drm/i915/fbdev: Implement fb_dirty for intel custom fb helper

After disconnecting damage worker from update logic it's left to fbdev
emulation implementation to have fb_dirty function. Currently intel
fbdev doesn't have it. This is causing problems to features (PSR, FBC,
DRRS) relying on dirty callback.

Implement simple fb_dirty callback to deliver notifications about updates
in fb console.

v4: Add proper Fixes tag and modify commit message
v3: Check damage clip
v2: Improved commit message and added Fixes tag

Fixes: f231af498c29 ("drm/fb-helper: Disconnect damage worker from update logic")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230123074437.475103-1-jouni.hogander@intel.com
(cherry picked from commit 1af546c2cec6e28b6bbe01a4ad0c38e96e54fcb4)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 5575d7abdc0926093f768d2173c4dc784d23dda9..f76c06b7f1d4a5f5fc3aa9014580a1db84750f4e 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -328,8 +328,20 @@ out_unlock:
        return ret;
 }
 
+static int intelfb_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
+{
+       if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
+               return 0;
+
+       if (helper->fb->funcs->dirty)
+               return helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1);
+
+       return 0;
+}
+
 static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
        .fb_probe = intelfb_create,
+       .fb_dirty = intelfb_dirty,
 };
 
 static void intel_fbdev_destroy(struct intel_fbdev *ifbdev)