438 lines
10 KiB
C
438 lines
10 KiB
C
/*
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* Copyright 2009 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software")
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* to deal in the software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* them Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTIBILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Adam Jackson <ajax@redhat.com>
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*/
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#include "xorg-config.h"
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#include "xf86.h"
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#include "xf86str.h"
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#include "edid.h"
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#include "xf86DDC.h"
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typedef void (*did_proc)(int scrnIndex, unsigned char *data, void *closure);
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#define DID_PRODUCT_ID 0x00
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#define DID_DISPLAY_PARAMETERS 0x01
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#define DID_COLOR_INFO 0x02
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#define DID_TIMING_1_DETAILED 0x03
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#define DID_TIMING_2_DETAILED 0x04
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#define DID_TIMING_3_SHORT 0x05
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#define DID_TIMING_4_DMT 0x06
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#define DID_TIMING_VESA 0x07
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#define DID_TIMING_CEA 0x08
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#define DID_TIMING_RANGE_LIMITS 0x09
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#define DID_PRODUCT_SERIAL 0x0A
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#define DID_ASCII_STRING 0x0B
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#define DID_DISPLAY_DEVICE 0x0C
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#define DID_POWER_SEQUENCING 0x0D
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#define DID_TRANSFER_INFO 0x0E
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#define DID_DISPLAY_INTERFACE 0x0F
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#define DID_STEREO 0x10
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#define DID_VENDOR 0x7F
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#define extract_le16(x, i) ((x[i+1] << 8) + (x[i]))
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#define extract_le24(x, i) ((x[i+2] << 16) + (x[i+1] << 8) + (x[i]))
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static DisplayModePtr
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modeCalloc(void)
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{
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return calloc(1, sizeof(DisplayModeRec));
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}
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/*
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* How awesome is it to have two detailed timing formats, neither of which
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* are compatible with the format in EDID? So awesome.
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*/
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static void
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didDetailedTiming1(int i, unsigned char *x, MonPtr mon)
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{
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DisplayModePtr m = modeCalloc();
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if (!m)
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return;
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m->Clock = extract_le24(x, 0);
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m->HDisplay = extract_le16(x, 4);
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m->HSyncStart = m->HDisplay + (extract_le16(x, 8) & 0x7f);
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m->HSyncEnd = m->HSyncStart + extract_le16(x, 10);
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m->HTotal = m->HDisplay + extract_le16(x, 6);
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m->Flags |= (x[9] & 0x80) ? V_PHSYNC : V_NHSYNC;
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m->VDisplay = extract_le16(x, 12);
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m->VSyncStart = m->VDisplay + (extract_le16(x, 16) & 0x7f);
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m->VSyncEnd = m->VSyncStart + extract_le16(x, 18);
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m->VTotal = m->VDisplay + extract_le16(x, 14);
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m->Flags |= (x[17] & 0x80) ? V_PVSYNC : V_NVSYNC;
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m->type = M_T_DRIVER;
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if (x[3] & 0x80)
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m->type |= M_T_PREFERRED;
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/* XXX double check handling of this */
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if (x[3] & 0x10)
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m->Flags |= V_INTERLACE;
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mon->Modes = xf86ModesAdd(mon->Modes, m);
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}
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/* XXX no sync bits. what to do? */
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static void
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didDetailedTiming2(int i, unsigned char *x, MonPtr mon)
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{
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DisplayModePtr mode = modeCalloc();
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if (!mode)
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return;
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mode->Clock = extract_le24(x, 0);
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/* horiz sizes are in character cells, not pixels, hence * 8 */
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mode->HDisplay = ((extract_le16(x, 4) & 0x01ff) + 1) * 8;
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mode->HSyncStart = mode->HDisplay + (((x[6] & 0xf0) >> 4) + 1) * 8;
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mode->HSyncEnd = mode->HSyncStart + ((x[6] & 0x0f) + 1) * 8;
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mode->HTotal = mode->HDisplay + ((x[5] >> 1) + 1) * 8;
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mode->VDisplay = extract_le16(x, 7) & 0x07ff;
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mode->VSyncStart = mode->VDisplay + (x[10] >> 4) + 1;
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mode->VSyncEnd = mode->VSyncStart + (x[10] & 0x0f) + 1;
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mode->VTotal = mode->VDisplay + x[9];
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mode->status = M_T_DRIVER;
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if (x[3] & 0x80)
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mode->status |= M_T_PREFERRED;
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/* XXX double check handling of this */
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if (x[3] & 0x10)
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mode->Flags |= V_INTERLACE;
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mon->Modes = xf86ModesAdd(mon->Modes, mode);
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}
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static void
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didShortTiming(int i, unsigned char *x, MonPtr mon)
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{
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DisplayModePtr m;
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int w, h, r;
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w = (x[1] + 1) * 8;
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switch (x[0] & 0x0f) {
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case 0:
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h = w;
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break;
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case 1:
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h = (w * 4) / 5;
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break;
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case 2:
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h = (w * 3) / 4;
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break;
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case 3:
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h = (w * 9) / 15;
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break;
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case 4:
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h = (w * 9) / 16;
