sound/soc/codecs/wm8580.c

   1 /*
   2  * wm8580.c  --  WM8580 ALSA Soc Audio driver
   3  *
   4  * Copyright 2008, 2009 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/regulator/consumer.h>
  27 #include <linux/slab.h>
  28 #include <linux/of_device.h>
  29
  30 #include <sound/core.h>
  31 #include <sound/pcm.h>
  32 #include <sound/pcm_params.h>
  33 #include <sound/soc.h>
  34 #include <sound/tlv.h>
  35 #include <sound/initval.h>
  36 #include <asm/div64.h>
  37
  38 #include "wm8580.h"
  39
  40 /* WM8580 register space */
  41 #define WM8580_PLLA1                         0x00
  42 #define WM8580_PLLA2                         0x01
  43 #define WM8580_PLLA3                         0x02
  44 #define WM8580_PLLA4                         0x03
  45 #define WM8580_PLLB1                         0x04
  46 #define WM8580_PLLB2                         0x05
  47 #define WM8580_PLLB3                         0x06
  48 #define WM8580_PLLB4                         0x07
  49 #define WM8580_CLKSEL                        0x08
  50 #define WM8580_PAIF1                         0x09
  51 #define WM8580_PAIF2                         0x0A
  52 #define WM8580_SAIF1                         0x0B
  53 #define WM8580_PAIF3                         0x0C
  54 #define WM8580_PAIF4                         0x0D
  55 #define WM8580_SAIF2                         0x0E
  56 #define WM8580_DAC_CONTROL1                  0x0F
  57 #define WM8580_DAC_CONTROL2                  0x10
  58 #define WM8580_DAC_CONTROL3                  0x11
  59 #define WM8580_DAC_CONTROL4                  0x12
  60 #define WM8580_DAC_CONTROL5                  0x13
  61 #define WM8580_DIGITAL_ATTENUATION_DACL1     0x14
  62 #define WM8580_DIGITAL_ATTENUATION_DACR1     0x15
  63 #define WM8580_DIGITAL_ATTENUATION_DACL2     0x16
  64 #define WM8580_DIGITAL_ATTENUATION_DACR2     0x17
  65 #define WM8580_DIGITAL_ATTENUATION_DACL3     0x18
  66 #define WM8580_DIGITAL_ATTENUATION_DACR3     0x19
  67 #define WM8580_MASTER_DIGITAL_ATTENUATION    0x1C
  68 #define WM8580_ADC_CONTROL1                  0x1D
  69 #define WM8580_SPDTXCHAN0                    0x1E
  70 #define WM8580_SPDTXCHAN1                    0x1F
  71 #define WM8580_SPDTXCHAN2                    0x20
  72 #define WM8580_SPDTXCHAN3                    0x21
  73 #define WM8580_SPDTXCHAN4                    0x22
  74 #define WM8580_SPDTXCHAN5                    0x23
  75 #define WM8580_SPDMODE                       0x24
  76 #define WM8580_INTMASK                       0x25
  77 #define WM8580_GPO1                          0x26
  78 #define WM8580_GPO2                          0x27
  79 #define WM8580_GPO3                          0x28
  80 #define WM8580_GPO4                          0x29
  81 #define WM8580_GPO5                          0x2A
  82 #define WM8580_INTSTAT                       0x2B
  83 #define WM8580_SPDRXCHAN1                    0x2C
  84 #define WM8580_SPDRXCHAN2                    0x2D
  85 #define WM8580_SPDRXCHAN3                    0x2E
  86 #define WM8580_SPDRXCHAN4                    0x2F
  87 #define WM8580_SPDRXCHAN5                    0x30
  88 #define WM8580_SPDSTAT                       0x31
  89 #define WM8580_PWRDN1                        0x32
  90 #define WM8580_PWRDN2                        0x33
  91 #define WM8580_READBACK                      0x34
  92 #define WM8580_RESET                         0x35
  93
  94 #define WM8580_MAX_REGISTER                  0x35
  95
  96 #define WM8580_DACOSR 0x40
  97
  98 /* PLLB4 (register 7h) */
  99 #define WM8580_PLLB4_MCLKOUTSRC_MASK   0x60
 100 #define WM8580_PLLB4_MCLKOUTSRC_PLLA   0x20
 101 #define WM8580_PLLB4_MCLKOUTSRC_PLLB   0x40
 102 #define WM8580_PLLB4_MCLKOUTSRC_OSC    0x60
 103
 104 #define WM8580_PLLB4_CLKOUTSRC_MASK    0x180
 105 #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
 106 #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
 107 #define WM8580_PLLB4_CLKOUTSRC_OSCCLK  0x180
 108
 109 /* CLKSEL (register 8h) */
 110 #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
