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 #include <linux/fb.h> 11 12 enum vga_switcheroo_state { 13 VGA_SWITCHEROO_OFF, 14 VGA_SWITCHEROO_ON, 15 }; 16 17 enum vga_switcheroo_client_id { 18 VGA_SWITCHEROO_IGD, 19 VGA_SWITCHEROO_DIS, 20 VGA_SWITCHEROO_MAX_CLIENTS, 21 }; 22 23 struct 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) 33 void vga_switcheroo_unregister_client(struct pci_dev *dev); 34 int vga_switcheroo_register_client(struct pci_dev *dev, 35 void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state), 36 void (*reprobe)(struct pci_dev *dev), 37 bool (*can_switch)(struct pci_dev *dev)); 38 39 void vga_switcheroo_client_fb_set(struct pci_dev *dev, 40 struct fb_info *info); 41 42 int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler); 43 void vga_switcheroo_unregister_handler(void); 44 45 int vga_switcheroo_process_delayed_switch(void); 46 47 #else 48 49 static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {} 50 static inline int vga_switcheroo_register_client(struct pci_dev *dev, 51 void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state), 52 void (*reprobe)(struct pci_dev *dev), 53 bool (*can_switch)(struct pci_dev *dev)) { return 0; } 54 static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {} 55 static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; } 56 static inline void vga_switcheroo_unregister_handler(void) {} 57 static inline int vga_switcheroo_process_delayed_switch(void) { return 0; } 58 59 #endif 60