1 /* 2 * wm8580.c -- WM8580 ALSA Soc Audio driver 3 * 4 * Copyright 2008-12 Wolfson Microelectronics PLC. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 * 11 * Notes: 12 * The WM8580 is a multichannel codec with S/PDIF support, featuring six 13 * DAC channels and two ADC channels. 14 * 15 * Currently only the primary audio interface is supported - S/PDIF and 16 * the secondary audio interfaces are not. 17 */ 18 19 #include <linux/module.h> 20 #include <linux/moduleparam.h> 21 #include <linux/kernel.h> 22 #include <linux/init.h> 23 #include <linux/delay.h> 24 #include <linux/pm.h> 25 #include <linux/i2c.h> 26 #include <linux/regmap.h> 27 #include <linux/regulator/consumer.h> 28 #include <linux/slab.h> 29 #include <linux/of_device.h> 30 31 #include <sound/core.h> 32 #include <sound/pcm.h> 33 #include <sound/pcm_params.h> 34 #include <sound/soc.h> 35 #include <sound/tlv.h> 36 #include <sound/initval.h> 37 #include <asm/div64.h> 38 39 #include "wm8580.h" 40 41 /* WM8580 register space */ 42 #define WM8580_PLLA1 0x00 43 #define WM8580_PLLA2 0x01 44 #define WM8580_PLLA3 0x02 45 #define WM8580_PLLA4 0x03 46 #define WM8580_PLLB1 0x04 47 #define WM8580_PLLB2 0x05 48 #define WM8580_PLLB3 0x06 49 #define WM8580_PLLB4 0x07 50 #define WM8580_CLKSEL 0x08 51 #define WM8580_PAIF1 0x09 52 #define WM8580_PAIF2 0x0A 53 #define WM8580_SAIF1 0x0B 54 #define WM8580_PAIF3 0x0C 55 #define WM8580_PAIF4 0x0D 56 #define WM8580_SAIF2 0x0E 57 #define WM8580_DAC_CONTROL1 0x0F 58 #define WM8580_DAC_CONTROL2 0x10 59 #define WM8580_DAC_CONTROL3 0x11 60 #define WM8580_DAC_CONTROL4 0x12 61 #define WM8580_DAC_CONTROL5 0x13 62 #define WM8580_DIGITAL_ATTENUATION_DACL1 0x14 63 #define WM8580_DIGITAL_ATTENUATION_DACR1 0x15 64 #define WM8580_DIGITAL_ATTENUATION_DACL2 0x16 65 #define WM8580_DIGITAL_ATTENUATION_DACR2 0x17 66 #define WM8580_DIGITAL_ATTENUATION_DACL3 0x18 67 #define WM8580_DIGITAL_ATTENUATION_DACR3 0x19 68 #define WM8580_MASTER_DIGITAL_ATTENUATION 0x1C 69 #define WM8580_ADC_CONTROL1 0x1D 70 #define WM8580_SPDTXCHAN0 0x1E 71 #define WM8580_SPDTXCHAN1 0x1F 72 #define WM8580_SPDTXCHAN2 0x20 73 #define WM8580_SPDTXCHAN3 0x21 74 #define WM8580_SPDTXCHAN4 0x22 75 #define WM8580_SPDTXCHAN5 0x23 76 #define WM8580_SPDMODE 0x24 77 #define WM8580_INTMASK 0x25 78 #define WM8580_GPO1 0x26 79 #define WM8580_GPO2 0x27 80 #define WM8580_GPO3 0x28 81 #define WM8580_GPO4 0x29 82 #define WM8580_GPO5 0x2A 83 #define WM8580_INTSTAT 0x2B 84 #define WM8580_SPDRXCHAN1 0x2C 85 #define WM8580_SPDRXCHAN2 0x2D 86 #define WM8580_SPDRXCHAN3 0x2E 87 #define WM8580_SPDRXCHAN4 0x2F 88 #define WM8580_SPDRXCHAN5 0x30 89 #define WM8580_SPDSTAT 0x31 90 #define WM8580_PWRDN1 0x32 91 #define WM8580_PWRDN2 0x33 92 #define WM8580_READBACK 0x34 93 #define WM8580_RESET 0x35 94 95 #define WM8580_MAX_REGISTER 0x35 96 97 #define WM8580_DACOSR 0x40 98 99 /* PLLB4 (register 7h) */ 100 #define WM8580_PLLB4_MCLKOUTSRC_MASK 0x60 101 #define WM8580_PLLB4_MCLKOUTSRC_PLLA 0x20 102 #define WM8580_PLLB4_MCLKOUTSRC_PLLB 0x40 103 #define WM8580_PLLB4_MCLKOUTSRC_OSC 0x60 104 105 #define WM8580_PLLB4_CLKOUTSRC_MASK 0x180 106 #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080 107 #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100 108 #define WM8580_PLLB4_CLKOUTSRC_OSCCLK 0x180 109 110 /* CLKSEL (register 8h) */ 111 #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03 112 #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01 113 #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02 