linux/sound/soc/intel/boards/bdw-rt5677.c
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   1/*
   2 * ASoC machine driver for Intel Broadwell platforms with RT5677 codec
   3 *
   4 * Copyright (c) 2014, The Chromium OS Authors.  All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19#include <linux/acpi.h>
  20#include <linux/module.h>
  21#include <linux/platform_device.h>
  22#include <linux/gpio/consumer.h>
  23#include <linux/delay.h>
  24#include <sound/core.h>
  25#include <sound/pcm.h>
  26#include <sound/soc.h>
  27#include <sound/pcm_params.h>
  28#include <sound/jack.h>
  29
  30#include "../common/sst-dsp.h"
  31#include "../haswell/sst-haswell-ipc.h"
  32
  33#include "../../codecs/rt5677.h"
  34
  35struct bdw_rt5677_priv {
  36        struct gpio_desc *gpio_hp_en;
  37        struct snd_soc_codec *codec;
  38};
  39
  40static int bdw_rt5677_event_hp(struct snd_soc_dapm_widget *w,
  41                        struct snd_kcontrol *k, int event)
  42{
  43        struct snd_soc_dapm_context *dapm = w->dapm;
  44        struct snd_soc_card *card = dapm->card;
  45        struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
  46
  47        if (SND_SOC_DAPM_EVENT_ON(event))
  48                msleep(70);
  49
  50        gpiod_set_value_cansleep(bdw_rt5677->gpio_hp_en,
  51                SND_SOC_DAPM_EVENT_ON(event));
  52
  53        return 0;
  54}
  55
  56static const struct snd_soc_dapm_widget bdw_rt5677_widgets[] = {
  57        SND_SOC_DAPM_HP("Headphone", bdw_rt5677_event_hp),
  58        SND_SOC_DAPM_SPK("Speaker", NULL),
  59        SND_SOC_DAPM_MIC("Headset Mic", NULL),
  60        SND_SOC_DAPM_MIC("Local DMICs", NULL),
  61        SND_SOC_DAPM_MIC("Remote DMICs", NULL),
  62};
  63
  64static const struct snd_soc_dapm_route bdw_rt5677_map[] = {
  65        /* Speakers */
  66        {"Speaker", NULL, "PDM1L"},
  67        {"Speaker", NULL, "PDM1R"},
  68
  69        /* Headset jack connectors */
  70        {"Headphone", NULL, "LOUT1"},
  71        {"Headphone", NULL, "LOUT2"},
  72        {"IN1P", NULL, "Headset Mic"},
  73        {"IN1N", NULL, "Headset Mic"},
  74
  75        /* Digital MICs
  76         * Local DMICs: the two DMICs on the mainboard
  77         * Remote DMICs: the two DMICs on the camera module
  78         */
  79        {"DMIC L1", NULL, "Remote DMICs"},
  80        {"DMIC R1", NULL, "Remote DMICs"},
  81        {"DMIC L2", NULL, "Local DMICs"},
  82        {"DMIC R2", NULL, "Local DMICs"},
  83
  84        /* CODEC BE connections */
  85        {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
  86        {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
  87};
  88
  89static const struct snd_kcontrol_new bdw_rt5677_controls[] = {
  90        SOC_DAPM_PIN_SWITCH("Speaker"),
  91        SOC_DAPM_PIN_SWITCH("Headphone"),
  92        SOC_DAPM_PIN_SWITCH("Headset Mic"),
  93        SOC_DAPM_PIN_SWITCH("Local DMICs"),
  94        SOC_DAPM_PIN_SWITCH("Remote DMICs"),
  95};
  96
  97
  98static struct snd_soc_jack headphone_jack;
  99static struct snd_soc_jack mic_jack;
 100
 101static struct snd_soc_jack_pin headphone_jack_pin = {
 102        .pin    = "Headphone",
 103        .mask   = SND_JACK_HEADPHONE,
 104};
 105
 106static struct snd_soc_jack_pin mic_jack_pin = {
 107        .pin    = "Headset Mic",
 108        .mask   = SND_JACK_MICROPHONE,
 109};
 110
 111static struct snd_soc_jack_gpio headphone_jack_gpio = {
 112        .name                   = "plug-det",
 113        .report                 = SND_JACK_HEADPHONE,
 114        .debounce_time          = 200,
 115};
 116
 117static struct snd_soc_jack_gpio mic_jack_gpio = {
 118        .name                   = "mic-present",
 119        .report                 = SND_JACK_MICROPHONE,
 120        .debounce_time          = 200,
