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/soc-dapm.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 /* PLLB4 (register 7h) */
  98 #define WM8580_PLLB4_MCLKOUTSRC_MASK   0x60
  99 #define WM8580_PLLB4_MCLKOUTSRC_PLLA   0x20
 100 #define WM8580_PLLB4_MCLKOUTSRC_PLLB   0x40
 101 #define WM8580_PLLB4_MCLKOUTSRC_OSC    0x60
 102
 103 #define WM8580_PLLB4_CLKOUTSRC_MASK    0x180
 104 #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
 105 #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
 106 #define WM8580_PLLB4_CLKOUTSRC_OSCCLK  0x180
 107
 108 /* CLKSEL (register 8h) */
 109 #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
 110 #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
 111 #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
 112
 113 /* AIF control 1 (registers 9h-bh) */
 114 #define WM8580_AIF_RATE_MASK       0x7
 115 #define WM8580_AIF_RATE_128        0x0
 116 #define WM8580_AIF_RATE_192        0x1
 117 #define WM8580_AIF_RATE_256        0x2
 118 #define WM8580_AIF_RATE_384        0x3
 119 #define WM8580_AIF_RATE_512        0x4
 120 #define WM8580_AIF_RATE_768        0x5
 121 #define WM8580_AIF_RATE_1152       0x6
 122
 123 #define WM8580_AIF_BCLKSEL_MASK   0x18
 124 #define WM8580_AIF_BCLKSEL_64     0x00
 125 #define WM8580_AIF_BCLKSEL_128    0x08
 126 #define WM8580_AIF_BCLKSEL_256    0x10
 127 #define WM8580_AIF_BCLKSEL_SYSCLK 0x18
 128
 129 #define WM8580_AIF_MS             0x20
 130
 131 #define WM8580_AIF_CLKSRC_MASK    0xc0
 132 #define WM8580_AIF_CLKSRC_PLLA    0x40
 133 #define WM8580_AIF_CLKSRC_PLLB    0x40
 134 #define WM8580_AIF_CLKSRC_MCLK    0xc0
 135
 136 /* AIF control 2 (registers ch-eh) */
 137 #define WM8580_AIF_FMT_MASK    0x03
 138 #define WM8580_AIF_FMT_RIGHTJ  0x00
 139 #define WM8580_AIF_FMT_LEFTJ   0x01
 140 #define WM8580_AIF_FMT_I2S     0x02
 141 #define WM8580_AIF_FMT_DSP     0x03
 142
 143 #define WM8580_AIF_LENGTH_MASK   0x0c
 144 #define WM8580_AIF_LENGTH_16     0x00
 145 #define WM8580_AIF_LENGTH_20     0x04
 146 #define WM8580_AIF_LENGTH_24     0x08
 147 #define WM8580_AIF_LENGTH_32     0x0c
 148
 149 #define WM8580_AIF_LRP         0x10
 150 #define WM8580_AIF_BCP         0x20
 151
 152 /* Powerdown Register 1 (register 32h) */
 153 #define WM8580_PWRDN1_PWDN     0x001
 154 #define WM8580_PWRDN1_ALLDACPD 0x040
 155
 156 /* Powerdown Register 2 (register 33h) */
 157 #define WM8580_PWRDN2_OSSCPD   0x001
 158 #define WM8580_PWRDN2_PLLAPD   0x002
 159 #define WM8580_PWRDN2_PLLBPD   0x004
 160 #define WM8580_PWRDN2_SPDIFPD  0x008
 161 #define WM8580_PWRDN2_SPDIFTXD 0x010
 162 #define WM8580_PWRDN2_SPDIFRXD 0x020
 163
 164 #define WM8580_DAC_CONTROL5_MUTEALL 0x10
 165
 166 /*
 167  * wm8580 register cache
 168  * We can't read the WM8580 register space when we
 169  * are using 2 wire for device control, so we cache them instead.
