Re: [RFC PATCH 2/7] drm/msm/dpu: Disable pingpong TE on DPU 5.0.0 and above

From: Marijn Suijten
Date: Mon Jan 02 2023 - 05:25:56 EST

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On 2023-01-01 06:28:23, Dmitry Baryshkov wrote:
> On 31/12/2022 23:50, Marijn Suijten wrote:
> > Since hardware revision 5.0.0 the TE configuration moved out of the
> > PINGPONG block into the INTF block. Writing these registers has no
> > effect, and is omitted downstream via the DPU/SDE_PINGPONG_TE feature
> > flag. This flag is only added to PINGPONG blocks used by hardware prior
> > to 5.0.0.
> >
> > The code that writes to these registers in the INTF block will follow in
> > subsequent patches.
> >
> > Signed-off-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
> > ---
> > .../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 5 +-
> > .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 53 +++++++++++--------
> > .../gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c | 18 ++++---
> > 3 files changed, 44 insertions(+), 32 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> > index ae28b2b93e69..7e5ba52197cd 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> > @@ -582,7 +582,7 @@ static bool dpu_encoder_phys_cmd_is_ongoing_pptx(
> > {
> > struct dpu_hw_pp_vsync_info info;
> >
> > - if (!phys_enc)
> > + if (!phys_enc || !phys_enc->hw_pp->ops.get_vsync_info)
> > return false;
> >
> > phys_enc->hw_pp->ops.get_vsync_info(phys_enc->hw_pp, &info);
> > @@ -607,6 +607,9 @@ static void dpu_encoder_phys_cmd_prepare_commit(
>
> This function works only with the hw_pp and if I'm not mistaken it
> becomes void for newer platforms. Please consider moving completely to
> the dpu_hw_pp.c Then we'd have a single optional callback instead of
> having a pile of them.

It also works for hw_intf, which I'm introducing in a later patch. This
change is just cleaning up the fact that these are the only callbacks
(on hw_pp->ops) that weren't considered optional yet.

Even though removing these writes should not have any effect, perhaps it
is more clear to insert this patch /after/ introducing INTF TE? Then
that patch will likely already include the change that makes this error
checking consistent for both variants, as it currently has:

/* If autorefresh is already disabled, we have nothing to do */
if (phys_enc->has_intf_te) {
if (!phys_enc->hw_intf || !phys_enc->hw_intf->ops.get_autorefresh ||
!phys_enc->hw_intf->ops.setup_autorefresh)
return;
if (!phys_enc->hw_intf->ops.get_autorefresh(phys_enc->hw_intf, NULL))
return;
} else {
if (!phys_enc->hw_pp || !phys_enc->hw_pp->ops.get_autorefresh ||
!phys_enc->hw_pp->ops.setup_autorefresh)
return;
if (!phys_enc->hw_pp->ops.get_autorefresh(phys_enc->hw_pp, NULL))
return;
}

