LXR linux/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
  39static struct work_struct uda1380_work;
  40static struct snd_soc_codec *uda1380_codec;
  41
  42/*
  43 * uda1380 register cache
  44 */
  45static 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
  57static unsigned long uda1380_cache_dirty;
  58
  59/*
  60 * read uda1380 register cache
  61 */
  62static 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 */
  76static 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 */
  91static 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
 132static 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 */
 147static const char *uda1380_deemp[] = {
 148        "None",
 149        "32kHz",
 150        "44.1kHz",
 151        "48kHz",
 152        "96kHz",
 153};
 154static const char *uda1380_input_sel[] = {
 155        "Line",
 156        "Mic + Line R",
 157        "Line L",
 158        "Mic",
 159};
 160static const char *uda1380_output_sel[] = {
 161        "DAC",
 162        "Analog Mixer",
 163};
 164static const char *uda1380_spf_mode[] = {
 165        "Flat",
 166        "Minimum1",
 167        "Minimum2",
 168        "Maximum"
 169};
 170static const char *uda1380_capture_sel[] = {
 171        "ADC",
 172        "Digital Mixer"
 173};
 174static const char *uda1380_sel_ns[] = {
 175        "3rd-order",
 176        "5th-order"
 177};
 178static const char *uda1380_mix_control[] = {
 179        "off",
 180        "PCM only",
 181        "before sound processing",
 182        "after sound processing"
 183};
 184static const char *uda1380_sdet_setting[] = {
 185        "3200",
 186        "4800",
 187        "9600",
 188        "19200"
 189};
 190static const char *uda1380_os_setting[] = {
 191        "single-speed",
 192        "double-speed (no mixing)",
 193        "quad-speed (no mixing)"
 194};
 195
 196static 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};
 200static const struct soc_enum uda1380_input_sel_enum =
 201        SOC_ENUM_SINGLE(UDA1380_ADC, 2, 4, uda1380_input_sel);          /* SEL_MIC, SEL_LNA */
 202static const struct soc_enum uda1380_output_sel_enum =
 203        SOC_ENUM_SINGLE(UDA1380_PM, 7, 2, uda1380_output_sel);          /* R02_EN_AVC */
 204static const struct soc_enum uda1380_spf_enum =
 205        SOC_ENUM_SINGLE(UDA1380_MODE, 14, 4, uda1380_spf_mode);         /* M */
 206static const struct soc_enum uda1380_capture_sel_enum =
 207        SOC_ENUM_SINGLE(UDA1380_IFACE, 6, 2, uda1380_capture_sel);      /* SEL_SOURCE */
 208static const struct soc_enum uda1380_sel_ns_enum =
 209        SOC_ENUM_SINGLE(UDA1380_MIXER, 14, 2, uda1380_sel_ns);          /* SEL_NS */
 210static const struct soc_enum uda1380_mix_enum =
 211        SOC_ENUM_SINGLE(UDA1380_MIXER, 12, 4, uda1380_mix_control);     /* MIX, MIX_POS */
 212static const struct soc_enum uda1380_sdet_enum =
 213        SOC_ENUM_SINGLE(UDA1380_MIXER, 4, 4, uda1380_sdet_setting);     /* SD_VALUE */
 214static 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 */
 220static 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 */
 227static 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 */
 240static 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 */
 249static 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) */
 253static DECLARE_TLV_DB_SCALE(bb_tlv, 0, 200, 0);
 254
 255/* from -63 to 24 dB in 0.5 dB steps (-128...48) */
 256static DECLARE_TLV_DB_SCALE(dec_tlv, -6400, 50, 1);
 257
 258/* from 0 to 24 dB in 3 dB steps */
 259static DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
 260
 261/* from 0 to 30 dB in 2 dB steps */
 262static DECLARE_TLV_DB_SCALE(vga_tlv, 0, 200, 0);
 263
 264static 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 */
 297static const struct snd_kcontrol_new uda1380_input_mux_control =
 298        SOC_DAPM_ENUM("Route", uda1380_input_sel_enum);
 299
 300/* Output mux */
 301static const struct snd_kcontrol_new uda1380_output_mux_control =
 302        SOC_DAPM_ENUM("Route", uda1380_output_sel_enum);
 303
 304/* Capture mux */
 305static const struct snd_kcontrol_new uda1380_capture_mux_control =
 306        SOC_DAPM_ENUM("Route", uda1380_capture_sel_enum);
 307
 308
 309static 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
 333static 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
 370static 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
 381static 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
 411static 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
 441static 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
 470static 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
 495static 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
 535static 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
 557static 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
 582static 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
 589static 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
 596static 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
 603struct 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};
 643EXPORT_SYMBOL_GPL(uda1380_dai);
 644
 645static 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
 654static 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 */
 677static 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
 731card_err:
 732        snd_soc_free_pcms(socdev);
 733        snd_soc_dapm_free(socdev);
 734pcm_err:
 735        kfree(codec->reg_cache);
 736        return ret;
 737}
 738
 739static struct snd_soc_device *uda1380_socdev;
 740
 741#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 742
 743static 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
 761static 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
 768static const struct i2c_device_id uda1380_i2c_id[] = {
 769        { "uda1380", 0 },
 770        { }
 771};
 772MODULE_DEVICE_TABLE(i2c, uda1380_i2c_id);
 773
 774static 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
 784static 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
 819err_driver:
 820        i2c_del_driver(&uda1380_i2c_driver);
 821        return -ENODEV;
 822}
 823#endif
 824
 825static 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 */
 858static 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
 877struct 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};
 883EXPORT_SYMBOL_GPL(soc_codec_dev_uda1380);
 884
 885static int __init uda1380_modinit(void)
 886{
 887        return snd_soc_register_dais(uda1380_dai, ARRAY_SIZE(uda1380_dai));
 888}
 889module_init(uda1380_modinit);
 890
 891static void __exit uda1380_exit(void)
 892{
 893        snd_soc_unregister_dais(uda1380_dai, ARRAY_SIZE(uda1380_dai));
 894}
 895module_exit(uda1380_exit);
 896
 897MODULE_AUTHOR("Giorgio Padrin");
 898MODULE_DESCRIPTION("Audio support for codec Philips UDA1380");
 899MODULE_LICENSE("GPL");
 900