sound/soc/codecs/uda1380.c

   1 /*
   2  * uda1380.c - Philips UDA1380 ALSA SoC audio driver
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * Copyright (c) 2007 Philipp Zabel <philipp.zabel@gmail.com>
   9  * Improved support for DAPM and audio routing/mixing capabilities,
  10  * added TLV support.
  11  *
  12  * Modified by Richard Purdie <richard@openedhand.com> to fit into SoC
  13  * codec model.
  14  *
  15  * Copyright (c) 2005 Giorgio Padrin <giorgio@mandarinlogiq.org>
  16  * Copyright 2005 Openedhand Ltd.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/init.h>
  21 #include <linux/types.h>
  22 #include <linux/string.h>
  23 #include <linux/slab.h>
  24 #include <linux/errno.h>
  25 #include <linux/ioctl.h>
  26 #include <linux/delay.h>
  27 #include <linux/i2c.h>
  28 #include <sound/core.h>
  29 #include <sound/control.h>
  30 #include <sound/initval.h>
  31 #include <sound/info.h>
  32 #include <sound/soc.h>
  33 #include <sound/soc-dapm.h>
  34 #include <sound/tlv.h>
  35
  36 #include "uda1380.h"
  37
  38 #define UDA1380_VERSION "0.6"
  39 #define AUDIO_NAME "uda1380"
  40
  41 /*
  42  * uda1380 register cache
  43  */
  44 static const u16 uda1380_reg[UDA1380_CACHEREGNUM] = {
  45         0x0502, 0x0000, 0x0000, 0x3f3f,
  46         0x0202, 0x0000, 0x0000, 0x0000,
  47         0x0000, 0x0000, 0x0000, 0x0000,
  48         0x0000, 0x0000, 0x0000, 0x0000,
  49         0x0000, 0xff00, 0x0000, 0x4800,
  50         0x0000, 0x0000, 0x0000, 0x0000,
  51         0x0000, 0x0000, 0x0000, 0x0000,
  52         0x0000, 0x0000, 0x0000, 0x0000,
  53         0x0000, 0x8000, 0x0002, 0x0000,
  54 };
  55
  56 /*
  57  * read uda1380 register cache
  58  */
  59 static inline unsigned int uda1380_read_reg_cache(struct snd_soc_codec *codec,
  60         unsigned int reg)
  61 {
  62         u16 *cache = codec->reg_cache;
  63         if (reg == UDA1380_RESET)
  64                 return 0;
  65         if (reg >= UDA1380_CACHEREGNUM)
  66                 return -1;
  67         return cache[reg];
  68 }
  69
  70 /*
  71  * write uda1380 register cache
  72  */
  73 static inline void uda1380_write_reg_cache(struct snd_soc_codec *codec,
  74         u16 reg, unsigned int value)
  75 {
  76         u16 *cache = codec->reg_cache;
  77         if (reg >= UDA1380_CACHEREGNUM)
  78                 return;
  79         cache[reg] = value;
  80 }
  81
  82 /*
  83  * write to the UDA1380 register space
  84  */
  85 static int uda1380_write(struct snd_soc_codec *codec, unsigned int reg,
  86         unsigned int value)
  87 {
  88         u8 data[3];
  89
  90         /* data is
  91          *   data[0] is register offset
  92          *   data[1] is MS byte
  93          *   data[2] is LS byte
  94          */
  95         data[0] = reg;
  96         data[1] = (value & 0xff00) >> 8;
  97         data[2] = value & 0x00ff;
  98
  99         uda1380_write_reg_cache(codec, reg, value);
 100
 101         /* the interpolator & decimator regs must only be written when the
 102          * codec DAI is active.
