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trivial: media/video/cx88: add __init/__exit macros to cx88 drivers
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / media / video / cx88 / cx88-mpeg.c
blobde9ff0fc741f06611e11bd5220d0c78331b912c5
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/init.h>
27 #include <linux/device.h>
28 #include <linux/dma-mapping.h>
29 #include <linux/interrupt.h>
30 #include <asm/delay.h>
31
32 #include "cx88.h"
33
34 /* ------------------------------------------------------------------ */
35
36 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
37 MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
38 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
40 MODULE_LICENSE("GPL");
41
42 static unsigned int debug;
43 module_param(debug,int,0644);
44 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
45
46 #define dprintk(level,fmt, arg...) if (debug >= level) \
47 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
48
49 #define mpeg_dbg(level,fmt, arg...) if (debug >= level) \
50 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
51
52 #if defined(CONFIG_MODULES) && defined(MODULE)
53 static void request_module_async(struct work_struct *work)
54 {
55 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
56
57 if (dev->core->board.mpeg & CX88_MPEG_DVB)
58 request_module("cx88-dvb");
59 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
60 request_module("cx88-blackbird");
61 }
62
63 static void request_modules(struct cx8802_dev *dev)
64 {
65 INIT_WORK(&dev->request_module_wk, request_module_async);
66 schedule_work(&dev->request_module_wk);
67 }
68 #else
69 #define request_modules(dev)
70 #endif /* CONFIG_MODULES */
71
72
73 static LIST_HEAD(cx8802_devlist);
74 /* ------------------------------------------------------------------ */
75
76 static int cx8802_start_dma(struct cx8802_dev *dev,
77 struct cx88_dmaqueue *q,
78 struct cx88_buffer *buf)
79 {
80 struct cx88_core *core = dev->core;
81
82 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
83 buf->vb.width, buf->vb.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 (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->boardnr) {
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 /* Enable MPEG parallel IO and video signal pins */
120 cx_write(MO_PINMUX_IO, 0x88);
121 cx_write(TS_SOP_STAT, 0);
122 cx_write(TS_VALERR_CNTRL, 0);
123 break;
124 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
125 /* Enable MPEG parallel IO and video signal pins */
126 cx_write(MO_PINMUX_IO, 0x88);
127 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
128 dev->ts_gen_cntrl = 5;
129 cx_write(TS_SOP_STAT, 0);
130 cx_write(TS_VALERR_CNTRL, 0);
131 udelay(100);
132 break;
133 default:
134 cx_write(TS_SOP_STAT, 0x00);
135 break;
136 }
137 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
138 udelay(100);
139 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
140 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
141 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
142 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
143
144 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
145 udelay(100);
146
147 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
148 cx_write(TS_VALERR_CNTRL, 0x2000);
149
150 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
151 udelay(100);
152 } else {
153 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
154 core->board.mpeg );
155 return -EINVAL;
156 }
157
158 /* reset counter */
159 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
160 q->count = 1;
161
162 /* enable irqs */
163 dprintk( 1, "setting the interrupt mask\n" );
164 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
165 cx_set(MO_TS_INTMSK, 0x1f0011);
166
167 /* start dma */
168 cx_set(MO_DEV_CNTRL2, (1<<5));
169 cx_set(MO_TS_DMACNTRL, 0x11);
170 return 0;
171 }
172
173 static int cx8802_stop_dma(struct cx8802_dev *dev)
174 {
