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Merge branches 'x86-cleanups-for-linus' and 'x86-cpufeature-for-linus' of git://git...
[deliverable/linux.git] / drivers / media / video / cx88 / cx88-mpeg.c
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...) if (debug >= level) \
49 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
50
51 #define mpeg_dbg(level,fmt, arg...) if (debug >= level) \
52 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
53
54 #if defined(CONFIG_MODULES) && defined(MODULE)
55 static void request_module_async(struct work_struct *work)
56 {
57 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
58
59 if (dev->core->board.mpeg & CX88_MPEG_DVB)
60 request_module("cx88-dvb");
61 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
62 request_module("cx88-blackbird");
63 }
64
65 static void request_modules(struct cx8802_dev *dev)
66 {
67 INIT_WORK(&dev->request_module_wk, request_module_async);
68 schedule_work(&dev->request_module_wk);
69 }
70
71 static void flush_request_modules(struct cx8802_dev *dev)
72 {
73 flush_work_sync(&dev->request_module_wk);
74 }
75 #else
76 #define request_modules(dev)
77 #define flush_request_modules(dev)
78 #endif /* CONFIG_MODULES */
79
80
81 static LIST_HEAD(cx8802_devlist);
82 static DEFINE_MUTEX(cx8802_mutex);
83 /* ------------------------------------------------------------------ */
84
85 static int cx8802_start_dma(struct cx8802_dev *dev,
86 struct cx88_dmaqueue *q,
87 struct cx88_buffer *buf)
88 {
89 struct cx88_core *core = dev->core;
90
91 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
92 buf->vb.width, buf->vb.height, buf->vb.field);
93
94 /* setup fifo + format */
95 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
96 dev->ts_packet_size, buf->risc.dma);
97
98 /* write TS length to chip */
99 cx_write(MO_TS_LNGTH, buf->vb.width);
100
101 /* FIXME: this needs a review.
102 * also: move to cx88-blackbird + cx88-dvb source files? */
103
104 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
105
106 if ( (core->active_type_id == CX88_MPEG_DVB) &&
107 (core->board.mpeg & CX88_MPEG_DVB) ) {
108
109 dprintk( 1, "cx8802_start_dma doing .dvb\n");
110 /* negedge driven & software reset */
111 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
112 udelay(100);
113 cx_write(MO_PINMUX_IO, 0x00);
114 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
115 switch (core->boardnr) {
116 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
117 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
118 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
119 case CX88_BOARD_PCHDTV_HD5500:
120 cx_write(TS_SOP_STAT, 1<<13);
121 break;
122 case CX88_BOARD_SAMSUNG_SMT_7020:
123 cx_write(TS_SOP_STAT, 0x00);
124 break;
125 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
126 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
127 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
128 udelay(100);
129 break;
130 case CX88_BOARD_HAUPPAUGE_HVR1300:
131 /* Enable MPEG parallel IO and video signal pins */
132 cx_write(MO_PINMUX_IO, 0x88);
133 cx_write(TS_SOP_STAT, 0);
134 cx_write(TS_VALERR_CNTRL, 0);
135 break;
136 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
137 /* Enable MPEG parallel IO and video signal pins */
138 cx_write(MO_PINMUX_IO, 0x88);
139 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
140 dev->ts_gen_cntrl = 5;
141 cx_write(TS_SOP_STAT, 0);
142 cx_write(TS_VALERR_CNTRL, 0);
143 udelay(100);
144 break;
145 default:
146 cx_write(TS_SOP_STAT, 0x00);
147 break;
148 }
149 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
150 udelay(100);
151 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
152 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
153 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
154 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
155
156 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
157 udelay(100);
158
159 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
160 cx_write(TS_VALERR_CNTRL, 0x2000);
161
162 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
163 udelay(100);
164 } else {
165 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
