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 <linux/workqueue.h>
  29 #include <sound/core.h>
  30 #include <sound/control.h>
  31 #include <sound/initval.h>
  32 #include <sound/info.h>
  33 #include <sound/soc.h>
  34 #include <sound/soc-dapm.h>
  35 #include <sound/tlv.h>
  36
  37 #include "uda1380.h"
  38
  39 static struct work_struct uda1380_work;
  40 static struct snd_soc_codec *uda1380_codec;
  41
  42 /*
  43  * uda1380 register cache
  44  */
  45 static const u16 uda1380_reg[UDA1380_CACHEREGNUM] = {
  46         0x0502, 0x0000, 0x0000, 0x3f3f,
  47         0x0202, 0x0000, 0x0000, 0x0000,
  48         0x0000, 0x0000, 0x0000, 0x0000,
  49         0x0000, 0x0000, 0x0000, 0x0000,
  50         0x0000, 0xff00, 0x0000, 0x4800,
  51         0x0000, 0x0000, 0x0000, 0x0000,
  52         0x0000, 0x0000, 0x0000, 0x0000,
  53         0x0000, 0x0000, 0x0000, 0x0000,
  54         0x0000, 0x8000, 0x0002, 0x0000,
  55 };
  56
  57 static unsigned long uda1380_cache_dirty;
  58
  59 /*
  60  * read uda1380 register cache
  61  */
  62 static inline unsigned int uda1380_read_reg_cache(struct snd_soc_codec *codec,
  63         unsigned int reg)
  64 {
  65         u16 *cache = codec->reg_cache;
  66         if (reg == UDA1380_RESET)
  67                 return 0;
  68         if (reg >= UDA1380_CACHEREGNUM)
  69                 return -1;
  70         return cache[reg];
  71 }
  72
  73 /*
  74  * write uda1380 register cache
  75  */
  76 static inline void uda1380_write_reg_cache(struct snd_soc_codec *codec,
  77         u16 reg, unsigned int value)
  78 {
  79         u16 *cache = codec->reg_cache;
  80
  81         if (reg >= UDA1380_CACHEREGNUM)
  82                 return;
  83         if ((reg >= 0x10) && (cache[reg] != value))
  84                 set_bit(reg - 0x10, &uda1380_cache_dirty);
  85         cache[reg] = value;
  86 }
  87
  88 /*
  89  * write to the UDA1380 register space
  90  */
  91 static int uda1380_write(struct snd_soc_codec *codec, unsigned int reg,
  92         unsigned int value)
  93 {
  94         u8 data[3];
  95
  96         /* data is
  97          *   data[0] is register offset
  98          *   data[1] is MS byte
  99          *   data[2] is LS byte
 100          */
 101         data[0] = reg;
 102         data[1] = (value & 0xff00) >> 8;
 103         data[2] = value & 0x00ff;
 104
 105         uda1380_write_reg_cache(codec, reg, value);
 106
 107         /* the interpolator & decimator regs must only be written when the
 108          * codec DAI is active.
 109          */
 110         if (!codec->active && (reg >= UDA1380_MVOL))
 111                 return 0;
 112         pr_debug("uda1380: hw write %x val %x\n", reg, value);
 113         if (codec->hw_write(codec->control_data, data, 3) == 3) {
 114                 unsigned int val;
 115                 i2c_master_send(codec->control_data, data, 1);
 116                 i2c_master_recv(codec->control_data, data, 2);
 117                 val = (data[0]<<8) | data[1];
 118                 if (val != value) {
 119                         pr_debug("uda1380: READ BACK VAL %x\n",
 120                                         (data[0]<<8) | data[1]);
 121                         return -EIO;
 122                 }
 123                 if (reg >= 0x10)
 124                         clear_bit(reg - 0x10, &uda1380_cache_dirty);
 125                 return 0;
 126         } else
 127                 return -EIO;
 128 }
 129
 130 #define uda1380_reset(c)        uda1380_write(c, UDA1380_RESET, 0)
 131
 132 static void uda1380_flush_work(struct work_struct *work)
 133 {
 134         int bit, reg;
 135
 136         for_each_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
 137                 reg = 0x10 + bit;
 138                 pr_debug("uda1380: flush reg %x val %x:\n", reg,
 139                                 uda1380_read_reg_cache(uda1380_codec, reg));
 140                 uda1380_write(uda1380_codec, reg,
 141                                 uda1380_read_reg_cache(uda1380_codec, reg));
 142                 clear_bit(bit, &uda1380_cache_dirty);
 143         }
 144 }
 145
 146 /* declarations of ALSA reg_elem_REAL controls */
 147 static const char *uda1380_deemp[] = {
 148         "None",
