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1da177e4 LT |
1 | /* |
2 | saa7146.o - driver for generic saa7146-based hardware | |
3 | ||
4 | Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de> | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | #include <media/saa7146.h> | |
22 | ||
23 | LIST_HEAD(saa7146_devices); | |
3593cab5 | 24 | DEFINE_MUTEX(saa7146_devices_lock); |
1da177e4 | 25 | |
c2c62d81 | 26 | static int saa7146_num; |
1da177e4 | 27 | |
c2c62d81 | 28 | unsigned int saa7146_debug; |
1da177e4 | 29 | |
804b4458 | 30 | module_param(saa7146_debug, uint, 0644); |
1da177e4 LT |
31 | MODULE_PARM_DESC(saa7146_debug, "debug level (default: 0)"); |
32 | ||
33 | #if 0 | |
34 | static void dump_registers(struct saa7146_dev* dev) | |
35 | { | |
36 | int i = 0; | |
37 | ||
38 | INFO((" @ %li jiffies:\n",jiffies)); | |
39 | for(i = 0; i <= 0x148; i+=4) { | |
40 | printk("0x%03x: 0x%08x\n",i,saa7146_read(dev,i)); | |
41 | } | |
42 | } | |
43 | #endif | |
44 | ||
45 | /**************************************************************************** | |
46 | * gpio and debi helper functions | |
47 | ****************************************************************************/ | |
48 | ||
49 | void saa7146_setgpio(struct saa7146_dev *dev, int port, u32 data) | |
50 | { | |
51 | u32 value = 0; | |
52 | ||
53 | BUG_ON(port > 3); | |
54 | ||
55 | value = saa7146_read(dev, GPIO_CTRL); | |
56 | value &= ~(0xff << (8*port)); | |
57 | value |= (data << (8*port)); | |
58 | saa7146_write(dev, GPIO_CTRL, value); | |
59 | } | |
60 | ||
61 | /* This DEBI code is based on the saa7146 Stradis driver by Nathan Laredo */ | |
26ac14e2 OE |
62 | static inline int saa7146_wait_for_debi_done_sleep(struct saa7146_dev *dev, |
63 | unsigned long us1, unsigned long us2) | |
1da177e4 | 64 | { |
26ac14e2 | 65 | unsigned long timeout; |
25de1926 | 66 | int err; |
1da177e4 LT |
67 | |
68 | /* wait for registers to be programmed */ | |
26ac14e2 | 69 | timeout = jiffies + usecs_to_jiffies(us1); |
1da177e4 | 70 | while (1) { |
26ac14e2 | 71 | err = time_after(jiffies, timeout); |
25de1926 OE |
72 | if (saa7146_read(dev, MC2) & 2) |
73 | break; | |
74 | if (err) { | |
26ac14e2 OE |
75 | printk(KERN_ERR "%s: %s timed out while waiting for " |
76 | "registers getting programmed\n", | |
77 | dev->name, __FUNCTION__); | |
1da177e4 LT |
78 | return -ETIMEDOUT; |
79 | } | |
26ac14e2 | 80 | msleep(1); |
1da177e4 LT |
81 | } |
82 | ||
83 | /* wait for transfer to complete */ | |
26ac14e2 | 84 | timeout = jiffies + usecs_to_jiffies(us2); |
1da177e4 | 85 | while (1) { |
26ac14e2 | 86 | err = time_after(jiffies, timeout); |
1da177e4 LT |
87 | if (!(saa7146_read(dev, PSR) & SPCI_DEBI_S)) |
88 | break; | |
89 | saa7146_read(dev, MC2); | |
25de1926 | 90 | if (err) { |
26ac14e2 OE |
91 | DEB_S(("%s: %s timed out while waiting for transfer " |
92 | "completion\n", dev->name, __FUNCTION__)); | |
1da177e4 LT |
93 | return -ETIMEDOUT; |
94 | } | |
26ac14e2 | 95 | msleep(1); |
1da177e4 LT |
96 | } |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
26ac14e2 OE |
101 | static inline int saa7146_wait_for_debi_done_busyloop(struct saa7146_dev *dev, |
102 | unsigned long us1, unsigned long us2) | |
103 | { | |
104 | unsigned long loops; | |
105 | ||
106 | /* wait for registers to be programmed */ | |
107 | loops = us1; | |
108 | while (1) { | |
109 | if (saa7146_read(dev, MC2) & 2) | |
