2 * Copyright (C) 2013 Red Hat
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/>.
18 #include <drm/drm_of.h>
21 #include "msm_debugfs.h"
22 #include "msm_fence.h"
29 * - 1.0.0 - initial interface
30 * - 1.1.0 - adds madvise, and support for submits with > 4 cmd buffers
31 * - 1.2.0 - adds explicit fence support for submit ioctl
32 * - 1.3.0 - adds GMEM_BASE + NR_RINGS params, SUBMITQUEUE_NEW +
33 * SUBMITQUEUE_CLOSE ioctls, and MSM_INFO_IOVA flag for
36 #define MSM_VERSION_MAJOR 1
37 #define MSM_VERSION_MINOR 3
38 #define MSM_VERSION_PATCHLEVEL 0
40 static const struct drm_mode_config_funcs mode_config_funcs = {
41 .fb_create = msm_framebuffer_create,
42 .output_poll_changed = drm_fb_helper_output_poll_changed,
43 .atomic_check = drm_atomic_helper_check,
44 .atomic_commit = msm_atomic_commit,
45 .atomic_state_alloc = msm_atomic_state_alloc,
46 .atomic_state_clear = msm_atomic_state_clear,
47 .atomic_state_free = msm_atomic_state_free,
50 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
51 static bool reglog = false;
52 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
53 module_param(reglog, bool, 0600);
58 #ifdef CONFIG_DRM_FBDEV_EMULATION
59 static bool fbdev = true;
60 MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
61 module_param(fbdev, bool, 0600);
64 static char *vram = "16m";
65 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
66 module_param(vram, charp, 0);
68 bool dumpstate = false;
69 MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
70 module_param(dumpstate, bool, 0600);
72 static bool modeset = true;
73 MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (1=on (default), 0=disable)");
74 module_param(modeset, bool, 0600);
80 struct clk *msm_clk_get(struct platform_device *pdev, const char *name)
85 clk = devm_clk_get(&pdev->dev, name);
86 if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
89 snprintf(name2, sizeof(name2), "%s_clk", name);
91 clk = devm_clk_get(&pdev->dev, name2);
93 dev_warn(&pdev->dev, "Using legacy clk name binding. Use "
94 "\"%s\" instead of \"%s\"\n", name, name2);
99 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
102 struct resource *res;
107 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
109 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
112 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
113 return ERR_PTR(-EINVAL);
116 size = resource_size(res);
118 ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
120 dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
121 return ERR_PTR(-ENOMEM);
125 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
130 void msm_writel(u32 data, void __iomem *addr)
133 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
137 u32 msm_readl(const void __iomem *addr)
139 u32 val = readl(addr);
141 pr_err("IO:R %p %08x\n", addr, val);
145 struct vblank_event {
146 struct list_head node;
151 static void vblank_ctrl_worker(struct work_struct *work)
153 struct msm_vblank_ctrl *vbl_ctrl = container_of(work,
154 struct msm_vblank_ctrl, work);
155 struct msm_drm_private *priv = container_of(vbl_ctrl,
156 struct msm_drm_private, vblank_ctrl);
157 struct msm_kms *kms = priv->kms;
158 struct vblank_event *vbl_ev, *tmp;
161 spin_lock_irqsave(&vbl_ctrl->lock, flags);
162 list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
163 list_del(&vbl_ev->node);
164 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
167 kms->funcs->enable_vblank(kms,
168 priv->crtcs[vbl_ev->crtc_id]);
170 kms->funcs->disable_vblank(kms,
171 priv->crtcs[vbl_ev->crtc_id]);
175 spin_lock_irqsave(&vbl_ctrl->lock, flags);
178 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
181 static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
182 int crtc_id, bool enable)
184 struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
185 struct vblank_event *vbl_ev;
188 vbl_ev = kzalloc(sizeof(*vbl_ev), GFP_ATOMIC);
192 vbl_ev->crtc_id = crtc_id;
193 vbl_ev->enable = enable;
195 spin_lock_irqsave(&vbl_ctrl->lock, flags);
196 list_add_tail(&vbl_ev->node, &vbl_ctrl->event_list);
197 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
199 queue_work(priv->wq, &vbl_ctrl->work);
204 static int msm_drm_uninit(struct device *dev)
206 struct platform_device *pdev = to_platform_device(dev);
207 struct drm_device *ddev = platform_get_drvdata(pdev);
208 struct msm_drm_private *priv = ddev->dev_private;
209 struct msm_kms *kms = priv->kms;
210 struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
211 struct vblank_event *vbl_ev, *tmp;
213 /* We must cancel and cleanup any pending vblank enable/disable
214 * work before drm_irq_uninstall() to avoid work re-enabling an
215 * irq after uninstall has disabled it.
