From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> To: dri-devel@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org, Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>, Michael Rodin <mrodin@de.adit-jv.com>, michael@rodin.online, efriedrich@de.adit-jv.com, erosca@de.adit-jv.com Subject: [PATCH 2/2] drm: rcar-du: Don't restart group when enabling plane on Gen3 Date: Mon, 21 Feb 2022 19:13:40 +0200 [thread overview] Message-ID: <20220221171340.11113-3-laurent.pinchart+renesas@ideasonboard.com> (raw) In-Reply-To: <20220221171340.11113-1-laurent.pinchart+renesas@ideasonboard.com> On Gen3 hardware enabling a VSP plane doesn't change any register that requires DRES to take effect. Avoid a group restart in that case. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- drivers/gpu/drm/rcar-du/rcar_du_plane.c | 6 ++++++ drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 9 --------- 2 files changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index 9b058d6cb032..22aeeb1cc1fb 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -560,6 +560,12 @@ void __rcar_du_plane_setup(struct rcar_du_group *rgrp, if (rcdu->vspd1_sink != vspd1_sink) { rcdu->vspd1_sink = vspd1_sink; rcar_du_set_dpad0_vsp1_routing(rcdu); + + /* + * Changes to the VSP1 sink take effect on DRES and thus + * need a restart of the group. + */ + rgrp->need_restart = true; } } } diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c index b7fc5b069cbc..32530d698e75 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c @@ -84,15 +84,6 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) __rcar_du_plane_setup(crtc->group, &state); - /* - * Ensure that the plane source configuration takes effect by requesting - * a restart of the group. See rcar_du_plane_atomic_update() for a more - * detailed explanation. - * - * TODO: Check whether this is still needed on Gen3. - */ - crtc->group->need_restart = true; - vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg); } -- Regards, Laurent Pinchart
WARNING: multiple messages have this Message-ID (diff)
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> To: dri-devel@lists.freedesktop.org Cc: efriedrich@de.adit-jv.com, michael@rodin.online, Michael Rodin <mrodin@de.adit-jv.com>, linux-renesas-soc@vger.kernel.org, Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>, erosca@de.adit-jv.com Subject: [PATCH 2/2] drm: rcar-du: Don't restart group when enabling plane on Gen3 Date: Mon, 21 Feb 2022 19:13:40 +0200 [thread overview] Message-ID: <20220221171340.11113-3-laurent.pinchart+renesas@ideasonboard.com> (raw) In-Reply-To: <20220221171340.11113-1-laurent.pinchart+renesas@ideasonboard.com> On Gen3 hardware enabling a VSP plane doesn't change any register that requires DRES to take effect. Avoid a group restart in that case. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- drivers/gpu/drm/rcar-du/rcar_du_plane.c | 6 ++++++ drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 9 --------- 2 files changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index 9b058d6cb032..22aeeb1cc1fb 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -560,6 +560,12 @@ void __rcar_du_plane_setup(struct rcar_du_group *rgrp, if (rcdu->vspd1_sink != vspd1_sink) { rcdu->vspd1_sink = vspd1_sink; rcar_du_set_dpad0_vsp1_routing(rcdu); + + /* + * Changes to the VSP1 sink take effect on DRES and thus + * need a restart of the group. + */ + rgrp->need_restart = true; } } } diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c index b7fc5b069cbc..32530d698e75 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c @@ -84,15 +84,6 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) __rcar_du_plane_setup(crtc->group, &state); - /* - * Ensure that the plane source configuration takes effect by requesting - * a restart of the group. See rcar_du_plane_atomic_update() for a more - * detailed explanation. - * - * TODO: Check whether this is still needed on Gen3. - */ - crtc->group->need_restart = true; - vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg); } -- Regards, Laurent Pinchart
next prev parent reply other threads:[~2022-02-21 17:14 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-02-21 17:13 [PATCH 0/2] drm: rcar-du: Avoid flicker when enabling a VSP plane Laurent Pinchart 2022-02-21 17:13 ` Laurent Pinchart 2022-02-21 17:13 ` [PATCH 1/2] drm: rcar-du: Don't select VSP1 sink on Gen3 Laurent Pinchart 2022-02-21 17:13 ` Laurent Pinchart 2022-03-03 11:58 ` Kieran Bingham 2022-03-03 11:58 ` Kieran Bingham 2022-02-21 17:13 ` Laurent Pinchart [this message] 2022-02-21 17:13 ` [PATCH 2/2] drm: rcar-du: Don't restart group when enabling plane " Laurent Pinchart 2022-03-03 12:00 ` Kieran Bingham 2022-03-03 12:00 ` Kieran Bingham
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