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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / media / pci / cx88 / cx88-mpeg.c
blob74b7b8614c23af893b95807246b180f151bedda3
1 /*
2 *
3 * Support for the mpeg transport stream transfers
4 * PCI function #2 of the cx2388x.
5 *
6 * (c) 2004 Jelle Foks <jelle@foks.us>
7 * (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
8 * (c) 2004 Gerd Knorr <kraxel@bytesex.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <linux/module.h>
26 #include <linux/slab.h>
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/interrupt.h>
31 #include <asm/delay.h>
32
33 #include "cx88.h"
34
35 /* ------------------------------------------------------------------ */
36
37 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
38 MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
39 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
41 MODULE_LICENSE("GPL");
42 MODULE_VERSION(CX88_VERSION);
43
44 static unsigned int debug;
45 module_param(debug,int,0644);
46 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
47
48 #define dprintk(level, fmt, arg...) do { \
49 if (debug + 1 > level) \
50 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg); \
51 } while(0)
52
53 #define mpeg_dbg(level, fmt, arg...) do { \
54 if (debug + 1 > level) \
55 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg); \
56 } while(0)
57
58 #if defined(CONFIG_MODULES) && defined(MODULE)
59 static void request_module_async(struct work_struct *work)
60 {
61 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
62
63 if (dev->core->board.mpeg & CX88_MPEG_DVB)
64 request_module("cx88-dvb");
65 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
66 request_module("cx88-blackbird");
67 }
68
69 static void request_modules(struct cx8802_dev *dev)
70 {
71 INIT_WORK(&dev->request_module_wk, request_module_async);
72 schedule_work(&dev->request_module_wk);
73 }
74
75 static void flush_request_modules(struct cx8802_dev *dev)
76 {
77 flush_work(&dev->request_module_wk);
78 }
79 #else
80 #define request_modules(dev)
81 #define flush_request_modules(dev)
82 #endif /* CONFIG_MODULES */
83
84
85 static LIST_HEAD(cx8802_devlist);
86 static DEFINE_MUTEX(cx8802_mutex);
87 /* ------------------------------------------------------------------ */
88
89 static int cx8802_start_dma(struct cx8802_dev *dev,
90 struct cx88_dmaqueue *q,
91 struct cx88_buffer *buf)
92 {
93 struct cx88_core *core = dev->core;
94
95 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
96 buf->vb.width, buf->vb.height, buf->vb.field);
97
98 /* setup fifo + format */
99 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
100 dev->ts_packet_size, buf->risc.dma);
101
102 /* write TS length to chip */
103 cx_write(MO_TS_LNGTH, buf->vb.width);
104
105 /* FIXME: this needs a review.
106 * also: move to cx88-blackbird + cx88-dvb source files? */
107
108 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
109
110 if ( (core->active_type_id == CX88_MPEG_DVB) &&
111 (core->board.mpeg & CX88_MPEG_DVB) ) {
112
113 dprintk( 1, "cx8802_start_dma doing .dvb\n");
114 /* negedge driven & software reset */
115 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
116 udelay(100);
117 cx_write(MO_PINMUX_IO, 0x00);
118 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
119 switch (core->boardnr) {
120 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
121 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
122 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
123 case CX88_BOARD_PCHDTV_HD5500:
124 cx_write(TS_SOP_STAT, 1<<13);
125 break;
126 case CX88_BOARD_SAMSUNG_SMT_7020:
127 cx_write(TS_SOP_STAT, 0x00);
