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 {
15 /* below are referred only from vga_switcheroo_get_client_state() */
17 VGA_SWITCHEROO_NOT_FOUND,
20 enum vga_switcheroo_client_id {
23 VGA_SWITCHEROO_MAX_CLIENTS,
26 struct vga_switcheroo_handler {
27 int (*switchto)(enum vga_switcheroo_client_id id);
28 int (*power_state)(enum vga_switcheroo_client_id id,
29 enum vga_switcheroo_state state);
31 int (*get_client_id)(struct pci_dev *pdev);
34 struct vga_switcheroo_client_ops {
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);
40 #if defined(CONFIG_VGA_SWITCHEROO)
41 void vga_switcheroo_unregister_client(struct pci_dev *dev);
42 int vga_switcheroo_register_client(struct pci_dev *dev,
43 const struct vga_switcheroo_client_ops *ops);
44 int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
45 const struct vga_switcheroo_client_ops *ops,
48 void vga_switcheroo_client_fb_set(struct pci_dev *dev,
49 struct fb_info *info);
51 int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
52 void vga_switcheroo_unregister_handler(void);
54 int vga_switcheroo_process_delayed_switch(void);
56 int vga_switcheroo_get_client_state(struct pci_dev *dev);
60 static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
61 static inline int vga_switcheroo_register_client(struct pci_dev *dev,
62 const struct vga_switcheroo_client_ops *ops) { return 0; }
63 static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
64 static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
65 static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
66 const struct vga_switcheroo_client_ops *ops,
67 int id, bool active) { return 0; }
68 static inline void vga_switcheroo_unregister_handler(void) {}
69 static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
70 static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }