On Tue, Jan 13, 2015 at 06:03:39PM +0530, Sonika Jindal wrote:
> Taking rotation into account while checking the plane
> and adjusting the sizes accordingly.
>
> Signed-off-by: Sonika Jindal <sonika.jindal@xxxxxxxxx>
> ---
> drivers/gpu/drm/drm_plane_helper.c | 79 ++++++++++++++++++++++++++++++++++--
> include/drm/drm_plane_helper.h | 3 +-
> 2 files changed, 77 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
> index f24c4cf..4badd69 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -138,9 +138,13 @@ int drm_plane_helper_check_update(struct drm_plane *plane,
> int max_scale,
> bool can_position,
> bool can_update_disabled,
> - bool *visible)
> + bool *visible,
> + unsigned int rotation)
> {
> int hscale, vscale;
> + int crtc_x, crtc_y;
> + unsigned int crtc_w, crtc_h;
> + uint32_t src_x, src_y, src_w, src_h;
>
> if (!fb) {
> *visible = false;
> @@ -158,9 +162,13 @@ int drm_plane_helper_check_update(struct drm_plane *plane,
> return -EINVAL;
> }
>
> + if (fb)
> + drm_rect_rotate(src, fb->width << 16, fb->height << 16,
> + rotation);
> +
> /* Check scaling */
> - hscale = drm_rect_calc_hscale(src, dest, min_scale, max_scale);
> - vscale = drm_rect_calc_vscale(src, dest, min_scale, max_scale);
> + hscale = drm_rect_calc_hscale_relaxed(src, dest, min_scale, max_scale);
> + vscale = drm_rect_calc_vscale_relaxed(src, dest, min_scale, max_scale);
This is an unrelated change. Relaxed scaling allows the the src/dest
rectangles to be reduced in size in order to keep the scaling ration
within the min/max range. I suppose we should switch to using it to
make the behaviour uniform across drivers, but definitely should be
done with a separate patch.
> if (hscale < 0 || vscale < 0) {
> DRM_DEBUG_KMS("Invalid scaling of plane\n");
> return -ERANGE;
> @@ -182,6 +190,68 @@ int drm_plane_helper_check_update(struct drm_plane *plane,
> return -EINVAL;
> }
>
> + crtc_x = dest->x1;
> + crtc_y = dest->y1;
> + crtc_w = drm_rect_width(dest);
> + crtc_h = drm_rect_height(dest);
You don't adjust these in any way so they are not needed.
> +
> + if (*visible) {
> + /* check again in case clipping clamped the results */
> + hscale = drm_rect_calc_hscale(src, dest,
> + DRM_PLANE_HELPER_NO_SCALING,
> + DRM_PLANE_HELPER_NO_SCALING);
First you allowed scaling and now you don't. What's up with that?
> + if (hscale < 0) {
> + DRM_DEBUG_KMS("Horizontal scaling factor out of limits\n");
> + drm_rect_debug_print(src, true);
> + drm_rect_debug_print(dest, false);
> +
> + return hscale;
> + }
> +
> + vscale = drm_rect_calc_vscale(src, dest,
> + DRM_PLANE_HELPER_NO_SCALING,
> + DRM_PLANE_HELPER_NO_SCALING);
> + if (vscale < 0) {
> + DRM_DEBUG_KMS("Vertical scaling factor out of limits\n");
> + drm_rect_debug_print(src, true);
> + drm_rect_debug_print(dest, false);
> +
> + return vscale;
> + }
> +
> + /* Make the source viewport size an exact multiple of the scaling factors. */
> + drm_rect_adjust_size(src,
> + drm_rect_width(dest) * hscale - drm_rect_width(src),
> + drm_rect_height(dest) * vscale - drm_rect_height(src));
> +
> + drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16,
> + rotation);
> +
> + /*
> + * Hardware doesn't handle subpixel coordinates.
That's a purely hardware specific detail. It should not be part of the
helpers. And in any case the returned src coordinates must remain in
fixed point format.
> + * Adjust to (macro)pixel boundary, but be careful not to
> + * increase the source viewport size, because that could
> + * push the downscaling factor out of bounds.
> + */
> + src_x = src->x1 >> 16;
> + src_w = drm_rect_width(src) >> 16;
> + src_y = src->y1 >> 16;
> + src_h = drm_rect_height(src) >> 16;
> + }
> +
> + if (*visible) {
> + src->x1 = src_x;
> + src->x2 = src_x + src_w;
> + src->y1 = src_y;
> + src->y2 = src_y + src_h;
> + }
> +
> + dest->x1 = crtc_x;
> + dest->x2 = crtc_x + crtc_w;
> + dest->y1 = crtc_y;
> + dest->y2 = crtc_y + crtc_h;
> +
> +
> return 0;
> }
> EXPORT_SYMBOL(drm_plane_helper_check_update);
> @@ -258,7 +328,8 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
> &src, &dest, &clip,
> DRM_PLANE_HELPER_NO_SCALING,
> DRM_PLANE_HELPER_NO_SCALING,
> - false, false, &visible);
> + false, false, &visible,
> + DRM_ROTATE_0);
> if (ret)
> return ret;
>
> diff --git a/include/drm/drm_plane_helper.h b/include/drm/drm_plane_helper.h
> index a185392..ef9eb04 100644
> --- a/include/drm/drm_plane_helper.h
> +++ b/include/drm/drm_plane_helper.h
> @@ -84,7 +84,8 @@ extern int drm_plane_helper_check_update(struct drm_plane *plane,
> int max_scale,
> bool can_position,
> bool can_update_disabled,
> - bool *visible);
> + bool *visible,
> + unsigned int rotation);
> extern int drm_primary_helper_update(struct drm_plane *plane,
> struct drm_crtc *crtc,
> struct drm_framebuffer *fb,
> --
> 1.7.10.4
>
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel OTC
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