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,
32 .atomic_check = drm_atomic_helper_check,
33 .atomic_commit = msm_atomic_commit,
36 int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu)
38 struct msm_drm_private *priv = dev->dev_private;
39 int idx = priv->num_mmus++;
41 if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus)))
44 priv->mmus[idx] = mmu;
49 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
50 static bool reglog = false;
51 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
52 module_param(reglog, bool, 0600);
57 static char *vram = "16m";
58 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU");
59 module_param(vram, charp, 0);
65 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
73 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
75 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
78 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
79 return ERR_PTR(-EINVAL);
82 size = resource_size(res);
84 ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
86 dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
87 return ERR_PTR(-ENOMEM);
91 printk(KERN_DEBUG "IO:region %s %08x %08lx\n", dbgname, (u32)ptr, size);
96 void msm_writel(u32 data, void __iomem *addr)
99 printk(KERN_DEBUG "IO:W %08x %08x\n", (u32)addr, data);
103 u32 msm_readl(const void __iomem *addr)
105 u32 val = readl(addr);
107 printk(KERN_ERR "IO:R %08x %08x\n", (u32)addr, val);
115 static int msm_unload(struct drm_device *dev)
117 struct msm_drm_private *priv = dev->dev_private;
118 struct msm_kms *kms = priv->kms;
119 struct msm_gpu *gpu = priv->gpu;
121 drm_kms_helper_poll_fini(dev);
122 drm_mode_config_cleanup(dev);
123 drm_vblank_cleanup(dev);
125 pm_runtime_get_sync(dev->dev);
126 drm_irq_uninstall(dev);
127 pm_runtime_put_sync(dev->dev);
129 flush_workqueue(priv->wq);
130 destroy_workqueue(priv->wq);
133 pm_runtime_disable(dev->dev);
134 kms->funcs->destroy(kms);
138 mutex_lock(&dev->struct_mutex);
139 gpu->funcs->pm_suspend(gpu);
140 gpu->funcs->destroy(gpu);
141 mutex_unlock(&dev->struct_mutex);
144 if (priv->vram.paddr) {
145 DEFINE_DMA_ATTRS(attrs);
146 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
147 drm_mm_takedown(&priv->vram.mm);
148 dma_free_attrs(dev->dev, priv->vram.size, NULL,
149 priv->vram.paddr, &attrs);
152 component_unbind_all(dev->dev, dev);
154 dev->dev_private = NULL;
161 static int get_mdp_ver(struct platform_device *pdev)
164 static const struct of_device_id match_types[] = { {
165 .compatible = "qcom,mdss_mdp",
170 struct device *dev = &pdev->dev;
171 const struct of_device_id *match;
172 match = of_match_node(match_types, dev->of_node);
174 return (int)match->data;
179 static int msm_load(struct drm_device *dev, unsigned long flags)
181 struct platform_device *pdev = dev->platformdev;
182 struct msm_drm_private *priv;
186 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
188 dev_err(dev->dev, "failed to allocate private data\n");
192 dev->dev_private = priv;
194 priv->wq = alloc_ordered_workqueue("msm", 0);
195 init_waitqueue_head(&priv->fence_event);
197 INIT_LIST_HEAD(&priv->inactive_list);
198 INIT_LIST_HEAD(&priv->fence_cbs);
200 drm_mode_config_init(dev);
202 /* if we have no IOMMU, then we need to use carveout allocator.
