From: Thierry Reding <tred...@nvidia.com>
When the CRTC is enabled, make sure the VBLANK machinery is enabled.
Failure to do so will cause drm_vblank_get() to not enable the VBLANK on
the CRTC and VBLANK-synchronized page-flips won't work.
While at it, get rid of the legacy drm_vblank_pre_modeset() and
drm_vblank_post_modeset() calls that are replaced by drm_vblank_on()
and drm_vblank_off().
Reported-by: Alexandre Courbot <acourbot at nvidia.com>
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
drivers/gpu/drm/tegra/dc.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 4a015232e2e8..4da366a4d78a 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -739,7 +739,6 @@ static const struct drm_crtc_funcs tegra_crtc_funcs = {
static void tegra_crtc_disable(struct drm_crtc *crtc)
{
- struct tegra_dc *dc = to_tegra_dc(crtc);
struct drm_device *drm = crtc->dev;
struct drm_plane *plane;
@@ -755,7 +754,7 @@ static void tegra_crtc_disable(struct drm_crtc *crtc)
}
}
- drm_vblank_off(drm, dc->pipe);
+ drm_crtc_vblank_off(crtc);
}
static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc,
@@ -844,8 +843,6 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
u32 value;
int err;
- drm_vblank_pre_modeset(crtc->dev, dc->pipe);
-
err = tegra_crtc_setup_clk(crtc, mode);
if (err) {
dev_err(dc->dev, "failed to setup clock for CRTC: %d\n", err);
@@ -946,7 +943,7 @@ static void tegra_crtc_commit(struct drm_crtc *crtc)
value = GENERAL_ACT_REQ | WIN_A_ACT_REQ;
tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
- drm_vblank_post_modeset(crtc->dev, dc->pipe);
+ drm_crtc_vblank_on(crtc);
}
static void tegra_crtc_load_lut(struct drm_crtc *crtc)
--
2.1.2
