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media: cec: add optional adap_configured callback

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This new optional callback is called when the adapter is fully configured
or fully unconfigured. Some drivers may have to take action when this
happens.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans Verkuil 2022-02-03 12:11:15 +00:00 committed by Mauro Carvalho Chehab
parent dad272bd03
commit f1b5716430
3 changed files with 15 additions and 1 deletions
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13
Documentation/driver-api/media/cec-core.rst
View File

@ -109,6 +109,7 @@ your driver:
int (*adap_monitor_all_enable)(struct cec_adapter *adap, bool enable);
int (*adap_monitor_pin_enable)(struct cec_adapter *adap, bool enable);
int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr);
void (*adap_configured)(struct cec_adapter *adap, bool configured);
int (*adap_transmit)(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *msg);
void (*adap_status)(struct cec_adapter *adap, struct seq_file *file);
@ -117,7 +118,7 @@ your driver:
/* Error injection callbacks */
...
/* High-level callbacks */
/* High-level callback */
...
};
@ -178,6 +179,16 @@ can receive directed messages to that address.
Note that adap_log_addr must return 0 if logical_addr is CEC_LOG_ADDR_INVALID.
Called when the adapter is fully configured or unconfigured::
void (*adap_configured)(struct cec_adapter *adap, bool configured);
If configured == true, then the adapter is fully configured, i.e. all logical
addresses have been successfully claimed. If configured == false, then the
adapter is unconfigured. If the driver has to take specific actions after
(un)configuration, then that can be done through this optional callback.
To transmit a new message::
int (*adap_transmit)(struct cec_adapter *adap, u8 attempts,

2
drivers/media/cec/core/cec-adap.c
View File

@ -1336,6 +1336,7 @@ static void cec_adap_unconfigure(struct cec_adapter *adap)
cec_flush(adap);
wake_up_interruptible(&adap->kthread_waitq);
cec_post_state_event(adap);
call_void_op(adap, adap_configured, false);
}
/*
@ -1517,6 +1518,7 @@ configured:
adap->kthread_config = NULL;
complete(&adap->config_completion);
mutex_unlock(&adap->lock);
call_void_op(adap, adap_configured, true);
return 0;
unconfigure:

1
include/media/cec.h
View File

@ -118,6 +118,7 @@ struct cec_adap_ops {
int (*adap_monitor_all_enable)(struct cec_adapter *adap, bool enable);
int (*adap_monitor_pin_enable)(struct cec_adapter *adap, bool enable);
int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr);
void (*adap_configured)(struct cec_adapter *adap, bool configured);
int (*adap_transmit)(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *msg);
void (*adap_status)(struct cec_adapter *adap, struct seq_file *file);