 111 #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
 112 #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
 113
 114 /* AIF control 1 (registers 9h-bh) */
 115 #define WM8580_AIF_RATE_MASK       0x7
 116 #define WM8580_AIF_BCLKSEL_MASK   0x18
 117
 118 #define WM8580_AIF_MS             0x20
 119
 120 #define WM8580_AIF_CLKSRC_MASK    0xc0
 121 #define WM8580_AIF_CLKSRC_PLLA    0x40
 122 #define WM8580_AIF_CLKSRC_PLLB    0x40
 123 #define WM8580_AIF_CLKSRC_MCLK    0xc0
 124
 125 /* AIF control 2 (registers ch-eh) */
 126 #define WM8580_AIF_FMT_MASK    0x03
 127 #define WM8580_AIF_FMT_RIGHTJ  0x00
 128 #define WM8580_AIF_FMT_LEFTJ   0x01
 129 #define WM8580_AIF_FMT_I2S     0x02
 130 #define WM8580_AIF_FMT_DSP     0x03
 131
 132 #define WM8580_AIF_LENGTH_MASK   0x0c
 133 #define WM8580_AIF_LENGTH_16     0x00
 134 #define WM8580_AIF_LENGTH_20     0x04
 135 #define WM8580_AIF_LENGTH_24     0x08
 136 #define WM8580_AIF_LENGTH_32     0x0c
 137
 138 #define WM8580_AIF_LRP         0x10
 139 #define WM8580_AIF_BCP         0x20
 140
 141 /* Powerdown Register 1 (register 32h) */
 142 #define WM8580_PWRDN1_PWDN     0x001
 143 #define WM8580_PWRDN1_ALLDACPD 0x040
 144
 145 /* Powerdown Register 2 (register 33h) */
 146 #define WM8580_PWRDN2_OSSCPD   0x001
 147 #define WM8580_PWRDN2_PLLAPD   0x002
 148 #define WM8580_PWRDN2_PLLBPD   0x004
 149 #define WM8580_PWRDN2_SPDIFPD  0x008
 150 #define WM8580_PWRDN2_SPDIFTXD 0x010
 151 #define WM8580_PWRDN2_SPDIFRXD 0x020
 152
 153 #define WM8580_DAC_CONTROL5_MUTEALL 0x10
 154
 155 /*
 156  * wm8580 register cache
 157  * We can't read the WM8580 register space when we
 158  * are using 2 wire for device control, so we cache them instead.
 159  */
 160 static const u16 wm8580_reg[] = {
 161         0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
 162         0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
 163         0x0010, 0x0002, 0x0002, 0x00c2, /*R11*/
 164         0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
 165         0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
 166         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
 167         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
 168         0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
 169         0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
 170         0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
 171         0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
 172         0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
 173         0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
 174         0x0000, 0x0000 /*R53*/
 175 };
 176
 177 struct pll_state {
 178         unsigned int in;
 179         unsigned int out;
 180 };
 181
 182 #define WM8580_NUM_SUPPLIES 3
 183 static const char *wm8580_supply_names[WM8580_NUM_SUPPLIES] = {
 184         "AVDD",
 185         "DVDD",
 186         "PVDD",
 187 };
 188
 189 /* codec private data */
 190 struct wm8580_priv {
 191         enum snd_soc_control_type control_type;
 192         struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES];
 193         struct pll_state a;
 194         struct pll_state b;
 195         int sysclk[2];
 196 };
 197
 198 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
 199
 200 static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
 201                          struct snd_ctl_elem_value *ucontrol)
 202 {
 203         struct soc_mixer_control *mc =
 204                 (struct soc_mixer_control *)kcontrol->private_value;
 205         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 206         u16 *reg_cache = codec->reg_cache;
 207         unsigned int reg = mc->reg;
 208         unsigned int reg2 = mc->rreg;
 209         int ret;
 210
 211         /* Clear the register cache so we write without VU set */
 212         reg_cache[reg] = 0;
 213         reg_cache[reg2] = 0;
 214
 215         ret = snd_soc_put_volsw(kcontrol, ucontrol);
 216         if (ret < 0)
 217                 return ret;
 218
