1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
4 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
5 * Copyright 2009 Jonathan Corbet <corbet@lwn.net>
6 */
7
8 /*
9 * Core code for the Via multifunction framebuffer device.
10 */
11 #include <linux/aperture.h>
12 #include <linux/export.h>
13 #include <linux/via-core.h>
14 #include <linux/via_i2c.h>
15 #include "via-gpio.h"
16 #include "global.h"
17
18 #include <linux/module.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
21 #include <linux/list.h>
22 #include <linux/pm.h>
23
24 /*
25 * The default port config.
26 */
27 static struct via_port_cfg adap_configs[] = {
28 [VIA_PORT_26] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x26 },
29 [VIA_PORT_31] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x31 },
30 [VIA_PORT_25] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x25 },
31 [VIA_PORT_2C] = { VIA_PORT_GPIO, VIA_MODE_I2C, VIASR, 0x2c },
32 [VIA_PORT_3D] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x3d },
33 { 0, 0, 0, 0 }
34 };
35
36 /*
37 * The OLPC XO-1.5 puts the camera power and reset lines onto
38 * GPIO 2C.
39 */
40 static struct via_port_cfg olpc_adap_configs[] = {
41 [VIA_PORT_26] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x26 },
42 [VIA_PORT_31] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x31 },
43 [VIA_PORT_25] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x25 },
44 [VIA_PORT_2C] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x2c },
45 [VIA_PORT_3D] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x3d },
46 { 0, 0, 0, 0 }
47 };
48
49 /*
50 * We currently only support one viafb device (will there ever be
51 * more than one?), so just declare it globally here.
52 */
53 static struct viafb_dev global_dev;
54
55
56 /*
57 * Basic register access; spinlock required.
58 */
viafb_mmio_write(int reg,u32 v)59 static inline void viafb_mmio_write(int reg, u32 v)
60 {
61 iowrite32(v, global_dev.engine_mmio + reg);
62 }
63
viafb_mmio_read(int reg)64 static inline int viafb_mmio_read(int reg)
65 {
66 return ioread32(global_dev.engine_mmio + reg);
67 }
68
69 /* ---------------------------------------------------------------------- */
70 /*
71 * Interrupt management. We have a single IRQ line for a lot of
72 * different functions, so we need to share it. The design here
73 * is that we don't want to reimplement the shared IRQ code here;
74 * we also want to avoid having contention for a single handler thread.
75 * So each subdev driver which needs interrupts just requests
76 * them directly from the kernel. We just have what's needed for
77 * overall access to the interrupt control register.
78 */
79
80 /*
81 * Which interrupts are enabled now?
82 */
83 static u32 viafb_enabled_ints;
84
viafb_int_init(void)85 static void viafb_int_init(void)
86 {
87 viafb_enabled_ints = 0;
88
89 viafb_mmio_write(VDE_INTERRUPT, 0);
90 }
91
92 /*
93 * Allow subdevs to ask for specific interrupts to be enabled. These
94 * functions must be called with reg_lock held
95 */
viafb_irq_enable(u32 mask)96 void viafb_irq_enable(u32 mask)
97 {
98 viafb_enabled_ints |= mask;
99 viafb_mmio_write(VDE_INTERRUPT, viafb_enabled_ints | VDE_I_ENABLE);
100 }
101 EXPORT_SYMBOL_GPL(viafb_irq_enable);
102
viafb_irq_disable(u32 mask)103 void viafb_irq_disable(u32 mask)
104 {
105 viafb_enabled_ints &= ~mask;
106 if (viafb_enabled_ints == 0)
107 viafb_mmio_write(VDE_INTERRUPT, 0); /* Disable entirely */
108 else
109 viafb_mmio_write(VDE_INTERRUPT,
110 viafb_enabled_ints | VDE_I_ENABLE);
111 }
112 EXPORT_SYMBOL_GPL(viafb_irq_disable);
113
114 /* ---------------------------------------------------------------------- */
115 /*
116 * Currently, the camera driver is the only user of the DMA code, so we
117 * only compile it in if the camera driver is being built. Chances are,
118 * most viafb systems will not need to have this extra code for a while.
