1 // SPDX-License-Identifier: GPL-2.0-only
18 #include <sound/ac97/codec.h>
42 	return -ENODEV;  in ac97_unbound_ctrl_write()
48 	return -ENODEV;  in ac97_unbound_ctrl_read()
64 		return ERR_PTR(-EINVAL);  in ac97_codec_find()
66 	return ac97_ctrl->codecs[codec_num];  in ac97_codec_find()
80 	for_each_child_of_node(ac97_ctrl->parent->of_node, node) {  in ac97_of_get_child_device()
96 	ac97_ctrl = adev->ac97_ctrl;  in ac97_codec_release()
97 	ac97_ctrl->codecs[adev->num] = NULL;  in ac97_codec_release()
98 	of_node_put(dev->of_node);  in ac97_codec_release()
105 	struct ac97_codec_device *codec;  in ac97_codec_add()  local
108 	codec = kzalloc(sizeof(*codec), GFP_KERNEL);  in ac97_codec_add()
109 	if (!codec)  in ac97_codec_add()
110 		return -ENOMEM;  in ac97_codec_add()
111 	ac97_ctrl->codecs[idx] = codec;  in ac97_codec_add()
112 	codec->vendor_id = vendor_id;  in ac97_codec_add()
113 	codec->dev.release = ac97_codec_release;  in ac97_codec_add()
114 	codec->dev.bus = &ac97_bus_type;  in ac97_codec_add()
115 	codec->dev.parent = &ac97_ctrl->adap;  in ac97_codec_add()
116 	codec->num = idx;  in ac97_codec_add()
117 	codec->ac97_ctrl = ac97_ctrl;  in ac97_codec_add()
119 	device_initialize(&codec->dev);  in ac97_codec_add()
120 	dev_set_name(&codec->dev, "%s:%u", dev_name(ac97_ctrl->parent), idx);  in ac97_codec_add()
121 	codec->dev.of_node = ac97_of_get_child_device(ac97_ctrl, idx,  in ac97_codec_add()
124 	ret = device_add(&codec->dev);  in ac97_codec_add()
126 		put_device(&codec->dev);  in ac97_codec_add()
139 	ret = adrv->ops->read(adrv, codec_num, AC97_VENDOR_ID1);  in snd_ac97_bus_scan_one()
144 	ret = adrv->ops->read(adrv, codec_num, AC97_VENDOR_ID2);  in snd_ac97_bus_scan_one()
149 	dev_dbg(&adrv->adap, "%s(codec_num=%u): vendor_id=0x%08x\n",  in snd_ac97_bus_scan_one()
162 		if (!(ac97_ctrl->slots_available & BIT(i)))  in ac97_bus_scan()
177 	ac97_ctrl->ops->reset(ac97_ctrl);  in ac97_bus_reset()
183  * snd_ac97_codec_driver_register - register an AC97 codec driver
184  * @dev: AC97 driver codec to register
186  * Register an AC97 codec driver to the ac97 bus driver, aka. the AC97 digital
193 	drv->driver.bus = &ac97_bus_type;  in snd_ac97_codec_driver_register()
194 	return driver_register(&drv->driver);  in snd_ac97_codec_driver_register()
199  * snd_ac97_codec_driver_unregister - unregister an AC97 codec driver
200  * @dev: AC97 codec driver to unregister
202  * Unregister a previously registered ac97 codec driver.
