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
  35 struct dma_chan;
  36 struct ispstat;
  37
  38 struct 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
  49 struct 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
  79 enum ispstat_state_t {
  80         ISPSTAT_DISABLED = 0,
  81         ISPSTAT_DISABLING,
  82         ISPSTAT_ENABLED,
  83         ISPSTAT_ENABLING,
  84         ISPSTAT_SUSPENDED,
  85 };
  86
  87 struct 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
 119 struct 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
 130 int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
 131 int omap3isp_stat_request_statistics(struct ispstat *stat,
 132                                      struct omap3isp_stat_data *data);
 133 int omap3isp_stat_init(struct ispstat *stat, const char *name,
 134                        const struct v4l2_subdev_ops *sd_ops);
 135 void omap3isp_stat_cleanup(struct ispstat *stat);
 136 int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
 137                                   struct v4l2_fh *fh,
 138                                   struct v4l2_event_subscription *sub);
 139 int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
 140                                     struct v4l2_fh *fh,
 141                                     struct v4l2_event_subscription *sub);
 142 int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
 143
 144 int omap3isp_stat_busy(struct ispstat *stat);
 145 int omap3isp_stat_pcr_busy(struct ispstat *stat);
 146 void omap3isp_stat_suspend(struct ispstat *stat);
 147 void omap3isp_stat_resume(struct ispstat *stat);
 148 int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
 149 void omap3isp_stat_sbl_overflow(struct ispstat *stat);
 150 void omap3isp_stat_isr(struct ispstat *stat);
 151 void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
 152 void omap3isp_stat_dma_isr(struct ispstat *stat);
 153 int omap3isp_stat_register_entities(struct ispstat *stat,
 154                                     struct v4l2_device *vdev);
 155 void omap3isp_stat_unregister_entities(struct ispstat *stat);
 156
 157 #endif /* OMAP3_ISP_STAT_H */