175 struct cx88_core *core = dev->core;
176 dprintk( 1, "cx8802_stop_dma\n" );
177
178 /* stop dma */
179 cx_clear(MO_TS_DMACNTRL, 0x11);
180
181 /* disable irqs */
182 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
183 cx_clear(MO_TS_INTMSK, 0x1f0011);
184
185 /* Reset the controller */
186 cx_write(TS_GEN_CNTRL, 0xcd);
187 return 0;
188 }
189
190 static int cx8802_restart_queue(struct cx8802_dev *dev,
191 struct cx88_dmaqueue *q)
192 {
193 struct cx88_buffer *buf;
194
195 dprintk( 1, "cx8802_restart_queue\n" );
196 if (list_empty(&q->active))
197 {
198 struct cx88_buffer *prev;
199 prev = NULL;
200
201 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
202
203 for (;;) {
204 if (list_empty(&q->queued))
205 return 0;
206 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
207 if (NULL == prev) {
208 list_del(&buf->vb.queue);
209 list_add_tail(&buf->vb.queue,&q->active);
210 cx8802_start_dma(dev, q, buf);
211 buf->vb.state = VIDEOBUF_ACTIVE;
212 buf->count = q->count++;
213 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
214 dprintk(1,"[%p/%d] restart_queue - first active\n",
215 buf,buf->vb.i);
216
217 } else if (prev->vb.width == buf->vb.width &&
218 prev->vb.height == buf->vb.height &&
219 prev->fmt == buf->fmt) {
220 list_del(&buf->vb.queue);
221 list_add_tail(&buf->vb.queue,&q->active);
222 buf->vb.state = VIDEOBUF_ACTIVE;
223 buf->count = q->count++;
224 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
225 dprintk(1,"[%p/%d] restart_queue - move to active\n",
226 buf,buf->vb.i);
227 } else {
228 return 0;
229 }
230 prev = buf;
231 }
232 return 0;
233 }
234
235 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
236 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
237 buf, buf->vb.i);
238 cx8802_start_dma(dev, q, buf);
239 list_for_each_entry(buf, &q->active, vb.queue)
240 buf->count = q->count++;
241 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
242 return 0;
243 }
244
245 /* ------------------------------------------------------------------ */
246
247 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
248 struct cx88_buffer *buf, enum v4l2_field field)
249 {
250 int size = dev->ts_packet_size * dev->ts_packet_count;
251 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
252 int rc;
253
254 dprintk(1, "%s: %p\n", __func__, buf);
255 if (0 != buf->vb.baddr && buf->vb.bsize < size)
256 return -EINVAL;
257
258 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
259 buf->vb.width = dev->ts_packet_size;
260 buf->vb.height = dev->ts_packet_count;
261 buf->vb.size = size;
262 buf->vb.field = field /*V4L2_FIELD_TOP*/;
263
264 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
265 goto fail;
266 cx88_risc_databuffer(dev->pci, &buf->risc,
267 dma->sglist,
268 buf->vb.width, buf->vb.height, 0);
269 }
270 buf->vb.state = VIDEOBUF_PREPARED;
271 return 0;
272
273 fail:
274 cx88_free_buffer(q,buf);
275 return rc;
276 }
277
278 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
279 {
280 struct cx88_buffer *prev;
281 struct cx88_dmaqueue *cx88q = &dev->mpegq;
282
283 dprintk( 1, "cx8802_buf_queue\n" );
284 /* add jump to stopper */
285 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
286 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
287
288 if (list_empty(&cx88q->active)) {
289 dprintk( 1, "queue is empty - first active\n" );
290 list_add_tail(&buf->vb.queue,&cx88q->active);
291 cx8802_start_dma(dev, cx88q, buf);
292 buf->vb.state = VIDEOBUF_ACTIVE;
293 buf->count = cx88q->count++;
294 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
295 dprintk(1,"[%p/%d] %s - first active\n",
296 buf, buf->vb.i, __func__);
297
298 } else {
299 dprintk( 1, "queue is not empty - append to active\n" );
300 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
301 list_add_tail(&buf->vb.queue,&cx88q->active);
302 buf->vb.state = VIDEOBUF_ACTIVE;
303 buf->count = cx88q->count++;
304 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
