drivers/media/video/omap/omap_voutdef.h

   1 /*
   2  * omap_voutdef.h
   3  *
   4  * Copyright (C) 2010 Texas Instruments.
   5  *
   6  * This file is licensed under the terms of the GNU General Public License
   7  * version 2. This program is licensed "as is" without any warranty of any
   8  * kind, whether express or implied.
   9  */
  10
  11 #ifndef OMAP_VOUTDEF_H
  12 #define OMAP_VOUTDEF_H
  13
  14 #include <video/omapdss.h>
  15 #include <plat/vrfb.h>
  16
  17 #define YUYV_BPP        2
  18 #define RGB565_BPP      2
  19 #define RGB24_BPP       3
  20 #define RGB32_BPP       4
  21 #define TILE_SIZE       32
  22 #define YUYV_VRFB_BPP   2
  23 #define RGB_VRFB_BPP    1
  24 #define MAX_CID         3
  25 #define MAC_VRFB_CTXS   4
  26 #define MAX_VOUT_DEV    2
  27 #define MAX_OVLS        3
  28 #define MAX_DISPLAYS    3
  29 #define MAX_MANAGERS    3
  30
  31 #define QQVGA_WIDTH             160
  32 #define QQVGA_HEIGHT            120
  33
  34 /* Max Resolution supported by the driver */
  35 #define VID_MAX_WIDTH           1280    /* Largest width */
  36 #define VID_MAX_HEIGHT          720     /* Largest height */
  37
  38 /* Mimimum requirement is 2x2 for DSS */
  39 #define VID_MIN_WIDTH           2
  40 #define VID_MIN_HEIGHT          2
  41
  42 /* 2048 x 2048 is max res supported by OMAP display controller */
  43 #define MAX_PIXELS_PER_LINE     2048
  44
  45 #define VRFB_TX_TIMEOUT         1000
  46 #define VRFB_NUM_BUFS           4
  47
  48 /* Max buffer size tobe allocated during init */
  49 #define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
  50
  51 enum dma_channel_state {
  52         DMA_CHAN_NOT_ALLOTED,
  53         DMA_CHAN_ALLOTED,
  54 };
  55
  56 /* Enum for Rotation
  57  * DSS understands rotation in 0, 1, 2, 3 context
  58  * while V4L2 driver understands it as 0, 90, 180, 270
  59  */
  60 enum dss_rotation {
  61         dss_rotation_0_degree   = 0,
  62         dss_rotation_90_degree  = 1,
  63         dss_rotation_180_degree = 2,
  64         dss_rotation_270_degree = 3,
  65 };
  66
  67 /* Enum for choosing rotation type for vout
  68  * DSS2 doesn't understand no rotation as an
  69  * option while V4L2 driver doesn't support
  70  * rotation in the case where VRFB is not built in
  71  * the kernel
  72  */
  73 enum vout_rotaion_type {
  74         VOUT_ROT_NONE   = 0,
  75         VOUT_ROT_VRFB   = 1,
  76 };
  77
  78 /*
  79  * This structure is used to store the DMA transfer parameters
  80  * for VRFB hidden buffer
  81  */
  82 struct vid_vrfb_dma {
  83         int dev_id;
  84         int dma_ch;
  85         int req_status;
  86         int tx_status;
  87         wait_queue_head_t wait;
  88 };
  89
  90 struct omapvideo_info {
  91         int id;
  92         int num_overlays;
  93         struct omap_overlay *overlays[MAX_OVLS];
  94         enum vout_rotaion_type rotation_type;
  95 };
  96
  97 struct omap2video_device {
  98         struct mutex  mtx;
  99
 100         int state;
 101
 102         struct v4l2_device v4l2_dev;
 103         struct omap_vout_device *vouts[MAX_VOUT_DEV];
 104
 105         int num_displays;
 106         struct omap_dss_device *displays[MAX_DISPLAYS];
 107         int num_overlays;
 108         struct omap_overlay *overlays[MAX_OVLS];
 109         int num_managers;
 110         struct omap_overlay_manager *managers[MAX_MANAGERS];
 111 };
 112
 113 /* per-device data structure */
 114 struct omap_vout_device {
 115
 116         struct omapvideo_info vid_info;
 117         struct video_device *vfd;
 118         struct omap2video_device *vid_dev;
 119         int vid;
 120         int opened;
 121
 122         /* we don't allow to change image fmt/size once buffer has
