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/soc-dapm.h>
  30 #include <sound/uda1380.h>
  31
  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                 default: /* 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                 default: /* 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                 default: /* 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                 default: /* 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                 default: /* 32 */
 160                         /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
 161                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 162                 }
 163                 break;
 164         case 96000:
 165         default:
 166                 acps = 12235000;
 167                 switch (width) {
 168                 case 16:
 169                         /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
 170                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 171                         break;
 172                 default: /* 32 */
 173                         /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
 174                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 175                         div4 = PXA_SSP_CLK_SCDB_1;
 176                         break;
 177                 }
 178                 break;
 179         }
 180
 181         /* set codec DAI configuration */
 182         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
 183                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 184         if (ret < 0)
 185                 return ret;
 186
 187         /* set cpu DAI configuration */
 188         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 189                         SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_CBS_CFS);
 190         if (ret < 0)
 191                 return ret;
 192
 193         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 0, 1, width);
 194         if (ret < 0)
 195                 return ret;
 196
 197         /* set audio clock as clock source */
 198         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
 199                         SND_SOC_CLOCK_OUT);
 200         if (ret < 0)
 201                 return ret;
 202
 203         /* set the SSP audio system clock ACDS divider */
 204         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 205                         PXA_SSP_AUDIO_DIV_ACDS, acds);
 206         if (ret < 0)
 207                 return ret;
 208
 209         /* set the SSP audio system clock SCDB divider4 */
 210         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 211                         PXA_SSP_AUDIO_DIV_SCDB, div4);
 212         if (ret < 0)
 213                 return ret;
 214
 215         /* set SSP audio pll clock */
 216         ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, acps);
 217         if (ret < 0)
 218                 return ret;
 219
 220         return 0;
 221 }
 222
 223 /*
 224  * Magician uses I2S for capture.
 225  */
 226 static int magician_capture_hw_params(struct snd_pcm_substream *substream,
 227                                       struct snd_pcm_hw_params *params)
 228 {
 229         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 230         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 231         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 232         int ret = 0;
 233
 234         /* set codec DAI configuration */
 235         ret = snd_soc_dai_set_fmt(codec_dai,
 236                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 237                         SND_SOC_DAIFMT_CBS_CFS);
 238         if (ret < 0)
 239                 return ret;
 240
 241         /* set cpu DAI configuration */
 242         ret = snd_soc_dai_set_fmt(cpu_dai,
 243                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 244                         SND_SOC_DAIFMT_CBS_CFS);
 245         if (ret < 0)
 246                 return ret;
 247
 248         /* set the I2S system clock as output */
 249         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 250                         SND_SOC_CLOCK_OUT);
 251         if (ret < 0)
 252                 return ret;
 253
 254         return 0;
 255 }
 256
 257 static struct snd_soc_ops magician_capture_ops = {
 258         .startup = magician_startup,
 259         .hw_params = magician_capture_hw_params,
 260 };
 261
 262 static struct snd_soc_ops magician_playback_ops = {
 263         .startup = magician_startup,
 264         .hw_params = magician_playback_hw_params,
 265 };
 266
 267 static int magician_get_hp(struct snd_kcontrol *kcontrol,
 268                              struct snd_ctl_elem_value *ucontrol)
 269 {
 270         ucontrol->value.integer.value[0] = magician_hp_switch;
 271         return 0;
 272 }
 273
 274 static int magician_set_hp(struct snd_kcontrol *kcontrol,
 275                              struct snd_ctl_elem_value *ucontrol)
 276 {
 277         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 278
 279         if (magician_hp_switch == ucontrol->value.integer.value[0])
