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   1 /*
   2  * wm8580.c  --  WM8580 ALSA Soc Audio driver
   3  *
   4  * Copyright 2008 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 <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/pcm_params.h>
  30 #include <sound/soc.h>
  31 #include <sound/soc-dapm.h>
  32 #include <sound/tlv.h>
  33 #include <sound/initval.h>
  34 #include <asm/div64.h>
  35
  36 #include "wm8580.h"
  37
  38 struct pll_state {
  39         unsigned int in;
  40         unsigned int out;
  41 };
  42
  43 /* codec private data */
  44 struct wm8580_priv {
  45         struct pll_state a;
  46         struct pll_state b;
  47 };
  48
  49 /* WM8580 register space */
  50 #define WM8580_PLLA1                         0x00
  51 #define WM8580_PLLA2                         0x01
  52 #define WM8580_PLLA3                         0x02
  53 #define WM8580_PLLA4                         0x03
  54 #define WM8580_PLLB1                         0x04
  55 #define WM8580_PLLB2                         0x05
  56 #define WM8580_PLLB3                         0x06
  57 #define WM8580_PLLB4                         0x07
  58 #define WM8580_CLKSEL                        0x08
  59 #define WM8580_PAIF1                         0x09
  60 #define WM8580_PAIF2                         0x0A
  61 #define WM8580_SAIF1                         0x0B
  62 #define WM8580_PAIF3                         0x0C
  63 #define WM8580_PAIF4                         0x0D
  64 #define WM8580_SAIF2                         0x0E
  65 #define WM8580_DAC_CONTROL1                  0x0F
  66 #define WM8580_DAC_CONTROL2                  0x10
  67 #define WM8580_DAC_CONTROL3                  0x11
  68 #define WM8580_DAC_CONTROL4                  0x12
  69 #define WM8580_DAC_CONTROL5                  0x13
  70 #define WM8580_DIGITAL_ATTENUATION_DACL1     0x14
  71 #define WM8580_DIGITAL_ATTENUATION_DACR1     0x15
  72 #define WM8580_DIGITAL_ATTENUATION_DACL2     0x16
  73 #define WM8580_DIGITAL_ATTENUATION_DACR2     0x17
  74 #define WM8580_DIGITAL_ATTENUATION_DACL3     0x18
  75 #define WM8580_DIGITAL_ATTENUATION_DACR3     0x19
  76 #define WM8580_MASTER_DIGITAL_ATTENUATION    0x1C
  77 #define WM8580_ADC_CONTROL1                  0x1D
  78 #define WM8580_SPDTXCHAN0                    0x1E
  79 #define WM8580_SPDTXCHAN1                    0x1F
  80 #define WM8580_SPDTXCHAN2                    0x20
  81 #define WM8580_SPDTXCHAN3                    0x21
  82 #define WM8580_SPDTXCHAN4                    0x22
  83 #define WM8580_SPDTXCHAN5                    0x23
  84 #define WM8580_SPDMODE                       0x24
  85 #define WM8580_INTMASK                       0x25
  86 #define WM8580_GPO1                          0x26
  87 #define WM8580_GPO2                          0x27
  88 #define WM8580_GPO3                          0x28
  89 #define WM8580_GPO4                          0x29
  90 #define WM8580_GPO5                          0x2A
  91 #define WM8580_INTSTAT                       0x2B
  92 #define WM8580_SPDRXCHAN1                    0x2C
  93 #define WM8580_SPDRXCHAN2                    0x2D
