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