1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | |
4 | bttv-risc.c -- interfaces to other kernel modules |
5 | |
6 | bttv risc code handling |
7 | - memory management |
8 | - generation |
9 | |
10 | (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> |
11 | |
12 | |
13 | */ |
14 | |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
16 | |
17 | #include <linux/module.h> |
18 | #include <linux/init.h> |
19 | #include <linux/slab.h> |
20 | #include <linux/pci.h> |
21 | #include <linux/vmalloc.h> |
22 | #include <linux/interrupt.h> |
23 | #include <linux/pgtable.h> |
24 | #include <asm/page.h> |
25 | #include <media/v4l2-ioctl.h> |
26 | |
27 | #include "bttvp.h" |
28 | |
29 | #define VCR_HACK_LINES 4 |
30 | |
31 | /* ---------------------------------------------------------- */ |
32 | /* risc code generators */ |
33 | |
34 | int |
35 | bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc, |
36 | struct scatterlist *sglist, |
37 | unsigned int offset, unsigned int bpl, |
38 | unsigned int padding, unsigned int skip_lines, |
39 | unsigned int store_lines) |
40 | { |
41 | u32 instructions,line,todo; |
42 | struct scatterlist *sg; |
43 | __le32 *rp; |
44 | int rc; |
45 | |
46 | /* estimate risc mem: worst case is one write per page border + |
47 | one write per scan line + sync + jump (all 2 dwords). padding |
48 | can cause next bpl to start close to a page border. First DMA |
49 | region may be smaller than PAGE_SIZE */ |
50 | instructions = skip_lines * 4; |
51 | instructions += (1 + ((bpl + padding) * store_lines) |
52 | / PAGE_SIZE + store_lines) * 8; |
53 | instructions += 2 * 8; |
54 | if ((rc = btcx_riscmem_alloc(pci: btv->c.pci,risc,size: instructions)) < 0) |
55 | return rc; |
56 | |
57 | /* sync instruction */ |
58 | rp = risc->cpu; |
59 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); |
60 | *(rp++) = cpu_to_le32(0); |
61 | |
62 | while (skip_lines-- > 0) { |
63 | *(rp++) = cpu_to_le32(BT848_RISC_SKIP | BT848_RISC_SOL | |
64 | BT848_RISC_EOL | bpl); |
65 | } |
66 | |
67 | /* scan lines */ |
68 | sg = sglist; |
69 | for (line = 0; line < store_lines; line++) { |
70 | if ((line >= (store_lines - VCR_HACK_LINES)) && |
71 | btv->opt_vcr_hack) |
72 | continue; |
73 | while (offset && offset >= sg_dma_len(sg)) { |
74 | offset -= sg_dma_len(sg); |
75 | sg = sg_next(sg); |
76 | } |
77 | if (bpl <= sg_dma_len(sg)-offset) { |
78 | /* fits into current chunk */ |
79 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| |
80 | BT848_RISC_EOL|bpl); |
81 | *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); |
82 | offset+=bpl; |
83 | } else { |
84 | /* scanline needs to be split */ |
85 | todo = bpl; |
86 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL| |
87 | (sg_dma_len(sg)-offset)); |
88 | *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); |
89 | todo -= (sg_dma_len(sg)-offset); |
90 | offset = 0; |
91 | sg = sg_next(sg); |
92 | while (todo > sg_dma_len(sg)) { |
93 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE| |
94 | sg_dma_len(sg)); |
95 | *(rp++)=cpu_to_le32(sg_dma_address(sg)); |
96 | todo -= sg_dma_len(sg); |
97 | sg = sg_next(sg); |
98 | } |
99 | *(rp++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL| |
100 | todo); |
101 | *(rp++)=cpu_to_le32(sg_dma_address(sg)); |
102 | offset += todo; |
103 | } |
104 | offset += padding; |
105 | } |
106 | |
107 | /* save pointer to jmp instruction address */ |
108 | risc->jmp = rp; |
109 | WARN_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size); |
110 | return 0; |
111 | } |
112 | |
113 | static int |
114 | bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc, |
