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_unreference(&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
);
210 /* Pin the GGTT vma for our access via info->screen_base.
211 * This also validates that any existing fb inherited from the
212 * BIOS is suitable for own access.
214 vma
= intel_pin_and_fence_fb_obj(&ifbdev
->fb
->base
, DRM_MODE_ROTATE_0
);
220 info
= drm_fb_helper_alloc_fbi(helper
);
222 DRM_ERROR("Failed to allocate fb_info\n");
229 fb
= &ifbdev
->fb
->base
;
231 ifbdev
->helper
.fb
= fb
;
233 strcpy(info
->fix
.id
, "inteldrmfb");
235 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
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 mutex_unlock(&dev
->struct_mutex
);
274 vga_switcheroo_client_fb_set(pdev
, info
);
278 intel_unpin_fb_vma(vma
);
280 mutex_unlock(&dev
->struct_mutex
);
284 /** Sets the color ramps on behalf of RandR */
285 static void intel_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
288 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
290 intel_crtc
->lut_r
[regno
] = red
>> 8;
291 intel_crtc
->lut_g
[regno
] = green
>> 8;
292 intel_crtc
->lut_b
[regno
] = blue
>> 8;
295 static void intel_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
296 u16
*blue
, int regno
)
298 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
300 *red
= intel_crtc
->lut_r
[regno
] << 8;
301 *green
= intel_crtc
->lut_g
[regno
] << 8;
302 *blue
= intel_crtc
->lut_b
[regno
] << 8;
305 static struct drm_fb_helper_crtc
*
306 intel_fb_helper_crtc(struct drm_fb_helper
*fb_helper
, struct drm_crtc
*crtc
)
310 for (i
= 0; i
< fb_helper
->crtc_count
; i
++)
311 if (fb_helper
->crtc_info
[i
].mode_set
.crtc
== crtc
)
312 return &fb_helper
->crtc_info
[i
];
318 * Try to read the BIOS display configuration and use it for the initial
321 * The BIOS or boot loader will generally create an initial display
322 * configuration for us that includes some set of active pipes and displays.
323 * This routine tries to figure out which pipes and connectors are active
324 * and stuffs them into the crtcs and modes array given to us by the
325 * drm_fb_helper code.
327 * The overall sequence is:
328 * intel_fbdev_init - from driver load
329 * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
330 * drm_fb_helper_init - build fb helper structs
331 * drm_fb_helper_single_add_all_connectors - more fb helper structs
332 * intel_fbdev_initial_config - apply the config
333 * drm_fb_helper_initial_config - call ->probe then register_framebuffer()
334 * drm_setup_crtcs - build crtc config for fbdev
335 * intel_fb_initial_config - find active connectors etc
336 * drm_fb_helper_single_fb_probe - set up fbdev
337 * intelfb_create - re-use or alloc fb, build out fbdev structs
339 * Note that we don't make special consideration whether we could actually
340 * switch to the selected modes without a full modeset. E.g. when the display
341 * is in VGA mode we need to recalculate watermarks and set a new high-res
342 * framebuffer anyway.
