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/* $XFree86: xc/programs/Xserver/hw/xfree86/ddc/interpret_edid.c,v 1.7 2000/04/17 16:29:55 eich Exp $ */
/* interpret_edid.c: interpret a primary EDID block
*
* Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE>
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "misc.h"
#include "xf86.h"
#include "xf86_OSproc.h"
#define _PARSE_EDID_
#include "xf86DDC.h"
#include <string.h>
static void get_vendor_section(Uchar*, struct vendor *);
static void get_version_section(Uchar*, struct edid_version *);
static void get_display_section(Uchar*, struct disp_features *,
struct edid_version *);
static void get_established_timing_section(Uchar*, struct established_timings *);
static void get_std_timing_section(Uchar*, struct std_timings *,
struct edid_version *);
static void get_dt_md_section(Uchar *, struct edid_version *,
struct detailed_monitor_section *det_mon);
static void copy_string(Uchar *, Uchar *);
static void get_dst_timing_section(Uchar *, struct std_timings *,
struct edid_version *);
static void get_monitor_ranges(Uchar *, struct monitor_ranges *);
static void get_whitepoint_section(Uchar *, struct whitePoints *);
static void get_detailed_timing_section(Uchar*, struct detailed_timings *);
static Bool validate_version(int scrnIndex, struct edid_version *);
xf86MonPtr
xf86InterpretEDID(int scrnIndex, Uchar *block)
{
xf86MonPtr m;
if (!block) return NULL;
if (! (m = xnfcalloc(sizeof(xf86Monitor),1))) return NULL;
m->scrnIndex = scrnIndex;
m->rawData = block;
get_vendor_section(SECTION(VENDOR_SECTION,block),&m->vendor);
get_version_section(SECTION(VERSION_SECTION,block),&m->ver);
if (!validate_version(scrnIndex, &m->ver)) goto error;
get_display_section(SECTION(DISPLAY_SECTION,block),&m->features,
&m->ver);
get_established_timing_section(SECTION(ESTABLISHED_TIMING_SECTION,block),
&m->timings1);
get_std_timing_section(SECTION(STD_TIMING_SECTION,block),m->timings2,
&m->ver);
get_dt_md_section(SECTION(DET_TIMING_SECTION,block),&m->ver, m->det_mon);
m->no_sections = (int)*(char *)SECTION(NO_EDID,block);
return (m);
error:
xfree(m);
return NULL;
}
static void
get_vendor_section(Uchar *c, struct vendor *r)
{
r->name[0] = L1;
r->name[1] = L2;
r->name[2] = L3;
r->name[3] = '\0';
r->prod_id = PROD_ID;
r->serial = SERIAL_NO;
r->week = WEEK;
r->year = YEAR;
}
static void
get_version_section(Uchar *c, struct edid_version *r)
{
r->version = VERSION;
r->revision = REVISION;
}
static void
get_display_section(Uchar *c, struct disp_features *r,
struct edid_version *v)
{
r->input_type = INPUT_TYPE;
if (!DIGITAL(r->input_type)) {
r->input_voltage = INPUT_VOLTAGE;
r->input_setup = SETUP;
r->input_sync = SYNC;
} else if (v->version > 1 || v->revision > 2)
r->input_dfp = DFP;
r->hsize = HSIZE_MAX;
r->vsize = VSIZE_MAX;
r->gamma = GAMMA;
r->dpms = DPMS;
r->display_type = DISPLAY_TYPE;
r->msc = MSC;
r->redx = REDX;
r->redy = REDY;
r->greenx = GREENX;
r->greeny = GREENY;
r->bluex = BLUEX;
r->bluey = BLUEY;
r->whitex = WHITEX;
r->whitey = WHITEY;
}
static void
get_established_timing_section(Uchar *c, struct established_timings *r)
{
r->t1 = T1;
r->t2 = T2;
r->t_manu = T_MANU;
}
static void
get_std_timing_section(Uchar *c, struct std_timings *r,
struct edid_version *v)
{
