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/magician.h>
  31 #include <asm/mach-types.h>
  32 #include "../codecs/uda1380.h"
  33 #include "pxa2xx-pcm.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         if (magician_spk_switch)
  47                 snd_soc_dapm_enable_pin(codec, "Speaker");
  48         else
  49                 snd_soc_dapm_disable_pin(codec, "Speaker");
  50         if (magician_hp_switch)
  51                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  52         else
  53                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  54
  55         switch (magician_in_sel) {
  56         case MAGICIAN_MIC:
  57                 snd_soc_dapm_disable_pin(codec, "Headset Mic");
  58                 snd_soc_dapm_enable_pin(codec, "Call Mic");
  59                 break;
  60         case MAGICIAN_MIC_EXT:
  61                 snd_soc_dapm_disable_pin(codec, "Call Mic");
  62                 snd_soc_dapm_enable_pin(codec, "Headset Mic");
  63                 break;
  64         }
  65
  66         snd_soc_dapm_sync(codec);
  67 }
  68
  69 static int magician_startup(struct snd_pcm_substream *substream)
  70 {
  71         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  72         struct snd_soc_codec *codec = rtd->socdev->card->codec;
  73
  74         /* check the jack status at stream startup */
  75         magician_ext_control(codec);
  76
  77         return 0;
  78 }
  79
  80 /*
  81  * Magician uses SSP port for playback.
  82  */
  83 static int magician_playback_hw_params(struct snd_pcm_substream *substream,
  84                                        struct snd_pcm_hw_params *params)
  85 {
  86         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  87         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  88         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  89         unsigned int acps, acds, width, rate;
  90         unsigned int div4 = PXA_SSP_CLK_SCDB_4;
  91         int ret = 0;
  92
  93         rate = params_rate(params);
  94         width = snd_pcm_format_physical_width(params_format(params));
  95
  96         /*
  97          * rate = SSPSCLK / (2 * width(16 or 32))
  98          * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
  99          */
 100         switch (params_rate(params)) {
 101         case 8000:
 102                 /* off by a factor of 2: bug in the PXA27x audio clock? */
 103                 acps = 32842000;
 104                 switch (width) {
 105                 case 16:
 106                         /* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
 107                         acds = PXA_SSP_CLK_AUDIO_DIV_16;
 108                         break;
 109                 default: /* 32 */
 110                         /* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
 111                         acds = PXA_SSP_CLK_AUDIO_DIV_8;
 112                 }
 113                 break;
 114         case 11025:
 115                 acps = 5622000;
 116                 switch (width) {
 117                 case 16:
 118                         /* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
 119                         acds = PXA_SSP_CLK_AUDIO_DIV_4;
 120                         break;
 121                 default: /* 32 */
 122                         /* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
 123                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 124                 }
 125                 break;
 126         case 22050:
 127                 acps = 5622000;
 128                 switch (width) {
 129                 case 16:
 130                         /* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
 131                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 132                         break;
 133                 default: /* 32 */
 134                         /* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
 135                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 136                 }
 137                 break;
 138         case 44100:
 139                 acps = 5622000;
 140                 switch (width) {
 141                 case 16:
 142                         /* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
 143                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 144                         break;
 145                 default: /* 32 */
 146                         /* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
 147                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 148                 }
 149                 break;
 150         case 48000:
 151                 acps = 12235000;
 152                 switch (width) {
 153                 case 16:
 154                         /* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
 155                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 156                         break;
 157                 default: /* 32 */
 158                         /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
 159                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 160                 }
 161                 break;
 162         case 96000:
 163         default:
 164                 acps = 12235000;
 165                 switch (width) {
 166                 case 16:
 167                         /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
 168                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 169                         break;
 170                 default: /* 32 */
 171                         /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
 172                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 173                         div4 = PXA_SSP_CLK_SCDB_1;
 174                         break;
 175                 }
 176                 break;
 177         }
 178
 179         /* set codec DAI configuration */
 180         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
 181                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 182         if (ret < 0)
 183                 return ret;
 184
 185         /* set cpu DAI configuration */
 186         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 187                         SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBS_CFS);
 188         if (ret < 0)
 189                 return ret;
 190
 191         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
 192         if (ret < 0)
 193                 return ret;
 194
 195         /* set audio clock as clock source */
 196         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
 197                         SND_SOC_CLOCK_OUT);
 198         if (ret < 0)
 199                 return ret;
 200
 201         /* set the SSP audio system clock ACDS divider */
 202         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 203                         PXA_SSP_AUDIO_DIV_ACDS, acds);
 204         if (ret < 0)
 205                 return ret;
 206
 207         /* set the SSP audio system clock SCDB divider4 */
 208         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 209                         PXA_SSP_AUDIO_DIV_SCDB, div4);
 210         if (ret < 0)
 211                 return ret;
 212
 213         /* set SSP audio pll clock */
 214         ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, acps);
 215         if (ret < 0)
 216                 return ret;
 217
 218         return 0;
 219 }
 220
 221 /*
 222  * Magician uses I2S for capture.
