linux/include/media/drv-intf/saa7146_vv.h
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   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
  22struct  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
  34struct saa7146_format {
  35        u32     pixelformat;
  36        u32     trans;
  37        u8      depth;
  38        u8      flags;
  39        u8      swap;
  40};
  41
  42struct 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 */
  58struct 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
  72struct saa7146_dmaqueue {
  73        struct saa7146_dev      *dev;
  74        struct saa7146_buf      *curr;
  75        struct list_head        queue;
  76        struct timer_list       timeout;
  77};
  78
  79struct 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 */
  87struct 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
 104struct 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
 151struct 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
 173struct 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 */
 182int saa7146_register_device(struct video_device *vid, struct saa7146_dev *dev, char *name, int type);
 183int saa7146_unregister_device(struct video_device *vid, struct saa7146_dev *dev);
 184void saa7146_buffer_finish(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, int state);
 185void saa7146_buffer_next(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,int vbi);
 186int saa7146_buffer_queue(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, struct saa7146_buf *buf);
 187void saa7146_buffer_timeout(struct timer_list *t);
 188void saa7146_dma_free(struct saa7146_dev* dev,struct videobuf_queue *q,
 189                                                struct saa7146_buf *buf);
 190
 191int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv);
 192int saa7146_vv_release(struct saa7146_dev* dev);
 193
 194/* from saa7146_hlp.c */
 195int saa7146_enable_overlay(struct saa7146_fh *fh);
 196void saa7146_disable_overlay(struct saa7146_fh *fh);
 197
 198void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next);
 199void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) ;
 200void saa7146_set_hps_source_and_sync(struct saa7146_dev *saa, int source, int sync);
 201void saa7146_set_gpio(struct saa7146_dev *saa, u8 pin, u8 data);
 202
 203/* from saa7146_video.c */
 204extern const struct v4l2_ioctl_ops saa7146_video_ioctl_ops;
 205extern const struct v4l2_ioctl_ops saa7146_vbi_ioctl_ops;
 206extern const struct saa7146_use_ops saa7146_video_uops;
 207int saa7146_start_preview(struct saa7146_fh *fh);
 208int saa7146_stop_preview(struct saa7146_fh *fh);
 209long saa7146_video_do_ioctl(struct file *file, unsigned int cmd, void *arg);
 210int saa7146_s_ctrl(struct v4l2_ctrl *ctrl);
 211
 212/* from saa7146_vbi.c */
 213extern const struct saa7146_use_ops saa7146_vbi_uops;
 214
 215/* resource management functions */
 216int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit);
 217void 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
 267
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