 123          * been allocated
 124          */
 125         int buffer_allocated;
 126         /* allow to reuse previously allocated buffer which is big enough */
 127         int buffer_size;
 128         /* keep buffer info across opens */
 129         unsigned long buf_virt_addr[VIDEO_MAX_FRAME];
 130         unsigned long buf_phy_addr[VIDEO_MAX_FRAME];
 131         enum omap_color_mode dss_mode;
 132
 133         /* we don't allow to request new buffer when old buffers are
 134          * still mmaped
 135          */
 136         int mmap_count;
 137
 138         spinlock_t vbq_lock;            /* spinlock for videobuf queues */
 139         unsigned long field_count;      /* field counter for videobuf_buffer */
 140
 141         /* non-NULL means streaming is in progress. */
 142         bool streaming;
 143
 144         struct v4l2_pix_format pix;
 145         struct v4l2_rect crop;
 146         struct v4l2_window win;
 147         struct v4l2_framebuffer fbuf;
 148
 149         /* Lock to protect the shared data structures in ioctl */
 150         struct mutex lock;
 151
 152         /* V4L2 control structure for different control id */
 153         struct v4l2_control control[MAX_CID];
 154         enum dss_rotation rotation;
 155         bool mirror;
 156         int flicker_filter;
 157         /* V4L2 control structure for different control id */
 158
 159         int bpp; /* bytes per pixel */
 160         int vrfb_bpp; /* bytes per pixel with respect to VRFB */
 161
 162         struct vid_vrfb_dma vrfb_dma_tx;
 163         unsigned int smsshado_phy_addr[MAC_VRFB_CTXS];
 164         unsigned int smsshado_virt_addr[MAC_VRFB_CTXS];
 165         struct vrfb vrfb_context[MAC_VRFB_CTXS];
 166         bool vrfb_static_allocation;
 167         unsigned int smsshado_size;
 168         unsigned char pos;
 169
 170         int ps, vr_ps, line_length, first_int, field_id;
 171         enum v4l2_memory memory;
 172         struct videobuf_buffer *cur_frm, *next_frm;
 173         struct list_head dma_queue;
 174         u8 *queued_buf_addr[VIDEO_MAX_FRAME];
 175         u32 cropped_offset;
 176         s32 tv_field1_offset;
 177         void *isr_handle;
 178
 179         /* Buffer queue variables */
 180         struct omap_vout_device *vout;
 181         enum v4l2_buf_type type;
 182         struct videobuf_queue vbq;
 183         int io_allowed;
 184
 185 };
 186
 187 /*
 188  * Return true if rotation is 90 or 270
 189  */
 190 static inline int is_rotation_90_or_270(const struct omap_vout_device *vout)
 191 {
 192         return (vout->rotation == dss_rotation_90_degree ||
 193                         vout->rotation == dss_rotation_270_degree);
 194 }
 195
 196 /*
 197  * Return true if rotation is enabled
 198  */
 199 static inline int is_rotation_enabled(const struct omap_vout_device *vout)
 200 {
 201         return vout->rotation || vout->mirror;
 202 }
 203
 204 /*
 205  * Reverse the rotation degree if mirroring is enabled
 206  */
 207 static inline int calc_rotation(const struct omap_vout_device *vout)
 208 {
 209         if (!vout->mirror)
 210                 return vout->rotation;
 211
 212         switch (vout->rotation) {
 213         case dss_rotation_90_degree:
 214                 return dss_rotation_270_degree;
 215         case dss_rotation_270_degree:
 216                 return dss_rotation_90_degree;
 217         case dss_rotation_180_degree:
 218                 return dss_rotation_0_degree;
 219         default:
 220                 return dss_rotation_180_degree;
 221         }
 222 }
 223
 224 void omap_vout_free_buffers(struct omap_vout_device *vout);
 225 #endif  /* ifndef OMAP_VOUTDEF_H */