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 int intel_fbdev_set_par(struct fb_info
*info
)
50 struct drm_fb_helper
*fb_helper
= info
->par
;
51 struct intel_fbdev
*ifbdev
=
52 container_of(fb_helper
, struct intel_fbdev
, helper
);
55 ret
= drm_fb_helper_set_par(info
);
58 mutex_lock(&fb_helper
->dev
->struct_mutex
);
59 intel_fb_obj_invalidate(ifbdev
->fb
->obj
, ORIGIN_GTT
);
60 mutex_unlock(&fb_helper
->dev
->struct_mutex
);
66 static int intel_fbdev_blank(int blank
, struct fb_info
*info
)
68 struct drm_fb_helper
*fb_helper
= info
->par
;
69 struct intel_fbdev
*ifbdev
=
70 container_of(fb_helper
, struct intel_fbdev
, helper
);
73 ret
= drm_fb_helper_blank(blank
, info
);
76 mutex_lock(&fb_helper
->dev
->struct_mutex
);
77 intel_fb_obj_invalidate(ifbdev
->fb
->obj
, ORIGIN_GTT
);
78 mutex_unlock(&fb_helper
->dev
->struct_mutex
);
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
);
95 mutex_lock(&fb_helper
->dev
->struct_mutex
);
96 intel_fb_obj_invalidate(ifbdev
->fb
->obj
, ORIGIN_GTT
);
97 mutex_unlock(&fb_helper
->dev
->struct_mutex
);
103 static struct fb_ops intelfb_ops
= {
104 .owner
= THIS_MODULE
,
105 DRM_FB_HELPER_DEFAULT_OPS
,
106 .fb_set_par
= intel_fbdev_set_par
,
107 .fb_fillrect
= drm_fb_helper_cfb_fillrect
,
108 .fb_copyarea
= drm_fb_helper_cfb_copyarea
,
109 .fb_imageblit
= drm_fb_helper_cfb_imageblit
,
110 .fb_pan_display
= intel_fbdev_pan_display
,
111 .fb_blank
= intel_fbdev_blank
,
114 static int intelfb_alloc(struct drm_fb_helper
*helper
,
115 struct drm_fb_helper_surface_size
*sizes
)
117 struct intel_fbdev
*ifbdev
=
118 container_of(helper
, struct intel_fbdev
, helper
);
119 struct drm_framebuffer
*fb
;
120 struct drm_device
*dev
= helper
->dev
;
121 struct drm_i915_private
*dev_priv
= to_i915(dev
);
122 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
123 struct drm_mode_fb_cmd2 mode_cmd
= {};
124 struct drm_i915_gem_object
*obj
= NULL
;
127 /* we don't do packed 24bpp */
128 if (sizes
->surface_bpp
== 24)
129 sizes
->surface_bpp
= 32;
131 mode_cmd
.width
= sizes
->surface_width
;
132 mode_cmd
.height
= sizes
->surface_height
;
134 mode_cmd
.pitches
[0] = ALIGN(mode_cmd
.width
*
135 DIV_ROUND_UP(sizes
->surface_bpp
, 8), 64);
136 mode_cmd
.pixel_format
= drm_mode_legacy_fb_format(sizes
->surface_bpp
,
137 sizes
->surface_depth
);
139 mutex_lock(&dev
->struct_mutex
);
141 size
= mode_cmd
.pitches
[0] * mode_cmd
.height
;
142 size
= PAGE_ALIGN(size
);
144 /* If the FB is too big, just don't use it since fbdev is not very
145 * important and we should probably use that space with FBC or other
147 if (size
* 2 < ggtt
->stolen_usable_size
)
148 obj
= i915_gem_object_create_stolen(dev_priv
, size
);
150 obj
= i915_gem_object_create(dev_priv
, size
);
152 DRM_ERROR("failed to allocate framebuffer\n");
157 fb
= __intel_framebuffer_create(dev
, &mode_cmd
, obj
);
159 i915_gem_object_put(obj
);
164 mutex_unlock(&dev
