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/mm.h>
25 #include <linux/tty.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
28 #include <linux/fb.h>
29 #include <linux/init.h>
30 #include <linux/console.h>
31
32 #include <drm/drmP.h>
33 #include <drm/drm.h>
34 #include <drm/drm_crtc.h>
35 #include <drm/drm_fb_helper.h>
36
37 #include "psb_drv.h"
38 #include "psb_intel_reg.h"
39 #include "psb_intel_drv.h"
40 #include "framebuffer.h"
41 #include "gtt.h"
42
43 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
44 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
45 struct drm_file *file_priv,
46 unsigned int *handle);
47
48 static const struct drm_framebuffer_funcs psb_fb_funcs = {
49 .destroy = psb_user_framebuffer_destroy,
50 .create_handle = psb_user_framebuffer_create_handle,
51 };
52
53 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
54
psbfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)55 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
56 unsigned blue, unsigned transp,
57 struct fb_info *info)
58 {
59 struct psb_fbdev *fbdev = info->par;
60 struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
61 uint32_t v;
62
63 if (!fb)
64 return -ENOMEM;
65
66 if (regno > 255)
67 return 1;
68
69 red = CMAP_TOHW(red, info->var.red.length);
70 blue = CMAP_TOHW(blue, info->var.blue.length);
71 green = CMAP_TOHW(green, info->var.green.length);
72 transp = CMAP_TOHW(transp, info->var.transp.length);
73
74 v = (red << info->var.red.offset) |
75 (green << info->var.green.offset) |
76 (blue << info->var.blue.offset) |
77 (transp << info->var.transp.offset);
78
79 if (regno < 16) {
80 switch (fb->bits_per_pixel) {
81 case 16:
82 ((uint32_t *) info->pseudo_palette)[regno] = v;
83 break;
84 case 24:
85 case 32:
86 ((uint32_t *) info->pseudo_palette)[regno] = v;
87 break;
88 }
89 }
90
91 return 0;
92 }
93
psbfb_pan(struct fb_var_screeninfo * var,struct fb_info * info)94 static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
95 {
96 struct psb_fbdev *fbdev = info->par;
97 struct psb_framebuffer *psbfb = &fbdev->pfb;
98 struct drm_device *dev = psbfb->base.dev;
99
100 /*
101 * We have to poke our nose in here. The core fb code assumes
102 * panning is part of the hardware that can be invoked before
103 * the actual fb is mapped. In our case that isn't quite true.
104 */
105 if (psbfb->gtt->npage) {
106 /* GTT roll shifts in 4K pages, we need to shift the right
107 number of pages */
108 int pages = info->fix.line_length >> 12;
109 psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages);
110 }
111 return 0;
112 }
113
psbfb_vm_fault(struct vm_area_struct * vma,struct vm_fault * vmf)114 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
115 {
116 struct psb_framebuffer *psbfb = vma->vm_private_data;
117 struct drm_device *dev = psbfb->base.dev;
118 struct drm_psb_private *dev_priv = dev->dev_private;
119 int page_num;
120 int i;
121 unsigned long address;
122 int ret;
123 unsigned long pfn;
124 unsigned long phys_addr = (unsigned long)dev_priv->stolen_base +
125 psbfb->gtt->offset;
126
127 page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
128 address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT);
129
130 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
131
132 for (i = 0; i < page_num; i++) {
133 pfn = (phys_addr >> PAGE_SHIFT);
134
135 ret = vm_insert_mixed(vma, address, pfn);
136 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
137 break;
138 else if (unlikely(ret != 0)) {
139 ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
140 return ret;
141 }
142 address += PAGE_SIZE;
143 phys_addr += PAGE_SIZE;
144 }
145 return VM_FAULT_NOPAGE;
146 }
147
psbfb_vm_open(struct vm_area_struct * vma)148 static void psbfb_vm_open(struct vm_area_struct *vma)
149 {
150 }
151
psbfb_vm_close(struct vm_area_struct * vma)152 static void psbfb_vm_close(struct vm_area_struct *vma)
153 {
154 }
155
156 static const struct vm_operations_struct psbfb_vm_ops = {
157 .fault = psbfb_vm_fault,
158 .open = psbfb_vm_open,
159 .close = psbfb_vm_close
160 };
161
psbfb_mmap(struct fb_info * info,struct vm_area_struct * vma)162 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
163 {
164 struct psb_fbdev *fbdev = info->par;
165 struct psb_framebuffer *psbfb = &fbdev->pfb;
166
167 if (vma->vm_pgoff != 0)
168 return -EINVAL;
169 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
