root/include/media/drv-intf/saa7146_vv.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __SAA7146_VV__
   3 #define __SAA7146_VV__
   4 
   5 #include <media/v4l2-common.h>
   6 #include <media/v4l2-ioctl.h>
   7 #include <media/v4l2-fh.h>
   8 #include <media/drv-intf/saa7146.h>
   9 #include <media/videobuf-dma-sg.h>
  10 
  11 #define MAX_SAA7146_CAPTURE_BUFFERS     32      /* arbitrary */
  12 #define BUFFER_TIMEOUT     (HZ/2)  /* 0.5 seconds */
  13 
  14 #define WRITE_RPS0(x) do { \
  15         dev->d_rps0.cpu_addr[ count++ ] = cpu_to_le32(x); \
  16         } while (0);
  17 
  18 #define WRITE_RPS1(x) do { \
  19         dev->d_rps1.cpu_addr[ count++ ] = cpu_to_le32(x); \
  20         } while (0);
  21 
  22 struct  saa7146_video_dma {
  23         u32 base_odd;
  24         u32 base_even;
  25         u32 prot_addr;
  26         u32 pitch;
  27         u32 base_page;
  28         u32 num_line_byte;
  29 };
  30 
  31 #define FORMAT_BYTE_SWAP        0x1
  32 #define FORMAT_IS_PLANAR        0x2
  33 
  34 struct saa7146_format {
  35         u32     pixelformat;
  36         u32     trans;
  37         u8      depth;
  38         u8      flags;
  39         u8      swap;
  40 };
  41 
  42 struct saa7146_standard
  43 {
  44         char          *name;
  45         v4l2_std_id   id;
  46 
  47         int v_offset;   /* number of lines of vertical offset before processing */
  48         int v_field;    /* number of lines in a field for HPS to process */
  49 
  50         int h_offset;   /* horizontal offset of processing window */
  51         int h_pixels;   /* number of horizontal pixels to process */
  52 
  53         int v_max_out;
  54         int h_max_out;
  55 };
  56 
  57 /* buffer for one video/vbi frame */
  58 struct saa7146_buf {
  59         /* common v4l buffer stuff -- must be first */
  60         struct videobuf_buffer vb;
  61 
  62         /* saa7146 specific */
  63         struct v4l2_pix_format  *fmt;
  64         int (*activate)(struct saa7146_dev *dev,
  65                         struct saa7146_buf *buf,
  66                         struct saa7146_buf *next);
  67 
  68         /* page tables */
  69         struct saa7146_pgtable  pt[3];
  70 };
  71 
  72 struct saa7146_dmaqueue {
  73         struct saa7146_dev      *dev;
  74         struct saa7146_buf      *curr;
  75         struct list_head        queue;
  76         struct timer_list       timeout;
  77 };
  78 
  79 struct saa7146_overlay {
  80         struct saa7146_fh       *fh;
  81         struct v4l2_window      win;
  82         struct v4l2_clip        clips[16];
  83         int                     nclips;
  84 };
  85 
  86 /* per open data */
  87 struct saa7146_fh {
  88         /* Must be the first field! */
  89         struct v4l2_fh          fh;
  90         struct saa7146_dev      *dev;
  91 
  92         /* video capture */
  93         struct videobuf_queue   video_q;
  94 
  95         /* vbi capture */
  96         struct videobuf_queue   vbi_q;
  97 
  98         unsigned int resources; /* resource management for device open */
  99 };
 100 
 101 #define STATUS_OVERLAY  0x01
 102 #define STATUS_CAPTURE  0x02
 103 
 104 struct saa7146_vv
 105 {
 106         /* vbi capture */
 107         struct saa7146_dmaqueue         vbi_dmaq;
 108         struct v4l2_vbi_format          vbi_fmt;
 109         struct timer_list               vbi_read_timeout;
 110         struct file                     *vbi_read_timeout_file;
 111         /* vbi workaround interrupt queue */
 112         wait_queue_head_t               vbi_wq;
 113         int                             vbi_fieldcount;
 114         struct saa7146_fh               *vbi_streaming;
 115 
 116         int                             video_status;
 117         struct saa7146_fh               *video_fh;
 118 
 119         /* video overlay */
 120         struct saa7146_overlay          ov;
 121         struct v4l2_framebuffer         ov_fb;
 122         struct saa7146_format           *ov_fmt;
 123         struct saa7146_fh               *ov_suspend;
 124 
 125         /* video capture */
 126         struct saa7146_dmaqueue         video_dmaq;
 127         struct v4l2_pix_format          video_fmt;
 128         enum v4l2_field                 last_field;
 129 
 130         /* common: fixme? shouldn't this be in saa7146_fh?
