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V4L/DVB (5912): Clean up duplicate includes in drivers/media/
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / media / video / cx88 / cx88-mpeg.c
blobc34158d9dcc187c3a6d94bd48fe4708967b03a50
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.8m.com>
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/moduleparam.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.8m.com>");
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
43 static unsigned int debug = 0;
44 module_param(debug,int,0644);
45 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
46
47 #define dprintk(level,fmt, arg...) if (debug >= level) \
48 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
49
50 #define mpeg_dbg(level,fmt, arg...) if (debug >= level) \
51 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
52
53 #if defined(CONFIG_MODULES) && defined(MODULE)
54 static void request_module_async(struct work_struct *work)
55 {
56 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
57
58 if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
59 request_module("cx88-dvb");
60 if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_BLACKBIRD)
61 request_module("cx88-blackbird");
62 }
63
64 static void request_modules(struct cx8802_dev *dev)
65 {
66 INIT_WORK(&dev->request_module_wk, request_module_async);
67 schedule_work(&dev->request_module_wk);
68 }
69 #else
70 #define request_modules(dev)
71 #endif /* CONFIG_MODULES */
72
73
74 static LIST_HEAD(cx8802_devlist);
75 /* ------------------------------------------------------------------ */
76
77 static int cx8802_start_dma(struct cx8802_dev *dev,
78 struct cx88_dmaqueue *q,
79 struct cx88_buffer *buf)
80 {
81 struct cx88_core *core = dev->core;
82
83 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
84
85 /* setup fifo + format */
86 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
87 dev->ts_packet_size, buf->risc.dma);
88
89 /* write TS length to chip */
90 cx_write(MO_TS_LNGTH, buf->vb.width);
91
92 /* FIXME: this needs a review.
93 * also: move to cx88-blackbird + cx88-dvb source files? */
94
95 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
96
97 if ( (core->active_type_id == CX88_MPEG_DVB) &&
98 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
99
100 dprintk( 1, "cx8802_start_dma doing .dvb\n");
101 /* negedge driven & software reset */
102 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
103 udelay(100);
104 cx_write(MO_PINMUX_IO, 0x00);
105 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
106 switch (core->board) {
107 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
108 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
109 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
110 case CX88_BOARD_PCHDTV_HD5500:
111 cx_write(TS_SOP_STAT, 1<<13);
112 break;
113 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
114 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
115 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
116 udelay(100);
117 break;
118 case CX88_BOARD_HAUPPAUGE_HVR1300:
119 break;
120 default:
121 cx_write(TS_SOP_STAT, 0x00);
122 break;
123 }
124 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
125 udelay(100);
126 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
127 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
128 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
129 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
130
131 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
132 udelay(100);
133
134 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
135 cx_write(TS_VALERR_CNTRL, 0x2000);
136
137 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
138 udelay(100);
139 } else {
140 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
141 cx88_boards[core->board].mpeg );
142 return -EINVAL;
143 }
144
145 /* reset counter */
146 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
147 q->count = 1;
148
149 /* enable irqs */
150 dprintk( 1, "setting the interrupt mask\n" );
151 cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
