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Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/roste...
[GitHub/mt8127/android_kernel_alcatel_ttab.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
43 static unsigned int debug;
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 (dev->core->board.mpeg & CX88_MPEG_DVB)
59 request_module("cx88-dvb");
60 if (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
70 static void flush_request_modules(struct cx8802_dev *dev)
71 {
72 flush_work_sync(&dev->request_module_wk);
73 }
74 #else
75 #define request_modules(dev)
76 #define flush_request_modules(dev)
77 #endif /* CONFIG_MODULES */
78
79
80 static LIST_HEAD(cx8802_devlist);
81 static DEFINE_MUTEX(cx8802_mutex);
82 /* ------------------------------------------------------------------ */
83
84 static int cx8802_start_dma(struct cx8802_dev *dev,
85 struct cx88_dmaqueue *q,
86 struct cx88_buffer *buf)
87 {
88 struct cx88_core *core = dev->core;
89
90 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
91 buf->vb.width, buf->vb.height, buf->vb.field);
92
93 /* setup fifo + format */
94 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
95 dev->ts_packet_size, buf->risc.dma);
96
97 /* write TS length to chip */
98 cx_write(MO_TS_LNGTH, buf->vb.width);
99
100 /* FIXME: this needs a review.
101 * also: move to cx88-blackbird + cx88-dvb source files? */
102
103 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
104
105 if ( (core->active_type_id == CX88_MPEG_DVB) &&
106 (core->board.mpeg & CX88_MPEG_DVB) ) {
107
108 dprintk( 1, "cx8802_start_dma doing .dvb\n");
109 /* negedge driven & software reset */
110 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
111 udelay(100);
112 cx_write(MO_PINMUX_IO, 0x00);
113 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
114 switch (core->boardnr) {
115 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
116 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
117 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
118 case CX88_BOARD_PCHDTV_HD5500:
119 cx_write(TS_SOP_STAT, 1<<13);
120 break;
121 case CX88_BOARD_SAMSUNG_SMT_7020:
122 cx_write(TS_SOP_STAT, 0x00);
123 break;
124 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
125 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
126 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
127 udelay(100);
128 break;
129 case CX88_BOARD_HAUPPAUGE_HVR1300:
130 /* Enable MPEG parallel IO and video signal pins */
131 cx_write(MO_PINMUX_IO, 0x88);
132 cx_write(TS_SOP_STAT, 0);
133 cx_write(TS_VALERR_CNTRL, 0);
134 break;
135 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
136 /* Enable MPEG parallel IO and video signal pins */
137 cx_write(MO_PINMUX_IO, 0x88);
138 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
139 dev->ts_gen_cntrl = 5;
140 cx_write(TS_SOP_STAT, 0);
141 cx_write(TS_VALERR_CNTRL, 0);
142 udelay(100);
143 break;
144 default:
145 cx_write(TS_SOP_STAT, 0x00);
146 break;
147 }
148 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
149 udelay(100);
150 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
151 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
152 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
153 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
154
155 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
156 udelay(100);
157
158 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
159 cx_write(TS_VALERR_CNTRL, 0x2000);
160
161 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
162 udelay(100);
163 } else {
164 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
165 core->board.mpeg );
166 return -EINVAL;
167 }
168
169 /* reset counter */
170 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
171 q->count = 1;
172
173 /* enable irqs */
174 dprintk( 1, "setting the interrupt mask\n" );
175 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
176 cx_set(MO_TS_INTMSK, 0x1f0011);
177
178 /* start dma */
179 cx_set(MO_DEV_CNTRL2, (1<<5));
180 cx_set(MO_TS_DMACNTRL, 0x11);
181 return 0;
