1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Copyright(c) 2021-2022 Intel Corporation 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 return ret; 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); 163 164 /* Complement pm_runtime_get_sync(bus) in probe */ 165 pm_runtime_put_autosuspend(bus->dev); 166 167 return ret; 168 } 169 EXPORT_SYMBOL_GPL(hda_codec_probe_complete); 170 171 /* Expects codec with usage_count=1 and status=suspended */ 172 static int hda_codec_probe(struct snd_soc_component *component) 173 { 174 struct hda_codec *codec = dev_to_hda_codec(component->dev); 175 struct hda_codec_driver *driver = hda_codec_to_driver(codec); 176 struct hdac_device *hdev = &codec->core; 177 struct hdac_bus *bus = hdev->bus; 178 struct hdac_ext_link *hlink; 179 int ret; 180 181 #ifdef CONFIG_PM 182 WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 || 183 !pm_runtime_status_suspended(&hdev->dev)); 184 #endif 185 186 hlink = snd_hdac_ext_bus_get_hlink_by_addr(bus, hdev->addr); 187 if (!hlink) { 188 dev_err(&hdev->dev, "hdac link not found\n"); 189 return -EIO; 190 } 191 192 pm_runtime_get_sync(bus->dev); 193 if (hda_codec_is_display(codec)) 194 snd_hdac_display_power(bus, hdev->addr, true); 195 snd_hdac_ext_bus_link_get(bus, hlink); 196 197 ret = snd_hda_codec_device_new(codec->bus, component->card->snd_card, hdev->addr, codec, 198 false); 199 if (ret < 0) { 200 dev_err(&hdev->dev, "codec create failed: %d\n", ret); 201 goto device_new_err; 202 } 203 204 ret = snd_hda_codec_set_name(codec, codec->preset->name); 205 if (ret < 0) { 206 dev_err(&hdev->dev, "set name: %s failed: %d\n", codec->preset->name, ret); 207 goto err; 208 } 209 210 ret = snd_hdac_regmap_init(&codec->core); 211 if (ret < 0) { 212 dev_err(&hdev->dev, "regmap init failed: %d\n", ret); 213 goto err; 214 } 215 216 if (WARN_ON(!(driver->ops && driver->ops->probe))) { 217 ret = -EINVAL; 218 goto err; 219 } 220 221 ret = driver->ops->probe(codec, codec->preset); 222 if (ret < 0) { 223 dev_err(&hdev->dev, "codec init 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 (driver->ops->remove) 253 driver->ops->remove(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_put_autosuspend(bus->dev); 263 return ret; 264 } 265 266 /* Leaves codec with usage_count=1 and status=suspended */ 267 static void hda_codec_remove(struct snd_soc_component *component) 268 { 269 struct hda_codec *codec = dev_to_hda_codec(component->dev); 270 struct hda_codec_driver *driver = hda_codec_to_driver(codec); 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 (driver->ops->remove) 282 driver->ops->remove(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_get_hlink_by_addr(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_put_autosuspend(bus->dev); 301 } 302 303 #ifdef CONFIG_PM 304 WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 || 305 !pm_runtime_status_suspended(&hdev->dev)); 306 #endif 307 } 308 309 static const struct snd_soc_dapm_route hda_dapm_routes[] = { 310 {"AIF1TX", NULL, "Codec Input Pin1"}, 