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/platform_device.h>
  27 #include <linux/regulator/consumer.h>
  28 #include <linux/slab.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_2r(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 #define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, \
 227                                     xinvert, tlv_array)                 \
 228 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 229         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 230                 SNDRV_CTL_ELEM_ACCESS_READWRITE,  \
 231         .tlv.p = (tlv_array), \
 232         .info = snd_soc_info_volsw_2r, \
 233         .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
 234         .private_value = (unsigned long)&(struct soc_mixer_control) \
 235                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 236                 .max = xmax, .invert = xinvert} }
 237
 238 static const struct snd_kcontrol_new wm8580_snd_controls[] = {
 239 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
 240                             WM8580_DIGITAL_ATTENUATION_DACL1,
 241                             WM8580_DIGITAL_ATTENUATION_DACR1,
 242                             0, 0xff, 0, dac_tlv),
 243 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
 244                             WM8580_DIGITAL_ATTENUATION_DACL2,
 245                             WM8580_DIGITAL_ATTENUATION_DACR2,
 246                             0, 0xff, 0, dac_tlv),
 247 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
 248                             WM8580_DIGITAL_ATTENUATION_DACL3,
 249                             WM8580_DIGITAL_ATTENUATION_DACR3,
 250                             0, 0xff, 0, dac_tlv),
 251
 252 SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
 253 SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
 254 SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
 255
 256 SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4,  0, 1, 1, 0),
 257 SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4,  2, 3, 1, 0),
 258 SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4,  4, 5, 1, 0),
 259
 260 SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
 261 SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 1),
 262 SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 1),
 263 SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 1),
 264
 265 SOC_DOUBLE("Capture Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 1),
 266 SOC_SINGLE("Capture High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
 267 };
 268
 269 static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
 270 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
 271 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
 272 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
 273
 274 SND_SOC_DAPM_OUTPUT("VOUT1L"),
 275 SND_SOC_DAPM_OUTPUT("VOUT1R"),
 276 SND_SOC_DAPM_OUTPUT("VOUT2L"),
 277 SND_SOC_DAPM_OUTPUT("VOUT2R"),
 278 SND_SOC_DAPM_OUTPUT("VOUT3L"),
 279 SND_SOC_DAPM_OUTPUT("VOUT3R"),
 280
 281 SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
 282
 283 SND_SOC_DAPM_INPUT("AINL"),
 284 SND_SOC_DAPM_INPUT("AINR"),
 285 };
 286
 287 static const struct snd_soc_dapm_route audio_map[] = {
 288         { "VOUT1L", NULL, "DAC1" },
 289         { "VOUT1R", NULL, "DAC1" },
 290
 291         { "VOUT2L", NULL, "DAC2" },
 292         { "VOUT2R", NULL, "DAC2" },
 293
 294         { "VOUT3L", NULL, "DAC3" },
 295         { "VOUT3R", NULL, "DAC3" },
 296
 297         { "ADC", NULL, "AINL" },
 298         { "ADC", NULL, "AINR" },
 299 };
 300
 301 static int wm8580_add_widgets(struct snd_soc_codec *codec)
 302 {
 303         struct snd_soc_dapm_context *dapm = &codec->dapm;
 304
 305         snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets,
 306                                   ARRAY_SIZE(wm8580_dapm_widgets));
 307         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 308
 309         return 0;
 310 }
 311
 312 /* PLL divisors */
 313 struct _pll_div {
 314         u32 prescale:1;
 315         u32 postscale:1;
 316         u32 freqmode:2;
 317         u32 n:4;
 318         u32 k:24;
 319 };
 320
 321 /* The size in bits of the pll divide */
 322 #define FIXED_PLL_SIZE (1 << 22)
 323
 324 /* PLL rate to output rate divisions */
 325 static struct {
 326         unsigned int div;
 327         unsigned int freqmode;
 328         unsigned int postscale;
 329 } post_table[] = {
 330         {  2,  0, 0 },
 331         {  4,  0, 1 },
 332         {  4,  1, 0 },
 333         {  8,  1, 1 },
 334         {  8,  2, 0 },
 335         { 16,  2, 1 },
 336         { 12,  3, 0 },
 337         { 24,  3, 1 }
 338 };
 339
 340 static int pll_factors(struct _pll_div *pll_div, unsigned int target,
 341                        unsigned int source)
 342 {
 343         u64 Kpart;
 344         unsigned int K, Ndiv, Nmod;
 345         int i;
 346
 347         pr_debug("wm8580: PLL %uHz->%uHz\n", source, target);
 348
 349         /* Scale the output frequency up; the PLL should run in the
 350          * region of 90-100MHz.
