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"); 393