305 dprintk( 1, "[%p/%d] %s - append to active\n",
306 buf, buf->vb.i, __func__);
307 }
308 }
309
310 /* ----------------------------------------------------------- */
311
312 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
313 {
314 struct cx88_dmaqueue *q = &dev->mpegq;
315 struct cx88_buffer *buf;
316 unsigned long flags;
317
318 spin_lock_irqsave(&dev->slock,flags);
319 while (!list_empty(&q->active)) {
320 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
321 list_del(&buf->vb.queue);
322 buf->vb.state = VIDEOBUF_ERROR;
323 wake_up(&buf->vb.done);
324 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
325 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
326 }
327 if (restart)
328 {
329 dprintk(1, "restarting queue\n" );
330 cx8802_restart_queue(dev,q);
331 }
332 spin_unlock_irqrestore(&dev->slock,flags);
333 }
334
335 void cx8802_cancel_buffers(struct cx8802_dev *dev)
336 {
337 struct cx88_dmaqueue *q = &dev->mpegq;
338
339 dprintk( 1, "cx8802_cancel_buffers" );
340 del_timer_sync(&q->timeout);
341 cx8802_stop_dma(dev);
342 do_cancel_buffers(dev,"cancel",0);
343 }
344
345 static void cx8802_timeout(unsigned long data)
346 {
347 struct cx8802_dev *dev = (struct cx8802_dev*)data;
348
349 dprintk(1, "%s\n",__func__);
350
351 if (debug)
352 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
353 cx8802_stop_dma(dev);
354 do_cancel_buffers(dev,"timeout",1);
355 }
356
357 static char *cx88_mpeg_irqs[32] = {
358 "ts_risci1", NULL, NULL, NULL,
359 "ts_risci2", NULL, NULL, NULL,
360 "ts_oflow", NULL, NULL, NULL,
361 "ts_sync", NULL, NULL, NULL,
362 "opc_err", "par_err", "rip_err", "pci_abort",
363 "ts_err?",
364 };
365
366 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
367 {
368 struct cx88_core *core = dev->core;
369 u32 status, mask, count;
370
371 dprintk( 1, "cx8802_mpeg_irq\n" );
372 status = cx_read(MO_TS_INTSTAT);
373 mask = cx_read(MO_TS_INTMSK);
374 if (0 == (status & mask))
375 return;
376
377 cx_write(MO_TS_INTSTAT, status);
378
379 if (debug || (status & mask & ~0xff))
380 cx88_print_irqbits(core->name, "irq mpeg ",
381 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
382 status, mask);
383
384 /* risc op code error */
385 if (status & (1 << 16)) {
386 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
387 cx_clear(MO_TS_DMACNTRL, 0x11);
388 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
389 }
390
391 /* risc1 y */
392 if (status & 0x01) {
393 dprintk( 1, "wake up\n" );
394 spin_lock(&dev->slock);
395 count = cx_read(MO_TS_GPCNT);
396 cx88_wakeup(dev->core, &dev->mpegq, count);
397 spin_unlock(&dev->slock);
398 }
399
400 /* risc2 y */
401 if (status & 0x10) {
402 spin_lock(&dev->slock);
403 cx8802_restart_queue(dev,&dev->mpegq);
404 spin_unlock(&dev->slock);
405 }
406
407 /* other general errors */
408 if (status & 0x1f0100) {
409 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
410 spin_lock(&dev->slock);
411 cx8802_stop_dma(dev);
412 cx8802_restart_queue(dev,&dev->mpegq);
413 spin_unlock(&dev->slock);
414 }
415 }
416
417 #define MAX_IRQ_LOOP 10
418
419 static irqreturn_t cx8802_irq(int irq, void *dev_id)
420 {
421 struct cx8802_dev *dev = dev_id;
422 struct cx88_core *core = dev->core;
423 u32 status;
424 int loop, handled = 0;
425
426 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
427 status = cx_read(MO_PCI_INTSTAT) &
428 (core->pci_irqmask | PCI_INT_TSINT);
429 if (0 == status)
430 goto out;
431 dprintk( 1, "cx8802_irq\n" );
432 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
433 dprintk( 1, " status: %d\n", status );
434 handled = 1;
435 cx_write(MO_PCI_INTSTAT, status);
436
437 if (status & core->pci_irqmask)
438 cx88_core_irq(core,status);
439 if (status & PCI_INT_TSINT)
440 cx8802_mpeg_irq(dev);
441 };
442 if (MAX_IRQ_LOOP == loop) {
443 dprintk( 0, "clearing mask\n" );
444 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
445 core->name);
446 cx_write(MO_PCI_INTMSK,0);
447 }
448
449 out:
450 return IRQ_RETVAL(handled);
