2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that 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
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
22 static void msm_fb_output_poll_changed(struct drm_device
*dev
)
24 struct msm_drm_private
*priv
= dev
->dev_private
;
26 drm_fb_helper_hotplug_event(priv
->fbdev
);
29 static const struct drm_mode_config_funcs mode_config_funcs
= {
30 .fb_create
= msm_framebuffer_create
,
31 .output_poll_changed
= msm_fb_output_poll_changed
,
34 int msm_register_mmu(struct drm_device
*dev
, struct msm_mmu
*mmu
)
36 struct msm_drm_private
*priv
= dev
->dev_private
;
37 int idx
= priv
->num_mmus
++;
39 if (WARN_ON(idx
>= ARRAY_SIZE(priv
->mmus
)))
42 priv
->mmus
[idx
] = mmu
;
47 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
48 static bool reglog
= false;
49 MODULE_PARM_DESC(reglog
, "Enable register read/write logging");
50 module_param(reglog
, bool, 0600);
56 MODULE_PARM_DESC(vram
, "Configure VRAM size (for devices without IOMMU/GPUMMU");
57 module_param(vram
, charp
, 0);
63 void __iomem
*msm_ioremap(struct platform_device
*pdev
, const char *name
,
71 res
= platform_get_resource_byname(pdev
, IORESOURCE_MEM
, name
);
73 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
76 dev_err(&pdev
->dev
, "failed to get memory resource: %s\n", name
);
77 return ERR_PTR(-EINVAL
);
80 size
= resource_size(res
);
82 ptr
= devm_ioremap_nocache(&pdev
->dev
, res
->start
, size
);
84 dev_err(&pdev
->dev
, "failed to ioremap: %s\n", name
);
85 return ERR_PTR(-ENOMEM
);
89 printk(KERN_DEBUG
"IO:region %s %08x %08lx\n", dbgname
, (u32
)ptr
, size
);
94 void msm_writel(u32 data
, void __iomem
*addr
)
97 printk(KERN_DEBUG
"IO:W %08x %08x\n", (u32
)addr
, data
);
101 u32
msm_readl(const void __iomem
*addr
)
103 u32 val
= readl(addr
);
105 printk(KERN_ERR
"IO:R %08x %08x\n", (u32
)addr
, val
);
113 static int msm_unload(struct drm_device
*dev
)
115 struct msm_drm_private
*priv
= dev
->dev_private
;
116 struct msm_kms
*kms
= priv
->kms
;
117 struct msm_gpu
*gpu
= priv
->gpu
;
119 drm_kms_helper_poll_fini(dev
);
120 drm_mode_config_cleanup(dev
);
121 drm_vblank_cleanup(dev
);
123 pm_runtime_get_sync(dev
->dev
);
124 drm_irq_uninstall(dev
);
125 pm_runtime_put_sync(dev
->dev
);
127 flush_workqueue(priv
->wq
);
128 destroy_workqueue(priv
->wq
);
131 pm_runtime_disable(dev
->dev
);
132 kms
->funcs
->destroy(kms
);
136 mutex_lock(&dev
->struct_mutex
);
137 gpu
->funcs
->pm_suspend(gpu
);
138 gpu
->funcs
->destroy(gpu
);
139 mutex_unlock(&dev
->struct_mutex
);
142 if (priv
->vram
.paddr
) {
143 DEFINE_DMA_ATTRS(attrs
);
144 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING
, &attrs
);
145 drm_mm_takedown(&priv
->vram
.mm
);
146 dma_free_attrs(dev
->dev
, priv
->vram
.size
, NULL
,
147 priv
->vram
.paddr
, &attrs
);
150 component_unbind_all(dev
->dev
, dev
);
152 dev
->dev_private
= NULL
;
159 static int get_mdp_ver(struct platform_device
*pdev
)
162 const static struct of_device_id match_types
[] = { {
163 .compatible
= "qcom,mdss_mdp",
168 struct device
*dev
= &pdev
->dev
;
169 const struct of_device_id
*match
;
170 match
= of_match_node(match_types
, dev
->of_node
);
172 return (int)match
->data
;
177 static int msm_load(struct drm_device
*dev
, unsigned long flags
)
179 struct platform_device
*pdev
= dev
->platformdev
;
180 struct msm_drm_private
*priv
;
185 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
187 dev_err(dev
->dev
, "failed to allocate private data\n");
191 dev
->dev_private
= priv
;
193 priv
->wq
= alloc_ordered_workqueue("msm", 0);
194 init_waitqueue_head(&priv
->fence_event
);
196 INIT_LIST_HEAD(&priv
->inactive_list
);
197 INIT_LIST_HEAD(&priv
->fence_cbs
);
199 drm_mode_config_init(dev
);
201 /* if we have no IOMMU, then we need to use carveout allocator.
