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v4.6
 
  1/**************************************************************************
  2 * Copyright (c) 2007-2011, Intel Corporation.
  3 * All Rights Reserved.
  4 *
  5 * This program is free software; you can redistribute it and/or modify it
  6 * under the terms and conditions of the GNU General Public License,
  7 * version 2, as published by the Free Software Foundation.
  8 *
  9 * This program is distributed in the hope it will be useful, but WITHOUT
 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12 * more details.
 13 *
 14 * You should have received a copy of the GNU General Public License along with
 15 * this program; if not, write to the Free Software Foundation, Inc.,
 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 17 *
 18 **************************************************************************/
 19
 20#include <linux/module.h>
 21#include <linux/kernel.h>
 22#include <linux/errno.h>
 23#include <linux/string.h>
 24#include <linux/pfn_t.h>
 25#include <linux/mm.h>
 26#include <linux/tty.h>
 
 27#include <linux/slab.h>
 28#include <linux/delay.h>
 29#include <linux/fb.h>
 30#include <linux/init.h>
 31#include <linux/console.h>
 32
 33#include <drm/drmP.h>
 34#include <drm/drm.h>
 35#include <drm/drm_crtc.h>
 36#include <drm/drm_fb_helper.h>
 
 
 37
 38#include "psb_drv.h"
 39#include "psb_intel_reg.h"
 40#include "psb_intel_drv.h"
 41#include "framebuffer.h"
 42#include "gtt.h"
 43
 44static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
 45static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 46					      struct drm_file *file_priv,
 47					      unsigned int *handle);
 48
 49static const struct drm_framebuffer_funcs psb_fb_funcs = {
 50	.destroy = psb_user_framebuffer_destroy,
 51	.create_handle = psb_user_framebuffer_create_handle,
 52};
 53
 54#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
 55
 56static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 57			   unsigned blue, unsigned transp,
 58			   struct fb_info *info)
 59{
 60	struct psb_fbdev *fbdev = info->par;
 61	struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
 62	uint32_t v;
 63
 64	if (!fb)
 65		return -ENOMEM;
 66
 67	if (regno > 255)
 68		return 1;
 69
 70	red = CMAP_TOHW(red, info->var.red.length);
 71	blue = CMAP_TOHW(blue, info->var.blue.length);
 72	green = CMAP_TOHW(green, info->var.green.length);
 73	transp = CMAP_TOHW(transp, info->var.transp.length);
 74
 75	v = (red << info->var.red.offset) |
 76	    (green << info->var.green.offset) |
 77	    (blue << info->var.blue.offset) |
 78	    (transp << info->var.transp.offset);
 79
 80	if (regno < 16) {
 81		switch (fb->bits_per_pixel) {
 82		case 16:
 83			((uint32_t *) info->pseudo_palette)[regno] = v;
 84			break;
 85		case 24:
 86		case 32:
 87			((uint32_t *) info->pseudo_palette)[regno] = v;
 88			break;
 89		}
 90	}
 91
 92	return 0;
 93}
 94
 95static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
 96{
 97	struct psb_fbdev *fbdev = info->par;
 98	struct psb_framebuffer *psbfb = &fbdev->pfb;
 99	struct drm_device *dev = psbfb->base.dev;
 
100
101	/*
102	 *	We have to poke our nose in here. The core fb code assumes
103	 *	panning is part of the hardware that can be invoked before
104	 *	the actual fb is mapped. In our case that isn't quite true.
105	 */
106	if (psbfb->gtt->npage) {
107		/* GTT roll shifts in 4K pages, we need to shift the right
108		   number of pages */
109		int pages = info->fix.line_length >> 12;
110		psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages);
111	}
112        return 0;
113}
114
115static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
116{
117	struct psb_framebuffer *psbfb = vma->vm_private_data;
118	struct drm_device *dev = psbfb->base.dev;
 
119	struct drm_psb_private *dev_priv = dev->dev_private;
 