451 }
452
453 static int cx8802_init_common(struct cx8802_dev *dev)
454 {
455 struct cx88_core *core = dev->core;
456 int err;
457
458 /* pci init */
459 if (pci_enable_device(dev->pci))
460 return -EIO;
461 pci_set_master(dev->pci);
462 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
463 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
464 return -EIO;
465 }
466
467 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
468 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
469 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
470 "latency: %d, mmio: 0x%llx\n", dev->core->name,
471 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
472 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
473
474 /* initialize driver struct */
475 spin_lock_init(&dev->slock);
476
477 /* init dma queue */
478 INIT_LIST_HEAD(&dev->mpegq.active);
479 INIT_LIST_HEAD(&dev->mpegq.queued);
480 dev->mpegq.timeout.function = cx8802_timeout;
481 dev->mpegq.timeout.data = (unsigned long)dev;
482 init_timer(&dev->mpegq.timeout);
483 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
484 MO_TS_DMACNTRL,0x11,0x00);
485
486 /* get irq */
487 err = request_irq(dev->pci->irq, cx8802_irq,
488 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
489 if (err < 0) {
490 printk(KERN_ERR "%s: can't get IRQ %d\n",
491 dev->core->name, dev->pci->irq);
492 return err;
493 }
494 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
495
496 /* everything worked */
497 pci_set_drvdata(dev->pci,dev);
498 return 0;
499 }
500
501 static void cx8802_fini_common(struct cx8802_dev *dev)
502 {
503 dprintk( 2, "cx8802_fini_common\n" );
504 cx8802_stop_dma(dev);
505 pci_disable_device(dev->pci);
506
507 /* unregister stuff */
508 free_irq(dev->pci->irq, dev);
509 pci_set_drvdata(dev->pci, NULL);
510
511 /* free memory */
512 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
513 }
514
515 /* ----------------------------------------------------------- */
516
517 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
518 {
519 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
520 struct cx88_core *core = dev->core;
521
522 /* stop mpeg dma */
523 spin_lock(&dev->slock);
524 if (!list_empty(&dev->mpegq.active)) {
525 dprintk( 2, "suspend\n" );
526 printk("%s: suspend mpeg\n", core->name);
527 cx8802_stop_dma(dev);
528 del_timer(&dev->mpegq.timeout);
529 }
530 spin_unlock(&dev->slock);
531
532 /* FIXME -- shutdown device */
533 cx88_shutdown(dev->core);
534
535 pci_save_state(pci_dev);
536 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
537 pci_disable_device(pci_dev);
538 dev->state.disabled = 1;
539 }
540 return 0;
541 }
542
543 static int cx8802_resume_common(struct pci_dev *pci_dev)
544 {
545 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
546 struct cx88_core *core = dev->core;
547 int err;
548
549 if (dev->state.disabled) {
550 err=pci_enable_device(pci_dev);
551 if (err) {
552 printk(KERN_ERR "%s: can't enable device\n",
553 dev->core->name);
554 return err;
555 }
556 dev->state.disabled = 0;
557 }
558 err=pci_set_power_state(pci_dev, PCI_D0);
559 if (err) {
560 printk(KERN_ERR "%s: can't enable device\n",
561 dev->core->name);
562 pci_disable_device(pci_dev);
563 dev->state.disabled = 1;
564
565 return err;
566 }
567 pci_restore_state(pci_dev);
568
569 /* FIXME: re-initialize hardware */
570 cx88_reset(dev->core);
571
572 /* restart video+vbi capture */
573 spin_lock(&dev->slock);
574 if (!list_empty(&dev->mpegq.active)) {
575 printk("%s: resume mpeg\n", core->name);
576 cx8802_restart_queue(dev,&dev->mpegq);
577 }
578 spin_unlock(&dev->slock);
579
580 return 0;
581 }
582
583 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
584 defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
585 struct cx8802_dev *cx8802_get_device(int minor)
586 {
587 struct cx8802_dev *dev;
588
589 list_for_each_entry(dev, &cx8802_devlist, devlist)
590 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