202 * Grab the entire CMA chunk carved out in early startup in
205 if (!iommu_present(&platform_bus_type
)) {
206 DEFINE_DMA_ATTRS(attrs
);
210 DBG("using %s VRAM carveout", vram
);
211 size
= memparse(vram
, NULL
);
212 priv
->vram
.size
= size
;
214 drm_mm_init(&priv
->vram
.mm
, 0, (size
>> PAGE_SHIFT
) - 1);
216 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING
, &attrs
);
217 dma_set_attr(DMA_ATTR_WRITE_COMBINE
, &attrs
);
219 /* note that for no-kernel-mapping, the vaddr returned
220 * is bogus, but non-null if allocation succeeded:
222 p
= dma_alloc_attrs(dev
->dev
, size
,
223 &priv
->vram
.paddr
, 0, &attrs
);
225 dev_err(dev
->dev
, "failed to allocate VRAM\n");
226 priv
->vram
.paddr
= 0;
231 dev_info(dev
->dev
, "VRAM: %08x->%08x\n",
232 (uint32_t)priv
->vram
.paddr
,
233 (uint32_t)(priv
->vram
.paddr
+ size
));
236 platform_set_drvdata(pdev
, dev
);
238 /* Bind all our sub-components: */
239 ret
= component_bind_all(dev
->dev
, dev
);
243 switch (get_mdp_ver(pdev
)) {
245 kms
= mdp4_kms_init(dev
);
248 kms
= mdp5_kms_init(dev
);
251 kms
= ERR_PTR(-ENODEV
);
257 * NOTE: once we have GPU support, having no kms should not
258 * be considered fatal.. ideally we would still support gpu
259 * and (for example) use dmabuf/prime to share buffers with
260 * imx drm driver on iMX5
262 dev_err(dev
->dev
, "failed to load kms\n");
270 pm_runtime_enable(dev
->dev
);
271 ret
= kms
->funcs
->hw_init(kms
);
273 dev_err(dev
->dev
, "kms hw init failed: %d\n", ret
);
278 dev
->mode_config
.min_width
= 0;
279 dev
->mode_config
.min_height
= 0;
280 dev
->mode_config
.max_width
= 2048;
281 dev
->mode_config
.max_height
= 2048;
282 dev
->mode_config
.funcs
= &mode_config_funcs
;
284 ret
= drm_vblank_init(dev
, 1);
286 dev_err(dev
->dev
, "failed to initialize vblank\n");
290 pm_runtime_get_sync(dev
->dev
);
291 ret
= drm_irq_install(dev
);
292 pm_runtime_put_sync(dev
->dev
);
294 dev_err(dev
->dev
, "failed to install IRQ handler\n");
298 #ifdef CONFIG_DRM_MSM_FBDEV
299 priv
->fbdev
= msm_fbdev_init(dev
);
302 drm_kms_helper_poll_init(dev
);
311 static void load_gpu(struct drm_device
*dev
)
313 struct msm_drm_private
*priv
= dev
->dev_private
;
319 mutex_lock(&dev
->struct_mutex
);
320 gpu
= a3xx_gpu_init(dev
);
322 dev_warn(dev
->dev
, "failed to load a3xx gpu\n");
329 gpu
->funcs
->pm_resume(gpu
);
330 ret
= gpu
->funcs
->hw_init(gpu
);
332 dev_err(dev
->dev
, "gpu hw init failed: %d\n", ret
);
333 gpu
->funcs
->destroy(gpu
);
336 /* give inactive pm a chance to kick in: */
344 mutex_unlock(&dev
->struct_mutex
);
347 static int msm_open(struct drm_device
*dev
, struct drm_file
*file
)
349 struct msm_file_private
*ctx
;
351 /* For now, load gpu on open.. to avoid the requirement of having
352 * firmware in the initrd.