114 115 /* AIF control 1 (registers 9h-bh) */ 116 #define WM8580_AIF_RATE_MASK 0x7 117 #define WM8580_AIF_BCLKSEL_MASK 0x18 118 119 #define WM8580_AIF_MS 0x20 120 121 #define WM8580_AIF_CLKSRC_MASK 0xc0 122 #define WM8580_AIF_CLKSRC_PLLA 0x40 123 #define WM8580_AIF_CLKSRC_PLLB 0x40 124 #define WM8580_AIF_CLKSRC_MCLK 0xc0 125 126 /* AIF control 2 (registers ch-eh) */ 127 #define WM8580_AIF_FMT_MASK 0x03 128 #define WM8580_AIF_FMT_RIGHTJ 0x00 129 #define WM8580_AIF_FMT_LEFTJ 0x01 130 #define WM8580_AIF_FMT_I2S 0x02 131 #define WM8580_AIF_FMT_DSP 0x03 132 133 #define WM8580_AIF_LENGTH_MASK 0x0c 134 #define WM8580_AIF_LENGTH_16 0x00 135 #define WM8580_AIF_LENGTH_20 0x04 136 #define WM8580_AIF_LENGTH_24 0x08 137 #define WM8580_AIF_LENGTH_32 0x0c 138 139 #define WM8580_AIF_LRP 0x10 140 #define WM8580_AIF_BCP 0x20 141 142 /* Powerdown Register 1 (register 32h) */ 143 #define WM8580_PWRDN1_PWDN 0x001 144 #define WM8580_PWRDN1_ALLDACPD 0x040 145 146 /* Powerdown Register 2 (register 33h) */ 147 #define WM8580_PWRDN2_OSSCPD 0x001 148 #define WM8580_PWRDN2_PLLAPD 0x002 149 #define WM8580_PWRDN2_PLLBPD 0x004 150 #define WM8580_PWRDN2_SPDIFPD 0x008 151 #define WM8580_PWRDN2_SPDIFTXD 0x010 152 #define WM8580_PWRDN2_SPDIFRXD 0x020 153 154 #define WM8580_DAC_CONTROL5_MUTEALL 0x10 155 156 /* 157 * wm8580 register cache 158 * We can't read the WM8580 register space when we 159 * are using 2 wire for device control, so we cache them instead. 160 */ 161 static const struct reg_default wm8580_reg_defaults[] = { 162 { 0, 0x0121 }, 163 { 1, 0x017e }, 164 { 2, 0x007d }, 165 { 3, 0x0014 }, 166 { 4, 0x0121 }, 167 { 5, 0x017e }, 168 { 6, 0x007d }, 169 { 7, 0x0194 }, 170 { 8, 0x0010 }, 171 { 9, 0x0002 }, 172 { 10, 0x0002 }, 173 { 11, 0x00c2 }, 174 { 12, 0x0182 }, 175 { 13, 0x0082 }, 176 { 14, 0x000a }, 177 { 15, 0x0024 }, 178 { 16, 0x0009 }, 179 { 17, 0x0000 }, 180 { 18, 0x00ff }, 181 { 19, 0x0000 }, 182 { 20, 0x00ff }, 183 { 21, 0x00ff }, 184 { 22, 0x00ff }, 185 { 23, 0x00ff }, 186 { 24, 0x00ff }, 187 { 25, 0x00ff }, 188 { 26, 0x00ff }, 189 { 27, 0x00ff }, 190 { 28, 0x01f0 }, 191 { 29, 0x0040 }, 192 { 30, 0x0000 }, 193 { 31, 0x0000 }, 194 { 32, 0x0000 }, 195 { 33, 0x0000 }, 196 { 34, 0x0031 }, 197 { 35, 0x000b }, 198 { 36, 0x0039 }, 199 { 37, 0x0000 }, 200 { 38, 0x0010 }, 201 { 39, 0x0032 }, 202 { 40, 0x0054 }, 203 { 41, 0x0076 }, 204 { 42, 0x0098 }, 205 { 43, 0x0000 }, 206 { 44, 0x0000 }, 207 { 45, 0x0000 }, 208 { 46, 0x0000 }, 209 { 47, 0x0000 }, 210 { 48, 0x0000 }, 211 { 49, 0x0000 }, 212 { 50, 0x005e }, 213 { 51, 0x003e }, 214 { 52, 0x0000 }, 215 }; 216 217 static bool wm8580_volatile(struct device *dev, unsigned int reg) 218 { 219 switch (reg) { 220 case WM8580_RESET: 221 return true; 222 default: 223 return false; 224 } 225 } 226 227 struct pll_state { 228 unsigned int in; 229 unsigned int out; 230 }; 231 232 #define WM8580_NUM_SUPPLIES 3 233 static const char *wm8580_supply_names[WM8580_NUM_SUPPLIES] = { 234 "AVDD", 235 "DVDD", 236 "PVDD", 237 }; 238 239 /* codec private data */ 240 struct wm8580_priv { 241 struct regmap *regmap; 242 struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES]; 243 struct pll_state a; 244 struct pll_state b; 245 int sysclk[2]; 246 }; 247 248 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); 249 250 static int wm8580_out_vu(struct snd_kcontrol *kcontrol, 251 struct snd_ctl_elem_value *ucontrol) 252 { 253 struct soc_mixer_control *mc = 254 (struct soc_mixer_control *)kcontrol->private_value; 