sound/soc/codecs/hda.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
   4 //
   5 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
   6 //
   7
   8 #include <linux/module.h>
   9 #include <linux/pm_runtime.h>
  10 #include <sound/soc.h>
  11 #include <sound/hdaudio_ext.h>
  12 #include <sound/hda_i915.h>
  13 #include <sound/hda_codec.h>
  14 #include "hda.h"
  15
  16 static int hda_codec_create_dais(struct hda_codec *codec, int pcm_count,
  17                                  struct snd_soc_dai_driver **drivers)
  18 {
  19         struct device *dev = &codec->core.dev;
  20         struct snd_soc_dai_driver *drvs;
  21         struct hda_pcm *pcm;
  22         int i;
  23
  24         drvs = devm_kcalloc(dev, pcm_count, sizeof(*drvs), GFP_KERNEL);
  25         if (!drvs)
  26                 return -ENOMEM;
  27
  28         pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list);
  29
  30         for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) {
  31                 struct snd_soc_pcm_stream *stream;
  32                 int dir;
  33
  34                 dev_info(dev, "creating for %s %d\n", pcm->name, i);
  35                 drvs[i].id = i;
  36                 drvs[i].name = pcm->name;
  37                 drvs[i].ops = &snd_soc_hda_codec_dai_ops;
  38
  39                 dir = SNDRV_PCM_STREAM_PLAYBACK;
  40                 stream = &drvs[i].playback;
  41                 if (!pcm->stream[dir].substreams) {
  42                         dev_info(dev, "skipping playback dai for %s\n", pcm->name);
  43                         goto capture_dais;
  44                 }
  45
  46                 stream->stream_name =
  47                         devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name,
  48                                        snd_pcm_direction_name(dir));
  49                 if (!stream->stream_name)
  50                         return -ENOMEM;
  51                 stream->channels_min = pcm->stream[dir].channels_min;
  52                 stream->channels_max = pcm->stream[dir].channels_max;
  53                 stream->rates = pcm->stream[dir].rates;
  54                 stream->formats = pcm->stream[dir].formats;
  55                 stream->subformats = pcm->stream[dir].subformats;
  56                 stream->sig_bits = pcm->stream[dir].maxbps;
  57
  58 capture_dais:
  59                 dir = SNDRV_PCM_STREAM_CAPTURE;
  60                 stream = &drvs[i].capture;
  61                 if (!pcm->stream[dir].substreams) {
  62                         dev_info(dev, "skipping capture dai for %s\n", pcm->name);
  63                         continue;
  64                 }
  65
  66                 stream->stream_name =
  67                         devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name,
  68                                        snd_pcm_direction_name(dir));
  69                 if (!stream->stream_name)
  70                         return -ENOMEM;
  71                 stream->channels_min = pcm->stream[dir].channels_min;
  72                 stream->channels_max = pcm->stream[dir].channels_max;
  73                 stream->rates = pcm->stream[dir].rates;
  74                 stream->formats = pcm->stream[dir].formats;
  75                 stream->subformats = pcm->stream[dir].subformats;
  76                 stream->sig_bits = pcm->stream[dir].maxbps;
  77         }
  78
  79         *drivers = drvs;
  80         return 0;
  81 }
  82
  83 static int hda_codec_register_dais(struct hda_codec *codec, struct snd_soc_component *component)
  84 {
  85         struct snd_soc_dai_driver *drvs = NULL;
  86         struct snd_soc_dapm_context *dapm;
  87         struct hda_pcm *pcm;
  88         int ret, pcm_count = 0;
  89
  90         if (list_empty(&codec->pcm_list_head))
  91                 return -EINVAL;
  92         list_for_each_entry(pcm, &codec->pcm_list_head, list)
  93                 pcm_count++;
  94
