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 void msm_fb_output_poll_changed(struct drm_device *dev)
42 struct msm_drm_private *priv = dev->dev_private;
44 drm_fb_helper_hotplug_event(priv->fbdev);
47 static const struct drm_mode_config_funcs mode_config_funcs = {
48 .fb_create = msm_framebuffer_create,
49 .output_poll_changed = msm_fb_output_poll_changed,
50 .atomic_check = drm_atomic_helper_check,
51 .atomic_commit = msm_atomic_commit,
52 .atomic_state_alloc = msm_atomic_state_alloc,
53 .atomic_state_clear = msm_atomic_state_clear,
54 .atomic_state_free = msm_atomic_state_free,
57 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
58 static bool reglog = false;
59 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
60 module_param(reglog, bool, 0600);
65 #ifdef CONFIG_DRM_FBDEV_EMULATION
66 static bool fbdev = true;
67 MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
68 module_param(fbdev, bool, 0600);
71 static char *vram = "16m";
72 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
73 module_param(vram, charp, 0);
75 bool dumpstate = false;
76 MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
77 module_param(dumpstate, bool, 0600);
79 static bool modeset = true;
80 MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (1=on (default), 0=disable)");
81 module_param(modeset, bool, 0600);
87 struct clk *msm_clk_get(struct platform_device *pdev, const char *name)
92 clk = devm_clk_get(&pdev->dev, name);
93 if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
96 snprintf(name2, sizeof(name2), "%s_clk", name);
98 clk = devm_clk_get(&pdev->dev, name2);
100 dev_warn(&pdev->dev, "Using legacy clk name binding. Use "
101 "\"%s\" instead of \"%s\"\n", name, name2);
106 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
109 struct resource *res;
114 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
116 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
119 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
120 return ERR_PTR(-EINVAL);
123 size = resource_size(res);
125 ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
127 dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
128 return ERR_PTR(-ENOMEM);
132 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
137 void msm_writel(u32 data, void __iomem *addr)
140 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
144 u32 msm_readl(const void __iomem *addr)
146 u32 val = readl(addr);
148 pr_err("IO:R %p %08x\n", addr, val);
152 struct vblank_event {
153 struct list_head node;
158 static void vblank_ctrl_worker(struct work_struct *work)
160 struct msm_vblank_ctrl *vbl_ctrl = container_of(work,
161 struct msm_vblank_ctrl, work);
162 struct msm_drm_private *priv = container_of(vbl_ctrl,
163 struct msm_drm_private, vblank_ctrl);
164 struct msm_kms *kms = priv->kms;
165 struct vblank_event *vbl_ev, *tmp;
168 spin_lock_irqsave(&vbl_ctrl->lock, flags);
169 list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
170 list_del(&vbl_ev->node);
171 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
174 kms->funcs->enable_vblank(kms,
175 priv->crtcs[vbl_ev->crtc_id]);
177 kms->funcs->disable_vblank(kms,
178 priv->crtcs[vbl_ev->crtc_id]);
182 spin_lock_irqsave(&vbl_ctrl->lock, flags);
185 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
188 static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
189 int crtc_id, bool enable)
191 struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
192 struct vblank_event *vbl_ev;
195 vbl_ev = kzalloc(sizeof(*vbl_ev), GFP_ATOMIC);
199 vbl_ev->crtc_id = crtc_id;
200 vbl_ev->enable = enable;
202 spin_lock_irqsave(&vbl_ctrl->lock, flags);
203 list_add_tail(&vbl_ev->node, &vbl_ctrl->event_list);
204 spin_unlock_irqrestore(&vbl_ctrl->lock, flags);
206 queue_work(priv->wq, &vbl_ctrl->work);
211 static int msm_drm_uninit(struct device *dev)
213 struct platform_device *pdev = to_platform_device(dev);
214 struct drm_device *ddev = platform_get_drvdata(pdev);
215 struct msm_drm_private *priv = ddev->dev_private;
216 struct msm_kms *kms = priv->kms;
217 struct msm_vblank_ctrl *vbl_ctrl = &priv->vblank_ctrl;
218 struct vblank_event *vbl_ev, *tmp;
220 /* We must cancel and cleanup any pending vblank enable/disable
221 * work before drm_irq_uninstall() to avoid work re-enabling an
222 * irq after uninstall has disabled it.
