?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
The LDT fixes in particular fix some potentially random strange behaviour.
[davej-history.git] / drivers / media / video / bttv-driver.c
blob7ce4a4cf89393b2754c255964fd95491a0a9effa
1 /*
2 bttv - Bt848 frame grabber driver
3
4 Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
5 & Marcus Metzler (mocm@thp.uni-koeln.de)
6 (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23 #include <linux/version.h>
24 #include <linux/module.h>
25 #include <linux/delay.h>
26 #include <linux/errno.h>
27 #include <linux/fs.h>
28 #include <linux/kernel.h>
29 #include <linux/major.h>
30 #include <linux/malloc.h>
31 #include <linux/mm.h>
32 #include <linux/poll.h>
33 #include <linux/pci.h>
34 #include <linux/signal.h>
35 #include <asm/io.h>
36 #include <linux/ioport.h>
37 #include <asm/pgtable.h>
38 #include <asm/page.h>
39 #include <linux/sched.h>
40 #include <asm/segment.h>
41 #include <linux/types.h>
42 #include <linux/wrapper.h>
43 #include <linux/interrupt.h>
44 #include <linux/kmod.h>
45 #include <linux/vmalloc.h>
46 #include <linux/init.h>
47
48 #include "bttvp.h"
49 #include "tuner.h"
50
51 #define DEBUG(x) /* Debug driver */
52 #define MIN(a,b) (((a)>(b))?(b):(a))
53 #define MAX(a,b) (((a)>(b))?(a):(b))
54
55 static void bt848_set_risc_jmps(struct bttv *btv, int state);
56
57 int bttv_num; /* number of Bt848s in use */
58 struct bttv bttvs[BTTV_MAX];
59
60 /* configuration variables */
61 #if defined(__sparc__) || defined(__powerpc__) || defined(__hppa__)
62 static unsigned int bigendian=1;
63 #else
64 static unsigned int bigendian=0;
65 #endif
66 static unsigned int radio[BTTV_MAX];
67 static unsigned int fieldnr = 0;
68 static unsigned int irq_debug = 0;
69 static unsigned int gbuffers = 2;
70 static unsigned int gbufsize = BTTV_MAX_FBUF;
71 static unsigned int combfilter = 0;
72 unsigned int bttv_debug = 0;
73 unsigned int bttv_verbose = 1;
74 unsigned int bttv_gpio = 0;
75
76 /* insmod options */
77 MODULE_PARM(radio,"1-4i");
78 MODULE_PARM_DESC(radio,"The TV card supports radio, default is 0 (no)");
79 MODULE_PARM(bigendian,"i");
80 MODULE_PARM_DESC(bigendian,"byte order of the framebuffer, default is native endian");
81 MODULE_PARM(fieldnr,"i");
82 MODULE_PARM_DESC(fieldnr,"count fields, default is 0 (no)");
83 MODULE_PARM(bttv_verbose,"i");
84 MODULE_PARM_DESC(bttv_verbose,"verbose startup messages, default is 1 (yes)");
85 MODULE_PARM(bttv_gpio,"i");
86 MODULE_PARM_DESC(bttv_gpio,"log gpio changes, default is 0 (no)");
87 MODULE_PARM(bttv_debug,"i");
88 MODULE_PARM_DESC(bttv_debug,"debug messages, default is 0 (no)");
89 MODULE_PARM(irq_debug,"i");
90 MODULE_PARM_DESC(irq_debug,"irq handler debug messages, default is 0 (no)");
91 MODULE_PARM(gbuffers,"i");
92 MODULE_PARM_DESC(gbuffers,"number of capture buffers, default is 2 (64 max)");
93 MODULE_PARM(gbufsize,"i");
94 MODULE_PARM_DESC(gbufsize,"size of the capture buffers, default is 0x208000");
95 MODULE_PARM(combfilter,"i");
96
97 MODULE_DESCRIPTION("bttv - v4l driver module for bt848/878 based cards");
98 MODULE_AUTHOR("Ralph Metzler & Marcus Metzler & Gerd Knorr");
99
100 /* kernel args */
101 #ifndef MODULE
102 static int __init p_radio(char *str) { return bttv_parse(str,BTTV_MAX,radio); }
103 __setup("bttv.radio=", p_radio);
104 #endif
105
106 #define I2C_TIMING (0x7<<4)
107 #define I2C_DELAY 10
108
109 #define I2C_SET(CTRL,DATA) \
110 { btwrite((CTRL<<1)|(DATA), BT848_I2C); udelay(I2C_DELAY); }
111 #define I2C_GET() (btread(BT848_I2C)&1)
112
113 #define BURSTOFFSET 76
114 #define BTTV_ERRORS 5
115
116
117 /*******************************/
118 /* Memory management functions */
119 /*******************************/
120
121 #define MDEBUG(x) do { } while(0) /* Debug memory management */
122
123 /* [DaveM] I've recoded most of this so that:
124 * 1) It's easier to tell what is happening
125 * 2) It's more portable, especially for translating things
126 * out of vmalloc mapped areas in the kernel.
127 * 3) Less unnecessary translations happen.
128 *
129 * The code used to assume that the kernel vmalloc mappings
130 * existed in the page tables of every process, this is simply
131 * not guarenteed. We now use pgd_offset_k which is the
132 * defined way to get at the kernel page tables.
133 */
134
135 /* Given PGD from the address space's page table, return the kernel
136 * virtual mapping of the physical memory mapped at ADR.
137 */
138 static inline unsigned long uvirt_to_kva(pgd_t *pgd, unsigned long adr)
139 {
140 unsigned long ret = 0UL;
141 pmd_t *pmd;
142 pte_t *ptep, pte;
143
144 if (!pgd_none(*pgd)) {
145 pmd = pmd_offset(pgd, adr);
146 if (!pmd_none(*pmd)) {
147 ptep = pte_offset(pmd, adr);
148 pte = *ptep;
149 if(pte_present(pte)) {
150 ret = (unsigned long) page_address(pte_page(pte));
151 ret |= (adr & (PAGE_SIZE - 1));
152
153 }
154 }
155 }
156 MDEBUG(printk("uv2kva(%lx-->%lx)", adr, ret));
157 return ret;
158 }
159
160 static inline unsigned long uvirt_to_bus(unsigned long adr)
161 {
162 unsigned long kva, ret;
163
164 kva = uvirt_to_kva(pgd_offset(current->mm, adr), adr);
165 ret = virt_to_bus((void *)kva);
166 MDEBUG(printk("uv2b(%lx-->%lx)", adr, ret));
167 return ret;
168 }
169
170 static inline unsigned long kvirt_to_bus(unsigned long adr)
171 {
172 unsigned long va, kva, ret;
173
174 va = VMALLOC_VMADDR(adr);
175 kva = uvirt_to_kva(pgd_offset_k(va), va);
176 ret = virt_to_bus((void *)kva);
177 MDEBUG(printk("kv2b(%lx-->%lx)", adr, ret));
178 return ret;
179 }
180
181 /* Here we want the physical address of the memory.
182 * This is used when initializing the contents of the
183 * area and marking the pages as reserved.
184 */
185 static inline unsigned long kvirt_to_pa(unsigned long adr)
186 {
187 unsigned long va, kva, ret;
188
189 va = VMALLOC_VMADDR(adr);
190 kva = uvirt_to_kva(pgd_offset_k(va), va);
191 ret = __pa(kva);
192 MDEBUG(printk("kv2pa(%lx-->%lx)", adr, ret));
193 return ret;
194 }
195
196 static void * rvmalloc(signed long size)
197 {
198 void * mem;
199 unsigned long adr, page;
200
201 mem=vmalloc_32(size);
202 if (mem)
203 {
204 memset(mem, 0, size); /* Clear the ram out, no junk to the user */
205 adr=(unsigned long) mem;
206 while (size > 0)
207 {
208 page = kvirt_to_pa(adr);
209 mem_map_reserve(virt_to_page(__va(page)));
210 adr+=PAGE_SIZE;
211 size-=PAGE_SIZE;
212 }
213 }
214 return mem;
215 }
216
217 static void rvfree(void * mem, signed long size)
218 {
219 unsigned long adr, page;
220
221 if (mem)
222 {
223 adr=(unsigned long) mem;
224 while (size > 0)
225 {
226 page = kvirt_to_pa(adr);
227 mem_map_unreserve(virt_to_page(__va(page)));
228 adr+=PAGE_SIZE;
229 size-=PAGE_SIZE;
230 }
231 vfree(mem);
232 }
233 }
234
235
236
237 /*
238 * Create the giant waste of buffer space we need for now
239 * until we get DMA to user space sorted out (probably 2.3.x)
240 *
241 * We only create this as and when someone uses mmap
242 */
243
244 static int fbuffer_alloc(struct bttv *btv)
245 {
246 if(!btv->fbuffer)
247 btv->fbuffer=(unsigned char *) rvmalloc(gbuffers*gbufsize);
248 else
249 printk(KERN_ERR "bttv%d: Double alloc of fbuffer!\n",
250 btv->nr);
251 if(!btv->fbuffer)
252 return -ENOBUFS;
253 return 0;
254 }
255
256
257 /* init + register i2c algo-bit adapter */
258 static int __devinit init_bttv_i2c(struct bttv *btv)
259 {
260 memcpy(&btv->i2c_adap, &bttv_i2c_adap_template, sizeof(struct i2c_adapter));
261 memcpy(&btv->i2c_algo, &bttv_i2c_algo_template, sizeof(struct i2c_algo_bit_data));
262 memcpy(&btv->i2c_client, &bttv_i2c_client_template, sizeof(struct i2c_client));
263
264 sprintf(btv->i2c_adap.name+strlen(btv->i2c_adap.name),
265 " #%d", btv->nr);
266 btv->i2c_algo.data = btv;
267 btv->i2c_adap.data = btv;
268 btv->i2c_adap.algo_data = &btv->i2c_algo;
269 btv->i2c_client.adapter = &btv->i2c_adap;
270
271 bttv_bit_setscl(btv,1);
272 bttv_bit_setsda(btv,1);
273
274 btv->i2c_rc = i2c_bit_add_bus(&btv->i2c_adap);
275 return btv->i2c_rc;
276 }
277
278
279 /* ----------------------------------------------------------------------- */
280
281 void bttv_gpio_tracking(struct bttv *btv, char *comment)
282 {
283 unsigned int outbits, data;
284 outbits = btread(BT848_GPIO_OUT_EN);
285 data = btread(BT848_GPIO_DATA);
286 printk(KERN_DEBUG "bttv%d: gpio: en=%08x, out=%08x in=%08x [%s]\n",
287 btv->nr,outbits,data & outbits, data & ~outbits, comment);
288 }
289
290 static char *audio_modes[] = { "audio: tuner", "audio: radio", "audio: extern",
291 "audio: intern", "audio: off" };
292
293 static void audio(struct bttv *btv, int mode, int no_irq_context)
294 {
295 btaor(bttv_tvcards[btv->type].gpiomask, ~bttv_tvcards[btv->type].gpiomask,
296 BT848_GPIO_OUT_EN);
297
298 switch (mode)
299 {
300 case AUDIO_MUTE:
301 btv->audio|=AUDIO_MUTE;
302 break;
303 case AUDIO_UNMUTE:
304 btv->audio&=~AUDIO_MUTE;
305 mode=btv->audio;
306 break;
307 case AUDIO_OFF:
308 mode=AUDIO_OFF;
309 break;
310 case AUDIO_ON:
311 mode=btv->audio;
312 break;
313 default:
314 btv->audio&=AUDIO_MUTE;
315 btv->audio|=mode;
316 break;
317 }
318 /* if audio mute or not in H-lock, turn audio off */
319 if ((btv->audio&AUDIO_MUTE))
320 mode=AUDIO_OFF;
321 if ((mode == AUDIO_TUNER) && (btv->radio))
322 mode = AUDIO_RADIO;
323 btaor(bttv_tvcards[btv->type].audiomux[mode],
324 ~bttv_tvcards[btv->type].gpiomask, BT848_GPIO_DATA);
325 if (bttv_gpio)
326 bttv_gpio_tracking(btv,audio_modes[mode]);
327 if (no_irq_context)
328 bttv_call_i2c_clients(btv,AUDC_SET_INPUT,&(mode));
329 }
330
331
332 extern inline void bt848_dma(struct bttv *btv, uint state)
333 {
334 if (state)
335 btor(3, BT848_GPIO_DMA_CTL);
336 else
337 btand(~3, BT848_GPIO_DMA_CTL);
338 }
339
340
341 /* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC*/
342
343 /* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C
344 PLL_X = Reference pre-divider (0=1, 1=2)
345 PLL_C = Post divider (0=6, 1=4)
346 PLL_I = Integer input
347 PLL_F = Fractional input
348
349 F_input = 28.636363 MHz:
350 PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0
351 */
352
353 static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout)
354 {
355 unsigned char fl, fh, fi;
356
357 /* prevent overflows */
358 fin/=4;
359 fout/=4;
360
361 fout*=12;
362 fi=fout/fin;
363
364 fout=(fout%fin)*256;
365 fh=fout/fin;
366
367 fout=(fout%fin)*256;
368 fl=fout/fin;
369
370 /*printk("0x%02x 0x%02x 0x%02x\n", fi, fh, fl);*/
371 btwrite(fl, BT848_PLL_F_LO);
372 btwrite(fh, BT848_PLL_F_HI);
373 btwrite(fi|BT848_PLL_X, BT848_PLL_XCI);
374 }
375
376 static int set_pll(struct bttv *btv)
377 {
378 int i;
379 unsigned long tv;
380
381 if (!btv->pll.pll_crystal)
382 return 0;
383
384 if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) {
385 /* no PLL needed */
386 if (btv->pll.pll_current == 0) {
387 /* printk ("bttv%d: PLL: is off\n",btv->nr); */
388 return 0;
389 }
390 if (bttv_verbose)
391 printk ("bttv%d: PLL: switching off\n",btv->nr);
392 btwrite(0x00,BT848_TGCTRL);
393 btwrite(0x00,BT848_PLL_XCI);
394 btv->pll.pll_current = 0;
395 return 0;
396 }
397
398 if (btv->pll.pll_ofreq == btv->pll.pll_current) {
399 /* printk("bttv%d: PLL: no change required\n",btv->nr); */
400 return 1;
401 }
402
403 if (bttv_verbose)
404 printk("bttv%d: PLL: %d => %d ... ",btv->nr,
405 btv->pll.pll_ifreq, btv->pll.pll_ofreq);
406
407 set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);
408
409 /* Let other people run while the PLL stabilizes */
410 tv=jiffies+HZ/10; /* .1 seconds */
411 do
412 {
413 schedule();
414 }
415 while(time_before(jiffies,tv));
416
417 for (i=0; i<100; i++)
418 {
419 if ((btread(BT848_DSTATUS)&BT848_DSTATUS_PLOCK))
420 btwrite(0,BT848_DSTATUS);
421 else
422 {
423 btwrite(0x08,BT848_TGCTRL);
424 btv->pll.pll_current = btv->pll.pll_ofreq;
425 if (bttv_verbose)
426 printk("ok\n");
427 return 1;
428 }
429 mdelay(10);
430 }
431 btv->pll.pll_current = 0;
432 if (bttv_verbose)
433 printk("oops\n");
434 return -1;
435 }
436
437 static void bt848_muxsel(struct bttv *btv, unsigned int input)
438 {
439
440 #if 0 /* seems no card uses this ... */
441 btaor(bttv_tvcards[btv->type].gpiomask2,~bttv_tvcards[btv->type].gpiomask2,
442 BT848_GPIO_OUT_EN);
443 #endif
444
445 /* This seems to get rid of some synchronization problems */
446 btand(~(3<<5), BT848_IFORM);
447 mdelay(10);
448
449 input %= bttv_tvcards[btv->type].video_inputs;
450 if (input==bttv_tvcards[btv->type].svhs)
451 {
452 btor(BT848_CONTROL_COMP, BT848_E_CONTROL);
453 btor(BT848_CONTROL_COMP, BT848_O_CONTROL);
454 }
455 else
456 {
457 btand(~BT848_CONTROL_COMP, BT848_E_CONTROL);
458 btand(~BT848_CONTROL_COMP, BT848_O_CONTROL);
459 }
460 btaor((bttv_tvcards[btv->type].muxsel[input&7]&3)<<5, ~(3<<5), BT848_IFORM);
461 audio(btv, (input!=bttv_tvcards[btv->type].tuner) ?