217 cancel_work_sync(&vbl_ctrl->work);
218 list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
219 list_del(&vbl_ev->node);
223 msm_gem_shrinker_cleanup(ddev);
225 drm_kms_helper_poll_fini(ddev);
227 drm_dev_unregister(ddev);
229 msm_perf_debugfs_cleanup(priv);
230 msm_rd_debugfs_cleanup(priv);
232 #ifdef CONFIG_DRM_FBDEV_EMULATION
233 if (fbdev && priv->fbdev)
234 msm_fbdev_free(ddev);
236 drm_mode_config_cleanup(ddev);
238 pm_runtime_get_sync(dev);
239 drm_irq_uninstall(ddev);
240 pm_runtime_put_sync(dev);
242 flush_workqueue(priv->wq);
243 destroy_workqueue(priv->wq);
245 flush_workqueue(priv->atomic_wq);
246 destroy_workqueue(priv->atomic_wq);
248 if (kms && kms->funcs)
249 kms->funcs->destroy(kms);
251 if (priv->vram.paddr) {
252 unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING;
253 drm_mm_takedown(&priv->vram.mm);
254 dma_free_attrs(dev, priv->vram.size, NULL,
255 priv->vram.paddr, attrs);
258 component_unbind_all(dev, ddev);
260 msm_mdss_destroy(ddev);
262 ddev->dev_private = NULL;
270 static int get_mdp_ver(struct platform_device *pdev)
272 struct device *dev = &pdev->dev;
274 return (int) (unsigned long) of_device_get_match_data(dev);
277 #include <linux/of_address.h>
279 static int msm_init_vram(struct drm_device *dev)
281 struct msm_drm_private *priv = dev->dev_private;
282 struct device_node *node;
283 unsigned long size = 0;
286 /* In the device-tree world, we could have a 'memory-region'
287 * phandle, which gives us a link to our "vram". Allocating
288 * is all nicely abstracted behind the dma api, but we need
289 * to know the entire size to allocate it all in one go. There
291 * 1) device with no IOMMU, in which case we need exclusive
292 * access to a VRAM carveout big enough for all gpu
294 * 2) device with IOMMU, but where the bootloader puts up
295 * a splash screen. In this case, the VRAM carveout
296 * need only be large enough for fbdev fb. But we need
297 * exclusive access to the buffer to avoid the kernel
298 * using those pages for other purposes (which appears
299 * as corruption on screen before we have a chance to
300 * load and do initial modeset)
303 node = of_parse_phandle(dev->dev->of_node, "memory-region", 0);
306 ret = of_address_to_resource(node, 0, &r);
310 size = r.end - r.start;
311 DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
313 /* if we have no IOMMU, then we need to use carveout allocator.