 170  */
 171 static const u16 wm8580_reg[] = {
 172         0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
 173         0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
 174         0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
 175         0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
 176         0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
 177         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
 178         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
 179         0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
 180         0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
 181         0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
 182         0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
 183         0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
 184         0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
 185         0x0000, 0x0000 /*R53*/
 186 };
 187
 188 struct pll_state {
 189         unsigned int in;
 190         unsigned int out;
 191 };
 192
 193 #define WM8580_NUM_SUPPLIES 3
 194 static const char *wm8580_supply_names[WM8580_NUM_SUPPLIES] = {
 195         "AVDD",
 196         "DVDD",
 197         "PVDD",
 198 };
 199
 200 /* codec private data */
 201 struct wm8580_priv {
 202         enum snd_soc_control_type control_type;
 203         struct regulator_bulk_data supplies[WM8580_NUM_SUPPLIES];
 204         u16 reg_cache[WM8580_MAX_REGISTER + 1];
 205         struct pll_state a;
 206         struct pll_state b;
 207 };
 208
 209 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
 210
 211 static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
 212                          struct snd_ctl_elem_value *ucontrol)
 213 {
 214         struct soc_mixer_control *mc =
 215                 (struct soc_mixer_control *)kcontrol->private_value;
 216         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 217         u16 *reg_cache = codec->reg_cache;
 218         unsigned int reg = mc->reg;
 219         unsigned int reg2 = mc->rreg;
 220         int ret;
 221
 222         /* Clear the register cache so we write without VU set */
 223         reg_cache[reg] = 0;
 224         reg_cache[reg2] = 0;
 225
 226         ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
 227         if (ret < 0)
 228                 return ret;
 229
 230         /* Now write again with the volume update bit set */
 231         snd_soc_update_bits(codec, reg, 0x100, 0x100);
 232         snd_soc_update_bits(codec, reg2, 0x100, 0x100);
 233
 234         return 0;
 235 }
 236
 237 #define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, \
 238                                     xinvert, tlv_array)                 \
 239 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 240         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 241                 SNDRV_CTL_ELEM_ACCESS_READWRITE,  \
 242         .tlv.p = (tlv_array), \
 243         .info = snd_soc_info_volsw_2r, \
 244         .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
 245         .private_value = (unsigned long)&(struct soc_mixer_control) \
 246                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 247                 .max = xmax, .invert = xinvert} }
 248
 249 static const struct snd_kcontrol_new wm8580_snd_controls[] = {
 250 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
 251                             WM8580_DIGITAL_ATTENUATION_DACL1,
 252                             WM8580_DIGITAL_ATTENUATION_DACR1,
 253                             0, 0xff, 0, dac_tlv),
 254 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
 255                             WM8580_DIGITAL_ATTENUATION_DACL2,
 256                             WM8580_DIGITAL_ATTENUATION_DACR2,
 257                             0, 0xff, 0, dac_tlv),
 258 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
 259                             WM8580_DIGITAL_ATTENUATION_DACL3,
 260                             WM8580_DIGITAL_ATTENUATION_DACR3,
 261                             0, 0xff, 0, dac_tlv),
 262
 263 SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
 264 SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
 265 SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
 266
 267 SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4,  0, 1, 1, 0),
 268 SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4,  2, 3, 1, 0),
 269 SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4,  4, 5, 1, 0),
 270
 271 SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
 272 SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0),
 273 SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0),
 274 SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0),
 275
 276 SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0),
