1 // SPDX-License-Identifier: GPL-2.0-only
3  *  hdac-ext-bus.c - HD-audio extended core bus functions.
5  *  Copyright (C) 2014-2015 Intel Corp
21  * snd_hdac_ext_bus_init - initialize a HD-audio extended bus
25  * @ext_ops: operators used for ASoC HDA codec drivers
39 	bus->ext_ops = ext_ops;  in snd_hdac_ext_bus_init()
42 	 * buses, bus->idx should be greater than 0, but there needs to be a  in snd_hdac_ext_bus_init()
45 	bus->idx = 0;  in snd_hdac_ext_bus_init()
46 	bus->cmd_dma_state = true;  in snd_hdac_ext_bus_init()
53  * snd_hdac_ext_bus_exit - clean up a HD-audio extended bus
59 	WARN_ON(!list_empty(&bus->hlink_list));  in snd_hdac_ext_bus_exit()
64  * snd_hdac_ext_bus_device_remove - remove HD-audio extended codec base devices
70 	struct hdac_device *codec, *__codec;  in snd_hdac_ext_bus_device_remove()  local
72 	 * we need to remove all the codec devices objects created in the  in snd_hdac_ext_bus_device_remove()
75 	list_for_each_entry_safe(codec, __codec, &bus->codec_list, list) {  in snd_hdac_ext_bus_device_remove()
76 		snd_hdac_device_unregister(codec);  in snd_hdac_ext_bus_device_remove()
77 		put_device(&codec->dev);  in snd_hdac_ext_bus_device_remove()
86 	struct hdac_driver *hdrv = drv_to_hdac_driver(dev->driver);  in get_hdrv()
98 	return (get_hdrv(dev))->probe(get_hdev(dev));  in hda_ext_drv_probe()
103 	return (get_hdrv(dev))->remove(get_hdev(dev));  in hdac_ext_drv_remove()
108 	return (get_hdrv(dev))->shutdown(get_hdev(dev));  in hdac_ext_drv_shutdown()
112  * snd_hda_ext_driver_register - register a driver for ext hda devices
114  * @drv: ext hda driver structure
118 	drv->type = HDA_DEV_ASOC;  in snd_hda_ext_driver_register()
119 	drv->driver.bus = &snd_hda_bus_type;  in snd_hda_ext_driver_register()
122 	if (drv->probe)  in snd_hda_ext_driver_register()
123 		drv->driver.probe = hda_ext_drv_probe;  in snd_hda_ext_driver_register()
124 	if (drv->remove)  in snd_hda_ext_driver_register()
125 		drv->driver.remove = hdac_ext_drv_remove;  in snd_hda_ext_driver_register()
126 	if (drv->shutdown)  in snd_hda_ext_driver_register()
127 		drv->driver.shutdown = hdac_ext_drv_shutdown;  in snd_hda_ext_driver_register()
129 	return driver_register(&drv->driver);  in snd_hda_ext_driver_register()
134  * snd_hda_ext_driver_unregister - unregister a driver for ext hda devices
136  * @drv: ext hda driver structure
140 	driver_unregister(&drv->driver);  in snd_hda_ext_driver_unregister()