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Linux 3.12.39
[linux/fpc-iii.git] / drivers / media / common / saa7146 / saa7146_hlp.c
blobbe746d1aee9a2afd94079c151a9ec1a22d01873c
1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
2
3 #include <linux/kernel.h>
4 #include <linux/export.h>
5 #include <media/saa7146_vv.h>
6
7 static void calculate_output_format_register(struct saa7146_dev* saa, u32 palette, u32* clip_format)
8 {
9 /* clear out the necessary bits */
10 *clip_format &= 0x0000ffff;
11 /* set these bits new */
12 *clip_format |= (( ((palette&0xf00)>>8) << 30) | ((palette&0x00f) << 24) | (((palette&0x0f0)>>4) << 16));
13 }
14
15 static void calculate_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync, u32* hps_ctrl)
16 {
17 *hps_ctrl &= ~(MASK_30 | MASK_31 | MASK_28);
18 *hps_ctrl |= (source << 30) | (sync << 28);
19 }
20
21 static void calculate_hxo_and_hyo(struct saa7146_vv *vv, u32* hps_h_scale, u32* hps_ctrl)
22 {
23 int hyo = 0, hxo = 0;
24
25 hyo = vv->standard->v_offset;
26 hxo = vv->standard->h_offset;
27
28 *hps_h_scale &= ~(MASK_B0 | 0xf00);
29 *hps_h_scale |= (hxo << 0);
30
31 *hps_ctrl &= ~(MASK_W0 | MASK_B2);
32 *hps_ctrl |= (hyo << 12);
33 }
34
35 /* helper functions for the calculation of the horizontal- and vertical
36 scaling registers, clip-format-register etc ...
37 these functions take pointers to the (most-likely read-out
38 original-values) and manipulate them according to the requested
39 changes.
40 */
41
42 /* hps_coeff used for CXY and CXUV; scale 1/1 -> scale 1/64 */
43 static struct {
44 u16 hps_coeff;
45 u16 weight_sum;
46 } hps_h_coeff_tab [] = {
47 {0x00, 2}, {0x02, 4}, {0x00, 4}, {0x06, 8}, {0x02, 8},
48 {0x08, 8}, {0x00, 8}, {0x1E, 16}, {0x0E, 8}, {0x26, 8},
49 {0x06, 8}, {0x42, 8}, {0x02, 8}, {0x80, 8}, {0x00, 8},
50 {0xFE, 16}, {0xFE, 8}, {0x7E, 8}, {0x7E, 8}, {0x3E, 8},
51 {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, {0x0E, 8}, {0x0E, 8},
52 {0x06, 8}, {0x06, 8}, {0x02, 8}, {0x02, 8}, {0x00, 8},
53 {0x00, 8}, {0xFE, 16}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8},
54 {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8},
55 {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8},
56 {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0x7E, 8},
57 {0x7E, 8}, {0x3E, 8}, {0x3E, 8}, {0x1E, 8}, {0x1E, 8},
58 {0x0E, 8}, {0x0E, 8}, {0x06, 8}, {0x06, 8}, {0x02, 8},
59 {0x02, 8}, {0x00, 8}, {0x00, 8}, {0xFE, 16}
60 };
61
62 /* table of attenuation values for horizontal scaling */
63 static u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0};
64
65 /* calculate horizontal scale registers */
66 static int calculate_h_scale_registers(struct saa7146_dev *dev,
67 int in_x, int out_x, int flip_lr,
68 u32* hps_ctrl, u32* hps_v_gain, u32* hps_h_prescale, u32* hps_h_scale)
69 {
70 /* horizontal prescaler */
71 u32 dcgx = 0, xpsc = 0, xacm = 0, cxy = 0, cxuv = 0;
72 /* horizontal scaler */
73 u32 xim = 0, xp = 0, xsci =0;
74 /* vertical scale & gain */
75 u32 pfuv = 0;
76
77 /* helper variables */
78 u32 h_atten = 0, i = 0;
79
80 if ( 0 == out_x ) {
81 return -EINVAL;
82 }
83
84 /* mask out vanity-bit */
85 *hps_ctrl &= ~MASK_29;
86
87 /* calculate prescale-(xspc)-value: [n .. 1/2) : 1
88 [1/2 .. 1/3) : 2
89 [1/3 .. 1/4) : 3
90 ... */
91 if (in_x > out_x) {
92 xpsc = in_x / out_x;
93 }
94 else {
95 /* zooming */
96 xpsc = 1;
97 }
98
99 /* if flip_lr-bit is set, number of pixels after
100 horizontal prescaling must be < 384 */
101 if ( 0 != flip_lr ) {
102
103 /* set vanity bit */
104 *hps_ctrl |= MASK_29;
105
106 while (in_x / xpsc >= 384 )
107 xpsc++;
108 }
109 /* if zooming is wanted, number of pixels after
110 horizontal prescaling must be < 768 */
111 else {
112 while ( in_x / xpsc >= 768 )
113 xpsc++;
114 }
115
116 /* maximum prescale is 64 (p.69) */
117 if ( xpsc > 64 )
118 xpsc = 64;
119
120 /* keep xacm clear*/
121 xacm = 0;
122
123 /* set horizontal filter parameters (CXY = CXUV) */
124 cxy = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].hps_coeff;
125 cxuv = cxy;
126
127 /* calculate and set horizontal fine scale (xsci) */
128
129 /* bypass the horizontal scaler ? */
