drm/sun4i: tcon: Make tcon_set_mux mode argument const

The drm_display_mode pointer can be mark const, so let's do it.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b0cce5a43fc3b56953d21a54fc3c14672f755f42.1508231063.git-series.maxime.ripard@free-electrons.com

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 68751b9..54e1796 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -134,7 +134,7 @@ static struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm)
 }
 
 void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
-                       struct drm_encoder *encoder)
+                       const struct drm_encoder *encoder)
 {
        int ret = -ENOTSUPP;
 
@@ -783,7 +783,7 @@ static int sun4i_tcon_remove(struct platform_device *pdev)
 
 /* platform specific TCON muxing callbacks */
 static int sun5i_a13_tcon_set_mux(struct sun4i_tcon *tcon,
-                                 struct drm_encoder *encoder)
+                                 const struct drm_encoder *encoder)
 {
        u32 val;
 
@@ -799,7 +799,7 @@ static int sun5i_a13_tcon_set_mux(struct sun4i_tcon *tcon,
 }
 
 static int sun6i_tcon_set_mux(struct sun4i_tcon *tcon,
-                             struct drm_encoder *encoder)
+                             const struct drm_encoder *encoder)
 {
        struct sun4i_tcon *tcon0 = sun4i_get_tcon0(encoder->dev);
        u32 shift;

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
index d9e1357..d81c6e2 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -152,7 +152,7 @@ struct sun4i_tcon_quirks {
        bool    needs_de_be_mux; /* sun6i needs mux to select backend */
 
        /* callback to handle tcon muxing options */
-       int     (*set_mux)(struct sun4i_tcon *, struct drm_encoder *);
+       int     (*set_mux)(struct sun4i_tcon *, const struct drm_encoder *);
 };
 
 struct sun4i_tcon {