#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) \
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
#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__));
/**
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_ */