145 static int check_edid(unsigned char *edid)  in check_edid()  argument
147 	unsigned char *block = edid + ID_MANUFACTURER_NAME, manufacturer[4];  in check_edid()
170 			if (edid[i] != edid_v1_header[i]) {  in check_edid()
177 		b = edid + EDID_STRUCT_DISPLAY;  in check_edid()
184 		b = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in check_edid()
207 static void fix_edid(unsigned char *edid, int fix)  in fix_edid()  argument
215 		memcpy(edid, edid_v1_header, 8);  in fix_edid()
219 		b = edid + EDID_STRUCT_DISPLAY;  in fix_edid()
221 		edid[127] += 0x80;  in fix_edid()
225 		b = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in fix_edid()
249 			csum += edid[i];  in fix_edid()
251 		edid[127] = 256 - csum;  in fix_edid()
256 static int edid_checksum(unsigned char *edid)  in edid_checksum()  argument
259 	int i, err = 0, fix = check_edid(edid);  in edid_checksum()
262 		fix_edid(edid, fix);  in edid_checksum()
265 		csum += edid[i];  in edid_checksum()
266 		all_null |= edid[i];  in edid_checksum()
277 static int edid_check_header(unsigned char *edid)  in edid_check_header()  argument
279 	int i, err = 1, fix = check_edid(edid);  in edid_check_header()
282 		fix_edid(edid, fix);  in edid_check_header()
285 		if (edid[i] != edid_v1_header[i])  in edid_check_header()
615 static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize,  in fb_create_modedb()  argument
627 	if (edid == NULL || !edid_checksum(edid) ||  in fb_create_modedb()
628 	    !edid_check_header(edid)) {  in fb_create_modedb()
633 	ver = edid[EDID_STRUCT_VERSION];  in fb_create_modedb()
634 	rev = edid[EDID_STRUCT_REVISION];  in fb_create_modedb()
639 	block = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in fb_create_modedb()
652 	block = edid + ESTABLISHED_TIMING_1;  in fb_create_modedb()
656 	block = edid + STD_TIMING_DESCRIPTIONS_START;  in fb_create_modedb()
660 	block = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in fb_create_modedb()
694 static int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs)  in fb_get_monitor_limits()  argument
699 	block = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in fb_get_monitor_limits()
723 		modes = fb_create_modedb(edid, &num_modes, specs);  in fb_get_monitor_limits()
775 static void get_monspecs(unsigned char *edid, struct fb_monspecs *specs)  in get_monspecs()  argument
779 	block = edid + EDID_STRUCT_DISPLAY;  in get_monspecs()
781 	fb_get_monitor_limits(edid, specs);  in get_monspecs()
893 int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)  in fb_parse_edid()  argument
898 	if (edid == NULL || var == NULL)  in fb_parse_edid()
901 	if (!(edid_checksum(edid)))  in fb_parse_edid()
904 	if (!(edid_check_header(edid)))  in fb_parse_edid()
907 	block = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in fb_parse_edid()
936 void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)  in fb_edid_to_monspecs()  argument
941 	if (edid == NULL)  in fb_edid_to_monspecs()
944 	if (!(edid_checksum(edid)))  in fb_edid_to_monspecs()
947 	if (!(edid_check_header(edid)))  in fb_edid_to_monspecs()
952 	specs->version = edid[EDID_STRUCT_VERSION];  in fb_edid_to_monspecs()
953 	specs->revision = edid[EDID_STRUCT_REVISION];  in fb_edid_to_monspecs()
961 	parse_vendor_block(edid + ID_MANUFACTURER_NAME, specs);  in fb_edid_to_monspecs()
963 	block = edid + DETAILED_TIMING_DESCRIPTIONS_START;  in fb_edid_to_monspecs()
978 	get_monspecs(edid, specs);  in fb_edid_to_monspecs()
980 	specs->modedb = fb_create_modedb(edid, &specs->modedb_len, specs);  in fb_edid_to_monspecs()
1005 void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs)  in fb_edid_add_monspecs()  argument
1013 	if (!edid)  in fb_edid_add_monspecs()
1016 	if (!edid_checksum(edid))  in fb_edid_add_monspecs()
1019 	if (edid[0] != 0x2 ||  in fb_edid_add_monspecs()
1020 	    edid[2] < 4 || edid[2] > 128 - DETAILED_TIMING_DESCRIPTION_SIZE)  in fb_edid_add_monspecs()
1025 	while (pos < edid[2]) {  in fb_edid_add_monspecs()
1026 		u8 len = edid[pos] & 0x1f, type = (edid[pos] >> 5) & 7;  in fb_edid_add_monspecs()
1030 				u8 idx = edid[pos + i] & 0x7f;  in fb_edid_add_monspecs()
1033 					 edid[pos + i] & 0x80 ? "" : "on-n", idx);  in fb_edid_add_monspecs()
1038 			if (edid[pos + 1] == 3 && edid[pos + 2] == 0xc &&  in fb_edid_add_monspecs()
1039 			    edid[pos + 3] == 0)  in fb_edid_add_monspecs()
1045 	block = edid + edid[2];  in fb_edid_add_monspecs()
1049 	for (i = 0; i < (128 - edid[2]) / DETAILED_TIMING_DESCRIPTION_SIZE;  in fb_edid_add_monspecs()
1052 			edt[num++] = block - edid;  in fb_edid_add_monspecs()
1067 		get_detailed_timing(edid + edt[i - specs->modedb_len], &m[i]);  in fb_edid_add_monspecs()
1493 int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)  in fb_parse_edid()  argument
1497 void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)  in fb_edid_to_monspecs()  argument
1501 void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs)  in fb_edid_add_monspecs()  argument
1588 	unsigned char *edid = NULL;  in fb_firmware_edid()  local
1597 		edid = edid_info.dummy;  in fb_firmware_edid()
1599 	return edid;  in fb_firmware_edid()