 149         "32kHz",
 150         "44.1kHz",
 151         "48kHz",
 152         "96kHz",
 153 };
 154 static const char *uda1380_input_sel[] = {
 155         "Line",
 156         "Mic + Line R",
 157         "Line L",
 158         "Mic",
 159 };
 160 static const char *uda1380_output_sel[] = {
 161         "DAC",
 162         "Analog Mixer",
 163 };
 164 static const char *uda1380_spf_mode[] = {
 165         "Flat",
 166         "Minimum1",
 167         "Minimum2",
 168         "Maximum"
 169 };
 170 static const char *uda1380_capture_sel[] = {
 171         "ADC",
 172         "Digital Mixer"
 173 };
 174 static const char *uda1380_sel_ns[] = {
 175         "3rd-order",
 176         "5th-order"
 177 };
 178 static const char *uda1380_mix_control[] = {
 179         "off",
 180         "PCM only",
 181         "before sound processing",
 182         "after sound processing"
 183 };
 184 static const char *uda1380_sdet_setting[] = {
 185         "3200",
 186         "4800",
 187         "9600",
 188         "19200"
 189 };
 190 static const char *uda1380_os_setting[] = {
 191         "single-speed",
 192         "double-speed (no mixing)",
 193         "quad-speed (no mixing)"
 194 };
 195
 196 static const struct soc_enum uda1380_deemp_enum[] = {
 197         SOC_ENUM_SINGLE(UDA1380_DEEMP, 8, 5, uda1380_deemp),
 198         SOC_ENUM_SINGLE(UDA1380_DEEMP, 0, 5, uda1380_deemp),
 199 };
 200 static const struct soc_enum uda1380_input_sel_enum =
 201         SOC_ENUM_SINGLE(UDA1380_ADC, 2, 4, uda1380_input_sel);          /* SEL_MIC, SEL_LNA */
 202 static const struct soc_enum uda1380_output_sel_enum =
 203         SOC_ENUM_SINGLE(UDA1380_PM, 7, 2, uda1380_output_sel);          /* R02_EN_AVC */
 204 static const struct soc_enum uda1380_spf_enum =
 205         SOC_ENUM_SINGLE(UDA1380_MODE, 14, 4, uda1380_spf_mode);         /* M */
 206 static const struct soc_enum uda1380_capture_sel_enum =
 207         SOC_ENUM_SINGLE(UDA1380_IFACE, 6, 2, uda1380_capture_sel);      /* SEL_SOURCE */
 208 static const struct soc_enum uda1380_sel_ns_enum =
 209         SOC_ENUM_SINGLE(UDA1380_MIXER, 14, 2, uda1380_sel_ns);          /* SEL_NS */
 210 static const struct soc_enum uda1380_mix_enum =
 211         SOC_ENUM_SINGLE(UDA1380_MIXER, 12, 4, uda1380_mix_control);     /* MIX, MIX_POS */
 212 static const struct soc_enum uda1380_sdet_enum =
 213         SOC_ENUM_SINGLE(UDA1380_MIXER, 4, 4, uda1380_sdet_setting);     /* SD_VALUE */
 214 static const struct soc_enum uda1380_os_enum =
 215         SOC_ENUM_SINGLE(UDA1380_MIXER, 0, 3, uda1380_os_setting);       /* OS */
 216
 217 /*
 218  * from -48 dB in 1.5 dB steps (mute instead of -49.5 dB)
 219  */
 220 static DECLARE_TLV_DB_SCALE(amix_tlv, -4950, 150, 1);
 221
 222 /*
 223  * from -78 dB in 1 dB steps (3 dB steps, really. LSB are ignored),
 224  * from -66 dB in 0.5 dB steps (2 dB steps, really) and
 225  * from -52 dB in 0.25 dB steps
 226  */
 227 static const unsigned int mvol_tlv[] = {
 228         TLV_DB_RANGE_HEAD(3),
 229         0, 15, TLV_DB_SCALE_ITEM(-8200, 100, 1),
 230         16, 43, TLV_DB_SCALE_ITEM(-6600, 50, 0),
 231         44, 252, TLV_DB_SCALE_ITEM(-5200, 25, 0),
 232 };
 233
 234 /*
 235  * from -72 dB in 1.5 dB steps (6 dB steps really),
 236  * from -66 dB in 0.75 dB steps (3 dB steps really),
 237  * from -60 dB in 0.5 dB steps (2 dB steps really) and
 238  * from -46 dB in 0.25 dB steps
 239  */
 240 static const unsigned int vc_tlv[] = {
 241         TLV_DB_RANGE_HEAD(4),
 242         0, 7, TLV_DB_SCALE_ITEM(-7800, 150, 1),
 243         8, 15, TLV_DB_SCALE_ITEM(-6600, 75, 0),
 244         16, 43, TLV_DB_SCALE_ITEM(-6000, 50, 0),
 245         44, 228, TLV_DB_SCALE_ITEM(-4600, 25, 0),
 246 };
 247
 248 /* from 0 to 6 dB in 2 dB steps if SPF mode != flat */
 249 static DECLARE_TLV_DB_SCALE(tr_tlv, 0, 200, 0);
 250
 251 /* from 0 to 24 dB in 2 dB steps, if SPF mode == maximum, otherwise cuts
 252  * off at 18 dB max) */
 253 static DECLARE_TLV_DB_SCALE(bb_tlv, 0, 200, 0);
 254
 255 /* from -63 to 24 dB in 0.5 dB steps (-128...48) */
 256 static DECLARE_TLV_DB_SCALE(dec_tlv, -6400, 50, 1);
 257
 258 /* from 0 to 24 dB in 3 dB steps */
 259 static DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
 260
 261 /* from 0 to 30 dB in 2 dB steps */
