drm/sun4i: Move panel retrieval in RGB connector

In order to properly support bridges and use drm_encoder's bridge pointer,
move the panel (and bridge eventually) retrieval code in the RGB output
init function.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

3 files changed, 9 insertions, 11 deletions

diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
index f5bbac6efb4c..d32f08f9ce5f 100644
--- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -206,15 +206,17 @@ int sun4i_rgb_init(struct drm_device *drm)
         struct sun4i_rgb *rgb;
         int ret;
 
-        /* If we don't have a panel, there's no point in going on */
-        if (IS_ERR(tcon->panel))
-                return -ENODEV;
-
         rgb = devm_kzalloc(drm->dev, sizeof(*rgb), GFP_KERNEL);
         if (!rgb)
                 return -ENOMEM;
         rgb->drv = drv;
 
+        tcon->panel = sun4i_tcon_find_panel(tcon->dev->of_node);
+        if (IS_ERR(tcon->panel)) {
+                dev_info(drm->dev, "No panel found... RGB output disabled\n");
+                return 0;
+        }
+
         drm_encoder_helper_add(&rgb->encoder,
                                &sun4i_rgb_enc_helper_funcs);
         ret = drm_encoder_init(drm,
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index af136dfc206e..d2f7489d29a5 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -398,7 +398,7 @@ static int sun4i_tcon_init_regmap(struct device *dev,
         return 0;
 }
 
-static struct drm_panel *sun4i_tcon_find_panel(struct device_node *node)
+struct drm_panel *sun4i_tcon_find_panel(struct device_node *node)
 {
         struct device_node *port, *remote, *child;
         struct device_node *end_node = NULL;
@@ -485,12 +485,6 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master,
                 goto err_free_clocks;
         }
 
-        tcon->panel = sun4i_tcon_find_panel(dev->of_node);
-        if (IS_ERR(tcon->panel)) {
-                dev_info(dev, "No panel found... RGB output disabled\n");
-                return 0;
-        }
-
         ret = sun4i_rgb_init(drm);
         if (ret < 0)
                 goto err_free_clocks;
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
index 230550b720f1..4f81d86ee5a4 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -166,6 +166,8 @@ struct sun4i_tcon {
         struct drm_panel                *panel;
 };
 
+struct drm_panel *sun4i_tcon_find_panel(struct device_node *node);
+
 /* Global Control */
 void sun4i_tcon_disable(struct sun4i_tcon *tcon);
 void sun4i_tcon_enable(struct sun4i_tcon *tcon);