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Merge tag 'io_uring-5.11-2021-01-16' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / media / pci / cx88 / cx88-core.c
blob48c8a34295424bf08ab0480632830138fb8d4cc7
1 // SPDX-License-Identifier: GPL-2.0-or-later
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@kernel.org>
9 * - Multituner support
10 * - video_ioctl2 conversion
11 * - PAL/M fixes
12 */
13
14 #include "cx88.h"
15
16 #include <linux/init.h>
17 #include <linux/list.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/slab.h>
21 #include <linux/kmod.h>
22 #include <linux/sound.h>
23 #include <linux/interrupt.h>
24 #include <linux/pci.h>
25 #include <linux/delay.h>
26 #include <linux/videodev2.h>
27 #include <linux/mutex.h>
28
29 #include <media/v4l2-common.h>
30 #include <media/v4l2-ioctl.h>
31
32 MODULE_DESCRIPTION("v4l2 driver module for cx2388x based TV cards");
33 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
34 MODULE_LICENSE("GPL v2");
35
36 /* ------------------------------------------------------------------ */
37
38 unsigned int cx88_core_debug;
39 module_param_named(core_debug, cx88_core_debug, int, 0644);
40 MODULE_PARM_DESC(core_debug, "enable debug messages [core]");
41
42 static unsigned int nicam;
43 module_param(nicam, int, 0644);
44 MODULE_PARM_DESC(nicam, "tv audio is nicam");
45
46 static unsigned int nocomb;
47 module_param(nocomb, int, 0644);
48 MODULE_PARM_DESC(nocomb, "disable comb filter");
49
50 #define dprintk0(fmt, arg...) \
51 printk(KERN_DEBUG pr_fmt("%s: core:" fmt), \
52 __func__, ##arg) \
53
54 #define dprintk(level, fmt, arg...) do { \
55 if (cx88_core_debug >= level) \
56 printk(KERN_DEBUG pr_fmt("%s: core:" fmt), \
57 __func__, ##arg); \
58 } while (0)
59
60 static unsigned int cx88_devcount;
61 static LIST_HEAD(cx88_devlist);
62 static DEFINE_MUTEX(devlist);
63
64 #define NO_SYNC_LINE (-1U)
65
66 /*
67 * @lpi: lines per IRQ, or 0 to not generate irqs. Note: IRQ to be
68 * generated _after_ lpi lines are transferred.
69 */
70 static __le32 *cx88_risc_field(__le32 *rp, struct scatterlist *sglist,
71 unsigned int offset, u32 sync_line,
72 unsigned int bpl, unsigned int padding,
73 unsigned int lines, unsigned int lpi, bool jump)
74 {
75 struct scatterlist *sg;
76 unsigned int line, todo, sol;
77
78 if (jump) {
79 (*rp++) = cpu_to_le32(RISC_JUMP);
80 (*rp++) = 0;
81 }
82
83 /* sync instruction */
84 if (sync_line != NO_SYNC_LINE)
85 *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
86
87 /* scan lines */
88 sg = sglist;
89 for (line = 0; line < lines; line++) {
90 while (offset && offset >= sg_dma_len(sg)) {
91 offset -= sg_dma_len(sg);
92 sg = sg_next(sg);
93 }
94 if (lpi && line > 0 && !(line % lpi))
95 sol = RISC_SOL | RISC_IRQ1 | RISC_CNT_INC;
96 else
97 sol = RISC_SOL;
98 if (bpl <= sg_dma_len(sg) - offset) {
99 /* fits into current chunk */
100 *(rp++) = cpu_to_le32(RISC_WRITE | sol |
101 RISC_EOL | bpl);
102 *(rp++) = cpu_to_le32(sg_dma_address(sg) + offset);
103 offset += bpl;
104 } else {
105 /* scanline needs to be split */
106 todo = bpl;
107 *(rp++) = cpu_to_le32(RISC_WRITE | sol |
108 (sg_dma_len(sg) - offset));
109 *(rp++) = cpu_to_le32(sg_dma_address(sg) + offset);
110 todo -= (sg_dma_len(sg) - offset);
111 offset = 0;
112 sg = sg_next(sg);
113 while (todo > sg_dma_len(sg)) {
114 *(rp++) = cpu_to_le32(RISC_WRITE |
115 sg_dma_len(sg));
116 *(rp++) = cpu_to_le32(sg_dma_address(sg));
117 todo -= sg_dma_len(sg);
118 sg = sg_next(sg);
119 }
120 *(rp++) = cpu_to_le32(RISC_WRITE | RISC_EOL | todo);
121 *(rp++) = cpu_to_le32(sg_dma_address(sg));
122 offset += todo;
123 }
124 offset += padding;
125 }
126
127 return rp;
128 }
129
130 int cx88_risc_buffer(struct pci_dev *pci, struct cx88_riscmem *risc,
131 struct scatterlist *sglist,
132 unsigned int top_offset, unsigned int bottom_offset,
133 unsigned int bpl, unsigned int padding, unsigned int lines)
134 {
135 u32 instructions, fields;
136 __le32 *rp;
137
138 fields = 0;
139 if (top_offset != UNSET)
140 fields++;
141 if (bottom_offset != UNSET)
142 fields++;
143
144 /*
145 * estimate risc mem: worst case is one write per page border +
