sound/soc/codecs/sirf-audio-codec.c

   1 /*
   2  * SiRF audio codec driver
   3  *
   4  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
   5  *
   6  * Licensed under GPLv2 or later.
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/pm_runtime.h>
  12 #include <linux/of.h>
  13 #include <linux/of_device.h>
  14 #include <linux/clk.h>
  15 #include <linux/delay.h>
  16 #include <linux/io.h>
  17 #include <linux/regmap.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/initval.h>
  22 #include <sound/tlv.h>
  23 #include <sound/soc.h>
  24 #include <sound/dmaengine_pcm.h>
  25
  26 #include "sirf-audio-codec.h"
  27
  28 struct sirf_audio_codec {
  29         struct clk *clk;
  30         struct regmap *regmap;
  31         u32 reg_ctrl0, reg_ctrl1;
  32 };
  33
  34 static const char * const input_mode_mux[] = {"Single-ended",
  35         "Differential"};
  36
  37 static const struct soc_enum input_mode_mux_enum =
  38         SOC_ENUM_SINGLE(AUDIO_IC_CODEC_CTRL1, 4, 2, input_mode_mux);
  39
  40 static const struct snd_kcontrol_new sirf_audio_codec_input_mode_control =
  41         SOC_DAPM_ENUM("Route", input_mode_mux_enum);
  42
  43 static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -12400, 100, 0);
  44 static const DECLARE_TLV_DB_SCALE(capture_vol_tlv_prima2, 500, 100, 0);
  45 static const DECLARE_TLV_DB_RANGE(capture_vol_tlv_atlas6,
  46         0, 7, TLV_DB_SCALE_ITEM(-100, 100, 0),
  47         0x22, 0x3F, TLV_DB_SCALE_ITEM(700, 100, 0),
  48 );
  49
  50 static struct snd_kcontrol_new volume_controls_atlas6[] = {
  51         SOC_DOUBLE_TLV("Playback Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
  52                         0x7F, 0, playback_vol_tlv),
  53         SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 16, 10,
  54                         0x3F, 0, capture_vol_tlv_atlas6),
  55 };
  56
  57 static struct snd_kcontrol_new volume_controls_prima2[] = {
  58         SOC_DOUBLE_TLV("Speaker Volume", AUDIO_IC_CODEC_CTRL0, 21, 14,
  59                         0x7F, 0, playback_vol_tlv),
  60         SOC_DOUBLE_TLV("Capture Volume", AUDIO_IC_CODEC_CTRL1, 15, 10,
  61                         0x1F, 0, capture_vol_tlv_prima2),
  62 };
  63
  64 static struct snd_kcontrol_new left_input_path_controls[] = {
  65         SOC_DAPM_SINGLE("Line Left Switch", AUDIO_IC_CODEC_CTRL1, 6, 1, 0),
  66         SOC_DAPM_SINGLE("Mic Left Switch", AUDIO_IC_CODEC_CTRL1, 3, 1, 0),
  67 };
  68
  69 static struct snd_kcontrol_new right_input_path_controls[] = {
  70         SOC_DAPM_SINGLE("Line Right Switch", AUDIO_IC_CODEC_CTRL1, 5, 1, 0),
  71         SOC_DAPM_SINGLE("Mic Right Switch", AUDIO_IC_CODEC_CTRL1, 2, 1, 0),
  72 };
  73
  74 static struct snd_kcontrol_new left_dac_to_hp_left_amp_switch_control =
  75         SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 9, 1, 0);
  76
  77 static struct snd_kcontrol_new left_dac_to_hp_right_amp_switch_control =
  78         SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 8, 1, 0);
  79
  80 static struct snd_kcontrol_new right_dac_to_hp_left_amp_switch_control =
  81         SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 7, 1, 0);
  82
  83 static struct snd_kcontrol_new right_dac_to_hp_right_amp_switch_control =
  84         SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 6, 1, 0);
  85
  86 static struct snd_kcontrol_new left_dac_to_speaker_lineout_switch_control =
  87         SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 11, 1, 0);
  88
  89 static struct snd_kcontrol_new right_dac_to_speaker_lineout_switch_control =
  90         SOC_DAPM_SINGLE("Switch", AUDIO_IC_CODEC_CTRL0, 10, 1, 0);
  91