255 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 256 struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec); 257 unsigned int reg = mc->reg; 258 unsigned int reg2 = mc->rreg; 259 int ret; 260 261 /* Clear the register cache VU so we write without VU set */ 262 regcache_cache_only(wm8580->regmap, true); 263 regmap_update_bits(wm8580->regmap, reg, 0x100, 0x000); 264 regmap_update_bits(wm8580->regmap, reg2, 0x100, 0x000); 265 regcache_cache_only(wm8580->regmap, false); 266 267 ret = snd_soc_put_volsw(kcontrol, ucontrol); 268 if (ret < 0) 269 return ret; 270 271 /* Now write again with the volume update bit set */ 272 snd_soc_update_bits(codec, reg, 0x100, 0x100); 273 snd_soc_update_bits(codec, reg2, 0x100, 0x100); 274 275 return 0; 276 } 277 278 static const struct snd_kcontrol_new wm8580_snd_controls[] = { 279 SOC_DOUBLE_R_EXT_TLV("DAC1 Playback Volume", 280 WM8580_DIGITAL_ATTENUATION_DACL1, 281 WM8580_DIGITAL_ATTENUATION_DACR1, 282 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv), 283 SOC_DOUBLE_R_EXT_TLV("DAC2 Playback Volume", 284 WM8580_DIGITAL_ATTENUATION_DACL2, 285 WM8580_DIGITAL_ATTENUATION_DACR2, 286 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv), 287 SOC_DOUBLE_R_EXT_TLV("DAC3 Playback Volume", 288 WM8580_DIGITAL_ATTENUATION_DACL3, 289 WM8580_DIGITAL_ATTENUATION_DACR3, 290 0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv), 291 292 SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0), 293 SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0), 294 SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0), 295 296 SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4, 0, 1, 1, 0), 297 SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4, 2, 3, 1, 0), 298 SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4, 4, 5, 1, 0), 299 300 SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0), 301 SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 1), 302 SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 1), 303 SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 1), 304 305 SOC_DOUBLE("Capture Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 1), 306 SOC_SINGLE("Capture High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0), 307 }; 308 309 static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = { 310 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1), 311 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1), 312 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1), 313 314 SND_SOC_DAPM_OUTPUT("VOUT1L"), 315 SND_SOC_DAPM_OUTPUT("VOUT1R"), 316 SND_SOC_DAPM_OUTPUT("VOUT2L"), 317 SND_SOC_DAPM_OUTPUT("VOUT2R"), 318 SND_SOC_DAPM_OUTPUT("VOUT3L"), 319 SND_SOC_DAPM_OUTPUT("VOUT3R"), 320 321 SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1), 322 323 SND_SOC_DAPM_INPUT("AINL"), 324 SND_SOC_DAPM_INPUT("AINR"), 325 }; 326 327 static const struct snd_soc_dapm_route wm8580_dapm_routes[] = { 328 { "VOUT1L", NULL, "DAC1" }, 329 { "VOUT1R", NULL, "DAC1" }, 330 331 { "VOUT2L", NULL, "DAC2" }, 332 { "VOUT2R", NULL, "DAC2" }, 333 334 { "VOUT3L", NULL, "DAC3" }, 335 { "VOUT3R", NULL, "DAC3" }, 336 337 { "ADC", NULL, "AINL" }, 338 { "ADC", NULL, "AINR" }, 339 }; 340 341 /* PLL divisors */ 342 struct _pll_div { 343 u32 prescale:1; 344 u32 postscale:1; 345 u32 freqmode:2; 346 u32 n:4; 347 u32 k:24; 348 }; 349 350 /* The size in bits of the pll divide */ 351 #define FIXED_PLL_SIZE (1 << 22) 352 353 /* PLL rate to output rate divisions */ 