LXR linux/include/linux/vga

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