2 * Copyright © 2007 David Airlie
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
27 #include <linux/async.h>
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/console.h>
31 #include <linux/errno.h>
32 #include <linux/string.h>
34 #include <linux/tty.h>
35 #include <linux/sysrq.h>
36 #include <linux/delay.h>
37 #include <linux/init.h>
38 #include <linux/vga_switcheroo.h>
41 #include <drm/drm_crtc.h>
42 #include <drm/drm_fb_helper.h>
43 #include "intel_drv.h"
44 #include "intel_frontbuffer.h"
45 #include <drm/i915_drm.h>
48 static void intel_fbdev_invalidate(struct intel_fbdev
*ifbdev
)
50 struct drm_i915_gem_object
*obj
= ifbdev
->fb
->obj
;
51 unsigned int origin
= ifbdev
->vma
->fence
? ORIGIN_GTT
: ORIGIN_CPU
;
53 intel_fb_obj_invalidate(obj
, origin
);
56 static int intel_fbdev_set_par(struct fb_info
*info
)
58 struct drm_fb_helper
*fb_helper
= info
->par
;
59 struct intel_fbdev
*ifbdev
=
60 container_of(fb_helper
, struct intel_fbdev
, helper
);
63 ret
= drm_fb_helper_set_par(info
);
65 intel_fbdev_invalidate(ifbdev
);
70 static int intel_fbdev_blank(int blank
, struct fb_info
*info
)
72 struct drm_fb_helper
*fb_helper
= info
->par
;
73 struct intel_fbdev
*ifbdev
=
74 container_of(fb_helper
, struct intel_fbdev
, helper
);
77 ret
= drm_fb_helper_blank(blank
, info
);
79 intel_fbdev_invalidate(ifbdev
);
84 static int intel_fbdev_pan_display(struct fb_var_screeninfo
*var
,
87 struct drm_fb_helper
*fb_helper
= info
->par
;
88 struct intel_fbdev
*ifbdev
=
89 container_of(fb_helper
, struct intel_fbdev
, helper
);
92 ret
= drm_fb_helper_pan_display(var
, info
);
94 intel_fbdev_invalidate(ifbdev
);
99 static struct fb_ops intelfb_ops
= {
100 .owner
= THIS_MODULE
,
101 DRM_FB_HELPER_DEFAULT_OPS
,
102 .fb_set_par
= intel_fbdev_set_par
,
103 .fb_fillrect
= drm_fb_helper_cfb_fillrect
,
104 .fb_copyarea
= drm_fb_helper_cfb_copyarea
,
105 .fb_imageblit
= drm_fb_helper_cfb_imageblit
,
106 .fb_pan_display
= intel_fbdev_pan_display
,
107 .fb_blank
= intel_fbdev_blank
,
110 static int intelfb_alloc(struct drm_fb_helper
*helper
,
111 struct drm_fb_helper_surface_size
*sizes
)
113 struct intel_fbdev
*ifbdev
=
114 container_of(helper
, struct intel_fbdev
, helper
);
115 struct drm_framebuffer
*fb
;
116 struct drm_device
*dev
= helper
->dev
;
117 struct drm_i915_private
*dev_priv
= to_i915(dev
);
118 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
119 struct drm_mode_fb_cmd2 mode_cmd
= {};
120 struct drm_i915_gem_object
*obj
;
123 /* we don't do packed 24bpp */
124 if (sizes
->surface_bpp
== 24)
125 sizes
->surface_bpp
= 32;
127 mode_cmd
.width
= sizes
->surface_width
;
128 mode_cmd
.height
= sizes
->surface_height
;
130 mode_cmd
.pitches
[0] = ALIGN(mode_cmd
.width
*
131 DIV_ROUND_UP(sizes
->surface_bpp
, 8), 64);
132 mode_cmd
.pixel_format
= drm_mode_legacy_fb_format(sizes
->surface_bpp
,
133 sizes
->surface_depth
);
135 size
= mode_cmd
.pitches
[0] * mode_cmd
.height
;
136 size
= PAGE_ALIGN(size
);
138 /* If the FB is too big, just don't use it since fbdev is not very
139 * important and we should probably use that space with FBC or other