 280                 return 0;
 281
 282         magician_hp_switch = ucontrol->value.integer.value[0];
 283         magician_ext_control(codec);
 284         return 1;
 285 }
 286
 287 static int magician_get_spk(struct snd_kcontrol *kcontrol,
 288                             struct snd_ctl_elem_value *ucontrol)
 289 {
 290         ucontrol->value.integer.value[0] = magician_spk_switch;
 291         return 0;
 292 }
 293
 294 static int magician_set_spk(struct snd_kcontrol *kcontrol,
 295                             struct snd_ctl_elem_value *ucontrol)
 296 {
 297         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 298
 299         if (magician_spk_switch == ucontrol->value.integer.value[0])
 300                 return 0;
 301
 302         magician_spk_switch = ucontrol->value.integer.value[0];
 303         magician_ext_control(codec);
 304         return 1;
 305 }
 306
 307 static int magician_get_input(struct snd_kcontrol *kcontrol,
 308                               struct snd_ctl_elem_value *ucontrol)
 309 {
 310         ucontrol->value.integer.value[0] = magician_in_sel;
 311         return 0;
 312 }
 313
 314 static int magician_set_input(struct snd_kcontrol *kcontrol,
 315                               struct snd_ctl_elem_value *ucontrol)
 316 {
 317         if (magician_in_sel == ucontrol->value.integer.value[0])
 318                 return 0;
 319
 320         magician_in_sel = ucontrol->value.integer.value[0];
 321
 322         switch (magician_in_sel) {
 323         case MAGICIAN_MIC:
 324                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
 325                 break;
 326         case MAGICIAN_MIC_EXT:
 327                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
 328         }
 329
 330         return 1;
 331 }
 332
 333 static int magician_spk_power(struct snd_soc_dapm_widget *w,
 334                                 struct snd_kcontrol *k, int event)
 335 {
 336         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
 337         return 0;
 338 }
 339
 340 static int magician_hp_power(struct snd_soc_dapm_widget *w,
 341                                 struct snd_kcontrol *k, int event)
 342 {
 343         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
 344         return 0;
 345 }
 346
 347 static int magician_mic_bias(struct snd_soc_dapm_widget *w,
 348                                 struct snd_kcontrol *k, int event)
 349 {
 350         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
 351         return 0;
 352 }
 353
 354 /* magician machine dapm widgets */
 355 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 356         SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
 357         SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
 358         SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
 359         SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
 360 };
 361
 362 /* magician machine audio_map */
 363 static const struct snd_soc_dapm_route audio_map[] = {
 364
 365         /* Headphone connected to VOUTL, VOUTR */
 366         {"Headphone Jack", NULL, "VOUTL"},
 367         {"Headphone Jack", NULL, "VOUTR"},
 368
 369         /* Speaker connected to VOUTL, VOUTR */
 370         {"Speaker", NULL, "VOUTL"},
 371         {"Speaker", NULL, "VOUTR"},
 372
 373         /* Mics are connected to VINM */
 374         {"VINM", NULL, "Headset Mic"},
 375         {"VINM", NULL, "Call Mic"},
 376 };
 377
 378 static const char *input_select[] = {"Call Mic", "Headset Mic"};
 379 static const struct soc_enum magician_in_sel_enum =
 380         SOC_ENUM_SINGLE_EXT(2, input_select);
 381
 382 static const struct snd_kcontrol_new uda1380_magician_controls[] = {
 383         SOC_SINGLE_BOOL_EXT("Headphone Switch",
 384                         (unsigned long)&magician_hp_switch,
 385                         magician_get_hp, magician_set_hp),
 386         SOC_SINGLE_BOOL_EXT("Speaker Switch",
 387                         (unsigned long)&magician_spk_switch,
 388                         magician_get_spk, magician_set_spk),
 389         SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
 390                         magician_get_input, magician_set_input),
 391 };
 392
 393 /*
 394  * Logic for a uda1380 as connected on a HTC Magician
 395  */
 396 static int magician_uda1380_init(struct snd_soc_codec *codec)
 397 {
 398         int err;
 399
 400         /* NC codec pins */
 401         snd_soc_dapm_nc_pin(codec, "VOUTLHP");
 402         snd_soc_dapm_nc_pin(codec, "VOUTRHP");
 403
 404         /* FIXME: is anything connected here? */
 405         snd_soc_dapm_nc_pin(codec, "VINL");
 406         snd_soc_dapm_nc_pin(codec, "VINR");
 407
 408         /* Add magician specific controls */
 409         err = snd_soc_add_controls(codec, uda1380_magician_controls,
 410                                 ARRAY_SIZE(uda1380_magician_controls));
 411         if (err < 0)
 412                 return err;
 413
 414         /* Add magician specific widgets */
 415         snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
 416                                   ARRAY_SIZE(uda1380_dapm_widgets));
