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 --- drivers/gpu/drm/drm_crtc.c | 20 +++++++++++++------- include/drm/drm_crtc.h | 4 ++++ 2 files changed, 17 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 7def92b..99e6b22 100644 --- 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 5b8847a..79a5a83 100644 --- 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);