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vga16fb: restrict to blit rectangles with widths of multiples of 8 pixels

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Advertise that vga16fb can only handle widths that are 8-pixel-multiple only
(software limitation). To ensure that a legal font is available, SELECT an
8x16 font in Kconfig.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Antonino A. Daplas 2007-05-08 00:39:12 -07:00 • committed by Linus Torvalds
parent 2d2699d984
commit d60d2d8a42
2 changed files with 3 additions and 0 deletions
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1
drivers/video/Kconfig
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@ -519,6 +519,7 @@ config FB_VGA16
select FB_CFB_COPYAREA select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT select FB_CFB_IMAGEBLIT
select VGASTATE select VGASTATE
select FONT_8x16 if FRAMEBUFFER_CONSOLE
help help
This is the frame buffer device driver for VGA 16 color graphic This is the frame buffer device driver for VGA 16 color graphic
cards. Say Y if you have such a card. cards. Say Y if you have such a card.

2
drivers/video/vga16fb.c
View file

@ -1378,6 +1378,8 @@ static int __init vga16fb_probe(struct platform_device *dev)
info->fbops = &vga16fb_ops; info->fbops = &vga16fb_ops;
info->var = vga16fb_defined; info->var = vga16fb_defined;
info->fix = vga16fb_fix; info->fix = vga16fb_fix;
/* supports 8-pixel wide blit rectangles only */
info->pixmap.blit_x = 1 << (8 - 1);
info->flags = FBINFO_FLAG_DEFAULT | info->flags = FBINFO_FLAG_DEFAULT |
FBINFO_HWACCEL_YPAN; FBINFO_HWACCEL_YPAN;