142 if (size
* 2 < ggtt
->stolen_usable_size
)
143 obj
= i915_gem_object_create_stolen(dev_priv
, size
);
145 obj
= i915_gem_object_create(dev_priv
, size
);
147 DRM_ERROR("failed to allocate framebuffer\n");
152 fb
= intel_framebuffer_create(obj
, &mode_cmd
);
158 ifbdev
->fb
= to_intel_framebuffer(fb
);
163 i915_gem_object_put(obj
);
168 static int intelfb_create(struct drm_fb_helper
*helper
,
169 struct drm_fb_helper_surface_size
*sizes
)
171 struct intel_fbdev
*ifbdev
=
172 container_of(helper
, struct intel_fbdev
, helper
);
173 struct intel_framebuffer
*intel_fb
= ifbdev
->fb
;
174 struct drm_device
*dev
= helper
->dev
;
175 struct drm_i915_private
*dev_priv
= to_i915(dev
);
176 struct pci_dev
*pdev
= dev_priv
->drm
.pdev
;
177 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
178 struct fb_info
*info
;
179 struct drm_framebuffer
*fb
;
180 struct i915_vma
*vma
;
181 bool prealloc
= false;
186 (sizes
->fb_width
> intel_fb
->base
.width
||
187 sizes
->fb_height
> intel_fb
->base
.height
)) {
188 DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
190 intel_fb
->base
.width
, intel_fb
->base
.height
,
191 sizes
->fb_width
, sizes
->fb_height
);
192 drm_framebuffer_put(&intel_fb
->base
);
193 intel_fb
= ifbdev
->fb
= NULL
;
195 if (!intel_fb
|| WARN_ON(!intel_fb
->obj
)) {
196 DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
197 ret
= intelfb_alloc(helper
, sizes
);
200 intel_fb
= ifbdev
->fb
;
202 DRM_DEBUG_KMS("re-using BIOS fb\n");
204 sizes
->fb_width
= intel_fb
->base
.width
;
205 sizes
->fb_height
= intel_fb
->base
.height
;
208 mutex_lock(&dev
->struct_mutex
);
209 intel_runtime_pm_get(dev_priv
);
211 /* Pin the GGTT vma for our access via info->screen_base.
212 * This also validates that any existing fb inherited from the
213 * BIOS is suitable for own access.
215 vma
= intel_pin_and_fence_fb_obj(&ifbdev
->fb
->base
, DRM_MODE_ROTATE_0
);
221 info
= drm_fb_helper_alloc_fbi(helper
);
223 DRM_ERROR("Failed to allocate fb_info\n");
230 fb
= &ifbdev
->fb
->base
;
232 ifbdev
->helper
.fb
= fb
;
234 strcpy(info
->fix
.id
, "inteldrmfb");
236 info
->fbops
= &intelfb_ops
;
238 /* setup aperture base/size for vesafb takeover */
239 info
->apertures
->ranges
[0].base
= dev
->mode_config
.fb_base
;
240 info
->apertures
->ranges
[0].size
= ggtt
->mappable_end
;
242 info
->fix
.smem_start
= dev
->mode_config
.fb_base
+ i915_ggtt_offset(vma
);
243 info
->fix
.smem_len
= vma
->node
.size
;
245 vaddr
= i915_vma_pin_iomap(vma
);
247 DRM_ERROR("Failed to remap framebuffer into virtual memory\n");
248 ret
= PTR_ERR(vaddr
);
251 info
->screen_base
= vaddr
;
252 info
->screen_size
= vma
->node
.size
;
254 /* This driver doesn't need a VT switch to restore the mode on resume */
255 info
->skip_vt_switch
= true;
257 drm_fb_helper_fill_fix(info
, fb
->pitches
[0], fb
->format
->depth
);
258 drm_fb_helper_fill_var(info
, &ifbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
260 /* If the object is shmemfs backed, it will have given us zeroed pages.
261 * If the object is stolen however, it will be full of whatever
262 * garbage was left in there.
