aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/gma500/psb_drv.c
blob: a2d881b894a34c3b96df171db9a27d7d1ce1dcde (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
/**************************************************************************
 * Copyright (c) 2007-2011, Intel Corporation.
 * All Rights Reserved.
 * Copyright (c) 2008, Tungsten Graphics, Inc. Cedar Park, TX., USA.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 **************************************************************************/

#include <drm/drmP.h>
#include <drm/drm.h>
#include "gma_drm.h"
#include "psb_drv.h"
#include "framebuffer.h"
#include "psb_reg.h"
#include "psb_intel_reg.h"
#include "intel_bios.h"
#include "mid_bios.h"
#include <drm/drm_pciids.h>
#include "power.h"
#include <linux/cpu.h>
#include <linux/notifier.h>
#include <linux/spinlock.h>
#include <linux/pm_runtime.h>
#include <acpi/video.h>
#include <linux/module.h>

static int drm_psb_trap_pagefaults;

int drm_psb_no_fb;

static int psb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);

MODULE_PARM_DESC(no_fb, "Disable FBdev");
MODULE_PARM_DESC(trap_pagefaults, "Error and reset on MMU pagefaults");
module_param_named(no_fb, drm_psb_no_fb, int, 0600);
module_param_named(trap_pagefaults, drm_psb_trap_pagefaults, int, 0600);


static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
	{ 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
	{ 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
#if defined(CONFIG_DRM_GMA600)
	{ 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4103, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4105, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
	{ 0x8086, 0x4107, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
#endif
#if defined(CONFIG_DRM_CDV)
	{ 0x8086, 0x0be0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
	{ 0x8086, 0x0be7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops},
#endif
	{ 0, 0, 0}
};
MODULE_DEVICE_TABLE(pci, pciidlist);

/*
 * Standard IOCTLs.
 */

#define DRM_IOCTL_PSB_ADB	\
		DRM_IOWR(DRM_GMA_ADB + DRM_COMMAND_BASE, uint32_t)
#define DRM_IOCTL_PSB_MODE_OPERATION	\
		DRM_IOWR(DRM_GMA_MODE_OPERATION + DRM_COMMAND_BASE, \
			 struct drm_psb_mode_operation_arg)
#define DRM_IOCTL_PSB_STOLEN_MEMORY	\
		DRM_IOWR(DRM_GMA_STOLEN_MEMORY + DRM_COMMAND_BASE, \
			 struct drm_psb_stolen_memory_arg)
#define DRM_IOCTL_PSB_GAMMA	\
		DRM_IOWR(DRM_GMA_GAMMA + DRM_COMMAND_BASE, \
			 struct drm_psb_dpst_lut_arg)
#define DRM_IOCTL_PSB_DPST_BL	\
		DRM_IOWR(DRM_GMA_DPST_BL + DRM_COMMAND_BASE, \
			 uint32_t)
#define DRM_IOCTL_PSB_GET_PIPE_FROM_CRTC_ID	\
		DRM_IOWR(DRM_GMA_GET_PIPE_FROM_CRTC_ID + DRM_COMMAND_BASE, \
			 struct drm_psb_get_pipe_from_crtc_id_arg)
#define DRM_IOCTL_PSB_GEM_CREATE	\
		DRM_IOWR(DRM_GMA_GEM_CREATE + DRM_COMMAND_BASE, \
			 struct drm_psb_gem_create)
#define DRM_IOCTL_PSB_GEM_MMAP	\
		DRM_IOWR(DRM_GMA_GEM_MMAP + DRM_COMMAND_BASE, \
			 struct drm_psb_gem_mmap)

static int psb_adb_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
static int psb_mode_operation_ioctl(struct drm_device *dev, void *data,
				    struct drm_file *file_priv);
static int psb_stolen_memory_ioctl(struct drm_device *dev, void *data,
				   struct drm_file *file_priv);
static int psb_gamma_ioctl(struct drm_device *dev, void *data,
			   struct drm_file *file_priv);
static int psb_dpst_bl_ioctl(struct drm_device *dev, void *data,
			     struct drm_file *file_priv);