203 * Grab the entire CMA chunk carved out in early startup in
206 if (!iommu_present(&platform_bus_type)) {
207 DEFINE_DMA_ATTRS(attrs);
211 DBG("using %s VRAM carveout", vram);
212 size = memparse(vram, NULL);
213 priv->vram.size = size;
215 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
217 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
218 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
220 /* note that for no-kernel-mapping, the vaddr returned
221 * is bogus, but non-null if allocation succeeded:
223 p = dma_alloc_attrs(dev->dev, size,
224 &priv->vram.paddr, GFP_KERNEL, &attrs);
226 dev_err(dev->dev, "failed to allocate VRAM\n");
227 priv->vram.paddr = 0;
232 dev_info(dev->dev, "VRAM: %08x->%08x\n",
233 (uint32_t)priv->vram.paddr,
234 (uint32_t)(priv->vram.paddr + size));
237 platform_set_drvdata(pdev, dev);
239 /* Bind all our sub-components: */
240 ret = component_bind_all(dev->dev, dev);
244 switch (get_mdp_ver(pdev)) {
246 kms = mdp4_kms_init(dev);
249 kms = mdp5_kms_init(dev);
252 kms = ERR_PTR(-ENODEV);
258 * NOTE: once we have GPU support, having no kms should not
259 * be considered fatal.. ideally we would still support gpu
260 * and (for example) use dmabuf/prime to share buffers with
261 * imx drm driver on iMX5
263 dev_err(dev->dev, "failed to load kms\n");
271 pm_runtime_enable(dev->dev);
272 ret = kms->funcs->hw_init(kms);
274 dev_err(dev->dev, "kms hw init failed: %d\n", ret);
279 dev->mode_config.min_width = 0;
280 dev->mode_config.min_height = 0;
281 dev->mode_config.max_width = 2048;
282 dev->mode_config.max_height = 2048;
283 dev->mode_config.funcs = &mode_config_funcs;
285 ret = drm_vblank_init(dev, priv->num_crtcs);
287 dev_err(dev->dev, "failed to initialize vblank\n");
291 pm_runtime_get_sync(dev->dev);
292 ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
293 pm_runtime_put_sync(dev->dev);
295 dev_err(dev->dev, "failed to install IRQ handler\n");
299 drm_mode_config_reset(dev);
301 #ifdef CONFIG_DRM_MSM_FBDEV
302 priv->fbdev = msm_fbdev_init(dev);
305 ret = msm_debugfs_late_init(dev);
309 drm_kms_helper_poll_init(dev);
318 static void load_gpu(struct drm_device *dev)
320 static DEFINE_MUTEX(init_lock);
321 struct msm_drm_private *priv = dev->dev_private;
323 mutex_lock(&init_lock);
326 priv->gpu = adreno_load_gpu(dev);
328 mutex_unlock(&init_lock);
331 static int msm_open(struct drm_device *dev, struct drm_file *file)
333 struct msm_file_private *ctx;
335 /* For now, load gpu on open.. to avoid the requirement of having
336 * firmware in the initrd.
340 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
344 file->driver_priv = ctx;
349 static void msm_preclose(struct drm_device *dev, struct drm_file *file)
351 struct msm_drm_private *priv = dev->dev_private;
352 struct msm_file_private *ctx = file->driver_priv;
353 struct msm_kms *kms = priv->kms;
356 kms->funcs->preclose(kms, file);
358 mutex_lock(&dev->struct_mutex);
359 if (ctx == priv->lastctx)
360 priv->lastctx = NULL;
361 mutex_unlock(&dev->struct_mutex);
366 static void msm_lastclose(struct drm_device *dev)
368 struct msm_drm_private *priv = dev->dev_private;
370 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
373 static irqreturn_t msm_irq(int irq, void *arg)
375 struct drm_device *dev = arg;
376 struct msm_drm_private *priv = dev->dev_private;
377 struct msm_kms *kms = priv->kms;
379 return kms->funcs->irq(kms);
382 static void msm_irq_preinstall(struct drm_device *dev)
384 struct msm_drm_private *priv = dev->dev_private;
385 struct msm_kms *kms = priv->kms;
387 kms->funcs->irq_preinstall(kms);
390 static int msm_irq_postinstall(struct drm_device *dev)
392 struct msm_drm_private *priv = dev->dev_private;
393 struct msm_kms *kms = priv->kms;
395 return kms->funcs->irq_postinstall(kms);
398 static void msm_irq_uninstall(struct drm_device *dev)
400 struct msm_drm_private *priv = dev->dev_private;
401 struct msm_kms *kms = priv->kms;
403 kms->funcs->irq_uninstall(kms);
406 static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
408 struct msm_drm_private *priv = dev->dev_private;
409 struct msm_kms *kms = priv->kms;
412 DBG("dev=%p, crtc=%d", dev, crtc_id);