462 AUDIO_EXTERN : AUDIO_TUNER, 1);
463
464 #if 0 /* seems no card uses this ... */
465 btaor(bttv_tvcards[btv->type].muxsel[input]>>4,
466 ~bttv_tvcards[btv->type].gpiomask2, BT848_GPIO_DATA);
467 if (bttv_gpio)
468 bttv_gpio_tracking(btv,"muxsel");
469 #endif
470 }
471
472
473 struct tvnorm
474 {
475 u32 Fsc;
476 u16 swidth, sheight; /* scaled standard width, height */
477 u16 totalwidth;
478 u8 adelay, bdelay, iform;
479 u32 scaledtwidth;
480 u16 hdelayx1, hactivex1;
481 u16 vdelay;
482 u8 vbipack;
483 };
484
485 static struct tvnorm tvnorms[] = {
486 /* PAL-BDGHI */
487 /* max. active video is actually 922, but 924 is divisible by 4 and 3! */
488 /* actually, max active PAL with HSCALE=0 is 948, NTSC is 768 - nil */
489 { 35468950,
490 924, 576, 1135, 0x7f, 0x72, (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
491 1135, 186, 924, 0x20, 255},
492
493 /* NTSC */
494 { 28636363,
495 768, 480, 910, 0x68, 0x5d, (BT848_IFORM_NTSC|BT848_IFORM_XT0),
496 910, 128, 910, 0x1a, 144},
497 #if 0
498 /* SECAM EAST */
499 { 35468950,
500 768, 576, 1135, 0x7f, 0xb0, (BT848_IFORM_SECAM|BT848_IFORM_XT1),
501 944, 186, 922, 0x20, 255},
502 #else
503 /* SECAM L */
504 { 35468950,
505 924, 576, 1135, 0x7f, 0xb0, (BT848_IFORM_SECAM|BT848_IFORM_XT1),
506 1135, 186, 922, 0x20, 255},
507 #endif
508 /* PAL-NC */
509 { 28636363,
510 640, 576, 910, 0x68, 0x5d, (BT848_IFORM_PAL_NC|BT848_IFORM_XT0),
511 780, 130, 734, 0x1a, 144},
512 /* PAL-M */
513 { 28636363,
514 640, 480, 910, 0x68, 0x5d, (BT848_IFORM_PAL_M|BT848_IFORM_XT0),
515 780, 135, 754, 0x1a, 144},
516 /* PAL-N */
517 { 35468950,
518 768, 576, 1135, 0x7f, 0x72, (BT848_IFORM_PAL_N|BT848_IFORM_XT1),
519 944, 186, 922, 0x20, 144},
520 /* NTSC-Japan */
521 { 28636363,
522 640, 480, 910, 0x68, 0x5d, (BT848_IFORM_NTSC_J|BT848_IFORM_XT0),
523 780, 135, 754, 0x16, 144},
524 };
525 #define TVNORMS (sizeof(tvnorms)/sizeof(tvnorm))
526 #define VBI_SPL 2044
527
528 /* RISC command to write one VBI data line */
529 #define VBI_RISC BT848_RISC_WRITE|VBI_SPL|BT848_RISC_EOL|BT848_RISC_SOL
530
531 static void make_vbitab(struct bttv *btv)
532 {
533 int i;
534 unsigned int *po=(unsigned int *) btv->vbi_odd;
535 unsigned int *pe=(unsigned int *) btv->vbi_even;
536
537 if (bttv_debug > 1)
538 printk("bttv%d: vbi1: po=%08lx pe=%08lx\n",
539 btv->nr,virt_to_bus(po), virt_to_bus(pe));
540
541 *(po++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); *(po++)=0;
542 for (i=0; i<16; i++)
543 {
544 *(po++)=cpu_to_le32(VBI_RISC);
545 *(po++)=cpu_to_le32(kvirt_to_bus((unsigned long)btv->vbibuf+i*2048));
546 }
547 *(po++)=cpu_to_le32(BT848_RISC_JUMP);
548 *(po++)=cpu_to_le32(virt_to_bus(btv->risc_jmp+4));
549
550 *(pe++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1); *(pe++)=0;
551 for (i=16; i<32; i++)
552 {
553 *(pe++)=cpu_to_le32(VBI_RISC);
554 *(pe++)=cpu_to_le32(kvirt_to_bus((unsigned long)btv->vbibuf+i*2048));
555 }
556 *(pe++)=cpu_to_le32(BT848_RISC_JUMP|BT848_RISC_IRQ|(0x01<<16));
557 *(pe++)=cpu_to_le32(virt_to_bus(btv->risc_jmp+10));
558
559 if (bttv_debug > 1)
560 printk("bttv%d: vbi2: po=%08lx pe=%08lx\n",
561 btv->nr,virt_to_bus(po), virt_to_bus(pe));
562 }
563
564 static int fmtbppx2[16] = {
565 8, 6, 4, 4, 4, 3, 2, 2, 4, 3, 0, 0, 0, 0, 2, 0
566 };
567
568 static int palette2fmt[] = {
569 0,
570 BT848_COLOR_FMT_Y8,
571 BT848_COLOR_FMT_RGB8,
572 BT848_COLOR_FMT_RGB16,
573 BT848_COLOR_FMT_RGB24,
574 BT848_COLOR_FMT_RGB32,
575 BT848_COLOR_FMT_RGB15,
576 BT848_COLOR_FMT_YUY2,
577 BT848_COLOR_FMT_BtYUV,
578 -1,
579 -1,
580 -1,
581 BT848_COLOR_FMT_RAW,
582 BT848_COLOR_FMT_YCrCb422,
583 BT848_COLOR_FMT_YCrCb411,
584 BT848_COLOR_FMT_YCrCb422,
585 BT848_COLOR_FMT_YCrCb411,
586 };
587 #define PALETTEFMT_MAX (sizeof(palette2fmt)/sizeof(int))
588
589 static int make_rawrisctab(struct bttv *btv, unsigned int *ro,
590 unsigned int *re, unsigned int *vbuf)
591 {
592 unsigned long line;
593 unsigned long bpl=1024; /* bytes per line */
594 unsigned long vadr=(unsigned long) vbuf;
595
596 *(ro++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
597 *(ro++)=cpu_to_le32(0);
598 *(re++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
599 *(re++)=cpu_to_le32(0);
600
601 /* In PAL 650 blocks of 256 DWORDs are sampled, but only if VDELAY
602 is 2 and without separate VBI grabbing.
603 We'll have to handle this inside the IRQ handler ... */
604
605 for (line=0; line < 640; line++)
606 {
607 *(ro++)=cpu_to_le32(BT848_RISC_WRITE|bpl|BT848_RISC_SOL|BT848_RISC_EOL);
608 *(ro++)=cpu_to_le32(kvirt_to_bus(vadr));
609 *(re++)=cpu_to_le32(BT848_RISC_WRITE|bpl|BT848_RISC_SOL|BT848_RISC_EOL);
610 *(re++)=cpu_to_le32(kvirt_to_bus(vadr+gbufsize/2));
611 vadr+=bpl;
612 }
613
614 *(ro++)=cpu_to_le32(BT848_RISC_JUMP);
615 *(ro++)=cpu_to_le32(btv->bus_vbi_even);
616 *(re++)=cpu_to_le32(BT848_RISC_JUMP|BT848_RISC_IRQ|(2<<16));
617 *(re++)=cpu_to_le32(btv->bus_vbi_odd);
618
619 return 0;
620 }
621
622 static int make_prisctab(struct bttv *btv, unsigned int *ro,
623 unsigned int *re,
624 unsigned int *vbuf, unsigned short width,
625 unsigned short height, unsigned short fmt)
626 {
627 unsigned long line, lmask;
628 unsigned long bl, blcr, blcb, rcmd;
629 unsigned long todo;
630 unsigned int **rp;
631 int inter;
632 unsigned long cbadr, cradr;
633 unsigned long vadr=(unsigned long) vbuf;
634 int shift, csize;
635
636 if (bttv_debug > 1)
637 printk("bttv%d: prisc1: ro=%08lx re=%08lx\n",
638 btv->nr,virt_to_bus(ro), virt_to_bus(re));
639
640 switch(fmt)
641 {
642 case VIDEO_PALETTE_YUV422P:
643 csize=(width*height)>>1;
644 shift=1;
645 lmask=0;
646 break;
647
648 case VIDEO_PALETTE_YUV411P:
649 csize=(width*height)>>2;
650 shift=2;
651 lmask=0;
652 break;
653
654 case VIDEO_PALETTE_YUV420P:
655 csize=(width*height)>>2;
656 shift=1;
657 lmask=1;
658 break;
659
660 case VIDEO_PALETTE_YUV410P:
661 csize=(width*height)>>4;
662 shift=2;
663 lmask=3;
664 break;
665
666 default:
667 return -1;
668 }
669 cbadr=vadr+(width*height);
670 cradr=cbadr+csize;
671 inter = (height>tvnorms[btv->win.norm].sheight/2) ? 1 : 0;
672
673 *(ro++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3);
674 *(ro++)=0;
675 *(re++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3);
676 *(re++)=0;
677
678 for (line=0; line < (height<<(1^inter)); line++)
679 {
680 if(line==height)
681 {
682 vadr+=csize<<1;
683 cbadr=vadr+(width*height);
684 cradr=cbadr+csize;
685 }
686 if (inter)
687 rp= (line&1) ? &re : &ro;
688 else
689 rp= (line>=height) ? &ro : &re;
690
691
692 if(line&lmask)
693 rcmd=BT848_RISC_WRITE1S23|BT848_RISC_SOL;
694 else
695 rcmd=BT848_RISC_WRITE123|BT848_RISC_SOL;
696
697 todo=width;
698 while(todo)
699 {
700 bl=PAGE_SIZE-((PAGE_SIZE-1)&vadr);
701 blcr=(PAGE_SIZE-((PAGE_SIZE-1)&cradr))<<shift;
702 blcb=(PAGE_SIZE-((PAGE_SIZE-1)&cbadr))<<shift;
703 bl=(blcr<bl) ? blcr : bl;
704 bl=(blcb<bl) ? blcb : bl;
705 bl=(bl>todo) ? todo : bl;
706 blcr=bl>>shift;
707 blcb=blcr;
708 /* bl now containts the longest row that can be written */
709 todo-=bl;
710 if(!todo) rcmd|=BT848_RISC_EOL; /* if this is the last EOL */
711
712 *((*rp)++)=cpu_to_le32(rcmd|bl);
713 *((*rp)++)=cpu_to_le32(blcb|(blcr<<16));
714 *((*rp)++)=cpu_to_le32(kvirt_to_bus(vadr));
715 vadr+=bl;
716 if((rcmd&(15<<28))==BT848_RISC_WRITE123)
717 {
718 *((*rp)++)=(kvirt_to_bus(cbadr));
719 cbadr+=blcb;
720 *((*rp)++)=cpu_to_le32(kvirt_to_bus(cradr));
721 cradr+=blcr;
722 }
723
724 rcmd&=~BT848_RISC_SOL; /* only the first has SOL */
725 }
726 }
727
728 *(ro++)=cpu_to_le32(BT848_RISC_JUMP);
729 *(ro++)=cpu_to_le32(btv->bus_vbi_even);
730 *(re++)=cpu_to_le32(BT848_RISC_JUMP|BT848_RISC_IRQ|(2<<16));
731 *(re++)=cpu_to_le32(btv->bus_vbi_odd);
732
733 if (bttv_debug > 1)
734 printk("bttv%d: prisc2: ro=%08lx re=%08lx\n",
735 btv->nr,virt_to_bus(ro), virt_to_bus(re));
736
737 return 0;
738 }
739
740 static int make_vrisctab(struct bttv *btv, unsigned int *ro,
741 unsigned int *re,
742 unsigned int *vbuf, unsigned short width,
743 unsigned short height, unsigned short palette)
744 {
745 unsigned long line;
746 unsigned long bpl; /* bytes per line */
747 unsigned long bl;
748 unsigned long todo;
749 unsigned int **rp;
750 int inter;
751 unsigned long vadr=(unsigned long) vbuf;
752
753 if (palette==VIDEO_PALETTE_RAW)
754 return make_rawrisctab(btv, ro, re, vbuf);
755 if (palette>=VIDEO_PALETTE_PLANAR)
756 return make_prisctab(btv, ro, re, vbuf, width, height, palette);
757
758 if (bttv_debug > 1)
759 printk("bttv%d: vrisc1: ro=%08lx re=%08lx\n",
760 btv->nr,virt_to_bus(ro), virt_to_bus(re));
761
762 inter = (height>tvnorms[btv->win.norm].sheight/2) ? 1 : 0;
763 bpl=width*fmtbppx2[palette2fmt[palette]&0xf]/2;
764
765 *(ro++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
766 *(ro++)=cpu_to_le32(0);
767 *(re++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
768 *(re++)=cpu_to_le32(0);
769
770 for (line=0; line < (height<<(1^inter)); line++)
771 {
772 if (inter)
773 rp= (line&1) ? &re : &ro;
774 else
775 rp= (line>=height) ? &ro : &re;
776
777 bl=PAGE_SIZE-((PAGE_SIZE-1)&vadr);
778 if (bpl<=bl)
779 {
780 *((*rp)++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|
781 BT848_RISC_EOL|bpl);
782 *((*rp)++)=cpu_to_le32(kvirt_to_bus(vadr));
783 vadr+=bpl;
784 }
785 else
786 {
787 todo=bpl;
788 *((*rp)++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_SOL|bl);
789 *((*rp)++)=cpu_to_le32(kvirt_to_bus(vadr));
790 vadr+=bl;
791 todo-=bl;
792 while (todo>PAGE_SIZE)
793 {
794 *((*rp)++)=cpu_to_le32(BT848_RISC_WRITE|PAGE_SIZE);
795 *((*rp)++)=cpu_to_le32(kvirt_to_bus(vadr));
796 vadr+=PAGE_SIZE;
797 todo-=PAGE_SIZE;
798 }
799 *((*rp)++)=cpu_to_le32(BT848_RISC_WRITE|BT848_RISC_EOL|todo);
800 *((*rp)++)=cpu_to_le32(kvirt_to_bus(vadr));
801 vadr+=todo;
802 }
803 }
804
805 *(ro++)=cpu_to_le32(BT848_RISC_JUMP);
806 *(ro++)=cpu_to_le32(btv->bus_vbi_even);
807 *(re++)=cpu_to_le32(BT848_RISC_JUMP|BT848_RISC_IRQ|(2<<16));
808 *(re++)=cpu_to_le32(btv->bus_vbi_odd);
809
810 if (bttv_debug > 1)
811 printk("bttv%d: vrisc2: ro=%08lx re=%08lx\n",
812 btv->nr,virt_to_bus(ro), virt_to_bus(re));
813
814 return 0;
815 }
816
817 static unsigned char lmaskt[8] =
818 { 0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80};
819 static unsigned char rmaskt[8] =
820 { 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff};
821
822 static void clip_draw_rectangle(unsigned char *clipmap, int x, int y, int w, int h)
