Commit | Line | Data |
---|---|---|
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 | ||
44d0b80e JP |
21 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
22 | ||
1da177e4 | 23 | #include <media/saa7146.h> |
7a707b89 | 24 | #include <linux/module.h> |
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 | ||
44d0b80e JP |
38 | pr_info(" @ %li jiffies:\n", jiffies); |
39 | for (i = 0; i <= 0x148; i += 4) | |
40 | pr_info("0x%03x: 0x%08x\n", i, saa7146_read(dev, i)); | |
1da177e4 LT |
41 | } |
42 | #endif | |
43 | ||
44 | /**************************************************************************** | |
45 | * gpio and debi helper functions | |
46 | ****************************************************************************/ | |
47 | ||
48 | void saa7146_setgpio(struct saa7146_dev *dev, int port, u32 data) | |
49 | { | |
50 | u32 value = 0; | |
51 | ||
52 | BUG_ON(port > 3); | |
53 | ||
54 | value = saa7146_read(dev, GPIO_CTRL); | |
55 | value &= ~(0xff << (8*port)); | |
56 | value |= (data << (8*port)); | |
57 | saa7146_write(dev, GPIO_CTRL, value); | |
58 | } | |
59 | ||
60 | /* This DEBI code is based on the saa7146 Stradis driver by Nathan Laredo */ | |
26ac14e2 OE |
61 | static inline int saa7146_wait_for_debi_done_sleep(struct saa7146_dev *dev, |
62 | unsigned long us1, unsigned long us2) | |
1da177e4 | 63 | { |
26ac14e2 | 64 | unsigned long timeout; |
25de1926 | 65 | int err; |
1da177e4 LT |
66 | |
67 | /* wait for registers to be programmed */ | |
26ac14e2 | 68 | timeout = jiffies + usecs_to_jiffies(us1); |
1da177e4 | 69 | while (1) { |
26ac14e2 | 70 | err = time_after(jiffies, timeout); |
25de1926 OE |
71 | if (saa7146_read(dev, MC2) & 2) |
72 | break; | |
73 | if (err) { | |
44d0b80e JP |
74 | pr_err("%s: %s timed out while waiting for registers getting programmed\n", |
75 | dev->name, __func__); | |
1da177e4 LT |
76 | return -ETIMEDOUT; |
77 | } | |
26ac14e2 | 78 | msleep(1); |
1da177e4 LT |
79 | } |
80 | ||
81 | /* wait for transfer to complete */ | |
26ac14e2 | 82 | timeout = jiffies + usecs_to_jiffies(us2); |
1da177e4 | 83 | while (1) { |
26ac14e2 | 84 | err = time_after(jiffies, timeout); |
1da177e4 LT |
85 | if (!(saa7146_read(dev, PSR) & SPCI_DEBI_S)) |
86 | break; | |
87 | saa7146_read(dev, MC2); | |
25de1926 | 88 | if (err) { |
44d0b80e JP |
89 | DEB_S("%s: %s timed out while waiting for transfer completion\n", |
90 | dev->name, __func__); | |
1da177e4 LT |
91 | return -ETIMEDOUT; |
92 | } | |
26ac14e2 | 93 | msleep(1); |
1da177e4 LT |
94 | } |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
26ac14e2 OE |
99 | static inline int saa7146_wait_for_debi_done_busyloop(struct saa7146_dev *dev, |
100 | unsigned long us1, unsigned long us2) | |
101 | { | |
102 | unsigned long loops; | |
103 | ||
104 | /* wait for registers to be programmed */ | |
105 | loops = us1; | |
106 | while (1) { | |
107 | if (saa7146_read(dev, MC2) & 2) | |
108 | break; | |
109 | if (!loops--) { | |
44d0b80e JP |
110 | pr_err("%s: %s timed out while waiting for registers getting programmed\n", |
111 | dev->name, __func__); | |
26ac14e2 OE |
112 | return -ETIMEDOUT; |
113 | } | |
114 | udelay(1); | |
115 | } | |
116 | ||
117 | /* wait for transfer to complete */ | |
118 | loops = us2 / 5; | |
119 | while (1) { | |
120 | if (!(saa7146_read(dev, PSR) & SPCI_DEBI_S)) | |
121 | break; | |
122 | saa7146_read(dev, MC2); | |