413 return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
416 static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
418 struct msm_drm_private *priv = dev->dev_private;
419 struct msm_kms *kms = priv->kms;
422 DBG("dev=%p, crtc=%d", dev, crtc_id);
423 kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
430 #ifdef CONFIG_DEBUG_FS
431 static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
433 struct msm_drm_private *priv = dev->dev_private;
434 struct msm_gpu *gpu = priv->gpu;
437 seq_printf(m, "%s Status:\n", gpu->name);
438 gpu->funcs->show(gpu, m);
444 static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
446 struct msm_drm_private *priv = dev->dev_private;
447 struct msm_gpu *gpu = priv->gpu;
450 seq_printf(m, "Active Objects (%s):\n", gpu->name);
451 msm_gem_describe_objects(&gpu->active_list, m);
454 seq_printf(m, "Inactive Objects:\n");
455 msm_gem_describe_objects(&priv->inactive_list, m);
460 static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
462 return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
465 static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
467 struct msm_drm_private *priv = dev->dev_private;
468 struct drm_framebuffer *fb, *fbdev_fb = NULL;
471 seq_printf(m, "fbcon ");
472 fbdev_fb = priv->fbdev->fb;
473 msm_framebuffer_describe(fbdev_fb, m);
476 mutex_lock(&dev->mode_config.fb_lock);
477 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
481 seq_printf(m, "user ");
482 msm_framebuffer_describe(fb, m);
484 mutex_unlock(&dev->mode_config.fb_lock);
489 static int show_locked(struct seq_file *m, void *arg)
491 struct drm_info_node *node = (struct drm_info_node *) m->private;
492 struct drm_device *dev = node->minor->dev;
493 int (*show)(struct drm_device *dev, struct seq_file *m) =
494 node->info_ent->data;
497 ret = mutex_lock_interruptible(&dev->struct_mutex);
503 mutex_unlock(&dev->struct_mutex);
508 static struct drm_info_list msm_debugfs_list[] = {
509 {"gpu", show_locked, 0, msm_gpu_show},
510 {"gem", show_locked, 0, msm_gem_show},
511 { "mm", show_locked, 0, msm_mm_show },
512 { "fb", show_locked, 0, msm_fb_show },
515 static int late_init_minor(struct drm_minor *minor)
522 ret = msm_rd_debugfs_init(minor);
524 dev_err(minor->dev->dev, "could not install rd debugfs\n");
528 ret = msm_perf_debugfs_init(minor);
530 dev_err(minor->dev->dev, "could not install perf debugfs\n");
537 int msm_debugfs_late_init(struct drm_device *dev)
540 ret = late_init_minor(dev->primary);
543 ret = late_init_minor(dev->render);
546 ret = late_init_minor(dev->control);
550 static int msm_debugfs_init(struct drm_minor *minor)
552 struct drm_device *dev = minor->dev;
555 ret = drm_debugfs_create_files(msm_debugfs_list,
556 ARRAY_SIZE(msm_debugfs_list),
557 minor->debugfs_root, minor);
560 dev_err(dev->dev, "could not install msm_debugfs_list\n");
567 static void msm_debugfs_cleanup(struct drm_minor *minor)
569 drm_debugfs_remove_files(msm_debugfs_list,
570 ARRAY_SIZE(msm_debugfs_list), minor);
571 if (!minor->dev->dev_private)
573 msm_rd_debugfs_cleanup(minor);
574 msm_perf_debugfs_cleanup(minor);
582 int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
583 struct timespec *timeout)
585 struct msm_drm_private *priv = dev->dev_private;
591 if (fence > priv->gpu->submitted_fence) {
592 DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
593 fence, priv->gpu->submitted_fence);
599 ret = fence_completed(dev, fence) ? 0 : -EBUSY;
601 unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
602 unsigned long start_jiffies = jiffies;
603 unsigned long remaining_jiffies;
605 if (time_after(start_jiffies, timeout_jiffies))
606 remaining_jiffies = 0;
608 remaining_jiffies = timeout_jiffies - start_jiffies;
610 ret = wait_event_interruptible_timeout(priv->fence_event,
611 fence_completed(dev, fence),
615 DBG("timeout waiting for fence: %u (completed: %u)",
616 fence, priv->completed_fence);
618 } else if (ret != -ERESTARTSYS) {
626 int msm_queue_fence_cb(struct drm_device *dev,
627 struct msm_fence_cb *cb, uint32_t fence)
629 struct msm_drm_private *priv = dev->dev_private;
632 mutex_lock(&dev->struct_mutex);
633 if (!list_empty(&cb->work.entry)) {
635 } else if (fence > priv->completed_fence) {
