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
hda_codec_create_dais(struct hda_codec * codec,int pcm_count,struct snd_soc_dai_driver ** drivers)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
hda_codec_register_dais(struct hda_codec * codec,struct snd_soc_component * component)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
hda_codec_unregister_dais(struct hda_codec * codec,struct snd_soc_component * component)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
hda_codec_probe_complete(struct hda_codec * codec)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 */
hda_codec_probe(struct snd_soc_component * component)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 */
hda_codec_remove(struct snd_soc_component * component)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
hda_hdev_attach(struct hdac_device * hdev)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
hda_hdev_detach(struct hdac_device * hdev)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