128 break;
129 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
130 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
131 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
132 udelay(100);
133 break;
134 case CX88_BOARD_HAUPPAUGE_HVR1300:
135 /* Enable MPEG parallel IO and video signal pins */
136 cx_write(MO_PINMUX_IO, 0x88);
137 cx_write(TS_SOP_STAT, 0);
138 cx_write(TS_VALERR_CNTRL, 0);
139 break;
140 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
141 /* Enable MPEG parallel IO and video signal pins */
142 cx_write(MO_PINMUX_IO, 0x88);
143 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
144 dev->ts_gen_cntrl = 5;
145 cx_write(TS_SOP_STAT, 0);
146 cx_write(TS_VALERR_CNTRL, 0);
147 udelay(100);
148 break;
149 default:
150 cx_write(TS_SOP_STAT, 0x00);
151 break;
152 }
153 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
154 udelay(100);
155 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
156 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
157 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
158 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
159
160 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
161 udelay(100);
162
163 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
164 cx_write(TS_VALERR_CNTRL, 0x2000);
165
166 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
167 udelay(100);
168 } else {
169 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
170 core->board.mpeg );
171 return -EINVAL;
172 }
173
174 /* reset counter */
175 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
176 q->count = 1;
177
178 /* enable irqs */
179 dprintk( 1, "setting the interrupt mask\n" );
180 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
181 cx_set(MO_TS_INTMSK, 0x1f0011);
182
183 /* start dma */
184 cx_set(MO_DEV_CNTRL2, (1<<5));
185 cx_set(MO_TS_DMACNTRL, 0x11);
186 return 0;
187 }
188
189 static int cx8802_stop_dma(struct cx8802_dev *dev)
190 {
191 struct cx88_core *core = dev->core;
192 dprintk( 1, "cx8802_stop_dma\n" );
193
194 /* stop dma */
195 cx_clear(MO_TS_DMACNTRL, 0x11);
196
197 /* disable irqs */
198 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
199 cx_clear(MO_TS_INTMSK, 0x1f0011);
200
201 /* Reset the controller */
202 cx_write(TS_GEN_CNTRL, 0xcd);
203 return 0;
204 }
205
206 static int cx8802_restart_queue(struct cx8802_dev *dev,
207 struct cx88_dmaqueue *q)
208 {
209 struct cx88_buffer *buf;
210
211 dprintk( 1, "cx8802_restart_queue\n" );
212 if (list_empty(&q->active))
213 {
214 struct cx88_buffer *prev;
215 prev = NULL;
216
217 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
218
219 for (;;) {
220 if (list_empty(&q->queued))
221 return 0;
222 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
223 if (NULL == prev) {
224 list_move_tail(&buf->vb.queue, &q->active);
225 cx8802_start_dma(dev, q, buf);
226 buf->vb.state = VIDEOBUF_ACTIVE;
227 buf->count = q->count++;
228 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
229 dprintk(1,"[%p/%d] restart_queue - first active\n",
230 buf,buf->vb.i);
231
232 } else if (prev->vb.width == buf->vb.width &&
233 prev->vb.height == buf->vb.height &&
234 prev->fmt == buf->fmt) {
235 list_move_tail(&buf->vb.queue, &q->active);
236 buf->vb.state = VIDEOBUF_ACTIVE;
237 buf->count = q->count++;
238 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
239 dprintk(1,"[%p/%d] restart_queue - move to active\n",
240 buf,buf->vb.i);
241 } else {
242 return 0;
243 }
244 prev = buf;
245 }
246 return 0;
247 }
248
249 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
250 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
251 buf, buf->vb.i);