823 {
824 unsigned char lmask, rmask, *p;
825 int W, l, r;
826 int i;
827
828 if (bttv_debug > 1)
829 printk("bttv clip: %dx%d+%d+%d\n",w,h,x,y);
830
831 /* bitmap is fixed width, 128 bytes (1024 pixels represented) */
832 if (x<0)
833 {
834 w+=x;
835 x=0;
836 }
837 if (y<0)
838 {
839 h+=y;
840 y=0;
841 }
842 if (w < 0 || h < 0) /* catch bad clips */
843 return;
844 /* out of range data should just fall through */
845 if (y+h>=625)
846 h=625-y;
847 if (x+w>=1024)
848 w=1024-x;
849
850 l=x>>3;
851 r=(x+w-1)>>3;
852 W=r-l-1;
853 lmask=lmaskt[x&7];
854 rmask=rmaskt[(x+w-1)&7];
855 p=clipmap+128*y+l;
856
857 if (W>0)
858 {
859 for (i=0; i<h; i++, p+=128)
860 {
861 *p|=lmask;
862 memset(p+1, 0xff, W);
863 p[W+1]|=rmask;
864 }
865 } else if (!W) {
866 for (i=0; i<h; i++, p+=128)
867 {
868 p[0]|=lmask;
869 p[1]|=rmask;
870 }
871 } else {
872 for (i=0; i<h; i++, p+=128)
873 p[0]|=lmask&rmask;
874 }
875
876
877 }
878
879 static void make_clip_tab(struct bttv *btv, struct video_clip *cr, int ncr)
880 {
881 int i, line, x, y, bpl, width, height, inter, maxw;
882 unsigned int bpp, dx, sx, **rp, *ro, *re, flags, len;
883 unsigned long adr;
884 unsigned char *clipmap, *clipline, cbit, lastbit, outofmem;
885
886 /* take care: bpp != btv->win.bpp is allowed here */
887 bpp = fmtbppx2[btv->win.color_fmt&0xf]/2;
888 bpl=btv->win.bpl;
889 adr=btv->win.vidadr + btv->win.x * btv->win.bpp + btv->win.y * bpl;
890 inter=(btv->win.interlace&1)^1;
891 width=btv->win.width;
892 height=btv->win.height;
893 if (bttv_debug > 1)
894 printk("bttv%d: clip1: pal=%d size=%dx%d, bpl=%d bpp=%d\n",
895 btv->nr,btv->picture.palette,width,height,bpl,bpp);
896 if(width > 1023)
897 width = 1023; /* sanity check */
898 if(height > 625)
899 height = 625; /* sanity check */
900 ro=btv->risc_scr_odd;
901 re=btv->risc_scr_even;
902
903 if (bttv_debug)
904 printk("bttv%d: clip: ro=%08lx re=%08lx\n",
905 btv->nr,virt_to_bus(ro), virt_to_bus(re));
906
907 if ((clipmap=vmalloc(VIDEO_CLIPMAP_SIZE))==NULL) {
908 /* can't clip, don't generate any risc code */
909 *(ro++)=cpu_to_le32(BT848_RISC_JUMP);
910 *(ro++)=cpu_to_le32(btv->bus_vbi_even);
911 *(re++)=cpu_to_le32(BT848_RISC_JUMP);
912 *(re++)=cpu_to_le32(btv->bus_vbi_odd);
913 }
914 if (ncr < 0) { /* bitmap was pased */
915 memcpy(clipmap, (unsigned char *)cr, VIDEO_CLIPMAP_SIZE);
916 } else { /* convert rectangular clips to a bitmap */
917 memset(clipmap, 0, VIDEO_CLIPMAP_SIZE); /* clear map */
918 for (i=0; i<ncr; i++)
919 clip_draw_rectangle(clipmap, cr[i].x, cr[i].y,
920 cr[i].width, cr[i].height);
921 }
922 /* clip against viewing window AND screen
923 so we do not have to rely on the user program
924 */
925 maxw = (bpl - btv->win.x * btv->win.bpp) / bpp;
926 clip_draw_rectangle(clipmap, (width > maxw) ? maxw : width,
927 0, 1024, 768);
928 clip_draw_rectangle(clipmap,0,(btv->win.y+height>btv->win.sheight) ?
929 (btv->win.sheight-btv->win.y) : height,1024,768);
930 if (btv->win.x<0)
931 clip_draw_rectangle(clipmap, 0, 0, -(btv->win.x), 768);
932 if (btv->win.y<0)
933 clip_draw_rectangle(clipmap, 0, 0, 1024, -(btv->win.y));
934
935 *(ro++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
936 *(ro++)=cpu_to_le32(0);
937 *(re++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
938 *(re++)=cpu_to_le32(0);
939
940 /* translate bitmap to risc code */
941 for (line=outofmem=0; line < (height<<inter) && !outofmem; line++)
942 {
943 y = line>>inter;
944 rp= (line&1) ? &re : &ro;
945 clipline = clipmap + (y<<7); /* running pointers ... */
946 lastbit = *clipline & 1;
947 for(x=dx=0,sx=0; x<=width && !outofmem;) {
948 if (0 == (x&7)) {
949 /* check bytes not bits if we can ... */
950 if (lastbit) {
951 while (0xff==*clipline && x<width-8) {
952 x += 8;
953 dx += 8;
954 clipline++;
955 }
956 } else {
957 while (0x00==*clipline && x<width-8) {
958 x += 8;
959 dx += 8;
960 clipline++;
961 }
962 }
963 }
964 cbit = *clipline & (1<<(x&7));
965 if (x < width && !lastbit == !cbit) {
966 dx++;
967 } else {
968 /* generate the dma controller code */
969 len = dx * bpp;
970 flags = ((bpp==4) ? BT848_RISC_BYTE3 : 0);
971 flags |= ((!sx) ? BT848_RISC_SOL : 0);
972 flags |= ((sx + dx == width) ? BT848_RISC_EOL : 0);
973 if (!lastbit) {
974 *((*rp)++)=cpu_to_le32(BT848_RISC_WRITE|flags|len);
975 *((*rp)++)=cpu_to_le32(adr + bpp * sx);
976 } else {
977 *((*rp)++)=cpu_to_le32(BT848_RISC_SKIP|flags|len);
978 }
979 lastbit=cbit;
980 sx += dx;
981 dx = 1;
982 if (ro - btv->risc_scr_odd>(RISCMEM_LEN>>3) - 16)
983 outofmem++;
984 if (re - btv->risc_scr_even>(RISCMEM_LEN>>3) - 16)
985 outofmem++;
986 }
987 x++;
988 if (0 == (x&7))
989 clipline++;
990 }
991 if ((!inter)||(line&1))
992 adr+=bpl;
993 }
994
995 vfree(clipmap);
996 /* outofmem flag relies on the following code to discard extra data */
997 *(ro++)=cpu_to_le32(BT848_RISC_JUMP);
998 *(ro++)=cpu_to_le32(btv->bus_vbi_even);
999 *(re++)=cpu_to_le32(BT848_RISC_JUMP);
1000 *(re++)=cpu_to_le32(btv->bus_vbi_odd);
1001
1002 if (bttv_debug > 1)
1003 printk("bttv%d: clip2: pal=%d size=%dx%d, bpl=%d bpp=%d\n",
1004 btv->nr,btv->picture.palette,width,height,bpl,bpp);
1005 }
1006
1007 /*
1008 * Set the registers for the size we have specified. Don't bother
1009 * trying to understand this without the BT848 manual in front of
1010 * you [AC].
1011 *
1012 * PS: The manual is free for download in .pdf format from
1013 * www.brooktree.com - nicely done those folks.
1014 */
1015
1016 static inline void bt848_set_eogeo(struct bttv *btv, struct tvnorm *tvn,
1017 int odd, int width, int height)
1018 {
1019 u16 vscale, hscale;
1020 u32 xsf, sr;
1021 u16 hdelay;
1022 u8 crop, vtc;
1023 int inter = (height>tvn->sheight/2) ? 0 : 1;
1024 int off = odd ? 0x80 : 0x00;
1025
1026 xsf = (width*tvn->scaledtwidth)/tvn->swidth;
1027 hscale = ((tvn->totalwidth*4096UL)/xsf-4096);
1028 hdelay = tvn->hdelayx1;
1029 hdelay = (hdelay*width)/tvn->swidth;
1030 hdelay &= 0x3fe;
1031 sr=((tvn->sheight>>inter)*512)/height-512;
1032 vscale=(0x10000UL-sr)&0x1fff;
1033 crop=((width>>8)&0x03)|((hdelay>>6)&0x0c)|
1034 ((tvn->sheight>>4)&0x30)|((tvn->vdelay>>2)&0xc0);
1035 vscale |= inter ? (BT848_VSCALE_INT<<8) : 0;
1036
1037 if (combfilter) {
1038 /* Some people say interpolation looks bad ... */
1039 vtc = (width < 193) ? 2 : ((width < 385) ? 1 : 0);
1040 if (width < 769)
1041 btor(BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
1042 else
1043 btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
1044 } else {
1045 vtc = 0;
1046 btand(~BT848_VSCALE_COMB, BT848_E_VSCALE_HI+off);
1047 }
1048
1049 btwrite(vtc, BT848_E_VTC+off);
1050 btwrite(hscale>>8, BT848_E_HSCALE_HI+off);
1051 btwrite(hscale&0xff, BT848_E_HSCALE_LO+off);
1052 btaor((vscale>>8), 0xe0, BT848_E_VSCALE_HI+off);
1053 btwrite(vscale&0xff, BT848_E_VSCALE_LO+off);
1054 btwrite(width&0xff, BT848_E_HACTIVE_LO+off);
1055 btwrite(hdelay&0xff, BT848_E_HDELAY_LO+off);
1056 btwrite(tvn->sheight&0xff, BT848_E_VACTIVE_LO+off);
1057 btwrite(tvn->vdelay&0xff, BT848_E_VDELAY_LO+off);
1058 btwrite(crop, BT848_E_CROP+off);
1059 }
1060
1061
1062 static void bt848_set_geo(struct bttv *btv,
1063 int no_irq_context)
1064 {
1065 u16 ewidth, eheight, owidth, oheight;
1066 u16 format, bswap;
1067 struct tvnorm *tvn;
1068
1069 tvn=&tvnorms[btv->win.norm];
1070
1071 btwrite(tvn->adelay, BT848_ADELAY);
1072 btwrite(tvn->bdelay, BT848_BDELAY);
1073 btaor(tvn->iform,~(BT848_IFORM_NORM|BT848_IFORM_XTBOTH), BT848_IFORM);
1074 btwrite(tvn->vbipack, BT848_VBI_PACK_SIZE);
1075 btwrite(1, BT848_VBI_PACK_DEL);
1076
1077 btv->pll.pll_ofreq = tvn->Fsc;
1078 if (no_irq_context)
1079 set_pll(btv);
1080
1081 btv->win.interlace = (btv->win.height>tvn->sheight/2) ? 1 : 0;
1082
1083 if (0 == btv->risc_cap_odd &&
1084 0 == btv->risc_cap_even) {
1085 /* overlay only */
1086 owidth = btv->win.width;
1087 oheight = btv->win.height;
1088 ewidth = btv->win.width;
1089 eheight = btv->win.height;
1090 format = btv->win.color_fmt;
1091 bswap = btv->fb_color_ctl;
1092 } else if (-1 != btv->gq_grab &&
1093 0 == btv->risc_cap_odd &&
1094 !btv->win.interlace &&
1095 btv->scr_on) {
1096 /* odd field -> overlay, even field -> capture */
1097 owidth = btv->win.width;
1098 oheight = btv->win.height;
1099 ewidth = btv->gbuf[btv->gq_grab].width;
1100 eheight = btv->gbuf[btv->gq_grab].height;
1101 format = (btv->win.color_fmt & 0xf0) |
1102 (btv->gbuf[btv->gq_grab].fmt & 0x0f);
1103 bswap = btv->fb_color_ctl & 0x0a;
1104 } else {
1105 /* capture only */
1106 owidth = btv->gbuf[btv->gq_grab].width;
1107 oheight = btv->gbuf[btv->gq_grab].height;
1108 ewidth = btv->gbuf[btv->gq_grab].width;
1109 eheight = btv->gbuf[btv->gq_grab].height;
1110 format = btv->gbuf[btv->gq_grab].fmt;
1111 bswap = 0;
1112 }
1113
1114 /* program odd + even fields */
1115 bt848_set_eogeo(btv, tvn, 1, owidth, oheight);
1116 bt848_set_eogeo(btv, tvn, 0, ewidth, eheight);
1117
1118 btwrite(format, BT848_COLOR_FMT);
1119 btwrite(bswap | BT848_COLOR_CTL_GAMMA, BT848_COLOR_CTL);
1120 }
1121
1122
1123 static int bpp2fmt[4] = {
1124 BT848_COLOR_FMT_RGB8, BT848_COLOR_FMT_RGB16,
1125 BT848_COLOR_FMT_RGB24, BT848_COLOR_FMT_RGB32
1126 };
1127
1128 static void bt848_set_winsize(struct bttv *btv)
1129 {
1130 unsigned short format;
1131
1132 if (btv->picture.palette > 0 && btv->picture.palette <= VIDEO_PALETTE_YUV422) {
1133 /* format set by VIDIOCSPICT */
1134 format = palette2fmt[btv->picture.palette];
1135 } else {
1136 /* use default for the given color depth */
1137 format = (btv->win.depth==15) ? BT848_COLOR_FMT_RGB15 :
1138 bpp2fmt[(btv->win.bpp-1)&3];
1139 }
1140 btv->win.color_fmt = format;
1141 if (bigendian &&
1142 format == BT848_COLOR_FMT_RGB32) {
1143 btv->fb_color_ctl =
1144 BT848_COLOR_CTL_WSWAP_ODD |
1145 BT848_COLOR_CTL_WSWAP_EVEN |
1146 BT848_COLOR_CTL_BSWAP_ODD |
1147 BT848_COLOR_CTL_BSWAP_EVEN;
1148 } else if (bigendian &&
1149 (format == BT848_COLOR_FMT_RGB16 ||
1150 format == BT848_COLOR_FMT_RGB15)) {
1151 btv->fb_color_ctl =
1152 BT848_COLOR_CTL_BSWAP_ODD |
1153 BT848_COLOR_CTL_BSWAP_EVEN;
1154 } else {
1155 btv->fb_color_ctl = 0;
1156 }
1157
1158 /* RGB8 seems to be a 9x5x5 GRB color cube starting at
1159 * color 16. Why the h... can't they even mention this in the
1160 * data sheet? [AC - because it's a standard format so I guess
1161 * it never occurred to them]
1162 * Enable dithering in this mode.
