tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
12enum vga_switcheroo_state {
13 VGA_SWITCHEROO_OFF,
14 VGA_SWITCHEROO_ON,
15};
16
17enum vga_switcheroo_client_id {
18 VGA_SWITCHEROO_IGD,
19 VGA_SWITCHEROO_DIS,
20 VGA_SWITCHEROO_MAX_CLIENTS,
21};
22
23struct 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)
33void vga_switcheroo_unregister_client(struct pci_dev *dev);
34int 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));
37
38void vga_switcheroo_client_fb_set(struct pci_dev *dev,
39 struct fb_info *info);
40
41int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
42void vga_switcheroo_unregister_handler(void);
43
44int vga_switcheroo_process_delayed_switch(void);
45
46#else
47
48static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
49static 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; }
52static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
53static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
54static inline void vga_switcheroo_unregister_handler(void) {}
55static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
56
57#endif