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 = drm_atomic_helper_commit,
47 static const struct drm_mode_config_helper_funcs mode_config_helper_funcs = {
48 .atomic_commit_tail = msm_atomic_commit_tail,
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_FBDEV_EMULATION
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);
69 bool dumpstate = false;
70 MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
71 module_param(dumpstate, bool, 0600);
73 static bool modeset = true;
74 MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (1=on (default), 0=disable)");
75 module_param(modeset, bool, 0600);
81 struct clk *msm_clk_get(struct platform_device *pdev, const char *name)
86 clk = devm_clk_get(&pdev->dev, name);
87 if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
90 snprintf(name2, sizeof(name2), "%s_clk", name);
92 clk = devm_clk_get(&pdev->dev, name2);
94 dev_warn(&pdev->dev, "Using legacy clk name binding. Use "
95 "\"%s\" instead of \"%s\"\n", name, name2);
100 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
103 struct resource *res;
108 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
110 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
113 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
114 return ERR_PTR(-EINVAL);
117 size = resource_size(res);
119 ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
121 dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
122 return ERR_PTR(-ENOMEM);
126 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
131 void msm_writel(u32 data, void __iomem *addr)
134 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
138 u32 msm_readl(const void __iomem *addr)
140 u32 val = readl(addr);
142 pr_err("IO:R %p %08x\n", addr, val);
146 struct vblank_event {
147 struct list_head node;
152 static void vblank_ctrl_worker(struct work_struct *work)
154 struct msm_vblank_ctrl *vbl_ctrl = container_of(work,
155 struct msm_vblank_ctrl, work);
156 struct msm_drm_private *priv = container_of(vbl_ctrl,
157 struct msm_drm_private, vblank_ctrl);
158 struct msm_kms *kms = priv->kms;
159 struct vblank_event *vbl_ev, *tmp;
162 spin_lock_irqsave(&vbl_ctrl->lock, flags);
163 list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
164 list_del(&vbl_ev->node);
165 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
168 kms->funcs->enable_vblank(kms,
169 priv->crtcs[vbl_ev->crtc_id]);
171 kms->funcs->disable_vblank(kms,
172 priv->crtcs[vbl_ev->crtc_id]);
176 spin_lock_irqsave(&vbl_ctrl->lock, flags);
179 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
182 static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
183 int crtc_id, bool enable)
185 struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
186 struct vblank_event *vbl_ev;
189 vbl_ev = kzalloc(sizeof(*vbl_ev), GFP_ATOMIC);
193 vbl_ev->crtc_id = crtc_id;
194 vbl_ev->enable = enable;
196 spin_lock_irqsave(&vbl_ctrl->lock, flags);
197 list_add_tail(&vbl_ev->node, &vbl_ctrl->event_list);
198 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
200 queue_work(priv->wq, &vbl_ctrl->work);
205 static int msm_drm_uninit(struct device *dev)
207 struct platform_device *pdev = to_platform_device(dev);
208 struct drm_device *ddev = platform_get_drvdata(pdev);
209 struct msm_drm_private *priv = ddev->dev_private;
210 struct msm_kms *kms = priv->kms;
211 struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
212 struct vblank_event *vbl_ev, *tmp;
214 /* We must cancel and cleanup any pending vblank enable/disable
215 * work before drm_irq_uninstall() to avoid work re-enabling an
216 * irq after uninstall has disabled it.
