From: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
We skip src trunction/adjustments for
NV12 case and handle the sizes directly.
Without this, pipe fifo underruns are seen on APL/KBL.
v2: For NV12, making the src coordinates multiplier of 4
v3: Moving all the src coords handling code for NV12
to skl_check_nv12_surface
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Signed-off-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 39 ++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_sprite.c | 15 ++++++++++----
2 files changed, 50 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 925402e..b8dbaca 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3118,6 +3118,42 @@ static int skl_check_main_surface(const struct intel_crtc_state *crtc_state,
return 0;
}
+static int
+skl_check_nv12_surface(const struct intel_crtc_state *crtc_state,
+ struct intel_plane_state *plane_state)
+{
+ int crtc_x2 = plane_state->base.crtc_x + plane_state->base.crtc_w;
+ int crtc_y2 = plane_state->base.crtc_y + plane_state->base.crtc_h;
+
+ if (((plane_state->base.src_x >> 16) % 4) != 0 ||
+ ((plane_state->base.src_y >> 16) % 4) != 0 ||
+ ((plane_state->base.src_w >> 16) % 4) != 0 ||
+ ((plane_state->base.src_h >> 16) % 4) != 0) {
+ DRM_DEBUG_KMS("src coords must be multiple of 4 for NV12\n");
+ return -EINVAL;
+ }
+
+ /* Clipping would cause a 1-3 pixel gap at the edge of the screen? */
+ if ((crtc_x2 > crtc_state->pipe_src_w && crtc_state->pipe_src_w % 4) ||
+ (crtc_y2 > crtc_state->pipe_src_h && crtc_state->pipe_src_h % 4)) {
+ DRM_DEBUG_KMS("It's not possible to clip %u,%u to %u,%u\n",
+ crtc_x2, crtc_y2,
+ crtc_state->pipe_src_w, crtc_state->pipe_src_h);
+ return -EINVAL;
+ }
+
+ plane_state->base.src.x1 =
+ DIV_ROUND_CLOSEST(plane_state->base.src.x1, 1 << 18) << 18;
+ plane_state->base.src.x2 =
+ DIV_ROUND_CLOSEST(plane_state->base.src.x2, 1 << 18) << 18;
+ plane_state->base.src.y1 =
+ DIV_ROUND_CLOSEST(plane_state->base.src.y1, 1 << 18) << 18;
+ plane_state->base.src.y2 =
+ DIV_ROUND_CLOSEST(plane_state->base.src.y2, 1 << 18) << 18;
+
+ return 0;
+}
+
static int skl_check_nv12_aux_surface(struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
@@ -3201,6 +3237,9 @@ int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
* the main surface setup depends on it.
*/
if (fb->format->format == DRM_FORMAT_NV12) {
+ ret = skl_check_nv12_surface(crtc_state, plane_state);
+ if (ret)
+ return ret;
ret = skl_check_nv12_aux_surface(plane_state);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 8b7947d..f9985fb 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1035,10 +1035,17 @@ intel_check_sprite_plane(struct intel_plane *plane,
return vscale;
}
- /* Make the source viewport size an exact multiple of the scaling factors. */
- drm_rect_adjust_size(src,
- drm_rect_width(dst) * hscale - drm_rect_width(src),
- drm_rect_height(dst) * vscale - drm_rect_height(src));
+ if (fb->format->format != DRM_FORMAT_NV12) {
+ /*
+ * Make the source viewport size
+ * an exact multiple of the scaling factors
+ */
+ drm_rect_adjust_size(src,
+ (drm_rect_width(dst) * hscale -
+ drm_rect_width(src)),
+ (drm_rect_height(dst) * vscale -
+ drm_rect_height(src)));
+ }
drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16,
state->base.rotation);
--
2.7.4
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