sound/soc/qcom/sc7280.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
   4 //
   5 // ALSA SoC Machine driver for sc7280
   6
   7 #include <dt-bindings/sound/qcom,lpass.h>
   8 #include <dt-bindings/sound/qcom,q6afe.h>
   9 #include <linux/input.h>
  10 #include <linux/mod_devicetable.h>
  11 #include <linux/module.h>
  12 #include <linux/platform_device.h>
  13 #include <sound/core.h>
  14 #include <sound/jack.h>
  15 #include <sound/pcm.h>
  16 #include <sound/soc.h>
  17 #include <sound/rt5682s.h>
  18 #include <linux/soundwire/sdw.h>
  19 #include <sound/pcm_params.h>
  20
  21 #include "../codecs/rt5682.h"
  22 #include "../codecs/rt5682s.h"
  23 #include "common.h"
  24 #include "lpass.h"
  25 #include "qdsp6/q6afe.h"
  26 #include "sdw.h"
  27
  28 #define DEFAULT_MCLK_RATE              19200000
  29 #define RT5682_PLL_FREQ (48000 * 512)
  30 #define MI2S_BCLK_RATE          1536000
  31
  32 struct sc7280_snd_data {
  33         struct snd_soc_card card;
  34         struct sdw_stream_runtime *sruntime[LPASS_MAX_PORTS];
  35         u32 pri_mi2s_clk_count;
  36         struct snd_soc_jack hs_jack;
  37         struct snd_soc_jack hdmi_jack;
  38         bool jack_setup;
  39         bool stream_prepared[LPASS_MAX_PORTS];
  40 };
  41
  42 static void sc7280_jack_free(struct snd_jack *jack)
  43 {
  44         struct snd_soc_component *component = jack->private_data;
  45
  46         snd_soc_component_set_jack(component, NULL, NULL);
  47 }
  48
  49 static struct snd_soc_jack_pin sc7280_jack_pins[] = {
  50         {
  51                 .pin = "Headphone Jack",
  52                 .mask = SND_JACK_HEADPHONE,
  53         },
  54         {
  55                 .pin = "Headset Mic",
  56                 .mask = SND_JACK_MICROPHONE,
  57         },
  58 };
  59
  60 static int sc7280_headset_init(struct snd_soc_pcm_runtime *rtd)
  61 {
  62         struct snd_soc_card *card = rtd->card;
  63         struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
  64         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
  65         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  66         struct snd_soc_component *component = codec_dai->component;
  67         struct snd_jack *jack;
  68         int rval, i;
  69
  70         if (!pdata->jack_setup) {
  71                 rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
  72                                                   SND_JACK_HEADSET | SND_JACK_LINEOUT |
  73                                                   SND_JACK_MECHANICAL |
  74                                                   SND_JACK_BTN_0 | SND_JACK_BTN_1 |
  75                                                   SND_JACK_BTN_2 | SND_JACK_BTN_3 |
  76                                                   SND_JACK_BTN_4 | SND_JACK_BTN_5,
  77                                                   &pdata->hs_jack,
  78                                                   sc7280_jack_pins,
  79                                                   ARRAY_SIZE(sc7280_jack_pins));
  80
  81                 if (rval < 0) {
  82                         dev_err(card->dev, "Unable to add Headset Jack\n");
  83                         return rval;
  84                 }
  85
  86                 jack = pdata->hs_jack.jack;
  87
  88                 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
  89                 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
  90                 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
  91                 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
  92
  93                 jack->private_data = component;
  94                 jack->private_free = sc7280_jack_free;
  95                 pdata->jack_setup = true;
  96         }
  97         switch (cpu_dai->id) {
  98         case MI2S_PRIMARY:
  99         case LPASS_CDC_DMA_RX0:
 100         case LPASS_CDC_DMA_TX3:
 101         case TX_CODEC_DMA_TX_3:
 102                 for_each_rtd_codec_dais(rtd, i, codec_dai) {
 103                         rval = snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
 104                         if (rval != 0 && rval != -ENOTSUPP) {
 105                                 dev_err(card->dev, "Failed to set jack: %d\n", rval);
 106                                 return rval;
 107                         }
 108                 }
 109                 break;
 110         default:
 111                 break;
