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hdmicec.h
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hdmicec.h
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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef HDMI_CEC_UEVENT_H
#define HDMI_CEC_UEVENT_H
#include <linux/ioctl.h>
//struct cec_framedata {
// char srcdestaddr;
// char opcode;
// char args[CEC_MESSAGE_BODY_MAX_LENGTH];
// char argcount;
// char returnval;
//};
#define HDMI_CEC_VERSION 0x05
#define HDMI_CEC_VENDOR_ID 0x000001
#define HDMI_CEC_PORT_ID 0x000001
#define HDMI_CEC_HAL_VERSION "1.0"
#define CEC_MAX_LOG_ADDRS 4
#define CEC_MAX_MSG_SIZE 16
#define CEC_MODE_MONITOR (0xe << 4)
#define CEC_MODE_INITIATOR (0x1 << 0)
#define CEC_MODE_EXCL_FOLLOWER (0x2 << 4)
#define CEC_MODE_EXCL_FOLLOWER_PASSTHRU (0x3 << 4)
#define CEC_LOG_ADDR_INVALID 0xff
#define CEC_PHYS_ADDR_INVALID 0xffff
#define CEC_LOG_ADDR_TYPE_TV 0
#define CEC_LOG_ADDR_TYPE_RECORD 1
#define CEC_LOG_ADDR_TYPE_TUNER 2
#define CEC_LOG_ADDR_TYPE_PLAYBACK 3
#define CEC_LOG_ADDR_TYPE_AUDIOSYSTEM 4
#define CEC_LOG_ADDR_TYPE_SPECIFIC 5
#define CEC_LOG_ADDR_TYPE_UNREGISTERED 6
/* Events */
/* event flags */
#define CEC_EVENT_FL_INITIAL_STATE (1 << 0)
#define CEC_EVENT_FL_DROPPED_EVENTS (1 << 1)
/* Event that occurs when the adapter state changes */
#define CEC_EVENT_STATE_CHANGE 1
/*
* This event is sent when messages are lost because the application
* didn't empty the message queue in time
*/
#define CEC_EVENT_LOST_MSGS 2
#define CEC_EVENT_PIN_CEC_LOW 3
#define CEC_EVENT_PIN_CEC_HIGH 4
#define CEC_EVENT_PIN_HPD_LOW 5
#define CEC_EVENT_PIN_HPD_HIGH 6
/* Primary Device Type Operand (prim_devtype) */
#define CEC_OP_PRIM_DEVTYPE_TV 0
#define CEC_OP_PRIM_DEVTYPE_RECORD 1
#define CEC_OP_PRIM_DEVTYPE_TUNER 3
#define CEC_OP_PRIM_DEVTYPE_PLAYBACK 4
#define CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM 5
#define CEC_OP_PRIM_DEVTYPE_SWITCH 6
#define CEC_OP_PRIM_DEVTYPE_PROCESSOR 7
/* cec_msg tx/rx_status field */
#define CEC_TX_STATUS_OK (1 << 0)
#define CEC_TX_STATUS_ARB_LOST (1 << 1)
#define CEC_TX_STATUS_NACK (1 << 2)
#define CEC_TX_STATUS_LOW_DRIVE (1 << 3)
#define CEC_TX_STATUS_ERROR (1 << 4)
#define CEC_TX_STATUS_MAX_RETRIES (1 << 5)
#define CEC_RX_STATUS_OK (1 << 0)
#define CEC_RX_STATUS_TIMEOUT (1 << 1)
#define CEC_RX_STATUS_FEATURE_ABORT (1 << 2)
struct cec_msg {
__u64 tx_ts;
__u64 rx_ts;
__u32 len;
__u32 timeout;
__u32 sequence;
__u32 flags;
__u8 msg[CEC_MAX_MSG_SIZE];
__u8 reply;
__u8 rx_status;
__u8 tx_status;
__u8 tx_arb_lost_cnt;
__u8 tx_nack_cnt;
__u8 tx_low_drive_cnt;
__u8 tx_error_cnt;
};
struct cec_event_lost_msgs {
__u32 lost_msgs;
};
struct cec_event_state_change {
__u16 phys_addr;
__u16 log_addr_mask;
};
struct cec_event {
__u64 ts;
__u32 event;
__u32 flags;
union {
struct cec_event_state_change state_change;
struct cec_event_lost_msgs lost_msgs;
__u32 raw[16];
};
};
struct cec_log_addrs {
__u8 log_addr[CEC_MAX_LOG_ADDRS];
__u16 log_addr_mask;
__u8 cec_version;
__u8 num_log_addrs;
__u32 vendor_id;
__u32 flags;
char osd_name[15];
__u8 primary_device_type[CEC_MAX_LOG_ADDRS];
__u8 log_addr_type[CEC_MAX_LOG_ADDRS];
/* CEC 2.0 */
__u8 all_device_types[CEC_MAX_LOG_ADDRS];
__u8 features[CEC_MAX_LOG_ADDRS][12];
};
/* ioctls */
/* Adapter capabilities */
#define CEC_ADAP_G_CAPS _IOWR('a', 0, struct cec_caps)
/*
* phys_addr is either 0 (if this is the CEC root device)
* or a valid physical address obtained from the sink's EDID
* as read by this CEC device (if this is a source device)
* or a physical address obtained and modified from a sink
* EDID and used for a sink CEC device.
* If nothing is connected, then phys_addr is 0xffff.
* See HDMI 1.4b, section 8.7 (Physical Address).
*
* The CEC_ADAP_S_PHYS_ADDR ioctl may not be available if that is handled
* internally.
*/
#define CEC_ADAP_G_PHYS_ADDR _IOR('a', 1, __u16)
#define CEC_ADAP_S_PHYS_ADDR _IOW('a', 2, __u16)
/*
* Configure the CEC adapter. It sets the device type and which
* logical types it will try to claim. It will return which
* logical addresses it could actually claim.
* An error is returned if the adapter is disabled or if there
* is no physical address assigned.
*/
#define CEC_ADAP_G_LOG_ADDRS _IOR('a', 3, struct cec_log_addrs)
#define CEC_ADAP_S_LOG_ADDRS _IOWR('a', 4, struct cec_log_addrs)
/* Transmit/receive a CEC command */
#define CEC_TRANSMIT _IOWR('a', 5, struct cec_msg)
#define CEC_RECEIVE _IOWR('a', 6, struct cec_msg)
/* Dequeue CEC events */
#define CEC_DQEVENT _IOWR('a', 7, struct cec_event)
/*
* Get and set the message handling mode for this filehandle.
*/
#define CEC_G_MODE _IOR('a', 8, __u32)
#define CEC_S_MODE _IOW('a', 9, __u32)
#define HDMI_STATE_PATH "/sys/class/drm/card0-HDMI-A-1/status"
#define HDMI_DEV_PATH "/dev/cec0"
struct hdmi_cec_context_t {
hdmi_cec_device_t device;
/* our private state goes below here */
event_callback_t event_callback;
void* cec_arg;
struct hdmi_port_info port;
int fd;
bool enable;
bool system_control;
int phy_addr;
bool hotplug;
};
void init_uevent_thread(hdmi_cec_context_t* ctx);
#endif