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