  92 /* After enable adc, Delay 200ms to avoid pop noise */
  93 static int adc_enable_delay_event(struct snd_soc_dapm_widget *w,
  94                 struct snd_kcontrol *kcontrol, int event)
  95 {
  96         switch (event) {
  97         case SND_SOC_DAPM_POST_PMU:
  98                 msleep(200);
  99                 break;
 100         default:
 101                 break;
 102         }
 103
 104         return 0;
 105 }
 106
 107 static void enable_and_reset_codec(struct regmap *regmap,
 108                 u32 codec_enable_bits, u32 codec_reset_bits)
 109 {
 110         regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
 111                         codec_enable_bits | codec_reset_bits,
 112                         codec_enable_bits);
 113         msleep(20);
 114         regmap_update_bits(regmap, AUDIO_IC_CODEC_CTRL1,
 115                         codec_reset_bits, codec_reset_bits);
 116 }
 117
 118 static int atlas6_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
 119                 struct snd_kcontrol *kcontrol, int event)
 120 {
 121 #define ATLAS6_CODEC_ENABLE_BITS (1 << 29)
 122 #define ATLAS6_CODEC_RESET_BITS (1 << 28)
 123         struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(w->codec->dev);
 124         switch (event) {
 125         case SND_SOC_DAPM_PRE_PMU:
 126                 enable_and_reset_codec(sirf_audio_codec->regmap,
 127                         ATLAS6_CODEC_ENABLE_BITS, ATLAS6_CODEC_RESET_BITS);
 128                 break;
 129         case SND_SOC_DAPM_POST_PMD:
 130                 regmap_update_bits(sirf_audio_codec->regmap,
 131                         AUDIO_IC_CODEC_CTRL1, ATLAS6_CODEC_ENABLE_BITS, 0);
 132                 break;
 133         default:
 134                 break;
 135         }
 136
 137         return 0;
 138 }
 139
 140 static int prima2_codec_enable_and_reset_event(struct snd_soc_dapm_widget *w,
 141                 struct snd_kcontrol *kcontrol, int event)
 142 {
 143 #define PRIMA2_CODEC_ENABLE_BITS (1 << 27)
 144 #define PRIMA2_CODEC_RESET_BITS (1 << 26)
 145         struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(w->codec->dev);
 146         switch (event) {
 147         case SND_SOC_DAPM_POST_PMU:
 148                 enable_and_reset_codec(sirf_audio_codec->regmap,
 149                         PRIMA2_CODEC_ENABLE_BITS, PRIMA2_CODEC_RESET_BITS);
 150                 break;
 151         case SND_SOC_DAPM_POST_PMD:
 152                 regmap_update_bits(sirf_audio_codec->regmap,
 153                         AUDIO_IC_CODEC_CTRL1, PRIMA2_CODEC_ENABLE_BITS, 0);
 154                 break;
 155         default:
 156                 break;
 157         }
 158
 159         return 0;
 160 }
 161
 162 static const struct snd_soc_dapm_widget atlas6_output_driver_dapm_widgets[] = {
 163         SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
 164                         25, 0, NULL, 0),
 165         SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
 166                         26, 0, NULL, 0),
 167         SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
 168                         27, 0, NULL, 0),
 169 };
 170
 171 static const struct snd_soc_dapm_widget prima2_output_driver_dapm_widgets[] = {
 172         SND_SOC_DAPM_OUT_DRV("HP Left Driver", AUDIO_IC_CODEC_CTRL1,
 173                         23, 0, NULL, 0),
 174         SND_SOC_DAPM_OUT_DRV("HP Right Driver", AUDIO_IC_CODEC_CTRL1,
 175                         24, 0, NULL, 0),
 176         SND_SOC_DAPM_OUT_DRV("Speaker Driver", AUDIO_IC_CODEC_CTRL1,
 177                         25, 0, NULL, 0),
 178 };
 179
 180 static const struct snd_soc_dapm_widget atlas6_codec_clock_dapm_widget =
