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V4L/DVB (6715): ivtv: Remove unnecessary register update
[linux-2.6/verdex.git] / drivers / media / video / cx88 / cx88-core.c
blob01e2ac98970b3d14310bbf52660f85271ef1326b
1 /*
2 *
3 * device driver for Conexant 2388x based TV cards
4 * driver core
5 *
6 * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7 *
8 * (c) 2005-2006 Mauro Carvalho Chehab <mchehab@infradead.org>
9 * - Multituner support
10 * - video_ioctl2 conversion
11 * - PAL/M fixes
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/kmod.h>
34 #include <linux/sound.h>
35 #include <linux/interrupt.h>
36 #include <linux/pci.h>
37 #include <linux/delay.h>
38 #include <linux/videodev2.h>
39 #include <linux/mutex.h>
40
41 #include "cx88.h"
42 #include <media/v4l2-common.h>
43
44 MODULE_DESCRIPTION("v4l2 driver module for cx2388x based TV cards");
45 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
46 MODULE_LICENSE("GPL");
47
48 /* ------------------------------------------------------------------ */
49
50 static unsigned int core_debug = 0;
51 module_param(core_debug,int,0644);
52 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
53
54 static unsigned int nicam = 0;
55 module_param(nicam,int,0644);
56 MODULE_PARM_DESC(nicam,"tv audio is nicam");
57
58 static unsigned int nocomb = 0;
59 module_param(nocomb,int,0644);
60 MODULE_PARM_DESC(nocomb,"disable comb filter");
61
62 #define dprintk(level,fmt, arg...) if (core_debug >= level) \
63 printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
64
65 static unsigned int cx88_devcount;
66 static LIST_HEAD(cx88_devlist);
67 static DEFINE_MUTEX(devlist);
68
69 #define NO_SYNC_LINE (-1U)
70
71 /* @lpi: lines per IRQ, or 0 to not generate irqs. Note: IRQ to be
72 generated _after_ lpi lines are transferred. */
73 static u32* cx88_risc_field(u32 *rp, struct scatterlist *sglist,
74 unsigned int offset, u32 sync_line,
75 unsigned int bpl, unsigned int padding,
76 unsigned int lines, unsigned int lpi)
77 {
78 struct scatterlist *sg;
79 unsigned int line,todo,sol;
80
81 /* sync instruction */
82 if (sync_line != NO_SYNC_LINE)
83 *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
84
85 /* scan lines */
86 sg = sglist;
87 for (line = 0; line < lines; line++) {
88 while (offset && offset >= sg_dma_len(sg)) {
89 offset -= sg_dma_len(sg);
90 sg++;
91 }
92 if (lpi && line>0 && !(line % lpi))
93 sol = RISC_SOL | RISC_IRQ1 | RISC_CNT_INC;
94 else
95 sol = RISC_SOL;
96 if (bpl <= sg_dma_len(sg)-offset) {
97 /* fits into current chunk */
98 *(rp++)=cpu_to_le32(RISC_WRITE|sol|RISC_EOL|bpl);
99 *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
100 offset+=bpl;
101 } else {
102 /* scanline needs to be split */
103 todo = bpl;
104 *(rp++)=cpu_to_le32(RISC_WRITE|sol|
105 (sg_dma_len(sg)-offset));
106 *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
107 todo -= (sg_dma_len(sg)-offset);
108 offset = 0;
109 sg++;
110 while (todo > sg_dma_len(sg)) {
111 *(rp++)=cpu_to_le32(RISC_WRITE|
112 sg_dma_len(sg));
113 *(rp++)=cpu_to_le32(sg_dma_address(sg));
114 todo -= sg_dma_len(sg);
115 sg++;
116 }
117 *(rp++)=cpu_to_le32(RISC_WRITE|RISC_EOL|todo);
118 *(rp++)=cpu_to_le32(sg_dma_address(sg));
119 offset += todo;
120 }
121 offset += padding;
122 }
123
124 return rp;
125 }
126
127 int cx88_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
128 struct scatterlist *sglist,
129 unsigned int top_offset, unsigned int bottom_offset,
130 unsigned int bpl, unsigned int padding, unsigned int lines)
131 {
132 u32 instructions,fields;
133 u32 *rp;
134 int rc;
135
136 fields = 0;
137 if (UNSET != top_offset)
138 fields++;
139 if (UNSET != bottom_offset)
140 fields++;
141
142 /* estimate risc mem: worst case is one write per page border +
143 one write per scan line + syncs + jump (all 2 dwords). Padding
144 can cause next bpl to start close to a page border. First DMA
145 region may be smaller than PAGE_SIZE */
146 instructions = fields * (1 + ((bpl + padding) * lines) / PAGE_SIZE + lines);
147 instructions += 2;
148 if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0)
149 return rc;
150
151 /* write risc instructions */
152 rp = risc->cpu;
153 if (UNSET != top_offset)