123 | if (!loops--) { | |
44d0b80e JP |
124 | DEB_S("%s: %s timed out while waiting for transfer completion\n", |
125 | dev->name, __func__); | |
26ac14e2 OE |
126 | return -ETIMEDOUT; |
127 | } | |
128 | udelay(5); | |
129 | } | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | int saa7146_wait_for_debi_done(struct saa7146_dev *dev, int nobusyloop) | |
135 | { | |
136 | if (nobusyloop) | |
137 | return saa7146_wait_for_debi_done_sleep(dev, 50000, 250000); | |
138 | else | |
139 | return saa7146_wait_for_debi_done_busyloop(dev, 50000, 250000); | |
140 | } | |
141 | ||
1da177e4 LT |
142 | /**************************************************************************** |
143 | * general helper functions | |
144 | ****************************************************************************/ | |
145 | ||
c1accaa2 | 146 | /* this is videobuf_vmalloc_to_sg() from videobuf-dma-sg.c |
1da177e4 LT |
147 | make sure virt has been allocated with vmalloc_32(), otherwise the BUG() |
148 | may be triggered on highmem machines */ | |
149 | static struct scatterlist* vmalloc_to_sg(unsigned char *virt, int nr_pages) | |
150 | { | |
151 | struct scatterlist *sglist; | |
152 | struct page *pg; | |
153 | int i; | |
154 | ||
7408187d | 155 | sglist = kcalloc(nr_pages, sizeof(struct scatterlist), GFP_KERNEL); |
1da177e4 LT |
156 | if (NULL == sglist) |
157 | return NULL; | |
45711f1a | 158 | sg_init_table(sglist, nr_pages); |
1da177e4 LT |
159 | for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) { |
160 | pg = vmalloc_to_page(virt); | |
161 | if (NULL == pg) | |
162 | goto err; | |
ae24601b | 163 | BUG_ON(PageHighMem(pg)); |
642f1490 | 164 | sg_set_page(&sglist[i], pg, PAGE_SIZE, 0); |
1da177e4 LT |
165 | } |
166 | return sglist; | |
167 | ||
168 | err: | |
169 | kfree(sglist); | |
170 | return NULL; | |
171 | } | |
172 | ||
173 | /********************************************************************************/ | |
174 | /* common page table functions */ | |
175 | ||
804b4458 | 176 | void *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa7146_pgtable *pt) |
1da177e4 LT |
177 | { |
178 | int pages = (length+PAGE_SIZE-1)/PAGE_SIZE; | |
804b4458 | 179 | void *mem = vmalloc_32(length); |
1da177e4 LT |
180 | int slen = 0; |
181 | ||
87c3019d JB |
182 | if (NULL == mem) |
183 | goto err_null; | |
1da177e4 | 184 | |
87c3019d JB |
185 | if (!(pt->slist = vmalloc_to_sg(mem, pages))) |
186 | goto err_free_mem; | |
1da177e4 | 187 | |
87c3019d JB |
188 | if (saa7146_pgtable_alloc(pci, pt)) |
189 | goto err_free_slist; | |
1da177e4 | 190 | |
87c3019d JB |
191 | pt->nents = pages; |
192 | slen = pci_map_sg(pci,pt->slist,pt->nents,PCI_DMA_FROMDEVICE); | |
193 | if (0 == slen) | |
194 | goto err_free_pgtable; | |
195 | ||
196 | if (0 != saa7146_pgtable_build_single(pci, pt, pt->slist, slen)) | |
197 | goto err_unmap_sg; | |
1da177e4 LT |
198 | |
199 | return mem; | |
87c3019d JB |
200 | |
201 | err_unmap_sg: | |
202 | pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE); | |
203 | err_free_pgtable: | |
204 | saa7146_pgtable_free(pci, pt); | |
205 | err_free_slist: | |
206 | kfree(pt->slist); | |
207 | pt->slist = NULL; | |
208 | err_free_mem: | |
209 | vfree(mem); | |
210 | err_null: | |
211 | return NULL; | |
212 | } | |
213 | ||
804b4458 | 214 | void saa7146_vfree_destroy_pgtable(struct pci_dev *pci, void *mem, struct saa7146_pgtable *pt) |
