/* * Copyright (C) 2013 Red Hat * Author: Rob Clark * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see . */ #include "msm_drv.h" #include "msm_gpu.h" #include "msm_kms.h" static void msm_fb_output_poll_changed(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; if (priv->fbdev) drm_fb_helper_hotplug_event(priv->fbdev); } static const struct drm_mode_config_funcs mode_config_funcs = { .fb_create = msm_framebuffer_create, .output_poll_changed = msm_fb_output_poll_changed, }; int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu) { struct msm_drm_private *priv = dev->dev_private; int idx = priv->num_mmus++; if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus))) return -EINVAL; priv->mmus[idx] = mmu; return idx; } #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING static bool reglog = false; MODULE_PARM_DESC(reglog, "Enable register read/write logging"); module_param(reglog, bool, 0600); #else #define reglog 0 #endif static char *vram; MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU"); module_param(vram, charp, 0); /* * Util/helpers: */ void __iomem *msm_ioremap(struct platform_device *pdev, const char *name, const char *dbgname) { struct resource *res; unsigned long size; void __iomem *ptr; if (name) res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); else res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "failed to get memory resource: %s\n", name); return ERR_PTR(-EINVAL); } size = resource_size(res); ptr = devm_ioremap_nocache(&pdev->dev, res->start, size); if (!ptr) { dev_err(&pdev->dev, "failed to ioremap: %s\n", name); return ERR_PTR(-ENOMEM); } if (reglog) printk(KERN_DEBUG "IO:region %s %08x %08lx\n", dbgname, (u32)ptr, size); return ptr; } void msm_writel(u32 data, void __iomem *addr) { if (reglog) printk(KERN_DEBUG "IO:W %08x %08x\n", (u32)addr, data); writel(data, addr); } u32 msm_readl(const void __iomem *addr) { u32 val = readl(addr); if (reglog) printk(KERN_ERR "IO:R %08x %08x\n", (u32)addr, val); return val; } /* * DRM operations: */ static int msm_unload(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; struct msm_gpu *gpu = priv->gpu; drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); drm_vblank_cleanup(dev); pm_runtime_get_sync(dev->dev); drm_irq_uninstall(dev); pm_runtime_put_sync(dev->dev); flush_workqueue(priv->wq); destroy_workqueue(priv->wq); if (kms) { pm_runtime_disable(dev->dev); kms->funcs->destroy(kms); } if (gpu) { mutex_lock(&dev->struct_mutex); gpu->funcs->pm_suspend(gpu); gpu->funcs->destroy(gpu); mutex_unlock(&dev->struct_mutex); } if (priv->vram.paddr) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs); drm_mm_takedown(&priv->vram.mm); dma_free_attrs(dev->dev, priv->vram.size, NULL, priv->vram.paddr, &attrs); } component_unbind_all(dev->dev, dev); dev->dev_private = NULL; kfree(priv); return 0; } static int get_mdp_ver(struct platform_device *pdev) { #ifdef CONFIG_OF static const struct of_device_id match_types[] = { { .compatible = "qcom,mdss_mdp", .data = (void *)5, }, { /* end node */ } }; struct device *dev = &pdev->dev; const struct of_device_id *match; match = of_match_node(match_types, dev->of_node); if (match) return (int)match->data; #endif return 4; } static int msm_load(struct drm_device *dev, unsigned long flags) { struct platform_device *pdev = dev->platformdev; struct msm_drm_private *priv; struct msm_kms *kms; int ret; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) { dev_err(dev->dev, "failed to allocate private data\n"); return -ENOMEM; } dev->dev_private = priv; priv->wq = alloc_ordered_workqueue("msm", 0); init_waitqueue_head(&priv->fence_event); INIT_LIST_HEAD(&priv->inactive_list); INIT_LIST_HEAD(&priv->fence_cbs); drm_mode_config_init(dev); /* if we have no IOMMU, then we need to use carveout allocator. * Grab the entire CMA chunk carved out in early startup in * mach-msm: */ if (!iommu_present(&platform_bus_type)) { DEFINE_DMA_ATTRS(attrs); unsigned long size; void *p; DBG("using %s VRAM carveout", vram); size = memparse(vram, NULL); priv->vram.size = size; drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1); dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); /* note