182 }
183
184 static int cx8802_stop_dma(struct cx8802_dev *dev)
185 {
186 struct cx88_core *core = dev->core;
187 dprintk( 1, "cx8802_stop_dma\n" );
188
189 /* stop dma */
190 cx_clear(MO_TS_DMACNTRL, 0x11);
191
192 /* disable irqs */
193 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
194 cx_clear(MO_TS_INTMSK, 0x1f0011);
195
196 /* Reset the controller */
197 cx_write(TS_GEN_CNTRL, 0xcd);
198 return 0;
199 }
200
201 static int cx8802_restart_queue(struct cx8802_dev *dev,
202 struct cx88_dmaqueue *q)
203 {
204 struct cx88_buffer *buf;
205
206 dprintk( 1, "cx8802_restart_queue\n" );
207 if (list_empty(&q->active))
208 {
209 struct cx88_buffer *prev;
210 prev = NULL;
211
212 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
213
214 for (;;) {
215 if (list_empty(&q->queued))
216 return 0;
217 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
218 if (NULL == prev) {
219 list_del(&buf->vb.queue);
220 list_add_tail(&buf->vb.queue,&q->active);
221 cx8802_start_dma(dev, q, buf);
222 buf->vb.state = VIDEOBUF_ACTIVE;
223 buf->count = q->count++;
224 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
225 dprintk(1,"[%p/%d] restart_queue - first active\n",
226 buf,buf->vb.i);
227
228 } else if (prev->vb.width == buf->vb.width &&
229 prev->vb.height == buf->vb.height &&
230 prev->fmt == buf->fmt) {
231 list_del(&buf->vb.queue);
232 list_add_tail(&buf->vb.queue,&q->active);
233 buf->vb.state = VIDEOBUF_ACTIVE;
234 buf->count = q->count++;
235 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
236 dprintk(1,"[%p/%d] restart_queue - move to active\n",
237 buf,buf->vb.i);
238 } else {
239 return 0;
240 }
241 prev = buf;
242 }
243 return 0;
244 }
245
246 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
247 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
248 buf, buf->vb.i);
249 cx8802_start_dma(dev, q, buf);
250 list_for_each_entry(buf, &q->active, vb.queue)
251 buf->count = q->count++;
252 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
253 return 0;
254 }
255
256 /* ------------------------------------------------------------------ */
257
258 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
259 struct cx88_buffer *buf, enum v4l2_field field)
260 {
261 int size = dev->ts_packet_size * dev->ts_packet_count;
262 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
263 int rc;
264
265 dprintk(1, "%s: %p\n", __func__, buf);
266 if (0 != buf->vb.baddr && buf->vb.bsize < size)
267 return -EINVAL;
268
269 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
270 buf->vb.width = dev->ts_packet_size;
271 buf->vb.height = dev->ts_packet_count;
272 buf->vb.size = size;
273 buf->vb.field = field /*V4L2_FIELD_TOP*/;
274
275 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
276 goto fail;
277 cx88_risc_databuffer(dev->pci, &buf->risc,
278 dma->sglist,
279 buf->vb.width, buf->vb.height, 0);
280 }
281 buf->vb.state = VIDEOBUF_PREPARED;
282 return 0;
283
284 fail:
285 cx88_free_buffer(q,buf);
286 return rc;
287 }
288
289 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
290 {
291 struct cx88_buffer *prev;
292 struct cx88_dmaqueue *cx88q = &dev->mpegq;
293
294 dprintk( 1, "cx8802_buf_queue\n" );
295 /* add jump to stopper */
296 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
297 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
298
299 if (list_empty(&cx88q->active)) {
300 dprintk( 1, "queue is empty - first active\n" );
301 list_add_tail(&buf->vb.queue,&cx88q->active);
302 cx8802_start_dma(dev, cx88q, buf);
303 buf->vb.state = VIDEOBUF_ACTIVE;
304 buf->count = cx88q->count++;
305 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
306 dprintk(1,"[%p/%d] %s - first active\n",
307 buf, buf->vb.i, __func__);
308
309 } else {
310 dprintk( 1, "queue is not empty - append to active\n" );
311 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
312 list_add_tail(&buf->vb.queue,&cx88q->active);
313 buf->vb.state = VIDEOBUF_ACTIVE;
314 buf->count = cx88q->count++;
315 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