  94 #define WM8580_SPDRXCHAN3                    0x2E
  95 #define WM8580_SPDRXCHAN4                    0x2F
  96 #define WM8580_SPDRXCHAN5                    0x30
  97 #define WM8580_SPDSTAT                       0x31
  98 #define WM8580_PWRDN1                        0x32
  99 #define WM8580_PWRDN2                        0x33
 100 #define WM8580_READBACK                      0x34
 101 #define WM8580_RESET                         0x35
 102
 103 /* PLLB4 (register 7h) */
 104 #define WM8580_PLLB4_MCLKOUTSRC_MASK   0x60
 105 #define WM8580_PLLB4_MCLKOUTSRC_PLLA   0x20
 106 #define WM8580_PLLB4_MCLKOUTSRC_PLLB   0x40
 107 #define WM8580_PLLB4_MCLKOUTSRC_OSC    0x60
 108
 109 #define WM8580_PLLB4_CLKOUTSRC_MASK    0x180
 110 #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
 111 #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
 112 #define WM8580_PLLB4_CLKOUTSRC_OSCCLK  0x180
 113
 114 /* CLKSEL (register 8h) */
 115 #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
 116 #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
 117 #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
 118
 119 /* AIF control 1 (registers 9h-bh) */
 120 #define WM8580_AIF_RATE_MASK       0x7
 121 #define WM8580_AIF_RATE_128        0x0
 122 #define WM8580_AIF_RATE_192        0x1
 123 #define WM8580_AIF_RATE_256        0x2
 124 #define WM8580_AIF_RATE_384        0x3
 125 #define WM8580_AIF_RATE_512        0x4
 126 #define WM8580_AIF_RATE_768        0x5
 127 #define WM8580_AIF_RATE_1152       0x6
 128
 129 #define WM8580_AIF_BCLKSEL_MASK   0x18
 130 #define WM8580_AIF_BCLKSEL_64     0x00
 131 #define WM8580_AIF_BCLKSEL_128    0x08
 132 #define WM8580_AIF_BCLKSEL_256    0x10
 133 #define WM8580_AIF_BCLKSEL_SYSCLK 0x18
 134
 135 #define WM8580_AIF_MS             0x20
 136
 137 #define WM8580_AIF_CLKSRC_MASK    0xc0
 138 #define WM8580_AIF_CLKSRC_PLLA    0x40
 139 #define WM8580_AIF_CLKSRC_PLLB    0x40
 140 #define WM8580_AIF_CLKSRC_MCLK    0xc0
 141
 142 /* AIF control 2 (registers ch-eh) */
 143 #define WM8580_AIF_FMT_MASK    0x03
 144 #define WM8580_AIF_FMT_RIGHTJ  0x00
 145 #define WM8580_AIF_FMT_LEFTJ   0x01
 146 #define WM8580_AIF_FMT_I2S     0x02
 147 #define WM8580_AIF_FMT_DSP     0x03
 148
 149 #define WM8580_AIF_LENGTH_MASK   0x0c
 150 #define WM8580_AIF_LENGTH_16     0x00
 151 #define WM8580_AIF_LENGTH_20     0x04
 152 #define WM8580_AIF_LENGTH_24     0x08
 153 #define WM8580_AIF_LENGTH_32     0x0c
 154
 155 #define WM8580_AIF_LRP         0x10
 156 #define WM8580_AIF_BCP         0x20
 157
 158 /* Powerdown Register 1 (register 32h) */
 159 #define WM8580_PWRDN1_PWDN     0x001
 160 #define WM8580_PWRDN1_ALLDACPD 0x040
 161
 162 /* Powerdown Register 2 (register 33h) */
 163 #define WM8580_PWRDN2_OSSCPD   0x001
 164 #define WM8580_PWRDN2_PLLAPD   0x002
 165 #define WM8580_PWRDN2_PLLBPD   0x004
 166 #define WM8580_PWRDN2_SPDIFPD  0x008
 167 #define WM8580_PWRDN2_SPDIFTXD 0x010
 168 #define WM8580_PWRDN2_SPDIFRXD 0x020
 169
 170 #define WM8580_DAC_CONTROL5_MUTEALL 0x10
 171
 172 /*
 173  * wm8580 register cache
 174  * We can't read the WM8580 register space when we
 175  * are using 2 wire for device control, so we cache them instead.
