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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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056f2821b6
Add support for the Extron DA HD 4K Plus series of 4K HDMI Distrubution Amplifiers (aka HDMI Splitters). These devices support CEC and this driver adds support for the CEC protocol for both the input and all outputs (2, 4 or 6 outputs, depending on the model). It also exports the EDID from the outputs and allows reading and setting the EDID of the input. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2021-2024 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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*/
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#ifndef _EXTRON_DA_HD_4K_PLUS_H_
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#define _EXTRON_DA_HD_4K_PLUS_H_
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#include <linux/kthread.h>
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#include <linux/serio.h>
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#include <linux/workqueue.h>
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#include <media/cec.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-dv-timings.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-ioctl.h>
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#include "cec-splitter.h"
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#define DATA_SIZE 256
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#define PING_PERIOD (15 * HZ)
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#define NUM_MSGS CEC_MAX_MSG_RX_QUEUE_SZ
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#define MAX_PORTS (1 + 6)
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#define MAX_EDID_BLOCKS 2
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struct extron;
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struct extron_port {
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struct cec_splitter_port port;
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struct device *dev;
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struct cec_adapter *adap;
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struct video_device vdev;
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struct v4l2_ctrl_handler hdl;
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struct v4l2_ctrl *ctrl_rx_power_present;
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struct v4l2_ctrl *ctrl_tx_hotplug;
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struct v4l2_ctrl *ctrl_tx_edid_present;
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bool is_input;
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char direction;
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char name[26];
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unsigned char edid[MAX_EDID_BLOCKS * 128];
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unsigned char edid_tmp[MAX_EDID_BLOCKS * 128];
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unsigned int edid_blocks;
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bool read_edid;
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struct extron *extron;
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struct work_struct irq_work;
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struct completion cmd_done;
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const char *response;
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unsigned int cmd_error;
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struct cec_msg rx_msg[NUM_MSGS];
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unsigned int rx_msg_cur_idx, rx_msg_num;
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/* protect rx_msg_cur_idx and rx_msg_num */
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spinlock_t msg_lock;
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u32 tx_done_status;
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bool update_phys_addr;
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u16 phys_addr;
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bool cec_was_registered;
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bool disconnected;
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bool update_has_signal;
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bool has_signal;
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bool update_has_edid;
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bool has_edid;
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bool has_4kp30;
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bool has_4kp60;
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bool has_qy;
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bool has_qs;
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u8 est_i, est_ii;
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/* locks access to the video_device */
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struct mutex video_lock;
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};
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struct extron {
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struct cec_splitter splitter;
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struct device *dev;
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struct serio *serio;
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/* locks access to serio */
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struct mutex serio_lock;
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unsigned int num_ports;
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unsigned int num_in_ports;
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unsigned int num_out_ports;
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char unit_name[32];
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char unit_type[64];
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char unit_fw_version[32];
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char unit_cec_engine_version[32];
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struct extron_port *ports[MAX_PORTS];
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struct cec_splitter_port *splitter_ports[MAX_PORTS];
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struct v4l2_device v4l2_dev;
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bool hpd_never_low;
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struct task_struct *kthread_setup;
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struct delayed_work work_update_edid;
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/* serializes EDID reading */
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struct mutex edid_lock;
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unsigned int edid_bytes_read;
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struct extron_port *edid_port;
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struct completion edid_completion;
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bool edid_reading;
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bool is_ready;
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struct completion cmd_done;
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const char *response;
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unsigned int cmd_error;
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char data[DATA_SIZE];
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unsigned int len;
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char reply[DATA_SIZE];
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char buf[DATA_SIZE];
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unsigned int idx;
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};
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#endif
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