diff options
| author | Peter Rosin <peda@axentia.se> | 2019-08-27 14:09:21 +0300 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-01-03 16:27:40 +0300 |
| commit | 691f50ab2742556aea467a946e10393da2e8d9ef (patch) | |
| tree | 1b3f707297cac69b241769ad73d41729674f0f05 | |
| parent | fd933c00ebe220060e66fb136a7050a242456566 (diff) | |
| download | linux-691f50ab2742556aea467a946e10393da2e8d9ef.tar.xz | |
fbdev: fbmem: allow overriding the number of bootup logos
Probably most useful if you want no logo at all, or if you only want one
logo regardless of how many CPU cores you have.
Signed-off-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190827110854.12574-3-peda@axentia.se
| -rw-r--r-- | Documentation/fb/fbcon.rst | 5 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/fbcon.c | 7 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/fbmem.c | 12 | ||||
| -rw-r--r-- | include/linux/fb.h | 1 |
4 files changed, 22 insertions, 3 deletions
diff --git a/Documentation/fb/fbcon.rst b/Documentation/fb/fbcon.rst index 65ba40255137..e57a3d1d085a 100644 --- a/Documentation/fb/fbcon.rst +++ b/Documentation/fb/fbcon.rst @@ -174,6 +174,11 @@ C. Boot options displayed due to multiple CPUs, the collected line of logos is moved as a whole. +9. fbcon=logo-count:<n> + + The value 'n' overrides the number of bootup logos. 0 disables the + logo, and -1 gives the default which is the number of online CPUs. + C. Attaching, Detaching and Unloading Before going on to how to attach, detach and unload the framebuffer console, an diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index c9235a2f42f8..bb6ae995c2e5 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -536,6 +536,13 @@ static int __init fb_console_setup(char *this_opt) fb_center_logo = true; continue; } + + if (!strncmp(options, "logo-count:", 11)) { + options += 11; + if (*options) + fb_logo_count = simple_strtol(options, &options, 0); + continue; + } } return 1; } diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 7ddeb90337bc..7ce21009f85d 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -56,6 +56,8 @@ EXPORT_SYMBOL(num_registered_fb); bool fb_center_logo __read_mostly; EXPORT_SYMBOL(fb_center_logo); +int fb_logo_count __read_mostly = -1; + static struct fb_info *get_fb_info(unsigned int idx) { struct fb_info *fb_info; @@ -620,7 +622,7 @@ int fb_prepare_logo(struct fb_info *info, int rotate) memset(&fb_logo, 0, sizeof(struct logo_data)); if (info->flags & FBINFO_MISC_TILEBLITTING || - info->fbops->owner) + info->fbops->owner || !fb_logo_count) return 0; if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { @@ -686,10 +688,14 @@ int fb_prepare_logo(struct fb_info *info, int rotate) int fb_show_logo(struct fb_info *info, int rotate) { + unsigned int count; int y; - y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, - num_online_cpus()); + if (!fb_logo_count) + return 0; + + count = fb_logo_count < 0 ? num_online_cpus() : fb_logo_count; + y = fb_show_logo_line(info, rotate, fb_logo.logo, 0, count); y = fb_show_extra_logos(info, y, rotate); return y; diff --git a/include/linux/fb.h b/include/linux/fb.h index 6557fabdea62..3b4b2f0c6994 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -625,6 +625,7 @@ extern int fb_new_modelist(struct fb_info *info); extern struct fb_info *registered_fb[FB_MAX]; extern int num_registered_fb; extern bool fb_center_logo; +extern int fb_logo_count; extern struct class *fb_class; #define for_each_registered_fb(i) \ |