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| author | Mario Kleiner <mario.kleiner.de@gmail.com> | 2014-03-14 18:27:53 +0100 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2014-06-21 17:12:26 +1000 |
| commit | 4d92001ebe6bec8c5eaab8156421e62a7e4dedc8 (patch) | |
| tree | bde67a05e9ce5485281b003ed5425b8f48fa18c0 | |
| parent | 54dfbb2fed393b65d846e6ed9672acb47e0f19de (diff) | |
Add kernel async_flip cap detection. Part II of double-sync fix.
Query if kernel supports the async_flip cap, thereby needs the
new sync behavior. Linux 3.13+ nouveau-kms have this cap and
need this fix.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | src/nv_driver.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/nv_driver.c b/src/nv_driver.c index db66de6..3ca65c5 100644 --- a/src/nv_driver.c +++ b/src/nv_driver.c @@ -1134,6 +1134,17 @@ NVPreInit(ScrnInfoPtr pScrn, int flags) xf86DrvMsg(pScrn->scrnIndex, from, "Swap limit set to %d [Max allowed %d]%s\n", pNv->swap_limit, pNv->max_swap_limit, reason); + /* Does kernel do the sync of pageflips to vblank? */ + pNv->has_async_pageflip = FALSE; +#ifdef DRM_CAP_ASYNC_PAGE_FLIP + ret = drmGetCap(pNv->dev->fd, DRM_CAP_ASYNC_PAGE_FLIP, &v); + if (ret == 0 && v == 1) { + pNv->has_async_pageflip = TRUE; + } + xf86DrvMsg(pScrn->scrnIndex, X_DEFAULT, "Page flipping synced to vblank by %s.\n", + pNv->has_async_pageflip ? "kernel" : "ddx"); +#endif + ret = drmmode_pre_init(pScrn, pNv->dev->fd, pScrn->bitsPerPixel >> 3); if (ret == FALSE) NVPreInitFail("Kernel modesetting failed to initialize\n"); |