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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 
 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         char    *name;
 36         u32     pixelformat;
 37         u32     trans;
 38         u8      depth;
 39         u8      flags;
 40         u8      swap;
 41 };
 42 
 43 struct saa7146_standard
 44 {
 45         char          *name;
 46         v4l2_std_id   id;
 47 
 48         int v_offset;   /* number of lines of vertical offset before processing */
 49         int v_field;    /* number of lines in a field for HPS to process */
 50 
 51         int h_offset;   /* horizontal offset of processing window */
 52         int h_pixels;   /* number of horizontal pixels to process */
 53 
 54         int v_max_out;
 55         int h_max_out;
 56 };
 57 
 58 /* buffer for one video/vbi frame */
 59 struct saa7146_buf {
 60         /* common v4l buffer stuff -- must be first */
 61         struct videobuf_buffer vb;
 62 
 63         /* saa7146 specific */
 64         struct v4l2_pix_format  *fmt;
 65         int (*activate)(struct saa7146_dev *dev,
 66                         struct saa7146_buf *buf,
 67                         struct saa7146_buf *next);
 68 
 69         /* page tables */
 70         struct saa7146_pgtable  pt[3];
 71 };
 72 
 73 struct saa7146_dmaqueue {
 74         struct saa7146_dev      *dev;
 75         struct saa7146_buf      *curr;
 76         struct list_head        queue;
 77         struct timer_list       timeout;
 78 };
 79 
 80 struct saa7146_overlay {
 81         struct saa7146_fh       *fh;
 82         struct v4l2_window      win;
 83         struct v4l2_clip        clips[16];
 84         int                     nclips;
 85 };
 86 
 87 /* per open data */
 88 struct saa7146_fh {
 89         /* Must be the first field! */
 90         struct v4l2_fh          fh;
 91         struct saa7146_dev      *dev;
 92 
 93         /* video capture */
 94         struct videobuf_queue   video_q;
 95 
 96         /* vbi capture */
 97         struct videobuf_queue   vbi_q;
 98 
 99         unsigned int resources; /* resource management for device open */
100 };
101 
102 #define STATUS_OVERLAY  0x01
103 #define STATUS_CAPTURE  0x02
104 
105 struct saa7146_vv
106 {
107         /* vbi capture */
108         struct saa7146_dmaqueue         vbi_dmaq;
109         struct v4l2_vbi_format          vbi_fmt;
110         struct timer_list               vbi_read_timeout;
111         struct file                     *vbi_read_timeout_file;
112         /* vbi workaround interrupt queue */
113         wait_queue_head_t               vbi_wq;
114         int                             vbi_fieldcount;
115         struct saa7146_fh               *vbi_streaming;
116 
117         int                             video_status;
118         struct saa7146_fh               *video_fh;
119 
120         /* video overlay */
121         struct saa7146_overlay          ov;
122         struct v4l2_framebuffer         ov_fb;
123         struct saa7146_format           *ov_fmt;
124         struct saa7146_fh               *ov_suspend;
125 
126         /* video capture */
127         struct saa7146_dmaqueue         video_dmaq;
128         struct v4l2_pix_format          video_fmt;
129         enum v4l2_field                 last_field;
130 
131         /* common: fixme? shouldn't this be in saa7146_fh?
132            (this leads to a more complicated question: shall the driver
133            store the different settings (for example S_INPUT) for every open
134            and restore it appropriately, or should all settings be common for
135            all opens? currently, we do the latter, like all other
136            drivers do... */
137         struct saa7146_standard *standard;
138 
139         int     vflip;
140         int     hflip;
141         int     current_hps_source;
142         int     current_hps_sync;
143 
144         struct saa7146_dma      d_clipping;     /* pointer to clipping memory */
145 
146         unsigned int resources; /* resource management for device */
147 };
148 
149 /* flags */
150 #define SAA7146_USE_PORT_B_FOR_VBI      0x2     /* use input port b for vbi hardware bug workaround */
151 
152 struct saa7146_ext_vv
153 {
154         /* information about the video capabilities of the device */
155         int     inputs;
156         int     audios;
157         u32     capabilities;
158         int     flags;
159 
160         /* additionally supported transmission standards */
161         struct saa7146_standard *stds;
162         int num_stds;