314 * Grab the entire CMA chunk carved out in early startup in
317 } else if (!iommu_present(&platform_bus_type)) {
318 DRM_INFO("using %s VRAM carveout\n", vram);
319 size = memparse(vram, NULL);
323 unsigned long attrs = 0;
326 priv->vram.size = size;
328 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
329 spin_lock_init(&priv->vram.lock);
331 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
332 attrs |= DMA_ATTR_WRITE_COMBINE;
334 /* note that for no-kernel-mapping, the vaddr returned
335 * is bogus, but non-null if allocation succeeded:
337 p = dma_alloc_attrs(dev->dev, size,
338 &priv->vram.paddr, GFP_KERNEL, attrs);
340 dev_err(dev->dev, "failed to allocate VRAM\n");
341 priv->vram.paddr = 0;
345 dev_info(dev->dev, "VRAM: %08x->%08x\n",
346 (uint32_t)priv->vram.paddr,
347 (uint32_t)(priv->vram.paddr + size));
353 static int msm_drm_init(struct device *dev, struct drm_driver *drv)
355 struct platform_device *pdev = to_platform_device(dev);
356 struct drm_device *ddev;
357 struct msm_drm_private *priv;
361 ddev = drm_dev_alloc(drv, dev);
363 dev_err(dev, "failed to allocate drm_device\n");
364 return PTR_ERR(ddev);
367 platform_set_drvdata(pdev, ddev);
369 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
375 ddev->dev_private = priv;
378 ret = msm_mdss_init(ddev);
385 priv->wq = alloc_ordered_workqueue("msm", 0);
386 priv->atomic_wq = alloc_ordered_workqueue("msm:atomic", 0);
387 init_waitqueue_head(&priv->pending_crtcs_event);
389 INIT_LIST_HEAD(&priv->inactive_list);
390 INIT_LIST_HEAD(&priv->vblank_ctrl.event_list);
391 INIT_WORK(&priv->vblank_ctrl.work, vblank_ctrl_worker);
392 spin_lock_init(&priv->vblank_ctrl.lock);
394 drm_mode_config_init(ddev);
396 /* Bind all our sub-components: */
397 ret = component_bind_all(dev, ddev);
399 msm_mdss_destroy(ddev);
405 ret = msm_init_vram(ddev);
409 msm_gem_shrinker_init(ddev);
411 switch (get_mdp_ver(pdev)) {
413 kms = mdp4_kms_init(ddev);
417 kms = mdp5_kms_init(ddev);
420 kms = ERR_PTR(-ENODEV);
426 * NOTE: once we have GPU support, having no kms should not
427 * be considered fatal.. ideally we would still support gpu
428 * and (for example) use dmabuf/prime to share buffers with
429 * imx drm driver on iMX5
431 dev_err(dev, "failed to load kms\n");
437 ret = kms->funcs->hw_init(kms);
439 dev_err(dev, "kms hw init failed: %d\n", ret);
444 ddev->mode_config.funcs = &mode_config_funcs;
446 ret = drm_vblank_init(ddev, priv->num_crtcs);
448 dev_err(dev, "failed to initialize vblank\n");
453 pm_runtime_get_sync(dev);
454 ret = drm_irq_install(ddev, kms->irq);
455 pm_runtime_put_sync(dev);
457 dev_err(dev, "failed to install IRQ handler\n");
462 ret = drm_dev_register(ddev, 0);
466 drm_mode_config_reset(ddev);
468 #ifdef CONFIG_DRM_FBDEV_EMULATION
470 priv->fbdev = msm_fbdev_init(ddev);
473 ret = msm_debugfs_late_init(ddev);
477 drm_kms_helper_poll_init(ddev);
490 static void load_gpu(struct drm_device *dev)
492 static DEFINE_MUTEX(init_lock);
493 struct msm_drm_private *priv = dev->dev_private;
495 mutex_lock(&init_lock);
498 priv->gpu = adreno_load_gpu(dev);
500 mutex_unlock(&init_lock);
503 static int context_init(struct drm_device *dev, struct drm_file *file)
505 struct msm_file_private *ctx;
507 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
511 msm_submitqueue_init(dev, ctx);
513 file->driver_priv = ctx;
518 static int msm_open(struct drm_device *dev, struct drm_file *file)
520 /* For now, load gpu on open.. to avoid the requirement of having
521 * firmware in the initrd.