120	int page_num;
121	int i;
122	unsigned long address;
123	int ret;
124	unsigned long pfn;
125	unsigned long phys_addr = (unsigned long)dev_priv->stolen_base +
126				  psbfb->gtt->offset;
127
128	page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
129	address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT);
130
131	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
132
133	for (i = 0; i < page_num; i++) {
134		pfn = (phys_addr >> PAGE_SHIFT);
135
136		ret = vm_insert_mixed(vma, address,
137				__pfn_to_pfn_t(pfn, PFN_DEV));
138		if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
139			break;
140		else if (unlikely(ret != 0)) {
141			ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
142			return ret;
143		}
144		address += PAGE_SIZE;
145		phys_addr += PAGE_SIZE;
146	}
147	return VM_FAULT_NOPAGE;
148}
149
150static void psbfb_vm_open(struct vm_area_struct *vma)
151{
152}
153
154static void psbfb_vm_close(struct vm_area_struct *vma)
155{
156}
157
158static const struct vm_operations_struct psbfb_vm_ops = {
159	.fault	= psbfb_vm_fault,
160	.open	= psbfb_vm_open,
161	.close	= psbfb_vm_close
162};
163
164static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
165{
166	struct psb_fbdev *fbdev = info->par;
167	struct psb_framebuffer *psbfb = &fbdev->pfb;
168
169	if (vma->vm_pgoff != 0)
170		return -EINVAL;
171	if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
172		return -EINVAL;
173
174	if (!psbfb->addr_space)
175		psbfb->addr_space = vma->vm_file->f_mapping;
176	/*
177	 * If this is a GEM object then info->screen_base is the virtual
178	 * kernel remapping of the object. FIXME: Review if this is
179	 * suitable for our mmap work
180	 */
181	vma->vm_ops = &psbfb_vm_ops;
182	vma->vm_private_data = (void *)psbfb;
183	vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
184	return 0;
185}
186
187static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
188						unsigned long arg)
189{
190	return -ENOTTY;
191}
192
193static struct fb_ops psbfb_ops = {
194	.owner = THIS_MODULE,
195	.fb_check_var = drm_fb_helper_check_var,
196	.fb_set_par = drm_fb_helper_set_par,
197	.fb_blank = drm_fb_helper_blank,
198	.fb_setcolreg = psbfb_setcolreg,
199	.fb_fillrect = drm_fb_helper_cfb_fillrect,
200	.fb_copyarea = psbfb_copyarea,
201	.fb_imageblit = drm_fb_helper_cfb_imageblit,
202	.fb_mmap = psbfb_mmap,
203	.fb_sync = psbfb_sync,
204	.fb_ioctl = psbfb_ioctl,
205};
206
207static struct fb_ops psbfb_roll_ops = {
208	.owner = THIS_MODULE,
209	.fb_check_var = drm_fb_helper_check_var,
210	.fb_set_par = drm_fb_helper_set_par,
211	.fb_blank = drm_fb_helper_blank,
212	.fb_setcolreg = psbfb_setcolreg,
213	.fb_fillrect = drm_fb_helper_cfb_fillrect,
214	.fb_copyarea = drm_fb_helper_cfb_copyarea,
215	.fb_imageblit = drm_fb_helper_cfb_imageblit,
216	.fb_pan_display = psbfb_pan,
217	.fb_mmap = psbfb_mmap,
218	.fb_ioctl = psbfb_ioctl,
219};
220
221static struct fb_ops psbfb_unaccel_ops = {
222	.owner = THIS_MODULE,
223	.fb_check_var = drm_fb_helper_check_var,
224	.fb_set_par = drm_fb_helper_set_par,
225	.fb_blank = drm_fb_helper_blank,
226	.fb_setcolreg = psbfb_setcolreg,
227	.fb_fillrect = drm_fb_helper_cfb_fillrect,
228	.fb_copyarea = drm_fb_helper_cfb_copyarea,
229	.fb_imageblit = drm_fb_helper_cfb_imageblit,
230	.fb_mmap = psbfb_mmap,
231	.fb_ioctl = psbfb_ioctl,
232};
233
234/**
235 *	psb_framebuffer_init	-	initialize a framebuffer
236 *	@dev: our DRM device
237 *	@fb: framebuffer to set up
238 *	@mode_cmd: mode description
239 *	@gt: backing object
240 *
241 *	Configure and fill in the boilerplate for our frame buffer. Return
242 *	0 on success or an error code if we fail.
243 */
244static int psb_framebuffer_init(struct drm_device *dev,
245					struct psb_framebuffer *fb,
246					const struct drm_mode_fb_cmd2 *mode_cmd,
247					struct gtt_range *gt)
248{
249	u32 bpp, depth;
250	int ret;
251
252	drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
 
 
 
 
 