that for no-kernel-mapping, the vaddr returned * is bogus, but non-null if allocation succeeded: */ p = dma_alloc_attrs(dev->dev, size, &priv->vram.paddr, GFP_KERNEL, &attrs); if (!p) { dev_err(dev->dev, "failed to allocate VRAM\n"); priv->vram.paddr = 0; ret = -ENOMEM; goto fail; } dev_info(dev->dev, "VRAM: %08x->%08x\n", (uint32_t)priv->vram.paddr, (uint32_t)(priv->vram.paddr + size)); } platform_set_drvdata(pdev, dev); /* Bind all our sub-components: */ ret = component_bind_all(dev->dev, dev); if (ret) return ret; switch (get_mdp_ver(pdev)) { case 4: kms = mdp4_kms_init(dev); break; case 5: kms = mdp5_kms_init(dev); break; default: kms = ERR_PTR(-ENODEV); break; } if (IS_ERR(kms)) { /* * NOTE: once we have GPU support, having no kms should not * be considered fatal.. ideally we would still support gpu * and (for example) use dmabuf/prime to share buffers with * imx drm driver on iMX5 */ dev_err(dev->dev, "failed to load kms\n"); ret = PTR_ERR(kms); goto fail; } priv->kms = kms; if (kms) { pm_runtime_enable(dev->dev); ret = kms->funcs->hw_init(kms); if (ret) { dev_err(dev->dev, "kms hw init failed: %d\n", ret); goto fail; } } dev->mode_config.min_width = 0; dev->mode_config.min_height = 0; dev->mode_config.max_width = 2048; dev->mode_config.max_height = 2048; dev->mode_config.funcs = &mode_config_funcs; ret = drm_vblank_init(dev, priv->num_crtcs); if (ret < 0) { dev_err(dev->dev, "failed to initialize vblank\n"); goto fail; } pm_runtime_get_sync(dev->dev); ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0)); pm_runtime_put_sync(dev->dev); if (ret < 0) { dev_err(dev->dev, "failed to install IRQ handler\n"); goto fail; } #ifdef CONFIG_DRM_MSM_FBDEV priv->fbdev = msm_fbdev_init(dev); #endif ret = msm_debugfs_late_init(dev); if (ret) goto fail; drm_kms_helper_poll_init(dev); return 0; fail: msm_unload(dev); return ret; } static void load_gpu(struct drm_device *dev) { static DEFINE_MUTEX(init_lock); struct msm_drm_private *priv = dev->dev_private; struct msm_gpu *gpu; mutex_lock(&init_lock); if (priv->gpu) goto out; gpu = a3xx_gpu_init(dev); if (IS_ERR(gpu)) { dev_warn(dev->dev, "failed to load a3xx gpu\n"); gpu = NULL; /* not fatal */ } if (gpu) { int ret; mutex_lock(&dev->struct_mutex); gpu->funcs->pm_resume(gpu); mutex_unlock(&dev->struct_mutex); ret = gpu->funcs->hw_init(gpu); if (ret) { dev_err(dev->dev, "gpu hw init failed: %d\n", ret); gpu->funcs->destroy(gpu); gpu = NULL; } else { /* give inactive pm a chance to kick in: */ msm_gpu_retire(gpu); } } priv->gpu = gpu; out: mutex_unlock(&init_lock); } static int msm_open(struct drm_device *dev, struct drm_file *file) { struct msm_file_private *ctx; /* For now, load gpu on open.. to avoid the requirement of having * firmware in the initrd. */ load_gpu(dev); ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; file->driver_priv = ctx; return 0; } static void msm_preclose(struct drm_device *dev, struct drm_file *file) { struct msm_drm_private *priv = dev->dev_private; struct msm_file_private *ctx = file->driver_priv; struct msm_kms *kms = priv->kms; if (kms) kms->funcs->preclose(kms, file); mutex_lock(&dev->struct_mutex); if (ctx == priv->lastctx) priv->lastctx = NULL; mutex_unlock(&dev->struct_mutex); kfree(ctx); } static void msm_lastclose(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; if (priv->fbdev) drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev); } static irqreturn_t msm_irq(int irq, void *arg) { struct drm_device *dev = arg; struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; BUG_ON(!kms); return kms->funcs->irq(kms); } static void msm_irq_preinstall(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; BUG_ON(!kms); kms->funcs->irq_preinstall(kms); } static int msm_irq_postinstall(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; BUG_ON(!kms); return kms->funcs->irq_postinstall(kms); } static void msm_irq_uninstall(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; BUG_ON(!kms); kms->funcs->irq_uninstall(kms); } static int msm_enable_vblank(struct drm_device *dev, int