224 cancel_work_sync(&vbl_ctrl->work);
225 list_for_each_entry_safe(vbl_ev, tmp, &vbl_ctrl->event_list, node) {
226 list_del(&vbl_ev->node);
230 msm_gem_shrinker_cleanup(ddev);
232 drm_kms_helper_poll_fini(ddev);
234 drm_dev_unregister(ddev);
236 msm_perf_debugfs_cleanup(priv);
237 msm_rd_debugfs_cleanup(priv);
239 #ifdef CONFIG_DRM_FBDEV_EMULATION
240 if (fbdev && priv->fbdev)
241 msm_fbdev_free(ddev);
243 drm_mode_config_cleanup(ddev);
245 pm_runtime_get_sync(dev);
246 drm_irq_uninstall(ddev);
247 pm_runtime_put_sync(dev);
249 flush_workqueue(priv->wq);
250 destroy_workqueue(priv->wq);
252 flush_workqueue(priv->atomic_wq);
253 destroy_workqueue(priv->atomic_wq);
255 if (kms && kms->funcs)
256 kms->funcs->destroy(kms);
258 if (priv->vram.paddr) {
259 unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING;
260 drm_mm_takedown(&priv->vram.mm);
261 dma_free_attrs(dev, priv->vram.size, NULL,
262 priv->vram.paddr, attrs);
265 component_unbind_all(dev, ddev);
267 msm_mdss_destroy(ddev);
269 ddev->dev_private = NULL;
277 static int get_mdp_ver(struct platform_device *pdev)
279 struct device *dev = &pdev->dev;
281 return (int) (unsigned long) of_device_get_match_data(dev);
284 #include <linux/of_address.h>
286 static int msm_init_vram(struct drm_device *dev)
288 struct msm_drm_private *priv = dev->dev_private;
289 struct device_node *node;
290 unsigned long size = 0;
293 /* In the device-tree world, we could have a 'memory-region'
294 * phandle, which gives us a link to our "vram". Allocating
295 * is all nicely abstracted behind the dma api, but we need
296 * to know the entire size to allocate it all in one go. There
298 * 1) device with no IOMMU, in which case we need exclusive
299 * access to a VRAM carveout big enough for all gpu
301 * 2) device with IOMMU, but where the bootloader puts up
302 * a splash screen. In this case, the VRAM carveout
303 * need only be large enough for fbdev fb. But we need
304 * exclusive access to the buffer to avoid the kernel
305 * using those pages for other purposes (which appears
306 * as corruption on screen before we have a chance to
307 * load and do initial modeset)
310 node = of_parse_phandle(dev->dev->of_node, "memory-region", 0);
313 ret = of_address_to_resource(node, 0, &r);
317 size = r.end - r.start;
318 DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
320 /* if we have no IOMMU, then we need to use carveout allocator.
