drm/bridge: fsl-ldb: Drop DE signal polarity inversion
authorLiu Ying <victor.liu@nxp.com>
Fri, 1 Jul 2022 06:56:34 +0000 (14:56 +0800)
committerNeil Armstrong <narmstrong@baylibre.com>
Mon, 4 Jul 2022 14:17:07 +0000 (16:17 +0200)
commit1dbc790b4d416dacb124a6acd05f88a0bcf3be39
tree80060de24ca7c98bee87b682a79658ca7d664ce9
parent57ef278ef125e9188474a164f35dcffc69836d01
drm/bridge: fsl-ldb: Drop DE signal polarity inversion

It's unnecessary to invert input data enable signal polarity
according to the output one. Let's drop the inversion.
Since ->atomic_check() does nothing more than the inversion,
it can be dropped entirely as well.

Without this patch, 'koe,tx26d202vm0bwa' LVDS panel connected
with i.MX8MP EVK board does not show any data on screen.

Fixes: 463db5c2ed4a ("drm: bridge: ldb: Implement simple Freescale i.MX8MP LDB bridge")
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Marek Vasut <marex@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220701065634.4027537-4-victor.liu@nxp.com
drivers/gpu/drm/bridge/fsl-ldb.c