252 cx8802_start_dma(dev, q, buf);
253 list_for_each_entry(buf, &q->active, vb.queue)
254 buf->count = q->count++;
255 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
256 return 0;
257 }
258
259 /* ------------------------------------------------------------------ */
260
261 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
262 struct cx88_buffer *buf, enum v4l2_field field)
263 {
264 int size = dev->ts_packet_size * dev->ts_packet_count;
265 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
266 int rc;
267
268 dprintk(1, "%s: %p\n", __func__, buf);
269 if (0 != buf->vb.baddr && buf->vb.bsize < size)
270 return -EINVAL;
271
272 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
273 buf->vb.width = dev->ts_packet_size;
274 buf->vb.height = dev->ts_packet_count;
275 buf->vb.size = size;
276 buf->vb.field = field /*V4L2_FIELD_TOP*/;
277
278 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
279 goto fail;
280 cx88_risc_databuffer(dev->pci, &buf->risc,
281 dma->sglist,
282 buf->vb.width, buf->vb.height, 0);
283 }
284 buf->vb.state = VIDEOBUF_PREPARED;
285 return 0;
286
287 fail:
288 cx88_free_buffer(q,buf);
289 return rc;
290 }
291
292 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
293 {
294 struct cx88_buffer *prev;
295 struct cx88_dmaqueue *cx88q = &dev->mpegq;
296
297 dprintk( 1, "cx8802_buf_queue\n" );
298 /* add jump to stopper */
299 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
300 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
301
302 if (list_empty(&cx88q->active)) {
303 dprintk( 1, "queue is empty - first active\n" );
304 list_add_tail(&buf->vb.queue,&cx88q->active);
305 cx8802_start_dma(dev, cx88q, buf);
306 buf->vb.state = VIDEOBUF_ACTIVE;
307 buf->count = cx88q->count++;
308 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
309 dprintk(1,"[%p/%d] %s - first active\n",
310 buf, buf->vb.i, __func__);
311
312 } else {
313 dprintk( 1, "queue is not empty - append to active\n" );
314 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
315 list_add_tail(&buf->vb.queue,&cx88q->active);
316 buf->vb.state = VIDEOBUF_ACTIVE;
317 buf->count = cx88q->count++;
318 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
319 dprintk( 1, "[%p/%d] %s - append to active\n",
320 buf, buf->vb.i, __func__);
321 }
322 }
323
324 /* ----------------------------------------------------------- */
325
326 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
327 {
328 struct cx88_dmaqueue *q = &dev->mpegq;
329 struct cx88_buffer *buf;
330 unsigned long flags;
331
332 spin_lock_irqsave(&dev->slock,flags);
333 while (!list_empty(&q->active)) {
334 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
335 list_del(&buf->vb.queue);
336 buf->vb.state = VIDEOBUF_ERROR;
337 wake_up(&buf->vb.done);
338 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
339 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
340 }
341 if (restart)
342 {
343 dprintk(1, "restarting queue\n" );
344 cx8802_restart_queue(dev,q);
345 }
346 spin_unlock_irqrestore(&dev->slock,flags);
347 }
348
349 void cx8802_cancel_buffers(struct cx8802_dev *dev)
350 {
351 struct cx88_dmaqueue *q = &dev->mpegq;
352
353 dprintk( 1, "cx8802_cancel_buffers" );
354 del_timer_sync(&q->timeout);
355 cx8802_stop_dma(dev);
356 do_cancel_buffers(dev,"cancel",0);
357 }
358
359 static void cx8802_timeout(unsigned long data)
360 {
361 struct cx8802_dev *dev = (struct cx8802_dev*)data;
362
363 dprintk(1, "%s\n",__func__);
364
365 if (debug)
366 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
367 cx8802_stop_dma(dev);
368 do_cancel_buffers(dev,"timeout",1);
369 }
370
371 static const char * cx88_mpeg_irqs[32] = {
