LXR linux/include/media/davinci/vpbe

   1/*
   2 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License as
   6 * published by the Free Software Foundation version 2.
   7 *
   8 * This program is distributed WITHOUT ANY WARRANTY of any
   9 * kind, whether express or implied; without even the implied warranty
  10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 */
  13#ifndef VPBE_DISPLAY_H
  14#define VPBE_DISPLAY_H
  15
  16/* Header files */
  17#include <linux/videodev2.h>
  18#include <media/v4l2-common.h>
  19#include <media/v4l2-fh.h>
  20#include <media/videobuf2-v4l2.h>
  21#include <media/videobuf2-dma-contig.h>
  22#include <media/davinci/vpbe_types.h>
  23#include <media/davinci/vpbe_osd.h>
  24#include <media/davinci/vpbe.h>
  25
  26#define VPBE_DISPLAY_MAX_DEVICES 2
  27
  28enum vpbe_display_device_id {
  29        VPBE_DISPLAY_DEVICE_0,
  30        VPBE_DISPLAY_DEVICE_1
  31};
  32
  33#define VPBE_DISPLAY_DRV_NAME   "vpbe-display"
  34
  35#define VPBE_DISPLAY_MAJOR_RELEASE              1
  36#define VPBE_DISPLAY_MINOR_RELEASE              0
  37#define VPBE_DISPLAY_BUILD                      1
  38#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
  39        (VPBE_DISPLAY_MINOR_RELEASE << 8)  | \
  40        VPBE_DISPLAY_BUILD)
  41
  42#define VPBE_DISPLAY_VALID_FIELD(field)   ((V4L2_FIELD_NONE == field) || \
  43         (V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
  44
  45/* Exp ratio numerator and denominator constants */
  46#define VPBE_DISPLAY_H_EXP_RATIO_N      9
  47#define VPBE_DISPLAY_H_EXP_RATIO_D      8
  48#define VPBE_DISPLAY_V_EXP_RATIO_N      6
  49#define VPBE_DISPLAY_V_EXP_RATIO_D      5
  50
  51/* Zoom multiplication factor */
  52#define VPBE_DISPLAY_ZOOM_4X    4
  53#define VPBE_DISPLAY_ZOOM_2X    2
  54
  55/* Structures */
  56struct display_layer_info {
  57        int enable;
  58        /* Layer ID used by Display Manager */
  59        enum osd_layer id;
  60        struct osd_layer_config config;
  61        enum osd_zoom_factor h_zoom;
  62        enum osd_zoom_factor v_zoom;
  63        enum osd_h_exp_ratio h_exp;
  64        enum osd_v_exp_ratio v_exp;
  65};
  66
  67struct vpbe_disp_buffer {
  68        struct vb2_v4l2_buffer vb;
  69        struct list_head list;
  70};
  71
  72/* vpbe display object structure */
  73struct vpbe_layer {
  74        /* Pointer to the vpbe_display */
  75        struct vpbe_display *disp_dev;
  76        /* Pointer pointing to current v4l2_buffer */
  77        struct vpbe_disp_buffer *cur_frm;
  78        /* Pointer pointing to next v4l2_buffer */
  79        struct vpbe_disp_buffer *next_frm;
  80        /* videobuf specific parameters
  81         * Buffer queue used in video-buf
  82         */
  83        struct vb2_queue buffer_queue;
  84        /* Queue of filled frames */
  85        struct list_head dma_queue;
  86        /* Used in video-buf */
  87        spinlock_t irqlock;
  88        /* V4l2 specific parameters */
  89        /* Identifies video device for this layer */
  90        struct video_device video_dev;
  91        /* Used to store pixel format */
  92        struct v4l2_pix_format pix_fmt;
  93        enum v4l2_field buf_field;
  94        /* Video layer configuration params */
  95        struct display_layer_info layer_info;
  96        /* vpbe specific parameters
  97         * enable window for display
  98         */
  99        unsigned char window_enable;
 100        /* number of open instances of the layer */
 101        unsigned int usrs;
 102        /* Indicates id of the field which is being displayed */
 103        unsigned int field_id;
 104        /* Identifies device object */
 105        enum vpbe_display_device_id device_id;
 106        /* facilitation of ioctl ops lock by v4l2*/
 107        struct mutex opslock;
 108        u8 layer_first_int;
 109};
 110
 111/* vpbe device structure */
 112struct vpbe_display {
 113        /* layer specific parameters */
 114        /* lock for isr updates to buf layers*/
 115        spinlock_t dma_queue_lock;
 116        /* C-Plane offset from start of y-plane */
 117        unsigned int cbcr_ofst;
 118        struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
 119        struct vpbe_device *vpbe_dev;
 120        struct osd_state *osd_device;
 121};
 122
 123struct buf_config_params {
 124        unsigned char min_numbuffers;
 125        unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
 126        unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
 127        unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
 128};
 129
 130#endif  /* VPBE_DISPLAY_H */
 131