115 | struct scatterlist *sglist, |
116 | unsigned int yoffset, unsigned int ybpl, |
117 | unsigned int ypadding, unsigned int ylines, |
118 | unsigned int uoffset, unsigned int voffset, |
119 | unsigned int hshift, unsigned int vshift, |
120 | unsigned int cpadding) |
121 | { |
122 | unsigned int instructions,line,todo,ylen,chroma; |
123 | __le32 *rp; |
124 | u32 ri; |
125 | struct scatterlist *ysg; |
126 | struct scatterlist *usg; |
127 | struct scatterlist *vsg; |
128 | int topfield = (0 == yoffset); |
129 | int rc; |
130 | |
131 | /* estimate risc mem: worst case is one write per page border + |
132 | one write per scan line (5 dwords) |
133 | plus sync + jump (2 dwords) */ |
134 | instructions = ((3 + (ybpl + ypadding) * ylines * 2) |
135 | / PAGE_SIZE) + ylines; |
136 | instructions += 2; |
137 | if ((rc = btcx_riscmem_alloc(pci: btv->c.pci,risc,size: instructions*4*5)) < 0) |
138 | return rc; |
139 | |
140 | /* sync instruction */ |
141 | rp = risc->cpu; |
142 | *(rp++) = cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3); |
143 | *(rp++) = cpu_to_le32(0); |
144 | |
145 | /* scan lines */ |
146 | ysg = sglist; |
147 | usg = sglist; |
148 | vsg = sglist; |
149 | for (line = 0; line < ylines; line++) { |
150 | if ((btv->opt_vcr_hack) && |
151 | (line >= (ylines - VCR_HACK_LINES))) |
152 | continue; |
153 | switch (vshift) { |
154 | case 0: |
155 | chroma = 1; |
156 | break; |
157 | case 1: |
158 | if (topfield) |
159 | chroma = ((line & 1) == 0); |
160 | else |
161 | chroma = ((line & 1) == 1); |
162 | break; |
163 | case 2: |
164 | if (topfield) |
165 | chroma = ((line & 3) == 0); |
166 | else |
167 | chroma = ((line & 3) == 2); |
168 | break; |
169 | default: |
170 | chroma = 0; |
171 | break; |
172 | } |
173 | |
174 | for (todo = ybpl; todo > 0; todo -= ylen) { |
175 | /* go to next sg entry if needed */ |
176 | while (yoffset && yoffset >= sg_dma_len(ysg)) { |
177 | yoffset -= sg_dma_len(ysg); |
178 | ysg = sg_next(ysg); |
179 | } |
180 | |
181 | /* calculate max number of bytes we can write */ |
182 | ylen = todo; |
183 | if (yoffset + ylen > sg_dma_len(ysg)) |
184 | ylen = sg_dma_len(ysg) - yoffset; |
185 | if (chroma) { |
186 | while (uoffset && uoffset >= sg_dma_len(usg)) { |
187 | uoffset -= sg_dma_len(usg); |
188 | usg = sg_next(usg); |
189 | } |
190 | while (voffset && voffset >= sg_dma_len(vsg)) { |
191 | voffset -= sg_dma_len(vsg); |
192 | vsg = sg_next(vsg); |
193 | } |
194 | |
195 | if (uoffset + (ylen>>hshift) > sg_dma_len(usg)) |
196 | ylen = (sg_dma_len(usg) - uoffset) << hshift; |
197 | if (voffset + (ylen>>hshift) > sg_dma_len(vsg)) |
198 | ylen = (sg_dma_len(vsg) - voffset) << hshift; |
199 | ri = BT848_RISC_WRITE123; |
200 | } else { |
201 | ri = BT848_RISC_WRITE1S23; |
202 | } |
203 | if (ybpl == todo) |
204 | ri |= BT848_RISC_SOL; |
205 | if (ylen == todo) |
206 | ri |= BT848_RISC_EOL; |
207 | |
208 | /* write risc instruction */ |
209 | *(rp++)=cpu_to_le32(ri | ylen); |
210 | *(rp++)=cpu_to_le32(((ylen >> hshift) << 16) | |
211 | (ylen >> hshift)); |
212 | *(rp++)=cpu_to_le32(sg_dma_address(ysg)+yoffset); |
213 | yoffset += ylen; |
214 | if (chroma) { |
215 | *(rp++)=cpu_to_le32(sg_dma_address(usg)+uoffset); |
216 | uoffset += ylen >> hshift; |
217 | *(rp++)=cpu_to_le32(sg_dma_address(vsg)+voffset); |
218 | voffset += ylen >> hshift; |
219 | } |
220 | } |
221 | yoffset += ypadding; |
222 | if (chroma) { |
223 | uoffset += cpadding; |
224 | voffset += cpadding; |
225 | } |
226 | } |
227 | |
228 | /* save pointer to jmp instruction address */ |
229 | risc->jmp = rp; |
