kernel/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_dapm_context *dapm)
  45 {
  46
  47         snd_soc_dapm_mutex_lock(dapm);
  48
  49         if (magician_spk_switch)
  50                 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
  51         else
  52                 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
  53         if (magician_hp_switch)
  54                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  55         else
  56                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  57
  58         switch (magician_in_sel) {
  59         case MAGICIAN_MIC:
  60                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Mic");
  61                 snd_soc_dapm_enable_pin_unlocked(dapm, "Call Mic");
  62                 break;
  63         case MAGICIAN_MIC_EXT:
  64                 snd_soc_dapm_disable_pin_unlocked(dapm, "Call Mic");
  65                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Mic");
  66                 break;
  67         }
  68
  69         snd_soc_dapm_sync_unlocked(dapm);
  70
  71         snd_soc_dapm_mutex_unlock(dapm);
  72 }
  73
  74 static int magician_startup(struct snd_pcm_substream *substream)
  75 {
  76         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  77
  78         /* check the jack status at stream startup */
  79         magician_ext_control(&rtd->card->dapm);
  80
  81         return 0;
  82 }
  83
  84 /*
  85  * Magician uses SSP port for playback.
  86  */
  87 static int magician_playback_hw_params(struct snd_pcm_substream *substream,
  88                                        struct snd_pcm_hw_params *params)
  89 {
  90         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  91         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  92         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  93         unsigned int acps, acds, width;
  94         unsigned int div4 = PXA_SSP_CLK_SCDB_4;
  95         int ret = 0;
  96
  97         width = snd_pcm_format_physical_width(params_format(params));
  98
  99         /*
 100          * rate = SSPSCLK / (2 * width(16 or 32))
 101          * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
 102          */
 103         switch (params_rate(params)) {
 104         case 8000:
 105                 /* off by a factor of 2: bug in the PXA27x audio clock? */
 106                 acps = 32842000;
 107                 switch (width) {
 108                 case 16:
 109                         /* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
 110                         acds = PXA_SSP_CLK_AUDIO_DIV_16;
 111                         break;
 112                 default: /* 32 */
 113                         /* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
 114                         acds = PXA_SSP_CLK_AUDIO_DIV_8;
 115                 }
 116                 break;
 117         case 11025:
 118                 acps = 5622000;
 119                 switch (width) {
 120                 case 16:
 121                         /* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
 122                         acds = PXA_SSP_CLK_AUDIO_DIV_4;
 123                         break;
 124                 default: /* 32 */
 125                         /* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
 126                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 127                 }
 128                 break;
 129         case 22050:
 130                 acps = 5622000;
 131                 switch (width) {
 132                 case 16:
 133                         /* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
 134                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 135                         break;
 136                 default: /* 32 */
 137                         /* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
 138                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 139                 }
 140                 break;
 141         case 44100:
 142                 acps = 5622000;
 143                 switch (width) {
 144                 case 16:
 145                         /* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
 146                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 147                         break;
 148                 default: /* 32 */
 149                         /* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
 150                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 151                 }
 152                 break;
 153         case 48000:
 154                 acps = 12235000;
 155                 switch (width) {
 156                 case 16:
 157                         /* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
 158                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 159                         break;
 160                 default: /* 32 */
 161                         /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
 162                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 163                 }
 164                 break;
 165         case 96000:
 166         default:
 167                 acps = 12235000;
 168                 switch (width) {
 169                 case 16:
 170                         /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
 171                         acds = PXA_SSP_CLK_AUDIO_DIV_1;
 172                         break;
 173                 default: /* 32 */
 174                         /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
 175                         acds = PXA_SSP_CLK_AUDIO_DIV_2;
 176                         div4 = PXA_SSP_CLK_SCDB_1;
 177                         break;
 178                 }
 179                 break;
 180         }
 181
 182         /* set codec DAI configuration */
 183         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
 184                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 185         if (ret < 0)
 186                 return ret;
 187
 188         /* set cpu DAI configuration */
 189         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 190                         SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_CBS_CFS);
 191         if (ret < 0)
 192                 return ret;
 193
 194         ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 0, 1, width);
 195         if (ret < 0)
 196                 return ret;
 197
 198         /* set audio clock as clock source */
 199         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
 200                         SND_SOC_CLOCK_OUT);
 201         if (ret < 0)
 202                 return ret;
 203
 204         /* set the SSP audio system clock ACDS divider */
 205         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 206                         PXA_SSP_AUDIO_DIV_ACDS, acds);
 207         if (ret < 0)
 208                 return ret;
 209
 210         /* set the SSP audio system clock SCDB divider4 */
 211         ret = snd_soc_dai_set_clkdiv(cpu_dai,
 212                         PXA_SSP_AUDIO_DIV_SCDB, div4);
 213         if (ret < 0)
 214                 return ret;
 215
 216         /* set SSP audio pll clock */
 217         ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, acps);
 218         if (ret < 0)
 219                 return ret;
 220
 221         return 0;
 222 }
 223
 224 /*
 225  * Magician uses I2S for capture.
