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https://github.com/edk2-porting/linux-next.git
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58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
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/*
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* Copyright (c) 2010 Red Hat Inc.
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* Author : Dave Airlie <airlied@redhat.com>
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*
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* Licensed under GPLv2
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*
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* vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
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*/
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#include <linux/fb.h>
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enum vga_switcheroo_state {
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VGA_SWITCHEROO_OFF,
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VGA_SWITCHEROO_ON,
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};
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enum vga_switcheroo_client_id {
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VGA_SWITCHEROO_IGD,
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VGA_SWITCHEROO_DIS,
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VGA_SWITCHEROO_MAX_CLIENTS,
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};
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struct vga_switcheroo_handler {
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int (*switchto)(enum vga_switcheroo_client_id id);
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int (*power_state)(enum vga_switcheroo_client_id id,
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enum vga_switcheroo_state state);
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int (*init)(void);
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int (*get_client_id)(struct pci_dev *pdev);
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};
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#if defined(CONFIG_VGA_SWITCHEROO)
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void vga_switcheroo_unregister_client(struct pci_dev *dev);
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int vga_switcheroo_register_client(struct pci_dev *dev,
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void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
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bool (*can_switch)(struct pci_dev *dev));
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void vga_switcheroo_client_fb_set(struct pci_dev *dev,
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struct fb_info *info);
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int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
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void vga_switcheroo_unregister_handler(void);
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int vga_switcheroo_process_delayed_switch(void);
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#else
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static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
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static inline int vga_switcheroo_register_client(struct pci_dev *dev,
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void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
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bool (*can_switch)(struct pci_dev *dev)) { return 0; }
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static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
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static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
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static inline void vga_switcheroo_unregister_handler(void) {}
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static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
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#endif
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