130 if ( (in_x == out_x) && ( 1 == xpsc ) )
131 xsci = 0x400;
132 else
133 xsci = ( (1024 * in_x) / (out_x * xpsc) ) + xpsc;
134
135 /* set start phase for horizontal fine scale (xp) to 0 */
136 xp = 0;
137
138 /* set xim, if we bypass the horizontal scaler */
139 if ( 0x400 == xsci )
140 xim = 1;
141 else
142 xim = 0;
143
144 /* if the prescaler is bypassed, enable horizontal
145 accumulation mode (xacm) and clear dcgx */
146 if( 1 == xpsc ) {
147 xacm = 1;
148 dcgx = 0;
149 } else {
150 xacm = 0;
151 /* get best match in the table of attenuations
152 for horizontal scaling */
153 h_atten = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].weight_sum;
154
155 for (i = 0; h_attenuation[i] != 0; i++) {
156 if (h_attenuation[i] >= h_atten)
157 break;
158 }
159
160 dcgx = i;
161 }
162
163 /* the horizontal scaling increment controls the UV filter
164 to reduce the bandwidth to improve the display quality,
165 so set it ... */
166 if ( xsci == 0x400)
167 pfuv = 0x00;
168 else if ( xsci < 0x600)
169 pfuv = 0x01;
170 else if ( xsci < 0x680)
171 pfuv = 0x11;
172 else if ( xsci < 0x700)
173 pfuv = 0x22;
174 else
175 pfuv = 0x33;
176
177
178 *hps_v_gain &= MASK_W0|MASK_B2;
179 *hps_v_gain |= (pfuv << 24);
180
181 *hps_h_scale &= ~(MASK_W1 | 0xf000);
182 *hps_h_scale |= (xim << 31) | (xp << 24) | (xsci << 12);
183
184 *hps_h_prescale |= (dcgx << 27) | ((xpsc-1) << 18) | (xacm << 17) | (cxy << 8) | (cxuv << 0);
185
186 return 0;
187 }
188
189 static struct {
190 u16 hps_coeff;
191 u16 weight_sum;
192 } hps_v_coeff_tab [] = {
193 {0x0100, 2}, {0x0102, 4}, {0x0300, 4}, {0x0106, 8}, {0x0502, 8},
194 {0x0708, 8}, {0x0F00, 8}, {0x011E, 16}, {0x110E, 16}, {0x1926, 16},
195 {0x3906, 16}, {0x3D42, 16}, {0x7D02, 16}, {0x7F80, 16}, {0xFF00, 16},
196 {0x01FE, 32}, {0x01FE, 32}, {0x817E, 32}, {0x817E, 32}, {0xC13E, 32},
197 {0xC13E, 32}, {0xE11E, 32}, {0xE11E, 32}, {0xF10E, 32}, {0xF10E, 32},
198 {0xF906, 32}, {0xF906, 32}, {0xFD02, 32}, {0xFD02, 32}, {0xFF00, 32},
199 {0xFF00, 32}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64},
200 {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64},
201 {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64},
202 {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x817E, 64},
203 {0x817E, 64}, {0xC13E, 64}, {0xC13E, 64}, {0xE11E, 64}, {0xE11E, 64},
204 {0xF10E, 64}, {0xF10E, 64}, {0xF906, 64}, {0xF906, 64}, {0xFD02, 64},
205 {0xFD02, 64}, {0xFF00, 64}, {0xFF00, 64}, {0x01FE, 128}
206 };
207
208 /* table of attenuation values for vertical scaling */
209 static u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0};
210
211 /* calculate vertical scale registers */
212 static int calculate_v_scale_registers(struct saa7146_dev *dev, enum v4l2_field field,
213 int in_y, int out_y, u32* hps_v_scale, u32* hps_v_gain)
214 {
215 int lpi = 0;
216
217 /* vertical scaling */
218 u32 yacm = 0, ysci = 0, yacl = 0, ypo = 0, ype = 0;
219 /* vertical scale & gain */
220 u32 dcgy = 0, cya_cyb = 0;
221
222 /* helper variables */
223 u32 v_atten = 0, i = 0;
224
225 /* error, if vertical zooming */
226 if ( in_y < out_y ) {
227 return -EINVAL;
228 }
229
230 /* linear phase interpolation may be used
231 if scaling is between 1 and 1/2 (both fields used)
232 or scaling is between 1/2 and 1/4 (if only one field is used) */
233
234 if (V4L2_FIELD_HAS_BOTH(field)) {
235 if( 2*out_y >= in_y) {
236 lpi = 1;
237 }
238 } else if (field == V4L2_FIELD_TOP
239 || field == V4L2_FIELD_ALTERNATE
240 || field == V4L2_FIELD_BOTTOM) {
241 if( 4*out_y >= in_y ) {
242 lpi = 1;
243 }
244 out_y *= 2;
245 }
246 if( 0 != lpi ) {
247
248 yacm = 0;
249 yacl = 0;
250 cya_cyb = 0x00ff;
251
252 /* calculate scaling increment */
253 if ( in_y > out_y )
254 ysci = ((1024 * in_y) / (out_y + 1)) - 1024;
255 else
256 ysci = 0;
257
258 dcgy = 0;
259
260 /* calculate ype and ypo */
261 ype = ysci / 16;
262 ypo = ype + (ysci / 64);
263
264 } else {
265 yacm = 1;
266
267 /* calculate scaling increment */
268 ysci = (((10 * 1024 * (in_y - out_y - 1)) / in_y) + 9) / 10;
269
270 /* calculate ype and ypo */
271 ypo = ype = ((ysci + 15) / 16);
272
