module.h> 14 #include <linux/regmap.h> 15 #include <sound/pcm_params.h> 16 #include <sound/soc.h> 17 #include <sound/tlv.h> 18 #include "max9867.h" 19 20 static const char *const max9867_spmode[] = { 21 "Stereo Diff", "Mono Diff", 22 "Stereo Cap", "Mono Cap", 23 "Stereo Single", "Mono Single", 24 "Stereo Single Fast", "Mono Single Fast" 25 }; 26 static const char *const max9867_sidetone_text[] = { 27 "None", "Left", "Right", "LeftRight", "LeftRightDiv2", 28 }; 29 static const char *const max9867_filter_text[] = {"IIR", "FIR"}; 30 31 static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7, 32 max9867_filter_text); 33 static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0, 34 max9867_spmode); 35 static SOC_ENUM_SINGLE_DECL(max9867_sidetone, MAX9867_DACGAIN, 6, 36 max9867_sidetone_text); 37 static DECLARE_TLV_DB_SCALE(max9860_capture_tlv, -600, 200, 0); 38 static DECLARE_TLV_DB_SCALE(max9860_mic_tlv, 2000, 100, 1); 39 static DECLARE_TLV_DB_SCALE(max9860_adc_left_tlv, -1200, 100, 1); 40 static DECLARE_TLV_DB_SCALE(max9860_adc_right_tlv, -1200, 100, 1); 41 static const unsigned int max98088_micboost_tlv[] = { 42 TLV_DB_RANGE_HEAD(2), 43 0, 1, TLV_DB_SCALE_ITEM(0, 2000, 0), 44 2, 2, TLV_DB_SCALE_ITEM(3000, 0, 0), 45 }; 46 47 static const struct snd_kcontrol_new max9867_snd_controls[] = { 48 SOC_DOUBLE_R("Master Playback Volume", MAX9867_LEFTVOL, 49 MAX9867_RIGHTVOL, 0, 63, 1), 50 SOC_DOUBLE_R_TLV("Capture Volume", MAX9867_LEFTMICGAIN, 51 MAX9867_RIGHTMICGAIN, 52 0, 15, 1, max9860_capture_tlv), 53 SOC_DOUBLE_R_TLV("Mic Volume", MAX9867_LEFTMICGAIN, 54 MAX9867_RIGHTMICGAIN, 0, 31, 1, max9860_mic_tlv), 55 SOC_DOUBLE_R_TLV("Mic Boost Volume", MAX9867_LEFTMICGAIN, 56 MAX9867_RIGHTMICGAIN, 5, 3, 0, max98088_micboost_tlv), 57 SOC_ENUM("Digital Sidetone Src", max9867_sidetone), 58 SOC_SINGLE("Sidetone Volume", MAX9867_DACGAIN, 0, 31, 1), 59 SOC_SINGLE("DAC Volume", MAX9867_DACLEVEL, 4, 3, 0), 60 SOC_SINGLE("DAC Attenuation", MAX9867_DACLEVEL, 0, 15, 1), 61 SOC_SINGLE_TLV("ADC Left Volume", MAX9867_ADCLEVEL, 62 4, 15, 1, max9860_adc_left_tlv), 63 SOC_SINGLE_TLV("ADC Right Volume", MAX9867_ADCLEVEL, 64 0, 15, 1, max9860_adc_right_tlv), 65 SOC_ENUM("Speaker Mode", max9867_spkmode), 66 SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0), 67 SOC_SINGLE("ZCD Switch", MAX9867_MODECONFIG, 5, 1, 0), 68 SOC_ENUM("DSP Filter", max9867_filter), 69 }; 70 71 static const char *const max9867_mux[] = {"None", "Mic", "Line", "Mic_Line"}; 72 73 static SOC_ENUM_SINGLE_DECL(max9867_mux_enum, 74 MAX9867_INPUTCONFIG, MAX9867_INPUT_SHIFT, 75 max9867_mux); 76 77 static const struct snd_kcontrol_new max9867_dapm_mux_controls = 78 SOC_DAPM_ENUM("Route", max9867_mux_enum); 79 80 static const struct snd_kcontrol_new max9867_left_dapm_control = 81 SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 6, 1, 0); 82 static const struct snd_kcontrol_new max9867_right_dapm_control = 83 SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 5, 1, 0); 84 static const struct snd_kcontrol_new max9867_line_dapm_control = 85 SOC_DAPM_SINGLE("Switch", MAX9867_LEFTLINELVL, 6, 1, 1); 86 87 static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = { 88 SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), 89 SND_SOC_DAPM_DAC("Left DAC", NULL, MAX9867_PWRMAN, 3, 0), 90 SND_SOC_DAPM_DAC("Right DAC", NULL, MAX9867_PWRMAN, 