152 cx_set(MO_TS_INTMSK, 0x1f0011);
153
154 /* start dma */
155 cx_set(MO_DEV_CNTRL2, (1<<5));
156 cx_set(MO_TS_DMACNTRL, 0x11);
157 return 0;
158 }
159
160 static int cx8802_stop_dma(struct cx8802_dev *dev)
161 {
162 struct cx88_core *core = dev->core;
163 dprintk( 1, "cx8802_stop_dma\n" );
164
165 /* stop dma */
166 cx_clear(MO_TS_DMACNTRL, 0x11);
167
168 /* disable irqs */
169 cx_clear(MO_PCI_INTMSK, 0x000004);
170 cx_clear(MO_TS_INTMSK, 0x1f0011);
171
172 /* Reset the controller */
173 cx_write(TS_GEN_CNTRL, 0xcd);
174 return 0;
175 }
176
177 static int cx8802_restart_queue(struct cx8802_dev *dev,
178 struct cx88_dmaqueue *q)
179 {
180 struct cx88_buffer *buf;
181 struct list_head *item;
182
183 dprintk( 1, "cx8802_restart_queue\n" );
184 if (list_empty(&q->active))
185 {
186 struct cx88_buffer *prev;
187 prev = NULL;
188
189 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
190
191 for (;;) {
192 if (list_empty(&q->queued))
193 return 0;
194 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
195 if (NULL == prev) {
196 list_del(&buf->vb.queue);
197 list_add_tail(&buf->vb.queue,&q->active);
198 cx8802_start_dma(dev, q, buf);
199 buf->vb.state = STATE_ACTIVE;
200 buf->count = q->count++;
201 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
202 dprintk(1,"[%p/%d] restart_queue - first active\n",
203 buf,buf->vb.i);
204
205 } else if (prev->vb.width == buf->vb.width &&
206 prev->vb.height == buf->vb.height &&
207 prev->fmt == buf->fmt) {
208 list_del(&buf->vb.queue);
209 list_add_tail(&buf->vb.queue,&q->active);
210 buf->vb.state = STATE_ACTIVE;
211 buf->count = q->count++;
212 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
213 dprintk(1,"[%p/%d] restart_queue - move to active\n",
214 buf,buf->vb.i);
215 } else {
216 return 0;
217 }
218 prev = buf;
219 }
220 return 0;
221 }
222
223 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
224 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
225 buf, buf->vb.i);
226 cx8802_start_dma(dev, q, buf);
227 list_for_each(item,&q->active) {
228 buf = list_entry(item, struct cx88_buffer, vb.queue);
229 buf->count = q->count++;
230 }
231 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
232 return 0;
233 }
234
235 /* ------------------------------------------------------------------ */
236
237 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
238 struct cx88_buffer *buf, enum v4l2_field field)
239 {
240 int size = dev->ts_packet_size * dev->ts_packet_count;
241 int rc;
242
243 dprintk(1, "%s: %p\n", __FUNCTION__, buf);
244 if (0 != buf->vb.baddr && buf->vb.bsize < size)
245 return -EINVAL;
246
247 if (STATE_NEEDS_INIT == buf->vb.state) {
248 buf->vb.width = dev->ts_packet_size;
249 buf->vb.height = dev->ts_packet_count;
250 buf->vb.size = size;
251 buf->vb.field = field /*V4L2_FIELD_TOP*/;
252
253 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
254 goto fail;
255 cx88_risc_databuffer(dev->pci, &buf->risc,
256 buf->vb.dma.sglist,
257 buf->vb.width, buf->vb.height);
258 }
259 buf->vb.state = STATE_PREPARED;
260 return 0;
261
262 fail:
263 cx88_free_buffer(q,buf);
264 return rc;
265 }
266
267 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
268 {
269 struct cx88_buffer *prev;
270 struct cx88_dmaqueue *cx88q = &dev->mpegq;
271
272 dprintk( 1, "cx8802_buf_queue\n" );
273 /* add jump to stopper */
274 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
275 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
276
277 if (list_empty(&cx88q->active)) {
278 dprintk( 1, "queue is empty - first active\n" );
279 list_add_tail(&buf->vb.queue,&cx88q->active);
280 cx8802_start_dma(dev, cx88q, buf);
281 buf->vb.state = STATE_ACTIVE;
282 buf->count = cx88q->count++;
283 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
284 dprintk(1,"[%p/%d] %s - first active\n",
285 buf, buf->vb.i, __FUNCTION__);
286
287 } else {
288 dprintk( 1, "queue is not empty - append to active\n" );
289 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
290 list_add_tail(&buf->vb.queue,&cx88q->active);
291 buf->vb.state = STATE_ACTIVE;
292 buf->count = cx88q->count++;
