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* [PATCH 1/3] video: fb: add optional damage tracking
@ 2023-04-03 12:18 Philipp Zabel
  2023-04-03 12:18 ` [PATCH 2/3] video: fbconsole: " Philipp Zabel
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Philipp Zabel @ 2023-04-03 12:18 UTC (permalink / raw)
  To: barebox

Add an optional fb_damage operation that drivers may use to accumulate
damage on the framebuffer until fb_flush is called. The accumulated
damage can be used to support partial updates for displays with an
integrated framebuffer.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 drivers/video/fb.c | 6 ++++++
 include/fb.h       | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/video/fb.c b/drivers/video/fb.c
index 44754065e7d9..6f412d62c434 100644
--- a/drivers/video/fb.c
+++ b/drivers/video/fb.c
@@ -43,6 +43,12 @@ static int fb_close(struct cdev *cdev)
 	return 0;
 }
 
+void fb_damage(struct fb_info *info, struct fb_rect *rect)
+{
+	if (info->fbops->fb_damage)
+		info->fbops->fb_damage(info, rect);
+}
+
 static int fb_op_flush(struct cdev *cdev)
 {
 	struct fb_info *info = cdev->priv;
diff --git a/include/fb.h b/include/fb.h
index 15bb74b99576..4e3eb611db48 100644
--- a/include/fb.h
+++ b/include/fb.h
@@ -80,6 +80,13 @@ struct fb_bitfield {
 
 struct fb_info;
 
+struct fb_rect {
+	u32 x1;
+	u32 y1;
+	u32 x2;
+	u32 y2;
+};
+
 struct fb_ops {
 	/* set color register */
 	int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
@@ -87,6 +94,7 @@ struct fb_ops {
 	void (*fb_enable)(struct fb_info *info);
 	void (*fb_disable)(struct fb_info *info);
 	int (*fb_activate_var)(struct fb_info *info);
+	void (*fb_damage)(struct fb_info *info, struct fb_rect *rect);
 	void (*fb_flush)(struct fb_info *info);
 };
 
@@ -156,6 +164,7 @@ int register_framebuffer(struct fb_info *info);
 
 int fb_enable(struct fb_info *info);
 int fb_disable(struct fb_info *info);
+void fb_damage(struct fb_info *info, struct fb_rect *rect);
 void fb_flush(struct fb_info *info);
 
 #define FBIOGET_SCREENINFO	_IOR('F', 1, loff_t)
-- 
2.39.2




^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2023-04-05 12:28 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-04-03 12:18 [PATCH 1/3] video: fb: add optional damage tracking Philipp Zabel
2023-04-03 12:18 ` [PATCH 2/3] video: fbconsole: " Philipp Zabel
2023-04-05 11:13   ` Sascha Hauer
2023-04-05 12:27     ` Philipp Zabel
2023-04-03 12:18 ` [PATCH 3/3] video: mipi_dbi: add damage tracking and partial updates Philipp Zabel
2023-04-04 12:24 ` [PATCH 1/3] video: fb: add optional damage tracking Ahmad Fatoum
2023-04-05 12:26   ` Philipp Zabel

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