2, 0), 91 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), 92 SND_SOC_DAPM_OUTPUT("HPOUT"), 93 94 SND_SOC_DAPM_AIF_IN("DAI_IN", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0), 95 SND_SOC_DAPM_ADC("Left ADC", "HiFi Capture", MAX9867_PWRMAN, 1, 0), 96 SND_SOC_DAPM_ADC("Right ADC", "HiFi Capture", MAX9867_PWRMAN, 0, 0), 97 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, 98 &max9867_dapm_mux_controls), 99 100 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), 101 SND_SOC_DAPM_SWITCH("Left Line", MAX9867_LEFTLINELVL, 6, 1, 102 &max9867_left_dapm_control), 103 SND_SOC_DAPM_SWITCH("Right Line", MAX9867_RIGTHLINELVL, 6, 1, 104 &max9867_right_dapm_control), 105 SND_SOC_DAPM_SWITCH("Line Mixer", SND_SOC_NOPM, 0, 0, 106 &max9867_line_dapm_control), 107 SND_SOC_DAPM_INPUT("LINE_IN"), 108 }; 109 110 static const struct snd_soc_dapm_route max9867_audio_map[] = { 111 {"Left DAC", NULL, "DAI_OUT"}, 112 {"Right DAC", NULL, "DAI_OUT"}, 113 {"Output Mixer", NULL, "Left DAC"}, 114 {"Output Mixer", NULL, "Right DAC"}, 115 {"HPOUT", NULL, "Output Mixer"}, 116 117 {"Left ADC", NULL, "DAI_IN"}, 118 {"Right ADC", NULL, "DAI_IN"}, 119 {"Input Mixer", NULL, "Left ADC"}, 120 {"Input Mixer", NULL, "Right ADC"}, 121 {"Input Mux", "Line", "Input Mixer"}, 122 {"Input Mux", "Mic", "Input Mixer"}, 123 {"Input Mux", "Mic_Line", "Input Mixer"}, 124 {"Right Line", "Switch", "Input Mux"}, 125 {"Left Line", "Switch", "Input Mux"}, 126 {"LINE_IN", NULL, "Left Line"}, 127 {"LINE_IN", NULL, "Right Line"}, 128 }; 129 130 enum rates { 131 pcm_rate_8, pcm_rate_16, pcm_rate_24, 132 pcm_rate_32, pcm_rate_44, 133 pcm_rate_48, max_pcm_rate, 134 }; 135 136 struct ni_div_rates { 137 u32 mclk; 138 u16 ni[max_pcm_rate]; 139 } ni_div[] = { 140 {11289600, {0x116A, 0x22D4, 0x343F, 0x45A9, 0x6000, 0x687D} }, 141 {12000000, {0x1062, 0x20C5, 0x3127, 0x4189, 0x5A51, 0x624E} }, 142 {12288000, {0x1000, 0x2000, 0x3000, 0x4000, 0x5833, 0x6000} }, 143 {13000000, {0x0F20, 0x1E3F, 0x2D5F, 0x3C7F, 0x535F, 0x5ABE} }, 144 {19200000, {0x0A3D, 0x147B, 0x1EB8, 0x28F6, 0x3873, 0x3D71} }, 145 {24000000, {0x1062, 0x20C5, 0x1893, 0x4189, 0x5A51, 0x624E} }, 146 {26000000, {0x0F20, 0x1E3F, 0x16AF, 0x3C7F, 0x535F, 0x5ABE} }, 147 {27000000, {0x0E90, 0x1D21, 0x15D8, 0x3A41, 0x5048, 0x5762} }, 148 }; 149 150 static inline int get_ni_value(int mclk, int rate) 151 { 152 int i, ret = 0; 153 154 /* find the closest rate index*/ 155 for (i = 0; i < ARRAY_SIZE(ni_div); i++) { 156 if (ni_div[i].mclk >= mclk) 157 break; 158 } 159 if (i == ARRAY_SIZE(ni_div)) 160 return -EINVAL; 161 162 switch (rate) { 163 case 8000: 164 return ni_div[i].ni[pcm_rate_8]; 165 case 16000: 166 return ni_div[i].ni[pcm_rate_16]; 167 case 32000: 168 return ni_div[i].ni[pcm_rate_32]; 169 case 44100: 170 return ni_div[i].ni[pcm_rate_44]; 171 case 48000: 172 return ni_div[i].ni[pcm_rate_48]; 173 default: 174 pr_err("%s wrong rate %d\n", __func__, rate); 175 ret = -EINVAL; 176 } 177 return ret; 178 } 179 180 static int max9867_dai_hw_params(struct snd_pcm_substream *substream, 181 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 182 { 183 struct snd_soc_codec *codec = dai->codec; 184 struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); 185 unsigned int ni_h, ni_l; 186 int value; 187 188 value = get_ni_value(max9867->sysclk, params_rate(params)); 189 