 277 SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
 278 };
 279
 280 static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
 281 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
 282 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
 283 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
 284
 285 SND_SOC_DAPM_OUTPUT("VOUT1L"),
 286 SND_SOC_DAPM_OUTPUT("VOUT1R"),
 287 SND_SOC_DAPM_OUTPUT("VOUT2L"),
 288 SND_SOC_DAPM_OUTPUT("VOUT2R"),
 289 SND_SOC_DAPM_OUTPUT("VOUT3L"),
 290 SND_SOC_DAPM_OUTPUT("VOUT3R"),
 291
 292 SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
 293
 294 SND_SOC_DAPM_INPUT("AINL"),
 295 SND_SOC_DAPM_INPUT("AINR"),
 296 };
 297
 298 static const struct snd_soc_dapm_route audio_map[] = {
 299         { "VOUT1L", NULL, "DAC1" },
 300         { "VOUT1R", NULL, "DAC1" },
 301
 302         { "VOUT2L", NULL, "DAC2" },
 303         { "VOUT2R", NULL, "DAC2" },
 304
 305         { "VOUT3L", NULL, "DAC3" },
 306         { "VOUT3R", NULL, "DAC3" },
 307
 308         { "ADC", NULL, "AINL" },
 309         { "ADC", NULL, "AINR" },
 310 };
 311
 312 static int wm8580_add_widgets(struct snd_soc_codec *codec)
 313 {
 314         snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets,
 315                                   ARRAY_SIZE(wm8580_dapm_widgets));
 316
 317         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 318
 319         return 0;
 320 }
 321
 322 /* PLL divisors */
 323 struct _pll_div {
 324         u32 prescale:1;
 325         u32 postscale:1;
 326         u32 freqmode:2;
 327         u32 n:4;
 328         u32 k:24;
 329 };
 330
 331 /* The size in bits of the pll divide */
 332 #define FIXED_PLL_SIZE (1 << 22)
 333
 334 /* PLL rate to output rate divisions */
 335 static struct {
 336         unsigned int div;
 337         unsigned int freqmode;
 338         unsigned int postscale;
 339 } post_table[] = {
 340         {  2,  0, 0 },
 341         {  4,  0, 1 },
 342         {  4,  1, 0 },
 343         {  8,  1, 1 },
 344         {  8,  2, 0 },
 345         { 16,  2, 1 },
 346         { 12,  3, 0 },
 347         { 24,  3, 1 }
 348 };
 349
 350 static int pll_factors(struct _pll_div *pll_div, unsigned int target,
 351                        unsigned int source)
 352 {
 353         u64 Kpart;
 354         unsigned int K, Ndiv, Nmod;
 355         int i;
 356
 357         pr_debug("wm8580: PLL %uHz->%uHz\n", source, target);
 358
 359         /* Scale the output frequency up; the PLL should run in the
 360          * region of 90-100MHz.
 361          */
 362         for (i = 0; i < ARRAY_SIZE(post_table); i++) {
 363                 if (target * post_table[i].div >=  90000000 &&
 364                     target * post_table[i].div <= 100000000) {
 365                         pll_div->freqmode = post_table[i].freqmode;
 366                         pll_div->postscale = post_table[i].postscale;
 367                         target *= post_table[i].div;
 368                         break;
 369                 }
 370         }
 371
 372         if (i == ARRAY_SIZE(post_table)) {
 373                 printk(KERN_ERR "wm8580: Unable to scale output frequency "
 374                        "%u\n", target);
 375                 return -EINVAL;
 376         }
 377
 378         Ndiv = target / source;
 379
 380         if (Ndiv < 5) {
 381                 source /= 2;
 382                 pll_div->prescale = 1;
 383                 Ndiv = target / source;
 384         } else
 385                 pll_div->prescale = 0;
 386
 387         if ((Ndiv < 5) || (Ndiv > 13)) {
 388                 printk(KERN_ERR
 389                         "WM8580 N=%u outside supported range\n", Ndiv);
 390                 return -EINVAL;
 391         }
 392
 393         pll_div->n = Ndiv;
 394         Nmod = target % source;
 395         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 396
 397         do_div(Kpart, source);
 398
 399         K = Kpart & 0xFFFFFFFF;
 400
 401         pll_div->k = K;
 402
 403         pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
 404                  pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
 405                  pll_div->postscale);
 406
 407         return 0;
 408 }
 409
 410 static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 411                 int source, unsigned int freq_in, unsigned int freq_out)
 412 {
 413         int offset;
 414         struct snd_soc_codec *codec = codec_dai->codec;
 415         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 416         struct pll_state *state;
 417         struct _pll_div pll_div;
 418         unsigned int reg;
 419         unsigned int pwr_mask;
 420         int ret;
 421
 422         /* GCC isn't able to work out the ifs below for initialising/using
 423          * pll_div so suppress warnings.
