1 /*
2 *
3 * Support for the mpeg transport stream transfers
4 * PCI function #2 of the cx2388x.
5 *
6 * (c) 2004 Jelle Foks <jelle@foks.us>
7 * (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
8 * (c) 2004 Gerd Knorr <kraxel@bytesex.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include <linux/module.h>
26 #include <linux/slab.h>
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/interrupt.h>
31 #include <asm/delay.h>
32
33 #include "cx88.h"
34
35 /* ------------------------------------------------------------------ */
36
37 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
38 MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
39 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
41 MODULE_LICENSE("GPL");
42 MODULE_VERSION(CX88_VERSION);
43
44 static unsigned int debug;
45 module_param(debug,int,0644);
46 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
47
48 #define dprintk(level, fmt, arg...) do { \
49 if (debug + 1 > level) \
50 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg); \
51 } while(0)
52
53 #define mpeg_dbg(level, fmt, arg...) do { \
54 if (debug + 1 > level) \
55 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg); \
56 } while(0)
57
58 #if defined(CONFIG_MODULES) && defined(MODULE)
request_module_async(struct work_struct * work)59 static void request_module_async(struct work_struct *work)
60 {
61 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
62
63 if (dev->core->board.mpeg & CX88_MPEG_DVB)
64 request_module("cx88-dvb");
65 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
66 request_module("cx88-blackbird");
67 }
68
request_modules(struct cx8802_dev * dev)69 static void request_modules(struct cx8802_dev *dev)
70 {
71 INIT_WORK(&dev->request_module_wk, request_module_async);
72 schedule_work(&dev->request_module_wk);
73 }
74
flush_request_modules(struct cx8802_dev * dev)75 static void flush_request_modules(struct cx8802_dev *dev)
76 {
77 flush_work(&dev->request_module_wk);
78 }
79 #else
80 #define request_modules(dev)
81 #define flush_request_modules(dev)
82 #endif /* CONFIG_MODULES */
83
84
85 static LIST_HEAD(cx8802_devlist);
86 static DEFINE_MUTEX(cx8802_mutex);
87 /* ------------------------------------------------------------------ */
88
cx8802_start_dma(struct cx8802_dev * dev,struct cx88_dmaqueue * q,struct cx88_buffer * buf)89 int cx8802_start_dma(struct cx8802_dev *dev,
90 struct cx88_dmaqueue *q,
91 struct cx88_buffer *buf)
92 {
93 struct cx88_core *core = dev->core;
94
95 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
96 core->width, core->height, core->field);
97
98 /* setup fifo + format */
99 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
100 dev->ts_packet_size, buf->risc.dma);
101
102 /* write TS length to chip */
103 cx_write(MO_TS_LNGTH, dev->ts_packet_size);
104
105 /* FIXME: this needs a review.
106 * also: move to cx88-blackbird + cx88-dvb source files? */
107
108 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
109
110 if ( (core->active_type_id == CX88_MPEG_DVB) &&
111 (core->board.mpeg & CX88_MPEG_DVB) ) {
112
113 dprintk( 1, "cx8802_start_dma doing .dvb\n");
114 /* negedge driven & software reset */
115 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
116 udelay(100);
117 cx_write(MO_PINMUX_IO, 0x00);
118 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
119 switch (core->boardnr) {
120 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
121 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
122 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
123 case CX88_BOARD_PCHDTV_HD5500:
124 cx_write(TS_SOP_STAT, 1<<13);
125 break;
126 case CX88_BOARD_SAMSUNG_SMT_7020:
127 cx_write(TS_SOP_STAT, 0x00);
128 break;
129 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
130 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
131 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
132 udelay(100);
133 break;
134 case CX88_BOARD_HAUPPAUGE_HVR1300:
135 /* Enable MPEG parallel IO and video signal pins */
136 cx_write(MO_PINMUX_IO, 0x88);
