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| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-10-11 10:17:59 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-11-23 12:59:24 +0100 |
| commit | 632b8b044a940e415c6d9bd5235778b0db28add1 (patch) | |
| tree | 879ce71e7763b96600414dbcebd810bed7283c25 /include/media | |
| parent | bbd267daf4fc831f58bf4a2530a8b64881779e6a (diff) | |
| download | linux-632b8b044a940e415c6d9bd5235778b0db28add1.tar.gz linux-632b8b044a940e415c6d9bd5235778b0db28add1.tar.bz2 linux-632b8b044a940e415c6d9bd5235778b0db28add1.zip | |
media: cec: core: count low-drive, error and arb-lost conditions
Count how many Low Drive, Error and Arbitration Lost transmit
status errors occurred, and expose that in debugfs.
Also log the first 8 transmits that result in Low Drive or Error
conditions. That really should not happen with well-behaved CEC devices
and good HDMI cables.
This is useful to detect and debug HDMI cable issues.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/cec.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/include/media/cec.h b/include/media/cec.h index 53e4b2eb2b26..d77982685116 100644 --- a/include/media/cec.h +++ b/include/media/cec.h @@ -207,7 +207,20 @@ struct cec_adap_ops { * passthrough mode. * @log_addrs: current logical addresses * @conn_info: current connector info - * @tx_timeouts: number of transmit timeouts + * @tx_timeout_cnt: count the number of Timed Out transmits. + * Reset to 0 when this is reported in cec_adap_status(). + * @tx_low_drive_cnt: count the number of Low Drive transmits. + * Reset to 0 when this is reported in cec_adap_status(). + * @tx_error_cnt: count the number of Error transmits. + * Reset to 0 when this is reported in cec_adap_status(). + * @tx_arb_lost_cnt: count the number of Arb Lost transmits. + * Reset to 0 when this is reported in cec_adap_status(). + * @tx_low_drive_log_cnt: number of logged Low Drive transmits since the + * adapter was enabled. Used to avoid flooding the kernel + * log if this happens a lot. + * @tx_error_log_cnt: number of logged Error transmits since the adapter was + * enabled. Used to avoid flooding the kernel log if this + * happens a lot. * @notifier: CEC notifier * @pin: CEC pin status struct * @cec_dir: debugfs cec directory @@ -262,7 +275,12 @@ struct cec_adapter { struct cec_log_addrs log_addrs; struct cec_connector_info conn_info; - u32 tx_timeouts; + u32 tx_timeout_cnt; + u32 tx_low_drive_cnt; + u32 tx_error_cnt; + u32 tx_arb_lost_cnt; + u32 tx_low_drive_log_cnt; + u32 tx_error_log_cnt; #ifdef CONFIG_CEC_NOTIFIER struct cec_notifier *notifier; |