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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 // Copyright(c) 2018-19 Canonical Corporation.
0003 
0004 /*
0005  * Intel Kabylake I2S Machine Driver with RT5660 Codec
0006  *
0007  * Modified from:
0008  *   Intel Kabylake I2S Machine driver supporting MAXIM98357a and
0009  *   DA7219 codecs
0010  * Also referred to:
0011  *   Intel Broadwell I2S Machine driver supporting RT5677 codec
0012  */
0013 
0014 #include <linux/module.h>
0015 #include <linux/platform_device.h>
0016 #include <linux/gpio/consumer.h>
0017 #include <linux/acpi.h>
0018 #include <sound/core.h>
0019 #include <sound/jack.h>
0020 #include <sound/pcm.h>
0021 #include <sound/pcm_params.h>
0022 #include <sound/soc.h>
0023 
0024 #include "../../codecs/hdac_hdmi.h"
0025 #include "../../codecs/rt5660.h"
0026 
0027 #define KBL_RT5660_CODEC_DAI "rt5660-aif1"
0028 #define DUAL_CHANNEL 2
0029 
0030 static struct snd_soc_card *kabylake_audio_card;
0031 static struct snd_soc_jack skylake_hdmi[3];
0032 static struct snd_soc_jack lineout_jack;
0033 static struct snd_soc_jack mic_jack;
0034 
0035 struct kbl_hdmi_pcm {
0036     struct list_head head;
0037     struct snd_soc_dai *codec_dai;
0038     int device;
0039 };
0040 
0041 struct kbl_codec_private {
0042     struct gpio_desc *gpio_lo_mute;
0043     struct list_head hdmi_pcm_list;
0044 };
0045 
0046 enum {
0047     KBL_DPCM_AUDIO_PB = 0,
0048     KBL_DPCM_AUDIO_CP,
0049     KBL_DPCM_AUDIO_HDMI1_PB,
0050     KBL_DPCM_AUDIO_HDMI2_PB,
0051     KBL_DPCM_AUDIO_HDMI3_PB,
0052 };
0053 
0054 #define GPIO_LINEOUT_MUTE_INDEX 0
0055 #define GPIO_LINEOUT_DET_INDEX 3
0056 #define GPIO_LINEIN_DET_INDEX 4
0057 
0058 static const struct acpi_gpio_params lineout_mute_gpio = { GPIO_LINEOUT_MUTE_INDEX, 0, true };
0059 static const struct acpi_gpio_params lineout_det_gpio = { GPIO_LINEOUT_DET_INDEX, 0, false };
0060 static const struct acpi_gpio_params mic_det_gpio = { GPIO_LINEIN_DET_INDEX, 0, false };
0061 
0062 
0063 static const struct acpi_gpio_mapping acpi_rt5660_gpios[] = {
0064     { "lineout-mute-gpios", &lineout_mute_gpio, 1 },
0065     { "lineout-det-gpios", &lineout_det_gpio, 1 },
0066     { "mic-det-gpios", &mic_det_gpio, 1 },
0067     { NULL },
0068 };
0069 
0070 static struct snd_soc_jack_pin lineout_jack_pin = {
0071     .pin    = "Line Out",
0072     .mask   = SND_JACK_LINEOUT,
0073 };
0074 
0075 static struct snd_soc_jack_pin mic_jack_pin = {
0076     .pin    = "Line In",
0077     .mask   = SND_JACK_MICROPHONE,
0078 };
0079 
0080 static struct snd_soc_jack_gpio lineout_jack_gpio = {
0081     .name           = "lineout-det",
0082     .report         = SND_JACK_LINEOUT,
0083     .debounce_time      = 200,
0084 };
0085 
0086 static struct snd_soc_jack_gpio mic_jack_gpio = {
0087     .name           = "mic-det",
0088     .report         = SND_JACK_MICROPHONE,
0089     .debounce_time      = 200,
0090 };
0091 
0092 static int kabylake_5660_event_lineout(struct snd_soc_dapm_widget *w,
0093             struct snd_kcontrol *k, int event)
0094 {
0095     struct snd_soc_dapm_context *dapm = w->dapm;
0096     struct kbl_codec_private *priv = snd_soc_card_get_drvdata(dapm->card);
0097 
0098     gpiod_set_value_cansleep(priv->gpio_lo_mute,
0099             !(SND_SOC_DAPM_EVENT_ON(event)));
0100 