137 cx_write(TS_SOP_STAT, 0);
138 cx_write(TS_VALERR_CNTRL, 0);
139 break;
140 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
141 /* Enable MPEG parallel IO and video signal pins */
142 cx_write(MO_PINMUX_IO, 0x88);
143 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
144 dev->ts_gen_cntrl = 5;
145 cx_write(TS_SOP_STAT, 0);
146 cx_write(TS_VALERR_CNTRL, 0);
147 udelay(100);
148 break;
149 default:
150 cx_write(TS_SOP_STAT, 0x00);
151 break;
152 }
153 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
154 udelay(100);
155 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
156 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
157 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
158 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
159
160 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
161 udelay(100);
162
163 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
164 cx_write(TS_VALERR_CNTRL, 0x2000);
165
166 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
167 udelay(100);
168 } else {
169 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
170 core->board.mpeg );
171 return -EINVAL;
172 }
173
174 /* reset counter */
175 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
176 q->count = 1;
177
178 /* enable irqs */
179 dprintk( 1, "setting the interrupt mask\n" );
180 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
181 cx_set(MO_TS_INTMSK, 0x1f0011);
182
183 /* start dma */
184 cx_set(MO_DEV_CNTRL2, (1<<5));
185 cx_set(MO_TS_DMACNTRL, 0x11);
186 return 0;
187 }
188
cx8802_stop_dma(struct cx8802_dev * dev)189 static int cx8802_stop_dma(struct cx8802_dev *dev)
190 {
191 struct cx88_core *core = dev->core;
192 dprintk( 1, "cx8802_stop_dma\n" );
193
194 /* stop dma */
195 cx_clear(MO_TS_DMACNTRL, 0x11);
196
197 /* disable irqs */
198 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
199 cx_clear(MO_TS_INTMSK, 0x1f0011);
200
201 /* Reset the controller */
202 cx_write(TS_GEN_CNTRL, 0xcd);
203 return 0;
204 }
205
cx8802_restart_queue(struct cx8802_dev * dev,struct cx88_dmaqueue * q)206 static int cx8802_restart_queue(struct cx8802_dev *dev,
207 struct cx88_dmaqueue *q)
208 {
209 struct cx88_buffer *buf;
210
211 dprintk( 1, "cx8802_restart_queue\n" );
212 if (list_empty(&q->active))
213 return 0;
214
215 buf = list_entry(q->active.next, struct cx88_buffer, list);
216 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
217 buf, buf->vb.v4l2_buf.index);
218 cx8802_start_dma(dev, q, buf);
219 list_for_each_entry(buf, &q->active, list)
220 buf->count = q->count++;
221 return 0;
222 }
223
224 /* ------------------------------------------------------------------ */
225
cx8802_buf_prepare(struct vb2_queue * q,struct cx8802_dev * dev,struct cx88_buffer * buf)226 int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev,
227 struct cx88_buffer *buf)
228 {
229 int size = dev->ts_packet_size * dev->ts_packet_count;
230 struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb, 0);
231 struct cx88_riscmem *risc = &buf->risc;
232 int rc;
233
234 if (vb2_plane_size(&buf->vb, 0) < size)
235 return -EINVAL;
236 vb2_set_plane_payload(&buf->vb, 0, size);
237
238 rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl,
239 dev->ts_packet_size, dev->ts_packet_count, 0);
240 if (rc) {
241 if (risc->cpu)
242 pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
243 memset(risc, 0, sizeof(*risc));
244 return rc;
245 }
246 return 0;
247 }
248
cx8802_buf_queue(struct cx8802_dev * dev,struct cx88_buffer * buf)249 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
250 {
251 struct cx88_buffer *prev;
252 struct cx88_dmaqueue *cx88q = &dev->mpegq;
253
254 dprintk( 1, "cx8802_buf_queue\n" );
255 /* add jump to start */
256 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8);
257 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
258 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8);
259
260 if (list_empty(&cx88q->active)) {
261 dprintk( 1, "queue is empty - first active\n" );
262 list_add_tail(&buf->list, &cx88q->active);
