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#ifndef _LINUX_VGA_SWITCHEROO_H_
11#define _LINUX_VGA_SWITCHEROO_H_
12
13#include <linux/fb.h>
14
15struct pci_dev;
16
17enum vga_switcheroo_state {
18 VGA_SWITCHEROO_OFF,
19 VGA_SWITCHEROO_ON,
20 /* below are referred only from vga_switcheroo_get_client_state() */
21 VGA_SWITCHEROO_INIT,
22 VGA_SWITCHEROO_NOT_FOUND,
23};
24
25enum vga_switcheroo_client_id {
26 VGA_SWITCHEROO_IGD,
27 VGA_SWITCHEROO_DIS,
28 VGA_SWITCHEROO_MAX_CLIENTS,
29};
30
31struct vga_switcheroo_handler {
32 int (*switchto)(enum vga_switcheroo_client_id id);
33 int (*power_state)(enum vga_switcheroo_client_id id,
34 enum vga_switcheroo_state state);
35 int (*init)(void);
36 int (*get_client_id)(struct pci_dev *pdev);
37};
38
39struct vga_switcheroo_client_ops {
40 void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state);
41 void (*reprobe)(struct pci_dev *dev);
42 bool (*can_switch)(struct pci_dev *dev);
43};
44
45#if defined(CONFIG_VGA_SWITCHEROO)
46void vga_switcheroo_unregister_client(struct pci_dev *dev);
47int vga_switcheroo_register_client(struct pci_dev *dev,
48 const struct vga_switcheroo_client_ops *ops);
49int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
50 const struct vga_switcheroo_client_ops *ops,
51 int id, bool active);
52
53void vga_switcheroo_client_fb_set(struct pci_dev *dev,
54 struct fb_info *info);
55
56int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
57void vga_switcheroo_unregister_handler(void);
58
59int vga_switcheroo_process_delayed_switch(void);
60
61int vga_switcheroo_get_client_state(struct pci_dev *dev);
62
63#else
64
65static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
66static inline int vga_switcheroo_register_client(struct pci_dev *dev,
67 const struct vga_switcheroo_client_ops *ops) { return 0; }
68static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
69static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
70static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
71 const struct vga_switcheroo_client_ops *ops,
72 int id, bool active) { return 0; }
73static inline void vga_switcheroo_unregister_handler(void) {}
74static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
75static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }
76
77
78#endif
79#endif /* _LINUX_VGA_SWITCHEROO_H_ */