Subversion Repositories Kolibri OS

#define EDID_LENGTH 128

#define DI_EXT	    0x40

/* ELD Header Block */

#define DRM_ELD_HEADER_BLOCK_SIZE	4

#define DRM_ELD_VER			0

# define DRM_ELD_VER_SHIFT		3

# define DRM_ELD_VER_MASK		(0x1f << 3)

#define DRM_ELD_BASELINE_ELD_LEN	2	/* in dwords! */

/* ELD Baseline Block for ELD_Ver == 2 */

#define DRM_ELD_CEA_EDID_VER_MNL	4

# define DRM_ELD_CEA_EDID_VER_SHIFT	5

# define DRM_ELD_CEA_EDID_VER_MASK	(7 << 5)

# define DRM_ELD_CEA_EDID_VER_NONE	(0 << 5)

# define DRM_ELD_CEA_EDID_VER_CEA861	(1 << 5)

# define DRM_ELD_CEA_EDID_VER_CEA861A	(2 << 5)

# define DRM_ELD_CEA_EDID_VER_CEA861BCD	(3 << 5)

# define DRM_ELD_MNL_SHIFT		0

# define DRM_ELD_MNL_MASK		(0x1f << 0)

#define DRM_ELD_SAD_COUNT_CONN_TYPE	5

# define DRM_ELD_SAD_COUNT_SHIFT	4

# define DRM_ELD_SAD_COUNT_MASK		(0xf << 4)

# define DRM_ELD_CONN_TYPE_SHIFT	2

# define DRM_ELD_CONN_TYPE_MASK		(3 << 2)

# define DRM_ELD_CONN_TYPE_HDMI		(0 << 2)

# define DRM_ELD_CONN_TYPE_DP		(1 << 2)

# define DRM_ELD_SUPPORTS_AI		(1 << 1)

# define DRM_ELD_SUPPORTS_HDCP		(1 << 0)

#define DRM_ELD_AUD_SYNCH_DELAY		6	/* in units of 2 ms */

# define DRM_ELD_AUD_SYNCH_DELAY_MAX	0xfa	/* 500 ms */

#define DRM_ELD_SPEAKER			7

# define DRM_ELD_SPEAKER_RLRC		(1 << 6)

# define DRM_ELD_SPEAKER_FLRC		(1 << 5)

# define DRM_ELD_SPEAKER_RC		(1 << 4)

# define DRM_ELD_SPEAKER_RLR		(1 << 3)

# define DRM_ELD_SPEAKER_FC		(1 << 2)

# define DRM_ELD_SPEAKER_LFE		(1 << 1)

# define DRM_ELD_SPEAKER_FLR		(1 << 0)

#define DRM_ELD_PORT_ID			8	/* offsets 8..15 inclusive */

# define DRM_ELD_PORT_ID_LEN		8

#define DRM_ELD_MANUFACTURER_NAME0	16

#define DRM_ELD_MANUFACTURER_NAME1	17

#define DRM_ELD_PRODUCT_CODE0		18

#define DRM_ELD_PRODUCT_CODE1		19

#define DRM_ELD_MONITOR_NAME_STRING	20	/* offsets 20..(20+mnl-1) inclusive */

#define DRM_ELD_CEA_SAD(mnl, sad)	(20 + (mnl) + 3 * (sad))

/**

 * drm_eld_mnl - Get ELD monitor name length in bytes.

 * @eld: pointer to an eld memory structure with mnl set

 */

static inline int drm_eld_mnl(const uint8_t *eld)

{

	return (eld[DRM_ELD_CEA_EDID_VER_MNL] & DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;

}

/**

 * drm_eld_sad_count - Get ELD SAD count.

 * @eld: pointer to an eld memory structure with sad_count set

 */

static inline int drm_eld_sad_count(const uint8_t *eld)

{

	return (eld[DRM_ELD_SAD_COUNT_CONN_TYPE] & DRM_ELD_SAD_COUNT_MASK) >>

		DRM_ELD_SAD_COUNT_SHIFT;

}

/**

 * drm_eld_calc_baseline_block_size - Calculate baseline block size in bytes

 * @eld: pointer to an eld memory structure with mnl and sad_count set

 *

 * This is a helper for determining the payload size of the baseline block, in

 * bytes, for e.g. setting the Baseline_ELD_Len field in the ELD header block.

 */

static inline int drm_eld_calc_baseline_block_size(const uint8_t *eld)

{

	return DRM_ELD_MONITOR_NAME_STRING - DRM_ELD_HEADER_BLOCK_SIZE +

		drm_eld_mnl(eld) + drm_eld_sad_count(eld) * 3;

}

/**

 * drm_eld_size - Get ELD size in bytes

 * @eld: pointer to a complete eld memory structure

 *

 * The returned value does not include the vendor block. It's vendor specific,

 * and comprises of the remaining bytes in the ELD memory buffer after

 * drm_eld_size() bytes of header and baseline block.

 *

 * The returned value is guaranteed to be a multiple of 4.

 */

static inline int drm_eld_size(const uint8_t *eld)

{

	return DRM_ELD_HEADER_BLOCK_SIZE + eld[DRM_ELD_BASELINE_ELD_LEN] * 4;

}

struct edid *drm_do_get_edid(struct drm_connector *connector,

	int (*get_edid_block)(void *data, u8 *buf, unsigned int block,

			      size_t len),

	void *data);