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(unknown [58.22.7.114]) by gzga-smtp-mtada-g1-1 (Coremail) with SMTP id _____wD3nxoCsSBn8+3dEA--.3291S6; Tue, 29 Oct 2024 17:55:23 +0800 (CST) From: Andy Yan To: heiko@sntech.de Cc: hjc@rock-chips.com, krzk+dt@kernel.org, s.hauer@pengutronix.de, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, derek.foreman@collabora.com, minhuadotchen@gmail.com, detlev.casanova@collabora.com, Andy Yan , Michael Riesch Subject: [PATCH v4 04/14] drm/rockchip: vop2: Fix the windows switch between different layers Date: Tue, 29 Oct 2024 17:54:57 +0800 Message-ID: <20241029095513.391006-5-andyshrk@163.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241029095513.391006-1-andyshrk@163.com> References: <20241029095513.391006-1-andyshrk@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wD3nxoCsSBn8+3dEA--.3291S6 X-Coremail-Antispam: 1Uf129KBjvJXoWxZw4fWF4DAFW7Gw15KryfWFg_yoW5ZFy3pF 15WrWjgw4UKFsIqr9rtr48uF4ayws7Gay7W3Z7tw1rGFyrtr1DJwn8Cr9ayryUGFn3uryY yr1j9r909FWqyr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jF2NtUUUUU= X-CM-SenderInfo: 5dqg52xkunqiywtou0bp/1tbiMwqHXmcgqJmjwgACs1 Content-Type: text/plain; charset="utf-8" From: Andy Yan Every layer of vop2 should bind a window, and we also need to make sure that this window is not used by other layer. 0x5 is a reserved layer sel value on rk3568, but it will select Cluster3 on rk3588, configure unused layers to 0x5 will lead alpha blending error on rk3588. When we bind a window from layerM to layerN, we move the old window on layerN to layerM. Fixes: 604be85547ce ("drm/rockchip: Add VOP2 driver") Signed-off-by: Andy Yan Tested-by: Derek Foreman Tested-by: Michael Riesch # on RK3568 Tested-by: Detlev Casanova --- (no changes since v1) drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 38 +++++++++++++++----- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm= /rockchip/rockchip_drm_vop2.c index c50d93df84046..4776a227e62c8 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c @@ -2364,7 +2364,9 @@ static void vop2_setup_layer_mixer(struct vop2_video_= port *vp) struct drm_plane *plane; u32 layer_sel =3D 0; u32 port_sel; - unsigned int nlayer, ofs; + u8 old_layer_id; + u8 layer_sel_id; + unsigned int ofs; u32 ovl_ctrl; int i; struct vop2_video_port *vp0 =3D &vop2->vps[0]; @@ -2408,9 +2410,28 @@ static void vop2_setup_layer_mixer(struct vop2_video= _port *vp) for (i =3D 0; i < vp->id; i++) ofs +=3D vop2->vps[i].nlayers; =20 - nlayer =3D 0; drm_atomic_crtc_for_each_plane(plane, &vp->crtc) { struct vop2_win *win =3D to_vop2_win(plane); + struct vop2_win *old_win; + + /* + * Find the layer this win bind in old state. + */ + for (old_layer_id =3D 0; old_layer_id < vop2->data->win_size; old_layer_= id++) { + layer_sel_id =3D (layer_sel >> (4 * old_layer_id)) & 0xf; + if (layer_sel_id =3D=3D win->data->layer_sel_id) + break; + } + + /* + * Find the win bind to this layer in old state + */ + for (i =3D 0; i < vop2->data->win_size; i++) { + old_win =3D &vop2->win[i]; + layer_sel_id =3D (layer_sel >> (4 * (plane->state->normalized_zpos + of= s))) & 0xf; + if (layer_sel_id =3D=3D old_win->data->layer_sel_id) + break; + } =20 switch (win->data->phys_id) { case ROCKCHIP_VOP2_CLUSTER0: @@ -2459,13 +2480,12 @@ static void vop2_setup_layer_mixer(struct vop2_vide= o_port *vp) 0x7); layer_sel |=3D RK3568_OVL_LAYER_SEL__LAYER(plane->state->normalized_zpos= + ofs, win->data->layer_sel_id); - nlayer++; - } - - /* configure unused layers to 0x5 (reserved) */ - for (; nlayer < vp->nlayers; nlayer++) { - layer_sel &=3D ~RK3568_OVL_LAYER_SEL__LAYER(nlayer + ofs, 0x7); - layer_sel |=3D RK3568_OVL_LAYER_SEL__LAYER(nlayer + ofs, 5); + /* + * When we bind a window from layerM to layerN, we also need to move the= old + * window on layerN to layerM to avoid one window selected by two or mor= e layers. + */ + layer_sel &=3D ~RK3568_OVL_LAYER_SEL__LAYER(old_layer_id, 0x7); + layer_sel |=3D RK3568_OVL_LAYER_SEL__LAYER(old_layer_id, old_win->data->= layer_sel_id); } =20 vop2_writel(vop2, RK3568_OVL_LAYER_SEL, layer_sel); --=20 2.34.1