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| author | Bastian Stender <bst@pengutronix.de> | 2017-02-28 15:31:26 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-02-28 15:52:53 +0100 |
| commit | b9cf45f00c6e120f58f02f45ef949a7be54da999 (patch) | |
| tree | 6fdcf7a7e162764a341e6f73c4b99c123b5c0a80 /drivers | |
| parent | b4f55fcf355a4d0ac456445a5f42f259f2812b57 (diff) | |
| download | barebox-b9cf45f00c6e120f58f02f45ef949a7be54da999.tar.gz barebox-b9cf45f00c6e120f58f02f45ef949a7be54da999.tar.xz | |
fb: introduce flush for virtual framebuffer
Some drivers need an explicit sync method to flush the virtual
framebuffer to the display. It is called fb_flush().
fb_flush() gets called on fbc_putc, on fb_close and in the pattern cycle
in the fbtest command.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fb.c | 26 | ||||
| -rw-r--r-- | drivers/video/fbconsole.c | 3 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/video/fb.c b/drivers/video/fb.c index 4d2d3aa650..6b88f2df97 100644 --- a/drivers/video/fb.c +++ b/drivers/video/fb.c @@ -31,6 +31,30 @@ static int fb_ioctl(struct cdev* cdev, int req, void *data) return 0; } +static int fb_close(struct cdev *cdev) +{ + struct fb_info *info = cdev->priv; + + if (info->fbops->fb_flush) + info->fbops->fb_flush(info); + return 0; +} + +static int fb_op_flush(struct cdev *cdev) +{ + struct fb_info *info = cdev->priv; + + if (info->fbops->fb_flush) + info->fbops->fb_flush(info); + return 0; +} + +void fb_flush(struct fb_info *info) +{ + if (info->fbops->fb_flush) + info->fbops->fb_flush(info); +} + static void fb_release_shadowfb(struct fb_info *info) { free(info->screen_base_shadow); @@ -199,6 +223,8 @@ static struct file_operations fb_ops = { .memmap = generic_memmap_rw, .lseek = dev_lseek_default, .ioctl = fb_ioctl, + .close = fb_close, + .flush = fb_op_flush, }; static void fb_print_mode(struct fb_videomode *mode) diff --git a/drivers/video/fbconsole.c b/drivers/video/fbconsole.c index 3b5637b2ba..b261f17048 100644 --- a/drivers/video/fbconsole.c +++ b/drivers/video/fbconsole.c @@ -335,6 +335,7 @@ static void fbc_putc(struct console_device *cdev, char c) { struct fbc_priv *priv = container_of(cdev, struct fbc_priv, cdev); + struct fb_info *fb = priv->fb; if (priv->in_console) return; @@ -393,6 +394,8 @@ static void fbc_putc(struct console_device *cdev, char c) } priv->in_console = 0; + + fb_flush(fb); } static int setup_font(struct fbc_priv *priv) |