166 core->board.mpeg );
167 return -EINVAL;
168 }
169
170 /* reset counter */
171 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
172 q->count = 1;
173
174 /* enable irqs */
175 dprintk( 1, "setting the interrupt mask\n" );
176 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
177 cx_set(MO_TS_INTMSK, 0x1f0011);
178
179 /* start dma */
180 cx_set(MO_DEV_CNTRL2, (1<<5));
181 cx_set(MO_TS_DMACNTRL, 0x11);
182 return 0;
183 }
184
185 static int cx8802_stop_dma(struct cx8802_dev *dev)
186 {
187 struct cx88_core *core = dev->core;
188 dprintk( 1, "cx8802_stop_dma\n" );
189
190 /* stop dma */
191 cx_clear(MO_TS_DMACNTRL, 0x11);
192
193 /* disable irqs */
194 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
195 cx_clear(MO_TS_INTMSK, 0x1f0011);
196
197 /* Reset the controller */
198 cx_write(TS_GEN_CNTRL, 0xcd);
199 return 0;
200 }
201
202 static int cx8802_restart_queue(struct cx8802_dev *dev,
203 struct cx88_dmaqueue *q)
204 {
205 struct cx88_buffer *buf;
206
207 dprintk( 1, "cx8802_restart_queue\n" );
208 if (list_empty(&q->active))
209 {
210 struct cx88_buffer *prev;
211 prev = NULL;
212
213 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
214
215 for (;;) {
216 if (list_empty(&q->queued))
217 return 0;
218 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
219 if (NULL == prev) {
220 list_del(&buf->vb.queue);
221 list_add_tail(&buf->vb.queue,&q->active);
222 cx8802_start_dma(dev, q, buf);
223 buf->vb.state = VIDEOBUF_ACTIVE;
224 buf->count = q->count++;
225 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
226 dprintk(1,"[%p/%d] restart_queue - first active\n",
227 buf,buf->vb.i);
228
229 } else if (prev->vb.width == buf->vb.width &&
230 prev->vb.height == buf->vb.height &&
231 prev->fmt == buf->fmt) {
232 list_del(&buf->vb.queue);
233 list_add_tail(&buf->vb.queue,&q->active);
234 buf->vb.state = VIDEOBUF_ACTIVE;
235 buf->count = q->count++;
236 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
237 dprintk(1,"[%p/%d] restart_queue - move to active\n",
238 buf,buf->vb.i);
239 } else {
240 return 0;
241 }
242 prev = buf;
243 }
244 return 0;
245 }
246
247 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
248 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
249 buf, buf->vb.i);
250 cx8802_start_dma(dev, q, buf);
251 list_for_each_entry(buf, &q->active, vb.queue)
252 buf->count = q->count++;
253 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
254 return 0;
255 }
256
257 /* ------------------------------------------------------------------ */
258
259 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
260 struct cx88_buffer *buf, enum v4l2_field field)
261 {
262 int size = dev->ts_packet_size * dev->ts_packet_count;
263 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
264 int rc;
265
266 dprintk(1, "%s: %p\n", __func__, buf);
267 if (0 != buf->vb.baddr && buf->vb.bsize < size)
268 return -EINVAL;
269
270 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
271 buf->vb.width = dev->ts_packet_size;
272 buf->vb.height = dev->ts_packet_count;
273 buf->vb.size = size;
274 buf->vb.field = field /*V4L2_FIELD_TOP*/;
275
276 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
277 goto fail;
278 cx88_risc_databuffer(dev->pci, &buf->risc,
279 dma->sglist,
280 buf->vb.width, buf->vb.height, 0);
281 }
282 buf->vb.state = VIDEOBUF_PREPARED;
283 return 0;
284
285 fail:
286 cx88_free_buffer(q,buf);
287 return rc;
288 }
289
290 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
291 {
292 struct cx88_buffer *prev;
293 struct cx88_dmaqueue *cx88q = &dev->mpegq;
294
295 dprintk( 1, "cx8802_buf_queue\n" );
296 /* add jump to stopper */
297 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
298 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
299
300 if (list_empty(&cx88q->active)) {
301 dprintk( 1, "queue is empty - first active\n" );
302 list_add_tail(&buf->vb.queue,&cx88q->active);
303 cx8802_start_dma(dev, cx88q, buf);
304 buf->vb.state = VIDEOBUF_ACTIVE;
305 buf->count = cx88q->count++;
306 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
307 dprintk(1,"[%p/%d] %s - first active\n",
308 buf, buf->vb.i, __func__);
309
