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[PATCH] fbdev: Fix greater than 1 bit monochrome color handling

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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>
This commit is contained in:
Antonino A. Daplas
2005-09-09 13:04:37 -07:00
committed by Linus Torvalds
父節點 094bb659f5
當前提交 b8c909454f
共有 5 個文件被更改，包括 52 次插入 和 28 次删除
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26
drivers/video/console/fbcon.c
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@@ -214,7 +214,7 @@ static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
static inline int get_color(struct vc_data *vc, struct fb_info *info,
u16 c, int is_fg)
{
int depth = fb_get_color_depth(&info->var);
int depth = fb_get_color_depth(&info->var, &info->fix);
int color = 0;
if (console_blanked) {
@@ -230,9 +230,13 @@ static inline int get_color(struct vc_data *vc, struct fb_info *info,
switch (depth) {
case 1:
{
int col = ~(0xfff << (max(info->var.green.length,
max(info->var.red.length,
info->var.blue.length)))) & 0xff;
/* 0 or 1 */
int fg = (info->fix.visual != FB_VISUAL_MONO01) ? 1 : 0;
int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : 1;
int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
if (console_blanked)
fg = bg;
@@ -246,7 +250,6 @@ static inline int get_color(struct vc_data *vc, struct fb_info *info,
* is grayscale.
*/
color /= 4;
break;
case 3:
/*
* Last 8 entries of default 16-color palette is a more intense
@@ -426,7 +429,7 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
* remove underline attribute from erase character
* if black and white framebuffer.
*/
if (fb_get_color_depth(&info->var) == 1)
if (fb_get_color_depth(&info->var, &info->fix) == 1)
erase &= ~0x400;
logo_height = fb_prepare_logo(info);
logo_lines = (logo_height + vc->vc_font.height - 1) /
@@ -930,7 +933,7 @@ static void fbcon_init(struct vc_data *vc, int init)
}
if (p->userfont)
charcnt = FNTCHARCNT(p->fontdata);
vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
if (charcnt == 256) {
vc->vc_hi_font_mask = 0;
@@ -1178,7 +1181,12 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
if (p->userfont)
charcnt = FNTCHARCNT(p->fontdata);
vc->vc_can_do_color = (fb_get_color_depth(var) != 1);
var->activate = FB_ACTIVATE_NOW;
info->var.activate = var->activate;
info->var.yoffset = info->var.xoffset = 0;
fb_set_var(info, var);
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
if (charcnt == 256) {
vc->vc_hi_font_mask = 0;
@@ -1967,7 +1975,7 @@ static int fbcon_switch(struct vc_data *vc)
set_blitting_type(vc, info, p);
((struct fbcon_ops *)info->fbcon_par)->cursor_reset = 1;
vc->vc_can_do_color = (fb_get_color_depth(&info->var) != 1);
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
updatescrollmode(p, info, vc);
@@ -2332,7 +2340,7 @@ static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
if (!CON_IS_VISIBLE(vc))
return 0;
depth = fb_get_color_depth(&info->var);
depth = fb_get_color_depth(&info->var, &info->fix);
if (depth > 3) {
for (i = j = 0; i < 16; i++) {
k = table[i];