321 * Grab the entire CMA chunk carved out in early startup in
324 } else if (!iommu_present(&platform_bus_type)) {
325 DRM_INFO("using %s VRAM carveout\n", vram);
326 size = memparse(vram, NULL);
330 unsigned long attrs = 0;
333 priv->vram.size = size;
335 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
336 spin_lock_init(&priv->vram.lock);
338 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
339 attrs |= DMA_ATTR_WRITE_COMBINE;
341 /* note that for no-kernel-mapping, the vaddr returned
342 * is bogus, but non-null if allocation succeeded:
344 p = dma_alloc_attrs(dev->dev, size,
345 &priv->vram.paddr, GFP_KERNEL, attrs);
347 dev_err(dev->dev, "failed to allocate VRAM\n");
348 priv->vram.paddr = 0;
352 dev_info(dev->dev, "VRAM: %08x->%08x\n",
353 (uint32_t)priv->vram.paddr,
354 (uint32_t)(priv->vram.paddr + size));
360 static int msm_drm_init(struct device *dev, struct drm_driver *drv)
362 struct platform_device *pdev = to_platform_device(dev);
363 struct drm_device *ddev;
364 struct msm_drm_private *priv;
368 ddev = drm_dev_alloc(drv, dev);
370 dev_err(dev, "failed to allocate drm_device\n");
371 return PTR_ERR(ddev);
374 platform_set_drvdata(pdev, ddev);
376 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
382 ddev->dev_private = priv;
385 ret = msm_mdss_init(ddev);
392 priv->wq = alloc_ordered_workqueue("msm", 0);
393 priv->atomic_wq = alloc_ordered_workqueue("msm:atomic", 0);
394 init_waitqueue_head(&priv->pending_crtcs_event);
396 INIT_LIST_HEAD(&priv->inactive_list);
397 INIT_LIST_HEAD(&priv->vblank_ctrl.event_list);
398 INIT_WORK(&priv->vblank_ctrl.work, vblank_ctrl_worker);
399 spin_lock_init(&priv->vblank_ctrl.lock);
401 drm_mode_config_init(ddev);
403 /* Bind all our sub-components: */
404 ret = component_bind_all(dev, ddev);
406 msm_mdss_destroy(ddev);
412 ret = msm_init_vram(ddev);
416 msm_gem_shrinker_init(ddev);
418 switch (get_mdp_ver(pdev)) {
420 kms = mdp4_kms_init(ddev);
424 kms = mdp5_kms_init(ddev);
427 kms = ERR_PTR(-ENODEV);
433 * NOTE: once we have GPU support, having no kms should not
434 * be considered fatal.. ideally we would still support gpu
435 * and (for example) use dmabuf/prime to share buffers with
436 * imx drm driver on iMX5
438 dev_err(dev, "failed to load kms\n");
444 ret = kms->funcs->hw_init(kms);
446 dev_err(dev, "kms hw init failed: %d\n", ret);
451 ddev->mode_config.funcs = &mode_config_funcs;
453 ret = drm_vblank_init(ddev, priv->num_crtcs);
455 dev_err(dev, "failed to initialize vblank\n");
460 pm_runtime_get_sync(dev);
461 ret = drm_irq_install(ddev, kms->irq);
462 pm_runtime_put_sync(dev);
464 dev_err(dev, "failed to install IRQ handler\n");
469 ret = drm_dev_register(ddev, 0);
473 drm_mode_config_reset(ddev);
475 #ifdef CONFIG_DRM_FBDEV_EMULATION
477 priv->fbdev = msm_fbdev_init(ddev);
480 ret = msm_debugfs_late_init(ddev);
484 drm_kms_helper_poll_init(ddev);
497 static void load_gpu(struct drm_device *dev)
499 static DEFINE_MUTEX(init_lock);
500 struct msm_drm_private *priv = dev->dev_private;
502 mutex_lock(&init_lock);
505 priv->gpu = adreno_load_gpu(dev);
507 mutex_unlock(&init_lock);
510 static int context_init(struct drm_device *dev, struct drm_file *file)
512 struct msm_file_private *ctx;
514 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
518 msm_submitqueue_init(dev, ctx);
520 file->driver_priv = ctx;
525 static int msm_open(struct drm_device *dev, struct drm_file *file)
527 /* For now, load gpu on open.. to avoid the requirement of having
528 * firmware in the initrd.
