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"); 401