263 buf->count = cx88q->count++;
264 dprintk(1,"[%p/%d] %s - first active\n",
265 buf, buf->vb.v4l2_buf.index, __func__);
266
267 } else {
268 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
269 dprintk( 1, "queue is not empty - append to active\n" );
270 prev = list_entry(cx88q->active.prev, struct cx88_buffer, list);
271 list_add_tail(&buf->list, &cx88q->active);
272 buf->count = cx88q->count++;
273 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
274 dprintk( 1, "[%p/%d] %s - append to active\n",
275 buf, buf->vb.v4l2_buf.index, __func__);
276 }
277 }
278
279 /* ----------------------------------------------------------- */
280
do_cancel_buffers(struct cx8802_dev * dev)281 static void do_cancel_buffers(struct cx8802_dev *dev)
282 {
283 struct cx88_dmaqueue *q = &dev->mpegq;
284 struct cx88_buffer *buf;
285 unsigned long flags;
286
287 spin_lock_irqsave(&dev->slock,flags);
288 while (!list_empty(&q->active)) {
289 buf = list_entry(q->active.next, struct cx88_buffer, list);
290 list_del(&buf->list);
291 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
292 }
293 spin_unlock_irqrestore(&dev->slock,flags);
294 }
295
cx8802_cancel_buffers(struct cx8802_dev * dev)296 void cx8802_cancel_buffers(struct cx8802_dev *dev)
297 {
298 dprintk( 1, "cx8802_cancel_buffers" );
299 cx8802_stop_dma(dev);
300 do_cancel_buffers(dev);
301 }
302
303 static const char * cx88_mpeg_irqs[32] = {
304 "ts_risci1", NULL, NULL, NULL,
305 "ts_risci2", NULL, NULL, NULL,
306 "ts_oflow", NULL, NULL, NULL,
307 "ts_sync", NULL, NULL, NULL,
308 "opc_err", "par_err", "rip_err", "pci_abort",
309 "ts_err?",
310 };
311
cx8802_mpeg_irq(struct cx8802_dev * dev)312 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
313 {
314 struct cx88_core *core = dev->core;
315 u32 status, mask, count;
316
317 dprintk( 1, "cx8802_mpeg_irq\n" );
318 status = cx_read(MO_TS_INTSTAT);
319 mask = cx_read(MO_TS_INTMSK);
320 if (0 == (status & mask))
321 return;
322
323 cx_write(MO_TS_INTSTAT, status);
324
325 if (debug || (status & mask & ~0xff))
326 cx88_print_irqbits(core->name, "irq mpeg ",
327 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
328 status, mask);
329
330 /* risc op code error */
331 if (status & (1 << 16)) {
332 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
333 cx_clear(MO_TS_DMACNTRL, 0x11);
334 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
335 }
336
337 /* risc1 y */
338 if (status & 0x01) {
339 dprintk( 1, "wake up\n" );
340 spin_lock(&dev->slock);
341 count = cx_read(MO_TS_GPCNT);
342 cx88_wakeup(dev->core, &dev->mpegq, count);
343 spin_unlock(&dev->slock);
344 }
345
346 /* other general errors */
347 if (status & 0x1f0100) {
348 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
349 spin_lock(&dev->slock);
350 cx8802_stop_dma(dev);
351 spin_unlock(&dev->slock);
352 }
353 }
354
355 #define MAX_IRQ_LOOP 10
356
cx8802_irq(int irq,void * dev_id)357 static irqreturn_t cx8802_irq(int irq, void *dev_id)
358 {
359 struct cx8802_dev *dev = dev_id;
360 struct cx88_core *core = dev->core;
361 u32 status;
362 int loop, handled = 0;
363
364 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
365 status = cx_read(MO_PCI_INTSTAT) &
366 (core->pci_irqmask | PCI_INT_TSINT);
367 if (0 == status)
368 goto out;
369 dprintk( 1, "cx8802_irq\n" );
370 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
371 dprintk( 1, " status: %d\n", status );
372 handled = 1;
373 cx_write(MO_PCI_INTSTAT, status);
374
375 if (status & core->pci_irqmask)
376 cx88_core_irq(core,status);
377 if (status & PCI_INT_TSINT)
378 cx8802_mpeg_irq(dev);
379 }
380 if (MAX_IRQ_LOOP == loop) {
381 dprintk( 0, "clearing mask\n" );
382 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
383 core->name);
384 cx_write(MO_PCI_INTMSK,0);
385 }
386
387 out:
388 return IRQ_RETVAL(handled);
389 }
390
cx8802_init_common(struct cx8802_dev * dev)391 static int cx8802_init_common(struct cx8802_dev *dev)
392 {
393 struct cx88_core *core = dev->core;
394 int err;
395
396 /* pci init */
397 if (pci_enable_device(dev->pci))
398 return -EIO;
