include/media/davinci/vpfe_capture.h

   1 /*
   2  * Copyright (C) 2008-2009 Texas Instruments Inc
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #ifndef _VPFE_CAPTURE_H
  16 #define _VPFE_CAPTURE_H
  17
  18 #ifdef __KERNEL__
  19
  20 /* Header files */
  21 #include <media/v4l2-dev.h>
  22 #include <linux/videodev2.h>
  23 #include <linux/clk.h>
  24 #include <linux/i2c.h>
  25 #include <media/v4l2-fh.h>
  26 #include <media/v4l2-ioctl.h>
  27 #include <media/v4l2-device.h>
  28 #include <media/videobuf-dma-contig.h>
  29 #include <media/davinci/vpfe_types.h>
  30
  31 #define VPFE_CAPTURE_NUM_DECODERS        5
  32
  33 /* Macros */
  34 #define VPFE_MAJOR_RELEASE              0
  35 #define VPFE_MINOR_RELEASE              0
  36 #define VPFE_BUILD                      1
  37 #define VPFE_CAPTURE_VERSION_CODE       ((VPFE_MAJOR_RELEASE << 16) | \
  38                                         (VPFE_MINOR_RELEASE << 8)  | \
  39                                         VPFE_BUILD)
  40
  41 #define CAPTURE_DRV_NAME                "vpfe-capture"
  42
  43 struct vpfe_pixel_format {
  44         struct v4l2_fmtdesc fmtdesc;
  45         /* bytes per pixel */
  46         int bpp;
  47 };
  48
  49 struct vpfe_std_info {
  50         int active_pixels;
  51         int active_lines;
  52         /* current frame format */
  53         int frame_format;
  54 };
  55
  56 struct vpfe_route {
  57         u32 input;
  58         u32 output;
  59 };
  60
  61 struct vpfe_subdev_info {
  62         /* Sub device name */
  63         char name[32];
  64         /* Sub device group id */
  65         int grp_id;
  66         /* Number of inputs supported */
  67         int num_inputs;
  68         /* inputs available at the sub device */
  69         struct v4l2_input *inputs;
  70         /* Sub dev routing information for each input */
  71         struct vpfe_route *routes;
  72         /* check if sub dev supports routing */
  73         int can_route;
  74         /* ccdc bus/interface configuration */
  75         struct vpfe_hw_if_param ccdc_if_params;
  76         /* i2c subdevice board info */
  77         struct i2c_board_info board_info;
  78 };
  79
  80 struct vpfe_config {
  81         /* Number of sub devices connected to vpfe */
  82         int num_subdevs;
  83         /* i2c bus adapter no */
  84         int i2c_adapter_id;
  85         /* information about each subdev */
  86         struct vpfe_subdev_info *sub_devs;
  87         /* evm card info */
  88         char *card_name;
  89         /* ccdc name */
  90         char *ccdc;
  91         /* vpfe clock */
  92         struct clk *vpssclk;
  93         struct clk *slaveclk;
  94         /* Function for Clearing the interrupt */
  95         void (*clr_intr)(int vdint);
  96 };
  97
  98 struct vpfe_device {
  99         /* V4l2 specific parameters */
 100         /* Identifies video device for this channel */
 101         struct video_device video_dev;
 102         /* sub devices */
 103         struct v4l2_subdev **sd;
 104         /* vpfe cfg */
 105         struct vpfe_config *cfg;
 106         /* V4l2 device */
 107         struct v4l2_device v4l2_dev;
 108         /* parent device */
 109         struct device *pdev;
 110         /* number of open instances of the channel */
 111         u32 usrs;
 112         /* Indicates id of the field which is being displayed */
 113         u32 field_id;
 114         /* flag to indicate whether decoder is initialized */
 115         u8 initialized;
 116         /* current interface type */
 117         struct vpfe_hw_if_param vpfe_if_params;
 118         /* ptr to currently selected sub device */
 119         struct vpfe_subdev_info *current_subdev;
 120         /* current input at the sub device */
 121         int current_input;
 122         /* Keeps track of the information about the standard */
 123         struct vpfe_std_info std_info;
 124         /* std index into std table */
 125         int std_index;
 126         /* CCDC IRQs used when CCDC/ISIF output to SDRAM */
 127         unsigned int ccdc_irq0;
 128         unsigned int ccdc_irq1;
 129         /* number of buffers in fbuffers */
 130         u32 numbuffers;
 131         /* List of buffer pointers for storing frames */
 132         u8 *fbuffers[VIDEO_MAX_FRAME];
 133         /* Pointer pointing to current v4l2_buffer */
 134         struct videobuf_buffer *cur_frm;
 135         /* Pointer pointing to next v4l2_buffer */
 136         struct videobuf_buffer *next_frm;
 137         /*
 138          * This field keeps track of type of buffer exchange mechanism
 139          * user has selected
 140          */
 141         enum v4l2_memory memory;
 142         /* Used to store pixel format */
 143         struct v4l2_format fmt;
 144         /*
 145          * used when IMP is chained to store the crop window which
 146          * is different from the image window
 147          */
 148         struct v4l2_rect crop;
 149         /* Buffer queue used in video-buf */
 150         struct videobuf_queue buffer_queue;
 151         /* Queue of filled frames */
 152         struct list_head dma_queue;
 153         /* Used in video-buf */
 154         spinlock_t irqlock;
 155         /* IRQ lock for DMA queue */
 156         spinlock_t dma_queue_lock;
 157         /* lock used to access this structure */
 158         struct mutex lock;
 159         /* number of users performing IO */
 160         u32 io_usrs;
 161         /* Indicates whether streaming started */
 162         u8 started;
 163         /*
 164          * offset where second field starts from the starting of the
 165          * buffer for field separated YCbCr formats
 166          */
 167         u32 field_off;
 168 };
 169
 170 /* File handle structure */
 171 struct vpfe_fh {
 172         struct v4l2_fh fh;
 173         struct vpfe_device *vpfe_dev;
 174         /* Indicates whether this file handle is doing IO */
 175         u8 io_allowed;
 176 };
 177
 178 struct vpfe_config_params {
 179         u8 min_numbuffers;
 180         u8 numbuffers;
 181         u32 min_bufsize;
 182         u32 device_bufsize;
 183 };
 184
 185 #endif                          /* End of __KERNEL__ */
 186 #endif                          /* _DAVINCI_VPFE_H */