170 return -EINVAL;
171
172 if (!psbfb->addr_space)
173 psbfb->addr_space = vma->vm_file->f_mapping;
174 /*
175 * If this is a GEM object then info->screen_base is the virtual
176 * kernel remapping of the object. FIXME: Review if this is
177 * suitable for our mmap work
178 */
179 vma->vm_ops = &psbfb_vm_ops;
180 vma->vm_private_data = (void *)psbfb;
181 vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
182 return 0;
183 }
184
psbfb_ioctl(struct fb_info * info,unsigned int cmd,unsigned long arg)185 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
186 unsigned long arg)
187 {
188 return -ENOTTY;
189 }
190
191 static struct fb_ops psbfb_ops = {
192 .owner = THIS_MODULE,
193 .fb_check_var = drm_fb_helper_check_var,
194 .fb_set_par = drm_fb_helper_set_par,
195 .fb_blank = drm_fb_helper_blank,
196 .fb_setcolreg = psbfb_setcolreg,
197 .fb_fillrect = cfb_fillrect,
198 .fb_copyarea = psbfb_copyarea,
199 .fb_imageblit = cfb_imageblit,
200 .fb_mmap = psbfb_mmap,
201 .fb_sync = psbfb_sync,
202 .fb_ioctl = psbfb_ioctl,
203 };
204
205 static struct fb_ops psbfb_roll_ops = {
206 .owner = THIS_MODULE,
207 .fb_check_var = drm_fb_helper_check_var,
208 .fb_set_par = drm_fb_helper_set_par,
209 .fb_blank = drm_fb_helper_blank,
210 .fb_setcolreg = psbfb_setcolreg,
211 .fb_fillrect = cfb_fillrect,
212 .fb_copyarea = cfb_copyarea,
213 .fb_imageblit = cfb_imageblit,
214 .fb_pan_display = psbfb_pan,
215 .fb_mmap = psbfb_mmap,
216 .fb_ioctl = psbfb_ioctl,
217 };
218
219 static struct fb_ops psbfb_unaccel_ops = {
220 .owner = THIS_MODULE,
221 .fb_check_var = drm_fb_helper_check_var,
222 .fb_set_par = drm_fb_helper_set_par,
223 .fb_blank = drm_fb_helper_blank,
224 .fb_setcolreg = psbfb_setcolreg,
225 .fb_fillrect = cfb_fillrect,
226 .fb_copyarea = cfb_copyarea,
227 .fb_imageblit = cfb_imageblit,
228 .fb_mmap = psbfb_mmap,
229 .fb_ioctl = psbfb_ioctl,
230 };
231
232 /**
233 * psb_framebuffer_init - initialize a framebuffer
234 * @dev: our DRM device
235 * @fb: framebuffer to set up
236 * @mode_cmd: mode description
237 * @gt: backing object
238 *
239 * Configure and fill in the boilerplate for our frame buffer. Return
240 * 0 on success or an error code if we fail.
241 */
psb_framebuffer_init(struct drm_device * dev,struct psb_framebuffer * fb,struct drm_mode_fb_cmd2 * mode_cmd,struct gtt_range * gt)242 static int psb_framebuffer_init(struct drm_device *dev,
243 struct psb_framebuffer *fb,
244 struct drm_mode_fb_cmd2 *mode_cmd,
245 struct gtt_range *gt)
246 {
247 u32 bpp, depth;
248 int ret;
249
250 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
251
252 if (mode_cmd->pitches[0] & 63)
253 return -EINVAL;
254 switch (bpp) {
255 case 8:
256 case 16:
257 case 24:
258 case 32:
259 break;
260 default:
261 return -EINVAL;
262 }
263 drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
264 fb->gtt = gt;
265 ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
266 if (ret) {
267 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
268 return ret;
269 }
270 return 0;
271 }
272
273 /**
274 * psb_framebuffer_create - create a framebuffer backed by gt
275 * @dev: our DRM device
276 * @mode_cmd: the description of the requested mode
277 * @gt: the backing object
278 *
279 * Create a framebuffer object backed by the gt, and fill in the
280 * boilerplate required
281 *
282 * TODO: review object references
283 */
284
psb_framebuffer_create(struct drm_device * dev,struct drm_mode_fb_cmd2 * mode_cmd,struct gtt_range * gt)285 static struct drm_framebuffer *psb_framebuffer_create
286 (struct drm_device *dev,
287 struct drm_mode_fb_cmd2 *mode_cmd,
288 struct gtt_range *gt)
289 {
290 struct psb_framebuffer *fb;
291 int ret;
292
293 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
294 if (!fb)
295 return ERR_PTR(-ENOMEM);
296
297 ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
298 if (ret) {
299 kfree(fb);
300 return ERR_PTR(ret);
301 }
302 return &fb->base;
303 }
304
305 /**
306 * psbfb_alloc - allocate frame buffer memory
307 * @dev: the DRM device
308 * @aligned_size: space needed
309 * @force: fall back to GEM buffers if need be
310 *
311 * Allocate the frame buffer. In the usual case we get a GTT range that
312 * is stolen memory backed and life is simple. If there isn't sufficient
313 * we fail as we don't have the virtual mapping space to really vmap it
314 * and the kernel console code can't handle non linear framebuffers.