 176  */
 177 static const u16 wm8580_reg[] = {
 178         0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
 179         0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
 180         0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
 181         0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
 182         0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
 183         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
 184         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
 185         0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
 186         0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
 187         0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
 188         0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
 189         0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
 190         0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
 191         0x0000, 0x0000 /*R53*/
 192 };
 193
 194 /*
 195  * read wm8580 register cache
 196  */
 197 static inline unsigned int wm8580_read_reg_cache(struct snd_soc_codec *codec,
 198         unsigned int reg)
 199 {
 200         u16 *cache = codec->reg_cache;
 201         BUG_ON(reg >= ARRAY_SIZE(wm8580_reg));
 202         return cache[reg];
 203 }
 204
 205 /*
 206  * write wm8580 register cache
 207  */
 208 static inline void wm8580_write_reg_cache(struct snd_soc_codec *codec,
 209         unsigned int reg, unsigned int value)
 210 {
 211         u16 *cache = codec->reg_cache;
 212
 213         cache[reg] = value;
 214 }
 215
 216 /*
 217  * write to the WM8580 register space
 218  */
 219 static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg,
 220         unsigned int value)
 221 {
 222         u8 data[2];
 223
 224         BUG_ON(reg >= ARRAY_SIZE(wm8580_reg));
 225
 226         /* Registers are 9 bits wide */
 227         value &= 0x1ff;
 228
 229         switch (reg) {
 230         case WM8580_RESET:
 231                 /* Uncached */
 232                 break;
 233         default:
 234                 if (value == wm8580_read_reg_cache(codec, reg))
 235                         return 0;
 236         }
 237
 238         /* data is
 239          *   D15..D9 WM8580 register offset
 240          *   D8...D0 register data
 241          */
 242         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
 243         data[1] = value & 0x00ff;
 244
 245         wm8580_write_reg_cache(codec, reg, value);
 246         if (codec->hw_write(codec->control_data, data, 2) == 2)
 247                 return 0;
 248         else
 249                 return -EIO;
 250 }
 251
 252 static inline unsigned int wm8580_read(struct snd_soc_codec *codec,
 253                                        unsigned int reg)
 254 {
 255         switch (reg) {
 256         default:
 257                 return wm8580_read_reg_cache(codec, reg);
 258         }
 259 }
 260
 261 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
 262
 263 static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
 264                          struct snd_ctl_elem_value *ucontrol)
 265 {
 266         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 267         int reg = kcontrol->private_value & 0xff;
 268         int reg2 = (kcontrol->private_value >> 24) & 0xff;
 269         int ret;
 270         u16 val;
 271
 272         /* Clear the register cache so we write without VU set */
 273         wm8580_write_reg_cache(codec, reg, 0);
 274         wm8580_write_reg_cache(codec, reg2, 0);
 275
 276         ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
 277         if (ret < 0)
 278                 return ret;
 279
 280         /* Now write again with the volume update bit set */
 281         val = wm8580_read_reg_cache(codec, reg);
 282         wm8580_write(codec, reg, val | 0x0100);
 283
 284         val = wm8580_read_reg_cache(codec, reg2);
 285         wm8580_write(codec, reg2, val | 0x0100);
 286
 287         return 0;
 288 }
 289
 290 #define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \
 291 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 292         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 293                 SNDRV_CTL_ELEM_ACCESS_READWRITE,  \
 294         .tlv.p = (tlv_array), \
 295         .info = snd_soc_info_volsw_2r, \
 296         .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
 297         .private_value = (reg_left) | ((shift) << 8)  |         \
 298                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
 299
 300 static const struct snd_kcontrol_new wm8580_snd_controls[] = {
 301 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
 302                             WM8580_DIGITAL_ATTENUATION_DACL1,
 303                             WM8580_DIGITAL_ATTENUATION_DACR1,
 304                             0, 0xff, 0, dac_tlv),
 305 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
 306                             WM8580_DIGITAL_ATTENUATION_DACL2,
 307                             WM8580_DIGITAL_ATTENUATION_DACR2,
 308                             0, 0xff, 0, dac_tlv),
 309 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
 310                             WM8580_DIGITAL_ATTENUATION_DACL3,
 311                             WM8580_DIGITAL_ATTENUATION_DACR3,
 312                             0, 0xff, 0, dac_tlv),
 313
 314 SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
 315 SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
 316 SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
 317
 318 SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4,  0, 1, 1, 0),
 319 SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4,  2, 3, 1, 0),
 320 SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4,  4, 5, 1, 0),
 321
 322 SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
 323 SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0),
 324 SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0),