354 static struct { 355 unsigned int div; 356 unsigned int freqmode; 357 unsigned int postscale; 358 } post_table[] = { 359 { 2, 0, 0 }, 360 { 4, 0, 1 }, 361 { 4, 1, 0 }, 362 { 8, 1, 1 }, 363 { 8, 2, 0 }, 364 { 16, 2, 1 }, 365 { 12, 3, 0 }, 366 { 24, 3, 1 } 367 }; 368 369 static int pll_factors(struct _pll_div *pll_div, unsigned int target, 370 unsigned int source) 371 { 372 u64 Kpart; 373 unsigned int K, Ndiv, Nmod; 374 int i; 375 376 pr_debug("wm8580: PLL %uHz->%uHz\n", source, target); 377 378 /* Scale the output frequency up; the PLL should run in the 379 * region of 90-100MHz. 380 */ 381 for (i = 0; i < ARRAY_SIZE(post_table); i++) { 382 if (target * post_table[i].div >= 90000000 && 383 target * post_table[i].div <= 100000000) { 384 pll_div->freqmode = post_table[i].freqmode; 385 pll_div->postscale = post_table[i].postscale; 386 target *= post_table[i].div; 387 break; 388 } 389 } 390 391 if (i == ARRAY_SIZE(post_table)) { 392 printk(KERN_ERR "wm8580: Unable to scale output frequency " 393 "%u\n", target); 394 return -EINVAL; 395 } 396 397 Ndiv = target / source; 398 399 if (Ndiv < 5) { 400 source /= 2; 401 pll_div->prescale = 1; 402 Ndiv = target / source; 403 } else 404 pll_div->prescale = 0; 405 406 if ((Ndiv < 5) || (Ndiv > 13)) { 407 printk(KERN_ERR 408 "WM8580 N=%u outside supported range\n", Ndiv); 409 return -EINVAL; 410 } 411 412 pll_div->n = Ndiv; 413 Nmod = target % source; 414 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 415 416 do_div(Kpart, source); 417 418 K = Kpart & 0xFFFFFFFF; 419 420 pll_div->k = K; 421 422 pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n", 423 pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode, 424 pll_div->postscale); 425 426 return 0; 427 } 428 429 static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 430 int source, unsigned int freq_in, unsigned int freq_out) 431 { 432 int offset; 433 struct snd_soc_codec *codec = codec_dai->codec; 434 struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec); 435 struct pll_state *state; 436 struct _pll_div pll_div; 437 unsigned int reg; 438 unsigned int pwr_mask; 439 int ret; 440 441 /* GCC isn't able to work out the ifs below for initialising/using 442 * pll_div so suppress warnings. 443 */ 444 memset(&pll_div, 0, sizeof(pll_div)); 445 446 switch (pll_id) { 447 case WM8580_PLLA: 448 state = &wm8580->a; 449 offset = 0; 450 pwr_mask = WM8580_PWRDN2_PLLAPD; 451 break; 452 case WM8580_PLLB: 453 state = &wm8580->b; 454 offset = 4; 455 pwr_mask = WM8580_PWRDN2_PLLBPD; 456 break; 457 default: 458 return -ENODEV; 459 } 460 461 if (freq_in && freq_out) { 462 ret = pll_factors(&pll_div, freq_out, freq_in); 463 if (ret != 0) 464 return ret; 465 } 466 467 state->in = freq_in; 468 state->out = freq_out; 469 470 /* Always disable the PLL - it is not safe to leave it running 471 * while reprogramming it. 472 */ 473 snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, pwr_mask); 474 475 if (!freq_in || !freq_out) 476 return 0; 477 478 snd_soc_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff); 479 snd_soc_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0x1ff); 480 snd_soc_write(codec, WM8580_PLLA3 + offset, 481 (pll_div.k >> 18 & 0xf) | (pll_div.n << 4)); 482 483 reg = snd_soc_read(codec, WM8580_PLLA4 + offset); 484 reg &= ~0x1b; 485 reg |= pll_div.prescale | pll_div.postscale << 1 | 486 pll_div.freqmode << 3; 487 488 snd_soc_write(codec, WM8580_PLLA4 + offset, reg); 489 490 /* All done, turn it on */ 