273 /* the sequence length interval (yacl) has to be set according
274 to the prescale value, e.g. [n .. 1/2) : 0
275 [1/2 .. 1/3) : 1
276 [1/3 .. 1/4) : 2
277 ... */
278 if ( ysci < 512) {
279 yacl = 0;
280 } else {
281 yacl = ( ysci / (1024 - ysci) );
282 }
283
284 /* get filter coefficients for cya, cyb from table hps_v_coeff_tab */
285 cya_cyb = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].hps_coeff;
286
287 /* get best match in the table of attenuations for vertical scaling */
288 v_atten = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].weight_sum;
289
290 for (i = 0; v_attenuation[i] != 0; i++) {
291 if (v_attenuation[i] >= v_atten)
292 break;
293 }
294
295 dcgy = i;
296 }
297
298 /* ypo and ype swapped in spec ? */
299 *hps_v_scale |= (yacm << 31) | (ysci << 21) | (yacl << 15) | (ypo << 8 ) | (ype << 1);
300
301 *hps_v_gain &= ~(MASK_W0|MASK_B2);
302 *hps_v_gain |= (dcgy << 16) | (cya_cyb << 0);
303
304 return 0;
305 }
306
307 /* simple bubble-sort algorithm with duplicate elimination */
308 static int sort_and_eliminate(u32* values, int* count)
309 {
310 int low = 0, high = 0, top = 0, temp = 0;
311 int cur = 0, next = 0;
312
313 /* sanity checks */
314 if( (0 > *count) || (NULL == values) ) {
315 return -EINVAL;
316 }
317
318 /* bubble sort the first @count items of the array @values */
319 for( top = *count; top > 0; top--) {
320 for( low = 0, high = 1; high < top; low++, high++) {
321 if( values[low] > values[high] ) {
322 temp = values[low];
323 values[low] = values[high];
324 values[high] = temp;
325 }
326 }
327 }
328
329 /* remove duplicate items */
330 for( cur = 0, next = 1; next < *count; next++) {
331 if( values[cur] != values[next])
332 values[++cur] = values[next];
333 }
334
335 *count = cur + 1;
336
337 return 0;
338 }
339
340 static void calculate_clipping_registers_rect(struct saa7146_dev *dev, struct saa7146_fh *fh,
341 struct saa7146_video_dma *vdma2, u32* clip_format, u32* arbtr_ctrl, enum v4l2_field field)
342 {
343 struct saa7146_vv *vv = dev->vv_data;
344 __le32 *clipping = vv->d_clipping.cpu_addr;
345
346 int width = vv->ov.win.w.width;
347 int height = vv->ov.win.w.height;
348 int clipcount = vv->ov.nclips;
349
350 u32 line_list[32];
351 u32 pixel_list[32];
352 int numdwords = 0;
353
354 int i = 0, j = 0;
355 int cnt_line = 0, cnt_pixel = 0;
356
357 int x[32], y[32], w[32], h[32];
358
359 /* clear out memory */
360 memset(&line_list[0], 0x00, sizeof(u32)*32);
361 memset(&pixel_list[0], 0x00, sizeof(u32)*32);
362 memset(clipping, 0x00, SAA7146_CLIPPING_MEM);
363
364 /* fill the line and pixel-lists */
365 for(i = 0; i < clipcount; i++) {
366 int l = 0, r = 0, t = 0, b = 0;
367
368 x[i] = vv->ov.clips[i].c.left;
369 y[i] = vv->ov.clips[i].c.top;
370 w[i] = vv->ov.clips[i].c.width;
371 h[i] = vv->ov.clips[i].c.height;
372
373 if( w[i] < 0) {
374 x[i] += w[i]; w[i] = -w[i];
375 }
376 if( h[i] < 0) {
377 y[i] += h[i]; h[i] = -h[i];
378 }
379 if( x[i] < 0) {
380 w[i] += x[i]; x[i] = 0;
381 }
382 if( y[i] < 0) {
383 h[i] += y[i]; y[i] = 0;
384 }
385 if( 0 != vv->vflip ) {
386 y[i] = height - y[i] - h[i];
387 }
388
389 l = x[i];
390 r = x[i]+w[i];
391 t = y[i];
392 b = y[i]+h[i];
393
394 /* insert left/right coordinates */
395 pixel_list[ 2*i ] = min_t(int, l, width);
396 pixel_list[(2*i)+1] = min_t(int, r, width);
397 /* insert top/bottom coordinates */
398 line_list[ 2*i ] = min_t(int, t, height);
399 line_list[(2*i)+1] = min_t(int, b, height);
400 }
401
402 /* sort and eliminate lists */
403 cnt_line = cnt_pixel = 2*clipcount;
404 sort_and_eliminate( &pixel_list[0], &cnt_pixel );
405 sort_and_eliminate( &line_list[0], &cnt_line );
406
407 /* calculate the number of used u32s */
408 numdwords = max_t(int, (cnt_line+1), (cnt_pixel+1))*2;
409 numdwords = max_t(int, 4, numdwords);
410 numdwords = min_t(int, 64, numdwords);
411
412 /* fill up cliptable */
413 for(i = 0; i < cnt_pixel; i++) {
414 clipping[2*i] |= cpu_to_le32(pixel_list[i] << 16);
415 }
416 for(i = 0; i < cnt_line; i++) {
417 clipping[(2*i)+1] |= cpu_to_le32(line_list[i] << 16);
418 }
419
420 /* fill up cliptable with the display infos */
421 for(j = 0; j < clipcount; j++) {