->struct_mutex
);
166 ifbdev
->fb
= to_intel_framebuffer(fb
);
171 mutex_unlock(&dev
->struct_mutex
);
175 static int intelfb_create(struct drm_fb_helper
*helper
,
176 struct drm_fb_helper_surface_size
*sizes
)
178 struct intel_fbdev
*ifbdev
=
179 container_of(helper
, struct intel_fbdev
, helper
);
180 struct intel_framebuffer
*intel_fb
= ifbdev
->fb
;
181 struct drm_device
*dev
= helper
->dev
;
182 struct drm_i915_private
*dev_priv
= to_i915(dev
);
183 struct pci_dev
*pdev
= dev_priv
->drm
.pdev
;
184 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
185 struct fb_info
*info
;
186 struct drm_framebuffer
*fb
;
187 struct i915_vma
*vma
;
188 bool prealloc
= false;
193 (sizes
->fb_width
> intel_fb
->base
.width
||
194 sizes
->fb_height
> intel_fb
->base
.height
)) {
195 DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
197 intel_fb
->base
.width
, intel_fb
->base
.height
,
198 sizes
->fb_width
, sizes
->fb_height
);
199 drm_framebuffer_unreference(&intel_fb
->base
);
200 intel_fb
= ifbdev
->fb
= NULL
;
202 if (!intel_fb
|| WARN_ON(!intel_fb
->obj
)) {
203 DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
204 ret
= intelfb_alloc(helper
, sizes
);
207 intel_fb
= ifbdev
->fb
;
209 DRM_DEBUG_KMS("re-using BIOS fb\n");
211 sizes
->fb_width
= intel_fb
->base
.width
;
212 sizes
->fb_height
= intel_fb
->base
.height
;
215 mutex_lock(&dev
->struct_mutex
);
217 /* Pin the GGTT vma for our access via info->screen_base.
218 * This also validates that any existing fb inherited from the
219 * BIOS is suitable for own access.
221 vma
= intel_pin_and_fence_fb_obj(&ifbdev
->fb
->base
, DRM_ROTATE_0
);
227 info
= drm_fb_helper_alloc_fbi(helper
);
229 DRM_ERROR("Failed to allocate fb_info\n");
236 fb
= &ifbdev
->fb
->base
;
238 ifbdev
->helper
.fb
= fb
;
240 strcpy(info
->fix
.id
, "inteldrmfb");
242 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
243 info
->fbops
= &intelfb_ops
;
245 /* setup aperture base/size for vesafb takeover */
246 info
->apertures
->ranges
[0].base
= dev
->mode_config
.fb_base
;
247 info
->apertures
->ranges
[0].size
= ggtt
->mappable_end
;
249 info
->fix
.smem_start
= dev
->mode_config
.fb_base
+ i915_ggtt_offset(vma
);
250 info
->fix
.smem_len
= vma
->node
.size
;
252 vaddr
= i915_vma_pin_iomap(vma
);
254 DRM_ERROR("Failed to remap framebuffer into virtual memory\n");
255 ret
= PTR_ERR(vaddr
);
256 goto out_destroy_fbi
;
258 info
->screen_base
= vaddr
;
259 info
->screen_size
= vma
->node
.size
;
261 /* This driver doesn't need a VT switch to restore the mode on resume */
262 info
->skip_vt_switch
= true;
264 drm_fb_helper_fill_fix(info
, fb
->pitches
[0], fb
->format
->depth
);
265 drm_fb_helper_fill_var(info
, &ifbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
267 /* If the object is shmemfs backed, it will have given us zeroed pages.
268 * If the object is stolen however, it will be full of whatever
269 * garbage was left in there.