 351          */
 352         for (i = 0; i < ARRAY_SIZE(post_table); i++) {
 353                 if (target * post_table[i].div >=  90000000 &&
 354                     target * post_table[i].div <= 100000000) {
 355                         pll_div->freqmode = post_table[i].freqmode;
 356                         pll_div->postscale = post_table[i].postscale;
 357                         target *= post_table[i].div;
 358                         break;
 359                 }
 360         }
 361
 362         if (i == ARRAY_SIZE(post_table)) {
 363                 printk(KERN_ERR "wm8580: Unable to scale output frequency "
 364                        "%u\n", target);
 365                 return -EINVAL;
 366         }
 367
 368         Ndiv = target / source;
 369
 370         if (Ndiv < 5) {
 371                 source /= 2;
 372                 pll_div->prescale = 1;
 373                 Ndiv = target / source;
 374         } else
 375                 pll_div->prescale = 0;
 376
 377         if ((Ndiv < 5) || (Ndiv > 13)) {
 378                 printk(KERN_ERR
 379                         "WM8580 N=%u outside supported range\n", Ndiv);
 380                 return -EINVAL;
 381         }
 382
 383         pll_div->n = Ndiv;
 384         Nmod = target % source;
 385         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 386
 387         do_div(Kpart, source);
 388
 389         K = Kpart & 0xFFFFFFFF;
 390
 391         pll_div->k = K;
 392
 393         pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
 394                  pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
 395                  pll_div->postscale);
 396
 397         return 0;
 398 }
 399
 400 static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 401                 int source, unsigned int freq_in, unsigned int freq_out)
 402 {
 403         int offset;
 404         struct snd_soc_codec *codec = codec_dai->codec;
 405         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 406         struct pll_state *state;
 407         struct _pll_div pll_div;
 408         unsigned int reg;
 409         unsigned int pwr_mask;
 410         int ret;
 411
 412         /* GCC isn't able to work out the ifs below for initialising/using
 413          * pll_div so suppress warnings.
 414          */
 415         memset(&pll_div, 0, sizeof(pll_div));
 416
 417         switch (pll_id) {
 418         case WM8580_PLLA:
 419                 state = &wm8580->a;
 420                 offset = 0;
 421                 pwr_mask = WM8580_PWRDN2_PLLAPD;
 422                 break;
 423         case WM8580_PLLB:
 424                 state = &wm8580->b;
 425                 offset = 4;
 426                 pwr_mask = WM8580_PWRDN2_PLLBPD;
 427                 break;
 428         default:
 429                 return -ENODEV;
 430         }
 431
 432         if (freq_in && freq_out) {
 433                 ret = pll_factors(&pll_div, freq_out, freq_in);
 434                 if (ret != 0)
 435                         return ret;
 436         }
 437
 438         state->in = freq_in;
 439         state->out = freq_out;
 440
 441         /* Always disable the PLL - it is not safe to leave it running
 442          * while reprogramming it.
 443          */
 444         reg = snd_soc_read(codec, WM8580_PWRDN2);
 445         snd_soc_write(codec, WM8580_PWRDN2, reg | pwr_mask);
 446
 447         if (!freq_in || !freq_out)
 448                 return 0;
 449
 450         snd_soc_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
 451         snd_soc_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0x1ff);
 452         snd_soc_write(codec, WM8580_PLLA3 + offset,
 453                      (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
 454
 455         reg = snd_soc_read(codec, WM8580_PLLA4 + offset);
 456         reg &= ~0x1b;
 457         reg |= pll_div.prescale | pll_div.postscale << 1 |
 458                 pll_div.freqmode << 3;
 459
 460         snd_soc_write(codec, WM8580_PLLA4 + offset, reg);
 461
 462         /* All done, turn it on */
 463         reg = snd_soc_read(codec, WM8580_PWRDN2);
 464         snd_soc_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
 465
 466         return 0;
 467 }
 468
 469 static const int wm8580_sysclk_ratios[] = {
 470         128, 192, 256, 384, 512, 768, 1152,
 471 };
 472
 473 /*
 474  * Set PCM DAI bit size and sample rate.