146 * one write per scan line + syncs + jump (all 2 dwords). Padding
147 * can cause next bpl to start close to a page border. First DMA
148 * region may be smaller than PAGE_SIZE
149 */
150 instructions = fields * (1 + ((bpl + padding) * lines) /
151 PAGE_SIZE + lines);
152 instructions += 4;
153 risc->size = instructions * 8;
154 risc->dma = 0;
155 risc->cpu = pci_zalloc_consistent(pci, risc->size, &risc->dma);
156 if (!risc->cpu)
157 return -ENOMEM;
158
159 /* write risc instructions */
160 rp = risc->cpu;
161 if (top_offset != UNSET)
162 rp = cx88_risc_field(rp, sglist, top_offset, 0,
163 bpl, padding, lines, 0, true);
164 if (bottom_offset != UNSET)
165 rp = cx88_risc_field(rp, sglist, bottom_offset, 0x200,
166 bpl, padding, lines, 0,
167 top_offset == UNSET);
168
169 /* save pointer to jmp instruction address */
170 risc->jmp = rp;
171 WARN_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
172 return 0;
173 }
174 EXPORT_SYMBOL(cx88_risc_buffer);
175
176 int cx88_risc_databuffer(struct pci_dev *pci, struct cx88_riscmem *risc,
177 struct scatterlist *sglist, unsigned int bpl,
178 unsigned int lines, unsigned int lpi)
179 {
180 u32 instructions;
181 __le32 *rp;
182
183 /*
184 * estimate risc mem: worst case is one write per page border +
185 * one write per scan line + syncs + jump (all 2 dwords). Here
186 * there is no padding and no sync. First DMA region may be smaller
187 * than PAGE_SIZE
188 */
189 instructions = 1 + (bpl * lines) / PAGE_SIZE + lines;
190 instructions += 3;
191 risc->size = instructions * 8;
192 risc->dma = 0;
193 risc->cpu = pci_zalloc_consistent(pci, risc->size, &risc->dma);
194 if (!risc->cpu)
195 return -ENOMEM;
196
197 /* write risc instructions */
198 rp = risc->cpu;
199 rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0,
200 lines, lpi, !lpi);
201
202 /* save pointer to jmp instruction address */
203 risc->jmp = rp;
204 WARN_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
205 return 0;
206 }
207 EXPORT_SYMBOL(cx88_risc_databuffer);
208
209 /*
210 * our SRAM memory layout
211 */
212
213 /*
214 * we are going to put all thr risc programs into host memory, so we
215 * can use the whole SDRAM for the DMA fifos. To simplify things, we
216 * use a static memory layout. That surely will waste memory in case
217 * we don't use all DMA channels at the same time (which will be the
218 * case most of the time). But that still gives us enough FIFO space
219 * to be able to deal with insane long pci latencies ...
220 *
221 * FIFO space allocations:
222 * channel 21 (y video) - 10.0k
223 * channel 22 (u video) - 2.0k
224 * channel 23 (v video) - 2.0k
225 * channel 24 (vbi) - 4.0k
226 * channels 25+26 (audio) - 4.0k
227 * channel 28 (mpeg) - 4.0k
228 * channel 27 (audio rds)- 3.0k
229 * TOTAL = 29.0k
230 *
231 * Every channel has 160 bytes control data (64 bytes instruction
232 * queue and 6 CDT entries), which is close to 2k total.
233 *
234 * Address layout:
235 * 0x0000 - 0x03ff CMDs / reserved
236 * 0x0400 - 0x0bff instruction queues + CDs
237 * 0x0c00 - FIFOs
238 */
239
240 const struct sram_channel cx88_sram_channels[] = {
241 [SRAM_CH21] = {
242 .name = "video y / packed",
243 .cmds_start = 0x180040,
244 .ctrl_start = 0x180400,
245 .cdt = 0x180400 + 64,
246 .fifo_start = 0x180c00,
247 .fifo_size = 0x002800,
248 .ptr1_reg = MO_DMA21_PTR1,
249 .ptr2_reg = MO_DMA21_PTR2,
250 .cnt1_reg = MO_DMA21_CNT1,
251 .cnt2_reg = MO_DMA21_CNT2,
252 },
253 [SRAM_CH22] = {
254 .name = "video u",
255 .cmds_start = 0x180080,
256 .ctrl_start = 0x1804a0,
257 .cdt = 0x1804a0 + 64,
258 .fifo_start = 0x183400,
259 .fifo_size = 0x000800,
260 .ptr1_reg = MO_DMA22_PTR1,
261 .ptr2_reg = MO_DMA22_PTR2,
262 .cnt1_reg = MO_DMA22_CNT1,
263 .cnt2_reg = MO_DMA22_CNT2,
264 },
265 [SRAM_CH23] = {
266 .name = "video v",
267 .cmds_start = 0x1800c0,
268 .ctrl_start = 0x180540,
269 .cdt = 0x180540 + 64,
270 .fifo_start = 0x183c00,
271 .fifo_size = 0x000800,
272 .ptr1_reg = MO_DMA23_PTR1,
273 .ptr2_reg = MO_DMA23_PTR2,
274 .cnt1_reg = MO_DMA23_CNT1,
275 .cnt2_reg = MO_DMA23_CNT2,
276 },
277 [SRAM_CH24] = {
278 .name = "vbi",
279 .cmds_start = 0x180100,