 103          */
 104         if (!codec->active && (reg >= UDA1380_MVOL))
 105                 return 0;
 106         pr_debug("uda1380: hw write %x val %x\n", reg, value);
 107         if (codec->hw_write(codec->control_data, data, 3) == 3) {
 108                 unsigned int val;
 109                 i2c_master_send(codec->control_data, data, 1);
 110                 i2c_master_recv(codec->control_data, data, 2);
 111                 val = (data[0]<<8) | data[1];
 112                 if (val != value) {
 113                         pr_debug("uda1380: READ BACK VAL %x\n",
 114                                         (data[0]<<8) | data[1]);
 115                         return -EIO;
 116                 }
 117                 return 0;
 118         } else
 119                 return -EIO;
 120 }
 121
 122 #define uda1380_reset(c)        uda1380_write(c, UDA1380_RESET, 0)
 123
 124 /* declarations of ALSA reg_elem_REAL controls */
 125 static const char *uda1380_deemp[] = {
 126         "None",
 127         "32kHz",
 128         "44.1kHz",
 129         "48kHz",
 130         "96kHz",
 131 };
 132 static const char *uda1380_input_sel[] = {
 133         "Line",
 134         "Mic + Line R",
 135         "Line L",
 136         "Mic",
 137 };
 138 static const char *uda1380_output_sel[] = {
 139         "DAC",
 140         "Analog Mixer",
 141 };
 142 static const char *uda1380_spf_mode[] = {
 143         "Flat",
 144         "Minimum1",
 145         "Minimum2",
 146         "Maximum"
 147 };
 148 static const char *uda1380_capture_sel[] = {
 149         "ADC",
 150         "Digital Mixer"
 151 };
 152 static const char *uda1380_sel_ns[] = {
 153         "3rd-order",
 154         "5th-order"
 155 };
 156 static const char *uda1380_mix_control[] = {
 157         "off",
 158         "PCM only",
 159         "before sound processing",
 160         "after sound processing"
 161 };
 162 static const char *uda1380_sdet_setting[] = {
 163         "3200",
 164         "4800",
 165         "9600",
 166         "19200"
 167 };
 168 static const char *uda1380_os_setting[] = {
 169         "single-speed",
 170         "double-speed (no mixing)",
 171         "quad-speed (no mixing)"
 172 };
 173
 174 static const struct soc_enum uda1380_deemp_enum[] = {
 175         SOC_ENUM_SINGLE(UDA1380_DEEMP, 8, 5, uda1380_deemp),
 176         SOC_ENUM_SINGLE(UDA1380_DEEMP, 0, 5, uda1380_deemp),
 177 };
 178 static const struct soc_enum uda1380_input_sel_enum =
 179         SOC_ENUM_SINGLE(UDA1380_ADC, 2, 4, uda1380_input_sel);          /* SEL_MIC, SEL_LNA */
 180 static const struct soc_enum uda1380_output_sel_enum =
 181         SOC_ENUM_SINGLE(UDA1380_PM, 7, 2, uda1380_output_sel);          /* R02_EN_AVC */
 182 static const struct soc_enum uda1380_spf_enum =
 183         SOC_ENUM_SINGLE(UDA1380_MODE, 14, 4, uda1380_spf_mode);         /* M */
 184 static const struct soc_enum uda1380_capture_sel_enum =
 185         SOC_ENUM_SINGLE(UDA1380_IFACE, 6, 2, uda1380_capture_sel);      /* SEL_SOURCE */
 186 static const struct soc_enum uda1380_sel_ns_enum =
 187         SOC_ENUM_SINGLE(UDA1380_MIXER, 14, 2, uda1380_sel_ns);          /* SEL_NS */
 188 static const struct soc_enum uda1380_mix_enum =
 189         SOC_ENUM_SINGLE(UDA1380_MIXER, 12, 4, uda1380_mix_control);     /* MIX, MIX_POS */
 190 static const struct soc_enum uda1380_sdet_enum =
 191         SOC_ENUM_SINGLE(UDA1380_MIXER, 4, 4, uda1380_sdet_setting);     /* SD_VALUE */
 192 static const struct soc_enum uda1380_os_enum =
 193         SOC_ENUM_SINGLE(UDA1380_MIXER, 0, 3, uda1380_os_setting);       /* OS */
 194
 195 /*
 196  * from -48 dB in 1.5 dB steps (mute instead of -49.5 dB)
 197  */
 198 static DECLARE_TLV_DB_SCALE(amix_tlv, -4950, 150, 1);
 199
 200 /*
 201  * from -78 dB in 1 dB steps (3 dB steps, really. LSB are ignored),
 202  * from -66 dB in 0.5 dB steps (2 dB steps, really) and
 203  * from -52 dB in 0.25 dB steps
 204  */
 205 static const unsigned int mvol_tlv[] = {
 206         TLV_DB_RANGE_HEAD(3),
 207         0, 15, TLV_DB_SCALE_ITEM(-8200, 100, 1),
 208         16, 43, TLV_DB_SCALE_ITEM(-6600, 50, 0),
 209         44, 252, TLV_DB_SCALE_ITEM(-5200, 25, 0),
 210 };
 211
 212 /*
 213  * from -72 dB in 1.5 dB steps (6 dB steps really),
 214  * from -66 dB in 0.75 dB steps (3 dB steps really),