 475  */
 476 static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
 477                                  struct snd_pcm_hw_params *params,
 478                                  struct snd_soc_dai *dai)
 479 {
 480         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 481         struct snd_soc_codec *codec = rtd->codec;
 482         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 483         u16 paifa = 0;
 484         u16 paifb = 0;
 485         int i, ratio, osr;
 486
 487         /* bit size */
 488         switch (params_format(params)) {
 489         case SNDRV_PCM_FORMAT_S16_LE:
 490                 paifa |= 0x8;
 491                 break;
 492         case SNDRV_PCM_FORMAT_S20_3LE:
 493                 paifa |= 0x0;
 494                 paifb |= WM8580_AIF_LENGTH_20;
 495                 break;
 496         case SNDRV_PCM_FORMAT_S24_LE:
 497                 paifa |= 0x0;
 498                 paifb |= WM8580_AIF_LENGTH_24;
 499                 break;
 500         case SNDRV_PCM_FORMAT_S32_LE:
 501                 paifa |= 0x0;
 502                 paifb |= WM8580_AIF_LENGTH_32;
 503                 break;
 504         default:
 505                 return -EINVAL;
 506         }
 507
 508         /* Look up the SYSCLK ratio; accept only exact matches */
 509         ratio = wm8580->sysclk[dai->driver->id] / params_rate(params);
 510         for (i = 0; i < ARRAY_SIZE(wm8580_sysclk_ratios); i++)
 511                 if (ratio == wm8580_sysclk_ratios[i])
 512                         break;
 513         if (i == ARRAY_SIZE(wm8580_sysclk_ratios)) {
 514                 dev_err(codec->dev, "Invalid clock ratio %d/%d\n",
 515                         wm8580->sysclk[dai->driver->id], params_rate(params));
 516                 return -EINVAL;
 517         }
 518         paifa |= i;
 519         dev_dbg(codec->dev, "Running at %dfs with %dHz clock\n",
 520                 wm8580_sysclk_ratios[i], wm8580->sysclk[dai->driver->id]);
 521
 522         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 523                 switch (ratio) {
 524                 case 128:
 525                 case 192:
 526                         osr = WM8580_DACOSR;
 527                         dev_dbg(codec->dev, "Selecting 64x OSR\n");
 528                         break;
 529                 default:
 530                         osr = 0;
 531                         dev_dbg(codec->dev, "Selecting 128x OSR\n");
 532                         break;
 533                 }
 534
 535                 snd_soc_update_bits(codec, WM8580_PAIF3, WM8580_DACOSR, osr);
 536         }
 537
 538         snd_soc_update_bits(codec, WM8580_PAIF1 + dai->driver->id,
 539                             WM8580_AIF_RATE_MASK | WM8580_AIF_BCLKSEL_MASK,
 540                             paifa);
 541         snd_soc_update_bits(codec, WM8580_PAIF3 + dai->driver->id,
 542                             WM8580_AIF_LENGTH_MASK, paifb);
 543         return 0;
 544 }
 545
 546 static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
 547                                       unsigned int fmt)
 548 {
 549         struct snd_soc_codec *codec = codec_dai->codec;
 550         unsigned int aifa;
 551         unsigned int aifb;
 552         int can_invert_lrclk;
 553
 554         aifa = snd_soc_read(codec, WM8580_PAIF1 + codec_dai->driver->id);
 555         aifb = snd_soc_read(codec, WM8580_PAIF3 + codec_dai->driver->id);
 556
 557         aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
 558
 559         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 560         case SND_SOC_DAIFMT_CBS_CFS:
 561                 aifa &= ~WM8580_AIF_MS;
 562                 break;
 563         case SND_SOC_DAIFMT_CBM_CFM:
 564                 aifa |= WM8580_AIF_MS;
 565                 break;
 566         default:
 567                 return -EINVAL;
 568         }
 569
 570         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 571         case SND_SOC_DAIFMT_I2S:
 572                 can_invert_lrclk = 1;
 573                 aifb |= WM8580_AIF_FMT_I2S;
 574                 break;
 575         case SND_SOC_DAIFMT_RIGHT_J:
 576                 can_invert_lrclk = 1;
 577                 aifb |= WM8580_AIF_FMT_RIGHTJ;
 578                 break;
 579         case SND_SOC_DAIFMT_LEFT_J:
 580                 can_invert_lrclk = 1;
 581                 aifb |= WM8580_AIF_FMT_LEFTJ;
 582                 break;
 583         case SND_SOC_DAIFMT_DSP_A:
 584                 can_invert_lrclk = 0;
 585                 aifb |= WM8580_AIF_FMT_DSP;
 586                 break;
 587         case SND_SOC_DAIFMT_DSP_B:
 588                 can_invert_lrclk = 0;