264 if (intel_fb
->obj
->stolen
&& !prealloc
)
265 memset_io(info
->screen_base
, 0, info
->screen_size
);
267 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
269 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n",
270 fb
->width
, fb
->height
, i915_ggtt_offset(vma
));
273 intel_runtime_pm_put(dev_priv
);
274 mutex_unlock(&dev
->struct_mutex
);
275 vga_switcheroo_client_fb_set(pdev
, info
);
279 intel_unpin_fb_vma(vma
);
281 intel_runtime_pm_put(dev_priv
);
282 mutex_unlock(&dev
->struct_mutex
);
286 static struct drm_fb_helper_crtc
*
287 intel_fb_helper_crtc(struct drm_fb_helper
*fb_helper
, struct drm_crtc
*crtc
)
291 for (i
= 0; i
< fb_helper
->crtc_count
; i
++)
292 if (fb_helper
->crtc_info
[i
].mode_set
.crtc
== crtc
)
293 return &fb_helper
->crtc_info
[i
];
299 * Try to read the BIOS display configuration and use it for the initial
302 * The BIOS or boot loader will generally create an initial display
303 * configuration for us that includes some set of active pipes and displays.
304 * This routine tries to figure out which pipes and connectors are active
305 * and stuffs them into the crtcs and modes array given to us by the
306 * drm_fb_helper code.
308 * The overall sequence is:
309 * intel_fbdev_init - from driver load
310 * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
311 * drm_fb_helper_init - build fb helper structs
312 * drm_fb_helper_single_add_all_connectors - more fb helper structs
313 * intel_fbdev_initial_config - apply the config
314 * drm_fb_helper_initial_config - call ->probe then register_framebuffer()
315 * drm_setup_crtcs - build crtc config for fbdev
316 * intel_fb_initial_config - find active connectors etc
317 * drm_fb_helper_single_fb_probe - set up fbdev
318 * intelfb_create - re-use or alloc fb, build out fbdev structs
320 * Note that we don't make special consideration whether we could actually
321 * switch to the selected modes without a full modeset. E.g. when the display
322 * is in VGA mode we need to recalculate watermarks and set a new high-res
323 * framebuffer anyway.
325 static bool intel_fb_initial_config(struct drm_fb_helper
*fb_helper
,
326 struct drm_fb_helper_crtc
**crtcs
,
327 struct drm_display_mode
**modes
,
328 struct drm_fb_offset
*offsets
,
329 bool *enabled
, int width
, int height
)
331 struct drm_i915_private
*dev_priv
= to_i915(fb_helper
->dev
);
332 unsigned long conn_configured
, conn_seq
, mask
;
333 unsigned int count
= min(fb_helper
->connector_count
, BITS_PER_LONG
);
336 bool fallback
= true, ret
= true;
337 int num_connectors_enabled
= 0;
338 int num_connectors_detected
= 0;
339 struct drm_modeset_acquire_ctx ctx
;
341 save_enabled
= kcalloc(count
, sizeof(bool), GFP_KERNEL
);
345 drm_modeset_acquire_init(&ctx
, 0);
347 while (drm_modeset_lock_all_ctx(fb_helper
->dev
, &ctx
) != 0)
348 drm_modeset_backoff(&ctx
);
350 memcpy(save_enabled
, enabled
, count
);
351 mask
= GENMASK(count
- 1, 0);
354 conn_seq
= conn_configured
;
355 for (i
= 0; i
< count
; i
++) {
356 struct drm_fb_helper_connector
*fb_conn
;
357 struct drm_connector
*connector
;
358 struct drm_encoder
*encoder
;
359 struct drm_fb_helper_crtc
*new_crtc
;
361 fb_conn
= fb_helper
->connector_info
[i
];
362 connector
= fb_conn
->connector
;
364 if (conn_configured
& BIT(i
))
367 if (conn_seq
== 0 && !connector
->has_tile
)
370 if (connector
->status
== connector_status_connected
)
371 num_connectors_detected
++;
374 DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
376 conn_configured
|= BIT(i
);
380 if (connector
->force
== DRM_FORCE_OFF
) {
381 DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
387 encoder
= connector
->state
->best_encoder
;
388 if (!encoder
|| WARN_ON(!connector
->state
