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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 | |
15 | struct pci_dev; |
16 | |
17 | enum 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 | |
25 | enum vga_switcheroo_client_id { |
26 | VGA_SWITCHEROO_IGD, |
27 | VGA_SWITCHEROO_DIS, |
28 | VGA_SWITCHEROO_MAX_CLIENTS, |
29 | }; |
30 | |
31 | struct 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 | |
39 | struct 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) |
46 | void vga_switcheroo_unregister_client(struct pci_dev *dev); |
47 | int vga_switcheroo_register_client(struct pci_dev *dev, |
48 | const struct vga_switcheroo_client_ops *ops, |
49 | bool driver_power_control); |
50 | int vga_switcheroo_register_audio_client(struct pci_dev *pdev, |
51 | const struct vga_switcheroo_client_ops *ops, |
52 | int id, bool active); |
53 | |
54 | void vga_switcheroo_client_fb_set(struct pci_dev *dev, |
55 | struct fb_info *info); |
56 | |
57 | int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler); |
58 | void vga_switcheroo_unregister_handler(void); |
59 | |
60 | int vga_switcheroo_process_delayed_switch(void); |
61 | |
62 | int vga_switcheroo_get_client_state(struct pci_dev *dev); |
63 | |
64 | void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic); |
65 | |
66 | int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain); |
67 | int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain); |
68 | #else |
69 | |
70 | static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {} |
71 | static inline int vga_switcheroo_register_client(struct pci_dev *dev, |
72 | const struct vga_switcheroo_client_ops *ops, bool driver_power_control) { return 0; } |
73 | static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {} |
74 | static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; } |
75 | static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev, |
76 | const struct vga_switcheroo_client_ops *ops, |
77 | int id, bool active) { return 0; } |
78 | static inline void vga_switcheroo_unregister_handler(void) {} |
79 | static inline int vga_switcheroo_process_delayed_switch(void) { return 0; } |
80 | static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; } |
81 | |
82 | static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic) {} |
83 | |
84 | static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; } |
85 | static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; } |
86 | |
87 | #endif |
88 | #endif /* _LINUX_VGA_SWITCHEROO_H_ */ |
89 |
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