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/* -*- c-basic-offset: 4 -*- */
#define DEBUG_VERB 2
/*
* Copyright © 2002 David Dawes
* Copyright © 2006 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of the author(s) shall
* not be used in advertising or otherwise to promote the sale, use or other
* dealings in this Software without prior written authorization from
* the author(s).
*
* Authors: David Dawes <dawes@xfree86.org>
* Eric Anholt <eric.anholt@intel.com>
*
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/vbe/vbeModes.c,v 1.6 2002/11/02 01:38:25 dawes Exp $
*/
/*
* Modified by Alan Hourihane <alanh@tungstengraphics.com>
* to support extended BIOS modes for the Intel chipsets
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include "xf86.h"
#include "xf86DDC.h"
#include "X11/Xatom.h"
#include "i830.h"
#include "i830_display.h"
#include "i830_xf86Modes.h"
#include <randrstr.h>
#define DEBUG_REPROBE 1
#ifdef RANDR_12_INTERFACE
#define EDID_ATOM_NAME "EDID_DATA"
static void
i830_ddc_set_edid_property(xf86OutputPtr output, void *data, int data_len)
{
Atom edid_atom = MakeAtom(EDID_ATOM_NAME, sizeof(EDID_ATOM_NAME), TRUE);
/* This may get called before the RandR resources have been created */
if (output->randr_output == NULL)
return;
if (data_len != 0) {
RRChangeOutputProperty(output->randr_output, edid_atom, XA_INTEGER, 8,
PropModeReplace, data_len, data, FALSE);
} else {
RRDeleteOutputProperty(output->randr_output, edid_atom);
}
}
#endif
/**
* Generic get_modes function using DDC, used by many outputs.
*/
DisplayModePtr
i830_ddc_get_modes(xf86OutputPtr output)
{
ScrnInfoPtr pScrn = output->scrn;
I830OutputPrivatePtr intel_output = output->driver_private;
xf86MonPtr ddc_mon;
DisplayModePtr ddc_modes, mode;
int i;
ddc_mon = xf86DoEDID_DDC2(pScrn->scrnIndex, intel_output->pDDCBus);
if (ddc_mon == NULL) {
#ifdef RANDR_12_INTERFACE
i830_ddc_set_edid_property(output, NULL, 0);
#endif
return NULL;
}
if (output->MonInfo != NULL)
xfree(output->MonInfo);
output->MonInfo = ddc_mon;
#ifdef RANDR_12_INTERFACE
if (output->MonInfo->ver.version == 1) {
i830_ddc_set_edid_property(output, ddc_mon->rawData, 128);
} else if (output->MonInfo->ver.version == 2) {
i830_ddc_set_edid_property(output, ddc_mon->rawData, 256);
} else {
i830_ddc_set_edid_property(output, NULL, 0);
}
#endif
/* Debug info for now, at least */
xf86DrvMsg(pScrn->scrnIndex, X_INFO, "EDID for output %s\n", output->name);
xf86PrintEDID(output->MonInfo);
ddc_modes = xf86DDCGetModes(pScrn->scrnIndex, ddc_mon);
/* Strip out any modes that can't be supported on this output. */
for (mode = ddc_modes; mode != NULL; mode = mode->next) {
int status = (*output->funcs->mode_valid)(output, mode);
if (status != MODE_OK)
mode->status = status;
}
i830xf86PruneInvalidModes(pScrn, &ddc_modes, TRUE);
/* Pull out a phyiscal size from a detailed timing if available. */
for (i = 0; i < 4; i++) {
if (ddc_mon->det_mon[i].type == DT &&
ddc_mon->det_mon[i].section.d_timings.h_size != 0 &&
ddc_mon->det_mon[i].section.d_timings.v_size != 0)
{
output->mm_width = ddc_mon->det_mon[i].section.d_timings.h_size;
output->mm_height = ddc_mon->det_mon[i].section.d_timings.v_size;
break;
}
}
return ddc_modes;
}
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