315 *
316 * Re-address this as and if the framebuffer layer grows this ability.
317 */
psbfb_alloc(struct drm_device * dev,int aligned_size)318 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
319 {
320 struct gtt_range *backing;
321 /* Begin by trying to use stolen memory backing */
322 backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
323 if (backing) {
324 if (drm_gem_private_object_init(dev,
325 &backing->gem, aligned_size) == 0)
326 return backing;
327 psb_gtt_free_range(dev, 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 */
psbfb_create(struct psb_fbdev * fbdev,struct drm_fb_helper_surface_size * sizes)339 static 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 struct device *device = &dev->pdev->dev;
349 int size;
350 int ret;
351 struct gtt_range *backing;
352 u32 bpp, depth;
353 int gtt_roll = 0;
354 int pitch_lines = 0;
355
356 mode_cmd.width = sizes->surface_width;
357 mode_cmd.height = sizes->surface_height;
358 bpp = sizes->surface_bpp;
359 depth = sizes->surface_depth;
360
361 /* No 24bit packed */
362 if (bpp == 24)
363 bpp = 32;
364
365 do {
366 /*
367 * Acceleration via the GTT requires pitch to be
368 * power of two aligned. Preferably page but less
369 * is ok with some fonts
370 */
371 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines);
372
373 size = mode_cmd.pitches[0] * mode_cmd.height;
374 size = ALIGN(size, PAGE_SIZE);
375
376 /* Allocate the fb in the GTT with stolen page backing */
377 backing = psbfb_alloc(dev, size);
378
379 if (pitch_lines)
380 pitch_lines *= 2;
381 else
382 pitch_lines = 1;
383 gtt_roll++;
384 } while (backing == NULL && pitch_lines <= 16);
385
386 /* The final pitch we accepted if we succeeded */
387 pitch_lines /= 2;
388
389 if (backing == NULL) {
390 /*
391 * We couldn't get the space we wanted, fall back to the
392 * display engine requirement instead. The HW requires
393 * the pitch to be 64 byte aligned
394 */
395
396 gtt_roll = 0; /* Don't use GTT accelerated scrolling */
397 pitch_lines = 64;
398
399 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64);
400
401 size = mode_cmd.pitches[0] * mode_cmd.height;
402 size = ALIGN(size, PAGE_SIZE);
403
404 /* Allocate the framebuffer in the GTT with stolen page backing */
405 backing = psbfb_alloc(dev, size);
406 if (backing == NULL)
407 return -ENOMEM;
408 }
409
410 memset(dev_priv->vram_addr + backing->offset, 0, size);
411
412 mutex_lock(&dev->struct_mutex);
413
414 info = framebuffer_alloc(0, device);
415 if (!info) {
416 ret = -ENOMEM;
417 goto out_err1;
418 }
419 info->par = fbdev;
420
421 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
422
423 ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
424 if (ret)
425 goto out_unref;
426
427 fb = &psbfb->base;
428 psbfb->fbdev = info;
429
430 fbdev->psb_fb_helper.fb = fb;
431 fbdev->psb_fb_helper.fbdev = info;
432
433 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
434 strcpy(info->fix.id, "psbdrmfb");
435
436 info->flags = FBINFO_DEFAULT;
437 if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */
438 info->fbops = &psbfb_ops;
439 else if (gtt_roll) { /* GTT rolling seems best */
440 info->fbops = &psbfb_roll_ops;
441 info->flags |= FBINFO_HWACCEL_YPAN;
442 } else /* Software */
443 info->fbops = &psbfb_unaccel_ops;
444
445 ret = fb_alloc_cmap(&info->cmap, 256, 0);
446 if (ret) {
447 ret = -ENOMEM;
448 goto out_unref;
449 }
450
451 info->fix.smem_start = dev->mode_config.fb_base;
452 info->fix.smem_len = size;
453 info->fix.ywrapstep = gtt_roll;
454 info->fix.ypanstep = 0;
455
456 /* Accessed stolen memory directly */
457 info->screen_base = dev_priv->vram_addr + backing->offset;