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break;
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case 5:
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h = (w * 10) / 16;
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break;
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default:
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return;
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}
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r = (x[2] & 0x7f) + 1;
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m = xf86CVTMode(w, h, r, !!(x[0] & 0x10), !!(x[2] & 0x80));
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m->type = M_T_DRIVER;
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if (x[0] & 0x80)
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m->type |= M_T_PREFERRED;
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mon->Modes = xf86ModesAdd(mon->Modes, m);
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}
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static void
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didDMTTiming(int i, unsigned char *x, void *closure)
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{
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MonPtr mon = closure;
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mon->Modes = xf86ModesAdd(mon->Modes,
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xf86DuplicateMode(DMTModes + *x));
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}
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#define RB 1
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#define INT 2
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static const struct did_dmt {
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short w, h, r, f;
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} did_dmt[] = {
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/* byte 3 */
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{ 640, 350, 85, 0 },
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{ 640, 400, 85, 0 },
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{ 720, 400, 85, 0 },
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{ 640, 480, 60, 0 },
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{ 640, 480, 72, 0 },
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{ 640, 480, 75, 0 },
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{ 640, 480, 85, 0 },
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{ 800, 600, 56, 0 },
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/* byte 4 */
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{ 800, 600, 60, 0 },
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{ 800, 600, 72, 0 },
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{ 800, 600, 75, 0 },
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{ 800, 600, 85, 0 },
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{ 800, 600, 120, RB },
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{ 848, 480, 60, 0 },
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{ 1024, 768, 43, INT },
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{ 1024, 768, 60, 0 },
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/* byte 5 */
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{ 1024, 768, 70, 0 },
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{ 1024, 768, 75, 0 },
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{ 1024, 768, 85, 0 },
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{ 1024, 768, 120, RB },
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{ 1152, 864, 75, 0 },
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{ 1280, 768, 60, RB },
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{ 1280, 768, 60, 0 },
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{ 1280, 768, 75, 0 },
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/* byte 6 */
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{ 1280, 768, 85, 0 },
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{ 1280, 768, 120, RB },
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{ 1280, 800, 60, RB },
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{ 1280, 800, 60, 0 },
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{ 1280, 800, 75, 0 },
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{ 1280, 800, 85, 0 },
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{ 1280, 800, 120, RB },
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{ 1280, 960, 60, 0 },
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/* byte 7 */
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{ 1280, 960, 85, 0 },
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{ 1280, 960, 120, RB },
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{ 1280, 1024, 60, 0 },
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{ 1280, 1024, 75, 0 },
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{ 1280, 1024, 85, 0 },
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{ 1280, 1024, 120, RB },
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{ 1360, 768, 60, 0 },
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{ 1360, 768, 120, RB },
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/* byte 8 */
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{ 1400, 1050, 60, RB },
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{ 1400, 1050, 60, 0 },
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{ 1400, 1050, 75, 0 },
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{ 1400, 1050, 85, 0 },
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{ 1400, 1050, 120, RB },
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{ 1440, 900, 60, RB },
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{ 1440, 900, 60, 0 },
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{ 1440, 900, 75, 0 },
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/* byte 9 */
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{ 1440, 900, 85, 0 },
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{ 1440, 900, 120, RB },
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{ 1600, 1200, 60, 0 },
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{ 1600, 1200, 65, 0 },
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{ 1600, 1200, 70, 0 },
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{ 1600, 1200, 75, 0 },
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{ 1600, 1200, 85, 0 },
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{ 1600, 1200, 120, RB },
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/* byte a */
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{ 1680, 1050, 60, RB },
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{ 1680, 1050, 60, 0 },
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{ 1680, 1050, 75, 0 },
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{ 1680, 1050, 85, 0 },
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{ 1680, 1050, 120, RB },
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{ 1792, 1344, 60, 0 },
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{ 1792, 1344, 75, 0 },
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{ 1792, 1344, 120, RB },
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/* byte b */
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{ 1856, 1392, 60, 0 },
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{ 1856, 1392, 75, 0 },
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{ 1856, 1392, 120, RB },
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{ 1920, 1200, 60, RB },
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{ 1920, 1200, 60, 0 },
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{ 1920, 1200, 75, 0 },
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{ 1920, 1200, 85, 0 },
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{ 1920, 1200, 120, RB },
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/* byte c */
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{ 1920, 1440, 60, 0 },
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{ 1920, 1440, 75, 0 },
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{ 1920, 1440, 120, RB },
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{ 2560, 1600, 60, RB },
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{ 2560, 1600, 60, 0 },
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{ 2560, 1600, 75, 0 },
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{ 2560, 1600, 85, 0 },
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{ 2560, 1600, 120, RB },
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};
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static void
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didVesaTiming(int scrn, unsigned char *x, MonPtr mon)
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{
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int i, j;
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x += 3;
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for (i = 0; i < 10; i++)
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for (j = 0; j < 8; j++)
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if (x[i] & (1 << j)) {
