WebSVN – Kolibri OS – Diff – /drivers/video/drm/drm_edid.c



#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE	(1 << 4)
/* Monitor forgot to set the first detailed is preferred bit. */
#define EDID_QUIRK_FIRST_DETAILED_PREFERRED	(1 << 5)
/* use +hsync +vsync for detailed mode */
#define EDID_QUIRK_DETAILED_SYNC_PP		(1 << 6)
 
 
 

 
#define LEVEL_DMT	0
#define LEVEL_GTF	1

static const u8 edid_header[] = {
	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
};

 
/**
 * drm_edid_is_valid - sanity check EDID data
 * @edid: EDID data
 *
 * Sanity check the EDID block by looking at the header, the version number
 * and the checksum.  Return 0 if the EDID doesn't check out, or 1 if it's
 * valid.
 */
bool drm_edid_is_valid(struct edid *edid)
{
	int i, score = 0;
	u8 csum = 0;

//       print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
//       printk("\n");
	}
	return 0;
}
EXPORT_SYMBOL(drm_edid_is_valid);

 
/**
 * edid_vendor - match a string against EDID's obfuscated vendor field
 * @edid: EDID to match

		 */
		return 0;
	}

 
	/* Chose real EDID extension number */
	edid_ext_num = edid->extensions > DRM_MAX_EDID_EXT_NUM ?

		DRM_MAX_EDID_EXT_NUM : edid->extensions;
 
	/* Find CEA extension */
	for (i = 0; i < edid_ext_num; i++) {

	int i;

 
	for (i = 0; i < 4; i++) {
		if (drm_do_probe_ddc_edid(adapter, buf, len))
			return -1;
		if (drm_edid_is_valid((struct edid *)buf))
			return 0;

	}
 

			  struct i2c_adapter *adapter)
{
	int ret;
	struct edid *edid;

 
	edid = kmalloc(EDID_LENGTH * (DRM_MAX_EDID_EXT_NUM + 1),
		       GFP_KERNEL);
	if (edid == NULL) {
		dev_warn(&connector->dev->pdev->dev,
			 "Failed to allocate EDID\n");

 
	/* There are EDID extensions to be read */
	if (edid->extensions != 0) {

		int edid_ext_num = edid->extensions;
 
		if (edid_ext_num > DRM_MAX_EDID_EXT_NUM) {
			dev_warn(&connector->dev->pdev->dev,
				 "The number of extension(%d) is "
				 "over max (%d), actually read number (%d)\n",
				 edid_ext_num, DRM_MAX_EDID_EXT_NUM,
				 DRM_MAX_EDID_EXT_NUM);
			/* Reset EDID extension number to be read */
			edid_ext_num = DRM_MAX_EDID_EXT_NUM;
		}
		/* Read EDID including extensions too */
		ret = drm_ddc_read_edid(connector, adapter, (char *)edid,

	/* No EDID or EDID extensions */
	if (edid == NULL || edid->extensions == 0)
		goto end;

 
	/* Chose real EDID extension number */
	edid_ext_num = edid->extensions > DRM_MAX_EDID_EXT_NUM ?

		       DRM_MAX_EDID_EXT_NUM : edid->extensions;
 
	/* Find CEA extension */
	for (i = 0; i < edid_ext_num; i++) {

	u32 quirks;

 
	if (edid == NULL) {
		return 0;
	}
	if (!drm_edid_is_valid(edid)) {
		dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",
			 drm_get_connector_name(connector));
		return 0;

