status_t
Rage128_SetDisplayMode(const DisplayModeEx& mode)
{
// The code to actually configure the display.
// All the error checking must be done in ProposeDisplayMode(),
// and assume that the mode values we get here are acceptable.
DisplayParams params; // where computed parameters are saved
if (gInfo.sharedInfo->displayType == MT_VGA) {
// Chip is connected to a monitor via a VGA connector.
if ( ! CalculateCrtcRegisters(mode, params))
return B_BAD_VALUE;
if ( ! CalculatePLLRegisters(mode, params))
return B_BAD_VALUE;
if ( ! CalculateDDARegisters(mode, params))
return B_BAD_VALUE;
SetRegisters(params);
} else {
// Chip is connected to a laptop LCD monitor; or via a DVI interface.
uint16 vesaMode = GetVesaModeNumber(display_mode(mode), mode.bitsPerPixel);
if (vesaMode == 0)
return B_BAD_VALUE;
if (ioctl(gInfo.deviceFileDesc, ATI_SET_VESA_DISPLAY_MODE,
&vesaMode, sizeof(vesaMode)) != B_OK)
return B_ERROR;
}
Rage128_AdjustFrame(mode);
// Initialize the palette so that color depths > 8 bits/pixel will display
// the correct colors.
// Select primary monitor and enable 8-bit color.
OUTREGM(R128_DAC_CNTL, R128_DAC_8BIT_EN,
R128_DAC_PALETTE_ACC_CTL | R128_DAC_8BIT_EN);
OUTREG8(R128_PALETTE_INDEX, 0); // set first color index
for (int i = 0; i < 256; i++)
OUTREG(R128_PALETTE_DATA, (i << 16) | (i << 8) | i );
Rage128_EngineInit(mode);
return B_OK;
}
status_t
Mach64_SetDisplayMode(const DisplayModeEx& mode)
{
// The code to actually configure the display.
// All the error checking must be done in ProposeDisplayMode(),
// and assume that the mode values we get here are acceptable.
SharedInfo& si = *gInfo.sharedInfo;
if (si.displayType == MT_VGA) {
// Chip is connected to a monitor via a VGA connector.
SetCrtcRegisters(mode);
SetClockRegisters(mode);
if (si.chipType >= MACH64_264VTB)
SetDSPRegisters(mode);
} else {
// Chip is connected to a laptop LCD monitor; or via a DVI interface.
uint16 vesaMode = GetVesaModeNumber(display_mode(mode), mode.bitsPerPixel);
if (vesaMode == 0)
return B_BAD_VALUE;
status_t status = ioctl(gInfo.deviceFileDesc, ATI_SET_VESA_DISPLAY_MODE,
&vesaMode, sizeof(vesaMode));
if (status != B_OK)
return status;
}
Mach64_AdjustFrame(mode);
// Initialize the palette so that the various color depths will display
// the correct colors.
OUTREGM(DAC_CNTL, DAC_8BIT_EN, DAC_8BIT_EN);
OUTREG8(DAC_MASK, 0xff);
OUTREG8(DAC_W_INDEX, 0); // initial color index
for (int i = 0; i < 256; i++) {
OUTREG8(DAC_DATA, i);
OUTREG8(DAC_DATA, i);
OUTREG8(DAC_DATA, i);
}
Mach64_EngineInit(mode);
return B_OK;
}