271 if (intel_fb
->obj
->stolen
&& !prealloc
)
272 memset_io(info
->screen_base
, 0, info
->screen_size
);
274 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
276 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x\n",
277 fb
->width
, fb
->height
, i915_ggtt_offset(vma
));
280 mutex_unlock(&dev
->struct_mutex
);
281 vga_switcheroo_client_fb_set(pdev
, info
);
285 drm_fb_helper_release_fbi(helper
);
287 intel_unpin_fb_vma(vma
);
289 mutex_unlock(&dev
->struct_mutex
);
293 /** Sets the color ramps on behalf of RandR */
294 static void intel_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
297 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
299 intel_crtc
->lut_r
[regno
] = red
>> 8;
300 intel_crtc
->lut_g
[regno
] = green
>> 8;
301 intel_crtc
->lut_b
[regno
] = blue
>> 8;
304 static void intel_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
305 u16
*blue
, int regno
)
307 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
309 *red
= intel_crtc
->lut_r
[regno
] << 8;
310 *green
= intel_crtc
->lut_g
[regno
] << 8;
311 *blue
= intel_crtc
->lut_b
[regno
] << 8;
314 static struct drm_fb_helper_crtc
*
315 intel_fb_helper_crtc(struct drm_fb_helper
*fb_helper
, struct drm_crtc
*crtc
)
319 for (i
= 0; i
< fb_helper
->crtc_count
; i
++)
320 if (fb_helper
->crtc_info
[i
].mode_set
.crtc
== crtc
)
321 return &fb_helper
->crtc_info
[i
];
327 * Try to read the BIOS display configuration and use it for the initial
330 * The BIOS or boot loader will generally create an initial display
331 * configuration for us that includes some set of active pipes and displays.
332 * This routine tries to figure out which pipes and connectors are active
333 * and stuffs them into the crtcs and modes array given to us by the
334 * drm_fb_helper code.
336 * The overall sequence is:
337 * intel_fbdev_init - from driver load
338 * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
339 * drm_fb_helper_init - build fb helper structs
340 * drm_fb_helper_single_add_all_connectors - more fb helper structs
341 * intel_fbdev_initial_config - apply the config
342 * drm_fb_helper_initial_config - call ->probe then register_framebuffer()
343 * drm_setup_crtcs - build crtc config for fbdev
344 * intel_fb_initial_config - find active connectors etc
345 * drm_fb_helper_single_fb_probe - set up fbdev
346 * intelfb_create - re-use or alloc fb, build out fbdev structs
348 * Note that we don't make special consideration whether we could actually
349 * switch to the selected modes without a full modeset. E.g. when the display
350 * is in VGA mode we need to recalculate watermarks and set a new high-res
351 * framebuffer anyway.
353 static bool intel_fb_initial_config(struct drm_fb_helper
*fb_helper
,
354 struct drm_fb_helper_crtc
**crtcs
,
355 struct drm_display_mode
**modes
,
356 struct drm_fb_offset
*offsets
,
357 bool *enabled
, int width
, int height
)
359 struct drm_i915_private
*dev_priv
= to_i915(fb_helper
->dev
);
360 unsigned long conn_configured
, conn_seq
, mask
;
361 unsigned int count
= min(fb_helper
->connector_count
, BITS_PER_LONG
);
364 bool fallback
= true;
365 int num_connectors_enabled
= 0;
366 int num_connectors_detected
= 0;
368 save_enabled
= kcalloc(count
, sizeof(bool), GFP_KERNEL
);
372 memcpy(save_enabled
, enabled
, count
);
373 mask
= BIT(count
) - 1;
376 conn_seq
= conn_configured
;
377 for (i
= 0; i
< count
; i
++) {
378 struct drm_fb_helper_connector
*fb_conn
;
379 struct drm_connector
*connector
;
380 struct drm_encoder
*encoder
;
381 struct drm_fb_helper_crtc
*new_crtc
;
382 struct intel_crtc
*intel_crtc
;
384 fb_conn
= fb_helper
->connector_info
[i
];
385 connector
= fb_conn
->connector
;
387 if (conn_configured
& BIT(i
))
390 if (conn_seq
== 0 && !connector
->has_tile
)
393 if (connector
->status
== connector_status_connected
)
394 num_connectors_detected
++;
397 DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
399 conn_configured
|= BIT(i
);
403 if (connector
->force
== DRM_FORCE_OFF
) {
404 DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
410 encoder
= connector
->state
->best_encoder