 262 static DECLARE_TLV_DB_SCALE(vga_tlv, 0, 200, 0);
 263
 264 static const struct snd_kcontrol_new uda1380_snd_controls[] = {
 265         SOC_DOUBLE_TLV("Analog Mixer Volume", UDA1380_AMIX, 0, 8, 44, 1, amix_tlv),     /* AVCR, AVCL */
 266         SOC_DOUBLE_TLV("Master Playback Volume", UDA1380_MVOL, 0, 8, 252, 1, mvol_tlv), /* MVCL, MVCR */
 267         SOC_SINGLE_TLV("ADC Playback Volume", UDA1380_MIXVOL, 8, 228, 1, vc_tlv),       /* VC2 */
 268         SOC_SINGLE_TLV("PCM Playback Volume", UDA1380_MIXVOL, 0, 228, 1, vc_tlv),       /* VC1 */
 269         SOC_ENUM("Sound Processing Filter", uda1380_spf_enum),                          /* M */
 270         SOC_DOUBLE_TLV("Tone Control - Treble", UDA1380_MODE, 4, 12, 3, 0, tr_tlv),     /* TRL, TRR */
 271         SOC_DOUBLE_TLV("Tone Control - Bass", UDA1380_MODE, 0, 8, 15, 0, bb_tlv),       /* BBL, BBR */
 272 /**/    SOC_SINGLE("Master Playback Switch", UDA1380_DEEMP, 14, 1, 1),          /* MTM */
 273         SOC_SINGLE("ADC Playback Switch", UDA1380_DEEMP, 11, 1, 1),             /* MT2 from decimation filter */
 274         SOC_ENUM("ADC Playback De-emphasis", uda1380_deemp_enum[0]),            /* DE2 */
 275         SOC_SINGLE("PCM Playback Switch", UDA1380_DEEMP, 3, 1, 1),              /* MT1, from digital data input */
 276         SOC_ENUM("PCM Playback De-emphasis", uda1380_deemp_enum[1]),            /* DE1 */
 277         SOC_SINGLE("DAC Polarity inverting Switch", UDA1380_MIXER, 15, 1, 0),   /* DA_POL_INV */
 278         SOC_ENUM("Noise Shaper", uda1380_sel_ns_enum),                          /* SEL_NS */
 279         SOC_ENUM("Digital Mixer Signal Control", uda1380_mix_enum),             /* MIX_POS, MIX */
 280         SOC_SINGLE("Silence Detector Switch", UDA1380_MIXER, 6, 1, 0),          /* SDET_ON */
 281         SOC_ENUM("Silence Detector Setting", uda1380_sdet_enum),                /* SD_VALUE */
 282         SOC_ENUM("Oversampling Input", uda1380_os_enum),                        /* OS */
 283         SOC_DOUBLE_S8_TLV("ADC Capture Volume", UDA1380_DEC, -128, 48, dec_tlv),        /* ML_DEC, MR_DEC */
 284 /**/    SOC_SINGLE("ADC Capture Switch", UDA1380_PGA, 15, 1, 1),                /* MT_ADC */
 285         SOC_DOUBLE_TLV("Line Capture Volume", UDA1380_PGA, 0, 8, 8, 0, pga_tlv), /* PGA_GAINCTRLL, PGA_GAINCTRLR */
 286         SOC_SINGLE("ADC Polarity inverting Switch", UDA1380_ADC, 12, 1, 0),     /* ADCPOL_INV */
 287         SOC_SINGLE_TLV("Mic Capture Volume", UDA1380_ADC, 8, 15, 0, vga_tlv),   /* VGA_CTRL */
 288         SOC_SINGLE("DC Filter Bypass Switch", UDA1380_ADC, 1, 1, 0),            /* SKIP_DCFIL (before decimator) */
 289         SOC_SINGLE("DC Filter Enable Switch", UDA1380_ADC, 0, 1, 0),            /* EN_DCFIL (at output of decimator) */
 290         SOC_SINGLE("AGC Timing", UDA1380_AGC, 8, 7, 0),                 /* TODO: enum, see table 62 */
 291         SOC_SINGLE("AGC Target level", UDA1380_AGC, 2, 3, 1),                   /* AGC_LEVEL */
 292         /* -5.5, -8, -11.5, -14 dBFS */
 293         SOC_SINGLE("AGC Switch", UDA1380_AGC, 0, 1, 0),
 294 };
 295
 296 /* Input mux */
 297 static const struct snd_kcontrol_new uda1380_input_mux_control =
 298         SOC_DAPM_ENUM("Route", uda1380_input_sel_enum);
 299
 300 /* Output mux */
 301 static const struct snd_kcontrol_new uda1380_output_mux_control =
 302         SOC_DAPM_ENUM("Route", uda1380_output_sel_enum);
 303
 304 /* Capture mux */
 305 static const struct snd_kcontrol_new uda1380_capture_mux_control =
 306         SOC_DAPM_ENUM("Route", uda1380_capture_sel_enum);
 307
 308
 309 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 310         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 311                 &uda1380_input_mux_control),
 312         SND_SOC_DAPM_MUX("Output Mux", SND_SOC_NOPM, 0, 0,
 313                 &uda1380_output_mux_control),
 314         SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0,
 315                 &uda1380_capture_mux_control),
 316         SND_SOC_DAPM_PGA("Left PGA", UDA1380_PM, 3, 0, NULL, 0),
 317         SND_SOC_DAPM_PGA("Right PGA", UDA1380_PM, 1, 0, NULL, 0),
 318         SND_SOC_DAPM_PGA("Mic LNA", UDA1380_PM, 4, 0, NULL, 0),