->crtc
)) {
389 if (connector
->force
> DRM_FORCE_OFF
)
392 DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
395 conn_configured
|= BIT(i
);
399 num_connectors_enabled
++;
401 new_crtc
= intel_fb_helper_crtc(fb_helper
,
402 connector
->state
->crtc
);
405 * Make sure we're not trying to drive multiple connectors
406 * with a single CRTC, since our cloning support may not
409 for (j
= 0; j
< count
; j
++) {
410 if (crtcs
[j
] == new_crtc
) {
411 DRM_DEBUG_KMS("fallback: cloned configuration\n");
416 DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
419 /* go for command line mode first */
420 modes
[i
] = drm_pick_cmdline_mode(fb_conn
);
422 /* try for preferred next */
424 DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
425 connector
->name
, connector
->has_tile
);
426 modes
[i
] = drm_has_preferred_mode(fb_conn
, width
,
430 /* No preferred mode marked by the EDID? Are there any modes? */
431 if (!modes
[i
] && !list_empty(&connector
->modes
)) {
432 DRM_DEBUG_KMS("using first mode listed on connector %s\n",
434 modes
[i
] = list_first_entry(&connector
->modes
,
435 struct drm_display_mode
,
439 /* last resort: use current mode */
442 * IMPORTANT: We want to use the adjusted mode (i.e.
443 * after the panel fitter upscaling) as the initial
444 * config, not the input mode, which is what crtc->mode
445 * usually contains. But since our current
446 * code puts a mode derived from the post-pfit timings
447 * into crtc->mode this works out correctly.
449 * This is crtc->mode and not crtc->state->mode for the
450 * fastboot check to work correctly. crtc_state->mode has
451 * I915_MODE_FLAG_INHERITED, which we clear to force check
454 DRM_DEBUG_KMS("looking for current mode on connector %s\n",
456 modes
[i
] = &connector
->state
->crtc
->mode
;
460 DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
462 connector
->state
->crtc
->base
.id
,
463 connector
->state
->crtc
->name
,
464 modes
[i
]->hdisplay
, modes
[i
]->vdisplay
,
465 modes
[i
]->flags
& DRM_MODE_FLAG_INTERLACE
? "i" :"");
468 conn_configured
|= BIT(i
);
471 if ((conn_configured
& mask
) != mask
&& conn_configured
!= conn_seq
)
475 * If the BIOS didn't enable everything it could, fall back to have the
476 * same user experiencing of lighting up as much as possible like the
477 * fbdev helper library.
479 if (num_connectors_enabled
!= num_connectors_detected
&&
480 num_connectors_enabled
< INTEL_INFO(dev_priv
)->num_pipes
) {
481 DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
482 DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled
,
483 num_connectors_detected
);
489 DRM_DEBUG_KMS("Not using firmware configuration\n");
490 memcpy(enabled
, save_enabled
, count
);
494 drm_modeset_drop_locks(&ctx
);
495 drm_modeset_acquire_fini(&ctx
);
501 static const struct drm_fb_helper_funcs intel_fb_helper_funcs
= {
502 .initial_config
= intel_fb_initial_config
,
503 .fb_probe
= intelfb_create
,
506 static void intel_fbdev_destroy(struct intel_fbdev
*ifbdev
)
508 /* We rely on the object-free to release the VMA pinning for
509 * the info->screen_base mmaping. Leaking the VMA is simpler than
510 * trying to rectify all the possible error paths leading here.
513 drm_fb_helper_fini(&ifbdev
->helper
);
516 mutex_lock(&ifbdev
->helper
.dev
->struct_mutex
);
517 intel_unpin_fb_vma(ifbdev
->vma
);
518 mutex_unlock(&ifbdev
->helper
.dev
->struct_mutex
);
522 drm_framebuffer_remove(&ifbdev
->fb
->base
);
528 * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
529 * The core display code will have read out the current plane configuration,
530 * so we use that to figure out if there's an object for us to use as the
531 * fb, and if so, we re-use it for the fbdev configuration.