 215  * from -60 dB in 0.5 dB steps (2 dB steps really) and
 216  * from -46 dB in 0.25 dB steps
 217  */
 218 static const unsigned int vc_tlv[] = {
 219         TLV_DB_RANGE_HEAD(4),
 220         0, 7, TLV_DB_SCALE_ITEM(-7800, 150, 1),
 221         8, 15, TLV_DB_SCALE_ITEM(-6600, 75, 0),
 222         16, 43, TLV_DB_SCALE_ITEM(-6000, 50, 0),
 223         44, 228, TLV_DB_SCALE_ITEM(-4600, 25, 0),
 224 };
 225
 226 /* from 0 to 6 dB in 2 dB steps if SPF mode != flat */
 227 static DECLARE_TLV_DB_SCALE(tr_tlv, 0, 200, 0);
 228
 229 /* from 0 to 24 dB in 2 dB steps, if SPF mode == maximum, otherwise cuts
 230  * off at 18 dB max) */
 231 static DECLARE_TLV_DB_SCALE(bb_tlv, 0, 200, 0);
 232
 233 /* from -63 to 24 dB in 0.5 dB steps (-128...48) */
 234 static DECLARE_TLV_DB_SCALE(dec_tlv, -6400, 50, 1);
 235
 236 /* from 0 to 24 dB in 3 dB steps */
 237 static DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
 238
 239 /* from 0 to 30 dB in 2 dB steps */
 240 static DECLARE_TLV_DB_SCALE(vga_tlv, 0, 200, 0);
 241
 242 static const struct snd_kcontrol_new uda1380_snd_controls[] = {
 243         SOC_DOUBLE_TLV("Analog Mixer Volume", UDA1380_AMIX, 0, 8, 44, 1, amix_tlv),     /* AVCR, AVCL */
 244         SOC_DOUBLE_TLV("Master Playback Volume", UDA1380_MVOL, 0, 8, 252, 1, mvol_tlv), /* MVCL, MVCR */
 245         SOC_SINGLE_TLV("ADC Playback Volume", UDA1380_MIXVOL, 8, 228, 1, vc_tlv),       /* VC2 */
 246         SOC_SINGLE_TLV("PCM Playback Volume", UDA1380_MIXVOL, 0, 228, 1, vc_tlv),       /* VC1 */
 247         SOC_ENUM("Sound Processing Filter", uda1380_spf_enum),                          /* M */
 248         SOC_DOUBLE_TLV("Tone Control - Treble", UDA1380_MODE, 4, 12, 3, 0, tr_tlv),     /* TRL, TRR */
 249         SOC_DOUBLE_TLV("Tone Control - Bass", UDA1380_MODE, 0, 8, 15, 0, bb_tlv),       /* BBL, BBR */
 250 /**/    SOC_SINGLE("Master Playback Switch", UDA1380_DEEMP, 14, 1, 1),          /* MTM */
 251         SOC_SINGLE("ADC Playback Switch", UDA1380_DEEMP, 11, 1, 1),             /* MT2 from decimation filter */
 252         SOC_ENUM("ADC Playback De-emphasis", uda1380_deemp_enum[0]),            /* DE2 */
 253         SOC_SINGLE("PCM Playback Switch", UDA1380_DEEMP, 3, 1, 1),              /* MT1, from digital data input */
 254         SOC_ENUM("PCM Playback De-emphasis", uda1380_deemp_enum[1]),            /* DE1 */
 255         SOC_SINGLE("DAC Polarity inverting Switch", UDA1380_MIXER, 15, 1, 0),   /* DA_POL_INV */
 256         SOC_ENUM("Noise Shaper", uda1380_sel_ns_enum),                          /* SEL_NS */
 257         SOC_ENUM("Digital Mixer Signal Control", uda1380_mix_enum),             /* MIX_POS, MIX */
 258         SOC_SINGLE("Silence Switch", UDA1380_MIXER, 7, 1, 0),                   /* SILENCE, force DAC output to silence */
 259         SOC_SINGLE("Silence Detector Switch", UDA1380_MIXER, 6, 1, 0),          /* SDET_ON */
 260         SOC_ENUM("Silence Detector Setting", uda1380_sdet_enum),                /* SD_VALUE */
 261         SOC_ENUM("Oversampling Input", uda1380_os_enum),                        /* OS */
 262         SOC_DOUBLE_S8_TLV("ADC Capture Volume", UDA1380_DEC, -128, 48, dec_tlv),        /* ML_DEC, MR_DEC */
 263 /**/    SOC_SINGLE("ADC Capture Switch", UDA1380_PGA, 15, 1, 1),                /* MT_ADC */
 264         SOC_DOUBLE_TLV("Line Capture Volume", UDA1380_PGA, 0, 8, 8, 0, pga_tlv), /* PGA_GAINCTRLL, PGA_GAINCTRLR */
 265         SOC_SINGLE("ADC Polarity inverting Switch", UDA1380_ADC, 12, 1, 0),     /* ADCPOL_INV */
 266         SOC_SINGLE_TLV("Mic Capture Volume", UDA1380_ADC, 8, 15, 0, vga_tlv),   /* VGA_CTRL */
 267         SOC_SINGLE("DC Filter Bypass Switch", UDA1380_ADC, 1, 1, 0),            /* SKIP_DCFIL (before decimator) */
 268         SOC_SINGLE("DC Filter Enable Switch", UDA1380_ADC, 0, 1, 0),            /* EN_DCFIL (at output of decimator) */
 269         SOC_SINGLE("AGC Timing", UDA1380_AGC, 8, 7, 0),                 /* TODO: enum, see table 62 */
 270         SOC_SINGLE("AGC Target level", UDA1380_AGC, 2, 3, 1),                   /* AGC_LEVEL */
 271         /* -5.5, -8, -11.5, -14 dBFS */
 272         SOC_SINGLE("AGC Switch", UDA1380_AGC, 0, 1, 0),
 273 };
 274
 275 /* add non dapm controls */
 276 static int uda1380_add_controls(struct snd_soc_codec *codec)
 277 {
