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
  24 #include <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/soc.h>
  28 #include <sound/soc-dapm.h>
  29
  30 #include <mach/pxa-regs.h>
  31 #include <mach/hardware.h>
  32 #include <mach/magician.h>
  33 #include <asm/mach-types.h>
  34 #include "../codecs/uda1380.h"
  35 #include "pxa2xx-pcm.h"
  36 #include "pxa2xx-i2s.h"
  37 #include "pxa-ssp.h"
  38
  39 #define MAGICIAN_MIC       0
  40 #define MAGICIAN_MIC_EXT   1
  41
  42 static int magician_hp_switch;
  43 static int magician_spk_switch = 1;
  44 static int magician_in_sel = MAGICIAN_MIC;
  45
  46 static void magician_ext_control(struct snd_soc_codec *codec)
  47 {
  48         if (magician_spk_switch)
  49                 snd_soc_dapm_enable_pin(codec, "Speaker");
  50         else
  51                 snd_soc_dapm_disable_pin(codec, "Speaker");
  52         if (magician_hp_switch)
  53                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  54         else
  55                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  56
  57         switch (magician_in_sel) {
  58         case MAGICIAN_MIC:
  59                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
  60                 snd_soc_dapm_enable_pin(codec, "Call Mic");
  61                 break;
  62         case MAGICIAN_MIC_EXT:
  63                 snd_soc_dapm_disable_pin(codec, "Call Mic");
  64                 snd_soc_dapm_enable_pin(codec, "Headset Mic");
  65                 break;
  66         }
  67
  68         snd_soc_dapm_sync(codec);
  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->socdev->card->codec;
  75
  76         /* check the jack status at stream startup */
  77         magician_ext_control(codec);
  78
  79         return 0;
  80 }
  81
  82 /*
  83  * Magician uses SSP port for playback.
  84  */
  85 static int magician_playback_hw_params(struct snd_pcm_substream *substream,
  86                                        struct snd_pcm_hw_params *params)
  87 {
  88         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  89         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  90         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  91         unsigned int acps, acds, width, rate;
  92         unsigned int div4 = PXA_SSP_CLK_SCDB_4;
  93         int ret = 0;
  94
  95         rate = params_rate(params);
  96         width = snd_pcm_format_physical_width(params_format(params));
  97
  98         /*
  99          * rate = SSPSCLK / (2 * width(16 or 32))
 100          * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
 101          */
 102         switch (params_rate(params)) {
 103         case 8000:
 104                 /* off by a factor of 2: bug in the PXA27x audio clock? */
 105                 acps = 32842000;
 106                 switch (width) {
 107                 case 16:
 108                         /* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
 109                         acds = PXA_SSP_CLK_AUDIO_DIV_16;
 110                         break;
 111                 case 32:
 112                         /* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
 113                         acds = PXA_SSP_CLK_AUDIO_DIV_8;
 114                 }
 115                 break;
 116         case 11025:
 117                 acps = 5622000;
 118                 switch (width) {
 119                 case 16:
 120                         /* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
 121                         acds = PXA_SSP_CLK_AUDIO_DIV_4;
 122                         break;
 123                 case 32:
 124                         /* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
 125                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 126                 }
 127                 break;
 128         case 22050:
 129                 acps = 5622000;
 130                 switch (width) {
 131                 case 16:
 132                         /* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
 133                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 134                         break;
 135                 case 32:
 136                         /* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
 137                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 138                 }
 139                 break;
 140         case 44100:
 141                 acps = 5622000;
 142                 switch (width) {
 143                 case 16:
 144                         /* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
 145                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 146                         break;
 147                 case 32:
 148                         /* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
 149                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 150                 }
 151                 break;
 152         case 48000:
 153                 acps = 12235000;
 154                 switch (width) {
 155                 case 16:
 156                         /* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
 157                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 158                         break;
 159                 case 32:
 160                         /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
 161                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 162                 }
 163                 break;
 164         case 96000:
 165                 acps = 12235000;
 166                 switch (width) {
 167                 case 16:
 168                         /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
 169                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 170                         break;
 171                 case 32:
 172                         /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
 173                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 174                         div4 = PXA_SSP_CLK_SCDB_1;
 175                         break;
 176                 }
 177                 break;
 178         }
 179
 180         /* set codec DAI configuration */
 181         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
 182                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 183         if (ret < 0)
 184                 return ret;
 185
 186         /* set cpu DAI configuration */
 187         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 188                         SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBS_CFS);
 189         if (ret < 0)
 190                 return ret;
 191
 192         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
 193         if (ret < 0)
 194                 return ret;
 195
 196         /* set audio clock as clock source */
 197         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
 198                         SND_SOC_CLOCK_OUT);
 199         if (ret < 0)
 200                 return ret;
 201
 202         /* set the SSP audio system clock ACDS divider */
 203         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 204                         PXA_SSP_AUDIO_DIV_ACDS, acds);
 205         if (ret < 0)
 206                 return ret;
 207
 208         /* set the SSP audio system clock SCDB divider4 */
 209         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 210                         PXA_SSP_AUDIO_DIV_SCDB, div4);
 211         if (ret < 0)
 212                 return ret;
 213
 214         /* set SSP audio pll clock */
 215         ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, acps);
 216         if (ret < 0)
 217                 return ret;
 218
 219         return 0;
 220 }
 221
 222 /*
 223  * Magician uses I2S for capture.