154 rp = cx88_risc_field(rp, sglist, top_offset, 0,
155 bpl, padding, lines, 0);
156 if (UNSET != bottom_offset)
157 rp = cx88_risc_field(rp, sglist, bottom_offset, 0x200,
158 bpl, padding, lines, 0);
159
160 /* save pointer to jmp instruction address */
161 risc->jmp = rp;
162 BUG_ON((risc->jmp - risc->cpu + 2) * sizeof (*risc->cpu) > risc->size);
163 return 0;
164 }
165
166 int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc,
167 struct scatterlist *sglist, unsigned int bpl,
168 unsigned int lines, unsigned int lpi)
169 {
170 u32 instructions;
171 u32 *rp;
172 int rc;
173
174 /* estimate risc mem: worst case is one write per page border +
175 one write per scan line + syncs + jump (all 2 dwords). Here
176 there is no padding and no sync. First DMA region may be smaller
177 than PAGE_SIZE */
178 instructions = 1 + (bpl * lines) / PAGE_SIZE + lines;
179 instructions += 1;
180 if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0)
181 return rc;
182
183 /* write risc instructions */
184 rp = risc->cpu;
185 rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines, lpi);
186
187 /* save pointer to jmp instruction address */
188 risc->jmp = rp;
189 BUG_ON((risc->jmp - risc->cpu + 2) * sizeof (*risc->cpu) > risc->size);
190 return 0;
191 }
192
193 int cx88_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
194 u32 reg, u32 mask, u32 value)
195 {
196 u32 *rp;
197 int rc;
198
199 if ((rc = btcx_riscmem_alloc(pci, risc, 4*16)) < 0)
200 return rc;
201
202 /* write risc instructions */
203 rp = risc->cpu;
204 *(rp++) = cpu_to_le32(RISC_WRITECR | RISC_IRQ2 | RISC_IMM);
205 *(rp++) = cpu_to_le32(reg);
206 *(rp++) = cpu_to_le32(value);
207 *(rp++) = cpu_to_le32(mask);
208 *(rp++) = cpu_to_le32(RISC_JUMP);
209 *(rp++) = cpu_to_le32(risc->dma);
210 return 0;
211 }
212
213 void
214 cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf)
215 {
216 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
217
218 BUG_ON(in_interrupt());
219 videobuf_waiton(&buf->vb,0,0);
220 videobuf_dma_unmap(q, dma);
221 videobuf_dma_free(dma);
222 btcx_riscmem_free((struct pci_dev *)q->dev, &buf->risc);
223 buf->vb.state = VIDEOBUF_NEEDS_INIT;
224 }
225
226 /* ------------------------------------------------------------------ */
227 /* our SRAM memory layout */
228
229 /* we are going to put all thr risc programs into host memory, so we
230 * can use the whole SDRAM for the DMA fifos. To simplify things, we
231 * use a static memory layout. That surely will waste memory in case
232 * we don't use all DMA channels at the same time (which will be the
233 * case most of the time). But that still gives us enougth FIFO space
234 * to be able to deal with insane long pci latencies ...
235 *
236 * FIFO space allocations:
237 * channel 21 (y video) - 10.0k
238 * channel 22 (u video) - 2.0k
239 * channel 23 (v video) - 2.0k
240 * channel 24 (vbi) - 4.0k
241 * channels 25+26 (audio) - 4.0k
242 * channel 28 (mpeg) - 4.0k
243 * TOTAL = 29.0k
244 *
245 * Every channel has 160 bytes control data (64 bytes instruction
246 * queue and 6 CDT entries), which is close to 2k total.
247 *
248 * Address layout:
249 * 0x0000 - 0x03ff CMDs / reserved
250 * 0x0400 - 0x0bff instruction queues + CDs
251 * 0x0c00 - FIFOs
252 */
253
254 struct sram_channel cx88_sram_channels[] = {
255 [SRAM_CH21] = {
256 .name = "video y / packed",
257 .cmds_start = 0x180040,
258 .ctrl_start = 0x180400,
259 .cdt = 0x180400 + 64,
260 .fifo_start = 0x180c00,
261 .fifo_size = 0x002800,
262 .ptr1_reg = MO_DMA21_PTR1,
263 .ptr2_reg = MO_DMA21_PTR2,
264 .cnt1_reg = MO_DMA21_CNT1,
265 .cnt2_reg = MO_DMA21_CNT2,
266 },
267 [SRAM_CH22] = {
268 .name = "video u",
269 .cmds_start = 0x180080,
270 .ctrl_start = 0x1804a0,
271 .cdt = 0x1804a0 + 64,
272 .fifo_start = 0x183400,
273 .fifo_size = 0x000800,
274 .ptr1_reg = MO_DMA22_PTR1,
275 .ptr2_reg = MO_DMA22_PTR2,
276 .cnt1_reg = MO_DMA22_CNT1,
277 .cnt2_reg = MO_DMA22_CNT2,
278 },
279 [SRAM_CH23] = {
280 .name = "video v",
281 .cmds_start = 0x1800c0,
282 .ctrl_start = 0x180540,
283 .cdt = 0x180540 + 64,
284 .fifo_start = 0x183c00,
285 .fifo_size = 0x000800,
286 .ptr1_reg = MO_DMA23_PTR1,
287 .ptr2_reg = MO_DMA23_PTR2,
288 .cnt1_reg = MO_DMA23_CNT1,