293 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
294 dprintk( 1, "[%p/%d] %s - append to active\n",
295 buf, buf->vb.i, __FUNCTION__);
296 }
297 }
298
299 /* ----------------------------------------------------------- */
300
301 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
302 {
303 struct cx88_dmaqueue *q = &dev->mpegq;
304 struct cx88_buffer *buf;
305 unsigned long flags;
306
307 spin_lock_irqsave(&dev->slock,flags);
308 while (!list_empty(&q->active)) {
309 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
310 list_del(&buf->vb.queue);
311 buf->vb.state = STATE_ERROR;
312 wake_up(&buf->vb.done);
313 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
314 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
315 }
316 if (restart)
317 {
318 dprintk(1, "restarting queue\n" );
319 cx8802_restart_queue(dev,q);
320 }
321 spin_unlock_irqrestore(&dev->slock,flags);
322 }
323
324 void cx8802_cancel_buffers(struct cx8802_dev *dev)
325 {
326 struct cx88_dmaqueue *q = &dev->mpegq;
327
328 dprintk( 1, "cx8802_cancel_buffers" );
329 del_timer_sync(&q->timeout);
330 cx8802_stop_dma(dev);
331 do_cancel_buffers(dev,"cancel",0);
332 }
333
334 static void cx8802_timeout(unsigned long data)
335 {
336 struct cx8802_dev *dev = (struct cx8802_dev*)data;
337
338 dprintk(1, "%s\n",__FUNCTION__);
339
340 if (debug)
341 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
342 cx8802_stop_dma(dev);
343 do_cancel_buffers(dev,"timeout",1);
344 }
345
346 static char *cx88_mpeg_irqs[32] = {
347 "ts_risci1", NULL, NULL, NULL,
348 "ts_risci2", NULL, NULL, NULL,
349 "ts_oflow", NULL, NULL, NULL,
350 "ts_sync", NULL, NULL, NULL,
351 "opc_err", "par_err", "rip_err", "pci_abort",
352 "ts_err?",
353 };
354
355 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
356 {
357 struct cx88_core *core = dev->core;
358 u32 status, mask, count;
359
360 dprintk( 1, "cx8802_mpeg_irq\n" );
361 status = cx_read(MO_TS_INTSTAT);
362 mask = cx_read(MO_TS_INTMSK);
363 if (0 == (status & mask))
364 return;
365
366 cx_write(MO_TS_INTSTAT, status);
367
368 if (debug || (status & mask & ~0xff))
369 cx88_print_irqbits(core->name, "irq mpeg ",
370 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
371 status, mask);
372
373 /* risc op code error */
374 if (status & (1 << 16)) {
375 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
376 cx_clear(MO_TS_DMACNTRL, 0x11);
377 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
378 }
379
380 /* risc1 y */
381 if (status & 0x01) {
382 dprintk( 1, "wake up\n" );
383 spin_lock(&dev->slock);
384 count = cx_read(MO_TS_GPCNT);
385 cx88_wakeup(dev->core, &dev->mpegq, count);
386 spin_unlock(&dev->slock);
387 }
388
389 /* risc2 y */
390 if (status & 0x10) {
391 spin_lock(&dev->slock);
392 cx8802_restart_queue(dev,&dev->mpegq);
393 spin_unlock(&dev->slock);
394 }
395
396 /* other general errors */
397 if (status & 0x1f0100) {
398 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
399 spin_lock(&dev->slock);
400 cx8802_stop_dma(dev);
401 cx8802_restart_queue(dev,&dev->mpegq);
402 spin_unlock(&dev->slock);
403 }
404 }
405
406 #define MAX_IRQ_LOOP 10
407
408 static irqreturn_t cx8802_irq(int irq, void *dev_id)
409 {
410 struct cx8802_dev *dev = dev_id;
411 struct cx88_core *core = dev->core;
412 u32 status;
413 int loop, handled = 0;
414
415 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
416 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
417 if (0 == status)
418 goto out;
419 dprintk( 1, "cx8802_irq\n" );
420 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
421 dprintk( 1, " status: %d\n", status );
422 handled = 1;
423 cx_write(MO_PCI_INTSTAT, status);
424
425 if (status & core->pci_irqmask)
426 cx88_core_irq(core,status);
427 if (status & 0x04)
428 cx8802_mpeg_irq(dev);
429 };
430 if (MAX_IRQ_LOOP == loop) {
431 dprintk( 0, "clearing mask\n" );
432 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
433 core->name);
434 cx_write(MO_PCI_INTMSK,0);
435 }
436
437 out:
438 return IRQ_RETVAL(handled);
439 }
440
441 /* ----------------------------------------------------------- */
442 /* exported stuff */
