From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
We want to calculate the vblank_start for vblank evasion
differently for vrr. To make that nicer lets first extract
the current non-vrr case to a helper.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_sprite.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index cf3589fd0ddb..ced6af7cdc84 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -62,6 +62,16 @@ int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
1000 * adjusted_mode->crtc_htotal);
}
+static int intel_mode_vblank_start(const struct drm_display_mode *mode)
+{
+ int vblank_start = mode->crtc_vblank_start;
+
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+ vblank_start = DIV_ROUND_UP(vblank_start, 2);
+
+ return vblank_start;
+}
+
/**
* intel_pipe_update_start() - start update of a set of display registers
* @new_crtc_state: the new crtc state
@@ -90,9 +100,7 @@ void intel_pipe_update_start(const struct intel_crtc_state *new_crtc_state)
if (new_crtc_state->uapi.async_flip)
return;
- vblank_start = adjusted_mode->crtc_vblank_start;
- if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
- vblank_start = DIV_ROUND_UP(vblank_start, 2);
+ vblank_start = intel_mode_vblank_start(adjusted_mode);
/* FIXME needs to be calibrated sensibly */
min = vblank_start - intel_usecs_to_scanlines(adjusted_mode,
--
2.19.1
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