1163 */
1164
1165 if (format==BT848_COLOR_FMT_RGB8)
1166 btand(~BT848_CAP_CTL_DITH_FRAME, BT848_CAP_CTL);
1167 else
1168 btor(BT848_CAP_CTL_DITH_FRAME, BT848_CAP_CTL);
1169
1170 bt848_set_geo(btv,1);
1171 }
1172
1173 /*
1174 * Grab into virtual memory.
1175 */
1176
1177 static int vgrab(struct bttv *btv, struct video_mmap *mp)
1178 {
1179 unsigned int *ro, *re;
1180 unsigned int *vbuf;
1181 unsigned long flags;
1182
1183 if(btv->fbuffer==NULL)
1184 {
1185 if(fbuffer_alloc(btv))
1186 return -ENOBUFS;
1187 }
1188
1189 if(mp->frame >= gbuffers || mp->frame < 0)
1190 return -EINVAL;
1191 if(btv->gbuf[mp->frame].stat != GBUFFER_UNUSED)
1192 return -EBUSY;
1193
1194 if(mp->height < 32 || mp->width < 32)
1195 return -EINVAL;
1196 if (mp->format >= PALETTEFMT_MAX)
1197 return -EINVAL;
1198
1199 if (mp->height*mp->width*fmtbppx2[palette2fmt[mp->format]&0x0f]/2
1200 > gbufsize)
1201 return -EINVAL;
1202 if(-1 == palette2fmt[mp->format])
1203 return -EINVAL;
1204
1205 /*
1206 * Ok load up the BT848
1207 */
1208
1209 vbuf=(unsigned int *)(btv->fbuffer+gbufsize*mp->frame);
1210 ro=btv->gbuf[mp->frame].risc;
1211 re=ro+2048;
1212 make_vrisctab(btv, ro, re, vbuf, mp->width, mp->height, mp->format);
1213
1214 if (bttv_debug)
1215 printk("bttv%d: cap vgrab: queue %d (%d:%dx%d)\n",
1216 btv->nr,mp->frame,mp->format,mp->width,mp->height);
1217 spin_lock_irqsave(&btv->s_lock, flags);
1218 btv->gbuf[mp->frame].stat = GBUFFER_GRABBING;
1219 btv->gbuf[mp->frame].fmt = palette2fmt[mp->format];
1220 btv->gbuf[mp->frame].width = mp->width;
1221 btv->gbuf[mp->frame].height = mp->height;
1222 btv->gbuf[mp->frame].ro = virt_to_bus(ro);
1223 btv->gbuf[mp->frame].re = virt_to_bus(re);
1224
1225 #if 1
1226 if (mp->height <= tvnorms[btv->win.norm].sheight/2 &&
1227 mp->format != VIDEO_PALETTE_RAW)
1228 btv->gbuf[mp->frame].ro = 0;
1229 #endif
1230
1231 if (-1 == btv->gq_grab && btv->gq_in == btv->gq_out) {
1232 btv->gq_start = 1;
1233 btv->risc_jmp[12]=cpu_to_le32(BT848_RISC_JUMP|(0x8<<16)|BT848_RISC_IRQ);
1234 }
1235 btv->gqueue[btv->gq_in++] = mp->frame;
1236 btv->gq_in = btv->gq_in % MAX_GBUFFERS;
1237
1238 btor(3, BT848_CAP_CTL);
1239 btor(3, BT848_GPIO_DMA_CTL);
1240 spin_unlock_irqrestore(&btv->s_lock, flags);
1241 return 0;
1242 }
1243
1244 static long bttv_write(struct video_device *v, const char *buf, unsigned long count, int nonblock)
1245 {
1246 return -EINVAL;
1247 }
1248
1249 static long bttv_read(struct video_device *v, char *buf, unsigned long count, int nonblock)
1250 {
1251 struct bttv *btv= (struct bttv *)v;
1252 int q,todo;
1253 DECLARE_WAITQUEUE(wait, current);
1254
1255 /* BROKEN: RETURNS VBI WHEN IT SHOULD RETURN GRABBED VIDEO FRAME */
1256 todo=count;
1257 while (todo && todo>(q=VBIBUF_SIZE-btv->vbip))
1258 {
1259 if(copy_to_user((void *) buf, (void *) btv->vbibuf+btv->vbip, q))
1260 return -EFAULT;
1261 todo-=q;
1262 buf+=q;
1263
1264 add_wait_queue(&btv->vbiq, &wait);
1265 current->state = TASK_INTERRUPTIBLE;
1266 if (todo && q==VBIBUF_SIZE-btv->vbip)
1267 {
1268 if(nonblock)
1269 {
1270 remove_wait_queue(&btv->vbiq, &wait);
1271 current->state = TASK_RUNNING;
1272 if(count==todo)
1273 return -EWOULDBLOCK;
1274 return count-todo;
1275 }
1276 schedule();
1277 if(signal_pending(current))
1278 {
1279 remove_wait_queue(&btv->vbiq, &wait);
1280 current->state = TASK_RUNNING;
1281
1282 if(todo==count)
1283 return -EINTR;
1284 else
1285 return count-todo;
1286 }
1287 }
1288 remove_wait_queue(&btv->vbiq, &wait);
1289 current->state = TASK_RUNNING;
1290 }
1291 if (todo)
1292 {
1293 if(copy_to_user((void *) buf, (void *) btv->vbibuf+btv->vbip, todo))
1294 return -EFAULT;
1295 btv->vbip+=todo;
1296 }
1297 return count;
1298 }
1299
1300 static inline void burst(int on)
1301 {
1302 tvnorms[0].scaledtwidth = 1135 - (on?BURSTOFFSET-2:0);
1303 tvnorms[0].hdelayx1 = 186 - (on?BURSTOFFSET :0);
1304 tvnorms[2].scaledtwidth = 1135 - (on?BURSTOFFSET-2:0);
1305 tvnorms[2].hdelayx1 = 186 - (on?BURSTOFFSET :0);
1306 }
1307
1308 /*
1309 * called from irq handler on fatal errors. Takes the grabber chip
1310 * offline, flag it needs a reinitialization (which can't be done
1311 * from irq context) and wake up all sleeping proccesses. They would
1312 * block forever else. We also need someone who actually does the
1313 * reinitialization from process context...
1314 */
1315 static void bt848_offline(struct bttv *btv)
1316 {
1317 int i;
1318 spin_lock(&btv->s_lock);
1319
1320 /* cancel all outstanding grab requests */
1321 btv->gq_in = 0;
1322 btv->gq_out = 0;
1323 btv->gq_grab = -1;
1324 for (i = 0; i < gbuffers; i++)
1325 if (btv->gbuf[i].stat == GBUFFER_GRABBING)
1326 btv->gbuf[i].stat = GBUFFER_ERROR;
1327
1328 /* disable screen overlay and DMA */
1329 btv->risc_cap_odd = 0;
1330 btv->risc_cap_even = 0;
1331 bt848_set_risc_jmps(btv,0);
1332
1333 /* flag the chip needs a restart */
1334 btv->needs_restart = 1;
1335 spin_unlock(&btv->s_lock);
1336
1337 wake_up_interruptible(&btv->vbiq);
1338 wake_up_interruptible(&btv->capq);
1339 }
1340
1341 static void bt848_restart(struct bttv *btv)
1342 {
1343 unsigned long irq_flags;
1344
1345 if (bttv_verbose)
1346 printk("bttv%d: resetting chip\n",btv->nr);
1347 btwrite(0xfffffUL, BT848_INT_STAT);
1348 btand(~15, BT848_GPIO_DMA_CTL);
1349 btwrite(0, BT848_SRESET);
1350 btwrite(virt_to_bus(btv->risc_jmp+2),
1351 BT848_RISC_STRT_ADD);
1352
1353 /* enforce pll reprogramming */
1354 btv->pll.pll_current = 0;
1355 set_pll(btv);
1356
1357 spin_lock_irqsave(&btv->s_lock, irq_flags);
1358 btv->errors = 0;
1359 btv->needs_restart = 0;
1360 bt848_set_geo(btv,0);
1361 bt848_set_risc_jmps(btv,-1);
1362 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1363 }
1364
1365 /*
1366 * Open a bttv card. Right now the flags stuff is just playing
1367 */
1368
1369 static int bttv_open(struct video_device *dev, int flags)
1370 {
1371 struct bttv *btv = (struct bttv *)dev;
1372 int i,ret;
1373
1374 ret = -EBUSY;
1375 if (bttv_debug)
1376 printk("bttv%d: open called\n",btv->nr);
1377
1378 MOD_INC_USE_COUNT;
1379 down(&btv->lock);
1380 if (btv->user)
1381 goto out_unlock;
1382
1383 btv->fbuffer=(unsigned char *) rvmalloc(gbuffers*gbufsize);
1384 ret = -ENOMEM;
1385 if (!btv->fbuffer)
1386 goto out_unlock;
1387
1388 btv->gq_in = 0;
1389 btv->gq_out = 0;
1390 btv->gq_grab = -1;
1391 for (i = 0; i < gbuffers; i++)
1392 btv->gbuf[i].stat = GBUFFER_UNUSED;
1393
1394 if (btv->needs_restart)
1395 bt848_restart(btv);
1396 burst(0);
1397 set_pll(btv);
1398 btv->user++;
1399 up(&btv->lock);
1400 return 0;
1401
1402 out_unlock:
1403 up(&btv->lock);
1404 MOD_DEC_USE_COUNT;
1405 return ret;
1406 }
1407
1408 static void bttv_close(struct video_device *dev)
1409 {
1410 struct bttv *btv=(struct bttv *)dev;
1411 unsigned long irq_flags;
1412
1413 down(&btv->lock);
1414 btv->user--;
1415 spin_lock_irqsave(&btv->s_lock, irq_flags);
1416 btv->scr_on = 0;
1417 btv->risc_cap_odd = 0;
1418 btv->risc_cap_even = 0;
1419 bt848_set_risc_jmps(btv,-1);
1420 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1421
1422 /*
1423 * A word of warning. At this point the chip
1424 * is still capturing because its FIFO hasn't emptied
1425 * and the DMA control operations are posted PCI
1426 * operations.
1427 */
1428
1429 btread(BT848_I2C); /* This fixes the PCI posting delay */
1430
1431 if (-1 != btv->gq_grab) {
1432 /*
1433 * This is sucky but right now I can't find a good way to
1434 * be sure its safe to free the buffer. We wait 5-6 fields
1435 * which is more than sufficient to be sure.
1436 */
1437 current->state = TASK_UNINTERRUPTIBLE;
1438 schedule_timeout(HZ/10); /* Wait 1/10th of a second */
1439 }
1440
1441 /*
1442 * We have allowed it to drain.