#define PSB_IOCTL_DEF(ioctl, func, flags) \
	[DRM_IOCTL_NR(ioctl) - DRM_COMMAND_BASE] = {ioctl, flags, func}

static struct drm_ioctl_desc psb_ioctls[] = {
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_ADB, psb_adb_ioctl, DRM_AUTH),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_MODE_OPERATION, psb_mode_operation_ioctl,
		      DRM_AUTH),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_STOLEN_MEMORY, psb_stolen_memory_ioctl,
		      DRM_AUTH),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_GAMMA, psb_gamma_ioctl, DRM_AUTH),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_DPST_BL, psb_dpst_bl_ioctl, DRM_AUTH),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_GET_PIPE_FROM_CRTC_ID,
					psb_intel_get_pipe_from_crtc_id, 0),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_GEM_CREATE, psb_gem_create_ioctl,
						DRM_UNLOCKED | DRM_AUTH),
	PSB_IOCTL_DEF(DRM_IOCTL_PSB_GEM_MMAP, psb_gem_mmap_ioctl,
						DRM_UNLOCKED | DRM_AUTH),
};

static void psb_lastclose(struct drm_device *dev)
{
	return;
}

static void psb_do_takedown(struct drm_device *dev)
{
}

static int psb_do_init(struct drm_device *dev)
{
	struct drm_psb_private *dev_priv = dev->dev_private;
	struct psb_gtt *pg = &dev_priv->gtt;

	uint32_t stolen_gtt;

	int ret = -ENOMEM;

	if (pg->mmu_gatt_start & 0x0FFFFFFF) {
		dev_err(dev->dev, "Gatt must be 256M aligned. This is a bug.\n");
		ret = -EINVAL;
		goto out_err;
	}


	stolen_gtt = (pg->stolen_size >> PAGE_SHIFT) * 4;
	stolen_gtt = (stolen_gtt + PAGE_SIZE - 1) >> PAGE_SHIFT;
	stolen_gtt =
	    (stolen_gtt < pg->gtt_pages) ? stolen_gtt : pg->gtt_pages;

	dev_priv->gatt_free_offset = pg->mmu_gatt_start +
	    (stolen_gtt << PAGE_SHIFT) * 1024;

	if (1 || drm_debug) {
		uint32_t core_id = PSB_RSGX32(PSB_CR_CORE_ID);
		uint32_t core_rev = PSB_RSGX32(PSB_CR_CORE_REVISION);
		DRM_INFO("SGX core id = 0x%08x\n", core_id);
		DRM_INFO("SGX core rev major = 0x%02x, minor = 0x%02x\n",
			 (core_rev & _PSB_CC_REVISION_MAJOR_MASK) >>
			 _PSB_CC_REVISION_MAJOR_SHIFT,
			 (core_rev & _PSB_CC_REVISION_MINOR_MASK) >>
			 _PSB_CC_REVISION_MINOR_SHIFT);
		DRM_INFO
		    ("SGX core rev maintenance = 0x%02x, designer = 0x%02x\n",
		     (core_rev & _PSB_CC_REVISION_MAINTENANCE_MASK) >>
		     _PSB_CC_REVISION_MAINTENANCE_SHIFT,
		     (core_rev & _PSB_CC_REVISION_DESIGNER_MASK) >>
		     _PSB_CC_REVISION_DESIGNER_SHIFT);
	}


	spin_lock_init(&dev_priv->irqmask_lock);
	spin_lock_init(&dev_priv->lock_2d);

	PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0);
	PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1);
	PSB_RSGX32(PSB_CR_BIF_BANK1);
	PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_MMU_ER_MASK,
							PSB_CR_BIF_CTRL);
	psb_spank(dev_priv);

