On Wed, Oct 09, 2024 at 04:50:22PM GMT, Jun Nie wrote:
> Blend pipes by set of mixer pair config. The first 2 pipes are for left
> half screen with the first set of mixer pair config. And the later 2 pipes
> are for right in quad pipe case.
>
> Signed-off-by: Jun Nie <jun....@linaro.org>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 38
> ++++++++++++++++++-----------
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 1 +
> 2 files changed, 25 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> index 43d9817cd858f..66f745399a602 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -442,7 +442,7 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc
> *crtc,
> const struct msm_format *format;
> struct dpu_hw_ctl *ctl = mixer->lm_ctl;
>
> - uint32_t lm_idx, i;
> + uint32_t lm_idx, lm_pair, i, pipe_idx;
> bool bg_alpha_enable = false;
> DECLARE_BITMAP(fetch_active, SSPP_MAX);
>
> @@ -463,15 +463,20 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc
> *crtc,
> if (pstate->stage == DPU_STAGE_BASE && format->alpha_enable)
> bg_alpha_enable = true;
>
> - for (i = 0; i < PIPES_PER_LM_PAIR; i++) {
> - if (!pstate->pipe[i].sspp)
> - continue;
> - set_bit(pstate->pipe[i].sspp->idx, fetch_active);
> - _dpu_crtc_blend_setup_pipe(crtc, plane,
> - mixer, cstate->num_mixers,
> - pstate->stage,
> - format, fb ? fb->modifier :
> 0,
> - &pstate->pipe[i], i,
> stage_cfg);
> + /* loop pipe per mixer pair */
> + for (lm_pair = 0; lm_pair < PIPES_PER_PLANE / 2; lm_pair++) {
> + for (i = 0; i < PIPES_PER_LM_PAIR; i++) {
> + pipe_idx = i + lm_pair * PIPES_PER_LM_PAIR;
> + if (!pstate->pipe[pipe_idx].sspp)
> + continue;
> + set_bit(pstate->pipe[pipe_idx].sspp->idx,
> fetch_active);
> + _dpu_crtc_blend_setup_pipe(crtc, plane,
> + mixer,
> cstate->num_mixers,
> + pstate->stage,
> + format, fb ?
> fb->modifier : 0,
> +
> &pstate->pipe[pipe_idx], i,
> + &stage_cfg[lm_pair]);
> + }
> }
>
> /* blend config update */
> @@ -503,7 +508,7 @@ static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
> struct dpu_crtc_mixer *mixer = cstate->mixers;
> struct dpu_hw_ctl *ctl;
> struct dpu_hw_mixer *lm;
> - struct dpu_hw_stage_cfg stage_cfg;
> + struct dpu_hw_stage_cfg stage_cfg[LM_PAIRS_PER_PLANE];
After seeing this code, can we define STAGES_PER_PLANE (and
also keep PLANES_PER_STAGE defined to 2)?
> int i;
>
> DRM_DEBUG_ATOMIC("%s\n", dpu_crtc->name);
> @@ -516,9 +521,9 @@ static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
> }
>
> /* initialize stage cfg */
> - memset(&stage_cfg, 0, sizeof(struct dpu_hw_stage_cfg));
> + memset(&stage_cfg, 0, sizeof(stage_cfg));
>
> - _dpu_crtc_blend_setup_mixer(crtc, dpu_crtc, mixer, &stage_cfg);
> + _dpu_crtc_blend_setup_mixer(crtc, dpu_crtc, mixer, &stage_cfg[0]);
>
> for (i = 0; i < cstate->num_mixers; i++) {
> ctl = mixer[i].lm_ctl;
> @@ -535,8 +540,13 @@ static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
> mixer[i].mixer_op_mode,
> ctl->idx - CTL_0);
>
> + /*
> + * call dpu_hw_ctl_setup_blendstage() to blend layers per stage
> cfg.
> + * There is 4 mixers at most. The first 2 are for the left
> half, and
> + * the later 2 are for the right half.
> + */
> ctl->ops.setup_blendstage(ctl, mixer[i].hw_lm->idx,
> - &stage_cfg);
> + &stage_cfg[i / 2]);
> }
> }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
> index 3277debe11689..d8f5cffa60ea6 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
> @@ -34,6 +34,7 @@
>
> #define PIPES_PER_PLANE 2
> #define PIPES_PER_LM_PAIR 2
> +#define LM_PAIRS_PER_PLANE 2
> #ifndef DPU_MAX_DE_CURVES
> #define DPU_MAX_DE_CURVES 3
> #endif
>
> --
> 2.34.1
>
--
With best wishes
Dmitry