280 .ctrl_start = 0x1805e0,
281 .cdt = 0x1805e0 + 64,
282 .fifo_start = 0x184400,
283 .fifo_size = 0x001000,
284 .ptr1_reg = MO_DMA24_PTR1,
285 .ptr2_reg = MO_DMA24_PTR2,
286 .cnt1_reg = MO_DMA24_CNT1,
287 .cnt2_reg = MO_DMA24_CNT2,
288 },
289 [SRAM_CH25] = {
290 .name = "audio from",
291 .cmds_start = 0x180140,
292 .ctrl_start = 0x180680,
293 .cdt = 0x180680 + 64,
294 .fifo_start = 0x185400,
295 .fifo_size = 0x001000,
296 .ptr1_reg = MO_DMA25_PTR1,
297 .ptr2_reg = MO_DMA25_PTR2,
298 .cnt1_reg = MO_DMA25_CNT1,
299 .cnt2_reg = MO_DMA25_CNT2,
300 },
301 [SRAM_CH26] = {
302 .name = "audio to",
303 .cmds_start = 0x180180,
304 .ctrl_start = 0x180720,
305 .cdt = 0x180680 + 64, /* same as audio IN */
306 .fifo_start = 0x185400, /* same as audio IN */
307 .fifo_size = 0x001000, /* same as audio IN */
308 .ptr1_reg = MO_DMA26_PTR1,
309 .ptr2_reg = MO_DMA26_PTR2,
310 .cnt1_reg = MO_DMA26_CNT1,
311 .cnt2_reg = MO_DMA26_CNT2,
312 },
313 [SRAM_CH28] = {
314 .name = "mpeg",
315 .cmds_start = 0x180200,
316 .ctrl_start = 0x1807C0,
317 .cdt = 0x1807C0 + 64,
318 .fifo_start = 0x186400,
319 .fifo_size = 0x001000,
320 .ptr1_reg = MO_DMA28_PTR1,
321 .ptr2_reg = MO_DMA28_PTR2,
322 .cnt1_reg = MO_DMA28_CNT1,
323 .cnt2_reg = MO_DMA28_CNT2,
324 },
325 [SRAM_CH27] = {
326 .name = "audio rds",
327 .cmds_start = 0x1801C0,
328 .ctrl_start = 0x180860,
329 .cdt = 0x180860 + 64,
330 .fifo_start = 0x187400,
331 .fifo_size = 0x000C00,
332 .ptr1_reg = MO_DMA27_PTR1,
333 .ptr2_reg = MO_DMA27_PTR2,
334 .cnt1_reg = MO_DMA27_CNT1,
335 .cnt2_reg = MO_DMA27_CNT2,
336 },
337 };
338 EXPORT_SYMBOL(cx88_sram_channels);
339
340 int cx88_sram_channel_setup(struct cx88_core *core,
341 const struct sram_channel *ch,
342 unsigned int bpl, u32 risc)
343 {
344 unsigned int i, lines;
345 u32 cdt;
346
347 bpl = (bpl + 7) & ~7; /* alignment */
348 cdt = ch->cdt;
349 lines = ch->fifo_size / bpl;
350 if (lines > 6)
351 lines = 6;
352 WARN_ON(lines < 2);
353
354 /* write CDT */
355 for (i = 0; i < lines; i++)
356 cx_write(cdt + 16 * i, ch->fifo_start + bpl * i);
357
358 /* write CMDS */
359 cx_write(ch->cmds_start + 0, risc);
360 cx_write(ch->cmds_start + 4, cdt);
361 cx_write(ch->cmds_start + 8, (lines * 16) >> 3);
362 cx_write(ch->cmds_start + 12, ch->ctrl_start);
363 cx_write(ch->cmds_start + 16, 64 >> 2);
364 for (i = 20; i < 64; i += 4)
365 cx_write(ch->cmds_start + i, 0);
366
367 /* fill registers */
368 cx_write(ch->ptr1_reg, ch->fifo_start);
369 cx_write(ch->ptr2_reg, cdt);
370 cx_write(ch->cnt1_reg, (bpl >> 3) - 1);
371 cx_write(ch->cnt2_reg, (lines * 16) >> 3);
372
373 dprintk(2, "sram setup %s: bpl=%d lines=%d\n", ch->name, bpl, lines);
374 return 0;
375 }
376 EXPORT_SYMBOL(cx88_sram_channel_setup);
377
378 /* ------------------------------------------------------------------ */
379 /* debug helper code */
380
381 static int cx88_risc_decode(u32 risc)
382 {
383 static const char * const 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 const 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 const char * const 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 dprintk0("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 pr_cont(" %s", bits[i]);
415 pr_cont(" count=%d ]\n", risc & 0xfff);
416 return incr[risc >> 28] ? incr[risc >> 28] : 1;
417 }
418
419 void cx88_sram_channel_dump(struct cx88_core *core,
420 const struct sram_channel *ch)
421 {
422 static const char * const name[] = {
423 "initial risc",
424 "cdt base",
425 "cdt size",
426 "iq base",
427 "iq size",
428 "risc pc",
429 "iq wr ptr",
430 "iq rd ptr",
431 "cdt current",
432 "pci target",
433 "line / byte",
434 };
435 u32 risc;
436 unsigned int i, j, n;
437
438 dprintk0("%s - dma channel status dump\n", ch->name);
439 for (i = 0; i < ARRAY_SIZE(name); i++)
440 dprintk0(" cmds: %-12s: 0x%08x\n",
441 name[i], cx_read(ch->cmds_start + 4 * i));
442 for (n = 1, i = 0; i < 4; i++) {
443 risc = cx_read(ch->cmds_start + 4 * (i + 11));
444 pr_cont(" risc%d: ", i);
445 if (--n)
446 pr_cont("0x%08x [ arg #%d ]\n", risc, n);
447 else
448 n = cx88_risc_decode(risc);
449 }
450 for (i = 0; i < 16; i += n) {