163         int (*std_callback)(struct saa7146_dev*, struct saa7146_standard *);
164 
165         /* the extension can override this */
166         struct v4l2_ioctl_ops vid_ops;
167         struct v4l2_ioctl_ops vbi_ops;
168         /* pointer to the saa7146 core ops */
169         const struct v4l2_ioctl_ops *core_ops;
170 
171         struct v4l2_file_operations vbi_fops;
172 };
173 
174 struct saa7146_use_ops  {
175         void (*init)(struct saa7146_dev *, struct saa7146_vv *);
176         int(*open)(struct saa7146_dev *, struct file *);
177         void (*release)(struct saa7146_dev *, struct file *);
178         void (*irq_done)(struct saa7146_dev *, unsigned long status);
179         ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
180 };
181 
182 /* from saa7146_fops.c */
183 int saa7146_register_device(struct video_device *vid, struct saa7146_dev *dev, char *name, int type);
184 int saa7146_unregister_device(struct video_device *vid, struct saa7146_dev *dev);
185 void saa7146_buffer_finish(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, int state);
186 void saa7146_buffer_next(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,int vbi);
187 int saa7146_buffer_queue(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, struct saa7146_buf *buf);
188 void saa7146_buffer_timeout(struct timer_list *t);
189 void saa7146_dma_free(struct saa7146_dev* dev,struct videobuf_queue *q,
190                                                 struct saa7146_buf *buf);
191 
192 int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv);
193 int saa7146_vv_release(struct saa7146_dev* dev);
194 
195 /* from saa7146_hlp.c */
196 int saa7146_enable_overlay(struct saa7146_fh *fh);
197 void saa7146_disable_overlay(struct saa7146_fh *fh);
198 
199 void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next);
200 void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) ;
201 void saa7146_set_hps_source_and_sync(struct saa7146_dev *saa, int source, int sync);
202 void saa7146_set_gpio(struct saa7146_dev *saa, u8 pin, u8 data);
203 
204 /* from saa7146_video.c */
205 extern const struct v4l2_ioctl_ops saa7146_video_ioctl_ops;
206 extern const struct v4l2_ioctl_ops saa7146_vbi_ioctl_ops;
207 extern const struct saa7146_use_ops saa7146_video_uops;
208 int saa7146_start_preview(struct saa7146_fh *fh);
209 int saa7146_stop_preview(struct saa7146_fh *fh);
210 long saa7146_video_do_ioctl(struct file *file, unsigned int cmd, void *arg);
211 int saa7146_s_ctrl(struct v4l2_ctrl *ctrl);
212 
213 /* from saa7146_vbi.c */
214 extern const struct saa7146_use_ops saa7146_vbi_uops;
215 
216 /* resource management functions */
217 int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit);
218 void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits);
219 
220 #define RESOURCE_DMA1_HPS       0x1
221 #define RESOURCE_DMA2_CLP       0x2
222 #define RESOURCE_DMA3_BRS       0x4
223 
224 /* saa7146 source inputs */
225 #define SAA7146_HPS_SOURCE_PORT_A       0x00
226 #define SAA7146_HPS_SOURCE_PORT_B       0x01
227 #define SAA7146_HPS_SOURCE_YPB_CPA      0x02
228 #define SAA7146_HPS_SOURCE_YPA_CPB      0x03
229 
230 /* sync inputs */
231 #define SAA7146_HPS_SYNC_PORT_A         0x00
232 #define SAA7146_HPS_SYNC_PORT_B         0x01
233 
234 /* some memory sizes */
235 /* max. 16 clipping rectangles */
236 #define SAA7146_CLIPPING_MEM    (16 * 4 * sizeof(u32))
237 
238 /* some defines for the various clipping-modes */
239 #define SAA7146_CLIPPING_RECT           0x4
240 #define SAA7146_CLIPPING_RECT_INVERTED  0x5
241 #define SAA7146_CLIPPING_MASK           0x6
242 #define SAA7146_CLIPPING_MASK_INVERTED  0x7
243 
244 /* output formats: each entry holds four information */
245 #define RGB08_COMPOSED  0x0217 /* composed is used in the sense of "not-planar" */
246 /* this means: planar?=0, yuv2rgb-conversation-mode=2, dither=yes(=1), format-mode = 7 */
247 #define RGB15_COMPOSED  0x0213
248 #define RGB16_COMPOSED  0x0210
249 #define RGB24_COMPOSED  0x0201
250 #define RGB32_COMPOSED  0x0202
251 
252 #define Y8                      0x0006
253 #define YUV411_COMPOSED         0x0003
254 #define YUV422_COMPOSED         0x0000
255 /* this means: planar?=1, yuv2rgb-conversion-mode=0, dither=no(=0), format-mode = b */
256 #define YUV411_DECOMPOSED       0x100b
257 #define YUV422_DECOMPOSED       0x1009
258 #define YUV420_DECOMPOSED       0x100a
259 
260 #define IS_PLANAR(x) (x & 0xf000)
261 
262 /* misc defines */
263 #define SAA7146_NO_SWAP         (0x0)
264 #define SAA7146_TWO_BYTE_SWAP   (0x1)
265 #define SAA7146_FOUR_BYTE_SWAP  (0x2)
266 
267 #endif
268 

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