vga16fb: restrict to blit rectangles with widths of multiples of 8 pixels
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>
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@ -519,6 +519,7 @@ config FB_VGA16
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select FB_CFB_COPYAREA
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select FB_CFB_IMAGEBLIT
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select VGASTATE
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select FONT_8x16 if FRAMEBUFFER_CONSOLE
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help
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This is the frame buffer device driver for VGA 16 color graphic
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cards. Say Y if you have such a card.
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@ -1378,6 +1378,8 @@ static int __init vga16fb_probe(struct platform_device *dev)
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info->fbops = &vga16fb_ops;
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info->var = vga16fb_defined;
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info->fix = vga16fb_fix;
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/* supports 8-pixel wide blit rectangles only */
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info->pixmap.blit_x = 1 << (8 - 1);
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info->flags = FBINFO_FLAG_DEFAULT |
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FBINFO_HWACCEL_YPAN;
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