451 risc = cx_read(ch->ctrl_start + 4 * i);
452 dprintk0(" iq %x: ", i);
453 n = cx88_risc_decode(risc);
454 for (j = 1; j < n; j++) {
455 risc = cx_read(ch->ctrl_start + 4 * (i + j));
456 pr_cont(" iq %x: 0x%08x [ arg #%d ]\n",
457 i + j, risc, j);
458 }
459 }
460
461 dprintk0("fifo: 0x%08x -> 0x%x\n",
462 ch->fifo_start, ch->fifo_start + ch->fifo_size);
463 dprintk0("ctrl: 0x%08x -> 0x%x\n",
464 ch->ctrl_start, ch->ctrl_start + 6 * 16);
465 dprintk0(" ptr1_reg: 0x%08x\n", cx_read(ch->ptr1_reg));
466 dprintk0(" ptr2_reg: 0x%08x\n", cx_read(ch->ptr2_reg));
467 dprintk0(" cnt1_reg: 0x%08x\n", cx_read(ch->cnt1_reg));
468 dprintk0(" cnt2_reg: 0x%08x\n", cx_read(ch->cnt2_reg));
469 }
470 EXPORT_SYMBOL(cx88_sram_channel_dump);
471
472 static const char *cx88_pci_irqs[32] = {
473 "vid", "aud", "ts", "vip", "hst", "5", "6", "tm1",
474 "src_dma", "dst_dma", "risc_rd_err", "risc_wr_err",
475 "brdg_err", "src_dma_err", "dst_dma_err", "ipb_dma_err",
476 "i2c", "i2c_rack", "ir_smp", "gpio0", "gpio1"
477 };
478
479 void cx88_print_irqbits(const char *tag, const char *strings[],
480 int len, u32 bits, u32 mask)
481 {
482 unsigned int i;
483
484 dprintk0("%s [0x%x]", tag, bits);
485 for (i = 0; i < len; i++) {
486 if (!(bits & (1 << i)))
487 continue;
488 if (strings[i])
489 pr_cont(" %s", strings[i]);
490 else
491 pr_cont(" %d", i);
492 if (!(mask & (1 << i)))
493 continue;
494 pr_cont("*");
495 }
496 pr_cont("\n");
497 }
498 EXPORT_SYMBOL(cx88_print_irqbits);
499
500 /* ------------------------------------------------------------------ */
501
502 int cx88_core_irq(struct cx88_core *core, u32 status)
503 {
504 int handled = 0;
505
506 if (status & PCI_INT_IR_SMPINT) {
507 cx88_ir_irq(core);
508 handled++;
509 }
510 if (!handled)
511 cx88_print_irqbits("irq pci",
512 cx88_pci_irqs, ARRAY_SIZE(cx88_pci_irqs),
513 status, core->pci_irqmask);
514 return handled;
515 }
516 EXPORT_SYMBOL(cx88_core_irq);
517
518 void cx88_wakeup(struct cx88_core *core,
519 struct cx88_dmaqueue *q, u32 count)
520 {
521 struct cx88_buffer *buf;
522
523 buf = list_entry(q->active.next,
524 struct cx88_buffer, list);
525 buf->vb.vb2_buf.timestamp = ktime_get_ns();
526 buf->vb.field = core->field;
527 buf->vb.sequence = q->count++;
528 list_del(&buf->list);
529 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
530 }
531 EXPORT_SYMBOL(cx88_wakeup);
532
533 void cx88_shutdown(struct cx88_core *core)
534 {
535 /* disable RISC controller + IRQs */
536 cx_write(MO_DEV_CNTRL2, 0);
537
538 /* stop dma transfers */
539 cx_write(MO_VID_DMACNTRL, 0x0);
540 cx_write(MO_AUD_DMACNTRL, 0x0);
541 cx_write(MO_TS_DMACNTRL, 0x0);
542 cx_write(MO_VIP_DMACNTRL, 0x0);
543 cx_write(MO_GPHST_DMACNTRL, 0x0);
544
545 /* stop interrupts */
546 cx_write(MO_PCI_INTMSK, 0x0);
547 cx_write(MO_VID_INTMSK, 0x0);
548 cx_write(MO_AUD_INTMSK, 0x0);
549 cx_write(MO_TS_INTMSK, 0x0);
550 cx_write(MO_VIP_INTMSK, 0x0);
551 cx_write(MO_GPHST_INTMSK, 0x0);
552
553 /* stop capturing */
554 cx_write(VID_CAPTURE_CONTROL, 0);
555 }
556 EXPORT_SYMBOL(cx88_shutdown);
557
558 int cx88_reset(struct cx88_core *core)
559 {
560 dprintk(1, "");
561 cx88_shutdown(core);
562
563 /* clear irq status */
564 cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int
565 cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int
566 cx_write(MO_INT1_STAT, 0xFFFFFFFF); // Clear RISC int
567
568 /* wait a bit */
569 msleep(100);
570
571 /* init sram */
572 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH21],
573 720 * 4, 0);
574 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH22], 128, 0);
575 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH23], 128, 0);
576 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH24], 128, 0);
577 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], 128, 0);
578 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], 128, 0);
579 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
580 188 * 4, 0);
581 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27], 128, 0);
582
583 /* misc init ... */
584 cx_write(MO_INPUT_FORMAT, ((1 << 13) | // agc enable
585 (1 << 12) | // agc gain
586 (1 << 11) | // adaptibe agc
