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  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef _VPFE_CAPTURE_H
  20 #define _VPFE_CAPTURE_H
  21
  22 #ifdef __KERNEL__
  23
  24 /* Header files */
  25 #include <media/v4l2-dev.h>
  26 #include <linux/videodev2.h>
  27 #include <linux/clk.h>
  28 #include <linux/i2c.h>
  29 #include <media/v4l2-ioctl.h>
  30 #include <media/v4l2-device.h>
  31 #include <media/videobuf-dma-contig.h>
  32 #include <media/davinci/vpfe_types.h>
  33
  34 #define VPFE_CAPTURE_NUM_DECODERS        5
  35
  36 /* Macros */
  37 #define VPFE_MAJOR_RELEASE              0
  38 #define VPFE_MINOR_RELEASE              0
  39 #define VPFE_BUILD                      1
  40 #define VPFE_CAPTURE_VERSION_CODE       ((VPFE_MAJOR_RELEASE << 16) | \
  41                                         (VPFE_MINOR_RELEASE << 8)  | \
  42                                         VPFE_BUILD)
  43
  44 #define CAPTURE_DRV_NAME                "vpfe-capture"
  45
  46 struct vpfe_pixel_format {
  47         struct v4l2_fmtdesc fmtdesc;
  48         /* bytes per pixel */
  49         int bpp;
  50 };
  51
  52 struct vpfe_std_info {
  53         int active_pixels;
  54         int active_lines;
  55         /* current frame format */
  56         int frame_format;
  57 };
  58
  59 struct vpfe_route {
  60         u32 input;
  61         u32 output;
  62 };
  63
  64 struct vpfe_subdev_info {
  65         /* Sub device name */
  66         char name[32];
  67         /* Sub device group id */
  68         int grp_id;
  69         /* Number of inputs supported */
  70         int num_inputs;
  71         /* inputs available at the sub device */
  72         struct v4l2_input *inputs;
  73         /* Sub dev routing information for each input */
  74         struct vpfe_route *routes;
  75         /* check if sub dev supports routing */
  76         int can_route;
  77         /* ccdc bus/interface configuration */
  78         struct vpfe_hw_if_param ccdc_if_params;
  79         /* i2c subdevice board info */
  80         struct i2c_board_info board_info;
  81 };
  82
  83 struct vpfe_config {
  84         /* Number of sub devices connected to vpfe */
  85         int num_subdevs;
  86         /* information about each subdev */
  87         struct vpfe_subdev_info *sub_devs;
  88         /* evm card info */
  89         char *card_name;
  90         /* ccdc name */
  91         char *ccdc;
  92         /* vpfe clock */
  93         struct clk *vpssclk;
  94         struct clk *slaveclk;
  95 };
  96
  97 struct vpfe_device {
  98         /* V4l2 specific parameters */
  99         /* Identifies video device for this channel */
 100         struct video_device *video_dev;
 101         /* sub devices */
 102         struct v4l2_subdev **sd;
 103         /* vpfe cfg */
 104         struct vpfe_config *cfg;
 105         /* V4l2 device */
 106         struct v4l2_device v4l2_dev;
 107         /* parent device */
 108         struct device *pdev;
 109         /* Used to keep track of state of the priority */
 110         struct v4l2_prio_state prio;
 111         /* number of open instances of the channel */
 112         u32 usrs;
 113         /* Indicates id of the field which is being displayed */
 114         u32 field_id;
 115         /* flag to indicate whether decoder is initialized */
 116         u8 initialized;
 117         /* current interface type */
 118         struct vpfe_hw_if_param vpfe_if_params;
 119         /* ptr to currently selected sub device */
 120         struct vpfe_subdev_info *current_subdev;
 121         /* current input at the sub device */
 122         int current_input;
 123         /* Keeps track of the information about the standard */
 124         struct vpfe_std_info std_info;
 125         /* std index into std table */
 126         int std_index;
 127         /* CCDC IRQs used when CCDC/ISIF output to SDRAM */
 128         unsigned int ccdc_irq0;
 129         unsigned int ccdc_irq1;
 130         /* number of buffers in fbuffers */
 131         u32 numbuffers;
 132         /* List of buffer pointers for storing frames */
 133         u8 *fbuffers[VIDEO_MAX_FRAME];
 134         /* Pointer pointing to current v4l2_buffer */
 135         struct videobuf_buffer *cur_frm;
 136         /* Pointer pointing to next v4l2_buffer */
 137         struct videobuf_buffer *next_frm;
 138         /*
 139          * This field keeps track of type of buffer exchange mechanism
 140          * user has selected
 141          */
 142         enum v4l2_memory memory;
 143         /* Used to store pixel format */
 144         struct v4l2_format fmt;
 145         /*
 146          * used when IMP is chained to store the crop window which
 147          * is different from the image window
 148          */
 149         struct v4l2_rect crop;
 150         /* Buffer queue used in video-buf */
 151         struct videobuf_queue buffer_queue;
 152         /* Queue of filled frames */
 153         struct list_head dma_queue;
 154         /* Used in video-buf */
 155         spinlock_t irqlock;
 156         /* IRQ lock for DMA queue */
 157         spinlock_t dma_queue_lock;
 158         /* lock used to access this structure */
 159         struct mutex lock;
 160         /* number of users performing IO */
 161         u32 io_usrs;
 162         /* Indicates whether streaming started */
 163         u8 started;
 164         /*
 165          * offset where second field starts from the starting of the
 166          * buffer for field seperated YCbCr formats
 167          */
 168         u32 field_off;
 169 };
 170
 171 /* File handle structure */
 172 struct vpfe_fh {
 173         struct vpfe_device *vpfe_dev;
 174         /* Indicates whether this file handle is doing IO */
 175         u8 io_allowed;
 176         /* Used to keep track priority of this instance */
 177         enum v4l2_priority prio;
 178 };
 179
 180 struct vpfe_config_params {
 181         u8 min_numbuffers;
 182         u8 numbuffers;
 183         u32 min_bufsize;
 184         u32 device_bufsize;
 185 };
 186
 187 #endif                          /* End of __KERNEL__ */
 188 /**
 189  * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
 190  * This can be used to configure modules such as defect pixel correction,
 191  * color space conversion, culling etc. This is an experimental ioctl that
 192  * will change in future kernels. So use this ioctl with care !
 193  * TODO: This is to be split into multiple ioctls and also explore the
 194  * possibility of extending the v4l2 api to include this
 195  **/
 196 #define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
 197                                         void *)
 198 #endif                          /* _DAVINCI_VPFE_H */