591 return dev;
592
593 return NULL;
594 }
595 EXPORT_SYMBOL(cx8802_get_device);
596 #endif
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
614 /* Fail a request for hardware if the device is busy. */
615 if (core->active_type_id != CX88_BOARD_NONE &&
616 core->active_type_id != drv->type_id)
617 return -EBUSY;
618
619 core->input = CX88_VMUX_DVB;
620
621 if (drv->advise_acquire)
622 {
623 mutex_lock(&drv->core->lock);
624 core->active_ref++;
625 if (core->active_type_id == CX88_BOARD_NONE) {
626 core->active_type_id = drv->type_id;
627 drv->advise_acquire(drv);
628 }
629 mutex_unlock(&drv->core->lock);
630
631 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
632 }
633
634 return 0;
635 }
636
637 /* Driver asked to release hardware. */
638 static int cx8802_request_release(struct cx8802_driver *drv)
639 {
640 struct cx88_core *core = drv->core;
641
642 mutex_lock(&drv->core->lock);
643 if (drv->advise_release && --core->active_ref == 0)
644 {
645 drv->advise_release(drv);
646 core->active_type_id = CX88_BOARD_NONE;
647 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
648 }
649 mutex_unlock(&drv->core->lock);
650
651 return 0;
652 }
653
654 static int cx8802_check_driver(struct cx8802_driver *drv)
655 {
656 if (drv == NULL)
657 return -ENODEV;
658
659 if ((drv->type_id != CX88_MPEG_DVB) &&
660 (drv->type_id != CX88_MPEG_BLACKBIRD))
661 return -EINVAL;
662
663 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
664 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
665 return -EINVAL;
666
667 if ((drv->probe == NULL) ||
668 (drv->remove == NULL) ||
669 (drv->advise_acquire == NULL) ||
670 (drv->advise_release == NULL))
671 return -EINVAL;
672
673 return 0;
674 }
675
676 int cx8802_register_driver(struct cx8802_driver *drv)
677 {
678 struct cx8802_dev *dev;
679 struct cx8802_driver *driver;
680 int err, i = 0;
681
682 printk(KERN_INFO
683 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
684 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
685 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
686
687 if ((err = cx8802_check_driver(drv)) != 0) {
688 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
689 return err;
690 }
691
692 list_for_each_entry(dev, &cx8802_devlist, devlist) {
693 printk(KERN_INFO
694 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
695 dev->core->name, dev->pci->subsystem_vendor,
696 dev->pci->subsystem_device, dev->core->board.name,
697 dev->core->boardnr);
698
699 /* Bring up a new struct for each driver instance */
700 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
701 if (driver == NULL)
702 return -ENOMEM;
703
704 /* Snapshot of the driver registration data */
705 drv->core = dev->core;
706 drv->suspend = cx8802_suspend_common;
707 drv->resume = cx8802_resume_common;
708 drv->request_acquire = cx8802_request_acquire;
709 drv->request_release = cx8802_request_release;
710 memcpy(driver, drv, sizeof(*driver));
711
712 err = drv->probe(driver);
713 if (err == 0) {
714 i++;
715 mutex_lock(&drv->core->lock);
716 list_add_tail(&driver->drvlist, &dev->drvlist);
717 mutex_unlock(&drv->core->lock);
718 } else {
719 printk(KERN_ERR
720 "%s/2: cx8802 probe failed, err = %d\n",
721 dev->core->name, err);
722 }
723
724 }
725
726 return i ? 0 : -ENODEV;
727 }
728
729 int cx8802_unregister_driver(struct cx8802_driver *drv)
730 {
731 struct cx8802_dev *dev;
732 struct cx8802_driver *d, *dtmp;
733 int err = 0;
734
735 printk(KERN_INFO
736 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
737 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
738 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
739
740 list_for_each_entry(dev, &cx8802_devlist, devlist) {
741 printk(KERN_INFO
742 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
743 dev->core->name, dev->pci->subsystem_vendor,
744 dev->pci->subsystem_device, dev->core->board.name,
745 dev->core->boardnr);
746
747 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
