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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2017-06-07 11:46:12 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 06:54:34 -0300 |
| commit | f902c1e95d5dfe5102f8467d69dc51d505f832ee (patch) | |
| tree | 29e8d0abcd8b7c4d67cd69a7b46f0b4abc10bf34 /include/media | |
| parent | 2613cc6fd32c4997d8e9473f8249601a5e088ee7 (diff) | |
| download | linux-f902c1e95d5dfe5102f8467d69dc51d505f832ee.tar.gz linux-f902c1e95d5dfe5102f8467d69dc51d505f832ee.tar.bz2 linux-f902c1e95d5dfe5102f8467d69dc51d505f832ee.zip | |
[media] cec: add CEC_CAP_NEEDS_HPD
Add a new capability CEC_CAP_NEEDS_HPD. If this capability is set
then the hardware can only use CEC if the HDMI Hotplug Detect pin
is high. Such hardware cannot handle the corner case in the CEC specification
where it is possible to transmit messages even if no hotplug signal is
present (needed for some displays that turn off the HPD when in standby,
but still have CEC enabled).
Typically hardware that needs this capability have the HPD wired to the CEC
block, often to a 'power' or 'active' pin.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/cec.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/media/cec.h b/include/media/cec.h index a2e184d1df00..7e32e80b243e 100644 --- a/include/media/cec.h +++ b/include/media/cec.h @@ -164,6 +164,7 @@ struct cec_adapter { u8 available_log_addrs; u16 phys_addr; + bool needs_hpd; bool is_configuring; bool is_configured; u32 monitor_all_cnt; |