 589                 aifb |= WM8580_AIF_FMT_DSP;
 590                 aifb |= WM8580_AIF_LRP;
 591                 break;
 592         default:
 593                 return -EINVAL;
 594         }
 595
 596         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 597         case SND_SOC_DAIFMT_NB_NF:
 598                 break;
 599
 600         case SND_SOC_DAIFMT_IB_IF:
 601                 if (!can_invert_lrclk)
 602                         return -EINVAL;
 603                 aifb |= WM8580_AIF_BCP;
 604                 aifb |= WM8580_AIF_LRP;
 605                 break;
 606
 607         case SND_SOC_DAIFMT_IB_NF:
 608                 aifb |= WM8580_AIF_BCP;
 609                 break;
 610
 611         case SND_SOC_DAIFMT_NB_IF:
 612                 if (!can_invert_lrclk)
 613                         return -EINVAL;
 614                 aifb |= WM8580_AIF_LRP;
 615                 break;
 616
 617         default:
 618                 return -EINVAL;
 619         }
 620
 621         snd_soc_write(codec, WM8580_PAIF1 + codec_dai->driver->id, aifa);
 622         snd_soc_write(codec, WM8580_PAIF3 + codec_dai->driver->id, aifb);
 623
 624         return 0;
 625 }
 626
 627 static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 628                                  int div_id, int div)
 629 {
 630         struct snd_soc_codec *codec = codec_dai->codec;
 631         unsigned int reg;
 632
 633         switch (div_id) {
 634         case WM8580_MCLK:
 635                 reg = snd_soc_read(codec, WM8580_PLLB4);
 636                 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
 637
 638                 switch (div) {
 639                 case WM8580_CLKSRC_MCLK:
 640                         /* Input */
 641                         break;
 642
 643                 case WM8580_CLKSRC_PLLA:
 644                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
 645                         break;
 646                 case WM8580_CLKSRC_PLLB:
 647                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
 648                         break;
 649
 650                 case WM8580_CLKSRC_OSC:
 651                         reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
 652                         break;
 653
 654                 default:
 655                         return -EINVAL;
 656                 }
 657                 snd_soc_write(codec, WM8580_PLLB4, reg);
 658                 break;
 659
 660         case WM8580_CLKOUTSRC:
 661                 reg = snd_soc_read(codec, WM8580_PLLB4);
 662                 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
 663
 664                 switch (div) {
 665                 case WM8580_CLKSRC_NONE:
 666                         break;
 667
 668                 case WM8580_CLKSRC_PLLA:
 669                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
 670                         break;
 671
 672                 case WM8580_CLKSRC_PLLB:
 673                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
 674                         break;
 675
 676                 case WM8580_CLKSRC_OSC:
 677                         reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
 678                         break;
 679
 680                 default:
 681                         return -EINVAL;
 682                 }
 683                 snd_soc_write(codec, WM8580_PLLB4, reg);
 684                 break;
 685
 686         default:
 687                 return -EINVAL;
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int wm8580_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 694                              unsigned int freq, int dir)
 695 {
 696         struct snd_soc_codec *codec = dai->codec;
 697         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 698         int sel, sel_mask, sel_shift;
 699
 700         switch (dai->driver->id) {
 701         case WM8580_DAI_PAIFRX:
 702                 sel_mask = 0x3;
 703                 sel_shift = 0;
 704                 break;
 705
 706         case WM8580_DAI_PAIFTX:
 707                 sel_mask = 0xc;
 708                 sel_shift = 2;
 709                 break;
 710
 711         default:
 712                 BUG_ON("Unknown DAI driver ID\n");
 713                 return -EINVAL;
 714         }
 715
 716         switch (clk_id) {
 717         case WM8580_CLKSRC_ADCMCLK:
 718                 if (dai->driver->id != WM8580_DAI_PAIFTX)
 719                         return -EINVAL;
 720                 sel = 0 << sel_shift;
 721                 break;
 722         case WM8580_CLKSRC_PLLA:
 723                 sel = 1 << sel_shift;