  95         ret = hda_codec_create_dais(codec, pcm_count, &drvs);
  96         if (ret < 0)
  97                 return ret;
  98
  99         dapm = snd_soc_component_get_dapm(component);
 100
 101         list_for_each_entry(pcm, &codec->pcm_list_head, list) {
 102                 struct snd_soc_dai *dai;
 103
 104                 dai = snd_soc_register_dai(component, drvs, false);
 105                 if (!dai) {
 106                         dev_err(component->dev, "register dai for %s failed\n", pcm->name);
 107                         return -EINVAL;
 108                 }
 109
 110                 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
 111                 if (ret < 0) {
 112                         dev_err(component->dev, "create widgets failed: %d\n", ret);
 113                         snd_soc_unregister_dai(dai);
 114                         return ret;
 115                 }
 116
 117                 snd_soc_dai_init_dma_data(dai, &pcm->stream[0], &pcm->stream[1]);
 118                 drvs++;
 119         }
 120
 121         return 0;
 122 }
 123
 124 static void hda_codec_unregister_dais(struct hda_codec *codec,
 125                                       struct snd_soc_component *component)
 126 {
 127         struct snd_soc_dai *dai, *save;
 128         struct hda_pcm *pcm;
 129
 130         for_each_component_dais_safe(component, dai, save) {
 131                 int stream;
 132
 133                 list_for_each_entry(pcm, &codec->pcm_list_head, list) {
 134                         if (strcmp(dai->driver->name, pcm->name))
 135                                 continue;
 136
 137                         for_each_pcm_streams(stream)
 138                                 snd_soc_dapm_free_widget(snd_soc_dai_get_widget(dai, stream));
 139
 140                         snd_soc_unregister_dai(dai);
 141                         break;
 142                 }
 143         }
 144 }
 145
 146 int hda_codec_probe_complete(struct hda_codec *codec)
 147 {
 148         struct hdac_device *hdev = &codec->core;
 149         struct hdac_bus *bus = hdev->bus;
 150         int ret;
 151
 152         ret = snd_hda_codec_build_controls(codec);
 153         if (ret < 0) {
 154                 dev_err(&hdev->dev, "unable to create controls %d\n", ret);
 155                 goto out;
 156         }
 157
 158         /* Bus suspended codecs as it does not manage their pm */
 159         pm_runtime_set_active(&hdev->dev);
 160         /* rpm was forbidden in snd_hda_codec_device_new() */
 161         snd_hda_codec_set_power_save(codec, 2000);
 162         snd_hda_codec_register(codec);
 163 out:
 164         /* Complement pm_runtime_get_sync(bus) in probe */
 165         pm_runtime_mark_last_busy(bus->dev);
 166         pm_runtime_put_autosuspend(bus->dev);
 167
 168         return ret;
 169 }
 170 EXPORT_SYMBOL_GPL(hda_codec_probe_complete);
 171
 172 /* Expects codec with usage_count=1 and status=suspended */
 173 static int hda_codec_probe(struct snd_soc_component *component)
 174 {
 175         struct hda_codec *codec = dev_to_hda_codec(component->dev);
 176         struct hdac_device *hdev = &codec->core;
 177         struct hdac_bus *bus = hdev->bus;
 178         struct hdac_ext_link *hlink;
 179         hda_codec_patch_t patch;
 180         int ret;
 181
 182 #ifdef CONFIG_PM
 183         WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 ||
 184                 !pm_runtime_status_suspended(&hdev->dev));
 185 #endif
 186
 187         hlink = snd_hdac_ext_bus_get_hlink_by_addr(bus, hdev->addr);
 188         if (!hlink) {
 189                 dev_err(&hdev->dev, "hdac link not found\n");
 190                 return -EIO;
 191         }
 192
 193         pm_runtime_get_sync(bus->dev);
 194         if (hda_codec_is_display(codec))
 195                 snd_hdac_display_power(bus, hdev->addr, true);
 196         snd_hdac_ext_bus_link_get(bus, hlink);
 197