110 | break; | |
111 | if (!loops--) { | |
112 | printk(KERN_ERR "%s: %s timed out while waiting for " | |
113 | "registers getting programmed\n", | |
114 | dev->name, __FUNCTION__); | |
115 | return -ETIMEDOUT; | |
116 | } | |
117 | udelay(1); | |
118 | } | |
119 | ||
120 | /* wait for transfer to complete */ | |
121 | loops = us2 / 5; | |
122 | while (1) { | |
123 | if (!(saa7146_read(dev, PSR) & SPCI_DEBI_S)) | |
124 | break; | |
125 | saa7146_read(dev, MC2); | |
126 | if (!loops--) { | |
127 | DEB_S(("%s: %s timed out while waiting for transfer " | |
128 | "completion\n", dev->name, __FUNCTION__)); | |
129 | return -ETIMEDOUT; | |
130 | } | |
131 | udelay(5); | |
132 | } | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
137 | int saa7146_wait_for_debi_done(struct saa7146_dev *dev, int nobusyloop) | |
138 | { | |
139 | if (nobusyloop) | |
140 | return saa7146_wait_for_debi_done_sleep(dev, 50000, 250000); | |
141 | else | |
142 | return saa7146_wait_for_debi_done_busyloop(dev, 50000, 250000); | |
143 | } | |
144 | ||
1da177e4 LT |
145 | /**************************************************************************** |
146 | * general helper functions | |
147 | ****************************************************************************/ | |
148 | ||
c1accaa2 | 149 | /* this is videobuf_vmalloc_to_sg() from videobuf-dma-sg.c |
1da177e4 LT |
150 | make sure virt has been allocated with vmalloc_32(), otherwise the BUG() |
151 | may be triggered on highmem machines */ | |
152 | static struct scatterlist* vmalloc_to_sg(unsigned char *virt, int nr_pages) | |
153 | { | |
154 | struct scatterlist *sglist; | |
155 | struct page *pg; | |
156 | int i; | |
157 | ||
7408187d | 158 | sglist = kcalloc(nr_pages, sizeof(struct scatterlist), GFP_KERNEL); |
1da177e4 LT |
159 | if (NULL == sglist) |
160 | return NULL; | |
45711f1a | 161 | sg_init_table(sglist, nr_pages); |
1da177e4 LT |
162 | for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) { |
163 | pg = vmalloc_to_page(virt); | |
164 | if (NULL == pg) | |
165 | goto err; | |
ae24601b | 166 | BUG_ON(PageHighMem(pg)); |
642f1490 | 167 | sg_set_page(&sglist[i], pg, PAGE_SIZE, 0); |
1da177e4 LT |
168 | } |
169 | return sglist; | |
170 | ||
171 | err: | |
172 | kfree(sglist); | |
173 | return NULL; | |
174 | } | |
175 | ||
176 | /********************************************************************************/ | |
177 | /* common page table functions */ | |
178 | ||
804b4458 | 179 | void *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa7146_pgtable *pt) |
1da177e4 LT |
180 | { |
181 | int pages = (length+PAGE_SIZE-1)/PAGE_SIZE; | |
804b4458 | 182 | void *mem = vmalloc_32(length); |
1da177e4 LT |
183 | int slen = 0; |
184 | ||
87c3019d JB |
185 | if (NULL == mem) |
186 | goto err_null; | |
1da177e4 | 187 | |
87c3019d JB |
188 | if (!(pt->slist = vmalloc_to_sg(mem, pages))) |
189 | goto err_free_mem; | |
1da177e4 | 190 | |
87c3019d JB |
191 | if (saa7146_pgtable_alloc(pci, pt)) |
192 | goto err_free_slist; | |
1da177e4 | 193 | |
87c3019d JB |
194 | pt->nents = pages; |
195 | slen = pci_map_sg(pci,pt->slist,pt->nents,PCI_DMA_FROMDEVICE); | |
196 | if (0 == slen) | |
197 | goto err_free_pgtable; | |
198 | ||
199 | if (0 != saa7146_pgtable_build_single(pci, pt, pt->slist, slen)) | |
200 | goto err_unmap_sg; | |
1da177e4 LT |
201 | |
202 | return mem; | |
87c3019d JB |
203 | |
