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 #ifdef CONFIG_DRM_MSM_FBDEV
25 struct msm_drm_private *priv = dev->dev_private;
27 drm_fb_helper_hotplug_event(priv->fbdev);
31 static const struct drm_mode_config_funcs mode_config_funcs = {
32 .fb_create = msm_framebuffer_create,
33 .output_poll_changed = msm_fb_output_poll_changed,
34 .atomic_check = msm_atomic_check,
35 .atomic_commit = msm_atomic_commit,
38 int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu)
40 struct msm_drm_private *priv = dev->dev_private;
41 int idx = priv->num_mmus++;
43 if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus)))
46 priv->mmus[idx] = mmu;
51 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
52 static bool reglog = false;
53 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
54 module_param(reglog, bool, 0600);
59 #ifdef CONFIG_DRM_MSM_FBDEV
60 static bool fbdev = true;
61 MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
62 module_param(fbdev, bool, 0600);
65 static char *vram = "16m";
66 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU");
67 module_param(vram, charp, 0);
73 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
81 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
83 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
86 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
87 return ERR_PTR(-EINVAL);
90 size = resource_size(res);
92 ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
94 dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
95 return ERR_PTR(-ENOMEM);
99 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
104 void msm_writel(u32 data, void __iomem *addr)
107 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
111 u32 msm_readl(const void __iomem *addr)
113 u32 val = readl(addr);
115 printk(KERN_ERR "IO:R %p %08x\n", addr, val);
123 static int msm_unload(struct drm_device *dev)
125 struct msm_drm_private *priv = dev->dev_private;
126 struct msm_kms *kms = priv->kms;
127 struct msm_gpu *gpu = priv->gpu;
129 drm_kms_helper_poll_fini(dev);
130 drm_mode_config_cleanup(dev);
131 drm_vblank_cleanup(dev);
133 pm_runtime_get_sync(dev->dev);
134 drm_irq_uninstall(dev);
135 pm_runtime_put_sync(dev->dev);
137 flush_workqueue(priv->wq);
138 destroy_workqueue(priv->wq);
141 pm_runtime_disable(dev->dev);
142 kms->funcs->destroy(kms);
146 mutex_lock(&dev->struct_mutex);
147 gpu->funcs->pm_suspend(gpu);
148 mutex_unlock(&dev->struct_mutex);
149 gpu->funcs->destroy(gpu);
152 if (priv->vram.paddr) {
153 DEFINE_DMA_ATTRS(attrs);
154 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
155 drm_mm_takedown(&priv->vram.mm);
156 dma_free_attrs(dev->dev, priv->vram.size, NULL,
157 priv->vram.paddr, &attrs);
160 component_unbind_all(dev->dev, dev);
162 dev->dev_private = NULL;
169 static int get_mdp_ver(struct platform_device *pdev)
172 static const struct of_device_id match_types[] = { {
173 .compatible = "qcom,mdss_mdp",
178 struct device *dev = &pdev->dev;
179 const struct of_device_id *match;
180 match = of_match_node(match_types, dev->of_node);
182 return (int)(unsigned long)match->data;
187 #include <linux/of_address.h>
189 static int msm_init_vram(struct drm_device *dev)
191 struct msm_drm_private *priv = dev->dev_private;
192 unsigned long size = 0;
196 /* In the device-tree world, we could have a 'memory-region'
197 * phandle, which gives us a link to our "vram". Allocating
198 * is all nicely abstracted behind the dma api, but we need
199 * to know the entire size to allocate it all in one go. There
201 * 1) device with no IOMMU, in which case we need exclusive
202 * access to a VRAM carveout big enough for all gpu
204 * 2) device with IOMMU, but where the bootloader puts up
205 * a splash screen. In this case, the VRAM carveout
206 * need only be large enough for fbdev fb. But we need
207 * exclusive access to the buffer to avoid the kernel
208 * using those pages for other purposes (which appears
209 * as corruption on screen before we have a chance to
210 * load and do initial modeset)
212 struct device_node *node;
214 node = of_parse_phandle(dev->dev->of_node, "memory-region", 0);
217 ret = of_address_to_resource(node, 0, &r);
220 size = r.end - r.start;
221 DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
225 /* if we have no IOMMU, then we need to use carveout allocator.