119 * As soon as another user comes long, the ifdef can be removed.
120 */
121 #if IS_ENABLED(CONFIG_VIDEO_VIA_CAMERA)
122 /*
123 * Access to the DMA engine. This currently provides what the camera
124 * driver needs (i.e. outgoing only) but is easily expandable if need
125 * be.
126 */
127
128 /*
129 * There are four DMA channels in the vx855. For now, we only
130 * use one of them, though. Most of the time, the DMA channel
131 * will be idle, so we keep the IRQ handler unregistered except
132 * when some subsystem has indicated an interest.
133 */
134 static int viafb_dma_users;
135 static DECLARE_COMPLETION(viafb_dma_completion);
136 /*
137 * This mutex protects viafb_dma_users and our global interrupt
138 * registration state; it also serializes access to the DMA
139 * engine.
140 */
141 static DEFINE_MUTEX(viafb_dma_lock);
142
143 /*
144 * The VX855 DMA descriptor (used for s/g transfers) looks
145 * like this.
146 */
147 struct viafb_vx855_dma_descr {
148 u32 addr_low; /* Low part of phys addr */
149 u32 addr_high; /* High 12 bits of addr */
150 u32 fb_offset; /* Offset into FB memory */
151 u32 seg_size; /* Size, 16-byte units */
152 u32 tile_mode; /* "tile mode" setting */
153 u32 next_desc_low; /* Next descriptor addr */
154 u32 next_desc_high;
155 u32 pad; /* Fill out to 64 bytes */
156 };
157
158 /*
159 * Flags added to the "next descriptor low" pointers
160 */
161 #define VIAFB_DMA_MAGIC 0x01 /* ??? Just has to be there */
162 #define VIAFB_DMA_FINAL_SEGMENT 0x02 /* Final segment */
163
164 /*
165 * The completion IRQ handler.
166 */
viafb_dma_irq(int irq,void * data)167 static irqreturn_t viafb_dma_irq(int irq, void *data)
168 {
169 int csr;
170 irqreturn_t ret = IRQ_NONE;
171
172 spin_lock(&global_dev.reg_lock);
173 csr = viafb_mmio_read(VDMA_CSR0);
174 if (csr & VDMA_C_DONE) {
175 viafb_mmio_write(VDMA_CSR0, VDMA_C_DONE);
176 complete(&viafb_dma_completion);
177 ret = IRQ_HANDLED;
178 }
179 spin_unlock(&global_dev.reg_lock);
180 return ret;
181 }
182
183 /*
184 * Indicate a need for DMA functionality.
185 */
viafb_request_dma(void)186 int viafb_request_dma(void)
187 {
188 int ret = 0;
189
190 /*
191 * Only VX855 is supported currently.
192 */
193 if (global_dev.chip_type != UNICHROME_VX855)
194 return -ENODEV;
195 /*
196 * Note the new user and set up our interrupt handler
197 * if need be.
198 */
199 mutex_lock(&viafb_dma_lock);
200 viafb_dma_users++;
201 if (viafb_dma_users == 1) {
202 ret = request_irq(global_dev.pdev->irq, viafb_dma_irq,
203 IRQF_SHARED, "via-dma", &viafb_dma_users);
204 if (ret)
205 viafb_dma_users--;
206 else
207 viafb_irq_enable(VDE_I_DMA0TDEN);
208 }
209 mutex_unlock(&viafb_dma_lock);
210 return ret;
211 }
212 EXPORT_SYMBOL_GPL(viafb_request_dma);
213
viafb_release_dma(void)214 void viafb_release_dma(void)
215 {
216 mutex_lock(&viafb_dma_lock);
217 viafb_dma_users--;
218 if (viafb_dma_users == 0) {
219 viafb_irq_disable(VDE_I_DMA0TDEN);
220 free_irq(global_dev.pdev->irq, &viafb_dma_users);
221 }
222 mutex_unlock(&viafb_dma_lock);
223 }
224 EXPORT_SYMBOL_GPL(viafb_release_dma);
225
226 /*
227 * Do a scatter/gather DMA copy from FB memory. You must have done
228 * a successful call to viafb_request_dma() first.