230 | WARN_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size); |
231 | return 0; |
232 | } |
233 | |
234 | /* ---------------------------------------------------------- */ |
235 | |
236 | static void |
237 | bttv_calc_geo_old(struct bttv *btv, struct bttv_geometry *geo, |
238 | int width, int height, int interleaved, |
239 | const struct bttv_tvnorm *tvnorm) |
240 | { |
241 | u32 xsf, sr; |
242 | int vdelay; |
243 | |
244 | int swidth = tvnorm->swidth; |
245 | int totalwidth = tvnorm->totalwidth; |
246 | int scaledtwidth = tvnorm->scaledtwidth; |
247 | |
248 | if (btv->input == btv->dig) { |
249 | swidth = 720; |
250 | totalwidth = 858; |
251 | scaledtwidth = 858; |
252 | } |
253 | |
254 | vdelay = tvnorm->vdelay; |
255 | |
256 | xsf = (width*scaledtwidth)/swidth; |
257 | geo->hscale = ((totalwidth*4096UL)/xsf-4096); |
258 | geo->hdelay = tvnorm->hdelayx1; |
259 | geo->hdelay = (geo->hdelay*width)/swidth; |
260 | geo->hdelay &= 0x3fe; |
261 | sr = ((tvnorm->sheight >> (interleaved?0:1))*512)/height - 512; |
262 | geo->vscale = (0x10000UL-sr) & 0x1fff; |
263 | geo->crop = ((width>>8)&0x03) | ((geo->hdelay>>6)&0x0c) | |
264 | ((tvnorm->sheight>>4)&0x30) | ((vdelay>>2)&0xc0); |
265 | geo->vscale |= interleaved ? (BT848_VSCALE_INT<<8) : 0; |
266 | geo->vdelay = vdelay; |
267 | geo->width = width; |
268 | geo->sheight = tvnorm->sheight; |
269 | geo->vtotal = tvnorm->vtotal; |
270 | |
271 | if (btv->opt_combfilter) { |
272 | geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0); |
273 | geo->comb = (width < 769) ? 1 : 0; |
274 | } else { |
275 | geo->vtc = 0; |
276 | geo->comb = 0; |
277 | } |
278 | } |
279 | |
280 | static void |
281 | bttv_calc_geo (struct bttv * btv, |
282 | struct bttv_geometry * geo, |
283 | unsigned int width, |
284 | unsigned int height, |
285 | int both_fields, |
286 | const struct bttv_tvnorm * tvnorm, |
287 | const struct v4l2_rect * crop) |
288 | { |
289 | unsigned int c_width; |
290 | unsigned int c_height; |
291 | u32 sr; |
292 | |
293 | if ((crop->left == tvnorm->cropcap.defrect.left |
294 | && crop->top == tvnorm->cropcap.defrect.top |
295 | && crop->width == tvnorm->cropcap.defrect.width |
296 | && crop->height == tvnorm->cropcap.defrect.height |
297 | && width <= tvnorm->swidth /* see PAL-Nc et al */) |
298 | || btv->input == btv->dig) { |
299 | bttv_calc_geo_old(btv, geo, width, height, |
300 | interleaved: both_fields, tvnorm); |
301 | return; |
302 | } |
303 | |
304 | /* For bug compatibility the image size checks permit scale |
305 | factors > 16. See bttv_crop_calc_limits(). */ |
306 | c_width = min((unsigned int) crop->width, width * 16); |
307 | c_height = min((unsigned int) crop->height, height * 16); |
308 | |
309 | geo->width = width; |
310 | geo->hscale = (c_width * 4096U + (width >> 1)) / width - 4096; |
311 | /* Even to store Cb first, odd for Cr. */ |
312 | geo->hdelay = ((crop->left * width + c_width) / c_width) & ~1; |
313 | |
314 | geo->sheight = c_height; |
315 | geo->vdelay = crop->top - tvnorm->cropcap.bounds.top + MIN_VDELAY; |
316 | sr = c_height >> !both_fields; |
317 | sr = (sr * 512U + (height >> 1)) / height - 512; |
318 | geo->vscale = (0x10000UL - sr) & 0x1fff; |
319 | geo->vscale |= both_fields ? (BT848_VSCALE_INT << 8) : 0; |
320 | geo->vtotal = tvnorm->vtotal; |
321 | |
322 | geo->crop = (((geo->width >> 8) & 0x03) | |
323 | ((geo->hdelay >> 6) & 0x0c) | |
324 | ((geo->sheight >> 4) & 0x30) | |
325 | ((geo->vdelay >> 2) & 0xc0)); |
326 | |
327 | if (btv->opt_combfilter) { |
328 | geo->vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0); |
329 | geo->comb = (width < 769) ? 1 : 0; |