443
444 int cx8802_init_common(struct cx8802_dev *dev)
445 {
446 struct cx88_core *core = dev->core;
447 int err;
448
449 /* pci init */
450 if (pci_enable_device(dev->pci))
451 return -EIO;
452 pci_set_master(dev->pci);
453 if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
454 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
455 return -EIO;
456 }
457
458 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
459 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
460 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
461 "latency: %d, mmio: 0x%llx\n", dev->core->name,
462 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
463 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
464
465 /* initialize driver struct */
466 spin_lock_init(&dev->slock);
467
468 /* init dma queue */
469 INIT_LIST_HEAD(&dev->mpegq.active);
470 INIT_LIST_HEAD(&dev->mpegq.queued);
471 dev->mpegq.timeout.function = cx8802_timeout;
472 dev->mpegq.timeout.data = (unsigned long)dev;
473 init_timer(&dev->mpegq.timeout);
474 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
475 MO_TS_DMACNTRL,0x11,0x00);
476
477 /* get irq */
478 err = request_irq(dev->pci->irq, cx8802_irq,
479 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
480 if (err < 0) {
481 printk(KERN_ERR "%s: can't get IRQ %d\n",
482 dev->core->name, dev->pci->irq);
483 return err;
484 }
485 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
486
487 /* everything worked */
488 pci_set_drvdata(dev->pci,dev);
489 return 0;
490 }
491
492 void cx8802_fini_common(struct cx8802_dev *dev)
493 {
494 dprintk( 2, "cx8802_fini_common\n" );
495 cx8802_stop_dma(dev);
496 pci_disable_device(dev->pci);
497
498 /* unregister stuff */
499 free_irq(dev->pci->irq, dev);
500 pci_set_drvdata(dev->pci, NULL);
501
502 /* free memory */
503 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
504 }
505
506 /* ----------------------------------------------------------- */
507
508 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
509 {
510 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
511 struct cx88_core *core = dev->core;
512
513 /* stop mpeg dma */
514 spin_lock(&dev->slock);
515 if (!list_empty(&dev->mpegq.active)) {
516 dprintk( 2, "suspend\n" );
517 printk("%s: suspend mpeg\n", core->name);
518 cx8802_stop_dma(dev);
519 del_timer(&dev->mpegq.timeout);
520 }
521 spin_unlock(&dev->slock);
522
523 /* FIXME -- shutdown device */
524 cx88_shutdown(dev->core);
525
526 pci_save_state(pci_dev);
527 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
528 pci_disable_device(pci_dev);
529 dev->state.disabled = 1;
530 }
531 return 0;
532 }
533
534 int cx8802_resume_common(struct pci_dev *pci_dev)
535 {
536 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
537 struct cx88_core *core = dev->core;
538 int err;
539
540 if (dev->state.disabled) {
541 err=pci_enable_device(pci_dev);
542 if (err) {
543 printk(KERN_ERR "%s: can't enable device\n",
544 dev->core->name);
545 return err;
546 }
547 dev->state.disabled = 0;
548 }
549 err=pci_set_power_state(pci_dev, PCI_D0);
550 if (err) {
551 printk(KERN_ERR "%s: can't enable device\n",
552 dev->core->name);
553 pci_disable_device(pci_dev);
554 dev->state.disabled = 1;
555
556 return err;
557 }
558 pci_restore_state(pci_dev);
559
560 /* FIXME: re-initialize hardware */
561 cx88_reset(dev->core);
562
563 /* restart video+vbi capture */
564 spin_lock(&dev->slock);
565 if (!list_empty(&dev->mpegq.active)) {
566 printk("%s: resume mpeg\n", core->name);
567 cx8802_restart_queue(dev,&dev->mpegq);
568 }
569 spin_unlock(&dev->slock);
570
571 return 0;
572 }
573
574 struct cx8802_dev * cx8802_get_device(struct inode *inode)
575 {
576 int minor = iminor(inode);
577 struct cx8802_dev *h = NULL;
578 struct list_head *list;
579
580 list_for_each(list,&cx8802_devlist) {
581 h = list_entry(list, struct cx8802_dev, devlist);
582 if (h->mpeg_dev && h->mpeg_dev->minor == minor)
583 return h;
584 }
585
586 return NULL;
587 }
588
589 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
590 {
591 struct cx8802_dev *h = NULL;
592 struct cx8802_driver *d = NULL;