87c3019d JB |
215 | { |
216 | pci_unmap_sg(pci, pt->slist, pt->nents, PCI_DMA_FROMDEVICE); | |
217 | saa7146_pgtable_free(pci, pt); | |
218 | kfree(pt->slist); | |
219 | pt->slist = NULL; | |
220 | vfree(mem); | |
1da177e4 LT |
221 | } |
222 | ||
223 | void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt) | |
224 | { | |
225 | if (NULL == pt->cpu) | |
226 | return; | |
227 | pci_free_consistent(pci, pt->size, pt->cpu, pt->dma); | |
228 | pt->cpu = NULL; | |
1da177e4 LT |
229 | } |
230 | ||
231 | int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt) | |
232 | { | |
a36ef6b1 | 233 | __le32 *cpu; |
614b147b | 234 | dma_addr_t dma_addr = 0; |
1da177e4 LT |
235 | |
236 | cpu = pci_alloc_consistent(pci, PAGE_SIZE, &dma_addr); | |
237 | if (NULL == cpu) { | |
238 | return -ENOMEM; | |
239 | } | |
240 | pt->size = PAGE_SIZE; | |
241 | pt->cpu = cpu; | |
242 | pt->dma = dma_addr; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, | |
248 | struct scatterlist *list, int sglen ) | |
249 | { | |
a36ef6b1 | 250 | __le32 *ptr, fill; |
1da177e4 LT |
251 | int nr_pages = 0; |
252 | int i,p; | |
253 | ||
254 | BUG_ON(0 == sglen); | |
255 | BUG_ON(list->offset > PAGE_SIZE); | |
256 | ||
257 | /* if we have a user buffer, the first page may not be | |
258 | aligned to a page boundary. */ | |
259 | pt->offset = list->offset; | |
260 | ||
261 | ptr = pt->cpu; | |
262 | for (i = 0; i < sglen; i++, list++) { | |
263 | /* | |
44d0b80e JP |
264 | pr_debug("i:%d, adr:0x%08x, len:%d, offset:%d\n", |
265 | i, sg_dma_address(list), sg_dma_len(list), | |
266 | list->offset); | |
1da177e4 LT |
267 | */ |
268 | for (p = 0; p * 4096 < list->length; p++, ptr++) { | |
269 | *ptr = cpu_to_le32(sg_dma_address(list) + p * 4096); | |
270 | nr_pages++; | |
271 | } | |
272 | } | |
273 | ||
274 | ||
275 | /* safety; fill the page table up with the last valid page */ | |
276 | fill = *(ptr-1); | |
277 | for(i=nr_pages;i<1024;i++) { | |
278 | *ptr++ = fill; | |
279 | } | |
280 | ||
281 | /* | |
282 | ptr = pt->cpu; | |
44d0b80e | 283 | pr_debug("offset: %d\n", pt->offset); |
1da177e4 | 284 | for(i=0;i<5;i++) { |
44d0b80e | 285 | pr_debug("ptr1 %d: 0x%08x\n", i, ptr[i]); |
1da177e4 LT |
286 | } |
287 | */ | |
288 | return 0; | |
289 | } | |
290 | ||
291 | /********************************************************************************/ | |
292 | /* interrupt handler */ | |
7d12e780 | 293 | static irqreturn_t interrupt_hw(int irq, void *dev_id) |
1da177e4 LT |
294 | { |
295 | struct saa7146_dev *dev = dev_id; | |
276e49a0 OE |
296 | u32 isr; |
297 | u32 ack_isr; | |
1da177e4 LT |
298 | |
299 | /* read out the interrupt status register */ | |
276e49a0 | 300 | ack_isr = isr = saa7146_read(dev, ISR); |
1da177e4 LT |
301 | |
302 | /* is this our interrupt? */ | |
303 | if ( 0 == isr ) { | |
304 | /* nope, some other device */ | |
305 | return IRQ_NONE; | |
306 | } | |
307 | ||
5fa1247a AV |
308 | if (dev->ext) { |
309 | if (dev->ext->irq_mask & isr) { | |
310 | if (dev->ext->irq_func) | |
1da177e4 | 311 | dev->ext->irq_func(dev, &isr); |
1da177e4 LT |
312 | isr &= ~dev->ext->irq_mask; |
313 | } | |
314 | } | |
315 | if (0 != (isr & (MASK_27))) { | |
44d0b80e | 316 | DEB_INT("irq: RPS0 (0x%08x)\n", isr); |
5fa1247a | 317 | if (dev->vv_data && dev->vv_callback) |
1da177e4 | 318 | dev->vv_callback(dev,isr); |
1da177e4 LT |
319 | isr &= ~MASK_27; |
320 | } | |