206 	driver_unregister(&drv->driver);  in snd_ac97_codec_driver_unregister()
211  * snd_ac97_codec_get_platdata - get platform_data
212  * @adev: the ac97 codec device
214  * For legacy platforms, in order to have platform_data in codec drivers
215  * available, while ac97 device are auto-created upon probe, this retrieves the
222 	struct ac97_controller *ac97_ctrl = adev->ac97_ctrl;  in snd_ac97_codec_get_platdata()
224 	return ac97_ctrl->codecs_pdata[adev->num];  in snd_ac97_codec_get_platdata()
233 		if (ac97_ctrl->codecs[i]) {  in ac97_ctrl_codecs_unregister()
234 			ac97_ctrl->codecs[i]->ac97_ctrl = &ac97_unbound_ctrl;  in ac97_ctrl_codecs_unregister()
235 			device_unregister(&ac97_ctrl->codecs[i]->dev);  in ac97_ctrl_codecs_unregister()
247 	ac97_ctrl->ops->reset(ac97_ctrl);  in cold_reset_store()
260 		return -ENODEV;  in warm_reset_store()
264 	ac97_ctrl->ops->warm_reset(ac97_ctrl);  in warm_reset_store()
290 	list_del(&ac97_ctrl->controllers);  in ac97_del_adapter()
293 	device_unregister(&ac97_ctrl->adap);  in ac97_del_adapter()
301 	idr_remove(&ac97_adapter_idr, ac97_ctrl->nr);  in ac97_adapter_release()
302 	dev_dbg(&ac97_ctrl->adap, "adapter unregistered by %s\n",  in ac97_adapter_release()
303 		dev_name(ac97_ctrl->parent));  in ac97_adapter_release()
317 	ac97_ctrl->nr = ret;  in ac97_add_adapter()
319 		dev_set_name(&ac97_ctrl->adap, "ac97-%d", ret);  in ac97_add_adapter()
320 		ac97_ctrl->adap.type = &ac97_adapter_type;  in ac97_add_adapter()
321 		ac97_ctrl->adap.parent = ac97_ctrl->parent;  in ac97_add_adapter()
322 		ret = device_register(&ac97_ctrl->adap);  in ac97_add_adapter()
324 			put_device(&ac97_ctrl->adap);  in ac97_add_adapter()
327 		list_add(&ac97_ctrl->controllers, &ac97_controllers);  in ac97_add_adapter()
331 		dev_dbg(&ac97_ctrl->adap, "adapter registered by %s\n",  in ac97_add_adapter()
332 			dev_name(ac97_ctrl->parent));  in ac97_add_adapter()
337  * snd_ac97_controller_register - register an ac97 controller
341  *                   bit0 => codec 0, bit1 => codec 1 ... bit 3 => codec 3
344  * the controller side of the AC97 AC-link, while the slave side are the codecs.
357 		return ERR_PTR(-ENOMEM);  in snd_ac97_controller_register()
360 		ac97_ctrl->codecs_pdata[i] = codecs_pdata[i];  in snd_ac97_controller_register()
362 	ac97_ctrl->ops = ops;  in snd_ac97_controller_register()
363 	ac97_ctrl->slots_available = slots_available;  in snd_ac97_controller_register()
364 	ac97_ctrl->parent = dev;  in snd_ac97_controller_register()
380  * snd_ac97_controller_unregister - unregister an ac97 controller
393 	struct ac97_codec_device *codec = to_ac97_device(dev);  in ac97_pm_runtime_suspend()  local
396 	if (ret == 0 && dev->driver) {  in ac97_pm_runtime_suspend()
398 			clk_disable(codec->clk);  in ac97_pm_runtime_suspend()
400 			clk_disable_unprepare(codec->clk);  in ac97_pm_runtime_suspend()
408 	struct ac97_codec_device *codec = to_ac97_device(dev);  in ac97_pm_runtime_resume()  local
411 	if (dev->driver) {  in ac97_pm_runtime_resume()
413 			ret = clk_enable(codec->clk);  in ac97_pm_runtime_resume()
415 			ret = clk_prepare_enable(codec->clk);  in ac97_pm_runtime_resume()
441 	adev->clk = clk_get(&adev->dev, "ac97_clk");  in ac97_get_enable_clk()
442 	if (IS_ERR(adev->clk))  in ac97_get_enable_clk()
443 		return PTR_ERR(adev->clk);  in ac97_get_enable_clk()
445 	ret = clk_prepare_enable(adev->clk);  in ac97_get_enable_clk()
447 		clk_put(adev->clk);  in ac97_get_enable_clk()
454 	clk_disable_unprepare(adev->clk);  in ac97_put_disable_clk()
455 	clk_put(adev->clk);  in ac97_put_disable_clk()
461 	struct ac97_codec_device *codec = to_ac97_device(dev);  in vendor_id_show()  local
463 	return sysfs_emit(buf, "%08x", codec->vendor_id);  in vendor_id_show()
477 	const struct ac97_id *id = adrv->id_table;  in ac97_bus_match()
480 	if (adev->vendor_id == 0x0 || adev->vendor_id == 0xffffffff)  in ac97_bus_match()
484 		if (ac97_ids_match(id[i].id, adev->vendor_id, id[i].mask))  in ac97_bus_match()
494 	struct ac97_codec_driver *adrv = to_ac97_driver(dev->driver);  in ac97_bus_probe()
505 	ret = adrv->probe(adev);  in ac97_bus_probe()
520 	struct ac97_codec_driver *adrv = to_ac97_driver(dev->driver);  in ac97_bus_remove()
527 	ret = adrv->remove(adev);  in ac97_bus_remove()