229 */
viafb_dma_copy_out_sg(unsigned int offset,struct scatterlist * sg,int nsg)230 int viafb_dma_copy_out_sg(unsigned int offset, struct scatterlist *sg, int nsg)
231 {
232 struct viafb_vx855_dma_descr *descr;
233 void *descrpages;
234 dma_addr_t descr_handle;
235 unsigned long flags;
236 int i;
237 struct scatterlist *sgentry;
238 dma_addr_t nextdesc;
239
240 /*
241 * Get a place to put the descriptors.
242 */
243 descrpages = dma_alloc_coherent(&global_dev.pdev->dev,
244 nsg*sizeof(struct viafb_vx855_dma_descr),
245 &descr_handle, GFP_KERNEL);
246 if (descrpages == NULL) {
247 dev_err(&global_dev.pdev->dev, "Unable to get descr page.\n");
248 return -ENOMEM;
249 }
250 mutex_lock(&viafb_dma_lock);
251 /*
252 * Fill them in.
253 */
254 descr = descrpages;
255 nextdesc = descr_handle + sizeof(struct viafb_vx855_dma_descr);
256 for_each_sg(sg, sgentry, nsg, i) {
257 dma_addr_t paddr = sg_dma_address(sgentry);
258 descr->addr_low = paddr & 0xfffffff0;
259 descr->addr_high = ((u64) paddr >> 32) & 0x0fff;
260 descr->fb_offset = offset;
261 descr->seg_size = sg_dma_len(sgentry) >> 4;
262 descr->tile_mode = 0;
263 descr->next_desc_low = (nextdesc&0xfffffff0) | VIAFB_DMA_MAGIC;
264 descr->next_desc_high = ((u64) nextdesc >> 32) & 0x0fff;
265 descr->pad = 0xffffffff; /* VIA driver does this */
266 offset += sg_dma_len(sgentry);
267 nextdesc += sizeof(struct viafb_vx855_dma_descr);
268 descr++;
269 }
270 descr[-1].next_desc_low = VIAFB_DMA_FINAL_SEGMENT|VIAFB_DMA_MAGIC;
271 /*
272 * Program the engine.
273 */
274 spin_lock_irqsave(&global_dev.reg_lock, flags);
275 init_completion(&viafb_dma_completion);
276 viafb_mmio_write(VDMA_DQWCR0, 0);
277 viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_DONE);
278 viafb_mmio_write(VDMA_MR0, VDMA_MR_TDIE | VDMA_MR_CHAIN);
279 viafb_mmio_write(VDMA_DPRL0, descr_handle | VIAFB_DMA_MAGIC);
280 viafb_mmio_write(VDMA_DPRH0,
281 (((u64)descr_handle >> 32) & 0x0fff) | 0xf0000);
282 (void) viafb_mmio_read(VDMA_CSR0);
283 viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_START);
284 spin_unlock_irqrestore(&global_dev.reg_lock, flags);
285 /*
286 * Now we just wait until the interrupt handler says
287 * we're done. Except that, actually, we need to wait a little
288 * longer: the interrupts seem to jump the gun a little and we
289 * get corrupted frames sometimes.
290 */
291 wait_for_completion_timeout(&viafb_dma_completion, 1);
292 msleep(1);
293 if ((viafb_mmio_read(VDMA_CSR0)&VDMA_C_DONE) == 0)
294 printk(KERN_ERR "VIA DMA timeout!\n");
295 /*
296 * Clean up and we're done.