;
411 if (!encoder
|| WARN_ON(!connector
->state
->crtc
)) {
412 if (connector
->force
> DRM_FORCE_OFF
)
415 DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
418 conn_configured
|= BIT(i
);
422 num_connectors_enabled
++;
424 intel_crtc
= to_intel_crtc(connector
->state
->crtc
);
425 for (j
= 0; j
< 256; j
++) {
426 intel_crtc
->lut_r
[j
] = j
;
427 intel_crtc
->lut_g
[j
] = j
;
428 intel_crtc
->lut_b
[j
] = j
;
431 new_crtc
= intel_fb_helper_crtc(fb_helper
,
432 connector
->state
->crtc
);
435 * Make sure we're not trying to drive multiple connectors
436 * with a single CRTC, since our cloning support may not
439 for (j
= 0; j
< count
; j
++) {
440 if (crtcs
[j
] == new_crtc
) {
441 DRM_DEBUG_KMS("fallback: cloned configuration\n");
446 DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
449 /* go for command line mode first */
450 modes
[i
] = drm_pick_cmdline_mode(fb_conn
);
452 /* try for preferred next */
454 DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
455 connector
->name
, connector
->has_tile
);
456 modes
[i
] = drm_has_preferred_mode(fb_conn
, width
,
460 /* No preferred mode marked by the EDID? Are there any modes? */
461 if (!modes
[i
] && !list_empty(&connector
->modes
)) {
462 DRM_DEBUG_KMS("using first mode listed on connector %s\n",
464 modes
[i
] = list_first_entry(&connector
->modes
,
465 struct drm_display_mode
,
469 /* last resort: use current mode */
472 * IMPORTANT: We want to use the adjusted mode (i.e.
473 * after the panel fitter upscaling) as the initial
474 * config, not the input mode, which is what crtc->mode
475 * usually contains. But since our current
476 * code puts a mode derived from the post-pfit timings
477 * into crtc->mode this works out correctly.
479 * This is crtc->mode and not crtc->state->mode for the
480 * fastboot check to work correctly. crtc_state->mode has
481 * I915_MODE_FLAG_INHERITED, which we clear to force check
484 DRM_DEBUG_KMS("looking for current mode on connector %s\n",
486 modes
[i
] = &connector
->state
->crtc
->mode
;
490 DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
492 connector
->state
->crtc
->base
.id
,
493 connector
->state
->crtc
->name
,
494 modes
[i
]->hdisplay
, modes
[i
]->vdisplay
,
495 modes
[i
]->flags
& DRM_MODE_FLAG_INTERLACE
? "i" :"");
498 conn_configured
|= BIT(i
);
501 if ((conn_configured
& mask
) != mask
&& conn_configured
!= conn_seq
)
505 * If the BIOS didn't enable everything it could, fall back to have the
506 * same user experiencing of lighting up as much as possible like the
507 * fbdev helper library.
509 if (num_connectors_enabled
!= num_connectors_detected
&&
510 num_connectors_enabled
< INTEL_INFO(dev_priv
)->num_pipes
) {
511 DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
512 DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled
,
513 num_connectors_detected
);
519 DRM_DEBUG_KMS("Not using firmware configuration\n");
520 memcpy(enabled
, save_enabled
, count
);
529 static const struct drm_fb_helper_funcs intel_fb_helper_funcs
= {
530 .initial_config
= intel_fb_initial_config
,
531 .gamma_set
= intel_crtc_fb_gamma_set
,
532 .gamma_get
= intel_crtc_fb_gamma_get
,
533 .fb_probe
= intelfb_create
,
536 static void intel_fbdev_destroy(struct intel_fbdev
*ifbdev
)
538 /* We rely on the object-free to release the VMA pinning for
539 * the info->screen_base mmaping. Leaking the VMA is simpler than
540 * trying to rectify all the possible error paths leading here.
543 drm_fb_helper_unregister_fbi(&ifbdev
->helper
);
544 drm_fb_helper_release_fbi(&ifbdev
->helper
);
546 drm_fb_helper_fini(&ifbdev
->helper
);
549 mutex_lock(&ifbdev
->helper
.dev
->struct_mutex
);
550 intel_unpin_fb_vma(ifbdev
->vma
);
551 mutex_unlock(&ifbdev
->helper
.dev
->struct_mutex
);
553 drm_framebuffer_remove(&ifbdev
->fb
->base
);
560 * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
561 * The core display code will have read out the current plane configuration,
562 * so we use that to figure out if there's an object for us to use as the
563 * fb, and if so, we re-use it for the fbdev configuration.