 
253
254	if (mode_cmd->pitches[0] & 63)
255		return -EINVAL;
256	switch (bpp) {
257	case 8:
258	case 16:
259	case 24:
260	case 32:
261		break;
262	default:
263		return -EINVAL;
264	}
265	drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
266	fb->gtt = gt;
267	ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
268	if (ret) {
269		dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
270		return ret;
271	}
272	return 0;
273}
274
275/**
276 *	psb_framebuffer_create	-	create a framebuffer backed by gt
277 *	@dev: our DRM device
278 *	@mode_cmd: the description of the requested mode
279 *	@gt: the backing object
280 *
281 *	Create a framebuffer object backed by the gt, and fill in the
282 *	boilerplate required
283 *
284 *	TODO: review object references
285 */
286
287static struct drm_framebuffer *psb_framebuffer_create
288			(struct drm_device *dev,
289			 const struct drm_mode_fb_cmd2 *mode_cmd,
290			 struct gtt_range *gt)
291{
292	struct psb_framebuffer *fb;
293	int ret;
294
295	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
296	if (!fb)
297		return ERR_PTR(-ENOMEM);
298
299	ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
300	if (ret) {
301		kfree(fb);
302		return ERR_PTR(ret);
303	}
304	return &fb->base;
305}
306
307/**
308 *	psbfb_alloc		-	allocate frame buffer memory
309 *	@dev: the DRM device
310 *	@aligned_size: space needed
311 *	@force: fall back to GEM buffers if need be
312 *
313 *	Allocate the frame buffer. In the usual case we get a GTT range that
314 *	is stolen memory backed and life is simple. If there isn't sufficient
315 *	we fail as we don't have the virtual mapping space to really vmap it
316 *	and the kernel console code can't handle non linear framebuffers.
317 *
318 *	Re-address this as and if the framebuffer layer grows this ability.
319 */
320static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
321{
322	struct gtt_range *backing;
323	/* Begin by trying to use stolen memory backing */
324	backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1, PAGE_SIZE);
325	if (backing) {
326		drm_gem_private_object_init(dev, &backing->gem, aligned_size);
327		return backing;
328	}
329	return NULL;
330}
331
332/**
333 *	psbfb_create		-	create a framebuffer
334 *	@fbdev: the framebuffer device
335 *	@sizes: specification of the layout
336 *
337 *	Create a framebuffer to the specifications provided
338 */
339static int psbfb_create(struct psb_fbdev *fbdev,
340				struct drm_fb_helper_surface_size *sizes)
341{
342	struct drm_device *dev = fbdev->psb_fb_helper.dev;
343	struct drm_psb_private *dev_priv = dev->dev_private;
344	struct fb_info *info;
345	struct drm_framebuffer *fb;
346	struct psb_framebuffer *psbfb = &fbdev->pfb;
347	struct drm_mode_fb_cmd2 mode_cmd;
348	int size;
349	int ret;
350	struct gtt_range *backing;
351	u32 bpp, depth;
352	int gtt_roll = 0;
353	int pitch_lines = 0;
354
355	mode_cmd.width = sizes->surface_width;
356	mode_cmd.height = sizes->surface_height;
357	bpp = sizes->surface_bpp;
358	depth = sizes->surface_depth;
359
360	/* No 24bit packed */
361	if (bpp == 24)
362		bpp = 32;
363
364	do {
365		/*
366		 * Acceleration via the GTT requires pitch to be
367		 * power of two aligned. Preferably page but less
368		 * is ok with some fonts
369		 */
370        	mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines);
371
372        	size = mode_cmd.pitches[0] * mode_cmd.height;
373        	size = ALIGN(size, PAGE_SIZE);
374
375		/* Allocate the fb in the GTT with stolen page backing */
376		backing = psbfb_alloc(dev, size);
377
378		if (pitch_lines)
379			pitch_lines *= 2;
380		else
381			pitch_lines = 1;
382		gtt_roll++;
383	} while (backing == NULL && pitch_lines <= 16);
384
385	/* The final pitch we accepted if we succeeded */
386	pitch_lines /= 2;
387
388	if (backing == NULL) {
389		/*
390		 *	We couldn't get the space we wanted, fall back to the
391		 *	display engine requirement instead.  The HW requires
392		 *	the pitch to be 64 byte aligned
393		 */
394
395		gtt_roll = 0;	/* Don't use GTT accelerated scrolling */
396		pitch_lines = 64;
397
398		mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64);
399
400		size = mode_cmd.pitches[0] * mode_cmd.height;
401		size = ALIGN(size, PAGE_SIZE);
402
403		/* Allocate the framebuffer in the GTT with stolen page backing */
404		backing = psbfb_alloc(dev, size);
405		if (backing == NULL)
406			return -ENOMEM;
407	}
408
409	memset(dev_priv->vram_addr + backing->offset, 0, size);
410
411	info = drm_fb_helper_alloc_fbi(&fbdev->psb_fb_helper);
412	if (IS_ERR(info)) {
413		ret = PTR_ERR(info);
414		goto out_err1;
415	}
416	info->par = fbdev;
417
418	mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
419
420	ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
421	if (ret)
422		goto out_unref;
423
424	fb = &psbfb->base;
425	psbfb->fbdev = info;
426
427	fbdev->psb_fb_helper.fb = fb;
428
429	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
430	strcpy(info->fix.id, "psbdrmfb");
431
432	info->flags = FBINFO_DEFAULT;
433	if (dev_priv->ops->accel_2d && pitch_lines > 8)	/* 2D engine */
434		info->fbops = &psbfb_ops;
435	else if (gtt_roll) {	/* GTT rolling seems best */
436		info->fbops = &psbfb_roll_ops;
437		info->flags |= FBINFO_HWACCEL_YPAN;
438	} else	/* Software */
439		info->fbops = &psbfb_unaccel_ops;
440
441	info->fix.smem_start = dev->mode_config.fb_base;
442	info->fix.smem_len = size;
443	info->fix.ywrapstep = gtt_roll;
444	info->fix.ypanstep = 0;
445
446	/* Accessed stolen memory directly */
447	info->screen_base = dev_priv->vram_addr + backing->offset;
448	info->screen_size = size;
449
450	if (dev_priv->gtt.stolen_size) {
451		info->apertures->ranges[0].base = dev->mode_config.fb_base;
452		info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
453	}
454
455	drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
456				sizes->fb_width, sizes->fb_height);
457
458	info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
459	info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
460
461	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
462
463	dev_dbg(dev->dev, "allocated %dx%d fb\n",
464					psbfb->base.width, psbfb->base.height);
465
466	return 0;
467out_unref:
468	if (backing->stolen)
469		psb_gtt_free_range(dev, backing);
470	else
471		drm_gem_object_unreference_unlocked(&backing->gem);
472
473	drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
474out_err1:
475	psb_gtt_free_range(dev, backing);
476	return ret;
477}
478
479/**
480 *	psb_user_framebuffer_create	-	create framebuffer
481 *	@dev: our DRM device
482 *	@filp: client file
483 *	@cmd: mode request
484 *
485 *	Create a new framebuffer backed by a userspace GEM object
486 */
487static struct drm_framebuffer *psb_user_framebuffer_create
488			(struct drm_device *dev, struct drm_file *filp,
489			 const struct drm_mode_fb_cmd2 *cmd)
490{
491	struct gtt_range *r;
492	struct drm_gem_object *obj;
493
494	/*
495	 *	Find the GEM object and thus the gtt range object that is
496	 *	to back this space
497	 */
498	obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]);
499	if (obj == NULL)
500		return ERR_PTR(-ENOENT);
501
502	/* Let the core code do all the work */
503	r = container_of(obj, struct gtt_range, gem);
504	return psb_framebuffer_create(dev, cmd, r);
505}
506
507static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
508							u16 blue, int regno)
509{
510	struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
511
512	gma_crtc->lut_r[regno] = red >> 8;
513	gma_crtc->lut_g[regno] = green >> 8;
514	gma_crtc->lut_b[regno] = blue >> 8;
515}
516
517static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
518					u16 *green, u16 *blue, int regno)
519{
520	struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
521
522	*red = gma_crtc->lut_r[regno] << 8;
523	*green = gma_crtc->lut_g[regno] << 8;
524	*blue = gma_crtc->lut_b[regno] << 8;
525}
526
527static int psbfb_probe(struct drm_fb_helper *helper,
528				struct drm_fb_helper_surface_size *sizes)
529{
530	struct psb_fbdev *psb_fbdev =
531		container_of(helper, struct psb_fbdev, psb_fb_helper);
532	struct drm_device *dev = psb_fbdev->psb_fb_helper.dev;
533	struct drm_psb_private *dev_priv = dev->dev_private;
 
534	int bytespp;
535
536	bytespp = sizes->surface_bpp / 8;
537	if (bytespp == 3)	/* no 24bit packed */
538		bytespp = 4;
539
540	/* If the mode will not fit in 32bit then switch to 16bit to get
541	   a console on full resolution. The X mode setting server will
542	   allocate its own 32bit GEM framebuffer */
543	if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height >
544	                dev_priv->vram_stolen_size) {
 
 
 
545                sizes->surface_bpp = 16;
546                sizes->surface_depth = 16;
547        }
548
549	return psbfb_create(psb_fbdev, sizes);
550}
551
552static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
553	.gamma_set = psbfb_gamma_set,
554	.gamma_get = psbfb_gamma_get,
555	.fb_probe = psbfb_probe,
556};
557
558static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 
559{
560	struct psb_framebuffer *psbfb = &fbdev->pfb;
561
562	drm_fb_helper_unregister_fbi(&fbdev->psb_fb_helper);
563	drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
564
565	drm_fb_helper_fini(&fbdev->psb_fb_helper);
566	drm_framebuffer_unregister_private(&psbfb->base);
567	drm_framebuffer_cleanup(&psbfb->base);
 