0101     return 0;
0102 }
0103 
0104 static const struct snd_kcontrol_new kabylake_rt5660_controls[] = {
0105     SOC_DAPM_PIN_SWITCH("Line In"),
0106     SOC_DAPM_PIN_SWITCH("Line Out"),
0107 };
0108 
0109 static const struct snd_soc_dapm_widget kabylake_rt5660_widgets[] = {
0110     SND_SOC_DAPM_MIC("Line In", NULL),
0111     SND_SOC_DAPM_LINE("Line Out", kabylake_5660_event_lineout),
0112 };
0113 
0114 static const struct snd_soc_dapm_route kabylake_rt5660_map[] = {
0115     /* other jacks */
0116     {"IN1P", NULL, "Line In"},
0117     {"IN2P", NULL, "Line In"},
0118     {"Line Out", NULL, "LOUTR"},
0119     {"Line Out", NULL, "LOUTL"},
0120 
0121     /* CODEC BE connections */
0122     { "AIF1 Playback", NULL, "ssp0 Tx"},
0123     { "ssp0 Tx", NULL, "codec0_out"},
0124 
0125     { "codec0_in", NULL, "ssp0 Rx" },
0126     { "ssp0 Rx", NULL, "AIF1 Capture" },
0127 
0128     { "hifi1", NULL, "iDisp1 Tx"},
0129     { "iDisp1 Tx", NULL, "iDisp1_out"},
0130     { "hifi2", NULL, "iDisp2 Tx"},
0131     { "iDisp2 Tx", NULL, "iDisp2_out"},
0132     { "hifi3", NULL, "iDisp3 Tx"},
0133     { "iDisp3 Tx", NULL, "iDisp3_out"},
0134 };
0135 
0136 static int kabylake_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
0137             struct snd_pcm_hw_params *params)
0138 {
0139     struct snd_interval *rate = hw_param_interval(params,
0140             SNDRV_PCM_HW_PARAM_RATE);
0141     struct snd_interval *chan = hw_param_interval(params,
0142             SNDRV_PCM_HW_PARAM_CHANNELS);
0143     struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
0144 
0145     /* The ADSP will convert the FE rate to 48k, stereo */
0146     rate->min = rate->max = 48000;
0147     chan->min = chan->max = DUAL_CHANNEL;
0148 
0149     /* set SSP0 to 24 bit */
0150     snd_mask_none(fmt);
0151     snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
0152 
0153     return 0;
0154 }
0155 
0156 static int kabylake_rt5660_codec_init(struct snd_soc_pcm_runtime *rtd)
0157 {
0158     int ret;
0159     struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card);
0160     struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
0161     struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
0162 
0163     ret = devm_acpi_dev_add_driver_gpios(component->dev, acpi_rt5660_gpios);
0164     if (ret)
0165         dev_warn(component->dev, "Failed to add driver gpios\n");
0166 
0167     /* Request rt5660 GPIO for lineout mute control, return if fails */
0168     ctx->gpio_lo_mute = gpiod_get(component->dev, "lineout-mute",
0169                       GPIOD_OUT_HIGH);
0170     if (IS_ERR(ctx->gpio_lo_mute)) {
0171         dev_err(component->dev, "Can't find GPIO_MUTE# gpio\n");
0172         return PTR_ERR(ctx->gpio_lo_mute);
0173     }
0174 
0175     /* Create and initialize headphone jack, this jack is not mandatory, don't return if fails */
0176     ret = snd_soc_card_jack_new_pins(rtd->card, "Lineout Jack",
0177                      SND_JACK_LINEOUT, &lineout_jack,
0178                      &lineout_jack_pin, 1);
0179     if (ret)
0180         dev_warn(component->dev, "Can't create Lineout jack\n");
0181     else {
0182         lineout_jack_gpio.gpiod_dev = component->dev;
0183         ret = snd_soc_jack_add_gpios(&lineout_jack, 1,
0184                          &lineout_jack_gpio);