 223  */
 224 static int magician_capture_hw_params(struct snd_pcm_substream *substream,
 225                                       struct snd_pcm_hw_params *params)
 226 {
 227         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 228         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 229         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 230         int ret = 0;
 231
 232         /* set codec DAI configuration */
 233         ret = snd_soc_dai_set_fmt(codec_dai,
 234                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 235                         SND_SOC_DAIFMT_CBS_CFS);
 236         if (ret < 0)
 237                 return ret;
 238
 239         /* set cpu DAI configuration */
 240         ret = snd_soc_dai_set_fmt(cpu_dai,
 241                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 242                         SND_SOC_DAIFMT_CBS_CFS);
 243         if (ret < 0)
 244                 return ret;
 245
 246         /* set the I2S system clock as output */
 247         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 248                         SND_SOC_CLOCK_OUT);
 249         if (ret < 0)
 250                 return ret;
 251
 252         return 0;
 253 }
 254
 255 static struct snd_soc_ops magician_capture_ops = {
 256         .startup = magician_startup,
 257         .hw_params = magician_capture_hw_params,
 258 };
 259
 260 static struct snd_soc_ops magician_playback_ops = {
 261         .startup = magician_startup,
 262         .hw_params = magician_playback_hw_params,
 263 };
 264
 265 static int magician_get_hp(struct snd_kcontrol *kcontrol,
 266                              struct snd_ctl_elem_value *ucontrol)
 267 {
 268         ucontrol->value.integer.value[0] = magician_hp_switch;
 269         return 0;
 270 }
 271
 272 static int magician_set_hp(struct snd_kcontrol *kcontrol,
 273                              struct snd_ctl_elem_value *ucontrol)
 274 {
 275         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 276
 277         if (magician_hp_switch == ucontrol->value.integer.value[0])
 278                 return 0;
 279
 280         magician_hp_switch = ucontrol->value.integer.value[0];
 281         magician_ext_control(codec);
 282         return 1;
 283 }
 284
 285 static int magician_get_spk(struct snd_kcontrol *kcontrol,
 286                             struct snd_ctl_elem_value *ucontrol)
 287 {
 288         ucontrol->value.integer.value[0] = magician_spk_switch;
 289         return 0;
 290 }
 291
 292 static int magician_set_spk(struct snd_kcontrol *kcontrol,
 293                             struct snd_ctl_elem_value *ucontrol)
 294 {
 295         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 296
 297         if (magician_spk_switch == ucontrol->value.integer.value[0])
 298                 return 0;
 299
 300         magician_spk_switch = ucontrol->value.integer.value[0];
 301         magician_ext_control(codec);
 302         return 1;
 303 }
 304
 305 static int magician_get_input(struct snd_kcontrol *kcontrol,
 306                               struct snd_ctl_elem_value *ucontrol)
 307 {
 308         ucontrol->value.integer.value[0] = magician_in_sel;
 309         return 0;
 310 }
 311
 312 static int magician_set_input(struct snd_kcontrol *kcontrol,
 313                               struct snd_ctl_elem_value *ucontrol)
 314 {
 315         if (magician_in_sel == ucontrol->value.integer.value[0])
 316                 return 0;
 317
 318         magician_in_sel = ucontrol->value.integer.value[0];
 319
 320         switch (magician_in_sel) {
 321         case MAGICIAN_MIC:
 322                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
 323                 break;
 324         case MAGICIAN_MIC_EXT:
 325                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
 326         }
 327
 328         return 1;
 329 }
 330
 331 static int magician_spk_power(struct snd_soc_dapm_widget *w,
 332                                 struct snd_kcontrol *k, int event)
 333 {
 334         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
 335         return 0;
 336 }
 337
 338 static int magician_hp_power(struct snd_soc_dapm_widget *w,
