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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         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
267 

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