1 /* 2 * Copyright (c) 2010 Red Hat Inc. 3 * Author : Dave Airlie <[email protected]> 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