204 | err_unmap_sg: | |
205 | pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE); | |
206 | err_free_pgtable: | |
207 | saa7146_pgtable_free(pci, pt); | |
208 | err_free_slist: | |
209 | kfree(pt->slist); | |
210 | pt->slist = NULL; | |
211 | err_free_mem: | |
212 | vfree(mem); | |
213 | err_null: | |
214 | return NULL; | |
215 | } | |
216 | ||
804b4458 | 217 | void saa7146_vfree_destroy_pgtable(struct pci_dev *pci, void *mem, struct saa7146_pgtable *pt) |
87c3019d JB |
218 | { |
219 | pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE); | |
220 | saa7146_pgtable_free(pci, pt); | |
221 | kfree(pt->slist); | |
222 | pt->slist = NULL; | |
223 | vfree(mem); | |
1da177e4 LT |
224 | } |
225 | ||
226 | void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt) | |
227 | { | |
228 | if (NULL == pt->cpu) | |
229 | return; | |
230 | pci_free_consistent(pci, pt->size, pt->cpu, pt->dma); | |
231 | pt->cpu = NULL; | |
1da177e4 LT |
232 | } |
233 | ||
234 | int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt) | |
235 | { | |
afd1a0c9 MCC |
236 | u32 *cpu; |
237 | dma_addr_t dma_addr; | |
1da177e4 LT |
238 | |
239 | cpu = pci_alloc_consistent(pci, PAGE_SIZE, &dma_addr); | |
240 | if (NULL == cpu) { | |
241 | return -ENOMEM; | |
242 | } | |
243 | pt->size = PAGE_SIZE; | |
244 | pt->cpu = cpu; | |
245 | pt->dma = dma_addr; | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, | |
251 | struct scatterlist *list, int sglen ) | |
252 | { | |
253 | u32 *ptr, fill; | |
254 | int nr_pages = 0; | |
255 | int i,p; | |
256 | ||
257 | BUG_ON(0 == sglen); | |
258 | BUG_ON(list->offset > PAGE_SIZE); | |
259 | ||
260 | /* if we have a user buffer, the first page may not be | |
261 | aligned to a page boundary. */ | |
262 | pt->offset = list->offset; | |
263 | ||
264 | ptr = pt->cpu; | |
265 | for (i = 0; i < sglen; i++, list++) { | |
266 | /* | |
267 | printk("i:%d, adr:0x%08x, len:%d, offset:%d\n", i,sg_dma_address(list), sg_dma_len(list), list->offset); | |
268 | */ | |
269 | for (p = 0; p * 4096 < list->length; p++, ptr++) { | |
270 | *ptr = cpu_to_le32(sg_dma_address(list) + p * 4096); | |
271 | nr_pages++; | |
272 | } | |
273 | } | |
274 | ||
275 | ||
276 | /* safety; fill the page table up with the last valid page */ | |
277 | fill = *(ptr-1); | |
278 | for(i=nr_pages;i<1024;i++) { | |
279 | *ptr++ = fill; | |
280 | } | |
281 | ||
282 | /* | |
283 | ptr = pt->cpu; | |
284 | printk("offset: %d\n",pt->offset); | |
285 | for(i=0;i<5;i++) { | |
286 | printk("ptr1 %d: 0x%08x\n",i,ptr[i]); | |
287 | } | |
288 | */ | |
289 | return 0; | |
290 | } | |
291 | ||
292 | /********************************************************************************/ | |
293 | /* interrupt handler */ | |
7d12e780 | 294 | static irqreturn_t interrupt_hw(int irq, void *dev_id) |
1da177e4 LT |
295 | { |
296 | struct saa7146_dev *dev = dev_id; | |
276e49a0 OE |
297 | u32 isr; |
298 | u32 ack_isr; | |
1da177e4 LT |
299 | |
300 | /* read out the interrupt status register */ | |
276e49a0 | 301 | ack_isr = isr = saa7146_read(dev, ISR); |
1da177e4 LT |
302 | |
303 | /* is this our interrupt? */ | |
304 | if ( 0 == isr ) { | |
305 | /* nope, some other device */ | |
306 | return IRQ_NONE; | |
307 | } | |
308 | ||
1da177e4 LT |
309 | if( 0 != (dev->ext)) { |
310 | if( 0 != (dev->ext->irq_mask & isr )) { | |
311 | if( 0 != dev->ext->irq_func ) { | |
