/* SPDX-License-Identifier: GPL-2.0 * *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr> */ #ifndef __SOUND_AC97_CODEC2_H#define __SOUND_AC97_CODEC2_H #include <linux/device.h> #define AC97_ID(vendor_id1, vendor_id2) \	((((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff))#define AC97_DRIVER_ID(vendor_id1, vendor_id2, mask_id1, mask_id2, _data) \	{ .id = (((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff), \	  .mask = (((mask_id1) & 0xffff) << 16) | ((mask_id2) & 0xffff), \	  .data = (_data) } struct ac97_controller;struct clk; /** * struct ac97_id - matches a codec device and driver on an ac97 bus * @id: The significant bits if the codec vendor ID1 and ID2 * @mask: Bitmask specifying which bits of the id field are significant when *	  matching. A driver binds to a device when : *        ((vendorID1 << 8 | vendorID2) & (mask_id1 << 8 | mask_id2)) == id. * @data: Private data used by the driver. */struct ac97_id {	unsigned int		id;	unsigned int		mask;	void			*data;}; /** * struct ac97_codec_device - a ac97 codec * @dev: the core device * @vendor_id: the vendor_id of the codec, as sensed on the AC-link * @num: the codec number, 0 is primary, 1 is first slave, etc ... * @clk: the clock BIT_CLK provided by the codec * @ac97_ctrl: ac97 digital controller on the same AC-link * * This is the device instantiated for each codec living on a AC-link. There are * normally 0 to 4 codec devices per AC-link, and all of them are controlled by * an AC97 digital controller. */struct ac97_codec_device {	struct device		dev;	unsigned int		vendor_id;	unsigned int		num;	struct clk		*clk;	struct ac97_controller	*ac97_ctrl;}; /** * struct ac97_codec_driver - a ac97 codec driver * @driver: the device driver structure * @probe: the function called when a ac97_codec_device is matched * @remove: the function called when the device is unbound/removed * @shutdown: shutdown function (might be NULL) * @id_table: ac97 vendor_id match table, { } member terminated */struct ac97_codec_driver {	struct device_driver	driver;	int			(*probe)(struct ac97_codec_device *);	void			(*remove)(struct ac97_codec_device *dev);	void			(*shutdown)(struct ac97_codec_device *);	const struct ac97_id	*id_table;}; static inline struct ac97_codec_device *to_ac97_device(struct device *d){	return container_of(d, struct ac97_codec_device, dev);} #define to_ac97_driver(__drv) container_of_const(__drv, struct ac97_codec_driver, driver) #if IS_ENABLED(CONFIG_AC97_BUS_NEW)int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv);void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv);#elsestatic inline intsnd_ac97_codec_driver_register(struct ac97_codec_driver *drv){	return 0;}static inline voidsnd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv){}#endif  static inline struct device *ac97_codec_dev2dev(struct ac97_codec_device *adev){	return &adev->dev;} static inline void *ac97_get_drvdata(struct ac97_codec_device *adev){	return dev_get_drvdata(ac97_codec_dev2dev(adev));} static inline void ac97_set_drvdata(struct ac97_codec_device *adev,				    void *data){	dev_set_drvdata(ac97_codec_dev2dev(adev), data);} static inline void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev){	return NULL;} #endif