289 .cnt2_reg = MO_DMA23_CNT2,
290 },
291 [SRAM_CH24] = {
292 .name = "vbi",
293 .cmds_start = 0x180100,
294 .ctrl_start = 0x1805e0,
295 .cdt = 0x1805e0 + 64,
296 .fifo_start = 0x184400,
297 .fifo_size = 0x001000,
298 .ptr1_reg = MO_DMA24_PTR1,
299 .ptr2_reg = MO_DMA24_PTR2,
300 .cnt1_reg = MO_DMA24_CNT1,
301 .cnt2_reg = MO_DMA24_CNT2,
302 },
303 [SRAM_CH25] = {
304 .name = "audio from",
305 .cmds_start = 0x180140,
306 .ctrl_start = 0x180680,
307 .cdt = 0x180680 + 64,
308 .fifo_start = 0x185400,
309 .fifo_size = 0x001000,
310 .ptr1_reg = MO_DMA25_PTR1,
311 .ptr2_reg = MO_DMA25_PTR2,
312 .cnt1_reg = MO_DMA25_CNT1,
313 .cnt2_reg = MO_DMA25_CNT2,
314 },
315 [SRAM_CH26] = {
316 .name = "audio to",
317 .cmds_start = 0x180180,
318 .ctrl_start = 0x180720,
319 .cdt = 0x180680 + 64, /* same as audio IN */
320 .fifo_start = 0x185400, /* same as audio IN */
321 .fifo_size = 0x001000, /* same as audio IN */
322 .ptr1_reg = MO_DMA26_PTR1,
323 .ptr2_reg = MO_DMA26_PTR2,
324 .cnt1_reg = MO_DMA26_CNT1,
325 .cnt2_reg = MO_DMA26_CNT2,
326 },
327 [SRAM_CH28] = {
328 .name = "mpeg",
329 .cmds_start = 0x180200,
330 .ctrl_start = 0x1807C0,
331 .cdt = 0x1807C0 + 64,
332 .fifo_start = 0x186400,
333 .fifo_size = 0x001000,
334 .ptr1_reg = MO_DMA28_PTR1,
335 .ptr2_reg = MO_DMA28_PTR2,
336 .cnt1_reg = MO_DMA28_CNT1,
337 .cnt2_reg = MO_DMA28_CNT2,
338 },
339 };
340
341 int cx88_sram_channel_setup(struct cx88_core *core,
342 struct sram_channel *ch,
343 unsigned int bpl, u32 risc)
344 {
345 unsigned int i,lines;
346 u32 cdt;
347
348 bpl = (bpl + 7) & ~7; /* alignment */
349 cdt = ch->cdt;
350 lines = ch->fifo_size / bpl;
351 if (lines > 6)
352 lines = 6;
353 BUG_ON(lines < 2);
354
355 /* write CDT */
356 for (i = 0; i < lines; i++)
357 cx_write(cdt + 16*i, ch->fifo_start + bpl*i);
358
359 /* write CMDS */
360 cx_write(ch->cmds_start + 0, risc);
361 cx_write(ch->cmds_start + 4, cdt);
362 cx_write(ch->cmds_start + 8, (lines*16) >> 3);
363 cx_write(ch->cmds_start + 12, ch->ctrl_start);
364 cx_write(ch->cmds_start + 16, 64 >> 2);
365 for (i = 20; i < 64; i += 4)
366 cx_write(ch->cmds_start + i, 0);
367
368 /* fill registers */
369 cx_write(ch->ptr1_reg, ch->fifo_start);
370 cx_write(ch->ptr2_reg, cdt);
371 cx_write(ch->cnt1_reg, (bpl >> 3) -1);
372 cx_write(ch->cnt2_reg, (lines*16) >> 3);
373
374 dprintk(2,"sram setup %s: bpl=%d lines=%d\n", ch->name, bpl, lines);
375 return 0;
376 }
377
378 /* ------------------------------------------------------------------ */
379 /* debug helper code */
380
381 static int cx88_risc_decode(u32 risc)
382 {
383 static char *instr[16] = {
384 [ RISC_SYNC >> 28 ] = "sync",
385 [ RISC_WRITE >> 28 ] = "write",
386 [ RISC_WRITEC >> 28 ] = "writec",
387 [ RISC_READ >> 28 ] = "read",
388 [ RISC_READC >> 28 ] = "readc",
389 [ RISC_JUMP >> 28 ] = "jump",
390 [ RISC_SKIP >> 28 ] = "skip",
391 [ RISC_WRITERM >> 28 ] = "writerm",
392 [ RISC_WRITECM >> 28 ] = "writecm",
393 [ RISC_WRITECR >> 28 ] = "writecr",
394 };
395 static int incr[16] = {
396 [ RISC_WRITE >> 28 ] = 2,
397 [ RISC_JUMP >> 28 ] = 2,
398 [ RISC_WRITERM >> 28 ] = 3,
399 [ RISC_WRITECM >> 28 ] = 3,
400 [ RISC_WRITECR >> 28 ] = 4,
401 };
402 static char *bits[] = {
403 "12", "13", "14", "resync",
404 "cnt0", "cnt1", "18", "19",
405 "20", "21", "22", "23",
406 "irq1", "irq2", "eol", "sol",
407 };
408 int i;
409
410 printk("0x%08x [ %s", risc,
411 instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
412 for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
413 if (risc & (1 << (i + 12)))
414 printk(" %s",bits[i]);
415 printk(" count=%d ]\n", risc & 0xfff);
416 return incr[risc >> 28] ? incr[risc >> 28] : 1;
417 }
418
419
420 void cx88_sram_channel_dump(struct cx88_core *core,
421 struct sram_channel *ch)
422 {
423 static char *name[] = {
424 "initial risc",
425 "cdt base",
426 "cdt size",
427 "iq base",
428 "iq size",
429 "risc pc",
430 "iq wr ptr",
431 "iq rd ptr",
432 "cdt current",
433 "pci target",
434 "line / byte",
435 };
436 u32 risc;
437 unsigned int i,j,n;
438
439 printk("%s: %s - dma channel status dump\n",
440 core->name,ch->name);
441 for (i = 0; i < ARRAY_SIZE(name); i++)
442 printk("%s: cmds: %-12s: 0x%08x\n",
443 core->name,name[i],
