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>
38 #include <linux/init.h>
39 #include <linux/vga_switcheroo.h>
42 #include <drm/drm_crtc.h>
43 #include <drm/drm_fb_helper.h>
44 #include "intel_drv.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 .fb_check_var
= drm_fb_helper_check_var
,
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
,
112 .fb_setcmap
= drm_fb_helper_setcmap
,
113 .fb_debug_enter
= drm_fb_helper_debug_enter
,
114 .fb_debug_leave
= drm_fb_helper_debug_leave
,
117 static int intelfb_alloc(struct drm_fb_helper
*helper
,
118 struct drm_fb_helper_surface_size
*sizes
)
120 struct intel_fbdev
*ifbdev
=
121 container_of(helper
, struct intel_fbdev
, helper
);
122 struct drm_framebuffer
*fb
;
123 struct drm_device
*dev
= helper
->dev
;
124 struct drm_i915_private
*dev_priv
= to_i915(dev
);
125 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
126 struct drm_mode_fb_cmd2 mode_cmd
= {};
127 struct drm_i915_gem_object
*obj
= NULL
;
130 /* we don't do packed 24bpp */
131 if (sizes
->surface_bpp
== 24)
132 sizes
->surface_bpp
= 32;
134 mode_cmd
.width
= sizes
->surface_width
;
135 mode_cmd
.height
= sizes
->surface_height
;
137 mode_cmd
.pitches
[0] = ALIGN(mode_cmd
.width
*
138 DIV_ROUND_UP(sizes
->surface_bpp
, 8), 64);
139 mode_cmd
.pixel_format
= drm_mode_legacy_fb_format(sizes
->surface_bpp
,
140 sizes
->surface_depth
);
142 mutex_lock(&dev
->struct_mutex
);
144 size
= mode_cmd
.pitches
[0] * mode_cmd
.height
;
145 size
= PAGE_ALIGN(size
);
147 /* If the FB is too big, just don't use it since fbdev is not very
148 * important and we should probably use that space with FBC or other
150 if (size
* 2 < ggtt
->stolen_usable_size
)
151 obj
= i915_gem_object_create_stolen(dev
, size
);
153 obj
= i915_gem_object_create(dev
, size
);
155 DRM_ERROR("failed to allocate framebuffer\n");
160 fb
= __intel_framebuffer_create(dev
, &mode_cmd
, obj
);
162 drm_gem_object_unreference(&obj
->base
);
167 mutex_unlock(&dev
->struct_mutex
);
169 ifbdev
->fb
= to_intel_framebuffer(fb
);
174 mutex_unlock(&dev
->struct_mutex
);
178 static int intelfb_create(struct drm_fb_helper
*helper
,
179 struct drm_fb_helper_surface_size
*sizes
)
181 struct intel_fbdev
*ifbdev
=
182 container_of(helper
, struct intel_fbdev
, helper
);
183 struct intel_framebuffer
*intel_fb
= ifbdev
->fb
;
184 struct drm_device
*dev
= helper
->dev
;
185 struct drm_i915_private
*dev_priv
= to_i915(dev
);
186 struct i915_ggtt
*ggtt
= &dev_priv
->ggtt
;
187 struct fb_info
*info
;
188 struct drm_framebuffer
*fb
;
189 struct i915_vma
*vma
;
190 struct drm_i915_gem_object
*obj
;
191 bool prealloc
= false;
196 (sizes
->fb_width
> intel_fb
->base
.width
||
197 sizes
->fb_height
> intel_fb
->base
.height
)) {
198 DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
200 intel_fb
->base
.width
, intel_fb
->base
.height
,
201 sizes
->fb_width
, sizes
->fb_height
);
202 drm_framebuffer_unreference(&intel_fb
->base
);
203 intel_fb
= ifbdev
->fb
= NULL
;
205 if (!intel_fb
|| WARN_ON(!intel_fb
->obj
)) {
206 DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
207 ret
= intelfb_alloc(helper
, sizes
);
210 intel_fb
= ifbdev
->fb
;
212 DRM_DEBUG_KMS("re-using BIOS fb\n");
214 sizes
->fb_width
= intel_fb
->base
.width
;
215 sizes
->fb_height
= intel_fb
->base
.height
;
220 mutex_lock(&dev
->struct_mutex
);
222 /* Pin the GGTT vma for our access via info->screen_base.