 339                                 struct snd_kcontrol *k, int event)
 340 {
 341         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
 342         return 0;
 343 }
 344
 345 static int magician_mic_bias(struct snd_soc_dapm_widget *w,
 346                                 struct snd_kcontrol *k, int event)
 347 {
 348         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
 349         return 0;
 350 }
 351
 352 /* magician machine dapm widgets */
 353 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 354         SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
 355         SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
 356         SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
 357         SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
 358 };
 359
 360 /* magician machine audio_map */
 361 static const struct snd_soc_dapm_route audio_map[] = {
 362
 363         /* Headphone connected to VOUTL, VOUTR */
 364         {"Headphone Jack", NULL, "VOUTL"},
 365         {"Headphone Jack", NULL, "VOUTR"},
 366
 367         /* Speaker connected to VOUTL, VOUTR */
 368         {"Speaker", NULL, "VOUTL"},
 369         {"Speaker", NULL, "VOUTR"},
 370
 371         /* Mics are connected to VINM */
 372         {"VINM", NULL, "Headset Mic"},
 373         {"VINM", NULL, "Call Mic"},
 374 };
 375
 376 static const char *input_select[] = {"Call Mic", "Headset Mic"};
 377 static const struct soc_enum magician_in_sel_enum =
 378         SOC_ENUM_SINGLE_EXT(2, input_select);
 379
 380 static const struct snd_kcontrol_new uda1380_magician_controls[] = {
 381         SOC_SINGLE_BOOL_EXT("Headphone Switch",
 382                         (unsigned long)&magician_hp_switch,
 383                         magician_get_hp, magician_set_hp),
 384         SOC_SINGLE_BOOL_EXT("Speaker Switch",
 385                         (unsigned long)&magician_spk_switch,
 386                         magician_get_spk, magician_set_spk),
 387         SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
 388                         magician_get_input, magician_set_input),
 389 };
 390
 391 /*
 392  * Logic for a uda1380 as connected on a HTC Magician
 393  */
 394 static int magician_uda1380_init(struct snd_soc_codec *codec)
 395 {
 396         int err;
 397
 398         /* NC codec pins */
 399         snd_soc_dapm_nc_pin(codec, "VOUTLHP");
 400         snd_soc_dapm_nc_pin(codec, "VOUTRHP");
 401
 402         /* FIXME: is anything connected here? */
 403         snd_soc_dapm_nc_pin(codec, "VINL");
 404         snd_soc_dapm_nc_pin(codec, "VINR");
 405
 406         /* Add magician specific controls */
 407         err = snd_soc_add_controls(codec, uda1380_magician_controls,
 408                                 ARRAY_SIZE(uda1380_magician_controls));
 409         if (err < 0)
 410                 return err;
 411
 412         /* Add magician specific widgets */
 413         snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
 414                                   ARRAY_SIZE(uda1380_dapm_widgets));
 415
 416         /* Set up magician specific audio path interconnects */
 417         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 418
 419         snd_soc_dapm_sync(codec);
 420         return 0;
 421 }
 422
 423 /* magician digital audio interface glue - connects codec <--> CPU */
 424 static struct snd_soc_dai_link magician_dai[] = {
 425 {
 426         .name = "uda1380",
 427         .stream_name = "UDA1380 Playback",
 428         .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
 429         .codec_dai = &uda1380_dai[UDA1380_DAI_PLAYBACK],
 430         .init = magician_uda1380_init,
 431         .ops = &magician_playback_ops,
 432 },
 433 {
 434         .name = "uda1380",
 435         .stream_name = "UDA1380 Capture",
 436         .cpu_dai = &pxa_i2s_dai,
 437         .codec_dai = &uda1380_dai[UDA1380_DAI_CAPTURE],
 438         .ops = &magician_capture_ops,
 439 }
 440 };
 441
 442 /* magician audio machine driver */
 443 static struct snd_soc_card snd_soc_card_magician = {
 444         .name = "Magician",
 445         .dai_link = magician_dai,
 446         .num_links = ARRAY_SIZE(magician_dai),
 447         .platform = &pxa2xx_soc_platform,
 448 };
 449