310 } else {
311 dprintk( 1, "queue is not empty - append to active\n" );
312 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
313 list_add_tail(&buf->vb.queue,&cx88q->active);
314 buf->vb.state = VIDEOBUF_ACTIVE;
315 buf->count = cx88q->count++;
316 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
317 dprintk( 1, "[%p/%d] %s - append to active\n",
318 buf, buf->vb.i, __func__);
319 }
320 }
321
322 /* ----------------------------------------------------------- */
323
324 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
325 {
326 struct cx88_dmaqueue *q = &dev->mpegq;
327 struct cx88_buffer *buf;
328 unsigned long flags;
329
330 spin_lock_irqsave(&dev->slock,flags);
331 while (!list_empty(&q->active)) {
332 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
333 list_del(&buf->vb.queue);
334 buf->vb.state = VIDEOBUF_ERROR;
335 wake_up(&buf->vb.done);
336 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
337 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
338 }
339 if (restart)
340 {
341 dprintk(1, "restarting queue\n" );
342 cx8802_restart_queue(dev,q);
343 }
344 spin_unlock_irqrestore(&dev->slock,flags);
345 }
346
347 void cx8802_cancel_buffers(struct cx8802_dev *dev)
348 {
349 struct cx88_dmaqueue *q = &dev->mpegq;
350
351 dprintk( 1, "cx8802_cancel_buffers" );
352 del_timer_sync(&q->timeout);
353 cx8802_stop_dma(dev);
354 do_cancel_buffers(dev,"cancel",0);
355 }
356
357 static void cx8802_timeout(unsigned long data)
358 {
359 struct cx8802_dev *dev = (struct cx8802_dev*)data;
360
361 dprintk(1, "%s\n",__func__);
362
363 if (debug)
364 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
365 cx8802_stop_dma(dev);
366 do_cancel_buffers(dev,"timeout",1);
367 }
368
369 static const char * cx88_mpeg_irqs[32] = {
370 "ts_risci1", NULL, NULL, NULL,
371 "ts_risci2", NULL, NULL, NULL,
372 "ts_oflow", NULL, NULL, NULL,
373 "ts_sync", NULL, NULL, NULL,
374 "opc_err", "par_err", "rip_err", "pci_abort",
375 "ts_err?",
376 };
377
378 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
379 {
380 struct cx88_core *core = dev->core;
381 u32 status, mask, count;
382
383 dprintk( 1, "cx8802_mpeg_irq\n" );
384 status = cx_read(MO_TS_INTSTAT);
385 mask = cx_read(MO_TS_INTMSK);
386 if (0 == (status & mask))
387 return;
388
389 cx_write(MO_TS_INTSTAT, status);
390
391 if (debug || (status & mask & ~0xff))
392 cx88_print_irqbits(core->name, "irq mpeg ",
393 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
394 status, mask);
395
396 /* risc op code error */
397 if (status & (1 << 16)) {
398 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
399 cx_clear(MO_TS_DMACNTRL, 0x11);
400 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
401 }
402
403 /* risc1 y */
404 if (status & 0x01) {
405 dprintk( 1, "wake up\n" );
406 spin_lock(&dev->slock);
407 count = cx_read(MO_TS_GPCNT);
408 cx88_wakeup(dev->core, &dev->mpegq, count);
409 spin_unlock(&dev->slock);
410 }
411
412 /* risc2 y */
413 if (status & 0x10) {
414 spin_lock(&dev->slock);
415 cx8802_restart_queue(dev,&dev->mpegq);
416 spin_unlock(&dev->slock);
417 }
418
419 /* other general errors */
420 if (status & 0x1f0100) {
421 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
422 spin_lock(&dev->slock);
423 cx8802_stop_dma(dev);
424 cx8802_restart_queue(dev,&dev->mpegq);
425 spin_unlock(&dev->slock);
426 }
427 }
428
429 #define MAX_IRQ_LOOP 10
430
431 static irqreturn_t cx8802_irq(int irq, void *dev_id)
432 {
433 struct cx8802_dev *dev = dev_id;
434 struct cx88_core *core = dev->core;
435 u32 status;
436 int loop, handled = 0;
437
438 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
439 status = cx_read(MO_PCI_INTSTAT) &
440 (core->pci_irqmask | PCI_INT_TSINT);
441 if (0 == status)
442 goto out;
443 dprintk( 1, "cx8802_irq\n" );
444 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
445 dprintk( 1, " status: %d\n", status );
446 handled = 1;
447 cx_write(MO_PCI_INTSTAT, status);
448
449 if (status & core->pci_irqmask)
450 cx88_core_irq(core,status);
451 if (status & PCI_INT_TSINT)
452 cx8802_mpeg_irq(dev);
453 };
454 if (MAX_IRQ_LOOP == loop) {
455 dprintk( 0, "clearing mask\n" );
456 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