637 list_add_tail(&cb->work.entry, &priv->fence_cbs);
639 queue_work(priv->wq, &cb->work);
641 mutex_unlock(&dev->struct_mutex);
646 /* called from workqueue */
647 void msm_update_fence(struct drm_device *dev, uint32_t fence)
649 struct msm_drm_private *priv = dev->dev_private;
651 mutex_lock(&dev->struct_mutex);
652 priv->completed_fence = max(fence, priv->completed_fence);
654 while (!list_empty(&priv->fence_cbs)) {
655 struct msm_fence_cb *cb;
657 cb = list_first_entry(&priv->fence_cbs,
658 struct msm_fence_cb, work.entry);
660 if (cb->fence > priv->completed_fence)
663 list_del_init(&cb->work.entry);
664 queue_work(priv->wq, &cb->work);
667 mutex_unlock(&dev->struct_mutex);
669 wake_up_all(&priv->fence_event);
672 void __msm_fence_worker(struct work_struct *work)
674 struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
682 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
683 struct drm_file *file)
685 struct msm_drm_private *priv = dev->dev_private;
686 struct drm_msm_param *args = data;
689 /* for now, we just have 3d pipe.. eventually this would need to
690 * be more clever to dispatch to appropriate gpu module:
692 if (args->pipe != MSM_PIPE_3D0)
700 return gpu->funcs->get_param(gpu, args->param, &args->value);
703 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
704 struct drm_file *file)
706 struct drm_msm_gem_new *args = data;
708 if (args->flags & ~MSM_BO_FLAGS) {
709 DRM_ERROR("invalid flags: %08x\n", args->flags);
713 return msm_gem_new_handle(dev, file, args->size,
714 args->flags, &args->handle);
717 #define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })
719 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
720 struct drm_file *file)
722 struct drm_msm_gem_cpu_prep *args = data;
723 struct drm_gem_object *obj;
726 if (args->op & ~MSM_PREP_FLAGS) {
727 DRM_ERROR("invalid op: %08x\n", args->op);
731 obj = drm_gem_object_lookup(dev, file, args->handle);
735 ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout));
737 drm_gem_object_unreference_unlocked(obj);
742 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
743 struct drm_file *file)
745 struct drm_msm_gem_cpu_fini *args = data;
746 struct drm_gem_object *obj;
749 obj = drm_gem_object_lookup(dev, file, args->handle);
753 ret = msm_gem_cpu_fini(obj);
755 drm_gem_object_unreference_unlocked(obj);
760 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
761 struct drm_file *file)
763 struct drm_msm_gem_info *args = data;
764 struct drm_gem_object *obj;
770 obj = drm_gem_object_lookup(dev, file, args->handle);
774 args->offset = msm_gem_mmap_offset(obj);
776 drm_gem_object_unreference_unlocked(obj);
781 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
782 struct drm_file *file)
784 struct drm_msm_wait_fence *args = data;
787 DRM_ERROR("invalid pad: %08x\n", args->pad);
791 return msm_wait_fence_interruptable(dev, args->fence,
795 static const struct drm_ioctl_desc msm_ioctls[] = {
796 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
797 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
798 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
799 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
800 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
801 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
802 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
805 static const struct vm_operations_struct vm_ops = {
806 .fault = msm_gem_fault,
807 .open = drm_gem_vm_open,
808 .close = drm_gem_vm_close,
811 static const struct file_operations fops = {
812 .owner = THIS_MODULE,
814 .release = drm_release,
815 .unlocked_ioctl = drm_ioctl,
817 .compat_ioctl = drm_compat_ioctl,
822 .mmap = msm_gem_mmap,
825 static struct drm_driver msm_driver = {
826 .driver_features = DRIVER_HAVE_IRQ |
832 .unload = msm_unload,
834 .preclose = msm_preclose,
835 .lastclose = msm_lastclose,
836 .set_busid = drm_platform_set_busid,
837 .irq_handler = msm_irq,
838 .irq_preinstall = msm_irq_preinstall,
839 .irq_postinstall = msm_irq_postinstall,
840 .irq_uninstall = msm_irq_uninstall,
841 .get_vblank_counter = drm_vblank_count,
842 .enable_vblank = msm_enable_vblank,
843 .disable_vblank = msm_disable_vblank,
