Look up backlight device using devm_of_find_backlight().
This simplifies the code and prevents us from hardcoding
the node name in the driver.
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Jyri Sarha <jsarha@xxxxxx>
Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/gpu/drm/tilcdc/tilcdc_panel.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
index 12823d60c4e8..b207b2f19d42 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
@@ -299,7 +299,8 @@ static struct tilcdc_panel_info *of_get_panel_info(struct device_node *np)
static int panel_probe(struct platform_device *pdev)
{
- struct device_node *bl_node, *node = pdev->dev.of_node;
+ struct device_node *node = pdev->dev.of_node;
+ struct backlight_device *backlight;
struct panel_module *panel_mod;
struct tilcdc_module *mod;
struct pinctrl *pinctrl;
@@ -315,16 +316,10 @@ static int panel_probe(struct platform_device *pdev)
if (!panel_mod)
return -ENOMEM;
- bl_node = of_parse_phandle(node, "backlight", 0);
- if (bl_node) {
- panel_mod->backlight = of_find_backlight_by_node(bl_node);
- of_node_put(bl_node);
-
- if (!panel_mod->backlight)
- return -EPROBE_DEFER;
-
- dev_info(&pdev->dev, "found backlight\n");
- }
+ backlight = devm_of_find_backlight(&pdev->dev);
+ if (IS_ERR(backlight))
+ return PTR_ERR(backlight);
+ panel_mod->backlight = backlight;
panel_mod->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable",
GPIOD_OUT_LOW);
--
2.25.1