444 cx_read(ch->cmds_start + 4*i));
445 for (n = 1, i = 0; i < 4; i++) {
446 risc = cx_read(ch->cmds_start + 4 * (i+11));
447 printk("%s: risc%d: ", core->name, i);
448 if (--n)
449 printk("0x%08x [ arg #%d ]\n", risc, n);
450 else
451 n = cx88_risc_decode(risc);
452 }
453 for (i = 0; i < 16; i += n) {
454 risc = cx_read(ch->ctrl_start + 4 * i);
455 printk("%s: iq %x: ", core->name, i);
456 n = cx88_risc_decode(risc);
457 for (j = 1; j < n; j++) {
458 risc = cx_read(ch->ctrl_start + 4 * (i+j));
459 printk("%s: iq %x: 0x%08x [ arg #%d ]\n",
460 core->name, i+j, risc, j);
461 }
462 }
463
464 printk("%s: fifo: 0x%08x -> 0x%x\n",
465 core->name, ch->fifo_start, ch->fifo_start+ch->fifo_size);
466 printk("%s: ctrl: 0x%08x -> 0x%x\n",
467 core->name, ch->ctrl_start, ch->ctrl_start+6*16);
468 printk("%s: ptr1_reg: 0x%08x\n",
469 core->name,cx_read(ch->ptr1_reg));
470 printk("%s: ptr2_reg: 0x%08x\n",
471 core->name,cx_read(ch->ptr2_reg));
472 printk("%s: cnt1_reg: 0x%08x\n",
473 core->name,cx_read(ch->cnt1_reg));
474 printk("%s: cnt2_reg: 0x%08x\n",
475 core->name,cx_read(ch->cnt2_reg));
476 }
477
478 static char *cx88_pci_irqs[32] = {
479 "vid", "aud", "ts", "vip", "hst", "5", "6", "tm1",
480 "src_dma", "dst_dma", "risc_rd_err", "risc_wr_err",
481 "brdg_err", "src_dma_err", "dst_dma_err", "ipb_dma_err",
482 "i2c", "i2c_rack", "ir_smp", "gpio0", "gpio1"
483 };
484
485 void cx88_print_irqbits(char *name, char *tag, char **strings,
486 int len, u32 bits, u32 mask)
487 {
488 unsigned int i;
489
490 printk(KERN_DEBUG "%s: %s [0x%x]", name, tag, bits);
491 for (i = 0; i < len; i++) {
492 if (!(bits & (1 << i)))
493 continue;
494 if (strings[i])
495 printk(" %s", strings[i]);
496 else
497 printk(" %d", i);
498 if (!(mask & (1 << i)))
499 continue;
500 printk("*");
501 }
502 printk("\n");
503 }
504
505 /* ------------------------------------------------------------------ */
506
507 int cx88_core_irq(struct cx88_core *core, u32 status)
508 {
509 int handled = 0;
510
511 if (status & PCI_INT_IR_SMPINT) {
512 cx88_ir_irq(core);
513 handled++;
514 }
515 if (!handled)
516 cx88_print_irqbits(core->name, "irq pci",
517 cx88_pci_irqs, ARRAY_SIZE(cx88_pci_irqs),
518 status, core->pci_irqmask);
519 return handled;
520 }
521
522 void cx88_wakeup(struct cx88_core *core,
523 struct cx88_dmaqueue *q, u32 count)
524 {
525 struct cx88_buffer *buf;
526 int bc;
527
528 for (bc = 0;; bc++) {
529 if (list_empty(&q->active))
530 break;
531 buf = list_entry(q->active.next,
532 struct cx88_buffer, vb.queue);
533 /* count comes from the hw and is is 16bit wide --
534 * this trick handles wrap-arounds correctly for
535 * up to 32767 buffers in flight... */
536 if ((s16) (count - buf->count) < 0)
537 break;
538 do_gettimeofday(&buf->vb.ts);
539 dprintk(2,"[%p/%d] wakeup reg=%d buf=%d\n",buf,buf->vb.i,
540 count, buf->count);
541 buf->vb.state = VIDEOBUF_DONE;
542 list_del(&buf->vb.queue);
543 wake_up(&buf->vb.done);
544 }
545 if (list_empty(&q->active)) {
546 del_timer(&q->timeout);
547 } else {
548 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
549 }
550 if (bc != 1)
551 printk("%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc);
552 }
553
554 void cx88_shutdown(struct cx88_core *core)
555 {
556 /* disable RISC controller + IRQs */
557 cx_write(MO_DEV_CNTRL2, 0);
558
559 /* stop dma transfers */
560 cx_write(MO_VID_DMACNTRL, 0x0);
561 cx_write(MO_AUD_DMACNTRL, 0x0);
562 cx_write(MO_TS_DMACNTRL, 0x0);
563 cx_write(MO_VIP_DMACNTRL, 0x0);
564 cx_write(MO_GPHST_DMACNTRL, 0x0);
565
566 /* stop interrupts */
567 cx_write(MO_PCI_INTMSK, 0x0);
568 cx_write(MO_VID_INTMSK, 0x0);
569 cx_write(MO_AUD_INTMSK, 0x0);
570 cx_write(MO_TS_INTMSK, 0x0);
571 cx_write(MO_VIP_INTMSK, 0x0);
572 cx_write(MO_GPHST_INTMSK, 0x0);
573
574 /* stop capturing */
575 cx_write(VID_CAPTURE_CONTROL, 0);
576 }
577
578 int cx88_reset(struct cx88_core *core)
579 {
580 dprintk(1,"%s\n",__FUNCTION__);
581 cx88_shutdown(core);
582
583 /* clear irq status */
584 cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int
585 cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int
586 cx_write(MO_INT1_STAT, 0xFFFFFFFF); // Clear RISC int
587
588 /* wait a bit */
589 msleep(100);
590
591 /* init sram */