330 | } else { |
331 | geo->vtc = 0; |
332 | geo->comb = 0; |
333 | } |
334 | } |
335 | |
336 | static void |
337 | bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int odd) |
338 | { |
339 | int off = odd ? 0x80 : 0x00; |
340 | |
341 | if (geo->comb) |
342 | btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); |
343 | else |
344 | btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off); |
345 | |
346 | btwrite(geo->vtc, BT848_E_VTC+off); |
347 | btwrite(geo->hscale >> 8, BT848_E_HSCALE_HI+off); |
348 | btwrite(geo->hscale & 0xff, BT848_E_HSCALE_LO+off); |
349 | btaor((geo->vscale>>8), 0xe0, BT848_E_VSCALE_HI+off); |
350 | btwrite(geo->vscale & 0xff, BT848_E_VSCALE_LO+off); |
351 | btwrite(geo->width & 0xff, BT848_E_HACTIVE_LO+off); |
352 | btwrite(geo->hdelay & 0xff, BT848_E_HDELAY_LO+off); |
353 | btwrite(geo->sheight & 0xff, BT848_E_VACTIVE_LO+off); |
354 | btwrite(geo->vdelay & 0xff, BT848_E_VDELAY_LO+off); |
355 | btwrite(geo->crop, BT848_E_CROP+off); |
356 | btwrite(geo->vtotal>>8, BT848_VTOTAL_HI); |
357 | btwrite(geo->vtotal & 0xff, BT848_VTOTAL_LO); |
358 | } |
359 | |
360 | /* ---------------------------------------------------------- */ |
361 | /* risc group / risc main loop / dma management */ |
362 | |
363 | static void bttv_set_risc_status(struct bttv *btv) |
364 | { |
365 | unsigned long cmd = BT848_RISC_JUMP; |
366 | if (btv->loop_irq) { |
367 | cmd |= BT848_RISC_IRQ; |
368 | cmd |= (btv->loop_irq & 0x0f) << 16; |
369 | cmd |= (~btv->loop_irq & 0x0f) << 20; |
370 | } |
371 | btv->main.cpu[RISC_SLOT_LOOP] = cpu_to_le32(cmd); |
372 | } |
373 | |
374 | static void bttv_set_irq_timer(struct bttv *btv) |
375 | { |
376 | if (btv->curr.frame_irq || btv->loop_irq || btv->cvbi) |
377 | mod_timer(timer: &btv->timeout, expires: jiffies + BTTV_TIMEOUT); |
378 | else |
379 | del_timer(timer: &btv->timeout); |
380 | } |
381 | |
382 | static int bttv_set_capture_control(struct bttv *btv, int start_capture) |
383 | { |
384 | int capctl = 0; |
385 | |
386 | if (btv->curr.top || btv->curr.bottom) |
387 | capctl = BT848_CAP_CTL_CAPTURE_ODD | |
388 | BT848_CAP_CTL_CAPTURE_EVEN; |
389 | |
390 | if (btv->cvbi) |
391 | capctl |= BT848_CAP_CTL_CAPTURE_VBI_ODD | |
392 | BT848_CAP_CTL_CAPTURE_VBI_EVEN; |
393 | |
394 | capctl |= start_capture; |
395 | |
396 | btaor(capctl, ~0x0f, BT848_CAP_CTL); |
397 | |
398 | return capctl; |
399 | } |
400 | |
401 | static void bttv_start_dma(struct bttv *btv) |
402 | { |
403 | if (btv->dma_on) |
404 | return; |
405 | btwrite(btv->main.dma, BT848_RISC_STRT_ADD); |
406 | btor(BT848_GPIO_DMA_CTL_RISC_ENABLE | BT848_GPIO_DMA_CTL_FIFO_ENABLE, |
407 | BT848_GPIO_DMA_CTL); |
408 | btv->dma_on = 1; |
409 | } |
410 | |
411 | static void bttv_stop_dma(struct bttv *btv) |
412 | { |
413 | if (!btv->dma_on) |
414 | return; |
415 | btand(~(BT848_GPIO_DMA_CTL_RISC_ENABLE | |
416 | BT848_GPIO_DMA_CTL_FIFO_ENABLE), BT848_GPIO_DMA_CTL); |
417 | btv->dma_on = 0; |
418 | } |
419 | |
420 | void bttv_set_dma(struct bttv *btv, int start_capture) |
421 | { |
422 | int capctl = 0; |
423 | |
424 | bttv_set_risc_status(btv); |
425 | bttv_set_irq_timer(btv); |
426 | capctl = bttv_set_capture_control(btv, start_capture); |
427 | |
428 | if (capctl) |
429 | bttv_start_dma(btv); |
430 | else |
431 | bttv_stop_dma(btv); |
432 | |
433 | d2printk("%d: capctl=%x lirq=%d top=%08llx/%08llx even=%08llx/%08llx\n" , |
434 | btv->c.nr,capctl,btv->loop_irq, |
435 | btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0, |
436 | btv->curr.top ? (unsigned long long)btv->curr.top->top.dma : 0, |