344 static bool intel_fb_initial_config(struct drm_fb_helper
*fb_helper
,
345 struct drm_fb_helper_crtc
**crtcs
,
346 struct drm_display_mode
**modes
,
347 struct drm_fb_offset
*offsets
,
348 bool *enabled
, int width
, int height
)
350 struct drm_i915_private
*dev_priv
= to_i915(fb_helper
->dev
);
351 unsigned long conn_configured
, conn_seq
, mask
;
352 unsigned int count
= min(fb_helper
->connector_count
, BITS_PER_LONG
);
355 bool fallback
= true;
356 int num_connectors_enabled
= 0;
357 int num_connectors_detected
= 0;
359 save_enabled
= kcalloc(count
, sizeof(bool), GFP_KERNEL
);
363 memcpy(save_enabled
, enabled
, count
);
364 mask
= GENMASK(count
- 1, 0);
367 conn_seq
= conn_configured
;
368 for (i
= 0; i
< count
; i
++) {
369 struct drm_fb_helper_connector
*fb_conn
;
370 struct drm_connector
*connector
;
371 struct drm_encoder
*encoder
;
372 struct drm_fb_helper_crtc
*new_crtc
;
373 struct intel_crtc
*intel_crtc
;
375 fb_conn
= fb_helper
->connector_info
[i
];
376 connector
= fb_conn
->connector
;
378 if (conn_configured
& BIT(i
))
381 if (conn_seq
== 0 && !connector
->has_tile
)
384 if (connector
->status
== connector_status_connected
)
385 num_connectors_detected
++;
388 DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
390 conn_configured
|= BIT(i
);
394 if (connector
->force
== DRM_FORCE_OFF
) {
395 DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
401 encoder
= connector
->state
->best_encoder
;
402 if (!encoder
|| WARN_ON(!connector
->state
->crtc
)) {
403 if (connector
->force
> DRM_FORCE_OFF
)
406 DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
409 conn_configured
|= BIT(i
);
413 num_connectors_enabled
++;
415 intel_crtc
= to_intel_crtc(connector
->state
->crtc
);
416 for (j
= 0; j
< 256; j
++) {
417 intel_crtc
->lut_r
[j
] = j
;
418 intel_crtc
->lut_g
[j
] = j
;
419 intel_crtc
->lut_b
[j
] = j
;
422 new_crtc
= intel_fb_helper_crtc(fb_helper
,
423 connector
->state
->crtc
);
426 * Make sure we're not trying to drive multiple connectors
427 * with a single CRTC, since our cloning support may not
430 for (j
= 0; j
< count
; j
++) {
431 if (crtcs
[j
] == new_crtc
) {
432 DRM_DEBUG_KMS("fallback: cloned configuration\n");
437 DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
440 /* go for command line mode first */
441 modes
[i
] = drm_pick_cmdline_mode(fb_conn
);
443 /* try for preferred next */
445 DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
446 connector
->name
, connector
->has_tile
);
447 modes
[i
] = drm_has_preferred_mode(fb_conn
, width
,
451 /* No preferred mode marked by the EDID? Are there any modes? */
452 if (!modes
[i
] && !list_empty(&connector
->modes
)) {
453 DRM_DEBUG_KMS("using first mode listed on connector %s\n",
455 modes
[i
] = list_first_entry(&connector
->modes
,
456 struct drm_display_mode
,
460 /* last resort: use current mode */
463 * IMPORTANT: We want to use the adjusted mode (i.e.
464 * after the panel fitter upscaling) as the initial
465 * config, not the input mode, which is what crtc->mode
466 * usually contains. But since our current
467 * code puts a mode derived from the post-pfit timings
468 * into crtc->mode this works out correctly.
470 * This is crtc->mode and not crtc->state->mode for the
471 * fastboot check to work correctly. crtc_state->mode has
472 * I915_MODE_FLAG_INHERITED, which we clear to force check
475 DRM_DEBUG_KMS("looking for current mode on connector %s\n",
477 modes
[i
] = &connector
->state
->crtc
->mode
;
481 DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
483 connector
->state
->crtc
->base
.id
,
484 connector
->state
->crtc
->name
,
485 modes
[i
]->hdisplay
, modes
[i
]->vdisplay
,
486 modes
[i
]->flags
& DRM_MODE_FLAG_INTERLACE
? "i" :"");
489 conn_configured
|= BIT(i
);
492 if ((conn_configured
& mask
) != mask
&& conn_configured
!= conn_seq
)
496 * If the BIOS didn't enable everything it could, fall back to have the
497 * same user experiencing of lighting up as much as possible like the
498 * fbdev helper library.
500 if (num_connectors_enabled
!= num_connectors_detected
&&
501 num_connectors_enabled
< INTEL_INFO(dev_priv
)->num_pipes
) {
502 DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
503 DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled
,
504 num_connectors_detected
);
510 DRM_DEBUG_KMS("Not using firmware configuration\n");
511 memcpy(enabled
, save_enabled
, count
);
520 static const struct drm_fb_helper_funcs intel_fb_helper_funcs
= {
521 .initial_config
= intel_fb_initial_config
,
522 .gamma_set
= intel_crtc_fb_gamma_set
,
523 .gamma_get
= intel_crtc_fb_gamma_get
,
524 .fb_probe
= intelfb_create
,
527 static void intel_fbdev_destroy(struct intel_fbdev
*ifbdev
)
529 /* We rely on the object-free to release the VMA pinning for
530 * the info->screen_base mmaping. Leaking the VMA is simpler than
531 * trying to rectify all the possible error paths leading here.