316 dprintk( 1, "[%p/%d] %s - append to active\n",
317 buf, buf->vb.i, __func__);
318 }
319 }
320
321 /* ----------------------------------------------------------- */
322
323 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
324 {
325 struct cx88_dmaqueue *q = &dev->mpegq;
326 struct cx88_buffer *buf;
327 unsigned long flags;
328
329 spin_lock_irqsave(&dev->slock,flags);
330 while (!list_empty(&q->active)) {
331 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
332 list_del(&buf->vb.queue);
333 buf->vb.state = VIDEOBUF_ERROR;
334 wake_up(&buf->vb.done);
335 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
336 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
337 }
338 if (restart)
339 {
340 dprintk(1, "restarting queue\n" );
341 cx8802_restart_queue(dev,q);
342 }
343 spin_unlock_irqrestore(&dev->slock,flags);
344 }
345
346 void cx8802_cancel_buffers(struct cx8802_dev *dev)
347 {
348 struct cx88_dmaqueue *q = &dev->mpegq;
349
350 dprintk( 1, "cx8802_cancel_buffers" );
351 del_timer_sync(&q->timeout);
352 cx8802_stop_dma(dev);
353 do_cancel_buffers(dev,"cancel",0);
354 }
355
356 static void cx8802_timeout(unsigned long data)
357 {
358 struct cx8802_dev *dev = (struct cx8802_dev*)data;
359
360 dprintk(1, "%s\n",__func__);
361
362 if (debug)
363 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
364 cx8802_stop_dma(dev);
365 do_cancel_buffers(dev,"timeout",1);
366 }
367
368 static const char * cx88_mpeg_irqs[32] = {
369 "ts_risci1", NULL, NULL, NULL,
370 "ts_risci2", NULL, NULL, NULL,
371 "ts_oflow", NULL, NULL, NULL,
372 "ts_sync", NULL, NULL, NULL,
373 "opc_err", "par_err", "rip_err", "pci_abort",
374 "ts_err?",
375 };
376
377 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
378 {
379 struct cx88_core *core = dev->core;
380 u32 status, mask, count;
381
382 dprintk( 1, "cx8802_mpeg_irq\n" );
383 status = cx_read(MO_TS_INTSTAT);
384 mask = cx_read(MO_TS_INTMSK);
385 if (0 == (status & mask))
386 return;
387
388 cx_write(MO_TS_INTSTAT, status);
389
390 if (debug || (status & mask & ~0xff))
391 cx88_print_irqbits(core->name, "irq mpeg ",
392 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
393 status, mask);
394
395 /* risc op code error */
396 if (status & (1 << 16)) {
397 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
398 cx_clear(MO_TS_DMACNTRL, 0x11);
399 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
400 }
401
402 /* risc1 y */
403 if (status & 0x01) {
404 dprintk( 1, "wake up\n" );
405 spin_lock(&dev->slock);
406 count = cx_read(MO_TS_GPCNT);
407 cx88_wakeup(dev->core, &dev->mpegq, count);
408 spin_unlock(&dev->slock);
409 }
410
411 /* risc2 y */
412 if (status & 0x10) {
413 spin_lock(&dev->slock);
414 cx8802_restart_queue(dev,&dev->mpegq);
415 spin_unlock(&dev->slock);
416 }
417
418 /* other general errors */
419 if (status & 0x1f0100) {
420 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
421 spin_lock(&dev->slock);
422 cx8802_stop_dma(dev);
423 cx8802_restart_queue(dev,&dev->mpegq);
424 spin_unlock(&dev->slock);
425 }
426 }
427
428 #define MAX_IRQ_LOOP 10
429
430 static irqreturn_t cx8802_irq(int irq, void *dev_id)
431 {
432 struct cx8802_dev *dev = dev_id;
433 struct cx88_core *core = dev->core;
434 u32 status;
435 int loop, handled = 0;
436
437 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
438 status = cx_read(MO_PCI_INTSTAT) &
439 (core->pci_irqmask | PCI_INT_TSINT);
440 if (0 == status)
441 goto out;
442 dprintk( 1, "cx8802_irq\n" );
443 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
444 dprintk( 1, " status: %d\n", status );
445 handled = 1;
446 cx_write(MO_PCI_INTSTAT, status);
447
448 if (status & core->pci_irqmask)
449 cx88_core_irq(core,status);
450 if (status & PCI_INT_TSINT)
451 cx8802_mpeg_irq(dev);
452 };
453 if (MAX_IRQ_LOOP == loop) {
454 dprintk( 0, "clearing mask\n" );
455 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
456 core->name);
457 cx_write(MO_PCI_INTMSK,0);
458 }
459
460 out:
461 return IRQ_RETVAL(handled);
462 }
463
464 static int cx8802_init_common(struct cx8802_dev *dev)
465 {