422
423 for(i = 0; i < cnt_pixel; i++) {
424
425 if( x[j] < 0)
426 x[j] = 0;
427
428 if( pixel_list[i] < (x[j] + w[j])) {
429
430 if ( pixel_list[i] >= x[j] ) {
431 clipping[2*i] |= cpu_to_le32(1 << j);
432 }
433 }
434 }
435 for(i = 0; i < cnt_line; i++) {
436
437 if( y[j] < 0)
438 y[j] = 0;
439
440 if( line_list[i] < (y[j] + h[j]) ) {
441
442 if( line_list[i] >= y[j] ) {
443 clipping[(2*i)+1] |= cpu_to_le32(1 << j);
444 }
445 }
446 }
447 }
448
449 /* adjust arbitration control register */
450 *arbtr_ctrl &= 0xffff00ff;
451 *arbtr_ctrl |= 0x00001c00;
452
453 vdma2->base_even = vv->d_clipping.dma_handle;
454 vdma2->base_odd = vv->d_clipping.dma_handle;
455 vdma2->prot_addr = vv->d_clipping.dma_handle+((sizeof(u32))*(numdwords));
456 vdma2->base_page = 0x04;
457 vdma2->pitch = 0x00;
458 vdma2->num_line_byte = (0 << 16 | (sizeof(u32))*(numdwords-1) );
459
460 /* set clipping-mode. this depends on the field(s) used */
461 *clip_format &= 0xfffffff7;
462 if (V4L2_FIELD_HAS_BOTH(field)) {
463 *clip_format |= 0x00000008;
464 } else {
465 *clip_format |= 0x00000000;
466 }
467 }
468
469 /* disable clipping */
470 static void saa7146_disable_clipping(struct saa7146_dev *dev)
471 {
472 u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL);
473
474 /* mask out relevant bits (=lower word)*/
475 clip_format &= MASK_W1;
476
477 /* upload clipping-registers*/
478 saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format);
479 saa7146_write(dev, MC2, (MASK_05 | MASK_21));
480
481 /* disable video dma2 */
482 saa7146_write(dev, MC1, MASK_21);
483 }
484
485 static void saa7146_set_clipping_rect(struct saa7146_fh *fh)
486 {
487 struct saa7146_dev *dev = fh->dev;
488 struct saa7146_vv *vv = dev->vv_data;
489 enum v4l2_field field = vv->ov.win.field;
490 struct saa7146_video_dma vdma2;
491 u32 clip_format;
492 u32 arbtr_ctrl;
493
494 /* check clipcount, disable clipping if clipcount == 0*/
495 if (vv->ov.nclips == 0) {
496 saa7146_disable_clipping(dev);
497 return;
498 }
499
500 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL);
501 arbtr_ctrl = saa7146_read(dev, PCI_BT_V1);
502
503 calculate_clipping_registers_rect(dev, fh, &vdma2, &clip_format, &arbtr_ctrl, field);
504
505 /* set clipping format */
506 clip_format &= 0xffff0008;
507 clip_format |= (SAA7146_CLIPPING_RECT << 4);
508
509 /* prepare video dma2 */
510 saa7146_write(dev, BASE_EVEN2, vdma2.base_even);
511 saa7146_write(dev, BASE_ODD2, vdma2.base_odd);
512 saa7146_write(dev, PROT_ADDR2, vdma2.prot_addr);
513 saa7146_write(dev, BASE_PAGE2, vdma2.base_page);
514 saa7146_write(dev, PITCH2, vdma2.pitch);
515 saa7146_write(dev, NUM_LINE_BYTE2, vdma2.num_line_byte);
516
517 /* prepare the rest */
518 saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format);
519 saa7146_write(dev, PCI_BT_V1, arbtr_ctrl);
520
521 /* upload clip_control-register, clipping-registers, enable video dma2 */
522 saa7146_write(dev, MC2, (MASK_05 | MASK_21 | MASK_03 | MASK_19));
523 saa7146_write(dev, MC1, (MASK_05 | MASK_21));
524 }
525
526 static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, enum v4l2_field field)
527 {
528 struct saa7146_vv *vv = dev->vv_data;
529
530 int source = vv->current_hps_source;
531 int sync = vv->current_hps_sync;
532
533 u32 hps_v_scale = 0, hps_v_gain = 0, hps_ctrl = 0, hps_h_prescale = 0, hps_h_scale = 0;
534
535 /* set vertical scale */
536 hps_v_scale = 0; /* all bits get set by the function-call */
537 hps_v_gain = 0; /* fixme: saa7146_read(dev, HPS_V_GAIN);*/
538 calculate_v_scale_registers(dev, field, vv->standard->v_field*2, height, &hps_v_scale, &hps_v_gain);
539
540 /* set horizontal scale */
541 hps_ctrl = 0;
542 hps_h_prescale = 0; /* all bits get set in the function */
543 hps_h_scale = 0;
544 calculate_h_scale_registers(dev, vv->standard->h_pixels, width, vv->hflip, &hps_ctrl, &hps_v_gain, &hps_h_prescale, &hps_h_scale);
545
546 /* set hyo and hxo */
547 calculate_hxo_and_hyo(vv, &hps_h_scale, &hps_ctrl);
548 calculate_hps_source_and_sync(dev, source, sync, &hps_ctrl);
549
550 /* write out new register contents */
551 saa7146_write(dev, HPS_V_SCALE, hps_v_scale);