 219         /* Now write again with the volume update bit set */
 220         snd_soc_update_bits(codec, reg, 0x100, 0x100);
 221         snd_soc_update_bits(codec, reg2, 0x100, 0x100);
 222
 223         return 0;
 224 }
 225
 226 static const struct snd_kcontrol_new wm8580_snd_controls[] = {
 227 SOC_DOUBLE_R_EXT_TLV("DAC1 Playback Volume",
 228                      WM8580_DIGITAL_ATTENUATION_DACL1,
 229                      WM8580_DIGITAL_ATTENUATION_DACR1,
 230                      0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
 231 SOC_DOUBLE_R_EXT_TLV("DAC2 Playback Volume",
 232                      WM8580_DIGITAL_ATTENUATION_DACL2,
 233                      WM8580_DIGITAL_ATTENUATION_DACR2,
 234                      0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
 235 SOC_DOUBLE_R_EXT_TLV("DAC3 Playback Volume",
 236                      WM8580_DIGITAL_ATTENUATION_DACL3,
 237                      WM8580_DIGITAL_ATTENUATION_DACR3,
 238                      0, 0xff, 0, snd_soc_get_volsw, wm8580_out_vu, dac_tlv),
 239
 240 SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
 241 SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
 242 SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
 243
 244 SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4,  0, 1, 1, 0),
 245 SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4,  2, 3, 1, 0),
 246 SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4,  4, 5, 1, 0),
 247
 248 SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
 249 SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 1),
 250 SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 1),
 251 SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 1),
 252
 253 SOC_DOUBLE("Capture Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 1),
 254 SOC_SINGLE("Capture High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
 255 };
 256
 257 static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
 258 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
 259 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
 260 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
 261
 262 SND_SOC_DAPM_OUTPUT("VOUT1L"),
 263 SND_SOC_DAPM_OUTPUT("VOUT1R"),
 264 SND_SOC_DAPM_OUTPUT("VOUT2L"),
 265 SND_SOC_DAPM_OUTPUT("VOUT2R"),
 266 SND_SOC_DAPM_OUTPUT("VOUT3L"),
 267 SND_SOC_DAPM_OUTPUT("VOUT3R"),
 268
 269 SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
 270
 271 SND_SOC_DAPM_INPUT("AINL"),
 272 SND_SOC_DAPM_INPUT("AINR"),
 273 };
 274
 275 static const struct snd_soc_dapm_route wm8580_dapm_routes[] = {
 276         { "VOUT1L", NULL, "DAC1" },
 277         { "VOUT1R", NULL, "DAC1" },
 278
 279         { "VOUT2L", NULL, "DAC2" },
 280         { "VOUT2R", NULL, "DAC2" },
 281
 282         { "VOUT3L", NULL, "DAC3" },
 283         { "VOUT3R", NULL, "DAC3" },
 284
 285         { "ADC", NULL, "AINL" },
 286         { "ADC", NULL, "AINR" },
 287 };
 288
 289 /* PLL divisors */
 290 struct _pll_div {
 291         u32 prescale:1;
 292         u32 postscale:1;
 293         u32 freqmode:2;
 294         u32 n:4;
 295         u32 k:24;
 296 };
 297
 298 /* The size in bits of the pll divide */
 299 #define FIXED_PLL_SIZE (1 << 22)
 300
 301 /* PLL rate to output rate divisions */
 302 static struct {
 303         unsigned int div;
 304         unsigned int freqmode;
 305         unsigned int postscale;
 306 } post_table[] = {
 307         {  2,  0, 0 },
 308         {  4,  0, 1 },
 309         {  4,  1, 0 },
 310         {  8,  1, 1 },
 311         {  8,  2, 0 },
 312         { 16,  2, 1 },
 313         { 12,  3, 0 },
 314         { 24,  3, 1 }
 315 };
 316
 317 static int pll_factors(struct _pll_div *pll_div, unsigned int target,
 318                        unsigned int source)
 319 {
 320         u64 Kpart;
 321         unsigned int K, Ndiv, Nmod;
 322         int i;
 323
 324         pr_debug("wm8580: PLL %uHz->%uHz\n", source, target);
 325
 326         /* Scale the output frequency up; the PLL should run in the
 327          * region of 90-100MHz.