437 | btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0, |
438 | btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0); |
439 | } |
440 | |
441 | int |
442 | bttv_risc_init_main(struct bttv *btv) |
443 | { |
444 | int rc; |
445 | |
446 | if ((rc = btcx_riscmem_alloc(pci: btv->c.pci,risc: &btv->main,PAGE_SIZE)) < 0) |
447 | return rc; |
448 | dprintk("%d: risc main @ %08llx\n" , |
449 | btv->c.nr, (unsigned long long)btv->main.dma); |
450 | |
451 | btv->main.cpu[0] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC | |
452 | BT848_FIFO_STATUS_VRE); |
453 | btv->main.cpu[1] = cpu_to_le32(0); |
454 | btv->main.cpu[2] = cpu_to_le32(BT848_RISC_JUMP); |
455 | btv->main.cpu[3] = cpu_to_le32(btv->main.dma + (4<<2)); |
456 | |
457 | /* top field */ |
458 | btv->main.cpu[4] = cpu_to_le32(BT848_RISC_JUMP); |
459 | btv->main.cpu[5] = cpu_to_le32(btv->main.dma + (6<<2)); |
460 | btv->main.cpu[6] = cpu_to_le32(BT848_RISC_JUMP); |
461 | btv->main.cpu[7] = cpu_to_le32(btv->main.dma + (8<<2)); |
462 | |
463 | btv->main.cpu[8] = cpu_to_le32(BT848_RISC_SYNC | BT848_RISC_RESYNC | |
464 | BT848_FIFO_STATUS_VRO); |
465 | btv->main.cpu[9] = cpu_to_le32(0); |
466 | |
467 | /* bottom field */ |
468 | btv->main.cpu[10] = cpu_to_le32(BT848_RISC_JUMP); |
469 | btv->main.cpu[11] = cpu_to_le32(btv->main.dma + (12<<2)); |
470 | btv->main.cpu[12] = cpu_to_le32(BT848_RISC_JUMP); |
471 | btv->main.cpu[13] = cpu_to_le32(btv->main.dma + (14<<2)); |
472 | |
473 | /* jump back to top field */ |
474 | btv->main.cpu[14] = cpu_to_le32(BT848_RISC_JUMP); |
475 | btv->main.cpu[15] = cpu_to_le32(btv->main.dma + (0<<2)); |
476 | |
477 | return 0; |
478 | } |
479 | |
480 | int |
481 | bttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc, |
482 | int irqflags) |
483 | { |
484 | unsigned long cmd; |
485 | unsigned long next = btv->main.dma + ((slot+2) << 2); |
486 | |
487 | if (NULL == risc) { |
488 | d2printk("%d: risc=%p slot[%d]=NULL\n" , btv->c.nr, risc, slot); |
489 | btv->main.cpu[slot+1] = cpu_to_le32(next); |
490 | } else { |
491 | d2printk("%d: risc=%p slot[%d]=%08llx irq=%d\n" , |
492 | btv->c.nr, risc, slot, |
493 | (unsigned long long)risc->dma, irqflags); |
494 | cmd = BT848_RISC_JUMP; |
495 | if (irqflags) { |
496 | cmd |= BT848_RISC_IRQ; |
497 | cmd |= (irqflags & 0x0f) << 16; |
498 | cmd |= (~irqflags & 0x0f) << 20; |
499 | } |
500 | risc->jmp[0] = cpu_to_le32(cmd); |
501 | risc->jmp[1] = cpu_to_le32(next); |
502 | btv->main.cpu[slot+1] = cpu_to_le32(risc->dma); |
503 | } |
504 | return 0; |
505 | } |
506 | |
507 | int bttv_buffer_risc_vbi(struct bttv *btv, struct bttv_buffer *buf) |
508 | { |
509 | int r = 0; |
510 | unsigned int offset; |
511 | unsigned int bpl = 2044; /* max. vbipack */ |
512 | unsigned int padding = VBI_BPL - bpl; |
513 | unsigned int skip_lines0 = 0; |
514 | unsigned int skip_lines1 = 0; |
515 | unsigned int min_vdelay = MIN_VDELAY; |
516 | |
517 | const struct bttv_tvnorm *tvnorm = btv->vbi_fmt.tvnorm; |
518 | struct sg_table *sgt = vb2_dma_sg_plane_desc(vb: &buf->vbuf.vb2_buf, plane_no: 0); |
519 | struct scatterlist *list = sgt->sgl; |
520 | |
521 | if (btv->vbi_fmt.fmt.count[0] > 0) |
522 | skip_lines0 = max(0, (btv->vbi_fmt.fmt.start[0] - |
523 | tvnorm->vbistart[0])); |
524 | if (btv->vbi_fmt.fmt.count[1] > 0) |
525 | skip_lines1 = max(0, (btv->vbi_fmt.fmt.start[1] - |
526 | tvnorm->vbistart[1])); |
527 | |
528 | if (btv->vbi_fmt.fmt.count[0] > 0) { |
529 | r = bttv_risc_packed(btv, risc: &buf->top, sglist: list, offset: 0, bpl, padding, |
530 | skip_lines: skip_lines0, store_lines: btv->vbi_fmt.fmt.count[0]); |
531 | if (r) |
532 | return r; |
