diff options
| author | Antonino A. Daplas <adaplas@gmail.com> | 2005-09-09 13:04:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 13:58:00 -0700 |
| commit | b8c909454f046b59065c6997b651fe20cd90c0f4 (patch) | |
| tree | 2a8e03fe69c1b02dc610f57208d693e05b95969c /drivers/video/fbmem.c | |
| parent | 094bb659f53b6d90aab6067268d6d14f1f352d30 (diff) | |
[PATCH] fbdev: Fix greater than 1 bit monochrome color handling
Currently, fbcon assumes that the visual FB_VISUAL_MONO* is always 1 bit.
According to Geert, there are old hardware where it's possible to have
monochrome at 8-bit, but has only 2 colors, black - 0x00 and white - 0xff.
Fix color handlers (fb_get_color_depth, and get_color) for this special case.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index a8eee79e117d..a815f5e2fcb5 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -62,16 +62,26 @@ int num_registered_fb; * Helpers */ -int fb_get_color_depth(struct fb_var_screeninfo *var) +int fb_get_color_depth(struct fb_var_screeninfo *var, + struct fb_fix_screeninfo *fix) { - if (var->green.length == var->blue.length && - var->green.length == var->red.length && - !var->green.offset && !var->blue.offset && - !var->red.offset) - return var->green.length; - else - return (var->green.length + var->red.length + - var->blue.length); + int depth = 0; + + if (fix->visual == FB_VISUAL_MONO01 || + fix->visual == FB_VISUAL_MONO10) + depth = 1; + else { + if (var->green.length == var->blue.length && + var->green.length == var->red.length && + var->green.offset == var->blue.offset && + var->green.offset == var->red.offset) + depth = var->green.length; + else + depth = var->green.length + var->red.length + + var->blue.length; + } + + return depth; } EXPORT_SYMBOL(fb_get_color_depth); @@ -249,13 +259,18 @@ static void fb_set_logo(struct fb_info *info, const struct linux_logo *logo, u8 *dst, int depth) { - int i, j, k, fg = 1; + int i, j, k; const u8 *src = logo->data; - u8 d, xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; + u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0; + u8 fg = 1, d; - if (fb_get_color_depth(&info->var) == 3) + if (fb_get_color_depth(&info->var, &info->fix) == 3) fg = 7; + if (info->fix.visual == FB_VISUAL_MONO01 || + info->fix.visual == FB_VISUAL_MONO10) + fg = ~((u8) (0xfff << info->var.green.length)); + switch (depth) { case 4: for (i = 0; i < logo->height; i++) @@ -318,7 +333,7 @@ static struct logo_data { int fb_prepare_logo(struct fb_info *info) { - int depth = fb_get_color_depth(&info->var); + int depth = fb_get_color_depth(&info->var, &info->fix); memset(&fb_logo, 0, sizeof(struct logo_data)); |