 328          */
 329         for (i = 0; i < ARRAY_SIZE(post_table); i++) {
 330                 if (target * post_table[i].div >=  90000000 &&
 331                     target * post_table[i].div <= 100000000) {
 332                         pll_div->freqmode = post_table[i].freqmode;
 333                         pll_div->postscale = post_table[i].postscale;
 334                         target *= post_table[i].div;
 335                         break;
 336                 }
 337         }
 338
 339         if (i == ARRAY_SIZE(post_table)) {
 340                 printk(KERN_ERR "wm8580: Unable to scale output frequency "
 341                        "%u\n", target);
 342                 return -EINVAL;
 343         }
 344
 345         Ndiv = target / source;
 346
 347         if (Ndiv < 5) {
 348                 source /= 2;
 349                 pll_div->prescale = 1;
 350                 Ndiv = target / source;
 351         } else
 352                 pll_div->prescale = 0;
 353
 354         if ((Ndiv < 5) || (Ndiv > 13)) {
 355                 printk(KERN_ERR
 356                         "WM8580 N=%u outside supported range\n", Ndiv);
 357                 return -EINVAL;
 358         }
 359
 360         pll_div->n = Ndiv;
 361         Nmod = target % source;
 362         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 363
 364         do_div(Kpart, source);
 365
 366         K = Kpart & 0xFFFFFFFF;
 367
 368         pll_div->k = K;
 369
 370         pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
 371                  pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
 372                  pll_div->postscale);
 373
 374         return 0;
 375 }
 376
 377 static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 378                 int source, unsigned int freq_in, unsigned int freq_out)
 379 {
 380         int offset;
 381         struct snd_soc_codec *codec = codec_dai->codec;
 382         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 383         struct pll_state *state;
 384         struct _pll_div pll_div;
 385         unsigned int reg;
 386         unsigned int pwr_mask;
 387         int ret;
 388
 389         /* GCC isn't able to work out the ifs below for initialising/using
 390          * pll_div so suppress warnings.
 391          */
 392         memset(&pll_div, 0, sizeof(pll_div));
 393
 394         switch (pll_id) {
 395         case WM8580_PLLA:
 396                 state = &wm8580->a;
 397                 offset = 0;
 398                 pwr_mask = WM8580_PWRDN2_PLLAPD;
 399                 break;
 400         case WM8580_PLLB:
 401                 state = &wm8580->b;
 402                 offset = 4;
 403                 pwr_mask = WM8580_PWRDN2_PLLBPD;
 404                 break;
 405         default:
 406                 return -ENODEV;
 407         }
 408
 409         if (freq_in && freq_out) {
 410                 ret = pll_factors(&pll_div, freq_out, freq_in);
 411                 if (ret != 0)
 412                         return ret;
 413         }
 414
 415         state->in = freq_in;
 416         state->out = freq_out;
 417
 418         /* Always disable the PLL - it is not safe to leave it running
 419          * while reprogramming it.
 420          */
 421         snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, pwr_mask);
 422
 423         if (!freq_in || !freq_out)
 424                 return 0;
 425
 426         snd_soc_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
 427         snd_soc_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0x1ff);
 428         snd_soc_write(codec, WM8580_PLLA3 + offset,
 429                      (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
 430
 431         reg = snd_soc_read(codec, WM8580_PLLA4 + offset);
 432         reg &= ~0x1b;
 433         reg |= pll_div.prescale | pll_div.postscale << 1 |
 434                 pll_div.freqmode << 3;
 435
 436         snd_soc_write(codec, WM8580_PLLA4 + offset, reg);
 437
 438         /* All done, turn it on */
 439         snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, 0);
 440
 441         return 0;
 442 }
 443
 444 static const int wm8580_sysclk_ratios[] = {
 445         128, 192, 256, 384, 512, 768, 1152,
 446 };
 447
 448 /*
 449  * Set PCM DAI bit size and sample rate.
