1 // SPDX-License-Identifier: GPL-2.0
3  * sysfs support for HD-audio core device
24 	struct hdac_device *codec = dev_to_hdac_dev(dev);	\
25 	return sysfs_emit(buf, "0x%x\n", codec->type);		\
34 	struct hdac_device *codec = dev_to_hdac_dev(dev);	\
36 			  codec->type ? codec->type : "");	\
89 	ssize_t (*show)(struct hdac_device *codec, hda_nid_t nid,
91 	ssize_t (*store)(struct hdac_device *codec, hda_nid_t nid,
98 	struct device *dev = kobj_to_dev(kobj->parent->parent);  in get_codec_nid()
102 	ret = kstrtoint(kobj->name, 16, &nid);  in get_codec_nid()
103 	if (ret < 0)  in get_codec_nid()
114 	struct hdac_device *codec;  in widget_attr_show()  local
117 	if (!wid_attr->show)  in widget_attr_show()
118 		return -EIO;  in widget_attr_show()
119 	nid = get_codec_nid(kobj, &codec);  in widget_attr_show()
120 	if (nid < 0)  in widget_attr_show()
122 	return wid_attr->show(codec, nid, wid_attr, buf);  in widget_attr_show()
130 	struct hdac_device *codec;  in widget_attr_store()  local
133 	if (!wid_attr->store)  in widget_attr_store()
134 		return -EIO;  in widget_attr_store()
135 	nid = get_codec_nid(kobj, &codec);  in widget_attr_store()
136 	if (nid < 0)  in widget_attr_store()
138 	return wid_attr->store(codec, nid, wid_attr, buf, count);  in widget_attr_store()
161 static ssize_t caps_show(struct hdac_device *codec, hda_nid_t nid,  in caps_show()  argument
164 	return sysfs_emit(buf, "0x%08x\n", get_wcaps(codec, nid));  in caps_show()
167 static ssize_t pin_caps_show(struct hdac_device *codec, hda_nid_t nid,  in pin_caps_show()  argument
170 	if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)  in pin_caps_show()
171 		return 0;  in pin_caps_show()
172 	return sysfs_emit(buf, "0x%08x\n",  in pin_caps_show()
173 			  snd_hdac_read_parm(codec, nid, AC_PAR_PIN_CAP));  in pin_caps_show()
176 static ssize_t pin_cfg_show(struct hdac_device *codec, hda_nid_t nid,  in pin_cfg_show()  argument
181 	if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)  in pin_cfg_show()
182 		return 0;  in pin_cfg_show()
183 	if (snd_hdac_read(codec, nid, AC_VERB_GET_CONFIG_DEFAULT, 0, &val))  in pin_cfg_show()
184 		return 0;  in pin_cfg_show()
185 	return sysfs_emit(buf, "0x%08x\n", val);  in pin_cfg_show()
188 static bool has_pcm_cap(struct hdac_device *codec, hda_nid_t nid)  in has_pcm_cap()  argument
190 	if (nid == codec->afg || nid == codec->mfg)  in has_pcm_cap()
192 	switch (get_wcaps_type(get_wcaps(codec, nid))) {  in has_pcm_cap()
201 static ssize_t pcm_caps_show(struct hdac_device *codec, hda_nid_t nid,  in pcm_caps_show()  argument
204 	if (!has_pcm_cap(codec, nid))  in pcm_caps_show()
205 		return 0;  in pcm_caps_show()
206 	return sysfs_emit(buf, "0x%08x\n",  in pcm_caps_show()
207 			  snd_hdac_read_parm(codec, nid, AC_PAR_PCM));  in pcm_caps_show()
210 static ssize_t pcm_formats_show(struct hdac_device *codec, hda_nid_t nid,  in pcm_formats_show()  argument
213 	if (!has_pcm_cap(codec, nid))  in pcm_formats_show()
214 		return 0;  in pcm_formats_show()
215 	return sysfs_emit(buf, "0x%08x\n",  in pcm_formats_show()