587 (0 << 10) | // chroma agc
588 (0 << 9) | // ckillen
589 (7)));
590
591 /* setup image format */
592 cx_andor(MO_COLOR_CTRL, 0x4000, 0x4000);
593
594 /* setup FIFO Thresholds */
595 cx_write(MO_PDMA_STHRSH, 0x0807);
596 cx_write(MO_PDMA_DTHRSH, 0x0807);
597
598 /* fixes flashing of image */
599 cx_write(MO_AGC_SYNC_TIP1, 0x0380000F);
600 cx_write(MO_AGC_BACK_VBI, 0x00E00555);
601
602 cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int
603 cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int
604 cx_write(MO_INT1_STAT, 0xFFFFFFFF); // Clear RISC int
605
606 /* Reset on-board parts */
607 cx_write(MO_SRST_IO, 0);
608 usleep_range(10000, 20000);
609 cx_write(MO_SRST_IO, 1);
610
611 return 0;
612 }
613 EXPORT_SYMBOL(cx88_reset);
614
615 /* ------------------------------------------------------------------ */
616
617 static inline unsigned int norm_swidth(v4l2_std_id norm)
618 {
619 return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 754 : 922;
620 }
621
622 static inline unsigned int norm_hdelay(v4l2_std_id norm)
623 {
624 return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 135 : 186;
625 }
626
627 static inline unsigned int norm_vdelay(v4l2_std_id norm)
628 {
629 return (norm & V4L2_STD_625_50) ? 0x24 : 0x18;
630 }
631
632 static inline unsigned int norm_fsc8(v4l2_std_id norm)
633 {
634 if (norm & V4L2_STD_PAL_M)
635 return 28604892; // 3.575611 MHz
636
637 if (norm & (V4L2_STD_PAL_Nc))
638 return 28656448; // 3.582056 MHz
639
640 if (norm & V4L2_STD_NTSC) // All NTSC/M and variants
641 return 28636360; // 3.57954545 MHz +/- 10 Hz
642
643 /*
644 * SECAM have also different sub carrier for chroma,
645 * but step_db and step_dr, at cx88_set_tvnorm already handles that.
646 *
647 * The same FSC applies to PAL/BGDKIH, PAL/60, NTSC/4.43 and PAL/N
648 */
649
650 return 35468950; // 4.43361875 MHz +/- 5 Hz
651 }
652
653 static inline unsigned int norm_htotal(v4l2_std_id norm)
654 {
655 unsigned int fsc4 = norm_fsc8(norm) / 2;
656
657 /* returns 4*FSC / vtotal / frames per seconds */
658 return (norm & V4L2_STD_625_50) ?
659 ((fsc4 + 312) / 625 + 12) / 25 :
660 ((fsc4 + 262) / 525 * 1001 + 15000) / 30000;
661 }
662
663 static inline unsigned int norm_vbipack(v4l2_std_id norm)
664 {
665 return (norm & V4L2_STD_625_50) ? 511 : 400;
666 }
667
668 int cx88_set_scale(struct cx88_core *core, unsigned int width,
669 unsigned int height, enum v4l2_field field)
670 {
671 unsigned int swidth = norm_swidth(core->tvnorm);
672 unsigned int sheight = norm_maxh(core->tvnorm);
673 u32 value;
674
675 dprintk(1, "set_scale: %dx%d [%s%s,%s]\n", width, height,
676 V4L2_FIELD_HAS_TOP(field) ? "T" : "",
677 V4L2_FIELD_HAS_BOTTOM(field) ? "B" : "",
678 v4l2_norm_to_name(core->tvnorm));
679 if (!V4L2_FIELD_HAS_BOTH(field))
680 height *= 2;
681
682 // recalc H delay and scale registers
683 value = (width * norm_hdelay(core->tvnorm)) / swidth;
684 value &= 0x3fe;
685 cx_write(MO_HDELAY_EVEN, value);
686 cx_write(MO_HDELAY_ODD, value);
687 dprintk(1, "set_scale: hdelay 0x%04x (width %d)\n", value, swidth);
688
689 value = (swidth * 4096 / width) - 4096;
690 cx_write(MO_HSCALE_EVEN, value);
691 cx_write(MO_HSCALE_ODD, value);
692 dprintk(1, "set_scale: hscale 0x%04x\n", value);
693
694 cx_write(MO_HACTIVE_EVEN, width);
695 cx_write(MO_HACTIVE_ODD, width);
696 dprintk(1, "set_scale: hactive 0x%04x\n", width);
697
698 // recalc V scale Register (delay is constant)
699 cx_write(MO_VDELAY_EVEN, norm_vdelay(core->tvnorm));
700 cx_write(MO_VDELAY_ODD, norm_vdelay(core->tvnorm));
701 dprintk(1, "set_scale: vdelay 0x%04x\n", norm_vdelay(core->tvnorm));
702
703 value = (0x10000 - (sheight * 512 / height - 512)) & 0x1fff;
704 cx_write(MO_VSCALE_EVEN, value);
705 cx_write(MO_VSCALE_ODD, value);
706 dprintk(1, "set_scale: vscale 0x%04x\n", value);
707
708 cx_write(MO_VACTIVE_EVEN, sheight);
709 cx_write(MO_VACTIVE_ODD, sheight);
710 dprintk(1, "set_scale: vactive 0x%04x\n", sheight);
711
712 // setup filters
713 value = 0;
714 value |= (1 << 19); // CFILT (default)
715 if (core->tvnorm & V4L2_STD_SECAM) {
716 value |= (1 << 15);
717 value |= (1 << 16);
718 }