 112         }
 113
 114         return 0;
 115 }
 116
 117 static int sc7280_hdmi_init(struct snd_soc_pcm_runtime *rtd)
 118 {
 119         struct snd_soc_card *card = rtd->card;
 120         struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
 121         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 122         struct snd_soc_component *component = codec_dai->component;
 123         struct snd_jack *jack;
 124         int rval;
 125
 126         rval = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT,
 127                                      &pdata->hdmi_jack);
 128
 129         if (rval < 0) {
 130                 dev_err(card->dev, "Unable to add HDMI Jack\n");
 131                 return rval;
 132         }
 133
 134         jack = pdata->hdmi_jack.jack;
 135         jack->private_data = component;
 136         jack->private_free = sc7280_jack_free;
 137
 138         return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
 139 }
 140
 141 static int sc7280_rt5682_init(struct snd_soc_pcm_runtime *rtd)
 142 {
 143         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 144         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 145         struct snd_soc_card *card = rtd->card;
 146         struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
 147         int ret;
 148
 149         if (++data->pri_mi2s_clk_count == 1) {
 150                 snd_soc_dai_set_sysclk(cpu_dai,
 151                         LPASS_MCLK0,
 152                         DEFAULT_MCLK_RATE,
 153                         SNDRV_PCM_STREAM_PLAYBACK);
 154         }
 155         snd_soc_dai_set_fmt(codec_dai,
 156                                 SND_SOC_DAIFMT_CBC_CFC |
 157                                 SND_SOC_DAIFMT_NB_NF |
 158                                 SND_SOC_DAIFMT_I2S);
 159
 160         ret = snd_soc_dai_set_pll(codec_dai, RT5682S_PLL2, RT5682S_PLL_S_MCLK,
 161                                         DEFAULT_MCLK_RATE, RT5682_PLL_FREQ);
 162         if (ret) {
 163                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 164                 return ret;
 165         }
 166
 167         ret = snd_soc_dai_set_sysclk(codec_dai, RT5682S_SCLK_S_PLL2,
 168                                         RT5682_PLL_FREQ,
 169                                         SND_SOC_CLOCK_IN);
 170
 171         if (ret) {
 172                 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
 173                         ret);
 174                 return ret;
 175         }
 176
 177         return 0;
 178 }
 179
 180 static int sc7280_init(struct snd_soc_pcm_runtime *rtd)
 181 {
 182         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 183
 184         switch (cpu_dai->id) {
 185         case MI2S_PRIMARY:
 186         case LPASS_CDC_DMA_TX3:
 187         case TX_CODEC_DMA_TX_3:
 188                 return sc7280_headset_init(rtd);
 189         case LPASS_CDC_DMA_RX0:
 190         case LPASS_CDC_DMA_VA_TX0:
 191         case MI2S_SECONDARY:
 192         case RX_CODEC_DMA_RX_0:
 193         case SECONDARY_MI2S_RX:
 194         case VA_CODEC_DMA_TX_0:
 195                 return 0;
 196         case LPASS_DP_RX:
 197                 return sc7280_hdmi_init(rtd);
 198         default:
 199                 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 200         }
 201
 202         return -EINVAL;
 203 }
 204
 205 static int sc7280_snd_hw_params(struct snd_pcm_substream *substream,
 206                                 struct snd_pcm_hw_params *params)
 207 {
 208         struct snd_pcm_runtime *runtime = substream->runtime;
 209         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 210         struct snd_soc_dai *codec_dai;
 211         const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 212         struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 213         struct sdw_stream_runtime *sruntime;
 214         int i;
 215
 216         if (!rtd->dai_link->no_pcm) {
 217                 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
 218                 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, 48000, 48000);
 219         }
 220
 221         switch (cpu_dai->id) {
 222         case LPASS_CDC_DMA_TX3:
 223         case LPASS_CDC_DMA_RX0:
 224         case RX_CODEC_DMA_RX_0:
 225         case SECONDARY_MI2S_RX:
 226         case TX_CODEC_DMA_TX_3:
 227         case VA_CODEC_DMA_TX_0:
