linux/sound/soc/pxa/magician.c
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   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
  40static int magician_hp_switch;
  41static int magician_spk_switch = 1;
  42static int magician_in_sel = MAGICIAN_MIC;
  43
  44static 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
  74static 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 */
  87static 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 */
 227static 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
 258static struct snd_soc_ops magician_capture_ops = {
 259        .startup = magician_startup,
 260        .hw_params = magician_capture_hw_params,
 261};
 262
 263static struct snd_soc_ops magician_playback_ops = {
 264        .startup = magician_startup,
 265        .hw_params = magician_playback_hw_params,
 266};
 267
 268static 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
 275static 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
 288static 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
 295static 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
 308static int magician_get_input(struct snd_kcontrol *kcontrol,
 309                              struct snd_ctl_elem_value *ucontrol)
 310{
 311        ucontrol->value.enumerated.item[0] = magician_in_sel;
 312        return 0;
 313}
 314
 315static int magician_set_input(struct snd_kcontrol *kcontrol,
 316                              struct snd_ctl_elem_value *ucontrol)
 317{
 318        if (magician_in_sel == ucontrol->value.enumerated.item[0])
 319                return 0;
 320
 321        magician_in_sel = ucontrol->value.enumerated.item[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
 334static 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
 341static 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
 348static 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 */
 356static 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 */
 364static 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
 379static const char * const input_select[] = {"Call Mic", "Headset Mic"};
 380static const struct soc_enum magician_in_sel_enum =
 381        SOC_ENUM_SINGLE_EXT(2, input_select);
 382
 383static 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 */
 395static 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 */
 417static 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
 432static struct platform_device *magician_snd_device;
 433
 434/*
 435 * FIXME: move into magician board file once merged into the pxa tree
 436 */
 437static 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
 443static struct i2c_board_info i2c_board_info[] = {
 444        {
 445                I2C_BOARD_INFO("uda1380", 0x18),
 446                .platform_data = &uda1380_info,
 447        },
 448};
 449
 450static 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
 500err_pdev:
 501        gpio_free(EGPIO_MAGICIAN_IN_SEL1);
 502err_request_in_sel1:
 503        gpio_free(EGPIO_MAGICIAN_IN_SEL0);
 504err_request_in_sel0:
 505        gpio_free(EGPIO_MAGICIAN_MIC_POWER);
 506err_request_mic:
 507        gpio_free(EGPIO_MAGICIAN_EP_POWER);
 508err_request_ep:
 509        gpio_free(EGPIO_MAGICIAN_SPK_POWER);
 510err_request_spk:
 511        return ret;
 512}
 513
 514static 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
 529module_init(magician_init);
 530module_exit(magician_exit);
 531
 532MODULE_AUTHOR("Philipp Zabel");
 533MODULE_DESCRIPTION("ALSA SoC Magician");
 534MODULE_LICENSE("GPL");
 535