blob: b548e617cf627588737bfdb80c68dcaacae3aa59 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-only */
* ispstat.h
* TI OMAP3 ISP - Statistics core
* Copyright (C) 2010 Nokia Corporation
* Copyright (C) 2009 Texas Instruments, Inc
* Contacts: David Cohen <>
* Laurent Pinchart <>
* Sakari Ailus <>
#ifndef OMAP3_ISP_STAT_H
#define OMAP3_ISP_STAT_H
#include <linux/types.h>
#include <linux/omap3isp.h>
#include <media/v4l2-event.h>
#include "isp.h"
#include "ispvideo.h"
#define STAT_MAX_BUFS 5
#define STAT_NEVENTS 8
#define STAT_BUF_DONE 0 /* Buffer is ready */
#define STAT_NO_BUF 1 /* An error has occurred */
#define STAT_BUF_WAITING_DMA 2 /* Histogram only: DMA is running */
struct dma_chan;
struct ispstat;
struct ispstat_buffer {
struct sg_table sgt;
void *virt_addr;
dma_addr_t dma_addr;
struct timespec64 ts;
u32 buf_size;
u32 frame_number;
u16 config_counter;
u8 empty;
struct ispstat_ops {
* Validate new params configuration.
* new_conf->buf_size value must be changed to the exact buffer size
* necessary for the new configuration if it's smaller.
int (*validate_params)(struct ispstat *stat, void *new_conf);
* Save new params configuration.
* stat->priv->buf_size value must be set to the exact buffer size for
* the new configuration.
* stat->update is set to 1 if new configuration is different than
* current one.
void (*set_params)(struct ispstat *stat, void *new_conf);
/* Apply stored configuration. */
void (*setup_regs)(struct ispstat *stat, void *priv);
/* Enable/Disable module. */
void (*enable)(struct ispstat *stat, int enable);
/* Verify is module is busy. */
int (*busy)(struct ispstat *stat);
/* Used for specific operations during generic buf process task. */
int (*buf_process)(struct ispstat *stat);
enum ispstat_state_t {
struct ispstat {
struct v4l2_subdev subdev;
struct media_pad pad; /* sink pad */
/* Control */
unsigned configured:1;
unsigned update:1;
unsigned buf_processing:1;
unsigned sbl_ovl_recover:1;
u8 inc_config;
atomic_t buf_err;
enum ispstat_state_t state; /* enabling/disabling state */
struct isp_device *isp;
void *priv; /* pointer to priv config struct */
void *recover_priv; /* pointer to recover priv configuration */
struct mutex ioctl_lock; /* serialize private ioctl */
const struct ispstat_ops *ops;
/* Buffer */
u8 wait_acc_frames;
u16 config_counter;
u32 frame_number;
u32 buf_size;
u32 buf_alloc_size;
struct dma_chan *dma_ch;
unsigned long event_type;
struct ispstat_buffer *buf;
struct ispstat_buffer *active_buf;
struct ispstat_buffer *locked_buf;
struct ispstat_generic_config {
* Fields must be in the same order as in:
* - omap3isp_h3a_aewb_config
* - omap3isp_h3a_af_config
* - omap3isp_hist_config
u32 buf_size;
u16 config_counter;
int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
int omap3isp_stat_request_statistics(struct ispstat *stat,
struct omap3isp_stat_data *data);
int omap3isp_stat_request_statistics_time32(struct ispstat *stat,
struct omap3isp_stat_data_time32 *data);
int omap3isp_stat_init(struct ispstat *stat, const char *name,
const struct v4l2_subdev_ops *sd_ops);
void omap3isp_stat_cleanup(struct ispstat *stat);
int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
struct v4l2_fh *fh,
struct v4l2_event_subscription *sub);
int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
struct v4l2_fh *fh,
struct v4l2_event_subscription *sub);
int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
int omap3isp_stat_busy(struct ispstat *stat);
int omap3isp_stat_pcr_busy(struct ispstat *stat);
void omap3isp_stat_suspend(struct ispstat *stat);
void omap3isp_stat_resume(struct ispstat *stat);
int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
void omap3isp_stat_sbl_overflow(struct ispstat *stat);
void omap3isp_stat_isr(struct ispstat *stat);
void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
void omap3isp_stat_dma_isr(struct ispstat *stat);
int omap3isp_stat_register_entities(struct ispstat *stat,
struct v4l2_device *vdev);
void omap3isp_stat_unregister_entities(struct ispstat *stat);
#endif /* OMAP3_ISP_STAT_H */