216 			  snd_hdac_read_parm(codec, nid, AC_PAR_STREAM));  in pcm_formats_show()
219 static ssize_t amp_in_caps_show(struct hdac_device *codec, hda_nid_t nid,  in amp_in_caps_show()  argument
222 	if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_IN_AMP))  in amp_in_caps_show()
223 		return 0;  in amp_in_caps_show()
224 	return sysfs_emit(buf, "0x%08x\n",  in amp_in_caps_show()
225 			  snd_hdac_read_parm(codec, nid, AC_PAR_AMP_IN_CAP));  in amp_in_caps_show()
228 static ssize_t amp_out_caps_show(struct hdac_device *codec, hda_nid_t nid,  in amp_out_caps_show()  argument
231 	if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_OUT_AMP))  in amp_out_caps_show()
232 		return 0;  in amp_out_caps_show()
233 	return sysfs_emit(buf, "0x%08x\n",  in amp_out_caps_show()
234 			  snd_hdac_read_parm(codec, nid, AC_PAR_AMP_OUT_CAP));  in amp_out_caps_show()
237 static ssize_t power_caps_show(struct hdac_device *codec, hda_nid_t nid,  in power_caps_show()  argument
240 	if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_POWER))  in power_caps_show()
241 		return 0;  in power_caps_show()
242 	return sysfs_emit(buf, "0x%08x\n",  in power_caps_show()
243 			  snd_hdac_read_parm(codec, nid, AC_PAR_POWER_STATE));  in power_caps_show()
246 static ssize_t gpio_caps_show(struct hdac_device *codec, hda_nid_t nid,  in gpio_caps_show()  argument
249 	return sysfs_emit(buf, "0x%08x\n",  in gpio_caps_show()
250 			  snd_hdac_read_parm(codec, nid, AC_PAR_GPIO_CAP));  in gpio_caps_show()
253 static ssize_t connections_show(struct hdac_device *codec, hda_nid_t nid,  in connections_show()  argument
258 	ssize_t ret = 0;  in connections_show()
260 	nconns = snd_hdac_get_connections(codec, nid, list, ARRAY_SIZE(list));  in connections_show()
261 	if (nconns <= 0)  in connections_show()
263 	for (i = 0; i < nconns; i++)  in connections_show()
320 static void widget_tree_free(struct hdac_device *codec)  in widget_tree_free()  argument
322 	struct hdac_widget_tree *tree = codec->widgets;  in widget_tree_free()
327 	free_widget_node(tree->afg, &widget_afg_group);  in widget_tree_free()
328 	if (tree->nodes) {  in widget_tree_free()
329 		for (p = tree->nodes; *p; p++)  in widget_tree_free()
331 		kfree(tree->nodes);  in widget_tree_free()
333 	kobject_put(tree->root);  in widget_tree_free()
335 	codec->widgets = NULL;  in widget_tree_free()
346 		return -ENOMEM;  in add_widget_node()
349 	if (err < 0) {  in add_widget_node()
354 	if (err < 0) {  in add_widget_node()
360 	return 0;  in add_widget_node()
363 static int widget_tree_create(struct hdac_device *codec)  in widget_tree_create()  argument
369 	tree = codec->widgets = kzalloc(sizeof(*tree), GFP_KERNEL);  in widget_tree_create()
371 		return -ENOMEM;  in widget_tree_create()
373 	tree->root = kobject_create_and_add("widgets", &codec->dev.kobj);  in widget_tree_create()
374 	if (!tree->root)  in widget_tree_create()
375 		return -ENOMEM;  in widget_tree_create()
377 	tree->nodes = kcalloc(codec->num_nodes + 1, sizeof(*tree->nodes),  in widget_tree_create()