525 return context_init(dev, file);
528 static void context_close(struct msm_file_private *ctx)
530 msm_submitqueue_close(ctx);
534 static void msm_postclose(struct drm_device *dev, struct drm_file *file)
536 struct msm_drm_private *priv = dev->dev_private;
537 struct msm_file_private *ctx = file->driver_priv;
539 mutex_lock(&dev->struct_mutex);
540 if (ctx == priv->lastctx)
541 priv->lastctx = NULL;
542 mutex_unlock(&dev->struct_mutex);
547 static irqreturn_t msm_irq(int irq, void *arg)
549 struct drm_device *dev = arg;
550 struct msm_drm_private *priv = dev->dev_private;
551 struct msm_kms *kms = priv->kms;
553 return kms->funcs->irq(kms);
556 static void msm_irq_preinstall(struct drm_device *dev)
558 struct msm_drm_private *priv = dev->dev_private;
559 struct msm_kms *kms = priv->kms;
561 kms->funcs->irq_preinstall(kms);
564 static int msm_irq_postinstall(struct drm_device *dev)
566 struct msm_drm_private *priv = dev->dev_private;
567 struct msm_kms *kms = priv->kms;
569 return kms->funcs->irq_postinstall(kms);
572 static void msm_irq_uninstall(struct drm_device *dev)
574 struct msm_drm_private *priv = dev->dev_private;
575 struct msm_kms *kms = priv->kms;
577 kms->funcs->irq_uninstall(kms);
580 static int msm_enable_vblank(struct drm_device *dev, unsigned int pipe)
582 struct msm_drm_private *priv = dev->dev_private;
583 struct msm_kms *kms = priv->kms;
586 DBG("dev=%p, crtc=%u", dev, pipe);
587 return vblank_ctrl_queue_work(priv, pipe, true);
590 static void msm_disable_vblank(struct drm_device *dev, unsigned int pipe)
592 struct msm_drm_private *priv = dev->dev_private;
593 struct msm_kms *kms = priv->kms;
596 DBG("dev=%p, crtc=%u", dev, pipe);
597 vblank_ctrl_queue_work(priv, pipe, false);
604 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
605 struct drm_file *file)
607 struct msm_drm_private *priv = dev->dev_private;
608 struct drm_msm_param *args = data;
611 /* for now, we just have 3d pipe.. eventually this would need to
612 * be more clever to dispatch to appropriate gpu module:
614 if (args->pipe != MSM_PIPE_3D0)
622 return gpu->funcs->get_param(gpu, args->param, &args->value);
625 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
626 struct drm_file *file)
628 struct drm_msm_gem_new *args = data;
630 if (args->flags & ~MSM_BO_FLAGS) {
631 DRM_ERROR("invalid flags: %08x\n", args->flags);
635 return msm_gem_new_handle(dev, file, args->size,
636 args->flags, &args->handle);
639 static inline ktime_t to_ktime(struct drm_msm_timespec timeout)
641 return ktime_set(timeout.tv_sec, timeout.tv_nsec);
644 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
645 struct drm_file *file)
647 struct drm_msm_gem_cpu_prep *args = data;
648 struct drm_gem_object *obj;
649 ktime_t timeout = to_ktime(args->timeout);
652 if (args->op & ~MSM_PREP_FLAGS) {
653 DRM_ERROR("invalid op: %08x\n", args->op);
657 obj = drm_gem_object_lookup(file, args->handle);
661 ret = msm_gem_cpu_prep(obj, args->op, &timeout);
663 drm_gem_object_put_unlocked(obj);
668 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
669 struct drm_file *file)
671 struct drm_msm_gem_cpu_fini *args = data;
672 struct drm_gem_object *obj;
675 obj = drm_gem_object_lookup(file, args->handle);
679 ret = msm_gem_cpu_fini(obj);
681 drm_gem_object_put_unlocked(obj);
686 static int msm_ioctl_gem_info_iova(struct drm_device *dev,
687 struct drm_gem_object *obj, uint64_t *iova)
689 struct msm_drm_private *priv = dev->dev_private;
694 return msm_gem_get_iova(obj, priv->gpu->aspace, iova);
697 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