 278         int err, i;
 279
 280         for (i = 0; i < ARRAY_SIZE(uda1380_snd_controls); i++) {
 281                 err = snd_ctl_add(codec->card,
 282                         snd_soc_cnew(&uda1380_snd_controls[i], codec, NULL));
 283                 if (err < 0)
 284                         return err;
 285         }
 286
 287         return 0;
 288 }
 289
 290 /* Input mux */
 291 static const struct snd_kcontrol_new uda1380_input_mux_control =
 292         SOC_DAPM_ENUM("Route", uda1380_input_sel_enum);
 293
 294 /* Output mux */
 295 static const struct snd_kcontrol_new uda1380_output_mux_control =
 296         SOC_DAPM_ENUM("Route", uda1380_output_sel_enum);
 297
 298 /* Capture mux */
 299 static const struct snd_kcontrol_new uda1380_capture_mux_control =
 300         SOC_DAPM_ENUM("Route", uda1380_capture_sel_enum);
 301
 302
 303 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 304         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 305                 &uda1380_input_mux_control),
 306         SND_SOC_DAPM_MUX("Output Mux", SND_SOC_NOPM, 0, 0,
 307                 &uda1380_output_mux_control),
 308         SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0,
 309                 &uda1380_capture_mux_control),
 310         SND_SOC_DAPM_PGA("Left PGA", UDA1380_PM, 3, 0, NULL, 0),
 311         SND_SOC_DAPM_PGA("Right PGA", UDA1380_PM, 1, 0, NULL, 0),
 312         SND_SOC_DAPM_PGA("Mic LNA", UDA1380_PM, 4, 0, NULL, 0),
 313         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", UDA1380_PM, 2, 0),
 314         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", UDA1380_PM, 0, 0),
 315         SND_SOC_DAPM_INPUT("VINM"),
 316         SND_SOC_DAPM_INPUT("VINL"),
 317         SND_SOC_DAPM_INPUT("VINR"),
 318         SND_SOC_DAPM_MIXER("Analog Mixer", UDA1380_PM, 6, 0, NULL, 0),
 319         SND_SOC_DAPM_OUTPUT("VOUTLHP"),
 320         SND_SOC_DAPM_OUTPUT("VOUTRHP"),
 321         SND_SOC_DAPM_OUTPUT("VOUTL"),
 322         SND_SOC_DAPM_OUTPUT("VOUTR"),
 323         SND_SOC_DAPM_DAC("DAC", "Playback", UDA1380_PM, 10, 0),
 324         SND_SOC_DAPM_PGA("HeadPhone Driver", UDA1380_PM, 13, 0, NULL, 0),
 325 };
 326
 327 static const struct snd_soc_dapm_route audio_map[] = {
 328
 329         /* output mux */
 330         {"HeadPhone Driver", NULL, "Output Mux"},
 331         {"VOUTR", NULL, "Output Mux"},
 332         {"VOUTL", NULL, "Output Mux"},
 333
 334         {"Analog Mixer", NULL, "VINR"},
 335         {"Analog Mixer", NULL, "VINL"},
 336         {"Analog Mixer", NULL, "DAC"},
 337
 338         {"Output Mux", "DAC", "DAC"},
 339         {"Output Mux", "Analog Mixer", "Analog Mixer"},
 340
 341         /* {"DAC", "Digital Mixer", "I2S" } */
 342
 343         /* headphone driver */
 344         {"VOUTLHP", NULL, "HeadPhone Driver"},
 345         {"VOUTRHP", NULL, "HeadPhone Driver"},
 346
 347         /* input mux */
 348         {"Left ADC", NULL, "Input Mux"},
 349         {"Input Mux", "Mic", "Mic LNA"},
 350         {"Input Mux", "Mic + Line R", "Mic LNA"},
 351         {"Input Mux", "Line L", "Left PGA"},
 352         {"Input Mux", "Line", "Left PGA"},
 353
 354         /* right input */
 355         {"Right ADC", "Mic + Line R", "Right PGA"},
 356         {"Right ADC", "Line", "Right PGA"},
 357
 358         /* inputs */
 359         {"Mic LNA", NULL, "VINM"},
 360         {"Left PGA", NULL, "VINL"},
 361         {"Right PGA", NULL, "VINR"},
 362 };
 363
 364 static int uda1380_add_widgets(struct snd_soc_codec *codec)
 365 {
 366         snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
 367                                   ARRAY_SIZE(uda1380_dapm_widgets));
 368
 369         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 370
 371         snd_soc_dapm_new_widgets(codec);
 372         return 0;
 373 }
 374
 375 static int uda1380_set_dai_fmt(struct snd_soc_dai *codec_dai,
 376                 unsigned int fmt)
 377 {
 378         struct snd_soc_codec *codec = codec_dai->codec;
 379         int iface;
 380
 381         /* set up DAI based upon fmt */
 382         iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
 383         iface &= ~(R01_SFORI_MASK | R01_SIM | R01_SFORO_MASK);
 384
 385         /* FIXME: how to select I2S for DATAO and MSB for DATAI correctly? */
