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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atirgb514.c,v 1.4 2003/01/01 19:16:34 tsi Exp $ */
/*
* Copyright 2001 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of Marc Aurele La France not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Marc Aurele La France makes no representations
* about the suitability of this software for any purpose. It is provided
* "as-is" without express or implied warranty.
*
* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "ati.h"
#include "aticrtc.h"
#include "atimach64io.h"
#include "atirgb514.h"
/*
* ATIRGB514PreInit --
*
* This function fills in the IBM RGB 514 portion of an ATIHWRec that is common
* to all video modes generated by the server.
*/
void
ATIRGB514PreInit
(
ATIPtr pATI,
ATIHWPtr pATIHW
)
{
/* Get a work copy of IBM RGB 514 registers */
ATIRGB514Save(pATI, pATIHW);
/* Miscellaneous Clock Control */
pATIHW->ibmrgb514[0x0002U] = 0x01U;
/* Sync Control */
pATIHW->ibmrgb514[0x0003U] &= ~0x80U;
/* Horizontal Sync Control */
pATIHW->ibmrgb514[0x0004U] = 0x00U;
/* Power Management */
pATIHW->ibmrgb514[0x0005U] = 0x00U;
/* DAC Operation */
pATIHW->ibmrgb514[0x0006U] &= ~0x04U;
/* Palette Control */
pATIHW->ibmrgb514[0x0007U] = 0x00U;
/* PLL Control */
pATIHW->ibmrgb514[0x0010U] = 0x01U;
/* Cursor control */
pATIHW->ibmrgb514[0x0030U] &= ~0x03U; /* For now */
/* Border (i.e. overscan) */
pATIHW->ibmrgb514[0x0060U] = 0x00U;
pATIHW->ibmrgb514[0x0061U] = 0x00U;
pATIHW->ibmrgb514[0x0062U] = 0x00U;
/* Miscellaneous Control */
pATIHW->ibmrgb514[0x0070U] &= ~0x20U;
pATIHW->ibmrgb514[0x0071U] = 0x41U; /* See workaround in ATIRGB514Set() */
#ifndef AVOID_CPIO
if (pATIHW->crtc == ATI_CRTC_VGA)
{
/* Pixel Format */
pATIHW->ibmrgb514[0x000AU] = 0x03U;
/* Miscellaneous Control */
pATIHW->ibmrgb514[0x0070U] |= 0x40U;
/* VRAM Mask */
pATIHW->ibmrgb514[0x0090U] = 0x03U;
}
else
#endif /* AVOID_CPIO */
{
/* Miscellaneous Control */
pATIHW->ibmrgb514[0x0070U] &= ~0x40U;
/* VRAM Mask */
pATIHW->ibmrgb514[0x0090U] = 0x00U;
pATIHW->ibmrgb514[0x0091U] = 0x00U;
/* Pixel Format */
switch (pATI->depth)
{
case 8:
pATIHW->ibmrgb514[0x000AU] = 0x03U;
pATIHW->ibmrgb514[0x000BU] = 0x00U;
break;
case 15:
pATIHW->ibmrgb514[0x000AU] = 0x04U;
pATIHW->ibmrgb514[0x000CU] = 0xC4U;
break;
case 16:
pATIHW->ibmrgb514[0x000AU] = 0x04U;
pATIHW->ibmrgb514[0x000CU] = 0xC6U;
break;
case 24:
if (pATI->bitsPerPixel == 24)
{
pATIHW->ibmrgb514[0x000AU] = 0x05U;
pATIHW->ibmrgb514[0x000DU] = 0x01U;
}
else
{
pATIHW->ibmrgb514[0x000AU] = 0x06U;
pATIHW->ibmrgb514[0x000EU] = 0x03U;
}
break;
default:
break;
}
}
if (pATI->rgbBits == 8)
pATIHW->ibmrgb514[0x0071U] |= 0x04U;
}
/*
* ATIRGB514Save --
*
* This function saves IBM RGB514 related data into an ATIHWRec.
