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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2025 Advanced Micro Devices, Inc.
*/
#ifndef _ISP4_SUBDEV_H_
#define _ISP4_SUBDEV_H_
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>
#include <linux/types.h>
#include <linux/uaccess.h>
#include <media/v4l2-device.h>
#include "isp4_fw_cmd_resp.h"
#include "isp4_hw_reg.h"
#include "isp4_interface.h"
#include "isp4_video.h"
/*
* One is for none sensor specific response which is not used now.
* Another is for sensor specific response
*/
#define ISP4SD_MAX_FW_RESP_STREAM_NUM 2
/* Indicates the ISP status */
enum isp4sd_status {
ISP4SD_STATUS_PWR_OFF,
ISP4SD_STATUS_PWR_ON,
ISP4SD_STATUS_FW_RUNNING,
ISP4SD_STATUS_MAX
};
/* Indicates sensor and output stream status */
enum isp4sd_start_status {
ISP4SD_START_STATUS_OFF,
ISP4SD_START_STATUS_STARTED,
ISP4SD_START_STATUS_START_FAIL,
};
struct isp4sd_img_buf_node {
struct list_head node;
struct isp4if_img_buf_info buf_info;
};
/* This is ISP output after processing Bayer raw sensor input */
struct isp4sd_output_info {
enum isp4sd_start_status start_status;
u32 image_size;
};
/*
* Struct for sensor info used as ISP input or source.
* status: sensor status.
* output_info: ISP output after processing the sensor input.
* start_stream_cmd_sent: indicates if ISP4FW_CMD_ID_START_STREAM was sent
* to firmware.
* buf_sent_cnt: number of buffers sent to receive images.
*/
struct isp4sd_sensor_info {
struct isp4sd_output_info output_info;
enum isp4sd_start_status status;
bool start_stream_cmd_sent;
u32 buf_sent_cnt;
};
/*
* The thread is created by the driver to handle firmware responses which will
* be waken up when a firmware-to-driver response interrupt occurs.
*/
struct isp4sd_thread_handler {
struct task_struct *thread;
wait_queue_head_t waitq;
bool resp_ready;
};
struct isp4_subdev_thread_param {
u32 idx;
struct isp4_subdev *isp_subdev;
};
struct isp4_subdev {
struct v4l2_subdev sdev;
struct isp4_interface ispif;
struct isp4vid_dev isp_vdev;
struct media_pad sdev_pad;
enum isp4sd_status isp_status;
/* mutex used to synchronize the operation with firmware */
struct mutex ops_mutex;
struct isp4sd_thread_handler
fw_resp_thread[ISP4SD_MAX_FW_RESP_STREAM_NUM];
u32 host2fw_seq_num;
struct isp4sd_sensor_info sensor_info;
/* gpio descriptor */
struct gpio_desc *enable_gpio;
struct device *dev;
void __iomem *mmio;
struct isp4_subdev_thread_param
isp_resp_para[ISP4SD_MAX_FW_RESP_STREAM_NUM];
int irq[ISP4SD_MAX_FW_RESP_STREAM_NUM];
bool irq_enabled;
/* spin lock to access ISP_SYS_INT0_EN exclusively */
spinlock_t irq_lock;
#ifdef CONFIG_DEBUG_FS
bool enable_fw_log;
struct dentry *debugfs_dir;
char *fw_log_output;
#endif
};
int isp4sd_init(struct isp4_subdev *isp_subdev, struct v4l2_device *v4l2_dev,
int irq[ISP4SD_MAX_FW_RESP_STREAM_NUM]);
void isp4sd_deinit(struct isp4_subdev *isp_subdev);
int isp4sd_ioc_send_img_buf(struct v4l2_subdev *sd,
struct isp4if_img_buf_info *buf_info);
int isp4sd_pwron_and_init(struct v4l2_subdev *sd);
int isp4sd_pwroff_and_deinit(struct v4l2_subdev *sd);
#endif /* _ISP4_SUBDEV_H_ */
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