Instead of checking that there's a CRTC in pipe 0 with a valid mode,
check that we can get a vblank in the primary display controller.
This should be equivalent, but also works with drivers other than i915.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
tests/drm_read.c | 39 +++++----------------------------------
1 file changed, 5 insertions(+), 34 deletions(-)
diff --git a/tests/drm_read.c b/tests/drm_read.c
index faa3df862ea6..52dfa8ab8781 100644
--- a/tests/drm_read.c
+++ b/tests/drm_read.c
@@ -189,46 +189,17 @@ static void test_short_buffer(int in, int nonblock)
teardown(fd);
}
-static int pipe0_enabled(int fd)
+static bool pipe0_enabled(int fd)
{
- struct drm_mode_card_res res;
- uint32_t crtcs[32];
- int i;
+ union drm_wait_vblank vbl;
/* We assume we can generate events on pipe 0. So we have better
* make sure that is running!
*/
- memset(&res, 0, sizeof(res));
- res.count_crtcs = 32;
- res.crtc_id_ptr = (uintptr_t)crtcs;
-
- if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
- return 0;
-
- if (res.count_crtcs > 32)
- return 0;
-
- for (i = 0; i < res.count_crtcs; i++) {
- struct drm_i915_get_pipe_from_crtc_id get_pipe;
- struct drm_mode_crtc mode;
-
- memset(&get_pipe, 0, sizeof(get_pipe));
- memset(&mode, 0, sizeof(mode));
-
- mode.crtc_id = crtcs[i];
-
- get_pipe.pipe = -1;
- get_pipe.crtc_id = mode.crtc_id;
- drmIoctl(fd, DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID, &get_pipe);
- if (get_pipe.pipe)
- continue;
-
- drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &mode);
- return mode.mode_valid && mode.mode.clock;
- }
-
- return 0;
+ memset(&vbl, 0, sizeof(vbl));
+ vbl.request.type = DRM_VBLANK_RELATIVE;
+ return drmIoctl(fd, DRM_IOCTL_WAIT_VBLANK, &vbl) == 0;
}
igt_main
--
2.5.0
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