0185         if (ret)
0186             dev_warn(component->dev, "Can't add Lineout jack gpio\n");
0187     }
0188 
0189     /* Create and initialize mic jack, this jack is not mandatory, don't return if fails */
0190     ret = snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
0191                      SND_JACK_MICROPHONE, &mic_jack,
0192                      &mic_jack_pin, 1);
0193     if (ret)
0194         dev_warn(component->dev, "Can't create mic jack\n");
0195     else {
0196         mic_jack_gpio.gpiod_dev = component->dev;
0197         ret = snd_soc_jack_add_gpios(&mic_jack, 1, &mic_jack_gpio);
0198         if (ret)
0199             dev_warn(component->dev, "Can't add mic jack gpio\n");
0200     }
0201 
0202     /* Here we enable some dapms in advance to reduce the pop noise for recording via line-in */
0203     snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
0204     snd_soc_dapm_force_enable_pin(dapm, "BST1");
0205     snd_soc_dapm_force_enable_pin(dapm, "BST2");
0206 
0207     return 0;
0208 }
0209 
0210 static void kabylake_rt5660_codec_exit(struct snd_soc_pcm_runtime *rtd)
0211 {
0212     struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card);
0213 
0214     /*
0215      * The .exit() can be reached without going through the .init()
0216      * so explicitly test if the gpiod is valid
0217      */
0218     if (!IS_ERR_OR_NULL(ctx->gpio_lo_mute))
0219         gpiod_put(ctx->gpio_lo_mute);
0220 }
0221 
0222 static int kabylake_hdmi_init(struct snd_soc_pcm_runtime *rtd, int device)
0223 {
0224     struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(rtd->card);
0225     struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0);
0226     struct kbl_hdmi_pcm *pcm;
0227 
0228     pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
0229     if (!pcm)
0230         return -ENOMEM;
0231 
0232     pcm->device = device;
0233     pcm->codec_dai = dai;
0234 
0235     list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
0236 
0237     return 0;
0238 }
0239 
0240 static int kabylake_hdmi1_init(struct snd_soc_pcm_runtime *rtd)
0241 {
0242     return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI1_PB);
0243 }
0244 
0245 static int kabylake_hdmi2_init(struct snd_soc_pcm_runtime *rtd)
0246 {
0247     return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI2_PB);
0248 }
0249 
0250 static int kabylake_hdmi3_init(struct snd_soc_pcm_runtime *rtd)
0251 {
0252     return kabylake_hdmi_init(rtd, KBL_DPCM_AUDIO_HDMI3_PB);
0253 }
0254 
0255 static int kabylake_rt5660_hw_params(struct snd_pcm_substream *substream,
0256     struct snd_pcm_hw_params *params)
0257 {
0258     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0259     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
0260     int ret;
0261 
0262     ret = snd_soc_dai_set_sysclk(codec_dai,
0263                      RT5660_SCLK_S_PLL1, params_rate(params) * 512,
0264                      SND_SOC_CLOCK_IN);
0265     if (ret < 0) {
0266         dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret);
0267         return ret;
0268     }
0269 
0270     ret = snd_soc_dai_set_pll(codec_dai, 0,
0271                   RT5660_PLL1_S_BCLK,
0272                   params_rate(params) * 50,
0273                   params_rate(params) * 512);