565 * Note we only support a single fb shared across pipes for boot (mostly for
566 * fbcon), so we just find the biggest and use that.
568 static bool intel_fbdev_init_bios(struct drm_device
*dev
,
569 struct intel_fbdev
*ifbdev
)
571 struct intel_framebuffer
*fb
= NULL
;
572 struct drm_crtc
*crtc
;
573 struct intel_crtc
*intel_crtc
;
574 unsigned int max_size
= 0;
576 /* Find the largest fb */
577 for_each_crtc(dev
, crtc
) {
578 struct drm_i915_gem_object
*obj
=
579 intel_fb_obj(crtc
->primary
->state
->fb
);
580 intel_crtc
= to_intel_crtc(crtc
);
582 if (!crtc
->state
->active
|| !obj
) {
583 DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
584 pipe_name(intel_crtc
->pipe
));
588 if (obj
->base
.size
> max_size
) {
589 DRM_DEBUG_KMS("found possible fb from plane %c\n",
590 pipe_name(intel_crtc
->pipe
));
591 fb
= to_intel_framebuffer(crtc
->primary
->state
->fb
);
592 max_size
= obj
->base
.size
;
597 DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
601 /* Now make sure all the pipes will fit into it */
602 for_each_crtc(dev
, crtc
) {
603 unsigned int cur_size
;
605 intel_crtc
= to_intel_crtc(crtc
);
607 if (!crtc
->state
->active
) {
608 DRM_DEBUG_KMS("pipe %c not active, skipping\n",
609 pipe_name(intel_crtc
->pipe
));
613 DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
614 pipe_name(intel_crtc
->pipe
));
617 * See if the plane fb we found above will fit on this
618 * pipe. Note we need to use the selected fb's pitch and bpp
619 * rather than the current pipe's, since they differ.
621 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
;
622 cur_size
= cur_size
* fb
->base
.format
->cpp
[0];
623 if (fb
->base
.pitches
[0] < cur_size
) {
624 DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n",
625 pipe_name(intel_crtc
->pipe
),
626 cur_size
, fb
->base
.pitches
[0]);
631 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
;
632 cur_size
= intel_fb_align_height(dev
, cur_size
,
633 fb
->base
.format
->format
,
635 cur_size
*= fb
->base
.pitches
[0];
636 DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
637 pipe_name(intel_crtc
->pipe
),
638 intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
,
639 intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
,
640 fb
->base
.format
->cpp
[0] * 8,
643 if (cur_size
> max_size
) {
644 DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
645 pipe_name(intel_crtc
->pipe
),
651 DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
652 pipe_name(intel_crtc
->pipe
),
657 DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
661 ifbdev
->preferred_bpp
= fb
->base
.format
->cpp
[0] * 8;
664 drm_framebuffer_reference(&ifbdev
->fb
->base
);
666 /* Final pass to check if any active pipes don't have fbs */
667 for_each_crtc(dev
, crtc
) {
668 intel_crtc
= to_intel_crtc(crtc
);
670 if (!crtc
->state
->active
)
673 WARN(!crtc
->primary
->fb
,
674 "re-used BIOS config but lost an fb on crtc %d\n",
679 DRM_DEBUG_KMS("using BIOS fb for initial console\n");
687 static void intel_fbdev_suspend_worker(struct work_struct
*work
)
689 intel_fbdev_set_suspend(&container_of(work
,
690 struct drm_i915_private
,
691 fbdev_suspend_work
)->drm
,
692 FBINFO_STATE_RUNNING
,
696 int intel_fbdev_init(struct drm_device
*dev
)
698 struct drm_i915_private
*dev_priv
= to_i915(dev
);
699 struct intel_fbdev
*ifbdev
;
702 if (WARN_ON(INTEL_INFO(dev_priv
)->num_pipes
== 0))
705 ifbdev
= kzalloc(sizeof(struct intel_fbdev
), GFP_KERNEL
);
709 drm_fb_helper_prepare(dev
