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authorSam Ravnborg <sam@ravnborg.org>2020-05-14 21:09:44 +0200
committerSam Ravnborg <sam@ravnborg.org>2020-05-17 14:54:39 +0200
commit1efa9eff7b94ed834162a17091db2fedc656763b (patch)
tree13508e7b6d1b29a4dffeaad782ddf78d91d5ea3a /drivers/gpu/drm/omapdrm
parentb718102dbdfd0285ad559687a30e27cc9124e592 (diff)
drm/omap: display: use devm_of_find_backlight
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@ravnborg.org> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Zheng Bin <zhengbin13@huawei.com> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Enrico Weigelt <info@metux.net> Cc: Allison Randal <allison@lohutok.net> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200514191001.457441-2-sam@ravnborg.org
Diffstat (limited to 'drivers/gpu/drm/omapdrm')
-rw-r--r--drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index 3484b5d4a91c..faca5c873bde 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -1163,7 +1163,7 @@ static const struct omap_dss_driver dsicm_dss_driver = {
static int dsicm_probe_of(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
- struct device_node *backlight;
+ struct backlight_device *backlight;
struct panel_drv_data *ddata = platform_get_drvdata(pdev);
struct display_timing timing;
int err;
@@ -1216,17 +1216,15 @@ static int dsicm_probe_of(struct platform_device *pdev)
ddata->vddi = NULL;
}
- backlight = of_parse_phandle(node, "backlight", 0);
- if (backlight) {
- ddata->extbldev = of_find_backlight_by_node(backlight);
- of_node_put(backlight);
+ backlight = devm_of_find_backlight(&pdev->dev);
+ if (IS_ERR(backlight))
+ return PTR_ERR(backlight);
- if (!ddata->extbldev)
- return -EPROBE_DEFER;
- } else {
- /* assume native backlight support */
+ /* If no backlight device is found assume native backlight support */
+ if (backlight)
+ ddata->extbldev = backlight;
+ else
ddata->use_dsi_backlight = true;
- }
/* TODO: ulps */