552 saa7146_write(dev, HPS_V_GAIN, hps_v_gain);
553 saa7146_write(dev, HPS_CTRL, hps_ctrl);
554 saa7146_write(dev, HPS_H_PRESCALE,hps_h_prescale);
555 saa7146_write(dev, HPS_H_SCALE, hps_h_scale);
556
557 /* upload shadow-ram registers */
558 saa7146_write(dev, MC2, (MASK_05 | MASK_06 | MASK_21 | MASK_22) );
559 }
560
561 /* calculate the new memory offsets for a desired position */
562 static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat)
563 {
564 struct saa7146_vv *vv = dev->vv_data;
565 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat);
566
567 int b_depth = vv->ov_fmt->depth;
568 int b_bpl = vv->ov_fb.fmt.bytesperline;
569 /* The unsigned long cast is to remove a 64-bit compile warning since
570 it looks like a 64-bit address is cast to a 32-bit value, even
571 though the base pointer is really a 32-bit physical address that
572 goes into a 32-bit DMA register.
573 FIXME: might not work on some 64-bit platforms, but see the FIXME
574 in struct v4l2_framebuffer (videodev2.h) for that.
575 */
576 u32 base = (u32)(unsigned long)vv->ov_fb.base;
577
578 struct saa7146_video_dma vdma1;
579
580 /* calculate memory offsets for picture, look if we shall top-down-flip */
581 vdma1.pitch = 2*b_bpl;
582 if ( 0 == vv->vflip ) {
583 vdma1.base_even = base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8));
584 vdma1.base_odd = vdma1.base_even + (vdma1.pitch / 2);
585 vdma1.prot_addr = vdma1.base_even + (w_height * (vdma1.pitch / 2));
586 }
587 else {
588 vdma1.base_even = base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8));
589 vdma1.base_odd = vdma1.base_even - (vdma1.pitch / 2);
590 vdma1.prot_addr = vdma1.base_odd - (w_height * (vdma1.pitch / 2));
591 }
592
593 if (V4L2_FIELD_HAS_BOTH(field)) {
594 } else if (field == V4L2_FIELD_ALTERNATE) {
595 /* fixme */
596 vdma1.base_odd = vdma1.prot_addr;
597 vdma1.pitch /= 2;
598 } else if (field == V4L2_FIELD_TOP) {
599 vdma1.base_odd = vdma1.prot_addr;
600 vdma1.pitch /= 2;
601 } else if (field == V4L2_FIELD_BOTTOM) {
602 vdma1.base_odd = vdma1.base_even;
603 vdma1.base_even = vdma1.prot_addr;
604 vdma1.pitch /= 2;
605 }
606
607 if ( 0 != vv->vflip ) {
608 vdma1.pitch *= -1;
609 }
610
611 vdma1.base_page = sfmt->swap;
612 vdma1.num_line_byte = (vv->standard->v_field<<16)+vv->standard->h_pixels;
613
614 saa7146_write_out_dma(dev, 1, &vdma1);
615 }
616
617 static void saa7146_set_output_format(struct saa7146_dev *dev, unsigned long palette)
618 {
619 u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL);
620
621 /* call helper function */
622 calculate_output_format_register(dev,palette,&clip_format);
623
624 /* update the hps registers */
625 saa7146_write(dev, CLIP_FORMAT_CTRL, clip_format);
626 saa7146_write(dev, MC2, (MASK_05 | MASK_21));
627 }
628
629 /* select input-source */
630 void saa7146_set_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync)
631 {
632 struct saa7146_vv *vv = dev->vv_data;
633 u32 hps_ctrl = 0;
634
635 /* read old state */
636 hps_ctrl = saa7146_read(dev, HPS_CTRL);
637
638 hps_ctrl &= ~( MASK_31 | MASK_30 | MASK_28 );
639 hps_ctrl |= (source << 30) | (sync << 28);
640
641 /* write back & upload register */
642 saa7146_write(dev, HPS_CTRL, hps_ctrl);
643 saa7146_write(dev, MC2, (MASK_05 | MASK_21));
644
645 vv->current_hps_source = source;
646 vv->current_hps_sync = sync;
647 }
648 EXPORT_SYMBOL_GPL(saa7146_set_hps_source_and_sync);
649
650 int saa7146_enable_overlay(struct saa7146_fh *fh)
651 {
652 struct saa7146_dev *dev = fh->dev;
653 struct saa7146_vv *vv = dev->vv_data;
654
655 saa7146_set_window(dev, vv->ov.win.w.width, vv->ov.win.w.height, vv->ov.win.field);
656 saa7146_set_position(dev, vv->ov.win.w.left, vv->ov.win.w.top, vv->ov.win.w.height, vv->ov.win.field, vv->ov_fmt->pixelformat);
657 saa7146_set_output_format(dev, vv->ov_fmt->trans);
658 saa7146_set_clipping_rect(fh);
659
660 /* enable video dma1 */
661 saa7146_write(dev, MC1, (MASK_06 | MASK_22));
662 return 0;
663 }
664
665 void saa7146_disable_overlay(struct saa7146_fh *fh)
666 {
667 struct saa7146_dev *dev = fh->dev;
668
669 /* disable clipping + video dma1 */