, &ifbdev
->helper
, &intel_fb_helper_funcs
);
711 if (!intel_fbdev_init_bios(dev
, ifbdev
))
712 ifbdev
->preferred_bpp
= 32;
714 ret
= drm_fb_helper_init(dev
, &ifbdev
->helper
, 4);
720 dev_priv
->fbdev
= ifbdev
;
721 INIT_WORK(&dev_priv
->fbdev_suspend_work
, intel_fbdev_suspend_worker
);
723 drm_fb_helper_single_add_all_connectors(&ifbdev
->helper
);
728 static void intel_fbdev_initial_config(void *data
, async_cookie_t cookie
)
730 struct intel_fbdev
*ifbdev
= data
;
732 /* Due to peculiar init order wrt to hpd handling this is separate. */
733 if (drm_fb_helper_initial_config(&ifbdev
->helper
,
734 ifbdev
->preferred_bpp
))
735 intel_fbdev_fini(ifbdev
->helper
.dev
);
738 void intel_fbdev_initial_config_async(struct drm_device
*dev
)
740 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
745 ifbdev
->cookie
= async_schedule(intel_fbdev_initial_config
, ifbdev
);
748 static void intel_fbdev_sync(struct intel_fbdev
*ifbdev
)
753 /* Only serialises with all preceding async calls, hence +1 */
754 async_synchronize_cookie(ifbdev
->cookie
+ 1);
758 void intel_fbdev_fini(struct drm_device
*dev
)
760 struct drm_i915_private
*dev_priv
= to_i915(dev
);
761 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
766 cancel_work_sync(&dev_priv
->fbdev_suspend_work
);
767 if (!current_is_async())
768 intel_fbdev_sync(ifbdev
);
770 intel_fbdev_destroy(ifbdev
);
771 dev_priv
->fbdev
= NULL
;
774 void intel_fbdev_set_suspend(struct drm_device
*dev
, int state
, bool synchronous
)
776 struct drm_i915_private
*dev_priv
= to_i915(dev
);
777 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
778 struct fb_info
*info
;
780 if (!ifbdev
|| !ifbdev
->fb
)
783 info
= ifbdev
->helper
.fbdev
;
786 /* Flush any pending work to turn the console on, and then
787 * wait to turn it off. It must be synchronous as we are
788 * about to suspend or unload the driver.
790 * Note that from within the work-handler, we cannot flush
791 * ourselves, so only flush outstanding work upon suspend!
793 if (state
!= FBINFO_STATE_RUNNING
)
794 flush_work(&dev_priv
->fbdev_suspend_work
);
798 * The console lock can be pretty contented on resume due
799 * to all the printk activity. Try to keep it out of the hot
800 * path of resume if possible.
802 WARN_ON(state
!= FBINFO_STATE_RUNNING
);
803 if (!console_trylock()) {
804 /* Don't block our own workqueue as this can
805 * be run in parallel with other i915.ko tasks.
807 schedule_work(&dev_priv
->fbdev_suspend_work
);
812 /* On resume from hibernation: If the object is shmemfs backed, it has
813 * been restored from swap. If the object is stolen however, it will be
814 * full of whatever garbage was left in there.
816 if (state
== FBINFO_STATE_RUNNING
&& ifbdev
->fb
->obj
->stolen
)
817 memset_io(info
->screen_base
, 0, info
->screen_size
);
819 drm_fb_helper_set_suspend(&ifbdev
->helper
, state
);
823 void intel_fbdev_output_poll_changed(struct drm_device
*dev
)
825 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
827 if (ifbdev
&& ifbdev
->fb
)
828 drm_fb_helper_hotplug_event(&ifbdev
->helper
);
831 void intel_fbdev_restore_mode(struct drm_device
*dev
)
833 struct intel_fbdev
*ifbdev
= to_i915(dev
)->fbdev
;
838 intel_fbdev_sync(ifbdev
);
842 if (drm_fb_helper_restore_fbdev_mode_unlocked(&ifbdev
->helper
)) {
843 DRM_DEBUG("failed to restore crtc mode\n");
845 mutex_lock(&dev
->struct_mutex
);
846 intel_fb_obj_invalidate(ifbdev
->fb
->obj
, ORIGIN_GTT
);
847 mutex_unlock(&dev
->struct_mutex
);