218 cancel_work_sync(&vbl_ctrl->work);
219 list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
220 list_del(&vbl_ev->node);
224 msm_gem_shrinker_cleanup(ddev);
226 drm_kms_helper_poll_fini(ddev);
228 drm_dev_unregister(ddev);
230 msm_perf_debugfs_cleanup(priv);
231 msm_rd_debugfs_cleanup(priv);
233 #ifdef CONFIG_DRM_FBDEV_EMULATION
234 if (fbdev && priv->fbdev)
235 msm_fbdev_free(ddev);
237 drm_mode_config_cleanup(ddev);
239 pm_runtime_get_sync(dev);
240 drm_irq_uninstall(ddev);
241 pm_runtime_put_sync(dev);
243 flush_workqueue(priv->wq);
244 destroy_workqueue(priv->wq);
246 flush_workqueue(priv->atomic_wq);
247 destroy_workqueue(priv->atomic_wq);
249 if (kms && kms->funcs)
250 kms->funcs->destroy(kms);
252 if (priv->vram.paddr) {
253 unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING;
254 drm_mm_takedown(&priv->vram.mm);
255 dma_free_attrs(dev, priv->vram.size, NULL,
256 priv->vram.paddr, attrs);
259 component_unbind_all(dev, ddev);
261 msm_mdss_destroy(ddev);
263 ddev->dev_private = NULL;
271 static int get_mdp_ver(struct platform_device *pdev)
273 struct device *dev = &pdev->dev;
275 return (int) (unsigned long) of_device_get_match_data(dev);
278 #include <linux/of_address.h>
280 static int msm_init_vram(struct drm_device *dev)
282 struct msm_drm_private *priv = dev->dev_private;
283 struct device_node *node;
284 unsigned long size = 0;
287 /* In the device-tree world, we could have a 'memory-region'
288 * phandle, which gives us a link to our "vram". Allocating
289 * is all nicely abstracted behind the dma api, but we need
290 * to know the entire size to allocate it all in one go. There
292 * 1) device with no IOMMU, in which case we need exclusive
293 * access to a VRAM carveout big enough for all gpu
295 * 2) device with IOMMU, but where the bootloader puts up
296 * a splash screen. In this case, the VRAM carveout
297 * need only be large enough for fbdev fb. But we need
298 * exclusive access to the buffer to avoid the kernel
299 * using those pages for other purposes (which appears
300 * as corruption on screen before we have a chance to
301 * load and do initial modeset)
304 node = of_parse_phandle(dev->dev->of_node, "memory-region", 0);
307 ret = of_address_to_resource(node, 0, &r);
311 size = r.end - r.start;
312 DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
314 /* if we have no IOMMU, then we need to use carveout allocator.
315 * Grab the entire CMA chunk carved out in early startup in
318 } else if (!iommu_present(&platform_bus_type)) {
319 DRM_INFO("using %s VRAM carveout\n", vram);
320 size = memparse(vram, NULL);
324 unsigned long attrs = 0;
327 priv->vram.size = size;
329 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
330 spin_lock_init(&priv->vram.lock);
332 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
333 attrs |= DMA_ATTR_WRITE_COMBINE;
335 /* note that for no-kernel-mapping, the vaddr returned
336 * is bogus, but non-null if allocation succeeded:
338 p = dma_alloc_attrs(dev->dev, size,
339 &priv->vram.paddr, GFP_KERNEL, attrs);
341 dev_err(dev->dev, "failed to allocate VRAM\n");
342 priv->vram.paddr = 0;
346 dev_info(dev->dev, "VRAM: %08x->%08x\n",
347 (uint32_t)priv->vram.paddr,
348 (uint32_t)(priv->vram.paddr + size));
354 static int msm_drm_init(struct device *dev, struct drm_driver *drv)
356 struct platform_device *pdev = to_platform_device(dev);
357 struct drm_device *ddev;
358 struct msm_drm_private *priv;
362 ddev = drm_dev_alloc(drv, dev);
364 dev_err(dev, "failed to allocate drm_device\n");
365 return PTR_ERR(ddev);
368 platform_set_drvdata(pdev, ddev);
370 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
376 ddev->dev_private = priv;
379 ret = msm_mdss_init(ddev);
386 priv->wq = alloc_ordered_workqueue("msm", 0);
387 priv->atomic_wq = alloc_ordered_workqueue("msm:atomic", 0);
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;
445 ddev->mode_config.helper_private = &mode_config_helper_funcs;
447 ret = drm_vblank_init(ddev, priv->num_crtcs);
449 dev_err(dev, "failed to initialize vblank\n");
454 pm_runtime_get_sync(dev);
455 ret = drm_irq_install(ddev, kms->irq);
456 pm_runtime_put_sync(dev);
458 dev_err(dev, "failed to install IRQ handler\n");
463 ret = drm_dev_register(ddev, 0);
467 drm_mode_config_reset(ddev);
469 #ifdef CONFIG_DRM_FBDEV_EMULATION
471 priv->fbdev = msm_fbdev_init(ddev);
474 ret = msm_debugfs_late_init(ddev);
478 drm_kms_helper_poll_init(ddev);
491 static void load_gpu(struct drm_device *dev)
493 static DEFINE_MUTEX(init_lock);
494 struct msm_drm_private *priv = dev->dev_private;
496 mutex_lock(&init_lock);
499 priv->gpu = adreno_load_gpu(dev);
501 mutex_unlock(&init_lock);
504 static int context_init(struct drm_device *dev, struct drm_file *file)
506 struct msm_file_private *ctx;
508 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
512 msm_submitqueue_init(dev, ctx);
514 file->driver_priv = ctx;
519 static int msm_open(struct drm_device *dev, struct drm_file *file)
521 /* For now, load gpu on open.. to avoid the requirement of having
522 * firmware in the initrd.
