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
  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
  43struct vpfe_pixel_format {
  44        struct v4l2_fmtdesc fmtdesc;
  45        /* bytes per pixel */
  46        int bpp;
  47};
  48
  49struct vpfe_std_info {
  50        int active_pixels;
  51        int active_lines;
  52        /* current frame format */
  53        int frame_format;
  54};
  55
  56struct vpfe_route {
  57        u32 input;
  58        u32 output;
  59};
  60
  61struct 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
  80struct 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
  98struct 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 */
 171struct 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
 178struct 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 */
 187