466 struct cx88_core *core = dev->core;
467 int err;
468
469 /* pci init */
470 if (pci_enable_device(dev->pci))
471 return -EIO;
472 pci_set_master(dev->pci);
473 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
474 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
475 return -EIO;
476 }
477
478 dev->pci_rev = dev->pci->revision;
479 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
480 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
481 "latency: %d, mmio: 0x%llx\n", dev->core->name,
482 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
483 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
484
485 /* initialize driver struct */
486 spin_lock_init(&dev->slock);
487
488 /* init dma queue */
489 INIT_LIST_HEAD(&dev->mpegq.active);
490 INIT_LIST_HEAD(&dev->mpegq.queued);
491 dev->mpegq.timeout.function = cx8802_timeout;
492 dev->mpegq.timeout.data = (unsigned long)dev;
493 init_timer(&dev->mpegq.timeout);
494 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
495 MO_TS_DMACNTRL,0x11,0x00);
496
497 /* get irq */
498 err = request_irq(dev->pci->irq, cx8802_irq,
499 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
500 if (err < 0) {
501 printk(KERN_ERR "%s: can't get IRQ %d\n",
502 dev->core->name, dev->pci->irq);
503 return err;
504 }
505 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
506
507 /* everything worked */
508 pci_set_drvdata(dev->pci,dev);
509 return 0;
510 }
511
512 static void cx8802_fini_common(struct cx8802_dev *dev)
513 {
514 dprintk( 2, "cx8802_fini_common\n" );
515 cx8802_stop_dma(dev);
516 pci_disable_device(dev->pci);
517
518 /* unregister stuff */
519 free_irq(dev->pci->irq, dev);
520 pci_set_drvdata(dev->pci, NULL);
521
522 /* free memory */
523 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
524 }
525
526 /* ----------------------------------------------------------- */
527
528 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
529 {
530 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
531 struct cx88_core *core = dev->core;
532
533 /* stop mpeg dma */
534 spin_lock(&dev->slock);
535 if (!list_empty(&dev->mpegq.active)) {
536 dprintk( 2, "suspend\n" );
537 printk("%s: suspend mpeg\n", core->name);
538 cx8802_stop_dma(dev);
539 del_timer(&dev->mpegq.timeout);
540 }
541 spin_unlock(&dev->slock);
542
543 /* FIXME -- shutdown device */
544 cx88_shutdown(dev->core);
545
546 pci_save_state(pci_dev);
547 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
548 pci_disable_device(pci_dev);
549 dev->state.disabled = 1;
550 }
551 return 0;
552 }
553
554 static int cx8802_resume_common(struct pci_dev *pci_dev)
555 {
556 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
557 struct cx88_core *core = dev->core;
558 int err;
559
560 if (dev->state.disabled) {
561 err=pci_enable_device(pci_dev);
562 if (err) {
563 printk(KERN_ERR "%s: can't enable device\n",
564 dev->core->name);
565 return err;
566 }
567 dev->state.disabled = 0;
568 }
569 err=pci_set_power_state(pci_dev, PCI_D0);
570 if (err) {
571 printk(KERN_ERR "%s: can't enable device\n",
572 dev->core->name);
573 pci_disable_device(pci_dev);
574 dev->state.disabled = 1;
575
576 return err;
577 }
578 pci_restore_state(pci_dev);
579
580 /* FIXME: re-initialize hardware */
581 cx88_reset(dev->core);
582
583 /* restart video+vbi capture */
584 spin_lock(&dev->slock);
585 if (!list_empty(&dev->mpegq.active)) {
586 printk("%s: resume mpeg\n", core->name);
587 cx8802_restart_queue(dev,&dev->mpegq);
588 }
589 spin_unlock(&dev->slock);
590
591 return 0;
592 }
593
594 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
595 {
596 struct cx8802_driver *d;
597
598 list_for_each_entry(d, &dev->drvlist, drvlist)
599 if (d->type_id == btype)
600 return d;
601
602 return NULL;
603 }
604
605 /* Driver asked for hardware access. */
606 static int cx8802_request_acquire(struct cx8802_driver *drv)
607 {
608 struct cx88_core *core = drv->core;
609 unsigned int i;
610
611 /* Fail a request for hardware if the device is busy. */
612 if (core->active_type_id != CX88_BOARD_NONE &&