226 * Grab the entire CMA chunk carved out in early startup in
229 if (!iommu_present(&platform_bus_type)) {
230 DRM_INFO("using %s VRAM carveout\n", vram);
231 size = memparse(vram, NULL);
235 DEFINE_DMA_ATTRS(attrs);
238 priv->vram.size = size;
240 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
242 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
243 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
245 /* note that for no-kernel-mapping, the vaddr returned
246 * is bogus, but non-null if allocation succeeded:
248 p = dma_alloc_attrs(dev->dev, size,
249 &priv->vram.paddr, GFP_KERNEL, &attrs);
251 dev_err(dev->dev, "failed to allocate VRAM\n");
252 priv->vram.paddr = 0;
256 dev_info(dev->dev, "VRAM: %08x->%08x\n",
257 (uint32_t)priv->vram.paddr,
258 (uint32_t)(priv->vram.paddr + size));
264 static int msm_load(struct drm_device *dev, unsigned long flags)
266 struct platform_device *pdev = dev->platformdev;
267 struct msm_drm_private *priv;
271 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
273 dev_err(dev->dev, "failed to allocate private data\n");
277 dev->dev_private = priv;
279 priv->wq = alloc_ordered_workqueue("msm", 0);
280 init_waitqueue_head(&priv->fence_event);
281 init_waitqueue_head(&priv->pending_crtcs_event);
283 INIT_LIST_HEAD(&priv->inactive_list);
284 INIT_LIST_HEAD(&priv->fence_cbs);
286 drm_mode_config_init(dev);
288 platform_set_drvdata(pdev, dev);
290 /* Bind all our sub-components: */
291 ret = component_bind_all(dev->dev, dev);
295 ret = msm_init_vram(dev);
299 switch (get_mdp_ver(pdev)) {
301 kms = mdp4_kms_init(dev);
304 kms = mdp5_kms_init(dev);
307 kms = ERR_PTR(-ENODEV);
313 * NOTE: once we have GPU support, having no kms should not
314 * be considered fatal.. ideally we would still support gpu
315 * and (for example) use dmabuf/prime to share buffers with
316 * imx drm driver on iMX5
318 dev_err(dev->dev, "failed to load kms\n");
326 pm_runtime_enable(dev->dev);
327 ret = kms->funcs->hw_init(kms);
329 dev_err(dev->dev, "kms hw init failed: %d\n", ret);
334 dev->mode_config.min_width = 0;
335 dev->mode_config.min_height = 0;
336 dev->mode_config.max_width = 2048;
337 dev->mode_config.max_height = 2048;
338 dev->mode_config.funcs = &mode_config_funcs;
340 ret = drm_vblank_init(dev, priv->num_crtcs);
342 dev_err(dev->dev, "failed to initialize vblank\n");
346 pm_runtime_get_sync(dev->dev);
347 ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
348 pm_runtime_put_sync(dev->dev);
350 dev_err(dev->dev, "failed to install IRQ handler\n");
354 drm_mode_config_reset(dev);
356 #ifdef CONFIG_DRM_MSM_FBDEV
358 priv->fbdev = msm_fbdev_init(dev);
361 ret = msm_debugfs_late_init(dev);
365 drm_kms_helper_poll_init(dev);
374 static void load_gpu(struct drm_device *dev)
376 static DEFINE_MUTEX(init_lock);
377 struct msm_drm_private *priv = dev->dev_private;
379 mutex_lock(&init_lock);
382 priv->gpu = adreno_load_gpu(dev);
384 mutex_unlock(&init_lock);
387 static int msm_open(struct drm_device *dev, struct drm_file *file)
389 struct msm_file_private *ctx;
391 /* For now, load gpu on open.. to avoid the requirement of having
392 * firmware in the initrd.
