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media: media/cec.h: document cec_adapter fields

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Document this core CEC structure.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Hans Verkuil 2020-06-20 12:16:41 +02:00 committed by Mauro Carvalho Chehab
parent 8dd65ed67e
commit e233f81cfc
1 changed files with 49 additions and 0 deletions
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49
include/media/cec.h
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@ -144,6 +144,55 @@ struct cec_adap_ops {
*/
#define CEC_MAX_MSG_TX_QUEUE_SZ (18 * 1)
/**
* struct cec_adapter - cec adapter structure
* @owner: module owner
* @name: name of the CEC adapter
* @devnode: device node for the /dev/cecX device
* @lock: mutex controlling access to this structure
* @rc: remote control device
* @transmit_queue: queue of pending transmits
* @transmit_queue_sz: number of pending transmits
* @wait_queue: queue of transmits waiting for a reply
* @transmitting: CEC messages currently being transmitted
* @transmit_in_progress: true if a transmit is in progress
* @kthread_config: kthread used to configure a CEC adapter
* @config_completion: used to signal completion of the config kthread
* @kthread: main CEC processing thread
* @kthread_waitq: main CEC processing wait_queue
* @ops: cec adapter ops
* @priv: cec driver's private data
* @capabilities: cec adapter capabilities
* @available_log_addrs: maximum number of available logical addresses
* @phys_addr: the current physical address
* @needs_hpd: if true, then the HDMI HotPlug Detect pin must be high
* in order to transmit or receive CEC messages. This is usually a HW
* limitation.
* @is_configuring: the CEC adapter is configuring (i.e. claiming LAs)
* @is_configured: the CEC adapter is configured (i.e. has claimed LAs)
* @cec_pin_is_high: if true then the CEC pin is high. Only used with the
* CEC pin framework.
* @last_initiator: the initiator of the last transmitted message.
* @monitor_all_cnt: number of filehandles monitoring all msgs
* @monitor_pin_cnt: number of filehandles monitoring pin changes
* @follower_cnt: number of filehandles in follower mode
* @cec_follower: filehandle of the exclusive follower
* @cec_initiator: filehandle of the exclusive initiator
* @passthrough: if true, then the exclusive follower is in
* passthrough mode.
* @log_addrs: current logical addresses
* @conn_info: current connector info
* @tx_timeouts: number of transmit timeouts
* @notifier: CEC notifier
* @pin: CEC pin status struct
* @cec_dir: debugfs cec directory
* @status_file: debugfs cec status file
* @error_inj_file: debugfs cec error injection file
* @sequence: transmit sequence counter
* @input_phys: remote control input_phys name
*
* This structure represents a cec adapter.
*/
struct cec_adapter {
struct module *owner;
char name[32];