457 core->name);
458 cx_write(MO_PCI_INTMSK,0);
459 }
460
461 out:
462 return IRQ_RETVAL(handled);
463 }
464
465 static int cx8802_init_common(struct cx8802_dev *dev)
466 {
467 struct cx88_core *core = dev->core;
468 int err;
469
470 /* pci init */
471 if (pci_enable_device(dev->pci))
472 return -EIO;
473 pci_set_master(dev->pci);
474 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
475 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
476 return -EIO;
477 }
478
479 dev->pci_rev = dev->pci->revision;
480 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
481 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
482 "latency: %d, mmio: 0x%llx\n", dev->core->name,
483 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
484 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
485
486 /* initialize driver struct */
487 spin_lock_init(&dev->slock);
488
489 /* init dma queue */
490 INIT_LIST_HEAD(&dev->mpegq.active);
491 INIT_LIST_HEAD(&dev->mpegq.queued);
492 dev->mpegq.timeout.function = cx8802_timeout;
493 dev->mpegq.timeout.data = (unsigned long)dev;
494 init_timer(&dev->mpegq.timeout);
495 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
496 MO_TS_DMACNTRL,0x11,0x00);
497
498 /* get irq */
499 err = request_irq(dev->pci->irq, cx8802_irq,
500 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
501 if (err < 0) {
502 printk(KERN_ERR "%s: can't get IRQ %d\n",
503 dev->core->name, dev->pci->irq);
504 return err;
505 }
506 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
507
508 /* everything worked */
509 pci_set_drvdata(dev->pci,dev);
510 return 0;
511 }
512
513 static void cx8802_fini_common(struct cx8802_dev *dev)
514 {
515 dprintk( 2, "cx8802_fini_common\n" );
516 cx8802_stop_dma(dev);
517 pci_disable_device(dev->pci);
518
519 /* unregister stuff */
520 free_irq(dev->pci->irq, dev);
521 pci_set_drvdata(dev->pci, NULL);
522
523 /* free memory */
524 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
525 }
526
527 /* ----------------------------------------------------------- */
528
529 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
530 {
531 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
532 struct cx88_core *core = dev->core;
533
534 /* stop mpeg dma */
535 spin_lock(&dev->slock);
536 if (!list_empty(&dev->mpegq.active)) {
537 dprintk( 2, "suspend\n" );
538 printk("%s: suspend mpeg\n", core->name);
539 cx8802_stop_dma(dev);
540 del_timer(&dev->mpegq.timeout);
541 }
542 spin_unlock(&dev->slock);
543
544 /* FIXME -- shutdown device */
545 cx88_shutdown(dev->core);
546
547 pci_save_state(pci_dev);
548 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
549 pci_disable_device(pci_dev);
550 dev->state.disabled = 1;
551 }
552 return 0;
553 }
554
555 static int cx8802_resume_common(struct pci_dev *pci_dev)
556 {
557 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
558 struct cx88_core *core = dev->core;
559 int err;
560
561 if (dev->state.disabled) {
562 err=pci_enable_device(pci_dev);
563 if (err) {
564 printk(KERN_ERR "%s: can't enable device\n",
565 dev->core->name);
566 return err;
567 }
568 dev->state.disabled = 0;
569 }
570 err=pci_set_power_state(pci_dev, PCI_D0);
571 if (err) {
572 printk(KERN_ERR "%s: can't enable device\n",
573 dev->core->name);
574 pci_disable_device(pci_dev);
575 dev->state.disabled = 1;
576
577 return err;
578 }
579 pci_restore_state(pci_dev);
580
581 /* FIXME: re-initialize hardware */
582 cx88_reset(dev->core);
583
584 /* restart video+vbi capture */
585 spin_lock(&dev->slock);
586 if (!list_empty(&dev->mpegq.active)) {
587 printk("%s: resume mpeg\n", core->name);
588 cx8802_restart_queue(dev,&dev->mpegq);
589 }
590 spin_unlock(&dev->slock);
591
592 return 0;
593 }
594
595 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
596 {
597 struct cx8802_driver *d;
598
599 list_for_each_entry(d, &dev->drvlist, drvlist)
600 if (d->type_id == btype)
601 return d;
602
603 return NULL;
604 }
605
606 /* Driver asked for hardware access. */
607 static int cx8802_request_acquire(struct cx8802_driver *drv)
608 {
609 struct cx88_core *core = drv->core;
610 unsigned int i;
611