 121        .invert                 = 1,
 122};
 123
 124/* GPIO indexes defined by ACPI */
 125enum {
 126        RT5677_GPIO_PLUG_DET            = 0,
 127        RT5677_GPIO_MIC_PRESENT_L       = 1,
 128        RT5677_GPIO_HOTWORD_DET_L       = 2,
 129        RT5677_GPIO_DSP_INT             = 3,
 130        RT5677_GPIO_HP_AMP_SHDN_L       = 4,
 131};
 132
 133static const struct acpi_gpio_params plug_det_gpio = { RT5677_GPIO_PLUG_DET, 0, false };
 134static const struct acpi_gpio_params mic_present_gpio = { RT5677_GPIO_MIC_PRESENT_L, 0, false };
 135static const struct acpi_gpio_params headphone_enable_gpio = { RT5677_GPIO_HP_AMP_SHDN_L, 0, false };
 136
 137static const struct acpi_gpio_mapping bdw_rt5677_gpios[] = {
 138        { "plug-det-gpios", &plug_det_gpio, 1 },
 139        { "mic-present-gpios", &mic_present_gpio, 1 },
 140        { "headphone-enable-gpios", &headphone_enable_gpio, 1 },
 141        { NULL },
 142};
 143
 144static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
 145                        struct snd_pcm_hw_params *params)
 146{
 147        struct snd_interval *rate = hw_param_interval(params,
 148                        SNDRV_PCM_HW_PARAM_RATE);
 149        struct snd_interval *channels = hw_param_interval(params,
 150                                                SNDRV_PCM_HW_PARAM_CHANNELS);
 151
 152        /* The ADSP will covert the FE rate to 48k, stereo */
 153        rate->min = rate->max = 48000;
 154        channels->min = channels->max = 2;
 155
 156        /* set SSP0 to 16 bit */
 157        snd_mask_set(&params->masks[SNDRV_PCM_HW_PARAM_FORMAT -
 158                                    SNDRV_PCM_HW_PARAM_FIRST_MASK],
 159                                    SNDRV_PCM_FORMAT_S16_LE);
 160        return 0;
 161}
 162
 163static int bdw_rt5677_hw_params(struct snd_pcm_substream *substream,
 164        struct snd_pcm_hw_params *params)
 165{
 166        struct snd_soc_pcm_runtime *rtd = substream->private_data;
 167        struct snd_soc_dai *codec_dai = rtd->codec_dai;
 168        int ret;
 169
 170        ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, 24576000,
 171                SND_SOC_CLOCK_IN);
 172        if (ret < 0) {
 173                dev_err(rtd->dev, "can't set codec sysclk configuration\n");
 174                return ret;
 175        }
 176
 177        return ret;
 178}
 179
 180static const struct snd_soc_ops bdw_rt5677_ops = {
 181        .hw_params = bdw_rt5677_hw_params,
 182};
 183
 184static int bdw_rt5677_rtd_init(struct snd_soc_pcm_runtime *rtd)
 185{
 186        struct sst_pdata *pdata = dev_get_platdata(rtd->platform->dev);
 187        struct sst_hsw *broadwell = pdata->dsp;
 188        int ret;
 189
 190        /* Set ADSP SSP port settings */
 191        ret = sst_hsw_device_set_config(broadwell, SST_HSW_DEVICE_SSP_0,
 192                SST_HSW_DEVICE_MCLK_FREQ_24_MHZ,
 193                SST_HSW_DEVICE_CLOCK_MASTER, 9);
 194        if (ret < 0) {
 195                dev_err(rtd->dev, "error: failed to set device config\n");
 196                return ret;
 197        }
 198
 199        return 0;
 200}
 201
 202static int bdw_rt5677_init(struct snd_soc_pcm_runtime *rtd)
 203{
 204        struct bdw_rt5677_priv *bdw_rt5677 =
 205                        snd_soc_card_get_drvdata(rtd->card);
 206        struct snd_soc_codec *codec = rtd->codec;
 207        struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 208        int ret;
 209
 210        ret = devm_acpi_dev_add_driver_gpios(codec->dev, bdw_rt5677_gpios);
 211        if (ret)
 212                dev_warn(codec->dev, "Failed to add driver gpios\n");
 213
 214        /* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
 215         * The ASRC clock source is clk_i2s1_asrc.