 424          */
 425         memset(&pll_div, 0, sizeof(pll_div));
 426
 427         switch (pll_id) {
 428         case WM8580_PLLA:
 429                 state = &wm8580->a;
 430                 offset = 0;
 431                 pwr_mask = WM8580_PWRDN2_PLLAPD;
 432                 break;
 433         case WM8580_PLLB:
 434                 state = &wm8580->b;
 435                 offset = 4;
 436                 pwr_mask = WM8580_PWRDN2_PLLBPD;
 437                 break;
 438         default:
 439                 return -ENODEV;
 440         }
 441
 442         if (freq_in && freq_out) {
 443                 ret = pll_factors(&pll_div, freq_out, freq_in);
 444                 if (ret != 0)
 445                         return ret;
 446         }
 447
 448         state->in = freq_in;
 449         state->out = freq_out;
 450
 451         /* Always disable the PLL - it is not safe to leave it running
 452          * while reprogramming it.
 453          */
 454         reg = snd_soc_read(codec, WM8580_PWRDN2);
 455         snd_soc_write(codec, WM8580_PWRDN2, reg | pwr_mask);
 456
 457         if (!freq_in || !freq_out)
 458                 return 0;
 459
 460         snd_soc_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
 461         snd_soc_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0x1ff);
 462         snd_soc_write(codec, WM8580_PLLA3 + offset,
 463                      (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
 464
 465         reg = snd_soc_read(codec, WM8580_PLLA4 + offset);
 466         reg &= ~0x1b;
 467         reg |= pll_div.prescale | pll_div.postscale << 1 |
 468                 pll_div.freqmode << 3;
 469
 470         snd_soc_write(codec, WM8580_PLLA4 + offset, reg);
 471
 472         /* All done, turn it on */
 473         reg = snd_soc_read(codec, WM8580_PWRDN2);
 474         snd_soc_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
 475
 476         return 0;
 477 }
 478
 479 /*
 480  * Set PCM DAI bit size and sample rate.
 481  */
 482 static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
 483                                  struct snd_pcm_hw_params *params,
 484                                  struct snd_soc_dai *dai)
 485 {
 486         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 487         struct snd_soc_codec *codec = rtd->codec;
 488         u16 paifb = snd_soc_read(codec, WM8580_PAIF3 + dai->driver->id);
 489
 490         paifb &= ~WM8580_AIF_LENGTH_MASK;
 491         /* bit size */
 492         switch (params_format(params)) {
 493         case SNDRV_PCM_FORMAT_S16_LE:
 494                 break;
 495         case SNDRV_PCM_FORMAT_S20_3LE:
 496                 paifb |= WM8580_AIF_LENGTH_20;
 497                 break;
 498         case SNDRV_PCM_FORMAT_S24_LE:
 499                 paifb |= WM8580_AIF_LENGTH_24;
 500                 break;
 501         case SNDRV_PCM_FORMAT_S32_LE:
 502                 paifb |= WM8580_AIF_LENGTH_24;
 503                 break;
 504         default:
 505                 return -EINVAL;
 506         }
 507
 508         snd_soc_write(codec, WM8580_PAIF3 + dai->driver->id, paifb);
 509         return 0;
 510 }
 511
 512 static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
 513                                       unsigned int fmt)
 514 {
 515         struct snd_soc_codec *codec = codec_dai->codec;
 516         unsigned int aifa;
 517         unsigned int aifb;
 518         int can_invert_lrclk;
 519
 520         aifa = snd_soc_read(codec, WM8580_PAIF1 + codec_dai->driver->id);
 521         aifb = snd_soc_read(codec, WM8580_PAIF3 + codec_dai->driver->id);
 522
 523         aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
 524
 525         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 526         case SND_SOC_DAIFMT_CBS_CFS:
 527                 aifa &= ~WM8580_AIF_MS;
 528                 break;
 529         case SND_SOC_DAIFMT_CBM_CFM:
 530                 aifa |= WM8580_AIF_MS;
 531                 break;
 532         default:
 533                 return -EINVAL;
 534         }
 535
 536         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 537         case SND_SOC_DAIFMT_I2S:
 538                 can_invert_lrclk = 1;
 539                 aifb |= WM8580_AIF_FMT_I2S;
 540                 break;
 541         case SND_SOC_DAIFMT_RIGHT_J:
 542                 can_invert_lrclk = 1;
 543                 aifb |= WM8580_AIF_FMT_RIGHTJ;
 544                 break;