223 * This also validates that any existing fb inherited from the
224 * BIOS is suitable for own access.
226 ret
= intel_pin_and_fence_fb_obj(&ifbdev
->fb
->base
, BIT(DRM_ROTATE_0
));
230 info
= drm_fb_helper_alloc_fbi(helper
);
232 DRM_ERROR("Failed to allocate fb_info\n");
239 fb
= &ifbdev
->fb
->base
;
241 ifbdev
->helper
.fb
= fb
;
243 strcpy(info
->fix
.id
, "inteldrmfb");
245 info
->flags
= FBINFO_DEFAULT
| FBINFO_CAN_FORCE_OUTPUT
;
246 info
->fbops
= &intelfb_ops
;
248 vma
= i915_gem_obj_to_ggtt(obj
);
250 /* setup aperture base/size for vesafb takeover */
251 info
->apertures
->ranges
[0].base
= dev
->mode_config
.fb_base
;
252 info
->apertures
->ranges
[0].size
= ggtt
->mappable_end
;
254 info
->fix
.smem_start
= dev
->mode_config
.fb_base
+ vma
->node
.start
;
255 info
->fix
.smem_len
= vma
->node
.size
;
257 vaddr
= i915_vma_pin_iomap(vma
);
259 DRM_ERROR("Failed to remap framebuffer into virtual memory\n");
260 ret
= PTR_ERR(vaddr
);
261 goto out_destroy_fbi
;
263 info
->screen_base
= vaddr
;
264 info
->screen_size
= vma
->node
.size
;
266 /* This driver doesn't need a VT switch to restore the mode on resume */
267 info
->skip_vt_switch
= true;
269 drm_fb_helper_fill_fix(info
, fb
->pitches
[0], fb
->depth
);
270 drm_fb_helper_fill_var(info
, &ifbdev
->helper
, sizes
->fb_width
, sizes
->fb_height
);
272 /* If the object is shmemfs backed, it will have given us zeroed pages.
273 * If the object is stolen however, it will be full of whatever
274 * garbage was left in there.
276 if (ifbdev
->fb
->obj
->stolen
&& !prealloc
)
277 memset_io(info
->screen_base
, 0, info
->screen_size
);
279 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
281 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n",
282 fb
->width
, fb
->height
,
283 i915_gem_obj_ggtt_offset(obj
), obj
);
285 mutex_unlock(&dev
->struct_mutex
);
286 vga_switcheroo_client_fb_set(dev
->pdev
, info
);
290 drm_fb_helper_release_fbi(helper
);
292 intel_unpin_fb_obj(&ifbdev
->fb
->base
, BIT(DRM_ROTATE_0
));
294 mutex_unlock(&dev
->struct_mutex
);
298 /** Sets the color ramps on behalf of RandR */
299 static void intel_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
302 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
304 intel_crtc
->lut_r
[regno
] = red
>> 8;
305 intel_crtc
->lut_g
[regno
] = green
>> 8;
306 intel_crtc
->lut_b
[regno
] = blue
>> 8;
309 static void intel_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
310 u16
*blue
, int regno
)
312 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
314 *red
= intel_crtc
->lut_r
[regno
] << 8;
315 *green
= intel_crtc
->lut_g
[regno
] << 8;
316 *blue
= intel_crtc
->lut_b
[regno
] << 8;
319 static struct drm_fb_helper_crtc
*
320 intel_fb_helper_crtc(struct drm_fb_helper
*fb_helper
, struct drm_crtc
*crtc
)
324 for (i
= 0; i
< fb_helper
->crtc_count
; i
++)
325 if (fb_helper
->crtc_info
[i
].mode_set
.crtc
== crtc
)
326 return &fb_helper
->crtc_info
[i
];
332 * Try to read the BIOS display configuration and use it for the initial
335 * The BIOS or boot loader will generally create an initial display
336 * configuration for us that includes some set of active pipes and displays.