1443 */
1444
1445 if(btv->fbuffer)
1446 rvfree((void *) btv->fbuffer, gbuffers*gbufsize);
1447 btv->fbuffer=0;
1448 up(&btv->lock);
1449 MOD_DEC_USE_COUNT;
1450 }
1451
1452
1453 /***********************************/
1454 /* ioctls and supporting functions */
1455 /***********************************/
1456
1457 extern inline void bt848_bright(struct bttv *btv, uint bright)
1458 {
1459 btwrite(bright&0xff, BT848_BRIGHT);
1460 }
1461
1462 extern inline void bt848_hue(struct bttv *btv, uint hue)
1463 {
1464 btwrite(hue&0xff, BT848_HUE);
1465 }
1466
1467 extern inline void bt848_contrast(struct bttv *btv, uint cont)
1468 {
1469 unsigned int conthi;
1470
1471 conthi=(cont>>6)&4;
1472 btwrite(cont&0xff, BT848_CONTRAST_LO);
1473 btaor(conthi, ~4, BT848_E_CONTROL);
1474 btaor(conthi, ~4, BT848_O_CONTROL);
1475 }
1476
1477 extern inline void bt848_sat_u(struct bttv *btv, unsigned long data)
1478 {
1479 u32 datahi;
1480
1481 datahi=(data>>7)&2;
1482 btwrite(data&0xff, BT848_SAT_U_LO);
1483 btaor(datahi, ~2, BT848_E_CONTROL);
1484 btaor(datahi, ~2, BT848_O_CONTROL);
1485 }
1486
1487 static inline void bt848_sat_v(struct bttv *btv, unsigned long data)
1488 {
1489 u32 datahi;
1490
1491 datahi=(data>>8)&1;
1492 btwrite(data&0xff, BT848_SAT_V_LO);
1493 btaor(datahi, ~1, BT848_E_CONTROL);
1494 btaor(datahi, ~1, BT848_O_CONTROL);
1495 }
1496
1497 /*
1498 * ioctl routine
1499 */
1500
1501
1502 static int bttv_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
1503 {
1504 struct bttv *btv=(struct bttv *)dev;
1505 unsigned long irq_flags;
1506 int i,ret = 0;
1507
1508 if (bttv_debug > 1)
1509 printk("bttv%d: ioctl 0x%x\n",btv->nr,cmd);
1510
1511 switch (cmd) {
1512 case VIDIOCGCAP:
1513 {
1514 struct video_capability b;
1515 strcpy(b.name,btv->video_dev.name);
1516 b.type = VID_TYPE_CAPTURE|
1517 ((bttv_tvcards[btv->type].tuner != -1) ? VID_TYPE_TUNER : 0) |
1518 VID_TYPE_OVERLAY|
1519 VID_TYPE_CLIPPING|
1520 VID_TYPE_FRAMERAM|
1521 VID_TYPE_SCALES;
1522 b.channels = bttv_tvcards[btv->type].video_inputs;
1523 b.audios = bttv_tvcards[btv->type].audio_inputs;
1524 b.maxwidth = tvnorms[btv->win.norm].swidth;
1525 b.maxheight = tvnorms[btv->win.norm].sheight;
1526 b.minwidth = 32;
1527 b.minheight = 32;
1528 if(copy_to_user(arg,&b,sizeof(b)))
1529 return -EFAULT;
1530 return 0;
1531 }
1532 case VIDIOCGCHAN:
1533 {
1534 struct video_channel v;
1535 if(copy_from_user(&v, arg,sizeof(v)))
1536 return -EFAULT;
1537 v.flags=VIDEO_VC_AUDIO;
1538 v.tuners=0;
1539 v.type=VIDEO_TYPE_CAMERA;
1540 v.norm = btv->win.norm;
1541 if (v.channel>=bttv_tvcards[btv->type].video_inputs)
1542 return -EINVAL;
1543 if(v.channel==bttv_tvcards[btv->type].tuner)
1544 {
1545 strcpy(v.name,"Television");
1546 v.flags|=VIDEO_VC_TUNER;
1547 v.type=VIDEO_TYPE_TV;
1548 v.tuners=1;
1549 }
1550 else if(v.channel==bttv_tvcards[btv->type].svhs)
1551 strcpy(v.name,"S-Video");
1552 else
1553 sprintf(v.name,"Composite%d",v.channel);
1554
1555 if(copy_to_user(arg,&v,sizeof(v)))
1556 return -EFAULT;
1557 return 0;
1558 }
1559 /*
1560 * Each channel has 1 tuner
1561 */
1562 case VIDIOCSCHAN:
1563 {
1564 struct video_channel v;
1565 if(copy_from_user(&v, arg,sizeof(v)))
1566 return -EFAULT;
1567
1568 if (v.channel>bttv_tvcards[btv->type].video_inputs)
1569 return -EINVAL;
1570 if (v.norm > (sizeof(tvnorms)/sizeof(*tvnorms)))
1571 return -EOPNOTSUPP;
1572
1573 bttv_call_i2c_clients(btv,cmd,&v);
1574 down(&btv->lock);
1575 bt848_muxsel(btv, v.channel);
1576 btv->channel=v.channel;
1577 if (btv->win.norm != v.norm) {
1578 btv->win.norm = v.norm;
1579 make_vbitab(btv);
1580 spin_lock_irqsave(&btv->s_lock, irq_flags);
1581 bt848_set_winsize(btv);
1582 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1583 }
1584 up(&btv->lock);
1585 return 0;
1586 }
1587 case VIDIOCGTUNER:
1588 {
1589 struct video_tuner v;
1590 if(copy_from_user(&v,arg,sizeof(v))!=0)
1591 return -EFAULT;
1592 if(v.tuner||btv->channel) /* Only tuner 0 */
1593 return -EINVAL;
1594 strcpy(v.name, "Television");
1595 v.rangelow=0;
1596 v.rangehigh=0xFFFFFFFF;
1597 v.flags=VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
1598 v.mode = btv->win.norm;
1599 v.signal = (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC) ? 0xFFFF : 0;
1600 bttv_call_i2c_clients(btv,cmd,&v);
1601 if(copy_to_user(arg,&v,sizeof(v)))
1602 return -EFAULT;
1603 return 0;
1604 }
1605 /* We have but one tuner */
1606 case VIDIOCSTUNER:
1607 {
1608 struct video_tuner v;
1609 if(copy_from_user(&v, arg, sizeof(v)))
1610 return -EFAULT;
1611 /* Only one channel has a tuner */
1612 if(v.tuner!=bttv_tvcards[btv->type].tuner)
1613 return -EINVAL;
1614
1615 if(v.mode!=VIDEO_MODE_PAL&&v.mode!=VIDEO_MODE_NTSC
1616 &&v.mode!=VIDEO_MODE_SECAM)
1617 return -EOPNOTSUPP;
1618 bttv_call_i2c_clients(btv,cmd,&v);
1619 if (btv->win.norm != v.mode) {
1620 btv->win.norm = v.mode;
1621 down(&btv->lock);
1622 set_pll(btv);
1623 make_vbitab(btv);
1624 spin_lock_irqsave(&btv->s_lock, irq_flags);
1625 bt848_set_winsize(btv);
1626 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1627 up(&btv->lock);
1628 }
1629 return 0;
1630 }
1631 case VIDIOCGPICT:
1632 {
1633 struct video_picture p=btv->picture;
1634 if(copy_to_user(arg, &p, sizeof(p)))
1635 return -EFAULT;
1636 return 0;
1637 }
1638 case VIDIOCSPICT:
1639 {
1640 struct video_picture p;
1641 if(copy_from_user(&p, arg,sizeof(p)))
1642 return -EFAULT;
1643 if (p.palette > PALETTEFMT_MAX)
1644 return -EINVAL;
1645 down(&btv->lock);
1646 /* We want -128 to 127 we get 0-65535 */
1647 bt848_bright(btv, (p.brightness>>8)-128);
1648 /* 0-511 for the colour */
1649 bt848_sat_u(btv, p.colour>>7);
1650 bt848_sat_v(btv, ((p.colour>>7)*201L)/237);
1651 /* -128 to 127 */
1652 bt848_hue(btv, (p.hue>>8)-128);
1653 /* 0-511 */
1654 bt848_contrast(btv, p.contrast>>7);
1655 btv->picture = p;
1656 up(&btv->lock);
1657 return 0;
1658 }
1659 case VIDIOCSWIN:
1660 {
1661 struct video_window vw;
1662 struct video_clip *vcp = NULL;
1663
1664 if(copy_from_user(&vw,arg,sizeof(vw)))
1665 return -EFAULT;
1666
1667 down(&btv->lock);
1668 if(vw.flags || vw.width < 16 || vw.height < 16)
1669 {
1670 spin_lock_irqsave(&btv->s_lock, irq_flags);
1671 btv->scr_on = 0;
1672 bt848_set_risc_jmps(btv,-1);
1673 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1674 up(&btv->lock);
1675 return -EINVAL;
1676 }
1677 if (btv->win.bpp < 4)
1678 { /* adjust and align writes */
1679 vw.x = (vw.x + 3) & ~3;
1680 vw.width &= ~3;
1681 }
1682 if (btv->needs_restart)
1683 bt848_restart(btv);
1684 btv->win.x=vw.x;
1685 btv->win.y=vw.y;
1686 btv->win.width=vw.width;
1687 btv->win.height=vw.height;
1688
1689 spin_lock_irqsave(&btv->s_lock, irq_flags);
1690 bt848_set_risc_jmps(btv,0);
1691 bt848_set_winsize(btv);
1692 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1693
1694 /*
1695 * Do any clips.
1696 */
1697 if(vw.clipcount<0) {
1698 if((vcp=vmalloc(VIDEO_CLIPMAP_SIZE))==NULL) {
1699 up(&btv->lock);
1700 return -ENOMEM;
1701 }
1702 if(copy_from_user(vcp, vw.clips,
1703 VIDEO_CLIPMAP_SIZE)) {
1704 up(&btv->lock);
1705 vfree(vcp);
1706 return -EFAULT;
1707 }
1708 } else if (vw.clipcount) {
1709 if((vcp=vmalloc(sizeof(struct video_clip)*
1710 (vw.clipcount))) == NULL) {
1711 up(&btv->lock);
1712 return -ENOMEM;
1713 }
1714 if(copy_from_user(vcp,vw.clips,
1715 sizeof(struct video_clip)*
1716 vw.clipcount)) {
1717 up(&btv->lock);
1718 vfree(vcp);
1719 return -EFAULT;
1720 }
1721 }
1722 make_clip_tab(btv, vcp, vw.clipcount);
1723 if (vw.clipcount != 0)
1724 vfree(vcp);
1725 spin_lock_irqsave(&btv->s_lock, irq_flags);
1726 bt848_set_risc_jmps(btv,-1);
1727 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1728 up(&btv->lock);
1729 return 0;
1730 }
1731 case VIDIOCGWIN:
1732 {
1733 struct video_window vw;
1734 /* Oh for a COBOL move corresponding .. */
1735 vw.x=btv->win.x;
1736 vw.y=btv->win.y;
1737 vw.width=btv->win.width;
1738 vw.height=btv->win.height;
1739 vw.chromakey=0;
1740 vw.flags=0;
1741 if(btv->win.interlace)
1742 vw.flags|=VIDEO_WINDOW_INTERLACE;
1743 if(copy_to_user(arg,&vw,sizeof(vw)))
1744 return -EFAULT;
1745 return 0;
1746 }
1747 case VIDIOCCAPTURE:
1748 {
1749 int v;
1750 if(copy_from_user(&v, arg,sizeof(v)))
1751 return -EFAULT;
1752 if(btv->win.vidadr == 0)
1753 return -EINVAL;
1754 if (btv->win.width==0 || btv->win.height==0)
1755 return -EINVAL;
1756 spin_lock_irqsave(&btv->s_lock, irq_flags);
1757 if (v == 1 && btv->win.vidadr != 0)
1758 btv->scr_on = 1;
1759 if (v == 0)
1760 btv->scr_on = 0;
1761 bt848_set_risc_jmps(btv,-1);
1762 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1763 return 0;
1764 }
1765 case VIDIOCGFBUF:
1766 {
1767 struct video_buffer v;
1768 v.base=(void *)btv->win.vidadr;
1769 v.height=btv->win.sheight;
1770 v.width=btv->win.swidth;
1771 v.depth=btv->win.depth;
1772 v.bytesperline=btv->win.bpl;
1773 if(copy_to_user(arg, &v,sizeof(v)))
1774 return -EFAULT;
1775 return 0;
1776
1777 }
1778 case VIDIOCSFBUF:
1779 {
1780 struct video_buffer v;
1781 if(!capable(CAP_SYS_ADMIN) &&
1782 !capable(CAP_SYS_RAWIO))
1783 return -EPERM;
1784 if(copy_from_user(&v, arg,sizeof(v)))
1785 return -EFAULT;
1786 if(v.depth!=8 && v.depth!=15 && v.depth!=16 &&
1787 v.depth!=24 && v.depth!=32 && v.width > 16 &&
1788 v.height > 16 && v.bytesperline > 16)
1789 return -EINVAL;
1790 down(&btv->lock);
1791 if (v.base)
1792 btv->win.vidadr=(unsigned long)v.base;
1793 btv->win.sheight=v.height;
1794 btv->win.swidth=v.width;
1795 btv->win.bpp=((v.depth+7)&0x38)/8;
1796 btv->win.depth=v.depth;
1797 btv->win.bpl=v.bytesperline;
1798
1799 /* set sefault color format */
1800 switch (btv->win.bpp) {
1801 case 8: btv->picture.palette = VIDEO_PALETTE_HI240; break;
1802 case 15: btv->picture.palette = VIDEO_PALETTE_RGB555; break;
1803 case 16: btv->picture.palette = VIDEO_PALETTE_RGB565; break;
1804 case 24: btv->picture.palette = VIDEO_PALETTE_RGB24; break;
1805 case 32: btv->picture.palette = VIDEO_PALETTE_RGB32; break;
1806 }
1807
1808 if (bttv_debug)
1809 printk("Display at %p is %d by %d, bytedepth %d, bpl %d\n",
1810 v.base, v.width,v.height, btv->win.bpp, btv->win.bpl);
1811 spin_lock_irqsave(&btv->s_lock, irq_flags);
1812 bt848_set_winsize(btv);
1813 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
1814 up(&btv->lock);
1815 return 0;
1816 }
1817 case VIDIOCKEY:
1818 {
1819 /* Will be handled higher up .. */
1820 return 0;
1821 }
1822 case VIDIOCGFREQ:
1823 {
1824 unsigned long v=btv->win.freq;
1825 if(copy_to_user(arg,&v,sizeof(v)))
1826 return -EFAULT;
1827 return 0;
1828 }
1829 case VIDIOCSFREQ:
1830 {
1831 unsigned long v;
1832 if(copy_from_user(&v, arg, sizeof(v)))
1833 return -EFAULT;
1834 btv->win.freq=v;
1835 bttv_call_i2c_clients(btv,cmd,&v);
1836 #if 0
1837 if (btv->type == BTTV_MIROPRO && btv->radio)
1838 tea5757_set_freq(btv,v);
1839 #endif
1840 return 0;
1841 }
1842
1843 case VIDIOCGAUDIO:
1844 {
1845 struct video_audio v;
1846
1847 v=btv->audio_dev;
1848 v.flags&=~(VIDEO_AUDIO_MUTE|VIDEO_AUDIO_MUTABLE);
1849 v.flags|=VIDEO_AUDIO_MUTABLE;
1850 strcpy(v.name,"TV");
1851
1852 v.mode = VIDEO_SOUND_MONO;
1853 bttv_call_i2c_clients(btv,cmd,&v);
1854
1855 /* card specific hooks */
1856 if (bttv_tvcards[btv->type].audio_hook)
1857 bttv_tvcards[btv->type].audio_hook(btv,&v,0);
1858
1859 if(copy_to_user(arg,&v,sizeof(v)))
1860 return -EFAULT;
1861 return 0;
1862 }
1863 case VIDIOCSAUDIO:
1864 {
1865 struct video_audio v;
1866
1867 if(copy_from_user(&v,arg, sizeof(v)))
1868 return -EFAULT;
1869 down(&btv->lock);
1870 if(v.flags&VIDEO_AUDIO_MUTE)
1871 audio(btv, AUDIO_MUTE, 1);
1872 /* One audio source per tuner -- huh? <GA> */
1873 if(v.audio<0 || v.audio >= bttv_tvcards[btv->type].audio_inputs) {
1874 up(&btv->lock);
1875 return -EINVAL;
1876 }
1877 /* bt848_muxsel(btv,v.audio); */
1878 if(!(v.flags&VIDEO_AUDIO_MUTE))
1879 audio(btv, AUDIO_UNMUTE, 1);
1880
1881 bttv_call_i2c_clients(btv,cmd,&v);
1882
1883 /* card specific hooks */
1884 if (bttv_tvcards[btv->type].audio_hook)
1885 bttv_tvcards[btv->type].audio_hook(btv,&v,0);
1886
1887 btv->audio_dev=v;
1888 up(&btv->lock);
1889 return 0;
1890 }
1891
1892 case VIDIOCSYNC:
1893 {
1894 DECLARE_WAITQUEUE(wait, current);
1895
1896 if(copy_from_user((void *)&i,arg,sizeof(int)))
1897 return -EFAULT;
1898 if (i < 0 || i >= gbuffers)
1899 return -EINVAL;
1900 switch (btv->gbuf[i].stat) {
1901 case GBUFFER_UNUSED:
1902 ret = -EINVAL;
1903 break;
1904 case GBUFFER_GRABBING:
1905 add_wait_queue(&btv->capq, &wait);
1906 current->state = TASK_INTERRUPTIBLE;
1907 while(btv->gbuf[i].stat==GBUFFER_GRABBING) {
1908 if (bttv_debug)
1909 printk("bttv%d: cap sync: sleep on %d\n",btv->nr,i);
1910 schedule();
1911 if(signal_pending(current)) {
1912 remove_wait_queue(&btv->capq, &wait);
1913 current->state = TASK_RUNNING;
1914 return -EINTR;
1915 }
1916 }
1917 remove_wait_queue(&btv->capq, &wait);
1918 current->state = TASK_RUNNING;
1919 /* fall throuth */
1920 case GBUFFER_DONE:
1921 case GBUFFER_ERROR:
1922 ret = (btv->gbuf[i].stat == GBUFFER_ERROR) ? -EIO : 0;
1923 if (bttv_debug)
1924 printk("bttv%d: cap sync: buffer %d, retval %d\n",btv->nr,i,ret);
1925 btv->gbuf[i].stat = GBUFFER_UNUSED;
1926 }
1927 if (btv->needs_restart) {
1928 down(&btv->lock);
1929 bt848_restart(btv);
1930 up(&btv->lock);
1931 }
1932 return ret;
1933 }
1934
1935 case BTTV_FIELDNR:
1936 if(copy_to_user((void *) arg, (void *) &btv->last_field,
1937 sizeof(btv->last_field)))
1938 return -EFAULT;
1939 break;
1940
1941 case BTTV_PLLSET: {
1942 struct bttv_pll_info p;
1943 if(!capable(CAP_SYS_ADMIN))
1944 return -EPERM;
1945 if(copy_from_user(&p , (void *) arg, sizeof(btv->pll)))
1946 return -EFAULT;
1947 down(&btv->lock);
1948 btv->pll.pll_ifreq = p.pll_ifreq;
1949 btv->pll.pll_ofreq = p.pll_ofreq;
1950 btv->pll.pll_crystal = p.pll_crystal;
1951 up(&btv->lock);
1952 break;
1953 }
1954
1955 case VIDIOCMCAPTURE:
1956 {
1957 struct video_mmap vm;
1958 int ret;
1959 if(copy_from_user((void *) &vm, (void *) arg, sizeof(vm)))
1960 return -EFAULT;
1961 down(&btv->lock);
1962 ret = vgrab(btv, &vm);
1963 up(&btv->lock);
1964 return ret;
1965 }
1966
1967 case VIDIOCGMBUF:
1968 {
1969 struct video_mbuf vm;
1970 memset(&vm, 0 , sizeof(vm));
1971 vm.size=gbufsize*gbuffers;
1972 vm.frames=gbuffers;
1973 for (i = 0; i < gbuffers; i++)
1974 vm.offsets[i]=i*gbufsize;
1975 if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
1976 return -EFAULT;
1977 return 0;
1978 }
1979
1980 case VIDIOCGUNIT:
1981 {
1982 struct video_unit vu;
1983 vu.video=btv->video_dev.minor;
1984 vu.vbi=btv->vbi_dev.minor;
1985 if(btv->radio_dev.minor!=-1)
1986 vu.radio=btv->radio_dev.minor;
1987 else
1988 vu.radio=VIDEO_NO_UNIT;
1989 vu.audio=VIDEO_NO_UNIT;
1990 vu.teletext=VIDEO_NO_UNIT;
1991 if(copy_to_user((void *)arg, (void *)&vu, sizeof(vu)))
1992 return -EFAULT;
1993 return 0;
1994 }
1995
1996 case BTTV_BURST_ON:
1997 {
1998 burst(1);
1999 return 0;
2000 }
2001
2002 case BTTV_BURST_OFF:
2003 {
2004 burst(0);
2005 return 0;
2006 }
2007
2008 case BTTV_VERSION:
2009 {
2010 return BTTV_VERSION_CODE;
2011 }
2012
2013 case BTTV_PICNR:
2014 {
2015 /* return picture;*/
2016 return 0;
2017 }
2018
2019 default:
2020 return -ENOIOCTLCMD;
2021 }
2022 return 0;
2023 }
2024
2025 /*
2026 * This maps the vmalloced and reserved fbuffer to user space.
