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matroxfb: color setting fixes

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- the pseudo_palette is only 16 elements long.
- do not write to the pseudo_palette if regno (array index) is more than 15
- remove code that writes to the 17th entry of the pseudo_palette

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Acked-by: Petr Vandrovec <vandrove@vc.cvut.cz>
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 2007-07-17 04:05:45 -07:00 committed by Linus Torvalds
parent 000d5335c6
commit 08a498de79
5 changed files with 8 additions and 15 deletions
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9
drivers/video/matrox/matroxfb_accel.c
View file

@ -145,13 +145,10 @@ void matrox_cfbX_init(WPMINFO2) {
ACCESS_FBINFO(fbops).fb_imageblit = matroxfb_imageblit;
}
break;
case 16: if (ACCESS_FBINFO(fbcon).var.green.length == 5) {
case 16: if (ACCESS_FBINFO(fbcon).var.green.length == 5)
maccess = 0xC0000001;
ACCESS_FBINFO(cmap[16]) = 0x7FFF7FFF;
} else {
else
maccess = 0x40000001;
ACCESS_FBINFO(cmap[16]) = 0xFFFFFFFF;
}
mopmode = M_OPMODE_16BPP;
if (accel) {
ACCESS_FBINFO(fbops).fb_copyarea = matroxfb_copyarea;
@ -161,7 +158,6 @@ void matrox_cfbX_init(WPMINFO2) {
break;
case 24: maccess = 0x00000003;
mopmode = M_OPMODE_24BPP;
ACCESS_FBINFO(cmap[16]) = 0xFFFFFFFF;
if (accel) {
ACCESS_FBINFO(fbops).fb_copyarea = matroxfb_copyarea;
ACCESS_FBINFO(fbops).fb_fillrect = matroxfb_fillrect;
@ -170,7 +166,6 @@ void matrox_cfbX_init(WPMINFO2) {
break;
case 32: maccess = 0x00000002;
mopmode = M_OPMODE_32BPP;
ACCESS_FBINFO(cmap[16]) = 0xFFFFFFFF;
if (accel) {
ACCESS_FBINFO(fbops).fb_copyarea = matroxfb_copyarea;
ACCESS_FBINFO(fbops).fb_fillrect = matroxfb_fillrect;

4
drivers/video/matrox/matroxfb_base.c
View file

@ -679,6 +679,8 @@ static int matroxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
mga_outb(M_DAC_VAL, blue);
break;
case 16:
if (regno >= 16)
break;
{
u_int16_t col =
(red << ACCESS_FBINFO(fbcon).var.red.offset) |
@ -690,6 +692,8 @@ static int matroxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
break;
case 24:
case 32:
if (regno >= 16)
break;
ACCESS_FBINFO(cmap[regno]) =
(red << ACCESS_FBINFO(fbcon).var.red.offset) |
(green << ACCESS_FBINFO(fbcon).var.green.offset) |

2
drivers/video/matrox/matroxfb_base.h
View file

@ -518,7 +518,7 @@ struct matrox_fb_info {
dll:1;
} memory;
} values;
u_int32_t cmap[17];
u_int32_t cmap[16];
};
#define info2minfo(info) container_of(info, struct matrox_fb_info, fbcon)

6
drivers/video/matrox/matroxfb_crtc2.c
View file

@ -163,11 +163,6 @@ static void matroxfb_dh_disable(struct matroxfb_dh_fb_info* m2info) {
ACCESS_FBINFO(hw).crtc2.ctl = 0x00000004;
}
static void matroxfb_dh_cfbX_init(struct matroxfb_dh_fb_info* m2info) {
/* no acceleration for secondary head... */
m2info->cmap[16] = 0xFFFFFFFF;
}
static void matroxfb_dh_pan_var(struct matroxfb_dh_fb_info* m2info,
struct fb_var_screeninfo* var) {
unsigned int pos;
@ -385,7 +380,6 @@ static int matroxfb_dh_set_par(struct fb_info* info) {
}
}
up_read(&ACCESS_FBINFO(altout).lock);
matroxfb_dh_cfbX_init(m2info);
}
m2info->initialized = 1;
return 0;

2
drivers/video/matrox/matroxfb_crtc2.h
View file

@ -28,7 +28,7 @@ struct matroxfb_dh_fb_info {
unsigned int interlaced:1;
u_int32_t cmap[17];
u_int32_t cmap[16];
};
#endif /* __MATROXFB_CRTC2_H__ */