 224  */
 225 static int magician_capture_hw_params(struct snd_pcm_substream *substream,
 226                                       struct snd_pcm_hw_params *params)
 227 {
 228         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 229         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 230         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 231         int ret = 0;
 232
 233         /* set codec DAI configuration */
 234         ret = snd_soc_dai_set_fmt(codec_dai,
 235                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 236                         SND_SOC_DAIFMT_CBS_CFS);
 237         if (ret < 0)
 238                 return ret;
 239
 240         /* set cpu DAI configuration */
 241         ret = snd_soc_dai_set_fmt(cpu_dai,
 242                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 243                         SND_SOC_DAIFMT_CBS_CFS);
 244         if (ret < 0)
 245                 return ret;
 246
 247         /* set the I2S system clock as output */
 248         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 249                         SND_SOC_CLOCK_OUT);
 250         if (ret < 0)
 251                 return ret;
 252
 253         return 0;
 254 }
 255
 256 static struct snd_soc_ops magician_capture_ops = {
 257         .startup = magician_startup,
 258         .hw_params = magician_capture_hw_params,
 259 };
 260
 261 static struct snd_soc_ops magician_playback_ops = {
 262         .startup = magician_startup,
 263         .hw_params = magician_playback_hw_params,
 264 };
 265
 266 static int magician_get_hp(struct snd_kcontrol *kcontrol,
 267                              struct snd_ctl_elem_value *ucontrol)
 268 {
 269         ucontrol->value.integer.value[0] = magician_hp_switch;
 270         return 0;
 271 }
 272
 273 static int magician_set_hp(struct snd_kcontrol *kcontrol,
 274                              struct snd_ctl_elem_value *ucontrol)
 275 {
 276         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 277
 278         if (magician_hp_switch == ucontrol->value.integer.value[0])
 279                 return 0;
 280
 281         magician_hp_switch = ucontrol->value.integer.value[0];
 282         magician_ext_control(codec);
 283         return 1;
 284 }
 285
 286 static int magician_get_spk(struct snd_kcontrol *kcontrol,
 287                             struct snd_ctl_elem_value *ucontrol)
 288 {
 289         ucontrol->value.integer.value[0] = magician_spk_switch;
 290         return 0;
 291 }
 292
 293 static int magician_set_spk(struct snd_kcontrol *kcontrol,
 294                             struct snd_ctl_elem_value *ucontrol)
 295 {
 296         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 297
 298         if (magician_spk_switch == ucontrol->value.integer.value[0])
 299                 return 0;
 300
 301         magician_spk_switch = ucontrol->value.integer.value[0];
 302         magician_ext_control(codec);
 303         return 1;
 304 }
 305
 306 static int magician_get_input(struct snd_kcontrol *kcontrol,
 307                               struct snd_ctl_elem_value *ucontrol)
 308 {
 309         ucontrol->value.integer.value[0] = magician_in_sel;
 310         return 0;
 311 }
 312
 313 static int magician_set_input(struct snd_kcontrol *kcontrol,
 314                               struct snd_ctl_elem_value *ucontrol)
 315 {
 316         if (magician_in_sel == ucontrol->value.integer.value[0])
 317                 return 0;
 318
 319         magician_in_sel = ucontrol->value.integer.value[0];
 320
 321         switch (magician_in_sel) {
 322         case MAGICIAN_MIC:
 323                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
 324                 break;
 325         case MAGICIAN_MIC_EXT:
 326                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
 327         }
 328
 329         return 1;
 330 }
 331
 332 static int magician_spk_power(struct snd_soc_dapm_widget *w,
 333                                 struct snd_kcontrol *k, int event)
 334 {
 335         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
 336         return 0;
 337 }
 338
 339 static int magician_hp_power(struct snd_soc_dapm_widget *w,