 450  */
 451 static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
 452                                  struct snd_pcm_hw_params *params,
 453                                  struct snd_soc_dai *dai)
 454 {
 455         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 456         struct snd_soc_codec *codec = rtd->codec;
 457         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 458         u16 paifa = 0;
 459         u16 paifb = 0;
 460         int i, ratio, osr;
 461
 462         /* bit size */
 463         switch (params_format(params)) {
 464         case SNDRV_PCM_FORMAT_S16_LE:
 465                 paifa |= 0x8;
 466                 break;
 467         case SNDRV_PCM_FORMAT_S20_3LE:
 468                 paifa |= 0x0;
 469                 paifb |= WM8580_AIF_LENGTH_20;
 470                 break;
 471         case SNDRV_PCM_FORMAT_S24_LE:
 472                 paifa |= 0x0;
 473                 paifb |= WM8580_AIF_LENGTH_24;
 474                 break;
 475         case SNDRV_PCM_FORMAT_S32_LE:
 476                 paifa |= 0x0;
 477                 paifb |= WM8580_AIF_LENGTH_32;
 478                 break;
 479         default:
 480                 return -EINVAL;
 481         }
 482
 483         /* Look up the SYSCLK ratio; accept only exact matches */
 484         ratio = wm8580->sysclk[dai->driver->id] / params_rate(params);
 485         for (i = 0; i < ARRAY_SIZE(wm8580_sysclk_ratios); i++)
 486                 if (ratio == wm8580_sysclk_ratios[i])
 487                         break;
 488         if (i == ARRAY_SIZE(wm8580_sysclk_ratios)) {
 489                 dev_err(codec->dev, "Invalid clock ratio %d/%d\n",
 490                         wm8580->sysclk[dai->driver->id], params_rate(params));
 491                 return -EINVAL;
 492         }
 493         paifa |= i;
 494         dev_dbg(codec->dev, "Running at %dfs with %dHz clock\n",
 495                 wm8580_sysclk_ratios[i], wm8580->sysclk[dai->driver->id]);
 496
 497         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 498                 switch (ratio) {
 499                 case 128:
 500                 case 192:
 501                         osr = WM8580_DACOSR;
 502                         dev_dbg(codec->dev, "Selecting 64x OSR\n");
 503                         break;
 504                 default:
 505                         osr = 0;
 506                         dev_dbg(codec->dev, "Selecting 128x OSR\n");
 507                         break;
 508                 }
 509
 510                 snd_soc_update_bits(codec, WM8580_PAIF3, WM8580_DACOSR, osr);
 511         }
 512
 513         snd_soc_update_bits(codec, WM8580_PAIF1 + dai->driver->id,
 514                             WM8580_AIF_RATE_MASK | WM8580_AIF_BCLKSEL_MASK,
 515                             paifa);
 516         snd_soc_update_bits(codec, WM8580_PAIF3 + dai->driver->id,
 517                             WM8580_AIF_LENGTH_MASK, paifb);
 518         return 0;
 519 }
 520
 521 static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
 522                                       unsigned int fmt)
 523 {
 524         struct snd_soc_codec *codec = codec_dai->codec;
 525         unsigned int aifa;
 526         unsigned int aifb;
 527         int can_invert_lrclk;
 528
 529         aifa = snd_soc_read(codec, WM8580_PAIF1 + codec_dai->driver->id);
 530         aifb = snd_soc_read(codec, WM8580_PAIF3 + codec_dai->driver->id);
 531
 532         aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
 533
 534         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 535         case SND_SOC_DAIFMT_CBS_CFS:
 536                 aifa &= ~WM8580_AIF_MS;
 537                 break;
 538         case SND_SOC_DAIFMT_CBM_CFM:
 539                 aifa |= WM8580_AIF_MS;
 540                 break;
 541         default:
 542                 return -EINVAL;
 543         }
 544
 545         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 546         case SND_SOC_DAIFMT_I2S:
 547                 can_invert_lrclk = 1;
 548                 aifb |= WM8580_AIF_FMT_I2S;
 549                 break;
 550         case SND_SOC_DAIFMT_RIGHT_J:
 551                 can_invert_lrclk = 1;
 552                 aifb |= WM8580_AIF_FMT_RIGHTJ;
 553                 break;
 554         case SND_SOC_DAIFMT_LEFT_J:
 555                 can_invert_lrclk = 1;
 556                 aifb |= WM8580_AIF_FMT_LEFTJ;
 557                 break;
 558         case SND_SOC_DAIFMT_DSP_A:
 559                 can_invert_lrclk = 0;
 560                 aifb |= WM8580_AIF_FMT_DSP;
 561                 break;
 562         case SND_SOC_DAIFMT_DSP_B:
 563                 can_invert_lrclk = 0;
 564                 aifb |= WM8580_AIF_FMT_DSP;
 565                 aifb |= WM8580_AIF_LRP;