 319         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", UDA1380_PM, 2, 0),
 320         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", UDA1380_PM, 0, 0),
 321         SND_SOC_DAPM_INPUT("VINM"),
 322         SND_SOC_DAPM_INPUT("VINL"),
 323         SND_SOC_DAPM_INPUT("VINR"),
 324         SND_SOC_DAPM_MIXER("Analog Mixer", UDA1380_PM, 6, 0, NULL, 0),
 325         SND_SOC_DAPM_OUTPUT("VOUTLHP"),
 326         SND_SOC_DAPM_OUTPUT("VOUTRHP"),
 327         SND_SOC_DAPM_OUTPUT("VOUTL"),
 328         SND_SOC_DAPM_OUTPUT("VOUTR"),
 329         SND_SOC_DAPM_DAC("DAC", "Playback", UDA1380_PM, 10, 0),
 330         SND_SOC_DAPM_PGA("HeadPhone Driver", UDA1380_PM, 13, 0, NULL, 0),
 331 };
 332
 333 static const struct snd_soc_dapm_route audio_map[] = {
 334
 335         /* output mux */
 336         {"HeadPhone Driver", NULL, "Output Mux"},
 337         {"VOUTR", NULL, "Output Mux"},
 338         {"VOUTL", NULL, "Output Mux"},
 339
 340         {"Analog Mixer", NULL, "VINR"},
 341         {"Analog Mixer", NULL, "VINL"},
 342         {"Analog Mixer", NULL, "DAC"},
 343
 344         {"Output Mux", "DAC", "DAC"},
 345         {"Output Mux", "Analog Mixer", "Analog Mixer"},
 346
 347         /* {"DAC", "Digital Mixer", "I2S" } */
 348
 349         /* headphone driver */
 350         {"VOUTLHP", NULL, "HeadPhone Driver"},
 351         {"VOUTRHP", NULL, "HeadPhone Driver"},
 352
 353         /* input mux */
 354         {"Left ADC", NULL, "Input Mux"},
 355         {"Input Mux", "Mic", "Mic LNA"},
 356         {"Input Mux", "Mic + Line R", "Mic LNA"},
 357         {"Input Mux", "Line L", "Left PGA"},
 358         {"Input Mux", "Line", "Left PGA"},
 359
 360         /* right input */
 361         {"Right ADC", "Mic + Line R", "Right PGA"},
 362         {"Right ADC", "Line", "Right PGA"},
 363
 364         /* inputs */
 365         {"Mic LNA", NULL, "VINM"},
 366         {"Left PGA", NULL, "VINL"},
 367         {"Right PGA", NULL, "VINR"},
 368 };
 369
 370 static int uda1380_add_widgets(struct snd_soc_codec *codec)
 371 {
 372         snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
 373                                   ARRAY_SIZE(uda1380_dapm_widgets));
 374
 375         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 376
 377         snd_soc_dapm_new_widgets(codec);
 378         return 0;
 379 }
 380
 381 static int uda1380_set_dai_fmt_both(struct snd_soc_dai *codec_dai,
 382                 unsigned int fmt)
 383 {
 384         struct snd_soc_codec *codec = codec_dai->codec;
 385         int iface;
 386
 387         /* set up DAI based upon fmt */
 388         iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
 389         iface &= ~(R01_SFORI_MASK | R01_SIM | R01_SFORO_MASK);
 390
 391         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 392         case SND_SOC_DAIFMT_I2S:
 393                 iface |= R01_SFORI_I2S | R01_SFORO_I2S;
 394                 break;
 395         case SND_SOC_DAIFMT_LSB:
 396                 iface |= R01_SFORI_LSB16 | R01_SFORO_LSB16;
 397                 break;
 398         case SND_SOC_DAIFMT_MSB:
 399                 iface |= R01_SFORI_MSB | R01_SFORO_MSB;
 400         }
 401
 402         /* DATAI is slave only, so in single-link mode, this has to be slave */
 403         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
 404                 return -EINVAL;
 405
 406         uda1380_write(codec, UDA1380_IFACE, iface);
 407
 408         return 0;
 409 }
 410
 411 static int uda1380_set_dai_fmt_playback(struct snd_soc_dai *codec_dai,
 412                 unsigned int fmt)
 413 {
 414         struct snd_soc_codec *codec = codec_dai->codec;
 415         int iface;
 416
 417         /* set up DAI based upon fmt */
 418         iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
 419         iface &= ~R01_SFORI_MASK;
 420
 421         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 422         case SND_SOC_DAIFMT_I2S:
 423                 iface |= R01_SFORI_I2S;
 424                 break;
 425         case SND_SOC_DAIFMT_LSB:
 426                 iface |= R01_SFORI_LSB16;
 427                 break;
 428         case SND_SOC_DAIFMT_MSB:
 429                 iface |= R01_SFORI_MSB;
 430         }
 431
 432         /* DATAI is slave only, so this has to be slave */