312 | dev->ext->irq_func(dev, &isr); | |
313 | } | |
314 | isr &= ~dev->ext->irq_mask; | |
315 | } | |
316 | } | |
317 | if (0 != (isr & (MASK_27))) { | |
318 | DEB_INT(("irq: RPS0 (0x%08x).\n",isr)); | |
319 | if( 0 != dev->vv_data && 0 != dev->vv_callback) { | |
320 | dev->vv_callback(dev,isr); | |
321 | } | |
322 | isr &= ~MASK_27; | |
323 | } | |
324 | if (0 != (isr & (MASK_28))) { | |
325 | if( 0 != dev->vv_data && 0 != dev->vv_callback) { | |
326 | dev->vv_callback(dev,isr); | |
327 | } | |
328 | isr &= ~MASK_28; | |
329 | } | |
330 | if (0 != (isr & (MASK_16|MASK_17))) { | |
276e49a0 OE |
331 | SAA7146_IER_DISABLE(dev, MASK_16|MASK_17); |
332 | /* only wake up if we expect something */ | |
333 | if (0 != dev->i2c_op) { | |
334 | dev->i2c_op = 0; | |
335 | wake_up(&dev->i2c_wq); | |
1da177e4 | 336 | } else { |
276e49a0 OE |
337 | u32 psr = saa7146_read(dev, PSR); |
338 | u32 ssr = saa7146_read(dev, SSR); | |
339 | printk(KERN_WARNING "%s: unexpected i2c irq: isr %08x psr %08x ssr %08x\n", | |
340 | dev->name, isr, psr, ssr); | |
1da177e4 LT |
341 | } |
342 | isr &= ~(MASK_16|MASK_17); | |
343 | } | |
344 | if( 0 != isr ) { | |
345 | ERR(("warning: interrupt enabled, but not handled properly.(0x%08x)\n",isr)); | |
346 | ERR(("disabling interrupt source(s)!\n")); | |
347 | SAA7146_IER_DISABLE(dev,isr); | |
348 | } | |
276e49a0 | 349 | saa7146_write(dev, ISR, ack_isr); |
1da177e4 LT |
350 | return IRQ_HANDLED; |
351 | } | |
352 | ||
353 | /*********************************************************************************/ | |
354 | /* configuration-functions */ | |
355 | ||
356 | static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent) | |
357 | { | |
358 | struct saa7146_pci_extension_data *pci_ext = (struct saa7146_pci_extension_data *)ent->driver_data; | |
359 | struct saa7146_extension *ext = pci_ext->ext; | |
360 | struct saa7146_dev *dev; | |
361 | int err = -ENOMEM; | |
362 | ||
7408187d PI |
363 | /* clear out mem for sure */ |
364 | dev = kzalloc(sizeof(struct saa7146_dev), GFP_KERNEL); | |
1da177e4 LT |
365 | if (!dev) { |
366 | ERR(("out of memory.\n")); | |
367 | goto out; | |
368 | } | |
369 | ||
1da177e4 LT |
370 | DEB_EE(("pci:%p\n",pci)); |
371 | ||
372 | err = pci_enable_device(pci); | |
373 | if (err < 0) { | |
374 | ERR(("pci_enable_device() failed.\n")); | |
375 | goto err_free; | |
376 | } | |
377 | ||
378 | /* enable bus-mastering */ | |
379 | pci_set_master(pci); | |
380 | ||
381 | dev->pci = pci; | |
382 | ||
383 | /* get chip-revision; this is needed to enable bug-fixes */ | |
384 | err = pci_read_config_dword(pci, PCI_CLASS_REVISION, &dev->revision); | |
385 | if (err < 0) { | |
386 | ERR(("pci_read_config_dword() failed.\n")); | |
387 | goto err_disable; | |
388 | } | |
389 | dev->revision &= 0xf; | |
390 | ||
391 | /* remap the memory from virtual to physical adress */ | |
392 | ||
393 | err = pci_request_region(pci, 0, "saa7146"); | |
394 | if (err < 0) | |
395 | goto err_disable; | |
396 | ||
397 | dev->mem = ioremap(pci_resource_start(pci, 0), | |
398 | pci_resource_len(pci, 0)); | |
399 | if (!dev->mem) { | |
400 | ERR(("ioremap() failed.\n")); | |
401 | err = -ENODEV; | |
402 | goto err_release; | |
403 | } | |
404 | ||
405 | /* we don't do a master reset here anymore, it screws up | |
406 | some boards that don't have an i2c-eeprom for configuration | |
407 | values */ | |
408 | /* | |
