diff options
| author | Martin Bugge <marbugge@cisco.com> | 2014-01-24 17:50:05 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-02-04 15:57:18 +0400 |
| commit | b60908a4e5164835678728bf185af9807e0e4560 (patch) | |
| tree | f1909269d6647a9a3363449f06d59a05bc2c53ed /drivers | |
| parent | 81ba0a4e0ba4f92573440b8c455fc0d30f111092 (diff) | |
| download | linux-b60908a4e5164835678728bf185af9807e0e4560.tar.xz | |
[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: Martin Bugge <marbugge@cisco.com>
Cc: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/i2c/adv7842.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index 3aa1a7c750f1..209b1753b701 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -2191,7 +2191,8 @@ static void print_avi_infoframe(struct v4l2_subdev *sd) { int i; uint8_t buf[14]; - uint8_t avi_inf_len; + u8 avi_len; + u8 avi_ver; struct avi_info_frame avi; 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) { - /* Note: the ADV7842 calculated incorrect checksums for InfoFrames - with a length of 14 or 15. See the ADV7842 Register Settings - Recommendations document for more details. */ - v4l2_info(sd, "AVI infoframe checksum error\n"); - return; + v4l2_info(sd, "AVI infoframe checksum error has occurred earlier\n"); + io_write(sd, 0x8a, 0x10); /* clear AVI_INF_CKS_ERR_RAW */ + if (io_read(sd, 0x88) & 0x10) { + v4l2_info(sd, "AVI infoframe checksum error still present\n"); + 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", - infoframe_read(sd, 0xe1), avi_inf_len); + avi_ver, avi_len); - if (infoframe_read(sd, 0xe1) != 0x02) + if (avi_ver != 0x02) return; for (i = 0; i < 14; i++) |