 386         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 387         case SND_SOC_DAIFMT_I2S:
 388                 iface |= R01_SFORI_I2S | R01_SFORO_I2S;
 389                 break;
 390         case SND_SOC_DAIFMT_LSB:
 391                 iface |= R01_SFORI_LSB16 | R01_SFORO_I2S;
 392                 break;
 393         case SND_SOC_DAIFMT_MSB:
 394                 iface |= R01_SFORI_MSB | R01_SFORO_I2S;
 395         }
 396
 397         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFM)
 398                 iface |= R01_SIM;
 399
 400         uda1380_write(codec, UDA1380_IFACE, iface);
 401
 402         return 0;
 403 }
 404
 405 /*
 406  * Flush reg cache
 407  * We can only write the interpolator and decimator registers
 408  * when the DAI is being clocked by the CPU DAI. It's up to the
 409  * machine and cpu DAI driver to do this before we are called.
 410  */
 411 static int uda1380_pcm_prepare(struct snd_pcm_substream *substream)
 412 {
 413         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 414         struct snd_soc_device *socdev = rtd->socdev;
 415         struct snd_soc_codec *codec = socdev->codec;
 416         int reg, reg_start, reg_end, clk;
 417
 418         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 419                 reg_start = UDA1380_MVOL;
 420                 reg_end = UDA1380_MIXER;
 421         } else {
 422                 reg_start = UDA1380_DEC;
 423                 reg_end = UDA1380_AGC;
 424         }
 425
 426         /* FIXME disable DAC_CLK */
 427         clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
 428         uda1380_write(codec, UDA1380_CLK, clk & ~R00_DAC_CLK);
 429
 430         for (reg = reg_start; reg <= reg_end; reg++) {
 431                 pr_debug("uda1380: flush reg %x val %x:", reg,
 432                                 uda1380_read_reg_cache(codec, reg));
 433                 uda1380_write(codec, reg, uda1380_read_reg_cache(codec, reg));
 434         }
 435
 436         /* FIXME enable DAC_CLK */
 437         uda1380_write(codec, UDA1380_CLK, clk | R00_DAC_CLK);
 438
 439         return 0;
 440 }
 441
 442 static int uda1380_pcm_hw_params(struct snd_pcm_substream *substream,
 443         struct snd_pcm_hw_params *params)
 444 {
 445         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 446         struct snd_soc_device *socdev = rtd->socdev;
 447         struct snd_soc_codec *codec = socdev->codec;
 448         u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
 449
 450         /* set WSPLL power and divider if running from this clock */
 451         if (clk & R00_DAC_CLK) {
 452                 int rate = params_rate(params);
 453                 u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
 454                 clk &= ~0x3; /* clear SEL_LOOP_DIV */
 455                 switch (rate) {
 456                 case 6250 ... 12500:
 457                         clk |= 0x0;
 458                         break;
 459                 case 12501 ... 25000:
 460                         clk |= 0x1;
 461                         break;
 462                 case 25001 ... 50000:
 463                         clk |= 0x2;
 464                         break;
 465                 case 50001 ... 100000:
 466                         clk |= 0x3;
 467                         break;
 468                 }
 469                 uda1380_write(codec, UDA1380_PM, R02_PON_PLL | pm);
 470         }
 471
 472         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 473                 clk |= R00_EN_DAC | R00_EN_INT;
 474         else
 475                 clk |= R00_EN_ADC | R00_EN_DEC;
 476
 477         uda1380_write(codec, UDA1380_CLK, clk);
 478         return 0;
 479 }
 480
 481 static void uda1380_pcm_shutdown(struct snd_pcm_substream *substream)
 482 {
 483         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 484         struct snd_soc_device *socdev = rtd->socdev;
 485         struct snd_soc_codec *codec = socdev->codec;
 486         u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
 487
 488         /* shut down WSPLL power if running from this clock */
 489         if (clk & R00_DAC_CLK) {
 490                 u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
 491                 uda1380_write(codec, UDA1380_PM, ~R02_PON_PLL & pm);
