Add a port of the kernel of_get_display_timing() that writes a
struct fb_videomode instead of struct display_timing, which we
don't have.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
drivers/video/of_display_timing.c | 22 ++++++++++++++++++++++
include/fb.h | 2 ++
2 files changed, 24 insertions(+)
diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c
index 6fe1e1b08b6a..6082d454932d 100644
--- a/drivers/video/of_display_timing.c
+++ b/drivers/video/of_display_timing.c
@@ -98,6 +98,28 @@ static int of_parse_display_timing(const struct device_node *np,
return 0;
}
+/**
+ * of_get_display_timing - parse a display_timing entry
+ * @np: device_node with the timing subnode
+ * @name: name of the timing node
+ * @mode: fb_videomode struct to fill
+ **/
+int of_get_display_timing(const struct device_node *np, const char *name,
+ struct fb_videomode *mode)
+{
+ struct device_node *timing_np;
+
+ if (!np)
+ return -EINVAL;
+
+ timing_np = of_get_child_by_name(np, name);
+ if (!timing_np)
+ return -ENOENT;
+
+ return of_parse_display_timing(timing_np, mode);
+}
+EXPORT_SYMBOL_GPL(of_get_display_timing);
+
/**
* of_get_display_timings - parse all display_timing entries from a device_node
* @np: device_node with the subnodes
diff --git a/include/fb.h b/include/fb.h
index bf5f688342fd..15bb74b99576 100644
--- a/include/fb.h
+++ b/include/fb.h
@@ -147,6 +147,8 @@ struct fb_info {
int shadowfb;
};
+int of_get_display_timing(const struct device_node *np, const char *name,
+ struct fb_videomode *mode);
struct display_timings *of_get_display_timings(struct device_node *np);
void display_timings_release(struct display_timings *);
--
2.39.2
