a279fb3ff3
The HDMI CEA vendor specific block has some interesting information,
such as the maximum TMDS dot clock.
v2: Don't parse CEA blocks with invalid offsets, remove spurious
brackets (Chris Wilson)
v3: Fix the looping through the CEA data blocks, it had a typo using the
wrong variable coming from the code it was ported from.
Replace x << 16 + y << 8 + z by x << 16 | y << 8 | z
(Chris Wilson)
v4: Remove the stray ';' at the end of "if (*end == 0)".
(Dominik Behr on IRC)
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
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/* xf86DDC.h
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*
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* This file contains all information to interpret a standard EDIC block
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* transmitted by a display device via DDC (Display Data Channel). So far
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* there is no information to deal with optional EDID blocks.
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* DDC is a Trademark of VESA (Video Electronics Standard Association).
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*
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* Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE>
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*/
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#ifndef XF86_DDC_H
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#define XF86_DDC_H
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#include "edid.h"
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#include "xf86i2c.h"
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#include "xf86str.h"
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/* speed up / slow down */
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typedef enum {
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DDC_SLOW,
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DDC_FAST
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} xf86ddcSpeed;
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typedef void (*DDC1SetSpeedProc) (ScrnInfoPtr, xf86ddcSpeed);
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extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC1(ScrnInfoPtr pScrn,
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DDC1SetSpeedProc DDC1SetSpeed,
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unsigned
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int (*DDC1Read) (ScrnInfoPtr)
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);
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extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC2(ScrnInfoPtr pScrn, I2CBusPtr pBus);
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extern _X_EXPORT xf86MonPtr xf86DoEEDID(ScrnInfoPtr pScrn, I2CBusPtr pBus, Bool);
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extern _X_EXPORT xf86MonPtr xf86PrintEDID(xf86MonPtr monPtr);
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extern _X_EXPORT xf86MonPtr xf86InterpretEDID(int screenIndex, Uchar * block);
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extern _X_EXPORT xf86MonPtr xf86InterpretEEDID(int screenIndex, Uchar * block);
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extern _X_EXPORT void
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xf86EdidMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC);
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extern _X_EXPORT Bool xf86SetDDCproperties(ScrnInfoPtr pScreen, xf86MonPtr DDC);
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extern _X_EXPORT Bool
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xf86MonitorIsHDMI(xf86MonPtr mon);
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extern _X_EXPORT xf86MonPtr xf86DoDisplayID(ScrnInfoPtr pScrn, I2CBusPtr pBus);
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extern _X_EXPORT void
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xf86DisplayIDMonitorSet(int scrnIndex, MonPtr mon, xf86MonPtr DDC);
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extern _X_EXPORT DisplayModePtr
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FindDMTMode(int hsize, int vsize, int refresh, Bool rb);
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extern _X_EXPORT const DisplayModeRec DMTModes[];
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/*
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* Quirks to work around broken EDID data from various monitors.
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*/
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typedef enum {
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DDC_QUIRK_NONE = 0,
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/* First detailed mode is bogus, prefer largest mode at 60hz */
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DDC_QUIRK_PREFER_LARGE_60 = 1 << 0,
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/* 135MHz clock is too high, drop a bit */
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DDC_QUIRK_135_CLOCK_TOO_HIGH = 1 << 1,
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/* Prefer the largest mode at 75 Hz */
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DDC_QUIRK_PREFER_LARGE_75 = 1 << 2,
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/* Convert detailed timing's horizontal from units of cm to mm */
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DDC_QUIRK_DETAILED_H_IN_CM = 1 << 3,
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/* Convert detailed timing's vertical from units of cm to mm */
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DDC_QUIRK_DETAILED_V_IN_CM = 1 << 4,
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/* Detailed timing descriptors have bogus size values, so just take the
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* maximum size and use that.
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*/
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DDC_QUIRK_DETAILED_USE_MAXIMUM_SIZE = 1 << 5,
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/* Monitor forgot to set the first detailed is preferred bit. */
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DDC_QUIRK_FIRST_DETAILED_PREFERRED = 1 << 6,
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/* use +hsync +vsync for detailed mode */
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DDC_QUIRK_DETAILED_SYNC_PP = 1 << 7,
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/* Force single-link DVI bandwidth limit */
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DDC_QUIRK_DVI_SINGLE_LINK = 1 << 8,
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} ddc_quirk_t;
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typedef void (*handle_detailed_fn) (struct detailed_monitor_section *, void *);
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void xf86ForEachDetailedBlock(xf86MonPtr mon, handle_detailed_fn, void *data);
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ddc_quirk_t xf86DDCDetectQuirks(int scrnIndex, xf86MonPtr DDC, Bool verbose);
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void xf86DetTimingApplyQuirks(struct detailed_monitor_section *det_mon,
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ddc_quirk_t quirks, int hsize, int vsize);
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typedef void (*handle_video_fn) (struct cea_video_block *, void *);
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void xf86ForEachVideoBlock(xf86MonPtr, handle_video_fn, void *);
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struct cea_data_block *xf86MonitorFindHDMIBlock(xf86MonPtr mon);
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#endif
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