593 struct list_head *list;
594 struct list_head *list2;
595
596 list_for_each(list,&cx8802_devlist) {
597 h = list_entry(list, struct cx8802_dev, devlist);
598 if (h != dev)
599 continue;
600
601 list_for_each(list2, &h->drvlist.devlist) {
602 d = list_entry(list2, struct cx8802_driver, devlist);
603
604 /* only unregister the correct driver type */
605 if (d->type_id == btype) {
606 return d;
607 }
608 }
609 }
610
611 return NULL;
612 }
613
614 /* Driver asked for hardware access. */
615 static int cx8802_request_acquire(struct cx8802_driver *drv)
616 {
617 struct cx88_core *core = drv->core;
618
619 /* Fail a request for hardware if the device is busy. */
620 if (core->active_type_id != CX88_BOARD_NONE)
621 return -EBUSY;
622
623 if (drv->advise_acquire)
624 {
625 core->active_type_id = drv->type_id;
626 drv->advise_acquire(drv);
627
628 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
629 }
630
631 return 0;
632 }
633
634 /* Driver asked to release hardware. */
635 static int cx8802_request_release(struct cx8802_driver *drv)
636 {
637 struct cx88_core *core = drv->core;
638
639 if (drv->advise_release)
640 {
641 drv->advise_release(drv);
642 core->active_type_id = CX88_BOARD_NONE;
643 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
644 }
645
646 return 0;
647 }
648
649 static int cx8802_check_driver(struct cx8802_driver *drv)
650 {
651 if (drv == NULL)
652 return -ENODEV;
653
654 if ((drv->type_id != CX88_MPEG_DVB) &&
655 (drv->type_id != CX88_MPEG_BLACKBIRD))
656 return -EINVAL;
657
658 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
659 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
660 return -EINVAL;
661
662 if ((drv->probe == NULL) ||
663 (drv->remove == NULL) ||
664 (drv->advise_acquire == NULL) ||
665 (drv->advise_release == NULL))
666 return -EINVAL;
667
668 return 0;
669 }
670
671 int cx8802_register_driver(struct cx8802_driver *drv)
672 {
673 struct cx8802_dev *h;
674 struct cx8802_driver *driver;
675 struct list_head *list;
676 int err = 0, i = 0;
677
678 printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
679 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
680 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
681
682 if ((err = cx8802_check_driver(drv)) != 0) {
683 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
684 return err;
685 }
686
687 list_for_each(list,&cx8802_devlist) {
688 h = list_entry(list, struct cx8802_dev, devlist);
689
690 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
691 h->core->name,h->pci->subsystem_vendor,
692 h->pci->subsystem_device,cx88_boards[h->core->board].name,
693 h->core->board);
694
695 /* Bring up a new struct for each driver instance */
696 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
697 if (driver == NULL)
698 return -ENOMEM;
699
700 /* Snapshot of the driver registration data */
701 drv->core = h->core;
702 drv->suspend = cx8802_suspend_common;
703 drv->resume = cx8802_resume_common;
704 drv->request_acquire = cx8802_request_acquire;
705 drv->request_release = cx8802_request_release;
706 memcpy(driver, drv, sizeof(*driver));
707
708 err = drv->probe(driver);
709 if (err == 0) {
710 i++;
711 mutex_lock(&drv->core->lock);
712 list_add_tail(&driver->devlist,&h->drvlist.devlist);
713 mutex_unlock(&drv->core->lock);
714 } else {
715 printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
716 }
717
718 }
719 if (i == 0)
720 err = -ENODEV;
721 else
722 err = 0;
723
724 return err;
725 }
726
727 int cx8802_unregister_driver(struct cx8802_driver *drv)
728 {
729 struct cx8802_dev *h;
730 struct cx8802_driver *d;
731 struct list_head *list;
732 struct list_head *list2, *q;
733 int err = 0, i = 0;
734
735 printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
736 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
737
738 list_for_each(list,&cx8802_devlist) {
739 i++;
740 h = list_entry(list, struct cx8802_dev, devlist);
741
742 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
743 h->core->name,h->pci->subsystem_vendor,
744 h->pci->subsystem_device,cx88_boards[h->core->board].name,
745 h->core->board);