409 | saa7146_write(dev, MC1, MASK_31); | |
410 | */ | |
411 | ||
412 | /* disable all irqs */ | |
413 | saa7146_write(dev, IER, 0); | |
414 | ||
415 | /* shut down all dma transfers and rps tasks */ | |
416 | saa7146_write(dev, MC1, 0x30ff0000); | |
417 | ||
418 | /* clear out any rps-signals pending */ | |
419 | saa7146_write(dev, MC2, 0xf8000000); | |
420 | ||
421 | /* request an interrupt for the saa7146 */ | |
8076fe32 | 422 | err = request_irq(pci->irq, interrupt_hw, IRQF_SHARED | IRQF_DISABLED, |
1da177e4 LT |
423 | dev->name, dev); |
424 | if (err < 0) { | |
425 | ERR(("request_irq() failed.\n")); | |
426 | goto err_unmap; | |
427 | } | |
428 | ||
429 | err = -ENOMEM; | |
430 | ||
431 | /* get memory for various stuff */ | |
432 | dev->d_rps0.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, | |
433 | &dev->d_rps0.dma_handle); | |
434 | if (!dev->d_rps0.cpu_addr) | |
435 | goto err_free_irq; | |
436 | memset(dev->d_rps0.cpu_addr, 0x0, SAA7146_RPS_MEM); | |
437 | ||
438 | dev->d_rps1.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, | |
439 | &dev->d_rps1.dma_handle); | |
440 | if (!dev->d_rps1.cpu_addr) | |
441 | goto err_free_rps0; | |
442 | memset(dev->d_rps1.cpu_addr, 0x0, SAA7146_RPS_MEM); | |
443 | ||
444 | dev->d_i2c.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, | |
445 | &dev->d_i2c.dma_handle); | |
446 | if (!dev->d_i2c.cpu_addr) | |
447 | goto err_free_rps1; | |
448 | memset(dev->d_i2c.cpu_addr, 0x0, SAA7146_RPS_MEM); | |
449 | ||
450 | /* the rest + print status message */ | |
451 | ||
452 | /* create a nice device name */ | |
453 | sprintf(dev->name, "saa7146 (%d)", saa7146_num); | |
454 | ||
455 | INFO(("found saa7146 @ mem %p (revision %d, irq %d) (0x%04x,0x%04x).\n", dev->mem, dev->revision, pci->irq, pci->subsystem_vendor, pci->subsystem_device)); | |
456 | dev->ext = ext; | |
457 | ||
458 | pci_set_drvdata(pci, dev); | |
459 | ||
3593cab5 | 460 | mutex_init(&dev->lock); |
1da177e4 LT |
461 | spin_lock_init(&dev->int_slock); |
462 | spin_lock_init(&dev->slock); | |
463 | ||
3593cab5 | 464 | mutex_init(&dev->i2c_lock); |
1da177e4 LT |
465 | |
466 | dev->module = THIS_MODULE; | |
467 | init_waitqueue_head(&dev->i2c_wq); | |
468 | ||
469 | /* set some sane pci arbitrition values */ | |
470 | saa7146_write(dev, PCI_BT_V1, 0x1c00101f); | |
471 | ||
472 | /* TODO: use the status code of the callback */ | |
473 | ||
474 | err = -ENODEV; | |
475 | ||
476 | if (ext->probe && ext->probe(dev)) { | |
477 | DEB_D(("ext->probe() failed for %p. skipping device.\n",dev)); | |
478 | goto err_free_i2c; | |
479 | } | |
480 | ||
481 | if (ext->attach(dev, pci_ext)) { | |
482 | DEB_D(("ext->attach() failed for %p. skipping device.\n",dev)); | |
483 | goto err_unprobe; | |
484 | } | |
485 | ||
486 | INIT_LIST_HEAD(&dev->item); | |
487 | list_add_tail(&dev->item,&saa7146_devices); | |
488 | saa7146_num++; | |
489 | ||
490 | err = 0; | |
491 | out: | |
492 | return err; | |
493 | ||
494 | err_unprobe: | |
495 | pci_set_drvdata(pci, NULL); | |
496 | err_free_i2c: | |
497 | pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_i2c.cpu_addr, | |
498 | dev->d_i2c.dma_handle); | |
499 | err_free_rps1: | |
500 | pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps1.cpu_addr, | |
501 | dev->d_rps1.dma_handle); | |
502 | err_free_rps0: | |
503 | pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps0.cpu_addr, | |