670 saa7146_disable_clipping(dev);
671 saa7146_write(dev, MC1, MASK_22);
672 }
673
674 void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma)
675 {
676 int where = 0;
677
678 if( which < 1 || which > 3) {
679 return;
680 }
681
682 /* calculate starting address */
683 where = (which-1)*0x18;
684
685 saa7146_write(dev, where, vdma->base_odd);
686 saa7146_write(dev, where+0x04, vdma->base_even);
687 saa7146_write(dev, where+0x08, vdma->prot_addr);
688 saa7146_write(dev, where+0x0c, vdma->pitch);
689 saa7146_write(dev, where+0x10, vdma->base_page);
690 saa7146_write(dev, where+0x14, vdma->num_line_byte);
691
692 /* upload */
693 saa7146_write(dev, MC2, (MASK_02<<(which-1))|(MASK_18<<(which-1)));
694 /*
695 printk("vdma%d.base_even: 0x%08x\n", which,vdma->base_even);
696 printk("vdma%d.base_odd: 0x%08x\n", which,vdma->base_odd);
697 printk("vdma%d.prot_addr: 0x%08x\n", which,vdma->prot_addr);
698 printk("vdma%d.base_page: 0x%08x\n", which,vdma->base_page);
699 printk("vdma%d.pitch: 0x%08x\n", which,vdma->pitch);
700 printk("vdma%d.num_line_byte: 0x%08x\n", which,vdma->num_line_byte);
701 */
702 }
703
704 static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa7146_buf *buf)
705 {
706 struct saa7146_vv *vv = dev->vv_data;
707 struct saa7146_video_dma vdma1;
708
709 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
710
711 int width = buf->fmt->width;
712 int height = buf->fmt->height;
713 int bytesperline = buf->fmt->bytesperline;
714 enum v4l2_field field = buf->fmt->field;
715
716 int depth = sfmt->depth;
717
718 DEB_CAP("[size=%dx%d,fields=%s]\n",
719 width, height, v4l2_field_names[field]);
720
721 if( bytesperline != 0) {
722 vdma1.pitch = bytesperline*2;
723 } else {
724 vdma1.pitch = (width*depth*2)/8;
725 }
726 vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels);
727 vdma1.base_page = buf->pt[0].dma | ME1 | sfmt->swap;
728
729 if( 0 != vv->vflip ) {
730 vdma1.prot_addr = buf->pt[0].offset;
731 vdma1.base_even = buf->pt[0].offset+(vdma1.pitch/2)*height;
732 vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2);
733 } else {
734 vdma1.base_even = buf->pt[0].offset;
735 vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2);
736 vdma1.prot_addr = buf->pt[0].offset+(vdma1.pitch/2)*height;
737 }
738
739 if (V4L2_FIELD_HAS_BOTH(field)) {
740 } else if (field == V4L2_FIELD_ALTERNATE) {
741 /* fixme */
742 if ( vv->last_field == V4L2_FIELD_TOP ) {
743 vdma1.base_odd = vdma1.prot_addr;
744 vdma1.pitch /= 2;
745 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) {
746 vdma1.base_odd = vdma1.base_even;
747 vdma1.base_even = vdma1.prot_addr;
748 vdma1.pitch /= 2;
749 }
750 } else if (field == V4L2_FIELD_TOP) {
751 vdma1.base_odd = vdma1.prot_addr;
752 vdma1.pitch /= 2;
753 } else if (field == V4L2_FIELD_BOTTOM) {
754 vdma1.base_odd = vdma1.base_even;
755 vdma1.base_even = vdma1.prot_addr;
756 vdma1.pitch /= 2;
757 }
758
759 if( 0 != vv->vflip ) {
760 vdma1.pitch *= -1;
761 }
762
763 saa7146_write_out_dma(dev, 1, &vdma1);
764 return 0;
765 }
766
767 static int calc_planar_422(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3)
768 {
769 int height = buf->fmt->height;
770 int width = buf->fmt->width;
771
772 vdma2->pitch = width;
773 vdma3->pitch = width;
774
775 /* fixme: look at bytesperline! */
776
777 if( 0 != vv->vflip ) {
778 vdma2->prot_addr = buf->pt[1].offset;
779 vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[1].offset;
780 vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2);
781
782 vdma3->prot_addr = buf->pt[2].offset;
783 vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[2].offset;
784 vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2);
785 } else {
786 vdma3->base_even = buf->pt[2].offset;
787 vdma3->base_odd = vdma3->base_even + (vdma3->pitch/2);
788 vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset;
789
790 vdma2->base_even = buf->pt[1].offset;
791 vdma2->base_odd = vdma2->base_even + (vdma2->pitch/2);
792 vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset;
793 }
794
795 return 0;
796 }
797
798 static int calc_planar_420(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3)