crtc_id) { struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; if (!kms) return -ENXIO; DBG("dev=%p, crtc=%d", dev, crtc_id); return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]); } static void msm_disable_vblank(struct drm_device *dev, int crtc_id) { struct msm_drm_private *priv = dev->dev_private; struct msm_kms *kms = priv->kms; if (!kms) return; DBG("dev=%p, crtc=%d", dev, crtc_id); kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]); } /* * DRM debugfs: */ #ifdef CONFIG_DEBUG_FS static int msm_gpu_show(struct drm_device *dev, struct seq_file *m) { struct msm_drm_private *priv = dev->dev_private; struct msm_gpu *gpu = priv->gpu; if (gpu) { seq_printf(m, "%s Status:\n", gpu->name); gpu->funcs->show(gpu, m); } return 0; } static int msm_gem_show(struct drm_device *dev, struct seq_file *m) { struct msm_drm_private *priv = dev->dev_private; struct msm_gpu *gpu = priv->gpu; if (gpu) { seq_printf(m, "Active Objects (%s):\n", gpu->name); msm_gem_describe_objects(&gpu->active_list, m); } seq_printf(m, "Inactive Objects:\n"); msm_gem_describe_objects(&priv->inactive_list, m); return 0; } static int msm_mm_show(struct drm_device *dev, struct seq_file *m) { return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm); } static int msm_fb_show(struct drm_device *dev, struct seq_file *m) { struct msm_drm_private *priv = dev->dev_private; struct drm_framebuffer *fb, *fbdev_fb = NULL; if (priv->fbdev) { seq_printf(m, "fbcon "); fbdev_fb = priv->fbdev->fb; msm_framebuffer_describe(fbdev_fb, m); } mutex_lock(&dev->mode_config.fb_lock); list_for_each_entry(fb, &dev->mode_config.fb_list, head) { if (fb == fbdev_fb) continue; seq_printf(m, "user "); msm_framebuffer_describe(fb, m); } mutex_unlock(&dev->mode_config.fb_lock); return 0; } static int show_locked(struct seq_file *m, void *arg) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; int (*show)(struct drm_device *dev, struct seq_file *m) = node->info_ent->data; int ret; ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; ret = show(dev, m); mutex_unlock(&dev->struct_mutex); return ret; } static struct drm_info_list msm_debugfs_list[] = { {"gpu", show_locked, 0, msm_gpu_show}, {"gem", show_locked, 0, msm_gem_show}, { "mm", show_locked, 0, msm_mm_show }, { "fb", show_locked, 0, msm_fb_show }, }; static int late_init_minor(struct drm_minor *minor) { int ret; if (!minor) return 0; ret = msm_rd_debugfs_init(minor); if (ret) { dev_err(minor->dev->dev, "could not install rd debugfs\n"); return ret; } ret = msm_perf_debugfs_init(minor); if (ret) { dev_err(minor->dev->dev, "could not install perf debugfs\n"); return ret; } return 0; } int msm_debugfs_late_init(struct drm_device *dev) { int ret; ret = late_init_minor(dev->primary); if (ret) return ret; ret = late_init_minor(dev->render); if (ret) return ret; ret = late_init_minor(dev->control); return ret; } static int msm_debugfs_init(struct drm_minor *minor) { struct drm_device *dev = minor->dev; int ret; ret = drm_debugfs_create_files(msm_debugfs_list, ARRAY_SIZE(msm_debugfs_list), minor->debugfs_root, minor); if (ret) { dev_err(dev->dev, "could not install msm_debugfs_list\n"); return ret; } return 0; } static void msm_debugfs_cleanup(struct drm_minor *minor) { drm_debugfs_remove_files(msm_debugfs_list, ARRAY_SIZE(msm_debugfs_list), minor); if (!minor->dev->dev_private) return; msm_rd_debugfs_cleanup(minor); msm_perf_debugfs_cleanup(minor); } #endif /* * Fences: */ int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence, struct timespec *timeout) { struct msm_drm_private *priv = dev->dev_private; int ret; if (!priv->gpu) return 0; if (fence > priv->gpu->submitted_fence) { DRM_ERROR("waiting on invalid fence: %u (of %u)\n", fence, priv->gpu->submitted_fence); return -EINVAL; } if (!timeout) { /* no-wait: */ ret = fence_completed(dev, fence) ? 