if (value < 0) 190 return value; 191 192 ni_h = (0xFF00 & value) >> 8; 193 ni_l = 0x00FF & value; 194 /* set up the ni value */ 195 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, 196 MAX9867_NI_HIGH_MASK, ni_h); 197 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, 198 MAX9867_NI_LOW_MASK, ni_l); 199 if (!max9867->master) { 200 /* 201 * digital pll locks on to any externally supplied LRCLK signal 202 * and also enable rapid lock mode. 203 */ 204 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, 205 MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK); 206 regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, 207 MAX9867_PLL, MAX9867_PLL); 208 } else { 209 unsigned long int bclk_rate, pclk_bclk_ratio; 210 int bclk_value; 211 212 bclk_rate = params_rate(params) * 2 * params_width(params); 213 pclk_bclk_ratio = max9867->pclk/bclk_rate; 214 switch (params_width(params)) { 215 case 8: 216 case 16: 217 switch (pclk_bclk_ratio) { 218 case 2: 219 bclk_value = MAX9867_IFC1B_PCLK_2; 220 break; 221 case 4: 222 bclk_value = MAX9867_IFC1B_PCLK_4; 223 break; 224 case 8: 225 bclk_value = MAX9867_IFC1B_PCLK_8; 226 break; 227 case 16: 228 bclk_value = MAX9867_IFC1B_PCLK_16; 229 break; 230 default: 231 dev_err(codec->dev, 232 "unsupported sampling rate\n"); 233 return -EINVAL; 234 } 235 break; 236 case 24: 237 bclk_value = MAX9867_IFC1B_24BIT; 238 break; 239 case 32: 240 bclk_value = MAX9867_IFC1B_32BIT; 241 break; 242 default: 243 dev_err(codec->dev, "unsupported sampling rate\n"); 244 return -EINVAL; 245 } 246 regmap_update_bits(max9867->regmap, MAX9867_IFC1B, 247 MAX9867_IFC1B_BCLK_MASK, bclk_value); 248 } 249 return 0; 250 } 251 252 static int max9867_prepare(struct snd_pcm_substream *substream, 253 struct snd_soc_dai *dai) 254 { 255 struct snd_soc_codec *codec = dai->codec; 256 struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); 257 258 regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, 259 MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK); 260 return 0; 261 } 262 263 static int max9867_mute(struct snd_soc_dai *dai, int mute) 264 { 265 struct snd_soc_codec *codec = dai->codec; 266 struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); 267 268 if (mute) 269 regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, 270 MAX9867_DAC_MUTE_MASK, MAX9867_DAC_MUTE_MASK); 271 else 272 regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, 273 MAX9867_DAC_MUTE_MASK, 0); 274 return 0; 275 } 276 277 static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai, 278 int clk_id, unsigned int freq, int dir) 279 { 280 struct snd_soc_codec *codec = codec_dai->codec; 281 struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); 282 int value = 0; 283 284 /* Set the prescaler based on the master clock frequency*/ 285 if (freq >= 10000000 && freq <= 20000000) { 286 value |= MAX9867_PSCLK_10_20; 287 max9867->pclk = freq; 288 } else if (freq >= 20000000 && freq <= 40000000) { 289 value |= MAX9867_PSCLK_20_40; 290 max9867->pclk = freq/2; 291 } else if (freq >= 40000000 && freq <= 60000000) { 292 value |= MAX9867_PSCLK_40_60; 293 max9867->pclk = freq/4; 294 } else { 295 pr_err("bad clock frequency %d", freq); 296 return -EINVAL; 297 } 298 value = value << MAX9867_PSCLK_SHIFT; 299 max9867->sysclk = freq; 300 /* exact integer mode is not supported */ 301 