612 /* Fail a request for hardware if the device is busy. */
613 if (core->active_type_id != CX88_BOARD_NONE &&
614 core->active_type_id != drv->type_id)
615 return -EBUSY;
616
617 if (drv->type_id == CX88_MPEG_DVB) {
618 /* When switching to DVB, always set the input to the tuner */
619 core->last_analog_input = core->input;
620 core->input = 0;
621 for (i = 0;
622 i < (sizeof(core->board.input) / sizeof(struct cx88_input));
623 i++) {
624 if (core->board.input[i].type == CX88_VMUX_DVB) {
625 core->input = i;
626 break;
627 }
628 }
629 }
630
631 if (drv->advise_acquire)
632 {
633 core->active_ref++;
634 if (core->active_type_id == CX88_BOARD_NONE) {
635 core->active_type_id = drv->type_id;
636 drv->advise_acquire(drv);
637 }
638
639 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
640 }
641
642 return 0;
643 }
644
645 /* Driver asked to release hardware. */
646 static int cx8802_request_release(struct cx8802_driver *drv)
647 {
648 struct cx88_core *core = drv->core;
649
650 if (drv->advise_release && --core->active_ref == 0)
651 {
652 if (drv->type_id == CX88_MPEG_DVB) {
653 /* If the DVB driver is releasing, reset the input
654 state to the last configured analog input */
655 core->input = core->last_analog_input;
656 }
657
658 drv->advise_release(drv);
659 core->active_type_id = CX88_BOARD_NONE;
660 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
661 }
662
663 return 0;
664 }
665
666 static int cx8802_check_driver(struct cx8802_driver *drv)
667 {
668 if (drv == NULL)
669 return -ENODEV;
670
671 if ((drv->type_id != CX88_MPEG_DVB) &&
672 (drv->type_id != CX88_MPEG_BLACKBIRD))
673 return -EINVAL;
674
675 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
676 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
677 return -EINVAL;
678
679 if ((drv->probe == NULL) ||
680 (drv->remove == NULL) ||
681 (drv->advise_acquire == NULL) ||
682 (drv->advise_release == NULL))
683 return -EINVAL;
684
685 return 0;
686 }
687
688 int cx8802_register_driver(struct cx8802_driver *drv)
689 {
690 struct cx8802_dev *dev;
691 struct cx8802_driver *driver;
692 int err, i = 0;
693
694 printk(KERN_INFO
695 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
696 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
697 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
698
699 if ((err = cx8802_check_driver(drv)) != 0) {
700 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
701 return err;
702 }
703
704 mutex_lock(&cx8802_mutex);
705
706 list_for_each_entry(dev, &cx8802_devlist, devlist) {
707 printk(KERN_INFO
708 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
709 dev->core->name, dev->pci->subsystem_vendor,
710 dev->pci->subsystem_device, dev->core->board.name,
711 dev->core->boardnr);
712
713 /* Bring up a new struct for each driver instance */
714 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
715 if (driver == NULL) {
716 err = -ENOMEM;
717 goto out;
718 }
719
720 /* Snapshot of the driver registration data */
721 drv->core = dev->core;
722 drv->suspend = cx8802_suspend_common;
723 drv->resume = cx8802_resume_common;
724 drv->request_acquire = cx8802_request_acquire;
725 drv->request_release = cx8802_request_release;
726 memcpy(driver, drv, sizeof(*driver));
727
728 mutex_lock(&drv->core->lock);
729 err = drv->probe(driver);
730 if (err == 0) {
731 i++;
732 list_add_tail(&driver->drvlist, &dev->drvlist);
733 } else {
734 printk(KERN_ERR
735 "%s/2: cx8802 probe failed, err = %d\n",
736 dev->core->name, err);
737 }
738 mutex_unlock(&drv->core->lock);
739 }
740
741 err = i ? 0 : -ENODEV;
742 out:
743 mutex_unlock(&cx8802_mutex);
744 return err;
745 }
746
747 int cx8802_unregister_driver(struct cx8802_driver *drv)
748 {
749 struct cx8802_dev *dev;
750 struct cx8802_driver *d, *dtmp;
751 int err = 0;
752
753 printk(KERN_INFO
754 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
755 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
756 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
757
758 mutex_lock(&cx8802_mutex);
759
760 list_for_each_entry(dev, &cx8802_devlist, devlist) {
761 printk(KERN_INFO
762 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
763 dev->core->name, dev->pci->subsystem_vendor,
