On Thu, Jul 19, 2018 at 09:21:57PM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <[email protected]>
>
> The workaround was supposed to look at the plane destination
> coordinates. Currently it's looking at some mixture of src
> and dst coordinates that doesn't make sense. Fix it up.
>
> Signed-off-by: Ville Syrjälä <[email protected]>
Fixes: 394676f05bee ("drm/i915: Add WA for planes ending close to left screen
edge")
Reviewed-by: Imre Deak <[email protected]>
Not sure why I thought it's ok to use the source width. As I understand now
it wouldn't work with scaling on.
> ---
> drivers/gpu/drm/i915/intel_display.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index 87e4cfbfd096..8efff0c56920 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -2988,6 +2988,7 @@ static int skl_check_main_surface(const struct
> intel_crtc_state *crtc_state,
> int w = drm_rect_width(&plane_state->base.src) >> 16;
> int h = drm_rect_height(&plane_state->base.src) >> 16;
> int dst_x = plane_state->base.dst.x1;
> + int dst_w = drm_rect_width(&plane_state->base.dst);
> int pipe_src_w = crtc_state->pipe_src_w;
> int max_width = skl_max_plane_width(fb, 0, rotation);
> int max_height = 4096;
> @@ -3009,10 +3010,10 @@ static int skl_check_main_surface(const struct
> intel_crtc_state *crtc_state,
> * screen may cause FIFO underflow and display corruption.
> */
> if ((IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
> - (dst_x + w < 4 || dst_x > pipe_src_w - 4)) {
> + (dst_x + dst_w < 4 || dst_x > pipe_src_w - 4)) {
> DRM_DEBUG_KMS("requested plane X %s position %d invalid (valid
> range %d-%d)\n",
> - dst_x + w < 4 ? "end" : "start",
> - dst_x + w < 4 ? dst_x + w : dst_x,
> + dst_x + dst_w < 4 ? "end" : "start",
> + dst_x + dst_w < 4 ? dst_x + dst_w : dst_x,
> 4, pipe_src_w - 4);
> return -ERANGE;
> }
> --
> 2.16.4
>
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