 228                 for_each_rtd_codec_dais(rtd, i, codec_dai) {
 229                         sruntime = snd_soc_dai_get_stream(codec_dai, substream->stream);
 230                         if (sruntime != ERR_PTR(-ENOTSUPP))
 231                                 pdata->sruntime[cpu_dai->id] = sruntime;
 232                 }
 233                 break;
 234         }
 235
 236         return 0;
 237 }
 238
 239 static int sc7280_snd_swr_prepare(struct snd_pcm_substream *substream)
 240 {
 241         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 242         const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 243         struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 244         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 245         int ret;
 246
 247         if (!sruntime)
 248                 return 0;
 249
 250         if (data->stream_prepared[cpu_dai->id]) {
 251                 sdw_disable_stream(sruntime);
 252                 sdw_deprepare_stream(sruntime);
 253                 data->stream_prepared[cpu_dai->id] = false;
 254         }
 255
 256         ret = sdw_prepare_stream(sruntime);
 257         if (ret)
 258                 return ret;
 259
 260         ret = sdw_enable_stream(sruntime);
 261         if (ret) {
 262                 sdw_deprepare_stream(sruntime);
 263                 return ret;
 264         }
 265         data->stream_prepared[cpu_dai->id] = true;
 266
 267         return ret;
 268 }
 269
 270 static int sc7280_snd_prepare(struct snd_pcm_substream *substream)
 271 {
 272         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 273         const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 274
 275         switch (cpu_dai->id) {
 276         case LPASS_CDC_DMA_RX0:
 277         case LPASS_CDC_DMA_TX3:
 278         case RX_CODEC_DMA_RX_0:
 279         case TX_CODEC_DMA_TX_3:
 280         case VA_CODEC_DMA_TX_0:
 281                 return sc7280_snd_swr_prepare(substream);
 282         default:
 283                 break;
 284         }
 285
 286         return 0;
 287 }
 288
 289 static int sc7280_snd_hw_free(struct snd_pcm_substream *substream)
 290 {
 291         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 292         struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 293         const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 294         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 295
 296         switch (cpu_dai->id) {
 297         case LPASS_CDC_DMA_RX0:
 298         case LPASS_CDC_DMA_TX3:
 299         case RX_CODEC_DMA_RX_0:
 300         case TX_CODEC_DMA_TX_3:
 301         case VA_CODEC_DMA_TX_0:
 302                 if (sruntime && data->stream_prepared[cpu_dai->id]) {
 303                         sdw_disable_stream(sruntime);
 304                         sdw_deprepare_stream(sruntime);
 305                         data->stream_prepared[cpu_dai->id] = false;
 306                 }
 307                 break;
 308         default:
 309                 break;
 310         }
 311         return 0;
 312 }
 313
 314 static void sc7280_snd_shutdown(struct snd_pcm_substream *substream)
 315 {
 316         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 317         struct snd_soc_card *card = rtd->card;
 318         struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
 319         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 320         struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
 321
 322         switch (cpu_dai->id) {
 323         case MI2S_PRIMARY:
 324                 if (--data->pri_mi2s_clk_count == 0) {
 325                         snd_soc_dai_set_sysclk(cpu_dai,
 326                                                LPASS_MCLK0,
 327                                                0,
 328                                                SNDRV_PCM_STREAM_PLAYBACK);
 329                 }
 330                 break;
 331         case SECONDARY_MI2S_RX:
 332                 snd_soc_dai_set_sysclk(cpu_dai, Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 333                                                0, SNDRV_PCM_STREAM_PLAYBACK);
 334                 break;
 335         default:
 336                 break;
 337         }
 338
 339         data->sruntime[cpu_dai->id] = NULL;
 340         sdw_release_stream(sruntime);
 341 }
 342
 343 static int sc7280_snd_startup(struct snd_pcm_substream *substream)
 344 {