 340                                 struct snd_kcontrol *k, int event)
 341 {
 342         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
 343         return 0;
 344 }
 345
 346 static int magician_mic_bias(struct snd_soc_dapm_widget *w,
 347                                 struct snd_kcontrol *k, int event)
 348 {
 349         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
 350         return 0;
 351 }
 352
 353 /* magician machine dapm widgets */
 354 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 355         SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
 356         SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
 357         SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
 358         SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
 359 };
 360
 361 /* magician machine audio_map */
 362 static const struct snd_soc_dapm_route audio_map[] = {
 363
 364         /* Headphone connected to VOUTL, VOUTR */
 365         {"Headphone Jack", NULL, "VOUTL"},
 366         {"Headphone Jack", NULL, "VOUTR"},
 367
 368         /* Speaker connected to VOUTL, VOUTR */
 369         {"Speaker", NULL, "VOUTL"},
 370         {"Speaker", NULL, "VOUTR"},
 371
 372         /* Mics are connected to VINM */
 373         {"VINM", NULL, "Headset Mic"},
 374         {"VINM", NULL, "Call Mic"},
 375 };
 376
 377 static const char *input_select[] = {"Call Mic", "Headset Mic"};
 378 static const struct soc_enum magician_in_sel_enum =
 379         SOC_ENUM_SINGLE_EXT(2, input_select);
 380
 381 static const struct snd_kcontrol_new uda1380_magician_controls[] = {
 382         SOC_SINGLE_BOOL_EXT("Headphone Switch",
 383                         (unsigned long)&magician_hp_switch,
 384                         magician_get_hp, magician_set_hp),
 385         SOC_SINGLE_BOOL_EXT("Speaker Switch",
 386                         (unsigned long)&magician_spk_switch,
 387                         magician_get_spk, magician_set_spk),
 388         SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
 389                         magician_get_input, magician_set_input),
 390 };
 391
 392 /*
 393  * Logic for a uda1380 as connected on a HTC Magician
 394  */
 395 static int magician_uda1380_init(struct snd_soc_codec *codec)
 396 {
 397         int err;
 398
 399         /* NC codec pins */
 400         snd_soc_dapm_nc_pin(codec, "VOUTLHP");
 401         snd_soc_dapm_nc_pin(codec, "VOUTRHP");
 402
 403         /* FIXME: is anything connected here? */
 404         snd_soc_dapm_nc_pin(codec, "VINL");
 405         snd_soc_dapm_nc_pin(codec, "VINR");
 406
 407         /* Add magician specific controls */
 408         err = snd_soc_add_controls(codec, uda1380_magician_controls,
 409                                 ARRAY_SIZE(uda1380_magician_controls));
 410         if (err < 0)
 411                 return err;
 412
 413         /* Add magician specific widgets */
 414         snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
 415                                   ARRAY_SIZE(uda1380_dapm_widgets));
 416
 417         /* Set up magician specific audio path interconnects */
 418         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 419
 420         snd_soc_dapm_sync(codec);
 421         return 0;
 422 }
 423
 424 /* magician digital audio interface glue - connects codec <--> CPU */
 425 static struct snd_soc_dai_link magician_dai[] = {
 426 {
 427         .name = "uda1380",
 428         .stream_name = "UDA1380 Playback",
 429         .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
 430         .codec_dai = &uda1380_dai[UDA1380_DAI_PLAYBACK],
 431         .init = magician_uda1380_init,
 432         .ops = &magician_playback_ops,
 433 },
 434 {
 435         .name = "uda1380",
 436         .stream_name = "UDA1380 Capture",
 437         .cpu_dai = &pxa_i2s_dai,
 438         .codec_dai = &uda1380_dai[UDA1380_DAI_CAPTURE],
 439         .ops = &magician_capture_ops,
 440 }
 441 };
 442
 443 /* magician audio machine driver */
 444 static struct snd_soc_card snd_soc_card_magician = {
 445         .name = "Magician",
 446         .dai_link = magician_dai,
 447         .num_links = ARRAY_SIZE(magician_dai),
 448         .platform = &pxa2xx_soc_platform,
 449 };
 450