372 "ts_risci1", NULL, NULL, NULL,
373 "ts_risci2", NULL, NULL, NULL,
374 "ts_oflow", NULL, NULL, NULL,
375 "ts_sync", NULL, NULL, NULL,
376 "opc_err", "par_err", "rip_err", "pci_abort",
377 "ts_err?",
378 };
379
380 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
381 {
382 struct cx88_core *core = dev->core;
383 u32 status, mask, count;
384
385 dprintk( 1, "cx8802_mpeg_irq\n" );
386 status = cx_read(MO_TS_INTSTAT);
387 mask = cx_read(MO_TS_INTMSK);
388 if (0 == (status & mask))
389 return;
390
391 cx_write(MO_TS_INTSTAT, status);
392
393 if (debug || (status & mask & ~0xff))
394 cx88_print_irqbits(core->name, "irq mpeg ",
395 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
396 status, mask);
397
398 /* risc op code error */
399 if (status & (1 << 16)) {
400 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
401 cx_clear(MO_TS_DMACNTRL, 0x11);
402 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
403 }
404
405 /* risc1 y */
406 if (status & 0x01) {
407 dprintk( 1, "wake up\n" );
408 spin_lock(&dev->slock);
409 count = cx_read(MO_TS_GPCNT);
410 cx88_wakeup(dev->core, &dev->mpegq, count);
411 spin_unlock(&dev->slock);
412 }
413
414 /* risc2 y */
415 if (status & 0x10) {
416 spin_lock(&dev->slock);
417 cx8802_restart_queue(dev,&dev->mpegq);
418 spin_unlock(&dev->slock);
419 }
420
421 /* other general errors */
422 if (status & 0x1f0100) {
423 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
424 spin_lock(&dev->slock);
425 cx8802_stop_dma(dev);
426 cx8802_restart_queue(dev,&dev->mpegq);
427 spin_unlock(&dev->slock);
428 }
429 }
430
431 #define MAX_IRQ_LOOP 10
432
433 static irqreturn_t cx8802_irq(int irq, void *dev_id)
434 {
435 struct cx8802_dev *dev = dev_id;
436 struct cx88_core *core = dev->core;
437 u32 status;
438 int loop, handled = 0;
439
440 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
441 status = cx_read(MO_PCI_INTSTAT) &
442 (core->pci_irqmask | PCI_INT_TSINT);
443 if (0 == status)
444 goto out;
445 dprintk( 1, "cx8802_irq\n" );
446 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
447 dprintk( 1, " status: %d\n", status );
448 handled = 1;
449 cx_write(MO_PCI_INTSTAT, status);
450
451 if (status & core->pci_irqmask)
452 cx88_core_irq(core,status);
453 if (status & PCI_INT_TSINT)
454 cx8802_mpeg_irq(dev);
455 }
456 if (MAX_IRQ_LOOP == loop) {
457 dprintk( 0, "clearing mask\n" );
458 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
459 core->name);
460 cx_write(MO_PCI_INTMSK,0);
461 }
462
463 out:
464 return IRQ_RETVAL(handled);
465 }
466
467 static int cx8802_init_common(struct cx8802_dev *dev)
468 {
469 struct cx88_core *core = dev->core;
470 int err;
471
472 /* pci init */
473 if (pci_enable_device(dev->pci))
474 return -EIO;
475 pci_set_master(dev->pci);
476 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
477 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
478 return -EIO;
479 }
480
481 dev->pci_rev = dev->pci->revision;
482 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
483 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
484 "latency: %d, mmio: 0x%llx\n", dev->core->name,
485 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
486 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
487
488 /* initialize driver struct */
489 spin_lock_init(&dev->slock);
490
491 /* init dma queue */
492 INIT_LIST_HEAD(&dev->mpegq.active);
493 INIT_LIST_HEAD(&dev->mpegq.queued);
494 dev->mpegq.timeout.function = cx8802_timeout;
495 dev->mpegq.timeout.data = (unsigned long)dev;
496 init_timer(&dev->mpegq.timeout);
497 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
498 MO_TS_DMACNTRL,0x11,0x00);