 
 
 
568
569	if (psbfb->gtt)
570		drm_gem_object_unreference_unlocked(&psbfb->gtt->gem);
571	return 0;
572}
573
574int psb_fbdev_init(struct drm_device *dev)
575{
576	struct psb_fbdev *fbdev;
577	struct drm_psb_private *dev_priv = dev->dev_private;
578	int ret;
579
580	fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
581	if (!fbdev) {
582		dev_err(dev->dev, "no memory\n");
583		return -ENOMEM;
584	}
585
586	dev_priv->fbdev = fbdev;
587
588	drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs);
589
590	ret = drm_fb_helper_init(dev, &fbdev->psb_fb_helper,
591				 dev_priv->ops->crtcs, INTELFB_CONN_LIMIT);
592	if (ret)
593		goto free;
594
595	ret = drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
596	if (ret)
597		goto fini;
598
599	/* disable all the possible outputs/crtcs before entering KMS mode */
600	drm_helper_disable_unused_functions(dev);
601
602	ret = drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
603	if (ret)
604		goto fini;
605
606	return 0;
607
608fini:
609	drm_fb_helper_fini(&fbdev->psb_fb_helper);
610free:
611	kfree(fbdev);
612	return ret;
613}
614
615static void psb_fbdev_fini(struct drm_device *dev)
616{
617	struct drm_psb_private *dev_priv = dev->dev_private;
618
619	if (!dev_priv->fbdev)
620		return;
621
622	psb_fbdev_destroy(dev, dev_priv->fbdev);
623	kfree(dev_priv->fbdev);
624	dev_priv->fbdev = NULL;
625}
626
627static void psbfb_output_poll_changed(struct drm_device *dev)
628{
629	struct drm_psb_private *dev_priv = dev->dev_private;
630	struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
631	drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
632}
633
634/**
635 *	psb_user_framebuffer_create_handle - add hamdle to a framebuffer
636 *	@fb: framebuffer
637 *	@file_priv: our DRM file
638 *	@handle: returned handle
639 *
640 *	Our framebuffer object is a GTT range which also contains a GEM
641 *	object. We need to turn it into a handle for userspace. GEM will do
642 *	the work for us
643 */
644static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
645					      struct drm_file *file_priv,
646					      unsigned int *handle)
647{
648	struct psb_framebuffer *psbfb = to_psb_fb(fb);
649	struct gtt_range *r = psbfb->gtt;
650	return drm_gem_handle_create(file_priv, &r->gem, handle);
651}
652
653/**
654 *	psb_user_framebuffer_destroy	-	destruct user created fb
655 *	@fb: framebuffer
656 *
657 *	User framebuffers are backed by GEM objects so all we have to do is
658 *	clean up a bit and drop the reference, GEM will handle the fallout
659 */
660static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
661{
662	struct psb_framebuffer *psbfb = to_psb_fb(fb);
663	struct gtt_range *r = psbfb->gtt;
664
665	/* Let DRM do its clean up */
666	drm_framebuffer_cleanup(fb);
667	/*  We are no longer using the resource in GEM */
668	drm_gem_object_unreference_unlocked(&r->gem);
669	kfree(fb);
670}
671
672static const struct drm_mode_config_funcs psb_mode_funcs = {
673	.fb_create = psb_user_framebuffer_create,
674	.output_poll_changed = psbfb_output_poll_changed,
675};
676
677static void psb_setup_outputs(struct drm_device *dev)
678{
679	struct drm_psb_private *dev_priv = dev->dev_private;
680	struct drm_connector *connector;
681
682	drm_mode_create_scaling_mode_property(dev);
683
684	/* It is ok for this to fail - we just don't get backlight control */
685	if (!dev_priv->backlight_property)
686		dev_priv->backlight_property = drm_property_create_range(dev, 0,
687							"backlight", 0, 100);
688	dev_priv->ops->output_init(dev);
689
690	list_for_each_entry(connector, &dev->mode_config.connector_list,
691			    head) {
692		struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
693		struct drm_encoder *encoder = &gma_encoder->base;
694		int crtc_mask = 0, clone_mask = 0;
695
696		/* valid crtcs */
697		switch (gma_encoder->type) {
698		case INTEL_OUTPUT_ANALOG:
699			crtc_mask = (1 << 0);
700			clone_mask = (1 << INTEL_OUTPUT_ANALOG);
701			break;
702		case INTEL_OUTPUT_SDVO:
703			crtc_mask = dev_priv->ops->sdvo_mask;
704			clone_mask = (1 << INTEL_OUTPUT_SDVO);
705			break;
706		case INTEL_OUTPUT_LVDS:
707		        crtc_mask = dev_priv->ops->lvds_mask;
708			clone_mask = (1 << INTEL_OUTPUT_LVDS);
709			break;
710		case INTEL_OUTPUT_MIPI:
711			crtc_mask = (1 << 0);
712			clone_mask = (1 << INTEL_OUTPUT_MIPI);
713			break;
714		case INTEL_OUTPUT_MIPI2:
715			crtc_mask = (1 << 2);
716			clone_mask = (1 << INTEL_OUTPUT_MIPI2);
717			break;
718		case INTEL_OUTPUT_HDMI:
719		        crtc_mask = dev_priv->ops->hdmi_mask;
720			clone_mask = (1 << INTEL_OUTPUT_HDMI);
721			break;
722		case INTEL_OUTPUT_DISPLAYPORT:
723			crtc_mask = (1 << 0) | (1 << 1);
724			clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT);
725			break;
726		case INTEL_OUTPUT_EDP:
727			crtc_mask = (1 << 1);
728			clone_mask = (1 << INTEL_OUTPUT_EDP);
729		}
730		encoder->possible_crtcs = crtc_mask;
731		encoder->possible_clones =
732		    gma_connector_clones(dev, clone_mask);
733	}
734}
735
736void psb_modeset_init(struct drm_device *dev)
737{
738	struct drm_psb_private *dev_priv = dev->dev_private;
739	struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
740	int i;
741
742	drm_mode_config_init(dev);
743
744	dev->mode_config.min_width = 0;
745	dev->mode_config.min_height = 0;
746
747	dev->mode_config.funcs = &psb_mode_funcs;
748
749	/* set memory base */
750	/* Oaktrail and Poulsbo should use BAR 2*/
751	pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
752					&(dev->mode_config.fb_base));
753
754	/* num pipes is 2 for PSB but 1 for Mrst */
755	for (i = 0; i < dev_priv->num_pipe; i++)
756		psb_intel_crtc_init(dev, i, mode_dev);
757
758	dev->mode_config.max_width = 4096;
759	dev->mode_config.max_height = 4096;
760
761	psb_setup_outputs(dev);
762
763	if (dev_priv->ops->errata)
764	        dev_priv->ops->errata(dev);
765
766        dev_priv->modeset = true;
767}
768
769void psb_modeset_cleanup(struct drm_device *dev)
770{
771	struct drm_psb_private *dev_priv = dev->dev_private;
772	if (dev_priv->modeset) {
773		drm_kms_helper_poll_fini(dev);
774		psb_fbdev_fini(dev);
775		drm_mode_config_cleanup(dev);
776	}
777}
v5.9
  1// SPDX-License-Identifier: GPL-2.0-only
  2/**************************************************************************
  3 * Copyright (c) 2007-2011, Intel Corporation.
  4 * All Rights Reserved.
  5 *
 