613 core->active_type_id != drv->type_id)
614 return -EBUSY;
615
616 core->input = 0;
617 for (i = 0;
618 i < (sizeof(core->board.input) / sizeof(struct cx88_input));
619 i++) {
620 if (core->board.input[i].type == CX88_VMUX_DVB) {
621 core->input = i;
622 break;
623 }
624 }
625
626 if (drv->advise_acquire)
627 {
628 core->active_ref++;
629 if (core->active_type_id == CX88_BOARD_NONE) {
630 core->active_type_id = drv->type_id;
631 drv->advise_acquire(drv);
632 }
633
634 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
635 }
636
637 return 0;
638 }
639
640 /* Driver asked to release hardware. */
641 static int cx8802_request_release(struct cx8802_driver *drv)
642 {
643 struct cx88_core *core = drv->core;
644
645 if (drv->advise_release && --core->active_ref == 0)
646 {
647 drv->advise_release(drv);
648 core->active_type_id = CX88_BOARD_NONE;
649 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
650 }
651
652 return 0;
653 }
654
655 static int cx8802_check_driver(struct cx8802_driver *drv)
656 {
657 if (drv == NULL)
658 return -ENODEV;
659
660 if ((drv->type_id != CX88_MPEG_DVB) &&
661 (drv->type_id != CX88_MPEG_BLACKBIRD))
662 return -EINVAL;
663
664 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
665 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
666 return -EINVAL;
667
668 if ((drv->probe == NULL) ||
669 (drv->remove == NULL) ||
670 (drv->advise_acquire == NULL) ||
671 (drv->advise_release == NULL))
672 return -EINVAL;
673
674 return 0;
675 }
676
677 int cx8802_register_driver(struct cx8802_driver *drv)
678 {
679 struct cx8802_dev *dev;
680 struct cx8802_driver *driver;
681 int err, i = 0;
682
683 printk(KERN_INFO
684 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
685 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
686 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
687
688 if ((err = cx8802_check_driver(drv)) != 0) {
689 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
690 return err;
691 }
692
693 mutex_lock(&cx8802_mutex);
694
695 list_for_each_entry(dev, &cx8802_devlist, devlist) {
696 printk(KERN_INFO
697 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
698 dev->core->name, dev->pci->subsystem_vendor,
699 dev->pci->subsystem_device, dev->core->board.name,
700 dev->core->boardnr);
701
702 /* Bring up a new struct for each driver instance */
703 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
704 if (driver == NULL) {
705 err = -ENOMEM;
706 goto out;
707 }
708
709 /* Snapshot of the driver registration data */
710 drv->core = dev->core;
711 drv->suspend = cx8802_suspend_common;
712 drv->resume = cx8802_resume_common;
713 drv->request_acquire = cx8802_request_acquire;
714 drv->request_release = cx8802_request_release;
715 memcpy(driver, drv, sizeof(*driver));
716
717 mutex_lock(&drv->core->lock);
718 err = drv->probe(driver);
719 if (err == 0) {
720 i++;
721 list_add_tail(&driver->drvlist, &dev->drvlist);
722 } else {
723 printk(KERN_ERR
724 "%s/2: cx8802 probe failed, err = %d\n",
725 dev->core->name, err);
726 }
727 mutex_unlock(&drv->core->lock);
728 }
729
730 err = i ? 0 : -ENODEV;
731 out:
732 mutex_unlock(&cx8802_mutex);
733 return err;
734 }
735
736 int cx8802_unregister_driver(struct cx8802_driver *drv)
737 {
738 struct cx8802_dev *dev;
739 struct cx8802_driver *d, *dtmp;
740 int err = 0;
741
742 printk(KERN_INFO
743 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
744 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
745 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
746
747 mutex_lock(&cx8802_mutex);
748
749 list_for_each_entry(dev, &cx8802_devlist, devlist) {
750 printk(KERN_INFO
751 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
752 dev->core->name, dev->pci->subsystem_vendor,
753 dev->pci->subsystem_device, dev->core->board.name,
754 dev->core->boardnr);
755
756 mutex_lock(&dev->core->lock);
757
758 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
759 /* only unregister the correct driver type */
760 if (d->type_id != drv->type_id)
761 continue;
762
