sound/soc/pxa/magician.c

   1 /*
   2  * SoC audio for HTC Magician
   3  *
   4  * Copyright (c) 2006 Philipp Zabel <philipp.zabel@gmail.com>
   5  *
   6  * based on spitz.c,
   7  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
   8  *          Richard Purdie <richard@openedhand.com>
   9  *
  10  *  This program is free software; you can redistribute  it and/or modify it
  11  *  under  the terms of  the GNU General  Public License as published by the
  12  *  Free Software Foundation;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  *
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/timer.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/delay.h>
  22 #include <linux/gpio.h>
  23 #include <linux/i2c.h>
  24
  25 #include <sound/core.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/soc.h>
  29 #include <sound/uda1380.h>
  30
  31 #include <mach/magician.h>
  32 #include <asm/mach-types.h>
  33 #include "../codecs/uda1380.h"
  34 #include "pxa2xx-i2s.h"
  35 #include "pxa-ssp.h"
  36
  37 #define MAGICIAN_MIC       0
  38 #define MAGICIAN_MIC_EXT   1
  39
  40 static int magician_hp_switch;
  41 static int magician_spk_switch = 1;
  42 static int magician_in_sel = MAGICIAN_MIC;
  43
  44 static void magician_ext_control(struct snd_soc_codec *codec)
  45 {
  46         struct snd_soc_dapm_context *dapm = &codec->dapm;
  47
  48         if (magician_spk_switch)
  49                 snd_soc_dapm_enable_pin(dapm, "Speaker");
  50         else
  51                 snd_soc_dapm_disable_pin(dapm, "Speaker");
  52         if (magician_hp_switch)
  53                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  54         else
  55                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  56
  57         switch (magician_in_sel) {
  58         case MAGICIAN_MIC:
  59                 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
  60                 snd_soc_dapm_enable_pin(dapm, "Call Mic");
  61                 break;
  62         case MAGICIAN_MIC_EXT:
  63                 snd_soc_dapm_disable_pin(dapm, "Call Mic");
  64                 snd_soc_dapm_enable_pin(dapm, "Headset Mic");
  65                 break;
  66         }
  67
  68         snd_soc_dapm_sync(dapm);
  69 }
  70
  71 static int magician_startup(struct snd_pcm_substream *substream)
  72 {
  73         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  74         struct snd_soc_codec *codec = rtd->codec;
  75
  76         mutex_lock(&codec->mutex);
  77
  78         /* check the jack status at stream startup */
  79         magician_ext_control(codec);
  80
  81         mutex_unlock(&codec->mutex);
  82
  83         return 0;
  84 }
  85
  86 /*
  87  * Magician uses SSP port for playback.
  88  */
  89 static int magician_playback_hw_params(struct snd_pcm_substream *substream,
  90                                        struct snd_pcm_hw_params *params)
  91 {
  92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  93         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  94         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  95         unsigned int acps, acds, width, rate;
  96         unsigned int div4 = PXA_SSP_CLK_SCDB_4;
  97         int ret = 0;
  98
  99         rate = params_rate(params);
 100         width = snd_pcm_format_physical_width(params_format(params));
 101
 102         /*
 103          * rate = SSPSCLK / (2 * width(16 or 32))
 104          * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
 105          */
 106         switch (params_rate(params)) {
 107         case 8000:
 108                 /* off by a factor of 2: bug in the PXA27x audio clock? */
 109                 acps = 32842000;
 110                 switch (width) {
 111                 case 16:
 112                         /* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
 113                         acds = PXA_SSP_CLK_AUDIO_DIV_16;
 114                         break;
 115                 default: /* 32 */
 116                         /* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
 117                         acds = PXA_SSP_CLK_AUDIO_DIV_8;
 118                 }
 119                 break;
 120         case 11025:
 121                 acps = 5622000;
 122                 switch (width) {
 123                 case 16:
 124                         /* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
 125                         acds = PXA_SSP_CLK_AUDIO_DIV_4;
 126                         break;
 127                 default: /* 32 */
 128                         /* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
 129                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 130                 }
 131                 break;
 132         case 22050:
 133                 acps = 5622000;
 134                 switch (width) {
 135                 case 16:
 136                         /* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
 137                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 138                         break;
 139                 default: /* 32 */
 140                         /* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
 141                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 142                 }