 
 
 
 
 
 
 
 
 
 
 
 
  6 **************************************************************************/
  7
  8#include <linux/console.h>
  9#include <linux/delay.h>
 10#include <linux/errno.h>
 11#include <linux/init.h>
 12#include <linux/kernel.h>
 13#include <linux/mm.h>
 14#include <linux/module.h>
 15#include <linux/pfn_t.h>
 16#include <linux/slab.h>
 17#include <linux/string.h>
 18#include <linux/tty.h>
 
 
 19
 
 20#include <drm/drm.h>
 21#include <drm/drm_crtc.h>
 22#include <drm/drm_fb_helper.h>
 23#include <drm/drm_fourcc.h>
 24#include <drm/drm_gem_framebuffer_helper.h>
 25
 
 
 
 26#include "framebuffer.h"
 27#include "gtt.h"
 28#include "psb_drv.h"
 29#include "psb_intel_drv.h"
 30#include "psb_intel_reg.h"
 
 
 31
 32static const struct drm_framebuffer_funcs psb_fb_funcs = {
 33	.destroy = drm_gem_fb_destroy,
 34	.create_handle = drm_gem_fb_create_handle,
 35};
 36
 37#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
 38
 39static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 40			   unsigned blue, unsigned transp,
 41			   struct fb_info *info)
 42{
 43	struct drm_fb_helper *fb_helper = info->par;
 44	struct drm_framebuffer *fb = fb_helper->fb;
 45	uint32_t v;
 46
 47	if (!fb)
 48		return -ENOMEM;
 49
 50	if (regno > 255)
 51		return 1;
 52
 53	red = CMAP_TOHW(red, info->var.red.length);
 54	blue = CMAP_TOHW(blue, info->var.blue.length);
 55	green = CMAP_TOHW(green, info->var.green.length);
 56	transp = CMAP_TOHW(transp, info->var.transp.length);
 57
 58	v = (red << info->var.red.offset) |
 59	    (green << info->var.green.offset) |
 60	    (blue << info->var.blue.offset) |
 61	    (transp << info->var.transp.offset);
 62
 63	if (regno < 16) {
 64		switch (fb->format->cpp[0] * 8) {
 65		case 16:
 66			((uint32_t *) info->pseudo_palette)[regno] = v;
 67			break;
 68		case 24:
 69		case 32:
 70			((uint32_t *) info->pseudo_palette)[regno] = v;
 71			break;
 72		}
 73	}
 74
 75	return 0;
 76}
 77
 78static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
 79{
 80	struct drm_fb_helper *fb_helper = info->par;
 81	struct drm_framebuffer *fb = fb_helper->fb;
 82	struct drm_device *dev = fb->dev;
 83	struct gtt_range *gtt = to_gtt_range(fb->obj[0]);
 84
 85	/*
 86	 *	We have to poke our nose in here. The core fb code assumes
 87	 *	panning is part of the hardware that can be invoked before
 88	 *	the actual fb is mapped. In our case that isn't quite true.
 89	 */
 90	if (gtt->npage) {
 91		/* GTT roll shifts in 4K pages, we need to shift the right
 92		   number of pages */
 93		int pages = info->fix.line_length >> 12;
 94		psb_gtt_roll(dev, gtt, var->yoffset * pages);
 95	}
 96        return 0;
 97}
 98
 99static vm_fault_t psbfb_vm_fault(struct vm_fault *vmf)
100{
101	struct vm_area_struct *vma = vmf->vma;
102	struct drm_framebuffer *fb = vma->vm_private_data;
103	struct drm_device *dev = fb->dev;
104	struct drm_psb_private *dev_priv = dev->dev_private;
105	struct gtt_range *gtt = to_gtt_range(fb->obj[0]);
106	int page_num;
107	int i;
108	unsigned long address;
109	vm_fault_t ret = VM_FAULT_SIGBUS;
110	unsigned long pfn;
111	unsigned long phys_addr = (unsigned long)dev_priv->stolen_base +
112				  gtt->offset;
113
114	page_num = vma_pages(vma);
115	address = vmf->address - (vmf->pgoff << PAGE_SHIFT);
116
117	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
118
119	for (i = 0; i < page_num; i++) {
120		pfn = (phys_addr >> PAGE_SHIFT);
121
122		ret = vmf_insert_mixed(vma, address,
123				__pfn_to_pfn_t(pfn, PFN_DEV));
124		if (unlikely(ret & VM_FAULT_ERROR))
125			break;
 
