LXR linux/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
  42static int magician_hp_switch;
  43static int magician_spk_switch = 1;
  44static int magician_in_sel = MAGICIAN_MIC;
  45
  46static 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
  71static 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 */
  85static 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, acps);
 217        if (ret < 0)
 218                return ret;
 219
 220        return 0;
 221}
 222
 223/*
 224 * Magician uses I2S for capture.
 225 */
 226static 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
 257static struct snd_soc_ops magician_capture_ops = {
 258        .startup = magician_startup,
 259        .hw_params = magician_capture_hw_params,
 260};
 261
 262static struct snd_soc_ops magician_playback_ops = {
 263        .startup = magician_startup,
 264        .hw_params = magician_playback_hw_params,
 265};
 266
 267static 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
 274static 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
 287static 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
 294static 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
 307static 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
 314static 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
 333static 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
 340static 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
 347static 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 */
 355static 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 */
 363static 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
 378static const char *input_select[] = {"Call Mic", "Headset Mic"};
 379static const struct soc_enum magician_in_sel_enum =
 380        SOC_ENUM_SINGLE_EXT(2, input_select);
 381
 382static 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 */
 396static 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 */
 426static 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 */
 445static 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 */
 453static struct snd_soc_device magician_snd_devdata = {
 454        .card = &snd_soc_card_magician,
 455        .codec_dev = &soc_codec_dev_uda1380,
 456};
 457
 458static struct platform_device *magician_snd_device;
 459
 460/*
 461 * FIXME: move into magician board file once merged into the pxa tree
 462 */
 463static 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
 469static struct i2c_board_info i2c_board_info[] = {
 470        {
 471                I2C_BOARD_INFO("uda1380", 0x18),
 472                .platform_data = &uda1380_info,
 473        },
 474};
 475
 476static 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
 527err_pdev:
 528        gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 529err_request_in_sel1:
 530        gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 531err_request_in_sel0:
 532        gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 533err_request_mic:
 534        gpio_free(EGPIO_MAGICIAN_EP_POWER);
 535err_request_ep:
 536        gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 537err_request_spk:
 538        return ret;
 539}
 540
 541static 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
 556module_init(magician_init);
 557module_exit(magician_exit);
 558
 559MODULE_AUTHOR("Philipp Zabel");
 560MODULE_DESCRIPTION("ALSA SoC Magician");
 561MODULE_LICENSE("GPL");
 562