drm: Make drm_crtc_check_viewport non-static

This function will be used by the universal plane helpers and may also
be useful for individual drivers.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 7def92b8acc2d28bc9a1345ad43f110d4cf6036a..99e6b229bb382aaf894ca4db2b7eed41318d9980 100644 (file)
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2186,14 +2186,19 @@ int drm_mode_set_config_internal(struct drm_mode_set *set)
 }
 EXPORT_SYMBOL(drm_mode_set_config_internal);
 
-/*
- * Checks that the framebuffer is big enough for the CRTC viewport
- * (x, y, hdisplay, vdisplay)
+/**
+ * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
+ *     CRTC viewport
+ * @crtc: CRTC that framebuffer will be displayed on
+ * @x: x panning
+ * @y: y panning
+ * @mode: mode that framebuffer will be displayed under
+ * @fb: framebuffer to check size of
  */
-static int drm_crtc_check_viewport(const struct drm_crtc *crtc,
-                                  int x, int y,
-                                  const struct drm_display_mode *mode,
-                                  const struct drm_framebuffer *fb)
+int drm_crtc_check_viewport(const struct drm_crtc *crtc,
+                           int x, int y,
+                           const struct drm_display_mode *mode,
+                           const struct drm_framebuffer *fb)
 
 {
        int hdisplay, vdisplay;
@@ -2224,6 +2229,7 @@ static int drm_crtc_check_viewport(const struct drm_crtc *crtc,
 
        return 0;
 }
+EXPORT_SYMBOL(drm_crtc_check_viewport);
 
 /**
  * drm_mode_setcrtc - set CRTC configuration

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 3894f85dcdffc1b87c2317e4fd9f3b580e48cd74..2765a4eea4ccd6fb127312248883dff2aa633ad5 100644 (file)
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -882,6 +882,10 @@ extern int drm_plane_init(struct drm_device *dev,
                          bool priv);
 extern void drm_plane_cleanup(struct drm_plane *plane);
 extern void drm_plane_force_disable(struct drm_plane *plane);
+extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
+                                  int x, int y,
+                                  const struct drm_display_mode *mode,
+                                  const struct drm_framebuffer *fb);
 
 extern void drm_encoder_cleanup(struct drm_encoder *encoder);