 143                 break;
 144         case 44100:
 145                 acps = 5622000;
 146                 switch (width) {
 147                 case 16:
 148                         /* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
 149                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 150                         break;
 151                 default: /* 32 */
 152                         /* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
 153                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 154                 }
 155                 break;
 156         case 48000:
 157                 acps = 12235000;
 158                 switch (width) {
 159                 case 16:
 160                         /* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
 161                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 162                         break;
 163                 default: /* 32 */
 164                         /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
 165                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 166                 }
 167                 break;
 168         case 96000:
 169         default:
 170                 acps = 12235000;
 171                 switch (width) {
 172                 case 16:
 173                         /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
 174                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 175                         break;
 176                 default: /* 32 */
 177                         /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
 178                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 179                         div4 = PXA_SSP_CLK_SCDB_1;
 180                         break;
 181                 }
 182                 break;
 183         }
 184
 185         /* set codec DAI configuration */
 186         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
 187                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 188         if (ret < 0)
 189                 return ret;
 190
 191         /* set cpu DAI configuration */
 192         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 193                         SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_CBS_CFS);
 194         if (ret < 0)
 195                 return ret;
 196
 197         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 0, 1, width);
 198         if (ret < 0)
 199                 return ret;
 200
 201         /* set audio clock as clock source */
 202         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
 203                         SND_SOC_CLOCK_OUT);
 204         if (ret < 0)
 205                 return ret;
 206
 207         /* set the SSP audio system clock ACDS divider */
 208         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 209                         PXA_SSP_AUDIO_DIV_ACDS, acds);
 210         if (ret < 0)
 211                 return ret;
 212
 213         /* set the SSP audio system clock SCDB divider4 */
 214         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 215                         PXA_SSP_AUDIO_DIV_SCDB, div4);
 216         if (ret < 0)
 217                 return ret;
 218
 219         /* set SSP audio pll clock */
 220         ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, acps);
 221         if (ret < 0)
 222                 return ret;
 223
 224         return 0;
 225 }
 226
 227 /*
 228  * Magician uses I2S for capture.
 229  */
 230 static int magician_capture_hw_params(struct snd_pcm_substream *substream,
 231                                       struct snd_pcm_hw_params *params)
 232 {
 233         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 234         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 235         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 236         int ret = 0;
 237
 238         /* set codec DAI configuration */
 239         ret = snd_soc_dai_set_fmt(codec_dai,
 240                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 241                         SND_SOC_DAIFMT_CBS_CFS);
 242         if (ret < 0)
 243                 return ret;
 244
 245         /* set cpu DAI configuration */
 246         ret = snd_soc_dai_set_fmt(cpu_dai,
 247                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 248                         SND_SOC_DAIFMT_CBS_CFS);
 249         if (ret < 0)
 250                 return ret;
 251
 252         /* set the I2S system clock as output */
 253         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 254                         SND_SOC_CLOCK_OUT);
 255         if (ret < 0)
 256                 return ret;
 257
 258         return 0;
 259 }
 260
 261 static struct snd_soc_ops magician_capture_ops = {
 262         .startup = magician_startup,
 263         .hw_params = magician_capture_hw_params,
 264 };
 265
 266 static struct snd_soc_ops magician_playback_ops = {
 267         .startup = magician_startup,
 268         .hw_params = magician_playback_hw_params,
 269 };
 270
 271 static int magician_get_hp(struct snd_kcontrol *kcontrol,
 272                              struct snd_ctl_elem_value *ucontrol)
 273 {
 274         ucontrol->value.integer.value[0] = magician_hp_switch;
 275         return 0;
 276 }
 277
 278 static int magician_set_hp(struct snd_kcontrol *kcontrol,
 279                              struct snd_ctl_elem_value *ucontrol)
 280 {
 281         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 282
 283         if (magician_hp_switch == ucontrol->value.integer.value[0])
 284                 return 0;
 285
 286         magician_hp_switch = ucontrol->value.integer.value[0];
 287         magician_ext_control(codec);
 288         return 1;
 289 }
 290
 291 static int magician_get_spk(struct snd_kcontrol *kcontrol,
 292                             struct snd_ctl_elem_value *ucontrol)
 293 {
 294         ucontrol->value.integer.value[0] = magician_spk_switch;
 295         return 0;
 296 }
 297
 298 static int magician_set_spk(struct snd_kcontrol *kcontrol,
 299                             struct snd_ctl_elem_value *ucontrol)
 300 {
 301         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 302
 303         if (magician_spk_switch == ucontrol->value.integer.value[0])
 304                 return 0;
 305
 306         magician_spk_switch = ucontrol->value.integer.value[0];
 307         magician_ext_control(codec);
 308         return 1;
 309 }
 310
 311 static int magician_get_input(struct snd_kcontrol *kcontrol,
 312                               struct snd_ctl_elem_value *ucontrol)
 313 {
 314         ucontrol->value.integer.value[0] = magician_in_sel;
 315         return 0;
 316 }
 317
 318 static int magician_set_input(struct snd_kcontrol *kcontrol,
 319                               struct snd_ctl_elem_value *ucontrol)
 320 {
 321         if (magician_in_sel == ucontrol->value.integer.value[0])
 322                 return 0;
 323
 324         magician_in_sel = ucontrol->value.integer.value[0];
 325
 326         switch (magician_in_sel) {
 327         case MAGICIAN_MIC:
 328                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
 329                 break;
 330         case MAGICIAN_MIC_EXT:
 331                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
 332         }
 333
 334         return 1;
 335 }
 336
 337 static int magician_spk_power(struct snd_soc_dapm_widget *w,
 338                                 struct snd_kcontrol *k, int event)
 339 {
 340         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
 341         return 0;
 342 }
 343
 344 static int magician_hp_power(struct snd_soc_dapm_widget *w,
 345                                 struct snd_kcontrol *k, int event)
 346 {
 347         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
 348         return 0;
 349 }
 350
 351 static int magician_mic_bias(struct snd_soc_dapm_widget *w,
 352                                 struct snd_kcontrol *k, int event)
 353 {
 354         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
 355         return 0;
 356 }
 357
 358 /* magician machine dapm widgets */
 359 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 360         SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
 361         SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
 362         SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
 363         SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
 364 };
 365
 366 /* magician machine audio_map */
 367 static const struct snd_soc_dapm_route audio_map[] = {
 368
 369         /* Headphone connected to VOUTL, VOUTR */
 370         {"Headphone Jack", NULL, "VOUTL"},
 371         {"Headphone Jack", NULL, "VOUTR"},
 372
 373         /* Speaker connected to VOUTL, VOUTR */
 374         {"Speaker", NULL, "VOUTL"},
 375         {"Speaker", NULL, "VOUTR"},
 376
 377         /* Mics are connected to VINM */
 378         {"VINM", NULL, "Headset Mic"},
 379         {"VINM", NULL, "Call Mic"},
 380 };
 381
 382 static const char *input_select[] = {"Call Mic", "Headset Mic"};
 383 static const struct soc_enum magician_in_sel_enum =
 384         SOC_ENUM_SINGLE_EXT(2, input_select);
 385
 386 static const struct snd_kcontrol_new uda1380_magician_controls[] = {
 387         SOC_SINGLE_BOOL_EXT("Headphone Switch",
 388                         (unsigned long)&magician_hp_switch,
 389                         magician_get_hp, magician_set_hp),
 390         SOC_SINGLE_BOOL_EXT("Speaker Switch",
 391                         (unsigned long)&magician_spk_switch,
 392                         magician_get_spk, magician_set_spk),
 393         SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
 394                         magician_get_input, magician_set_input),
 395 };
 396
 397 /*
 398  * Logic for a uda1380 as connected on a HTC Magician
 399  */
 400 static int magician_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 401 {
 402         struct snd_soc_codec *codec = rtd->codec;
 403         struct snd_soc_dapm_context *dapm = &codec->dapm;
 404         int err;
 405
 406         /* NC codec pins */
 407         snd_soc_dapm_nc_pin(dapm, "VOUTLHP");
 408         snd_soc_dapm_nc_pin(dapm, "VOUTRHP");
 409
 410         /* FIXME: is anything connected here? */
 411         snd_soc_dapm_nc_pin(dapm, "VINL");
 412         snd_soc_dapm_nc_pin(dapm, "VINR");
 413
 414         /* Add magician specific controls */
 415         err = snd_soc_add_controls(codec, uda1380_magician_controls,
 416                                 ARRAY_SIZE(uda1380_magician_controls));