297 */
298 viafb_mmio_write(VDMA_CSR0, VDMA_C_DONE);
299 viafb_mmio_write(VDMA_MR0, 0); /* Reset int enable */
300 mutex_unlock(&viafb_dma_lock);
301 dma_free_coherent(&global_dev.pdev->dev,
302 nsg*sizeof(struct viafb_vx855_dma_descr), descrpages,
303 descr_handle);
304 return 0;
305 }
306 EXPORT_SYMBOL_GPL(viafb_dma_copy_out_sg);
307 #endif /* CONFIG_VIDEO_VIA_CAMERA */
308
309 /* ---------------------------------------------------------------------- */
310 /*
311 * Figure out how big our framebuffer memory is. Kind of ugly,
312 * but evidently we can't trust the information found in the
313 * fbdev configuration area.
314 */
315 static u16 via_function3[] = {
316 CLE266_FUNCTION3, KM400_FUNCTION3, CN400_FUNCTION3, CN700_FUNCTION3,
317 CX700_FUNCTION3, KM800_FUNCTION3, KM890_FUNCTION3, P4M890_FUNCTION3,
318 P4M900_FUNCTION3, VX800_FUNCTION3, VX855_FUNCTION3, VX900_FUNCTION3,
319 };
320
321 /* Get the BIOS-configured framebuffer size from PCI configuration space
322 * of function 3 in the respective chipset */
viafb_get_fb_size_from_pci(int chip_type)323 static int viafb_get_fb_size_from_pci(int chip_type)
324 {
325 int i;
326 u8 offset = 0;
327 u32 FBSize;
328 u32 VideoMemSize;
329
330 /* search for the "FUNCTION3" device in this chipset */
331 for (i = 0; i < ARRAY_SIZE(via_function3); i++) {
332 struct pci_dev *pdev;
333
334 pdev = pci_get_device(PCI_VENDOR_ID_VIA, via_function3[i],
335 NULL);
336 if (!pdev)
337 continue;
338
339 DEBUG_MSG(KERN_INFO "Device ID = %x\n", pdev->device);
340
341 switch (pdev->device) {
342 case CLE266_FUNCTION3:
343 case KM400_FUNCTION3:
344 offset = 0xE0;
345 break;
346 case CN400_FUNCTION3:
347 case CN700_FUNCTION3:
348 case CX700_FUNCTION3:
349 case KM800_FUNCTION3:
350 case KM890_FUNCTION3:
351 case P4M890_FUNCTION3:
352 case P4M900_FUNCTION3:
353 case VX800_FUNCTION3:
354 case VX855_FUNCTION3:
355 case VX900_FUNCTION3:
356 /*case CN750_FUNCTION3: */
357 offset = 0xA0;
358 break;
359 }
360
361 if (!offset)
362 break;
363
364 pci_read_config_dword(pdev, offset, &FBSize);
365 pci_dev_put(pdev);
366 }
367
368 if (!offset) {
369 printk(KERN_ERR "cannot determine framebuffer size\n");
370 return -EIO;
371 }
372
373 FBSize = FBSize & 0x00007000;
374 DEBUG_MSG(KERN_INFO "FB Size = %x\n", FBSize);
375
376 if (chip_type < UNICHROME_CX700) {
377 switch (FBSize) {
378 case 0x00004000:
379 VideoMemSize = (16 << 20); /*16M */
380 break;
381
382 case 0x00005000:
383 VideoMemSize = (32 << 20); /*32M */
384 break;
385
386 case 0x00006000:
387 VideoMemSize = (64 << 20); /*64M */
388 break;
389
390 default:
391 VideoMemSize = (32 << 20); /*32M */
392 break;
393 }
394 } else {
395 switch (FBSize) {
396 case 0x00001000:
397 VideoMemSize = (8 << 20); /*8M */
398 break;
399
400 case 0x00002000:
401 VideoMemSize = (16 << 20); /*16M */
402 break;
403
404 case 0x00003000:
405 VideoMemSize = (32 << 20); /*32M */
406 break;
407
408 case 0x00004000:
409 VideoMemSize = (64 << 20); /*64M */
410 break;
411
412 case 0x00005000:
413 VideoMemSize = (128 << 20); /*128M */
414 break;
415
416 case 0x00006000:
417 VideoMemSize = (256 << 20); /*256M */
418 break;
419
420 case 0x00007000: /* Only on VX855/875 */
421 VideoMemSize = (512 << 20); /*512M */
422 break;
423
424 default:
425 VideoMemSize = (32 << 20); /*32M */
426 break;
427 }
428 }
429
430 return VideoMemSize;
431 }
432
433
434 /*
435 * Figure out and map our MMIO regions.