526 return context_init(dev, file);
529 static void context_close(struct msm_file_private *ctx)
531 msm_submitqueue_close(ctx);
535 static void msm_postclose(struct drm_device *dev, struct drm_file *file)
537 struct msm_drm_private *priv = dev->dev_private;
538 struct msm_file_private *ctx = file->driver_priv;
540 mutex_lock(&dev->struct_mutex);
541 if (ctx == priv->lastctx)
542 priv->lastctx = NULL;
543 mutex_unlock(&dev->struct_mutex);
548 static irqreturn_t msm_irq(int irq, void *arg)
550 struct drm_device *dev = arg;
551 struct msm_drm_private *priv = dev->dev_private;
552 struct msm_kms *kms = priv->kms;
554 return kms->funcs->irq(kms);
557 static void msm_irq_preinstall(struct drm_device *dev)
559 struct msm_drm_private *priv = dev->dev_private;
560 struct msm_kms *kms = priv->kms;
562 kms->funcs->irq_preinstall(kms);
565 static int msm_irq_postinstall(struct drm_device *dev)
567 struct msm_drm_private *priv = dev->dev_private;
568 struct msm_kms *kms = priv->kms;
570 return kms->funcs->irq_postinstall(kms);
573 static void msm_irq_uninstall(struct drm_device *dev)
575 struct msm_drm_private *priv = dev->dev_private;
576 struct msm_kms *kms = priv->kms;
578 kms->funcs->irq_uninstall(kms);
581 static int msm_enable_vblank(struct drm_device *dev, unsigned int pipe)
583 struct msm_drm_private *priv = dev->dev_private;
584 struct msm_kms *kms = priv->kms;
587 DBG("dev=%p, crtc=%u", dev, pipe);
588 return vblank_ctrl_queue_work(priv, pipe, true);
591 static void msm_disable_vblank(struct drm_device *dev, unsigned int pipe)
593 struct msm_drm_private *priv = dev->dev_private;
594 struct msm_kms *kms = priv->kms;
597 DBG("dev=%p, crtc=%u", dev, pipe);
598 vblank_ctrl_queue_work(priv, pipe, false);
605 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
606 struct drm_file *file)
608 struct msm_drm_private *priv = dev->dev_private;
609 struct drm_msm_param *args = data;
612 /* for now, we just have 3d pipe.. eventually this would need to
613 * be more clever to dispatch to appropriate gpu module:
615 if (args->pipe != MSM_PIPE_3D0)
623 return gpu->funcs->get_param(gpu, args->param, &args->value);
626 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
627 struct drm_file *file)
629 struct drm_msm_gem_new *args = data;
631 if (args->flags & ~MSM_BO_FLAGS) {
632 DRM_ERROR("invalid flags: %08x\n", args->flags);
636 return msm_gem_new_handle(dev, file, args->size,
637 args->flags, &args->handle);
640 static inline ktime_t to_ktime(struct drm_msm_timespec timeout)
642 return ktime_set(timeout.tv_sec, timeout.tv_nsec);
645 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
646 struct drm_file *file)
648 struct drm_msm_gem_cpu_prep *args = data;
649 struct drm_gem_object *obj;
650 ktime_t timeout = to_ktime(args->timeout);
653 if (args->op & ~MSM_PREP_FLAGS) {
654 DRM_ERROR("invalid op: %08x\n", args->op);
658 obj = drm_gem_object_lookup(file, args->handle);
662 ret = msm_gem_cpu_prep(obj, args->op, &timeout);
664 drm_gem_object_put_unlocked(obj);
669 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
670 struct drm_file *file)
672 struct drm_msm_gem_cpu_fini *args = data;
673 struct drm_gem_object *obj;
676 obj = drm_gem_object_lookup(file, args->handle);
680 ret = msm_gem_cpu_fini(obj);
682 drm_gem_object_put_unlocked(obj);
687 static int msm_ioctl_gem_info_iova(struct drm_device *dev,
688 struct drm_gem_object *obj, uint64_t *iova)
690 struct msm_drm_private *priv = dev->dev_private;
695 return msm_gem_get_iova(obj, priv->gpu->aspace, iova);
698 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
