xf86DDC.h (3396B)
1 2 /* xf86DDC.h 3 * 4 * This file contains all information to interpret a standard EDIC block 5 * transmitted by a display device via DDC (Display Data Channel). So far 6 * there is no information to deal with optional EDID blocks. 7 * DDC is a Trademark of VESA (Video Electronics Standard Association). 8 * 9 * Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE> 10 */ 11 12 #ifndef XF86_DDC_H 13 #define XF86_DDC_H 14 15 #include "edid.h" 16 #include "xf86i2c.h" 17 #include "xf86str.h" 18 19 /* speed up / slow down */ 20 typedef enum { 21 DDC_SLOW, 22 DDC_FAST 23 } xf86ddcSpeed; 24 25 typedef void (*DDC1SetSpeedProc) (ScrnInfoPtr, xf86ddcSpeed); 26 27 extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC1(ScrnInfoPtr pScrn, 28 DDC1SetSpeedProc DDC1SetSpeed, 29 unsigned 30 int (*DDC1Read) (ScrnInfoPtr) 31 ); 32 33 extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC2(ScrnInfoPtr pScrn, I2CBusPtr pBus); 34 35 extern _X_EXPORT xf86MonPtr xf86DoEEDID(ScrnInfoPtr pScrn, I2CBusPtr pBus, Bool); 36 37 extern _X_EXPORT xf86MonPtr xf86PrintEDID(xf86MonPtr monPtr); 38 39 extern _X_EXPORT xf86MonPtr xf86InterpretEDID(int screenIndex, Uchar * block); 40 41 extern _X_EXPORT xf86MonPtr xf86InterpretEEDID(int screenIndex, Uchar * block); 42 43 extern _X_EXPORT void 44 xf86EdidMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC); 45 46 extern _X_EXPORT Bool xf86SetDDCproperties(ScrnInfoPtr pScreen, xf86MonPtr DDC); 47 48 extern _X_EXPORT Bool 49 xf86MonitorIsHDMI(xf86MonPtr mon); 50 51 extern _X_EXPORT Bool 52 gtf_supported(xf86MonPtr mon); 53 54 extern _X_EXPORT DisplayModePtr 55 FindDMTMode(int hsize, int vsize, int refresh, Bool rb); 56 57 extern _X_EXPORT const DisplayModeRec DMTModes[]; 58 59 /* 60 * Quirks to work around broken EDID data from various monitors. 61 */ 62 typedef enum { 63 DDC_QUIRK_NONE = 0, 64 /* First detailed mode is bogus, prefer largest mode at 60hz */ 65 DDC_QUIRK_PREFER_LARGE_60 = 1 << 0, 66 /* 135MHz clock is too high, drop a bit */ 67 DDC_QUIRK_135_CLOCK_TOO_HIGH = 1 << 1, 68 /* Prefer the largest mode at 75 Hz */ 69 DDC_QUIRK_PREFER_LARGE_75 = 1 << 2, 70 /* Convert detailed timing's horizontal from units of cm to mm */ 71 DDC_QUIRK_DETAILED_H_IN_CM = 1 << 3, 72 /* Convert detailed timing's vertical from units of cm to mm */ 73 DDC_QUIRK_DETAILED_V_IN_CM = 1 << 4, 74 /* Detailed timing descriptors have bogus size values, so just take the 75 * maximum size and use that. 76 */ 77 DDC_QUIRK_DETAILED_USE_MAXIMUM_SIZE = 1 << 5, 78 /* Monitor forgot to set the first detailed is preferred bit. */ 79 DDC_QUIRK_FIRST_DETAILED_PREFERRED = 1 << 6, 80 /* use +hsync +vsync for detailed mode */ 81 DDC_QUIRK_DETAILED_SYNC_PP = 1 << 7, 82 /* Force single-link DVI bandwidth limit */ 83 DDC_QUIRK_DVI_SINGLE_LINK = 1 << 8, 84 } ddc_quirk_t; 85 86 typedef void (*handle_detailed_fn) (struct detailed_monitor_section *, void *); 87 88 void xf86ForEachDetailedBlock(xf86MonPtr mon, handle_detailed_fn, void *data); 89 90 ddc_quirk_t xf86DDCDetectQuirks(int scrnIndex, xf86MonPtr DDC, Bool verbose); 91 92 void xf86DetTimingApplyQuirks(struct detailed_monitor_section *det_mon, 93 ddc_quirk_t quirks, int hsize, int vsize); 94 95 typedef void (*handle_video_fn) (struct cea_video_block *, void *); 96 97 void xf86ForEachVideoBlock(xf86MonPtr, handle_video_fn, void *); 98 99 struct cea_data_block *xf86MonitorFindHDMIBlock(xf86MonPtr mon); 100 101 #endif