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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2013 - 2025 Intel Corporation
*/
#ifndef IPU7_ISYS_H
#define IPU7_ISYS_H
#include <linux/irqreturn.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/pm_qos.h>
#include <linux/spinlock_types.h>
#include <linux/types.h>
#include <media/media-device.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include "abi/ipu7_fw_msg_abi.h"
#include "abi/ipu7_fw_isys_abi.h"
#include "ipu7.h"
#include "ipu7-isys-csi2.h"
#include "ipu7-isys-video.h"
#define IPU_ISYS_ENTITY_PREFIX "Intel IPU7"
/* FW support max 16 streams */
#define IPU_ISYS_MAX_STREAMS 16U
/*
* Current message queue configuration. These must be big enough
* so that they never gets full. Queues are located in system memory
*/
#define IPU_ISYS_SIZE_RECV_QUEUE 40U
#define IPU_ISYS_SIZE_LOG_QUEUE 256U
#define IPU_ISYS_SIZE_SEND_QUEUE 40U
#define IPU_ISYS_NUM_RECV_QUEUE 1U
#define IPU_ISYS_MIN_WIDTH 2U
#define IPU_ISYS_MIN_HEIGHT 2U
#define IPU_ISYS_MAX_WIDTH 8160U
#define IPU_ISYS_MAX_HEIGHT 8190U
#define FW_CALL_TIMEOUT_JIFFIES \
msecs_to_jiffies(IPU_LIB_CALL_TIMEOUT_MS)
struct isys_fw_log {
struct mutex mutex; /* protect whole struct */
void *head;
void *addr;
u32 count; /* running counter of log */
u32 size; /* actual size of log content, in bits */
};
/*
* struct ipu7_isys
*
* @media_dev: Media device
* @v4l2_dev: V4L2 device
* @adev: ISYS bus device
* @power: Is ISYS powered on or not?
* @isr_bits: Which bits does the ISR handle?
* @power_lock: Serialise access to power (power state in general)
* @csi2_rx_ctrl_cached: cached shared value between all CSI2 receivers
* @streams_lock: serialise access to streams
* @streams: streams per firmware stream ID
* @syscom: fw communication layer context
* @ref_count: total number of callers fw open
* @mutex: serialise access isys video open/release related operations
* @stream_mutex: serialise stream start and stop, queueing requests
* @pdata: platform data pointer
* @csi2: CSI-2 receivers
*/
struct ipu7_isys {
struct media_device media_dev;
struct v4l2_device v4l2_dev;
struct ipu7_bus_device *adev;
int power;
spinlock_t power_lock; /* Serialise access to power */
u32 isr_csi2_mask;
u32 csi2_rx_ctrl_cached;
spinlock_t streams_lock;
struct ipu7_isys_stream streams[IPU_ISYS_MAX_STREAMS];
int streams_ref_count[IPU_ISYS_MAX_STREAMS];
u32 phy_rext_cal;
bool icache_prefetch;
bool csi2_cse_ipc_not_supported;
unsigned int ref_count;
unsigned int stream_opened;
struct mutex mutex; /* Serialise isys video open/release related */
struct mutex stream_mutex; /* Stream start, stop, queueing reqs */
struct ipu7_isys_pdata *pdata;
struct ipu7_isys_csi2 *csi2;
struct isys_fw_log *fw_log;
struct list_head requests;
struct pm_qos_request pm_qos;
spinlock_t listlock; /* Protect framebuflist */
struct list_head framebuflist;
struct list_head framebuflist_fw;
struct v4l2_async_notifier notifier;
struct ipu7_insys_config *subsys_config;
dma_addr_t subsys_config_dma_addr;
};
struct isys_fw_msgs {
union {
u64 dummy;
struct ipu7_insys_buffset frame;
struct ipu7_insys_stream_cfg stream;
} fw_msg;
struct list_head head;
dma_addr_t dma_addr;
};
struct ipu7_isys_csi2_config {
unsigned int nlanes;
unsigned int port;
enum v4l2_mbus_type bus_type;
};
struct sensor_async_sd {
struct v4l2_async_connection asc;
struct ipu7_isys_csi2_config csi2;
};
struct isys_fw_msgs *ipu7_get_fw_msg_buf(struct ipu7_isys_stream *stream);
void ipu7_put_fw_msg_buf(struct ipu7_isys *isys, uintptr_t data);
void ipu7_cleanup_fw_msg_bufs(struct ipu7_isys *isys);
int isys_isr_one(struct ipu7_bus_device *adev);
void ipu7_isys_setup_hw(struct ipu7_isys *isys);
#endif /* IPU7_ISYS_H */
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