436 */
via_pci_setup_mmio(struct viafb_dev * vdev)437 static int via_pci_setup_mmio(struct viafb_dev *vdev)
438 {
439 int ret;
440 /*
441 * Hook up to the device registers. Note that we soldier
442 * on if it fails; the framebuffer can operate (without
443 * acceleration) without this region.
444 */
445 vdev->engine_start = pci_resource_start(vdev->pdev, 1);
446 vdev->engine_len = pci_resource_len(vdev->pdev, 1);
447 vdev->engine_mmio = ioremap(vdev->engine_start,
448 vdev->engine_len);
449 if (vdev->engine_mmio == NULL)
450 dev_err(&vdev->pdev->dev,
451 "Unable to map engine MMIO; operation will be "
452 "slow and crippled.\n");
453 /*
454 * Map in framebuffer memory. For now, failure here is
455 * fatal. Unfortunately, in the absence of significant
456 * vmalloc space, failure here is also entirely plausible.
457 * Eventually we want to move away from mapping this
458 * entire region.
459 */
460 if (vdev->chip_type == UNICHROME_VX900)
461 vdev->fbmem_start = pci_resource_start(vdev->pdev, 2);
462 else
463 vdev->fbmem_start = pci_resource_start(vdev->pdev, 0);
464 ret = vdev->fbmem_len = viafb_get_fb_size_from_pci(vdev->chip_type);
465 if (ret < 0)
466 goto out_unmap;
467
468 /* try to map less memory on failure, 8 MB should be still enough */
469 for (; vdev->fbmem_len >= 8 << 20; vdev->fbmem_len /= 2) {
470 vdev->fbmem = ioremap_wc(vdev->fbmem_start, vdev->fbmem_len);
471 if (vdev->fbmem)
472 break;
473 }
474
475 if (vdev->fbmem == NULL) {
476 ret = -ENOMEM;
477 goto out_unmap;
478 }
479 return 0;
480 out_unmap:
481 iounmap(vdev->engine_mmio);
482 return ret;
483 }
484
via_pci_teardown_mmio(struct viafb_dev * vdev)485 static void via_pci_teardown_mmio(struct viafb_dev *vdev)
486 {
487 iounmap(vdev->fbmem);
488 iounmap(vdev->engine_mmio);
489 }
490
491 /*
492 * Create our subsidiary devices.
493 */
494 static struct viafb_subdev_info {
495 char *name;
496 struct platform_device *platdev;
497 } viafb_subdevs[] = {
498 {
499 .name = "viafb-gpio",
500 },
501 {
502 .name = "viafb-i2c",
503 },
504 #if IS_ENABLED(CONFIG_VIDEO_VIA_CAMERA)
505 {
506 .name = "viafb-camera",
507 },
508 #endif
509 };
510 #define N_SUBDEVS ARRAY_SIZE(viafb_subdevs)
511
via_create_subdev(struct viafb_dev * vdev,struct viafb_subdev_info * info)512 static int via_create_subdev(struct viafb_dev *vdev,
513 struct viafb_subdev_info *info)
514 {
515 int ret;
516
517 info->platdev = platform_device_alloc(info->name, -1);
518 if (!info->platdev) {
519 dev_err(&vdev->pdev->dev, "Unable to allocate pdev %s\n",
520 info->name);
521 return -ENOMEM;
522 }
523 info->platdev->dev.parent = &vdev->pdev->dev;
524 info->platdev->dev.platform_data = vdev;
525 ret = platform_device_add(info->platdev);
526 if (ret) {
527 dev_err(&vdev->pdev->dev, "Unable to add pdev %s\n",
528 info->name);
529 platform_device_put(info->platdev);
530 info->platdev = NULL;
531 }
532 return ret;
533 }
534
via_setup_subdevs(struct viafb_dev * vdev)535 static int via_setup_subdevs(struct viafb_dev *vdev)
536 {
537 int i;
538
539 /*
540 * Ignore return values. Even if some of the devices
541 * fail to be created, we'll still be able to use some
542 * of the rest.
