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drm/rockchip: vop2: add support one esmart layer global alpha for rk3562/rk3528/rk3576

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To deal with bottom_layer_global_alpha when only have one esmart layer
at bottom layer. And the cluster global alpha is processed by cluster mix.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: I1f5de9774920a37a60d45c77c1f71bc740bbbb7a
This commit is contained in:
Sandy Huang
2025-08-02 17:20:57 +08:00
parent 437e91ca1e
commit f4f7ebc6d2
1 changed files with 22 additions and 0 deletions
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22
drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
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@@ -12034,6 +12034,28 @@ static void vop3_setup_alpha(struct vop2_video_port *vp,
vop2_writel(vop2, dst_alpha_ctrl_offset + offset, alpha.dst_alpha_ctrl.val);
}
/* To deal with bottom_layer_global_alpha when only have one esmart layer at
* bottom layer. And the cluster global alpha is processed by cluster mix.
*/
if (vp->nr_layers == 1) {
zpos = &vop2_zpos[0];
win = vop2_find_win_by_phys_id(vop2, zpos->win_phys_id);
if (!vop2_cluster_window(win) && (bottom_layer_global_alpha != 0xff)) {
alpha_config.src_premulti_en = true;
alpha_config.dst_premulti_en = false;
alpha_config.src_pixel_alpha_en = true;
alpha_config.src_glb_alpha_value = 0xff;
alpha_config.dst_glb_alpha_value = bottom_layer_global_alpha;
vop2_parse_alpha(&alpha_config, &alpha);
offset = (i - 1) * 0x10;
vop2_writel(vop2, src_color_ctrl_offset + offset, alpha.src_color_ctrl.val);
vop2_writel(vop2, dst_color_ctrl_offset + offset, alpha.dst_color_ctrl.val);
vop2_writel(vop2, src_alpha_ctrl_offset + offset, alpha.src_alpha_ctrl.val);
vop2_writel(vop2, dst_alpha_ctrl_offset + offset, alpha.dst_alpha_ctrl.val);
i++;
}
}
/* Transfer pixel alpha value to next mix */
alpha_config.src_premulti_en = true;
alpha_config.dst_premulti_en = true;