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Add new drm_intel_get_pipe_from_crtc_id function. 

This wraps the new DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID ioctl,
allowing applications to discover the pipe number corresponding
to a given CRTC ID. This is necessary for doing pipe-specific
operations such as waiting for vblank on a given CRTC.
main
Carl Worth 2009-04-29 14:43:55 -07:00 committed by Keith Packard
parent 8b8e20e0f9
commit afd245dd7f
3 changed files with 35 additions and 0 deletions
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2
libdrm/intel/intel_bufmgr.h
View File

@ -120,6 +120,8 @@ int drm_intel_gem_bo_map_gtt(drm_intel_bo *bo);
int drm_intel_gem_bo_unmap_gtt(drm_intel_bo *bo);
void drm_intel_gem_bo_start_gtt_access(drm_intel_bo *bo, int write_enable);
int drm_intel_get_pipe_from_crtc_id(drm_intel_bufmgr *bufmgr, int crtc_id);
/* drm_intel_bufmgr_fake.c */
drm_intel_bufmgr *drm_intel_bufmgr_fake_init(int fd,
unsigned long low_offset,

23
libdrm/intel/intel_bufmgr_gem.c
View File

@ -815,6 +815,29 @@ drm_intel_gem_bo_subdata (drm_intel_bo *bo, unsigned long offset,
return 0;
}
int
drm_intel_get_pipe_from_crtc_id (drm_intel_bufmgr *bufmgr, int crtc_id)
{
drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *) bufmgr;
struct drm_i915_get_pipe_from_crtc_id get_pipe_from_crtc_id;
int ret;
get_pipe_from_crtc_id.crtc_id = crtc_id;
ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID,
&get_pipe_from_crtc_id);
if (ret != 0) {
/* We're intentionally silent here so that there is no
* complaint when simply running with an older kernel that
* doesn't have the GET_PIPE_FROM_CRTC_ID ioctly. In that
* case, we just punt and try to sync on pipe 0, which is
* hopefully the right pipe in some cases at least.
*/
return 0;
}
return get_pipe_from_crtc_id.pipe;
}
static int
drm_intel_gem_bo_get_subdata (drm_intel_bo *bo, unsigned long offset,
unsigned long size, void *data)

10
shared-core/i915_drm.h
View File

@ -205,6 +205,7 @@ typedef struct drm_i915_sarea {
#define DRM_I915_GEM_GET_TILING 0x22
#define DRM_I915_GEM_GET_APERTURE 0x23
#define DRM_I915_GEM_MMAP_GTT 0x24
#define DRM_I915_GET_PIPE_FROM_CRTC_ID 0x25
#define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
#define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@ -242,6 +243,7 @@ typedef struct drm_i915_sarea {
#define DRM_IOCTL_I915_GEM_SET_TILING DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_SET_TILING, struct drm_i915_gem_set_tiling)
#define DRM_IOCTL_I915_GEM_GET_TILING DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_TILING, struct drm_i915_gem_get_tiling)
#define DRM_IOCTL_I915_GEM_GET_APERTURE DRM_IOR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_APERTURE, struct drm_i915_gem_get_aperture)
#define DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GET_PIPE_FROM_CRTC_ID, struct drm_i915_get_pipe_from_crtc_id)
/* Asynchronous page flipping:
*/
@ -769,4 +771,12 @@ struct drm_i915_gem_get_aperture {
uint64_t aper_available_size;
};
struct drm_i915_get_pipe_from_crtc_id {
/** ID of CRTC being requested **/
uint32_t crtc_id;
/** pipe of requested CRTC **/
uint32_t pipe;
};
#endif /* _I915_DRM_H_ */