2027 *
2028 * FIXME:
2029 * - PAGE_READONLY should suffice!?
2030 * - remap_page_range is kind of inefficient for page by page remapping.
2031 * But e.g. pte_alloc() does not work in modules ... :-(
2032 */
2033
2034 static int do_bttv_mmap(struct bttv *btv, const char *adr, unsigned long size)
2035 {
2036 unsigned long start=(unsigned long) adr;
2037 unsigned long page,pos;
2038
2039 if (size>gbuffers*gbufsize)
2040 return -EINVAL;
2041 if (!btv->fbuffer) {
2042 if(fbuffer_alloc(btv))
2043 return -EINVAL;
2044 }
2045 pos=(unsigned long) btv->fbuffer;
2046 while (size > 0) {
2047 page = kvirt_to_pa(pos);
2048 if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED))
2049 return -EAGAIN;
2050 start+=PAGE_SIZE;
2051 pos+=PAGE_SIZE;
2052 size-=PAGE_SIZE;
2053 }
2054 return 0;
2055 }
2056
2057 static int bttv_mmap(struct video_device *dev, const char *adr, unsigned long size)
2058 {
2059 struct bttv *btv=(struct bttv *)dev;
2060 int r;
2061
2062 down(&btv->lock);
2063 r=do_bttv_mmap(btv, adr, size);
2064 up(&btv->lock);
2065 return r;
2066 }
2067
2068
2069 static struct video_device bttv_template=
2070 {
2071 name: "UNSET",
2072 type: VID_TYPE_TUNER|VID_TYPE_CAPTURE|VID_TYPE_OVERLAY|VID_TYPE_TELETEXT,
2073 hardware: VID_HARDWARE_BT848,
2074 open: bttv_open,
2075 close: bttv_close,
2076 read: bttv_read,
2077 write: bttv_write,
2078 ioctl: bttv_ioctl,
2079 mmap: bttv_mmap,
2080 minor: -1,
2081 };
2082
2083
2084 static long vbi_read(struct video_device *v, char *buf, unsigned long count,
2085 int nonblock)
2086 {
2087 struct bttv *btv=(struct bttv *)(v-2);
2088 int q,todo;
2089 DECLARE_WAITQUEUE(wait, current);
2090
2091 todo=count;
2092 while (todo && todo>(q=VBIBUF_SIZE-btv->vbip))
2093 {
2094 if (btv->needs_restart) {
2095 down(&btv->lock);
2096 bt848_restart(btv);
2097 up(&btv->lock);
2098 }
2099 if(copy_to_user((void *) buf, (void *) btv->vbibuf+btv->vbip, q))
2100 return -EFAULT;
2101 todo-=q;
2102 buf+=q;
2103
2104 add_wait_queue(&btv->vbiq, &wait);
2105 current->state = TASK_INTERRUPTIBLE;
2106 if (todo && q==VBIBUF_SIZE-btv->vbip)
2107 {
2108 if(nonblock)
2109 {
2110 remove_wait_queue(&btv->vbiq, &wait);
2111 current->state = TASK_RUNNING;
2112 if(count==todo)
2113 return -EWOULDBLOCK;
2114 return count-todo;
2115 }
2116 schedule();
2117 if(signal_pending(current))
2118 {
2119 remove_wait_queue(&btv->vbiq, &wait);
2120 current->state = TASK_RUNNING;
2121 if(todo==count)
2122 return -EINTR;
2123 else
2124 return count-todo;
2125 }
2126 }
2127 remove_wait_queue(&btv->vbiq, &wait);
2128 current->state = TASK_RUNNING;
2129 }
2130 if (todo)
2131 {
2132 if(copy_to_user((void *) buf, (void *) btv->vbibuf+btv->vbip, todo))
2133 return -EFAULT;
2134 btv->vbip+=todo;
2135 }
2136 return count;
2137 }
2138
2139 static unsigned int vbi_poll(struct video_device *dev, struct file *file,
2140 poll_table *wait)
2141 {
2142 struct bttv *btv=(struct bttv *)(dev-2);
2143 unsigned int mask = 0;
2144
2145 poll_wait(file, &btv->vbiq, wait);
2146
2147 if (btv->vbip < VBIBUF_SIZE)
2148 mask |= (POLLIN | POLLRDNORM);
2149
2150 return mask;
2151 }
2152
2153 static int vbi_open(struct video_device *dev, int flags)
2154 {
2155 struct bttv *btv=(struct bttv *)(dev-2);
2156 unsigned long irq_flags;
2157
2158 MOD_INC_USE_COUNT;
2159 down(&btv->lock);
2160 if (btv->needs_restart)
2161 bt848_restart(btv);
2162 set_pll(btv);
2163 btv->vbip=VBIBUF_SIZE;
2164 spin_lock_irqsave(&btv->s_lock, irq_flags);
2165 btv->vbi_on = 1;
2166 bt848_set_risc_jmps(btv,-1);
2167 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
2168 up(&btv->lock);
2169
2170 return 0;
2171 }
2172
2173 static void vbi_close(struct video_device *dev)
2174 {
2175 struct bttv *btv=(struct bttv *)(dev-2);
2176 unsigned long irq_flags;
2177
2178 spin_lock_irqsave(&btv->s_lock, irq_flags);
2179 btv->vbi_on = 0;
2180 bt848_set_risc_jmps(btv,-1);
2181 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
2182 MOD_DEC_USE_COUNT;
2183 }
2184
2185 static int vbi_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
2186 {
2187 struct bttv *btv=(struct bttv *)dev;
2188
2189 switch (cmd) {
2190 case VIDIOCGCAP:
2191 {
2192 struct video_capability b;
2193 strcpy(b.name,btv->vbi_dev.name);
2194 b.type = ((bttv_tvcards[btv->type].tuner != -1) ? VID_TYPE_TUNER : 0) |
2195 VID_TYPE_TELETEXT;
2196 b.channels = 0;
2197 b.audios = 0;
2198 b.maxwidth = 0;
2199 b.maxheight = 0;
2200 b.minwidth = 0;
2201 b.minheight = 0;
2202 if(copy_to_user(arg,&b,sizeof(b)))
2203 return -EFAULT;
2204 return 0;
2205 }
2206 case VIDIOCGFREQ:
2207 case VIDIOCSFREQ:
2208 case BTTV_VERSION:
2209 return bttv_ioctl(dev,cmd,arg);
2210 case BTTV_VBISIZE:
2211 /* make alevt happy :-) */
2212 return VBIBUF_SIZE;
2213 default:
2214 return -EINVAL;
2215 }
2216 }
2217
2218 static struct video_device vbi_template=
2219 {
2220 name: "bttv vbi",
2221 type: VID_TYPE_CAPTURE|VID_TYPE_TELETEXT,
2222 hardware: VID_HARDWARE_BT848,
2223 open: vbi_open,
2224 close: vbi_close,
2225 read: vbi_read,
2226 write: bttv_write,
2227 poll: vbi_poll,
2228 ioctl: vbi_ioctl,
2229 minor: -1,
2230 };
2231
2232
2233 static int radio_open(struct video_device *dev, int flags)
2234 {
2235 struct bttv *btv = (struct bttv *)(dev-1);
2236 unsigned long v;
2237
2238 MOD_INC_USE_COUNT;
2239 down(&btv->lock);
2240 if (btv->user)
2241 goto busy_unlock;
2242 btv->user++;
2243
2244 btv->radio = 1;
2245 v = 400*16;
2246 bttv_call_i2c_clients(btv,VIDIOCSFREQ,&v);
2247 bttv_call_i2c_clients(btv,AUDC_SET_RADIO,&btv->tuner_type);
2248 bt848_muxsel(btv,0);
2249 up(&btv->lock);
2250
2251 return 0;
2252
2253 busy_unlock:
2254 up(&btv->lock);
2255 MOD_DEC_USE_COUNT;
2256 return -EBUSY;
2257 }
2258
2259 static void radio_close(struct video_device *dev)
2260 {
2261 struct bttv *btv=(struct bttv *)(dev-1);
2262
2263 down(&btv->lock);
2264 btv->user--;
2265 btv->radio = 0;
2266 up(&btv->lock);
2267 MOD_DEC_USE_COUNT;
2268 }
2269
2270 static long radio_read(struct video_device *v, char *buf, unsigned long count, int nonblock)
2271 {
2272 return -EINVAL;
2273 }
2274
2275 static int radio_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
2276 {
2277 struct bttv *btv=(struct bttv *)(dev-1);
2278 switch (cmd) {
2279 case VIDIOCGCAP:
2280 {
2281 struct video_capability v;
2282 strcpy(v.name,btv->video_dev.name);
2283 v.type = VID_TYPE_TUNER;
2284 v.channels = 1;
2285 v.audios = 1;
2286 /* No we don't do pictures */
2287 v.maxwidth = 0;
2288 v.maxheight = 0;
2289 v.minwidth = 0;
2290 v.minheight = 0;
2291 if (copy_to_user(arg, &v, sizeof(v)))
2292 return -EFAULT;
2293 return 0;
2294 break;
2295 }
2296 case VIDIOCGTUNER:
2297 {
2298 struct video_tuner v;
2299 if(copy_from_user(&v,arg,sizeof(v))!=0)
2300 return -EFAULT;
2301 if(v.tuner||btv->channel) /* Only tuner 0 */
2302 return -EINVAL;
2303 strcpy(v.name, "Radio");
2304 v.rangelow=(int)(76*16); /* jp: 76.0MHz - 89.9MHz */
2305 v.rangehigh=(int)(108*16); /* eu: 87.5MHz - 108.0MHz */
2306 v.flags= 0; /* XXX */
2307 v.mode = 0; /* XXX */
2308 bttv_call_i2c_clients(btv,cmd,&v);
2309 if(copy_to_user(arg,&v,sizeof(v)))
2310 return -EFAULT;
2311 return 0;
2312 }
2313 case VIDIOCSTUNER:
2314 {
2315 struct video_tuner v;
2316 if(copy_from_user(&v, arg, sizeof(v)))
2317 return -EFAULT;
2318 /* Only channel 0 has a tuner */
2319 if(v.tuner!=0 || btv->channel)
2320 return -EINVAL;
2321 /* XXX anything to do ??? */
2322 return 0;
2323 }
2324 case VIDIOCGFREQ:
2325 case VIDIOCSFREQ:
2326 case VIDIOCGAUDIO:
2327 case VIDIOCSAUDIO:
2328 bttv_ioctl((struct video_device *)btv,cmd,arg);
2329 break;
2330 default:
2331 return -ENOIOCTLCMD;
2332 }
2333 return 0;
2334 }
2335
2336 static struct video_device radio_template=
2337 {
2338 name: "bttv radio",
2339 type: VID_TYPE_TUNER,
2340 hardware: VID_HARDWARE_BT848,
2341 open: radio_open,
2342 close: radio_close,
2343 read: radio_read, /* just returns -EINVAL */
2344 write: bttv_write, /* just returns -EINVAL */
2345 ioctl: radio_ioctl,
2346 minor: -1,
2347 };
2348
2349
2350 static void bt848_set_risc_jmps(struct bttv *btv, int flags)
2351 {
2352 if (-1 == flags) {
2353 /* defaults */
2354 flags = 0;
2355 if (btv->scr_on)
2356 flags |= 0x03;
2357 if (btv->vbi_on)
2358 flags |= 0x0c;
2359 }
2360
2361 if (bttv_debug > 1)
2362 printk("bttv%d: set_risc_jmp %08lx:",
2363 btv->nr,virt_to_bus(btv->risc_jmp));
2364