 545         case SND_SOC_DAIFMT_LEFT_J:
 546                 can_invert_lrclk = 1;
 547                 aifb |= WM8580_AIF_FMT_LEFTJ;
 548                 break;
 549         case SND_SOC_DAIFMT_DSP_A:
 550                 can_invert_lrclk = 0;
 551                 aifb |= WM8580_AIF_FMT_DSP;
 552                 break;
 553         case SND_SOC_DAIFMT_DSP_B:
 554                 can_invert_lrclk = 0;
 555                 aifb |= WM8580_AIF_FMT_DSP;
 556                 aifb |= WM8580_AIF_LRP;
 557                 break;
 558         default:
 559                 return -EINVAL;
 560         }
 561
 562         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 563         case SND_SOC_DAIFMT_NB_NF:
 564                 break;
 565
 566         case SND_SOC_DAIFMT_IB_IF:
 567                 if (!can_invert_lrclk)
 568                         return -EINVAL;
 569                 aifb |= WM8580_AIF_BCP;
 570                 aifb |= WM8580_AIF_LRP;
 571                 break;
 572
 573         case SND_SOC_DAIFMT_IB_NF:
 574                 aifb |= WM8580_AIF_BCP;
 575                 break;
 576
 577         case SND_SOC_DAIFMT_NB_IF:
 578                 if (!can_invert_lrclk)
 579                         return -EINVAL;
 580                 aifb |= WM8580_AIF_LRP;
 581                 break;
 582
 583         default:
 584                 return -EINVAL;
 585         }
 586
 587         snd_soc_write(codec, WM8580_PAIF1 + codec_dai->driver->id, aifa);
 588         snd_soc_write(codec, WM8580_PAIF3 + codec_dai->driver->id, aifb);
 589
 590         return 0;
 591 }
 592
 593 static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 594                                  int div_id, int div)
 595 {
 596         struct snd_soc_codec *codec = codec_dai->codec;
 597         unsigned int reg;
 598
 599         switch (div_id) {
 600         case WM8580_MCLK:
 601                 reg = snd_soc_read(codec, WM8580_PLLB4);
 602                 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
 603
 604                 switch (div) {
 605                 case WM8580_CLKSRC_MCLK:
 606                         /* Input */
 607                         break;
 608
 609                 case WM8580_CLKSRC_PLLA:
 610                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
 611                         break;
 612                 case WM8580_CLKSRC_PLLB:
 613                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
 614                         break;
 615
 616                 case WM8580_CLKSRC_OSC:
 617                         reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
 618                         break;
 619
 620                 default:
 621                         return -EINVAL;
 622                 }
 623                 snd_soc_write(codec, WM8580_PLLB4, reg);
 624                 break;
 625
 626         case WM8580_DAC_CLKSEL:
 627                 reg = snd_soc_read(codec, WM8580_CLKSEL);
 628                 reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK;
 629
 630                 switch (div) {
 631                 case WM8580_CLKSRC_MCLK:
 632                         break;
 633
 634                 case WM8580_CLKSRC_PLLA:
 635                         reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA;
 636                         break;
 637
 638                 case WM8580_CLKSRC_PLLB:
 639                         reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB;
 640                         break;
 641
 642                 default:
 643                         return -EINVAL;
 644                 }
 645                 snd_soc_write(codec, WM8580_CLKSEL, reg);
 646                 break;
 647
 648         case WM8580_CLKOUTSRC:
 649                 reg = snd_soc_read(codec, WM8580_PLLB4);
 650                 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
 651
 652                 switch (div) {
 653                 case WM8580_CLKSRC_NONE:
 654                         break;
 655
 656                 case WM8580_CLKSRC_PLLA:
 657                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
 658                         break;
 659
 660                 case WM8580_CLKSRC_PLLB:
 661                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
 662                         break;
 663
 664                 case WM8580_CLKSRC_OSC:
 665                         reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
 666                         break;
