[PATCH 04/26] drm/fb-helper: Add fill_info() functions

[Daniel Vetter]

The fbdev split between fix and var information is kinda
pointless for drm drivers since everything is fixed: The fbdev
emulation doesn't support changing modes at all.

Create a new simplified helper and use it in the generic fbdev
helper code. Follow-up patches will beef it up more and roll
it out to all drivers.

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/drm_fb_helper.c | 27 +++++++++++++++++++++++++--
 include/drm/drm_fb_helper.h     |  1 +
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 5eaccd202f4f..34c4ed378796 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -2105,6 +2105,30 @@ void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helpe
 }
 EXPORT_SYMBOL(drm_fb_helper_fill_var);
 
+/**
+ * drm_fb_helper_fill_info - initializes fbdev information
+ * @info: fbdev instance to set up
+ * @fb_helper: fb helper instance to use as template
+ *
+ *
+ * Sets up the variable and fixed fbdev metainformation from the given fb helper
+ * instance and the drm framebuffer allocated in &drm_fb_helper.fb.
+ *
+ * Drivers should call this (or their equivalent setup code) from their
+ * &drm_fb_helper_funcs.fb_probe callback after having allocated the fbdev
+ * backing storage framebuffer.
+ */
+void drm_fb_helper_fill_info(struct fb_info *info,
+			     struct drm_fb_helper *fb_helper)
+{
+	struct drm_framebuffer *fb = fb_helper->fb;
+
+	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
+	drm_fb_helper_fill_var(info, fb_helper, fb->width, fb->height);
+
+}
+EXPORT_SYMBOL(drm_fb_helper_fill_info);
+
 static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper,
 						uint32_t maxX,
 						uint32_t maxY)
@@ -3163,8 +3187,7 @@ int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 #endif
 	strcpy(fbi->fix.id, "DRM emulated");
 
-	drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->format->depth);
-	drm_fb_helper_fill_var(fbi, fb_helper, sizes->fb_width, sizes->fb_height);
+	drm_fb_helper_fill_info(fbi, fb_helper);
 
 	if (fb->funcs->dirty) {
 		struct fb_ops *fbops;
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index bb9acea61369..e8d92724f472 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -292,6 +292,7 @@ void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helpe
 			    uint32_t fb_width, uint32_t fb_height);
 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
 			    uint32_t depth);
+void drm_fb_helper_fill_info(struct fb_info *info, struct drm_fb_helper *fb_helper);
 
 void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
 
-- 
2.20.1