719 if (INPUT(core->input).type == CX88_VMUX_SVIDEO)
720 value |= (1 << 13) | (1 << 5);
721 if (field == V4L2_FIELD_INTERLACED)
722 value |= (1 << 3); // VINT (interlaced vertical scaling)
723 if (width < 385)
724 value |= (1 << 0); // 3-tap interpolation
725 if (width < 193)
726 value |= (1 << 1); // 5-tap interpolation
727 if (nocomb)
728 value |= (3 << 5); // disable comb filter
729
730 cx_andor(MO_FILTER_EVEN, 0x7ffc7f, value); /* preserve PEAKEN, PSEL */
731 cx_andor(MO_FILTER_ODD, 0x7ffc7f, value);
732 dprintk(1, "set_scale: filter 0x%04x\n", value);
733
734 return 0;
735 }
736 EXPORT_SYMBOL(cx88_set_scale);
737
738 static const u32 xtal = 28636363;
739
740 static int set_pll(struct cx88_core *core, int prescale, u32 ofreq)
741 {
742 static const u32 pre[] = { 0, 0, 0, 3, 2, 1 };
743 u64 pll;
744 u32 reg;
745 int i;
746
747 if (prescale < 2)
748 prescale = 2;
749 if (prescale > 5)
750 prescale = 5;
751
752 pll = ofreq * 8 * prescale * (u64)(1 << 20);
753 do_div(pll, xtal);
754 reg = (pll & 0x3ffffff) | (pre[prescale] << 26);
755 if (((reg >> 20) & 0x3f) < 14) {
756 pr_err("pll out of range\n");
757 return -1;
758 }
759
760 dprintk(1, "set_pll: MO_PLL_REG 0x%08x [old=0x%08x,freq=%d]\n",
761 reg, cx_read(MO_PLL_REG), ofreq);
762 cx_write(MO_PLL_REG, reg);
763 for (i = 0; i < 100; i++) {
764 reg = cx_read(MO_DEVICE_STATUS);
765 if (reg & (1 << 2)) {
766 dprintk(1, "pll locked [pre=%d,ofreq=%d]\n",
767 prescale, ofreq);
768 return 0;
769 }
770 dprintk(1, "pll not locked yet, waiting ...\n");
771 usleep_range(10000, 20000);
772 }
773 dprintk(1, "pll NOT locked [pre=%d,ofreq=%d]\n", prescale, ofreq);
774 return -1;
775 }
776
777 int cx88_start_audio_dma(struct cx88_core *core)
778 {
779 /* constant 128 made buzz in analog Nicam-stereo for bigger fifo_size */
780 int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
781
782 int rds_bpl = cx88_sram_channels[SRAM_CH27].fifo_size / AUD_RDS_LINES;
783
784 /* If downstream RISC is enabled, bail out; ALSA is managing DMA */
785 if (cx_read(MO_AUD_DMACNTRL) & 0x10)
786 return 0;
787
788 /* setup fifo + format */
789 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], bpl, 0);
790 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], bpl, 0);
791 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27],
792 rds_bpl, 0);
793
794 cx_write(MO_AUDD_LNGTH, bpl); /* fifo bpl size */
795 cx_write(MO_AUDR_LNGTH, rds_bpl); /* fifo bpl size */
796
797 /* enable Up, Down and Audio RDS fifo */
798 cx_write(MO_AUD_DMACNTRL, 0x0007);
799
800 return 0;
801 }
802
803 int cx88_stop_audio_dma(struct cx88_core *core)
804 {
805 /* If downstream RISC is enabled, bail out; ALSA is managing DMA */
806 if (cx_read(MO_AUD_DMACNTRL) & 0x10)
807 return 0;
808
809 /* stop dma */
810 cx_write(MO_AUD_DMACNTRL, 0x0000);
811
812 return 0;
813 }
814
815 static int set_tvaudio(struct cx88_core *core)
816 {
817 v4l2_std_id norm = core->tvnorm;
818
819 if (INPUT(core->input).type != CX88_VMUX_TELEVISION &&
820 INPUT(core->input).type != CX88_VMUX_CABLE)
821 return 0;
822
823 if (V4L2_STD_PAL_BG & norm) {
824 core->tvaudio = WW_BG;
825
826 } else if (V4L2_STD_PAL_DK & norm) {
827 core->tvaudio = WW_DK;
828
829 } else if (V4L2_STD_PAL_I & norm) {
830 core->tvaudio = WW_I;
831
832 } else if (V4L2_STD_SECAM_L & norm) {
833 core->tvaudio = WW_L;
834
835 } else if ((V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H) &
836 norm) {
837 core->tvaudio = WW_BG;
838
839 } else if (V4L2_STD_SECAM_DK & norm) {
840 core->tvaudio = WW_DK;
841
842 } else if ((V4L2_STD_NTSC_M & norm) ||
843 (V4L2_STD_PAL_M & norm)) {
844 core->tvaudio = WW_BTSC;
845
846 } else if (V4L2_STD_NTSC_M_JP & norm) {
847 core->tvaudio = WW_EIAJ;
848
849 } else {
850 pr_info("tvaudio support needs work for this tv norm [%s], sorry\n",
851 v4l2_norm_to_name(core->tvnorm));
852 core->tvaudio = WW_NONE;
853 return 0;
854 }
855
856 cx_andor(MO_AFECFG_IO, 0x1f, 0x0);
857 cx88_set_tvaudio(core);
858 /* cx88_set_stereo(dev,V4L2_TUNER_MODE_STEREO); */
859
860 /*
861 * This should be needed only on cx88-alsa. It seems that some cx88 chips have
862 * bugs and does require DMA enabled for it to work.