746
747 list_for_each_safe(list2, q, &h->drvlist.devlist) {
748 d = list_entry(list2, struct cx8802_driver, devlist);
749
750 /* only unregister the correct driver type */
751 if (d->type_id != drv->type_id)
752 continue;
753
754 err = d->remove(d);
755 if (err == 0) {
756 mutex_lock(&drv->core->lock);
757 list_del(list2);
758 mutex_unlock(&drv->core->lock);
759 } else
760 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
761
762 }
763
764 }
765
766 return err;
767 }
768
769 /* ----------------------------------------------------------- */
770 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
771 const struct pci_device_id *pci_id)
772 {
773 struct cx8802_dev *dev;
774 struct cx88_core *core;
775 int err;
776
777 /* general setup */
778 core = cx88_core_get(pci_dev);
779 if (NULL == core)
780 return -EINVAL;
781
782 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
783
784 err = -ENODEV;
785 if (!cx88_boards[core->board].mpeg)
786 goto fail_core;
787
788 err = -ENOMEM;
789 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
790 if (NULL == dev)
791 goto fail_core;
792 dev->pci = pci_dev;
793 dev->core = core;
794
795 err = cx8802_init_common(dev);
796 if (err != 0)
797 goto fail_free;
798
799 INIT_LIST_HEAD(&dev->drvlist.devlist);
800 list_add_tail(&dev->devlist,&cx8802_devlist);
801
802 /* Maintain a reference so cx88-video can query the 8802 device. */
803 core->dvbdev = dev;
804
805 /* now autoload cx88-dvb or cx88-blackbird */
806 request_modules(dev);
807 return 0;
808
809 fail_free:
810 kfree(dev);
811 fail_core:
812 cx88_core_put(core,pci_dev);
813 return err;
814 }
815
816 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
817 {
818 struct cx8802_dev *dev;
819 struct cx8802_driver *h;
820 struct list_head *list;
821
822 dev = pci_get_drvdata(pci_dev);
823
824 dprintk( 1, "%s\n", __FUNCTION__);
825
826 list_for_each(list,&dev->drvlist.devlist) {
827 h = list_entry(list, struct cx8802_driver, devlist);
828 dprintk( 1, " ->driver\n");
829 if (h->remove == NULL) {
830 printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
831 continue;
832 }
833 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
834 cx8802_unregister_driver(h);
835 list_del(&dev->drvlist.devlist);
836 }
837
838 /* Destroy any 8802 reference. */
839 dev->core->dvbdev = NULL;
840
841 /* common */
842 cx8802_fini_common(dev);
843 cx88_core_put(dev->core,dev->pci);
844 kfree(dev);
845 }
846
847 static struct pci_device_id cx8802_pci_tbl[] = {
848 {
849 .vendor = 0x14f1,
850 .device = 0x8802,
851 .subvendor = PCI_ANY_ID,
852 .subdevice = PCI_ANY_ID,
853 },{
854 /* --- end of list --- */
855 }
856 };
857 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
858
859 static struct pci_driver cx8802_pci_driver = {
860 .name = "cx88-mpeg driver manager",
861 .id_table = cx8802_pci_tbl,
862 .probe = cx8802_probe,
863 .remove = __devexit_p(cx8802_remove),
864 };
865
866 static int cx8802_init(void)
867 {
868 printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
869 (CX88_VERSION_CODE >> 16) & 0xff,
870 (CX88_VERSION_CODE >> 8) & 0xff,
871 CX88_VERSION_CODE & 0xff);
872 #ifdef SNAPSHOT
873 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
874 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
875 #endif
876 return pci_register_driver(&cx8802_pci_driver);
877 }
878
879 static void cx8802_fini(void)
880 {
881 pci_unregister_driver(&cx8802_pci_driver);
882 }
883
884 module_init(cx8802_init);
885 module_exit(cx8802_fini);
886 EXPORT_SYMBOL(cx8802_buf_prepare);
887 EXPORT_SYMBOL(cx8802_buf_queue);
888 EXPORT_SYMBOL(cx8802_cancel_buffers);
889
890 EXPORT_SYMBOL(cx8802_init_common);
891 EXPORT_SYMBOL(cx8802_fini_common);
892
893 EXPORT_SYMBOL(cx8802_register_driver);
894 EXPORT_SYMBOL(cx8802_unregister_driver);
895 EXPORT_SYMBOL(cx8802_get_device);
896 EXPORT_SYMBOL(cx8802_get_driver);
897 /* ----------------------------------------------------------- */
898 /*
899 * Local variables:
900 * c-basic-offset: 8
901 * End:
902 * 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
903 */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree