[Intel-gfx] [PATCH v4] drm/i915/fbdev: Implement fb_dirty for intel custom fb helper

Jouni Högander
2023-01-23T07:44:58Z

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>
---
drivers/gpu/drm/i915/display/intel_fbdev.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c
index 19f3b5d92a55..d39db8050c69 100644
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -321,8 +321,20 @@ static int intelfb_create(struct drm_fb_helper *helper,
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)
--
2.34.1