799 {
800 int height = buf->fmt->height;
801 int width = buf->fmt->width;
802
803 vdma2->pitch = width/2;
804 vdma3->pitch = width/2;
805
806 if( 0 != vv->vflip ) {
807 vdma2->prot_addr = buf->pt[2].offset;
808 vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[2].offset;
809 vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2);
810
811 vdma3->prot_addr = buf->pt[1].offset;
812 vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[1].offset;
813 vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2);
814
815 } else {
816 vdma3->base_even = buf->pt[2].offset;
817 vdma3->base_odd = vdma3->base_even + (vdma3->pitch);
818 vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset;
819
820 vdma2->base_even = buf->pt[1].offset;
821 vdma2->base_odd = vdma2->base_even + (vdma2->pitch);
822 vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset;
823 }
824 return 0;
825 }
826
827 static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa7146_buf *buf)
828 {
829 struct saa7146_vv *vv = dev->vv_data;
830 struct saa7146_video_dma vdma1;
831 struct saa7146_video_dma vdma2;
832 struct saa7146_video_dma vdma3;
833
834 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
835
836 int width = buf->fmt->width;
837 int height = buf->fmt->height;
838 enum v4l2_field field = buf->fmt->field;
839
840 BUG_ON(0 == buf->pt[0].dma);
841 BUG_ON(0 == buf->pt[1].dma);
842 BUG_ON(0 == buf->pt[2].dma);
843
844 DEB_CAP("[size=%dx%d,fields=%s]\n",
845 width, height, v4l2_field_names[field]);
846
847 /* fixme: look at bytesperline! */
848
849 /* fixme: what happens for user space buffers here?. The offsets are
850 most likely wrong, this version here only works for page-aligned
851 buffers, modifications to the pagetable-functions are necessary...*/
852
853 vdma1.pitch = width*2;
854 vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels);
855 vdma1.base_page = buf->pt[0].dma | ME1;
856
857 if( 0 != vv->vflip ) {
858 vdma1.prot_addr = buf->pt[0].offset;
859 vdma1.base_even = ((vdma1.pitch/2)*height)+buf->pt[0].offset;
860 vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2);
861 } else {
862 vdma1.base_even = buf->pt[0].offset;
863 vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2);
864 vdma1.prot_addr = (vdma1.pitch/2)*height+buf->pt[0].offset;
865 }
866
867 vdma2.num_line_byte = 0; /* unused */
868 vdma2.base_page = buf->pt[1].dma | ME1;
869
870 vdma3.num_line_byte = 0; /* unused */
871 vdma3.base_page = buf->pt[2].dma | ME1;
872
873 switch( sfmt->depth ) {
874 case 12: {
875 calc_planar_420(vv,buf,&vdma2,&vdma3);
876 break;
877 }
878 case 16: {
879 calc_planar_422(vv,buf,&vdma2,&vdma3);
880 break;
881 }
882 default: {
883 return -1;
884 }
885 }
886
887 if (V4L2_FIELD_HAS_BOTH(field)) {
888 } else if (field == V4L2_FIELD_ALTERNATE) {
889 /* fixme */
890 vdma1.base_odd = vdma1.prot_addr;
891 vdma1.pitch /= 2;
892 vdma2.base_odd = vdma2.prot_addr;
893 vdma2.pitch /= 2;
894 vdma3.base_odd = vdma3.prot_addr;
895 vdma3.pitch /= 2;
896 } else if (field == V4L2_FIELD_TOP) {
897 vdma1.base_odd = vdma1.prot_addr;
898 vdma1.pitch /= 2;
899 vdma2.base_odd = vdma2.prot_addr;
900 vdma2.pitch /= 2;
901 vdma3.base_odd = vdma3.prot_addr;
902 vdma3.pitch /= 2;
903 } else if (field == V4L2_FIELD_BOTTOM) {
904 vdma1.base_odd = vdma1.base_even;
905 vdma1.base_even = vdma1.prot_addr;
906 vdma1.pitch /= 2;
907 vdma2.base_odd = vdma2.base_even;
908 vdma2.base_even = vdma2.prot_addr;
909 vdma2.pitch /= 2;
910 vdma3.base_odd = vdma3.base_even;
911 vdma3.base_even = vdma3.prot_addr;
912 vdma3.pitch /= 2;
913 }
914
915 if( 0 != vv->vflip ) {
916 vdma1.pitch *= -1;
917 vdma2.pitch *= -1;
918 vdma3.pitch *= -1;
919 }
920
921 saa7146_write_out_dma(dev, 1, &vdma1);
922 if( (sfmt->flags & FORMAT_BYTE_SWAP) != 0 ) {
923 saa7146_write_out_dma(dev, 3, &vdma2);
924 saa7146_write_out_dma(dev, 2, &vdma3);
925 } else {
926 saa7146_write_out_dma(dev, 2, &vdma2);
927 saa7146_write_out_dma(dev, 3, &vdma3);
928 }
929 return 0;
930 }
931
932 static void program_capture_engine(struct saa7146_dev *dev, int planar)
933 {
934 struct saa7146_vv *vv = dev->vv_data;
935 int count = 0;
936