 325 SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0),
 326
 327 SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0),
 328 SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
 329 };
 330
 331 static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
 332 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
 333 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
 334 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
 335
 336 SND_SOC_DAPM_OUTPUT("VOUT1L"),
 337 SND_SOC_DAPM_OUTPUT("VOUT1R"),
 338 SND_SOC_DAPM_OUTPUT("VOUT2L"),
 339 SND_SOC_DAPM_OUTPUT("VOUT2R"),
 340 SND_SOC_DAPM_OUTPUT("VOUT3L"),
 341 SND_SOC_DAPM_OUTPUT("VOUT3R"),
 342
 343 SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
 344
 345 SND_SOC_DAPM_INPUT("AINL"),
 346 SND_SOC_DAPM_INPUT("AINR"),
 347 };
 348
 349 static const struct snd_soc_dapm_route audio_map[] = {
 350         { "VOUT1L", NULL, "DAC1" },
 351         { "VOUT1R", NULL, "DAC1" },
 352
 353         { "VOUT2L", NULL, "DAC2" },
 354         { "VOUT2R", NULL, "DAC2" },
 355
 356         { "VOUT3L", NULL, "DAC3" },
 357         { "VOUT3R", NULL, "DAC3" },
 358
 359         { "ADC", NULL, "AINL" },
 360         { "ADC", NULL, "AINR" },
 361 };
 362
 363 static int wm8580_add_widgets(struct snd_soc_codec *codec)
 364 {
 365         snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets,
 366                                   ARRAY_SIZE(wm8580_dapm_widgets));
 367
 368         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 369
 370         snd_soc_dapm_new_widgets(codec);
 371         return 0;
 372 }
 373
 374 /* PLL divisors */
 375 struct _pll_div {
 376         u32 prescale:1;
 377         u32 postscale:1;
 378         u32 freqmode:2;
 379         u32 n:4;
 380         u32 k:24;
 381 };
 382
 383 /* The size in bits of the pll divide */
 384 #define FIXED_PLL_SIZE (1 << 22)
 385
 386 /* PLL rate to output rate divisions */
 387 static struct {
 388         unsigned int div;
 389         unsigned int freqmode;
 390         unsigned int postscale;
 391 } post_table[] = {
 392         {  2,  0, 0 },
 393         {  4,  0, 1 },
 394         {  4,  1, 0 },
 395         {  8,  1, 1 },
 396         {  8,  2, 0 },
 397         { 16,  2, 1 },
 398         { 12,  3, 0 },
 399         { 24,  3, 1 }
 400 };
 401
 402 static int pll_factors(struct _pll_div *pll_div, unsigned int target,
 403                        unsigned int source)
 404 {
 405         u64 Kpart;
 406         unsigned int K, Ndiv, Nmod;
 407         int i;
 408
 409         pr_debug("wm8580: PLL %dHz->%dHz\n", source, target);
 410
 411         /* Scale the output frequency up; the PLL should run in the
 412          * region of 90-100MHz.
 413          */
 414         for (i = 0; i < ARRAY_SIZE(post_table); i++) {
 415                 if (target * post_table[i].div >=  90000000 &&
 416                     target * post_table[i].div <= 100000000) {
 417                         pll_div->freqmode = post_table[i].freqmode;
 418                         pll_div->postscale = post_table[i].postscale;
 419                         target *= post_table[i].div;
 420                         break;
 421                 }
 422         }
 423
 424         if (i == ARRAY_SIZE(post_table)) {
 425                 printk(KERN_ERR "wm8580: Unable to scale output frequency "
 426                        "%u\n", target);
 427                 return -EINVAL;
 428         }
 429
 430         Ndiv = target / source;
 431
 432         if (Ndiv < 5) {
 433                 source /= 2;
 434                 pll_div->prescale = 1;
 435                 Ndiv = target / source;
 436         } else
 437                 pll_div->prescale = 0;
 438
 439         if ((Ndiv < 5) || (Ndiv > 13)) {
 440                 printk(KERN_ERR
 441                         "WM8580 N=%d outside supported range\n", Ndiv);
 442                 return -EINVAL;
 443         }
 444
 445         pll_div->n = Ndiv;
 446         Nmod = target % source;
 447         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 448
 449         do_div(Kpart, source);
 450
 451         K = Kpart & 0xFFFFFFFF;
 452
 453         pll_div->k = K;
 454
 455         pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
 456                  pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
 457                  pll_div->postscale);
 458
 459         return 0;
 460 }
 461
 462 static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai,
 463                 int pll_id, unsigned int freq_in, unsigned int freq_out)
 464 {
 465         int offset;
 466         struct snd_soc_codec *codec = codec_dai->codec;
 467         struct wm8580_priv *wm8580 = codec->private_data;
 468         struct pll_state *state;
 469         struct _pll_div pll_div;
 470         unsigned int reg;
 471         unsigned int pwr_mask;
 472         int ret;
 473
 474         /* GCC isn't able to work out the ifs below for initialising/using
 475          * pll_div so suppress warnings.
 476          */
 477         memset(&pll_div, 0, sizeof(pll_div));
 478
 479         switch (pll_id) {
 480         case WM8580_PLLA:
 481                 state = &wm8580->a;
 482                 offset = 0;
 483                 pwr_mask = WM8580_PWRDN2_PLLAPD;
 484                 break;
 485         case WM8580_PLLB:
 486                 state = &wm8580->b;
 487                 offset = 4;
 488                 pwr_mask = WM8580_PWRDN2_PLLBPD;
 489                 break;
 490         default:
 491                 return -ENODEV;
 492         }
 493
 494         if (freq_in && freq_out) {
 495                 ret = pll_factors(&pll_div, freq_out, freq_in);
 496                 if (ret != 0)
 497                         return ret;
 498         }
 499
 500         state->in = freq_in;
 501         state->out = freq_out;
 502
 503         /* Always disable the PLL - it is not safe to leave it running
 504          * while reprogramming it.