592 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH21], 720*4, 0);
593 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH22], 128, 0);
594 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH23], 128, 0);
595 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH24], 128, 0);
596 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], 128, 0);
597 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], 128, 0);
598 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], 188*4, 0);
599
600 /* misc init ... */
601 cx_write(MO_INPUT_FORMAT, ((1 << 13) | // agc enable
602 (1 << 12) | // agc gain
603 (1 << 11) | // adaptibe agc
604 (0 << 10) | // chroma agc
605 (0 << 9) | // ckillen
606 (7)));
607
608 /* setup image format */
609 cx_andor(MO_COLOR_CTRL, 0x4000, 0x4000);
610
611 /* setup FIFO Threshholds */
612 cx_write(MO_PDMA_STHRSH, 0x0807);
613 cx_write(MO_PDMA_DTHRSH, 0x0807);
614
615 /* fixes flashing of image */
616 cx_write(MO_AGC_SYNC_TIP1, 0x0380000F);
617 cx_write(MO_AGC_BACK_VBI, 0x00E00555);
618
619 cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int
620 cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int
621 cx_write(MO_INT1_STAT, 0xFFFFFFFF); // Clear RISC int
622
623 /* Reset on-board parts */
624 cx_write(MO_SRST_IO, 0);
625 msleep(10);
626 cx_write(MO_SRST_IO, 1);
627
628 return 0;
629 }
630
631 /* ------------------------------------------------------------------ */
632
633 static unsigned int inline norm_swidth(v4l2_std_id norm)
634 {
635 return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 754 : 922;
636 }
637
638 static unsigned int inline norm_hdelay(v4l2_std_id norm)
639 {
640 return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 135 : 186;
641 }
642
643 static unsigned int inline norm_vdelay(v4l2_std_id norm)
644 {
645 return (norm & V4L2_STD_625_50) ? 0x24 : 0x18;
646 }
647
648 static unsigned int inline norm_fsc8(v4l2_std_id norm)
649 {
650 if (norm & V4L2_STD_PAL_M)
651 return 28604892; // 3.575611 MHz
652
653 if (norm & (V4L2_STD_PAL_Nc))
654 return 28656448; // 3.582056 MHz
655
656 if (norm & V4L2_STD_NTSC) // All NTSC/M and variants
657 return 28636360; // 3.57954545 MHz +/- 10 Hz
658
659 /* SECAM have also different sub carrier for chroma,
660 but step_db and step_dr, at cx88_set_tvnorm already handles that.
661
662 The same FSC applies to PAL/BGDKIH, PAL/60, NTSC/4.43 and PAL/N
663 */
664
665 return 35468950; // 4.43361875 MHz +/- 5 Hz
666 }
667
668 static unsigned int inline norm_htotal(v4l2_std_id norm)
669 {
670
671 unsigned int fsc4=norm_fsc8(norm)/2;
672
673 /* returns 4*FSC / vtotal / frames per seconds */
674 return (norm & V4L2_STD_625_50) ?
675 ((fsc4+312)/625+12)/25 :
676 ((fsc4+262)/525*1001+15000)/30000;
677 }
678
679 static unsigned int inline norm_vbipack(v4l2_std_id norm)
680 {
681 return (norm & V4L2_STD_625_50) ? 511 : 400;
682 }
683
684 int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int height,
685 enum v4l2_field field)
686 {
687 unsigned int swidth = norm_swidth(core->tvnorm);
688 unsigned int sheight = norm_maxh(core->tvnorm);
689 u32 value;
690
691 dprintk(1,"set_scale: %dx%d [%s%s,%s]\n", width, height,
692 V4L2_FIELD_HAS_TOP(field) ? "T" : "",
693 V4L2_FIELD_HAS_BOTTOM(field) ? "B" : "",
694 v4l2_norm_to_name(core->tvnorm));
695 if (!V4L2_FIELD_HAS_BOTH(field))
696 height *= 2;
697
698 // recalc H delay and scale registers
699 value = (width * norm_hdelay(core->tvnorm)) / swidth;
700 value &= 0x3fe;
701 cx_write(MO_HDELAY_EVEN, value);
702 cx_write(MO_HDELAY_ODD, value);
703 dprintk(1,"set_scale: hdelay 0x%04x (width %d)\n", value,swidth);
704
705 value = (swidth * 4096 / width) - 4096;
706 cx_write(MO_HSCALE_EVEN, value);
707 cx_write(MO_HSCALE_ODD, value);
708 dprintk(1,"set_scale: hscale 0x%04x\n", value);
709
710 cx_write(MO_HACTIVE_EVEN, width);
711 cx_write(MO_HACTIVE_ODD, width);
712 dprintk(1,"set_scale: hactive 0x%04x\n", width);
713
714 // recalc V scale Register (delay is constant)
715 cx_write(MO_VDELAY_EVEN, norm_vdelay(core->tvnorm));
716 cx_write(MO_VDELAY_ODD, norm_vdelay(core->tvnorm));
717 dprintk(1,"set_scale: vdelay 0x%04x\n", norm_vdelay(core->tvnorm));
718
719 value = (0x10000 - (sheight * 512 / height - 512)) & 0x1fff;