399 pci_set_master(dev->pci);
400 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
401 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
402 return -EIO;
403 }
404
405 dev->pci_rev = dev->pci->revision;
406 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
407 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
408 "latency: %d, mmio: 0x%llx\n", dev->core->name,
409 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
410 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
411
412 /* initialize driver struct */
413 spin_lock_init(&dev->slock);
414
415 /* init dma queue */
416 INIT_LIST_HEAD(&dev->mpegq.active);
417
418 /* get irq */
419 err = request_irq(dev->pci->irq, cx8802_irq,
420 IRQF_SHARED, dev->core->name, dev);
421 if (err < 0) {
422 printk(KERN_ERR "%s: can't get IRQ %d\n",
423 dev->core->name, dev->pci->irq);
424 return err;
425 }
426 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
427
428 /* everything worked */
429 pci_set_drvdata(dev->pci,dev);
430 return 0;
431 }
432
cx8802_fini_common(struct cx8802_dev * dev)433 static void cx8802_fini_common(struct cx8802_dev *dev)
434 {
435 dprintk( 2, "cx8802_fini_common\n" );
436 cx8802_stop_dma(dev);
437 pci_disable_device(dev->pci);
438
439 /* unregister stuff */
440 free_irq(dev->pci->irq, dev);
441 }
442
443 /* ----------------------------------------------------------- */
444
cx8802_suspend_common(struct pci_dev * pci_dev,pm_message_t state)445 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
446 {
447 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
448 struct cx88_core *core = dev->core;
449 unsigned long flags;
450
451 /* stop mpeg dma */
452 spin_lock_irqsave(&dev->slock, flags);
453 if (!list_empty(&dev->mpegq.active)) {
454 dprintk( 2, "suspend\n" );
455 printk("%s: suspend mpeg\n", core->name);
456 cx8802_stop_dma(dev);
457 }
458 spin_unlock_irqrestore(&dev->slock, flags);
459
460 /* FIXME -- shutdown device */
461 cx88_shutdown(dev->core);
462
463 pci_save_state(pci_dev);
464 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
465 pci_disable_device(pci_dev);
466 dev->state.disabled = 1;
467 }
468 return 0;
469 }
470
cx8802_resume_common(struct pci_dev * pci_dev)471 static int cx8802_resume_common(struct pci_dev *pci_dev)
472 {
473 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
474 struct cx88_core *core = dev->core;
475 unsigned long flags;
476 int err;
477
478 if (dev->state.disabled) {
479 err=pci_enable_device(pci_dev);
480 if (err) {
481 printk(KERN_ERR "%s: can't enable device\n",
482 dev->core->name);
483 return err;
484 }
485 dev->state.disabled = 0;
486 }
487 err=pci_set_power_state(pci_dev, PCI_D0);
488 if (err) {
489 printk(KERN_ERR "%s: can't enable device\n",
490 dev->core->name);
491 pci_disable_device(pci_dev);
492 dev->state.disabled = 1;
493
494 return err;
495 }
496 pci_restore_state(pci_dev);
497
498 /* FIXME: re-initialize hardware */
499 cx88_reset(dev->core);
500
501 /* restart video+vbi capture */
502 spin_lock_irqsave(&dev->slock, flags);
503 if (!list_empty(&dev->mpegq.active)) {
504 printk("%s: resume mpeg\n", core->name);
505 cx8802_restart_queue(dev,&dev->mpegq);
506 }
507 spin_unlock_irqrestore(&dev->slock, flags);
508
509 return 0;
510 }
511
cx8802_get_driver(struct cx8802_dev * dev,enum cx88_board_type btype)512 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
513 {
514 struct cx8802_driver *d;
515
516 list_for_each_entry(d, &dev->drvlist, drvlist)
517 if (d->type_id == btype)
518 return d;
519
520 return NULL;
521 }
522
523 /* Driver asked for hardware access. */
cx8802_request_acquire(struct cx8802_driver * drv)524 static int cx8802_request_acquire(struct cx8802_driver *drv)
525 {
526 struct cx88_core *core = drv->core;
527 unsigned int i;
528
529 /* Fail a request for hardware if the device is busy. */
530 if (core->active_type_id != CX88_BOARD_NONE &&
531 core->active_type_id != drv->type_id)
532 return -EBUSY;
533
534 if (drv->type_id == CX88_MPEG_DVB) {
535 /* When switching to DVB, always set the input to the tuner */