 505          */
 506         reg = wm8580_read(codec, WM8580_PWRDN2);
 507         wm8580_write(codec, WM8580_PWRDN2, reg | pwr_mask);
 508
 509         if (!freq_in || !freq_out)
 510                 return 0;
 511
 512         wm8580_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
 513         wm8580_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0xff);
 514         wm8580_write(codec, WM8580_PLLA3 + offset,
 515                      (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
 516
 517         reg = wm8580_read(codec, WM8580_PLLA4 + offset);
 518         reg &= ~0x3f;
 519         reg |= pll_div.prescale | pll_div.postscale << 1 |
 520                 pll_div.freqmode << 4;
 521
 522         wm8580_write(codec, WM8580_PLLA4 + offset, reg);
 523
 524         /* All done, turn it on */
 525         reg = wm8580_read(codec, WM8580_PWRDN2);
 526         wm8580_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
 527
 528         return 0;
 529 }
 530
 531 /*
 532  * Set PCM DAI bit size and sample rate.
 533  */
 534 static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
 535                                  struct snd_pcm_hw_params *params,
 536                                  struct snd_soc_dai *dai)
 537 {
 538         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 539         struct snd_soc_device *socdev = rtd->socdev;
 540         struct snd_soc_codec *codec = socdev->card->codec;
 541         u16 paifb = wm8580_read(codec, WM8580_PAIF3 + dai->id);
 542
 543         paifb &= ~WM8580_AIF_LENGTH_MASK;
 544         /* bit size */
 545         switch (params_format(params)) {
 546         case SNDRV_PCM_FORMAT_S16_LE:
 547                 break;
 548         case SNDRV_PCM_FORMAT_S20_3LE:
 549                 paifb |= WM8580_AIF_LENGTH_20;
 550                 break;
 551         case SNDRV_PCM_FORMAT_S24_LE:
 552                 paifb |= WM8580_AIF_LENGTH_24;
 553                 break;
 554         case SNDRV_PCM_FORMAT_S32_LE:
 555                 paifb |= WM8580_AIF_LENGTH_24;
 556                 break;
 557         default:
 558                 return -EINVAL;
 559         }
 560
 561         wm8580_write(codec, WM8580_PAIF3 + dai->id, paifb);
 562         return 0;
 563 }
 564
 565 static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
 566                                       unsigned int fmt)
 567 {
 568         struct snd_soc_codec *codec = codec_dai->codec;
 569         unsigned int aifa;
 570         unsigned int aifb;
 571         int can_invert_lrclk;
 572
 573         aifa = wm8580_read(codec, WM8580_PAIF1 + codec_dai->id);
 574         aifb = wm8580_read(codec, WM8580_PAIF3 + codec_dai->id);
 575
 576         aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
 577
 578         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 579         case SND_SOC_DAIFMT_CBS_CFS:
 580                 aifa &= ~WM8580_AIF_MS;
 581                 break;
 582         case SND_SOC_DAIFMT_CBM_CFM:
 583                 aifa |= WM8580_AIF_MS;
 584                 break;
 585         default:
 586                 return -EINVAL;
 587         }
 588
 589         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 590         case SND_SOC_DAIFMT_I2S:
 591                 can_invert_lrclk = 1;
 592                 aifb |= WM8580_AIF_FMT_I2S;
 593                 break;
 594         case SND_SOC_DAIFMT_RIGHT_J:
 595                 can_invert_lrclk = 1;
 596                 aifb |= WM8580_AIF_FMT_RIGHTJ;
 597                 break;
 598         case SND_SOC_DAIFMT_LEFT_J:
 599                 can_invert_lrclk = 1;
 600                 aifb |= WM8580_AIF_FMT_LEFTJ;
 601                 break;
 602         case SND_SOC_DAIFMT_DSP_A:
 603                 can_invert_lrclk = 0;
 604                 aifb |= WM8580_AIF_FMT_DSP;
 605                 break;
 606         case SND_SOC_DAIFMT_DSP_B:
 607                 can_invert_lrclk = 0;
 608                 aifb |= WM8580_AIF_FMT_DSP;
 609                 aifb |= WM8580_AIF_LRP;
 610                 break;
 611         default:
 612                 return -EINVAL;
 613         }
 614
 615         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 616         case SND_SOC_DAIFMT_NB_NF:
 617                 break;
 618
 619         case SND_SOC_DAIFMT_IB_IF:
 620                 if (!can_invert_lrclk)
 621                         return -EINVAL;
 622                 aifb |= WM8580_AIF_BCP;
 623                 aifb |= WM8580_AIF_LRP;
 624                 break;
 625
 626         case SND_SOC_DAIFMT_IB_NF:
 627                 aifb |= WM8580_AIF_BCP;
