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Commit b60908a4 authored by Martin Bugge's avatar Martin Bugge Committed by Mauro Carvalho Chehab
Browse files

[media] adv7842: log-status for Audio Video Info frames (AVI) 



Clear any pending AVI checksum-errors.
To be able to display last received AVI.

Signed-off-by: default avatarMartin Bugge <marbugge@cisco.com>
Cc: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 81ba0a4e

drivers/media/i2c/adv7842.c

+12 −9
Original line number Original line Diff line number Diff line
@@ -2191,7 +2191,8 @@ static void print_avi_infoframe(struct v4l2_subdev *sd) 
{

{

	int i;

	int i;

	uint8_t buf[14];

	uint8_t buf[14];

	uint8_t avi_inf_len;

	u8 avi_len;

	u8 avi_ver;

	struct avi_info_frame avi;

	struct avi_info_frame avi;





	if (!(hdmi_read(sd, 0x05) & 0x80)) {

	if (!(hdmi_read(sd, 0x05) & 0x80)) {
@@ -2204,18 +2205,20 @@ static void print_avi_infoframe(struct v4l2_subdev *sd) 
	}

	}





	if (io_read(sd, 0x88) & 0x10) {

	if (io_read(sd, 0x88) & 0x10) {

		/* Note: the ADV7842 calculated incorrect checksums for InfoFrames

		v4l2_info(sd, "AVI infoframe checksum error has occurred earlier\n");

		   with a length of 14 or 15. See the ADV7842 Register Settings

		io_write(sd, 0x8a, 0x10); /* clear AVI_INF_CKS_ERR_RAW */

		   Recommendations document for more details. */

		if (io_read(sd, 0x88) & 0x10) {

		v4l2_info(sd, "AVI infoframe checksum error\n");

			v4l2_info(sd, "AVI infoframe checksum error still present\n");

		return;

			io_write(sd, 0x8a, 0x10); /* clear AVI_INF_CKS_ERR_RAW */

		}

	}

	}





	avi_inf_len = infoframe_read(sd, 0xe2);

	avi_len = infoframe_read(sd, 0xe2);

	avi_ver = infoframe_read(sd, 0xe1);

	v4l2_info(sd, "AVI infoframe version %d (%d byte)\n",

	v4l2_info(sd, "AVI infoframe version %d (%d byte)\n",

		  infoframe_read(sd, 0xe1), avi_inf_len);

		  avi_ver, avi_len);





	if (infoframe_read(sd, 0xe1) != 0x02)

	if (avi_ver != 0x02)

		return;

		return;





	for (i = 0; i < 14; i++)

	for (i = 0; i < 14; i++)