532 return context_init(dev, file);
535 static void context_close(struct msm_file_private *ctx)
537 msm_submitqueue_close(ctx);
541 static void msm_postclose(struct drm_device *dev, struct drm_file *file)
543 struct msm_drm_private *priv = dev->dev_private;
544 struct msm_file_private *ctx = file->driver_priv;
546 mutex_lock(&dev->struct_mutex);
547 if (ctx == priv->lastctx)
548 priv->lastctx = NULL;
549 mutex_unlock(&dev->struct_mutex);
554 static void msm_lastclose(struct drm_device *dev)
556 struct msm_drm_private *priv = dev->dev_private;
558 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
561 static irqreturn_t msm_irq(int irq, void *arg)
563 struct drm_device *dev = arg;
564 struct msm_drm_private *priv = dev->dev_private;
565 struct msm_kms *kms = priv->kms;
567 return kms->funcs->irq(kms);
570 static void msm_irq_preinstall(struct drm_device *dev)
572 struct msm_drm_private *priv = dev->dev_private;
573 struct msm_kms *kms = priv->kms;
575 kms->funcs->irq_preinstall(kms);
578 static int msm_irq_postinstall(struct drm_device *dev)
580 struct msm_drm_private *priv = dev->dev_private;
581 struct msm_kms *kms = priv->kms;
583 return kms->funcs->irq_postinstall(kms);
586 static void msm_irq_uninstall(struct drm_device *dev)
588 struct msm_drm_private *priv = dev->dev_private;
589 struct msm_kms *kms = priv->kms;
591 kms->funcs->irq_uninstall(kms);
594 static int msm_enable_vblank(struct drm_device *dev, unsigned int pipe)
596 struct msm_drm_private *priv = dev->dev_private;
597 struct msm_kms *kms = priv->kms;
600 DBG("dev=%p, crtc=%u", dev, pipe);
601 return vblank_ctrl_queue_work(priv, pipe, true);
604 static void msm_disable_vblank(struct drm_device *dev, unsigned int pipe)
606 struct msm_drm_private *priv = dev->dev_private;
607 struct msm_kms *kms = priv->kms;
610 DBG("dev=%p, crtc=%u", dev, pipe);
611 vblank_ctrl_queue_work(priv, pipe, false);
618 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
619 struct drm_file *file)
621 struct msm_drm_private *priv = dev->dev_private;
622 struct drm_msm_param *args = data;
625 /* for now, we just have 3d pipe.. eventually this would need to
626 * be more clever to dispatch to appropriate gpu module:
628 if (args->pipe != MSM_PIPE_3D0)
636 return gpu->funcs->get_param(gpu, args->param, &args->value);
639 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
640 struct drm_file *file)
642 struct drm_msm_gem_new *args = data;
644 if (args->flags & ~MSM_BO_FLAGS) {
645 DRM_ERROR("invalid flags: %08x\n", args->flags);
649 return msm_gem_new_handle(dev, file, args->size,
650 args->flags, &args->handle);
653 static inline ktime_t to_ktime(struct drm_msm_timespec timeout)
655 return ktime_set(timeout.tv_sec, timeout.tv_nsec);
658 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
659 struct drm_file *file)
661 struct drm_msm_gem_cpu_prep *args = data;
662 struct drm_gem_object *obj;
663 ktime_t timeout = to_ktime(args->timeout);
666 if (args->op & ~MSM_PREP_FLAGS) {
667 DRM_ERROR("invalid op: %08x\n", args->op);
671 obj = drm_gem_object_lookup(file, args->handle);
675 ret = msm_gem_cpu_prep(obj, args->op, &timeout);
677 drm_gem_object_unreference_unlocked(obj);
682 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
683 struct drm_file *file)
685 struct drm_msm_gem_cpu_fini *args = data;
686 struct drm_gem_object *obj;
689 obj = drm_gem_object_lookup(file, args->handle);
693 ret = msm_gem_cpu_fini(obj);
695 drm_gem_object_unreference_unlocked(obj);
700 static int msm_ioctl_gem_info_iova(struct drm_device *dev,
701 struct drm_gem_object *obj, uint64_t *iova)