 216         */
 217        rt5677_sel_asrc_clk_src(codec, RT5677_DA_STEREO_FILTER |
 218                        RT5677_AD_STEREO1_FILTER | RT5677_I2S1_SOURCE,
 219                        RT5677_CLK_SEL_I2S1_ASRC);
 220
 221        /* Request rt5677 GPIO for headphone amp control */
 222        bdw_rt5677->gpio_hp_en = devm_gpiod_get(codec->dev, "headphone-enable",
 223                                                GPIOD_OUT_LOW);
 224        if (IS_ERR(bdw_rt5677->gpio_hp_en)) {
 225                dev_err(codec->dev, "Can't find HP_AMP_SHDN_L gpio\n");
 226                return PTR_ERR(bdw_rt5677->gpio_hp_en);
 227        }
 228
 229        /* Create and initialize headphone jack */
 230        if (!snd_soc_card_jack_new(rtd->card, "Headphone Jack",
 231                        SND_JACK_HEADPHONE, &headphone_jack,
 232                        &headphone_jack_pin, 1)) {
 233                headphone_jack_gpio.gpiod_dev = codec->dev;
 234                if (snd_soc_jack_add_gpios(&headphone_jack, 1,
 235                                &headphone_jack_gpio))
 236                        dev_err(codec->dev, "Can't add headphone jack gpio\n");
 237        } else {
 238                dev_err(codec->dev, "Can't create headphone jack\n");
 239        }
 240
 241        /* Create and initialize mic jack */
 242        if (!snd_soc_card_jack_new(rtd->card, "Mic Jack",
 243                        SND_JACK_MICROPHONE, &mic_jack,
 244                        &mic_jack_pin, 1)) {
 245                mic_jack_gpio.gpiod_dev = codec->dev;
 246                if (snd_soc_jack_add_gpios(&mic_jack, 1, &mic_jack_gpio))
 247                        dev_err(codec->dev, "Can't add mic jack gpio\n");
 248        } else {
 249                dev_err(codec->dev, "Can't create mic jack\n");
 250        }
 251        bdw_rt5677->codec = codec;
 252
 253        snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
 254        return 0;
 255}
 256
 257/* broadwell digital audio interface glue - connects codec <--> CPU */
 258static struct snd_soc_dai_link bdw_rt5677_dais[] = {
 259        /* Front End DAI links */
 260        {
 261                .name = "System PCM",
 262                .stream_name = "System Playback/Capture",
 263                .cpu_dai_name = "System Pin",
 264                .platform_name = "haswell-pcm-audio",
 265                .dynamic = 1,
 266                .codec_name = "snd-soc-dummy",
 267                .codec_dai_name = "snd-soc-dummy-dai",
 268                .init = bdw_rt5677_rtd_init,
 269                .trigger = {
 270                        SND_SOC_DPCM_TRIGGER_POST,
 271                        SND_SOC_DPCM_TRIGGER_POST
 272                },
 273                .dpcm_capture = 1,
 274                .dpcm_playback = 1,
 275        },
 276
 277        /* Back End DAI links */
 278        {
 279                /* SSP0 - Codec */
 280                .name = "Codec",
 281                .id = 0,
 282                .cpu_dai_name = "snd-soc-dummy-dai",
 283                .platform_name = "snd-soc-dummy",
 284                .no_pcm = 1,
 285                .codec_name = "i2c-RT5677CE:00",