 566                 break;
 567         default:
 568                 return -EINVAL;
 569         }
 570
 571         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 572         case SND_SOC_DAIFMT_NB_NF:
 573                 break;
 574
 575         case SND_SOC_DAIFMT_IB_IF:
 576                 if (!can_invert_lrclk)
 577                         return -EINVAL;
 578                 aifb |= WM8580_AIF_BCP;
 579                 aifb |= WM8580_AIF_LRP;
 580                 break;
 581
 582         case SND_SOC_DAIFMT_IB_NF:
 583                 aifb |= WM8580_AIF_BCP;
 584                 break;
 585
 586         case SND_SOC_DAIFMT_NB_IF:
 587                 if (!can_invert_lrclk)
 588                         return -EINVAL;
 589                 aifb |= WM8580_AIF_LRP;
 590                 break;
 591
 592         default:
 593                 return -EINVAL;
 594         }
 595
 596         snd_soc_write(codec, WM8580_PAIF1 + codec_dai->driver->id, aifa);
 597         snd_soc_write(codec, WM8580_PAIF3 + codec_dai->driver->id, aifb);
 598
 599         return 0;
 600 }
 601
 602 static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 603                                  int div_id, int div)
 604 {
 605         struct snd_soc_codec *codec = codec_dai->codec;
 606         unsigned int reg;
 607
 608         switch (div_id) {
 609         case WM8580_MCLK:
 610                 reg = snd_soc_read(codec, WM8580_PLLB4);
 611                 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
 612
 613                 switch (div) {
 614                 case WM8580_CLKSRC_MCLK:
 615                         /* Input */
 616                         break;
 617
 618                 case WM8580_CLKSRC_PLLA:
 619                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
 620                         break;
 621                 case WM8580_CLKSRC_PLLB:
 622                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
 623                         break;
 624
 625                 case WM8580_CLKSRC_OSC:
 626                         reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
 627                         break;
 628
 629                 default:
 630                         return -EINVAL;
 631                 }
 632                 snd_soc_write(codec, WM8580_PLLB4, reg);
 633                 break;
 634
 635         case WM8580_CLKOUTSRC:
 636                 reg = snd_soc_read(codec, WM8580_PLLB4);
 637                 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
 638
 639                 switch (div) {
 640                 case WM8580_CLKSRC_NONE:
 641                         break;
 642
 643                 case WM8580_CLKSRC_PLLA:
 644                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
 645                         break;
 646
 647                 case WM8580_CLKSRC_PLLB:
 648                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
 649                         break;
 650
 651                 case WM8580_CLKSRC_OSC:
 652                         reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
 653                         break;
 654
 655                 default:
 656                         return -EINVAL;
 657                 }
 658                 snd_soc_write(codec, WM8580_PLLB4, reg);
 659                 break;
 660
 661         default:
 662                 return -EINVAL;
 663         }
 664
 665         return 0;
 666 }
 667
 668 static int wm8580_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 669                              unsigned int freq, int dir)
 670 {
 671         struct snd_soc_codec *codec = dai->codec;
 672         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 673         int ret, sel, sel_mask, sel_shift;
 674
 675         switch (dai->driver->id) {
 676         case WM8580_DAI_PAIFRX:
 677                 sel_mask = 0x3;
 678                 sel_shift = 0;
 679                 break;
 680
 681         case WM8580_DAI_PAIFTX:
 682                 sel_mask = 0xc;
 683                 sel_shift = 2;
 684                 break;
 685
 686         default:
 687                 BUG_ON("Unknown DAI driver ID\n");
 688                 return -EINVAL;
 689         }
 690
 691         switch (clk_id) {
 692         case WM8580_CLKSRC_ADCMCLK:
 693                 if (dai->driver->id != WM8580_DAI_PAIFTX)
 694                         return -EINVAL;
 695                 sel = 0 << sel_shift;
 696                 break;
 697         case WM8580_CLKSRC_PLLA:
 698                 sel = 1 << sel_shift;
 699                 break;
 700         case WM8580_CLKSRC_PLLB:
 701                 sel = 2 << sel_shift;
 702                 break;
 703         case WM8580_CLKSRC_MCLK:
