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
10 #include <linux/fb.h>
11
12 enum vga_switcheroo_state {
13 VGA_SWITCHEROO_OFF,
14 VGA_SWITCHEROO_ON,
15 };
16
17 enum vga_switcheroo_client_id {
18 VGA_SWITCHEROO_IGD,
19 VGA_SWITCHEROO_DIS,
20 VGA_SWITCHEROO_MAX_CLIENTS,
21 };
22
23 struct vga_switcheroo_handler {
24 int (*switchto)(enum vga_switcheroo_client_id id);
25 int (*power_state)(enum vga_switcheroo_client_id id,
26 enum vga_switcheroo_state state);
27 int (*init)(void);
28 int (*get_client_id)(struct pci_dev *pdev);
29 };
30
31
32 #if defined(CONFIG_VGA_SWITCHEROO)
33 void vga_switcheroo_unregister_client(struct pci_dev *dev);
34 int vga_switcheroo_register_client(struct pci_dev *dev,
35 void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
36 void (*reprobe)(struct pci_dev *dev),
37 bool (*can_switch)(struct pci_dev *dev));
38
39 void vga_switcheroo_client_fb_set(struct pci_dev *dev,
40 struct fb_info *info);
41
42 int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
43 void vga_switcheroo_unregister_handler(void);
44
45 int vga_switcheroo_process_delayed_switch(void);
46
47 #else
48
vga_switcheroo_unregister_client(struct pci_dev * dev)49 static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
vga_switcheroo_register_client(struct pci_dev * dev,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))50 static inline int vga_switcheroo_register_client(struct pci_dev *dev,
51 void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
52 void (*reprobe)(struct pci_dev *dev),
53 bool (*can_switch)(struct pci_dev *dev)) { return 0; }
vga_switcheroo_client_fb_set(struct pci_dev * dev,struct fb_info * info)54 static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
vga_switcheroo_register_handler(struct vga_switcheroo_handler * handler)55 static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
vga_switcheroo_unregister_handler(void)56 static inline void vga_switcheroo_unregister_handler(void) {}
vga_switcheroo_process_delayed_switch(void)57 static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
58
59 #endif
60