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