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kernel add
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#ifndef __NOUVEAU_VGA_H__
#define __NOUVEAU_VGA_H__
#include <core/subdev.h>
/* access to various legacy io ports */
u8 nvkm_rdport(struct nvkm_device *, int head, u16 port);
void nvkm_wrport(struct nvkm_device *, int head, u16 port, u8 value);
/* VGA Sequencer */
u8 nvkm_rdvgas(struct nvkm_device *, int head, u8 index);
void nvkm_wrvgas(struct nvkm_device *, int head, u8 index, u8 value);
/* VGA Graphics */
u8 nvkm_rdvgag(struct nvkm_device *, int head, u8 index);
void nvkm_wrvgag(struct nvkm_device *, int head, u8 index, u8 value);
/* VGA CRTC */
u8 nvkm_rdvgac(struct nvkm_device *, int head, u8 index);
void nvkm_wrvgac(struct nvkm_device *, int head, u8 index, u8 value);
/* VGA indexed port access dispatcher */
u8 nvkm_rdvgai(struct nvkm_device *, int head, u16 port, u8 index);
void nvkm_wrvgai(struct nvkm_device *, int head, u16 port, u8 index, u8 value);
bool nvkm_lockvgac(struct nvkm_device *, bool lock);
u8 nvkm_rdvgaowner(struct nvkm_device *);
void nvkm_wrvgaowner(struct nvkm_device *, u8);
#endif
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