LXR linux/drivers/media/video/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 * This program is distributed in the hope that it will be useful, but
  18 * WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 * General Public License for more details.
  21 *
  22 * You should have received a copy of the GNU General Public License
  23 * along with this program; if not, write to the Free Software
  24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  25 * 02110-1301 USA
  26 */
  27
  28#ifndef OMAP3_ISP_STAT_H
  29#define OMAP3_ISP_STAT_H
  30
  31#include <linux/types.h>
  32#include <linux/omap3isp.h>
  33#include <plat/dma.h>
  34#include <media/v4l2-event.h>
  35
  36#include "isp.h"
  37#include "ispvideo.h"
  38
  39#define STAT_MAX_BUFS           5
  40#define STAT_NEVENTS            8
  41
  42#define STAT_BUF_DONE           0       /* Buffer is ready */
  43#define STAT_NO_BUF             1       /* An error has occurred */
  44#define STAT_BUF_WAITING_DMA    2       /* Histogram only: DMA is running */
  45
  46struct ispstat;
  47
  48struct ispstat_buffer {
  49        unsigned long iommu_addr;
  50        struct iovm_struct *iovm;
  51        void *virt_addr;
  52        dma_addr_t dma_addr;
  53        struct timeval ts;
  54        u32 buf_size;
  55        u32 frame_number;
  56        u16 config_counter;
  57        u8 empty;
  58};
  59
  60struct ispstat_ops {
  61        /*
  62         * Validate new params configuration.
  63         * new_conf->buf_size value must be changed to the exact buffer size
  64         * necessary for the new configuration if it's smaller.
  65         */
  66        int (*validate_params)(struct ispstat *stat, void *new_conf);
  67
  68        /*
  69         * Save new params configuration.
  70         * stat->priv->buf_size value must be set to the exact buffer size for
  71         * the new configuration.
  72         * stat->update is set to 1 if new configuration is different than
  73         * current one.
  74         */
  75        void (*set_params)(struct ispstat *stat, void *new_conf);
  76
  77        /* Apply stored configuration. */
  78        void (*setup_regs)(struct ispstat *stat, void *priv);
  79
  80        /* Enable/Disable module. */
  81        void (*enable)(struct ispstat *stat, int enable);
  82
  83        /* Verify is module is busy. */
  84        int (*busy)(struct ispstat *stat);
  85
  86        /* Used for specific operations during generic buf process task. */
  87        int (*buf_process)(struct ispstat *stat);
  88};
  89
  90enum ispstat_state_t {
  91        ISPSTAT_DISABLED = 0,
  92        ISPSTAT_DISABLING,
  93        ISPSTAT_ENABLED,
  94        ISPSTAT_ENABLING,
  95        ISPSTAT_SUSPENDED,
  96};
  97
  98struct ispstat {
  99        struct v4l2_subdev subdev;
 100        struct media_pad pad;   /* sink pad */
 101
 102        /* Control */
 103        unsigned configured:1;
 104        unsigned update:1;
 105        unsigned buf_processing:1;
 106        unsigned sbl_ovl_recover:1;
 107        u8 inc_config;
 108        atomic_t buf_err;
 109        enum ispstat_state_t state;     /* enabling/disabling state */
 110        struct omap_dma_channel_params dma_config;
 111        struct isp_device *isp;
 112        void *priv;             /* pointer to priv config struct */
 113        void *recover_priv;     /* pointer to recover priv configuration */
 114        struct mutex ioctl_lock; /* serialize private ioctl */
 115
 116        const struct ispstat_ops *ops;
 117
 118        /* Buffer */
 119        u8 wait_acc_frames;
 120        u16 config_counter;
 121        u32 frame_number;
 122        u32 buf_size;
 123        u32 buf_alloc_size;
 124        int dma_ch;
 125        unsigned long event_type;
 126        struct ispstat_buffer *buf;
 127        struct ispstat_buffer *active_buf;
 128        struct ispstat_buffer *locked_buf;
 129};
 130
 131struct ispstat_generic_config {
 132        /*
 133         * Fields must be in the same order as in:
 134         *  - omap3isp_h3a_aewb_config
 135         *  - omap3isp_h3a_af_config
 136         *  - omap3isp_hist_config
 137         */
 138        u32 buf_size;
 139        u16 config_counter;
 140};
 141
 142int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
 143int omap3isp_stat_request_statistics(struct ispstat *stat,
 144                                     struct omap3isp_stat_data *data);
 145int omap3isp_stat_init(struct ispstat *stat, const char *name,
 146                       const struct v4l2_subdev_ops *sd_ops);
 147void omap3isp_stat_cleanup(struct ispstat *stat);
 148int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
 149                                  struct v4l2_fh *fh,
 150                                  struct v4l2_event_subscription *sub);
 151int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
 152                                    struct v4l2_fh *fh,
 153                                    struct v4l2_event_subscription *sub);
 154int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
 155
 156int omap3isp_stat_busy(struct ispstat *stat);
 157int omap3isp_stat_pcr_busy(struct ispstat *stat);
 158void omap3isp_stat_suspend(struct ispstat *stat);
 159void omap3isp_stat_resume(struct ispstat *stat);
 160int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
 161void omap3isp_stat_sbl_overflow(struct ispstat *stat);
 162void omap3isp_stat_isr(struct ispstat *stat);
 163void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
 164void omap3isp_stat_dma_isr(struct ispstat *stat);
 165int omap3isp_stat_register_entities(struct ispstat *stat,
 166                                    struct v4l2_device *vdev);
 167void omap3isp_stat_unregister_entities(struct ispstat *stat);
 168
 169#endif /* OMAP3_ISP_STAT_H */
 170