On 2016-05-10 01:54 PM, Ville Syrjälä wrote:
On Tue, Apr 26, 2016 at 11:54:22AM -0400, robert.foss@xxxxxxxxxxxxx wrote:From: Robert Foss <robert.foss@xxxxxxxxxxxxx> Added function pipe_id_to_vbl_flag() to igt_kms. This function formats a pipe_id into the format expected by DRM while processing DRM_IOCTL_WAIT_VBLANK. Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx> --- lib/igt_kms.c | 16 ++++++++++++++++ lib/igt_kms.h | 1 + 2 files changed, 17 insertions(+) diff --git a/lib/igt_kms.c b/lib/igt_kms.c index 99b6279..48b95e6 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -2557,3 +2557,19 @@ void igt_reset_connectors(void) close(fd); } } + +/** + * pipe_id_to_vbl_flag: + * + * Convert a pipe if into the flag representation + * expected in DRM while processing DRM_IOCTL_WAIT_VBLANK. + */ +uint32_t pipe_id_to_vbl_flag(uint32_t pipe_id) +{ + if (pipe_id == 0) + return 0; + else if (pipe_id == 1) + return 1 | _DRM_VBLANK_SECONDARY;The '1 |' means this will always end up as DRM_VBLANK_RELATIVE.
Ah, of course. I will look into the proper formatting and submit it in v5. Thank you Ville for having a look at this. Rob.
+ else + return pipe_id << 1; +} diff --git a/lib/igt_kms.h b/lib/igt_kms.h index d9a4e11..f74edaf 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -400,6 +400,7 @@ void igt_wait_for_vblank(int drm_fd, enum pipe pipe); void igt_enable_connectors(void); void igt_reset_connectors(void); +uint32_t pipe_id_to_vbl_flag(uint32_t pipe_id); #define EDID_LENGTH 128 const unsigned char* igt_kms_get_base_edid(void); -- 2.5.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
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