int i;
for (i=0;i<STD_TIMINGS;i++){
if (VALID_TIMING) {
r[i].hsize = HSIZE1;
VSIZE1(r[i].vsize);
r[i].refresh = REFRESH_R;
r[i].id = STD_TIMING_ID;
} else {
r[i].hsize = r[i].vsize = r[i].refresh = r[i].id = 0;
}
NEXT_STD_TIMING;
}
}
static void
get_dt_md_section(Uchar *c, struct edid_version *ver,
struct detailed_monitor_section *det_mon)
{
int i;
for (i=0;i<DET_TIMINGS;i++) {
if (ver->version == 1 && ver->revision >= 1 && IS_MONITOR_DESC) {
switch (MONITOR_DESC_TYPE) {
case SERIAL_NUMBER:
det_mon[i].type = DS_SERIAL;
copy_string(c,det_mon[i].section.serial);
break;
case ASCII_STR:
det_mon[i].type = DS_ASCII_STR;
copy_string(c,det_mon[i].section.ascii_data);
break;
case MONITOR_RANGES:
det_mon[i].type = DS_RANGES;
get_monitor_ranges(c,&det_mon[i].section.ranges);
break;
case MONITOR_NAME:
det_mon[i].type = DS_NAME;
copy_string(c,det_mon[i].section.name);
break;
case ADD_COLOR_POINT:
det_mon[i].type = DS_WHITE_P;
get_whitepoint_section(c,det_mon[i].section.wp);
break;
case ADD_STD_TIMINGS:
det_mon[i].type = DS_STD_TIMINGS;
get_dst_timing_section(c,det_mon[i].section.std_t, ver);
break;
case ADD_DUMMY:
det_mon[i].type = DS_DUMMY;
break;
default:
det_mon[i].type = DS_UNKOWN;
break;
}
} else {
det_mon[i].type = DT;
get_detailed_timing_section(c,&det_mon[i].section.d_timings);
}
NEXT_DT_MD_SECTION;
}
}
static void
copy_string(Uchar *c, Uchar *s)
{
int i;
c = c + 5;
for (i = 0; (i < 13 && *c != 0x0A); i++)
*(s++) = *(c++);
*s = 0;
while (i-- && (*--s == 0x20)) *s = 0;
}
static void
get_dst_timing_section(Uchar *c, struct std_timings *t,
struct edid_version *v)
{
int j;
c = c + 5;
for (j = 0; j < 5; j++) {
t[j].hsize = HSIZE1;
VSIZE1(t[j].vsize);
t[j].refresh = REFRESH_R;
t[j].id = STD_TIMING_ID;
NEXT_STD_TIMING;
}
}
static void
get_monitor_ranges(Uchar *c, struct monitor_ranges *r)
{
r->min_v = MIN_V;
r->max_v = MAX_V;
r->min_h = MIN_H;
r->max_h = MAX_H;
r->max_clock = 0;
if(MAX_CLOCK != 0xff) /* is specified? */
r->max_clock = MAX_CLOCK * 10;
if (HAVE_2ND_GTF) {
r->gtf_2nd_f = F_2ND_GTF;
r->gtf_2nd_c = C_2ND_GTF;
r->gtf_2nd_m = M_2ND_GTF;
r->gtf_2nd_k = K_2ND_GTF;
r->gtf_2nd_j = J_2ND_GTF;
} else
r->gtf_2nd_f = 0;
}
static void
get_whitepoint_section(Uchar *c, struct whitePoints *wp)
{
wp[1].white_x = WHITEX1;
wp[1].white_y = WHITEY1;
wp[2].white_x = WHITEX2;
wp[2].white_y = WHITEY2;
wp[1].index = WHITE_INDEX1;
wp[2].index = WHITE_INDEX2;
wp[1].white_gamma = WHITE_GAMMA1;
wp[2].white_gamma = WHITE_GAMMA2;
}
static void
get_detailed_timing_section(Uchar *c, struct detailed_timings *r)
{
r->clock = PIXEL_CLOCK;
r->h_active = H_ACTIVE;
r->h_blanking = H_BLANK;
r->v_active = V_ACTIVE;
r->v_blanking = V_BLANK;
r->h_sync_off = H_SYNC_OFF;
r->h_sync_width = H_SYNC_WIDTH;
r->v_sync_off = V_SYNC_OFF;
r->v_sync_width = V_SYNC_WIDTH;
r->h_size = H_SIZE;
r->v_size = V_SIZE;
r->h_border = H_BORDER;
r->v_border = V_BORDER;
r->interlaced = INTERLACED;
r->stereo = STEREO;
r->stereo_1 = STEREO1;
r->sync = SYNC_T;
r->misc = MISC;
}
static Bool
validate_version(int scrnIndex, struct edid_version *r)
{
if (r->version != 1)
return FALSE;
if (r->revision > 3) {
xf86DrvMsg(scrnIndex, X_ERROR,"EDID Version 1.%i not yet supported\n",
r->revision);
return FALSE;
}
return TRUE;
}
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