 198         ret = snd_hda_codec_device_new(codec->bus, component->card->snd_card, hdev->addr, codec,
 199                                        false);
 200         if (ret < 0) {
 201                 dev_err(&hdev->dev, "codec create failed: %d\n", ret);
 202                 goto device_new_err;
 203         }
 204
 205         ret = snd_hda_codec_set_name(codec, codec->preset->name);
 206         if (ret < 0) {
 207                 dev_err(&hdev->dev, "set name: %s failed: %d\n", codec->preset->name, ret);
 208                 goto err;
 209         }
 210
 211         ret = snd_hdac_regmap_init(&codec->core);
 212         if (ret < 0) {
 213                 dev_err(&hdev->dev, "regmap init failed: %d\n", ret);
 214                 goto err;
 215         }
 216
 217         patch = (hda_codec_patch_t)codec->preset->driver_data;
 218         if (!patch) {
 219                 dev_err(&hdev->dev, "no patch specified\n");
 220                 ret = -EINVAL;
 221                 goto err;
 222         }
 223
 224         ret = patch(codec);
 225         if (ret < 0) {
 226                 dev_err(&hdev->dev, "codec init failed: %d\n", ret);
 227                 goto err;
 228         }
 229
 230         ret = snd_hda_codec_parse_pcms(codec);
 231         if (ret < 0) {
 232                 dev_err(&hdev->dev, "unable to map pcms to dai: %d\n", ret);
 233                 goto parse_pcms_err;
 234         }
 235
 236         ret = hda_codec_register_dais(codec, component);
 237         if (ret < 0) {
 238                 dev_err(&hdev->dev, "update dais failed: %d\n", ret);
 239                 goto parse_pcms_err;
 240         }
 241
 242         if (!hda_codec_is_display(codec)) {
 243                 ret = hda_codec_probe_complete(codec);
 244                 if (ret < 0)
 245                         goto complete_err;
 246         }
 247
 248         codec->core.lazy_cache = true;
 249
 250         return 0;
 251
 252 complete_err:
 253         hda_codec_unregister_dais(codec, component);
 254 parse_pcms_err:
 255         if (codec->patch_ops.free)
 256                 codec->patch_ops.free(codec);
 257 err:
 258         snd_hda_codec_cleanup_for_unbind(codec);
 259 device_new_err:
 260         if (hda_codec_is_display(codec))
 261                 snd_hdac_display_power(bus, hdev->addr, false);
 262
 263         snd_hdac_ext_bus_link_put(bus, hlink);
 264
 265         pm_runtime_mark_last_busy(bus->dev);
 266         pm_runtime_put_autosuspend(bus->dev);
 267         return ret;
 268 }
 269
 270 /* Leaves codec with usage_count=1 and status=suspended */
 271 static void hda_codec_remove(struct snd_soc_component *component)
 272 {
 273         struct hda_codec *codec = dev_to_hda_codec(component->dev);
 274         struct hdac_device *hdev = &codec->core;
 275         struct hdac_bus *bus = hdev->bus;
 276         struct hdac_ext_link *hlink;
 277         bool was_registered = codec->core.registered;
 278
 279         /* Don't allow any more runtime suspends */
 280         pm_runtime_forbid(&hdev->dev);
 281
 282         hda_codec_unregister_dais(codec, component);
 283
 284         if (codec->patch_ops.free)
 285                 codec->patch_ops.free(codec);
 286
 287         snd_hda_codec_cleanup_for_unbind(codec);
 288         pm_runtime_put_noidle(&hdev->dev);
 289         /* snd_hdac_device_exit() is only called on bus remove */
 290         pm_runtime_set_suspended(&hdev->dev);
 291
 292         if (hda_codec_is_display(codec))
 293                 snd_hdac_display_power(bus, hdev->addr, false);
 294
 295         hlink = snd_hdac_ext_bus_get_hlink_by_addr(bus, hdev->addr);
 296         if (hlink)
 297                 snd_hdac_ext_bus_link_put(bus, hlink);
 298         /*
 299          * HDMI card's hda_codec_probe_complete() (see late_probe()) may
 300          * not be called due to early error, leaving bus uc unbalanced
 301          */
 302         if (!was_registered) {
 303                 pm_runtime_mark_last_busy(bus->dev);