 628                 break;
 629
 630         case SND_SOC_DAIFMT_NB_IF:
 631                 if (!can_invert_lrclk)
 632                         return -EINVAL;
 633                 aifb |= WM8580_AIF_LRP;
 634                 break;
 635
 636         default:
 637                 return -EINVAL;
 638         }
 639
 640         wm8580_write(codec, WM8580_PAIF1 + codec_dai->id, aifa);
 641         wm8580_write(codec, WM8580_PAIF3 + codec_dai->id, aifb);
 642
 643         return 0;
 644 }
 645
 646 static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 647                                  int div_id, int div)
 648 {
 649         struct snd_soc_codec *codec = codec_dai->codec;
 650         unsigned int reg;
 651
 652         switch (div_id) {
 653         case WM8580_MCLK:
 654                 reg = wm8580_read(codec, WM8580_PLLB4);
 655                 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
 656
 657                 switch (div) {
 658                 case WM8580_CLKSRC_MCLK:
 659                         /* Input */
 660                         break;
 661
 662                 case WM8580_CLKSRC_PLLA:
 663                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
 664                         break;
 665                 case WM8580_CLKSRC_PLLB:
 666                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
 667                         break;
 668
 669                 case WM8580_CLKSRC_OSC:
 670                         reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
 671                         break;
 672
 673                 default:
 674                         return -EINVAL;
 675                 }
 676                 wm8580_write(codec, WM8580_PLLB4, reg);
 677                 break;
 678
 679         case WM8580_DAC_CLKSEL:
 680                 reg = wm8580_read(codec, WM8580_CLKSEL);
 681                 reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK;
 682
 683                 switch (div) {
 684                 case WM8580_CLKSRC_MCLK:
 685                         break;
 686
 687                 case WM8580_CLKSRC_PLLA:
 688                         reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA;
 689                         break;
 690
 691                 case WM8580_CLKSRC_PLLB:
 692                         reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB;
 693                         break;
 694
 695                 default:
 696                         return -EINVAL;
 697                 }
 698                 wm8580_write(codec, WM8580_CLKSEL, reg);
 699                 break;
 700
 701         case WM8580_CLKOUTSRC:
 702                 reg = wm8580_read(codec, WM8580_PLLB4);
 703                 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
 704
 705                 switch (div) {
 706                 case WM8580_CLKSRC_NONE:
 707                         break;
 708
 709                 case WM8580_CLKSRC_PLLA:
 710                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
 711                         break;
 712
 713                 case WM8580_CLKSRC_PLLB:
 714                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
 715                         break;
 716
 717                 case WM8580_CLKSRC_OSC:
 718                         reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
 719                         break;
 720
 721                 default:
 722                         return -EINVAL;
 723                 }
 724                 wm8580_write(codec, WM8580_PLLB4, reg);
 725                 break;
 726
 727         default:
 728                 return -EINVAL;
 729         }
 730
 731         return 0;
 732 }
 733
 734 static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
 735 {
 736         struct snd_soc_codec *codec = codec_dai->codec;
 737         unsigned int reg;
 738
 739         reg = wm8580_read(codec, WM8580_DAC_CONTROL5);
 740
 741         if (mute)
 742                 reg |= WM8580_DAC_CONTROL5_MUTEALL;
 743         else
 744                 reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
 745
 746         wm8580_write(codec, WM8580_DAC_CONTROL5, reg);
 747
 748         return 0;
 749 }
 750
 751 static int wm8580_set_bias_level(struct snd_soc_codec *codec,
 752         enum snd_soc_bias_level level)
 753 {
 754         u16 reg;
 755         switch (level) {
 756         case SND_SOC_BIAS_ON:
 757         case SND_SOC_BIAS_PREPARE:
 758         case SND_SOC_BIAS_STANDBY:
 759                 break;
 760         case SND_SOC_BIAS_OFF:
 761                 reg = wm8580_read(codec, WM8580_PWRDN1);