698 struct drm_file *file)
700 struct drm_msm_gem_info *args = data;
701 struct drm_gem_object *obj;
704 if (args->flags & ~MSM_INFO_FLAGS)
707 obj = drm_gem_object_lookup(file, args->handle);
711 if (args->flags & MSM_INFO_IOVA) {
714 ret = msm_ioctl_gem_info_iova(dev, obj, &iova);
718 args->offset = msm_gem_mmap_offset(obj);
721 drm_gem_object_put_unlocked(obj);
726 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
727 struct drm_file *file)
729 struct msm_drm_private *priv = dev->dev_private;
730 struct drm_msm_wait_fence *args = data;
731 ktime_t timeout = to_ktime(args->timeout);
732 struct msm_gpu_submitqueue *queue;
733 struct msm_gpu *gpu = priv->gpu;
737 DRM_ERROR("invalid pad: %08x\n", args->pad);
744 queue = msm_submitqueue_get(file->driver_priv, args->queueid);
748 ret = msm_wait_fence(gpu->rb[queue->prio]->fctx, args->fence, &timeout,
751 msm_submitqueue_put(queue);
755 static int msm_ioctl_gem_madvise(struct drm_device *dev, void *data,
756 struct drm_file *file)
758 struct drm_msm_gem_madvise *args = data;
759 struct drm_gem_object *obj;
762 switch (args->madv) {
763 case MSM_MADV_DONTNEED:
764 case MSM_MADV_WILLNEED:
770 ret = mutex_lock_interruptible(&dev->struct_mutex);
774 obj = drm_gem_object_lookup(file, args->handle);
780 ret = msm_gem_madvise(obj, args->madv);
782 args->retained = ret;
786 drm_gem_object_put(obj);
789 mutex_unlock(&dev->struct_mutex);
794 static int msm_ioctl_submitqueue_new(struct drm_device *dev, void *data,
795 struct drm_file *file)
797 struct drm_msm_submitqueue *args = data;
799 if (args->flags & ~MSM_SUBMITQUEUE_FLAGS)
802 return msm_submitqueue_create(dev, file->driver_priv, args->prio,
803 args->flags, &args->id);
807 static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
808 struct drm_file *file)
810 u32 id = *(u32 *) data;
812 return msm_submitqueue_remove(file->driver_priv, id);
815 static const struct drm_ioctl_desc msm_ioctls[] = {
816 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_AUTH|DRM_RENDER_ALLOW),
817 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_AUTH|DRM_RENDER_ALLOW),
818 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_AUTH|DRM_RENDER_ALLOW),
819 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
820 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
821 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_AUTH|DRM_RENDER_ALLOW),
822 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_AUTH|DRM_RENDER_ALLOW),
823 DRM_IOCTL_DEF_DRV(MSM_GEM_MADVISE, msm_ioctl_gem_madvise, DRM_AUTH|DRM_RENDER_ALLOW),
824 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_NEW, msm_ioctl_submitqueue_new, DRM_AUTH|DRM_RENDER_ALLOW),
825 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_AUTH|DRM_RENDER_ALLOW),
828 static const struct vm_operations_struct vm_ops = {
829 .fault = msm_gem_fault,
830 .open = drm_gem_vm_open,
831 .close = drm_gem_vm_close,
834 static const struct file_operations fops = {
835 .owner = THIS_MODULE,
837 .release = drm_release,
838 .unlocked_ioctl = drm_ioctl,
839 .compat_ioctl = drm_compat_ioctl,
843 .mmap = msm_gem_mmap,
846 static struct drm_driver msm_driver = {
847 .driver_features = DRIVER_HAVE_IRQ |
854 .postclose = msm_postclose,
855 .lastclose = drm_fb_helper_lastclose,
856 .irq_handler = msm_irq,
857 .irq_preinstall = msm_irq_preinstall,
858 .irq_postinstall = msm_irq_postinstall,
859 .irq_uninstall = msm_irq_uninstall,
860 .enable_vblank = msm_enable_vblank,
861 .disable_vblank = msm_disable_vblank,
862 .gem_free_object = msm_gem_free_object,