 667
 668                 default:
 669                         return -EINVAL;
 670                 }
 671                 snd_soc_write(codec, WM8580_PLLB4, reg);
 672                 break;
 673
 674         default:
 675                 return -EINVAL;
 676         }
 677
 678         return 0;
 679 }
 680
 681 static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
 682 {
 683         struct snd_soc_codec *codec = codec_dai->codec;
 684         unsigned int reg;
 685
 686         reg = snd_soc_read(codec, WM8580_DAC_CONTROL5);
 687
 688         if (mute)
 689                 reg |= WM8580_DAC_CONTROL5_MUTEALL;
 690         else
 691                 reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
 692
 693         snd_soc_write(codec, WM8580_DAC_CONTROL5, reg);
 694
 695         return 0;
 696 }
 697
 698 static int wm8580_set_bias_level(struct snd_soc_codec *codec,
 699         enum snd_soc_bias_level level)
 700 {
 701         u16 reg;
 702         switch (level) {
 703         case SND_SOC_BIAS_ON:
 704         case SND_SOC_BIAS_PREPARE:
 705                 break;
 706
 707         case SND_SOC_BIAS_STANDBY:
 708                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 709                         /* Power up and get individual control of the DACs */
 710                         reg = snd_soc_read(codec, WM8580_PWRDN1);
 711                         reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
 712                         snd_soc_write(codec, WM8580_PWRDN1, reg);
 713
 714                         /* Make VMID high impedence */
 715                         reg = snd_soc_read(codec,  WM8580_ADC_CONTROL1);
 716                         reg &= ~0x100;
 717                         snd_soc_write(codec, WM8580_ADC_CONTROL1, reg);
 718                 }
 719                 break;
 720
 721         case SND_SOC_BIAS_OFF:
 722                 reg = snd_soc_read(codec, WM8580_PWRDN1);
 723                 snd_soc_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
 724                 break;
 725         }
 726         codec->bias_level = level;
 727         return 0;
 728 }
 729
 730 #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 731                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 732
 733 static struct snd_soc_dai_ops wm8580_dai_ops_playback = {
 734         .hw_params      = wm8580_paif_hw_params,
 735         .set_fmt        = wm8580_set_paif_dai_fmt,
 736         .set_clkdiv     = wm8580_set_dai_clkdiv,
 737         .set_pll        = wm8580_set_dai_pll,
 738         .digital_mute   = wm8580_digital_mute,
 739 };
 740
 741 static struct snd_soc_dai_ops wm8580_dai_ops_capture = {
 742         .hw_params      = wm8580_paif_hw_params,
 743         .set_fmt        = wm8580_set_paif_dai_fmt,
 744         .set_clkdiv     = wm8580_set_dai_clkdiv,
 745         .set_pll        = wm8580_set_dai_pll,
 746 };
 747
 748 static struct snd_soc_dai_driver wm8580_dai[] = {
 749         {
 750                 .name = "wm8580-hifi-playback",
 751                 .id     = WM8580_DAI_PAIFRX,
 752                 .playback = {
 753                         .stream_name = "Playback",
 754                         .channels_min = 1,
 755                         .channels_max = 6,
 756                         .rates = SNDRV_PCM_RATE_8000_192000,
 757                         .formats = WM8580_FORMATS,
 758                 },
 759                 .ops = &wm8580_dai_ops_playback,
 760         },
 761         {
 762                 .name = "wm8580-hifi-capture",
 763                 .id     =       WM8580_DAI_PAIFTX,
 764                 .capture = {
 765                         .stream_name = "Capture",
 766                         .channels_min = 2,
 767                         .channels_max = 2,
 768                         .rates = SNDRV_PCM_RATE_8000_192000,
 769                         .formats = WM8580_FORMATS,
 770                 },
 771                 .ops = &wm8580_dai_ops_capture,
 772         },
 773 };
 774
 775 static int wm8580_probe(struct snd_soc_codec *codec)
 776 {
 777         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 778         int ret = 0,i;
 779
 780         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8580->control_type);
 781         if (ret < 0) {
 782                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 783                 return ret;
 784         }
 785
 786         for (i = 0; i < ARRAY_SIZE(wm8580->supplies); i++)