value &= ~MAX9867_FREQ_MASK; 302 regmap_update_bits(max9867->regmap, MAX9867_SYSCLK, 303 MAX9867_PSCLK_MASK, value); 304 return 0; 305 } 306 307 static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai, 308 unsigned int fmt) 309 { 310 struct snd_soc_codec *codec = codec_dai->codec; 311 struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); 312 u8 iface1A = 0, iface1B = 0; 313 int ret; 314 315 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 316 case SND_SOC_DAIFMT_CBM_CFM: 317 max9867->master = 1; 318 iface1A |= MAX9867_MASTER; 319 break; 320 case SND_SOC_DAIFMT_CBS_CFS: 321 max9867->master = 0; 322 iface1A &= ~MAX9867_MASTER; 323 break; 324 default: 325 return -EINVAL; 326 } 327 328 /* for i2s compatible mode */ 329 iface1A |= MAX9867_I2S_DLY; 330 /* SDOUT goes to hiz state after all data is transferred */ 331 iface1A |= MAX9867_SDOUT_HIZ; 332 333 /* Clock inversion bits, BCI and WCI */ 334 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 335 case SND_SOC_DAIFMT_NB_NF: 336 break; 337 case SND_SOC_DAIFMT_IB_IF: 338 iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE; 339 break; 340 case SND_SOC_DAIFMT_IB_NF: 341 iface1A |= MAX9867_BCI_MODE; 342 break; 343 case SND_SOC_DAIFMT_NB_IF: 344 iface1A |= MAX9867_WCI_MODE; 345 break; 346 default: 347 return -EINVAL; 348 } 349 350 ret = regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A); 351 ret = regmap_write(max9867->regmap, MAX9867_IFC1B, iface1B); 352 return 0; 353 } 354 355 static struct snd_soc_dai_ops max9867_dai_ops = { 356 .set_fmt = max9867_dai_set_fmt, 357 .set_sysclk = max9867_set_dai_sysclk, 358 .prepare = max9867_prepare, 359 .digital_mute = max9867_mute, 360 .hw_params = max9867_dai_hw_params, 361 }; 362 363 #define MAX9867_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\ 364 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 365 #define MAX9867_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) 366 367 static struct snd_soc_dai_driver max9867_dai[] = { 368 { 369 .name = "max9867-aif1", 370 .playback = { 371 .stream_name = "HiFi Playback", 372 .channels_min = 1, 373 .channels_max = 2, 374 .rates = MAX9867_RATES, 375 .formats = MAX9867_FORMATS, 376 }, 377 .capture = { 378 .stream_name = "HiFi Capture", 379 .channels_min = 1, 380 .channels_max = 2, 381 .rates = MAX9867_RATES, 382 .formats = MAX9867_FORMATS, 383 }, 384 .ops = &max9867_dai_ops, 385 } 386 }; 387 388 #ifdef CONFIG_PM_SLEEP 389 static int max9867_suspend(struct device *dev) 390 { 391 struct max9867_priv *max9867 = dev_get_drvdata(dev); 392 393 /* Drop down to power saving mode when system is suspended */ 394 regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, 395 MAX9867_SHTDOWN_MASK, ~MAX9867_SHTDOWN_MASK); 396 return 0; 397 } 398 399 static int max9867_resume(struct device *dev) 400 { 401 struct max9867_priv *max9867 = dev_get_drvdata(dev); 402 403 regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, 404 MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK); 405 return 0; 406 } 407 #endif 408 409 static int max9867_probe(struct snd_soc_codec *codec) 410 { 411 struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); 412 413 dev_dbg(codec->dev, "max98090_probe\n"); 414 max9867->codec = codec; 415 return 0; 416 } 417 418 static struct snd_soc_codec_driver max9867_codec = { 419 .probe = max9867_probe, 420 .controls = max9867_snd_controls, 421 .num_controls = ARRAY_SIZE(max9867_snd_controls), 422 .dapm_routes = max9867_audio_map, 423 .num_dapm_routes = ARRAY_SIZE(max9867_audio_map), 424 .dapm_widgets = max9867_dapm_widgets, 425 .num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets), 426 }; 427 428 static bool max9867_volatile_register(struct device *dev, unsigned int reg) 429 { 430 switch (reg) { 431 case MAX9867_STATUS: 432 case MAX9867_JACKSTATUS: 433 case MAX9867_AUXHIGH: 434 case MAX9867_AUXLOW: 435 return true; 436 default: 437 return false; 438 } 439 } 440 441 static const struct reg_default max9867_reg[] = { 442 { 0x04, 0x00 }, 443 { 0x05, 0x00 }, 444 { 0x06, 0x00 }, 445 { 0x07, 0x00 }, 446 { 0x08, 0x00 }, 447 { 0x09, 0x00 }, 448 { 0x0A, 0x00 }, 449 { 0x0B, 0x00 }, 450 { 0x0C, 0x00 }, 451 { 0x0D, 0x00 }, 452 { 0x0E, 0x00 }, 453 { 0x0F, 0x00 }, 454 { 0x10, 0x00 }, 455 { 0x11, 0x00 }, 456 { 0x12, 0x00 }, 457 { 0x13, 0x00 }, 458 { 0x14, 0x00 }, 459 { 0x15, 0x00 }, 460 { 0x16, 0x00 }, 461 { 0x17, 0x00 }, 462 }; 463 464 static const struct regmap_config max9867_regmap = { 465 .reg_bits = 8, 466 .val_bits = 8, 467 .max_register = MAX9867_REVISION, 468 .reg_defaults = max9867_reg, 469 .num_reg_defaults = ARRAY_SIZE(max9867_reg), 470 .volatile_reg = max9867_volatile_register, 471 .cache_type = REGCACHE_RBTREE, 472 }; 473 474 static int max9867_i2c_probe(struct i2c_client *i2c, 475 const struct i2c_device_id *id) 476 { 477 struct max9867_priv *max9867; 478 int ret = 0, reg; 479 480 max9867 = devm_kzalloc(&i2c->dev, 481 sizeof(*max9867), GFP_KERNEL); 482 if (!max9867) 483 return -ENOMEM; 484 485 i2c_set_clientdata(i2c, max9867); 486 max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap); 487 if (IS_ERR(max9867->regmap)) { 488 ret = PTR_ERR(max9867->regmap); 489 dev_err(&i2c->dev, 490 "Failed to allocate regmap: %d\n", ret); 491 return ret; 492 } 493 ret = regmap_read(max9867->regmap, 494 MAX9867_REVISION, ®); 495 if (ret < 0) { 496 dev_err(&i2c->dev, "Failed to read: %d\n", ret); 497 return ret; 498 } 499 dev_info(&i2c->dev, "device revision: %x\n", reg); 500 ret = snd_soc_register_codec(&i2c->dev, &max9867_codec, 501 max9867_dai, ARRAY_SIZE(max9867_dai)); 502 if (ret < 0) { 503 dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); 504 return ret; 505 } 506 return ret; 507 } 508 509 static int max9867_i2c_remove(struct i2c_client *client) 510 { 511 snd_soc_unregister_codec(&client->dev); 512 return 0; 513 } 514 515 static const struct i2c_device_id max9867_i2c_id[] = { 516 { "max9867", 0 }, 517 { } 518 }; 519 520 static const struct of_device_id max9867_of_match[] = { 521 { .compatible = "maxim,max9867", }, 522 { } 523 }; 524 525 MODULE_DEVICE_TABLE(i2c, max9867_i2c_id); 526 527 static const struct dev_pm_ops max9867_pm_ops = { 528 SET_SYSTEM_SLEEP_PM_OPS(max9867_suspend, max9867_resume) 529 }; 530 531 static struct i2c_driver max9867_i2c_driver = { 532 .driver = { 533 .name = "max9867", 534 .of_match_table = of_match_ptr(max9867_of_match), 535 .pm = &max9867_pm_ops, 536 }, 537 .probe = max9867_i2c_probe, 538 .remove = max9867_i2c_remove, 539 .id_table = max9867_i2c_id, 540 }; 541 542 module_i2c_driver(max9867_i2c_driver); 543 544 MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); 545 MODULE_DESCRIPTION("ALSA SoC MAX9867 driver"); 546 MODULE_LICENSE("GPL"); 547