 433         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
 434                 return -EINVAL;
 435
 436         uda1380_write(codec, UDA1380_IFACE, iface);
 437
 438         return 0;
 439 }
 440
 441 static int uda1380_set_dai_fmt_capture(struct snd_soc_dai *codec_dai,
 442                 unsigned int fmt)
 443 {
 444         struct snd_soc_codec *codec = codec_dai->codec;
 445         int iface;
 446
 447         /* set up DAI based upon fmt */
 448         iface = uda1380_read_reg_cache(codec, UDA1380_IFACE);
 449         iface &= ~(R01_SIM | R01_SFORO_MASK);
 450
 451         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 452         case SND_SOC_DAIFMT_I2S:
 453                 iface |= R01_SFORO_I2S;
 454                 break;
 455         case SND_SOC_DAIFMT_LSB:
 456                 iface |= R01_SFORO_LSB16;
 457                 break;
 458         case SND_SOC_DAIFMT_MSB:
 459                 iface |= R01_SFORO_MSB;
 460         }
 461
 462         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBM_CFM)
 463                 iface |= R01_SIM;
 464
 465         uda1380_write(codec, UDA1380_IFACE, iface);
 466
 467         return 0;
 468 }
 469
 470 static int uda1380_trigger(struct snd_pcm_substream *substream, int cmd,
 471                 struct snd_soc_dai *dai)
 472 {
 473         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 474         struct snd_soc_device *socdev = rtd->socdev;
 475         struct snd_soc_codec *codec = socdev->card->codec;
 476         int mixer = uda1380_read_reg_cache(codec, UDA1380_MIXER);
 477
 478         switch (cmd) {
 479         case SNDRV_PCM_TRIGGER_START:
 480         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 481                 uda1380_write_reg_cache(codec, UDA1380_MIXER,
 482                                         mixer & ~R14_SILENCE);
 483                 schedule_work(&uda1380_work);
 484                 break;
 485         case SNDRV_PCM_TRIGGER_STOP:
 486         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 487                 uda1380_write_reg_cache(codec, UDA1380_MIXER,
 488                                         mixer | R14_SILENCE);
 489                 schedule_work(&uda1380_work);
 490                 break;
 491         }
 492         return 0;
 493 }
 494
 495 static int uda1380_pcm_hw_params(struct snd_pcm_substream *substream,
 496                                  struct snd_pcm_hw_params *params,
 497                                  struct snd_soc_dai *dai)
 498 {
 499         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 500         struct snd_soc_device *socdev = rtd->socdev;
 501         struct snd_soc_codec *codec = socdev->card->codec;
 502         u16 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
 503
 504         /* set WSPLL power and divider if running from this clock */
 505         if (clk & R00_DAC_CLK) {
 506                 int rate = params_rate(params);
 507                 u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
 508                 clk &= ~0x3; /* clear SEL_LOOP_DIV */
 509                 switch (rate) {
 510                 case 6250 ... 12500:
 511                         clk |= 0x0;
 512                         break;
 513                 case 12501 ... 25000:
 514                         clk |= 0x1;
 515                         break;
 516                 case 25001 ... 50000:
 517                         clk |= 0x2;
 518                         break;
 519                 case 50001 ... 100000:
 520                         clk |= 0x3;
 521                         break;
 522                 }
 523                 uda1380_write(codec, UDA1380_PM, R02_PON_PLL | pm);
 524         }
 525
 526         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 527                 clk |= R00_EN_DAC | R00_EN_INT;
 528         else
 529                 clk |= R00_EN_ADC | R00_EN_DEC;
 530
 531         uda1380_write(codec, UDA1380_CLK, clk);
 532         return 0;
 533 }
 534
 535 static void uda1380_pcm_shutdown(struct snd_pcm_substream *substream,
 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 clk = uda1380_read_reg_cache(codec, UDA1380_CLK);
 542
 543         /* shut down WSPLL power if running from this clock */
