LXR linux/drivers/media/platform/omap3isp/ispstat.h

   1/*
   2 * ispstat.h
   3 *
   4 * TI OMAP3 ISP - Statistics core
   5 *
   6 * Copyright (C) 2010 Nokia Corporation
   7 * Copyright (C) 2009 Texas Instruments, Inc
   8 *
   9 * Contacts: David Cohen <dacohen@gmail.com>
  10 *           Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  11 *           Sakari Ailus <sakari.ailus@iki.fi>
  12 *
  13 * This program is free software; you can redistribute it and/or modify
  14 * it under the terms of the GNU General Public License version 2 as
  15 * published by the Free Software Foundation.
  16 */
  17
  18#ifndef OMAP3_ISP_STAT_H
  19#define OMAP3_ISP_STAT_H
  20
  21#include <linux/types.h>
  22#include <linux/omap3isp.h>
  23#include <media/v4l2-event.h>
  24
  25#include "isp.h"
  26#include "ispvideo.h"
  27
  28#define STAT_MAX_BUFS           5
  29#define STAT_NEVENTS            8
  30
  31#define STAT_BUF_DONE           0       /* Buffer is ready */
  32#define STAT_NO_BUF             1       /* An error has occurred */
  33#define STAT_BUF_WAITING_DMA    2       /* Histogram only: DMA is running */
  34
  35struct dma_chan;
  36struct ispstat;
  37
  38struct ispstat_buffer {
  39        struct sg_table sgt;
  40        void *virt_addr;
  41        dma_addr_t dma_addr;
  42        struct timeval ts;
  43        u32 buf_size;
  44        u32 frame_number;
  45        u16 config_counter;
  46        u8 empty;
  47};
  48
  49struct ispstat_ops {
  50        /*
  51         * Validate new params configuration.
  52         * new_conf->buf_size value must be changed to the exact buffer size
  53         * necessary for the new configuration if it's smaller.
  54         */
  55        int (*validate_params)(struct ispstat *stat, void *new_conf);
  56
  57        /*
  58         * Save new params configuration.
  59         * stat->priv->buf_size value must be set to the exact buffer size for
  60         * the new configuration.
  61         * stat->update is set to 1 if new configuration is different than
  62         * current one.
  63         */
  64        void (*set_params)(struct ispstat *stat, void *new_conf);
  65
  66        /* Apply stored configuration. */
  67        void (*setup_regs)(struct ispstat *stat, void *priv);
  68
  69        /* Enable/Disable module. */
  70        void (*enable)(struct ispstat *stat, int enable);
  71
  72        /* Verify is module is busy. */
  73        int (*busy)(struct ispstat *stat);
  74
  75        /* Used for specific operations during generic buf process task. */
  76        int (*buf_process)(struct ispstat *stat);
  77};
  78
  79enum ispstat_state_t {
  80        ISPSTAT_DISABLED = 0,
  81        ISPSTAT_DISABLING,
  82        ISPSTAT_ENABLED,
  83        ISPSTAT_ENABLING,
  84        ISPSTAT_SUSPENDED,
  85};
  86
  87struct ispstat {
  88        struct v4l2_subdev subdev;
  89        struct media_pad pad;   /* sink pad */
  90
  91        /* Control */
  92        unsigned configured:1;
  93        unsigned update:1;
  94        unsigned buf_processing:1;
  95        unsigned sbl_ovl_recover:1;
  96        u8 inc_config;
  97        atomic_t buf_err;
  98        enum ispstat_state_t state;     /* enabling/disabling state */
  99        struct isp_device *isp;
 100        void *priv;             /* pointer to priv config struct */
 101        void *recover_priv;     /* pointer to recover priv configuration */
 102        struct mutex ioctl_lock; /* serialize private ioctl */
 103
 104        const struct ispstat_ops *ops;
 105
 106        /* Buffer */
 107        u8 wait_acc_frames;
 108        u16 config_counter;
 109        u32 frame_number;
 110        u32 buf_size;
 111        u32 buf_alloc_size;
 112        struct dma_chan *dma_ch;
 113        unsigned long event_type;
 114        struct ispstat_buffer *buf;
 115        struct ispstat_buffer *active_buf;
 116        struct ispstat_buffer *locked_buf;
 117};
 118
 119struct ispstat_generic_config {
 120        /*
 121         * Fields must be in the same order as in:
 122         *  - omap3isp_h3a_aewb_config
 123         *  - omap3isp_h3a_af_config
 124         *  - omap3isp_hist_config
 125         */
 126        u32 buf_size;
 127        u16 config_counter;
 128};
 129
 130int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
 131int omap3isp_stat_request_statistics(struct ispstat *stat,
 132                                     struct omap3isp_stat_data *data);
 133int omap3isp_stat_init(struct ispstat *stat, const char *name,
 134                       const struct v4l2_subdev_ops *sd_ops);
 135void omap3isp_stat_cleanup(struct ispstat *stat);
 136int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
 137                                  struct v4l2_fh *fh,
 138                                  struct v4l2_event_subscription *sub);
 139int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
 140                                    struct v4l2_fh *fh,
 141                                    struct v4l2_event_subscription *sub);
 142int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
 143
 144int omap3isp_stat_busy(struct ispstat *stat);
 145int omap3isp_stat_pcr_busy(struct ispstat *stat);
 146void omap3isp_stat_suspend(struct ispstat *stat);
 147void omap3isp_stat_resume(struct ispstat *stat);
 148int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
 149void omap3isp_stat_sbl_overflow(struct ispstat *stat);
 150void omap3isp_stat_isr(struct ispstat *stat);
 151void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
 152void omap3isp_stat_dma_isr(struct ispstat *stat);
 153int omap3isp_stat_register_entities(struct ispstat *stat,
 154                                    struct v4l2_device *vdev);
 155void omap3isp_stat_unregister_entities(struct ispstat *stat);
 156
 157#endif /* OMAP3_ISP_STAT_H */
 158