	/* mmu_gatt ?? */
	PSB_WSGX32(pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
	return 0;
out_err:
	psb_do_takedown(dev);
	return ret;
}

static int psb_driver_unload(struct drm_device *dev)
{
	struct drm_psb_private *dev_priv = dev->dev_private;

	/* Kill vblank etc here */

	gma_backlight_exit(dev);

	if (drm_psb_no_fb == 0)
		psb_modeset_cleanup(dev);

	if (dev_priv) {
		psb_lid_timer_takedown(dev_priv);
		gma_intel_opregion_exit(dev);

		if (dev_priv->ops->chip_teardown)
			dev_priv->ops->chip_teardown(dev);
		psb_do_takedown(dev);


		if (dev_priv->pf_pd) {
			psb_mmu_free_pagedir(dev_priv->pf_pd);
			dev_priv->pf_pd = NULL;
		}
		if (dev_priv->mmu) {
			struct psb_gtt *pg = &dev_priv->gtt;

			down_read(&pg->sem);
			psb_mmu_remove_pfn_sequence(
				psb_mmu_get_default_pd
				(dev_priv->mmu),
				pg->mmu_gatt_start,
				dev_priv->vram_stolen_size >> PAGE_SHIFT);
			up_read(&pg->sem);
			psb_mmu_driver_takedown(dev_priv->mmu);
			dev_priv->mmu = NULL;
		}
		psb_gtt_takedown(dev);
		if (dev_priv->scratch_page) {
			__free_page(dev_priv->scratch_page);
			dev_priv->scratch_page = NULL;
		}
		if (dev_priv->vdc_reg) {
			iounmap(dev_priv->vdc_reg);
			dev_priv->vdc_reg = NULL;
		}
		if (dev_priv->sgx_reg) {
			iounmap(dev_priv->sgx_reg);
			dev_priv->sgx_reg = NULL;
		}

		kfree(dev_priv);
		dev->dev_private = NULL;

		/*destroy VBT data*/
		psb_intel_destroy_bios(dev);
	}

	gma_power_uninit(dev);

	return 0;
}


static int psb_driver_load(struct drm_device *dev, unsigned long chipset)
{
	struct drm_psb_private *dev_priv;
	unsigned long resource_start;
	struct psb_gtt *pg;
	unsigned long irqflags;
	int ret = -ENOMEM;
	uint32_t tt_pages;
	struct drm_connector *connector;
	struct psb_intel_encoder *psb_intel_encoder;

	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
	if (dev_priv == NULL)
		return -ENOMEM;

	dev_priv->ops = (struct psb_ops *)chipset;
	dev_priv->dev = dev;
	dev->dev_private = (void *) dev_priv;

	if (!IS_PSB(dev)) {
		if (pci_enable_msi(dev->pdev))
			dev_warn(dev->dev, "Enabling MSI failed!\n");
	}

	dev_priv->num_pipe = dev_priv->ops->pipes;

	resource_start = pci_resource_start(dev->pdev, PSB_MMIO_RESOURCE);

	dev_priv->vdc_reg =
	    ioremap(resource_start + PSB_VDC_OFFSET, PSB_VDC_SIZE);
	if (!dev_priv->vdc_reg)
		goto out_err;

	dev_priv->sgx_reg = ioremap(resource_start + dev_priv->ops->sgx_offset,
							PSB_SGX_SIZE);
	if (!dev_priv->sgx_reg)
		goto out_err;

	ret = dev_priv->ops->chip_setup(dev);
	if (ret)
		goto out_err;