 226  */
 227 static int magician_capture_hw_params(struct snd_pcm_substream *substream,
 228                                       struct snd_pcm_hw_params *params)
 229 {
 230         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 231         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 232         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 233         int ret = 0;
 234
 235         /* set codec DAI configuration */
 236         ret = snd_soc_dai_set_fmt(codec_dai,
 237                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 238                         SND_SOC_DAIFMT_CBS_CFS);
 239         if (ret < 0)
 240                 return ret;
 241
 242         /* set cpu DAI configuration */
 243         ret = snd_soc_dai_set_fmt(cpu_dai,
 244                         SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 245                         SND_SOC_DAIFMT_CBS_CFS);
 246         if (ret < 0)
 247                 return ret;
 248
 249         /* set the I2S system clock as output */
 250         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 251                         SND_SOC_CLOCK_OUT);
 252         if (ret < 0)
 253                 return ret;
 254
 255         return 0;
 256 }
 257
 258 static struct snd_soc_ops magician_capture_ops = {
 259         .startup = magician_startup,
 260         .hw_params = magician_capture_hw_params,
 261 };
 262
 263 static struct snd_soc_ops magician_playback_ops = {
 264         .startup = magician_startup,
 265         .hw_params = magician_playback_hw_params,
 266 };
 267
 268 static int magician_get_hp(struct snd_kcontrol *kcontrol,
 269                              struct snd_ctl_elem_value *ucontrol)
 270 {
 271         ucontrol->value.integer.value[0] = magician_hp_switch;
 272         return 0;
 273 }
 274
 275 static int magician_set_hp(struct snd_kcontrol *kcontrol,
 276                              struct snd_ctl_elem_value *ucontrol)
 277 {
 278         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 279
 280         if (magician_hp_switch == ucontrol->value.integer.value[0])
 281                 return 0;
 282
 283         magician_hp_switch = ucontrol->value.integer.value[0];
 284         magician_ext_control(&card->dapm);
 285         return 1;
 286 }
 287
 288 static int magician_get_spk(struct snd_kcontrol *kcontrol,
 289                             struct snd_ctl_elem_value *ucontrol)
 290 {
 291         ucontrol->value.integer.value[0] = magician_spk_switch;
 292         return 0;
 293 }
 294
 295 static int magician_set_spk(struct snd_kcontrol *kcontrol,
 296                             struct snd_ctl_elem_value *ucontrol)
 297 {
 298         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 299
 300         if (magician_spk_switch == ucontrol->value.integer.value[0])
 301                 return 0;
 302
 303         magician_spk_switch = ucontrol->value.integer.value[0];
 304         magician_ext_control(&card->dapm);
 305         return 1;
 306 }
 307
 308 static int magician_get_input(struct snd_kcontrol *kcontrol,
 309                               struct snd_ctl_elem_value *ucontrol)
 310 {
 311         ucontrol->value.integer.value[0] = magician_in_sel;
 312         return 0;
 313 }
 314
 315 static int magician_set_input(struct snd_kcontrol *kcontrol,
 316                               struct snd_ctl_elem_value *ucontrol)
 317 {
 318         if (magician_in_sel == ucontrol->value.integer.value[0])
 319                 return 0;
 320
 321         magician_in_sel = ucontrol->value.integer.value[0];
 322
 323         switch (magician_in_sel) {
 324         case MAGICIAN_MIC:
 325                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
 326                 break;
 327         case MAGICIAN_MIC_EXT:
 328                 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
 329         }
 330
 331         return 1;
 332 }
 333
 334 static int magician_spk_power(struct snd_soc_dapm_widget *w,
 335                                 struct snd_kcontrol *k, int event)
 336 {
 337         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
 338         return 0;
 339 }
 340
 341 static int magician_hp_power(struct snd_soc_dapm_widget *w,
 342                                 struct snd_kcontrol *k, int event)
 343 {
 344         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
 345         return 0;
 346 }
 347
 348 static int magician_mic_bias(struct snd_soc_dapm_widget *w,
 349                                 struct snd_kcontrol *k, int event)
 350 {
 351         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
 352         return 0;
 353 }
 354
 355 /* magician machine dapm widgets */
 356 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 357         SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
 358         SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
 359         SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
 360         SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
 361 };
 362
 363 /* magician machine audio_map */
 364 static const struct snd_soc_dapm_route audio_map[] = {
 365
 366         /* Headphone connected to VOUTL, VOUTR */
 367         {"Headphone Jack", NULL, "VOUTL"},
 368         {"Headphone Jack", NULL, "VOUTR"},
 369
 370         /* Speaker connected to VOUTL, VOUTR */
 371         {"Speaker", NULL, "VOUTL"},
 372         {"Speaker", NULL, "VOUTR"},
 373
 374         /* Mics are connected to VINM */
 375         {"VINM", NULL, "Headset Mic"},
 376         {"VINM", NULL, "Call Mic"},
 377 };
 378
 379 static const char *input_select[] = {"Call Mic", "Headset Mic"};
 380 static const struct soc_enum magician_in_sel_enum =
 381         SOC_ENUM_SINGLE_EXT(2, input_select);
