From d0304e9cb9f633eb4de1ecbb4e7328ae745198a8 Mon Sep 17 00:00:00 2001
From: Chenyuan Yang <cy1yang@outlook.com>
Date: Fri, 29 Dec 2023 21:12:56 -0600
Subject: sys/linux: add the descriptions for the CEC device

---
 sys/linux/dev_cec.txt | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 sys/linux/dev_cec.txt

(limited to 'sys/linux/dev_cec.txt')

diff --git a/sys/linux/dev_cec.txt b/sys/linux/dev_cec.txt
new file mode 100644
index 000000000..c8a47e5e6
--- /dev/null
+++ b/sys/linux/dev_cec.txt
@@ -0,0 +1,98 @@
+# Copyright 2024 syzkaller project authors. All rights reserved.
+# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+include <uapi/asm/ioctl.h>
+include <uapi/linux/cec.h>
+
+resource fd_cec[fd]
+
+syz_open_dev$cec(dev ptr[in, string["/dev/cec#"]], id proc[0, 1], flags flags[open_flags]) fd_cec
+
+ioctl$CEC_ADAP_G_CAPS(fd fd_cec, cmd const[CEC_ADAP_G_CAPS], arg ptr[out, cec_caps])
+ioctl$CEC_ADAP_G_PHYS_ADDR(fd fd_cec, cmd const[CEC_ADAP_G_PHYS_ADDR], arg ptr[out, int16])
+ioctl$CEC_ADAP_S_PHYS_ADDR(fd fd_cec, cmd const[CEC_ADAP_S_PHYS_ADDR], arg ptr[in, int16])
+ioctl$CEC_ADAP_G_LOG_ADDRS(fd fd_cec, cmd const[CEC_ADAP_G_LOG_ADDRS], arg ptr[out, cec_log_addrs])
+ioctl$CEC_ADAP_S_LOG_ADDRS(fd fd_cec, cmd const[CEC_ADAP_S_LOG_ADDRS], arg ptr[inout, cec_log_addrs])
+ioctl$CEC_ADAP_G_CONNECTOR_INFO(fd fd_cec, cmd const[CEC_ADAP_G_CONNECTOR_INFO], arg ptr[out, cec_connector_info])
+ioctl$CEC_TRANSMIT(fd fd_cec, cmd const[CEC_TRANSMIT], arg ptr[inout, cec_msg])
+ioctl$CEC_RECEIVE(fd fd_cec, cmd const[CEC_RECEIVE], arg ptr[inout, cec_msg])
+ioctl$CEC_DQEVENT(fd fd_cec, cmd const[CEC_DQEVENT], arg ptr[out, cec_event])
+ioctl$CEC_G_MODE(fd fd_cec, cmd const[CEC_G_MODE], arg ptr[out, int32])
+ioctl$CEC_S_MODE(fd fd_cec, cmd const[CEC_S_MODE], arg ptr[in, int32])
+
+cec_caps {
+	driver			array[int8, 32]
+	name			array[int8, 32]
+	available_log_addrs	int32
+	capabilities		int32
+	version			int32
+}
+
+cec_log_addrs {
+	log_addr		array[int8, CEC_MAX_LOG_ADDRS]
+	log_addr_mask		int16
+	cec_version		int8
+	num_log_addrs		int8
+	vendor_id		int32
+	flags			int32
+	osd_name		array[int8, 15]
+	primary_device_type	array[int8, CEC_MAX_LOG_ADDRS]
+	log_addr_type		array[int8, CEC_MAX_LOG_ADDRS]
+	all_device_types	array[int8, CEC_MAX_LOG_ADDRS]
+	features		array[array[int8, 12], CEC_MAX_LOG_ADDRS]
+}
+
+cec_connector_info {
+	type	int32
+	u	cec_connector_info_union
+}
+
+cec_msg {
+	tx_ts			int64
+	rx_ts			int64
+	len			int32
+	timeout			int32
+	sequence		int32
+	flags			int32
+	msg			array[int8, CEC_MAX_MSG_SIZE]
+	reply			int8
+	rx_status		int8
+	tx_status		int8
+	tx_arb_lost_cnt		int8
+	tx_nack_cnt		int8
+	tx_low_drive_cnt	int8
+	tx_error_cnt		int8
+}
+
+cec_event {
+	ts	int64
+	event	int32
+	flags	int32
+	union	cec_event_union
+}
+
+cec_connector_info_union [
+	drm	cec_drm_connector_info
+	raw	array[int32, 16]
+]
+
+cec_event_union [
+	state_change	cec_event_state_change
+	lost_msgs	cec_event_lost_msgs
+	raw		array[int32, 16]
+]
+
+cec_drm_connector_info {
+	card_no		int32
+	connector_id	drm_connector_id
+}
+
+cec_event_state_change {
+	phys_addr	int16
+	log_addr_mask	int16
+	have_conn_info	int16
+}
+
+cec_event_lost_msgs {
+	lost_msgs	int32
+}
-- 
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