[PATCH v2 13/22] drm/msm/dpu: drop src_split and multirect check from dpu_crtc_atomic_check
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Mon Jul 5 01:21:06 UTC 2021
Neither source split nor multirect are properly supported at this
moment. Both of these checks depend on zpos being equal for several
planes (which is a clear userspace bug). Drop these checks to simplify
dpu_crtc_atomic_check(). The actual support for either of these features
is not removed from the backend code (sspp, ctl, etc).
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 128 +----------------------
1 file changed, 4 insertions(+), 124 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 6fe0af9ffc23..f311cdbfe7d2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -895,12 +895,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_plane *plane;
struct drm_display_mode *mode;
- int cnt = 0, rc = 0, mixer_width = 0, i, z_pos;
+ int cnt = 0, rc = 0, i;
- struct dpu_multirect_plane_states multirect_plane[DPU_STAGE_MAX * 2];
- int multirect_count = 0;
- const struct drm_plane_state *pipe_staged[SSPP_MAX];
- int left_zpos_cnt = 0, right_zpos_cnt = 0;
struct drm_rect crtc_rect = { 0 };
pstates = kzalloc(sizeof(*pstates) * DPU_STAGE_MAX * 4, GFP_KERNEL);
@@ -920,13 +916,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
if (crtc_state->active_changed)
crtc_state->mode_changed = true;
- memset(pipe_staged, 0, sizeof(pipe_staged));
-
- if (cstate->num_mixers) {
- mixer_width = mode->hdisplay / cstate->num_mixers;
-
+ if (cstate->num_mixers)
_dpu_crtc_setup_lm_bounds(crtc, crtc_state);
- }
crtc_rect.x2 = mode->hdisplay;
crtc_rect.y2 = mode->vdisplay;
@@ -947,18 +938,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
pstates[cnt].dpu_pstate = to_dpu_plane_state(pstate);
pstates[cnt].drm_pstate = pstate;
pstates[cnt].stage = pstate->normalized_zpos;
- pstates[cnt].pipe_id = dpu_plane_pipe(plane);
- if (pipe_staged[pstates[cnt].pipe_id]) {
- multirect_plane[multirect_count].r0 =
- pipe_staged[pstates[cnt].pipe_id];
- multirect_plane[multirect_count].r1 = pstate;
- multirect_count++;
-
- pipe_staged[pstates[cnt].pipe_id] = NULL;
- } else {
- pipe_staged[pstates[cnt].pipe_id] = pstate;
- }
+ dpu_plane_clear_multirect(pstate);
cnt++;
@@ -973,19 +954,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
}
}
- for (i = 1; i < SSPP_MAX; i++) {
- if (pipe_staged[i])
- dpu_plane_clear_multirect(pipe_staged[i]);
- }
-
- z_pos = -1;
for (i = 0; i < cnt; i++) {
- /* reset counts at every new blend stage */
- if (pstates[i].stage != z_pos) {
- left_zpos_cnt = 0;
- right_zpos_cnt = 0;
- z_pos = pstates[i].stage;
- }
+ int z_pos = pstates[i].stage;
/* verify z_pos setting before using it */
if (z_pos >= DPU_STAGE_MAX - DPU_STAGE_0) {
@@ -993,40 +963,12 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
DPU_STAGE_MAX - DPU_STAGE_0);
rc = -EINVAL;
goto end;
- } else if (pstates[i].drm_pstate->crtc_x < mixer_width) {
- if (left_zpos_cnt == 2) {
- DPU_ERROR("> 2 planes @ stage %d on left\n",
- z_pos);
- rc = -EINVAL;
- goto end;
- }
- left_zpos_cnt++;
-
- } else {
- if (right_zpos_cnt == 2) {
- DPU_ERROR("> 2 planes @ stage %d on right\n",
- z_pos);
- rc = -EINVAL;
- goto end;
- }
- right_zpos_cnt++;
}
pstates[i].dpu_pstate->stage = z_pos + DPU_STAGE_0;
DRM_DEBUG_ATOMIC("%s: zpos %d\n", dpu_crtc->name, z_pos);
}
- for (i = 0; i < multirect_count; i++) {
- if (dpu_plane_validate_multirect_v2(&multirect_plane[i])) {
- DPU_ERROR(
- "multirect validation failed for planes (%d - %d)\n",
- multirect_plane[i].r0->plane->base.id,
- multirect_plane[i].r1->plane->base.id);
- rc = -EINVAL;
- goto end;
- }
- }
-
atomic_inc(&_dpu_crtc_get_kms(crtc)->bandwidth_ref);
rc = dpu_core_perf_crtc_check(crtc, crtc_state);
@@ -1036,68 +978,6 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
goto end;
}
- /* validate source split:
- * use pstates sorted by stage to check planes on same stage
- * we assume that all pipes are in source split so its valid to compare
- * without taking into account left/right mixer placement
- */
- for (i = 1; i < cnt; i++) {
- struct plane_state *prv_pstate, *cur_pstate;
- struct drm_rect left_rect, right_rect;
- int32_t left_pid, right_pid;
- int32_t stage;
-
- prv_pstate = &pstates[i - 1];
- cur_pstate = &pstates[i];
- if (prv_pstate->stage != cur_pstate->stage)
- continue;
-
- stage = cur_pstate->stage;
-
- left_pid = prv_pstate->dpu_pstate->base.plane->base.id;
- left_rect = drm_plane_state_dest(prv_pstate->drm_pstate);
-
- right_pid = cur_pstate->dpu_pstate->base.plane->base.id;
- right_rect = drm_plane_state_dest(cur_pstate->drm_pstate);
-
- if (right_rect.x1 < left_rect.x1) {
- swap(left_pid, right_pid);
- swap(left_rect, right_rect);
- }
-
- /**
- * - planes are enumerated in pipe-priority order such that
- * planes with lower drm_id must be left-most in a shared
- * blend-stage when using source split.
- * - planes in source split must be contiguous in width
- * - planes in source split must have same dest yoff and height
- */
- if (right_pid < left_pid) {
- DPU_ERROR(
- "invalid src split cfg. priority mismatch. stage: %d left: %d right: %d\n",
- stage, left_pid, right_pid);
- rc = -EINVAL;
- goto end;
- } else if (right_rect.x1 != drm_rect_width(&left_rect)) {
- DPU_ERROR("non-contiguous coordinates for src split. "
- "stage: %d left: " DRM_RECT_FMT " right: "
- DRM_RECT_FMT "\n", stage,
- DRM_RECT_ARG(&left_rect),
- DRM_RECT_ARG(&right_rect));
- rc = -EINVAL;
- goto end;
- } else if (left_rect.y1 != right_rect.y1 ||
- drm_rect_height(&left_rect) != drm_rect_height(&right_rect)) {
- DPU_ERROR("source split at stage: %d. invalid "
- "yoff/height: left: " DRM_RECT_FMT " right: "
- DRM_RECT_FMT "\n", stage,
- DRM_RECT_ARG(&left_rect),
- DRM_RECT_ARG(&right_rect));
- rc = -EINVAL;
- goto end;
- }
- }
-
end:
kfree(pstates);
return rc;
--
2.30.2
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