337 * This routine tries to figure out which pipes and connectors are active
338 * and stuffs them into the crtcs and modes array given to us by the
339 * drm_fb_helper code.
341 * The overall sequence is:
342 * intel_fbdev_init - from driver load
343 * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
344 * drm_fb_helper_init - build fb helper structs
345 * drm_fb_helper_single_add_all_connectors - more fb helper structs
346 * intel_fbdev_initial_config - apply the config
347 * drm_fb_helper_initial_config - call ->probe then register_framebuffer()
348 * drm_setup_crtcs - build crtc config for fbdev
349 * intel_fb_initial_config - find active connectors etc
350 * drm_fb_helper_single_fb_probe - set up fbdev
351 * intelfb_create - re-use or alloc fb, build out fbdev structs
353 * Note that we don't make special consideration whether we could actually
354 * switch to the selected modes without a full modeset. E.g. when the display
355 * is in VGA mode we need to recalculate watermarks and set a new high-res
356 * framebuffer anyway.
358 static bool intel_fb_initial_config(struct drm_fb_helper
*fb_helper
,
359 struct drm_fb_helper_crtc
**crtcs
,
360 struct drm_display_mode
**modes
,
361 struct drm_fb_offset
*offsets
,
362 bool *enabled
, int width
, int height
)
364 struct drm_device
*dev
= fb_helper
->dev
;
367 bool fallback
= true;
368 int num_connectors_enabled
= 0;
369 int num_connectors_detected
= 0;
370 uint64_t conn_configured
= 0, mask
;
373 save_enabled
= kcalloc(fb_helper
->connector_count
, sizeof(bool),
378 memcpy(save_enabled
, enabled
, fb_helper
->connector_count
);
379 mask
= (1 << fb_helper
->connector_count
) - 1;
381 for (i
= 0; i
< fb_helper
->connector_count
; i
++) {
382 struct drm_fb_helper_connector
*fb_conn
;
383 struct drm_connector
*connector
;
384 struct drm_encoder
*encoder
;
385 struct drm_fb_helper_crtc
*new_crtc
;
386 struct intel_crtc
*intel_crtc
;
388 fb_conn
= fb_helper
->connector_info
[i
];
389 connector
= fb_conn
->connector
;
391 if (conn_configured
& (1 << i
))
394 if (pass
== 0 && !connector
->has_tile
)
397 if (connector
->status
== connector_status_connected
)
398 num_connectors_detected
++;
401 DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
403 conn_configured
|= (1 << i
);
407 if (connector
->force
== DRM_FORCE_OFF
) {
408 DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
414 encoder
= connector
->state
->best_encoder
;
415 if (!encoder
|| WARN_ON(!connector
->state
->crtc
)) {
416 if (connector
->force
> DRM_FORCE_OFF
)
419 DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
422 conn_configured
|= (1 << i
);
426 num_connectors_enabled
++;
428 intel_crtc
= to_intel_crtc(connector
->state
->crtc
);
429 for (j
= 0; j
< 256; j
++) {
430 intel_crtc
->lut_r
[j
] = j
;
431 intel_crtc
->lut_g
[j
] = j
;
432 intel_crtc
->lut_b
[j
] = j
;
435 new_crtc
= intel_fb_helper_crtc(fb_helper
, connector
->state
->crtc
);
438 * Make sure we're not trying to drive multiple connectors
439 * with a single CRTC, since our cloning support may not
442 for (j
= 0; j
< fb_helper
->connector_count
; j
++) {
443 if (crtcs
[j
] == new_crtc
) {
444 DRM_DEBUG_KMS("fallback: cloned configuration\n");
449 DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
452 /* go for command line mode first */
453 modes
[i
] = drm_pick_cmdline_mode(fb_conn
, width
, height
);
455 /* try for preferred next */
457 DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
458 connector
->name
, connector
->has_tile
);
459 modes
[i
] = drm_has_preferred_mode(fb_conn
, width
,
463 /* No preferred mode marked by the EDID? Are there any modes? */
464 if (!modes
[i
] && !list_empty(&connector
->modes
)) {
465 DRM_DEBUG_KMS("using first mode listed on connector %s\n",
467 modes
[i
] = list_first_entry(&connector
->modes
,
468 struct drm_display_mode
,
472 /* last resort: use current mode */
475 * IMPORTANT: We want to use the adjusted mode (i.e.