 417
 418         /* Set up magician specific audio path interconnects */
 419         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 420
 421         snd_soc_dapm_sync(codec);
 422         return 0;
 423 }
 424
 425 /* magician digital audio interface glue - connects codec <--> CPU */
 426 static struct snd_soc_dai_link magician_dai[] = {
 427 {
 428         .name = "uda1380",
 429         .stream_name = "UDA1380 Playback",
 430         .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
 431         .codec_dai = &uda1380_dai[UDA1380_DAI_PLAYBACK],
 432         .init = magician_uda1380_init,
 433         .ops = &magician_playback_ops,
 434 },
 435 {
 436         .name = "uda1380",
 437         .stream_name = "UDA1380 Capture",
 438         .cpu_dai = &pxa_i2s_dai,
 439         .codec_dai = &uda1380_dai[UDA1380_DAI_CAPTURE],
 440         .ops = &magician_capture_ops,
 441 }
 442 };
 443
 444 /* magician audio machine driver */
 445 static struct snd_soc_card snd_soc_card_magician = {
 446         .name = "Magician",
 447         .dai_link = magician_dai,
 448         .num_links = ARRAY_SIZE(magician_dai),
 449         .platform = &pxa2xx_soc_platform,
 450 };
 451
 452 /* magician audio subsystem */
 453 static struct snd_soc_device magician_snd_devdata = {
 454         .card = &snd_soc_card_magician,
 455         .codec_dev = &soc_codec_dev_uda1380,
 456 };
 457
 458 static struct platform_device *magician_snd_device;
 459
 460 /*
 461  * FIXME: move into magician board file once merged into the pxa tree
 462  */
 463 static struct uda1380_platform_data uda1380_info = {
 464         .gpio_power = EGPIO_MAGICIAN_CODEC_POWER,
 465         .gpio_reset = EGPIO_MAGICIAN_CODEC_RESET,
 466         .dac_clk    = UDA1380_DAC_CLK_WSPLL,
 467 };
 468
 469 static struct i2c_board_info i2c_board_info[] = {
 470         {
 471                 I2C_BOARD_INFO("uda1380", 0x18),
 472                 .platform_data = &uda1380_info,
 473         },
 474 };
 475
 476 static int __init magician_init(void)
 477 {
 478         int ret;
 479         struct i2c_adapter *adapter;
 480         struct i2c_client *client;
 481
 482         if (!machine_is_magician())
 483                 return -ENODEV;
 484
 485         adapter = i2c_get_adapter(0);
 486         if (!adapter)
 487                 return -ENODEV;
 488         client = i2c_new_device(adapter, i2c_board_info);
 489         i2c_put_adapter(adapter);
 490         if (!client)
 491                 return -ENODEV;
 492
 493         ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
 494         if (ret)
 495                 goto err_request_spk;
 496         ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
 497         if (ret)
 498                 goto err_request_ep;
 499         ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
 500         if (ret)
 501                 goto err_request_mic;
 502         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
 503         if (ret)
 504                 goto err_request_in_sel0;
 505         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
 506         if (ret)
 507                 goto err_request_in_sel1;
 508
 509         gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
 510
 511         magician_snd_device = platform_device_alloc("soc-audio", -1);
 512         if (!magician_snd_device) {
 513                 ret = -ENOMEM;
 514                 goto err_pdev;
 515         }
 516
 517         platform_set_drvdata(magician_snd_device, &magician_snd_devdata);
 518         magician_snd_devdata.dev = &magician_snd_device->dev;
 519         ret = platform_device_add(magician_snd_device);
 520         if (ret) {
 521                 platform_device_put(magician_snd_device);
 522                 goto err_pdev;
 523         }
 524
 525         return 0;
 526
 527 err_pdev:
 528         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 529 err_request_in_sel1:
 530         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 531 err_request_in_sel0:
 532         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 533 err_request_mic:
 534         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 535 err_request_ep:
 536         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 537 err_request_spk:
 538         return ret;
 539 }
 540
 541 static void __exit magician_exit(void)
 542 {
 543         platform_device_unregister(magician_snd_device);
 544
 545         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
 546         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
 547         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
 548
 549         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 550         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 551         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 552         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 553         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 554 }
 555
 556 module_init(magician_init);
 557 module_exit(magician_exit);
 558
 559 MODULE_AUTHOR("Philipp Zabel");
 560 MODULE_DESCRIPTION("ALSA SoC Magician");
 561 MODULE_LICENSE("GPL");