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Subject[PATCH] fbdev: fbmem: convert CONFIG_FB_LOGO_CENTER into a cmd line, option
Date
On 2019-01-06 10:33, Geert Uytterhoeven wrote:
> Hi Peter,
>
> On Mon, Nov 26, 2018 at 10:59 PM Peter Rosin <peda@axentia.se> wrote:
>> If there are extra logos (CONFIG_FB_LOGO_EXTRA) the heights of these
>> extra logos are not considered when centering the first logo vertically.
>>
>> Signed-off-by: Peter Rosin <peda@axentia.se>
>
>> --- a/drivers/video/logo/Kconfig
>> +++ b/drivers/video/logo/Kconfig
>> @@ -10,6 +10,15 @@ menuconfig LOGO
>>
>> if LOGO
>>
>> +config FB_LOGO_CENTER
>> + bool "Center the logo"
>> + depends on FB=y
>> + help
>> + When this option is selected, the bootup logo is centered both
>> + horizontally and vertically. If more than one logo is displayed
>> + due to multiple CPUs, the collected line of logos is centered
>> + as a whole.
>> +
>
> Isn't a kernel command line option more suitable to configure the position
> of the logo?

That didn't occur to me previously, but it does make sense now that you
mention it. This is on top of v5.0-rc1, and if applied before v5.0 we
can avoid possible regressions for folks who might start to rely on
CONFIG_FB_LOGO_CENTER if v5.0 is released w/o this.

Cheers,
Peter

From de7353ab519ba9b5c9ea3f62d607bb8e94b687cc Mon Sep 17 00:00:00 2001
From: Peter Rosin <peda@axentia.se>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Rosin <peda@axentia.se>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Cc: linux-doc@vger.kernel.org
To: linux-kernel@vger.kernel.org
Date: Mon, 7 Jan 2019 08:35:26 +0100
Subject: [PATCH] fbdev: fbmem: convert CONFIG_FB_LOGO_CENTER into a cmd line
option

A command line option is much more flexible than a config option and
the supporting code is small. Gets rid of #ifdefs in the code too...

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
---
Documentation/fb/fbcon.txt | 6 ++++++
drivers/video/fbdev/core/fbcon.c | 5 +++++
drivers/video/fbdev/core/fbmem.c | 19 ++++++++++---------
drivers/video/logo/Kconfig | 9 ---------
include/linux/fb.h | 1 +
5 files changed, 22 insertions(+), 18 deletions(-)

diff --git a/Documentation/fb/fbcon.txt b/Documentation/fb/fbcon.txt
index 62af30511a95..fb5fa0a8d553 100644
--- a/Documentation/fb/fbcon.txt
+++ b/Documentation/fb/fbcon.txt
@@ -163,6 +163,12 @@ C. Boot options
be preserved until there actually is some text is output to the console.
This option causes fbcon to bind immediately to the fbdev device.

+7. fbcon=center-logo
+
+ When this option is selected, the bootup logo is centered both
+ horizontally and vertically. If more than one logo is displayed due to
+ multiple CPUs, the collected line of logos is centered as a whole.
+
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 8976190b6c1f..552cfee63d76 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -510,6 +510,11 @@ static int __init fb_console_setup(char *this_opt)
continue;
}
#endif
+
+ if (!strcmp(options, "center-logo")) {
+ fb_center_logo = true;
+ continue;
+ }
}
return 1;
}
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 558ed2ed3124..cb43a2258c51 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -53,6 +53,9 @@ EXPORT_SYMBOL(registered_fb);
int num_registered_fb __read_mostly;
EXPORT_SYMBOL(num_registered_fb);

+bool fb_center_logo __read_mostly;
+EXPORT_SYMBOL(fb_center_logo);
+
static struct fb_info *get_fb_info(unsigned int idx)
{
struct fb_info *fb_info;
@@ -506,8 +509,7 @@ static int fb_show_logo_line(struct fb_info *info, int rotate,
fb_set_logo(info, logo, logo_new, fb_logo.depth);
}

-#ifdef CONFIG_FB_LOGO_CENTER
- {
+ if (fb_center_logo) {
int xres = info->var.xres;
int yres = info->var.yres;

@@ -520,11 +522,11 @@ static int fb_show_logo_line(struct fb_info *info, int rotate,
--n;
image.dx = (xres - n * (logo->width + 8) - 8) / 2;
image.dy = y ?: (yres - logo->height) / 2;
+ } else {
+ image.dx = 0;
+ image.dy = y;
}
-#else
- image.dx = 0;
- image.dy = y;
-#endif
+
image.width = logo->width;
image.height = logo->height;

@@ -684,9 +686,8 @@ int fb_prepare_logo(struct fb_info *info, int rotate)
}

height = fb_logo.logo->height;
-#ifdef CONFIG_FB_LOGO_CENTER
- height += (yres - fb_logo.logo->height) / 2;
-#endif
+ if (fb_center_logo)
+ height += (yres - fb_logo.logo->height) / 2;

return fb_prepare_extra_logos(info, height, yres);
}
diff --git a/drivers/video/logo/Kconfig b/drivers/video/logo/Kconfig
index 1e972c4e88b1..d1f6196c8b9a 100644
--- a/drivers/video/logo/Kconfig
+++ b/drivers/video/logo/Kconfig
@@ -10,15 +10,6 @@ menuconfig LOGO

if LOGO

-config FB_LOGO_CENTER
- bool "Center the logo"
- depends on FB=y
- help
- When this option is selected, the bootup logo is centered both
- horizontally and vertically. If more than one logo is displayed
- due to multiple CPUs, the collected line of logos is centered
- as a whole.
-
config FB_LOGO_EXTRA
bool
depends on FB=y
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 7cdd31a69719..f52ef0ad6781 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -653,6 +653,7 @@ 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 struct class *fb_class;

#define for_each_registered_fb(i) \
--
2.11.0
\
 
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