 181         SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
 182                         atlas6_codec_enable_and_reset_event,
 183                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
 184
 185 static const struct snd_soc_dapm_widget prima2_codec_clock_dapm_widget =
 186         SND_SOC_DAPM_SUPPLY("codecclk", SND_SOC_NOPM, 0, 0,
 187                         prima2_codec_enable_and_reset_event,
 188                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
 189
 190 static const struct snd_soc_dapm_widget sirf_audio_codec_dapm_widgets[] = {
 191         SND_SOC_DAPM_DAC("DAC left", NULL, AUDIO_IC_CODEC_CTRL0, 1, 0),
 192         SND_SOC_DAPM_DAC("DAC right", NULL, AUDIO_IC_CODEC_CTRL0, 0, 0),
 193         SND_SOC_DAPM_SWITCH("Left dac to hp left amp", SND_SOC_NOPM, 0, 0,
 194                         &left_dac_to_hp_left_amp_switch_control),
 195         SND_SOC_DAPM_SWITCH("Left dac to hp right amp", SND_SOC_NOPM, 0, 0,
 196                         &left_dac_to_hp_right_amp_switch_control),
 197         SND_SOC_DAPM_SWITCH("Right dac to hp left amp", SND_SOC_NOPM, 0, 0,
 198                         &right_dac_to_hp_left_amp_switch_control),
 199         SND_SOC_DAPM_SWITCH("Right dac to hp right amp", SND_SOC_NOPM, 0, 0,
 200                         &right_dac_to_hp_right_amp_switch_control),
 201         SND_SOC_DAPM_OUT_DRV("HP amp left driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
 202                         NULL, 0),
 203         SND_SOC_DAPM_OUT_DRV("HP amp right driver", AUDIO_IC_CODEC_CTRL0, 3, 0,
 204                         NULL, 0),
 205
 206         SND_SOC_DAPM_SWITCH("Left dac to speaker lineout", SND_SOC_NOPM, 0, 0,
 207                         &left_dac_to_speaker_lineout_switch_control),
 208         SND_SOC_DAPM_SWITCH("Right dac to speaker lineout", SND_SOC_NOPM, 0, 0,
 209                         &right_dac_to_speaker_lineout_switch_control),
 210         SND_SOC_DAPM_OUT_DRV("Speaker amp driver", AUDIO_IC_CODEC_CTRL0, 4, 0,
 211                         NULL, 0),
 212
 213         SND_SOC_DAPM_OUTPUT("HPOUTL"),
 214         SND_SOC_DAPM_OUTPUT("HPOUTR"),
 215         SND_SOC_DAPM_OUTPUT("SPKOUT"),
 216
 217         SND_SOC_DAPM_ADC_E("ADC left", NULL, AUDIO_IC_CODEC_CTRL1, 8, 0,
 218                         adc_enable_delay_event, SND_SOC_DAPM_POST_PMU),
 219         SND_SOC_DAPM_ADC_E("ADC right", NULL, AUDIO_IC_CODEC_CTRL1, 7, 0,
 220                         adc_enable_delay_event, SND_SOC_DAPM_POST_PMU),
 221         SND_SOC_DAPM_MIXER("Left PGA mixer", AUDIO_IC_CODEC_CTRL1, 1, 0,
 222                 &left_input_path_controls[0],
 223                 ARRAY_SIZE(left_input_path_controls)),
 224         SND_SOC_DAPM_MIXER("Right PGA mixer", AUDIO_IC_CODEC_CTRL1, 0, 0,
 225                 &right_input_path_controls[0],
 226                 ARRAY_SIZE(right_input_path_controls)),
 227
 228         SND_SOC_DAPM_MUX("Mic input mode mux", SND_SOC_NOPM, 0, 0,
 229                         &sirf_audio_codec_input_mode_control),
 230         SND_SOC_DAPM_MICBIAS("Mic Bias", AUDIO_IC_CODEC_PWR, 3, 0),
 231         SND_SOC_DAPM_INPUT("MICIN1"),
 232         SND_SOC_DAPM_INPUT("MICIN2"),
 233         SND_SOC_DAPM_INPUT("LINEIN1"),
 234         SND_SOC_DAPM_INPUT("LINEIN2"),
 235
 236         SND_SOC_DAPM_SUPPLY("HSL Phase Opposite", AUDIO_IC_CODEC_CTRL0,
 237                         30, 0, NULL, 0),
 238 };
 239
 240 static const struct snd_soc_dapm_route sirf_audio_codec_map[] = {
 241         {"SPKOUT", NULL, "Speaker Driver"},
 242         {"Speaker Driver", NULL, "Speaker amp driver"},
 243         {"Speaker amp driver", NULL, "Left dac to speaker lineout"},
