[linux-2.6-block.git] / include / linux / vga_switcheroo.h

/*
 * Copyright (c) 2010 Red Hat Inc.
 * Author : Dave Airlie <airlied@redhat.com>
 *
 * Licensed under GPLv2
 *
 * vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
 */

#include <linux/fb.h>

struct pci_dev;

enum vga_switcheroo_state {
	VGA_SWITCHEROO_OFF,
	VGA_SWITCHEROO_ON,
	/* below are referred only from vga_switcheroo_get_client_state() */
	VGA_SWITCHEROO_INIT,
	VGA_SWITCHEROO_NOT_FOUND,
};

enum vga_switcheroo_client_id {
	VGA_SWITCHEROO_IGD,
	VGA_SWITCHEROO_DIS,
	VGA_SWITCHEROO_MAX_CLIENTS,
};

struct vga_switcheroo_handler {
	int (*switchto)(enum vga_switcheroo_client_id id);
	int (*power_state)(enum vga_switcheroo_client_id id,
			   enum vga_switcheroo_state state);
	int (*init)(void);
	int (*get_client_id)(struct pci_dev *pdev);
};

struct vga_switcheroo_client_ops {
	void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state);
	void (*reprobe)(struct pci_dev *dev);
	bool (*can_switch)(struct pci_dev *dev);
};

#if defined(CONFIG_VGA_SWITCHEROO)
void vga_switcheroo_unregister_client(struct pci_dev *dev);
int vga_switcheroo_register_client(struct pci_dev *dev,
				   const struct vga_switcheroo_client_ops *ops);
int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
					 const struct vga_switcheroo_client_ops *ops,
					 int id, bool active);

void vga_switcheroo_client_fb_set(struct pci_dev *dev,
				  struct fb_info *info);

int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
void vga_switcheroo_unregister_handler(void);

int vga_switcheroo_process_delayed_switch(void);

int vga_switcheroo_get_client_state(struct pci_dev *dev);

#else

static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
static inline int vga_switcheroo_register_client(struct pci_dev *dev,
		const struct vga_switcheroo_client_ops *ops) { return 0; }
static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
	const struct vga_switcheroo_client_ops *ops,
	int id, bool active) { return 0; }
static inline void vga_switcheroo_unregister_handler(void) {}
static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }


#endif
Commit	Line	Data
6a9ee8af DA	1	/*
	2	* Copyright (c) 2010 Red Hat Inc.
	3	* Author : Dave Airlie <airlied@redhat.com>
	4	*
	5	* Licensed under GPLv2
	6	*
	7	* vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
	8	*/
	9
6a9ee8af DA	10	#include <linux/fb.h>
6a9ee8af DA	11
f8fee8f5 RD	12	struct pci_dev;
f8fee8f5 RD	13
6a9ee8af DA	14	enum vga_switcheroo_state {
	15	VGA_SWITCHEROO_OFF,
	16	VGA_SWITCHEROO_ON,
c8e9cf7b TI	17	/* below are referred only from vga_switcheroo_get_client_state() */
	18	VGA_SWITCHEROO_INIT,
	19	VGA_SWITCHEROO_NOT_FOUND,
6a9ee8af DA	20	};
	21
	22	enum vga_switcheroo_client_id {
	23	VGA_SWITCHEROO_IGD,
	24	VGA_SWITCHEROO_DIS,
	25	VGA_SWITCHEROO_MAX_CLIENTS,
	26	};
	27
	28	struct vga_switcheroo_handler {
	29	int (*switchto)(enum vga_switcheroo_client_id id);
	30	int (*power_state)(enum vga_switcheroo_client_id id,
	31	enum vga_switcheroo_state state);
	32	int (*init)(void);
	33	int (get_client_id)(struct pci_dev pdev);
	34	};
	35
26ec685f TI	36	struct vga_switcheroo_client_ops {
	37	void (set_gpu_state)(struct pci_dev dev, enum vga_switcheroo_state);
	38	void (reprobe)(struct pci_dev dev);
	39	bool (can_switch)(struct pci_dev dev);
	40	};
6a9ee8af DA	41
	42	#if defined(CONFIG_VGA_SWITCHEROO)
	43	void vga_switcheroo_unregister_client(struct pci_dev *dev);
	44	int vga_switcheroo_register_client(struct pci_dev *dev,
26ec685f	45	const struct vga_switcheroo_client_ops *ops);
3e9e63db TI	46	int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
	47	const struct vga_switcheroo_client_ops *ops,
	48	int id, bool active);
6a9ee8af DA	49
	50	void vga_switcheroo_client_fb_set(struct pci_dev *dev,
	51	struct fb_info *info);
	52
	53	int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
	54	void vga_switcheroo_unregister_handler(void);
	55
	56	int vga_switcheroo_process_delayed_switch(void);
	57
c8e9cf7b TI	58	int vga_switcheroo_get_client_state(struct pci_dev *dev);
c8e9cf7b TI	59
6a9ee8af DA	60	#else
	61
	62	static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
	63	static inline int vga_switcheroo_register_client(struct pci_dev *dev,
26ec685f	64	const struct vga_switcheroo_client_ops *ops) { return 0; }
6a9ee8af DA	65	static inline void vga_switcheroo_client_fb_set(struct pci_dev dev, struct fb_info info) {}
6a9ee8af DA	66	static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
3e9e63db TI	67	static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
	68	const struct vga_switcheroo_client_ops *ops,
	69	int id, bool active) { return 0; }
6a9ee8af DA	70	static inline void vga_switcheroo_unregister_handler(void) {}
6a9ee8af DA	71	static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
505cff00	72	static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }
c8e9cf7b	73
6a9ee8af DA	74
6a9ee8af DA	75	#endif