1 // SPDX-License-Identifier: GPL-2.0
3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
5 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
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>
16 static int hda_codec_create_dais(struct hda_codec *codec, int pcm_count,
17 struct snd_soc_dai_driver **drivers)
19 struct device *dev = &codec->core.dev;
20 struct snd_soc_dai_driver *drvs;
24 drvs = devm_kcalloc(dev, pcm_count, sizeof(*drvs), GFP_KERNEL);
28 pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list);
30 for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) {
31 struct snd_soc_pcm_stream *stream;
34 dev_info(dev, "creating for %s %d\n", pcm->name, i);
36 drvs[i].name = pcm->name;
37 drvs[i].ops = &snd_soc_hda_codec_dai_ops;
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);
47 devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name,
48 snd_pcm_direction_name(dir));
49 if (!stream->stream_name)
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;
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);
66 devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name,
67 snd_pcm_direction_name(dir));
68 if (!stream->stream_name)
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;
81 static int hda_codec_register_dais(struct hda_codec *codec, struct snd_soc_component *component)
83 struct snd_soc_dai_driver *drvs = NULL;
84 struct snd_soc_dapm_context *dapm;
86 int ret, pcm_count = 0;
88 if (list_empty(&codec->pcm_list_head))
90 list_for_each_entry(pcm, &codec->pcm_list_head, list)
93 ret = hda_codec_create_dais(codec, pcm_count, &drvs);
97 dapm = snd_soc_component_get_dapm(component);
99 list_for_each_entry(pcm, &codec->pcm_list_head, list) {
100 struct snd_soc_dai *dai;
102 dai = snd_soc_register_dai(component, drvs, false);
104 dev_err(component->dev, "register dai for %s failed\n", pcm->name);
108 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
110 dev_err(component->dev, "create widgets failed: %d\n", ret);
111 snd_soc_unregister_dai(dai);
115 snd_soc_dai_init_dma_data(dai, &pcm->stream[0], &pcm->stream[1]);
122 static void hda_codec_unregister_dais(struct hda_codec *codec,
123 struct snd_soc_component *component)
125 struct snd_soc_dai *dai, *save;
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))
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);
143 int hda_codec_probe_complete(struct hda_codec *codec)
145 struct hdac_device *hdev = &codec->core;
146 struct hdac_bus *bus = hdev->bus;
149 ret = snd_hda_codec_build_controls(codec);
151 dev_err(&hdev->dev, "unable to create controls %d\n", ret);
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);
161 /* Complement pm_runtime_get_sync(bus) in probe */
162 pm_runtime_mark_last_busy(bus->dev);
163 pm_runtime_put_autosuspend(bus->dev);
167 EXPORT_SYMBOL_GPL(hda_codec_probe_complete);
169 /* Expects codec with usage_count=1 and status=suspended */
170 static int hda_codec_probe(struct snd_soc_component *component)
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;
180 WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 ||
181 !pm_runtime_status_suspended(&hdev->dev));
184 hlink = snd_hdac_ext_bus_link_at(bus, hdev->addr);
186 dev_err(&hdev->dev, "hdac link not found\n");
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);
195 ret = snd_hda_codec_device_new(codec->bus, component->card->snd_card, hdev->addr, codec,
198 dev_err(&hdev->dev, "create hda codec failed: %d\n", ret);
202 ret = snd_hda_codec_set_name(codec, codec->preset->name);
204 dev_err(&hdev->dev, "name failed %s\n", codec->preset->name);
208 ret = snd_hdac_regmap_init(&codec->core);
210 dev_err(&hdev->dev, "regmap init failed\n");
214 patch = (hda_codec_patch_t)codec->preset->driver_data;
216 dev_err(&hdev->dev, "no patch specified?\n");
223 dev_err(&hdev->dev, "patch failed %d\n", ret);
227 ret = snd_hda_codec_parse_pcms(codec);
229 dev_err(&hdev->dev, "unable to map pcms to dai %d\n", ret);
233 ret = hda_codec_register_dais(codec, component);
235 dev_err(&hdev->dev, "update dais failed: %d\n", ret);
239 if (!hda_codec_is_display(codec)) {
240 ret = hda_codec_probe_complete(codec);
245 codec->core.lazy_cache = true;
250 hda_codec_unregister_dais(codec, component);
252 if (codec->patch_ops.free)
253 codec->patch_ops.free(codec);
255 snd_hda_codec_cleanup_for_unbind(codec);
257 if (hda_codec_is_display(codec))
258 snd_hdac_display_power(bus, hdev->addr, false);
260 snd_hdac_ext_bus_link_put(bus, hlink);
262 pm_runtime_mark_last_busy(bus->dev);
263 pm_runtime_put_autosuspend(bus->dev);
267 /* Leaves codec with usage_count=1 and status=suspended */
268 static void hda_codec_remove(struct snd_soc_component *component)
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;
276 /* Don't allow any more runtime suspends */
277 pm_runtime_forbid(&hdev->dev);
279 hda_codec_unregister_dais(codec, component);
281 if (codec->patch_ops.free)
282 codec->patch_ops.free(codec);
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);
289 if (hda_codec_is_display(codec))
290 snd_hdac_display_power(bus, hdev->addr, false);
292 hlink = snd_hdac_ext_bus_link_at(bus, hdev->addr);
294 snd_hdac_ext_bus_link_put(bus, hlink);
296 * HDMI card's hda_codec_probe_complete() (see late_probe()) may
297 * not be called due to early error, leaving bus uc unbalanced
299 if (!was_registered) {
300 pm_runtime_mark_last_busy(bus->dev);
301 pm_runtime_put_autosuspend(bus->dev);
305 WARN_ON(atomic_read(&hdev->dev.power.usage_count) != 1 ||
306 !pm_runtime_status_suspended(&hdev->dev));
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"},
315 {"Codec Output Pin1", NULL, "AIF1RX"},
316 {"Codec Output Pin2", NULL, "AIF2RX"},
317 {"Codec Output Pin3", NULL, "AIF3RX"},
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),
330 SND_SOC_DAPM_INPUT("Codec Input Pin1"),
331 SND_SOC_DAPM_INPUT("Codec Input Pin2"),
332 SND_SOC_DAPM_INPUT("Codec Input Pin3"),
335 SND_SOC_DAPM_OUTPUT("Codec Output Pin1"),
336 SND_SOC_DAPM_OUTPUT("Codec Output Pin2"),
337 SND_SOC_DAPM_OUTPUT("Codec Output Pin3"),
340 static struct snd_soc_dai_driver card_binder_dai = {
342 .name = "codec-probing-DAI",
345 static int hda_hdev_attach(struct hdac_device *hdev)
347 struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
348 struct snd_soc_component_driver *comp_drv;
350 comp_drv = devm_kzalloc(&hdev->dev, sizeof(*comp_drv), GFP_KERNEL);
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
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);
369 return snd_soc_register_component(&hdev->dev, comp_drv, &card_binder_dai, 1);
372 static int hda_hdev_detach(struct hdac_device *hdev)
374 struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
376 if (codec->core.registered)
377 cancel_delayed_work_sync(&codec->jackpoll_work);
379 snd_soc_unregister_component(&hdev->dev);
384 const struct hdac_ext_bus_ops soc_hda_ext_bus_ops = {
385 .hdev_attach = hda_hdev_attach,
386 .hdev_detach = hda_hdev_detach,
388 EXPORT_SYMBOL_GPL(soc_hda_ext_bus_ops);
390 MODULE_DESCRIPTION("HD-Audio codec driver");
391 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
392 MODULE_LICENSE("GPL");