 
 
 
126		address += PAGE_SIZE;
127		phys_addr += PAGE_SIZE;
128	}
129	return ret;
130}
131
132static void psbfb_vm_open(struct vm_area_struct *vma)
133{
134}
135
136static void psbfb_vm_close(struct vm_area_struct *vma)
137{
138}
139
140static const struct vm_operations_struct psbfb_vm_ops = {
141	.fault	= psbfb_vm_fault,
142	.open	= psbfb_vm_open,
143	.close	= psbfb_vm_close
144};
145
146static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
147{
148	struct drm_fb_helper *fb_helper = info->par;
149	struct drm_framebuffer *fb = fb_helper->fb;
150
151	if (vma->vm_pgoff != 0)
152		return -EINVAL;
153	if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
154		return -EINVAL;
155
 
 
156	/*
157	 * If this is a GEM object then info->screen_base is the virtual
158	 * kernel remapping of the object. FIXME: Review if this is
159	 * suitable for our mmap work
160	 */
161	vma->vm_ops = &psbfb_vm_ops;
162	vma->vm_private_data = (void *)fb;
163	vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
164	return 0;
165}
166
 
 
 
 
 
 
167static struct fb_ops psbfb_ops = {
168	.owner = THIS_MODULE,
169	DRM_FB_HELPER_DEFAULT_OPS,
 
 
170	.fb_setcolreg = psbfb_setcolreg,
171	.fb_fillrect = drm_fb_helper_cfb_fillrect,
172	.fb_copyarea = psbfb_copyarea,
173	.fb_imageblit = drm_fb_helper_cfb_imageblit,
174	.fb_mmap = psbfb_mmap,
175	.fb_sync = psbfb_sync,
 
176};
177
178static struct fb_ops psbfb_roll_ops = {
179	.owner = THIS_MODULE,
180	DRM_FB_HELPER_DEFAULT_OPS,
 
 
181	.fb_setcolreg = psbfb_setcolreg,
182	.fb_fillrect = drm_fb_helper_cfb_fillrect,
183	.fb_copyarea = drm_fb_helper_cfb_copyarea,
184	.fb_imageblit = drm_fb_helper_cfb_imageblit,
185	.fb_pan_display = psbfb_pan,
186	.fb_mmap = psbfb_mmap,
 
187};
188
189static struct fb_ops psbfb_unaccel_ops = {
190	.owner = THIS_MODULE,
191	DRM_FB_HELPER_DEFAULT_OPS,
 
 
192	.fb_setcolreg = psbfb_setcolreg,
193	.fb_fillrect = drm_fb_helper_cfb_fillrect,
194	.fb_copyarea = drm_fb_helper_cfb_copyarea,
195	.fb_imageblit = drm_fb_helper_cfb_imageblit,
196	.fb_mmap = psbfb_mmap,
 
197};
198
199/**
200 *	psb_framebuffer_init	-	initialize a framebuffer
201 *	@dev: our DRM device
202 *	@fb: framebuffer to set up
203 *	@mode_cmd: mode description
204 *	@gt: backing object
205 *
206 *	Configure and fill in the boilerplate for our frame buffer. Return
207 *	0 on success or an error code if we fail.
208 */
209static int psb_framebuffer_init(struct drm_device *dev,
210					struct drm_framebuffer *fb,
211					const struct drm_mode_fb_cmd2 *mode_cmd,
212					struct drm_gem_object *obj)
213{
214	const struct drm_format_info *info;
215	int ret;
216
217	/*
218	 * Reject unknown formats, YUV formats, and formats with more than
219	 * 4 bytes per pixel.
220	 */
221	info = drm_get_format_info(dev, mode_cmd);
222	if (!info || !info->depth || info->cpp[0] > 4)
223		return -EINVAL;
224
225	if (mode_cmd->pitches[0] & 63)
226		return -EINVAL;
227
228	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
229	fb->obj[0] = obj;
230	ret = drm_framebuffer_init(dev, fb, &psb_fb_funcs);
 
 
 
 
 
 
 
 
231	if (ret) {
232		dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
233		return ret;
234	}
235	return 0;
236}
237
238/**
239 *	psb_framebuffer_create	-	create a framebuffer backed by gt
240 *	@dev: our DRM device
241 *	@mode_cmd: the description of the requested mode
242 *	@gt: the backing object
243 *
244 *	Create a framebuffer object backed by the gt, and fill in the
245 *	boilerplate required
246 *
247 *	TODO: review object references
248 */
249
250static struct drm_framebuffer *psb_framebuffer_create
251			(struct drm_device *dev,
252			 const struct drm_mode_fb_cmd2 *mode_cmd,
253			 struct drm_gem_object *obj)
254{
255	struct drm_framebuffer *fb;
256	int ret;
257
258	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
259	if (!fb)
260		return ERR_PTR(-ENOMEM);
261
262	ret = psb_framebuffer_init(dev, fb, mode_cmd, obj);
263	if (ret) {
264		kfree(fb);
265		return ERR_PTR(ret);
266	}
267	return fb;
268}
269
270/**
271 *	psbfb_alloc		-	allocate frame buffer memory
272 *	@dev: the DRM device
273 *	@aligned_size: space needed
 
274 *
275 *	Allocate the frame buffer. In the usual case we get a GTT range that
276 *	is stolen memory backed and life is simple. If there isn't sufficient
277 *	we fail as we don't have the virtual mapping space to really vmap it
278 *	and the kernel console code can't handle non linear framebuffers.
279 *
280 *	Re-address this as and if the framebuffer layer grows this ability.
281 */
282static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
283{
284	struct gtt_range *backing;
285	/* Begin by trying to use stolen memory backing */
286	backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1, PAGE_SIZE);
287	if (backing) {
288		drm_gem_private_object_init(dev, &backing->gem, aligned_size);
289		return backing;
290	}
291	return NULL;
292}
293
294/**
295 *	psbfb_create		-	create a framebuffer
296 *	@fbdev: the framebuffer device
297 *	@sizes: specification of the layout
298 *
299 *	Create a framebuffer to the specifications provided
300 */
301static int psbfb_create(struct drm_fb_helper *fb_helper,
302				struct drm_fb_helper_surface_size *sizes)
303{
304	struct drm_device *dev = fb_helper->dev;
305	struct drm_psb_private *dev_priv = dev->dev_private;
306	struct fb_info *info;
307	struct drm_framebuffer *fb;
 