356 ctx
= kzalloc(sizeof(*ctx
), GFP_KERNEL
);
360 file
->driver_priv
= ctx
;
365 static void msm_preclose(struct drm_device
*dev
, struct drm_file
*file
)
367 struct msm_drm_private
*priv
= dev
->dev_private
;
368 struct msm_file_private
*ctx
= file
->driver_priv
;
369 struct msm_kms
*kms
= priv
->kms
;
372 kms
->funcs
->preclose(kms
, file
);
374 mutex_lock(&dev
->struct_mutex
);
375 if (ctx
== priv
->lastctx
)
376 priv
->lastctx
= NULL
;
377 mutex_unlock(&dev
->struct_mutex
);
382 static void msm_lastclose(struct drm_device
*dev
)
384 struct msm_drm_private
*priv
= dev
->dev_private
;
386 drm_modeset_lock_all(dev
);
387 drm_fb_helper_restore_fbdev_mode(priv
->fbdev
);
388 drm_modeset_unlock_all(dev
);
392 static irqreturn_t
msm_irq(int irq
, void *arg
)
394 struct drm_device
*dev
= arg
;
395 struct msm_drm_private
*priv
= dev
->dev_private
;
396 struct msm_kms
*kms
= priv
->kms
;
398 return kms
->funcs
->irq(kms
);
401 static void msm_irq_preinstall(struct drm_device
*dev
)
403 struct msm_drm_private
*priv
= dev
->dev_private
;
404 struct msm_kms
*kms
= priv
->kms
;
406 kms
->funcs
->irq_preinstall(kms
);
409 static int msm_irq_postinstall(struct drm_device
*dev
)
411 struct msm_drm_private
*priv
= dev
->dev_private
;
412 struct msm_kms
*kms
= priv
->kms
;
414 return kms
->funcs
->irq_postinstall(kms
);
417 static void msm_irq_uninstall(struct drm_device
*dev
)
419 struct msm_drm_private
*priv
= dev
->dev_private
;
420 struct msm_kms
*kms
= priv
->kms
;
422 kms
->funcs
->irq_uninstall(kms
);
425 static int msm_enable_vblank(struct drm_device
*dev
, int crtc_id
)
427 struct msm_drm_private
*priv
= dev
->dev_private
;
428 struct msm_kms
*kms
= priv
->kms
;
431 DBG("dev=%p, crtc=%d", dev
, crtc_id
);
432 return kms
->funcs
->enable_vblank(kms
, priv
->crtcs
[crtc_id
]);
435 static void msm_disable_vblank(struct drm_device
*dev
, int crtc_id
)
437 struct msm_drm_private
*priv
= dev
->dev_private
;
438 struct msm_kms
*kms
= priv
->kms
;
441 DBG("dev=%p, crtc=%d", dev
, crtc_id
);
442 kms
->funcs
->disable_vblank(kms
, priv
->crtcs
[crtc_id
]);
449 #ifdef CONFIG_DEBUG_FS
450 static int msm_gpu_show(struct drm_device
*dev
, struct seq_file
*m
)
452 struct msm_drm_private
*priv
= dev
->dev_private
;
453 struct msm_gpu
*gpu
= priv
->gpu
;
456 seq_printf(m
, "%s Status:\n", gpu
->name
);
457 gpu
->funcs
->show(gpu
, m
);
463 static int msm_gem_show(struct drm_device
*dev
, struct seq_file
*m
)
465 struct msm_drm_private
*priv
= dev
->dev_private
;
466 struct msm_gpu
*gpu
= priv
->gpu
;
469 seq_printf(m
, "Active Objects (%s):\n", gpu
->name
);
470 msm_gem_describe_objects(&gpu
->active_list
, m
);
473 seq_printf(m
, "Inactive Objects:\n");
474 msm_gem_describe_objects(&priv
->inactive_list
, m
);
479 static int msm_mm_show(struct drm_device
*dev
, struct seq_file
*m
)
481 return drm_mm_dump_table(m
, &dev
->vma_offset_manager
->vm_addr_space_mm
);
484 static int msm_fb_show(struct drm_device
*dev
, struct seq_file
*m
)
486 struct msm_drm_private
*priv
= dev
->dev_private
;
487 struct drm_framebuffer
*fb
, *fbdev_fb
= NULL
;
490 seq_printf(m
, "fbcon ");
491 fbdev_fb
= priv
->fbdev
->fb
;
492 msm_framebuffer_describe(fbdev_fb
, m
);
495 mutex_lock(&dev
->mode_config
.fb_lock
);
496 list_for_each_entry(fb
, &dev
->mode_config
.fb_list
, head
) {
500 seq_printf(m
, "user ");
501 msm_framebuffer_describe(fb
, m
);
503 mutex_unlock(&dev
->mode_config
.fb_lock
);
508 static int show_locked(struct seq_file
*m
, void *arg
)
510 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
511 struct drm_device
*dev
= node
->minor
->dev