543 */
544 for (i = 0; i < N_SUBDEVS; i++)
545 via_create_subdev(vdev, viafb_subdevs + i);
546 return 0;
547 }
548
via_teardown_subdevs(void)549 static void via_teardown_subdevs(void)
550 {
551 int i;
552
553 for (i = 0; i < N_SUBDEVS; i++)
554 if (viafb_subdevs[i].platdev) {
555 viafb_subdevs[i].platdev->dev.platform_data = NULL;
556 platform_device_unregister(viafb_subdevs[i].platdev);
557 }
558 }
559
560 /*
561 * Power management functions
562 */
563 static __maybe_unused LIST_HEAD(viafb_pm_hooks);
564 static __maybe_unused DEFINE_MUTEX(viafb_pm_hooks_lock);
565
viafb_pm_register(struct viafb_pm_hooks * hooks)566 void viafb_pm_register(struct viafb_pm_hooks *hooks)
567 {
568 INIT_LIST_HEAD(&hooks->list);
569
570 mutex_lock(&viafb_pm_hooks_lock);
571 list_add_tail(&hooks->list, &viafb_pm_hooks);
572 mutex_unlock(&viafb_pm_hooks_lock);
573 }
574 EXPORT_SYMBOL_GPL(viafb_pm_register);
575
viafb_pm_unregister(struct viafb_pm_hooks * hooks)576 void viafb_pm_unregister(struct viafb_pm_hooks *hooks)
577 {
578 mutex_lock(&viafb_pm_hooks_lock);
579 list_del(&hooks->list);
580 mutex_unlock(&viafb_pm_hooks_lock);
581 }
582 EXPORT_SYMBOL_GPL(viafb_pm_unregister);
583
via_suspend(struct device * dev)584 static int __maybe_unused via_suspend(struct device *dev)
585 {
586 struct viafb_pm_hooks *hooks;
587
588 /*
589 * "I've occasionally hit a few drivers that caused suspend
590 * failures, and each and every time it was a driver bug, and
591 * the right thing to do was to just ignore the error and suspend
592 * anyway - returning an error code and trying to undo the suspend
593 * is not what anybody ever really wants, even if our model
594 *_allows_ for it."
595 * -- Linus Torvalds, Dec. 7, 2009
596 */
597 mutex_lock(&viafb_pm_hooks_lock);
598 list_for_each_entry_reverse(hooks, &viafb_pm_hooks, list)
599 hooks->suspend(hooks->private);
600 mutex_unlock(&viafb_pm_hooks_lock);
601
602 return 0;
603 }
604
via_resume(struct device * dev)605 static int __maybe_unused via_resume(struct device *dev)
606 {
607 struct viafb_pm_hooks *hooks;
608
609 /* Now bring back any subdevs */
610 mutex_lock(&viafb_pm_hooks_lock);
611 list_for_each_entry(hooks, &viafb_pm_hooks, list)
612 hooks->resume(hooks->private);
613 mutex_unlock(&viafb_pm_hooks_lock);
614
615 return 0;
616 }
617
via_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)618 static int via_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
619 {
620 int ret;
621
622 ret = aperture_remove_conflicting_pci_devices(pdev, "viafb");
623 if (ret)
624 return ret;
625
626 ret = pci_enable_device(pdev);
627 if (ret)
628 return ret;
629
630 /*
631 * Global device initialization.