863 */
864 cx88_start_audio_dma(core);
865 return 0;
866 }
867
868 int cx88_set_tvnorm(struct cx88_core *core, v4l2_std_id norm)
869 {
870 u32 fsc8;
871 u32 adc_clock;
872 u32 vdec_clock;
873 u32 step_db, step_dr;
874 u64 tmp64;
875 u32 bdelay, agcdelay, htotal;
876 u32 cxiformat, cxoformat;
877
878 if (norm == core->tvnorm)
879 return 0;
880 if (core->v4ldev && (vb2_is_busy(&core->v4ldev->vb2_vidq) ||
881 vb2_is_busy(&core->v4ldev->vb2_vbiq)))
882 return -EBUSY;
883 if (core->dvbdev && vb2_is_busy(&core->dvbdev->vb2_mpegq))
884 return -EBUSY;
885 core->tvnorm = norm;
886 fsc8 = norm_fsc8(norm);
887 adc_clock = xtal;
888 vdec_clock = fsc8;
889 step_db = fsc8;
890 step_dr = fsc8;
891
892 if (norm & V4L2_STD_NTSC_M_JP) {
893 cxiformat = VideoFormatNTSCJapan;
894 cxoformat = 0x181f0008;
895 } else if (norm & V4L2_STD_NTSC_443) {
896 cxiformat = VideoFormatNTSC443;
897 cxoformat = 0x181f0008;
898 } else if (norm & V4L2_STD_PAL_M) {
899 cxiformat = VideoFormatPALM;
900 cxoformat = 0x1c1f0008;
901 } else if (norm & V4L2_STD_PAL_N) {
902 cxiformat = VideoFormatPALN;
903 cxoformat = 0x1c1f0008;
904 } else if (norm & V4L2_STD_PAL_Nc) {
905 cxiformat = VideoFormatPALNC;
906 cxoformat = 0x1c1f0008;
907 } else if (norm & V4L2_STD_PAL_60) {
908 cxiformat = VideoFormatPAL60;
909 cxoformat = 0x181f0008;
910 } else if (norm & V4L2_STD_NTSC) {
911 cxiformat = VideoFormatNTSC;
912 cxoformat = 0x181f0008;
913 } else if (norm & V4L2_STD_SECAM) {
914 step_db = 4250000 * 8;
915 step_dr = 4406250 * 8;
916
917 cxiformat = VideoFormatSECAM;
918 cxoformat = 0x181f0008;
919 } else { /* PAL */
920 cxiformat = VideoFormatPAL;
921 cxoformat = 0x181f0008;
922 }
923
924 dprintk(1, "set_tvnorm: \"%s\" fsc8=%d adc=%d vdec=%d db/dr=%d/%d\n",
925 v4l2_norm_to_name(core->tvnorm), fsc8, adc_clock, vdec_clock,
926 step_db, step_dr);
927 set_pll(core, 2, vdec_clock);
928
929 dprintk(1, "set_tvnorm: MO_INPUT_FORMAT 0x%08x [old=0x%08x]\n",
930 cxiformat, cx_read(MO_INPUT_FORMAT) & 0x0f);
931 /*
932 * Chroma AGC must be disabled if SECAM is used, we enable it
933 * by default on PAL and NTSC
934 */
935 cx_andor(MO_INPUT_FORMAT, 0x40f,
936 norm & V4L2_STD_SECAM ? cxiformat : cxiformat | 0x400);
937
938 // FIXME: as-is from DScaler
939 dprintk(1, "set_tvnorm: MO_OUTPUT_FORMAT 0x%08x [old=0x%08x]\n",
940 cxoformat, cx_read(MO_OUTPUT_FORMAT));
941 cx_write(MO_OUTPUT_FORMAT, cxoformat);
942
943 // MO_SCONV_REG = adc clock / video dec clock * 2^17
944 tmp64 = adc_clock * (u64)(1 << 17);
945 do_div(tmp64, vdec_clock);
946 dprintk(1, "set_tvnorm: MO_SCONV_REG 0x%08x [old=0x%08x]\n",
947 (u32)tmp64, cx_read(MO_SCONV_REG));
948 cx_write(MO_SCONV_REG, (u32)tmp64);
949
950 // MO_SUB_STEP = 8 * fsc / video dec clock * 2^22
951 tmp64 = step_db * (u64)(1 << 22);
952 do_div(tmp64, vdec_clock);
953 dprintk(1, "set_tvnorm: MO_SUB_STEP 0x%08x [old=0x%08x]\n",
954 (u32)tmp64, cx_read(MO_SUB_STEP));
955 cx_write(MO_SUB_STEP, (u32)tmp64);
956
957 // MO_SUB_STEP_DR = 8 * 4406250 / video dec clock * 2^22
958 tmp64 = step_dr * (u64)(1 << 22);
959 do_div(tmp64, vdec_clock);
960 dprintk(1, "set_tvnorm: MO_SUB_STEP_DR 0x%08x [old=0x%08x]\n",
961 (u32)tmp64, cx_read(MO_SUB_STEP_DR));
962 cx_write(MO_SUB_STEP_DR, (u32)tmp64);
963
964 // bdelay + agcdelay
965 bdelay = vdec_clock * 65 / 20000000 + 21;
966 agcdelay = vdec_clock * 68 / 20000000 + 15;
967 dprintk(1,
968 "set_tvnorm: MO_AGC_BURST 0x%08x [old=0x%08x,bdelay=%d,agcdelay=%d]\n",