 544         if (clk & R00_DAC_CLK) {
 545                 u16 pm = uda1380_read_reg_cache(codec, UDA1380_PM);
 546                 uda1380_write(codec, UDA1380_PM, ~R02_PON_PLL & pm);
 547         }
 548
 549         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 550                 clk &= ~(R00_EN_DAC | R00_EN_INT);
 551         else
 552                 clk &= ~(R00_EN_ADC | R00_EN_DEC);
 553
 554         uda1380_write(codec, UDA1380_CLK, clk);
 555 }
 556
 557 static int uda1380_set_bias_level(struct snd_soc_codec *codec,
 558         enum snd_soc_bias_level level)
 559 {
 560         int pm = uda1380_read_reg_cache(codec, UDA1380_PM);
 561
 562         switch (level) {
 563         case SND_SOC_BIAS_ON:
 564         case SND_SOC_BIAS_PREPARE:
 565                 uda1380_write(codec, UDA1380_PM, R02_PON_BIAS | pm);
 566                 break;
 567         case SND_SOC_BIAS_STANDBY:
 568                 uda1380_write(codec, UDA1380_PM, R02_PON_BIAS);
 569                 break;
 570         case SND_SOC_BIAS_OFF:
 571                 uda1380_write(codec, UDA1380_PM, 0x0);
 572                 break;
 573         }
 574         codec->bias_level = level;
 575         return 0;
 576 }
 577
 578 #define UDA1380_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 579                        SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 580                        SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 581
 582 static struct snd_soc_dai_ops uda1380_dai_ops = {
 583         .hw_params      = uda1380_pcm_hw_params,
 584         .shutdown       = uda1380_pcm_shutdown,
 585         .trigger        = uda1380_trigger,
 586         .set_fmt        = uda1380_set_dai_fmt_both,
 587 };
 588
 589 static struct snd_soc_dai_ops uda1380_dai_ops_playback = {
 590         .hw_params      = uda1380_pcm_hw_params,
 591         .shutdown       = uda1380_pcm_shutdown,
 592         .trigger        = uda1380_trigger,
 593         .set_fmt        = uda1380_set_dai_fmt_playback,
 594 };
 595
 596 static struct snd_soc_dai_ops uda1380_dai_ops_capture = {
 597         .hw_params      = uda1380_pcm_hw_params,
 598         .shutdown       = uda1380_pcm_shutdown,
 599         .trigger        = uda1380_trigger,
 600         .set_fmt        = uda1380_set_dai_fmt_capture,
 601 };
 602
 603 struct snd_soc_dai uda1380_dai[] = {
 604 {
 605         .name = "UDA1380",
 606         .playback = {
 607                 .stream_name = "Playback",
 608                 .channels_min = 1,
 609                 .channels_max = 2,
 610                 .rates = UDA1380_RATES,
 611                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 612         .capture = {
 613                 .stream_name = "Capture",
 614                 .channels_min = 1,
 615                 .channels_max = 2,
 616                 .rates = UDA1380_RATES,
 617                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 618         .ops = &uda1380_dai_ops,
 619 },
 620 { /* playback only - dual interface */
 621         .name = "UDA1380",
 622         .playback = {
 623                 .stream_name = "Playback",
 624                 .channels_min = 1,
 625                 .channels_max = 2,
 626                 .rates = UDA1380_RATES,
 627                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 628         },
 629         .ops = &uda1380_dai_ops_playback,
 630 },
 631 { /* capture only - dual interface*/
 632         .name = "UDA1380",
 633         .capture = {
 634                 .stream_name = "Capture",
 635                 .channels_min = 1,
 636                 .channels_max = 2,
 637                 .rates = UDA1380_RATES,
 638                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 639         },
 640         .ops = &uda1380_dai_ops_capture,
 641 },
 642 };
 643 EXPORT_SYMBOL_GPL(uda1380_dai);
 644
 645 static int uda1380_suspend(struct platform_device *pdev, pm_message_t state)
 646 {
 647         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 648         struct snd_soc_codec *codec = socdev->card->codec;
 649
 650         uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
 651         return 0;
 652 }
 653
