On Wed, 25 Jul 2018 17:32:08 +0200
Boris Brezillon <boris.brezil...@bootlin.com> wrote:
> From: Eric Anholt <e...@anholt.net>
>
> The offset adjustment depends on the framebuffer modified, so let's
^ modifier
> just move this operation in the DRM_FORMAT_MOD_LINEAR case inside
> vc4_plane_mode_set().
>
> This we'll be able to fix offset calculation for
^ Thanks to this, we'll ...
> DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED and DRM_FORMAT_MOD_BROADCOM_SANDXXX.
>
> Signed-off-by: Eric Anholt <e...@anholt.net>
> Signed-off-by: Boris Brezillon <boris.brezil...@bootlin.com>
> ---
> drivers/gpu/drm/vc4/vc4_plane.c | 23 +++++++++++++++--------
> 1 file changed, 15 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
> index 39e1fa3a8466..2b8ba1c412be 100644
> --- a/drivers/gpu/drm/vc4/vc4_plane.c
> +++ b/drivers/gpu/drm/vc4/vc4_plane.c
> @@ -354,14 +354,6 @@ static int vc4_plane_setup_clipping_and_scaling(struct
> drm_plane_state *state)
> vc4_state->y_scaling[1] = VC4_SCALING_NONE;
> }
>
> - /* Adjust the base pointer to the first pixel to be scanned out. */
> - for (i = 0; i < num_planes; i++) {
> - vc4_state->offsets[i] += (src_y / (i ? v_subsample : 1)) *
> - fb->pitches[i];
> - vc4_state->offsets[i] += (src_x / (i ? h_subsample : 1)) *
> - fb->format->cpp[i];
> - }
> -
> return 0;
> }
>
> @@ -476,6 +468,7 @@ static int vc4_plane_mode_set(struct drm_plane *plane,
> u64 base_format_mod = fourcc_mod_broadcom_mod(fb->modifier);
> int num_planes = drm_format_num_planes(format->drm);
> u32 src_x, src_y, crtc_h, crtc_w, src_h, src_w;
> + u32 h_subsample, v_subsample;
> bool mix_plane_alpha;
> bool covers_screen;
> u32 scl0, scl1, pitch0;
> @@ -527,11 +520,25 @@ static int vc4_plane_mode_set(struct drm_plane *plane,
> src_y = state->src.y1 >> 16;
> src_w = (state->src.x2 - state->src.x1) >> 16;
> src_h = (state->src.y2 - state->src.y1) >> 16;
> + h_subsample = drm_format_horz_chroma_subsampling(format->drm);
> + v_subsample = drm_format_vert_chroma_subsampling(format->drm);
>
> switch (base_format_mod) {
> case DRM_FORMAT_MOD_LINEAR:
> tiling = SCALER_CTL0_TILING_LINEAR;
> pitch0 = VC4_SET_FIELD(fb->pitches[0], SCALER_SRC_PITCH);
> +
> + /* Adjust the base pointer to the first pixel to be scanned
> + * out.
> + */
> + for (i = 0; i < num_planes; i++) {
> + vc4_state->offsets[i] += src_y /
> + (i ? v_subsample : 1) *
> + fb->pitches[i];
> + vc4_state->offsets[i] += src_x /
> + (i ? h_subsample : 1) *
> + fb->format->cpp[i];
> + }
> break;
>
> case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: {
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