 492         }
 493
 494         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 495                 clk &= ~(R00_EN_DAC | R00_EN_INT);
 496         else
 497                 clk &= ~(R00_EN_ADC | R00_EN_DEC);
 498
 499         uda1380_write(codec, UDA1380_CLK, clk);
 500 }
 501
 502 static int uda1380_mute(struct snd_soc_dai *codec_dai, int mute)
 503 {
 504         struct snd_soc_codec *codec = codec_dai->codec;
 505         u16 mute_reg = uda1380_read_reg_cache(codec, UDA1380_DEEMP) & ~R13_MTM;
 506
 507         /* FIXME: mute(codec,0) is called when the magician clock is already
 508          * set to WSPLL, but for some unknown reason writing to interpolator
 509          * registers works only when clocked by SYSCLK */
 510         u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
 511         uda1380_write(codec, UDA1380_CLK, ~R00_DAC_CLK & clk);
 512         if (mute)
 513                 uda1380_write(codec, UDA1380_DEEMP, mute_reg | R13_MTM);
 514         else
 515                 uda1380_write(codec, UDA1380_DEEMP, mute_reg);
 516         uda1380_write(codec, UDA1380_CLK, clk);
 517         return 0;
 518 }
 519
 520 static int uda1380_set_bias_level(struct snd_soc_codec *codec,
 521         enum snd_soc_bias_level level)
 522 {
 523         int pm = uda1380_read_reg_cache(codec, UDA1380_PM);
 524
 525         switch (level) {
 526         case SND_SOC_BIAS_ON:
 527         case SND_SOC_BIAS_PREPARE:
 528                 uda1380_write(codec, UDA1380_PM, R02_PON_BIAS | pm);
 529                 break;
 530         case SND_SOC_BIAS_STANDBY:
 531                 uda1380_write(codec, UDA1380_PM, R02_PON_BIAS);
 532                 break;
 533         case SND_SOC_BIAS_OFF:
 534                 uda1380_write(codec, UDA1380_PM, 0x0);
 535                 break;
 536         }
 537         codec->bias_level = level;
 538         return 0;
 539 }
 540
 541 #define UDA1380_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 542                        SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 543                        SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 544
 545 struct snd_soc_dai uda1380_dai[] = {
 546 {
 547         .name = "UDA1380",
 548         .playback = {
 549                 .stream_name = "Playback",
 550                 .channels_min = 1,
 551                 .channels_max = 2,
 552                 .rates = UDA1380_RATES,
 553                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 554         .capture = {
 555                 .stream_name = "Capture",
 556                 .channels_min = 1,
 557                 .channels_max = 2,
 558                 .rates = UDA1380_RATES,
 559                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 560         .ops = {
 561                 .hw_params = uda1380_pcm_hw_params,
 562                 .shutdown = uda1380_pcm_shutdown,
 563                 .prepare = uda1380_pcm_prepare,
 564         },
 565         .dai_ops = {
 566                 .digital_mute = uda1380_mute,
 567                 .set_fmt = uda1380_set_dai_fmt,
 568         },
 569 },
 570 { /* playback only - dual interface */
 571         .name = "UDA1380",
 572         .playback = {
 573                 .stream_name = "Playback",
 574                 .channels_min = 1,
 575                 .channels_max = 2,
 576                 .rates = UDA1380_RATES,
 577                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 578         },
 579         .ops = {
 580                 .hw_params = uda1380_pcm_hw_params,
 581                 .shutdown = uda1380_pcm_shutdown,
 582                 .prepare = uda1380_pcm_prepare,
 583         },
 584         .dai_ops = {
 585                 .digital_mute = uda1380_mute,
 586                 .set_fmt = uda1380_set_dai_fmt,
 587         },
 588 },
 589 { /* capture only - dual interface*/
 590         .name = "UDA1380",
 591         .capture = {
 592                 .stream_name = "Capture",
 593                 .channels_min = 1,
 594                 .channels_max = 2,
 595                 .rates = UDA1380_RATES,
 596                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 597         },
 598         .ops = {
 599                 .hw_params = uda1380_pcm_hw_params,