 724                 break;
 725         case WM8580_CLKSRC_PLLB:
 726                 sel = 2 << sel_shift;
 727                 break;
 728         case WM8580_CLKSRC_MCLK:
 729                 sel = 3 << sel_shift;
 730                 break;
 731         default:
 732                 dev_err(codec->dev, "Unknown clock %d\n", clk_id);
 733                 return -EINVAL;
 734         }
 735
 736         /* We really should validate PLL settings but not yet */
 737         wm8580->sysclk[dai->driver->id] = freq;
 738
 739         return snd_soc_update_bits(codec, WM8580_CLKSEL, sel_mask, sel);
 740 }
 741
 742 static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
 743 {
 744         struct snd_soc_codec *codec = codec_dai->codec;
 745         unsigned int reg;
 746
 747         reg = snd_soc_read(codec, WM8580_DAC_CONTROL5);
 748
 749         if (mute)
 750                 reg |= WM8580_DAC_CONTROL5_MUTEALL;
 751         else
 752                 reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
 753
 754         snd_soc_write(codec, WM8580_DAC_CONTROL5, reg);
 755
 756         return 0;
 757 }
 758
 759 static int wm8580_set_bias_level(struct snd_soc_codec *codec,
 760         enum snd_soc_bias_level level)
 761 {
 762         u16 reg;
 763         switch (level) {
 764         case SND_SOC_BIAS_ON:
 765         case SND_SOC_BIAS_PREPARE:
 766                 break;
 767
 768         case SND_SOC_BIAS_STANDBY:
 769                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 770                         /* Power up and get individual control of the DACs */
 771                         reg = snd_soc_read(codec, WM8580_PWRDN1);
 772                         reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
 773                         snd_soc_write(codec, WM8580_PWRDN1, reg);
 774
 775                         /* Make VMID high impedance */
 776                         reg = snd_soc_read(codec,  WM8580_ADC_CONTROL1);
 777                         reg &= ~0x100;
 778                         snd_soc_write(codec, WM8580_ADC_CONTROL1, reg);
 779                 }
 780                 break;
 781
 782         case SND_SOC_BIAS_OFF:
 783                 reg = snd_soc_read(codec, WM8580_PWRDN1);
 784                 snd_soc_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
 785                 break;
 786         }
 787         codec->dapm.bias_level = level;
 788         return 0;
 789 }
 790
 791 #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 792                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 793
 794 static struct snd_soc_dai_ops wm8580_dai_ops_playback = {
 795         .set_sysclk     = wm8580_set_sysclk,
 796         .hw_params      = wm8580_paif_hw_params,
 797         .set_fmt        = wm8580_set_paif_dai_fmt,
 798         .set_clkdiv     = wm8580_set_dai_clkdiv,
 799         .set_pll        = wm8580_set_dai_pll,
 800         .digital_mute   = wm8580_digital_mute,
 801 };
 802
 803 static struct snd_soc_dai_ops wm8580_dai_ops_capture = {
 804         .set_sysclk     = wm8580_set_sysclk,
 805         .hw_params      = wm8580_paif_hw_params,
 806         .set_fmt        = wm8580_set_paif_dai_fmt,
 807         .set_clkdiv     = wm8580_set_dai_clkdiv,
 808         .set_pll        = wm8580_set_dai_pll,
 809 };
 810
 811 static struct snd_soc_dai_driver wm8580_dai[] = {
 812         {
 813                 .name = "wm8580-hifi-playback",
 814                 .id     = WM8580_DAI_PAIFRX,
 815                 .playback = {
 816                         .stream_name = "Playback",
 817                         .channels_min = 1,
 818                         .channels_max = 6,
 819                         .rates = SNDRV_PCM_RATE_8000_192000,
 820                         .formats = WM8580_FORMATS,
 821                 },
 822                 .ops = &wm8580_dai_ops_playback,
 823         },
 824         {
 825                 .name = "wm8580-hifi-capture",
 826                 .id     =       WM8580_DAI_PAIFTX,
 827                 .capture = {
 828                         .stream_name = "Capture",
 829                         .channels_min = 2,
 830                         .channels_max = 2,
 831                         .rates = SNDRV_PCM_RATE_8000_192000,
 832                         .formats = WM8580_FORMATS,
 833                 },
 834                 .ops = &wm8580_dai_ops_capture,
 835         },
 836 };
 837
 838 static int wm8580_probe(struct snd_soc_codec *codec)
 839 {
 840         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 841         int ret = 0,i;
 842
 843         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8580->control_type);
