static void
init(Vga* vga, Ctlr* ctlr)
{
ulong grade;
char *p;
/*
* Work out the part speed-grade from name. Name can have,
* e.g. '-135' on the end for 135MHz part.
*/
grade = 110000000;
if(p = strrchr(ctlr->name, '-'))
grade = strtoul(p+1, 0, 0) * 1000000;
/*
* If we don't already have a desired pclk,
* take it from the mode.
* Check it's within range.
*/
if(vga->f[0] == 0)
vga->f[0] = vga->mode->frequency;
if(vga->f[0] > grade)
error("%s: invalid pclk - %ld\n", ctlr->name, vga->f[0]);
/*
* Determine whether to use clock-doubler or not.
*/
if((ctlr->flag & Uclk2) == 0 && vga->mode->z == 8 && vga->f[0] > 85000000)
resyncinit(vga, ctlr, Uclk2, 0);
ctlr->flag |= Finit;
}
static void
init(Vga* vga, Ctlr* ctlr)
{
char *p, *val;
Mode *mode;
ulong pclk, x;
int id, noclockset, width;
id = (vga->crt[0x2D]<<8)|vga->crt[0x2E];
mode = vga->mode;
/*
* double 16bpp horizontal timings on ViRGE/[DG]X
* leaves overflow bit-fiddling to s3generic.init
*/
if((id == 0x8A01) && ((mode->z+7)/8 == 2)){
resyncinit(vga, ctlr, Uenhanced, 0);
vga->crt[0x00] = ((mode->ht * 2) >> 3) - 5;
vga->crt[0x01] = ((mode->x * 2) >> 3) - 1;
vga->crt[0x02] = ((mode->shb * 2) >> 3) - 1;
x = (mode->ehb * 2) >> 3;
vga->crt[0x03] = 0x80 | (x & 0x1F);
vga->crt[0x04] = (mode->shs * 2) >> 3;
vga->crt[0x05] = ((mode->ehs * 2) >> 3) & 0x1F;
if(x & 0x20)
vga->crt[0x05] |= 0x80;
}
static void
init(Vga* vga, Ctlr* ctlr)
{
Mode *mode;
uint32_t x;
int sid, dbl, bpp, divide;
char *val;
if(vga->mode->z > 8)
error("depth %d not supported\n", vga->mode->z);
mode = vga->mode;
if(vga->ramdac && (vga->ramdac->flag & Uclk2)){
resyncinit(vga, ctlr, Uenhanced, 0);
vga->crt[0x00] = ((mode->ht/2)>>3)-5;
vga->crt[0x01] = ((mode->x/2)>>3)-1;
vga->crt[0x02] = ((mode->shb/2)>>3)-1;
x = (mode->ehb/2)>>3;
vga->crt[0x03] = 0x80|(x & 0x1F);
vga->crt[0x04] = (mode->shs/2)>>3;
vga->crt[0x05] = ((mode->ehs/2)>>3) & 0x1F;
if(x & 0x20)
vga->crt[0x05] |= 0x80;
vga->crt[0x13] = mode->x/8;
}
static void
init(Vga* vga, Ctlr* ctlr)
{
ulong grade, pclk;
char *p;
/*
* Part comes in -170, -130 and -110MHz speed-grades.
* In 8-bit mode the max. PCLK is 80MHz for the -110 part
* and 110MHz for the others. In 2x8-bit mode, the max.
* PCLK is the speed-grade, using the 2x doubler.
* We can use mode 2 (2x8-bit, internal clock doubler)
* if connected to a suitable graphics chip, e.g. the
* S3 Vision864.
* Work out the part speed-grade from name. Name can have,
* e.g. '-135' on the end for 135MHz part.
*/
grade = 110000000;
if(p = strrchr(ctlr->name, '-'))
grade = strtoul(p+1, 0, 0) * 1000000;
if(vga->ctlr && ((vga->ctlr->flag & Hpclk2x8) && vga->mode->z == 8))
pclk = grade;
else{
if(grade == 110000000)
pclk = 80000000;
else
pclk = 110000000;
}
/*
* If we don't already have a desired pclk,
* take it from the mode.
* Check it's within range.
*/
if(vga->f[0] == 0)
vga->f[0] = vga->mode->frequency;
/*
* Determine whether to use 2x8-bit mode or not.
* If yes and the clock has already been initialised,
* initialise it again.
*/
if(vga->ctlr && (vga->ctlr->flag & Hpclk2x8) && vga->mode->z == 8 && vga->f[0] > 80000000){
vga->f[0] /= 2;
resyncinit(vga, ctlr, Upclk2x8, 0);
}
if(vga->f[0] > pclk)
error("%s: invalid pclk - %ld\n", ctlr->name, vga->f[0]);
ctlr->flag |= Finit;
}