 654 static int uda1380_resume(struct platform_device *pdev)
 655 {
 656         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 657         struct snd_soc_codec *codec = socdev->card->codec;
 658         int i;
 659         u8 data[2];
 660         u16 *cache = codec->reg_cache;
 661
 662         /* Sync reg_cache with the hardware */
 663         for (i = 0; i < ARRAY_SIZE(uda1380_reg); i++) {
 664                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 665                 data[1] = cache[i] & 0x00ff;
 666                 codec->hw_write(codec->control_data, data, 2);
 667         }
 668         uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 669         uda1380_set_bias_level(codec, codec->suspend_bias_level);
 670         return 0;
 671 }
 672
 673 /*
 674  * initialise the UDA1380 driver
 675  * register mixer and dsp interfaces with the kernel
 676  */
 677 static int uda1380_init(struct snd_soc_device *socdev, int dac_clk)
 678 {
 679         struct snd_soc_codec *codec = socdev->card->codec;
 680         int ret = 0;
 681
 682         codec->name = "UDA1380";
 683         codec->owner = THIS_MODULE;
 684         codec->read = uda1380_read_reg_cache;
 685         codec->write = uda1380_write;
 686         codec->set_bias_level = uda1380_set_bias_level;
 687         codec->dai = uda1380_dai;
 688         codec->num_dai = ARRAY_SIZE(uda1380_dai);
 689         codec->reg_cache = kmemdup(uda1380_reg, sizeof(uda1380_reg),
 690                                    GFP_KERNEL);
 691         if (codec->reg_cache == NULL)
 692                 return -ENOMEM;
 693         codec->reg_cache_size = ARRAY_SIZE(uda1380_reg);
 694         codec->reg_cache_step = 1;
 695         uda1380_reset(codec);
 696
 697         uda1380_codec = codec;
 698         INIT_WORK(&uda1380_work, uda1380_flush_work);
 699
 700         /* register pcms */
 701         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 702         if (ret < 0) {
 703                 pr_err("uda1380: failed to create pcms\n");
 704                 goto pcm_err;
 705         }
 706
 707         /* power on device */
 708         uda1380_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 709         /* set clock input */
 710         switch (dac_clk) {
 711         case UDA1380_DAC_CLK_SYSCLK:
 712                 uda1380_write(codec, UDA1380_CLK, 0);
 713                 break;
 714         case UDA1380_DAC_CLK_WSPLL:
 715                 uda1380_write(codec, UDA1380_CLK, R00_DAC_CLK);
 716                 break;
 717         }
 718
 719         /* uda1380 init */
 720         snd_soc_add_controls(codec, uda1380_snd_controls,
 721                                 ARRAY_SIZE(uda1380_snd_controls));
 722         uda1380_add_widgets(codec);
 723         ret = snd_soc_init_card(socdev);
 724         if (ret < 0) {
 725                 pr_err("uda1380: failed to register card\n");
 726                 goto card_err;
 727         }
 728
 729         return ret;
 730
 731 card_err:
 732         snd_soc_free_pcms(socdev);
 733         snd_soc_dapm_free(socdev);
 734 pcm_err:
 735         kfree(codec->reg_cache);
 736         return ret;
 737 }
 738
 739 static struct snd_soc_device *uda1380_socdev;
 740
 741 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 742
 743 static int uda1380_i2c_probe(struct i2c_client *i2c,
 744                              const struct i2c_device_id *id)
 745 {
 746         struct snd_soc_device *socdev = uda1380_socdev;
 747         struct uda1380_setup_data *setup = socdev->codec_data;
 748         struct snd_soc_codec *codec = socdev->card->codec;
 749         int ret;
 750
 751         i2c_set_clientdata(i2c, codec);
 752         codec->control_data = i2c;
 753
 754         ret = uda1380_init(socdev, setup->dac_clk);
 755         if (ret < 0)
 756                 pr_err("uda1380: failed to initialise UDA1380\n");
 757
 758         return ret;
 759 }
 760
 761 static int uda1380_i2c_remove(struct i2c_client *client)
 762 {
 763         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 764         kfree(codec->reg_cache);
 765         return 0;
 766 }
 767
 768 static const struct i2c_device_id uda1380_i2c_id[] = {
 769         { "uda1380", 0 },
 770         { }
 771 };