0 : -EBUSY; } else { unsigned long timeout_jiffies = timespec_to_jiffies(timeout); unsigned long start_jiffies = jiffies; unsigned long remaining_jiffies; if (time_after(start_jiffies, timeout_jiffies)) remaining_jiffies = 0; else remaining_jiffies = timeout_jiffies - start_jiffies; ret = wait_event_interruptible_timeout(priv->fence_event, fence_completed(dev, fence), remaining_jiffies); if (ret == 0) { DBG("timeout waiting for fence: %u (completed: %u)", fence, priv->completed_fence); ret = -ETIMEDOUT; } else if (ret != -ERESTARTSYS) { ret = 0; } } return ret; } /* called from workqueue */ void msm_update_fence(struct drm_device *dev, uint32_t fence) { struct msm_drm_private *priv = dev->dev_private; mutex_lock(&dev->struct_mutex); priv->completed_fence = max(fence, priv->completed_fence); while (!list_empty(&priv->fence_cbs)) { struct msm_fence_cb *cb; cb = list_first_entry(&priv->fence_cbs, struct msm_fence_cb, work.entry); if (cb->fence > priv->completed_fence) break; list_del_init(&cb->work.entry); queue_work(priv->wq, &cb->work); } mutex_unlock(&dev->struct_mutex); wake_up_all(&priv->fence_event); } void __msm_fence_worker(struct work_struct *work) { struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work); cb->func(cb); } /* * DRM ioctls: */ static int msm_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file) { struct msm_drm_private *priv = dev->dev_private; struct drm_msm_param *args = data; struct msm_gpu *gpu; /* for now, we just have 3d pipe.. eventually this would need to * be more clever to dispatch to appropriate gpu module: */ if (args->pipe != MSM_PIPE_3D0) return -EINVAL; gpu = priv->gpu; if (!gpu) return -ENXIO; return gpu->funcs->get_param(gpu, args->param, &args->value); } static int msm_ioctl_gem_new(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_msm_gem_new *args = data; if (args->flags & ~MSM_BO_FLAGS) { DRM_ERROR("invalid flags: %08x\n", args->flags); return -EINVAL; } return msm_gem_new_handle(dev, file, args->size, args->flags, &args->handle); } #define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec }) static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_msm_gem_cpu_prep *args = data; struct drm_gem_object *obj; int ret; if (args->op & ~MSM_PREP_FLAGS) { DRM_ERROR("invalid op: %08x\n", args->op); return -EINVAL; } obj = drm_gem_object_lookup(dev, file, args->handle); if (!obj) return -ENOENT; ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout)); drm_gem_object_unreference_unlocked(obj); return ret; } static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_msm_gem_cpu_fini *args = data; struct drm_gem_object *obj; int ret; obj = drm_gem_object_lookup(dev, file, args->handle); if (!obj) return -ENOENT; ret = msm_gem_cpu_fini(obj); drm_gem_object_unreference_unlocked(obj); return ret; } static int msm_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_msm_gem_info *args = data; struct drm_gem_object *obj; int ret = 0; if (args->pad) return -EINVAL; obj = drm_gem_object_lookup(dev, file, args->handle); if (!obj) return -ENOENT; args->offset = msm_gem_mmap_offset(obj); drm_gem_object_unreference_unlocked(obj); return ret; } static int msm_ioctl_wait_fence(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_msm_wait_fence *args = data; if (args->pad) { DRM_ERROR("invalid pad: %08x\n", args->pad); return -EINVAL; } return msm_wait_fence_interruptable(dev, args->fence, &TS(args->timeout)); } static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), }; static const struct vm_operations_struct vm_ops = { .fault = msm_gem_fault, .open = drm_gem_vm_open, .close = drm_gem_vm_close, }; static const struct file_operations fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = drm_compat_ioctl, #endif .poll = drm_poll, .read = drm_read, .llseek = no_llseek, .mmap = msm_gem_mmap, }; static struct drm_driver msm_driver = { .