504 | dev->d_rps0.dma_handle); | |
505 | err_free_irq: | |
506 | free_irq(pci->irq, (void *)dev); | |
507 | err_unmap: | |
508 | iounmap(dev->mem); | |
509 | err_release: | |
510 | pci_release_region(pci, 0); | |
511 | err_disable: | |
512 | pci_disable_device(pci); | |
513 | err_free: | |
514 | kfree(dev); | |
515 | goto out; | |
516 | } | |
517 | ||
518 | static void saa7146_remove_one(struct pci_dev *pdev) | |
519 | { | |
520 | struct saa7146_dev* dev = pci_get_drvdata(pdev); | |
521 | struct { | |
522 | void *addr; | |
523 | dma_addr_t dma; | |
524 | } dev_map[] = { | |
525 | { dev->d_i2c.cpu_addr, dev->d_i2c.dma_handle }, | |
526 | { dev->d_rps1.cpu_addr, dev->d_rps1.dma_handle }, | |
527 | { dev->d_rps0.cpu_addr, dev->d_rps0.dma_handle }, | |
528 | { NULL, 0 } | |
529 | }, *p; | |
530 | ||
531 | DEB_EE(("dev:%p\n",dev)); | |
532 | ||
533 | dev->ext->detach(dev); | |
534 | ||
535 | /* shut down all video dma transfers */ | |
536 | saa7146_write(dev, MC1, 0x00ff0000); | |
537 | ||
538 | /* disable all irqs, release irq-routine */ | |
539 | saa7146_write(dev, IER, 0); | |
540 | ||
541 | free_irq(pdev->irq, dev); | |
542 | ||
543 | for (p = dev_map; p->addr; p++) | |
544 | pci_free_consistent(pdev, SAA7146_RPS_MEM, p->addr, p->dma); | |
545 | ||
546 | iounmap(dev->mem); | |
547 | pci_release_region(pdev, 0); | |
548 | list_del(&dev->item); | |
549 | pci_disable_device(pdev); | |
550 | kfree(dev); | |
551 | ||
552 | saa7146_num--; | |
553 | } | |
554 | ||
555 | /*********************************************************************************/ | |
556 | /* extension handling functions */ | |
557 | ||
558 | int saa7146_register_extension(struct saa7146_extension* ext) | |
559 | { | |
560 | DEB_EE(("ext:%p\n",ext)); | |
561 | ||
562 | ext->driver.name = ext->name; | |
563 | ext->driver.id_table = ext->pci_tbl; | |
564 | ext->driver.probe = saa7146_init_one; | |
565 | ext->driver.remove = saa7146_remove_one; | |
566 | ||
567 | printk("saa7146: register extension '%s'.\n",ext->name); | |
178c6efc | 568 | return pci_register_driver(&ext->driver); |
1da177e4 LT |
569 | } |
570 | ||
571 | int saa7146_unregister_extension(struct saa7146_extension* ext) | |
572 | { | |
573 | DEB_EE(("ext:%p\n",ext)); | |
574 | printk("saa7146: unregister extension '%s'.\n",ext->name); | |
575 | pci_unregister_driver(&ext->driver); | |
576 | return 0; | |
577 | } | |
578 | ||
579 | EXPORT_SYMBOL_GPL(saa7146_register_extension); | |
580 | EXPORT_SYMBOL_GPL(saa7146_unregister_extension); | |
581 | ||
582 | /* misc functions used by extension modules */ | |
583 | EXPORT_SYMBOL_GPL(saa7146_pgtable_alloc); | |
584 | EXPORT_SYMBOL_GPL(saa7146_pgtable_free); | |
585 | EXPORT_SYMBOL_GPL(saa7146_pgtable_build_single); | |
586 | EXPORT_SYMBOL_GPL(saa7146_vmalloc_build_pgtable); | |
87c3019d | 587 | EXPORT_SYMBOL_GPL(saa7146_vfree_destroy_pgtable); |
1da177e4 LT |
588 | EXPORT_SYMBOL_GPL(saa7146_wait_for_debi_done); |
589 | ||
590 | EXPORT_SYMBOL_GPL(saa7146_setgpio); | |
591 | ||
1da177e4 LT |
592 | EXPORT_SYMBOL_GPL(saa7146_i2c_adapter_prepare); |
593 | ||
594 | EXPORT_SYMBOL_GPL(saa7146_debug); | |
595 | EXPORT_SYMBOL_GPL(saa7146_devices); | |
596 | EXPORT_SYMBOL_GPL(saa7146_devices_lock); | |
597 | ||
598 | MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); | |
599 | MODULE_DESCRIPTION("driver for generic saa7146-based hardware"); | |
600 | MODULE_LICENSE("GPL"); |