 844         if (ret < 0) {
 845                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 846                 return ret;
 847         }
 848
 849         for (i = 0; i < ARRAY_SIZE(wm8580->supplies); i++)
 850                 wm8580->supplies[i].supply = wm8580_supply_names[i];
 851
 852         ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8580->supplies),
 853                                  wm8580->supplies);
 854         if (ret != 0) {
 855                 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
 856                 return ret;
 857         }
 858
 859         ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies),
 860                                     wm8580->supplies);
 861         if (ret != 0) {
 862                 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
 863                 goto err_regulator_get;
 864         }
 865
 866         /* Get the codec into a known state */
 867         ret = snd_soc_write(codec, WM8580_RESET, 0);
 868         if (ret != 0) {
 869                 dev_err(codec->dev, "Failed to reset codec: %d\n", ret);
 870                 goto err_regulator_enable;
 871         }
 872
 873         wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 874
 875         snd_soc_add_controls(codec, wm8580_snd_controls,
 876                              ARRAY_SIZE(wm8580_snd_controls));
 877         wm8580_add_widgets(codec);
 878
 879         return 0;
 880
 881 err_regulator_enable:
 882         regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 883 err_regulator_get:
 884         regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 885         return ret;
 886 }
 887
 888 /* power down chip */
 889 static int wm8580_remove(struct snd_soc_codec *codec)
 890 {
 891         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 892
 893         wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
 894
 895         regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 896         regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 897
 898         return 0;
 899 }
 900
 901 static struct snd_soc_codec_driver soc_codec_dev_wm8580 = {
 902         .probe =        wm8580_probe,
 903         .remove =       wm8580_remove,
 904         .set_bias_level = wm8580_set_bias_level,
 905         .reg_cache_size = ARRAY_SIZE(wm8580_reg),
 906         .reg_word_size = sizeof(u16),
 907         .reg_cache_default = wm8580_reg,
 908 };
 909
 910 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 911 static int wm8580_i2c_probe(struct i2c_client *i2c,
 912                             const struct i2c_device_id *id)
 913 {
 914         struct wm8580_priv *wm8580;
 915         int ret;
 916
 917         wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
 918         if (wm8580 == NULL)
 919                 return -ENOMEM;
 920
 921         i2c_set_clientdata(i2c, wm8580);
 922         wm8580->control_type = SND_SOC_I2C;
 923
 924         ret =  snd_soc_register_codec(&i2c->dev,
 925                         &soc_codec_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));
 926         if (ret < 0)
 927                 kfree(wm8580);
 928         return ret;
 929 }
 930
 931 static int wm8580_i2c_remove(struct i2c_client *client)
 932 {
 933         snd_soc_unregister_codec(&client->dev);
 934         kfree(i2c_get_clientdata(client));
 935         return 0;
 936 }
 937
 938 static const struct i2c_device_id wm8580_i2c_id[] = {
 939         { "wm8580", 0 },
 940         { }
 941 };
 942 MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
 943
 944 static struct i2c_driver wm8580_i2c_driver = {
 945         .driver = {
 946                 .name = "wm8580-codec",
 947                 .owner = THIS_MODULE,
 948         },
 949         .probe =    wm8580_i2c_probe,
 950         .remove =   wm8580_i2c_remove,
 951         .id_table = wm8580_i2c_id,
 952 };
 953 #endif
 954
 955 static int __init wm8580_modinit(void)
 956 {
 957         int ret = 0;
 958
 959 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 960         ret = i2c_add_driver(&wm8580_i2c_driver);
 961         if (ret != 0) {
 962                 pr_err("Failed to register WM8580 I2C driver: %d\n", ret);
 963         }
 964 #endif
 965
 966         return ret;
 967 }
 968 module_init(wm8580_modinit);
 969
 970 static void __exit wm8580_exit(void)
 971 {
 972 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 973         i2c_del_driver(&wm8580_i2c_driver);
 974 #endif
 975 }
 976 module_exit(wm8580_exit);
 977
 978 MODULE_DESCRIPTION("ASoC WM8580 driver");
 979 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 980 MODULE_LICENSE("GPL");