458 info->screen_size = size;
459
460 if (dev_priv->gtt.stolen_size) {
461 info->apertures = alloc_apertures(1);
462 if (!info->apertures) {
463 ret = -ENOMEM;
464 goto out_unref;
465 }
466 info->apertures->ranges[0].base = dev->mode_config.fb_base;
467 info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
468 }
469
470 drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
471 sizes->fb_width, sizes->fb_height);
472
473 info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
474 info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
475
476 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
477
478 dev_dbg(dev->dev, "allocated %dx%d fb\n",
479 psbfb->base.width, psbfb->base.height);
480
481 mutex_unlock(&dev->struct_mutex);
482 return 0;
483 out_unref:
484 if (backing->stolen)
485 psb_gtt_free_range(dev, backing);
486 else
487 drm_gem_object_unreference(&backing->gem);
488 out_err1:
489 mutex_unlock(&dev->struct_mutex);
490 psb_gtt_free_range(dev, backing);
491 return ret;
492 }
493
494 /**
495 * psb_user_framebuffer_create - create framebuffer
496 * @dev: our DRM device
497 * @filp: client file
498 * @cmd: mode request
499 *
500 * Create a new framebuffer backed by a userspace GEM object
501 */
psb_user_framebuffer_create(struct drm_device * dev,struct drm_file * filp,struct drm_mode_fb_cmd2 * cmd)502 static struct drm_framebuffer *psb_user_framebuffer_create
503 (struct drm_device *dev, struct drm_file *filp,
504 struct drm_mode_fb_cmd2 *cmd)
505 {
506 struct gtt_range *r;
507 struct drm_gem_object *obj;
508
509 /*
510 * Find the GEM object and thus the gtt range object that is
511 * to back this space
512 */
513 obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]);
514 if (obj == NULL)
515 return ERR_PTR(-ENOENT);
516
517 /* Let the core code do all the work */
518 r = container_of(obj, struct gtt_range, gem);
519 return psb_framebuffer_create(dev, cmd, r);
520 }
521
psbfb_gamma_set(struct drm_crtc * crtc,u16 red,u16 green,u16 blue,int regno)522 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
523 u16 blue, int regno)
524 {
525 struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc);
526
527 intel_crtc->lut_r[regno] = red >> 8;
528 intel_crtc->lut_g[regno] = green >> 8;
529 intel_crtc->lut_b[regno] = blue >> 8;
530 }
531
psbfb_gamma_get(struct drm_crtc * crtc,u16 * red,u16 * green,u16 * blue,int regno)532 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
533 u16 *green, u16 *blue, int regno)
534 {
535 struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc);
536
537 *red = intel_crtc->lut_r[regno] << 8;
538 *green = intel_crtc->lut_g[regno] << 8;
539 *blue = intel_crtc->lut_b[regno] << 8;
540 }
541
psbfb_probe(struct drm_fb_helper * helper,struct drm_fb_helper_surface_size * sizes)542 static int psbfb_probe(struct drm_fb_helper *helper,
543 struct drm_fb_helper_surface_size *sizes)
544 {
545 struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
546 struct drm_device *dev = psb_fbdev->psb_fb_helper.dev;
547 struct drm_psb_private *dev_priv = dev->dev_private;
548 int bytespp;
549
550 bytespp = sizes->surface_bpp / 8;
551 if (bytespp == 3) /* no 24bit packed */
552 bytespp = 4;
553
554 /* If the mode will not fit in 32bit then switch to 16bit to get
555 a console on full resolution. The X mode setting server will
556 allocate its own 32bit GEM framebuffer */
557 if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height >
558 dev_priv->vram_stolen_size) {
559 sizes->surface_bpp = 16;
560 sizes->surface_depth = 16;
561 }
562
563 return psbfb_create(psb_fbdev, sizes);
564 }
565
566 static struct drm_fb_helper_funcs psb_fb_helper_funcs = {