 451 /* magician audio private data */
 452 static struct uda1380_setup_data magician_uda1380_setup = {
 453         .i2c_address = 0x18,
 454         .dac_clk = UDA1380_DAC_CLK_WSPLL,
 455 };
 456
 457 /* magician audio subsystem */
 458 static struct snd_soc_device magician_snd_devdata = {
 459         .card = &snd_soc_card_magician,
 460         .codec_dev = &soc_codec_dev_uda1380,
 461         .codec_data = &magician_uda1380_setup,
 462 };
 463
 464 static struct platform_device *magician_snd_device;
 465
 466 static int __init magician_init(void)
 467 {
 468         int ret;
 469
 470         if (!machine_is_magician())
 471                 return -ENODEV;
 472
 473         ret = gpio_request(EGPIO_MAGICIAN_CODEC_POWER, "CODEC_POWER");
 474         if (ret)
 475                 goto err_request_power;
 476         ret = gpio_request(EGPIO_MAGICIAN_CODEC_RESET, "CODEC_RESET");
 477         if (ret)
 478                 goto err_request_reset;
 479         ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
 480         if (ret)
 481                 goto err_request_spk;
 482         ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
 483         if (ret)
 484                 goto err_request_ep;
 485         ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
 486         if (ret)
 487                 goto err_request_mic;
 488         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
 489         if (ret)
 490                 goto err_request_in_sel0;
 491         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
 492         if (ret)
 493                 goto err_request_in_sel1;
 494
 495         gpio_set_value(EGPIO_MAGICIAN_CODEC_POWER, 1);
 496         gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
 497
 498         /* we may need to have the clock running here - pH5 */
 499         gpio_set_value(EGPIO_MAGICIAN_CODEC_RESET, 1);
 500         udelay(5);
 501         gpio_set_value(EGPIO_MAGICIAN_CODEC_RESET, 0);
 502
 503         magician_snd_device = platform_device_alloc("soc-audio", -1);
 504         if (!magician_snd_device) {
 505                 ret = -ENOMEM;
 506                 goto err_pdev;
 507         }
 508
 509         platform_set_drvdata(magician_snd_device, &magician_snd_devdata);
 510         magician_snd_devdata.dev = &magician_snd_device->dev;
 511         ret = platform_device_add(magician_snd_device);
 512         if (ret) {
 513                 platform_device_put(magician_snd_device);
 514                 goto err_pdev;
 515         }
 516
 517         return 0;
 518
 519 err_pdev:
 520         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 521 err_request_in_sel1:
 522         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 523 err_request_in_sel0:
 524         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 525 err_request_mic:
 526         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 527 err_request_ep:
 528         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 529 err_request_spk:
 530         gpio_free(EGPIO_MAGICIAN_CODEC_RESET);
 531 err_request_reset:
 532         gpio_free(EGPIO_MAGICIAN_CODEC_POWER);
 533 err_request_power:
 534         return ret;
 535 }
 536
 537 static void __exit magician_exit(void)
 538 {
 539         platform_device_unregister(magician_snd_device);
 540
 541         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
 542         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
 543         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
 544         gpio_set_value(EGPIO_MAGICIAN_CODEC_POWER, 0);
 545
 546         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 547         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 548         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 549         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 550         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 551         gpio_free(EGPIO_MAGICIAN_CODEC_RESET);
 552         gpio_free(EGPIO_MAGICIAN_CODEC_POWER);
 553 }
 554
 555 module_init(magician_init);
 556 module_exit(magician_exit);
 557
 558 MODULE_AUTHOR("Philipp Zabel");
 559 MODULE_DESCRIPTION("ALSA SoC Magician");
 560 MODULE_LICENSE("GPL");