diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cec.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/cec.h b/include/linux/cec.h index 3f2f076027b1..9c87711c0e1c 100644 --- a/include/linux/cec.h +++ b/include/linux/cec.h @@ -396,6 +396,8 @@ struct cec_log_addrs { #define CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK (1 << 0) /* Passthrough RC messages to the input subsystem */ #define CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU (1 << 1) +/* CDC-Only device: supports only CDC messages */ +#define CEC_LOG_ADDRS_FL_CDC_ONLY (1 << 2) /* Events */ @@ -1016,4 +1018,54 @@ struct cec_event { #define CEC_OP_HPD_ERROR_OTHER 3 #define CEC_OP_HPD_ERROR_NONE_NO_VIDEO 4 +/* End of Messages */ + +/* Helper functions to identify the 'special' CEC devices */ + +static inline bool cec_is_2nd_tv(const struct cec_log_addrs *las) +{ + /* + * It is a second TV if the logical address is 14 or 15 and the + * primary device type is a TV. + */ + return las->num_log_addrs && + las->log_addr[0] >= CEC_LOG_ADDR_SPECIFIC && + las->primary_device_type[0] == CEC_OP_PRIM_DEVTYPE_TV; +} + +static inline bool cec_is_processor(const struct cec_log_addrs *las) +{ + /* + * It is a processor if the logical address is 12-15 and the + * primary device type is a Processor. + */ + return las->num_log_addrs && + las->log_addr[0] >= CEC_LOG_ADDR_BACKUP_1 && + las->primary_device_type[0] == CEC_OP_PRIM_DEVTYPE_PROCESSOR; +} + +static inline bool cec_is_switch(const struct cec_log_addrs *las) +{ + /* + * It is a switch if the logical address is 15 and the + * primary device type is a Switch and the CDC-Only flag is not set. + */ + return las->num_log_addrs == 1 && + las->log_addr[0] == CEC_LOG_ADDR_UNREGISTERED && + las->primary_device_type[0] == CEC_OP_PRIM_DEVTYPE_SWITCH && + !(las->flags & CEC_LOG_ADDRS_FL_CDC_ONLY); +} + +static inline bool cec_is_cdc_only(const struct cec_log_addrs *las) +{ + /* + * It is a CDC-only device if the logical address is 15 and the + * primary device type is a Switch and the CDC-Only flag is set. + */ + return las->num_log_addrs == 1 && + las->log_addr[0] == CEC_LOG_ADDR_UNREGISTERED && + las->primary_device_type[0] == CEC_OP_PRIM_DEVTYPE_SWITCH && + (las->flags & CEC_LOG_ADDRS_FL_CDC_ONLY); +} + #endif |