	/* Init OSPM support */
	gma_power_init(dev);

	ret = -ENOMEM;

	dev_priv->scratch_page = alloc_page(GFP_DMA32 | __GFP_ZERO);
	if (!dev_priv->scratch_page)
		goto out_err;

	set_pages_uc(dev_priv->scratch_page, 1);

	ret = psb_gtt_init(dev, 0);
	if (ret)
		goto out_err;

	dev_priv->mmu = psb_mmu_driver_init((void *)0,
					drm_psb_trap_pagefaults, 0,
					dev_priv);
	if (!dev_priv->mmu)
		goto out_err;

	pg = &dev_priv->gtt;

	tt_pages = (pg->gatt_pages < PSB_TT_PRIV0_PLIMIT) ?
		(pg->gatt_pages) : PSB_TT_PRIV0_PLIMIT;


	dev_priv->pf_pd = psb_mmu_alloc_pd(dev_priv->mmu, 1, 0);
	if (!dev_priv->pf_pd)
		goto out_err;

	psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0);
	psb_mmu_set_pd_context(dev_priv->pf_pd, 1);

	ret = psb_do_init(dev);
	if (ret)
		return ret;

	PSB_WSGX32(0x20000000, PSB_CR_PDS_EXEC_BASE);
	PSB_WSGX32(0x30000000, PSB_CR_BIF_3D_REQ_BASE);

/*	igd_opregion_init(&dev_priv->opregion_dev); */
	acpi_video_register();
	if (dev_priv->lid_state)
		psb_lid_timer_init(dev_priv);

	ret = drm_vblank_init(dev, dev_priv->num_pipe);
	if (ret)
		goto out_err;

	/*
	 * Install interrupt handlers prior to powering off SGX or else we will
	 * crash.
	 */
	dev_priv->vdc_irq_mask = 0;
	dev_priv->pipestat[0] = 0;
	dev_priv->pipestat[1] = 0;
	dev_priv->pipestat[2] = 0;
	spin_lock_irqsave(&dev_priv->irqmask_lock, irqflags);
	PSB_WVDC32(0xFFFFFFFF, PSB_HWSTAM);
	PSB_WVDC32(0x00000000, PSB_INT_ENABLE_R);
	PSB_WVDC32(0xFFFFFFFF, PSB_INT_MASK_R);
	spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags);
	if (IS_PSB(dev) && drm_core_check_feature(dev, DRIVER_MODESET))
		drm_irq_install(dev);

	dev->vblank_disable_allowed = 1;

	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */

	dev->driver->get_vblank_counter = psb_get_vblank_counter;

	if (drm_psb_no_fb == 0) {
		psb_modeset_init(dev);
		psb_fbdev_init(dev);
		drm_kms_helper_poll_init(dev);
	}

	/* Only add backlight support if we have LVDS output */
	list_for_each_entry(connector, &dev->mode_config.connector_list,
			    head) {
		psb_intel_encoder = psb_intel_attached_encoder(connector);

		switch (psb_intel_encoder->type) {
		case INTEL_OUTPUT_LVDS:
		case INTEL_OUTPUT_MIPI:
			ret = gma_backlight_init(dev);
			break;
		}
	}

	if (ret)
		return ret;
#if 0
	/*enable runtime pm at last*/
	pm_runtime_enable(&dev->pdev->dev);
	pm_runtime_set_active(&dev->pdev->dev);
#endif
	/*Intel drm driver load is done, continue doing pvr load*/
	return 0;
out_err:
	psb_driver_unload(dev);
	return ret;
}

int psb_driver_device_is_agp(struct drm_device *dev)
{
	return 0;
}

static inline void get_brightness(struct backlight_device *bd)
{
#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
	if (bd) {
		bd->props.brightness = bd->ops->get_brightness(bd);
		backlight_update_status(bd);
	}
#endif
}

static int psb_dpst_bl_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv)
{
	struct drm_psb_private *dev_priv = psb_priv(dev);
	uint32_t *arg = data;

	dev_priv->blc_adj2 = *arg;
	get_brightness(dev_priv->backlight_device);
	return 0;
}

static int psb_adb_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	struct drm_psb_private *dev_priv = psb_priv(dev);
	uint32_t *arg = data;

	dev_priv->blc_adj1 = *arg;
	get_brightness(dev_priv->backlight_device);
	return 0;
}

