[PATCH AUTOSEL 5.6 20/79] drm/bridge: anx6345: set correct BPC for display_info of connector

Sasha Levin
2020-04-30T13:51:19Z

From: Vasily Khoruzhick <anarsoul@gmail.com>

[ Upstream commit 1e8a6ce9186dbf342eebc07cf14cae5e82164e03 ]

Some drivers (e.g. sun4i-drm) need this info to decide whether they
need to enable dithering. Currently driver reports what panel supports
and if panel supports 8 we don't get dithering enabled.

Hardcode BPC to 6 for now since that's the only BPC
that driver supports.

Fixes: 6aa192698089 ("drm/bridge: Add Analogix anx6345 support")
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200329222253.2941405-1-anarsoul@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
index 526507102c1ea..8d32fea84c75e 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
@@ -485,6 +485,9 @@ static int anx6345_get_modes(struct drm_connector *connector)

num_modes += drm_add_edid_modes(connector, anx6345->edid);

+ /* Driver currently supports only 6bpc */
+ connector->display_info.bpc = 6;
+
unlock:
if (power_off)
anx6345_poweroff(anx6345);
--
2.20.1