Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ad283e50 authored by Narender Ankam's avatar Narender Ankam
Browse files

msm: mdss: hdmi: parse extended EDID block map 



As part of EDID parser, add support to parse extended EDID
Block Map (0xf0) block and parse all subsequent CEA (0x02)
extended EDID Blocks.

Change-Id: I581efae59dde3abf6f297d5a2519ac0088554b64
Signed-off-by: default avatarNarender Ankam <nankam@codeaurora.org>
parent 10da0194

drivers/video/fbdev/msm/mdss_hdmi_edid.c

+32 −21
Original line number Diff line number Diff line
@@ -2290,6 +2290,7 @@ int hdmi_edid_parser(void *input) 
	u16 ieee_reg_id;

	int status = 0;

	u32 i = 0;

	u32 cea_idx = 1;

	struct hdmi_edid_ctrl *edid_ctrl = (struct hdmi_edid_ctrl *)input;



	if (!edid_ctrl) {
@@ -2316,7 +2317,7 @@ int hdmi_edid_parser(void *input) 


	/* EDID_CEA_EXTENSION_FLAG[0x7E] - CEC extension byte */

	num_of_cea_blocks = edid_buf[EDID_BLOCK_SIZE - 2];

	DEV_DBG("%s: No. of CEA blocks is  [%u]\n", __func__,

	DEV_DBG("%s: No. of CEA/Extended EDID blocks is  [%u]\n", __func__,

		num_of_cea_blocks);



	/* Find out any CEA extension blocks following block 0 */
@@ -2335,17 +2336,26 @@ int hdmi_edid_parser(void *input) 
		num_of_cea_blocks = MAX_EDID_BLOCKS - 1;

	}



	if (edid_buf[EDID_BLOCK_SIZE] == 0xF0) {

		DEV_DBG("%s: Extended EDID Block Map found\n", __func__);

		edid_buf += EDID_BLOCK_SIZE;

		cea_idx++;

	}



	for (i = cea_idx; i <= num_of_cea_blocks; i++) {



		/* check for valid CEA block */

		if (edid_buf[EDID_BLOCK_SIZE] != 2) {

		DEV_ERR("%s: Invalid CEA block\n", __func__);

		num_of_cea_blocks = 0;

		goto bail;

			DEV_ERR("%s: Not a CEA block\n", __func__);

			edid_buf += EDID_BLOCK_SIZE;

			continue;

		}



		/* goto to CEA extension edid block */

		edid_buf += EDID_BLOCK_SIZE;



	ieee_reg_id = hdmi_edid_extract_ieee_reg_id(edid_ctrl, edid_buf);

		ieee_reg_id = hdmi_edid_extract_ieee_reg_id(edid_ctrl,

				edid_buf);

		DEV_DBG("%s: ieee_reg_id = 0x%08x\n", __func__, ieee_reg_id);

		if (ieee_reg_id == EDID_IEEE_REG_ID)

			edid_ctrl->sink_mode = SINK_MODE_HDMI;
@@ -2359,6 +2369,7 @@ int hdmi_edid_parser(void *input) 
		hdmi_edid_extract_audio_data_blocks(edid_ctrl, edid_buf);

		hdmi_edid_extract_3d_present(edid_ctrl, edid_buf);

		hdmi_edid_extract_extended_data_blocks(edid_ctrl, edid_buf);

	}



bail:

	for (i = 1; i <= num_of_cea_blocks; i++) {