From: Rajeev Nandan Date: Sat, 26 Jun 2021 16:51:04 +0000 (+0530) Subject: drm/panel-simple: Support DP AUX backlight X-Git-Tag: v5.15-rc1~148^2~23^2~32 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=bfd451403d70b13d22db097e4590fa80ba2160eb;p=thirdparty%2Fkernel%2Flinux.git drm/panel-simple: Support DP AUX backlight If there is no backlight specified in the device tree and the panel has access to the DP AUX channel then create a DP AUX backlight if supported by the panel. Signed-off-by: Rajeev Nandan Reviewed-by: Douglas Anderson Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-3-git-send-email-rajeevny@codeaurora.org --- diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index 78f0394e3b248..6f233f2a4e3dd 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -800,6 +800,12 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc, if (err) goto disable_pm_runtime; + if (!panel->base.backlight && panel->aux) { + err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); + if (err) + goto disable_pm_runtime; + } + drm_panel_add(&panel->base); return 0;