937 unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B;
938 unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B;
939
940 /* wait for o_fid_a/b / e_fid_a/b toggle only if rps register 0 is not set*/
941 WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | o_wait);
942 WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | e_wait);
943
944 /* set rps register 0 */
945 WRITE_RPS0(CMD_WR_REG | (1 << 8) | (MC2/4));
946 WRITE_RPS0(MASK_27 | MASK_11);
947
948 /* turn on video-dma1 */
949 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
950 WRITE_RPS0(MASK_06 | MASK_22); /* => mask */
951 WRITE_RPS0(MASK_06 | MASK_22); /* => values */
952 if( 0 != planar ) {
953 /* turn on video-dma2 */
954 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
955 WRITE_RPS0(MASK_05 | MASK_21); /* => mask */
956 WRITE_RPS0(MASK_05 | MASK_21); /* => values */
957
958 /* turn on video-dma3 */
959 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
960 WRITE_RPS0(MASK_04 | MASK_20); /* => mask */
961 WRITE_RPS0(MASK_04 | MASK_20); /* => values */
962 }
963
964 /* wait for o_fid_a/b / e_fid_a/b toggle */
965 if ( vv->last_field == V4L2_FIELD_INTERLACED ) {
966 WRITE_RPS0(CMD_PAUSE | o_wait);
967 WRITE_RPS0(CMD_PAUSE | e_wait);
968 } else if ( vv->last_field == V4L2_FIELD_TOP ) {
969 WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09));
970 WRITE_RPS0(CMD_PAUSE | o_wait);
971 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) {
972 WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09));
973 WRITE_RPS0(CMD_PAUSE | e_wait);
974 }
975
976 /* turn off video-dma1 */
977 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
978 WRITE_RPS0(MASK_22 | MASK_06); /* => mask */
979 WRITE_RPS0(MASK_22); /* => values */
980 if( 0 != planar ) {
981 /* turn off video-dma2 */
982 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
983 WRITE_RPS0(MASK_05 | MASK_21); /* => mask */
984 WRITE_RPS0(MASK_21); /* => values */
985
986 /* turn off video-dma3 */
987 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
988 WRITE_RPS0(MASK_04 | MASK_20); /* => mask */
989 WRITE_RPS0(MASK_20); /* => values */
990 }
991
992 /* generate interrupt */
993 WRITE_RPS0(CMD_INTERRUPT);
994
995 /* stop */
996 WRITE_RPS0(CMD_STOP);
997 }
998
999 void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next)
1000 {
1001 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
1002 struct saa7146_vv *vv = dev->vv_data;
1003 u32 vdma1_prot_addr;
1004
1005 DEB_CAP("buf:%p, next:%p\n", buf, next);
1006
1007 vdma1_prot_addr = saa7146_read(dev, PROT_ADDR1);
1008 if( 0 == vdma1_prot_addr ) {
1009 /* clear out beginning of streaming bit (rps register 0)*/
1010 DEB_CAP("forcing sync to new frame\n");
1011 saa7146_write(dev, MC2, MASK_27 );
1012 }
1013
1014 saa7146_set_window(dev, buf->fmt->width, buf->fmt->height, buf->fmt->field);
1015 saa7146_set_output_format(dev, sfmt->trans);
1016 saa7146_disable_clipping(dev);
1017
1018 if ( vv->last_field == V4L2_FIELD_INTERLACED ) {
1019 } else if ( vv->last_field == V4L2_FIELD_TOP ) {
1020 vv->last_field = V4L2_FIELD_BOTTOM;
1021 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) {
1022 vv->last_field = V4L2_FIELD_TOP;
1023 }
1024
1025 if( 0 != IS_PLANAR(sfmt->trans)) {
1026 calculate_video_dma_grab_planar(dev, buf);
1027 program_capture_engine(dev,1);
1028 } else {
1029 calculate_video_dma_grab_packed(dev, buf);
1030 program_capture_engine(dev,0);
1031 }
1032
1033 /*
1034 printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
1035 printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
1036 printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
1037 printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
1038 printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1));
1039 printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
1040 printk("vdma%d => vptr : 0x%08x\n", 1,saa7146_read(dev,PCI_VDP1));
1041 */
1042
1043 /* write the address of the rps-program */
1044 saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
1045
1046 /* turn on rps */
1047 saa7146_write(dev, MC1, (MASK_12 | MASK_28));
1048 }
Linux with added FPC-III support