476 * after the panel fitter upscaling) as the initial
477 * config, not the input mode, which is what crtc->mode
478 * usually contains. But since our current
479 * code puts a mode derived from the post-pfit timings
480 * into crtc->mode this works out correctly.
482 * This is crtc->mode and not crtc->state->mode for the
483 * fastboot check to work correctly. crtc_state->mode has
484 * I915_MODE_FLAG_INHERITED, which we clear to force check
487 DRM_DEBUG_KMS("looking for current mode on connector %s\n",
489 modes
[i
] = &connector
->state
->crtc
->mode
;
493 DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n",
495 connector
->state
->crtc
->base
.id
,
496 connector
->state
->crtc
->name
,
497 modes
[i
]->hdisplay
, modes
[i
]->vdisplay
,
498 modes
[i
]->flags
& DRM_MODE_FLAG_INTERLACE
? "i" :"");
501 conn_configured
|= (1 << i
);
504 if ((conn_configured
& mask
) != mask
) {
510 * If the BIOS didn't enable everything it could, fall back to have the
511 * same user experiencing of lighting up as much as possible like the
512 * fbdev helper library.
514 if (num_connectors_enabled
!= num_connectors_detected
&&
515 num_connectors_enabled
< INTEL_INFO(dev
)->num_pipes
) {
516 DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
517 DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled
,
518 num_connectors_detected
);
524 DRM_DEBUG_KMS("Not using firmware configuration\n");
525 memcpy(enabled
, save_enabled
, fb_helper
->connector_count
);
534 static const struct drm_fb_helper_funcs intel_fb_helper_funcs
= {
535 .initial_config
= intel_fb_initial_config
,
536 .gamma_set
= intel_crtc_fb_gamma_set
,
537 .gamma_get
= intel_crtc_fb_gamma_get
,
538 .fb_probe
= intelfb_create
,
541 static void intel_fbdev_destroy(struct drm_device
*dev
,
542 struct intel_fbdev
*ifbdev
)
544 /* We rely on the object-free to release the VMA pinning for
545 * the info->screen_base mmaping. Leaking the VMA is simpler than
546 * trying to rectify all the possible error paths leading here.
549 drm_fb_helper_unregister_fbi(&ifbdev
->helper
);
550 drm_fb_helper_release_fbi(&ifbdev
->helper
);
552 drm_fb_helper_fini(&ifbdev
->helper
);
555 drm_framebuffer_unregister_private(&ifbdev
->fb
->base
);
557 mutex_lock(&dev
->struct_mutex
);
558 intel_unpin_fb_obj(&ifbdev
->fb
->base
, BIT(DRM_ROTATE_0
));
559 mutex_unlock(&dev
->struct_mutex
);
561 drm_framebuffer_remove(&ifbdev
->fb
->base
);
566 * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
567 * The core display code will have read out the current plane configuration,
568 * so we use that to figure out if there's an object for us to use as the
569 * fb, and if so, we re-use it for the fbdev configuration.
571 * Note we only support a single fb shared across pipes for boot (mostly for
572 * fbcon), so we just find the biggest and use that.