499
500 /* get irq */
501 err = request_irq(dev->pci->irq, cx8802_irq,
502 IRQF_SHARED, dev->core->name, dev);
503 if (err < 0) {
504 printk(KERN_ERR "%s: can't get IRQ %d\n",
505 dev->core->name, dev->pci->irq);
506 return err;
507 }
508 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
509
510 /* everything worked */
511 pci_set_drvdata(dev->pci,dev);
512 return 0;
513 }
514
515 static void cx8802_fini_common(struct cx8802_dev *dev)
516 {
517 dprintk( 2, "cx8802_fini_common\n" );
518 cx8802_stop_dma(dev);
519 pci_disable_device(dev->pci);
520
521 /* unregister stuff */
522 free_irq(dev->pci->irq, dev);
523
524 /* free memory */
525 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
526 }
527
528 /* ----------------------------------------------------------- */
529
530 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
531 {
532 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
533 struct cx88_core *core = dev->core;
534 unsigned long flags;
535
536 /* stop mpeg dma */
537 spin_lock_irqsave(&dev->slock, flags);
538 if (!list_empty(&dev->mpegq.active)) {
539 dprintk( 2, "suspend\n" );
540 printk("%s: suspend mpeg\n", core->name);
541 cx8802_stop_dma(dev);
542 del_timer(&dev->mpegq.timeout);
543 }
544 spin_unlock_irqrestore(&dev->slock, flags);
545
546 /* FIXME -- shutdown device */
547 cx88_shutdown(dev->core);
548
549 pci_save_state(pci_dev);
550 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
551 pci_disable_device(pci_dev);
552 dev->state.disabled = 1;
553 }
554 return 0;
555 }
556
557 static int cx8802_resume_common(struct pci_dev *pci_dev)
558 {
559 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
560 struct cx88_core *core = dev->core;
561 unsigned long flags;
562 int err;
563
564 if (dev->state.disabled) {
565 err=pci_enable_device(pci_dev);
566 if (err) {
567 printk(KERN_ERR "%s: can't enable device\n",
568 dev->core->name);
569 return err;
570 }
571 dev->state.disabled = 0;
572 }
573 err=pci_set_power_state(pci_dev, PCI_D0);
574 if (err) {
575 printk(KERN_ERR "%s: can't enable device\n",
576 dev->core->name);
577 pci_disable_device(pci_dev);
578 dev->state.disabled = 1;
579
580 return err;
581 }
582 pci_restore_state(pci_dev);
583
584 /* FIXME: re-initialize hardware */
585 cx88_reset(dev->core);
586
587 /* restart video+vbi capture */
588 spin_lock_irqsave(&dev->slock, flags);
589 if (!list_empty(&dev->mpegq.active)) {
590 printk("%s: resume mpeg\n", core->name);
591 cx8802_restart_queue(dev,&dev->mpegq);
592 }
593 spin_unlock_irqrestore(&dev->slock, flags);
594
595 return 0;
596 }
597
598 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
599 {
600 struct cx8802_driver *d;
601
602 list_for_each_entry(d, &dev->drvlist, drvlist)
603 if (d->type_id == btype)
604 return d;
605
606 return NULL;
607 }
608
609 /* Driver asked for hardware access. */
610 static int cx8802_request_acquire(struct cx8802_driver *drv)
611 {
612 struct cx88_core *core = drv->core;
613 unsigned int i;
614
615 /* Fail a request for hardware if the device is busy. */
616 if (core->active_type_id != CX88_BOARD_NONE &&
617 core->active_type_id != drv->type_id)
618 return -EBUSY;
619
620 if (drv->type_id == CX88_MPEG_DVB) {
621 /* When switching to DVB, always set the input to the tuner */
622 core->last_analog_input = core->input;
623 core->input = 0;
624 for (i = 0;
625 i < (sizeof(core->board.input) / sizeof(struct cx88_input));
626 i++) {
627 if (core->board.input[i].type == CX88_VMUX_DVB) {
628 core->input = i;
629 break;
630 }
631 }
632 }
633
634 if (drv->advise_acquire)
635 {
636 core->active_ref++;
637 if (core->active_type_id == CX88_BOARD_NONE) {
