drivers: video: simple_panel: make simple panel independent of backlight

This patch updates the necessary Kconfigs to make simple panel
driver independent of backlight driver  and compiling backlight
related code in simple-panel driver conditionally to when user
has set CONFIG_BACKLIGHT.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/video/simple_panel.c b/drivers/video/simple_panel.c
index c8f7022..91c91ee 100644 (file)
--- a/drivers/video/simple_panel.c
+++ b/drivers/video/simple_panel.c
@@ -63,12 +63,15 @@ static int simple_panel_of_to_plat(struct udevice *dev)
                                return ret;
                }
        }
+
        ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
-                                          "backlight", &priv->backlight);
+                                                  "backlight", &priv->backlight);
        if (ret) {
                debug("%s: Cannot get backlight: ret=%d\n", __func__, ret);
-               return log_ret(ret);
+               if (ret != -ENOENT)
+                       return log_ret(ret);
        }
+
        ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
                                   GPIOD_IS_OUT);
        if (ret) {