;
512 int (*show
)(struct drm_device
*dev
, struct seq_file
*m
) =
513 node
->info_ent
->data
;
516 ret
= mutex_lock_interruptible(&dev
->struct_mutex
);
522 mutex_unlock(&dev
->struct_mutex
);
527 static struct drm_info_list msm_debugfs_list
[] = {
528 {"gpu", show_locked
, 0, msm_gpu_show
},
529 {"gem", show_locked
, 0, msm_gem_show
},
530 { "mm", show_locked
, 0, msm_mm_show
},
531 { "fb", show_locked
, 0, msm_fb_show
},
534 static int msm_debugfs_init(struct drm_minor
*minor
)
536 struct drm_device
*dev
= minor
->dev
;
539 ret
= drm_debugfs_create_files(msm_debugfs_list
,
540 ARRAY_SIZE(msm_debugfs_list
),
541 minor
->debugfs_root
, minor
);
544 dev_err(dev
->dev
, "could not install msm_debugfs_list\n");
551 static void msm_debugfs_cleanup(struct drm_minor
*minor
)
553 drm_debugfs_remove_files(msm_debugfs_list
,
554 ARRAY_SIZE(msm_debugfs_list
), minor
);
562 int msm_wait_fence_interruptable(struct drm_device
*dev
, uint32_t fence
,
563 struct timespec
*timeout
)
565 struct msm_drm_private
*priv
= dev
->dev_private
;
571 if (fence
> priv
->gpu
->submitted_fence
) {
572 DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
573 fence
, priv
->gpu
->submitted_fence
);
579 ret
= fence_completed(dev
, fence
) ? 0 : -EBUSY
;
581 unsigned long timeout_jiffies
= timespec_to_jiffies(timeout
);
582 unsigned long start_jiffies
= jiffies
;
583 unsigned long remaining_jiffies
;
585 if (time_after(start_jiffies
, timeout_jiffies
))
586 remaining_jiffies
= 0;
588 remaining_jiffies
= timeout_jiffies
- start_jiffies
;
590 ret
= wait_event_interruptible_timeout(priv
->fence_event
,
591 fence_completed(dev
, fence
),
595 DBG("timeout waiting for fence: %u (completed: %u)",
596 fence
, priv
->completed_fence
);
598 } else if (ret
!= -ERESTARTSYS
) {
606 /* called from workqueue */
607 void msm_update_fence(struct drm_device
*dev
, uint32_t fence
)
609 struct msm_drm_private
*priv
= dev
->dev_private
;
611 mutex_lock(&dev
->struct_mutex
);
612 priv
->completed_fence
= max(fence
, priv
->completed_fence
);
614 while (!list_empty(&priv
->fence_cbs
)) {
615 struct msm_fence_cb
*cb
;
617 cb
= list_first_entry(&priv
->fence_cbs
,
618 struct msm_fence_cb
, work
.entry
);
620 if (cb
->fence
> priv
->completed_fence
)
623 list_del_init(&cb
->work
.entry
);
624 queue_work(priv
->wq
, &cb
->work
);
627 mutex_unlock(&dev
->struct_mutex
);
629 wake_up_all(&priv
->fence_event
);
632 void __msm_fence_worker(struct work_struct
*work
)
634 struct msm_fence_cb
*cb
= container_of(work
, struct msm_fence_cb
, work
);
642 static int msm_ioctl_get_param(struct drm_device
*dev
, void *data
,
643 struct drm_file
*file
)
645 struct msm_drm_private
*priv
= dev
->dev_private
;
646 struct drm_msm_param
*args
= data
;
649 /* for now, we just have 3d pipe.. eventually this would need to
650 * be more clever to dispatch to appropriate gpu module:
652 if (args
->pipe
!= MSM_PIPE_3D0
)
660 return gpu
->funcs
->get_param(gpu
, args
->param
, &args
->value
);
663 static int msm_ioctl_gem_new(struct drm_device
*dev
, void *data
,
664 struct drm_file
*file
)
666 struct drm_msm_gem_new
*args
= data
;
668 if (args
->flags
& ~MSM_BO_FLAGS
) {
669 DRM_ERROR("invalid flags: %08x\n", args
->flags
);
673 return msm_gem_new_handle(dev
, file
, args
->size
,
674 args
->flags
, &args
->handle
);
677 #define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })
679 static int msm_ioctl_gem_cpu_prep(struct drm_device
*dev
, void *data
,
680 struct drm_file
*file
)
682 struct drm_msm_gem_cpu_prep
*args
= data
;
683 struct drm_gem_object
*obj
;
686 if (args
->op
& ~MSM_PREP_FLAGS