703 struct msm_drm_private *priv = dev->dev_private;
708 return msm_gem_get_iova(obj, priv->gpu->aspace, iova);
711 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
712 struct drm_file *file)
714 struct drm_msm_gem_info *args = data;
715 struct drm_gem_object *obj;
718 if (args->flags & ~MSM_INFO_FLAGS)
721 obj = drm_gem_object_lookup(file, args->handle);
725 if (args->flags & MSM_INFO_IOVA) {
728 ret = msm_ioctl_gem_info_iova(dev, obj, &iova);
732 args->offset = msm_gem_mmap_offset(obj);
735 drm_gem_object_unreference_unlocked(obj);
740 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
741 struct drm_file *file)
743 struct msm_drm_private *priv = dev->dev_private;
744 struct drm_msm_wait_fence *args = data;
745 ktime_t timeout = to_ktime(args->timeout);
746 struct msm_gpu_submitqueue *queue;
747 struct msm_gpu *gpu = priv->gpu;
751 DRM_ERROR("invalid pad: %08x\n", args->pad);
758 queue = msm_submitqueue_get(file->driver_priv, args->queueid);
762 ret = msm_wait_fence(gpu->rb[queue->prio]->fctx, args->fence, &timeout,
765 msm_submitqueue_put(queue);
769 static int msm_ioctl_gem_madvise(struct drm_device *dev, void *data,
770 struct drm_file *file)
772 struct drm_msm_gem_madvise *args = data;
773 struct drm_gem_object *obj;
776 switch (args->madv) {
777 case MSM_MADV_DONTNEED:
778 case MSM_MADV_WILLNEED:
784 ret = mutex_lock_interruptible(&dev->struct_mutex);
788 obj = drm_gem_object_lookup(file, args->handle);
794 ret = msm_gem_madvise(obj, args->madv);
796 args->retained = ret;
800 drm_gem_object_unreference(obj);
803 mutex_unlock(&dev->struct_mutex);
808 static int msm_ioctl_submitqueue_new(struct drm_device *dev, void *data,
809 struct drm_file *file)
811 struct drm_msm_submitqueue *args = data;
813 if (args->flags & ~MSM_SUBMITQUEUE_FLAGS)
816 return msm_submitqueue_create(dev, file->driver_priv, args->prio,
817 args->flags, &args->id);
821 static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
822 struct drm_file *file)
824 u32 id = *(u32 *) data;
826 return msm_submitqueue_remove(file->driver_priv, id);
829 static const struct drm_ioctl_desc msm_ioctls[] = {
830 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_AUTH|DRM_RENDER_ALLOW),
831 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_AUTH|DRM_RENDER_ALLOW),
832 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_AUTH|DRM_RENDER_ALLOW),
833 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
834 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
835 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_AUTH|DRM_RENDER_ALLOW),
836 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_AUTH|DRM_RENDER_ALLOW),
837 DRM_IOCTL_DEF_DRV(MSM_GEM_MADVISE, msm_ioctl_gem_madvise, DRM_AUTH|DRM_RENDER_ALLOW),
838 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_NEW, msm_ioctl_submitqueue_new, DRM_AUTH|DRM_RENDER_ALLOW),
839 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_AUTH|DRM_RENDER_ALLOW),
842 static const struct vm_operations_struct vm_ops = {
843 .fault = msm_gem_fault,
844 .open = drm_gem_vm_open,
845 .close = drm_gem_vm_close,
848 static const struct file_operations fops = {
849 .owner = THIS_MODULE,
851 .release = drm_release,
852 .unlocked_ioctl = drm_ioctl,
853 .compat_ioctl = drm_compat_ioctl,
857 .mmap = msm_gem_mmap,
860 static struct drm_driver msm_driver = {
861 .driver_features = DRIVER_HAVE_IRQ |
868 .postclose = msm_postclose,
869 .lastclose = msm_lastclose,
870 .irq_handler = msm_irq,
871 .irq_preinstall = msm_irq_preinstall,
872 .irq_postinstall = msm_irq_postinstall,
873 .irq_uninstall = msm_irq_uninstall,