 787                 wm8580->supplies[i].supply = wm8580_supply_names[i];
 788
 789         ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8580->supplies),
 790                                  wm8580->supplies);
 791         if (ret != 0) {
 792                 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
 793                 return ret;
 794         }
 795
 796         ret = regulator_bulk_enable(ARRAY_SIZE(wm8580->supplies),
 797                                     wm8580->supplies);
 798         if (ret != 0) {
 799                 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
 800                 goto err_regulator_get;
 801         }
 802
 803         /* Get the codec into a known state */
 804         ret = snd_soc_write(codec, WM8580_RESET, 0);
 805         if (ret != 0) {
 806                 dev_err(codec->dev, "Failed to reset codec: %d\n", ret);
 807                 goto err_regulator_enable;
 808         }
 809
 810         wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 811
 812         snd_soc_add_controls(codec, wm8580_snd_controls,
 813                              ARRAY_SIZE(wm8580_snd_controls));
 814         wm8580_add_widgets(codec);
 815
 816         return 0;
 817
 818 err_regulator_enable:
 819         regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 820 err_regulator_get:
 821         regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 822         return ret;
 823 }
 824
 825 /* power down chip */
 826 static int wm8580_remove(struct snd_soc_codec *codec)
 827 {
 828         struct wm8580_priv *wm8580 = snd_soc_codec_get_drvdata(codec);
 829
 830         wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
 831
 832         regulator_bulk_disable(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 833         regulator_bulk_free(ARRAY_SIZE(wm8580->supplies), wm8580->supplies);
 834
 835         return 0;
 836 }
 837
 838 static struct snd_soc_codec_driver soc_codec_dev_wm8580 = {
 839         .probe =        wm8580_probe,
 840         .remove =       wm8580_remove,
 841         .set_bias_level = wm8580_set_bias_level,
 842         .reg_cache_size = sizeof(wm8580_reg),
 843         .reg_word_size = sizeof(u16),
 844         .reg_cache_default = &wm8580_reg,
 845 };
 846
 847 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 848 static int wm8580_i2c_probe(struct i2c_client *i2c,
 849                             const struct i2c_device_id *id)
 850 {
 851         struct wm8580_priv *wm8580;
 852         int ret;
 853
 854         wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
 855         if (wm8580 == NULL)
 856                 return -ENOMEM;
 857
 858         i2c_set_clientdata(i2c, wm8580);
 859         wm8580->control_type = SND_SOC_I2C;
 860
 861         ret =  snd_soc_register_codec(&i2c->dev,
 862                         &soc_codec_dev_wm8580, wm8580_dai, ARRAY_SIZE(wm8580_dai));
 863         if (ret < 0)
 864                 kfree(wm8580);
 865         return ret;
 866 }
 867
 868 static int wm8580_i2c_remove(struct i2c_client *client)
 869 {
 870         snd_soc_unregister_codec(&client->dev);
 871         kfree(i2c_get_clientdata(client));
 872         return 0;
 873 }
 874
 875 static const struct i2c_device_id wm8580_i2c_id[] = {
 876         { "wm8580", 0 },
 877         { }
 878 };
 879 MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
 880
 881 static struct i2c_driver wm8580_i2c_driver = {
 882         .driver = {
 883                 .name = "wm8580-codec",
 884                 .owner = THIS_MODULE,
 885         },
 886         .probe =    wm8580_i2c_probe,
 887         .remove =   wm8580_i2c_remove,
 888         .id_table = wm8580_i2c_id,
 889 };
 890 #endif
 891
 892 static int __init wm8580_modinit(void)
 893 {
 894         int ret = 0;
 895
 896 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 897         ret = i2c_add_driver(&wm8580_i2c_driver);
 898         if (ret != 0) {
 899                 pr_err("Failed to register WM8580 I2C driver: %d\n", ret);
 900         }
 901 #endif
 902
 903         return ret;
 904 }
 905 module_init(wm8580_modinit);
 906
 907 static void __exit wm8580_exit(void)
 908 {
 909 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 910         i2c_del_driver(&wm8580_i2c_driver);
 911 #endif
 912 }
 913 module_exit(wm8580_exit);
 914
 915 MODULE_DESCRIPTION("ASoC WM8580 driver");
 916 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 917 MODULE_LICENSE("GPL");