 382
 383 static const struct snd_kcontrol_new uda1380_magician_controls[] = {
 384         SOC_SINGLE_BOOL_EXT("Headphone Switch",
 385                         (unsigned long)&magician_hp_switch,
 386                         magician_get_hp, magician_set_hp),
 387         SOC_SINGLE_BOOL_EXT("Speaker Switch",
 388                         (unsigned long)&magician_spk_switch,
 389                         magician_get_spk, magician_set_spk),
 390         SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
 391                         magician_get_input, magician_set_input),
 392 };
 393
 394 /* magician digital audio interface glue - connects codec <--> CPU */
 395 static struct snd_soc_dai_link magician_dai[] = {
 396 {
 397         .name = "uda1380",
 398         .stream_name = "UDA1380 Playback",
 399         .cpu_dai_name = "pxa-ssp-dai.0",
 400         .codec_dai_name = "uda1380-hifi-playback",
 401         .platform_name = "pxa-pcm-audio",
 402         .codec_name = "uda1380-codec.0-0018",
 403         .ops = &magician_playback_ops,
 404 },
 405 {
 406         .name = "uda1380",
 407         .stream_name = "UDA1380 Capture",
 408         .cpu_dai_name = "pxa2xx-i2s",
 409         .codec_dai_name = "uda1380-hifi-capture",
 410         .platform_name = "pxa-pcm-audio",
 411         .codec_name = "uda1380-codec.0-0018",
 412         .ops = &magician_capture_ops,
 413 }
 414 };
 415
 416 /* magician audio machine driver */
 417 static struct snd_soc_card snd_soc_card_magician = {
 418         .name = "Magician",
 419         .owner = THIS_MODULE,
 420         .dai_link = magician_dai,
 421         .num_links = ARRAY_SIZE(magician_dai),
 422
 423         .controls = uda1380_magician_controls,
 424         .num_controls = ARRAY_SIZE(uda1380_magician_controls),
 425         .dapm_widgets = uda1380_dapm_widgets,
 426         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 427         .dapm_routes = audio_map,
 428         .num_dapm_routes = ARRAY_SIZE(audio_map),
 429         .fully_routed = true,
 430 };
 431
 432 static struct platform_device *magician_snd_device;
 433
 434 /*
 435  * FIXME: move into magician board file once merged into the pxa tree
 436  */
 437 static struct uda1380_platform_data uda1380_info = {
 438         .gpio_power = EGPIO_MAGICIAN_CODEC_POWER,
 439         .gpio_reset = EGPIO_MAGICIAN_CODEC_RESET,
 440         .dac_clk    = UDA1380_DAC_CLK_WSPLL,
 441 };
 442
 443 static struct i2c_board_info i2c_board_info[] = {
 444         {
 445                 I2C_BOARD_INFO("uda1380", 0x18),
 446                 .platform_data = &uda1380_info,
 447         },
 448 };
 449
 450 static int __init magician_init(void)
 451 {
 452         int ret;
 453         struct i2c_adapter *adapter;
 454         struct i2c_client *client;
 455
 456         if (!machine_is_magician())
 457                 return -ENODEV;
 458
 459         adapter = i2c_get_adapter(0);
 460         if (!adapter)
 461                 return -ENODEV;
 462         client = i2c_new_device(adapter, i2c_board_info);
 463         i2c_put_adapter(adapter);
 464         if (!client)
 465                 return -ENODEV;
 466
 467         ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
 468         if (ret)
 469                 goto err_request_spk;
 470         ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
 471         if (ret)
 472                 goto err_request_ep;
 473         ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
 474         if (ret)
 475                 goto err_request_mic;
 476         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
 477         if (ret)
 478                 goto err_request_in_sel0;
 479         ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
 480         if (ret)
 481                 goto err_request_in_sel1;
 482
 483         gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
 484
 485         magician_snd_device = platform_device_alloc("soc-audio", -1);
 486         if (!magician_snd_device) {
 487                 ret = -ENOMEM;
 488                 goto err_pdev;
 489         }
 490
 491         platform_set_drvdata(magician_snd_device, &snd_soc_card_magician);
 492         ret = platform_device_add(magician_snd_device);
 493         if (ret) {
 494                 platform_device_put(magician_snd_device);
 495                 goto err_pdev;
 496         }
 497
 498         return 0;
 499
 500 err_pdev:
 501         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 502 err_request_in_sel1:
 503         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 504 err_request_in_sel0:
 505         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 506 err_request_mic:
 507         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 508 err_request_ep:
 509         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 510 err_request_spk:
 511         return ret;
 512 }
 513
 514 static void __exit magician_exit(void)
 515 {
 516         platform_device_unregister(magician_snd_device);
 517
 518         gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
 519         gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
 520         gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
 521
 522         gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 523         gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 524         gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 525         gpio_free(EGPIO_MAGICIAN_EP_POWER);
 526         gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 527 }
 528
 529 module_init(magician_init);
 530 module_exit(magician_exit);
 531
 532 MODULE_AUTHOR("Philipp Zabel");
 533 MODULE_DESCRIPTION("ALSA SoC Magician");
 534 MODULE_LICENSE("GPL");