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Message-ID: <BN0PR02MB8173546D79BEC3714073201AE4889@BN0PR02MB8173.namprd02.prod.outlook.com>
Date: Thu, 14 Jul 2022 05:08:51 +0000
From: Vinod Polimera <vpolimer@....qualcomm.com>
To: "Vinod Polimera (QUIC)" <quic_vpolimer@...cinc.com>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
"freedreno@...ts.freedesktop.org" <freedreno@...ts.freedesktop.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
CC: "Vinod Polimera (QUIC)" <quic_vpolimer@...cinc.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"robdclark@...il.com" <robdclark@...il.com>,
"dianders@...omium.org" <dianders@...omium.org>,
"swboyd@...omium.org" <swboyd@...omium.org>,
"Kalyan Thota (QUIC)" <quic_kalyant@...cinc.com>,
"dmitry.baryshkov@...aro.org" <dmitry.baryshkov@...aro.org>,
"Kuogee Hsieh (QUIC)" <quic_khsieh@...cinc.com>,
"Vishnuvardhan Prodduturi (QUIC)" <quic_vproddut@...cinc.com>,
"bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
"Aravind Venkateswaran (QUIC)" <quic_aravindh@...cinc.com>,
"Abhinav Kumar (QUIC)" <quic_abhinavk@...cinc.com>,
"Sankeerth Billakanti (QUIC)" <quic_sbillaka@...cinc.com>
Subject: RE: [PATCH v6 01/10] drm/msm/disp/dpu: clear dpu_assign_crtc and get
crtc from connector state instead of dpu_enc
Gentle reminder to review this patch.
Thanks,
Vinod P.
> -----Original Message-----
> From: Vinod Polimera <quic_vpolimer@...cinc.com>
> Sent: Monday, July 11, 2022 6:27 PM
> To: dri-devel@...ts.freedesktop.org; linux-arm-msm@...r.kernel.org;
> freedreno@...ts.freedesktop.org; devicetree@...r.kernel.org
> Cc: Vinod Polimera (QUIC) <quic_vpolimer@...cinc.com>; linux-
> kernel@...r.kernel.org; robdclark@...il.com; dianders@...omium.org;
> swboyd@...omium.org; Kalyan Thota (QUIC) <quic_kalyant@...cinc.com>;
> dmitry.baryshkov@...aro.org; Kuogee Hsieh (QUIC)
> <quic_khsieh@...cinc.com>; Vishnuvardhan Prodduturi (QUIC)
> <quic_vproddut@...cinc.com>; bjorn.andersson@...aro.org; Aravind
> Venkateswaran (QUIC) <quic_aravindh@...cinc.com>; Abhinav Kumar
> (QUIC) <quic_abhinavk@...cinc.com>; Sankeerth Billakanti (QUIC)
> <quic_sbillaka@...cinc.com>
> Subject: [PATCH v6 01/10] drm/msm/disp/dpu: clear dpu_assign_crtc and get
> crtc from connector state instead of dpu_enc
>
> Update crtc retrieval from dpu_enc to dpu_enc connector state,
> since new links get set as part of the dpu enc virt mode set.
> The dpu_enc->crtc cache is no more needed, hence cleaning it as
> part of this change.
>
> Signed-off-by: Vinod Polimera <quic_vpolimer@...cinc.com>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 4 ----
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 30 ++++++++++++++----
> -----------
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 8 --------
> 3 files changed, 14 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> index b56f777..f91e3d1 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -972,7 +972,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc,
> */
> if (dpu_encoder_get_intf_mode(encoder) ==
> INTF_MODE_VIDEO)
> release_bandwidth = true;
> - dpu_encoder_assign_crtc(encoder, NULL);
> }
>
> /* wait for frame_event_done completion */
> @@ -1042,9 +1041,6 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
> trace_dpu_crtc_enable(DRMID(crtc), true, dpu_crtc);
> dpu_crtc->enabled = true;
>
> - drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state-
> >encoder_mask)
> - dpu_encoder_assign_crtc(encoder, crtc);
> -
> /* Enable/restore vblank irq handling */
> drm_crtc_vblank_on(crtc);
> }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 52516eb..0fddc9d 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -181,7 +181,6 @@ struct dpu_encoder_virt {
>
> bool intfs_swapped;
>
> - struct drm_crtc *crtc;
> struct drm_connector *connector;
>
> struct dentry *debugfs_root;
> @@ -1245,6 +1244,7 @@ static void dpu_encoder_vblank_callback(struct
> drm_encoder *drm_enc,
> struct dpu_encoder_phys *phy_enc)
> {
> struct dpu_encoder_virt *dpu_enc = NULL;
> + struct drm_crtc *crtc;
> unsigned long lock_flags;
>
> if (!drm_enc || !phy_enc)
> @@ -1253,9 +1253,14 @@ static void dpu_encoder_vblank_callback(struct
> drm_encoder *drm_enc,
> DPU_ATRACE_BEGIN("encoder_vblank_callback");
> dpu_enc = to_dpu_encoder_virt(drm_enc);
>
> + if (!dpu_enc->connector || !dpu_enc->connector->state)
> + return;
> +
> + crtc = dpu_enc->connector->state->crtc;
> +
> spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags);
> - if (dpu_enc->crtc)
> - dpu_crtc_vblank_callback(dpu_enc->crtc);
> + if (crtc)
> + dpu_crtc_vblank_callback(crtc);
> spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags);
>
> atomic_inc(&phy_enc->vsync_cnt);
> @@ -1280,29 +1285,22 @@ static void
> dpu_encoder_underrun_callback(struct drm_encoder *drm_enc,
> DPU_ATRACE_END("encoder_underrun_callback");
> }
>
> -void dpu_encoder_assign_crtc(struct drm_encoder *drm_enc, struct
> drm_crtc *crtc)
> -{
> - struct dpu_encoder_virt *dpu_enc =
> to_dpu_encoder_virt(drm_enc);
> - unsigned long lock_flags;
> -
> - spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags);
> - /* crtc should always be cleared before re-assigning */
> - WARN_ON(crtc && dpu_enc->crtc);
> - dpu_enc->crtc = crtc;
> - spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags);
> -}
> -
> void dpu_encoder_toggle_vblank_for_crtc(struct drm_encoder *drm_enc,
> struct drm_crtc *crtc, bool enable)
> {
> struct dpu_encoder_virt *dpu_enc =
> to_dpu_encoder_virt(drm_enc);
> + struct drm_crtc *new_crtc;
> unsigned long lock_flags;
> int i;
>
> trace_dpu_enc_vblank_cb(DRMID(drm_enc), enable);
>
> + if (!dpu_enc->connector || !dpu_enc->connector->state)
> + return;
> +
> + new_crtc = dpu_enc->connector->state->crtc;
> spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags);
> - if (dpu_enc->crtc != crtc) {
> + if (!new_crtc || new_crtc != crtc) {
> spin_unlock_irqrestore(&dpu_enc->enc_spinlock,
> lock_flags);
> return;
> }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> index 781d41c..edba815 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
> @@ -39,14 +39,6 @@ struct msm_display_info {
> };
>
> /**
> - * dpu_encoder_assign_crtc - Link the encoder to the crtc it's assigned to
> - * @encoder: encoder pointer
> - * @crtc: crtc pointer
> - */
> -void dpu_encoder_assign_crtc(struct drm_encoder *encoder,
> - struct drm_crtc *crtc);
> -
> -/**
> * dpu_encoder_toggle_vblank_for_crtc - Toggles vblank interrupts on or off
> if
> * the encoder is assigned to the given crtc
> * @encoder: encoder pointer
> --
> 2.7.4
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