Rev 1428	Rev 1430
Line 58...	Line 58...
58	#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)	58	#define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4)
59	/* Monitor forgot to set the first detailed is preferred bit. */	59	/* Monitor forgot to set the first detailed is preferred bit. */
60	#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)	60	#define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5)
61	/* use +hsync +vsync for detailed mode */	61	/* use +hsync +vsync for detailed mode */
62	#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)	62	#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
63	/* define the number of Extension EDID block */	-
64	#define MAX_EDID_EXT_NUM 4	-
-		63
Line 65...	Line 64...
65		64
66	#define LEVEL_DMT 0	65	#define LEVEL_DMT 0
67	#define LEVEL_GTF 1	66	#define LEVEL_GTF 1
Line 112...	Line 111...
112	static const u8 edid_header[] = {	111	static const u8 edid_header[] = {
113	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00	112	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
114	};	113	};
Line 115...	Line 114...
115		114
116	/**	115	/**
117	* edid_is_valid - sanity check EDID data	116	* drm_edid_is_valid - sanity check EDID data
118	* @edid: EDID data	117	* @edid: EDID data
119	*	118	*
120	* Sanity check the EDID block by looking at the header, the version number	119	* Sanity check the EDID block by looking at the header, the version number
121	* and the checksum. Return 0 if the EDID doesn't check out, or 1 if it's	120	* and the checksum. Return 0 if the EDID doesn't check out, or 1 if it's
122	* valid.	121	* valid.
123	*/	122	*/
124	static bool edid_is_valid(struct edid *edid)	123	bool drm_edid_is_valid(struct edid *edid)
125	{	124	{
126	int i, score = 0;	125	int i, score = 0;
127	u8 csum = 0;	126	u8 csum = 0;
Line 161...	Line 160...
161	// print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);	160	// print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
162	// printk("\n");	161	// printk("\n");
163	}	162	}
164	return 0;	163	return 0;
165	}	164	}
-		165	EXPORT_SYMBOL(drm_edid_is_valid);
Line 166...	Line 166...
166		166
167	/**	167	/**
168	* edid_vendor - match a string against EDID's obfuscated vendor field	168	* edid_vendor - match a string against EDID's obfuscated vendor field
169	* @edid: EDID to match	169	* @edid: EDID to match
Line 1110...	Line 1110...
1110	*/	1110	*/
1111	return 0;	1111	return 0;
1112	}	1112	}
Line 1113...	Line 1113...
1113		1113
1114	/* Chose real EDID extension number */	1114	/* Chose real EDID extension number */
1115	edid_ext_num = edid->extensions > MAX_EDID_EXT_NUM ?	1115	edid_ext_num = edid->extensions > DRM_MAX_EDID_EXT_NUM ?
Line 1116...	Line 1116...
1116	MAX_EDID_EXT_NUM : edid->extensions;	1116	DRM_MAX_EDID_EXT_NUM : edid->extensions;
1117		1117
1118	/* Find CEA extension */	1118	/* Find CEA extension */
1119	for (i = 0; i < edid_ext_num; i++) {	1119	for (i = 0; i < edid_ext_num; i++) {
Line 1193...	Line 1193...
1193	int i;	1193	int i;
Line 1194...	Line 1194...
1194		1194
1195	for (i = 0; i < 4; i++) {	1195	for (i = 0; i < 4; i++) {
1196	if (drm_do_probe_ddc_edid(adapter, buf, len))	1196	if (drm_do_probe_ddc_edid(adapter, buf, len))
1197	return -1;	1197	return -1;
1198	if (edid_is_valid((struct edid *)buf))	1198	if (drm_edid_is_valid((struct edid *)buf))
1199	return 0;	1199	return 0;
Line 1200...	Line 1200...
1200	}	1200	}
1201		1201
Line 1218...	Line 1218...
1218	struct i2c_adapter *adapter)	1218	struct i2c_adapter *adapter)
1219	{	1219	{
1220	int ret;	1220	int ret;
1221	struct edid *edid;	1221	struct edid *edid;
Line 1222...	Line 1222...
1222		1222
1223	edid = kmalloc(EDID_LENGTH * (MAX_EDID_EXT_NUM + 1),	1223	edid = kmalloc(EDID_LENGTH * (DRM_MAX_EDID_EXT_NUM + 1),
1224	GFP_KERNEL);	1224	GFP_KERNEL);
1225	if (edid == NULL) {	1225	if (edid == NULL) {
1226	dev_warn(&connector->dev->pdev->dev,	1226	dev_warn(&connector->dev->pdev->dev,
1227	"Failed to allocate EDID\n");	1227	"Failed to allocate EDID\n");
Line 1236...	Line 1236...
1236		1236
1237	/* There are EDID extensions to be read */	1237	/* There are EDID extensions to be read */
1238	if (edid->extensions != 0) {	1238	if (edid->extensions != 0) {
Line 1239...	Line 1239...
1239	int edid_ext_num = edid->extensions;	1239	int edid_ext_num = edid->extensions;
1240		1240
1241	if (edid_ext_num > MAX_EDID_EXT_NUM) {	1241	if (edid_ext_num > DRM_MAX_EDID_EXT_NUM) {
1242	dev_warn(&connector->dev->pdev->dev,	1242	dev_warn(&connector->dev->pdev->dev,
1243	"The number of extension(%d) is "	1243	"The number of extension(%d) is "
1244	"over max (%d), actually read number (%d)\n",	1244	"over max (%d), actually read number (%d)\n",
1245	edid_ext_num, MAX_EDID_EXT_NUM,	1245	edid_ext_num, DRM_MAX_EDID_EXT_NUM,
1246	MAX_EDID_EXT_NUM);	1246	DRM_MAX_EDID_EXT_NUM);
1247	/* Reset EDID extension number to be read */	1247	/* Reset EDID extension number to be read */
1248	edid_ext_num = MAX_EDID_EXT_NUM;	1248	edid_ext_num = DRM_MAX_EDID_EXT_NUM;
1249	}	1249	}
1250	/* Read EDID including extensions too */	1250	/* Read EDID including extensions too */
1251	ret = drm_ddc_read_edid(connector, adapter, (char *)edid,	1251	ret = drm_ddc_read_edid(connector, adapter, (char *)edid,
Line 1286...	Line 1286...
1286	/* No EDID or EDID extensions */	1286	/* No EDID or EDID extensions */
1287	if (edid == NULL \|\| edid->extensions == 0)	1287	if (edid == NULL \|\| edid->extensions == 0)
1288	goto end;	1288	goto end;
Line 1289...	Line 1289...
1289		1289
1290	/* Chose real EDID extension number */	1290	/* Chose real EDID extension number */
1291	edid_ext_num = edid->extensions > MAX_EDID_EXT_NUM ?	1291	edid_ext_num = edid->extensions > DRM_MAX_EDID_EXT_NUM ?
Line 1292...	Line 1292...
1292	MAX_EDID_EXT_NUM : edid->extensions;	1292	DRM_MAX_EDID_EXT_NUM : edid->extensions;
1293		1293
1294	/* Find CEA extension */	1294	/* Find CEA extension */
1295	for (i = 0; i < edid_ext_num; i++) {	1295	for (i = 0; i < edid_ext_num; i++) {
Line 1344...	Line 1344...
1344	u32 quirks;	1344	u32 quirks;
Line 1345...	Line 1345...
1345		1345
1346	if (edid == NULL) {	1346	if (edid == NULL) {
1347	return 0;	1347	return 0;
1348	}	1348	}
1349	if (!edid_is_valid(edid)) {	1349	if (!drm_edid_is_valid(edid)) {
1350	dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",	1350	dev_warn(&connector->dev->pdev->dev, "%s: EDID invalid.\n",
1351	drm_get_connector_name(connector));	1351	drm_get_connector_name(connector));
1352	return 0;	1352	return 0;

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_edid.c – Rev 1428 → 1430