 600                 .shutdown = uda1380_pcm_shutdown,
 601                 .prepare = uda1380_pcm_prepare,
 602         },
 603         .dai_ops = {
 604                 .set_fmt = uda1380_set_dai_fmt,
 605         },
 606 },
 607 };
 608 EXPORT_SYMBOL_GPL(uda1380_dai);
 609
 610 static int uda1380_suspend(struct platform_device *pdev, pm_message_t state)
 611 {
 612         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 613         struct snd_soc_codec *codec = socdev->codec;
 614
 615         uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
 616         return 0;
 617 }
 618
 619 static int uda1380_resume(struct platform_device *pdev)
 620 {
 621         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 622         struct snd_soc_codec *codec = socdev->codec;
 623         int i;
 624         u8 data[2];
 625         u16 *cache = codec->reg_cache;
 626
 627         /* Sync reg_cache with the hardware */
 628         for (i = 0; i < ARRAY_SIZE(uda1380_reg); i++) {
 629                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 630                 data[1] = cache[i] & 0x00ff;
 631                 codec->hw_write(codec->control_data, data, 2);
 632         }
 633         uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 634         uda1380_set_bias_level(codec, codec->suspend_bias_level);
 635         return 0;
 636 }
 637
 638 /*
 639  * initialise the UDA1380 driver
 640  * register mixer and dsp interfaces with the kernel
 641  */
 642 static int uda1380_init(struct snd_soc_device *socdev, int dac_clk)
 643 {
 644         struct snd_soc_codec *codec = socdev->codec;
 645         int ret = 0;
 646
 647         codec->name = "UDA1380";
 648         codec->owner = THIS_MODULE;
 649         codec->read = uda1380_read_reg_cache;
 650         codec->write = uda1380_write;
 651         codec->set_bias_level = uda1380_set_bias_level;
 652         codec->dai = uda1380_dai;
 653         codec->num_dai = ARRAY_SIZE(uda1380_dai);
 654         codec->reg_cache = kmemdup(uda1380_reg, sizeof(uda1380_reg),
 655                                    GFP_KERNEL);
 656         if (codec->reg_cache == NULL)
 657                 return -ENOMEM;
 658         codec->reg_cache_size = ARRAY_SIZE(uda1380_reg);
 659         codec->reg_cache_step = 1;
 660         uda1380_reset(codec);
 661
 662         /* register pcms */
 663         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 664         if (ret < 0) {
 665                 pr_err("uda1380: failed to create pcms\n");
 666                 goto pcm_err;
 667         }
 668
 669         /* power on device */
 670         uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 671         /* set clock input */
 672         switch (dac_clk) {
 673         case UDA1380_DAC_CLK_SYSCLK:
 674                 uda1380_write(codec, UDA1380_CLK, 0);
 675                 break;
 676         case UDA1380_DAC_CLK_WSPLL:
 677                 uda1380_write(codec, UDA1380_CLK, R00_DAC_CLK);
 678                 break;
 679         }
 680
 681         /* uda1380 init */
 682         uda1380_add_controls(codec);
 683         uda1380_add_widgets(codec);
 684         ret = snd_soc_register_card(socdev);
 685         if (ret < 0) {
 686                 pr_err("uda1380: failed to register card\n");
 687                 goto card_err;
 688         }
 689
 690         return ret;
 691
 692 card_err:
 693         snd_soc_free_pcms(socdev);
 694         snd_soc_dapm_free(socdev);
 695 pcm_err:
 696         kfree(codec->reg_cache);
 697         return ret;
 698 }
 699
 700 static struct snd_soc_device *uda1380_socdev;
 701
 702 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 703
 704 static int uda1380_i2c_probe(struct i2c_client *i2c,
 705                              const struct i2c_device_id *id)
 706 {
 707         struct snd_soc_device *socdev = uda1380_socdev;
 708         struct uda1380_setup_data *setup = socdev->codec_data;
 709         struct snd_soc_codec *codec = socdev->codec;
 710         int ret;
 711
 712         i2c_set_clientdata(i2c, codec);
 713         codec->control_data = i2c;
 714
 715         ret = uda1380_init(socdev, setup->dac_clk);
 716         if (ret < 0)
 717                 pr_err("uda1380: failed to initialise UDA1380\n");
 718
 719         return ret;
 720 }
 721