764 dev->pci->subsystem_device, dev->core->board.name,
765 dev->core->boardnr);
766
767 mutex_lock(&dev->core->lock);
768
769 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
770 /* only unregister the correct driver type */
771 if (d->type_id != drv->type_id)
772 continue;
773
774 err = d->remove(d);
775 if (err == 0) {
776 list_del(&d->drvlist);
777 kfree(d);
778 } else
779 printk(KERN_ERR "%s/2: cx8802 driver remove "
780 "failed (%d)\n", dev->core->name, err);
781 }
782
783 mutex_unlock(&dev->core->lock);
784 }
785
786 mutex_unlock(&cx8802_mutex);
787
788 return err;
789 }
790
791 /* ----------------------------------------------------------- */
792 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
793 const struct pci_device_id *pci_id)
794 {
795 struct cx8802_dev *dev;
796 struct cx88_core *core;
797 int err;
798
799 /* general setup */
800 core = cx88_core_get(pci_dev);
801 if (NULL == core)
802 return -EINVAL;
803
804 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
805
806 err = -ENODEV;
807 if (!core->board.mpeg)
808 goto fail_core;
809
810 err = -ENOMEM;
811 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
812 if (NULL == dev)
813 goto fail_core;
814 dev->pci = pci_dev;
815 dev->core = core;
816
817 /* Maintain a reference so cx88-video can query the 8802 device. */
818 core->dvbdev = dev;
819
820 err = cx8802_init_common(dev);
821 if (err != 0)
822 goto fail_free;
823
824 INIT_LIST_HEAD(&dev->drvlist);
825 mutex_lock(&cx8802_mutex);
826 list_add_tail(&dev->devlist,&cx8802_devlist);
827 mutex_unlock(&cx8802_mutex);
828
829 /* now autoload cx88-dvb or cx88-blackbird */
830 request_modules(dev);
831 return 0;
832
833 fail_free:
834 kfree(dev);
835 fail_core:
836 core->dvbdev = NULL;
837 cx88_core_put(core,pci_dev);
838 return err;
839 }
840
841 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
842 {
843 struct cx8802_dev *dev;
844
845 dev = pci_get_drvdata(pci_dev);
846
847 dprintk( 1, "%s\n", __func__);
848
849 flush_request_modules(dev);
850
851 mutex_lock(&dev->core->lock);
852
853 if (!list_empty(&dev->drvlist)) {
854 struct cx8802_driver *drv, *tmp;
855 int err;
856
857 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
858 "while cx8802 sub-drivers still loaded?!\n",
859 dev->core->name);
860
861 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
862 err = drv->remove(drv);
863 if (err == 0) {
864 list_del(&drv->drvlist);
865 } else
866 printk(KERN_ERR "%s/2: cx8802 driver remove "
867 "failed (%d)\n", dev->core->name, err);
868 kfree(drv);
869 }
870 }
871
872 mutex_unlock(&dev->core->lock);
873
874 /* Destroy any 8802 reference. */
875 dev->core->dvbdev = NULL;
876
877 /* common */
878 cx8802_fini_common(dev);
879 cx88_core_put(dev->core,dev->pci);
880 kfree(dev);
881 }
882
883 static const struct pci_device_id cx8802_pci_tbl[] = {
884 {
885 .vendor = 0x14f1,
886 .device = 0x8802,
887 .subvendor = PCI_ANY_ID,
888 .subdevice = PCI_ANY_ID,
889 },{
890 /* --- end of list --- */
891 }
892 };
893 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
894
895 static struct pci_driver cx8802_pci_driver = {
896 .name = "cx88-mpeg driver manager",
897 .id_table = cx8802_pci_tbl,
898 .probe = cx8802_probe,
899 .remove = __devexit_p(cx8802_remove),
900 };
901
902 static int __init cx8802_init(void)
903 {
904 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %s loaded\n",
905 CX88_VERSION);
906 return pci_register_driver(&cx8802_pci_driver);
907 }
908
909 static void __exit cx8802_fini(void)
910 {
911 pci_unregister_driver(&cx8802_pci_driver);
912 }
913
914 module_init(cx8802_init);
915 module_exit(cx8802_fini);
916 EXPORT_SYMBOL(cx8802_buf_prepare);
917 EXPORT_SYMBOL(cx8802_buf_queue);
918 EXPORT_SYMBOL(cx8802_cancel_buffers);
919
920 EXPORT_SYMBOL(cx8802_register_driver);
921 EXPORT_SYMBOL(cx8802_unregister_driver);
922 EXPORT_SYMBOL(cx8802_get_driver);
923 /* ----------------------------------------------------------- */
924 /*
925 * Local variables:
926 * c-basic-offset: 8
927 * End:
928 * 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
929 */
Linux kernel - Deliverables
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