- Marijn

> > if (!dpu_encoder_phys_cmd_is_master(phys_enc))
> > return;
> >
> > + if (!phys_enc->hw_pp->ops.get_autorefresh || !phys_enc->hw_pp->ops.setup_autorefresh)
> > + return;
> > +
> > /* If autorefresh is already disabled, we have nothing to do */
> > if (!phys_enc->hw_pp->ops.get_autorefresh(phys_enc->hw_pp, NULL))
> > return;
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> > index 9814ad52cc04..39d4b293710c 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> > @@ -59,11 +59,18 @@
> > #define MIXER_SC7180_MASK \
> > (BIT(DPU_DIM_LAYER) | BIT(DPU_MIXER_COMBINED_ALPHA))
> >
> > -#define PINGPONG_SDM845_MASK BIT(DPU_PINGPONG_DITHER)
> > +#define PINGPONG_SDM845_MASK \
> > + (BIT(DPU_PINGPONG_DITHER) | BIT(DPU_PINGPONG_TE))
> >
> > -#define PINGPONG_SDM845_SPLIT_MASK \
> > +#define PINGPONG_SDM845_TE2_MASK \
> > (PINGPONG_SDM845_MASK | BIT(DPU_PINGPONG_TE2))
> >
> > +#define PINGPONG_SM8150_MASK \
> > + (BIT(DPU_PINGPONG_DITHER))
> > +
> > +#define PINGPONG_SM8150_TE2_MASK \
> > + (PINGPONG_SM8150_MASK | BIT(DPU_PINGPONG_TE2))
> > +
> > #define CTL_SC7280_MASK \
> > (BIT(DPU_CTL_ACTIVE_CFG) | BIT(DPU_CTL_FETCH_ACTIVE) | BIT(DPU_CTL_VM_CFG))
> >
> > @@ -1156,21 +1163,21 @@ static const struct dpu_pingpong_sub_blks sc7280_pp_sblk = {
> > .len = 0x20, .version = 0x20000},
> > };
> >
> > -#define PP_BLK_TE(_name, _id, _base, _merge_3d, _sblk, _done, _rdptr) \
> > +#define PP_BLK_TE(_name, _id, _base, _features, _merge_3d, _sblk, _done, _rdptr) \
> > {\
> > .name = _name, .id = _id, \
> > .base = _base, .len = 0xd4, \
> > - .features = PINGPONG_SDM845_SPLIT_MASK, \
> > + .features = _features, \
> > .merge_3d = _merge_3d, \
> > .sblk = &_sblk, \
> > .intr_done = _done, \
> > .intr_rdptr = _rdptr, \
> > }
> > -#define PP_BLK(_name, _id, _base, _merge_3d, _sblk, _done, _rdptr) \
> > +#define PP_BLK(_name, _id, _base, _features, _merge_3d, _sblk, _done, _rdptr) \
> > {\
> > .name = _name, .id = _id, \
> > .base = _base, .len = 0xd4, \
> > - .features = PINGPONG_SDM845_MASK, \
> > + .features = _features, \
> > .merge_3d = _merge_3d, \
> > .sblk = &_sblk, \
> > .intr_done = _done, \
> > @@ -1178,55 +1185,55 @@ static const struct dpu_pingpong_sub_blks sc7280_pp_sblk = {
> > }
> >
> > static const struct dpu_pingpong_cfg sdm845_pp[] = {
> > - PP_BLK_TE("pingpong_0", PINGPONG_0, 0x70000, 0, sdm845_pp_sblk_te,
> > + PP_BLK_TE("pingpong_0", PINGPONG_0, 0x70000, PINGPONG_SDM845_TE2_MASK, 0, sdm845_pp_sblk_te,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 8),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 12)),
> > - PP_BLK_TE("pingpong_1", PINGPONG_1, 0x70800, 0, sdm845_pp_sblk_te,
> > + PP_BLK_TE("pingpong_1", PINGPONG_1, 0x70800, PINGPONG_SDM845_TE2_MASK, 0, sdm845_pp_sblk_te,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 9),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 13)),
> > - PP_BLK("pingpong_2", PINGPONG_2, 0x71000, 0, sdm845_pp_sblk,
> > + PP_BLK("pingpong_2", PINGPONG_2, 0x71000, PINGPONG_SDM845_MASK, 0, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 10),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 14)),
> > - PP_BLK("pingpong_3", PINGPONG_3, 0x71800, 0, sdm845_pp_sblk,
> > + PP_BLK("pingpong_3", PINGPONG_3, 0x71800, PINGPONG_SDM845_MASK, 0, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 11),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 15)),
> > };
> >
> > static struct dpu_pingpong_cfg sc7180_pp[] = {
> > - PP_BLK_TE("pingpong_0", PINGPONG_0, 0x70000, 0, sdm845_pp_sblk_te, -1, -1),
> > - PP_BLK_TE("pingpong_1", PINGPONG_1, 0x70800, 0, sdm845_pp_sblk_te, -1, -1),
> > + PP_BLK_TE("pingpong_0", PINGPONG_0, 0x70000, PINGPONG_SM8150_TE2_MASK, 0, sdm845_pp_sblk_te, -1, -1),
> > + PP_BLK_TE("pingpong_1", PINGPONG_1, 0x70800, PINGPONG_SM8150_TE2_MASK, 0, sdm845_pp_sblk_te, -1, -1),
> > };
> >
> > static const struct dpu_pingpong_cfg sm8150_pp[] = {
> > - PP_BLK_TE("pingpong_0", PINGPONG_0, 0x70000, MERGE_3D_0, sdm845_pp_sblk_te,
> > + PP_BLK_TE("pingpong_0", PINGPONG_0, 0x70000, PINGPONG_SM8150_TE2_MASK, MERGE_3D_0, sdm845_pp_sblk_te,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 8),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 12)),