396 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
400 file->driver_priv = ctx;
405 static void msm_preclose(struct drm_device *dev, struct drm_file *file)
407 struct msm_drm_private *priv = dev->dev_private;
408 struct msm_file_private *ctx = file->driver_priv;
409 struct msm_kms *kms = priv->kms;
412 kms->funcs->preclose(kms, file);
414 mutex_lock(&dev->struct_mutex);
415 if (ctx == priv->lastctx)
416 priv->lastctx = NULL;
417 mutex_unlock(&dev->struct_mutex);
422 static void msm_lastclose(struct drm_device *dev)
424 #ifdef CONFIG_DRM_MSM_FBDEV
425 struct msm_drm_private *priv = dev->dev_private;
427 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
431 static irqreturn_t msm_irq(int irq, void *arg)
433 struct drm_device *dev = arg;
434 struct msm_drm_private *priv = dev->dev_private;
435 struct msm_kms *kms = priv->kms;
437 return kms->funcs->irq(kms);
440 static void msm_irq_preinstall(struct drm_device *dev)
442 struct msm_drm_private *priv = dev->dev_private;
443 struct msm_kms *kms = priv->kms;
445 kms->funcs->irq_preinstall(kms);
448 static int msm_irq_postinstall(struct drm_device *dev)
450 struct msm_drm_private *priv = dev->dev_private;
451 struct msm_kms *kms = priv->kms;
453 return kms->funcs->irq_postinstall(kms);
456 static void msm_irq_uninstall(struct drm_device *dev)
458 struct msm_drm_private *priv = dev->dev_private;
459 struct msm_kms *kms = priv->kms;
461 kms->funcs->irq_uninstall(kms);
464 static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
466 struct msm_drm_private *priv = dev->dev_private;
467 struct msm_kms *kms = priv->kms;
470 DBG("dev=%p, crtc=%d", dev, crtc_id);
471 return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
474 static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
476 struct msm_drm_private *priv = dev->dev_private;
477 struct msm_kms *kms = priv->kms;
480 DBG("dev=%p, crtc=%d", dev, crtc_id);
481 kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
488 #ifdef CONFIG_DEBUG_FS
489 static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
491 struct msm_drm_private *priv = dev->dev_private;
492 struct msm_gpu *gpu = priv->gpu;
495 seq_printf(m, "%s Status:\n", gpu->name);
496 gpu->funcs->show(gpu, m);
502 static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
504 struct msm_drm_private *priv = dev->dev_private;
505 struct msm_gpu *gpu = priv->gpu;
508 seq_printf(m, "Active Objects (%s):\n", gpu->name);
509 msm_gem_describe_objects(&gpu->active_list, m);
512 seq_printf(m, "Inactive Objects:\n");
513 msm_gem_describe_objects(&priv->inactive_list, m);
518 static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
520 return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
523 static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
525 struct msm_drm_private *priv = dev->dev_private;
526 struct drm_framebuffer *fb, *fbdev_fb = NULL;
529 seq_printf(m, "fbcon ");
530 fbdev_fb = priv->fbdev->fb;
531 msm_framebuffer_describe(fbdev_fb, m);
534 mutex_lock(&dev->mode_config.fb_lock);
535 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
539 seq_printf(m, "user ");
540 msm_framebuffer_describe(fb, m);
542 mutex_unlock(&dev->mode_config.fb_lock);
547 static int show_locked(struct seq_file *m, void *arg)
549 struct drm_info_node *node = (struct drm_info_node *) m->private;
550 struct drm_device *dev = node->minor->dev;
551 int (*show)(struct drm_device *dev, struct seq_file *m) =
552 node->info_ent->data;
555 ret = mutex_lock_interruptible(&dev->struct_mutex);
561 mutex_unlock(&dev->struct_mutex);
566 static struct drm_info_list msm_debugfs_list[] = {