574 static bool intel_fbdev_init_bios(struct drm_device
*dev
,
575 struct intel_fbdev
*ifbdev
)
577 struct intel_framebuffer
*fb
= NULL
;
578 struct drm_crtc
*crtc
;
579 struct intel_crtc
*intel_crtc
;
580 unsigned int max_size
= 0;
582 /* Find the largest fb */
583 for_each_crtc(dev
, crtc
) {
584 struct drm_i915_gem_object
*obj
=
585 intel_fb_obj(crtc
->primary
->state
->fb
);
586 intel_crtc
= to_intel_crtc(crtc
);
588 if (!crtc
->state
->active
|| !obj
) {
589 DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
590 pipe_name(intel_crtc
->pipe
));
594 if (obj
->base
.size
> max_size
) {
595 DRM_DEBUG_KMS("found possible fb from plane %c\n",
596 pipe_name(intel_crtc
->pipe
));
597 fb
= to_intel_framebuffer(crtc
->primary
->state
->fb
);
598 max_size
= obj
->base
.size
;
603 DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
607 /* Now make sure all the pipes will fit into it */
608 for_each_crtc(dev
, crtc
) {
609 unsigned int cur_size
;
611 intel_crtc
= to_intel_crtc(crtc
);
613 if (!crtc
->state
->active
) {
614 DRM_DEBUG_KMS("pipe %c not active, skipping\n",
615 pipe_name(intel_crtc
->pipe
));
619 DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
620 pipe_name(intel_crtc
->pipe
));
623 * See if the plane fb we found above will fit on this
624 * pipe. Note we need to use the selected fb's pitch and bpp
625 * rather than the current pipe's, since they differ.
627 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
;
628 cur_size
= cur_size
* fb
->base
.bits_per_pixel
/ 8;
629 if (fb
->base
.pitches
[0] < cur_size
) {
630 DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n",
631 pipe_name(intel_crtc
->pipe
),
632 cur_size
, fb
->base
.pitches
[0]);
637 cur_size
= intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
;
638 cur_size
= intel_fb_align_height(dev
, cur_size
,
639 fb
->base
.pixel_format
,
640 fb
->base
.modifier
[0]);
641 cur_size
*= fb
->base
.pitches
[0];
642 DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
643 pipe_name(intel_crtc
->pipe
),
644 intel_crtc
->config
->base
.adjusted_mode
.crtc_hdisplay
,
645 intel_crtc
->config
->base
.adjusted_mode
.crtc_vdisplay
,
646 fb
->base
.bits_per_pixel
,
649 if (cur_size
> max_size
) {
650 DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
651 pipe_name(intel_crtc
->pipe
),
657 DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
658 pipe_name(intel_crtc
->pipe
),
663 DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
667 ifbdev
->preferred_bpp
= fb
->base
.bits_per_pixel
;
670 drm_framebuffer_reference(&ifbdev
->fb
->base
);
672 /* Final pass to check if any active pipes don't have fbs */
673 for_each_crtc(dev
, crtc
) {
674 intel_crtc
= to_intel_crtc(crtc
);
676 if (!crtc
->state
->active
)
679 WARN(!crtc
->primary
->fb
,
680 "re-used BIOS config but lost an fb on crtc %d\n",
685 DRM_DEBUG_KMS("using BIOS fb for initial console\n");
693 static void intel_fbdev_suspend_worker(struct work_struct
*work
)
695 intel_fbdev_set_suspend(container_of(work
,
696 struct drm_i915_private
,
697 fbdev_suspend_work
)->dev
,
698 FBINFO_STATE_RUNNING
,
702 int intel_fbdev_init(struct drm_device
*dev
)
704 struct intel_fbdev
*ifbdev
;
705 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
708 if (WARN_ON(INTEL_INFO(dev
)->num_pipes
== 0))
711 ifbdev
= kzalloc(sizeof(struct intel_fbdev
), GFP_KERNEL
);
715 drm_fb_helper_prepare(dev
, &ifbdev
->helper