308	struct drm_mode_fb_cmd2 mode_cmd;
309	int size;
310	int ret;
311	struct gtt_range *backing;
312	u32 bpp, depth;
313	int gtt_roll = 0;
314	int pitch_lines = 0;
315
316	mode_cmd.width = sizes->surface_width;
317	mode_cmd.height = sizes->surface_height;
318	bpp = sizes->surface_bpp;
319	depth = sizes->surface_depth;
320
321	/* No 24bit packed */
322	if (bpp == 24)
323		bpp = 32;
324
325	do {
326		/*
327		 * Acceleration via the GTT requires pitch to be
328		 * power of two aligned. Preferably page but less
329		 * is ok with some fonts
330		 */
331        	mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines);
332
333        	size = mode_cmd.pitches[0] * mode_cmd.height;
334        	size = ALIGN(size, PAGE_SIZE);
335
336		/* Allocate the fb in the GTT with stolen page backing */
337		backing = psbfb_alloc(dev, size);
338
339		if (pitch_lines)
340			pitch_lines *= 2;
341		else
342			pitch_lines = 1;
343		gtt_roll++;
344	} while (backing == NULL && pitch_lines <= 16);
345
346	/* The final pitch we accepted if we succeeded */
347	pitch_lines /= 2;
348
349	if (backing == NULL) {
350		/*
351		 *	We couldn't get the space we wanted, fall back to the
352		 *	display engine requirement instead.  The HW requires
353		 *	the pitch to be 64 byte aligned
354		 */
355
356		gtt_roll = 0;	/* Don't use GTT accelerated scrolling */
357		pitch_lines = 64;
358
359		mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64);
360
361		size = mode_cmd.pitches[0] * mode_cmd.height;
362		size = ALIGN(size, PAGE_SIZE);
363
364		/* Allocate the framebuffer in the GTT with stolen page backing */
365		backing = psbfb_alloc(dev, size);
366		if (backing == NULL)
367			return -ENOMEM;
368	}
369
370	memset(dev_priv->vram_addr + backing->offset, 0, size);
371
372	info = drm_fb_helper_alloc_fbi(fb_helper);
373	if (IS_ERR(info)) {
374		ret = PTR_ERR(info);
375		goto out;
376	}
 
377
378	mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
379
380	fb = psb_framebuffer_create(dev, &mode_cmd, &backing->gem);
381	if (IS_ERR(fb)) {
382		ret = PTR_ERR(fb);
383		goto out;
384	}
 
 
 
385
386	fb_helper->fb = fb;
 
387
 
388	if (dev_priv->ops->accel_2d && pitch_lines > 8)	/* 2D engine */
389		info->fbops = &psbfb_ops;
390	else if (gtt_roll) {	/* GTT rolling seems best */
391		info->fbops = &psbfb_roll_ops;
392		info->flags |= FBINFO_HWACCEL_YPAN;
393	} else	/* Software */
394		info->fbops = &psbfb_unaccel_ops;
395
396	info->fix.smem_start = dev->mode_config.fb_base;
397	info->fix.smem_len = size;
398	info->fix.ywrapstep = gtt_roll;
399	info->fix.ypanstep = 0;
400
401	/* Accessed stolen memory directly */
402	info->screen_base = dev_priv->vram_addr + backing->offset;
403	info->screen_size = size;
404
405	if (dev_priv->gtt.stolen_size) {
406		info->apertures->ranges[0].base = dev->mode_config.fb_base;
407		info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
408	}
409
410	drm_fb_helper_fill_info(info, fb_helper, sizes);
 
411
412	info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
413	info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
414
415	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
416
417	dev_dbg(dev->dev, "allocated %dx%d fb\n", fb->width, fb->height);
 
418
419	return 0;
420out:
 
 
 
 
 
 
 
421	psb_gtt_free_range(dev, backing);
422	return ret;
423}
424
425/**
426 *	psb_user_framebuffer_create	-	create framebuffer
427 *	@dev: our DRM device
428 *	@filp: client file
429 *	@cmd: mode request
430 *
431 *	Create a new framebuffer backed by a userspace GEM object
432 */
433static struct drm_framebuffer *psb_user_framebuffer_create
434			(struct drm_device *dev, struct drm_file *filp,
435			 const struct drm_mode_fb_cmd2 *cmd)
436{
 
437	struct drm_gem_object *obj;
438
439	/*
440	 *	Find the GEM object and thus the gtt range object that is
441	 *	to back this space
442	 */
443	obj = drm_gem_object_lookup(filp, cmd->handles[0]);
444	if (obj == NULL)
445		return ERR_PTR(-ENOENT);
446
447	/* Let the core code do all the work */
448	return psb_framebuffer_create(dev, cmd, obj);
 
 
 
 
 
 
 
 
 
 
 
449}
450
451static int psbfb_probe(struct drm_fb_helper *fb_helper,
 
 
 
 
 
 
 
 
 
 
452				struct drm_fb_helper_surface_size *sizes)
453{
454	struct drm_device *dev = fb_helper->dev;
 
 
455	struct drm_psb_private *dev_priv = dev->dev_private;
456	unsigned int fb_size;
457	int bytespp;
458
459	bytespp = sizes->surface_bpp / 8;
460	if (bytespp == 3)	/* no 24bit packed */
461		bytespp = 4;
462
463	/* If the mode will not fit in 32bit then switch to 16bit to get
464	   a console on full resolution. The X mode setting server will
465	   allocate its own 32bit GEM framebuffer */
466	fb_size = ALIGN(sizes->surface_width * bytespp, 64) *
467		  sizes->surface_height;
468	fb_size = ALIGN(fb_size, PAGE_SIZE);
469
470	if (fb_size > dev_priv->vram_stolen_size) {
471                sizes->surface_bpp = 16;
472                sizes->surface_depth = 16;
473        }
474
475	return psbfb_create(fb_helper, sizes);
476}
477
478static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 
 
