diff options
| author | Deborah Brouwer <deborahbrouwer3563@gmail.com> | 2021-08-26 05:44:11 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-09-30 10:07:55 +0200 |
| commit | c6c709ee55ec73a0d794cac4c711b8078f71b884 (patch) | |
| tree | fc6b234c9acfab821345707fa284e107e03a991f /drivers/media/test-drivers/vivid/vivid-cec.h | |
| parent | 695fb9c6b06417b26e4c9d70a12b0a6d3805dee6 (diff) | |
media: vivid: add signal-free time for cec message xfer
Currently, the vivid emulation of cec message transmission does not force
adapters to wait until the cec bus has been signal-free for a certain
number of bit periods before transmitting or re-transmitting a message.
Without enforcing the signal-free time requirements, adapters do not share
the bus very well and some messages are sent too quickly while other
messages are lost. By emulating a signal-free time and forcing adapters
to wait their turn to transmit, the vivid emulation of cec transmission
is much more reliable.
Signed-off-by: Deborah Brouwer <deborahbrouwer3563@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/test-drivers/vivid/vivid-cec.h')
| -rw-r--r-- | drivers/media/test-drivers/vivid/vivid-cec.h | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/media/test-drivers/vivid/vivid-cec.h b/drivers/media/test-drivers/vivid/vivid-cec.h index 7524ed48a914..b2bcddb50b83 100644 --- a/drivers/media/test-drivers/vivid/vivid-cec.h +++ b/drivers/media/test-drivers/vivid/vivid-cec.h @@ -9,12 +9,5 @@ struct cec_adapter *vivid_cec_alloc_adap(struct vivid_dev *dev, unsigned int idx, bool is_source); -void vivid_cec_bus_free_work(struct vivid_dev *dev); - -#else - -static inline void vivid_cec_bus_free_work(struct vivid_dev *dev) -{ -} - +int vivid_cec_bus_thread(void *_dev); #endif |