533 * Note we only support a single fb shared across pipes for boot (mostly for
534 * fbcon), so we just find the biggest and use that.
536 static bool intel_fbdev_init_bios(struct drm_device
*dev
,
537 struct intel_fbdev
*ifbdev
)
539 struct intel_framebuffer
*fb
= NULL
;
540 struct drm_crtc
*crtc
;
541 struct intel_crtc
*intel_crtc
;
542 unsigned int max_size
= 0;
544 /* Find the largest fb */
545 for_each_crtc(dev
, crtc
) {
546 struct drm_i915_gem_object
*obj
=
547 intel_fb_obj(crtc
->primary
->state
->fb
);
548 intel_crtc
= to_intel_crtc(crtc
);
550 if (!crtc
->state
->active
|| !obj
) {
551 DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
552 pipe_name(intel_crtc
->pipe
));
556 if (obj
->base
.size
> max_size
) {
557 DRM_DEBUG_KMS("found possible fb from plane %c\n",
558 pipe_name(intel_crtc
->pipe
));
559 fb
= to_intel_framebuffer(crtc
->primary
->state
->fb
);
560 max_size
= obj
->base
.size
;
565 DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
569 /* Now make sure all the pipes will fit into it */
570 for_each_crtc(dev
, crtc
) {
571 unsigned int cur_size
;
573 intel_crtc
= to_intel_crtc(crtc
);
575 if (!crtc
->state
->active
) {
576 DRM_DEBUG_KMS("pipe %c not active, skipping\n",
577 pipe_name(intel_crtc
->pipe
));
581 DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
582 pipe_name(intel_crtc
->pipe
));
585 * See if the plane fb we found above will fit on this
586 * pipe. Note we need to use the selected fb's pitch and bpp
587 * rather than the current pipe's, since they differ.
589 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
;
590 cur_size
= cur_size
* fb
->base
.format
->cpp
[0];
591 if (fb
->base
.pitches
[0] < cur_size
) {
592 DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n",
593 pipe_name(intel_crtc
->pipe
),
594 cur_size
, fb
->base
.pitches
[0]);
599 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
;
600 cur_size
= intel_fb_align_height(&fb
->base
, 0, cur_size
);
601 cur_size
*= fb
->base
.pitches
[0];
602 DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
603 pipe_name(intel_crtc
->pipe
),
604 intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
,
605 intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
,
606 fb
->base
.format
->cpp
[0] * 8,
609 if (cur_size
> max_size
) {
610 DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
611 pipe_name(intel_crtc
->pipe
),
617 DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
618 pipe_name(intel_crtc
->pipe
),
623 DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
627 ifbdev
->preferred_bpp
= fb
->base
.format
->cpp
[0] * 8;
630 drm_framebuffer_get(&ifbdev
->fb
->base
);
632 /* Final pass to check if any active pipes don't have fbs */
633 for_each_crtc(dev
, crtc
) {
634 intel_crtc
= to_intel_crtc(crtc
);
636 if (!crtc
->state
->active
)
639 WARN(!crtc
->primary
->fb
,
640 "re-used BIOS config but lost an fb on crtc %d\n",
645 DRM_DEBUG_KMS("using BIOS fb for initial console\n");
653 static void intel_fbdev_suspend_worker(struct work_struct
*work
)
655 intel_fbdev_set_suspend(&container_of(work
,
656 struct drm_i915_private
,
657 fbdev_suspend_work
)->drm
,
658 FBINFO_STATE_RUNNING
,
662 int intel_fbdev_init(struct drm_device
*dev
)
664 struct drm_i915_private
*dev_priv
= to_i915(dev
);
665 struct intel_fbdev
*ifbdev
;
668 if (WARN_ON(INTEL_INFO(dev_priv
)->num_pipes
== 0))
671 ifbdev
= kzalloc(sizeof(struct intel_fbdev
), GFP_KERNEL
);
675 drm_fb_helper_prepare(dev
, &ifbdev
->helper