0274     if (ret < 0)
0275         dev_err(codec_dai->dev, "can't set codec pll: %d\n", ret);
0276 
0277     return ret;
0278 }
0279 
0280 static struct snd_soc_ops kabylake_rt5660_ops = {
0281     .hw_params = kabylake_rt5660_hw_params,
0282 };
0283 
0284 static const unsigned int rates[] = {
0285     48000,
0286 };
0287 
0288 static const struct snd_pcm_hw_constraint_list constraints_rates = {
0289     .count = ARRAY_SIZE(rates),
0290     .list  = rates,
0291     .mask = 0,
0292 };
0293 
0294 static const unsigned int channels[] = {
0295     DUAL_CHANNEL,
0296 };
0297 
0298 static const struct snd_pcm_hw_constraint_list constraints_channels = {
0299     .count = ARRAY_SIZE(channels),
0300     .list = channels,
0301     .mask = 0,
0302 };
0303 
0304 static int kbl_fe_startup(struct snd_pcm_substream *substream)
0305 {
0306     struct snd_pcm_runtime *runtime = substream->runtime;
0307 
0308     /*
0309      * On this platform for PCM device we support,
0310      * 48Khz
0311      * stereo
0312      * 16 bit audio
0313      */
0314 
0315     runtime->hw.channels_max = DUAL_CHANNEL;
0316     snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
0317                        &constraints_channels);
0318 
0319     runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
0320     snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
0321 
0322     snd_pcm_hw_constraint_list(runtime, 0,
0323                 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
0324 
0325     return 0;
0326 }
0327 
0328 static const struct snd_soc_ops kabylake_rt5660_fe_ops = {
0329     .startup = kbl_fe_startup,
0330 };
0331 
0332 SND_SOC_DAILINK_DEF(dummy,
0333     DAILINK_COMP_ARRAY(COMP_DUMMY()));
0334 
0335 SND_SOC_DAILINK_DEF(system,
0336     DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
0337 
0338 SND_SOC_DAILINK_DEF(hdmi1,
0339     DAILINK_COMP_ARRAY(COMP_CPU("HDMI1 Pin")));
0340 
0341 SND_SOC_DAILINK_DEF(hdmi2,
0342     DAILINK_COMP_ARRAY(COMP_CPU("HDMI2 Pin")));
0343 
0344 SND_SOC_DAILINK_DEF(hdmi3,
0345     DAILINK_COMP_ARRAY(COMP_CPU("HDMI3 Pin")));
0346 
0347 SND_SOC_DAILINK_DEF(ssp0_pin,
0348     DAILINK_COMP_ARRAY(COMP_CPU("SSP0 Pin")));
0349 SND_SOC_DAILINK_DEF(ssp0_codec,
0350     DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC3277:00", KBL_RT5660_CODEC_DAI)));
0351 
0352 SND_SOC_DAILINK_DEF(idisp1_pin,
0353             DAILINK_COMP_ARRAY(COMP_CPU("iDisp1 Pin")));
0354 SND_SOC_DAILINK_DEF(idisp1_codec,
0355     DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi1")));
0356 
0357 SND_SOC_DAILINK_DEF(idisp2_pin,
0358     DAILINK_COMP_ARRAY(COMP_CPU("iDisp2 Pin")));
0359 SND_SOC_DAILINK_DEF(idisp2_codec,
0360     DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi2")));
0361 
0362 SND_SOC_DAILINK_DEF(idisp3_pin,
0363     DAILINK_COMP_ARRAY(COMP_CPU("iDisp3 Pin")));
0364 SND_SOC_DAILINK_DEF(idisp3_codec,
0365     DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi3")));
0366 
0367 SND_SOC_DAILINK_DEF(platform,
0368     DAILINK_COMP_ARRAY(COMP_PLATFORM("0000:00:1f.3")));
0369 
0370 /* kabylake digital audio interface glue - connects rt5660 codec <--> CPU */
0371 static struct snd_soc_dai_link kabylake_rt5660_dais[] = {
0372     /* Front End DAI links */
0373     [KBL_DPCM_AUDIO_PB] = {
0374         .name = "Kbl Audio Port",