720 cx_write(MO_VSCALE_EVEN, value);
721 cx_write(MO_VSCALE_ODD, value);
722 dprintk(1,"set_scale: vscale 0x%04x\n", value);
723
724 cx_write(MO_VACTIVE_EVEN, sheight);
725 cx_write(MO_VACTIVE_ODD, sheight);
726 dprintk(1,"set_scale: vactive 0x%04x\n", sheight);
727
728 // setup filters
729 value = 0;
730 value |= (1 << 19); // CFILT (default)
731 if (core->tvnorm & V4L2_STD_SECAM) {
732 value |= (1 << 15);
733 value |= (1 << 16);
734 }
735 if (INPUT(core->input).type == CX88_VMUX_SVIDEO)
736 value |= (1 << 13) | (1 << 5);
737 if (V4L2_FIELD_INTERLACED == field)
738 value |= (1 << 3); // VINT (interlaced vertical scaling)
739 if (width < 385)
740 value |= (1 << 0); // 3-tap interpolation
741 if (width < 193)
742 value |= (1 << 1); // 5-tap interpolation
743 if (nocomb)
744 value |= (3 << 5); // disable comb filter
745
746 cx_write(MO_FILTER_EVEN, value);
747 cx_write(MO_FILTER_ODD, value);
748 dprintk(1,"set_scale: filter 0x%04x\n", value);
749
750 return 0;
751 }
752
753 static const u32 xtal = 28636363;
754
755 static int set_pll(struct cx88_core *core, int prescale, u32 ofreq)
756 {
757 static u32 pre[] = { 0, 0, 0, 3, 2, 1 };
758 u64 pll;
759 u32 reg;
760 int i;
761
762 if (prescale < 2)
763 prescale = 2;
764 if (prescale > 5)
765 prescale = 5;
766
767 pll = ofreq * 8 * prescale * (u64)(1 << 20);
768 do_div(pll,xtal);
769 reg = (pll & 0x3ffffff) | (pre[prescale] << 26);
770 if (((reg >> 20) & 0x3f) < 14) {
771 printk("%s/0: pll out of range\n",core->name);
772 return -1;
773 }
774
775 dprintk(1,"set_pll: MO_PLL_REG 0x%08x [old=0x%08x,freq=%d]\n",
776 reg, cx_read(MO_PLL_REG), ofreq);
777 cx_write(MO_PLL_REG, reg);
778 for (i = 0; i < 100; i++) {
779 reg = cx_read(MO_DEVICE_STATUS);
780 if (reg & (1<<2)) {
781 dprintk(1,"pll locked [pre=%d,ofreq=%d]\n",
782 prescale,ofreq);
783 return 0;
784 }
785 dprintk(1,"pll not locked yet, waiting ...\n");
786 msleep(10);
787 }
788 dprintk(1,"pll NOT locked [pre=%d,ofreq=%d]\n",prescale,ofreq);
789 return -1;
790 }
791
792 int cx88_start_audio_dma(struct cx88_core *core)
793 {
794 /* constant 128 made buzz in analog Nicam-stereo for bigger fifo_size */
795 int bpl = cx88_sram_channels[SRAM_CH25].fifo_size/4;
796
797 /* If downstream RISC is enabled, bail out; ALSA is managing DMA */
798 if (cx_read(MO_AUD_DMACNTRL) & 0x10)
799 return 0;
800
801 /* setup fifo + format */
802 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], bpl, 0);
803 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], bpl, 0);
804
805 cx_write(MO_AUDD_LNGTH, bpl); /* fifo bpl size */
806 cx_write(MO_AUDR_LNGTH, bpl); /* fifo bpl size */
807
808 /* start dma */
809 cx_write(MO_AUD_DMACNTRL, 0x0003); /* Up and Down fifo enable */
810
811 return 0;
812 }
813
814 int cx88_stop_audio_dma(struct cx88_core *core)
815 {
816 /* If downstream RISC is enabled, bail out; ALSA is managing DMA */
817 if (cx_read(MO_AUD_DMACNTRL) & 0x10)
818 return 0;
819
820 /* stop dma */
821 cx_write(MO_AUD_DMACNTRL, 0x0000);
822
823 return 0;
824 }
825
826 static int set_tvaudio(struct cx88_core *core)
827 {
828 v4l2_std_id norm = core->tvnorm;
829
830 if (CX88_VMUX_TELEVISION != INPUT(core->input).type)
831 return 0;
832
833 if (V4L2_STD_PAL_BG & norm) {
834 core->tvaudio = WW_BG;
835
836 } else if (V4L2_STD_PAL_DK & norm) {
837 core->tvaudio = WW_DK;
838
839 } else if (V4L2_STD_PAL_I & norm) {
840 core->tvaudio = WW_I;
841
842 } else if (V4L2_STD_SECAM_L & norm) {
843 core->tvaudio = WW_L;
844
845 } else if (V4L2_STD_SECAM_DK & norm) {
846 core->tvaudio = WW_DK;
847
848 } else if ((V4L2_STD_NTSC_M & norm) ||
849 (V4L2_STD_PAL_M & norm)) {
850 core->tvaudio = WW_BTSC;
851
852 } else if (V4L2_STD_NTSC_M_JP & norm) {
853 core->tvaudio = WW_EIAJ;
854
855 } else {
856 printk("%s/0: tvaudio support needs work for this tv norm [%s], sorry\n",
857 core->name, v4l2_norm_to_name(core->tvnorm));
858 core->tvaudio = 0;
859 return 0;
860 }
861
862 cx_andor(MO_AFECFG_IO, 0x1f, 0x0);
863 cx88_set_tvaudio(core);
864 /* cx88_set_stereo(dev,V4L2_TUNER_MODE_STEREO); */
865
866 /*
867 This should be needed only on cx88-alsa. It seems that some cx88 chips have
868 bugs and does require DMA enabled for it to work.
