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