0375         .stream_name = "Audio",
0376         .dynamic = 1,
0377         .nonatomic = 1,
0378         .trigger = {
0379             SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
0380         .dpcm_playback = 1,
0381         .ops = &kabylake_rt5660_fe_ops,
0382         SND_SOC_DAILINK_REG(system, dummy, platform),
0383     },
0384     [KBL_DPCM_AUDIO_CP] = {
0385         .name = "Kbl Audio Capture Port",
0386         .stream_name = "Audio Record",
0387         .dynamic = 1,
0388         .nonatomic = 1,
0389         .trigger = {
0390             SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
0391         .dpcm_capture = 1,
0392         .ops = &kabylake_rt5660_fe_ops,
0393         SND_SOC_DAILINK_REG(system, dummy, platform),
0394     },
0395     [KBL_DPCM_AUDIO_HDMI1_PB] = {
0396         .name = "Kbl HDMI Port1",
0397         .stream_name = "Hdmi1",
0398         .dpcm_playback = 1,
0399         .init = NULL,
0400         .trigger = {
0401             SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
0402         .nonatomic = 1,
0403         .dynamic = 1,
0404         SND_SOC_DAILINK_REG(hdmi1, dummy, platform),
0405     },
0406     [KBL_DPCM_AUDIO_HDMI2_PB] = {
0407         .name = "Kbl HDMI Port2",
0408         .stream_name = "Hdmi2",
0409         .dpcm_playback = 1,
0410         .init = NULL,
0411         .trigger = {
0412             SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
0413         .nonatomic = 1,
0414         .dynamic = 1,
0415         SND_SOC_DAILINK_REG(hdmi2, dummy, platform),
0416     },
0417     [KBL_DPCM_AUDIO_HDMI3_PB] = {
0418         .name = "Kbl HDMI Port3",
0419         .stream_name = "Hdmi3",
0420         .trigger = {
0421             SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
0422         .dpcm_playback = 1,
0423         .init = NULL,
0424         .nonatomic = 1,
0425         .dynamic = 1,
0426         SND_SOC_DAILINK_REG(hdmi3, dummy, platform),
0427     },
0428 
0429     /* Back End DAI links */
0430     {
0431         /* SSP0 - Codec */
0432         .name = "SSP0-Codec",
0433         .id = 0,
0434         .no_pcm = 1,
0435         .init = kabylake_rt5660_codec_init,
0436         .exit = kabylake_rt5660_codec_exit,
0437         .dai_fmt = SND_SOC_DAIFMT_I2S |
0438         SND_SOC_DAIFMT_NB_NF |
0439         SND_SOC_DAIFMT_CBC_CFC,
0440         .ignore_pmdown_time = 1,
0441         .be_hw_params_fixup = kabylake_ssp0_fixup,
0442         .ops = &kabylake_rt5660_ops,
0443         .dpcm_playback = 1,
0444         .dpcm_capture = 1,
0445         SND_SOC_DAILINK_REG(ssp0_pin, ssp0_codec, platform),
0446     },
0447     {
0448         .name = "iDisp1",
0449         .id = 1,
0450         .dpcm_playback = 1,
0451         .init = kabylake_hdmi1_init,
0452         .no_pcm = 1,
0453         SND_SOC_DAILINK_REG(idisp1_pin, idisp1_codec, platform),
0454     },
0455     {
0456         .name = "iDisp2",
0457         .id = 2,
0458         .init = kabylake_hdmi2_init,
0459         .dpcm_playback = 1,
0460         .no_pcm = 1,
0461         SND_SOC_DAILINK_REG(idisp2_pin, idisp2_codec, platform),
0462     },
0463     {
0464         .name = "iDisp3",
0465         .id = 3,
0466         .init = kabylake_hdmi3_init,
0467         .dpcm_playback = 1,
0468         .no_pcm = 1,
