drivers/media/platform/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 <media/v4l2-ctrls.h>
  15 #include <video/omapfb_dss.h>
  16 #include <video/omapvrfb.h>
  17
  18 #define YUYV_BPP        2
  19 #define RGB565_BPP      2
  20 #define RGB24_BPP       3
  21 #define RGB32_BPP       4
  22 #define TILE_SIZE       32
  23 #define YUYV_VRFB_BPP   2
  24 #define RGB_VRFB_BPP    1
  25 #define MAX_CID         3
  26 #define MAC_VRFB_CTXS   4
  27 #define MAX_VOUT_DEV    2
  28 #define MAX_OVLS        3
  29 #define MAX_DISPLAYS    10
  30 #define MAX_MANAGERS    3
  31
  32 #define QQVGA_WIDTH             160
  33 #define QQVGA_HEIGHT            120
  34
  35 /* Max Resolution supported by the driver */
  36 #define VID_MAX_WIDTH           1280    /* Largest width */
  37 #define VID_MAX_HEIGHT          720     /* Largest height */
  38
  39 /* Mimimum requirement is 2x2 for DSS */
  40 #define VID_MIN_WIDTH           2
  41 #define VID_MIN_HEIGHT          2
  42
  43 /* 2048 x 2048 is max res supported by OMAP display controller */
  44 #define MAX_PIXELS_PER_LINE     2048
  45
  46 #define VRFB_TX_TIMEOUT         1000
  47 #define VRFB_NUM_BUFS           4
  48
  49 /* Max buffer size tobe allocated during init */
  50 #define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
  51
  52 enum dma_channel_state {
  53         DMA_CHAN_NOT_ALLOTED,
  54         DMA_CHAN_ALLOTED,
  55 };
  56
  57 /* Enum for Rotation
  58  * DSS understands rotation in 0, 1, 2, 3 context
  59  * while V4L2 driver understands it as 0, 90, 180, 270
  60  */
  61 enum dss_rotation {
  62         dss_rotation_0_degree   = 0,
  63         dss_rotation_90_degree  = 1,
  64         dss_rotation_180_degree = 2,
  65         dss_rotation_270_degree = 3,
  66 };
  67
  68 /* Enum for choosing rotation type for vout
  69  * DSS2 doesn't understand no rotation as an
  70  * option while V4L2 driver doesn't support
  71  * rotation in the case where VRFB is not built in
  72  * the kernel
  73  */
  74 enum vout_rotaion_type {
  75         VOUT_ROT_NONE   = 0,
  76         VOUT_ROT_VRFB   = 1,
  77 };
  78
  79 /*
  80  * This structure is used to store the DMA transfer parameters
  81  * for VRFB hidden buffer
  82  */
  83 struct vid_vrfb_dma {
  84         int dev_id;
  85         int dma_ch;
  86         int req_status;
  87         int tx_status;
  88         wait_queue_head_t wait;
  89 };
  90
  91 struct omapvideo_info {
  92         int id;
  93         int num_overlays;
  94         struct omap_overlay *overlays[MAX_OVLS];
  95         enum vout_rotaion_type rotation_type;
  96 };
  97
  98 struct omap2video_device {
  99         struct mutex  mtx;
 100
 101         int state;
 102
 103         struct v4l2_device v4l2_dev;
 104         struct omap_vout_device *vouts[MAX_VOUT_DEV];
 105
 106         int num_displays;
 107         struct omap_dss_device *displays[MAX_DISPLAYS];
 108         int num_overlays;
 109         struct omap_overlay *overlays[MAX_OVLS];
 110         int num_managers;
 111         struct omap_overlay_manager *managers[MAX_MANAGERS];
 112 };
 113
 114 /* per-device data structure */
 115 struct omap_vout_device {
 116
 117         struct omapvideo_info vid_info;
 118         struct video_device *vfd;
 119         struct omap2video_device *vid_dev;
 120         struct v4l2_ctrl_handler ctrl_handler;
 121         int vid;
 122         int opened;
 123
 124         /* we don't allow to change image fmt/size once buffer has