311 {"AIF2TX", NULL, "Codec Input Pin2"}, 312 {"AIF3TX", NULL, "Codec Input Pin3"}, 313 314 {"Codec Output Pin1", NULL, "AIF1RX"}, 315 {"Codec Output Pin2", NULL, "AIF2RX"}, 316 {"Codec Output Pin3", NULL, "AIF3RX"}, 317 }; 318 319 static const struct snd_soc_dapm_widget hda_dapm_widgets[] = { 320 /* Audio Interface */ 321 SND_SOC_DAPM_AIF_IN("AIF1RX", "Analog Codec Playback", 0, SND_SOC_NOPM, 0, 0), 322 SND_SOC_DAPM_AIF_IN("AIF2RX", "Digital Codec Playback", 0, SND_SOC_NOPM, 0, 0), 323 SND_SOC_DAPM_AIF_IN("AIF3RX", "Alt Analog Codec Playback", 0, SND_SOC_NOPM, 0, 0), 324 SND_SOC_DAPM_AIF_OUT("AIF1TX", "Analog Codec Capture", 0, SND_SOC_NOPM, 0, 0), 325 SND_SOC_DAPM_AIF_OUT("AIF2TX", "Digital Codec Capture", 0, SND_SOC_NOPM, 0, 0), 326 SND_SOC_DAPM_AIF_OUT("AIF3TX", "Alt Analog Codec Capture", 0, SND_SOC_NOPM, 0, 0), 327 328 /* Input Pins */ 329 SND_SOC_DAPM_INPUT("Codec Input Pin1"), 330 SND_SOC_DAPM_INPUT("Codec Input Pin2"), 331 SND_SOC_DAPM_INPUT("Codec Input Pin3"), 332 333 /* Output Pins */ 334 SND_SOC_DAPM_OUTPUT("Codec Output Pin1"), 335 SND_SOC_DAPM_OUTPUT("Codec Output Pin2"), 336 SND_SOC_DAPM_OUTPUT("Codec Output Pin3"), 337 }; 338 339 static struct snd_soc_dai_driver card_binder_dai = { 340 .id = -1, 341 .name = "codec-probing-DAI", 342 }; 343 344 static int hda_hdev_attach(struct hdac_device *hdev) 345 { 346 struct hda_codec *codec = dev_to_hda_codec(&hdev->dev); 347 struct snd_soc_component_driver *comp_drv; 348 349 if (hda_codec_is_display(codec) && !hdev->bus->audio_component) { 350 dev_dbg(&hdev->dev, "no i915, skip registration for 0x%08x\n", hdev->vendor_id); 351 return -ENODEV; 352 } 353 354 comp_drv = devm_kzalloc(&hdev->dev, sizeof(*comp_drv), GFP_KERNEL); 355 if (!comp_drv) 356 return -ENOMEM; 357 358 /* 359 * It's save to rely on dev_name() rather than a copy as component 360 * driver's lifetime is directly tied to hda codec one 361 */ 362 comp_drv->name = dev_name(&hdev->dev); 363 comp_drv->probe = hda_codec_probe; 364 comp_drv->remove = hda_codec_remove; 365 comp_drv->idle_bias_on = false; 366 if (!hda_codec_is_display(codec)) { 367 comp_drv->dapm_widgets = hda_dapm_widgets; 368 comp_drv->num_dapm_widgets = ARRAY_SIZE(hda_dapm_widgets); 369 comp_drv->dapm_routes = hda_dapm_routes; 370 comp_drv->num_dapm_routes = ARRAY_SIZE(hda_dapm_routes); 371 } 372 373 return snd_soc_register_component(&hdev->dev, comp_drv, &card_binder_dai, 1); 374 } 375 376 static int hda_hdev_detach(struct hdac_device *hdev) 377 { 378 struct hda_codec *codec = dev_to_hda_codec(&hdev->dev); 379 380 if (codec->core.registered) 381 cancel_delayed_work_sync(&codec->jackpoll_work); 382 383 snd_soc_unregister_component(&hdev->dev); 384 385 return 0; 386 } 387 388 const struct hdac_ext_bus_ops soc_hda_ext_bus_ops = { 389 .hdev_attach = hda_hdev_attach, 390 .hdev_detach = hda_hdev_detach, 391 }; 392 EXPORT_SYMBOL_GPL(soc_hda_ext_bus_ops); 393 394 MODULE_DESCRIPTION("HD-Audio codec driver"); 395 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>"); 396 MODULE_LICENSE("GPL"); 397