Currently, SSPPs are assigned to a maximum of two pipes. However,
quad-pipe usage scenarios require four pipes and involve configuring
two stages. In quad-pipe case, the first two pipes share a set of
mixer configurations and enable multi-rect mode when certain
conditions are met. The same applies to the subsequent two pipes.
Assign SSPPs to the pipes in each stage using a unified method and
to loop the stages accordingly.
Signed-off-by: Jun Nie <jun.nie@xxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 63 +++++++++++++++++++------------
1 file changed, 39 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index d67f2ad20b475..b87da2bd20861 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -1115,8 +1115,9 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
struct dpu_sw_pipe *r_pipe;
struct dpu_sw_pipe_cfg *pipe_cfg;
struct dpu_sw_pipe_cfg *r_pipe_cfg;
+ struct dpu_plane *pdpu = to_dpu_plane(plane);
const struct msm_format *fmt;
- int i;
+ int i, num_lm, stage_id, num_stages;
if (plane_state->crtc)
crtc_state = drm_atomic_get_new_crtc_state(state,
@@ -1124,11 +1125,6 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
pstate = to_dpu_plane_state(plane_state);
- pipe = &pstate->pipe[0];
- r_pipe = &pstate->pipe[1];
- pipe_cfg = &pstate->pipe_cfg[0];
- r_pipe_cfg = &pstate->pipe_cfg[1];
-
for (i = 0; i < PIPES_PER_PLANE; i++)
pstate->pipe[i].sspp = NULL;
@@ -1142,24 +1138,43 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
reqs.rot90 = drm_rotation_90_or_270(plane_state->rotation);
- pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
- if (!pipe->sspp)
- return -ENODEV;
-
- if (!dpu_plane_try_multirect_parallel(pipe, pipe_cfg, r_pipe, r_pipe_cfg,
- pipe->sspp,
- msm_framebuffer_format(plane_state->fb),
- dpu_kms->catalog->caps->max_linewidth)) {
- /* multirect is not possible, use two SSPP blocks */
- r_pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
- if (!r_pipe->sspp)
- return -ENODEV;
-
- pipe->multirect_index = DPU_SSPP_RECT_SOLO;
- pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
-
- r_pipe->multirect_index = DPU_SSPP_RECT_SOLO;
- r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+ num_lm = dpu_crtc_get_num_lm(crtc_state);
+ num_stages = (num_lm + 1) / 2;
+ for (stage_id = 0; stage_id < num_stages; stage_id++) {
+ for (i = stage_id * PIPES_PER_STAGE; i < (stage_id + 1) * PIPES_PER_STAGE; i++) {
+ pipe = &pstate->pipe[i];
+ pipe_cfg = &pstate->pipe_cfg[i];
+
+ if (drm_rect_width(&pipe_cfg->src_rect) == 0)
+ break;
+
+ pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
+ if (!pipe->sspp)
+ return -ENODEV;
+
+ r_pipe = &pstate->pipe[i + 1];
+ r_pipe_cfg = &pstate->pipe_cfg[i + 1];
+
+ /*
+ * If current pipe is the first pipe in pipe pair, check
+ * multi-rect opportunity for the 2nd pipe in the pair.
+ * SSPP multi-rect mode cross mixer pairs is not supported.
+ */
+ if ((i % PIPES_PER_STAGE == 0) &&
+ drm_rect_width(&r_pipe_cfg->src_rect) != 0 &&
+ dpu_plane_try_multirect_parallel(pipe, pipe_cfg, r_pipe, r_pipe_cfg,
+ pipe->sspp,
+ msm_framebuffer_format(plane_state->fb),
+ dpu_kms->catalog->caps->max_linewidth)) {
+ i++;
+ } else {
+ /* multirect is not possible, use two SSPP blocks */
+ pipe->multirect_index = DPU_SSPP_RECT_SOLO;
+ pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+ DPU_DEBUG_PLANE(pdpu, "allocating sspp_%d for pipe %d.\n",
+ pipe->sspp->idx - SSPP_NONE, i);
+ }
+ }
}
return dpu_plane_atomic_check_sspp(plane, state, crtc_state);
--
2.34.1