567 {"gpu", show_locked, 0, msm_gpu_show},
568 {"gem", show_locked, 0, msm_gem_show},
569 { "mm", show_locked, 0, msm_mm_show },
570 { "fb", show_locked, 0, msm_fb_show },
573 static int late_init_minor(struct drm_minor *minor)
580 ret = msm_rd_debugfs_init(minor);
582 dev_err(minor->dev->dev, "could not install rd debugfs\n");
586 ret = msm_perf_debugfs_init(minor);
588 dev_err(minor->dev->dev, "could not install perf debugfs\n");
595 int msm_debugfs_late_init(struct drm_device *dev)
598 ret = late_init_minor(dev->primary);
601 ret = late_init_minor(dev->render);
604 ret = late_init_minor(dev->control);
608 static int msm_debugfs_init(struct drm_minor *minor)
610 struct drm_device *dev = minor->dev;
613 ret = drm_debugfs_create_files(msm_debugfs_list,
614 ARRAY_SIZE(msm_debugfs_list),
615 minor->debugfs_root, minor);
618 dev_err(dev->dev, "could not install msm_debugfs_list\n");
625 static void msm_debugfs_cleanup(struct drm_minor *minor)
627 drm_debugfs_remove_files(msm_debugfs_list,
628 ARRAY_SIZE(msm_debugfs_list), minor);
629 if (!minor->dev->dev_private)
631 msm_rd_debugfs_cleanup(minor);
632 msm_perf_debugfs_cleanup(minor);
640 int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
641 struct timespec *timeout)
643 struct msm_drm_private *priv = dev->dev_private;
649 if (fence > priv->gpu->submitted_fence) {
650 DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
651 fence, priv->gpu->submitted_fence);
657 ret = fence_completed(dev, fence) ? 0 : -EBUSY;
659 unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
660 unsigned long start_jiffies = jiffies;
661 unsigned long remaining_jiffies;
663 if (time_after(start_jiffies, timeout_jiffies))
664 remaining_jiffies = 0;
666 remaining_jiffies = timeout_jiffies - start_jiffies;
668 ret = wait_event_interruptible_timeout(priv->fence_event,
669 fence_completed(dev, fence),
673 DBG("timeout waiting for fence: %u (completed: %u)",
674 fence, priv->completed_fence);
676 } else if (ret != -ERESTARTSYS) {
684 int msm_queue_fence_cb(struct drm_device *dev,
685 struct msm_fence_cb *cb, uint32_t fence)
687 struct msm_drm_private *priv = dev->dev_private;
690 mutex_lock(&dev->struct_mutex);
691 if (!list_empty(&cb->work.entry)) {
693 } else if (fence > priv->completed_fence) {
695 list_add_tail(&cb->work.entry, &priv->fence_cbs);
697 queue_work(priv->wq, &cb->work);
699 mutex_unlock(&dev->struct_mutex);
704 /* called from workqueue */
705 void msm_update_fence(struct drm_device *dev, uint32_t fence)
707 struct msm_drm_private *priv = dev->dev_private;
709 mutex_lock(&dev->struct_mutex);
710 priv->completed_fence = max(fence, priv->completed_fence);
712 while (!list_empty(&priv->fence_cbs)) {
713 struct msm_fence_cb *cb;
715 cb = list_first_entry(&priv->fence_cbs,
716 struct msm_fence_cb, work.entry);
718 if (cb->fence > priv->completed_fence)
721 list_del_init(&cb->work.entry);
722 queue_work(priv->wq, &cb->work);
725 mutex_unlock(&dev->struct_mutex);
727 wake_up_all(&priv->fence_event);
730 void __msm_fence_worker(struct work_struct *work)
732 struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
740 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
741 struct drm_file *file)
743 struct msm_drm_private *priv = dev->dev_private;
744 struct drm_msm_param *args = data;
747 /* for now, we just have 3d pipe.. eventually this would need to
748 * be more clever to dispatch to appropriate gpu module:
750 if (args->pipe != MSM_PIPE_3D0)
758 return gpu->funcs->get_param(gpu, args->param, &args->value);
761 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