632 */
633 memset(&global_dev, 0, sizeof(global_dev));
634 global_dev.pdev = pdev;
635 global_dev.chip_type = ent->driver_data;
636 global_dev.port_cfg = adap_configs;
637 if (machine_is_olpc())
638 global_dev.port_cfg = olpc_adap_configs;
639
640 spin_lock_init(&global_dev.reg_lock);
641 ret = via_pci_setup_mmio(&global_dev);
642 if (ret)
643 goto out_disable;
644 /*
645 * Set up interrupts and create our subdevices. Continue even if
646 * some things fail.
647 */
648 viafb_int_init();
649 via_setup_subdevs(&global_dev);
650 /*
651 * Set up the framebuffer device
652 */
653 ret = via_fb_pci_probe(&global_dev);
654 if (ret)
655 goto out_subdevs;
656 return 0;
657
658 out_subdevs:
659 via_teardown_subdevs();
660 via_pci_teardown_mmio(&global_dev);
661 out_disable:
662 pci_disable_device(pdev);
663 return ret;
664 }
665
via_pci_remove(struct pci_dev * pdev)666 static void via_pci_remove(struct pci_dev *pdev)
667 {
668 via_teardown_subdevs();
669 via_fb_pci_remove(pdev);
670 via_pci_teardown_mmio(&global_dev);
671 pci_disable_device(pdev);
672 }
673
674
675 static const struct pci_device_id via_pci_table[] = {
676 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CLE266_DID),
677 .driver_data = UNICHROME_CLE266 },
678 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_K400_DID),
679 .driver_data = UNICHROME_K400 },
680 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_K800_DID),
681 .driver_data = UNICHROME_K800 },
682 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_PM800_DID),
683 .driver_data = UNICHROME_PM800 },
684 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CN700_DID),
685 .driver_data = UNICHROME_CN700 },
686 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CX700_DID),
687 .driver_data = UNICHROME_CX700 },
688 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CN750_DID),
689 .driver_data = UNICHROME_CN750 },
690 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_K8M890_DID),
691 .driver_data = UNICHROME_K8M890 },
692 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_P4M890_DID),
693 .driver_data = UNICHROME_P4M890 },
694 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_P4M900_DID),
695 .driver_data = UNICHROME_P4M900 },
696 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX800_DID),
697 .driver_data = UNICHROME_VX800 },
698 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX855_DID),
699 .driver_data = UNICHROME_VX855 },
700 { PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX900_DID),
701 .driver_data = UNICHROME_VX900 },
702 { }
703 };
704 MODULE_DEVICE_TABLE(pci, via_pci_table);
705
706 static const struct dev_pm_ops via_pm_ops = {
707 #ifdef CONFIG_PM_SLEEP
708 .suspend = via_suspend,
709 .resume = via_resume,
710 .freeze = NULL,
711 .thaw = via_resume,
712 .poweroff = NULL,
713 .restore = via_resume,
714 #endif
715 };
716
717 static struct pci_driver via_driver = {
718 .name = "viafb",
719 .id_table = via_pci_table,
720 .probe = via_pci_probe,
721 .remove = via_pci_remove,
722 .driver.pm = &via_pm_ops,
723 };
724
via_core_init(void)725 static int __init via_core_init(void)
726 {
727 int ret;
728
729 if (fb_modesetting_disabled("viafb"))
730 return -ENODEV;
731
732 ret = viafb_init();
733 if (ret)
734 return ret;
735 viafb_i2c_init();
736 viafb_gpio_init();
737 ret = pci_register_driver(&via_driver);
738 if (ret) {
739 viafb_gpio_exit();
740 viafb_i2c_exit();
741 return ret;
742 }
743
744 return 0;
745 }
746
via_core_exit(void)747 static void __exit via_core_exit(void)
748 {
749 pci_unregister_driver(&via_driver);
750 viafb_gpio_exit();
751 viafb_i2c_exit();
752 viafb_exit();
753 }
754
755 module_init(via_core_init);
756 module_exit(via_core_exit);
757