2365 /* Sync to start of odd field */
2366 btv->risc_jmp[0]=cpu_to_le32(BT848_RISC_SYNC|BT848_RISC_RESYNC
2367 |BT848_FIFO_STATUS_VRE);
2368 btv->risc_jmp[1]=cpu_to_le32(0);
2369
2370 /* Jump to odd vbi sub */
2371 btv->risc_jmp[2]=cpu_to_le32(BT848_RISC_JUMP|(0xd<<20));
2372 if (flags&8) {
2373 if (bttv_debug > 1)
2374 printk(" ev=%08lx",virt_to_bus(btv->vbi_odd));
2375 btv->risc_jmp[3]=cpu_to_le32(virt_to_bus(btv->vbi_odd));
2376 } else {
2377 if (bttv_debug > 1)
2378 printk(" -----------");
2379 btv->risc_jmp[3]=cpu_to_le32(virt_to_bus(btv->risc_jmp+4));
2380 }
2381
2382 /* Jump to odd sub */
2383 btv->risc_jmp[4]=cpu_to_le32(BT848_RISC_JUMP|(0xe<<20));
2384 if (0 != btv->risc_cap_odd) {
2385 if (bttv_debug > 1)
2386 printk(" e%d=%08x",btv->gq_grab,btv->risc_cap_odd);
2387 flags |= 3;
2388 btv->risc_jmp[5]=cpu_to_le32(btv->risc_cap_odd);
2389 } else if ((flags&2) &&
2390 (!btv->win.interlace || 0 == btv->risc_cap_even)) {
2391 if (bttv_debug > 1)
2392 printk(" eo=%08lx",virt_to_bus(btv->risc_scr_odd));
2393 btv->risc_jmp[5]=cpu_to_le32(virt_to_bus(btv->risc_scr_odd));
2394 } else {
2395 if (bttv_debug > 1)
2396 printk(" -----------");
2397 btv->risc_jmp[5]=cpu_to_le32(virt_to_bus(btv->risc_jmp+6));
2398 }
2399
2400
2401 /* Sync to start of even field */
2402 btv->risc_jmp[6]=cpu_to_le32(BT848_RISC_SYNC|BT848_RISC_RESYNC
2403 |BT848_FIFO_STATUS_VRO);
2404 btv->risc_jmp[7]=cpu_to_le32(0);
2405
2406 /* Jump to even vbi sub */
2407 btv->risc_jmp[8]=cpu_to_le32(BT848_RISC_JUMP);
2408 if (flags&4) {
2409 if (bttv_debug > 1)
2410 printk(" ov=%08lx",virt_to_bus(btv->vbi_even));
2411 btv->risc_jmp[9]=cpu_to_le32(virt_to_bus(btv->vbi_even));
2412 } else {
2413 if (bttv_debug > 1)
2414 printk(" -----------");
2415 btv->risc_jmp[9]=cpu_to_le32(virt_to_bus(btv->risc_jmp+10));
2416 }
2417
2418 /* Jump to even sub */
2419 btv->risc_jmp[10]=cpu_to_le32(BT848_RISC_JUMP|(8<<20));
2420 if (0 != btv->risc_cap_even) {
2421 if (bttv_debug > 1)
2422 printk(" o%d=%08x",btv->gq_grab,btv->risc_cap_even);
2423 flags |= 3;
2424 btv->risc_jmp[11]=cpu_to_le32(btv->risc_cap_even);
2425 } else if ((flags&1) &&
2426 btv->win.interlace) {
2427 if (bttv_debug > 1)
2428 printk(" oo=%08lx",virt_to_bus(btv->risc_scr_even));
2429 btv->risc_jmp[11]=cpu_to_le32(virt_to_bus(btv->risc_scr_even));
2430 } else {
2431 if (bttv_debug > 1)
2432 printk(" -----------");
2433 btv->risc_jmp[11]=cpu_to_le32(virt_to_bus(btv->risc_jmp+12));
2434 }
2435
2436 if (btv->gq_start) {
2437 btv->risc_jmp[12]=cpu_to_le32(BT848_RISC_JUMP|(0x8<<16)|BT848_RISC_IRQ);
2438 } else {
2439 btv->risc_jmp[12]=cpu_to_le32(BT848_RISC_JUMP);
2440 }
2441 btv->risc_jmp[13]=cpu_to_le32(virt_to_bus(btv->risc_jmp));
2442
2443 /* enable cpaturing and DMA */
2444 if (bttv_debug > 1)
2445 printk(" flags=0x%x dma=%s\n",
2446 flags,(flags&0x0f) ? "on" : "off");
2447 btaor(flags, ~0x0f, BT848_CAP_CTL);
2448 if (flags&0x0f)
2449 bt848_dma(btv, 3);
2450 else
2451 bt848_dma(btv, 0);
2452 }
2453
2454 static int __devinit init_video_dev(struct bttv *btv)
2455 {
2456 audio(btv, AUDIO_MUTE, 1);
2457
2458 if(video_register_device(&btv->video_dev,VFL_TYPE_GRABBER)<0)
2459 return -1;
2460 if(video_register_device(&btv->vbi_dev,VFL_TYPE_VBI)<0)
2461 {
2462 video_unregister_device(&btv->video_dev);
2463 return -1;
2464 }
2465 if (radio[btv->nr])
2466 {
2467 if(video_register_device(&btv->radio_dev, VFL_TYPE_RADIO)<0)
2468 {
2469 video_unregister_device(&btv->vbi_dev);
2470 video_unregister_device(&btv->video_dev);
2471 return -1;
2472 }
2473 }
2474 return 1;
2475 }
2476
2477 static int __devinit init_bt848(struct bttv *btv)
2478 {
2479 int j;
2480 unsigned long irq_flags;
2481
2482 btv->user=0;
2483 init_MUTEX(&btv->lock);
2484
2485 /* dump current state of the gpio registers before changing them,
2486 * might help to make a new card work */
2487 if (bttv_gpio)
2488 bttv_gpio_tracking(btv,"init #1");
2489
2490 /* reset the bt848 */
2491 btwrite(0, BT848_SRESET);
2492 DEBUG(printk(KERN_DEBUG "bttv%d: bt848_mem: 0x%lx\n", btv->nr, (unsigned long) btv->bt848_mem));
2493
2494 /* not registered yet */
2495 btv->video_dev.minor = -1;
2496 btv->radio_dev.minor = -1;
2497 btv->vbi_dev.minor = -1;
2498
2499 /* default setup for max. PAL size in a 1024xXXX hicolor framebuffer */
2500 btv->win.norm=0; /* change this to 1 for NTSC, 2 for SECAM */
2501 btv->win.interlace=1;
2502 btv->win.x=0;
2503 btv->win.y=0;
2504 btv->win.width=768; /* 640 */
2505 btv->win.height=576; /* 480 */
2506 btv->win.bpp=2;
2507 btv->win.depth=16;
2508 btv->win.color_fmt=BT848_COLOR_FMT_RGB16;
2509 btv->win.bpl=1024*btv->win.bpp;
2510 btv->win.swidth=1024;
2511 btv->win.sheight=768;
2512 btv->win.vidadr=0;
2513 btv->vbi_on=0;
2514 btv->scr_on=0;
2515
2516 btv->risc_scr_odd=0;
2517 btv->risc_scr_even=0;
2518 btv->risc_cap_odd=0;
2519 btv->risc_cap_even=0;
2520 btv->risc_jmp=0;
2521 btv->vbibuf=0;
2522 btv->field=btv->last_field=0;
2523
2524 btv->errors=0;
2525 btv->needs_restart=0;
2526
2527 if (!(btv->risc_scr_odd=(unsigned int *) kmalloc(RISCMEM_LEN/2, GFP_KERNEL)))
2528 return -1;
2529 if (!(btv->risc_scr_even=(unsigned int *) kmalloc(RISCMEM_LEN/2, GFP_KERNEL)))
2530 return -1;
2531 if (!(btv->risc_jmp =(unsigned int *) kmalloc(2048, GFP_KERNEL)))
2532 return -1;
2533 btv->vbi_odd=btv->risc_jmp+16;
2534 btv->vbi_even=btv->vbi_odd+256;
2535 btv->bus_vbi_odd=virt_to_bus(btv->risc_jmp+12);
2536 btv->bus_vbi_even=virt_to_bus(btv->risc_jmp+6);
2537
2538 btwrite(virt_to_bus(btv->risc_jmp+2), BT848_RISC_STRT_ADD);
2539 btv->vbibuf=(unsigned char *) vmalloc_32(VBIBUF_SIZE);
2540 if (!btv->vbibuf)
2541 return -1;
2542 if (!(btv->gbuf = kmalloc(sizeof(struct bttv_gbuf)*gbuffers,GFP_KERNEL)))
2543 return -1;
2544 for (j = 0; j < gbuffers; j++) {
2545 if (!(btv->gbuf[j].risc = kmalloc(16384,GFP_KERNEL)))
2546 return -1;
2547 }
2548
2549 memset(btv->vbibuf, 0, VBIBUF_SIZE); /* We don't want to return random
2550 memory to the user */
2551
2552 btv->fbuffer=NULL;
2553
2554 bt848_muxsel(btv, 1);
2555 bt848_set_winsize(btv);
2556
2557 /* btwrite(0, BT848_TDEC); */
2558 btwrite(0x10, BT848_COLOR_CTL);
2559 btwrite(0x00, BT848_CAP_CTL);
2560 /* set planar and packed mode trigger points and */
2561 /* set rising edge of inverted GPINTR pin as irq trigger */
2562 btwrite(BT848_GPIO_DMA_CTL_PKTP_32|
2563 BT848_GPIO_DMA_CTL_PLTP1_16|
2564 BT848_GPIO_DMA_CTL_PLTP23_16|
2565 BT848_GPIO_DMA_CTL_GPINTC|
2566 BT848_GPIO_DMA_CTL_GPINTI,
2567 BT848_GPIO_DMA_CTL);
2568
2569 /* select direct input */
2570 btwrite(0x00, BT848_GPIO_REG_INP);
2571 btwrite(0x00, BT848_GPIO_OUT_EN);
2572 if (bttv_gpio)
2573 bttv_gpio_tracking(btv,"init #2");
2574
2575 btwrite(BT848_IFORM_MUX1 | BT848_IFORM_XTAUTO | BT848_IFORM_AUTO,
2576 BT848_IFORM);
2577
2578 btwrite(0xd8, BT848_CONTRAST_LO);
2579 bt848_bright(btv, 0x10);
2580
2581 btwrite(0x20, BT848_E_VSCALE_HI);
2582 btwrite(0x20, BT848_O_VSCALE_HI);
2583 btwrite(/*BT848_ADC_SYNC_T|*/
2584 BT848_ADC_RESERVED|BT848_ADC_CRUSH, BT848_ADC);
2585
2586 btwrite(BT848_CONTROL_LDEC, BT848_E_CONTROL);
2587 btwrite(BT848_CONTROL_LDEC, BT848_O_CONTROL);
2588
2589 btv->picture.colour=254<<7;
2590 btv->picture.brightness=128<<8;
2591 btv->picture.hue=128<<8;
2592 btv->picture.contrast=0xd8<<7;
2593
2594 btwrite(0x00, BT848_E_SCLOOP);
2595 btwrite(0x00, BT848_O_SCLOOP);
2596
2597 /* clear interrupt status */
2598 btwrite(0xfffffUL, BT848_INT_STAT);
2599
2600 /* set interrupt mask */
2601 btwrite(btv->triton1|
2602 /*BT848_INT_PABORT|BT848_INT_RIPERR|BT848_INT_PPERR|
2603 BT848_INT_FDSR|BT848_INT_FTRGT|BT848_INT_FBUS|*/
2604 (fieldnr ? BT848_INT_VSYNC : 0)|
2605 BT848_INT_GPINT|
2606 BT848_INT_SCERR|
2607 BT848_INT_RISCI|BT848_INT_OCERR|BT848_INT_VPRES|
2608 BT848_INT_FMTCHG|BT848_INT_HLOCK,
2609 BT848_INT_MASK);
2610
2611 make_vbitab(btv);
2612 spin_lock_irqsave(&btv->s_lock, irq_flags);
2613 bt848_set_risc_jmps(btv,-1);
2614 spin_unlock_irqrestore(&btv->s_lock, irq_flags);
2615
2616 /* needs to be done before i2c is registered */
2617 if (btv->type == BTTV_HAUPPAUGE || btv->type == BTTV_HAUPPAUGE878)
2618 bttv_hauppauge_boot_msp34xx(btv);
2619
2620 /* register i2c */
2621 btv->tuner_type=-1;
2622 init_bttv_i2c(btv);
2623
2624 /* some card-specific stuff (needs working i2c) */
2625 bttv_init_card(btv);
2626
2627 /*
2628 * Now add the template and register the device unit.