863 .gem_vm_ops = &vm_ops,
864 .dumb_create = msm_gem_dumb_create,
865 .dumb_map_offset = msm_gem_dumb_map_offset,
866 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
867 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
868 .gem_prime_export = drm_gem_prime_export,
869 .gem_prime_import = drm_gem_prime_import,
870 .gem_prime_res_obj = msm_gem_prime_res_obj,
871 .gem_prime_pin = msm_gem_prime_pin,
872 .gem_prime_unpin = msm_gem_prime_unpin,
873 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
874 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
875 .gem_prime_vmap = msm_gem_prime_vmap,
876 .gem_prime_vunmap = msm_gem_prime_vunmap,
877 .gem_prime_mmap = msm_gem_prime_mmap,
878 #ifdef CONFIG_DEBUG_FS
879 .debugfs_init = msm_debugfs_init,
881 .ioctls = msm_ioctls,
882 .num_ioctls = ARRAY_SIZE(msm_ioctls),
885 .desc = "MSM Snapdragon DRM",
887 .major = MSM_VERSION_MAJOR,
888 .minor = MSM_VERSION_MINOR,
889 .patchlevel = MSM_VERSION_PATCHLEVEL,
892 #ifdef CONFIG_PM_SLEEP
893 static int msm_pm_suspend(struct device *dev)
895 struct drm_device *ddev = dev_get_drvdata(dev);
897 drm_kms_helper_poll_disable(ddev);
902 static int msm_pm_resume(struct device *dev)
904 struct drm_device *ddev = dev_get_drvdata(dev);
906 drm_kms_helper_poll_enable(ddev);
913 static int msm_runtime_suspend(struct device *dev)
915 struct drm_device *ddev = dev_get_drvdata(dev);
916 struct msm_drm_private *priv = ddev->dev_private;
921 return msm_mdss_disable(priv->mdss);
926 static int msm_runtime_resume(struct device *dev)
928 struct drm_device *ddev = dev_get_drvdata(dev);
929 struct msm_drm_private *priv = ddev->dev_private;
934 return msm_mdss_enable(priv->mdss);
940 static const struct dev_pm_ops msm_pm_ops = {
941 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
942 SET_RUNTIME_PM_OPS(msm_runtime_suspend, msm_runtime_resume, NULL)
946 * Componentized driver support:
950 * NOTE: duplication of the same code as exynos or imx (or probably any other).
951 * so probably some room for some helpers
953 static int compare_of(struct device *dev, void *data)
955 return dev->of_node == data;
959 * Identify what components need to be added by parsing what remote-endpoints
960 * our MDP output ports are connected to. In the case of LVDS on MDP4, there
961 * is no external component that we need to add since LVDS is within MDP4
964 static int add_components_mdp(struct device *mdp_dev,
965 struct component_match **matchptr)
967 struct device_node *np = mdp_dev->of_node;
968 struct device_node *ep_node;
969 struct device *master_dev;
972 * on MDP4 based platforms, the MDP platform device is the component
973 * master that adds other display interface components to itself.
975 * on MDP5 based platforms, the MDSS platform device is the component
976 * master that adds MDP5 and other display interface components to
979 if (of_device_is_compatible(np, "qcom,mdp4"))
980 master_dev = mdp_dev;
982 master_dev = mdp_dev->parent;
984 for_each_endpoint_of_node(np, ep_node) {
985 struct device_node *intf;
986 struct of_endpoint ep;
989 ret = of_graph_parse_endpoint(ep_node, &ep);
991 dev_err(mdp_dev, "unable to parse port endpoint\n");
992 of_node_put(ep_node);
997 * The LCDC/LVDS port on MDP4 is a speacial case where the
998 * remote-endpoint isn't a component that we need to add
1000 if (of_device_is_compatible(np, "qcom,mdp4") &&
1005 * It's okay if some of the ports don't have a remote endpoint
1006 * specified. It just means that the port isn't connected to
1007 * any external interface.