533 | } |
534 | |
535 | if (btv->vbi_fmt.fmt.count[1] > 0) { |
536 | offset = btv->vbi_fmt.fmt.count[0] * VBI_BPL; |
537 | r = bttv_risc_packed(btv, risc: &buf->bottom, sglist: list, offset, bpl, |
538 | padding, skip_lines: skip_lines1, |
539 | store_lines: btv->vbi_fmt.fmt.count[1]); |
540 | if (r) |
541 | return r; |
542 | } |
543 | |
544 | if (btv->vbi_fmt.end >= tvnorm->cropcap.bounds.top) |
545 | min_vdelay += btv->vbi_fmt.end - tvnorm->cropcap.bounds.top; |
546 | |
547 | /* For bttv_buffer_activate_vbi(). */ |
548 | buf->geo.vdelay = min_vdelay; |
549 | |
550 | return r; |
551 | } |
552 | |
553 | int |
554 | bttv_buffer_activate_vbi(struct bttv *btv, |
555 | struct bttv_buffer *vbi) |
556 | { |
557 | struct btcx_riscmem *top; |
558 | struct btcx_riscmem *bottom; |
559 | int top_irq_flags; |
560 | int bottom_irq_flags; |
561 | |
562 | top = NULL; |
563 | bottom = NULL; |
564 | top_irq_flags = 0; |
565 | bottom_irq_flags = 0; |
566 | |
567 | if (vbi) { |
568 | unsigned int crop, vdelay; |
569 | |
570 | list_del(entry: &vbi->list); |
571 | |
572 | /* VDELAY is start of video, end of VBI capturing. */ |
573 | crop = btread(BT848_E_CROP); |
574 | vdelay = btread(BT848_E_VDELAY_LO) + ((crop & 0xc0) << 2); |
575 | |
576 | if (vbi->geo.vdelay > vdelay) { |
577 | vdelay = vbi->geo.vdelay & 0xfe; |
578 | crop = (crop & 0x3f) | ((vbi->geo.vdelay >> 2) & 0xc0); |
579 | |
580 | btwrite(vdelay, BT848_E_VDELAY_LO); |
581 | btwrite(crop, BT848_E_CROP); |
582 | btwrite(vdelay, BT848_O_VDELAY_LO); |
583 | btwrite(crop, BT848_O_CROP); |
584 | } |
585 | |
586 | if (btv->vbi_count[0] > 0) { |
587 | top = &vbi->top; |
588 | top_irq_flags = 4; |
589 | } |
590 | |
591 | if (btv->vbi_count[1] > 0) { |
592 | top_irq_flags = 0; |
593 | bottom = &vbi->bottom; |
594 | bottom_irq_flags = 4; |
595 | } |
596 | } |
597 | |
598 | bttv_risc_hook(btv, RISC_SLOT_O_VBI, risc: top, irqflags: top_irq_flags); |
599 | bttv_risc_hook(btv, RISC_SLOT_E_VBI, risc: bottom, irqflags: bottom_irq_flags); |
600 | |
601 | return 0; |
602 | } |
603 | |
604 | int |
605 | bttv_buffer_activate_video(struct bttv *btv, |
606 | struct bttv_buffer_set *set) |
607 | { |
608 | /* video capture */ |
609 | if (NULL != set->top && NULL != set->bottom) { |
610 | if (set->top == set->bottom) { |
611 | if (set->top->list.next) |
612 | list_del(entry: &set->top->list); |
613 | } else { |
614 | if (set->top->list.next) |
615 | list_del(entry: &set->top->list); |
616 | if (set->bottom->list.next) |
617 | list_del(entry: &set->bottom->list); |
618 | } |
619 | bttv_apply_geo(btv, geo: &set->top->geo, odd: 1); |
620 | bttv_apply_geo(btv, geo: &set->bottom->geo,odd: 0); |
621 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, risc: &set->top->top, |
622 | irqflags: set->top_irq); |
623 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, risc: &set->bottom->bottom, |
624 | irqflags: set->frame_irq); |
625 | btaor((set->top->btformat & 0xf0) | (set->bottom->btformat & 0x0f), |
626 | ~0xff, BT848_COLOR_FMT); |
627 | btaor((set->top->btswap & 0x0a) | (set->bottom->btswap & 0x05), |
628 | ~0x0f, BT848_COLOR_CTL); |
629 | } else if (NULL != set->top) { |
630 | if (set->top->list.next) |
631 | list_del(entry: &set->top->list); |
632 | bttv_apply_geo(btv, geo: &set->top->geo,odd: 1); |
633 | bttv_apply_geo(btv, geo: &set->top->geo,odd: 0); |
634 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, risc: &set->top->top, |
635 | irqflags: set->frame_irq); |
636 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, irqflags: 0); |
637 | btaor(set->top->btformat & 0xff, ~0xff, BT848_COLOR_FMT); |
