1 // SPDX-License-Identifier: GPL-2.0
3  * sysfs support for HD-audio core device
25 	return sprintf(buf, "0x%x\n", codec->type);		\
36 		       codec->type ? codec->type : "");		\
82  * /sys/bus/hdaudioC0D0/widgets/04/caps
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()
117 	if (!wid_attr->show)  in widget_attr_show()
118 		return -EIO;  in widget_attr_show()
122 	return wid_attr->show(codec, nid, wid_attr, buf);  in widget_attr_show()
133 	if (!wid_attr->store)  in widget_attr_store()
134 		return -EIO;  in widget_attr_store()
138 	return wid_attr->store(codec, nid, wid_attr, buf, count);  in widget_attr_store()
190 	if (nid == codec->afg || nid == codec->mfg)  in has_pcm_cap()
222 	if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_IN_AMP))  in amp_in_caps_show()
231 	if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_OUT_AMP))  in amp_out_caps_show()
240 	if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_POWER))  in power_caps_show()
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()
367 	tree = codec->widgets = kzalloc(sizeof(*tree), GFP_KERNEL);  in widget_tree_create()
369 		return -ENOMEM;  in widget_tree_create()
371 	tree->root = kobject_create_and_add("widgets", &codec->dev.kobj);  in widget_tree_create()
372 	if (!tree->root)  in widget_tree_create()
373 		return -ENOMEM;  in widget_tree_create()
375 	tree->nodes = kcalloc(codec->num_nodes + 1, sizeof(*tree->nodes),  in widget_tree_create()
377 	if (!tree->nodes)  in widget_tree_create()
378 		return -ENOMEM;  in widget_tree_create()
380 	for (i = 0, nid = codec->start_nid; i < codec->num_nodes; i++, nid++) {  in widget_tree_create()
381 		err = add_widget_node(tree->root, nid, &widget_node_group,  in widget_tree_create()
382 				      &tree->nodes[i]);  in widget_tree_create()
387 	if (codec->afg) {  in widget_tree_create()
388 		err = add_widget_node(tree->root, codec->afg,  in widget_tree_create()
389 				      &widget_afg_group, &tree->afg);  in widget_tree_create()
394 	kobject_uevent(tree->root, KOBJ_CHANGE);  in widget_tree_create()
398 /* call with codec->widget_lock held */
403 	if (codec->widgets)  in hda_widget_sysfs_init()
415 /* call with codec->widget_lock held */
421 /* call with codec->widget_lock held */
430 	if (!codec->widgets)  in hda_widget_sysfs_reinit()
433 	tree = kmemdup(codec->widgets, sizeof(*tree), GFP_KERNEL);  in hda_widget_sysfs_reinit()
435 		return -ENOMEM;  in hda_widget_sysfs_reinit()
437 	tree->nodes = kcalloc(num_nodes + 1, sizeof(*tree->nodes), GFP_KERNEL);  in hda_widget_sysfs_reinit()
438 	if (!tree->nodes) {  in hda_widget_sysfs_reinit()
440 		return -ENOMEM;  in hda_widget_sysfs_reinit()
443 	/* prune non-existing nodes */  in hda_widget_sysfs_reinit()
444 	for (i = 0, nid = codec->start_nid; i < codec->num_nodes; i++, nid++) {  in hda_widget_sysfs_reinit()
446 			free_widget_node(codec->widgets->nodes[i],  in hda_widget_sysfs_reinit()
452 		if (nid < codec->start_nid || nid >= codec->end_nid)  in hda_widget_sysfs_reinit()
453 			add_widget_node(tree->root, nid, &widget_node_group,  in hda_widget_sysfs_reinit()
454 					&tree->nodes[i]);  in hda_widget_sysfs_reinit()
456 			tree->nodes[i] =  in hda_widget_sysfs_reinit()
457 				codec->widgets->nodes[nid - codec->start_nid];  in hda_widget_sysfs_reinit()
461 	kfree(codec->widgets->nodes);  in hda_widget_sysfs_reinit()
462 	kfree(codec->widgets);  in hda_widget_sysfs_reinit()
463 	codec->widgets = tree;  in hda_widget_sysfs_reinit()
465 	kobject_uevent(tree->root, KOBJ_CHANGE);  in hda_widget_sysfs_reinit()