699 struct drm_file *file)
701 struct drm_msm_gem_info *args = data;
702 struct drm_gem_object *obj;
705 if (args->flags & ~MSM_INFO_FLAGS)
708 obj = drm_gem_object_lookup(file, args->handle);
712 if (args->flags & MSM_INFO_IOVA) {
715 ret = msm_ioctl_gem_info_iova(dev, obj, &iova);
719 args->offset = msm_gem_mmap_offset(obj);
722 drm_gem_object_put_unlocked(obj);
727 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
728 struct drm_file *file)
730 struct msm_drm_private *priv = dev->dev_private;
731 struct drm_msm_wait_fence *args = data;
732 ktime_t timeout = to_ktime(args->timeout);
733 struct msm_gpu_submitqueue *queue;
734 struct msm_gpu *gpu = priv->gpu;
738 DRM_ERROR("invalid pad: %08x\n", args->pad);
745 queue = msm_submitqueue_get(file->driver_priv, args->queueid);
749 ret = msm_wait_fence(gpu->rb[queue->prio]->fctx, args->fence, &timeout,
752 msm_submitqueue_put(queue);
756 static int msm_ioctl_gem_madvise(struct drm_device *dev, void *data,
757 struct drm_file *file)
759 struct drm_msm_gem_madvise *args = data;
760 struct drm_gem_object *obj;
763 switch (args->madv) {
764 case MSM_MADV_DONTNEED:
765 case MSM_MADV_WILLNEED:
771 ret = mutex_lock_interruptible(&dev->struct_mutex);
775 obj = drm_gem_object_lookup(file, args->handle);
781 ret = msm_gem_madvise(obj, args->madv);
783 args->retained = ret;
787 drm_gem_object_put(obj);
790 mutex_unlock(&dev->struct_mutex);
795 static int msm_ioctl_submitqueue_new(struct drm_device *dev, void *data,
796 struct drm_file *file)
798 struct drm_msm_submitqueue *args = data;
800 if (args->flags & ~MSM_SUBMITQUEUE_FLAGS)
803 return msm_submitqueue_create(dev, file->driver_priv, args->prio,
804 args->flags, &args->id);
808 static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
809 struct drm_file *file)
811 u32 id = *(u32 *) data;
813 return msm_submitqueue_remove(file->driver_priv, id);
816 static const struct drm_ioctl_desc msm_ioctls[] = {
817 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_AUTH|DRM_RENDER_ALLOW),
818 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_AUTH|DRM_RENDER_ALLOW),
819 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_AUTH|DRM_RENDER_ALLOW),
820 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
821 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
822 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_AUTH|DRM_RENDER_ALLOW),
823 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_AUTH|DRM_RENDER_ALLOW),
824 DRM_IOCTL_DEF_DRV(MSM_GEM_MADVISE, msm_ioctl_gem_madvise, DRM_AUTH|DRM_RENDER_ALLOW),
825 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_NEW, msm_ioctl_submitqueue_new, DRM_AUTH|DRM_RENDER_ALLOW),
826 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_AUTH|DRM_RENDER_ALLOW),
829 static const struct vm_operations_struct vm_ops = {
830 .fault = msm_gem_fault,
831 .open = drm_gem_vm_open,
832 .close = drm_gem_vm_close,
835 static const struct file_operations fops = {
836 .owner = THIS_MODULE,
838 .release = drm_release,
839 .unlocked_ioctl = drm_ioctl,
840 .compat_ioctl = drm_compat_ioctl,
844 .mmap = msm_gem_mmap,
847 static struct drm_driver msm_driver = {
848 .driver_features = DRIVER_HAVE_IRQ |
855 .postclose = msm_postclose,
856 .lastclose = drm_fb_helper_lastclose,
857 .irq_handler = msm_irq,
858 .irq_preinstall = msm_irq_preinstall,
859 .irq_postinstall = msm_irq_postinstall,
860 .irq_uninstall = msm_irq_uninstall,
861 .enable_vblank = msm_enable_vblank,
862 .disable_vblank = msm_disable_vblank,
863 .gem_free_object = msm_gem_free_object,
