drm/msm: dpu: Allow planes to extend past active display

The atomic_check is a bit too aggressive with respect to planes which
leave the active area. This caused a bunch of log spew when the cursor
got to the edge of the screen and stopped it from going all the way.

This patch removes the conservative bounds checks from atomic and clips
the dst rect such that we properly display planes which go off the
screen.

Changes in v2:
- Apply the clip to src as well (taking into account scaling)
Changes in v3:
- Use drm_atomic_helper_check_plane_state() to clip src/dst

Cc: Sravanthi Kollukuduru <skolluku@codeaurora.org>
Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 07c2d15..f0a5e77 100644 (file)
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1551,8 +1551,7 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
                cnt++;
 
                dst = drm_plane_state_dest(pstate);
-               if (!drm_rect_intersect(&clip, &dst) ||
-                   !drm_rect_equals(&clip, &dst)) {
+               if (!drm_rect_intersect(&clip, &dst)) {
                        DPU_ERROR("invalid vertical/horizontal destination\n");
                        DPU_ERROR("display: " DRM_RECT_FMT " plane: "
                                  DRM_RECT_FMT "\n", DRM_RECT_ARG(&crtc_rect),

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index c2cbd90..eab05c7 100644 (file)
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -1256,7 +1256,7 @@ static int dpu_plane_sspp_atomic_update(struct drm_plane *plane,
        const struct dpu_format *fmt;
        struct drm_crtc *crtc;
        struct drm_framebuffer *fb;
-       struct drm_rect src, dst;
+       int ret, min_scale;
 
        if (!plane) {
                DPU_ERROR("invalid plane\n");
@@ -1295,21 +1295,29 @@ static int dpu_plane_sspp_atomic_update(struct drm_plane *plane,
        pdpu->is_rt_pipe = (dpu_crtc_get_client_type(crtc) != NRT_CLIENT);
        _dpu_plane_set_qos_ctrl(plane, false, DPU_PLANE_QOS_PANIC_CTRL);
 
-       src.x1 = state->src_x >> 16;
-       src.y1 = state->src_y >> 16;
-       src.x2 = src.x1 + (state->src_w >> 16);
-       src.y2 = src.y1 + (state->src_h >> 16);
+       min_scale = FRAC_16_16(1, pdpu->pipe_sblk->maxdwnscale);
+       ret = drm_atomic_helper_check_plane_state(state, crtc->state, min_scale,
+                                         pdpu->pipe_sblk->maxupscale << 16,
+                                         true, false);
+       if (ret) {
+               DPU_ERROR_PLANE(pdpu, "Check plane state failed (%d)\n", ret);
+               return ret;
+       }
 
-       dst = drm_plane_state_dest(state);
+       DPU_DEBUG_PLANE(pdpu, "FB[%u] " DRM_RECT_FP_FMT "->crtc%u " DRM_RECT_FMT
+                       ", %4.4s ubwc %d\n", fb->base.id, DRM_RECT_FP_ARG(&state->src),
+                       crtc->base.id, DRM_RECT_ARG(&state->dst),
+                       (char *)&fmt->base.pixel_format, DPU_FORMAT_IS_UBWC(fmt));
 
-       DPU_DEBUG_PLANE(pdpu, "FB[%u] " DRM_RECT_FMT "->crtc%u " DRM_RECT_FMT
-                       ", %4.4s ubwc %d\n", fb->base.id, DRM_RECT_ARG(&src),
-                       crtc->base.id, DRM_RECT_ARG(&dst),
-                       (char *)&fmt->base.pixel_format,
-                       DPU_FORMAT_IS_UBWC(fmt));
+       pdpu->pipe_cfg.src_rect = state->src;
+
+       /* state->src is 16.16, src_rect is not */
+       pdpu->pipe_cfg.src_rect.x1 >>= 16;
+       pdpu->pipe_cfg.src_rect.x2 >>= 16;
+       pdpu->pipe_cfg.src_rect.y1 >>= 16;
+       pdpu->pipe_cfg.src_rect.y2 >>= 16;
 
-       pdpu->pipe_cfg.src_rect = src;
-       pdpu->pipe_cfg.dst_rect = dst;
+       pdpu->pipe_cfg.dst_rect = state->dst;
 
        _dpu_plane_setup_scaler(pdpu, pstate, fmt, false);
 

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index 7d306c5..273cbbe 100644 (file)
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -259,7 +259,6 @@ static void mdp5_plane_cleanup_fb(struct drm_plane *plane,
        msm_framebuffer_cleanup(fb, kms->aspace);
 }
 
-#define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
 static int mdp5_plane_atomic_check_with_state(struct drm_crtc_state *crtc_state,
                                              struct drm_plane_state *state)
 {

diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 8e510d5..9d11f32 100644 (file)
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -62,6 +62,8 @@ struct msm_gem_vma;
 #define MAX_BRIDGES    8
 #define MAX_CONNECTORS 8
 
+#define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
+
 struct msm_file_private {
        rwlock_t queuelock;
        struct list_head submitqueues;