638 | btaor(set->top->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL); |
639 | } else if (NULL != set->bottom) { |
640 | if (set->bottom->list.next) |
641 | list_del(entry: &set->bottom->list); |
642 | bttv_apply_geo(btv, geo: &set->bottom->geo,odd: 1); |
643 | bttv_apply_geo(btv, geo: &set->bottom->geo,odd: 0); |
644 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, irqflags: 0); |
645 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, risc: &set->bottom->bottom, |
646 | irqflags: set->frame_irq); |
647 | btaor(set->bottom->btformat & 0xff, ~0xff, BT848_COLOR_FMT); |
648 | btaor(set->bottom->btswap & 0x0f, ~0x0f, BT848_COLOR_CTL); |
649 | } else { |
650 | bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, irqflags: 0); |
651 | bttv_risc_hook(btv, RISC_SLOT_E_FIELD, NULL, irqflags: 0); |
652 | } |
653 | return 0; |
654 | } |
655 | |
656 | /* ---------------------------------------------------------- */ |
657 | |
658 | /* calculate geometry, build risc code */ |
659 | int |
660 | bttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf) |
661 | { |
662 | int r = 0; |
663 | const struct bttv_tvnorm *tvnorm = bttv_tvnorms + btv->tvnorm; |
664 | struct sg_table *sgt = vb2_dma_sg_plane_desc(vb: &buf->vbuf.vb2_buf, plane_no: 0); |
665 | struct scatterlist *list = sgt->sgl; |
666 | unsigned long size = (btv->fmt->depth * btv->width * btv->height) >> 3; |
667 | |
668 | /* packed pixel modes */ |
669 | if (btv->fmt->flags & FORMAT_FLAGS_PACKED) { |
670 | int bpl = (btv->fmt->depth >> 3) * btv->width; |
671 | int bpf = bpl * (btv->height >> 1); |
672 | |
673 | bttv_calc_geo(btv, geo: &buf->geo, width: btv->width, height: btv->height, |
674 | V4L2_FIELD_HAS_BOTH(buf->vbuf.field), tvnorm, |
675 | crop: &btv->crop[!!btv->do_crop].rect); |
676 | switch (buf->vbuf.field) { |
677 | case V4L2_FIELD_TOP: |
678 | r = bttv_risc_packed(btv, risc: &buf->top, sglist: list, offset: 0, bpl, padding: 0, |
679 | skip_lines: 0, store_lines: btv->height); |
680 | break; |
681 | case V4L2_FIELD_BOTTOM: |
682 | r = bttv_risc_packed(btv, risc: &buf->bottom, sglist: list, offset: 0, bpl, |
683 | padding: 0, skip_lines: 0, store_lines: btv->height); |
684 | break; |
685 | case V4L2_FIELD_INTERLACED: |
686 | r = bttv_risc_packed(btv, risc: &buf->top, sglist: list, offset: 0, bpl, |
687 | padding: bpl, skip_lines: 0, store_lines: btv->height >> 1); |
688 | r = bttv_risc_packed(btv, risc: &buf->bottom, sglist: list, offset: bpl, |
689 | bpl, padding: bpl, skip_lines: 0, store_lines: btv->height >> 1); |
690 | break; |
691 | case V4L2_FIELD_SEQ_TB: |
692 | r = bttv_risc_packed(btv, risc: &buf->top, sglist: list, offset: 0, bpl, padding: 0, |
693 | skip_lines: 0, store_lines: btv->height >> 1); |
694 | r = bttv_risc_packed(btv, risc: &buf->bottom, sglist: list, offset: bpf, |
695 | bpl, padding: 0, skip_lines: 0, store_lines: btv->height >> 1); |
696 | break; |
697 | default: |
698 | WARN_ON(1); |
699 | return -EINVAL; |
700 | } |
701 | } |
702 | /* planar modes */ |
703 | if (btv->fmt->flags & FORMAT_FLAGS_PLANAR) { |
704 | int uoffset, voffset; |
705 | int ypadding, cpadding, lines; |
706 | |
707 | /* calculate chroma offsets */ |
708 | uoffset = btv->width * btv->height; |
709 | voffset = btv->width * btv->height; |
710 | if (btv->fmt->flags & FORMAT_FLAGS_CrCb) { |
711 | /* Y-Cr-Cb plane order */ |
712 | uoffset >>= btv->fmt->hshift; |
713 | uoffset >>= btv->fmt->vshift; |
714 | uoffset += voffset; |
715 | } else { |
716 | /* Y-Cb-Cr plane order */ |
717 | voffset >>= btv->fmt->hshift; |
718 | voffset >>= btv->fmt->vshift; |
719 | voffset += uoffset; |