864 .gem_vm_ops = &vm_ops,
865 .dumb_create = msm_gem_dumb_create,
866 .dumb_map_offset = msm_gem_dumb_map_offset,
867 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
868 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
869 .gem_prime_export = drm_gem_prime_export,
870 .gem_prime_import = drm_gem_prime_import,
871 .gem_prime_res_obj = msm_gem_prime_res_obj,
872 .gem_prime_pin = msm_gem_prime_pin,
873 .gem_prime_unpin = msm_gem_prime_unpin,
874 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
875 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
876 .gem_prime_vmap = msm_gem_prime_vmap,
877 .gem_prime_vunmap = msm_gem_prime_vunmap,
878 .gem_prime_mmap = msm_gem_prime_mmap,
879 #ifdef CONFIG_DEBUG_FS
880 .debugfs_init = msm_debugfs_init,
882 .ioctls = msm_ioctls,
883 .num_ioctls = ARRAY_SIZE(msm_ioctls),
886 .desc = "MSM Snapdragon DRM",
888 .major = MSM_VERSION_MAJOR,
889 .minor = MSM_VERSION_MINOR,
890 .patchlevel = MSM_VERSION_PATCHLEVEL,
893 #ifdef CONFIG_PM_SLEEP
894 static int msm_pm_suspend(struct device *dev)
896 struct drm_device *ddev = dev_get_drvdata(dev);
898 drm_kms_helper_poll_disable(ddev);
903 static int msm_pm_resume(struct device *dev)
905 struct drm_device *ddev = dev_get_drvdata(dev);
907 drm_kms_helper_poll_enable(ddev);
914 static int msm_runtime_suspend(struct device *dev)
916 struct drm_device *ddev = dev_get_drvdata(dev);
917 struct msm_drm_private *priv = ddev->dev_private;
922 return msm_mdss_disable(priv->mdss);
927 static int msm_runtime_resume(struct device *dev)
929 struct drm_device *ddev = dev_get_drvdata(dev);
930 struct msm_drm_private *priv = ddev->dev_private;
935 return msm_mdss_enable(priv->mdss);
941 static const struct dev_pm_ops msm_pm_ops = {
942 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
943 SET_RUNTIME_PM_OPS(msm_runtime_suspend, msm_runtime_resume, NULL)
947 * Componentized driver support:
951 * NOTE: duplication of the same code as exynos or imx (or probably any other).
952 * so probably some room for some helpers
954 static int compare_of(struct device *dev, void *data)
956 return dev->of_node == data;
960 * Identify what components need to be added by parsing what remote-endpoints
961 * our MDP output ports are connected to. In the case of LVDS on MDP4, there
962 * is no external component that we need to add since LVDS is within MDP4
965 static int add_components_mdp(struct device *mdp_dev,
966 struct component_match **matchptr)
968 struct device_node *np = mdp_dev->of_node;
969 struct device_node *ep_node;
970 struct device *master_dev;
973 * on MDP4 based platforms, the MDP platform device is the component
974 * master that adds other display interface components to itself.
976 * on MDP5 based platforms, the MDSS platform device is the component
977 * master that adds MDP5 and other display interface components to
980 if (of_device_is_compatible(np, "qcom,mdp4"))
981 master_dev = mdp_dev;
983 master_dev = mdp_dev->parent;
985 for_each_endpoint_of_node(np, ep_node) {
986 struct device_node *intf;
987 struct of_endpoint ep;
990 ret = of_graph_parse_endpoint(ep_node, &ep);
992 dev_err(mdp_dev, "unable to parse port endpoint\n");
993 of_node_put(ep_node);
998 * The LCDC/LVDS port on MDP4 is a speacial case where the
999 * remote-endpoint isn't a component that we need to add
1001 if (of_device_is_compatible(np, "qcom,mdp4") &&
1006 * It's okay if some of the ports don't have a remote endpoint
1007 * specified. It just means that the port isn't connected to
1008 * any external interface.