 244         {"Speaker amp driver", NULL, "Right dac to speaker lineout"},
 245         {"Left dac to speaker lineout", "Switch", "DAC left"},
 246         {"Right dac to speaker lineout", "Switch", "DAC right"},
 247         {"HPOUTL", NULL, "HP Left Driver"},
 248         {"HPOUTR", NULL, "HP Right Driver"},
 249         {"HP Left Driver", NULL, "HP amp left driver"},
 250         {"HP Right Driver", NULL, "HP amp right driver"},
 251         {"HP amp left driver", NULL, "Right dac to hp left amp"},
 252         {"HP amp right driver", NULL , "Right dac to hp right amp"},
 253         {"HP amp left driver", NULL, "Left dac to hp left amp"},
 254         {"HP amp right driver", NULL , "Right dac to hp right amp"},
 255         {"Right dac to hp left amp", "Switch", "DAC left"},
 256         {"Right dac to hp right amp", "Switch", "DAC right"},
 257         {"Left dac to hp left amp", "Switch", "DAC left"},
 258         {"Left dac to hp right amp", "Switch", "DAC right"},
 259         {"DAC left", NULL, "codecclk"},
 260         {"DAC right", NULL, "codecclk"},
 261         {"DAC left", NULL, "Playback"},
 262         {"DAC right", NULL, "Playback"},
 263         {"DAC left", NULL, "HSL Phase Opposite"},
 264         {"DAC right", NULL, "HSL Phase Opposite"},
 265
 266         {"Capture", NULL, "ADC left"},
 267         {"Capture", NULL, "ADC right"},
 268         {"ADC left", NULL, "codecclk"},
 269         {"ADC right", NULL, "codecclk"},
 270         {"ADC left", NULL, "Left PGA mixer"},
 271         {"ADC right", NULL, "Right PGA mixer"},
 272         {"Left PGA mixer", "Line Left Switch", "LINEIN2"},
 273         {"Right PGA mixer", "Line Right Switch", "LINEIN1"},
 274         {"Left PGA mixer", "Mic Left Switch", "MICIN2"},
 275         {"Right PGA mixer", "Mic Right Switch", "Mic input mode mux"},
 276         {"Mic input mode mux", "Single-ended", "MICIN1"},
 277         {"Mic input mode mux", "Differential", "MICIN1"},
 278 };
 279
 280 static void sirf_audio_codec_tx_enable(struct sirf_audio_codec *sirf_audio_codec)
 281 {
 282         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
 283                 AUDIO_FIFO_RESET, AUDIO_FIFO_RESET);
 284         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
 285                 AUDIO_FIFO_RESET, ~AUDIO_FIFO_RESET);
 286         regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_INT_MSK, 0);
 287         regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0);
 288         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP,
 289                 AUDIO_FIFO_START, AUDIO_FIFO_START);
 290         regmap_update_bits(sirf_audio_codec->regmap,
 291                 AUDIO_PORT_IC_CODEC_TX_CTRL, IC_TX_ENABLE, IC_TX_ENABLE);
 292 }
 293
 294 static void sirf_audio_codec_tx_disable(struct sirf_audio_codec *sirf_audio_codec)
 295 {
 296         regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0);
 297         regmap_update_bits(sirf_audio_codec->regmap,
 298                 AUDIO_PORT_IC_CODEC_TX_CTRL, IC_TX_ENABLE, ~IC_TX_ENABLE);
 299 }
 300
 301 static void sirf_audio_codec_rx_enable(struct sirf_audio_codec *sirf_audio_codec,
 302         int channels)
 303 {
 304         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
 305                 AUDIO_FIFO_RESET, AUDIO_FIFO_RESET);
 306         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
 307                 AUDIO_FIFO_RESET, ~AUDIO_FIFO_RESET);
 308         regmap_write(sirf_audio_codec->regmap,
 309                 AUDIO_PORT_IC_RXFIFO_INT_MSK, 0);
 310         regmap_write(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP, 0);
