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Message-Id: <20250118-sm8650-v6-13-hmd-deckard-mdss-quad-upstream-33-v5-12-9701a16340da@linaro.org>
Date: Sat, 18 Jan 2025 00:00:55 +0800
From: Jun Nie <jun.nie@...aro.org>
To: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Jun Nie <jun.nie@...aro.org>
Subject: [PATCH v5 12/15] drm/msm/dpu: blend pipes per mixer pairs config
Currently, only 2 pipes are used at most for a plane. A stage structure
describes the configuration for a mixer pair. So only one stage is needed
for current usage cases. The quad-pipe case will be added in future and 2
stages are used in the case. So extend the stage to an array with array size
STAGES_PER_PLANE and blend pipes per mixer pair with configuration in the
stage structure.
Signed-off-by: Jun Nie <jun.nie@...aro.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 45 +++++++++++++++++++----------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 1 +
2 files changed, 30 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 81474823e6799..50acaf25a3ffc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -401,7 +401,7 @@ static void _dpu_crtc_blend_setup_pipe(struct drm_crtc *crtc,
struct dpu_hw_stage_cfg *stage_cfg
)
{
- uint32_t lm_idx;
+ uint32_t lm_idx, lm_in_pair;
enum dpu_sspp sspp_idx;
struct drm_plane_state *state;
@@ -426,7 +426,8 @@ static void _dpu_crtc_blend_setup_pipe(struct drm_crtc *crtc,
stage_cfg->multirect_index[stage][stage_idx] = pipe->multirect_index;
/* blend config update */
- for (lm_idx = 0; lm_idx < num_mixers; lm_idx++)
+ lm_in_pair = num_mixers > 1 ? 2 : 1;
+ for (lm_idx = 0; lm_idx < lm_in_pair; lm_idx++)
mixer[lm_idx].lm_ctl->ops.update_pending_flush_sspp(mixer[lm_idx].lm_ctl, sspp_idx);
}
@@ -442,7 +443,7 @@ 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, stage, i, pipe_idx, head_pipe_in_stage;
bool bg_alpha_enable = false;
DECLARE_BITMAP(fetch_active, SSPP_MAX);
@@ -463,15 +464,22 @@ 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_PLANE; 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 with config in stage structure */
+ for (stage = 0; stage < STAGES_PER_PLANE; stage++) {
+ head_pipe_in_stage = stage * PIPES_PER_STAGE;
+ for (i = 0; i < PIPES_PER_STAGE; i++) {
+ pipe_idx = i + head_pipe_in_stage;
+ 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[head_pipe_in_stage],
+ cstate->num_mixers - (stage * PIPES_PER_STAGE),
+ pstate->stage,
+ format, fb ? fb->modifier : 0,
+ &pstate->pipe[pipe_idx], i,
+ &stage_cfg[stage]);
+ }
}
/* blend config update */
@@ -503,7 +511,7 @@ 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[STAGES_PER_PLANE];
int i;
DRM_DEBUG_ATOMIC("%s\n", dpu_crtc->name);
@@ -516,9 +524,9 @@ 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);
for (i = 0; i < cstate->num_mixers; i++) {
ctl = mixer[i].lm_ctl;
@@ -535,8 +543,13 @@ 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 are 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 / PIPES_PER_STAGE]);
}
}
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 5f010d36672cc..64e220987be56 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 DPU_MAX_PLANES 4
#endif
+#define STAGES_PER_PLANE 2
#define PIPES_PER_PLANE 2
#define PIPES_PER_STAGE 2
#ifndef DPU_MAX_DE_CURVES
--
2.34.1
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