 417         if (err < 0)
 418                 return err;
 419
 420         /* Add magician specific widgets */
 421         snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
 422                                   ARRAY_SIZE(uda1380_dapm_widgets));
 423
 424         /* Set up magician specific audio path interconnects */
 425         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 426
 427         snd_soc_dapm_sync(dapm);
 428         return 0;
 429 }
 430
 431 /* magician digital audio interface glue - connects codec <--> CPU */
 432 static struct snd_soc_dai_link magician_dai[] = {
 433 {
 434         .name = "uda1380",
 435         .stream_name = "UDA1380 Playback",
 436         .cpu_dai_name = "pxa-ssp-dai.0",
 437         .codec_dai_name = "uda1380-hifi-playback",
 438         .platform_name = "pxa-pcm-audio",
 439         .codec_name = "uda1380-codec.0-0018",
 440         .init = magician_uda1380_init,
 441         .ops = &magician_playback_ops,
 442 },
 443 {
 444         .name = "uda1380",
 445         .stream_name = "UDA1380 Capture",
 446         .cpu_dai_name = "pxa2xx-i2s",
 447         .codec_dai_name = "uda1380-hifi-capture",
 448         .platform_name = "pxa-pcm-audio",
 449         .codec_name = "uda1380-codec.0-0018",
 450         .ops = &magician_capture_ops,
 451 }
 452 };
 453
 454 /* magician audio machine driver */
 455 static struct snd_soc_card snd_soc_card_magician = {
 456         .name = "Magician",
 457         .dai_link = magician_dai,
 458         .num_links = ARRAY_SIZE(magician_dai),
 459
 460 };
 461
 462 static struct platform_device *magician_snd_device;
 463
 464 /*
 465  * FIXME: move into magician board file once merged into the pxa tree
 466  */
 467 static struct uda1380_platform_data uda1380_info = {
 468         .gpio_power = EGPIO_MAGICIAN_CODEC_POWER,
 469         .gpio_reset = EGPIO_MAGICIAN_CODEC_RESET,
 470         .dac_clk    = UDA1380_DAC_CLK_WSPLL,
 471 };
 472
 473 static struct i2c_board_info i2c_board_info[] = {
 474         {
 475                 I2C_BOARD_INFO("uda1380", 0x18),
 476                 .platform_data = &uda1380_info,
 477         },
 478 };
 479
 480 static int __init magician_init(void)
 481 {
 482         int ret;
 483         struct i2c_adapter *adapter;
 484         struct i2c_client *client;
 485
 486         if (!machine_is_magician())
 487                 return -ENODEV;
 488
 489         adapter = i2c_get_adapter(0);
 490         if (!adapter)
 491                 return -ENODEV;
 492         client = i2c_new_device(adapter, i2c_board_info);
 493         i2c_put_adapter(adapter);
 494         if (!client)
 495                 return -ENODEV;
 496
 497         ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
 498         if (ret)
 499                 goto err_request_spk;
 500         ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
 501         if (ret)
 502                 goto err_request_ep;
 503         ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
 504         if (ret)
 505                 goto err_request_mic;
 506         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
 507         if (ret)
 508                 goto err_request_in_sel0;
 509         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
 510         if (ret)
 511                 goto err_request_in_sel1;
 512
 513         gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
 514
 515         magician_snd_device = platform_device_alloc("soc-audio", -1);
 516         if (!magician_snd_device) {
 517                 ret = -ENOMEM;
 518                 goto err_pdev;
 519         }
 520
 521         platform_set_drvdata(magician_snd_device, &snd_soc_card_magician);
 522         ret = platform_device_add(magician_snd_device);
 523         if (ret) {
 524                 platform_device_put(magician_snd_device);
 525                 goto err_pdev;
 526         }
 527
 528         return 0;
 529
 530 err_pdev:
 531         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 532 err_request_in_sel1:
 533         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 534 err_request_in_sel0:
 535         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 536 err_request_mic:
 537         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 538 err_request_ep:
 539         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 540 err_request_spk:
 541         return ret;
 542 }
 543
 544 static void __exit magician_exit(void)
 545 {
 546         platform_device_unregister(magician_snd_device);
 547
 548         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
 549         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
 550         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
 551
 552         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 553         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 554         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 555         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 556         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 557 }
 558
 559 module_init(magician_init);
 560 module_exit(magician_exit);
 561
 562 MODULE_AUTHOR("Philipp Zabel");
 563 MODULE_DESCRIPTION("ALSA SoC Magician");
 564 MODULE_LICENSE("GPL");