 311         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_PORT_IC_RXFIFO_OP,
 312                 AUDIO_FIFO_START, AUDIO_FIFO_START);
 313         if (channels == 1)
 314                 regmap_update_bits(sirf_audio_codec->regmap,
 315                         AUDIO_PORT_IC_CODEC_RX_CTRL,
 316                         IC_RX_ENABLE_MONO, IC_RX_ENABLE_MONO);
 317         else
 318                 regmap_update_bits(sirf_audio_codec->regmap,
 319                         AUDIO_PORT_IC_CODEC_RX_CTRL,
 320                         IC_RX_ENABLE_STEREO, IC_RX_ENABLE_STEREO);
 321 }
 322
 323 static void sirf_audio_codec_rx_disable(struct sirf_audio_codec *sirf_audio_codec)
 324 {
 325         regmap_update_bits(sirf_audio_codec->regmap,
 326                         AUDIO_PORT_IC_CODEC_RX_CTRL,
 327                         IC_RX_ENABLE_STEREO, ~IC_RX_ENABLE_STEREO);
 328 }
 329
 330 static int sirf_audio_codec_trigger(struct snd_pcm_substream *substream,
 331                 int cmd,
 332                 struct snd_soc_dai *dai)
 333 {
 334         struct snd_soc_codec *codec = dai->codec;
 335         struct sirf_audio_codec *sirf_audio_codec = snd_soc_codec_get_drvdata(codec);
 336         int playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 337
 338         /*
 339          * This is a workaround, When stop playback,
 340          * need disable HP amp, avoid the current noise.
 341          */
 342         switch (cmd) {
 343         case SNDRV_PCM_TRIGGER_STOP:
 344         case SNDRV_PCM_TRIGGER_SUSPEND:
 345         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 346                 if (playback) {
 347                         snd_soc_update_bits(codec, AUDIO_IC_CODEC_CTRL0,
 348                                 IC_HSLEN | IC_HSREN, 0);
 349                         sirf_audio_codec_tx_disable(sirf_audio_codec);
 350                 } else
 351                         sirf_audio_codec_rx_disable(sirf_audio_codec);
 352                 break;
 353         case SNDRV_PCM_TRIGGER_START:
 354         case SNDRV_PCM_TRIGGER_RESUME:
 355         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 356                 if (playback) {
 357                         sirf_audio_codec_tx_enable(sirf_audio_codec);
 358                         snd_soc_update_bits(codec, AUDIO_IC_CODEC_CTRL0,
 359                                 IC_HSLEN | IC_HSREN, IC_HSLEN | IC_HSREN);
 360                 } else
 361                         sirf_audio_codec_rx_enable(sirf_audio_codec,
 362                                 substream->runtime->channels);
 363                 break;
 364         default:
 365                 return -EINVAL;
 366         }
 367
 368         return 0;
 369 }
 370
 371 struct snd_soc_dai_ops sirf_audio_codec_dai_ops = {
 372         .trigger = sirf_audio_codec_trigger,
 373 };
 374
 375 struct snd_soc_dai_driver sirf_audio_codec_dai = {
 376         .name = "sirf-audio-codec",
 377         .playback = {
 378                 .stream_name = "Playback",
 379                 .channels_min = 2,
 380                 .channels_max = 2,
 381                 .rates = SNDRV_PCM_RATE_48000,
 382                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 383         },
 384         .capture = {
 385                 .stream_name = "Capture",
 386                 .channels_min = 1,
 387                 .channels_max = 2,
 388                 .rates = SNDRV_PCM_RATE_48000,
 389                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 390         },
 391         .ops = &sirf_audio_codec_dai_ops,
 392 };
 393
 394 static int sirf_audio_codec_probe(struct snd_soc_codec *codec)
 395 {
 396         struct snd_soc_dapm_context *dapm = &codec->dapm;
