diff options
| author | Philipp Zabel <p.zabel@pengutronix.de> | 2023-04-05 14:27:32 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-04-11 14:02:41 +0200 |
| commit | aaaae2cfbbb905b0c4ea8db6bd57ed94cf7840b8 (patch) | |
| tree | 9225dc36f7b0c2fcd41b742d5e6db989c47ea166 | |
| parent | 1c8f8141b9009fdb37d947cee7c401bcd2cba9c6 (diff) | |
| download | barebox-aaaae2cfbbb905b0c4ea8db6bd57ed94cf7840b8.tar.gz | |
video: fb: add optional damage tracking
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>
Link: https://lore.barebox.org/20230405122734.2348025-1-p.zabel@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | drivers/video/fb.c | 6 | ||||
| -rw-r--r-- | include/fb.h | 9 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/video/fb.c b/drivers/video/fb.c index 44754065e7..6f412d62c4 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 15bb74b995..88e6c0e458 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, const 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) |