969 (bdelay << 8) | agcdelay, cx_read(MO_AGC_BURST),
970 bdelay, agcdelay);
971 cx_write(MO_AGC_BURST, (bdelay << 8) | agcdelay);
972
973 // htotal
974 tmp64 = norm_htotal(norm) * (u64)vdec_clock;
975 do_div(tmp64, fsc8);
976 htotal = (u32)tmp64;
977 dprintk(1,
978 "set_tvnorm: MO_HTOTAL 0x%08x [old=0x%08x,htotal=%d]\n",
979 htotal, cx_read(MO_HTOTAL), (u32)tmp64);
980 cx_andor(MO_HTOTAL, 0x07ff, htotal);
981
982 // vbi stuff, set vbi offset to 10 (for 20 Clk*2 pixels), this makes
983 // the effective vbi offset ~244 samples, the same as the Bt8x8
984 cx_write(MO_VBI_PACKET, (10 << 11) | norm_vbipack(norm));
985
986 // this is needed as well to set all tvnorm parameter
987 cx88_set_scale(core, 320, 240, V4L2_FIELD_INTERLACED);
988
989 // audio
990 set_tvaudio(core);
991
992 // tell i2c chips
993 call_all(core, video, s_std, norm);
994
995 /*
996 * The chroma_agc control should be inaccessible
997 * if the video format is SECAM
998 */
999 v4l2_ctrl_grab(core->chroma_agc, cxiformat == VideoFormatSECAM);
1000
1001 // done
1002 return 0;
1003 }
1004 EXPORT_SYMBOL(cx88_set_tvnorm);
1005
1006 /* ------------------------------------------------------------------ */
1007
1008 void cx88_vdev_init(struct cx88_core *core,
1009 struct pci_dev *pci,
1010 struct video_device *vfd,
1011 const struct video_device *template_,
1012 const char *type)
1013 {
1014 *vfd = *template_;
1015
1016 /*
1017 * The dev pointer of v4l2_device is NULL, instead we set the
1018 * video_device dev_parent pointer to the correct PCI bus device.
1019 * This driver is a rare example where there is one v4l2_device,
1020 * but the video nodes have different parent (PCI) devices.
1021 */
1022 vfd->v4l2_dev = &core->v4l2_dev;
1023 vfd->dev_parent = &pci->dev;
1024 vfd->release = video_device_release_empty;
1025 vfd->lock = &core->lock;
1026 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
1027 core->name, type, core->board.name);
1028 }
1029 EXPORT_SYMBOL(cx88_vdev_init);
1030
1031 struct cx88_core *cx88_core_get(struct pci_dev *pci)
1032 {
1033 struct cx88_core *core;
1034
1035 mutex_lock(&devlist);
1036 list_for_each_entry(core, &cx88_devlist, devlist) {
1037 if (pci->bus->number != core->pci_bus)
1038 continue;
1039 if (PCI_SLOT(pci->devfn) != core->pci_slot)
1040 continue;
1041
1042 if (cx88_get_resources(core, pci) != 0) {
1043 mutex_unlock(&devlist);
1044 return NULL;
1045 }
1046 refcount_inc(&core->refcount);
1047 mutex_unlock(&devlist);
1048 return core;
1049 }
1050
1051 core = cx88_core_create(pci, cx88_devcount);
1052 if (core) {
1053 cx88_devcount++;
1054 list_add_tail(&core->devlist, &cx88_devlist);
1055 }
1056
1057 mutex_unlock(&devlist);
1058 return core;
1059 }
1060 EXPORT_SYMBOL(cx88_core_get);
1061
1062 void cx88_core_put(struct cx88_core *core, struct pci_dev *pci)
1063 {
1064 release_mem_region(pci_resource_start(pci, 0),
1065 pci_resource_len(pci, 0));
1066
1067 if (!refcount_dec_and_test(&core->refcount))
1068 return;
1069
1070 mutex_lock(&devlist);
1071 cx88_ir_fini(core);
1072 if (core->i2c_rc == 0) {
1073 i2c_unregister_device(core->i2c_rtc);
1074 i2c_del_adapter(&core->i2c_adap);
1075 }
1076 list_del(&core->devlist);
1077 iounmap(core->lmmio);
1078 cx88_devcount--;
1079 mutex_unlock(&devlist);
1080 v4l2_ctrl_handler_free(&core->video_hdl);
1081 v4l2_ctrl_handler_free(&core->audio_hdl);
1082 v4l2_device_unregister(&core->v4l2_dev);
1083 kfree(core);
1084 }
1085 EXPORT_SYMBOL(cx88_core_put);
Linux with added FPC-III support