536 core->last_analog_input = core->input;
537 core->input = 0;
538 for (i = 0;
539 i < (sizeof(core->board.input) / sizeof(struct cx88_input));
540 i++) {
541 if (core->board.input[i].type == CX88_VMUX_DVB) {
542 core->input = i;
543 break;
544 }
545 }
546 }
547
548 if (drv->advise_acquire)
549 {
550 core->active_ref++;
551 if (core->active_type_id == CX88_BOARD_NONE) {
552 core->active_type_id = drv->type_id;
553 drv->advise_acquire(drv);
554 }
555
556 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
557 }
558
559 return 0;
560 }
561
562 /* Driver asked to release hardware. */
cx8802_request_release(struct cx8802_driver * drv)563 static int cx8802_request_release(struct cx8802_driver *drv)
564 {
565 struct cx88_core *core = drv->core;
566
567 if (drv->advise_release && --core->active_ref == 0)
568 {
569 if (drv->type_id == CX88_MPEG_DVB) {
570 /* If the DVB driver is releasing, reset the input
571 state to the last configured analog input */
572 core->input = core->last_analog_input;
573 }
574
575 drv->advise_release(drv);
576 core->active_type_id = CX88_BOARD_NONE;
577 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
578 }
579
580 return 0;
581 }
582
cx8802_check_driver(struct cx8802_driver * drv)583 static int cx8802_check_driver(struct cx8802_driver *drv)
584 {
585 if (drv == NULL)
586 return -ENODEV;
587
588 if ((drv->type_id != CX88_MPEG_DVB) &&
589 (drv->type_id != CX88_MPEG_BLACKBIRD))
590 return -EINVAL;
591
592 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
593 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
594 return -EINVAL;
595
596 if ((drv->probe == NULL) ||
597 (drv->remove == NULL) ||
598 (drv->advise_acquire == NULL) ||
599 (drv->advise_release == NULL))
600 return -EINVAL;
601
602 return 0;
603 }
604
cx8802_register_driver(struct cx8802_driver * drv)605 int cx8802_register_driver(struct cx8802_driver *drv)
606 {
607 struct cx8802_dev *dev;
608 struct cx8802_driver *driver;
609 int err, i = 0;
610
611 printk(KERN_INFO
612 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
613 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
614 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
615
616 if ((err = cx8802_check_driver(drv)) != 0) {
617 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
618 return err;
619 }
620
621 mutex_lock(&cx8802_mutex);
622
623 list_for_each_entry(dev, &cx8802_devlist, devlist) {
624 printk(KERN_INFO
625 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
626 dev->core->name, dev->pci->subsystem_vendor,
627 dev->pci->subsystem_device, dev->core->board.name,
628 dev->core->boardnr);
629
630 /* Bring up a new struct for each driver instance */
631 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
632 if (driver == NULL) {
633 err = -ENOMEM;
634 goto out;
635 }
636
637 /* Snapshot of the driver registration data */
638 drv->core = dev->core;
639 drv->suspend = cx8802_suspend_common;
640 drv->resume = cx8802_resume_common;
641 drv->request_acquire = cx8802_request_acquire;
642 drv->request_release = cx8802_request_release;
643 memcpy(driver, drv, sizeof(*driver));
644
645 mutex_lock(&drv->core->lock);
646 err = drv->probe(driver);
647 if (err == 0) {
648 i++;
649 list_add_tail(&driver->drvlist, &dev->drvlist);
650 } else {
651 printk(KERN_ERR
652 "%s/2: cx8802 probe failed, err = %d\n",
653 dev->core->name, err);
654 }
655 mutex_unlock(&drv->core->lock);
656 }
657
658 err = i ? 0 : -ENODEV;
659 out:
660 mutex_unlock(&cx8802_mutex);
661 return err;
662 }
663
cx8802_unregister_driver(struct cx8802_driver * drv)664 int cx8802_unregister_driver(struct cx8802_driver *drv)
665 {
666 struct cx8802_dev *dev;
667 struct cx8802_driver *d, *dtmp;
668 int err = 0;
669
670 printk(KERN_INFO
671 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
672 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
673 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
674
675 mutex_lock(&cx8802_mutex);
676
677 list_for_each_entry(dev, &cx8802_devlist, devlist) {
678 printk(KERN_INFO