321 | if (0 != (isr & (MASK_28))) { | |
5fa1247a | 322 | if (dev->vv_data && dev->vv_callback) |
1da177e4 | 323 | dev->vv_callback(dev,isr); |
1da177e4 LT |
324 | isr &= ~MASK_28; |
325 | } | |
326 | if (0 != (isr & (MASK_16|MASK_17))) { | |
276e49a0 OE |
327 | SAA7146_IER_DISABLE(dev, MASK_16|MASK_17); |
328 | /* only wake up if we expect something */ | |
329 | if (0 != dev->i2c_op) { | |
330 | dev->i2c_op = 0; | |
331 | wake_up(&dev->i2c_wq); | |
1da177e4 | 332 | } else { |
276e49a0 OE |
333 | u32 psr = saa7146_read(dev, PSR); |
334 | u32 ssr = saa7146_read(dev, SSR); | |
44d0b80e JP |
335 | pr_warn("%s: unexpected i2c irq: isr %08x psr %08x ssr %08x\n", |
336 | dev->name, isr, psr, ssr); | |
1da177e4 LT |
337 | } |
338 | isr &= ~(MASK_16|MASK_17); | |
339 | } | |
340 | if( 0 != isr ) { | |
44d0b80e JP |
341 | ERR("warning: interrupt enabled, but not handled properly.(0x%08x)\n", |
342 | isr); | |
343 | ERR("disabling interrupt source(s)!\n"); | |
1da177e4 LT |
344 | SAA7146_IER_DISABLE(dev,isr); |
345 | } | |
276e49a0 | 346 | saa7146_write(dev, ISR, ack_isr); |
1da177e4 LT |
347 | return IRQ_HANDLED; |
348 | } | |
349 | ||
350 | /*********************************************************************************/ | |
351 | /* configuration-functions */ | |
352 | ||
353 | static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent) | |
354 | { | |
355 | struct saa7146_pci_extension_data *pci_ext = (struct saa7146_pci_extension_data *)ent->driver_data; | |
356 | struct saa7146_extension *ext = pci_ext->ext; | |
357 | struct saa7146_dev *dev; | |
358 | int err = -ENOMEM; | |
359 | ||
7408187d PI |
360 | /* clear out mem for sure */ |
361 | dev = kzalloc(sizeof(struct saa7146_dev), GFP_KERNEL); | |
1da177e4 | 362 | if (!dev) { |
44d0b80e | 363 | ERR("out of memory\n"); |
1da177e4 LT |
364 | goto out; |
365 | } | |
366 | ||
44d0b80e | 367 | DEB_EE("pci:%p\n", pci); |
1da177e4 LT |
368 | |
369 | err = pci_enable_device(pci); | |
370 | if (err < 0) { | |
44d0b80e | 371 | ERR("pci_enable_device() failed\n"); |
230b65f9 | 372 | goto err_free; |
1da177e4 LT |
373 | } |
374 | ||
375 | /* enable bus-mastering */ | |
376 | pci_set_master(pci); | |
377 | ||
378 | dev->pci = pci; | |
379 | ||
380 | /* get chip-revision; this is needed to enable bug-fixes */ | |
abd34d8d | 381 | dev->revision = pci->revision; |
1da177e4 | 382 | |
c84e6036 | 383 | /* remap the memory from virtual to physical address */ |
1da177e4 LT |
384 | |
385 | err = pci_request_region(pci, 0, "saa7146"); | |
386 | if (err < 0) | |
387 | goto err_disable; | |
388 | ||
389 | dev->mem = ioremap(pci_resource_start(pci, 0), | |
390 | pci_resource_len(pci, 0)); | |
391 | if (!dev->mem) { | |
44d0b80e | 392 | ERR("ioremap() failed\n"); |
1da177e4 LT |
393 | err = -ENODEV; |
394 | goto err_release; | |
395 | } | |
396 | ||
397 | /* we don't do a master reset here anymore, it screws up | |
398 | some boards that don't have an i2c-eeprom for configuration | |
399 | values */ | |
400 | /* | |
401 | saa7146_write(dev, MC1, MASK_31); | |
402 | */ | |
403 | ||
404 | /* disable all irqs */ | |
405 | saa7146_write(dev, IER, 0); | |
406 | ||
407 | /* shut down all dma transfers and rps tasks */ | |
408 | saa7146_write(dev, MC1, 0x30ff0000); | |
409 | ||
410 | /* clear out any rps-signals pending */ | |
411 | saa7146_write(dev, MC2, 0xf8000000); | |
412 | ||
