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-fh.h>
  30 #include <media/v4l2-ioctl.h>
  31 #include <media/v4l2-device.h>
  32 #include <media/videobuf-dma-contig.h>
  33 #include <media/davinci/vpfe_types.h>
  34
  35 #define VPFE_CAPTURE_NUM_DECODERS        5
  36
  37 /* Macros */
  38 #define VPFE_MAJOR_RELEASE              0
  39 #define VPFE_MINOR_RELEASE              0
  40 #define VPFE_BUILD                      1
  41 #define VPFE_CAPTURE_VERSION_CODE       ((VPFE_MAJOR_RELEASE << 16) | \
  42                                         (VPFE_MINOR_RELEASE << 8)  | \
  43                                         VPFE_BUILD)
  44
  45 #define CAPTURE_DRV_NAME                "vpfe-capture"
  46
  47 struct vpfe_pixel_format {
  48         struct v4l2_fmtdesc fmtdesc;
  49         /* bytes per pixel */
  50         int bpp;
  51 };
  52
  53 struct vpfe_std_info {
  54         int active_pixels;
  55         int active_lines;
  56         /* current frame format */
  57         int frame_format;
  58 };
  59
  60 struct vpfe_route {
  61         u32 input;
  62         u32 output;
  63 };
  64
  65 struct vpfe_subdev_info {
  66         /* Sub device name */
  67         char name[32];
  68         /* Sub device group id */
  69         int grp_id;
  70         /* Number of inputs supported */
  71         int num_inputs;
  72         /* inputs available at the sub device */
  73         struct v4l2_input *inputs;
  74         /* Sub dev routing information for each input */
  75         struct vpfe_route *routes;
  76         /* check if sub dev supports routing */
  77         int can_route;
  78         /* ccdc bus/interface configuration */
  79         struct vpfe_hw_if_param ccdc_if_params;
  80         /* i2c subdevice board info */
  81         struct i2c_board_info board_info;
  82 };
  83
  84 struct vpfe_config {
  85         /* Number of sub devices connected to vpfe */
  86         int num_subdevs;
  87         /* i2c bus adapter no */
  88         int i2c_adapter_id;
  89         /* information about each subdev */
  90         struct vpfe_subdev_info *sub_devs;
  91         /* evm card info */
  92         char *card_name;
  93         /* ccdc name */
  94         char *ccdc;
  95         /* vpfe clock */
  96         struct clk *vpssclk;
  97         struct clk *slaveclk;
  98         /* Function for Clearing the interrupt */
  99         void (*clr_intr)(int vdint);
 100 };
 101
 102 struct vpfe_device {
 103         /* V4l2 specific parameters */
 104         /* Identifies video device for this channel */
 105         struct video_device video_dev;
 106         /* sub devices */
 107         struct v4l2_subdev **sd;
 108         /* vpfe cfg */
 109         struct vpfe_config *cfg;
 110         /* V4l2 device */
 111         struct v4l2_device v4l2_dev;
 112         /* parent device */
 113         struct device *pdev;
 114         /* number of open instances of the channel */
 115         u32 usrs;
 116         /* Indicates id of the field which is being displayed */
 117         u32 field_id;
 118         /* flag to indicate whether decoder is initialized */
 119         u8 initialized;
 120         /* current interface type */
 121         struct vpfe_hw_if_param vpfe_if_params;
 122         /* ptr to currently selected sub device */
 123         struct vpfe_subdev_info *current_subdev;
 124         /* current input at the sub device */
 125         int current_input;
 126         /* Keeps track of the information about the standard */
 127         struct vpfe_std_info std_info;
 128         /* std index into std table */
 129         int std_index;
 130         /* CCDC IRQs used when CCDC/ISIF output to SDRAM */
 131         unsigned int ccdc_irq0;
 132         unsigned int ccdc_irq1;
 133         /* number of buffers in fbuffers */
 134         u32 numbuffers;
 135         /* List of buffer pointers for storing frames */
 136         u8 *fbuffers[VIDEO_MAX_FRAME];
 137         /* Pointer pointing to current v4l2_buffer */
 138         struct videobuf_buffer *cur_frm;
 139         /* Pointer pointing to next v4l2_buffer */
 140         struct videobuf_buffer *next_frm;
 141         /*
 142          * This field keeps track of type of buffer exchange mechanism
 143          * user has selected
 144          */
 145         enum v4l2_memory memory;
 146         /* Used to store pixel format */
 147         struct v4l2_format fmt;
 148         /*
 149          * used when IMP is chained to store the crop window which
 150          * is different from the image window
 151          */
 152         struct v4l2_rect crop;
 153         /* Buffer queue used in video-buf */
 154         struct videobuf_queue buffer_queue;
 155         /* Queue of filled frames */
 156         struct list_head dma_queue;
 157         /* Used in video-buf */
 158         spinlock_t irqlock;
 159         /* IRQ lock for DMA queue */
 160         spinlock_t dma_queue_lock;
 161         /* lock used to access this structure */
 162         struct mutex lock;
 163         /* number of users performing IO */
 164         u32 io_usrs;
 165         /* Indicates whether streaming started */
 166         u8 started;
 167         /*
 168          * offset where second field starts from the starting of the
 169          * buffer for field separated YCbCr formats
 170          */
 171         u32 field_off;
 172 };
 173
 174 /* File handle structure */
 175 struct vpfe_fh {
 176         struct v4l2_fh fh;
 177         struct vpfe_device *vpfe_dev;
 178         /* Indicates whether this file handle is doing IO */
 179         u8 io_allowed;
 180 };
 181
 182 struct vpfe_config_params {
 183         u8 min_numbuffers;
 184         u8 numbuffers;
 185         u32 min_bufsize;
 186         u32 device_bufsize;
 187 };
 188
 189 #endif                          /* End of __KERNEL__ */
 190 /**
 191  * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
 192  * This can be used to configure modules such as defect pixel correction,
 193  * color space conversion, culling etc. This is an experimental ioctl that
 194  * will change in future kernels. So use this ioctl with care !
 195  * TODO: This is to be split into multiple ioctls and also explore the
 196  * possibility of extending the v4l2 api to include this
 197  **/
 198 #define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
 199                                         void *)
 200 #endif                          /* _DAVINCI_VPFE_H */