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_PRIME | DRIVER_RENDER | DRIVER_MODESET, .load = msm_load, .unload = msm_unload, .open = msm_open, .preclose = msm_preclose, .lastclose = msm_lastclose, .set_busid = drm_platform_set_busid, .irq_handler = msm_irq, .irq_preinstall = msm_irq_preinstall, .irq_postinstall = msm_irq_postinstall, .irq_uninstall = msm_irq_uninstall, .get_vblank_counter = drm_vblank_count, .enable_vblank = msm_enable_vblank, .disable_vblank = msm_disable_vblank, .gem_free_object = msm_gem_free_object, .gem_vm_ops = &vm_ops, .dumb_create = msm_gem_dumb_create, .dumb_map_offset = msm_gem_dumb_map_offset, .dumb_destroy = drm_gem_dumb_destroy, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = drm_gem_prime_export, .gem_prime_import = drm_gem_prime_import, .gem_prime_pin = msm_gem_prime_pin, .gem_prime_unpin = msm_gem_prime_unpin, .gem_prime_get_sg_table = msm_gem_prime_get_sg_table, .gem_prime_import_sg_table = msm_gem_prime_import_sg_table, .gem_prime_vmap = msm_gem_prime_vmap, .gem_prime_vunmap = msm_gem_prime_vunmap, #ifdef CONFIG_DEBUG_FS .debugfs_init = msm_debugfs_init, .debugfs_cleanup = msm_debugfs_cleanup, #endif .ioctls = msm_ioctls, .num_ioctls = DRM_MSM_NUM_IOCTLS, .fops = &fops, .name = "msm", .desc = "MSM Snapdragon DRM", .date = "20130625", .major = 1, .minor = 0, }; #ifdef CONFIG_PM_SLEEP static int msm_pm_suspend(struct device *dev) { struct drm_device *ddev = dev_get_drvdata(dev); drm_kms_helper_poll_disable(ddev); return 0; } static int msm_pm_resume(struct device *dev) { struct drm_device *ddev = dev_get_drvdata(dev); drm_kms_helper_poll_enable(ddev); return 0; } #endif static const struct dev_pm_ops msm_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume) }; /* * Componentized driver support: */ #ifdef CONFIG_OF /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx * (or probably any other).. so probably some room for some helpers */ static int compare_of(struct device *dev, void *data) { return dev->of_node == data; } static int add_components(struct device *dev, struct component_match **matchptr, const char *name) { struct device_node *np = dev->of_node; unsigned i; for (i = 0; ; i++) { struct device_node *node; node = of_parse_phandle(np, name, i); if (!node) break; component_match_add(dev, matchptr, compare_of, node); } return 0; } #else static int compare_dev(struct device *dev, void *data) { return dev == data; } #endif static int msm_drm_bind(struct device *dev) { return drm_platform_init(&msm_driver, to_platform_device(dev)); } static void msm_drm_unbind(struct device *dev) { drm_put_dev(platform_get_drvdata(to_platform_device(dev))); } static const struct component_master_ops msm_drm_ops = { .bind = msm_drm_bind, .unbind = msm_drm_unbind, }; /* * Platform driver: */ static int msm_pdev_probe(struct platform_device *pdev) { struct component_match *match = NULL; #ifdef CONFIG_OF add_components(&pdev->dev, &match, "connectors"); add_components(&pdev->dev, &match, "gpus"); #else /* For non-DT case, it kinda sucks. We don't actually have a way * to know whether or not we are waiting for certain devices (or if * they are simply not present). But for non-DT we only need to * care about apq8064/apq8060/etc (all mdp4/a3xx): */ static const char *devnames[] = { "hdmi_msm.0", "kgsl-3d0.0", }; int i; DBG("Adding components.."); for (i = 0; i < ARRAY_SIZE(devnames); i++) { struct device *dev; int ret; dev = bus_find_device_by_name(&platform_bus_type, NULL, devnames[i]); if (!dev) { dev_info(master, "still waiting for %s\n", devnames[i]); return -EPROBE_DEFER; } component_match_add(&pdev->dev, &match, compare_dev, dev); } #endif pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match); } static int msm_pdev_remove(struct platform_device *pdev) { component_master_del(&pdev->dev, &msm_drm_ops); return 0; } static const struct platform_device_id msm_id[] = { { "mdp", 0 }, { } }; static const struct of_device_id dt_match[] = { { .compatible = "qcom,mdp" }, /* mdp4 */ { .compatible = "qcom,mdss_mdp" }, /* mdp5 */ {} }; MODULE_DEVICE_TABLE(of, dt_match); static struct platform_driver msm_platform_driver = { .probe = msm_pdev_probe, .remove = msm_pdev_remove, .driver = { .owner = THIS_MODULE, .name = "msm", .of_match_table = dt_match, .pm = &msm_pm_ops, }, .id_table = msm_id, }; static int __init msm_drm_register(void) { DBG("init"); hdmi_register(); adreno_register(); return platform_driver_register(&msm_platform_driver); } static void __exit msm_drm_unregister(void) { DBG("fini"); platform_driver_unregister(&msm_platform_driver); hdmi_unregister(); adreno_unregister(); } module_init(msm_drm_register); module_exit(msm_drm_unregister); MODULE_AUTHOR("Rob Clark