 304                 pm_runtime_put_autosuspend(bus->dev);
 305         }
 306
 307 #ifdef CONFIG_PM
 308         WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 ||
 309                 !pm_runtime_status_suspended(&hdev->dev));
 310 #endif
 311 }
 312
 313 static const struct snd_soc_dapm_route hda_dapm_routes[] = {
 314         {"AIF1TX", NULL, "Codec Input Pin1"},
 315         {"AIF2TX", NULL, "Codec Input Pin2"},
 316         {"AIF3TX", NULL, "Codec Input Pin3"},
 317
 318         {"Codec Output Pin1", NULL, "AIF1RX"},
 319         {"Codec Output Pin2", NULL, "AIF2RX"},
 320         {"Codec Output Pin3", NULL, "AIF3RX"},
 321 };
 322
 323 static const struct snd_soc_dapm_widget hda_dapm_widgets[] = {
 324         /* Audio Interface */
 325         SND_SOC_DAPM_AIF_IN("AIF1RX", "Analog Codec Playback", 0, SND_SOC_NOPM, 0, 0),
 326         SND_SOC_DAPM_AIF_IN("AIF2RX", "Digital Codec Playback", 0, SND_SOC_NOPM, 0, 0),
 327         SND_SOC_DAPM_AIF_IN("AIF3RX", "Alt Analog Codec Playback", 0, SND_SOC_NOPM, 0, 0),
 328         SND_SOC_DAPM_AIF_OUT("AIF1TX", "Analog Codec Capture", 0, SND_SOC_NOPM, 0, 0),
 329         SND_SOC_DAPM_AIF_OUT("AIF2TX", "Digital Codec Capture", 0, SND_SOC_NOPM, 0, 0),
 330         SND_SOC_DAPM_AIF_OUT("AIF3TX", "Alt Analog Codec Capture", 0, SND_SOC_NOPM, 0, 0),
 331
 332         /* Input Pins */
 333         SND_SOC_DAPM_INPUT("Codec Input Pin1"),
 334         SND_SOC_DAPM_INPUT("Codec Input Pin2"),
 335         SND_SOC_DAPM_INPUT("Codec Input Pin3"),
 336
 337         /* Output Pins */
 338         SND_SOC_DAPM_OUTPUT("Codec Output Pin1"),
 339         SND_SOC_DAPM_OUTPUT("Codec Output Pin2"),
 340         SND_SOC_DAPM_OUTPUT("Codec Output Pin3"),
 341 };
 342
 343 static struct snd_soc_dai_driver card_binder_dai = {
 344         .id = -1,
 345         .name = "codec-probing-DAI",
 346 };
 347
 348 static int hda_hdev_attach(struct hdac_device *hdev)
 349 {
 350         struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
 351         struct snd_soc_component_driver *comp_drv;
 352
 353         if (hda_codec_is_display(codec) && !hdev->bus->audio_component) {
 354                 dev_dbg(&hdev->dev, "no i915, skip registration for 0x%08x\n", hdev->vendor_id);
 355                 return -ENODEV;
 356         }
 357
 358         comp_drv = devm_kzalloc(&hdev->dev, sizeof(*comp_drv), GFP_KERNEL);
 359         if (!comp_drv)
 360                 return -ENOMEM;
 361
 362         /*
 363          * It's save to rely on dev_name() rather than a copy as component
 364          * driver's lifetime is directly tied to hda codec one
 365          */
 366         comp_drv->name = dev_name(&hdev->dev);
 367         comp_drv->probe = hda_codec_probe;
 368         comp_drv->remove = hda_codec_remove;
 369         comp_drv->idle_bias_on = false;
 370         if (!hda_codec_is_display(codec)) {
 371                 comp_drv->dapm_widgets = hda_dapm_widgets;
 372                 comp_drv->num_dapm_widgets = ARRAY_SIZE(hda_dapm_widgets);
 373                 comp_drv->dapm_routes = hda_dapm_routes;
 374                 comp_drv->num_dapm_routes = ARRAY_SIZE(hda_dapm_routes);
 375         }
 376
 377         return snd_soc_register_component(&hdev->dev, comp_drv, &card_binder_dai, 1);
 378 }
 379
 380 static int hda_hdev_detach(struct hdac_device *hdev)
 381 {
 382         struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
 383
 384         if (codec->core.registered)
 385                 cancel_delayed_work_sync(&codec->jackpoll_work);
 386
 387         snd_soc_unregister_component(&hdev->dev);
 388
 389         return 0;
 390 }
 391
 392 const struct hdac_ext_bus_ops soc_hda_ext_bus_ops = {
 393         .hdev_attach = hda_hdev_attach,
 394         .hdev_detach = hda_hdev_detach,
 395 };
 396 EXPORT_SYMBOL_GPL(soc_hda_ext_bus_ops);
 397
 398 MODULE_DESCRIPTION("HD-Audio codec driver");
 399 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
 400 MODULE_LICENSE("GPL");