491 snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, 0); 492 493 return 0; 494 } 495 496 static const int wm8580_sysclk_ratios[] = { 497 128, 192, 256, 384, 512, 768, 1152, 498 }; 499 500 /* 501 * Set PCM DAI bit size and sample rate. 502 */ 503 static int wm8580_paif_hw_params(struct snd_pcm_substream *substream, 504 struct snd_pcm_hw_params *params, 505 struct snd_soc_dai *dai) 506 { 507 struct snd_soc_pcm_runtime *rtd = substream->private_data; 508 struct snd_soc_codec *codec = rtd->codec; 509 struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec); 510 u16 paifa = 0; 511 u16 paifb = 0; 512 int i, ratio, osr; 513 514 /* bit size */ 515 switch (params_format(params)) { 516 case SNDRV_PCM_FORMAT_S16_LE: 517 paifa |= 0x8; 518 break; 519 case SNDRV_PCM_FORMAT_S20_3LE: 520 paifa |= 0x0; 521 paifb |= WM8580_AIF_LENGTH_20; 522 break; 523 case SNDRV_PCM_FORMAT_S24_LE: 524 paifa |= 0x0; 525 paifb |= WM8580_AIF_LENGTH_24; 526 break; 527 case SNDRV_PCM_FORMAT_S32_LE: 528 paifa |= 0x0; 529 paifb |= WM8580_AIF_LENGTH_32; 530 break; 531 default: 532 return -EINVAL; 533 } 534 535 /* Look up the SYSCLK ratio; accept only exact matches */ 536 ratio = wm8580->sysclk[dai->driver->id] / params_rate(params); 537 for (i = 0; i < ARRAY_SIZE(wm8580_sysclk_ratios); i++) 538 if (ratio == wm8580_sysclk_ratios[i]) 539 break; 540 if (i == ARRAY_SIZE(wm8580_sysclk_ratios)) { 541 dev_err(codec->dev, "Invalid clock ratio %d/%d\n", 542 wm8580->sysclk[dai->driver->id], params_rate(params)); 543 return -EINVAL; 544 } 545 paifa |= i; 546 dev_dbg(codec->dev, "Running at %dfs with %dHz clock\n", 547 wm8580_sysclk_ratios[i], wm8580->sysclk[dai->driver->id]); 548 549 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 550 switch (ratio) { 551 case 128: 552 case 192: 553 osr = WM8580_DACOSR; 554 dev_dbg(codec->dev, "Selecting 64x OSR\n"); 555 break; 556 default: 557 osr = 0; 558 dev_dbg(codec->dev, "Selecting 128x OSR\n"); 559 break; 560 } 561 562 snd_soc_update_bits(codec, WM8580_PAIF3, WM8580_DACOSR, osr); 563 } 564 565 snd_soc_update_bits(codec, WM8580_PAIF1 + dai->driver->id, 566 WM8580_AIF_RATE_MASK | WM8580_AIF_BCLKSEL_MASK, 567 paifa); 568 snd_soc_update_bits(codec, WM8580_PAIF3 + dai->driver->id, 569 WM8580_AIF_LENGTH_MASK, paifb); 570 return 0; 571 } 572 573 static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai, 574 unsigned int fmt) 575 { 576 struct snd_soc_codec *codec = codec_dai->codec; 577 unsigned int aifa; 578 unsigned int aifb; 579 int can_invert_lrclk; 580 581 aifa = snd_soc_read(codec, WM8580_PAIF1 + codec_dai->driver->id); 582 aifb = snd_soc_read(codec, WM8580_PAIF3 + codec_dai->driver->id); 583 584 aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP); 585 586 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 587 case SND_SOC_DAIFMT_CBS_CFS: 588 aifa &= ~WM8580_AIF_MS; 589 break; 590 case SND_SOC_DAIFMT_CBM_CFM: 591 aifa |= WM8580_AIF_MS; 592 break; 593 default: 594 return -EINVAL; 595 } 596 597 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 598 case SND_SOC_DAIFMT_I2S: 599 can_invert_lrclk = 1; 600 aifb |= WM8580_AIF_FMT_I2S; 601 break; 602 case SND_SOC_DAIFMT_RIGHT_J: 603 can_invert_lrclk = 1; 604 aifb |= WM8580_AIF_FMT_RIGHTJ; 605 break; 606 case SND_SOC_DAIFMT_LEFT_J: 607 can_invert_lrclk = 1; 608 aifb |= WM8580_AIF_FMT_LEFTJ; 609 break; 610 case SND_SOC_DAIFMT_DSP_A: 611 can_invert_lrclk = 0; 612 aifb |= WM8580_AIF_FMT_DSP; 613 break; 614 case SND_SOC_DAIFMT_DSP_B: 615 can_invert_lrclk = 0; 616 aifb |= WM8580_AIF_FMT_DSP; 617 aifb |= WM8580_AIF_LRP; 618 break; 619 default: 620 return -EINVAL; 621 } 622 623 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 624 case SND_SOC_DAIFMT_NB_NF: 625 break; 626 627 case SND_SOC_DAIFMT_IB_IF: 628 if (!can_invert_lrclk) 629 return -EINVAL; 630 aifb |= WM8580_AIF_BCP; 631 aifb |= WM8580_AIF_LRP; 632 break; 633 634 case SND_SOC_DAIFMT_IB_NF: 635 aifb |= WM8580_AIF_BCP; 636 break; 637 638 case SND_SOC_DAIFMT_NB_IF: 639 if (!can_invert_lrclk) 640 return -EINVAL; 641 aifb |= WM8580_AIF_LRP; 642 break; 643 644 default: 645 return -EINVAL; 646 } 647 648 snd_soc_write(codec, WM8580_PAIF1 + codec_dai->driver->id, aifa); 649 snd_soc_write(codec, WM8580_PAIF3 + codec_dai->driver->id, aifb); 650 651 return 0; 652 } 653 654 static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 655 int div_id, int div) 656 { 657 struct snd_soc_codec *codec = codec_dai->codec; 658 unsigned int reg; 659 660 switch (div_id) { 661 case WM8580_MCLK: 662 reg = snd_soc_read(codec, WM8580_PLLB4); 663 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK; 664 665 switch (div) { 666 case WM8580_CLKSRC_MCLK: 667 /* Input */ 668 break; 669 670 case WM8580_CLKSRC_PLLA: 671 reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA; 672 break; 673 case WM8580_CLKSRC_PLLB: 674 reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB; 675 break; 676 677 case WM8580_CLKSRC_OSC: 678 reg |= WM8580_PLLB4_MCLKOUTSRC_OSC; 679 break; 680 681 default: 682 return -EINVAL; 683 } 684 snd_soc_write(codec, WM8580_PLLB4, reg); 685 break; 686 687 case WM8580_CLKOUTSRC: 688 reg = snd_soc_read(codec, WM8580_PLLB4); 689 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK; 690 691 switch (div) { 692 case WM8580_CLKSRC_NONE: 693 break; 694 695 case WM8580_CLKSRC_PLLA: 696 reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK; 697 break; 698 699 case WM8580_CLKSRC_PLLB: 700 reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK; 701 break; 702 703 case WM8580_CLKSRC_OSC: 704 reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK; 705 break; 706 707 default: 708 return -EINVAL; 709 } 710 snd_soc_write(codec, WM8580_PLLB4, reg); 711 break; 712 713 default: 714 return -EINVAL; 715 } 716 717 return 0; 718 } 719 720 static int wm8580_set_sysclk(struct snd_soc_dai *dai, int clk_id, 721 unsigned int freq, int dir) 722 { 723 struct snd_soc_codec *codec = dai->codec; 724 struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec); 725 int ret, sel, sel_mask, sel_shift; 726 727 switch (dai->driver->id) { 728 case WM8580_DAI_PAIFRX: 729 sel_mask = 0x3; 730 sel_shift = 0; 731 break; 732 733 case WM8580_DAI_PAIFTX: 734 sel_mask = 0xc; 735 sel_shift = 2; 736 break; 737 738 default: 739 BUG_ON("Unknown DAI driver ID\n"); 740 return -EINVAL; 741 } 742 743 switch (clk_id) { 744 case WM8580_CLKSRC_ADCMCLK: 745 if (dai->driver->id != WM8580_DAI_PAIFTX) 746 return -EINVAL; 747 sel = 0 << sel_shift; 748 break; 749 case WM8580_CLKSRC_PLLA: 750 sel = 1 << sel_shift; 751 break; 752 case WM8580_CLKSRC_PLLB: 753 sel = 2 << sel_shift; 754 break; 755 case WM8580_CLKSRC_MCLK: 756 sel = 3 << sel_shift; 757 break; 758 default: 759 dev_err(codec->dev, "Unknown clock %d\n", clk_id); 760 return -EINVAL; 761 } 762 763 /* We really should validate PLL settings but not yet */ 764 wm8580->sysclk[dai->driver->id] = freq; 765 766 ret = snd_soc_update_bits(codec, WM8580_CLKSEL, sel_mask, sel); 767 if (ret < 0) 768 return ret; 769 770 return 0; 