LXR linux/include/media/davinci/vpfe

   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
  46struct vpfe_pixel_format {
  47        struct v4l2_fmtdesc fmtdesc;
  48        /* bytes per pixel */
  49        int bpp;
  50};
  51
  52struct vpfe_std_info {
  53        int active_pixels;
  54        int active_lines;
  55        /* current frame format */
  56        int frame_format;
  57};
  58
  59struct vpfe_route {
  60        u32 input;
  61        u32 output;
  62};
  63
  64struct 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
  83struct 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
  97struct 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 */
 172struct 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
 180struct 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 */
 199