534 drm_fb_helper_fini(&ifbdev
->helper
);
537 mutex_lock(&ifbdev
->helper
.dev
->struct_mutex
);
538 intel_unpin_fb_vma(ifbdev
->vma
);
539 mutex_unlock(&ifbdev
->helper
.dev
->struct_mutex
);
543 drm_framebuffer_remove(&ifbdev
->fb
->base
);
549 * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
550 * The core display code will have read out the current plane configuration,
551 * so we use that to figure out if there's an object for us to use as the
552 * fb, and if so, we re-use it for the fbdev configuration.
554 * Note we only support a single fb shared across pipes for boot (mostly for
555 * fbcon), so we just find the biggest and use that.
557 static bool intel_fbdev_init_bios(struct drm_device
*dev
,
558 struct intel_fbdev
*ifbdev
)
560 struct intel_framebuffer
*fb
= NULL
;
561 struct drm_crtc
*crtc
;
562 struct intel_crtc
*intel_crtc
;
563 unsigned int max_size
= 0;
565 /* Find the largest fb */
566 for_each_crtc(dev
, crtc
) {
567 struct drm_i915_gem_object
*obj
=
568 intel_fb_obj(crtc
->primary
->state
->fb
);
569 intel_crtc
= to_intel_crtc(crtc
);
571 if (!crtc
->state
->active
|| !obj
) {
572 DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
573 pipe_name(intel_crtc
->pipe
));
577 if (obj
->base
.size
> max_size
) {
578 DRM_DEBUG_KMS("found possible fb from plane %c\n",
579 pipe_name(intel_crtc
->pipe
));
580 fb
= to_intel_framebuffer(crtc
->primary
->state
->fb
);
581 max_size
= obj
->base
.size
;
586 DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
590 /* Now make sure all the pipes will fit into it */
591 for_each_crtc(dev
, crtc
) {
592 unsigned int cur_size
;
594 intel_crtc
= to_intel_crtc(crtc
);
596 if (!crtc
->state
->active
) {
597 DRM_DEBUG_KMS("pipe %c not active, skipping\n",
598 pipe_name(intel_crtc
->pipe
));
602 DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
603 pipe_name(intel_crtc
->pipe
));
606 * See if the plane fb we found above will fit on this
607 * pipe. Note we need to use the selected fb's pitch and bpp
608 * rather than the current pipe's, since they differ.
610 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
;
611 cur_size
= cur_size
* fb
->base
.format
->cpp
[0];
612 if (fb
->base
.pitches
[0] < cur_size
) {
613 DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n",
614 pipe_name(intel_crtc
->pipe
),
615 cur_size
, fb
->base
.pitches
[0]);
620 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
;
621 cur_size
= intel_fb_align_height(&fb
->base
, 0, cur_size
);
622 cur_size
*= fb
->base
.pitches
[0];
623 DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
624 pipe_name(intel_crtc
->pipe
),
625 intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
,
626 intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
,
627 fb
->base
.format
->cpp
[0] * 8,
630 if (cur_size
> max_size
) {
631 DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
632 pipe_name(intel_crtc
->pipe
),
638 DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
639 pipe_name(intel_crtc
->pipe
),
644 DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
648 ifbdev
->preferred_bpp
= fb
->base
.format
->cpp
[0] * 8;
651 drm_framebuffer_reference(&ifbdev
->fb
->base
);
653 /* Final pass to check if any active pipes don't have fbs */
654 for_each_crtc(dev
, crtc
) {
655 intel_crtc
= to_intel_crtc(crtc
);
657 if (!crtc
->state
->active
)
660 WARN(!crtc
->primary
->fb
,
661 "re-used BIOS config but lost an fb on crtc %d\n",
666 DRM_DEBUG_KMS("using BIOS fb for initial console\n");
674 static void intel_fbdev_suspend_worker(struct work_struct
*work
)
676 intel_fbdev_set_suspend(&container_of(work
,
677 struct drm_i915_private
,
678 fbdev_suspend_work
)->drm
,
679 FBINFO_STATE_RUNNING
,
683 int intel_fbdev_init(struct drm_device