0469         SND_SOC_DAILINK_REG(idisp3_pin, idisp3_codec, platform),
0470     },
0471 };
0472 
0473 
0474 #define NAME_SIZE   32
0475 static int kabylake_card_late_probe(struct snd_soc_card *card)
0476 {
0477     struct kbl_codec_private *ctx = snd_soc_card_get_drvdata(card);
0478     struct kbl_hdmi_pcm *pcm;
0479     struct snd_soc_component *component = NULL;
0480     int err, i = 0;
0481     char jack_name[NAME_SIZE];
0482 
0483     list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
0484         component = pcm->codec_dai->component;
0485         snprintf(jack_name, sizeof(jack_name),
0486             "HDMI/DP, pcm=%d Jack", pcm->device);
0487         err = snd_soc_card_jack_new(card, jack_name,
0488                     SND_JACK_AVOUT, &skylake_hdmi[i]);
0489 
0490         if (err)
0491             return err;
0492 
0493         err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
0494                 &skylake_hdmi[i]);
0495         if (err < 0)
0496             return err;
0497 
0498         i++;
0499 
0500     }
0501 
0502     if (!component)
0503         return -EINVAL;
0504 
0505     return hdac_hdmi_jack_port_init(component, &card->dapm);
0506 }
0507 
0508 /* kabylake audio machine driver for rt5660 */
0509 static struct snd_soc_card kabylake_audio_card_rt5660 = {
0510     .name = "kblrt5660",
0511     .owner = THIS_MODULE,
0512     .dai_link = kabylake_rt5660_dais,
0513     .num_links = ARRAY_SIZE(kabylake_rt5660_dais),
0514     .controls = kabylake_rt5660_controls,
0515     .num_controls = ARRAY_SIZE(kabylake_rt5660_controls),
0516     .dapm_widgets = kabylake_rt5660_widgets,
0517     .num_dapm_widgets = ARRAY_SIZE(kabylake_rt5660_widgets),
0518     .dapm_routes = kabylake_rt5660_map,
0519     .num_dapm_routes = ARRAY_SIZE(kabylake_rt5660_map),
0520     .fully_routed = true,
0521     .late_probe = kabylake_card_late_probe,
0522 };
0523 
0524 static int kabylake_audio_probe(struct platform_device *pdev)
0525 {
0526     struct kbl_codec_private *ctx;
0527 
0528     ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
0529     if (!ctx)
0530         return -ENOMEM;
0531 
0532     INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
0533 
0534     kabylake_audio_card =
0535         (struct snd_soc_card *)pdev->id_entry->driver_data;
0536 
0537     kabylake_audio_card->dev = &pdev->dev;
0538     snd_soc_card_set_drvdata(kabylake_audio_card, ctx);
0539     return devm_snd_soc_register_card(&pdev->dev, kabylake_audio_card);
0540 }
0541 
0542 static const struct platform_device_id kbl_board_ids[] = {
0543     {
0544         .name = "kbl_rt5660",
0545         .driver_data =
0546             (kernel_ulong_t)&kabylake_audio_card_rt5660,
0547     },
0548     { }
0549 };
0550 MODULE_DEVICE_TABLE(platform, kbl_board_ids);
0551 
0552 static struct platform_driver kabylake_audio = {
0553     .probe = kabylake_audio_probe,
0554     .driver = {
0555         .name = "kbl_rt5660",
0556         .pm = &snd_soc_pm_ops,
0557     },
0558     .id_table = kbl_board_ids,
0559 };
0560 
0561 module_platform_driver(kabylake_audio)
0562 
0563 /* Module information */
0564 MODULE_DESCRIPTION("Audio Machine driver-RT5660 in I2S mode");
0565 MODULE_AUTHOR("Hui Wang <hui.wang@canonical.com>");
0566 MODULE_LICENSE("GPL v2");
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