1 // SPDX-License-Identifier: GPL-2.0-only
3  * HD-audio codec driver binding
10 #include <linux/module.h>
14 #include <sound/core.h>
24 	struct hda_codec *codec = container_of(dev, struct hda_codec, core);  in hda_codec_match()
26 		container_of(drv, struct hda_codec_driver, core);  in hda_codec_match()
29 	u32 id = codec->probe_id ? codec->probe_id : codec->core.vendor_id;  in hda_codec_match()
30 	u32 rev_id = codec->core.revision_id;  in hda_codec_match()
32 	for (list = driver->id; list->vendor_id; list++) {  in hda_codec_match()
33 		if (list->vendor_id == id &&  in hda_codec_match()
34 		    (!list->rev_id || list->rev_id == rev_id)) {  in hda_codec_match()
35 			codec->preset = list;  in hda_codec_match()
45 	struct hda_codec *codec = container_of(dev, struct hda_codec, core);  in hda_codec_unsol_event()
48 	if (codec->bus->shutdown)  in hda_codec_unsol_event()
52 	if (codec->core.dev.power.power_state.event != PM_EVENT_ON)  in hda_codec_unsol_event()
55 	if (codec->patch_ops.unsol_event)  in hda_codec_unsol_event()
56 		codec->patch_ops.unsol_event(codec, ev);  in hda_codec_unsol_event()
60  * snd_hda_codec_set_name - set the codec name
70 	err = snd_hdac_device_set_chip_name(&codec->core, name);  in snd_hda_codec_set_name()
75 	if (!*codec->card->mixername ||  in snd_hda_codec_set_name()
76 	    codec->bus->mixer_assigned >= codec->core.addr) {  in snd_hda_codec_set_name()
77 		snprintf(codec->card->mixername,  in snd_hda_codec_set_name()
78 			 sizeof(codec->card->mixername), "%s %s",  in snd_hda_codec_set_name()
79 			 codec->core.vendor_name, codec->core.chip_name);  in snd_hda_codec_set_name()
80 		codec->bus->mixer_assigned = codec->core.addr;  in snd_hda_codec_set_name()
90 	struct module *owner = dev->driver->owner;  in hda_codec_driver_probe()
94 	if (codec->bus->core.ext_ops) {  in hda_codec_driver_probe()
95 		if (WARN_ON(!codec->bus->core.ext_ops->hdev_attach))  in hda_codec_driver_probe()
96 			return -EINVAL;  in hda_codec_driver_probe()
97 		return codec->bus->core.ext_ops->hdev_attach(&codec->core);  in hda_codec_driver_probe()
100 	if (WARN_ON(!codec->preset))  in hda_codec_driver_probe()
101 		return -EINVAL;  in hda_codec_driver_probe()
103 	err = snd_hda_codec_set_name(codec, codec->preset->name);  in hda_codec_driver_probe()
106 	err = snd_hdac_regmap_init(&codec->core);  in hda_codec_driver_probe()
111 		err = -EINVAL;  in hda_codec_driver_probe()
115 	patch = (hda_codec_patch_t)codec->preset->driver_data;  in hda_codec_driver_probe()
129 	if (!codec->bus->bus_probing && codec->card->registered) {  in hda_codec_driver_probe()
130 		err = snd_card_register(codec->card);  in hda_codec_driver_probe()
136 	codec->core.lazy_cache = true;  in hda_codec_driver_probe()
140 	if (codec->patch_ops.free)  in hda_codec_driver_probe()
141 		codec->patch_ops.free(codec);  in hda_codec_driver_probe()
154 	if (codec->bus->core.ext_ops) {  in hda_codec_driver_remove()
155 		if (WARN_ON(!codec->bus->core.ext_ops->hdev_detach))  in hda_codec_driver_remove()
156 			return -EINVAL;  in hda_codec_driver_remove()
157 		return codec->bus->core.ext_ops->hdev_detach(&codec->core);  in hda_codec_driver_remove()
162 	if (!refcount_dec_and_test(&codec->pcm_ref))  in hda_codec_driver_remove()
