diff mbox series

[v4,05/17] drm/rockchip: vop2: Add write mask for VP config done

Message ID 20231207080029.652110-1-andyshrk@163.com (mailing list archive)
State New, archived
Headers show
Series Add VOP2 support on rk3588 | expand

Commit Message

Andy Yan Dec. 7, 2023, 8 a.m. UTC 
From: Andy Yan <andy.yan@rock-chips.com>

The write mask bit is used to make sure when writing
config done bit for one VP will not overwrite the other.

Unfortunately, the write mask bit is missing on
rk3566/8, that means when we write to these bits,
it will not take any effect.

We need this to make the vop work properly after
rk3566/8 variants.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

---

(no changes since v3)

Changes in v3:
- split from the vop2 driver patch

 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index a019cc9bbd54..25c1f33c5622 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -268,12 +268,23 @@  static bool vop2_cluster_window(const struct vop2_win *win)
 	return win->data->feature & WIN_FEATURE_CLUSTER;
 }
 
+/*
+ * Note:
+ * The write mask function is missing on rk3566/8, write
+ * to this bit has no effect, for the other soc(rk3588 and
+ * the following...), this function works well.
+ *
+ * GLB_CFG_DONE_EN doesn't have a write mask bit
+ *
+ */
 static void vop2_cfg_done(struct vop2_video_port *vp)
 {
 	struct vop2 *vop2 = vp->vop2;
+	u32 val = RK3568_REG_CFG_DONE__GLB_CFG_DONE_EN;
+
+	val |= BIT(vp->id) | (BIT(vp->id) << 16);
 
-	regmap_set_bits(vop2->map, RK3568_REG_CFG_DONE,
-			BIT(vp->id) | RK3568_REG_CFG_DONE__GLB_CFG_DONE_EN);
+	regmap_set_bits(vop2->map, RK3568_REG_CFG_DONE, val);
 }
 
 static void vop2_win_disable(struct vop2_win *win)