AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-25 00:50:54 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

s3fb: fix Virge/VX

Browse Source 
Add memory size detection for Virge/VX and small delay in mode setting (same
as in X.org driver) to fix blank screen problem.

Also adjust DTPC position to fix garbled screen in some modes (tested that
this adjustment does not break other cards - at least Trio32, Trio64V+,
Trio64V2/DX, Virge, Virge/DX).

Tested on ELSA Winner 2000AVI/3D.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Ondrej Zary 2011-12-19 23:39:47 +01:00 committed by Florian Tobias Schandinat
parent 396fa99e0e
commit 66cde97da7
1 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/video/s3fb.c
View File

@ -727,7 +727,7 @@ static int s3fb_set_par(struct fb_info *info)
if (par->chip == CHIP_988_VIRGE_VX) {
vga_wcrt(par->state.vgabase, 0x50, 0x00);
vga_wcrt(par->state.vgabase, 0x67, 0x50);
msleep(10); /* screen remains blank sometimes without this */
vga_wcrt(par->state.vgabase, 0x63, (mode <= 2) ? 0x90 : 0x09);
vga_wcrt(par->state.vgabase, 0x66, 0x90);
}
@ -901,7 +901,8 @@ static int s3fb_set_par(struct fb_info *info)
/* Set Data Transfer Position */
hsstart = ((info->var.xres + info->var.right_margin) * hmul) / 8;
value = clamp((htotal + hsstart + 1) / 2, hsstart + 4, htotal + 1);
/* + 2 is needed for Virge/VX, does no harm on other cards */
value = clamp((htotal + hsstart + 1) / 2 + 2, hsstart + 4, htotal + 1);
svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value);
memset_io(info->screen_base, 0x00, screen_size);
@ -1216,6 +1217,31 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
info->screen_size = 2 << 20;
break;
}
} else if (par->chip == CHIP_988_VIRGE_VX) {
switch ((regval & 0x60) >> 5) {
case 0: /* 2MB */
info->screen_size = 2 << 20;
break;
case 1: /* 4MB */
info->screen_size = 4 << 20;
break;
case 2: /* 6MB */
info->screen_size = 6 << 20;
break;
case 3: /* 8MB */
info->screen_size = 8 << 20;
break;
}
/* off-screen memory */
regval = vga_rcrt(par->state.vgabase, 0x37);
switch ((regval & 0x60) >> 5) {
case 1: /* 4MB */
info->screen_size -= 4 << 20;
break;
case 2: /* 2MB */
info->screen_size -= 2 << 20;
break;
}
} else
info->screen_size = s3_memsizes[regval >> 5] << 10;
info->fix.smem_len = info->screen_size;