static int psb_gamma_ioctl(struct drm_device *dev, void *data,
			   struct drm_file *file_priv)
{
	struct drm_psb_dpst_lut_arg *lut_arg = data;
	struct drm_mode_object *obj;
	struct drm_crtc *crtc;
	struct drm_connector *connector;
	struct psb_intel_crtc *psb_intel_crtc;
	int i = 0;
	int32_t obj_id;

	obj_id = lut_arg->output_id;
	obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_CONNECTOR);
	if (!obj) {
		dev_dbg(dev->dev, "Invalid Connector object.\n");
		return -EINVAL;
	}

	connector = obj_to_connector(obj);
	crtc = connector->encoder->crtc;
	psb_intel_crtc = to_psb_intel_crtc(crtc);

	for (i = 0; i < 256; i++)
		psb_intel_crtc->lut_adj[i] = lut_arg->lut[i];

	psb_intel_crtc_load_lut(crtc);

	return 0;
}

static int psb_mode_operation_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{
	uint32_t obj_id;
	uint16_t op;
	struct drm_mode_modeinfo *umode;
	struct drm_display_mode *mode = NULL;
	struct drm_psb_mode_operation_arg *arg;
	struct drm_mode_object *obj;
	struct drm_connector *connector;
	struct drm_connector_helper_funcs *connector_funcs;
	int ret = 0;
	int resp = MODE_OK;

	arg = (struct drm_psb_mode_operation_arg *)data;
	obj_id = arg->obj_id;
	op = arg->operation;

	switch (op) {
	case PSB_MODE_OPERATION_MODE_VALID:
		umode = &arg->mode;

		mutex_lock(&dev->mode_config.mutex);

		obj = drm_mode_object_find(dev, obj_id,
					DRM_MODE_OBJECT_CONNECTOR);
		if (!obj) {
			ret = -EINVAL;
			goto mode_op_out;
		}

		connector = obj_to_connector(obj);

		mode = drm_mode_create(dev);
		if (!mode) {
			ret = -ENOMEM;
			goto mode_op_out;
		}

		/* drm_crtc_convert_umode(mode, umode); */
		{
			mode->clock = umode->clock;
			mode->hdisplay = umode->hdisplay;
			mode->hsync_start = umode->hsync_start;
			mode->hsync_end = umode->hsync_end;
			mode->htotal = umode->htotal;
			mode->hskew = umode->hskew;
			mode->vdisplay = umode->vdisplay;
			mode->vsync_start = umode->vsync_start;
			mode->vsync_end = umode->vsync_end;
			mode->vtotal = umode->vtotal;
			mode->vscan = umode->vscan;
			mode->vrefresh = umode->vrefresh;
			mode->flags = umode->flags;
			mode->type = umode->type;
			strncpy(mode->name, umode->name, DRM_DISPLAY_MODE_LEN);
			mode->name[DRM_DISPLAY_MODE_LEN-1] = 0;
		}

		connector_funcs = (struct drm_connector_helper_funcs *)
				   connector->helper_private;

		if (connector_funcs->mode_valid) {
			resp = connector_funcs->mode_valid(connector, mode);
			arg->data = resp;
		}

		/*do some clean up work*/
		if (mode)
			drm_mode_destroy(dev, mode);
mode_op_out:
		mutex_unlock(&dev->mode_config.mutex);
		return ret;

	default:
		dev_dbg(dev->dev, "Unsupported psb mode operation\n");
		return -EOPNOTSUPP;
	}

	return 0;
}

static int psb_stolen_memory_ioctl(struct drm_device *dev, void *data,
				   struct drm_file *file_priv)
{
	struct drm_psb_private *dev_priv = psb_priv(dev);
	struct drm_psb_stolen_memory_arg *arg = data;

	arg->base = dev_priv->stolen_base;
	arg->size = dev_priv->vram_stolen_size;

	return 0;
}

static int psb_driver_open(struct drm_device *dev, struct drm_file *priv)
{
	return 0;
}

static void psb_driver_close(struct drm_device *dev, struct drm_file *priv)
{
}

static long psb_unlocked_ioctl(struct file *filp, unsigned int cmd,
			       unsigned long arg)
{
	struct drm_file *file_priv = filp->private_data;
	struct drm_device *dev = file_priv->minor->dev;
	struct drm_psb_private *dev_priv = dev->dev_private;
	static unsigned int runtime_allowed;

	if (runtime_allowed == 1 && dev_priv->is_lvds_on) {
		runtime_allowed++;
		pm_runtime_allow(&dev->pdev->dev);
		dev_priv->rpm_enabled = 1;
	}
	return drm_ioctl(filp, cmd, arg);
	/* FIXME: do we need to wrap the other side of this */
}