 762                 wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
 763                 break;
 764         }
 765         codec->bias_level = level;
 766         return 0;
 767 }
 768
 769 #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 770                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 771
 772 struct snd_soc_dai wm8580_dai[] = {
 773         {
 774                 .name = "WM8580 PAIFRX",
 775                 .id = 0,
 776                 .playback = {
 777                         .stream_name = "Playback",
 778                         .channels_min = 1,
 779                         .channels_max = 6,
 780                         .rates = SNDRV_PCM_RATE_8000_192000,
 781                         .formats = WM8580_FORMATS,
 782                 },
 783                 .ops = {
 784                          .hw_params = wm8580_paif_hw_params,
 785                          .set_fmt = wm8580_set_paif_dai_fmt,
 786                          .set_clkdiv = wm8580_set_dai_clkdiv,
 787                          .set_pll = wm8580_set_dai_pll,
 788                          .digital_mute = wm8580_digital_mute,
 789                  },
 790         },
 791         {
 792                 .name = "WM8580 PAIFTX",
 793                 .id = 1,
 794                 .capture = {
 795                         .stream_name = "Capture",
 796                         .channels_min = 2,
 797                         .channels_max = 2,
 798                         .rates = SNDRV_PCM_RATE_8000_192000,
 799                         .formats = WM8580_FORMATS,
 800                 },
 801                 .ops = {
 802                          .hw_params = wm8580_paif_hw_params,
 803                          .set_fmt = wm8580_set_paif_dai_fmt,
 804                          .set_clkdiv = wm8580_set_dai_clkdiv,
 805                          .set_pll = wm8580_set_dai_pll,
 806                  },
 807         },
 808 };
 809 EXPORT_SYMBOL_GPL(wm8580_dai);
 810
 811 /*
 812  * initialise the WM8580 driver
 813  * register the mixer and dsp interfaces with the kernel
 814  */
 815 static int wm8580_init(struct snd_soc_device *socdev)
 816 {
 817         struct snd_soc_codec *codec = socdev->card->codec;
 818         int ret = 0;
 819
 820         codec->name = "WM8580";
 821         codec->owner = THIS_MODULE;
 822         codec->read = wm8580_read_reg_cache;
 823         codec->write = wm8580_write;
 824         codec->set_bias_level = wm8580_set_bias_level;
 825         codec->dai = wm8580_dai;
 826         codec->num_dai = ARRAY_SIZE(wm8580_dai);
 827         codec->reg_cache_size = ARRAY_SIZE(wm8580_reg);
 828         codec->reg_cache = kmemdup(wm8580_reg, sizeof(wm8580_reg),
 829                                    GFP_KERNEL);
 830
 831         if (codec->reg_cache == NULL)
 832                 return -ENOMEM;
 833
 834         /* Get the codec into a known state */
 835         wm8580_write(codec, WM8580_RESET, 0);
 836
 837         /* Power up and get individual control of the DACs */
 838         wm8580_write(codec, WM8580_PWRDN1, wm8580_read(codec, WM8580_PWRDN1) &
 839                      ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD));
 840
 841         /* Make VMID high impedence */
 842         wm8580_write(codec, WM8580_ADC_CONTROL1,
 843                      wm8580_read(codec,  WM8580_ADC_CONTROL1) & ~0x100);
 844
 845         /* register pcms */
 846         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1,
 847                                SNDRV_DEFAULT_STR1);
 848         if (ret < 0) {
 849                 printk(KERN_ERR "wm8580: failed to create pcms\n");
 850                 goto pcm_err;
 851         }
 852
 853         snd_soc_add_controls(codec, wm8580_snd_controls,
 854                                 ARRAY_SIZE(wm8580_snd_controls));
 855         wm8580_add_widgets(codec);
 856
 857         ret = snd_soc_init_card(socdev);
 858         if (ret < 0) {
 859                 printk(KERN_ERR "wm8580: failed to register card\n");
 860                 goto card_err;
 861         }
 862         return ret;
 863
 864 card_err:
 865         snd_soc_free_pcms(socdev);
 866         snd_soc_dapm_free(socdev);
 867 pcm_err:
 868         kfree(codec->reg_cache);
 869         return ret;
 870 }
 871
 872 /* If the i2c layer weren't so broken, we could pass this kind of data
 873    around */
 874 static struct snd_soc_device *wm8580_socdev;
 875
 876 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 877
 878 /*
 879  * WM8580 2 wire address is determined by GPIO5
 880  * state during powerup.