413 | /* request an interrupt for the saa7146 */ | |
8076fe32 | 414 | err = request_irq(pci->irq, interrupt_hw, IRQF_SHARED | IRQF_DISABLED, |
1da177e4 LT |
415 | dev->name, dev); |
416 | if (err < 0) { | |
44d0b80e | 417 | ERR("request_irq() failed\n"); |
1da177e4 LT |
418 | goto err_unmap; |
419 | } | |
420 | ||
421 | err = -ENOMEM; | |
422 | ||
423 | /* get memory for various stuff */ | |
424 | dev->d_rps0.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, | |
425 | &dev->d_rps0.dma_handle); | |
426 | if (!dev->d_rps0.cpu_addr) | |
427 | goto err_free_irq; | |
428 | memset(dev->d_rps0.cpu_addr, 0x0, SAA7146_RPS_MEM); | |
429 | ||
430 | dev->d_rps1.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, | |
431 | &dev->d_rps1.dma_handle); | |
432 | if (!dev->d_rps1.cpu_addr) | |
433 | goto err_free_rps0; | |
434 | memset(dev->d_rps1.cpu_addr, 0x0, SAA7146_RPS_MEM); | |
435 | ||
436 | dev->d_i2c.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM, | |
437 | &dev->d_i2c.dma_handle); | |
438 | if (!dev->d_i2c.cpu_addr) | |
439 | goto err_free_rps1; | |
440 | memset(dev->d_i2c.cpu_addr, 0x0, SAA7146_RPS_MEM); | |
441 | ||
442 | /* the rest + print status message */ | |
443 | ||
444 | /* create a nice device name */ | |
445 | sprintf(dev->name, "saa7146 (%d)", saa7146_num); | |
446 | ||
44d0b80e JP |
447 | pr_info("found saa7146 @ mem %p (revision %d, irq %d) (0x%04x,0x%04x)\n", |
448 | dev->mem, dev->revision, pci->irq, | |
449 | pci->subsystem_vendor, pci->subsystem_device); | |
1da177e4 LT |
450 | dev->ext = ext; |
451 | ||
9af39713 | 452 | mutex_init(&dev->v4l2_lock); |
1da177e4 LT |
453 | spin_lock_init(&dev->int_slock); |
454 | spin_lock_init(&dev->slock); | |
455 | ||
3593cab5 | 456 | mutex_init(&dev->i2c_lock); |
1da177e4 LT |
457 | |
458 | dev->module = THIS_MODULE; | |
459 | init_waitqueue_head(&dev->i2c_wq); | |
460 | ||
461 | /* set some sane pci arbitrition values */ | |
462 | saa7146_write(dev, PCI_BT_V1, 0x1c00101f); | |
463 | ||
464 | /* TODO: use the status code of the callback */ | |
465 | ||
466 | err = -ENODEV; | |
467 | ||
468 | if (ext->probe && ext->probe(dev)) { | |
44d0b80e | 469 | DEB_D("ext->probe() failed for %p. skipping device.\n", dev); |
1da177e4 LT |
470 | goto err_free_i2c; |
471 | } | |
472 | ||
473 | if (ext->attach(dev, pci_ext)) { | |
44d0b80e | 474 | DEB_D("ext->attach() failed for %p. skipping device.\n", dev); |
ef77a26b | 475 | goto err_free_i2c; |
1da177e4 | 476 | } |
230b65f9 HV |
477 | /* V4L extensions will set the pci drvdata to the v4l2_device in the |
478 | attach() above. So for those cards that do not use V4L we have to | |
479 | set it explicitly. */ | |
480 | pci_set_drvdata(pci, &dev->v4l2_dev); | |
1da177e4 | 481 | |
1da177e4 LT |
482 | saa7146_num++; |
483 | ||
484 | err = 0; | |
485 | out: | |
486 | return err; | |
487 | ||
1da177e4 LT |
488 | err_free_i2c: |
489 | pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_i2c.cpu_addr, | |
490 | dev->d_i2c.dma_handle); | |
491 | err_free_rps1: | |
492 | pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps1.cpu_addr, | |
493 | dev->d_rps1.dma_handle); | |
494 | err_free_rps0: | |
495 | pci_free_consistent(pci, SAA7146_RPS_MEM, dev->d_rps0.cpu_addr, | |
496 | dev->d_rps0.dma_handle); | |
497 | err_free_irq: | |
498 | free_irq(pci->irq, (void *)dev); | |
499 | err_unmap: | |
500 | iounmap(dev->mem); | |
501 | err_release: | |