 397
 398         pm_runtime_enable(codec->dev);
 399
 400         if (of_device_is_compatible(codec->dev->of_node, "sirf,prima2-audio-codec")) {
 401                 snd_soc_dapm_new_controls(dapm,
 402                         prima2_output_driver_dapm_widgets,
 403                         ARRAY_SIZE(prima2_output_driver_dapm_widgets));
 404                 snd_soc_dapm_new_controls(dapm,
 405                         &prima2_codec_clock_dapm_widget, 1);
 406                 return snd_soc_add_codec_controls(codec,
 407                         volume_controls_prima2,
 408                         ARRAY_SIZE(volume_controls_prima2));
 409         }
 410         if (of_device_is_compatible(codec->dev->of_node, "sirf,atlas6-audio-codec")) {
 411                 snd_soc_dapm_new_controls(dapm,
 412                         atlas6_output_driver_dapm_widgets,
 413                         ARRAY_SIZE(atlas6_output_driver_dapm_widgets));
 414                 snd_soc_dapm_new_controls(dapm,
 415                         &atlas6_codec_clock_dapm_widget, 1);
 416                 return snd_soc_add_codec_controls(codec,
 417                         volume_controls_atlas6,
 418                         ARRAY_SIZE(volume_controls_atlas6));
 419         }
 420
 421         return -EINVAL;
 422 }
 423
 424 static int sirf_audio_codec_remove(struct snd_soc_codec *codec)
 425 {
 426         pm_runtime_disable(codec->dev);
 427         return 0;
 428 }
 429
 430 static struct snd_soc_codec_driver soc_codec_device_sirf_audio_codec = {
 431         .probe = sirf_audio_codec_probe,
 432         .remove = sirf_audio_codec_remove,
 433         .dapm_widgets = sirf_audio_codec_dapm_widgets,
 434         .num_dapm_widgets = ARRAY_SIZE(sirf_audio_codec_dapm_widgets),
 435         .dapm_routes = sirf_audio_codec_map,
 436         .num_dapm_routes = ARRAY_SIZE(sirf_audio_codec_map),
 437         .idle_bias_off = true,
 438 };
 439
 440 static const struct of_device_id sirf_audio_codec_of_match[] = {
 441         { .compatible = "sirf,prima2-audio-codec" },
 442         { .compatible = "sirf,atlas6-audio-codec" },
 443         {}
 444 };
 445 MODULE_DEVICE_TABLE(of, sirf_audio_codec_of_match);
 446
 447 static const struct regmap_config sirf_audio_codec_regmap_config = {
 448         .reg_bits = 32,
 449         .reg_stride = 4,
 450         .val_bits = 32,
 451         .max_register = AUDIO_PORT_IC_RXFIFO_INT_MSK,
 452         .cache_type = REGCACHE_NONE,
 453 };
 454
 455 static int sirf_audio_codec_driver_probe(struct platform_device *pdev)
 456 {
 457         int ret;
 458         struct sirf_audio_codec *sirf_audio_codec;
 459         void __iomem *base;
 460         struct resource *mem_res;
 461         const struct of_device_id *match;
 462
 463         match = of_match_node(sirf_audio_codec_of_match, pdev->dev.of_node);
 464
 465         sirf_audio_codec = devm_kzalloc(&pdev->dev,
 466                 sizeof(struct sirf_audio_codec), GFP_KERNEL);
 467         if (!sirf_audio_codec)
 468                 return -ENOMEM;
 469
 470         platform_set_drvdata(pdev, sirf_audio_codec);
 471
 472         mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 473         base = devm_ioremap_resource(&pdev->dev, mem_res);
 474         if (IS_ERR(base))
 475                 return PTR_ERR(base);
 476
 477         sirf_audio_codec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
 478                                             &sirf_audio_codec_regmap_config);
 479         if (IS_ERR(sirf_audio_codec->regmap))
 480                 return PTR_ERR(sirf_audio_codec->regmap);
 481
 482         sirf_audio_codec->clk = devm_clk_get(&pdev->dev, NULL);