638 core->active_type_id = drv->type_id;
639 drv->advise_acquire(drv);
640 }
641
642 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
643 }
644
645 return 0;
646 }
647
648 /* Driver asked to release hardware. */
649 static int cx8802_request_release(struct cx8802_driver *drv)
650 {
651 struct cx88_core *core = drv->core;
652
653 if (drv->advise_release && --core->active_ref == 0)
654 {
655 if (drv->type_id == CX88_MPEG_DVB) {
656 /* If the DVB driver is releasing, reset the input
657 state to the last configured analog input */
658 core->input = core->last_analog_input;
659 }
660
661 drv->advise_release(drv);
662 core->active_type_id = CX88_BOARD_NONE;
663 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
664 }
665
666 return 0;
667 }
668
669 static int cx8802_check_driver(struct cx8802_driver *drv)
670 {
671 if (drv == NULL)
672 return -ENODEV;
673
674 if ((drv->type_id != CX88_MPEG_DVB) &&
675 (drv->type_id != CX88_MPEG_BLACKBIRD))
676 return -EINVAL;
677
678 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
679 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
680 return -EINVAL;
681
682 if ((drv->probe == NULL) ||
683 (drv->remove == NULL) ||
684 (drv->advise_acquire == NULL) ||
685 (drv->advise_release == NULL))
686 return -EINVAL;
687
688 return 0;
689 }
690
691 int cx8802_register_driver(struct cx8802_driver *drv)
692 {
693 struct cx8802_dev *dev;
694 struct cx8802_driver *driver;
695 int err, i = 0;
696
697 printk(KERN_INFO
698 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
699 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
700 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
701
702 if ((err = cx8802_check_driver(drv)) != 0) {
703 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
704 return err;
705 }
706
707 mutex_lock(&cx8802_mutex);
708
709 list_for_each_entry(dev, &cx8802_devlist, devlist) {
710 printk(KERN_INFO
711 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
712 dev->core->name, dev->pci->subsystem_vendor,
713 dev->pci->subsystem_device, dev->core->board.name,
714 dev->core->boardnr);
715
716 /* Bring up a new struct for each driver instance */
717 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
718 if (driver == NULL) {
719 err = -ENOMEM;
720 goto out;
721 }
722
723 /* Snapshot of the driver registration data */
724 drv->core = dev->core;
725 drv->suspend = cx8802_suspend_common;
726 drv->resume = cx8802_resume_common;
727 drv->request_acquire = cx8802_request_acquire;
728 drv->request_release = cx8802_request_release;
729 memcpy(driver, drv, sizeof(*driver));
730
731 mutex_lock(&drv->core->lock);
732 err = drv->probe(driver);
733 if (err == 0) {
734 i++;
735 list_add_tail(&driver->drvlist, &dev->drvlist);
736 } else {
737 printk(KERN_ERR
738 "%s/2: cx8802 probe failed, err = %d\n",
739 dev->core->name, err);
740 }
741 mutex_unlock(&drv->core->lock);
742 }
743
744 err = i ? 0 : -ENODEV;
745 out:
746 mutex_unlock(&cx8802_mutex);
747 return err;
748 }
749
750 int cx8802_unregister_driver(struct cx8802_driver *drv)
751 {
752 struct cx8802_dev *dev;
753 struct cx8802_driver *d, *dtmp;
754 int err = 0;
755
756 printk(KERN_INFO
757 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
758 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
759 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
760
761 mutex_lock(&cx8802_mutex);
762
763 list_for_each_entry(dev, &cx8802_devlist, devlist) {
764 printk(KERN_INFO
765 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
766 dev->core->name, dev->pci->subsystem_vendor,
767 dev->pci->subsystem_device, dev->core->board.name,
768 dev->core->boardnr);
769
770 mutex_lock(&dev->core->lock);