> > - PP_BLK_TE("pingpong_1", PINGPONG_1, 0x70800, MERGE_3D_0, sdm845_pp_sblk_te,
> > + PP_BLK_TE("pingpong_1", PINGPONG_1, 0x70800, PINGPONG_SM8150_TE2_MASK, MERGE_3D_0, sdm845_pp_sblk_te,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 9),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 13)),
> > - PP_BLK("pingpong_2", PINGPONG_2, 0x71000, MERGE_3D_1, sdm845_pp_sblk,
> > + PP_BLK("pingpong_2", PINGPONG_2, 0x71000, PINGPONG_SM8150_MASK, MERGE_3D_1, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 10),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 14)),
> > - PP_BLK("pingpong_3", PINGPONG_3, 0x71800, MERGE_3D_1, sdm845_pp_sblk,
> > + PP_BLK("pingpong_3", PINGPONG_3, 0x71800, PINGPONG_SM8150_MASK, MERGE_3D_1, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 11),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 15)),
> > - PP_BLK("pingpong_4", PINGPONG_4, 0x72000, MERGE_3D_2, sdm845_pp_sblk,
> > + PP_BLK("pingpong_4", PINGPONG_4, 0x72000, PINGPONG_SM8150_MASK, MERGE_3D_2, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR2, 30),
> > -1),
> > - PP_BLK("pingpong_5", PINGPONG_5, 0x72800, MERGE_3D_2, sdm845_pp_sblk,
> > + PP_BLK("pingpong_5", PINGPONG_5, 0x72800, PINGPONG_SM8150_MASK, MERGE_3D_2, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR2, 31),
> > -1),
> > };
> >
> > static const struct dpu_pingpong_cfg sc7280_pp[] = {
> > - PP_BLK("pingpong_0", PINGPONG_0, 0x59000, 0, sc7280_pp_sblk, -1, -1),
> > - PP_BLK("pingpong_1", PINGPONG_1, 0x6a000, 0, sc7280_pp_sblk, -1, -1),
> > - PP_BLK("pingpong_2", PINGPONG_2, 0x6b000, 0, sc7280_pp_sblk, -1, -1),
> > - PP_BLK("pingpong_3", PINGPONG_3, 0x6c000, 0, sc7280_pp_sblk, -1, -1),
> > + PP_BLK("pingpong_0", PINGPONG_0, 0x59000, PINGPONG_SM8150_MASK, 0, sc7280_pp_sblk, -1, -1),
> > + PP_BLK("pingpong_1", PINGPONG_1, 0x6a000, PINGPONG_SM8150_MASK, 0, sc7280_pp_sblk, -1, -1),
> > + PP_BLK("pingpong_2", PINGPONG_2, 0x6b000, PINGPONG_SM8150_MASK, 0, sc7280_pp_sblk, -1, -1),
> > + PP_BLK("pingpong_3", PINGPONG_3, 0x6c000, PINGPONG_SM8150_MASK, 0, sc7280_pp_sblk, -1, -1),
> > };
> >
> > static struct dpu_pingpong_cfg qcm2290_pp[] = {
> > - PP_BLK("pingpong_0", PINGPONG_0, 0x70000, 0, sdm845_pp_sblk,
> > + PP_BLK("pingpong_0", PINGPONG_0, 0x70000, PINGPONG_SM8150_MASK, 0, sdm845_pp_sblk,
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 8),
> > DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 12)),
> > };
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> > index 0fcad9760b6f..30896c057f87 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> > @@ -274,14 +274,16 @@ static int dpu_hw_pp_setup_dsc(struct dpu_hw_pingpong *pp)
> > static void _setup_pingpong_ops(struct dpu_hw_pingpong *c,
> > unsigned long features)
> > {
> > - c->ops.setup_tearcheck = dpu_hw_pp_setup_te_config;
> > - c->ops.enable_tearcheck = dpu_hw_pp_enable_te;
> > - c->ops.connect_external_te = dpu_hw_pp_connect_external_te;
> > - c->ops.get_vsync_info = dpu_hw_pp_get_vsync_info;
> > - c->ops.setup_autorefresh = dpu_hw_pp_setup_autorefresh_config;
> > - c->ops.get_autorefresh = dpu_hw_pp_get_autorefresh_config;
> > - c->ops.poll_timeout_wr_ptr = dpu_hw_pp_poll_timeout_wr_ptr;
> > - c->ops.get_line_count = dpu_hw_pp_get_line_count;
> > + if (test_bit(DPU_PINGPONG_TE, &features)) {
> > + c->ops.setup_tearcheck = dpu_hw_pp_setup_te_config;
> > + c->ops.enable_tearcheck = dpu_hw_pp_enable_te;
> > + c->ops.connect_external_te = dpu_hw_pp_connect_external_te;
> > + c->ops.get_vsync_info = dpu_hw_pp_get_vsync_info;
> > + c->ops.setup_autorefresh = dpu_hw_pp_setup_autorefresh_config;
> > + c->ops.get_autorefresh = dpu_hw_pp_get_autorefresh_config;
> > + c->ops.poll_timeout_wr_ptr = dpu_hw_pp_poll_timeout_wr_ptr;
> > + c->ops.get_line_count = dpu_hw_pp_get_line_count;
> > + }
> > c->ops.setup_dsc = dpu_hw_pp_setup_dsc;
> > c->ops.enable_dsc = dpu_hw_pp_dsc_enable;
> > c->ops.disable_dsc = dpu_hw_pp_dsc_disable;
>
> --
> With best wishes
> Dmitry
>

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