*dev
)
685 struct drm_i915_private
*dev_priv
= to_i915(dev
);
686 struct intel_fbdev
*ifbdev
;
689 if (WARN_ON(INTEL_INFO(dev_priv
)->num_pipes
== 0))
692 ifbdev
= kzalloc(sizeof(struct intel_fbdev
), GFP_KERNEL
);
696 drm_fb_helper_prepare(dev
, &ifbdev
->helper
, &intel_fb_helper_funcs
);
698 if (!intel_fbdev_init_bios(dev
, ifbdev
))
699 ifbdev
->preferred_bpp
= 32;
701 ret
= drm_fb_helper_init(dev
, &ifbdev
->helper
, 4);
707 dev_priv
->fbdev
= ifbdev
;
708 INIT_WORK(&dev_priv
->fbdev_suspend_work
, intel_fbdev_suspend_worker
);
710 drm_fb_helper_single_add_all_connectors(&ifbdev
->helper
);
715 static void intel_fbdev_initial_config(void *data
, async_cookie_t cookie
)
717 struct intel_fbdev
*ifbdev
= data
;
719 /* Due to peculiar init order wrt to hpd handling this is separate. */
720 if (drm_fb_helper_initial_config(&ifbdev
->helper
,
721 ifbdev
->preferred_bpp
)) {
722 intel_fbdev_unregister(to_i915(ifbdev
->helper
.dev
));
723 intel_fbdev_fini(to_i915(ifbdev
->helper
.dev
));
727 void intel_fbdev_initial_config_async(struct drm_device
*dev
)
729 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
734 ifbdev
->cookie
= async_schedule(intel_fbdev_initial_config
, ifbdev
);
737 static void intel_fbdev_sync(struct intel_fbdev
*ifbdev
)
742 /* Only serialises with all preceding async calls, hence +1 */
743 async_synchronize_cookie(ifbdev
->cookie
+ 1);
747 void intel_fbdev_unregister(struct drm_i915_private
*dev_priv
)
749 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
754 cancel_work_sync(&dev_priv
->fbdev_suspend_work
);
755 if (!current_is_async())
756 intel_fbdev_sync(ifbdev
);
758 drm_fb_helper_unregister_fbi(&ifbdev
->helper
);
761 void intel_fbdev_fini(struct drm_i915_private
*dev_priv
)
763 struct intel_fbdev
*ifbdev
= fetch_and_zero(&dev_priv
->fbdev
);
768 intel_fbdev_destroy(ifbdev
);
771 void intel_fbdev_set_suspend(struct drm_device
*dev
, int state
, bool synchronous
)
773 struct drm_i915_private
*dev_priv
= to_i915(dev
);
774 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
775 struct fb_info
*info
;
777 if (!ifbdev
|| !ifbdev
->vma
)
780 info
= ifbdev
->helper
.fbdev
;
783 /* Flush any pending work to turn the console on, and then
784 * wait to turn it off. It must be synchronous as we are
785 * about to suspend or unload the driver.
787 * Note that from within the work-handler, we cannot flush
788 * ourselves, so only flush outstanding work upon suspend!
790 if (state
!= FBINFO_STATE_RUNNING
)
791 flush_work(&dev_priv
->fbdev_suspend_work
);
795 * The console lock can be pretty contented on resume due
796 * to all the printk activity. Try to keep it out of the hot
797 * path of resume if possible.
799 WARN_ON(state
!= FBINFO_STATE_RUNNING
);
800 if (!console_trylock()) {
801 /* Don't block our own workqueue as this can
802 * be run in parallel with other i915.ko tasks.
804 schedule_work(&dev_priv
->fbdev_suspend_work
);
809 /* On resume from hibernation: If the object is shmemfs backed, it has
810 * been restored from swap. If the object is stolen however, it will be
811 * full of whatever garbage was left in there.
813 if (state
== FBINFO_STATE_RUNNING
&& ifbdev
->fb
->obj
->stolen
)
814 memset_io(info
->screen_base
, 0, info
->screen_size
);
816 drm_fb_helper_set_suspend(&ifbdev
->helper
, state
);
820 void intel_fbdev_output_poll_changed(struct drm_device
*dev
)
822 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
825 drm_fb_helper_hotplug_event(&ifbdev
->helper
);
828 void intel_fbdev_restore_mode(struct drm_device
*dev
)
830 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
835 intel_fbdev_sync(ifbdev
);
839 if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev
->helper
) == 0)
840 intel_fbdev_invalidate(ifbdev
);