X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fedid.h;h=a9f2f3d3abff930f42b6e3bcff106a11ea2f6f4f;hb=4125bbcef6a998ce8580a1f5c53c8c93a56a125b;hp=480a773d0f64f49c9d7148f714fbcfc7b4bb7728;hpb=b98d934128bcd98106e764d2f492ac79c38ae53d;p=platform%2Fkernel%2Fu-boot.git diff --git a/include/edid.h b/include/edid.h index 480a773..a9f2f3d 100644 --- a/include/edid.h +++ b/include/edid.h @@ -15,6 +15,13 @@ #include +/* 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) \ @@ -86,6 +93,10 @@ struct edid_detailed_timing { GET_BITS((_x).flags, 4, 3) #define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \ GET_BITS((_x).flags, 2, 1) +#define EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(_x) \ + GET_BIT((_x).flags, 2) +#define EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(_x) \ + GET_BIT((_x).flags, 1) #define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \ GET_BIT((_x).flags, 0) } __attribute__ ((__packed__)); @@ -226,6 +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. * @@ -242,6 +283,15 @@ void edid_print_info(struct edid1_info *edid_info); int edid_check_info(struct edid1_info *info); /** + * Check checksum of a 128 bytes EDID data block + * + * @param edid_block EDID block data + * + * @return 0 on success, or a negative errno on error + */ +int edid_check_checksum(u8 *edid_block); + +/** * Get the horizontal and vertical rate ranges of the monitor. * * @param edid The EDID info @@ -255,4 +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_ */