762 struct drm_file *file)
764 struct drm_msm_gem_new *args = data;
766 if (args->flags & ~MSM_BO_FLAGS) {
767 DRM_ERROR("invalid flags: %08x\n", args->flags);
771 return msm_gem_new_handle(dev, file, args->size,
772 args->flags, &args->handle);
775 #define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })
777 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
778 struct drm_file *file)
780 struct drm_msm_gem_cpu_prep *args = data;
781 struct drm_gem_object *obj;
784 if (args->op & ~MSM_PREP_FLAGS) {
785 DRM_ERROR("invalid op: %08x\n", args->op);
789 obj = drm_gem_object_lookup(dev, file, args->handle);
793 ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout));
795 drm_gem_object_unreference_unlocked(obj);
800 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
801 struct drm_file *file)
803 struct drm_msm_gem_cpu_fini *args = data;
804 struct drm_gem_object *obj;
807 obj = drm_gem_object_lookup(dev, file, args->handle);
811 ret = msm_gem_cpu_fini(obj);
813 drm_gem_object_unreference_unlocked(obj);
818 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
819 struct drm_file *file)
821 struct drm_msm_gem_info *args = data;
822 struct drm_gem_object *obj;
828 obj = drm_gem_object_lookup(dev, file, args->handle);
832 args->offset = msm_gem_mmap_offset(obj);
834 drm_gem_object_unreference_unlocked(obj);
839 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
840 struct drm_file *file)
842 struct drm_msm_wait_fence *args = data;
845 DRM_ERROR("invalid pad: %08x\n", args->pad);
849 return msm_wait_fence_interruptable(dev, args->fence,
853 static const struct drm_ioctl_desc msm_ioctls[] = {
854 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
855 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
856 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
857 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
858 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
859 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
860 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
863 static const struct vm_operations_struct vm_ops = {
864 .fault = msm_gem_fault,
865 .open = drm_gem_vm_open,
866 .close = drm_gem_vm_close,
869 static const struct file_operations fops = {
870 .owner = THIS_MODULE,
872 .release = drm_release,
873 .unlocked_ioctl = drm_ioctl,
875 .compat_ioctl = drm_compat_ioctl,
880 .mmap = msm_gem_mmap,
883 static struct drm_driver msm_driver = {
884 .driver_features = DRIVER_HAVE_IRQ |
890 .unload = msm_unload,
892 .preclose = msm_preclose,
893 .lastclose = msm_lastclose,
894 .set_busid = drm_platform_set_busid,
895 .irq_handler = msm_irq,
896 .irq_preinstall = msm_irq_preinstall,
897 .irq_postinstall = msm_irq_postinstall,
898 .irq_uninstall = msm_irq_uninstall,
899 .get_vblank_counter = drm_vblank_count,
900 .enable_vblank = msm_enable_vblank,
901 .disable_vblank = msm_disable_vblank,
902 .gem_free_object = msm_gem_free_object,
903 .gem_vm_ops = &vm_ops,
904 .dumb_create = msm_gem_dumb_create,
905 .dumb_map_offset = msm_gem_dumb_map_offset,
906 .dumb_destroy = drm_gem_dumb_destroy,
907 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
908 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
909 .gem_prime_export = drm_gem_prime_export,
910 .gem_prime_import = drm_gem_prime_import,
911 .gem_prime_pin = msm_gem_prime_pin,
912 .gem_prime_unpin = msm_gem_prime_unpin,
913 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
914 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
915 .gem_prime_vmap = msm_gem_prime_vmap,
916 .gem_prime_vunmap = msm_gem_prime_vunmap,