869 */
870 cx88_start_audio_dma(core);
871 return 0;
872 }
873
874
875
876 int cx88_set_tvnorm(struct cx88_core *core, v4l2_std_id norm)
877 {
878 u32 fsc8;
879 u32 adc_clock;
880 u32 vdec_clock;
881 u32 step_db,step_dr;
882 u64 tmp64;
883 u32 bdelay,agcdelay,htotal;
884 u32 cxiformat, cxoformat;
885
886 core->tvnorm = norm;
887 fsc8 = norm_fsc8(norm);
888 adc_clock = xtal;
889 vdec_clock = fsc8;
890 step_db = fsc8;
891 step_dr = fsc8;
892
893 if (norm & V4L2_STD_NTSC_M_JP) {
894 cxiformat = VideoFormatNTSCJapan;
895 cxoformat = 0x181f0008;
896 } else if (norm & V4L2_STD_NTSC_443) {
897 cxiformat = VideoFormatNTSC443;
898 cxoformat = 0x181f0008;
899 } else if (norm & V4L2_STD_PAL_M) {
900 cxiformat = VideoFormatPALM;
901 cxoformat = 0x1c1f0008;
902 } else if (norm & V4L2_STD_PAL_N) {
903 cxiformat = VideoFormatPALN;
904 cxoformat = 0x1c1f0008;
905 } else if (norm & V4L2_STD_PAL_Nc) {
906 cxiformat = VideoFormatPALNC;
907 cxoformat = 0x1c1f0008;
908 } else if (norm & V4L2_STD_PAL_60) {
909 cxiformat = VideoFormatPAL60;
910 cxoformat = 0x181f0008;
911 } else if (norm & V4L2_STD_NTSC) {
912 cxiformat = VideoFormatNTSC;
913 cxoformat = 0x181f0008;
914 } else if (norm & V4L2_STD_SECAM) {
915 step_db = 4250000 * 8;
916 step_dr = 4406250 * 8;
917
918 cxiformat = VideoFormatSECAM;
919 cxoformat = 0x181f0008;
920 } else { /* PAL */
921 cxiformat = VideoFormatPAL;
922 cxoformat = 0x181f0008;
923 }
924
925 dprintk(1,"set_tvnorm: \"%s\" fsc8=%d adc=%d vdec=%d db/dr=%d/%d\n",
926 v4l2_norm_to_name(core->tvnorm), fsc8, adc_clock, vdec_clock,
927 step_db, step_dr);
928 set_pll(core,2,vdec_clock);
929
930 dprintk(1,"set_tvnorm: MO_INPUT_FORMAT 0x%08x [old=0x%08x]\n",
931 cxiformat, cx_read(MO_INPUT_FORMAT) & 0x0f);
932 cx_andor(MO_INPUT_FORMAT, 0xf, cxiformat);
933
934 // FIXME: as-is from DScaler
935 dprintk(1,"set_tvnorm: MO_OUTPUT_FORMAT 0x%08x [old=0x%08x]\n",
936 cxoformat, cx_read(MO_OUTPUT_FORMAT));
937 cx_write(MO_OUTPUT_FORMAT, cxoformat);
938
939 // MO_SCONV_REG = adc clock / video dec clock * 2^17
940 tmp64 = adc_clock * (u64)(1 << 17);
941 do_div(tmp64, vdec_clock);
942 dprintk(1,"set_tvnorm: MO_SCONV_REG 0x%08x [old=0x%08x]\n",
943 (u32)tmp64, cx_read(MO_SCONV_REG));
944 cx_write(MO_SCONV_REG, (u32)tmp64);
945
946 // MO_SUB_STEP = 8 * fsc / video dec clock * 2^22
947 tmp64 = step_db * (u64)(1 << 22);
948 do_div(tmp64, vdec_clock);
949 dprintk(1,"set_tvnorm: MO_SUB_STEP 0x%08x [old=0x%08x]\n",
950 (u32)tmp64, cx_read(MO_SUB_STEP));
951 cx_write(MO_SUB_STEP, (u32)tmp64);
952
953 // MO_SUB_STEP_DR = 8 * 4406250 / video dec clock * 2^22
954 tmp64 = step_dr * (u64)(1 << 22);
955 do_div(tmp64, vdec_clock);
956 dprintk(1,"set_tvnorm: MO_SUB_STEP_DR 0x%08x [old=0x%08x]\n",
957 (u32)tmp64, cx_read(MO_SUB_STEP_DR));
958 cx_write(MO_SUB_STEP_DR, (u32)tmp64);
959
960 // bdelay + agcdelay
961 bdelay = vdec_clock * 65 / 20000000 + 21;
962 agcdelay = vdec_clock * 68 / 20000000 + 15;
963 dprintk(1,"set_tvnorm: MO_AGC_BURST 0x%08x [old=0x%08x,bdelay=%d,agcdelay=%d]\n",
964 (bdelay << 8) | agcdelay, cx_read(MO_AGC_BURST), bdelay, agcdelay);
965 cx_write(MO_AGC_BURST, (bdelay << 8) | agcdelay);
966
967 // htotal
968 tmp64 = norm_htotal(norm) * (u64)vdec_clock;
969 do_div(tmp64, fsc8);
970 htotal = (u32)tmp64 | (HLNotchFilter4xFsc << 11);
971 dprintk(1,"set_tvnorm: MO_HTOTAL 0x%08x [old=0x%08x,htotal=%d]\n",
