This driver currently rewrites bus_flags based solely on the value of
DT property 'data-mirror' and ignores bus_flags which might have been
set in DT panel-timing node. Specificaly, the 'de-active' DT property
sets DRM_BUS_FLAG_DE_ bus_flags.
Since of_get_drm_panel_display_mode() conveniently parses the bus_flags
out of DT panel-timing property, just ORR them with bus_flags inferred
from 'data-mirror' DT property and use the result as panel bus_flags.
This fixes handling of panels with 'panel-timing { de-active = <1>; };'.
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Tested-by: Christoph Niedermaier <cniedermaier@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Christoph Niedermaier <cniedermaier@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Dmitry Osipenko <digetx@xxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Robert Foss <robert.foss@xxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
V2: - Collect RB from Laurent, TB from Christoph
---
drivers/gpu/drm/panel/panel-lvds.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 6422868c1089..eca067e78579 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -33,7 +33,6 @@ struct panel_lvds {
struct drm_display_mode dmode;
u32 bus_flags;
unsigned int bus_format;
- bool data_mirror;
struct regulator *supply;
@@ -99,9 +98,7 @@ static int panel_lvds_get_modes(struct drm_panel *panel,
connector->display_info.height_mm = lvds->dmode.height_mm;
drm_display_info_set_bus_formats(&connector->display_info,
&lvds->bus_format, 1);
- connector->display_info.bus_flags = lvds->data_mirror
- ? DRM_BUS_FLAG_DATA_LSB_TO_MSB
- : DRM_BUS_FLAG_DATA_MSB_TO_LSB;
+ connector->display_info.bus_flags = lvds->bus_flags;
drm_connector_set_panel_orientation(connector, lvds->orientation);
return 1;
@@ -154,7 +151,9 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds)
lvds->bus_format = ret;
- lvds->data_mirror = of_property_read_bool(np, "data-mirror");
+ lvds->bus_flags |= of_property_read_bool(np, "data-mirror") ?
+ DRM_BUS_FLAG_DATA_LSB_TO_MSB :
+ DRM_BUS_FLAG_DATA_MSB_TO_LSB;
return 0;
}
--
2.35.1
