/*  * drivers/video/edid.h - EDID/DDC Header * * Based on: *   1. XFree86 4.3.0, edid.h *      Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE> *  *   2. John Fremlin <vii@users.sourceforge.net> and  *      Ani Joshi <ajoshi@unixbox.com> * * DDC is a Trademark of VESA (Video Electronics Standard Association). * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file COPYING in the main directory of this archive * for more details.*/ #ifndef __EDID_H__#define __EDID_H__ #define EDID_LENGTH				0x80#define EDID_HEADER				0x00#define EDID_HEADER_END				0x07 #define ID_MANUFACTURER_NAME			0x08#define ID_MANUFACTURER_NAME_END		0x09#define ID_MODEL				0x0a #define ID_SERIAL_NUMBER			0x0c #define MANUFACTURE_WEEK			0x10#define MANUFACTURE_YEAR			0x11 #define EDID_STRUCT_VERSION			0x12#define EDID_STRUCT_REVISION			0x13 #define EDID_STRUCT_DISPLAY                     0x14 #define DPMS_FLAGS				0x18#define ESTABLISHED_TIMING_1			0x23#define ESTABLISHED_TIMING_2			0x24#define MANUFACTURERS_TIMINGS			0x25 /* standard timings supported */#define STD_TIMING                              8#define STD_TIMING_DESCRIPTION_SIZE             2#define STD_TIMING_DESCRIPTIONS_START           0x26 #define DETAILED_TIMING_DESCRIPTIONS_START	0x36#define DETAILED_TIMING_DESCRIPTION_SIZE	18#define NO_DETAILED_TIMING_DESCRIPTIONS		4 #define DETAILED_TIMING_DESCRIPTION_1		0x36#define DETAILED_TIMING_DESCRIPTION_2		0x48#define DETAILED_TIMING_DESCRIPTION_3		0x5a#define DETAILED_TIMING_DESCRIPTION_4		0x6c #define DESCRIPTOR_DATA				5 #define UPPER_NIBBLE( x ) \        (((128|64|32|16) & (x)) >> 4) #define LOWER_NIBBLE( x ) \        ((1|2|4|8) & (x)) #define COMBINE_HI_8LO( hi, lo ) \        ( (((unsigned)hi) << 8) | (unsigned)lo ) #define COMBINE_HI_4LO( hi, lo ) \        ( (((unsigned)hi) << 4) | (unsigned)lo ) #define PIXEL_CLOCK_LO     (unsigned)block[ 0 ]#define PIXEL_CLOCK_HI     (unsigned)block[ 1 ]#define PIXEL_CLOCK	   (COMBINE_HI_8LO( PIXEL_CLOCK_HI,PIXEL_CLOCK_LO )*10000)#define H_ACTIVE_LO        (unsigned)block[ 2 ]#define H_BLANKING_LO      (unsigned)block[ 3 ]#define H_ACTIVE_HI        UPPER_NIBBLE( (unsigned)block[ 4 ] )#define H_ACTIVE           COMBINE_HI_8LO( H_ACTIVE_HI, H_ACTIVE_LO )#define H_BLANKING_HI      LOWER_NIBBLE( (unsigned)block[ 4 ] )#define H_BLANKING         COMBINE_HI_8LO( H_BLANKING_HI, H_BLANKING_LO ) #define V_ACTIVE_LO        (unsigned)block[ 5 ]#define V_BLANKING_LO      (unsigned)block[ 6 ]#define V_ACTIVE_HI        UPPER_NIBBLE( (unsigned)block[ 7 ] )#define V_ACTIVE           COMBINE_HI_8LO( V_ACTIVE_HI, V_ACTIVE_LO )#define V_BLANKING_HI      LOWER_NIBBLE( (unsigned)block[ 7 ] )#define V_BLANKING         COMBINE_HI_8LO( V_BLANKING_HI, V_BLANKING_LO ) #define H_SYNC_OFFSET_LO   (unsigned)block[ 8 ]#define H_SYNC_WIDTH_LO    (unsigned)block[ 9 ] #define V_SYNC_OFFSET_LO   UPPER_NIBBLE( (unsigned)block[ 10 ] )#define V_SYNC_WIDTH_LO    LOWER_NIBBLE( (unsigned)block[ 10 ] ) #define V_SYNC_WIDTH_HI    ((unsigned)block[ 11 ] & (1|2))#define V_SYNC_OFFSET_HI   (((unsigned)block[ 11 ] & (4|8)) >> 2) #define H_SYNC_WIDTH_HI    (((unsigned)block[ 11 ] & (16|32)) >> 4)#define H_SYNC_OFFSET_HI   (((unsigned)block[ 11 ] & (64|128)) >> 6) #define V_SYNC_WIDTH       COMBINE_HI_4LO( V_SYNC_WIDTH_HI, V_SYNC_WIDTH_LO )#define V_SYNC_OFFSET      COMBINE_HI_4LO( V_SYNC_OFFSET_HI, V_SYNC_OFFSET_LO ) #define H_SYNC_WIDTH       COMBINE_HI_8LO( H_SYNC_WIDTH_HI, H_SYNC_WIDTH_LO )#define H_SYNC_OFFSET      COMBINE_HI_8LO( H_SYNC_OFFSET_HI, H_SYNC_OFFSET_LO ) #define H_SIZE_LO          (unsigned)block[ 12 ]#define V_SIZE_LO          (unsigned)block[ 13 ] #define H_SIZE_HI          UPPER_NIBBLE( (unsigned)block[ 14 ] )#define V_SIZE_HI          LOWER_NIBBLE( (unsigned)block[ 14 ] ) #define H_SIZE             COMBINE_HI_8LO( H_SIZE_HI, H_SIZE_LO )#define V_SIZE             COMBINE_HI_8LO( V_SIZE_HI, V_SIZE_LO ) #define H_BORDER           (unsigned)block[ 15 ]#define V_BORDER           (unsigned)block[ 16 ] #define FLAGS              (unsigned)block[ 17 ] #define INTERLACED         (FLAGS&128)#define SYNC_TYPE          (FLAGS&3<<3)	/* bits 4,3 */#define SYNC_SEPARATE      (3<<3)#define HSYNC_POSITIVE     (FLAGS & 4)#define VSYNC_POSITIVE     (FLAGS & 2) #define V_MIN_RATE              block[ 5 ]#define V_MAX_RATE              block[ 6 ]#define H_MIN_RATE              block[ 7 ]#define H_MAX_RATE              block[ 8 ]#define MAX_PIXEL_CLOCK         (((int)block[ 9 ]) * 10)#define GTF_SUPPORT		block[10] #define DPMS_ACTIVE_OFF		(1 << 5)#define DPMS_SUSPEND		(1 << 6)#define DPMS_STANDBY		(1 << 7) #endif /* __EDID_H__ */