On 8/27/19 1:09 PM, Peter Rosin wrote:
> 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@xxxxxxxxxx>
Thanks, patch queued for v5.6 (also sorry for the delay).
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
> ---
> Documentation/fb/fbcon.rst | 5 +++++
> drivers/video/fbdev/core/fbcon.c | 7 +++++++
> drivers/video/fbdev/core/fbmem.c | 12 +++++++++---
> 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 64dd732021d8..c7ddcb72025b 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 303771264644..e37f72b2efca 100644
> --- a/include/linux/fb.h
> +++ b/include/linux/fb.h
> @@ -630,6 +630,7 @@ 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) \
>
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