2629 */
2630 init_video_dev(btv);
2631
2632 return 0;
2633 }
2634
2635 /* ----------------------------------------------------------------------- */
2636
2637 static char *irq_name[] = { "FMTCHG", "VSYNC", "HSYNC", "OFLOW", "HLOCK",
2638 "VPRES", "6", "7", "I2CDONE", "GPINT", "10",
2639 "RISCI", "FBUS", "FTRGT", "FDSR", "PPERR",
2640 "RIPERR", "PABORT", "OCERR", "SCERR" };
2641
2642 static void bttv_irq(int irq, void *dev_id, struct pt_regs * regs)
2643 {
2644 u32 stat,astat;
2645 u32 dstat;
2646 int count;
2647 struct bttv *btv;
2648
2649 btv=(struct bttv *)dev_id;
2650 count=0;
2651 while (1)
2652 {
2653 /* get/clear interrupt status bits */
2654 stat=btread(BT848_INT_STAT);
2655 astat=stat&btread(BT848_INT_MASK);
2656 if (!astat)
2657 return;
2658 btwrite(stat,BT848_INT_STAT);
2659
2660 /* get device status bits */
2661 dstat=btread(BT848_DSTATUS);
2662
2663 if (irq_debug) {
2664 int i;
2665 printk(KERN_DEBUG "bttv%d: irq loop=%d risc=%x, bits:",
2666 btv->nr, count, stat>>28);
2667 for (i = 0; i < (sizeof(irq_name)/sizeof(char*)); i++) {
2668 if (stat & (1 << i))
2669 printk(" %s",irq_name[i]);
2670 if (astat & (1 << i))
2671 printk("*");
2672 }
2673 if (stat & BT848_INT_HLOCK)
2674 printk(" HLOC => %s", (dstat & BT848_DSTATUS_HLOC)
2675 ? "yes" : "no");
2676 if (stat & BT848_INT_VPRES)
2677 printk(" PRES => %s", (dstat & BT848_DSTATUS_PRES)
2678 ? "yes" : "no");
2679 if (stat & BT848_INT_FMTCHG)
2680 printk(" NUML => %s", (dstat & BT848_DSTATUS_PRES)
2681 ? "625" : "525");
2682 printk("\n");
2683 }
2684
2685 if (astat&BT848_INT_GPINT)
2686 wake_up_interruptible(&btv->gpioq);
2687
2688 if (astat&BT848_INT_VSYNC)
2689 btv->field++;
2690
2691 if (astat&(BT848_INT_SCERR|BT848_INT_OCERR)) {
2692 if (bttv_verbose)
2693 printk("bttv%d: irq:%s%s risc_count=%08x\n",
2694 btv->nr,
2695 (astat&BT848_INT_SCERR) ? " SCERR" : "",
2696 (astat&BT848_INT_OCERR) ? " OCERR" : "",
2697 btread(BT848_RISC_COUNT));
2698 btv->errors++;
2699 if (btv->errors < BTTV_ERRORS) {
2700 spin_lock(&btv->s_lock);
2701 btand(~15, BT848_GPIO_DMA_CTL);
2702 btwrite(virt_to_bus(btv->risc_jmp+2),
2703 BT848_RISC_STRT_ADD);
2704 bt848_set_geo(btv,0);
2705 bt848_set_risc_jmps(btv,-1);
2706 spin_unlock(&btv->s_lock);
2707 } else {
2708 if (bttv_verbose)
2709 printk("bttv%d: aiee: error loops\n",btv->nr);
2710 bt848_offline(btv);
2711 }
2712 }
2713 if (astat&BT848_INT_RISCI)
2714 {
2715 if (bttv_debug > 1)
2716 printk("bttv%d: IRQ_RISCI\n",btv->nr);
2717
2718 /* captured VBI frame */
2719 if (stat&(1<<28))
2720 {
2721 btv->vbip=0;
2722 /* inc vbi frame count for detecting drops */
2723 (*(u32 *)&(btv->vbibuf[VBIBUF_SIZE - 4]))++;
2724 wake_up_interruptible(&btv->vbiq);
2725 }
2726
2727 /* captured full frame */
2728 if (stat&(2<<28) && btv->gq_grab != -1)
2729 {
2730 btv->last_field=btv->field;
2731 if (bttv_debug)
2732 printk("bttv%d: cap irq: done %d\n",btv->nr,btv->gq_grab);
2733 do_gettimeofday(&btv->gbuf[btv->gq_grab].tv);
2734 spin_lock(&btv->s_lock);
2735 btv->gbuf[btv->gq_grab].stat = GBUFFER_DONE;
2736 btv->gq_grab = -1;
2737 if (btv->gq_in != btv->gq_out)
2738 {
2739 btv->gq_grab = btv->gqueue[btv->gq_out++];
2740 btv->gq_out = btv->gq_out % MAX_GBUFFERS;
2741 if (bttv_debug)
2742 printk("bttv%d: cap irq: capture %d\n",btv->nr,btv->gq_grab);
2743 btv->risc_cap_odd = btv->gbuf[btv->gq_grab].ro;
2744 btv->risc_cap_even = btv->gbuf[btv->gq_grab].re;
2745 bt848_set_risc_jmps(btv,-1);
2746 bt848_set_geo(btv,0);
2747 btwrite(BT848_COLOR_CTL_GAMMA,
2748 BT848_COLOR_CTL);
2749 } else {
2750 btv->risc_cap_odd = 0;
2751 btv->risc_cap_even = 0;
2752 bt848_set_risc_jmps(btv,-1);
2753 bt848_set_geo(btv,0);
2754 btwrite(btv->fb_color_ctl | BT848_COLOR_CTL_GAMMA,
2755 BT848_COLOR_CTL);
2756 }
2757 spin_unlock(&btv->s_lock);
2758 wake_up_interruptible(&btv->capq);
2759 break;
2760 }
2761 if (stat&(8<<28))
2762 {
2763 spin_lock(&btv->s_lock);
2764 btv->gq_start = 0;
2765 btv->gq_grab = btv->gqueue[btv->gq_out++];
2766 btv->gq_out = btv->gq_out % MAX_GBUFFERS;
2767 if (bttv_debug)
2768 printk("bttv%d: cap irq: capture %d [start]\n",btv->nr,btv->gq_grab);
2769 btv->risc_cap_odd = btv->gbuf[btv->gq_grab].ro;
2770 btv->risc_cap_even = btv->gbuf[btv->gq_grab].re;
2771 bt848_set_risc_jmps(btv,-1);
2772 bt848_set_geo(btv,0);
2773 btwrite(BT848_COLOR_CTL_GAMMA,
2774 BT848_COLOR_CTL);
2775 spin_unlock(&btv->s_lock);
2776 }
2777 }
2778
2779 if (astat&BT848_INT_HLOCK) {
2780 if ((dstat&BT848_DSTATUS_HLOC) || (btv->radio))
2781 audio(btv, AUDIO_ON,0);
2782 else
2783 audio(btv, AUDIO_OFF,0);
2784 }
2785
2786 count++;
2787 if (count > 20) {
2788 btwrite(0, BT848_INT_MASK);
2789 printk(KERN_ERR
2790 "bttv%d: IRQ lockup, cleared int mask\n", btv->nr);
2791 bt848_offline(btv);
2792 }
2793 }
2794 }
2795
2796
2797
2798 /*
2799 * Scan for a Bt848 card, request the irq and map the io memory
2800 */
2801
2802 static void __devexit bttv_remove(struct pci_dev *pci_dev)
2803 {
2804 u8 command;
2805 int j;
2806 struct bttv *btv = pci_get_drvdata(pci_dev);
2807
2808 if (bttv_verbose)
2809 printk("bttv%d: unloading\n",btv->nr);
2810
2811 /* unregister i2c_bus */
2812 if (0 == btv->i2c_rc)
2813 i2c_bit_del_bus(&btv->i2c_adap);
2814
2815 /* turn off all capturing, DMA and IRQs */
2816 btand(~15, BT848_GPIO_DMA_CTL);
2817
2818 /* first disable interrupts before unmapping the memory! */
2819 btwrite(0, BT848_INT_MASK);
2820 btwrite(~0x0UL,BT848_INT_STAT);
2821 btwrite(0x0, BT848_GPIO_OUT_EN);
2822 if (bttv_gpio)
2823 bttv_gpio_tracking(btv,"cleanup");
2824
2825 /* disable PCI bus-mastering */
2826 pci_read_config_byte(btv->dev, PCI_COMMAND, &command);
2827 /* Should this be &=~ ?? */
2828 command&=~PCI_COMMAND_MASTER;
2829 pci_write_config_byte(btv->dev, PCI_COMMAND, command);
2830
2831 /* unmap and free memory */
2832 for (j = 0; j < gbuffers; j++)
2833 if (btv->gbuf[j].risc)
2834 kfree(btv->gbuf[j].risc);
2835 if (btv->gbuf)
2836 kfree((void *) btv->gbuf);
2837
2838 if (btv->risc_scr_odd)
2839 kfree((void *) btv->risc_scr_odd);
2840
2841 if (btv->risc_scr_even)
2842 kfree((void *) btv->risc_scr_even);
2843
2844 DEBUG(printk(KERN_DEBUG "free: risc_jmp: 0x%p.\n", btv->risc_jmp));
2845 if (btv->risc_jmp)
2846 kfree((void *) btv->risc_jmp);
2847
2848 DEBUG(printk(KERN_DEBUG "bt848_vbibuf: 0x%p.\n", btv->vbibuf));
2849 if (btv->vbibuf)
2850 vfree((void *) btv->vbibuf);
2851
2852 free_irq(btv->irq,btv);
2853 DEBUG(printk(KERN_DEBUG "bt848_mem: 0x%p.\n", btv->bt848_mem));
2854 if (btv->bt848_mem)
2855 iounmap(btv->bt848_mem);
2856
2857 if(btv->video_dev.minor!=-1)
2858 video_unregister_device(&btv->video_dev);
2859 if(btv->vbi_dev.minor!=-1)
2860 video_unregister_device(&btv->vbi_dev);
2861 if (radio[btv->nr] && btv->radio_dev.minor != -1)
2862 video_unregister_device(&btv->radio_dev);
2863
2864 release_mem_region(pci_resource_start(btv->dev,0),
2865 pci_resource_len(btv->dev,0));
2866 /* wake up any waiting processes
2867 because shutdown flag is set, no new processes (in this queue)
2868 are expected
2869 */
2870 btv->shutdown=1;
2871 wake_up(&btv->gpioq);
2872
2873 pci_set_drvdata(pci_dev, NULL);
2874 return;
2875 }
2876
2877
2878 static int __devinit bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
2879 {
2880 int result;
2881 unsigned char lat;
2882 struct bttv *btv;
2883 #if defined(__powerpc__)
2884 unsigned int cmd;
2885 #endif
2886
2887 printk(KERN_INFO "bttv: Bt8xx card found (%d).\n", bttv_num);
2888
2889 btv=&bttvs[bttv_num];
2890 btv->dev=dev;
2891 btv->nr = bttv_num;
2892 btv->bt848_mem=NULL;
2893 btv->vbibuf=NULL;
2894 btv->risc_jmp=NULL;
2895 btv->vbi_odd=NULL;
2896 btv->vbi_even=NULL;
2897 init_waitqueue_head(&btv->vbiq);
2898 init_waitqueue_head(&btv->capq);
2899 btv->vbip=VBIBUF_SIZE;
2900 btv->s_lock = SPIN_LOCK_UNLOCKED;
2901 init_waitqueue_head(&btv->gpioq);
2902 btv->shutdown=0;
2903
2904 memcpy(&btv->video_dev,&bttv_template, sizeof(bttv_template));
2905 memcpy(&btv->vbi_dev,&vbi_template, sizeof(vbi_template));
2906 memcpy(&btv->radio_dev,&radio_template,sizeof(radio_template));
2907
2908 btv->id=dev->device;
2909 btv->irq=dev->irq;
2910 btv->bt848_adr=pci_resource_start(dev,0);
2911 if (pci_enable_device(dev))
2912 return -EIO;
2913 if (!request_mem_region(pci_resource_start(dev,0),
2914 pci_resource_len(dev,0),
2915 "bttv")) {
2916 return -EBUSY;
2917 }
2918 if (btv->id >= 878)
2919 btv->i2c_command = 0x83;
2920 else
2921 btv->i2c_command=(I2C_TIMING | BT848_I2C_SCL | BT848_I2C_SDA);
2922
2923 pci_read_config_byte(dev, PCI_CLASS_REVISION, &btv->revision);
2924 pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
2925 printk(KERN_INFO "bttv%d: Bt%d (rev %d) at %02x:%02x.%x, ",
2926 bttv_num,btv->id, btv->revision, dev->bus->number,
2927 PCI_SLOT(dev->devfn),PCI_FUNC(dev->devfn));
2928 printk("irq: %d, latency: %d, memory: 0x%lx\n",
2929 btv->irq, lat, btv->bt848_adr);
2930
2931 bttv_idcard(btv);
2932
2933 #if defined(__powerpc__)
2934 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
2935 /* response on cards with no firmware is not enabled by OF */
2936 pci_read_config_dword(dev, PCI_COMMAND, &cmd);
2937 cmd = (cmd | PCI_COMMAND_MEMORY );
2938 pci_write_config_dword(dev, PCI_COMMAND, cmd);
2939 #endif
2940
2941 #ifdef __sparc__
2942 btv->bt848_mem=(unsigned char *)btv->bt848_adr;
2943 #else
2944 btv->bt848_mem=ioremap(btv->bt848_adr, 0x1000);
2945 #endif
2946
2947 /* clear interrupt mask */
2948 btwrite(0, BT848_INT_MASK);
2949
2950 result = request_irq(btv->irq, bttv_irq,
2951 SA_SHIRQ | SA_INTERRUPT,"bttv",(void *)btv);
2952 if (result==-EINVAL)
2953 {
2954 printk(KERN_ERR "bttv%d: Bad irq number or handler\n",
2955 bttv_num);
2956 goto fail1;
2957 }
2958 if (result==-EBUSY)
2959 {
2960 printk(KERN_ERR "bttv%d: IRQ %d busy, change your PnP config in BIOS\n",bttv_num,btv->irq);
2961 goto fail1;
2962 }
2963 if (result < 0)
2964 goto fail1;
2965
2966 if (0 != bttv_handle_chipset(btv)) {
2967 result = -1;
2968 goto fail2;
2969 }
2970
2971 pci_set_master(dev);
2972 pci_set_drvdata(dev,btv);
2973
2974 if(init_bt848(btv) < 0) {
2975 bttv_remove(dev);
2976 return -EIO;
2977 }
2978 bttv_num++;
2979
2980 return 0;
2981
2982 fail2:
2983 free_irq(btv->irq,btv);
2984 fail1:
2985 release_mem_region(pci_resource_start(btv->dev,0),
2986 pci_resource_len(btv->dev,0));
2987 return result;
2988 }
2989
2990 static struct pci_device_id bttv_pci_tbl[] __devinitdata = {
2991 {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT848,
2992 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2993 {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT849,
2994 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2995 {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT878,
2996 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2997 {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT879,
2998 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2999 {0,}
3000 };
3001
3002 MODULE_DEVICE_TABLE(pci, bttv_pci_tbl);
3003
3004 static struct pci_driver bttv_pci_driver = {
3005 name: "bttv",
3006 id_table: bttv_pci_tbl,
3007 probe: bttv_probe,
3008 remove: bttv_remove,
3009 };
3010
3011 int bttv_init_module(void)
3012 {
3013 bttv_num = 0;
3014
3015 printk(KERN_INFO "bttv: driver version %d.%d.%d loaded\n",
3016 (BTTV_VERSION_CODE >> 16) & 0xff,
3017 (BTTV_VERSION_CODE >> 8) & 0xff,
3018 BTTV_VERSION_CODE & 0xff);
3019 if (gbuffers < 2 || gbuffers > MAX_GBUFFERS)
3020 gbuffers = 2;
3021 if (gbufsize < 0 || gbufsize > BTTV_MAX_FBUF)
3022 gbufsize = BTTV_MAX_FBUF;
3023 if (bttv_verbose)
3024 printk(KERN_INFO "bttv: using %d buffers with %dk (%dk total) for capture\n",
3025 gbuffers,gbufsize/1024,gbuffers*gbufsize/1024);
3026
3027 bttv_check_chipset();
3028
3029 return pci_module_init(&bttv_pci_driver);
3030 }
3031
3032 void bttv_cleanup_module(void)
3033 {
3034 pci_unregister_driver(&bttv_pci_driver);
3035 return;
3036 }
3037
3038 module_init(bttv_init_module);
3039 module_exit(bttv_cleanup_module);
3040
3041 /*
3042 * Local variables:
3043 * c-basic-offset: 8
3044 * End:
3045 */
Copy of Dave Jones history.git as used by http://archive.org/details/git-history-of-linux