917 .gem_prime_mmap = msm_gem_prime_mmap,
918 #ifdef CONFIG_DEBUG_FS
919 .debugfs_init = msm_debugfs_init,
920 .debugfs_cleanup = msm_debugfs_cleanup,
922 .ioctls = msm_ioctls,
923 .num_ioctls = DRM_MSM_NUM_IOCTLS,
926 .desc = "MSM Snapdragon DRM",
932 #ifdef CONFIG_PM_SLEEP
933 static int msm_pm_suspend(struct device *dev)
935 struct drm_device *ddev = dev_get_drvdata(dev);
937 drm_kms_helper_poll_disable(ddev);
942 static int msm_pm_resume(struct device *dev)
944 struct drm_device *ddev = dev_get_drvdata(dev);
946 drm_kms_helper_poll_enable(ddev);
952 static const struct dev_pm_ops msm_pm_ops = {
953 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
957 * Componentized driver support:
961 /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
962 * (or probably any other).. so probably some room for some helpers
964 static int compare_of(struct device *dev, void *data)
966 return dev->of_node == data;
969 static int add_components(struct device *dev, struct component_match **matchptr,
972 struct device_node *np = dev->of_node;
976 struct device_node *node;
978 node = of_parse_phandle(np, name, i);
982 component_match_add(dev, matchptr, compare_of, node);
988 static int compare_dev(struct device *dev, void *data)
994 static int msm_drm_bind(struct device *dev)
996 return drm_platform_init(&msm_driver, to_platform_device(dev));
999 static void msm_drm_unbind(struct device *dev)
1001 drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
1004 static const struct component_master_ops msm_drm_ops = {
1005 .bind = msm_drm_bind,
1006 .unbind = msm_drm_unbind,
1013 static int msm_pdev_probe(struct platform_device *pdev)
1015 struct component_match *match = NULL;
1017 add_components(&pdev->dev, &match, "connectors");
1018 add_components(&pdev->dev, &match, "gpus");
1020 /* For non-DT case, it kinda sucks. We don't actually have a way
1021 * to know whether or not we are waiting for certain devices (or if
1022 * they are simply not present). But for non-DT we only need to
1023 * care about apq8064/apq8060/etc (all mdp4/a3xx):
1025 static const char *devnames[] = {
1026 "hdmi_msm.0", "kgsl-3d0.0",
1030 DBG("Adding components..");
1032 for (i = 0; i < ARRAY_SIZE(devnames); i++) {
1035 dev = bus_find_device_by_name(&platform_bus_type,
1038 dev_info(&pdev->dev, "still waiting for %s\n", devnames[i]);
1039 return -EPROBE_DEFER;
1042 component_match_add(&pdev->dev, &match, compare_dev, dev);
1046 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
1047 return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
1050 static int msm_pdev_remove(struct platform_device *pdev)
1052 component_master_del(&pdev->dev, &msm_drm_ops);
1057 static const struct platform_device_id msm_id[] = {
1062 static const struct of_device_id dt_match[] = {
1063 { .compatible = "qcom,mdp" }, /* mdp4 */
1064 { .compatible = "qcom,mdss_mdp" }, /* mdp5 */
1067 MODULE_DEVICE_TABLE(of, dt_match);
1069 static struct platform_driver msm_platform_driver = {
1070 .probe = msm_pdev_probe,
1071 .remove = msm_pdev_remove,
1074 .of_match_table = dt_match,
1080 static int __init msm_drm_register(void)
1087 return platform_driver_register(&msm_platform_driver);
1090 static void __exit msm_drm_unregister(void)
1093 platform_driver_unregister(&msm_platform_driver);
1095 adreno_unregister();
1096 msm_edp_unregister();
1097 msm_dsi_unregister();
1100 module_init(msm_drm_register);
1101 module_exit(msm_drm_unregister);
1103 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1104 MODULE_DESCRIPTION("MSM DRM Driver");
1105 MODULE_LICENSE("GPL");