567 .gamma_set = psbfb_gamma_set,
568 .gamma_get = psbfb_gamma_get,
569 .fb_probe = psbfb_probe,
570 };
571
psb_fbdev_destroy(struct drm_device * dev,struct psb_fbdev * fbdev)572 static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
573 {
574 struct fb_info *info;
575 struct psb_framebuffer *psbfb = &fbdev->pfb;
576
577 if (fbdev->psb_fb_helper.fbdev) {
578 info = fbdev->psb_fb_helper.fbdev;
579 unregister_framebuffer(info);
580 if (info->cmap.len)
581 fb_dealloc_cmap(&info->cmap);
582 framebuffer_release(info);
583 }
584 drm_fb_helper_fini(&fbdev->psb_fb_helper);
585 drm_framebuffer_unregister_private(&psbfb->base);
586 drm_framebuffer_cleanup(&psbfb->base);
587
588 if (psbfb->gtt)
589 drm_gem_object_unreference(&psbfb->gtt->gem);
590 return 0;
591 }
592
psb_fbdev_init(struct drm_device * dev)593 int psb_fbdev_init(struct drm_device *dev)
594 {
595 struct psb_fbdev *fbdev;
596 struct drm_psb_private *dev_priv = dev->dev_private;
597
598 fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
599 if (!fbdev) {
600 dev_err(dev->dev, "no memory\n");
601 return -ENOMEM;
602 }
603
604 dev_priv->fbdev = fbdev;
605 fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
606
607 drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs,
608 INTELFB_CONN_LIMIT);
609
610 drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
611
612 /* disable all the possible outputs/crtcs before entering KMS mode */
613 drm_helper_disable_unused_functions(dev);
614
615 drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
616 return 0;
617 }
618
psb_fbdev_fini(struct drm_device * dev)619 static void psb_fbdev_fini(struct drm_device *dev)
620 {
621 struct drm_psb_private *dev_priv = dev->dev_private;
622
623 if (!dev_priv->fbdev)
624 return;
625
626 psb_fbdev_destroy(dev, dev_priv->fbdev);
627 kfree(dev_priv->fbdev);
628 dev_priv->fbdev = NULL;
629 }
630
psbfb_output_poll_changed(struct drm_device * dev)631 static void psbfb_output_poll_changed(struct drm_device *dev)
632 {
633 struct drm_psb_private *dev_priv = dev->dev_private;
634 struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
635 drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
636 }
637
638 /**
639 * psb_user_framebuffer_create_handle - add hamdle to a framebuffer
640 * @fb: framebuffer
641 * @file_priv: our DRM file
642 * @handle: returned handle
643 *
644 * Our framebuffer object is a GTT range which also contains a GEM
645 * object. We need to turn it into a handle for userspace. GEM will do
646 * the work for us
647 */
psb_user_framebuffer_create_handle(struct drm_framebuffer * fb,struct drm_file * file_priv,unsigned int * handle)648 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
649 struct drm_file *file_priv,
650 unsigned int *handle)
651 {
652 struct psb_framebuffer *psbfb = to_psb_fb(fb);
653 struct gtt_range *r = psbfb->gtt;
654 return drm_gem_handle_create(file_priv, &r->gem, handle);
655 }
656
657 /**
658 * psb_user_framebuffer_destroy - destruct user created fb
659 * @fb: framebuffer
660 *
661 * User framebuffers are backed by GEM objects so all we have to do is
662 * clean up a bit and drop the reference, GEM will handle the fallout
663 */
psb_user_framebuffer_destroy(struct drm_framebuffer * fb)664 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
665 {
666 struct psb_framebuffer *psbfb = to_psb_fb(fb);
667 struct gtt_range *r = psbfb->gtt;
668
669 /* Let DRM do its clean up */
670 drm_framebuffer_cleanup(fb);
671 /* We are no longer using the resource in GEM */
672 drm_gem_object_unreference_unlocked(&r->gem);
673 kfree(fb);
674 }
675