874 .enable_vblank = msm_enable_vblank,
875 .disable_vblank = msm_disable_vblank,
876 .gem_free_object = msm_gem_free_object,
877 .gem_vm_ops = &vm_ops,
878 .dumb_create = msm_gem_dumb_create,
879 .dumb_map_offset = msm_gem_dumb_map_offset,
880 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
881 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
882 .gem_prime_export = drm_gem_prime_export,
883 .gem_prime_import = drm_gem_prime_import,
884 .gem_prime_res_obj = msm_gem_prime_res_obj,
885 .gem_prime_pin = msm_gem_prime_pin,
886 .gem_prime_unpin = msm_gem_prime_unpin,
887 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
888 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
889 .gem_prime_vmap = msm_gem_prime_vmap,
890 .gem_prime_vunmap = msm_gem_prime_vunmap,
891 .gem_prime_mmap = msm_gem_prime_mmap,
892 #ifdef CONFIG_DEBUG_FS
893 .debugfs_init = msm_debugfs_init,
895 .ioctls = msm_ioctls,
896 .num_ioctls = ARRAY_SIZE(msm_ioctls),
899 .desc = "MSM Snapdragon DRM",
901 .major = MSM_VERSION_MAJOR,
902 .minor = MSM_VERSION_MINOR,
903 .patchlevel = MSM_VERSION_PATCHLEVEL,
906 #ifdef CONFIG_PM_SLEEP
907 static int msm_pm_suspend(struct device *dev)
909 struct drm_device *ddev = dev_get_drvdata(dev);
911 drm_kms_helper_poll_disable(ddev);
916 static int msm_pm_resume(struct device *dev)
918 struct drm_device *ddev = dev_get_drvdata(dev);
920 drm_kms_helper_poll_enable(ddev);
927 static int msm_runtime_suspend(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_disable(priv->mdss);
940 static int msm_runtime_resume(struct device *dev)
942 struct drm_device *ddev = dev_get_drvdata(dev);
943 struct msm_drm_private *priv = ddev->dev_private;
948 return msm_mdss_enable(priv->mdss);
954 static const struct dev_pm_ops msm_pm_ops = {
955 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
956 SET_RUNTIME_PM_OPS(msm_runtime_suspend, msm_runtime_resume, NULL)
960 * Componentized driver support:
964 * NOTE: duplication of the same code as exynos or imx (or probably any other).
965 * so probably some room for some helpers
967 static int compare_of(struct device *dev, void *data)
969 return dev->of_node == data;
973 * Identify what components need to be added by parsing what remote-endpoints
974 * our MDP output ports are connected to. In the case of LVDS on MDP4, there
975 * is no external component that we need to add since LVDS is within MDP4
978 static int add_components_mdp(struct device *mdp_dev,
979 struct component_match **matchptr)
981 struct device_node *np = mdp_dev->of_node;
982 struct device_node *ep_node;
983 struct device *master_dev;
986 * on MDP4 based platforms, the MDP platform device is the component
987 * master that adds other display interface components to itself.
989 * on MDP5 based platforms, the MDSS platform device is the component
990 * master that adds MDP5 and other display interface components to
993 if (of_device_is_compatible(np, "qcom,mdp4"))
994 master_dev = mdp_dev;
996 master_dev = mdp_dev->parent;
998 for_each_endpoint_of_node(np, ep_node) {
999 struct device_node *intf;
1000 struct of_endpoint ep;
1003 ret = of_graph_parse_endpoint(ep_node, &ep);
1005 dev_err(mdp_dev, "unable to parse port endpoint\n");
1006 of_node_put(ep_node);
1011 * The LCDC/LVDS port on MDP4 is a speacial case where the
1012 * remote-endpoint isn't a component that we need to add
1014 if (of_device_is_compatible(np, "qcom,mdp4") &&
1019 * It's okay if some of the ports don't have a remote endpoint
1020 * specified. It just means that the port isn't connected to
1021 * any external interface.