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const struct did_dmt *d = &(did_dmt[i * 8 + j]);
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if (d->f == INT)
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continue;
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mon->Modes = xf86ModesAdd(mon->Modes,
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FindDMTMode(d->w, d->h, d->r,
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d->f == RB));
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}
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}
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static void
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handleDisplayIDBlock(int scrnIndex, unsigned char *x, void *closure)
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{
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MonPtr mon = closure;
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switch (x[0]) {
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case DID_DISPLAY_PARAMETERS:
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/* w/h are in decimillimeters */
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mon->widthmm = (extract_le16(x, 3) + 5) / 10;
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mon->heightmm = (extract_le16(x, 5) + 5) / 10;
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/* XXX pixel count, feature flags, gamma, aspect, color depth */
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break;
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case DID_TIMING_RANGE_LIMITS:
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{
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int n;
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mon->maxPixClock = max(mon->maxPixClock, extract_le24(x, 6) * 10);
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n = mon->nHsync++;
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if (n < MAX_HSYNC) {
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mon->hsync[n].lo = x[9];
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mon->hsync[n].hi = x[10];
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} else {
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n = MAX_HSYNC;
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}
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n = mon->nVrefresh++;
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if (n < MAX_VREFRESH) {
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mon->vrefresh[n].lo = x[13];
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mon->vrefresh[n].hi = x[14];
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} else {
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n = MAX_VREFRESH;
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}
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break;
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}
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case DID_TIMING_1_DETAILED:
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{
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int i;
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for (i = 0; i < x[2]; i += 20)
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didDetailedTiming1(scrnIndex, x + i + 3, mon);
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break;
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}
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case DID_TIMING_2_DETAILED:
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{
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int i;
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for (i = 0; i < x[2]; i += 11)
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didDetailedTiming2(scrnIndex, x + i + 3, mon);
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break;
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}
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case DID_TIMING_3_SHORT:
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{
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int i;
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for (i = 0; i < x[2]; i += 3)
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didShortTiming(scrnIndex, x + i + 3, mon);
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break;
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}
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case DID_TIMING_4_DMT:
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{
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int i;
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for (i = 0; i < x[2]; i++)
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didDMTTiming(scrnIndex, x + i + 3, mon);
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break;
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}
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case DID_TIMING_VESA:
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didVesaTiming(scrnIndex, x, mon);
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break;
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/* XXX pixel format, ar, orientation, subpixel, dot pitch, bit depth */
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case DID_DISPLAY_DEVICE:
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/* XXX interface, links, color encoding, ss, drm */
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case DID_DISPLAY_INTERFACE:
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/* XXX stereo */
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case DID_STEREO:
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/* nothing interesting in these */
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case DID_COLOR_INFO:
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case DID_PRODUCT_SERIAL:
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case DID_ASCII_STRING:
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case DID_POWER_SEQUENCING:
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case DID_TRANSFER_INFO:
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case DID_VENDOR:
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break;
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/* warn about anything else */
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default:
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xf86DrvMsg(scrnIndex, X_WARNING,
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"Unknown DisplayID block type %hx\n", x[0]);
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break;
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}
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}
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static void
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forEachDisplayIDBlock(int scrnIndex, unsigned char *did, did_proc proc,
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void *closure)
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{
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int num_extensions = did[3];
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int section_size = did[1];
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unsigned char *block;
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do {
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if ((did[0] & 0xf0) != 0x10) /* not 1.x, abort */
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return;
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/* XXX also, checksum */
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block = did + 4;
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while (section_size > 0) {
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int block_size = (block[2] + 2);
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proc(scrnIndex, block, closure);
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section_size -= block_size;
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block += block_size;
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}
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did += (did[1] + 5);
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} while (num_extensions--);
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}
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/*
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* Fill out MonPtr with xf86MonPtr information.
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*/
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void
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xf86DisplayIDMonitorSet(int scrnIndex, MonPtr mon, xf86MonPtr DDC)
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{
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if (!mon || !DDC)
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return;
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mon->DDC = DDC;
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forEachDisplayIDBlock(scrnIndex, DDC->rawData, handleDisplayIDBlock, mon);
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}
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