 772 MODULE_DEVICE_TABLE(i2c, uda1380_i2c_id);
 773
 774 static struct i2c_driver uda1380_i2c_driver = {
 775         .driver = {
 776                 .name =  "UDA1380 I2C Codec",
 777                 .owner = THIS_MODULE,
 778         },
 779         .probe =    uda1380_i2c_probe,
 780         .remove =   uda1380_i2c_remove,
 781         .id_table = uda1380_i2c_id,
 782 };
 783
 784 static int uda1380_add_i2c_device(struct platform_device *pdev,
 785                                   const struct uda1380_setup_data *setup)
 786 {
 787         struct i2c_board_info info;
 788         struct i2c_adapter *adapter;
 789         struct i2c_client *client;
 790         int ret;
 791
 792         ret = i2c_add_driver(&uda1380_i2c_driver);
 793         if (ret != 0) {
 794                 dev_err(&pdev->dev, "can't add i2c driver\n");
 795                 return ret;
 796         }
 797
 798         memset(&info, 0, sizeof(struct i2c_board_info));
 799         info.addr = setup->i2c_address;
 800         strlcpy(info.type, "uda1380", I2C_NAME_SIZE);
 801
 802         adapter = i2c_get_adapter(setup->i2c_bus);
 803         if (!adapter) {
 804                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 805                         setup->i2c_bus);
 806                 goto err_driver;
 807         }
 808
 809         client = i2c_new_device(adapter, &info);
 810         i2c_put_adapter(adapter);
 811         if (!client) {
 812                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 813                         (unsigned int)info.addr);
 814                 goto err_driver;
 815         }
 816
 817         return 0;
 818
 819 err_driver:
 820         i2c_del_driver(&uda1380_i2c_driver);
 821         return -ENODEV;
 822 }
 823 #endif
 824
 825 static int uda1380_probe(struct platform_device *pdev)
 826 {
 827         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 828         struct uda1380_setup_data *setup;
 829         struct snd_soc_codec *codec;
 830         int ret;
 831
 832         setup = socdev->codec_data;
 833         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 834         if (codec == NULL)
 835                 return -ENOMEM;
 836
 837         socdev->card->codec = codec;
 838         mutex_init(&codec->mutex);
 839         INIT_LIST_HEAD(&codec->dapm_widgets);
 840         INIT_LIST_HEAD(&codec->dapm_paths);
 841
 842         uda1380_socdev = socdev;
 843         ret = -ENODEV;
 844
 845 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 846         if (setup->i2c_address) {
 847                 codec->hw_write = (hw_write_t)i2c_master_send;
 848                 ret = uda1380_add_i2c_device(pdev, setup);
 849         }
 850 #endif
 851
 852         if (ret != 0)
 853                 kfree(codec);
 854         return ret;
 855 }
 856
 857 /* power down chip */
 858 static int uda1380_remove(struct platform_device *pdev)
 859 {
 860         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 861         struct snd_soc_codec *codec = socdev->card->codec;
 862
 863         if (codec->control_data)
 864                 uda1380_set_bias_level(codec, SND_SOC_BIAS_OFF);
 865
 866         snd_soc_free_pcms(socdev);
 867         snd_soc_dapm_free(socdev);
 868 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 869         i2c_unregister_device(codec->control_data);
 870         i2c_del_driver(&uda1380_i2c_driver);
 871 #endif
 872         kfree(codec);
 873
 874         return 0;
 875 }
 876
 877 struct snd_soc_codec_device soc_codec_dev_uda1380 = {
 878         .probe =        uda1380_probe,
 879         .remove =       uda1380_remove,
 880         .suspend =      uda1380_suspend,
 881         .resume =       uda1380_resume,
 882 };
 883 EXPORT_SYMBOL_GPL(soc_codec_dev_uda1380);
 884
 885 static int __init uda1380_modinit(void)
 886 {
 887         return snd_soc_register_dais(uda1380_dai, ARRAY_SIZE(uda1380_dai));
 888 }
 889 module_init(uda1380_modinit);
 890
 891 static void __exit uda1380_exit(void)
 892 {
 893         snd_soc_unregister_dais(uda1380_dai, ARRAY_SIZE(uda1380_dai));
 894 }
 895 module_exit(uda1380_exit);
 896
 897 MODULE_AUTHOR("Giorgio Padrin");
 898 MODULE_DESCRIPTION("Audio support for codec Philips UDA1380");
 899 MODULE_LICENSE("GPL");