1023 intf = of_graph_get_remote_port_parent(ep_node);
1027 drm_of_component_match_add(master_dev, matchptr, compare_of,
1035 static int compare_name_mdp(struct device *dev, void *data)
1037 return (strstr(dev_name(dev), "mdp") != NULL);
1040 static int add_display_components(struct device *dev,
1041 struct component_match **matchptr)
1043 struct device *mdp_dev;
1047 * MDP5 based devices don't have a flat hierarchy. There is a top level
1048 * parent: MDSS, and children: MDP5, DSI, HDMI, eDP etc. Populate the
1049 * children devices, find the MDP5 node, and then add the interfaces
1050 * to our components list.
1052 if (of_device_is_compatible(dev->of_node, "qcom,mdss")) {
1053 ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
1055 dev_err(dev, "failed to populate children devices\n");
1059 mdp_dev = device_find_child(dev, NULL, compare_name_mdp);
1061 dev_err(dev, "failed to find MDSS MDP node\n");
1062 of_platform_depopulate(dev);
1066 put_device(mdp_dev);
1068 /* add the MDP component itself */
1069 drm_of_component_match_add(dev, matchptr, compare_of,
1076 ret = add_components_mdp(mdp_dev, matchptr);
1078 of_platform_depopulate(dev);
1084 * We don't know what's the best binding to link the gpu with the drm device.
1085 * Fow now, we just hunt for all the possible gpus that we support, and add them
1088 static const struct of_device_id msm_gpu_match[] = {
1089 { .compatible = "qcom,adreno" },
1090 { .compatible = "qcom,adreno-3xx" },
1091 { .compatible = "qcom,kgsl-3d0" },
1095 static int add_gpu_components(struct device *dev,
1096 struct component_match **matchptr)
1098 struct device_node *np;
1100 np = of_find_matching_node(NULL, msm_gpu_match);
1104 drm_of_component_match_add(dev, matchptr, compare_of, np);
1111 static int msm_drm_bind(struct device *dev)
1113 return msm_drm_init(dev, &msm_driver);
1116 static void msm_drm_unbind(struct device *dev)
1118 msm_drm_uninit(dev);
1121 static const struct component_master_ops msm_drm_ops = {
1122 .bind = msm_drm_bind,
1123 .unbind = msm_drm_unbind,
1130 static int msm_pdev_probe(struct platform_device *pdev)
1132 struct component_match *match = NULL;
1135 ret = add_display_components(&pdev->dev, &match);
1139 ret = add_gpu_components(&pdev->dev, &match);
1143 /* on all devices that I am aware of, iommu's which can map
1144 * any address the cpu can see are used:
1146 ret = dma_set_mask_and_coherent(&pdev->dev, ~0);
1150 return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
1153 static int msm_pdev_remove(struct platform_device *pdev)
1155 component_master_del(&pdev->dev, &msm_drm_ops);
1156 of_platform_depopulate(&pdev->dev);
1161 static const struct of_device_id dt_match[] = {
1162 { .compatible = "qcom,mdp4", .data = (void *)4 }, /* MDP4 */
1163 { .compatible = "qcom,mdss", .data = (void *)5 }, /* MDP5 MDSS */
1166 MODULE_DEVICE_TABLE(of, dt_match);
1168 static struct platform_driver msm_platform_driver = {
1169 .probe = msm_pdev_probe,
1170 .remove = msm_pdev_remove,
1173 .of_match_table = dt_match,
1178 static int __init msm_drm_register(void)
1187 msm_hdmi_register();
1189 return platform_driver_register(&msm_platform_driver);
1192 static void __exit msm_drm_unregister(void)
1195 platform_driver_unregister(&msm_platform_driver);
1196 msm_hdmi_unregister();
1197 adreno_unregister();
1198 msm_edp_unregister();
1199 msm_dsi_unregister();
1200 msm_mdp_unregister();
1203 module_init(msm_drm_register);
1204 module_exit(msm_drm_unregister);
1207 MODULE_DESCRIPTION("MSM DRM Driver");
1208 MODULE_LICENSE("GPL");