 722 static int uda1380_i2c_remove(struct i2c_client *client)
 723 {
 724         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 725         kfree(codec->reg_cache);
 726         return 0;
 727 }
 728
 729 static const struct i2c_device_id uda1380_i2c_id[] = {
 730         { "uda1380", 0 },
 731         { }
 732 };
 733 MODULE_DEVICE_TABLE(i2c, uda1380_i2c_id);
 734
 735 static struct i2c_driver uda1380_i2c_driver = {
 736         .driver = {
 737                 .name =  "UDA1380 I2C Codec",
 738                 .owner = THIS_MODULE,
 739         },
 740         .probe =    uda1380_i2c_probe,
 741         .remove =   uda1380_i2c_remove,
 742         .id_table = uda1380_i2c_id,
 743 };
 744
 745 static int uda1380_add_i2c_device(struct platform_device *pdev,
 746                                   const struct uda1380_setup_data *setup)
 747 {
 748         struct i2c_board_info info;
 749         struct i2c_adapter *adapter;
 750         struct i2c_client *client;
 751         int ret;
 752
 753         ret = i2c_add_driver(&uda1380_i2c_driver);
 754         if (ret != 0) {
 755                 dev_err(&pdev->dev, "can't add i2c driver\n");
 756                 return ret;
 757         }
 758
 759         memset(&info, 0, sizeof(struct i2c_board_info));
 760         info.addr = setup->i2c_address;
 761         strlcpy(info.type, "uda1380", I2C_NAME_SIZE);
 762
 763         adapter = i2c_get_adapter(setup->i2c_bus);
 764         if (!adapter) {
 765                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 766                         setup->i2c_bus);
 767                 goto err_driver;
 768         }
 769
 770         client = i2c_new_device(adapter, &info);
 771         i2c_put_adapter(adapter);
 772         if (!client) {
 773                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 774                         (unsigned int)info.addr);
 775                 goto err_driver;
 776         }
 777
 778         return 0;
 779
 780 err_driver:
 781         i2c_del_driver(&uda1380_i2c_driver);
 782         return -ENODEV;
 783 }
 784 #endif
 785
 786 static int uda1380_probe(struct platform_device *pdev)
 787 {
 788         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 789         struct uda1380_setup_data *setup;
 790         struct snd_soc_codec *codec;
 791         int ret;
 792
 793         pr_info("UDA1380 Audio Codec %s", UDA1380_VERSION);
 794
 795         setup = socdev->codec_data;
 796         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 797         if (codec == NULL)
 798                 return -ENOMEM;
 799
 800         socdev->codec = codec;
 801         mutex_init(&codec->mutex);
 802         INIT_LIST_HEAD(&codec->dapm_widgets);
 803         INIT_LIST_HEAD(&codec->dapm_paths);
 804
 805         uda1380_socdev = socdev;
 806         ret = -ENODEV;
 807
 808 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 809         if (setup->i2c_address) {
 810                 codec->hw_write = (hw_write_t)i2c_master_send;
 811                 ret = uda1380_add_i2c_device(pdev, setup);
 812         }
 813 #endif
 814
 815         if (ret != 0)
 816                 kfree(codec);
 817         return ret;
 818 }
 819
 820 /* power down chip */
 821 static int uda1380_remove(struct platform_device *pdev)
 822 {
 823         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 824         struct snd_soc_codec *codec = socdev->codec;
 825
 826         if (codec->control_data)
 827                 uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
 828
 829         snd_soc_free_pcms(socdev);
 830         snd_soc_dapm_free(socdev);
 831 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 832         i2c_unregister_device(codec->control_data);
 833         i2c_del_driver(&uda1380_i2c_driver);
 834 #endif
 835         kfree(codec);
 836
 837         return 0;
 838 }
 839
 840 struct snd_soc_codec_device soc_codec_dev_uda1380 = {
 841         .probe =        uda1380_probe,
 842         .remove =       uda1380_remove,
 843         .suspend =      uda1380_suspend,
 844         .resume =       uda1380_resume,
 845 };
 846 EXPORT_SYMBOL_GPL(soc_codec_dev_uda1380);
 847
 848 MODULE_AUTHOR("Giorgio Padrin");
 849 MODULE_DESCRIPTION("Audio support for codec Philips UDA1380");
 850 MODULE_LICENSE("GPL");