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.nie@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];
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
--
2.34.1On 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.nie@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
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月10日周四 21:15写道：
>
> 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.nie@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)?
>
Could you elaborate it? Stages describe how many layers to be blended.
Plane is a DRM concept that describe a buffer to be display in specific
display driver. Plane is already mapped to SSPP/multi-rect in DPU driver
in blending stage level. So I am confused here.
- Jun
On Fri, 11 Oct 2024 at 09:40, Jun Nie <jun.nie@linaro.org> wrote:
>
> Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月10日周四 21:15写道：
> >
> > 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.nie@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)?
> >
> Could you elaborate it? Stages describe how many layers to be blended.
> Plane is a DRM concept that describe a buffer to be display in specific
> display driver. Plane is already mapped to SSPP/multi-rect in DPU driver
> in blending stage level. So I am confused here.
We have dpu_hw_stage_cfg, you are adding a second instance of it. So
we now have two stages per plane.
>
> - Jun
--
With best wishes
Dmitry
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月11日周五 15:03写道：
>
> On Fri, 11 Oct 2024 at 09:40, Jun Nie <jun.nie@linaro.org> wrote:
> >
> > Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月10日周四 21:15写道：
> > >
> > > 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.nie@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)?
> > >
> > Could you elaborate it? Stages describe how many layers to be blended.
> > Plane is a DRM concept that describe a buffer to be display in specific
> > display driver. Plane is already mapped to SSPP/multi-rect in DPU driver
> > in blending stage level. So I am confused here.
>
> We have dpu_hw_stage_cfg, you are adding a second instance of it. So
> we now have two stages per plane.
So you suggest to replace LM_PAIRS_PER_PLANE with STAGES_PER_PLANE,
right? I assume a stage is coupled with a LM pair.
But for PLANES_PER_STAGE, I am still confused. A stage or a LM pair can
involve many SSPP layers. How it related to planes? Plane is a concepts from
higher level.
> --
> With best wishes
> Dmitry
On Fri, 11 Oct 2024 at 10:11, Jun Nie <jun.nie@linaro.org> wrote:
>
> Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月11日周五 15:03写道：
> >
> > On Fri, 11 Oct 2024 at 09:40, Jun Nie <jun.nie@linaro.org> wrote:
> > >
> > > Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月10日周四 21:15写道：
> > > >
> > > > 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.nie@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)?
> > > >
> > > Could you elaborate it? Stages describe how many layers to be blended.
> > > Plane is a DRM concept that describe a buffer to be display in specific
> > > display driver. Plane is already mapped to SSPP/multi-rect in DPU driver
> > > in blending stage level. So I am confused here.
> >
> > We have dpu_hw_stage_cfg, you are adding a second instance of it. So
> > we now have two stages per plane.
>
> So you suggest to replace LM_PAIRS_PER_PLANE with STAGES_PER_PLANE,
> right? I assume a stage is coupled with a LM pair.
>
> But for PLANES_PER_STAGE, I am still confused. A stage or a LM pair can
> involve many SSPP layers. How it related to planes? Plane is a concepts from
> higher level.
PIPES_PER_STAGE, excuse me.
--
With best wishes
Dmitry
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月11日周五 15:13写道：
>
> On Fri, 11 Oct 2024 at 10:11, Jun Nie <jun.nie@linaro.org> wrote:
> >
> > Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月11日周五 15:03写道：
> > >
> > > On Fri, 11 Oct 2024 at 09:40, Jun Nie <jun.nie@linaro.org> wrote:
> > > >
> > > > Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月10日周四 21:15写道：
> > > > >
> > > > > 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.nie@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)?
> > > > >
> > > > Could you elaborate it? Stages describe how many layers to be blended.
> > > > Plane is a DRM concept that describe a buffer to be display in specific
> > > > display driver. Plane is already mapped to SSPP/multi-rect in DPU driver
> > > > in blending stage level. So I am confused here.
> > >
> > > We have dpu_hw_stage_cfg, you are adding a second instance of it. So
> > > we now have two stages per plane.
> >
> > So you suggest to replace LM_PAIRS_PER_PLANE with STAGES_PER_PLANE,
> > right? I assume a stage is coupled with a LM pair.
> >
> > But for PLANES_PER_STAGE, I am still confused. A stage or a LM pair can
> > involve many SSPP layers. How it related to planes? Plane is a concepts from
> > higher level.
>
> PIPES_PER_STAGE, excuse me.
Do you mean to keep PIPES_PER_STAGE and do not introduce PIPES_PER_LM_PAIR,
or use both? Looks like they are equal in hardware nature. A stage
structure serves
a mixer pair with 2 pipes. We can use PIPES_PER_LM_PAIR and add comment to
indicate it, thus avoid defining too many macro.
>
> --
> With best wishes
> Dmitry
On Tue, 15 Oct 2024 at 11:27, Jun Nie <jun.nie@linaro.org> wrote:
>
> Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月11日周五 15:13写道：
> >
> > On Fri, 11 Oct 2024 at 10:11, Jun Nie <jun.nie@linaro.org> wrote:
> > >
> > > Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月11日周五 15:03写道：
> > > >
> > > > On Fri, 11 Oct 2024 at 09:40, Jun Nie <jun.nie@linaro.org> wrote:
> > > > >
> > > > > Dmitry Baryshkov <dmitry.baryshkov@linaro.org> 于2024年10月10日周四 21:15写道：
> > > > > >
> > > > > > 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.nie@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)?
> > > > > >
> > > > > Could you elaborate it? Stages describe how many layers to be blended.
> > > > > Plane is a DRM concept that describe a buffer to be display in specific
> > > > > display driver. Plane is already mapped to SSPP/multi-rect in DPU driver
> > > > > in blending stage level. So I am confused here.
> > > >
> > > > We have dpu_hw_stage_cfg, you are adding a second instance of it. So
> > > > we now have two stages per plane.
> > >
> > > So you suggest to replace LM_PAIRS_PER_PLANE with STAGES_PER_PLANE,
> > > right? I assume a stage is coupled with a LM pair.
> > >
> > > But for PLANES_PER_STAGE, I am still confused. A stage or a LM pair can
> > > involve many SSPP layers. How it related to planes? Plane is a concepts from
> > > higher level.
> >
> > PIPES_PER_STAGE, excuse me.
>
> Do you mean to keep PIPES_PER_STAGE and do not introduce PIPES_PER_LM_PAIR,
> or use both? Looks like they are equal in hardware nature. A stage
> structure serves
> a mixer pair with 2 pipes. We can use PIPES_PER_LM_PAIR and add comment to
> indicate it, thus avoid defining too many macro.
Yes, don't introduce PIPES_PER_LM_PAIR and just add STAGES_PER_PLANE.
>
> >
> > --
> > With best wishes
> > Dmitry
--
With best wishes
Dmitry
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