972 htotal, cx_read(MO_HTOTAL), (u32)tmp64);
973 cx_write(MO_HTOTAL, htotal);
974
975 // vbi stuff, set vbi offset to 10 (for 20 Clk*2 pixels), this makes
976 // the effective vbi offset ~244 samples, the same as the Bt8x8
977 cx_write(MO_VBI_PACKET, (10<<11) | norm_vbipack(norm));
978
979 // this is needed as well to set all tvnorm parameter
980 cx88_set_scale(core, 320, 240, V4L2_FIELD_INTERLACED);
981
982 // audio
983 set_tvaudio(core);
984
985 // tell i2c chips
986 cx88_call_i2c_clients(core,VIDIOC_S_STD,&norm);
987
988 // done
989 return 0;
990 }
991
992 /* ------------------------------------------------------------------ */
993
994 struct video_device *cx88_vdev_init(struct cx88_core *core,
995 struct pci_dev *pci,
996 struct video_device *template,
997 char *type)
998 {
999 struct video_device *vfd;
1000
1001 vfd = video_device_alloc();
1002 if (NULL == vfd)
1003 return NULL;
1004 *vfd = *template;
1005 vfd->minor = -1;
1006 vfd->dev = &pci->dev;
1007 vfd->release = video_device_release;
1008 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
1009 core->name, type, core->board.name);
1010 return vfd;
1011 }
1012
1013 struct cx88_core* cx88_core_get(struct pci_dev *pci)
1014 {
1015 struct cx88_core *core;
1016
1017 mutex_lock(&devlist);
1018 list_for_each_entry(core, &cx88_devlist, devlist) {
1019 if (pci->bus->number != core->pci_bus)
1020 continue;
1021 if (PCI_SLOT(pci->devfn) != core->pci_slot)
1022 continue;
1023
1024 if (0 != cx88_get_resources(core, pci)) {
1025 mutex_unlock(&devlist);
1026 return NULL;
1027 }
1028 atomic_inc(&core->refcount);
1029 mutex_unlock(&devlist);
1030 return core;
1031 }
1032
1033 core = cx88_core_create(pci, cx88_devcount);
1034 if (NULL != core) {
1035 cx88_devcount++;
1036 list_add_tail(&core->devlist, &cx88_devlist);
1037 }
1038
1039 mutex_unlock(&devlist);
1040 return core;
1041 }
1042
1043 void cx88_core_put(struct cx88_core *core, struct pci_dev *pci)
1044 {
1045 release_mem_region(pci_resource_start(pci,0),
1046 pci_resource_len(pci,0));
1047
1048 if (!atomic_dec_and_test(&core->refcount))
1049 return;
1050
1051 mutex_lock(&devlist);
1052 cx88_ir_fini(core);
1053 if (0 == core->i2c_rc)
1054 i2c_del_adapter(&core->i2c_adap);
1055 list_del(&core->devlist);
1056 iounmap(core->lmmio);
1057 cx88_devcount--;
1058 mutex_unlock(&devlist);
1059 kfree(core);
1060 }
1061
1062 /* ------------------------------------------------------------------ */
1063
1064 EXPORT_SYMBOL(cx88_print_irqbits);
1065
1066 EXPORT_SYMBOL(cx88_core_irq);
1067 EXPORT_SYMBOL(cx88_wakeup);
1068 EXPORT_SYMBOL(cx88_reset);
1069 EXPORT_SYMBOL(cx88_shutdown);
1070
1071 EXPORT_SYMBOL(cx88_risc_buffer);
1072 EXPORT_SYMBOL(cx88_risc_databuffer);
1073 EXPORT_SYMBOL(cx88_risc_stopper);
1074 EXPORT_SYMBOL(cx88_free_buffer);
1075
1076 EXPORT_SYMBOL(cx88_sram_channels);
1077 EXPORT_SYMBOL(cx88_sram_channel_setup);
1078 EXPORT_SYMBOL(cx88_sram_channel_dump);
1079
1080 EXPORT_SYMBOL(cx88_set_tvnorm);
1081 EXPORT_SYMBOL(cx88_set_scale);
1082
1083 EXPORT_SYMBOL(cx88_vdev_init);
1084 EXPORT_SYMBOL(cx88_core_get);
1085 EXPORT_SYMBOL(cx88_core_put);
1086
1087 EXPORT_SYMBOL(cx88_ir_start);
1088 EXPORT_SYMBOL(cx88_ir_stop);
1089
1090 /*
1091 * Local variables:
1092 * c-basic-offset: 8
1093 * End:
1094 * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
1095 */
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