 704                 sel = 3 << sel_shift;
 705                 break;
 706         default:
 707                 dev_err(codec->dev, "Unknown clock %d\n", clk_id);
 708                 return -EINVAL;
 709         }
 710
 711         /* We really should validate PLL settings but not yet */
 712         wm8580->sysclk[dai->driver->id] = freq;
 713
 714         ret = snd_soc_update_bits(codec, WM8580_CLKSEL, sel_mask, sel);
 715         if (ret < 0)
 716                 return ret;
 717
 718         return 0;
 719 }
 720
 721 static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
 722 {
 723         struct snd_soc_codec *codec = codec_dai->codec;
 724         unsigned int reg;
 725
 726         reg = snd_soc_read(codec, WM8580_DAC_CONTROL5);
 727
 728         if (mute)
 729                 reg |= WM8580_DAC_CONTROL5_MUTEALL;
 730         else
 731                 reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
 732
 733         snd_soc_write(codec, WM8580_DAC_CONTROL5, reg);
 734
 735         return 0;
 736 }
 737
 738 static int wm8580_set_bias_level(struct snd_soc_codec *codec,
 739         enum snd_soc_bias_level level)
 740 {
 741         switch (level) {
 742         case SND_SOC_BIAS_ON:
 743         case SND_SOC_BIAS_PREPARE:
 744                 break;
 745
 746         case SND_SOC_BIAS_STANDBY:
 747                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 748                         /* Power up and get individual control of the DACs */
 749                         snd_soc_update_bits(codec, WM8580_PWRDN1,
 750                                             WM8580_PWRDN1_PWDN |
 751                                             WM8580_PWRDN1_ALLDACPD, 0);
 752
 753                         /* Make VMID high impedance */
 754                         snd_soc_update_bits(codec, WM8580_ADC_CONTROL1,
 755                                             0x100, 0);
 756                 }
 757                 break;
 758
 759         case SND_SOC_BIAS_OFF:
 760                 snd_soc_update_bits(codec, WM8580_PWRDN1,
 761                                     WM8580_PWRDN1_PWDN, WM8580_PWRDN1_PWDN);
 762                 break;
 763         }
 764         codec->dapm.bias_level = level;
 765         return 0;
 766 }
 767
 768 #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 769                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 770
 771 static const struct snd_soc_dai_ops wm8580_dai_ops_playback = {
 772         .set_sysclk     = wm8580_set_sysclk,
 773         .hw_params      = wm8580_paif_hw_params,
 774         .set_fmt        = wm8580_set_paif_dai_fmt,
 775         .set_clkdiv     = wm8580_set_dai_clkdiv,
 776         .set_pll        = wm8580_set_dai_pll,
 777         .digital_mute   = wm8580_digital_mute,
 778 };
 779
 780 static const struct snd_soc_dai_ops wm8580_dai_ops_capture = {
 781         .set_sysclk     = wm8580_set_sysclk,
 782         .hw_params      = wm8580_paif_hw_params,
 783         .set_fmt        = wm8580_set_paif_dai_fmt,
 784         .set_clkdiv     = wm8580_set_dai_clkdiv,
 785         .set_pll        = wm8580_set_dai_pll,
 786 };
 787
 788 static struct snd_soc_dai_driver wm8580_dai[] = {
 789         {
 790                 .name = "wm8580-hifi-playback",
 791                 .id     = WM8580_DAI_PAIFRX,
 792                 .playback = {
 793                         .stream_name = "Playback",
 794                         .channels_min = 1,
 795                         .channels_max = 6,
 796                         .rates = SNDRV_PCM_RATE_8000_192000,
 797                         .formats = WM8580_FORMATS,
 798                 },
 799                 .ops = &wm8580_dai_ops_playback,
 800         },
 801         {
 802                 .name = "wm8580-hifi-capture",
 803                 .id     =       WM8580_DAI_PAIFTX,
 804                 .capture = {
 805                         .stream_name = "Capture",
 806                         .channels_min = 2,
 807                         .channels_max = 2,
 808                         .rates = SNDRV_PCM_RATE_8000_192000,
 809                         .formats = WM8580_FORMATS,
 810                 },
 811                 .ops = &wm8580_dai_ops_capture,
 812         },
 813 };
 814
 815 static int wm8580_probe(struct snd_soc_codec *codec)
 816 {
 817         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 818         int ret = 0,i;
 819
 820         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8580->control_type);
 821         if (ret < 0) {
 822                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 823                 return ret;
 824         }
 825
 826         for (i = 0; i < ARRAY_SIZE(wm8580->supplies); i++)
