diff options
Diffstat (limited to 'lib/igt_kms.c')
| -rw-r--r-- | lib/igt_kms.c | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/lib/igt_kms.c b/lib/igt_kms.c index d56f2e562..f57972f19 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -1983,6 +1983,8 @@ void igt_display_require(igt_display_t *display, int drm_fd) /* pipe is enabled/disabled */ pipe->enabled = true; pipe->crtc_id = resources->crtcs[i]; + /* offset of a pipe in crtcs list */ + pipe->crtc_offset = i; } drmSetClientCap(drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1); @@ -4131,18 +4133,27 @@ void igt_pipe_request_out_fence(igt_pipe_t *pipe) /** * igt_wait_for_vblank_count: * @drm_fd: A drm file descriptor - * @pipe: Pipe to wait_for_vblank on + * @crtc_offset: offset of the crtc in drmModeRes.crtcs * @count: Number of vblanks to wait on * * Waits for a given number of vertical blank intervals + * + * In DRM, 'Pipe', as understood by DRM_IOCTL_WAIT_VBLANK, + * is actually an offset of crtc in drmModeRes.crtcs + * and it has nothing to do with a hardware concept of a pipe. + * They can match but don't have to in case of DRM lease or + * non-contiguous pipes. + * + * To make thing clear we are calling DRM_IOCTL_WAIT_VBLANK's 'pipe' + * a crtc_offset. */ -void igt_wait_for_vblank_count(int drm_fd, enum pipe pipe, int count) +void igt_wait_for_vblank_count(int drm_fd, int crtc_offset, int count) { drmVBlank wait_vbl; uint32_t pipe_id_flag; memset(&wait_vbl, 0, sizeof(wait_vbl)); - pipe_id_flag = kmstest_get_vbl_flag(pipe); + pipe_id_flag = kmstest_get_vbl_flag(crtc_offset); wait_vbl.request.type = DRM_VBLANK_RELATIVE; wait_vbl.request.type |= pipe_id_flag; @@ -4154,13 +4165,15 @@ void igt_wait_for_vblank_count(int drm_fd, enum pipe pipe, int count) /** * igt_wait_for_vblank: * @drm_fd: A drm file descriptor - * @pipe: Pipe to wait_for_vblank on + * @crtc_offset: offset of a crtc in drmModeRes.crtcs + * + * See #igt_wait_for_vblank_count for more details * * Waits for 1 vertical blank intervals */ -void igt_wait_for_vblank(int drm_fd, enum pipe pipe) +void igt_wait_for_vblank(int drm_fd, int crtc_offset) { - igt_wait_for_vblank_count(drm_fd, pipe, 1); + igt_wait_for_vblank_count(drm_fd, crtc_offset, 1); } /** @@ -4383,22 +4396,27 @@ void igt_cleanup_uevents(struct udev_monitor *mon) /** * kmstest_get_vbl_flag: - * @pipe_id: Pipe to convert to flag representation. + * @crtc_offset: CRTC offset to convert into pipe flag representation. * - * Convert a pipe id into the flag representation - * expected in DRM while processing DRM_IOCTL_WAIT_VBLANK. + * Convert an offset of an crtc in drmModeRes.crtcs into flag representation + * expected by DRM_IOCTL_WAIT_VBLANK. + * See #igt_wait_for_vblank_count for details */ -uint32_t kmstest_get_vbl_flag(uint32_t pipe_id) +uint32_t kmstest_get_vbl_flag(int crtc_offset) { - if (pipe_id == 0) - return 0; - else if (pipe_id == 1) - return _DRM_VBLANK_SECONDARY; + uint32_t pipe_id; + + if (crtc_offset == 0) + pipe_id = 0; + else if (crtc_offset == 1) + pipe_id = _DRM_VBLANK_SECONDARY; else { - uint32_t pipe_flag = pipe_id << 1; + uint32_t pipe_flag = crtc_offset << 1; igt_assert(!(pipe_flag & ~DRM_VBLANK_HIGH_CRTC_MASK)); - return pipe_flag; + pipe_id = pipe_flag; } + + return pipe_id; } static inline const uint32_t * |