 131            (this leads to a more complicated question: shall the driver
 132            store the different settings (for example S_INPUT) for every open
 133            and restore it appropriately, or should all settings be common for
 134            all opens? currently, we do the latter, like all other
 135            drivers do... */
 136         struct saa7146_standard *standard;
 137 
 138         int     vflip;
 139         int     hflip;
 140         int     current_hps_source;
 141         int     current_hps_sync;
 142 
 143         struct saa7146_dma      d_clipping;     /* pointer to clipping memory */
 144 
 145         unsigned int resources; /* resource management for device */
 146 };
 147 
 148 /* flags */
 149 #define SAA7146_USE_PORT_B_FOR_VBI      0x2     /* use input port b for vbi hardware bug workaround */
 150 
 151 struct saa7146_ext_vv
 152 {
 153         /* information about the video capabilities of the device */
 154         int     inputs;
 155         int     audios;
 156         u32     capabilities;
 157         int     flags;
 158 
 159         /* additionally supported transmission standards */
 160         struct saa7146_standard *stds;
 161         int num_stds;
 162         int (*std_callback)(struct saa7146_dev*, struct saa7146_standard *);
 163 
 164         /* the extension can override this */
 165         struct v4l2_ioctl_ops vid_ops;
 166         struct v4l2_ioctl_ops vbi_ops;
 167         /* pointer to the saa7146 core ops */
 168         const struct v4l2_ioctl_ops *core_ops;
 169 
 170         struct v4l2_file_operations vbi_fops;
 171 };
 172 
 173 struct saa7146_use_ops  {
 174         void (*init)(struct saa7146_dev *, struct saa7146_vv *);
 175         int(*open)(struct saa7146_dev *, struct file *);
 176         void (*release)(struct saa7146_dev *, struct file *);
 177         void (*irq_done)(struct saa7146_dev *, unsigned long status);
 178         ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
 179 };
 180 
 181 /* from saa7146_fops.c */
 182 int saa7146_register_device(struct video_device *vid, struct saa7146_dev *dev, char *name, int type);
 183 int saa7146_unregister_device(struct video_device *vid, struct saa7146_dev *dev);
 184 void saa7146_buffer_finish(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, int state);
 185 void saa7146_buffer_next(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,int vbi);
 186 int saa7146_buffer_queue(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, struct saa7146_buf *buf);
 187 void saa7146_buffer_timeout(struct timer_list *t);
 188 void saa7146_dma_free(struct saa7146_dev* dev,struct videobuf_queue *q,
 189                                                 struct saa7146_buf *buf);
 190 
 191 int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv);
 192 int saa7146_vv_release(struct saa7146_dev* dev);
 193 
 194 /* from saa7146_hlp.c */
 195 int saa7146_enable_overlay(struct saa7146_fh *fh);
 196 void saa7146_disable_overlay(struct saa7146_fh *fh);
 197 
 198 void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next);
 199 void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) ;
 200 void saa7146_set_hps_source_and_sync(struct saa7146_dev *saa, int source, int sync);
 201 void saa7146_set_gpio(struct saa7146_dev *saa, u8 pin, u8 data);
 202 
 203 /* from saa7146_video.c */
 204 extern const struct v4l2_ioctl_ops saa7146_video_ioctl_ops;
 205 extern const struct v4l2_ioctl_ops saa7146_vbi_ioctl_ops;
 206 extern const struct saa7146_use_ops saa7146_video_uops;
 207 int saa7146_start_preview(struct saa7146_fh *fh);
 208 int saa7146_stop_preview(struct saa7146_fh *fh);
 209 long saa7146_video_do_ioctl(struct file *file, unsigned int cmd, void *arg);
 210 int saa7146_s_ctrl(struct v4l2_ctrl *ctrl);
 211 
 212 /* from saa7146_vbi.c */
 213 extern const struct saa7146_use_ops saa7146_vbi_uops;
 214 
 215 /* resource management functions */
 216 int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit);
 217 void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits);
 218 
 219 #define RESOURCE_DMA1_HPS       0x1
 220 #define RESOURCE_DMA2_CLP       0x2
 221 #define RESOURCE_DMA3_BRS       0x4
 222 
 223 /* saa7146 source inputs */
 224 #define SAA7146_HPS_SOURCE_PORT_A       0x00
 225 #define SAA7146_HPS_SOURCE_PORT_B       0x01
 226 #define SAA7146_HPS_SOURCE_YPB_CPA      0x02
 227 #define SAA7146_HPS_SOURCE_YPA_CPB      0x03
 228 
 229 /* sync inputs */
 230 #define SAA7146_HPS_SYNC_PORT_A         0x00
 231 #define SAA7146_HPS_SYNC_PORT_B         0x01
 232 
 233 /* some memory sizes */
 234 /* max. 16 clipping rectangles */
 235 #define SAA7146_CLIPPING_MEM    (16 * 4 * sizeof(u32))
 236 
 237 /* some defines for the various clipping-modes */
 238 #define SAA7146_CLIPPING_RECT           0x4
 239 #define SAA7146_CLIPPING_RECT_INVERTED  0x5
 240 #define SAA7146_CLIPPING_MASK           0x6
 241 #define SAA7146_CLIPPING_MASK_INVERTED  0x7
 242 
 243 /* output formats: each entry holds four information */
 244 #define RGB08_COMPOSED  0x0217 /* composed is used in the sense of "not-planar" */
 245 /* this means: planar?=0, yuv2rgb-conversation-mode=2, dither=yes(=1), format-mode = 7 */
 246 #define RGB15_COMPOSED  0x0213
 247 #define RGB16_COMPOSED  0x0210
 248 #define RGB24_COMPOSED  0x0201
 249 #define RGB32_COMPOSED  0x0202
 250 
 251 #define Y8                      0x0006
 252 #define YUV411_COMPOSED         0x0003
 253 #define YUV422_COMPOSED         0x0000
 254 /* this means: planar?=1, yuv2rgb-conversion-mode=0, dither=no(=0), format-mode = b */
 255 #define YUV411_DECOMPOSED       0x100b
 256 #define YUV422_DECOMPOSED       0x1009
 257 #define YUV420_DECOMPOSED       0x100a
 258 
 259 #define IS_PLANAR(x) (x & 0xf000)
 260 
 261 /* misc defines */
 262 #define SAA7146_NO_SWAP         (0x0)
 263 #define SAA7146_TWO_BYTE_SWAP   (0x1)
 264 #define SAA7146_FOUR_BYTE_SWAP  (0x2)
 265 
 266 #endif