844 .gem_free_object = msm_gem_free_object,
845 .gem_vm_ops = &vm_ops,
846 .dumb_create = msm_gem_dumb_create,
847 .dumb_map_offset = msm_gem_dumb_map_offset,
848 .dumb_destroy = drm_gem_dumb_destroy,
849 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
850 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
851 .gem_prime_export = drm_gem_prime_export,
852 .gem_prime_import = drm_gem_prime_import,
853 .gem_prime_pin = msm_gem_prime_pin,
854 .gem_prime_unpin = msm_gem_prime_unpin,
855 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
856 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
857 .gem_prime_vmap = msm_gem_prime_vmap,
858 .gem_prime_vunmap = msm_gem_prime_vunmap,
859 .gem_prime_mmap = msm_gem_prime_mmap,
860 #ifdef CONFIG_DEBUG_FS
861 .debugfs_init = msm_debugfs_init,
862 .debugfs_cleanup = msm_debugfs_cleanup,
864 .ioctls = msm_ioctls,
865 .num_ioctls = DRM_MSM_NUM_IOCTLS,
868 .desc = "MSM Snapdragon DRM",
874 #ifdef CONFIG_PM_SLEEP
875 static int msm_pm_suspend(struct device *dev)
877 struct drm_device *ddev = dev_get_drvdata(dev);
879 drm_kms_helper_poll_disable(ddev);
884 static int msm_pm_resume(struct device *dev)
886 struct drm_device *ddev = dev_get_drvdata(dev);
888 drm_kms_helper_poll_enable(ddev);
894 static const struct dev_pm_ops msm_pm_ops = {
895 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
899 * Componentized driver support:
903 /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
904 * (or probably any other).. so probably some room for some helpers
906 static int compare_of(struct device *dev, void *data)
908 return dev->of_node == data;
911 static int add_components(struct device *dev, struct component_match **matchptr,
914 struct device_node *np = dev->of_node;
918 struct device_node *node;
920 node = of_parse_phandle(np, name, i);
924 component_match_add(dev, matchptr, compare_of, node);
930 static int compare_dev(struct device *dev, void *data)
936 static int msm_drm_bind(struct device *dev)
938 return drm_platform_init(&msm_driver, to_platform_device(dev));
941 static void msm_drm_unbind(struct device *dev)
943 drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
946 static const struct component_master_ops msm_drm_ops = {
947 .bind = msm_drm_bind,
948 .unbind = msm_drm_unbind,
955 static int msm_pdev_probe(struct platform_device *pdev)
957 struct component_match *match = NULL;
959 add_components(&pdev->dev, &match, "connectors");
960 add_components(&pdev->dev, &match, "gpus");
962 /* For non-DT case, it kinda sucks. We don't actually have a way
963 * to know whether or not we are waiting for certain devices (or if
964 * they are simply not present). But for non-DT we only need to
965 * care about apq8064/apq8060/etc (all mdp4/a3xx):
967 static const char *devnames[] = {
968 "hdmi_msm.0", "kgsl-3d0.0",
972 DBG("Adding components..");
974 for (i = 0; i < ARRAY_SIZE(devnames); i++) {
977 dev = bus_find_device_by_name(&platform_bus_type,
980 dev_info(&pdev->dev, "still waiting for %s\n", devnames[i]);
981 return -EPROBE_DEFER;
984 component_match_add(&pdev->dev, &match, compare_dev, dev);
988 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
989 return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
992 static int msm_pdev_remove(struct platform_device *pdev)
994 component_master_del(&pdev->dev, &msm_drm_ops);
999 static const struct platform_device_id msm_id[] = {
1004 static const struct of_device_id dt_match[] = {
1005 { .compatible = "qcom,mdp" }, /* mdp4 */
1006 { .compatible = "qcom,mdss_mdp" }, /* mdp5 */
1009 MODULE_DEVICE_TABLE(of, dt_match);
1011 static struct platform_driver msm_platform_driver = {
1012 .probe = msm_pdev_probe,
1013 .remove = msm_pdev_remove,
1016 .of_match_table = dt_match,
1022 static int __init msm_drm_register(void)
1027 return platform_driver_register(&msm_platform_driver);
1030 static void __exit msm_drm_unregister(void)
1033 platform_driver_unregister(&msm_platform_driver);
1035 adreno_unregister();
1038 module_init(msm_drm_register);
1039 module_exit(msm_drm_unregister);
1041 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1042 MODULE_DESCRIPTION("MSM DRM Driver");
1043 MODULE_LICENSE("GPL");