[PATCH RESEND 1/3] drm/verisilicon: fix DC8200 primary plane disable clearing FB_EN

[Icenowy Zheng]

From: Joey Lu <a0987203069@xxxxxxxxx>

vs_primary_plane_atomic_disable() calls regmap_set_bits() on
VSDC_FB_CONFIG_EX_FB_EN instead of regmap_clear_bits(), so disabling
the primary plane on DC8200-family hardware actually leaves the
framebuffer enable bit instead of clearing it.

Fixes: dbf21777caa8 ("drm: verisilicon: add a driver for Verisilicon display controllers")
Signed-off-by: Joey Lu <a0987203069@xxxxxxxxx>
[Icenowy: rebased on top of torvalds/master and reworked the commit
 message]
Signed-off-by: Icenowy Zheng <zhengxingda@xxxxxxxxxxx>
---
 drivers/gpu/drm/verisilicon/vs_primary_plane.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/verisilicon/vs_primary_plane.c b/drivers/gpu/drm/verisilicon/vs_primary_plane.c
index 8e94491693019..d5563c3b825c3 100644
--- a/drivers/gpu/drm/verisilicon/vs_primary_plane.c
+++ b/drivers/gpu/drm/verisilicon/vs_primary_plane.c
@@ -88,8 +88,8 @@ static void vs_primary_plane_atomic_disable(struct drm_plane *plane,
 	unsigned int output = vcrtc->id;
 	struct vs_dc *dc = vcrtc->dc;
 
-	regmap_set_bits(dc->regs, VSDC_FB_CONFIG_EX(output),
-			VSDC_FB_CONFIG_EX_FB_EN);
+	regmap_clear_bits(dc->regs, VSDC_FB_CONFIG_EX(output),
+			  VSDC_FB_CONFIG_EX_FB_EN);
 
 	vs_primary_plane_commit(dc, output);
 }
-- 
2.56.0