 125          * been allocated
 126          */
 127         int buffer_allocated;
 128         /* allow to reuse previously allocated buffer which is big enough */
 129         int buffer_size;
 130         /* keep buffer info across opens */
 131         unsigned long buf_virt_addr[VIDEO_MAX_FRAME];
 132         unsigned long buf_phy_addr[VIDEO_MAX_FRAME];
 133         enum omap_color_mode dss_mode;
 134
 135         /* we don't allow to request new buffer when old buffers are
 136          * still mmaped
 137          */
 138         int mmap_count;
 139
 140         spinlock_t vbq_lock;            /* spinlock for videobuf queues */
 141         unsigned long field_count;      /* field counter for videobuf_buffer */
 142
 143         /* non-NULL means streaming is in progress. */
 144         bool streaming;
 145
 146         struct v4l2_pix_format pix;
 147         struct v4l2_rect crop;
 148         struct v4l2_window win;
 149         struct v4l2_framebuffer fbuf;
 150
 151         /* Lock to protect the shared data structures in ioctl */
 152         struct mutex lock;
 153
 154         enum dss_rotation rotation;
 155         bool mirror;
 156         int flicker_filter;
 157
 158         int bpp; /* bytes per pixel */
 159         int vrfb_bpp; /* bytes per pixel with respect to VRFB */
 160
 161         struct vid_vrfb_dma vrfb_dma_tx;
 162         unsigned int smsshado_phy_addr[MAC_VRFB_CTXS];
 163         unsigned int smsshado_virt_addr[MAC_VRFB_CTXS];
 164         struct vrfb vrfb_context[MAC_VRFB_CTXS];
 165         bool vrfb_static_allocation;
 166         unsigned int smsshado_size;
 167         unsigned char pos;
 168
 169         int ps, vr_ps, line_length, first_int, field_id;
 170         enum v4l2_memory memory;
 171         struct videobuf_buffer *cur_frm, *next_frm;
 172         struct list_head dma_queue;
 173         u8 *queued_buf_addr[VIDEO_MAX_FRAME];
 174         u32 cropped_offset;
 175         s32 tv_field1_offset;
 176         void *isr_handle;
 177
 178         /* Buffer queue variables */
 179         struct omap_vout_device *vout;
 180         enum v4l2_buf_type type;
 181         struct videobuf_queue vbq;
 182         int io_allowed;
 183
 184 };
 185
 186 /*
 187  * Return true if rotation is 90 or 270
 188  */
 189 static inline int is_rotation_90_or_270(const struct omap_vout_device *vout)
 190 {
 191         return (vout->rotation == dss_rotation_90_degree ||
 192                         vout->rotation == dss_rotation_270_degree);
 193 }
 194
 195 /*
 196  * Return true if rotation is enabled
 197  */
 198 static inline int is_rotation_enabled(const struct omap_vout_device *vout)
 199 {
 200         return vout->rotation || vout->mirror;
 201 }
 202
 203 /*
 204  * Reverse the rotation degree if mirroring is enabled
 205  */
 206 static inline int calc_rotation(const struct omap_vout_device *vout)
 207 {
 208         if (!vout->mirror)
 209                 return vout->rotation;
 210
 211         switch (vout->rotation) {
 212         case dss_rotation_90_degree:
 213                 return dss_rotation_270_degree;
 214         case dss_rotation_270_degree:
 215                 return dss_rotation_90_degree;
 216         case dss_rotation_180_degree:
 217                 return dss_rotation_0_degree;
 218         default:
 219                 return dss_rotation_180_degree;
 220         }
 221 }
 222
 223 void omap_vout_free_buffers(struct omap_vout_device *vout);
 224 #endif  /* ifndef OMAP_VOUTDEF_H */