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
  46 struct ispstat;
  47
  48 struct 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
  60 struct 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
  90 enum ispstat_state_t {
  91         ISPSTAT_DISABLED = 0,
  92         ISPSTAT_DISABLING,
  93         ISPSTAT_ENABLED,
  94         ISPSTAT_ENABLING,
  95         ISPSTAT_SUSPENDED,
  96 };
  97
  98 struct 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
 131 struct 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
 142 int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
 143 int omap3isp_stat_request_statistics(struct ispstat *stat,
 144                                      struct omap3isp_stat_data *data);
 145 int omap3isp_stat_init(struct ispstat *stat, const char *name,
 146                        const struct v4l2_subdev_ops *sd_ops);
 147 void omap3isp_stat_free(struct ispstat *stat);
 148 int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
 149                                   struct v4l2_fh *fh,
 150                                   struct v4l2_event_subscription *sub);
 151 int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
 152                                     struct v4l2_fh *fh,
 153                                     struct v4l2_event_subscription *sub);
 154 int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
 155
 156 int omap3isp_stat_busy(struct ispstat *stat);
 157 int omap3isp_stat_pcr_busy(struct ispstat *stat);
 158 void omap3isp_stat_suspend(struct ispstat *stat);
 159 void omap3isp_stat_resume(struct ispstat *stat);
 160 int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
 161 void omap3isp_stat_sbl_overflow(struct ispstat *stat);
 162 void omap3isp_stat_isr(struct ispstat *stat);
 163 void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
 164 void omap3isp_stat_dma_isr(struct ispstat *stat);
 165 int omap3isp_stat_register_entities(struct ispstat *stat,
 166                                     struct v4l2_device *vdev);
 167 void omap3isp_stat_unregister_entities(struct ispstat *stat);
 168
 169 #endif /* OMAP3_ISP_STAT_H */