679 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
680 dev->core->name, dev->pci->subsystem_vendor,
681 dev->pci->subsystem_device, dev->core->board.name,
682 dev->core->boardnr);
683
684 mutex_lock(&dev->core->lock);
685
686 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
687 /* only unregister the correct driver type */
688 if (d->type_id != drv->type_id)
689 continue;
690
691 err = d->remove(d);
692 if (err == 0) {
693 list_del(&d->drvlist);
694 kfree(d);
695 } else
696 printk(KERN_ERR "%s/2: cx8802 driver remove "
697 "failed (%d)\n", dev->core->name, err);
698 }
699
700 mutex_unlock(&dev->core->lock);
701 }
702
703 mutex_unlock(&cx8802_mutex);
704
705 return err;
706 }
707
708 /* ----------------------------------------------------------- */
cx8802_probe(struct pci_dev * pci_dev,const struct pci_device_id * pci_id)709 static int cx8802_probe(struct pci_dev *pci_dev,
710 const struct pci_device_id *pci_id)
711 {
712 struct cx8802_dev *dev;
713 struct cx88_core *core;
714 int err;
715
716 /* general setup */
717 core = cx88_core_get(pci_dev);
718 if (NULL == core)
719 return -EINVAL;
720
721 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
722
723 err = -ENODEV;
724 if (!core->board.mpeg)
725 goto fail_core;
726
727 err = -ENOMEM;
728 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
729 if (NULL == dev)
730 goto fail_core;
731 dev->pci = pci_dev;
732 dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
733 if (IS_ERR(dev->alloc_ctx)) {
734 err = PTR_ERR(dev->alloc_ctx);
735 goto fail_dev;
736 }
737 dev->core = core;
738
739 /* Maintain a reference so cx88-video can query the 8802 device. */
740 core->dvbdev = dev;
741
742 err = cx8802_init_common(dev);
743 if (err != 0)
744 goto fail_free;
745
746 INIT_LIST_HEAD(&dev->drvlist);
747 mutex_lock(&cx8802_mutex);
748 list_add_tail(&dev->devlist,&cx8802_devlist);
749 mutex_unlock(&cx8802_mutex);
750
751 /* now autoload cx88-dvb or cx88-blackbird */
752 request_modules(dev);
753 return 0;
754
755 fail_free:
756 vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
757 fail_dev:
758 kfree(dev);
759 fail_core:
760 core->dvbdev = NULL;
761 cx88_core_put(core,pci_dev);
762 return err;
763 }
764
cx8802_remove(struct pci_dev * pci_dev)765 static void cx8802_remove(struct pci_dev *pci_dev)
766 {
767 struct cx8802_dev *dev;
768
769 dev = pci_get_drvdata(pci_dev);
770
771 dprintk( 1, "%s\n", __func__);
772
773 flush_request_modules(dev);
774
775 mutex_lock(&dev->core->lock);
776
777 if (!list_empty(&dev->drvlist)) {
778 struct cx8802_driver *drv, *tmp;
779 int err;
780
781 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
782 "while cx8802 sub-drivers still loaded?!\n",
783 dev->core->name);
784
785 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
786 err = drv->remove(drv);
787 if (err == 0) {
788 list_del(&drv->drvlist);
789 } else
790 printk(KERN_ERR "%s/2: cx8802 driver remove "
791 "failed (%d)\n", dev->core->name, err);
792 kfree(drv);
793 }
794 }
795
796 mutex_unlock(&dev->core->lock);
797
798 /* Destroy any 8802 reference. */
799 dev->core->dvbdev = NULL;
800
801 /* common */
802 cx8802_fini_common(dev);
803 cx88_core_put(dev->core,dev->pci);
804 vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
805 kfree(dev);
806 }
807
808 static const struct pci_device_id cx8802_pci_tbl[] = {
809 {
810 .vendor = 0x14f1,
811 .device = 0x8802,
812 .subvendor = PCI_ANY_ID,
813 .subdevice = PCI_ANY_ID,
814 },{
815 /* --- end of list --- */
816 }
817 };
818 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
819
820 static struct pci_driver cx8802_pci_driver = {
821 .name = "cx88-mpeg driver manager",
822 .id_table = cx8802_pci_tbl,
823 .probe = cx8802_probe,
824 .remove = cx8802_remove,
825 };
826
827 module_pci_driver(cx8802_pci_driver);
828
829 EXPORT_SYMBOL(cx8802_buf_prepare);
830 EXPORT_SYMBOL(cx8802_buf_queue);
831 EXPORT_SYMBOL(cx8802_cancel_buffers);
832 EXPORT_SYMBOL(cx8802_start_dma);
833
834 EXPORT_SYMBOL(cx8802_register_driver);
835 EXPORT_SYMBOL(cx8802_unregister_driver);
836 EXPORT_SYMBOL(cx8802_get_driver);
837