771 } 772 773 static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute) 774 { 775 struct snd_soc_codec *codec = codec_dai->codec; 776 unsigned int reg; 777 778 reg = snd_soc_read(codec, WM8580_DAC_CONTROL5); 779 780 if (mute) 781 reg |= WM8580_DAC_CONTROL5_MUTEALL; 782 else 783 reg &= ~WM8580_DAC_CONTROL5_MUTEALL; 784 785 snd_soc_write(codec, WM8580_DAC_CONTROL5, reg); 786 787 return 0; 788 } 789 790 static int wm8580_set_bias_level(struct snd_soc_codec *codec, 791 enum snd_soc_bias_level level) 792 { 793 switch (level) { 794 case SND_SOC_BIAS_ON: 795 case SND_SOC_BIAS_PREPARE: 796 break; 797 798 case SND_SOC_BIAS_STANDBY: 799 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 800 /* Power up and get individual control of the DACs */ 801 snd_soc_update_bits(codec, WM8580_PWRDN1, 802 WM8580_PWRDN1_PWDN | 803 WM8580_PWRDN1_ALLDACPD, 0); 804 805 /* Make VMID high impedance */ 806 snd_soc_update_bits(codec, WM8580_ADC_CONTROL1, 807 0x100, 0); 808 } 809 break; 810 811 case SND_SOC_BIAS_OFF: 812 snd_soc_update_bits(codec, WM8580_PWRDN1, 813 WM8580_PWRDN1_PWDN, WM8580_PWRDN1_PWDN); 814 break; 815 } 816 codec->dapm.bias_level = level; 817 return 0; 818 } 819 820 #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 821 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 822 823 static const struct snd_soc_dai_ops wm8580_dai_ops_playback = { 824 .set_sysclk = wm8580_set_sysclk, 825 .hw_params = wm8580_paif_hw_params, 826 .set_fmt = wm8580_set_paif_dai_fmt, 827 .set_clkdiv = wm8580_set_dai_clkdiv, 828 .set_pll = wm8580_set_dai_pll, 829 .digital_mute = wm8580_digital_mute, 830 }; 831 832 static const struct snd_soc_dai_ops wm8580_dai_ops_capture = { 833 .set_sysclk = wm8580_set_sysclk, 834 .hw_params = wm8580_paif_hw_params, 835 .set_fmt = wm8580_set_paif_dai_fmt, 836 .set_clkdiv = wm8580_set_dai_clkdiv, 837 .set_pll = wm8580_set_dai_pll, 838 }; 839 840 static struct snd_soc_dai_driver wm8580_dai[] = { 841 { 842 .name = "wm8580-hifi-playback", 843 .id = WM8580_DAI_PAIFRX, 844 .playback = { 845 .stream_name = "Playback", 846 .channels_min = 1, 847 .channels_max = 6, 848 .rates = SNDRV_PCM_RATE_8000_192000, 849 .formats = WM8580_FORMATS, 850 }, 851 .ops = &wm8580_dai_ops_playback, 852 }, 853 { 854 .name = "wm8580-hifi-capture", 855 .id = WM8580_DAI_PAIFTX, 856 .capture = { 857 .stream_name = "Capture", 858 .channels_min = 2, 859 .channels_max = 2, 860 .rates = SNDRV_PCM_RATE_8000_192000, 861 .formats = WM8580_FORMATS, 862 }, 863 .ops = &wm8580_dai_ops_capture, 864 }, 865 }; 866 867 static int wm8580_probe(struct snd_soc_codec *codec) 868 { 869 struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec); 870 int ret = 0; 871 872 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP); 873 if (ret < 0) { 874 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 875 return ret; 876 } 877 878 ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies), 879 wm8580->supplies); 880 if (ret != 0) { 881 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); 882 goto err_regulator_get; 883 } 884 885 /* Get the codec into a known state */ 886 ret = snd_soc_write(codec, WM8580_RESET, 0); 887 if (ret != 0) { 888 dev_err(codec->dev, "Failed to reset codec: %d\n", ret); 889 goto err_regulator_enable; 890 } 891 892 wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 893 894 return 0; 895 896 err_regulator_enable: 897 regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies); 898 err_regulator_get: 899 return ret; 900 } 901 