video: ARM CLCD: use panel device node for getting backlight and mode

Having obtained panel device node in clcdfb_of_init_display() it allows to
generalize and simplify two more helper functions clcdfb_of_get_backlight()
and clcdfb_of_get_mode().

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

1 files changed, 5 insertions, 15 deletions

diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c
index f25b5fce9991..0fab92c62828 100644
--- a/drivers/video/fbdev/amba-clcd.c
+++ b/drivers/video/fbdev/amba-clcd.c
@@ -624,16 +624,11 @@ static int clcdfb_snprintf_mode(char *buf, int size, struct fb_videomode *mode)
                         mode->refresh);
 }
 
-static int clcdfb_of_get_backlight(struct device_node *endpoint,
+static int clcdfb_of_get_backlight(struct device_node *panel,
                                    struct clcd_panel *clcd_panel)
 {
-        struct device_node *panel;
         struct device_node *backlight;
 
-        panel = of_graph_get_remote_port_parent(endpoint);
-        if (!panel)
-                return -ENODEV;
-
         /* Look up the optional backlight phandle */
         backlight = of_parse_phandle(panel, "backlight", 0);
         if (backlight) {
@@ -646,19 +641,14 @@ static int clcdfb_of_get_backlight(struct device_node *endpoint,
         return 0;
 }
 
-static int clcdfb_of_get_mode(struct device *dev, struct device_node *endpoint,
-                struct clcd_panel *clcd_panel)
+static int clcdfb_of_get_mode(struct device *dev, struct device_node *panel,
+                              struct clcd_panel *clcd_panel)
 {
         int err;
-        struct device_node *panel;
         struct fb_videomode *mode;
         char *name;
         int len;
 
-        panel = of_graph_get_remote_port_parent(endpoint);
-        if (!panel)
-                return -ENODEV;
-
         /* Only directly connected DPI panels supported for now */
         if (of_device_is_compatible(panel, "panel-dpi"))
                 err = clcdfb_of_get_dpi_panel_mode(panel, clcd_panel);
@@ -791,11 +781,11 @@ static int clcdfb_of_init_display(struct clcd_fb *fb)
                         return err;
         }
 
-        err = clcdfb_of_get_backlight(endpoint, fb->panel);
+        err = clcdfb_of_get_backlight(panel, fb->panel);
         if (err)
                 return err;
 
-        err = clcdfb_of_get_mode(&fb->dev->dev, endpoint, fb->panel);
+        err = clcdfb_of_get_mode(&fb->dev->dev, panel, fb->panel);
         if (err)
                 return err;