676 static const struct drm_mode_config_funcs psb_mode_funcs = {
677 .fb_create = psb_user_framebuffer_create,
678 .output_poll_changed = psbfb_output_poll_changed,
679 };
680
psb_create_backlight_property(struct drm_device * dev)681 static int psb_create_backlight_property(struct drm_device *dev)
682 {
683 struct drm_psb_private *dev_priv = dev->dev_private;
684 struct drm_property *backlight;
685
686 if (dev_priv->backlight_property)
687 return 0;
688
689 backlight = drm_property_create_range(dev, 0, "backlight", 0, 100);
690
691 dev_priv->backlight_property = backlight;
692
693 return 0;
694 }
695
psb_setup_outputs(struct drm_device * dev)696 static void psb_setup_outputs(struct drm_device *dev)
697 {
698 struct drm_psb_private *dev_priv = dev->dev_private;
699 struct drm_connector *connector;
700
701 drm_mode_create_scaling_mode_property(dev);
702 psb_create_backlight_property(dev);
703
704 dev_priv->ops->output_init(dev);
705
706 list_for_each_entry(connector, &dev->mode_config.connector_list,
707 head) {
708 struct psb_intel_encoder *psb_intel_encoder =
709 psb_intel_attached_encoder(connector);
710 struct drm_encoder *encoder = &psb_intel_encoder->base;
711 int crtc_mask = 0, clone_mask = 0;
712
713 /* valid crtcs */
714 switch (psb_intel_encoder->type) {
715 case INTEL_OUTPUT_ANALOG:
716 crtc_mask = (1 << 0);
717 clone_mask = (1 << INTEL_OUTPUT_ANALOG);
718 break;
719 case INTEL_OUTPUT_SDVO:
720 crtc_mask = ((1 << 0) | (1 << 1));
721 clone_mask = (1 << INTEL_OUTPUT_SDVO);
722 break;
723 case INTEL_OUTPUT_LVDS:
724 crtc_mask = dev_priv->ops->lvds_mask;
725 clone_mask = (1 << INTEL_OUTPUT_LVDS);
726 break;
727 case INTEL_OUTPUT_MIPI:
728 crtc_mask = (1 << 0);
729 clone_mask = (1 << INTEL_OUTPUT_MIPI);
730 break;
731 case INTEL_OUTPUT_MIPI2:
732 crtc_mask = (1 << 2);
733 clone_mask = (1 << INTEL_OUTPUT_MIPI2);
734 break;
735 case INTEL_OUTPUT_HDMI:
736 crtc_mask = dev_priv->ops->hdmi_mask;
737 clone_mask = (1 << INTEL_OUTPUT_HDMI);
738 break;
739 case INTEL_OUTPUT_DISPLAYPORT:
740 crtc_mask = (1 << 0) | (1 << 1);
741 clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT);
742 break;
743 case INTEL_OUTPUT_EDP:
744 crtc_mask = (1 << 1);
745 clone_mask = (1 << INTEL_OUTPUT_EDP);
746 }
747 encoder->possible_crtcs = crtc_mask;
748 encoder->possible_clones =
749 psb_intel_connector_clones(dev, clone_mask);
750 }
751 }
752
psb_modeset_init(struct drm_device * dev)753 void psb_modeset_init(struct drm_device *dev)
754 {
755 struct drm_psb_private *dev_priv = dev->dev_private;
756 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
757 int i;
758
759 drm_mode_config_init(dev);
760
761 dev->mode_config.min_width = 0;
762 dev->mode_config.min_height = 0;
763
764 dev->mode_config.funcs = &psb_mode_funcs;
765
766 /* set memory base */
767 /* Oaktrail and Poulsbo should use BAR 2*/
768 pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
769 &(dev->mode_config.fb_base));
770
771 /* num pipes is 2 for PSB but 1 for Mrst */
772 for (i = 0; i < dev_priv->num_pipe; i++)
773 psb_intel_crtc_init(dev, i, mode_dev);
774
775 dev->mode_config.max_width = 4096;
776 dev->mode_config.max_height = 4096;
777
778 psb_setup_outputs(dev);
779
780 if (dev_priv->ops->errata)
781 dev_priv->ops->errata(dev);
782
783 dev_priv->modeset = true;
784 }
785
psb_modeset_cleanup(struct drm_device * dev)786 void psb_modeset_cleanup(struct drm_device *dev)
787 {
788 struct drm_psb_private *dev_priv = dev->dev_private;
789 if (dev_priv->modeset) {
790 mutex_lock(&dev->struct_mutex);
791
792 drm_kms_helper_poll_fini(dev);
793 psb_fbdev_fini(dev);
794 drm_mode_config_cleanup(dev);
795
796 mutex_unlock(&dev->struct_mutex);
797 }
798 }
799