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