 881  *    low  = 0x1a
 882  *    high = 0x1b
 883  */
 884
 885 static int wm8580_i2c_probe(struct i2c_client *i2c,
 886                             const struct i2c_device_id *id)
 887 {
 888         struct snd_soc_device *socdev = wm8580_socdev;
 889         struct snd_soc_codec *codec = socdev->card->codec;
 890         int ret;
 891
 892         i2c_set_clientdata(i2c, codec);
 893         codec->control_data = i2c;
 894
 895         ret = wm8580_init(socdev);
 896         if (ret < 0)
 897                 dev_err(&i2c->dev, "failed to initialise WM8580\n");
 898         return ret;
 899 }
 900
 901 static int wm8580_i2c_remove(struct i2c_client *client)
 902 {
 903         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 904         kfree(codec->reg_cache);
 905         return 0;
 906 }
 907
 908 static const struct i2c_device_id wm8580_i2c_id[] = {
 909         { "wm8580", 0 },
 910         { }
 911 };
 912 MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
 913
 914 static struct i2c_driver wm8580_i2c_driver = {
 915         .driver = {
 916                 .name = "WM8580 I2C Codec",
 917                 .owner = THIS_MODULE,
 918         },
 919         .probe =    wm8580_i2c_probe,
 920         .remove =   wm8580_i2c_remove,
 921         .id_table = wm8580_i2c_id,
 922 };
 923
 924 static int wm8580_add_i2c_device(struct platform_device *pdev,
 925                                  const struct wm8580_setup_data *setup)
 926 {
 927         struct i2c_board_info info;
 928         struct i2c_adapter *adapter;
 929         struct i2c_client *client;
 930         int ret;
 931
 932         ret = i2c_add_driver(&wm8580_i2c_driver);
 933         if (ret != 0) {
 934                 dev_err(&pdev->dev, "can't add i2c driver\n");
 935                 return ret;
 936         }
 937
 938         memset(&info, 0, sizeof(struct i2c_board_info));
 939         info.addr = setup->i2c_address;
 940         strlcpy(info.type, "wm8580", I2C_NAME_SIZE);
 941
 942         adapter = i2c_get_adapter(setup->i2c_bus);
 943         if (!adapter) {
 944                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 945                         setup->i2c_bus);
 946                 goto err_driver;
 947         }
 948
 949         client = i2c_new_device(adapter, &info);
 950         i2c_put_adapter(adapter);
 951         if (!client) {
 952                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 953                         (unsigned int)info.addr);
 954                 goto err_driver;
 955         }
 956
 957         return 0;
 958
 959 err_driver:
 960         i2c_del_driver(&wm8580_i2c_driver);
 961         return -ENODEV;
 962 }
 963 #endif
 964
 965 static int wm8580_probe(struct platform_device *pdev)
 966 {
 967         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 968         struct wm8580_setup_data *setup;
 969         struct snd_soc_codec *codec;
 970         struct wm8580_priv *wm8580;
 971         int ret = 0;
 972
 973         setup = socdev->codec_data;
 974         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 975         if (codec == NULL)
 976                 return -ENOMEM;
 977
 978         wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
 979         if (wm8580 == NULL) {
 980                 kfree(codec);
 981                 return -ENOMEM;
 982         }
 983
 984         codec->private_data = wm8580;
 985         socdev->card->codec = codec;
 986         mutex_init(&codec->mutex);
 987         INIT_LIST_HEAD(&codec->dapm_widgets);
 988         INIT_LIST_HEAD(&codec->dapm_paths);
 989         wm8580_socdev = socdev;
 990
 991 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 992         if (setup->i2c_address) {
 993                 codec->hw_write = (hw_write_t)i2c_master_send;
 994                 ret = wm8580_add_i2c_device(pdev, setup);
 995         }
 996 #else
 997                 /* Add other interfaces here */
 998 #endif
 999         return ret;
1000 }
1001
1002 /* power down chip */
1003 static int wm8580_remove(struct platform_device *pdev)
1004 {
1005         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1006         struct snd_soc_codec *codec = socdev->card->codec;
1007
1008         if (codec->control_data)
1009                 wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
1010         snd_soc_free_pcms(socdev);
1011         snd_soc_dapm_free(socdev);
1012 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1013         i2c_unregister_device(codec->control_data);
1014         i2c_del_driver(&wm8580_i2c_driver);
1015 #endif
1016         kfree(codec->private_data);
1017         kfree(codec);
1018
1019         return 0;
1020 }
1021
1022 struct snd_soc_codec_device soc_codec_dev_wm8580 = {
1023         .probe =        wm8580_probe,
1024         .remove =       wm8580_remove,
1025 };
1026 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
1027
1028 static int __init wm8580_modinit(void)
1029 {
1030         return snd_soc_register_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
1031 }
1032 module_init(wm8580_modinit);
1033
1034 static void __exit wm8580_exit(void)
1035 {
1036         snd_soc_unregister_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
1037 }
1038 module_exit(wm8580_exit);
1039
1040 MODULE_DESCRIPTION("ASoC WM8580 driver");
1041 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1042 MODULE_LICENSE("GPL");