763 err = d->remove(d);
764 if (err == 0) {
765 list_del(&d->drvlist);
766 kfree(d);
767 } else
768 printk(KERN_ERR "%s/2: cx8802 driver remove "
769 "failed (%d)\n", dev->core->name, err);
770 }
771
772 mutex_unlock(&dev->core->lock);
773 }
774
775 mutex_unlock(&cx8802_mutex);
776
777 return err;
778 }
779
780 /* ----------------------------------------------------------- */
781 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
782 const struct pci_device_id *pci_id)
783 {
784 struct cx8802_dev *dev;
785 struct cx88_core *core;
786 int err;
787
788 /* general setup */
789 core = cx88_core_get(pci_dev);
790 if (NULL == core)
791 return -EINVAL;
792
793 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
794
795 err = -ENODEV;
796 if (!core->board.mpeg)
797 goto fail_core;
798
799 err = -ENOMEM;
800 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
801 if (NULL == dev)
802 goto fail_core;
803 dev->pci = pci_dev;
804 dev->core = core;
805
806 /* Maintain a reference so cx88-video can query the 8802 device. */
807 core->dvbdev = dev;
808
809 err = cx8802_init_common(dev);
810 if (err != 0)
811 goto fail_free;
812
813 INIT_LIST_HEAD(&dev->drvlist);
814 mutex_lock(&cx8802_mutex);
815 list_add_tail(&dev->devlist,&cx8802_devlist);
816 mutex_unlock(&cx8802_mutex);
817
818 /* now autoload cx88-dvb or cx88-blackbird */
819 request_modules(dev);
820 return 0;
821
822 fail_free:
823 kfree(dev);
824 fail_core:
825 core->dvbdev = NULL;
826 cx88_core_put(core,pci_dev);
827 return err;
828 }
829
830 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
831 {
832 struct cx8802_dev *dev;
833
834 dev = pci_get_drvdata(pci_dev);
835
836 dprintk( 1, "%s\n", __func__);
837
838 flush_request_modules(dev);
839
840 mutex_lock(&dev->core->lock);
841
842 if (!list_empty(&dev->drvlist)) {
843 struct cx8802_driver *drv, *tmp;
844 int err;
845
846 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
847 "while cx8802 sub-drivers still loaded?!\n",
848 dev->core->name);
849
850 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
851 err = drv->remove(drv);
852 if (err == 0) {
853 list_del(&drv->drvlist);
854 } else
855 printk(KERN_ERR "%s/2: cx8802 driver remove "
856 "failed (%d)\n", dev->core->name, err);
857 kfree(drv);
858 }
859 }
860
861 mutex_unlock(&dev->core->lock);
862
863 /* Destroy any 8802 reference. */
864 dev->core->dvbdev = NULL;
865
866 /* common */
867 cx8802_fini_common(dev);
868 cx88_core_put(dev->core,dev->pci);
869 kfree(dev);
870 }
871
872 static const struct pci_device_id cx8802_pci_tbl[] = {
873 {
874 .vendor = 0x14f1,
875 .device = 0x8802,
876 .subvendor = PCI_ANY_ID,
877 .subdevice = PCI_ANY_ID,
878 },{
879 /* --- end of list --- */
880 }
881 };
882 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
883
884 static struct pci_driver cx8802_pci_driver = {
885 .name = "cx88-mpeg driver manager",
886 .id_table = cx8802_pci_tbl,
887 .probe = cx8802_probe,
888 .remove = __devexit_p(cx8802_remove),
889 };
890
891 static int __init cx8802_init(void)
892 {
893 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
894 (CX88_VERSION_CODE >> 16) & 0xff,
895 (CX88_VERSION_CODE >> 8) & 0xff,
896 CX88_VERSION_CODE & 0xff);
897 #ifdef SNAPSHOT
898 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
899 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
900 #endif
901 return pci_register_driver(&cx8802_pci_driver);
902 }
903
904 static void __exit cx8802_fini(void)
905 {
906 pci_unregister_driver(&cx8802_pci_driver);
907 }
908
909 module_init(cx8802_init);
910 module_exit(cx8802_fini);
911 EXPORT_SYMBOL(cx8802_buf_prepare);
912 EXPORT_SYMBOL(cx8802_buf_queue);
913 EXPORT_SYMBOL(cx8802_cancel_buffers);
914
915 EXPORT_SYMBOL(cx8802_register_driver);
916 EXPORT_SYMBOL(cx8802_unregister_driver);
917 EXPORT_SYMBOL(cx8802_get_driver);
918 /* ----------------------------------------------------------- */
919 /*
920 * Local variables:
921 * c-basic-offset: 8
922 * End:
923 * 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
924 */
kernel source for telekom puls (alcatel/mediatek)