 483         if (IS_ERR(sirf_audio_codec->clk)) {
 484                 dev_err(&pdev->dev, "Get clock failed.\n");
 485                 return PTR_ERR(sirf_audio_codec->clk);
 486         }
 487
 488         ret = clk_prepare_enable(sirf_audio_codec->clk);
 489         if (ret) {
 490                 dev_err(&pdev->dev, "Enable clock failed.\n");
 491                 return ret;
 492         }
 493
 494         ret = snd_soc_register_codec(&(pdev->dev),
 495                         &soc_codec_device_sirf_audio_codec,
 496                         &sirf_audio_codec_dai, 1);
 497         if (ret) {
 498                 dev_err(&pdev->dev, "Register Audio Codec dai failed.\n");
 499                 goto err_clk_put;
 500         }
 501
 502         /*
 503          * Always open charge pump, if not, when the charge pump closed the
 504          * adc will not stable
 505          */
 506         regmap_update_bits(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
 507                 IC_CPFREQ, IC_CPFREQ);
 508
 509         if (of_device_is_compatible(pdev->dev.of_node, "sirf,atlas6-audio-codec"))
 510                 regmap_update_bits(sirf_audio_codec->regmap,
 511                                 AUDIO_IC_CODEC_CTRL0, IC_CPEN, IC_CPEN);
 512         return 0;
 513
 514 err_clk_put:
 515         clk_disable_unprepare(sirf_audio_codec->clk);
 516         return ret;
 517 }
 518
 519 static int sirf_audio_codec_driver_remove(struct platform_device *pdev)
 520 {
 521         struct sirf_audio_codec *sirf_audio_codec = platform_get_drvdata(pdev);
 522
 523         clk_disable_unprepare(sirf_audio_codec->clk);
 524         snd_soc_unregister_codec(&(pdev->dev));
 525
 526         return 0;
 527 }
 528
 529 #ifdef CONFIG_PM_SLEEP
 530 static int sirf_audio_codec_suspend(struct device *dev)
 531 {
 532         struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(dev);
 533
 534         regmap_read(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
 535                 &sirf_audio_codec->reg_ctrl0);
 536         regmap_read(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL1,
 537                 &sirf_audio_codec->reg_ctrl1);
 538         clk_disable_unprepare(sirf_audio_codec->clk);
 539
 540         return 0;
 541 }
 542
 543 static int sirf_audio_codec_resume(struct device *dev)
 544 {
 545         struct sirf_audio_codec *sirf_audio_codec = dev_get_drvdata(dev);
 546         int ret;
 547
 548         ret = clk_prepare_enable(sirf_audio_codec->clk);
 549         if (ret)
 550                 return ret;
 551
 552         regmap_write(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL0,
 553                 sirf_audio_codec->reg_ctrl0);
 554         regmap_write(sirf_audio_codec->regmap, AUDIO_IC_CODEC_CTRL1,
 555                 sirf_audio_codec->reg_ctrl1);
 556
 557         return 0;
 558 }
 559 #endif
 560
 561 static const struct dev_pm_ops sirf_audio_codec_pm_ops = {
 562         SET_SYSTEM_SLEEP_PM_OPS(sirf_audio_codec_suspend, sirf_audio_codec_resume)
 563 };
 564
 565 static struct platform_driver sirf_audio_codec_driver = {
 566         .driver = {
 567                 .name = "sirf-audio-codec",
 568                 .owner = THIS_MODULE,
 569                 .of_match_table = sirf_audio_codec_of_match,
 570                 .pm = &sirf_audio_codec_pm_ops,
 571         },
 572         .probe = sirf_audio_codec_driver_probe,
 573         .remove = sirf_audio_codec_driver_remove,
 574 };
 575
 576 module_platform_driver(sirf_audio_codec_driver);
 577
 578 MODULE_DESCRIPTION("SiRF audio codec driver");
 579 MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>");
 580 MODULE_LICENSE("GPL v2");