) {
687 DRM_ERROR("invalid op: %08x\n", args
->op
);
691 obj
= drm_gem_object_lookup(dev
, file
, args
->handle
);
695 ret
= msm_gem_cpu_prep(obj
, args
->op
, &TS(args
->timeout
));
697 drm_gem_object_unreference_unlocked(obj
);
702 static int msm_ioctl_gem_cpu_fini(struct drm_device
*dev
, void *data
,
703 struct drm_file
*file
)
705 struct drm_msm_gem_cpu_fini
*args
= data
;
706 struct drm_gem_object
*obj
;
709 obj
= drm_gem_object_lookup(dev
, file
, args
->handle
);
713 ret
= msm_gem_cpu_fini(obj
);
715 drm_gem_object_unreference_unlocked(obj
);
720 static int msm_ioctl_gem_info(struct drm_device
*dev
, void *data
,
721 struct drm_file
*file
)
723 struct drm_msm_gem_info
*args
= data
;
724 struct drm_gem_object
*obj
;
730 obj
= drm_gem_object_lookup(dev
, file
, args
->handle
);
734 args
->offset
= msm_gem_mmap_offset(obj
);
736 drm_gem_object_unreference_unlocked(obj
);
741 static int msm_ioctl_wait_fence(struct drm_device
*dev
, void *data
,
742 struct drm_file
*file
)
744 struct drm_msm_wait_fence
*args
= data
;
747 DRM_ERROR("invalid pad: %08x\n", args
->pad
);
751 return msm_wait_fence_interruptable(dev
, args
->fence
,
755 static const struct drm_ioctl_desc msm_ioctls
[] = {
756 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM
, msm_ioctl_get_param
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
757 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW
, msm_ioctl_gem_new
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
758 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO
, msm_ioctl_gem_info
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
759 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP
, msm_ioctl_gem_cpu_prep
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
760 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI
, msm_ioctl_gem_cpu_fini
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
761 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT
, msm_ioctl_gem_submit
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
762 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE
, msm_ioctl_wait_fence
, DRM_UNLOCKED
|DRM_AUTH
|DRM_RENDER_ALLOW
),
765 static const struct vm_operations_struct vm_ops
= {
766 .fault
= msm_gem_fault
,
767 .open
= drm_gem_vm_open
,
768 .close
= drm_gem_vm_close
,
771 static const struct file_operations fops
= {
772 .owner
= THIS_MODULE
,
774 .release
= drm_release
,
775 .unlocked_ioctl
= drm_ioctl
,
777 .compat_ioctl
= drm_compat_ioctl
,
782 .mmap
= msm_gem_mmap
,
785 static struct drm_driver msm_driver
= {
786 .driver_features
= DRIVER_HAVE_IRQ
|
792 .unload
= msm_unload
,
794 .preclose
= msm_preclose
,
795 .lastclose
= msm_lastclose
,
796 .irq_handler
= msm_irq
,
797 .irq_preinstall
= msm_irq_preinstall
,
798 .irq_postinstall
= msm_irq_postinstall
,
799 .irq_uninstall
= msm_irq_uninstall
,
800 .get_vblank_counter
= drm_vblank_count
,
801 .enable_vblank
= msm_enable_vblank
,
802 .disable_vblank
= msm_disable_vblank
,
803 .gem_free_object
= msm_gem_free_object
,
804 .gem_vm_ops
= &vm_ops
,
805 .dumb_create
= msm_gem_dumb_create
,
806 .dumb_map_offset
= msm_gem_dumb_map_offset
,
807 .dumb_destroy
= drm_gem_dumb_destroy
,
808 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
809 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
810 .gem_prime_export
= drm_gem_prime_export
,
811 .gem_prime_import
= drm_gem_prime_import
,
812 .gem_prime_pin
= msm_gem_prime_pin
,
813 .gem_prime_unpin
= msm_gem_prime_unpin
,
814 .gem_prime_get_sg_table
= msm_gem_prime_get_sg_table
,
815 .gem_prime_import_sg_table
= msm_gem_prime_import_sg_table
