aboutsummaryrefslogtreecommitdiff
path: root/drivers/video/tridentfb.c
diff options
context:
space:
mode:
authorKrzysztof Helt <krzysztof.h1@wp.pl>2008-07-23 21:30:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:35 -0700
commit0e73a47f094a919e2edeaa88e840cd0400adc423 (patch)
tree4eeb0ac9c9d0e41ea42aa5dfb8fb3873a99ef271 /drivers/video/tridentfb.c
parent3876ae8beb2c7c19e21279b9603b1244fcd744dd (diff)
downloadlinux-0e73a47f094a919e2edeaa88e840cd0400adc423.tar.gz
tridentfb: improved register values on TGUI 9680
Improved values for some registers after Xorg Trident driver. The main problem was that values set by BIOS have been ignored. This patch completely remove random pixels ("snow") on the TGUI 9680 and 9440 (not supported yet by the driver). It does not help with the "snow" on 3DImage and Blade3D cards. There is also small improvement in timing calculations (hblank start and vblank start) Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/tridentfb.c')
-rw-r--r--drivers/video/tridentfb.c29
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c
index e79788a778f..9668be881fe 100644
--- a/drivers/video/tridentfb.c
+++ b/drivers/video/tridentfb.c
@@ -87,7 +87,17 @@ MODULE_PARM_DESC(crt, "Define if CRT is connected");
static int is_oldclock(int id)
{
- return (id == TGUI9660);
+ return (id == TGUI9660) ||
+ (id == CYBER9320);
+}
+
+static int is_oldprotect(int id)
+{
+ return (id == TGUI9660) ||
+ (id == PROVIDIA9685) ||
+ (id == CYBER9320) ||
+ (id == CYBER9382) ||
+ (id == CYBER9385);
}
static int is_blade(int id)
@@ -143,6 +153,7 @@ static int iscyber(int id)
case CYBER9320:
case TGUI9660:
+ case PROVIDIA9685:
case IMAGE975:
case IMAGE985:
case BLADE3D:
@@ -905,14 +916,14 @@ static int tridentfb_set_par(struct fb_info *info)
hsyncend = (var->xres + var->right_margin + var->hsync_len) / 8 - 1;
htotal = (var->xres + var->left_margin + var->right_margin +
var->hsync_len) / 8 - 5;
- hblankstart = hdispend + 2;
+ hblankstart = hdispend + 1;
hblankend = htotal + 3;
vdispend = var->yres - 1;
vsyncstart = var->yres + var->lower_margin;
vsyncend = vsyncstart + var->vsync_len;
vtotal = var->upper_margin + vsyncend - 2;
- vblankstart = vdispend + 2;
+ vblankstart = vdispend + 1;
vblankend = vtotal;
crtc_unlock(par);
@@ -1020,15 +1031,18 @@ static int tridentfb_set_par(struct fb_info *info)
write3X4(par, PixelBusReg, tmp);
- tmp = 0x10;
+ tmp = read3X4(par, DRAMControl);
+ if (!is_oldprotect(par->chip_id))
+ tmp |= 0x10;
if (iscyber(par->chip_id))
tmp |= 0x20;
write3X4(par, DRAMControl, tmp); /* both IO, linear enable */
write3X4(par, InterfaceSel, read3X4(par, InterfaceSel) | 0x40);
- write3X4(par, Performance, 0x92);
+ if (!is_xp(par->chip_id))
+ write3X4(par, Performance, read3X4(par, Performance) | 0x10);
/* MMIO & PCI read and write burst enable */
- write3X4(par, PCIReg, 0x07);
+ write3X4(par, PCIReg, read3X4(par, PCIReg) | 0x06);
/* convert from picoseconds to kHz */
vclk = PICOS2KHZ(info->var.pixclock);
@@ -1230,6 +1244,9 @@ static int __devinit trident_pci_probe(struct pci_dev *dev,
revision = vga_io_rseq(RevisionID);
switch (revision) {
+ case 0x21:
+ chip_id = PROVIDIA9685;
+ break;
case 0x22:
case 0x23:
chip_id = CYBER9397;