*/
void
ATIRGB514Save
(
ATIPtr pATI,
ATIHWPtr pATIHW
)
{
CARD32 crtc_gen_cntl, dac_cntl;
CARD8 index_lo, index_hi, index_ctl;
int Index;
/* Temporarily switch to Mach64 CRTC */
crtc_gen_cntl = inr(CRTC_GEN_CNTL);
if (!(crtc_gen_cntl & CRTC_EXT_DISP_EN))
outr(CRTC_GEN_CNTL, crtc_gen_cntl | CRTC_EXT_DISP_EN);
/* Temporarily switch to IBM RGB 514 registers */
dac_cntl = inr(DAC_CNTL) & ~(DAC_EXT_SEL_RS2 | DAC_EXT_SEL_RS3);
outr(DAC_CNTL, dac_cntl | DAC_EXT_SEL_RS2);
index_lo = in8(M64_DAC_WRITE);
index_hi = in8(M64_DAC_DATA);
index_ctl = in8(M64_DAC_READ);
out8(M64_DAC_WRITE, 0x00U);
out8(M64_DAC_DATA, 0x00U);
out8(M64_DAC_READ, 0x01U); /* Auto-increment */
/* Save IBM RGB 514 registers */
for (Index = 0; Index < NumberOf(pATIHW->ibmrgb514); Index++)
{
/* Need to rewrite the index every so often... */
if ((Index == 0x0100) || (Index == 0x0500))
{
out8(M64_DAC_WRITE, 0);
out8(M64_DAC_DATA, Index >> 8);
}
pATIHW->ibmrgb514[Index] = in8(M64_DAC_MASK);
}
/* Restore registers */
out8(M64_DAC_WRITE, index_lo);
out8(M64_DAC_DATA, index_hi);
out8(M64_DAC_READ, index_ctl);
outr(DAC_CNTL, dac_cntl);
if (!(crtc_gen_cntl & CRTC_EXT_DISP_EN))
outr(CRTC_GEN_CNTL, crtc_gen_cntl);
}
/*
* ATIRGB514Calculate --
*
* This function fills in the IBM RGB 514 portion of an ATIHWRec that is
* specific to a display mode. pATIHW->ibmrgb514 has already been
* initialised by a previous call to ATIRGB514PreInit().
*/
void
ATIRGB514Calculate
(
ATIPtr pATI,
ATIHWPtr pATIHW,
DisplayModePtr pMode
)
{
if (pATI->OptionCSync || (pMode->Flags & (V_CSYNC | V_PCSYNC)))
pATIHW->ibmrgb514[0x0006U] |= 0x08U;
else
pATIHW->ibmrgb514[0x0006U] &= ~0x08U;
if (pMode->Flags & V_INTERLACE)
pATIHW->ibmrgb514[0x0071U] |= 0x20U;
else
pATIHW->ibmrgb514[0x0071U] &= ~0x20U;
}
/*
* ATIRGB514Set --
*
* This function is called to set an IBM RGB514's registers.
*/
void
ATIRGB514Set
(
ATIPtr pATI,
ATIHWPtr pATIHW
)
{
CARD32 crtc_gen_cntl, dac_cntl;
CARD8 index_lo, index_hi, index_ctl;
int Index;
/* Temporarily switch to Mach64 CRTC */
crtc_gen_cntl = inr(CRTC_GEN_CNTL);
if (!(crtc_gen_cntl & CRTC_EXT_DISP_EN))
outr(CRTC_GEN_CNTL, crtc_gen_cntl | CRTC_EXT_DISP_EN);
/* Temporarily switch to IBM RGB 514 registers */
dac_cntl = inr(DAC_CNTL) & ~(DAC_EXT_SEL_RS2 | DAC_EXT_SEL_RS3);
outr(DAC_CNTL, dac_cntl | DAC_EXT_SEL_RS2);
index_lo = in8(M64_DAC_WRITE);
index_hi = in8(M64_DAC_DATA);
index_ctl = in8(M64_DAC_READ);
out8(M64_DAC_WRITE, 0x00U);
out8(M64_DAC_DATA, 0x00U);
out8(M64_DAC_READ, 0x01U); /* Auto-increment */
/* Load IBM RGB 514 registers */
for (Index = 0; Index < NumberOf(pATIHW->ibmrgb514); Index++)
out8(M64_DAC_MASK, pATIHW->ibmrgb514[Index]);
#ifndef AVOID_CPIO
/* Deal with documented anomaly */
if (pATIHW->crtc == ATI_CRTC_VGA)
{
/* Reset Miscellaneous Control 2 */
out8(M64_DAC_WRITE, 0x71U);
out8(M64_DAC_DATA, 0x00U);
out8(M64_DAC_MASK, pATIHW->ibmrgb514[0x0071U] & ~0x41U);
}
#endif /* AVOID_CPIO */
/* Restore registers */
out8(M64_DAC_WRITE, index_lo);
out8(M64_DAC_DATA, index_hi);
out8(M64_DAC_READ, index_ctl);
outr(DAC_CNTL, dac_cntl);
if (!(crtc_gen_cntl & CRTC_EXT_DISP_EN))
outr(CRTC_GEN_CNTL, crtc_gen_cntl);
}
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