479	.fb_probe = psbfb_probe,
480};
481
482static int psb_fbdev_destroy(struct drm_device *dev,
483			     struct drm_fb_helper *fb_helper)
484{
485	struct drm_framebuffer *fb = fb_helper->fb;
486
487	drm_fb_helper_unregister_fbi(fb_helper);
 
488
489	drm_fb_helper_fini(fb_helper);
490	drm_framebuffer_unregister_private(fb);
491	drm_framebuffer_cleanup(fb);
492
493	if (fb->obj[0])
494		drm_gem_object_put(fb->obj[0]);
495	kfree(fb);
496
 
 
497	return 0;
498}
499
500int psb_fbdev_init(struct drm_device *dev)
501{
502	struct drm_fb_helper *fb_helper;
503	struct drm_psb_private *dev_priv = dev->dev_private;
504	int ret;
505
506	fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
507	if (!fb_helper) {
508		dev_err(dev->dev, "no memory\n");
509		return -ENOMEM;
510	}
511
512	dev_priv->fb_helper = fb_helper;
513
514	drm_fb_helper_prepare(dev, fb_helper, &psb_fb_helper_funcs);
515
516	ret = drm_fb_helper_init(dev, fb_helper);
 
517	if (ret)
518		goto free;
519
 
 
 
 
520	/* disable all the possible outputs/crtcs before entering KMS mode */
521	drm_helper_disable_unused_functions(dev);
522
523	ret = drm_fb_helper_initial_config(fb_helper, 32);
524	if (ret)
525		goto fini;
526
527	return 0;
528
529fini:
530	drm_fb_helper_fini(fb_helper);
531free:
532	kfree(fb_helper);
533	return ret;
534}
535
536static void psb_fbdev_fini(struct drm_device *dev)
537{
538	struct drm_psb_private *dev_priv = dev->dev_private;
539
540	if (!dev_priv->fb_helper)
541		return;
542
543	psb_fbdev_destroy(dev, dev_priv->fb_helper);
544	kfree(dev_priv->fb_helper);
545	dev_priv->fb_helper = NULL;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
546}
547
548static const struct drm_mode_config_funcs psb_mode_funcs = {
549	.fb_create = psb_user_framebuffer_create,
550	.output_poll_changed = drm_fb_helper_output_poll_changed,
551};
552
553static void psb_setup_outputs(struct drm_device *dev)
554{
555	struct drm_psb_private *dev_priv = dev->dev_private;
556	struct drm_connector *connector;
557
558	drm_mode_create_scaling_mode_property(dev);
559
560	/* It is ok for this to fail - we just don't get backlight control */
561	if (!dev_priv->backlight_property)
562		dev_priv->backlight_property = drm_property_create_range(dev, 0,
563							"backlight", 0, 100);
564	dev_priv->ops->output_init(dev);
565
566	list_for_each_entry(connector, &dev->mode_config.connector_list,
567			    head) {
568		struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
569		struct drm_encoder *encoder = &gma_encoder->base;
570		int crtc_mask = 0, clone_mask = 0;
571
572		/* valid crtcs */
573		switch (gma_encoder->type) {
574		case INTEL_OUTPUT_ANALOG:
575			crtc_mask = (1 << 0);
576			clone_mask = (1 << INTEL_OUTPUT_ANALOG);
577			break;
578		case INTEL_OUTPUT_SDVO:
579			crtc_mask = dev_priv->ops->sdvo_mask;
580			clone_mask = 0;
581			break;
582		case INTEL_OUTPUT_LVDS:
583			crtc_mask = dev_priv->ops->lvds_mask;
584			clone_mask = 0;
585			break;
586		case INTEL_OUTPUT_MIPI:
587			crtc_mask = (1 << 0);
588			clone_mask = 0;
589			break;
590		case INTEL_OUTPUT_MIPI2:
591			crtc_mask = (1 << 2);
592			clone_mask = 0;
593			break;
594		case INTEL_OUTPUT_HDMI:
595			crtc_mask = dev_priv->ops->hdmi_mask;
596			clone_mask = (1 << INTEL_OUTPUT_HDMI);
597			break;
598		case INTEL_OUTPUT_DISPLAYPORT:
599			crtc_mask = (1 << 0) | (1 << 1);
600			clone_mask = 0;
601			break;
602		case INTEL_OUTPUT_EDP:
603			crtc_mask = (1 << 1);
604			clone_mask = 0;
605		}
606		encoder->possible_crtcs = crtc_mask;
607		encoder->possible_clones =
608		    gma_connector_clones(dev, clone_mask);
609	}
610}
611
612void psb_modeset_init(struct drm_device *dev)
613{
614	struct drm_psb_private *dev_priv = dev->dev_private;
615	struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
616	int i;
617
618	drm_mode_config_init(dev);
619
620	dev->mode_config.min_width = 0;
621	dev->mode_config.min_height = 0;
622
623	dev->mode_config.funcs = &psb_mode_funcs;
624
625	/* set memory base */
626	/* Oaktrail and Poulsbo should use BAR 2*/
627	pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
628					&(dev->mode_config.fb_base));
629
630	/* num pipes is 2 for PSB but 1 for Mrst */
631	for (i = 0; i < dev_priv->num_pipe; i++)
632		psb_intel_crtc_init(dev, i, mode_dev);
633
634	dev->mode_config.max_width = 4096;
635	dev->mode_config.max_height = 4096;
636
637	psb_setup_outputs(dev);
638
639	if (dev_priv->ops->errata)
640	        dev_priv->ops->errata(dev);
641
642        dev_priv->modeset = true;
643}
644
645void psb_modeset_cleanup(struct drm_device *dev)
646{
647	struct drm_psb_private *dev_priv = dev->dev_private;
648	if (dev_priv->modeset) {
649		drm_kms_helper_poll_fini(dev);
650		psb_fbdev_fini(dev);
651		drm_mode_config_cleanup(dev);
652	}
653}