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 rajeevny@codeaurora.org Reviewed-by: Douglas Anderson dianders@chromium.org ---
(no changes since v5)
This patch depends on the previous patch (2/5) of this series.
Changes in v4: - New
Changes in v5: - Address review comments and move backlight functions to drm_panel.c (Douglas) - Create and register DP AUX backlight if there is no backlight specified in the device tree and panel has the DP AUX channel. (Douglas) - The new drm_panel_dp_aux_backlight() will do the drm_edp_backlight_supported() check.
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 df6fbd1..26555ec 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;