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Rev 2004 Rev 2160
Line 126... Line 126...
126 
static const u8 edid_header[] = {
 126 
static const u8 edid_header[] = {
127 
	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
 127 
	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
128 
};
 128 
};
Line 129... Line 129...
129 
 
 129 
 
- 
 
 130 
 /*
- 
 
 131 
 * Sanity check the header of the base EDID block.  Return 8 if the header
- 
 
 132 
 * is perfect, down to 0 if it's totally wrong.
- 
 
 133 
 */
- 
 
 134 
int drm_edid_header_is_valid(const u8 *raw_edid)
- 
 
 135 
{
- 
 
 136 
	int i, score = 0;
- 
 
 137 
 
- 
 
 138 
	for (i = 0; i < sizeof(edid_header); i++)
- 
 
 139 
		if (raw_edid[i] == edid_header[i])
- 
 
 140 
			score++;
- 
 
 141 
 
- 
 
 142 
	return score;
- 
 
 143 
}
- 
 
 144 
EXPORT_SYMBOL(drm_edid_header_is_valid);
- 
 
 145 
 
- 
 
 146 
 
130 
/*
 147 
/*
131 
 * Sanity check the EDID block (base or extension).  Return 0 if the block
 148 
 * Sanity check the EDID block (base or extension).  Return 0 if the block
132 
 * doesn't check out, or 1 if it's valid.
 149 
 * doesn't check out, or 1 if it's valid.
133 
 */
 150 
 */
134 
static bool
 151 
static bool
Line 137... Line 154...
137 
	int i;
 154 
	int i;
138 
	u8 csum = 0;
 155 
	u8 csum = 0;
139 
	struct edid *edid = (struct edid *)raw_edid;
 156 
	struct edid *edid = (struct edid *)raw_edid;
Line 140... Line 157...
140 
 
 157 
 
141 
	if (raw_edid[0] == 0x00) {
 - 
 
142 
		int score = 0;
 - 
 
143 
 
 - 
 
144 
	for (i = 0; i < sizeof(edid_header); i++)
 158 
	if (raw_edid[0] == 0x00) {
145 
		if (raw_edid[i] == edid_header[i])
 - 
 
146 
			score++;
 - 
 
147 
 
 159 
		int score = drm_edid_header_is_valid(raw_edid);
148 
	if (score == 8) ;
 160 
	if (score == 8) ;
149 
	else if (score >= 6) {
 161 
	else if (score >= 6) {
150 
		DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
 162 
		DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
151 
		memcpy(raw_edid, edid_header, sizeof(edid_header));
 163 
		memcpy(raw_edid, edid_header, sizeof(edid_header));
Line 184... Line 196...
184 
 
 196 
 
185 
bad:
 197 
bad:
186 
	if (raw_edid) {
 198 
	if (raw_edid) {
187 
		printk(KERN_ERR "Raw EDID:\n");
 199 
		printk(KERN_ERR "Raw EDID:\n");
188 
//       print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
 - 
 
189 
		printk(KERN_ERR "\n");
 200 
//		print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
190 
	}
 201 
	}
191 
	return 0;
 202 
	return 0;
Line 192... Line 203...
192 
}
 203 
}
Line 1447... Line 1458...
1447 
 * color spaces.
 1458 
 * color spaces.
1448 
 */
 1459 
 */
1449 
static void drm_add_display_info(struct edid *edid,
 1460 
static void drm_add_display_info(struct edid *edid,
1450 
				 struct drm_display_info *info)
 1461 
				 struct drm_display_info *info)
1451 
{
 1462 
{
- 
 
 1463 
	u8 *edid_ext;
- 
 
 1464 
 
1452 
	info->width_mm = edid->width_cm * 10;
 1465 
	info->width_mm = edid->width_cm * 10;
1453 
	info->height_mm = edid->height_cm * 10;
 1466 
	info->height_mm = edid->height_cm * 10;
Line 1454... Line 1467...
1454 
 
 1467 
 
1455 
	/* driver figures it out in this case */
 1468 
	/* driver figures it out in this case */
Line 1491... Line 1504...
1491 
	info->color_formats = DRM_COLOR_FORMAT_RGB444;
 1504 
	info->color_formats = DRM_COLOR_FORMAT_RGB444;
1492 
	if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
 1505 
	if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
1493 
		info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
 1506 
		info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
1494 
	if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
 1507 
	if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
1495 
		info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
 1508 
		info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
- 
 
 1509 
 
- 
 
 1510 
	/* Get data from CEA blocks if present */
- 
 
 1511 
	edid_ext = drm_find_cea_extension(edid);
- 
 
 1512 
	if (!edid_ext)
- 
 
 1513 
		return;
- 
 
 1514 
 
- 
 
 1515 
	info->cea_rev = edid_ext[1];
1496 
}
 1516 
}
Line 1497... Line 1517...
1497 
 
 1517 
 
1498 
/**
 1518 
/**
1499 
 * drm_add_edid_modes - add modes from EDID data, if available
 1519 
 * drm_add_edid_modes - add modes from EDID data, if available