 827                 wm8580->supplies[i].supply = wm8580_supply_names[i];
 828
 829         ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8580->supplies),
 830                                  wm8580->supplies);
 831         if (ret != 0) {
 832                 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
 833                 return ret;
 834         }
 835
 836         ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies),
 837                                     wm8580->supplies);
 838         if (ret != 0) {
 839                 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
 840                 goto err_regulator_get;
 841         }
 842
 843         /* Get the codec into a known state */
 844         ret = snd_soc_write(codec, WM8580_RESET, 0);
 845         if (ret != 0) {
 846                 dev_err(codec->dev, "Failed to reset codec: %d\n", ret);
 847                 goto err_regulator_enable;
 848         }
 849
 850         wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 851
 852         return 0;
 853
 854 err_regulator_enable:
 855         regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 856 err_regulator_get:
 857         regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 858         return ret;
 859 }
 860
 861 /* power down chip */
 862 static int wm8580_remove(struct snd_soc_codec *codec)
 863 {
 864         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 865
 866         wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
 867
 868         regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 869         regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 870
 871         return 0;
 872 }
 873
 874 static struct snd_soc_codec_driver soc_codec_dev_wm8580 = {
 875         .probe =        wm8580_probe,
 876         .remove =       wm8580_remove,
 877         .set_bias_level = wm8580_set_bias_level,
 878         .reg_cache_size = ARRAY_SIZE(wm8580_reg),
 879         .reg_word_size = sizeof(u16),
 880         .reg_cache_default = wm8580_reg,
 881
 882         .controls = wm8580_snd_controls,
 883         .num_controls = ARRAY_SIZE(wm8580_snd_controls),
 884         .dapm_widgets = wm8580_dapm_widgets,
 885         .num_dapm_widgets = ARRAY_SIZE(wm8580_dapm_widgets),
 886         .dapm_routes = wm8580_dapm_routes,
 887         .num_dapm_routes = ARRAY_SIZE(wm8580_dapm_routes),
 888 };
 889
 890 static const struct of_device_id wm8580_of_match[] = {
 891         { .compatible = "wlf,wm8580" },
 892         { },
 893 };
 894
 895 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 896 static int wm8580_i2c_probe(struct i2c_client *i2c,
 897                             const struct i2c_device_id *id)
 898 {
 899         struct wm8580_priv *wm8580;
 900         int ret;
 901
 902         wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
 903         if (wm8580 == NULL)
 904                 return -ENOMEM;
 905
 906         i2c_set_clientdata(i2c, wm8580);
 907         wm8580->control_type = SND_SOC_I2C;
 908
 909         ret =  snd_soc_register_codec(&i2c->dev,
 910                         &soc_codec_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));
 911         if (ret < 0)
 912                 kfree(wm8580);
 913         return ret;
 914 }
 915
 916 static int wm8580_i2c_remove(struct i2c_client *client)
 917 {
 918         snd_soc_unregister_codec(&client->dev);
 919         kfree(i2c_get_clientdata(client));
 920         return 0;
 921 }
 922
 923 static const struct i2c_device_id wm8580_i2c_id[] = {
 924         { "wm8580", 0 },
 925         { }
 926 };
 927 MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
 928
 929 static struct i2c_driver wm8580_i2c_driver = {
 930         .driver = {
 931                 .name = "wm8580",
 932                 .owner = THIS_MODULE,
 933                 .of_match_table = wm8580_of_match,
 934         },
 935         .probe =    wm8580_i2c_probe,
 936         .remove =   wm8580_i2c_remove,
 937         .id_table = wm8580_i2c_id,
 938 };
 939 #endif
 940
 941 static int __init wm8580_modinit(void)
 942 {
 943         int ret = 0;
 944
 945 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 946         ret = i2c_add_driver(&wm8580_i2c_driver);
 947         if (ret != 0) {
 948                 pr_err("Failed to register WM8580 I2C driver: %d\n", ret);
 949         }
 950 #endif
 951
 952         return ret;
 953 }
 954 module_init(wm8580_modinit);
 955
 956 static void __exit wm8580_exit(void)
 957 {
 958 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 959         i2c_del_driver(&wm8580_i2c_driver);
 960 #endif
 961 }
 962 module_exit(wm8580_exit);
 963
 964 MODULE_DESCRIPTION("ASoC WM8580 driver");
 965 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 966 MODULE_LICENSE("GPL");