, &intel_fb_helper_funcs
);
677 if (!intel_fbdev_init_bios(dev
, ifbdev
))
678 ifbdev
->preferred_bpp
= 32;
680 ret
= drm_fb_helper_init(dev
, &ifbdev
->helper
, 4);
686 dev_priv
->fbdev
= ifbdev
;
687 INIT_WORK(&dev_priv
->fbdev_suspend_work
, intel_fbdev_suspend_worker
);
689 drm_fb_helper_single_add_all_connectors(&ifbdev
->helper
);
694 static void intel_fbdev_initial_config(void *data
, async_cookie_t cookie
)
696 struct intel_fbdev
*ifbdev
= data
;
698 /* Due to peculiar init order wrt to hpd handling this is separate. */
699 if (drm_fb_helper_initial_config(&ifbdev
->helper
,
700 ifbdev
->preferred_bpp
)) {
701 intel_fbdev_unregister(to_i915(ifbdev
->helper
.dev
));
702 intel_fbdev_fini(to_i915(ifbdev
->helper
.dev
));
706 void intel_fbdev_initial_config_async(struct drm_device
*dev
)
708 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
713 ifbdev
->cookie
= async_schedule(intel_fbdev_initial_config
, ifbdev
);
716 static void intel_fbdev_sync(struct intel_fbdev
*ifbdev
)
721 /* Only serialises with all preceding async calls, hence +1 */
722 async_synchronize_cookie(ifbdev
->cookie
+ 1);
726 void intel_fbdev_unregister(struct drm_i915_private
*dev_priv
)
728 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
733 cancel_work_sync(&dev_priv
->fbdev_suspend_work
);
734 if (!current_is_async())
735 intel_fbdev_sync(ifbdev
);
737 drm_fb_helper_unregister_fbi(&ifbdev
->helper
);
740 void intel_fbdev_fini(struct drm_i915_private
*dev_priv
)
742 struct intel_fbdev
*ifbdev
= fetch_and_zero(&dev_priv
->fbdev
);
747 intel_fbdev_destroy(ifbdev
);
750 void intel_fbdev_set_suspend(struct drm_device
*dev
, int state
, bool synchronous
)
752 struct drm_i915_private
*dev_priv
= to_i915(dev
);
753 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
754 struct fb_info
*info
;
756 if (!ifbdev
|| !ifbdev
->vma
)
759 info
= ifbdev
->helper
.fbdev
;
762 /* Flush any pending work to turn the console on, and then
763 * wait to turn it off. It must be synchronous as we are
764 * about to suspend or unload the driver.
766 * Note that from within the work-handler, we cannot flush
767 * ourselves, so only flush outstanding work upon suspend!
769 if (state
!= FBINFO_STATE_RUNNING
)
770 flush_work(&dev_priv
->fbdev_suspend_work
);
774 * The console lock can be pretty contented on resume due
775 * to all the printk activity. Try to keep it out of the hot
776 * path of resume if possible.
778 WARN_ON(state
!= FBINFO_STATE_RUNNING
);
779 if (!console_trylock()) {
780 /* Don't block our own workqueue as this can
781 * be run in parallel with other i915.ko tasks.
783 schedule_work(&dev_priv
->fbdev_suspend_work
);
788 /* On resume from hibernation: If the object is shmemfs backed, it has
789 * been restored from swap. If the object is stolen however, it will be
790 * full of whatever garbage was left in there.
792 if (state
== FBINFO_STATE_RUNNING
&& ifbdev
->fb
->obj
->stolen
)
793 memset_io(info
->screen_base
, 0, info
->screen_size
);
795 drm_fb_helper_set_suspend(&ifbdev
->helper
, state
);
799 void intel_fbdev_output_poll_changed(struct drm_device
*dev
)
801 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
804 drm_fb_helper_hotplug_event(&ifbdev
->helper
);
807 void intel_fbdev_restore_mode(struct drm_device
*dev
)
809 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
814 intel_fbdev_sync(ifbdev
);
818 if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev
->helper
) == 0)
819 intel_fbdev_invalidate(ifbdev
);