902 /* power down chip */ 903 static int wm8580_remove(struct snd_soc_codec *codec) 904 { 905 struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec); 906 907 wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF); 908 909 regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies); 910 911 return 0; 912 } 913 914 static struct snd_soc_codec_driver soc_codec_dev_wm8580 = { 915 .probe = wm8580_probe, 916 .remove = wm8580_remove, 917 .set_bias_level = wm8580_set_bias_level, 918 919 .controls = wm8580_snd_controls, 920 .num_controls = ARRAY_SIZE(wm8580_snd_controls), 921 .dapm_widgets = wm8580_dapm_widgets, 922 .num_dapm_widgets = ARRAY_SIZE(wm8580_dapm_widgets), 923 .dapm_routes = wm8580_dapm_routes, 924 .num_dapm_routes = ARRAY_SIZE(wm8580_dapm_routes), 925 }; 926 927 static const struct of_device_id wm8580_of_match[] = { 928 { .compatible = "wlf,wm8580" }, 929 { }, 930 }; 931 932 static const struct regmap_config wm8580_regmap = { 933 .reg_bits = 7, 934 .val_bits = 9, 935 .max_register = WM8580_MAX_REGISTER, 936 937 .reg_defaults = wm8580_reg_defaults, 938 .num_reg_defaults = ARRAY_SIZE(wm8580_reg_defaults), 939 .cache_type = REGCACHE_RBTREE, 940 941 .volatile_reg = wm8580_volatile, 942 }; 943 944 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 945 static int wm8580_i2c_probe(struct i2c_client *i2c, 946 const struct i2c_device_id *id) 947 { 948 struct wm8580_priv *wm8580; 949 int ret, i; 950 951 wm8580 = devm_kzalloc(&i2c->dev, sizeof(struct wm8580_priv), 952 GFP_KERNEL); 953 if (wm8580 == NULL) 954 return -ENOMEM; 955 956 wm8580->regmap = devm_regmap_init_i2c(i2c, &wm8580_regmap); 957 if (IS_ERR(wm8580->regmap)) 958 return PTR_ERR(wm8580->regmap); 959 960 for (i = 0; i < ARRAY_SIZE(wm8580->supplies); i++) 961 wm8580->supplies[i].supply = wm8580_supply_names[i]; 962 963 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8580->supplies), 964 wm8580->supplies); 965 if (ret != 0) { 966 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret); 967 return ret; 968 } 969 970 i2c_set_clientdata(i2c, wm8580); 971 972 ret = snd_soc_register_codec(&i2c->dev, 973 &soc_codec_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai)); 974 975 return ret; 976 } 977 978 static int wm8580_i2c_remove(struct i2c_client *client) 979 { 980 snd_soc_unregister_codec(&client->dev); 981 return 0; 982 } 983 984 static const struct i2c_device_id wm8580_i2c_id[] = { 985 { "wm8580", 0 }, 986 { } 987 }; 988 MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id); 989 990 static struct i2c_driver wm8580_i2c_driver = { 991 .driver = { 992 .name = "wm8580", 993 .owner = THIS_MODULE, 994 .of_match_table = wm8580_of_match, 995 }, 996 .probe = wm8580_i2c_probe, 997 .remove = wm8580_i2c_remove, 998 .id_table = wm8580_i2c_id, 999 }; 1000 #endif 1001 1002 static int __init wm8580_modinit(void) 1003 { 1004 int ret = 0; 1005 1006 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 1007 ret = i2c_add_driver(&wm8580_i2c_driver); 1008 if (ret != 0) { 1009 pr_err("Failed to register WM8580 I2C driver: %d\n", ret); 1010 } 1011 #endif 1012 1013 return ret; 1014 } 1015 module_init(wm8580_modinit); 1016 1017 static void __exit wm8580_exit(void) 1018 { 1019 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 1020 i2c_del_driver(&wm8580_i2c_driver); 1021 #endif 1022 } 1023 module_exit(wm8580_exit); 1024 1025 MODULE_DESCRIPTION("ASoC WM8580 driver"); 1026 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 1027 MODULE_LICENSE("GPL"); 1028