, &intel_fb_helper_funcs
);
717 if (!intel_fbdev_init_bios(dev
, ifbdev
))
718 ifbdev
->preferred_bpp
= 32;
720 ret
= drm_fb_helper_init(dev
, &ifbdev
->helper
,
721 INTEL_INFO(dev
)->num_pipes
, 4);
727 ifbdev
->helper
.atomic
= true;
729 dev_priv
->fbdev
= ifbdev
;
730 INIT_WORK(&dev_priv
->fbdev_suspend_work
, intel_fbdev_suspend_worker
);
732 drm_fb_helper_single_add_all_connectors(&ifbdev
->helper
);
737 static void intel_fbdev_initial_config(void *data
, async_cookie_t cookie
)
739 struct drm_i915_private
*dev_priv
= data
;
740 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
742 /* Due to peculiar init order wrt to hpd handling this is separate. */
743 if (drm_fb_helper_initial_config(&ifbdev
->helper
,
744 ifbdev
->preferred_bpp
))
745 intel_fbdev_fini(dev_priv
->dev
);
748 void intel_fbdev_initial_config_async(struct drm_device
*dev
)
750 async_schedule(intel_fbdev_initial_config
, to_i915(dev
));
753 void intel_fbdev_fini(struct drm_device
*dev
)
755 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
756 if (!dev_priv
->fbdev
)
759 flush_work(&dev_priv
->fbdev_suspend_work
);
761 if (!current_is_async())
762 async_synchronize_full();
763 intel_fbdev_destroy(dev
, dev_priv
->fbdev
);
764 kfree(dev_priv
->fbdev
);
765 dev_priv
->fbdev
= NULL
;
768 void intel_fbdev_set_suspend(struct drm_device
*dev
, int state
, bool synchronous
)
770 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
771 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
772 struct fb_info
*info
;
777 info
= ifbdev
->helper
.fbdev
;
780 /* Flush any pending work to turn the console on, and then
781 * wait to turn it off. It must be synchronous as we are
782 * about to suspend or unload the driver.
784 * Note that from within the work-handler, we cannot flush
785 * ourselves, so only flush outstanding work upon suspend!
787 if (state
!= FBINFO_STATE_RUNNING
)
788 flush_work(&dev_priv
->fbdev_suspend_work
);
792 * The console lock can be pretty contented on resume due
793 * to all the printk activity. Try to keep it out of the hot
794 * path of resume if possible.
796 WARN_ON(state
!= FBINFO_STATE_RUNNING
);
797 if (!console_trylock()) {
798 /* Don't block our own workqueue as this can
799 * be run in parallel with other i915.ko tasks.
801 schedule_work(&dev_priv
->fbdev_suspend_work
);
806 /* On resume from hibernation: If the object is shmemfs backed, it has
807 * been restored from swap. If the object is stolen however, it will be
808 * full of whatever garbage was left in there.
810 if (state
== FBINFO_STATE_RUNNING
&& ifbdev
->fb
->obj
->stolen
)
811 memset_io(info
->screen_base
, 0, info
->screen_size
);
813 drm_fb_helper_set_suspend(&ifbdev
->helper
, state
);
817 void intel_fbdev_output_poll_changed(struct drm_device
*dev
)
819 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
821 drm_fb_helper_hotplug_event(&dev_priv
->fbdev
->helper
);
824 void intel_fbdev_restore_mode(struct drm_device
*dev
)
827 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
828 struct intel_fbdev
*ifbdev
= dev_priv
->fbdev
;
829 struct drm_fb_helper
*fb_helper
;
834 fb_helper
= &ifbdev
->helper
;
836 ret
= drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper
);
838 DRM_DEBUG("failed to restore crtc mode\n");
840 mutex_lock(&fb_helper
->dev
->struct_mutex
);
841 intel_fb_obj_invalidate(ifbdev
->fb
->obj
, ORIGIN_GTT
);
842 mutex_unlock(&fb_helper
->dev
->struct_mutex
);