1009 intf = of_graph_get_remote_port_parent(ep_node);
1013 drm_of_component_match_add(master_dev, matchptr, compare_of,
1021 static int compare_name_mdp(struct device *dev, void *data)
1023 return (strstr(dev_name(dev), "mdp") != NULL);
1026 static int add_display_components(struct device *dev,
1027 struct component_match **matchptr)
1029 struct device *mdp_dev;
1033 * MDP5 based devices don't have a flat hierarchy. There is a top level
1034 * parent: MDSS, and children: MDP5, DSI, HDMI, eDP etc. Populate the
1035 * children devices, find the MDP5 node, and then add the interfaces
1036 * to our components list.
1038 if (of_device_is_compatible(dev->of_node, "qcom,mdss")) {
1039 ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
1041 dev_err(dev, "failed to populate children devices\n");
1045 mdp_dev = device_find_child(dev, NULL, compare_name_mdp);
1047 dev_err(dev, "failed to find MDSS MDP node\n");
1048 of_platform_depopulate(dev);
1052 put_device(mdp_dev);
1054 /* add the MDP component itself */
1055 drm_of_component_match_add(dev, matchptr, compare_of,
1062 ret = add_components_mdp(mdp_dev, matchptr);
1064 of_platform_depopulate(dev);
1070 * We don't know what's the best binding to link the gpu with the drm device.
1071 * Fow now, we just hunt for all the possible gpus that we support, and add them
1074 static const struct of_device_id msm_gpu_match[] = {
1075 { .compatible = "qcom,adreno" },
1076 { .compatible = "qcom,adreno-3xx" },
1077 { .compatible = "qcom,kgsl-3d0" },
1081 static int add_gpu_components(struct device *dev,
1082 struct component_match **matchptr)
1084 struct device_node *np;
1086 np = of_find_matching_node(NULL, msm_gpu_match);
1090 drm_of_component_match_add(dev, matchptr, compare_of, np);
1097 static int msm_drm_bind(struct device *dev)
1099 return msm_drm_init(dev, &msm_driver);
1102 static void msm_drm_unbind(struct device *dev)
1104 msm_drm_uninit(dev);
1107 static const struct component_master_ops msm_drm_ops = {
1108 .bind = msm_drm_bind,
1109 .unbind = msm_drm_unbind,
1116 static int msm_pdev_probe(struct platform_device *pdev)
1118 struct component_match *match = NULL;
1121 ret = add_display_components(&pdev->dev, &match);
1125 ret = add_gpu_components(&pdev->dev, &match);
1129 /* on all devices that I am aware of, iommu's which can map
1130 * any address the cpu can see are used:
1132 ret = dma_set_mask_and_coherent(&pdev->dev, ~0);
1136 return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
1139 static int msm_pdev_remove(struct platform_device *pdev)
1141 component_master_del(&pdev->dev, &msm_drm_ops);
1142 of_platform_depopulate(&pdev->dev);
1147 static const struct of_device_id dt_match[] = {
1148 { .compatible = "qcom,mdp4", .data = (void *)4 }, /* MDP4 */
1149 { .compatible = "qcom,mdss", .data = (void *)5 }, /* MDP5 MDSS */
1152 MODULE_DEVICE_TABLE(of, dt_match);
1154 static struct platform_driver msm_platform_driver = {
1155 .probe = msm_pdev_probe,
1156 .remove = msm_pdev_remove,
1159 .of_match_table = dt_match,
1164 static int __init msm_drm_register(void)
1173 msm_hdmi_register();
1175 return platform_driver_register(&msm_platform_driver);
1178 static void __exit msm_drm_unregister(void)
1181 platform_driver_unregister(&msm_platform_driver);
1182 msm_hdmi_unregister();
1183 adreno_unregister();
1184 msm_edp_unregister();
1185 msm_dsi_unregister();
1186 msm_mdp_unregister();
1189 module_init(msm_drm_register);
1190 module_exit(msm_drm_unregister);
1193 MODULE_DESCRIPTION("MSM DRM Driver");
1194 MODULE_LICENSE("GPL");