1010 intf = of_graph_get_remote_port_parent(ep_node);
1014 drm_of_component_match_add(master_dev, matchptr, compare_of,
1022 static int compare_name_mdp(struct device *dev, void *data)
1024 return (strstr(dev_name(dev), "mdp") != NULL);
1027 static int add_display_components(struct device *dev,
1028 struct component_match **matchptr)
1030 struct device *mdp_dev;
1034 * MDP5 based devices don't have a flat hierarchy. There is a top level
1035 * parent: MDSS, and children: MDP5, DSI, HDMI, eDP etc. Populate the
1036 * children devices, find the MDP5 node, and then add the interfaces
1037 * to our components list.
1039 if (of_device_is_compatible(dev->of_node, "qcom,mdss")) {
1040 ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
1042 dev_err(dev, "failed to populate children devices\n");
1046 mdp_dev = device_find_child(dev, NULL, compare_name_mdp);
1048 dev_err(dev, "failed to find MDSS MDP node\n");
1049 of_platform_depopulate(dev);
1053 put_device(mdp_dev);
1055 /* add the MDP component itself */
1056 drm_of_component_match_add(dev, matchptr, compare_of,
1063 ret = add_components_mdp(mdp_dev, matchptr);
1065 of_platform_depopulate(dev);
1071 * We don't know what's the best binding to link the gpu with the drm device.
1072 * Fow now, we just hunt for all the possible gpus that we support, and add them
1075 static const struct of_device_id msm_gpu_match[] = {
1076 { .compatible = "qcom,adreno" },
1077 { .compatible = "qcom,adreno-3xx" },
1078 { .compatible = "qcom,kgsl-3d0" },
1082 static int add_gpu_components(struct device *dev,
1083 struct component_match **matchptr)
1085 struct device_node *np;
1087 np = of_find_matching_node(NULL, msm_gpu_match);
1091 drm_of_component_match_add(dev, matchptr, compare_of, np);
1098 static int msm_drm_bind(struct device *dev)
1100 return msm_drm_init(dev, &msm_driver);
1103 static void msm_drm_unbind(struct device *dev)
1105 msm_drm_uninit(dev);
1108 static const struct component_master_ops msm_drm_ops = {
1109 .bind = msm_drm_bind,
1110 .unbind = msm_drm_unbind,
1117 static int msm_pdev_probe(struct platform_device *pdev)
1119 struct component_match *match = NULL;
1122 ret = add_display_components(&pdev->dev, &match);
1126 ret = add_gpu_components(&pdev->dev, &match);
1130 /* on all devices that I am aware of, iommu's which can map
1131 * any address the cpu can see are used:
1133 ret = dma_set_mask_and_coherent(&pdev->dev, ~0);
1137 return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
1140 static int msm_pdev_remove(struct platform_device *pdev)
1142 component_master_del(&pdev->dev, &msm_drm_ops);
1143 of_platform_depopulate(&pdev->dev);
1148 static const struct of_device_id dt_match[] = {
1149 { .compatible = "qcom,mdp4", .data = (void *)4 }, /* MDP4 */
1150 { .compatible = "qcom,mdss", .data = (void *)5 }, /* MDP5 MDSS */
1153 MODULE_DEVICE_TABLE(of, dt_match);
1155 static struct platform_driver msm_platform_driver = {
1156 .probe = msm_pdev_probe,
1157 .remove = msm_pdev_remove,
1160 .of_match_table = dt_match,
1165 static int __init msm_drm_register(void)
1174 msm_hdmi_register();
1176 return platform_driver_register(&msm_platform_driver);
1179 static void __exit msm_drm_unregister(void)
1182 platform_driver_unregister(&msm_platform_driver);
1183 msm_hdmi_unregister();
1184 adreno_unregister();
1185 msm_edp_unregister();
1186 msm_dsi_unregister();
1187 msm_mdp_unregister();
1190 module_init(msm_drm_register);
1191 module_exit(msm_drm_unregister);
1194 MODULE_DESCRIPTION("MSM DRM Driver");
1195 MODULE_LICENSE("GPL");