 286                .codec_dai_name = "rt5677-aif1",
 287                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 288                        SND_SOC_DAIFMT_CBS_CFS,
 289                .ignore_suspend = 1,
 290                .ignore_pmdown_time = 1,
 291                .be_hw_params_fixup = broadwell_ssp0_fixup,
 292                .ops = &bdw_rt5677_ops,
 293                .dpcm_playback = 1,
 294                .dpcm_capture = 1,
 295                .init = bdw_rt5677_init,
 296        },
 297};
 298
 299static int bdw_rt5677_suspend_pre(struct snd_soc_card *card)
 300{
 301        struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
 302        struct snd_soc_dapm_context *dapm;
 303
 304        if (bdw_rt5677->codec) {
 305                dapm = snd_soc_codec_get_dapm(bdw_rt5677->codec);
 306                snd_soc_dapm_disable_pin(dapm, "MICBIAS1");
 307        }
 308        return 0;
 309}
 310
 311static int bdw_rt5677_resume_post(struct snd_soc_card *card)
 312{
 313        struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
 314        struct snd_soc_dapm_context *dapm;
 315
 316        if (bdw_rt5677->codec) {
 317                dapm = snd_soc_codec_get_dapm(bdw_rt5677->codec);
 318                snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
 319        }
 320        return 0;
 321}
 322
 323/* ASoC machine driver for Broadwell DSP + RT5677 */
 324static struct snd_soc_card bdw_rt5677_card = {
 325        .name = "bdw-rt5677",
 326        .owner = THIS_MODULE,
 327        .dai_link = bdw_rt5677_dais,
 328        .num_links = ARRAY_SIZE(bdw_rt5677_dais),
 329        .dapm_widgets = bdw_rt5677_widgets,
 330        .num_dapm_widgets = ARRAY_SIZE(bdw_rt5677_widgets),
 331        .dapm_routes = bdw_rt5677_map,
 332        .num_dapm_routes = ARRAY_SIZE(bdw_rt5677_map),
 333        .controls = bdw_rt5677_controls,
 334        .num_controls = ARRAY_SIZE(bdw_rt5677_controls),
 335        .fully_routed = true,
 336        .suspend_pre = bdw_rt5677_suspend_pre,
 337        .resume_post = bdw_rt5677_resume_post,
 338};
 339
 340static int bdw_rt5677_probe(struct platform_device *pdev)
 341{
 342        struct bdw_rt5677_priv *bdw_rt5677;
 343
 344        bdw_rt5677_card.dev = &pdev->dev;
 345
 346        /* Allocate driver private struct */
 347        bdw_rt5677 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5677_priv),
 348                GFP_KERNEL);
 349        if (!bdw_rt5677) {
 350                dev_err(&pdev->dev, "Can't allocate bdw_rt5677\n");
 351                return -ENOMEM;
 352        }
 353
 354        snd_soc_card_set_drvdata(&bdw_rt5677_card, bdw_rt5677);
 355
 356        return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5677_card);
 357}
 358
 359static struct platform_driver bdw_rt5677_audio = {
 360        .probe = bdw_rt5677_probe,
 361        .driver = {
 362                .name = "bdw-rt5677",
 363        },
 364};
 365
 366module_platform_driver(bdw_rt5677_audio)
 367
 368/* Module information */
 369MODULE_AUTHOR("Ben Zhang");
 370MODULE_DESCRIPTION("Intel Broadwell RT5677 machine driver");
 371MODULE_LICENSE("GPL v2");
 372MODULE_ALIAS("platform:bdw-rt5677");
 373