| 1 |
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| 2 | /* xf86DDC.h
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| 3 | *
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| 4 | * This file contains all information to interpret a standard EDIC block
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| 5 | * transmitted by a display device via DDC (Display Data Channel). So far
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| 6 | * there is no information to deal with optional EDID blocks.
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| 7 | * DDC is a Trademark of VESA (Video Electronics Standard Association).
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| 8 | *
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| 9 | * Copyright 1998 by Egbert Eich <[email protected]>
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| 10 | */
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| 11 |
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| 12 | #ifndef XF86_DDC_H
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| 13 | # define XF86_DDC_H
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| 14 |
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| 15 | #include "edid.h"
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| 16 | #include "xf86i2c.h"
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| 17 | #include "xf86str.h"
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| 18 |
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| 19 | /* speed up / slow down */
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| 20 | typedef enum {
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| 21 | DDC_SLOW,
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| 22 | DDC_FAST
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| 23 | } xf86ddcSpeed;
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| 24 |
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| 25 | typedef void (* DDC1SetSpeedProc)(ScrnInfoPtr, xf86ddcSpeed);
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| 26 |
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| 27 | extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC1(
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| 28 | int scrnIndex,
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| 29 | DDC1SetSpeedProc DDC1SetSpeed,
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| 30 | unsigned int (*DDC1Read)(ScrnInfoPtr)
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| 31 | );
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| 32 |
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| 33 | extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC2(
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| 34 | int scrnIndex,
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| 35 | I2CBusPtr pBus
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| 36 | );
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| 37 |
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| 38 | extern _X_EXPORT xf86MonPtr xf86DoEEDID(int scrnIndex, I2CBusPtr pBus, Bool);
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| 39 |
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| 40 | extern _X_EXPORT xf86MonPtr xf86PrintEDID(
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| 41 | xf86MonPtr monPtr
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| 42 | );
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| 43 |
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| 44 | extern _X_EXPORT xf86MonPtr xf86InterpretEDID(
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| 45 | int screenIndex, Uchar *block
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| 46 | );
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| 47 |
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| 48 | extern _X_EXPORT xf86MonPtr xf86InterpretEEDID(
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| 49 | int screenIndex, Uchar *block
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| 50 | );
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| 51 |
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| 52 | extern _X_EXPORT void
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| 53 | xf86EdidMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC);
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| 54 |
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| 55 | extern _X_EXPORT Bool xf86SetDDCproperties(
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| 56 | ScrnInfoPtr pScreen,
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| 57 | xf86MonPtr DDC
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| 58 | );
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| 59 |
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| 60 | extern _X_EXPORT DisplayModePtr xf86DDCGetModes(int scrnIndex, xf86MonPtr DDC);
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| 61 |
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| 62 | extern _X_EXPORT Bool
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| 63 | xf86MonitorIsHDMI(xf86MonPtr mon);
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| 64 |
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| 65 | extern _X_EXPORT xf86MonPtr
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| 66 | xf86DoDisplayID(int scrnIndex, I2CBusPtr pBus);
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| 67 |
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| 68 | extern _X_EXPORT void
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| 69 | xf86DisplayIDMonitorSet(int scrnIndex, MonPtr mon, xf86MonPtr DDC);
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| 70 |
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| 71 | extern _X_EXPORT DisplayModePtr
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| 72 | FindDMTMode(int hsize, int vsize, int refresh, Bool rb);
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| 73 |
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| 74 | extern _X_EXPORT const DisplayModeRec DMTModes[];
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| 75 |
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| 76 | /*
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| 77 | * Quirks to work around broken EDID data from various monitors.
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| 78 | */
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| 79 | typedef enum {
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| 80 | DDC_QUIRK_NONE = 0,
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| 81 | /* First detailed mode is bogus, prefer largest mode at 60hz */
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| 82 | DDC_QUIRK_PREFER_LARGE_60 = 1 << 0,
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| 83 | /* 135MHz clock is too high, drop a bit */
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| 84 | DDC_QUIRK_135_CLOCK_TOO_HIGH = 1 << 1,
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| 85 | /* Prefer the largest mode at 75 Hz */
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| 86 | DDC_QUIRK_PREFER_LARGE_75 = 1 << 2,
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| 87 | /* Convert detailed timing's horizontal from units of cm to mm */
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| 88 | DDC_QUIRK_DETAILED_H_IN_CM = 1 << 3,
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| 89 | /* Convert detailed timing's vertical from units of cm to mm */
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| 90 | DDC_QUIRK_DETAILED_V_IN_CM = 1 << 4,
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| 91 | /* Detailed timing descriptors have bogus size values, so just take the
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| 92 | * maximum size and use that.
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| 93 | */
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| 94 | DDC_QUIRK_DETAILED_USE_MAXIMUM_SIZE = 1 << 5,
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| 95 | /* Monitor forgot to set the first detailed is preferred bit. */
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| 96 | DDC_QUIRK_FIRST_DETAILED_PREFERRED = 1 << 6,
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| 97 | /* use +hsync +vsync for detailed mode */
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| 98 | DDC_QUIRK_DETAILED_SYNC_PP = 1 << 7,
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| 99 | /* Force single-link DVI bandwidth limit */
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| 100 | DDC_QUIRK_DVI_SINGLE_LINK = 1 << 8,
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| 101 | } ddc_quirk_t;
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| 102 |
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| 103 | typedef void (* handle_detailed_fn)(struct detailed_monitor_section *,void *);
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| 104 |
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| 105 | void xf86ForEachDetailedBlock(xf86MonPtr mon,
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| 106 | handle_detailed_fn,
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| 107 | void *data);
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| 108 |
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| 109 | ddc_quirk_t
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| 110 | xf86DDCDetectQuirks(int scrnIndex, xf86MonPtr DDC, Bool verbose);
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| 111 |
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| 112 | void xf86DetTimingApplyQuirks(struct detailed_monitor_section *det_mon,
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| 113 | ddc_quirk_t quirks, int hsize, int vsize);
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| 114 |
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| 115 | typedef void (* handle_video_fn)(struct cea_video_block *, void *);
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| 116 |
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| 117 | void xf86ForEachVideoBlock(xf86MonPtr,
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| 118 | handle_video_fn,
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| 119 | void *);
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| 120 |
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| 121 | #endif
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