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
10 #ifndef _LINUX_VGA_SWITCHEROO_H_
11 #define _LINUX_VGA_SWITCHEROO_H_
17 enum vga_switcheroo_state
{
20 /* below are referred only from vga_switcheroo_get_client_state() */
22 VGA_SWITCHEROO_NOT_FOUND
,
25 enum vga_switcheroo_client_id
{
28 VGA_SWITCHEROO_MAX_CLIENTS
,
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
);
36 int (*get_client_id
)(struct pci_dev
*pdev
);
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
);
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
,
54 void vga_switcheroo_client_fb_set(struct pci_dev
*dev
,
55 struct fb_info
*info
);
57 int vga_switcheroo_register_handler(struct vga_switcheroo_handler
*handler
);
58 void vga_switcheroo_unregister_handler(void);
60 int vga_switcheroo_process_delayed_switch(void);
62 int vga_switcheroo_get_client_state(struct pci_dev
*dev
);
64 void vga_switcheroo_set_dynamic_switch(struct pci_dev
*pdev
, enum vga_switcheroo_state dynamic
);
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
);
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
; }
82 static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev
*pdev
, enum vga_switcheroo_state dynamic
) {}
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
; }
88 #endif /* _LINUX_VGA_SWITCHEROO_H_ */