include/media/ti-media/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/ti-media/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         /* decoder format */
  51         u32 subdev_pix_fmt;
  52 };
  53
  54 struct vpfe_std_info {
  55         int active_pixels;
  56         int active_lines;
  57         /* current frame format */
  58         int frame_format;
  59 };
  60
  61 struct vpfe_route {
  62         u32 input;
  63         u32 output;
  64 };
  65
  66 enum vpfe_subdev_id {
  67         VPFE_SUBDEV_TVP5146 = 1,
  68         VPFE_SUBDEV_MT9T031 = 2
  69 };
  70
  71 struct vpfe_subdev_info {
  72         /* Sub device module name */
  73         char module_name[32];
  74         /* Sub device group id */
  75         int grp_id;
  76         /* Number of inputs supported */
  77         int num_inputs;
  78         /* inputs available at the sub device */
  79         struct v4l2_input *inputs;
  80         /* Sub dev routing information for each input */
  81         struct vpfe_route *routes;
  82         /* ccdc bus/interface configuration */
  83         struct vpfe_hw_if_param ccdc_if_params;
  84         /* i2c subdevice board info */
  85         struct i2c_board_info board_info;
  86         /* Is this a camera sub device ? */
  87         unsigned is_camera:1;
  88         /* check if sub dev supports routing */
  89         unsigned can_route:1;
  90         /* registered ? */
  91         unsigned registered:1;
  92 };
  93
  94 struct vpfe_config {
  95         /* Number of sub devices connected to vpfe */
  96         int num_subdevs;
  97         /* I2C Bus adapter no */
  98         int i2c_adapter_id;
  99         /* information about each subdev */
 100         struct vpfe_subdev_info *sub_devs;
 101         /* evm card info */
 102         char *card_name;
 103         /* ccdc name */
 104         char *ccdc;
 105         /* setup function for the input path */
 106         int (*setup_input)(enum vpfe_subdev_id id);
 107         /* Function for Clearing the interrupt */
 108         void (*clr_intr)(int vdint);
 109         /* number of clocks */
 110         int num_clocks;
 111         /* clocks used for vpfe capture */
 112         char *clocks[];
 113 };
 114
 115 struct vpfe_device {
 116         /* V4l2 specific parameters */
 117         /* Identifies video device for this channel */
 118         struct video_device *video_dev;
 119         /* sub devices */
 120         struct v4l2_subdev **sd;
 121         /* vpfe cfg */
 122         struct vpfe_config *cfg;
 123         /* clock ptrs for vpfe capture */
 124         struct clk **clks;
 125         /* V4l2 device */
 126         struct v4l2_device v4l2_dev;
 127         /* parent device */
 128         struct device *pdev;
 129         /* Used to keep track of state of the priority */
 130         struct v4l2_prio_state prio;
 131         /* number of open instances of the channel */
 132         u32 usrs;
 133         /* Indicates id of the field which is being displayed */
 134         u32 field_id;
 135         /* flag to indicate whether decoder is initialized */
 136         u8 initialized;
 137         /* current interface type */
 138         struct vpfe_hw_if_param vpfe_if_params;
 139         /* ptr to currently selected sub device */
 140         struct vpfe_subdev_info *current_subdev;
 141         /* current input at the sub device */
 142         int current_input;
 143         /* Keeps track of the information about the standard */
 144         struct vpfe_std_info std_info;
 145         /* std index into std table */
 146         int std_index;
 147         /* CCDC IRQs used when CCDC/ISIF output to SDRAM */
 148         unsigned int ccdc_irq0;
 149         unsigned int ccdc_irq1;
 150         /* number of buffers in fbuffers */
 151         u32 numbuffers;
 152         /* List of buffer pointers for storing frames */
 153         u8 *fbuffers[VIDEO_MAX_FRAME];
 154         /* Pointer pointing to current v4l2_buffer */
 155         struct videobuf_buffer *cur_frm;
 156         /* Pointer pointing to next v4l2_buffer */
 157         struct videobuf_buffer *next_frm;
 158         /*
 159          * This field keeps track of type of buffer exchange mechanism
 160          * user has selected
 161          */
 162         enum v4l2_memory memory;
 163         /* Used to store pixel format */
 164         struct v4l2_format fmt;
 165         /*
 166          * used when IMP is chained to store the crop window which
 167          * is different from the image window
 168          */
 169         struct v4l2_rect crop;
 170         /* Buffer queue used in video-buf */
 171         struct videobuf_queue buffer_queue;
 172         /* Queue of filled frames */
 173         struct list_head dma_queue;
 174         /* Used in video-buf */
 175         spinlock_t irqlock;
 176         /* IRQ lock for DMA queue */
 177         spinlock_t dma_queue_lock;
 178         /* lock used to access this structure */
 179         struct mutex lock;
 180         /* number of users performing IO */
 181         u32 io_usrs;
 182         /* Indicates whether streaming started */
 183         u8 started;
 184         /*
 185          * offset where second field starts from the starting of the
 186          * buffer for field seperated YCbCr formats
 187          */
 188         u32 field_off;
 189 };
 190
 191 /* File handle structure */
 192 struct vpfe_fh {
 193         struct vpfe_device *vpfe_dev;
 194         /* Indicates whether this file handle is doing IO */
 195         u8 io_allowed;
 196         /* Used to keep track priority of this instance */
 197         enum v4l2_priority prio;
 198 };
 199
 200 struct vpfe_config_params {
 201         u8 min_numbuffers;
 202         u8 numbuffers;
 203         u32 min_bufsize;
 204         u32 device_bufsize;
 205 };
 206
 207 #endif                          /* End of __KERNEL__ */
 208 /**
 209  * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
 210  * This can be used to configure modules such as defect pixel correction,
 211  * color space conversion, culling etc. This is an experimental ioctl that
 212  * will change in future kernels. So use this ioctl with care !
 213  * TODO: This is to be split into multiple ioctls and also explore the
 214  * possibility of extending the v4l2 api to include this
 215  **/
 216 #define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
 217                                         void *)
 218 #endif                          /* _DAVINCI_VPFE_H */