,
816 .gem_prime_vmap
= msm_gem_prime_vmap
,
817 .gem_prime_vunmap
= msm_gem_prime_vunmap
,
818 #ifdef CONFIG_DEBUG_FS
819 .debugfs_init
= msm_debugfs_init
,
820 .debugfs_cleanup
= msm_debugfs_cleanup
,
822 .ioctls
= msm_ioctls
,
823 .num_ioctls
= DRM_MSM_NUM_IOCTLS
,
826 .desc
= "MSM Snapdragon DRM",
832 #ifdef CONFIG_PM_SLEEP
833 static int msm_pm_suspend(struct device
*dev
)
835 struct drm_device
*ddev
= dev_get_drvdata(dev
);
837 drm_kms_helper_poll_disable(ddev
);
842 static int msm_pm_resume(struct device
*dev
)
844 struct drm_device
*ddev
= dev_get_drvdata(dev
);
846 drm_kms_helper_poll_enable(ddev
);
852 static const struct dev_pm_ops msm_pm_ops
= {
853 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend
, msm_pm_resume
)
857 * Componentized driver support:
861 /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
862 * (or probably any other).. so probably some room for some helpers
864 static int compare_of(struct device
*dev
, void *data
)
866 return dev
->of_node
== data
;
869 static int msm_drm_add_components(struct device
*master
, struct master
*m
)
871 struct device_node
*np
= master
->of_node
;
876 struct device_node
*node
;
878 node
= of_parse_phandle(np
, "connectors", i
);
882 ret
= component_master_add_child(m
, compare_of
, node
);
891 static int compare_dev(struct device
*dev
, void *data
)
896 static int msm_drm_add_components(struct device
*master
, struct master
*m
)
898 /* For non-DT case, it kinda sucks. We don't actually have a way
899 * to know whether or not we are waiting for certain devices (or if
900 * they are simply not present). But for non-DT we only need to
901 * care about apq8064/apq8060/etc (all mdp4/a3xx):
903 static const char *devnames
[] = {
904 "hdmi_msm.0", "kgsl-3d0.0",
908 DBG("Adding components..");
910 for (i
= 0; i
< ARRAY_SIZE(devnames
); i
++) {
914 dev
= bus_find_device_by_name(&platform_bus_type
,
917 dev_info(master
, "still waiting for %s\n", devnames
[i
]);
918 return -EPROBE_DEFER
;
921 ret
= component_master_add_child(m
, compare_dev
, dev
);
923 DBG("could not add child: %d", ret
);
932 static int msm_drm_bind(struct device
*dev
)
934 return drm_platform_init(&msm_driver
, to_platform_device(dev
));
937 static void msm_drm_unbind(struct device
*dev
)
939 drm_put_dev(platform_get_drvdata(to_platform_device(dev
)));
942 static const struct component_master_ops msm_drm_ops
= {
943 .add_components
= msm_drm_add_components
,
944 .bind
= msm_drm_bind
,
945 .unbind
= msm_drm_unbind
,
952 static int msm_pdev_probe(struct platform_device
*pdev
)
954 pdev
->dev
.coherent_dma_mask
= DMA_BIT_MASK(32);
955 return component_master_add(&pdev
->dev
, &msm_drm_ops
);
958 static int msm_pdev_remove(struct platform_device
*pdev
)
960 component_master_del(&pdev
->dev
, &msm_drm_ops
);
965 static const struct platform_device_id msm_id
[] = {
970 static const struct of_device_id dt_match
[] = {
971 { .compatible
= "qcom,mdss_mdp" },
974 MODULE_DEVICE_TABLE(of
, dt_match
);
976 static struct platform_driver msm_platform_driver
= {
977 .probe
= msm_pdev_probe
,
978 .remove
= msm_pdev_remove
,
980 .owner
= THIS_MODULE
,
982 .of_match_table
= dt_match
,
988 static int __init
msm_drm_register(void)
993 return platform_driver_register(&msm_platform_driver
);
996 static void __exit
msm_drm_unregister(void)
999 platform_driver_unregister(&msm_platform_driver
);
1004 module_init(msm_drm_register
);
1005 module_exit(msm_drm_unregister
);
1007 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1008 MODULE_DESCRIPTION("MSM DRM Driver");
1009 MODULE_LICENSE("GPL");