720 | } |
721 | switch (buf->vbuf.field) { |
722 | case V4L2_FIELD_TOP: |
723 | bttv_calc_geo(btv, geo: &buf->geo, width: btv->width, height: btv->height, |
724 | both_fields: 0, tvnorm, |
725 | crop: &btv->crop[!!btv->do_crop].rect); |
726 | r = bttv_risc_planar(btv, risc: &buf->top, sglist: list, yoffset: 0, |
727 | ybpl: btv->width, ypadding: 0, ylines: btv->height, |
728 | uoffset, voffset, |
729 | hshift: btv->fmt->hshift, |
730 | vshift: btv->fmt->vshift, cpadding: 0); |
731 | break; |
732 | case V4L2_FIELD_BOTTOM: |
733 | bttv_calc_geo(btv, geo: &buf->geo, width: btv->width, height: btv->height, |
734 | both_fields: 0, tvnorm, |
735 | crop: &btv->crop[!!btv->do_crop].rect); |
736 | r = bttv_risc_planar(btv, risc: &buf->bottom, sglist: list, yoffset: 0, |
737 | ybpl: btv->width, ypadding: 0, ylines: btv->height, |
738 | uoffset, voffset, |
739 | hshift: btv->fmt->hshift, |
740 | vshift: btv->fmt->vshift, cpadding: 0); |
741 | break; |
742 | case V4L2_FIELD_INTERLACED: |
743 | bttv_calc_geo(btv, geo: &buf->geo, width: btv->width, height: btv->height, |
744 | both_fields: 1, tvnorm, |
745 | crop: &btv->crop[!!btv->do_crop].rect); |
746 | lines = btv->height >> 1; |
747 | ypadding = btv->width; |
748 | cpadding = btv->width >> btv->fmt->hshift; |
749 | r = bttv_risc_planar(btv, risc: &buf->top, sglist: list, yoffset: 0, |
750 | ybpl: btv->width, ypadding, ylines: lines, |
751 | uoffset, voffset, |
752 | hshift: btv->fmt->hshift, |
753 | vshift: btv->fmt->vshift, cpadding); |
754 | |
755 | r = bttv_risc_planar(btv, risc: &buf->bottom, sglist: list, |
756 | yoffset: ypadding, ybpl: btv->width, ypadding, |
757 | ylines: lines, uoffset: uoffset + cpadding, |
758 | voffset: voffset + cpadding, |
759 | hshift: btv->fmt->hshift, |
760 | vshift: btv->fmt->vshift, cpadding); |
761 | break; |
762 | case V4L2_FIELD_SEQ_TB: |
763 | bttv_calc_geo(btv, geo: &buf->geo, width: btv->width, height: btv->height, |
764 | both_fields: 1, tvnorm, |
765 | crop: &btv->crop[!!btv->do_crop].rect); |
766 | lines = btv->height >> 1; |
767 | ypadding = btv->width; |
768 | cpadding = btv->width >> btv->fmt->hshift; |
769 | r = bttv_risc_planar(btv, risc: &buf->top, sglist: list, yoffset: 0, |
770 | ybpl: btv->width, ypadding: 0, ylines: lines, |
771 | uoffset: uoffset >> 1, voffset: voffset >> 1, |
772 | hshift: btv->fmt->hshift, |
773 | vshift: btv->fmt->vshift, cpadding: 0); |
774 | r = bttv_risc_planar(btv, risc: &buf->bottom, sglist: list, |
775 | yoffset: lines * ypadding, |
776 | ybpl: btv->width, ypadding: 0, ylines: lines, |
777 | uoffset: lines * ypadding + (uoffset >> 1), |
778 | voffset: lines * ypadding + (voffset >> 1), |
779 | hshift: btv->fmt->hshift, |
780 | vshift: btv->fmt->vshift, cpadding: 0); |
781 | break; |
782 | default: |
783 | WARN_ON(1); |
784 | return -EINVAL; |
785 | } |
786 | } |
787 | /* raw data */ |
788 | if (btv->fmt->flags & FORMAT_FLAGS_RAW) { |
789 | /* build risc code */ |
790 | buf->vbuf.field = V4L2_FIELD_SEQ_TB; |
791 | bttv_calc_geo(btv, geo: &buf->geo, width: tvnorm->swidth, height: tvnorm->sheight, |
792 | both_fields: 1, tvnorm, crop: &btv->crop[!!btv->do_crop].rect); |
793 | r = bttv_risc_packed(btv, risc: &buf->top, sglist: list, offset: 0, RAW_BPL, padding: 0, skip_lines: 0, |
794 | RAW_LINES); |
795 | r = bttv_risc_packed(btv, risc: &buf->bottom, sglist: list, offset: size / 2, |
796 | RAW_BPL, padding: 0, skip_lines: 0, RAW_LINES); |
797 | } |
798 | |
799 | /* copy format info */ |
800 | buf->btformat = btv->fmt->btformat; |
801 | buf->btswap = btv->fmt->btswap; |
802 | |
803 | return r; |
804 | } |
805 | |