[PATCH v2] drm/fb-helper: add DRM_FB_HELPER_DEFAULT_OPS for fb_ops

[Stefan Christ]

The define DRM_FB_HELPER_DEFAULT_OPS provides the drm_fb_helper default
implementations for functions in struct fb_ops. A drm driver can use it
like:

    static struct fb_ops drm_fbdev_cma_ops = {
        .owner          = THIS_MODULE,
        DRM_FB_HELPER_DEFAULT_OPS,
        /* driver specific implementations */
    };

Suggested-by: Daniel Vetter <daniel at ffwll.ch>
Signed-off-by: Stefan Christ <contact at stefanchrist.eu>
---
v2: Fix sphinx error:
     warning: Cannot understand  * @DRM_FB_HELPER_DEFAULT_OPS:
---
 include/drm/drm_fb_helper.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index db8d478..f7d7126 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -214,6 +214,19 @@ struct drm_fb_helper {
 	bool delayed_hotplug;
 };
 
+/**
+ * define DRM_FB_HELPER_DEFAULT_OPS - helper define for drm drivers
+ *
+ * Helper define to register default implementations of drm_fb_helper
+ * functions. To be used in struct fb_ops of drm drivers.
+ */
+#define DRM_FB_HELPER_DEFAULT_OPS \
+	.fb_check_var	= drm_fb_helper_check_var, \
+	.fb_set_par	= drm_fb_helper_set_par, \
+	.fb_setcmap	= drm_fb_helper_setcmap, \
+	.fb_blank	= drm_fb_helper_blank, \
+	.fb_pan_display	= drm_fb_helper_pan_display
+
 #ifdef CONFIG_DRM_FBDEV_EMULATION
 int drm_fb_helper_modinit(void);
 void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
-- 
2.1.4