379 	if (!tree->nodes)  in widget_tree_create()
380 		return -ENOMEM;  in widget_tree_create()
382 	for (i = 0, nid = codec->start_nid; i < codec->num_nodes; i++, nid++) {  in widget_tree_create()
383 		err = add_widget_node(tree->root, nid, &widget_node_group,  in widget_tree_create()
384 				      &tree->nodes[i]);  in widget_tree_create()
385 		if (err < 0)  in widget_tree_create()
389 	if (codec->afg) {  in widget_tree_create()
390 		err = add_widget_node(tree->root, codec->afg,  in widget_tree_create()
391 				      &widget_afg_group, &tree->afg);  in widget_tree_create()
392 		if (err < 0)  in widget_tree_create()
396 	kobject_uevent(tree->root, KOBJ_CHANGE);  in widget_tree_create()
397 	return 0;  in widget_tree_create()
400 /* call with codec->widget_lock held */
401 int hda_widget_sysfs_init(struct hdac_device *codec)  in hda_widget_sysfs_init()  argument
405 	if (codec->widgets)  in hda_widget_sysfs_init()
406 		return 0; /* already created */  in hda_widget_sysfs_init()
408 	err = widget_tree_create(codec);  in hda_widget_sysfs_init()
409 	if (err < 0) {  in hda_widget_sysfs_init()
410 		widget_tree_free(codec);  in hda_widget_sysfs_init()
414 	return 0;  in hda_widget_sysfs_init()
417 /* call with codec->widget_lock held */
418 void hda_widget_sysfs_exit(struct hdac_device *codec)  in hda_widget_sysfs_exit()  argument
420 	widget_tree_free(codec);  in hda_widget_sysfs_exit()
423 /* call with codec->widget_lock held */
424 int hda_widget_sysfs_reinit(struct hdac_device *codec,  in hda_widget_sysfs_reinit()  argument
432 	if (!codec->widgets)  in hda_widget_sysfs_reinit()
433 		return 0;  in hda_widget_sysfs_reinit()
435 	tree = kmemdup(codec->widgets, sizeof(*tree), GFP_KERNEL);  in hda_widget_sysfs_reinit()
437 		return -ENOMEM;  in hda_widget_sysfs_reinit()
439 	tree->nodes = kcalloc(num_nodes + 1, sizeof(*tree->nodes), GFP_KERNEL);  in hda_widget_sysfs_reinit()
440 	if (!tree->nodes) {  in hda_widget_sysfs_reinit()
442 		return -ENOMEM;  in hda_widget_sysfs_reinit()
445 	/* prune non-existing nodes */  in hda_widget_sysfs_reinit()
446 	for (i = 0, nid = codec->start_nid; i < codec->num_nodes; i++, nid++) {  in hda_widget_sysfs_reinit()
448 			free_widget_node(codec->widgets->nodes[i],  in hda_widget_sysfs_reinit()
453 	for (i = 0, nid = start_nid; i < num_nodes; i++, nid++) {  in hda_widget_sysfs_reinit()
454 		if (nid < codec->start_nid || nid >= codec->end_nid)  in hda_widget_sysfs_reinit()
455 			add_widget_node(tree->root, nid, &widget_node_group,  in hda_widget_sysfs_reinit()
456 					&tree->nodes[i]);  in hda_widget_sysfs_reinit()
458 			tree->nodes[i] =  in hda_widget_sysfs_reinit()
459 				codec->widgets->nodes[nid - codec->start_nid];  in hda_widget_sysfs_reinit()
463 	kfree(codec->widgets->nodes);  in hda_widget_sysfs_reinit()
464 	kfree(codec->widgets);  in hda_widget_sysfs_reinit()
465 	codec->widgets = tree;  in hda_widget_sysfs_reinit()
467 	kobject_uevent(tree->root, KOBJ_CHANGE);  in hda_widget_sysfs_reinit()
468 	return 0;  in hda_widget_sysfs_reinit()