drm: Move simple_display_pipe prepare_fb helper into gem fb helpers
There's nothing tinydrm specific to this, and there's a few more
copies of the same in various other drivers.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Cc: David Lechner <david@lechnology.com>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Acked-by: David Lechner <david@lechnology.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180405154449.23038-3-daniel.vetter@ffwll.ch
diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
index 4d682a6..acfbc06 100644
--- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c
+++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
@@ -22,6 +22,7 @@
#include <drm/drm_gem.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_modeset_helper.h>
+#include <drm/drm_simple_kms_helper.h>
/**
* DOC: overview
@@ -266,6 +267,24 @@ int drm_gem_fb_prepare_fb(struct drm_plane *plane,
EXPORT_SYMBOL_GPL(drm_gem_fb_prepare_fb);
/**
+ * drm_gem_fb_simple_display_pipe_prepare_fb - prepare_fb helper for
+ * &drm_simple_display_pipe
+ * @pipe: Simple display pipe
+ * @plane_state: Plane state
+ *
+ * This function uses drm_gem_fb_prepare_fb() to check if the plane FB has a
+ * &dma_buf attached, extracts the exclusive fence and attaches it to plane
+ * state for the atomic helper to wait on. Drivers can use this as their
+ * &drm_simple_display_pipe_funcs.prepare_fb callback.
+ */
+int drm_gem_fb_simple_display_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
+ struct drm_plane_state *plane_state)
+{
+ return drm_gem_fb_prepare_fb(&pipe->plane, plane_state);
+}
+EXPORT_SYMBOL(drm_gem_fb_simple_display_pipe_prepare_fb);
+
+/**
* drm_gem_fbdev_fb_create - Create a GEM backed &drm_framebuffer for fbdev
* emulation
* @dev: DRM device