 450 /* magician audio private data */
 451 static struct uda1380_setup_data magician_uda1380_setup = {
 452         .i2c_address = 0x18,
 453         .dac_clk = UDA1380_DAC_CLK_WSPLL,
 454 };
 455
 456 /* magician audio subsystem */
 457 static struct snd_soc_device magician_snd_devdata = {
 458         .card = &snd_soc_card_magician,
 459         .codec_dev = &soc_codec_dev_uda1380,
 460         .codec_data = &magician_uda1380_setup,
 461 };
 462
 463 static struct platform_device *magician_snd_device;
 464
 465 static int __init magician_init(void)
 466 {
 467         int ret;
 468
 469         if (!machine_is_magician())
 470                 return -ENODEV;
 471
 472         ret = gpio_request(EGPIO_MAGICIAN_CODEC_POWER, "CODEC_POWER");
 473         if (ret)
 474                 goto err_request_power;
 475         ret = gpio_request(EGPIO_MAGICIAN_CODEC_RESET, "CODEC_RESET");
 476         if (ret)
 477                 goto err_request_reset;
 478         ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
 479         if (ret)
 480                 goto err_request_spk;
 481         ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
 482         if (ret)
 483                 goto err_request_ep;
 484         ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
 485         if (ret)
 486                 goto err_request_mic;
 487         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
 488         if (ret)
 489                 goto err_request_in_sel0;
 490         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
 491         if (ret)
 492                 goto err_request_in_sel1;
 493
 494         gpio_set_value(EGPIO_MAGICIAN_CODEC_POWER, 1);
 495         gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
 496
 497         /* we may need to have the clock running here - pH5 */
 498         gpio_set_value(EGPIO_MAGICIAN_CODEC_RESET, 1);
 499         udelay(5);
 500         gpio_set_value(EGPIO_MAGICIAN_CODEC_RESET, 0);
 501
 502         magician_snd_device = platform_device_alloc("soc-audio", -1);
 503         if (!magician_snd_device) {
 504                 ret = -ENOMEM;
 505                 goto err_pdev;
 506         }
 507
 508         platform_set_drvdata(magician_snd_device, &magician_snd_devdata);
 509         magician_snd_devdata.dev = &magician_snd_device->dev;
 510         ret = platform_device_add(magician_snd_device);
 511         if (ret) {
 512                 platform_device_put(magician_snd_device);
 513                 goto err_pdev;
 514         }
 515
 516         return 0;
 517
 518 err_pdev:
 519         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 520 err_request_in_sel1:
 521         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 522 err_request_in_sel0:
 523         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 524 err_request_mic:
 525         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 526 err_request_ep:
 527         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 528 err_request_spk:
 529         gpio_free(EGPIO_MAGICIAN_CODEC_RESET);
 530 err_request_reset:
 531         gpio_free(EGPIO_MAGICIAN_CODEC_POWER);
 532 err_request_power:
 533         return ret;
 534 }
 535
 536 static void __exit magician_exit(void)
 537 {
 538         platform_device_unregister(magician_snd_device);
 539
 540         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
 541         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
 542         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
 543         gpio_set_value(EGPIO_MAGICIAN_CODEC_POWER, 0);
 544
 545         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 546         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 547         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 548         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 549         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 550         gpio_free(EGPIO_MAGICIAN_CODEC_RESET);
 551         gpio_free(EGPIO_MAGICIAN_CODEC_POWER);
 552 }
 553
 554 module_init(magician_init);
 555 module_exit(magician_exit);
 556
 557 MODULE_AUTHOR("Philipp Zabel");
 558 MODULE_DESCRIPTION("ALSA SoC Magician");
 559 MODULE_LICENSE("GPL");