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drm/rockchip: dw-dp: set the default bpc and color format

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when get edid failed or the edid not set the bpc and color format,
we need set a default value.

Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
Signed-off-by: Wyon bi <bivvy.bi@rock-chips.com>
Change-Id: Icf8a7104c8d16e38f276dc74ac4df20108adf6fb
This commit is contained in:
Zhang Yubing
2022-01-15 19:04:21 +08:00
committed by Tao Huang
parent 0f3345f410
commit ccff376b8b
1 changed files with 10 additions and 7 deletions
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17
drivers/gpu/drm/rockchip/dw-dp.c
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@@ -486,17 +486,20 @@ static int dw_dp_connector_get_modes(struct drm_connector *connector)
struct dw_dp *dp = connector_to_dp(connector);
struct drm_display_info *di = &connector->display_info;
struct edid *edid;
int num_modes;
int num_modes = 0;
edid = drm_bridge_get_edid(&dp->bridge, connector);
if (!edid) {
DRM_DEV_ERROR(dp->dev, "failed to get edid\n");
return 0;
if (edid) {
drm_connector_update_edid_property(connector, edid);
num_modes = drm_add_edid_modes(connector, edid);
kfree(edid);
}
drm_connector_update_edid_property(connector, edid);
num_modes = drm_add_edid_modes(connector, edid);
kfree(edid);
if (!di->color_formats)
di->color_formats = DRM_COLOR_FORMAT_RGB444;
if (!di->bpc)
di->bpc = 8;
if (num_modes > 0 && dp->split_mode) {
struct drm_display_mode *mode;