X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=include%2Fedid.h;h=a9f2f3d3abff930f42b6e3bcff106a11ea2f6f4f;hb=f7b2849a47c323a40fbf1545158af1d4fd94bfe1;hp=a69f43a20648381f79c3131acc018f9e477e1d84;hpb=e745d064b441dbf48eac4bc2c494263d54262dec;p=u-boot

diff --git a/include/edid.h b/include/edid.h
index a69f43a206..a9f2f3d3ab 100644
--- a/include/edid.h
+++ b/include/edid.h
@@ -15,6 +15,13 @@
 
 #include <linux/types.h>
 
+/* Size of the EDID data */
+#define EDID_SIZE	128
+#define EDID_EXT_SIZE	256
+
+/* OUI of HDMI vendor specific data block */
+#define HDMI_IEEE_OUI 0x000c03
+
 #define GET_BIT(_x, _pos) \
 	(((_x) >> (_pos)) & 1)
 #define GET_BITS(_x, _pos_msb, _pos_lsb) \
@@ -230,6 +237,36 @@ struct edid1_info {
 	unsigned char checksum;
 } __attribute__ ((__packed__));
 
+enum edid_cea861_db_types {
+	EDID_CEA861_DB_AUDIO = 0x01,
+	EDID_CEA861_DB_VIDEO = 0x02,
+	EDID_CEA861_DB_VENDOR = 0x03,
+	EDID_CEA861_DB_SPEAKER = 0x04,
+};
+
+struct edid_cea861_info {
+	unsigned char extension_tag;
+#define EDID_CEA861_EXTENSION_TAG	0x02
+	unsigned char revision;
+	unsigned char dtd_offset;
+	unsigned char dtd_count;
+#define EDID_CEA861_SUPPORTS_UNDERSCAN(_x) \
+	GET_BIT(((_x).dtd_count), 7)
+#define EDID_CEA861_SUPPORTS_BASIC_AUDIO(_x) \
+	GET_BIT(((_x).dtd_count), 6)
+#define EDID_CEA861_SUPPORTS_YUV444(_x) \
+	GET_BIT(((_x).dtd_count), 5)
+#define EDID_CEA861_SUPPORTS_YUV422(_x) \
+	GET_BIT(((_x).dtd_count), 4)
+#define EDID_CEA861_DTD_COUNT(_x) \
+	GET_BITS(((_x).dtd_count), 3, 0)
+	unsigned char data[124];
+#define EDID_CEA861_DB_TYPE(_x, offset) \
+	GET_BITS((_x).data[offset], 7, 5)
+#define EDID_CEA861_DB_LEN(_x, offset) \
+	GET_BITS((_x).data[offset], 4, 0)
+} __attribute__ ((__packed__));
+
 /**
  * Print the EDID info.
  *
@@ -268,4 +305,20 @@ int edid_get_ranges(struct edid1_info *edid, unsigned int *hmin,
 		    unsigned int *hmax, unsigned int *vmin,
 		    unsigned int *vmax);
 
+struct display_timing;
+
+/**
+ * edid_get_timing() - Get basic digital display parameters
+ *
+ * @param buf		Buffer containing EDID data
+ * @param buf_size	Size of buffer in bytes
+ * @param timing	Place to put preferring timing information
+ * @param panel_bits_per_colourp	Place to put the number of bits per
+ *			colour supported by the panel. This will be set to
+ *			-1 if not available
+ * @return 0 if timings are OK, -ve on error
+ */
+int edid_get_timing(u8 *buf, int buf_size, struct display_timing *timing,
+		    int *panel_bits_per_colourp);
+
 #endif /* __EDID_H_ */