2.8. ioctl CEC_ADAP_G_CONNECTOR_INFO

2.8.1. Name

CEC_ADAP_G_CONNECTOR_INFO - Query HDMI connector information

2.8.2. Synopsis

CEC_ADAP_G_CONNECTOR_INFO

int ioctl(int fd, CEC_ADAP_G_CONNECTOR_INFO, struct cec_connector_info *argp)

2.8.3. Arguments

fd

File descriptor returned by open().

argp

2.8.4. Description

Using this ioctl an application can learn which HDMI connector this CEC device corresponds to. While calling this ioctl the application should provide a pointer to a cec_connector_info struct which will be populated by the kernel with the info provided by the adapter’s driver. This ioctl is only available if the CEC_CAP_CONNECTOR_INFO capability is set.

type cec_connector_info

struct cec_connector_info

__u32	type	The type of connector this adapter is associated with.
union {	(anonymous)
struct cec_drm_connector_info	drm	struct cec_drm_connector_info
}

Connector types

CEC_CONNECTOR_TYPE_NO_CONNECTOR	0	No connector is associated with the adapter/the information is not provided by the driver.
CEC_CONNECTOR_TYPE_DRM	1	Indicates that a DRM connector is associated with this adapter. Information about the connector can be found in struct cec_drm_connector_info.

type cec_drm_connector_info

struct cec_drm_connector_info

__u32	card_no	DRM card number: the number from a card’s path, e.g. 0 in case of /dev/card0.
__u32	connector_id	DRM connector ID.