163 		wait_event(codec->remove_sleep, !refcount_read(&codec->pcm_ref));  in hda_codec_driver_remove()
164 	snd_power_sync_ref(codec->bus->card);  in hda_codec_driver_remove()
166 	if (codec->patch_ops.free)  in hda_codec_driver_remove()
167 		codec->patch_ops.free(codec);  in hda_codec_driver_remove()
169 	module_put(dev->driver->owner);  in hda_codec_driver_remove()
179 			       struct module *owner)  in __hda_codec_driver_register()
181 	drv->core.driver.name = name;  in __hda_codec_driver_register()
182 	drv->core.driver.owner = owner;  in __hda_codec_driver_register()
183 	drv->core.driver.bus = &snd_hda_bus_type;  in __hda_codec_driver_register()
184 	drv->core.driver.probe = hda_codec_driver_probe;  in __hda_codec_driver_register()
185 	drv->core.driver.remove = hda_codec_driver_remove;  in __hda_codec_driver_register()
186 	drv->core.driver.shutdown = hda_codec_driver_shutdown;  in __hda_codec_driver_register()
187 	drv->core.driver.pm = &hda_codec_driver_pm;  in __hda_codec_driver_register()
188 	drv->core.type = HDA_DEV_LEGACY;  in __hda_codec_driver_register()
189 	drv->core.match = hda_codec_match;  in __hda_codec_driver_register()
190 	drv->core.unsol_event = hda_codec_unsol_event;  in __hda_codec_driver_register()
191 	return driver_register(&drv->core.driver);  in __hda_codec_driver_register()
197 	driver_unregister(&drv->core.driver);  in hda_codec_driver_unregister()
203 	return device_attach(hda_codec_dev(codec)) > 0 && codec->preset;  in codec_probed()
206 /* try to auto-load codec module */
209 #ifdef MODULE  in request_codec_module()
213 	switch (codec->probe_id) {  in request_codec_module()
216 		mod = "snd-hda-codec-hdmi";  in request_codec_module()
221 		mod = "snd-hda-codec-generic";  in request_codec_module()
225 		snd_hdac_codec_modalias(&codec->core, modalias, sizeof(modalias));  in request_codec_module()
232 #endif /* MODULE */  in request_codec_module()
235 /* try to auto-load and bind the codec module */
238 #ifdef MODULE  in codec_bind_module()
252 	 * For ASoC users, if snd_hda_hdmi_codec module is denylisted and any  in is_likely_hdmi_codec()
253 	 * event causes i915 enumeration to fail, ->wcaps remains uninitialized.  in is_likely_hdmi_codec()
255 	if (!codec->wcaps)  in is_likely_hdmi_codec()
278 	if (codec->probe_id)  in codec_bind_generic()
279 		return -ENODEV;  in codec_bind_generic()
282 		codec->probe_id = HDA_CODEC_ID_GENERIC_HDMI;  in codec_bind_generic()
288 	codec->probe_id = HDA_CODEC_ID_GENERIC;  in codec_bind_generic()
292 	return -ENODEV;  in codec_bind_generic()
297 	(codec->modelname && !strcmp(codec->modelname, "generic"))
303  * snd_hda_codec_configure - (Re-)configure the HD-audio codec
306  * Start parsing of the given codec tree and (re-)initialize the whole
315 	if (codec->configured)  in snd_hda_codec_configure()
319 		codec->probe_id = HDA_CODEC_ID_GENERIC;  in snd_hda_codec_configure()
321 		codec->probe_id = 0;  in snd_hda_codec_configure()
323 	if (!device_is_registered(&codec->core.dev)) {  in snd_hda_codec_configure()
324 		err = snd_hdac_device_register(&codec->core);  in snd_hda_codec_configure()
329 	if (!codec->preset)  in snd_hda_codec_configure()
331 	if (!codec->preset) {  in snd_hda_codec_configure()
339 	codec->configured = 1;  in snd_hda_codec_configure()