2 * Copyright (c) 2010 Red Hat Inc.
3 * Author : Dave Airlie <airlied@redhat.com>
7 * vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
12 enum vga_switcheroo_state {
17 enum vga_switcheroo_client_id {
20 VGA_SWITCHEROO_MAX_CLIENTS,
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);
28 int (*get_client_id)(struct pci_dev *pdev);
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 bool (*can_switch)(struct pci_dev *dev));
38 void vga_switcheroo_client_fb_set(struct pci_dev *dev,
39 struct fb_info *info);
41 int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
42 void vga_switcheroo_unregister_handler(void);
44 int vga_switcheroo_process_delayed_switch(void);
48 static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
49 static inline int vga_switcheroo_register_client(struct pci_dev *dev,
50 void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
51 bool (*can_switch)(struct pci_dev *dev)) { return 0; }
52 static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
53 static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
54 static inline void vga_switcheroo_unregister_handler(void) {}
55 static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }