Eric Lee / linux-smarc-t335x-v3.2

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include/linux/vga_switcheroo.h 1.87 KB
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6a9ee8af3   Dave Airlie   vga_switcheroo: i... 
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  /*
   * Copyright (c) 2010 Red Hat Inc.
   * Author : Dave Airlie <airlied@redhat.com>
   *
   * Licensed under GPLv2
   *
   * vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
   */
6a9ee8af3   Dave Airlie   vga_switcheroo: i... 
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  #include <linux/fb.h>
  
  enum vga_switcheroo_state {
  	VGA_SWITCHEROO_OFF,
  	VGA_SWITCHEROO_ON,
  };
  
  enum vga_switcheroo_client_id {
  	VGA_SWITCHEROO_IGD,
  	VGA_SWITCHEROO_DIS,
  	VGA_SWITCHEROO_MAX_CLIENTS,
  };
  
  struct vga_switcheroo_handler {
  	int (*switchto)(enum vga_switcheroo_client_id id);
  	int (*power_state)(enum vga_switcheroo_client_id id,
  			   enum vga_switcheroo_state state);
  	int (*init)(void);
  	int (*get_client_id)(struct pci_dev *pdev);
  };
  
  
  #if defined(CONFIG_VGA_SWITCHEROO)
  void vga_switcheroo_unregister_client(struct pci_dev *dev);
  int vga_switcheroo_register_client(struct pci_dev *dev,
  				   void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
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  				   void (*reprobe)(struct pci_dev *dev),
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  				   bool (*can_switch)(struct pci_dev *dev));
  
  void vga_switcheroo_client_fb_set(struct pci_dev *dev,
  				  struct fb_info *info);
  
  int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
  void vga_switcheroo_unregister_handler(void);
  
  int vga_switcheroo_process_delayed_switch(void);
  
  #else
  
  static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
  static inline int vga_switcheroo_register_client(struct pci_dev *dev,
  					  void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
af5dd83b8   Dave Airlie   vga_switcheroo: f... 
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  					  void (*reprobe)(struct pci_dev *dev),
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  					  bool (*can_switch)(struct pci_dev *dev)) { return 0; }
  static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
  static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
  static inline void vga_switcheroo_unregister_handler(void) {}
  static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
  
  #endif