748 /* only unregister the correct driver type */
749 if (d->type_id != drv->type_id)
750 continue;
751
752 err = d->remove(d);
753 if (err == 0) {
754 mutex_lock(&drv->core->lock);
755 list_del(&d->drvlist);
756 mutex_unlock(&drv->core->lock);
757 kfree(d);
758 } else
759 printk(KERN_ERR "%s/2: cx8802 driver remove "
760 "failed (%d)\n", dev->core->name, err);
761 }
762
763 }
764
765 return err;
766 }
767
768 /* ----------------------------------------------------------- */
769 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
770 const struct pci_device_id *pci_id)
771 {
772 struct cx8802_dev *dev;
773 struct cx88_core *core;
774 int err;
775
776 /* general setup */
777 core = cx88_core_get(pci_dev);
778 if (NULL == core)
779 return -EINVAL;
780
781 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
782
783 err = -ENODEV;
784 if (!core->board.mpeg)
785 goto fail_core;
786
787 err = -ENOMEM;
788 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
789 if (NULL == dev)
790 goto fail_core;
791 dev->pci = pci_dev;
792 dev->core = core;
793
794 /* Maintain a reference so cx88-video can query the 8802 device. */
795 core->dvbdev = dev;
796
797 err = cx8802_init_common(dev);
798 if (err != 0)
799 goto fail_free;
800
801 INIT_LIST_HEAD(&dev->drvlist);
802 list_add_tail(&dev->devlist,&cx8802_devlist);
803
804 /* now autoload cx88-dvb or cx88-blackbird */
805 request_modules(dev);
806 return 0;
807
808 fail_free:
809 kfree(dev);
810 fail_core:
811 core->dvbdev = NULL;
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
820 dev = pci_get_drvdata(pci_dev);
821
822 dprintk( 1, "%s\n", __func__);
823
824 if (!list_empty(&dev->drvlist)) {
825 struct cx8802_driver *drv, *tmp;
826 int err;
827
828 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
829 "while cx8802 sub-drivers still loaded?!\n",
830 dev->core->name);
831
832 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
833 err = drv->remove(drv);
834 if (err == 0) {
835 mutex_lock(&drv->core->lock);
836 list_del(&drv->drvlist);
837 mutex_unlock(&drv->core->lock);
838 } else
839 printk(KERN_ERR "%s/2: cx8802 driver remove "
840 "failed (%d)\n", dev->core->name, err);
841 kfree(drv);
842 }
843 }
844
845 /* Destroy any 8802 reference. */
846 dev->core->dvbdev = NULL;
847
848 /* common */
849 cx8802_fini_common(dev);
850 cx88_core_put(dev->core,dev->pci);
851 kfree(dev);
852 }
853
854 static struct pci_device_id cx8802_pci_tbl[] = {
855 {
856 .vendor = 0x14f1,
857 .device = 0x8802,
858 .subvendor = PCI_ANY_ID,
859 .subdevice = PCI_ANY_ID,
860 },{
861 /* --- end of list --- */
862 }
863 };
864 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
865
866 static struct pci_driver cx8802_pci_driver = {
867 .name = "cx88-mpeg driver manager",
868 .id_table = cx8802_pci_tbl,
869 .probe = cx8802_probe,
870 .remove = __devexit_p(cx8802_remove),
871 };
872
873 static int __init cx8802_init(void)
874 {
875 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
876 (CX88_VERSION_CODE >> 16) & 0xff,
877 (CX88_VERSION_CODE >> 8) & 0xff,
878 CX88_VERSION_CODE & 0xff);
879 #ifdef SNAPSHOT
880 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
881 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
882 #endif
883 return pci_register_driver(&cx8802_pci_driver);
884 }
885
886 static void __exit cx8802_fini(void)
887 {
888 pci_unregister_driver(&cx8802_pci_driver);
889 }
890
891 module_init(cx8802_init);
892 module_exit(cx8802_fini);
893 EXPORT_SYMBOL(cx8802_buf_prepare);
894 EXPORT_SYMBOL(cx8802_buf_queue);
895 EXPORT_SYMBOL(cx8802_cancel_buffers);
896
897 EXPORT_SYMBOL(cx8802_register_driver);
898 EXPORT_SYMBOL(cx8802_unregister_driver);
899 EXPORT_SYMBOL(cx8802_get_driver);
900 /* ----------------------------------------------------------- */
901 /*
902 * Local variables:
903 * c-basic-offset: 8
904 * End:
905 * 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
906 */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree