From bfd451403d70b13d22db097e4590fa80ba2160eb Mon Sep 17 00:00:00 2001 From: Rajeev Nandan Date: Sat, 26 Jun 2021 22:21:04 +0530 Subject: [PATCH] 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 --- drivers/gpu/drm/panel/panel-simple.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index 78f0394..6f233f2 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; -- 2.7.4