/* When a client dies:
 *    - Check for and clean up flipped page state
 */
void psb_driver_preclose(struct drm_device *dev, struct drm_file *priv)
{
}

static void psb_remove(struct pci_dev *pdev)
{
	struct drm_device *dev = pci_get_drvdata(pdev);
	drm_put_dev(dev);
}

static const struct dev_pm_ops psb_pm_ops = {
	.resume = gma_power_resume,
	.suspend = gma_power_suspend,
	.runtime_suspend = psb_runtime_suspend,
	.runtime_resume = psb_runtime_resume,
	.runtime_idle = psb_runtime_idle,
};

static struct vm_operations_struct psb_gem_vm_ops = {
	.fault = psb_gem_fault,
	.open = drm_gem_vm_open,
	.close = drm_gem_vm_close,
};

static const struct file_operations psb_gem_fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.release = drm_release,
	.unlocked_ioctl = psb_unlocked_ioctl,
	.mmap = drm_gem_mmap,
	.poll = drm_poll,
	.fasync = drm_fasync,
	.read = drm_read,
};

static struct drm_driver driver = {
	.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | \
			   DRIVER_IRQ_VBL | DRIVER_MODESET | DRIVER_GEM ,
	.load = psb_driver_load,
	.unload = psb_driver_unload,

	.ioctls = psb_ioctls,
	.num_ioctls = DRM_ARRAY_SIZE(psb_ioctls),
	.device_is_agp = psb_driver_device_is_agp,
	.irq_preinstall = psb_irq_preinstall,
	.irq_postinstall = psb_irq_postinstall,
	.irq_uninstall = psb_irq_uninstall,
	.irq_handler = psb_irq_handler,
	.enable_vblank = psb_enable_vblank,
	.disable_vblank = psb_disable_vblank,
	.get_vblank_counter = psb_get_vblank_counter,
	.lastclose = psb_lastclose,
	.open = psb_driver_open,
	.preclose = psb_driver_preclose,
	.postclose = psb_driver_close,
	.reclaim_buffers = drm_core_reclaim_buffers,

	.gem_init_object = psb_gem_init_object,
	.gem_free_object = psb_gem_free_object,
	.gem_vm_ops = &psb_gem_vm_ops,
	.dumb_create = psb_gem_dumb_create,
	.dumb_map_offset = psb_gem_dumb_map_gtt,
	.dumb_destroy = psb_gem_dumb_destroy,
	.fops = &psb_gem_fops,
	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = PSB_DRM_DRIVER_DATE,
	.major = PSB_DRM_DRIVER_MAJOR,
	.minor = PSB_DRM_DRIVER_MINOR,
	.patchlevel = PSB_DRM_DRIVER_PATCHLEVEL
};

static struct pci_driver psb_pci_driver = {
	.name = DRIVER_NAME,
	.id_table = pciidlist,
	.probe = psb_probe,
	.remove = psb_remove,
	.driver.pm = &psb_pm_ops,
};

static int psb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	return drm_get_pci_dev(pdev, ent, &driver);
}

static int __init psb_init(void)
{
	return drm_pci_init(&driver, &psb_pci_driver);
}

static void __exit psb_exit(void)
{
	drm_pci_exit(&driver, &psb_pci_driver);
}

late_initcall(psb_init);
module_exit(psb_exit);

MODULE_AUTHOR("Alan Cox <alan@linux.intel.com> and others");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");