 345         unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
 346         unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
 347         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 348         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 349         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 350         int ret = 0;
 351
 352         switch (cpu_dai->id) {
 353         case MI2S_PRIMARY:
 354                 ret = sc7280_rt5682_init(rtd);
 355                 if (ret)
 356                         return ret;
 357                 break;
 358         case SECONDARY_MI2S_RX:
 359                 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
 360
 361                 snd_soc_dai_set_sysclk(cpu_dai, Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 362                         MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 363
 364                 snd_soc_dai_set_fmt(cpu_dai, fmt);
 365                 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 366                 break;
 367         default:
 368                 break;
 369         }
 370
 371         return qcom_snd_sdw_startup(substream);
 372 }
 373
 374 static const struct snd_soc_ops sc7280_ops = {
 375         .startup = sc7280_snd_startup,
 376         .hw_params = sc7280_snd_hw_params,
 377         .hw_free = sc7280_snd_hw_free,
 378         .prepare = sc7280_snd_prepare,
 379         .shutdown = sc7280_snd_shutdown,
 380 };
 381
 382 static const struct snd_soc_dapm_widget sc7280_snd_widgets[] = {
 383         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 384         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 385 };
 386
 387 static const struct snd_kcontrol_new sc7280_snd_controls[] = {
 388         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 389         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 390 };
 391
 392 static int sc7280_snd_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 393                                          struct snd_pcm_hw_params *params)
 394 {
 395         struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 396         struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 397         struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 398
 399         rate->min = rate->max = 48000;
 400         channels->min = channels->max = 2;
 401         snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
 402
 403         return 0;
 404 }
 405
 406 static int sc7280_snd_platform_probe(struct platform_device *pdev)
 407 {
 408         struct snd_soc_card *card;
 409         struct sc7280_snd_data *data;
 410         struct device *dev = &pdev->dev;
 411         struct snd_soc_dai_link *link;
 412         int ret, i;
 413
 414         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 415         if (!data)
 416                 return -ENOMEM;
 417
 418         card = &data->card;
 419         snd_soc_card_set_drvdata(card, data);
 420
 421         card->owner = THIS_MODULE;
 422         card->driver_name = "SC7280";
 423         card->dev = dev;
 424
 425         card->dapm_widgets = sc7280_snd_widgets;
 426         card->num_dapm_widgets = ARRAY_SIZE(sc7280_snd_widgets);
 427         card->controls = sc7280_snd_controls;
 428         card->num_controls = ARRAY_SIZE(sc7280_snd_controls);
 429
 430         ret = qcom_snd_parse_of(card);
 431         if (ret)
 432                 return ret;
 433
 434         for_each_card_prelinks(card, i, link) {
 435                 link->init = sc7280_init;
 436                 link->ops = &sc7280_ops;
 437                 if (link->no_pcm == 1)
 438                         link->be_hw_params_fixup = sc7280_snd_be_hw_params_fixup;
 439         }
 440
 441         return devm_snd_soc_register_card(dev, card);
 442 }
 443
 444 static const struct of_device_id sc7280_snd_device_id[]  = {
 445         { .compatible = "google,sc7280-herobrine" },
 446         {}
 447 };
 448 MODULE_DEVICE_TABLE(of, sc7280_snd_device_id);
 449
 450 static struct platform_driver sc7280_snd_driver = {
 451         .probe = sc7280_snd_platform_probe,
 452         .driver = {
 453                 .name = "msm-snd-sc7280",
 454                 .of_match_table = sc7280_snd_device_id,
 455                 .pm = &snd_soc_pm_ops,
 456         },
 457 };
 458 module_platform_driver(sc7280_snd_driver);
 459
 460 MODULE_DESCRIPTION("sc7280 ASoC Machine Driver");
 461 MODULE_LICENSE("GPL");