771
772 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
773 /* only unregister the correct driver type */
774 if (d->type_id != drv->type_id)
775 continue;
776
777 err = d->remove(d);
778 if (err == 0) {
779 list_del(&d->drvlist);
780 kfree(d);
781 } else
782 printk(KERN_ERR "%s/2: cx8802 driver remove "
783 "failed (%d)\n", dev->core->name, err);
784 }
785
786 mutex_unlock(&dev->core->lock);
787 }
788
789 mutex_unlock(&cx8802_mutex);
790
791 return err;
792 }
793
794 /* ----------------------------------------------------------- */
795 static int cx8802_probe(struct pci_dev *pci_dev,
796 const struct pci_device_id *pci_id)
797 {
798 struct cx8802_dev *dev;
799 struct cx88_core *core;
800 int err;
801
802 /* general setup */
803 core = cx88_core_get(pci_dev);
804 if (NULL == core)
805 return -EINVAL;
806
807 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
808
809 err = -ENODEV;
810 if (!core->board.mpeg)
811 goto fail_core;
812
813 err = -ENOMEM;
814 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
815 if (NULL == dev)
816 goto fail_core;
817 dev->pci = pci_dev;
818 dev->core = core;
819
820 /* Maintain a reference so cx88-video can query the 8802 device. */
821 core->dvbdev = dev;
822
823 err = cx8802_init_common(dev);
824 if (err != 0)
825 goto fail_free;
826
827 INIT_LIST_HEAD(&dev->drvlist);
828 mutex_lock(&cx8802_mutex);
829 list_add_tail(&dev->devlist,&cx8802_devlist);
830 mutex_unlock(&cx8802_mutex);
831
832 /* now autoload cx88-dvb or cx88-blackbird */
833 request_modules(dev);
834 return 0;
835
836 fail_free:
837 kfree(dev);
838 fail_core:
839 core->dvbdev = NULL;
840 cx88_core_put(core,pci_dev);
841 return err;
842 }
843
844 static void cx8802_remove(struct pci_dev *pci_dev)
845 {
846 struct cx8802_dev *dev;
847
848 dev = pci_get_drvdata(pci_dev);
849
850 dprintk( 1, "%s\n", __func__);
851
852 flush_request_modules(dev);
853
854 mutex_lock(&dev->core->lock);
855
856 if (!list_empty(&dev->drvlist)) {
857 struct cx8802_driver *drv, *tmp;
858 int err;
859
860 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
861 "while cx8802 sub-drivers still loaded?!\n",
862 dev->core->name);
863
864 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
865 err = drv->remove(drv);
866 if (err == 0) {
867 list_del(&drv->drvlist);
868 } else
869 printk(KERN_ERR "%s/2: cx8802 driver remove "
870 "failed (%d)\n", dev->core->name, err);
871 kfree(drv);
872 }
873 }
874
875 mutex_unlock(&dev->core->lock);
876
877 /* Destroy any 8802 reference. */
878 dev->core->dvbdev = NULL;
879
880 /* common */
881 cx8802_fini_common(dev);
882 cx88_core_put(dev->core,dev->pci);
883 kfree(dev);
884 }
885
886 static const struct pci_device_id cx8802_pci_tbl[] = {
887 {
888 .vendor = 0x14f1,
889 .device = 0x8802,
890 .subvendor = PCI_ANY_ID,
891 .subdevice = PCI_ANY_ID,
892 },{
893 /* --- end of list --- */
894 }
895 };
896 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
897
898 static struct pci_driver cx8802_pci_driver = {
899 .name = "cx88-mpeg driver manager",
900 .id_table = cx8802_pci_tbl,
901 .probe = cx8802_probe,
902 .remove = cx8802_remove,
903 };
904
905 module_pci_driver(cx8802_pci_driver);
906
907 EXPORT_SYMBOL(cx8802_buf_prepare);
908 EXPORT_SYMBOL(cx8802_buf_queue);
909 EXPORT_SYMBOL(cx8802_cancel_buffers);
910
911 EXPORT_SYMBOL(cx8802_register_driver);
912 EXPORT_SYMBOL(cx8802_unregister_driver);
913 EXPORT_SYMBOL(cx8802_get_driver);
914 /* ----------------------------------------------------------- */
915 /*
916 * Local variables:
917 * c-basic-offset: 8
918 * End:
919 * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
920 */
Linux with added FPC-III support