502 | pci_release_region(pci, 0); | |
503 | err_disable: | |
504 | pci_disable_device(pci); | |
505 | err_free: | |
506 | kfree(dev); | |
507 | goto out; | |
508 | } | |
509 | ||
510 | static void saa7146_remove_one(struct pci_dev *pdev) | |
511 | { | |
ef77a26b | 512 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); |
45d80943 | 513 | struct saa7146_dev *dev = to_saa7146_dev(v4l2_dev); |
1da177e4 LT |
514 | struct { |
515 | void *addr; | |
516 | dma_addr_t dma; | |
517 | } dev_map[] = { | |
518 | { dev->d_i2c.cpu_addr, dev->d_i2c.dma_handle }, | |
519 | { dev->d_rps1.cpu_addr, dev->d_rps1.dma_handle }, | |
520 | { dev->d_rps0.cpu_addr, dev->d_rps0.dma_handle }, | |
521 | { NULL, 0 } | |
522 | }, *p; | |
523 | ||
44d0b80e | 524 | DEB_EE("dev:%p\n", dev); |
1da177e4 LT |
525 | |
526 | dev->ext->detach(dev); | |
230b65f9 HV |
527 | /* Zero the PCI drvdata after use. */ |
528 | pci_set_drvdata(pdev, NULL); | |
1da177e4 LT |
529 | |
530 | /* shut down all video dma transfers */ | |
531 | saa7146_write(dev, MC1, 0x00ff0000); | |
532 | ||
533 | /* disable all irqs, release irq-routine */ | |
534 | saa7146_write(dev, IER, 0); | |
535 | ||
536 | free_irq(pdev->irq, dev); | |
537 | ||
538 | for (p = dev_map; p->addr; p++) | |
539 | pci_free_consistent(pdev, SAA7146_RPS_MEM, p->addr, p->dma); | |
540 | ||
541 | iounmap(dev->mem); | |
542 | pci_release_region(pdev, 0); | |
1da177e4 LT |
543 | pci_disable_device(pdev); |
544 | kfree(dev); | |
545 | ||
546 | saa7146_num--; | |
547 | } | |
548 | ||
549 | /*********************************************************************************/ | |
550 | /* extension handling functions */ | |
551 | ||
552 | int saa7146_register_extension(struct saa7146_extension* ext) | |
553 | { | |
44d0b80e | 554 | DEB_EE("ext:%p\n", ext); |
1da177e4 LT |
555 | |
556 | ext->driver.name = ext->name; | |
557 | ext->driver.id_table = ext->pci_tbl; | |
558 | ext->driver.probe = saa7146_init_one; | |
559 | ext->driver.remove = saa7146_remove_one; | |
560 | ||
44d0b80e | 561 | pr_info("register extension '%s'\n", ext->name); |
178c6efc | 562 | return pci_register_driver(&ext->driver); |
1da177e4 LT |
563 | } |
564 | ||
565 | int saa7146_unregister_extension(struct saa7146_extension* ext) | |
566 | { | |
44d0b80e JP |
567 | DEB_EE("ext:%p\n", ext); |
568 | pr_info("unregister extension '%s'\n", ext->name); | |
1da177e4 LT |
569 | pci_unregister_driver(&ext->driver); |
570 | return 0; | |
571 | } | |
572 | ||
573 | EXPORT_SYMBOL_GPL(saa7146_register_extension); | |
574 | EXPORT_SYMBOL_GPL(saa7146_unregister_extension); | |
575 | ||
576 | /* misc functions used by extension modules */ | |
577 | EXPORT_SYMBOL_GPL(saa7146_pgtable_alloc); | |
578 | EXPORT_SYMBOL_GPL(saa7146_pgtable_free); | |
579 | EXPORT_SYMBOL_GPL(saa7146_pgtable_build_single); | |
580 | EXPORT_SYMBOL_GPL(saa7146_vmalloc_build_pgtable); | |
87c3019d | 581 | EXPORT_SYMBOL_GPL(saa7146_vfree_destroy_pgtable); |
1da177e4 LT |
582 | EXPORT_SYMBOL_GPL(saa7146_wait_for_debi_done); |
583 | ||
584 | EXPORT_SYMBOL_GPL(saa7146_setgpio); | |
585 | ||
1da177e4 LT |
586 | EXPORT_SYMBOL_GPL(saa7146_i2c_adapter_prepare); |
587 | ||
588 | EXPORT_SYMBOL_GPL(saa7146_debug); | |
1da177e4 LT |
589 | |
590 | MODULE_AUTHOR("Michael Hunold <michael@mihu.de>"); | |
591 | MODULE_DESCRIPTION("driver for generic saa7146-based hardware"); | |
592 | MODULE_LICENSE("GPL"); |