/* * Copyright (C) 2012 Avionic Design GmbH * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved. * * 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. */ #include #include #include #include #include "drm.h" #include "gem.h" #define DRIVER_NAME "tegra" #define DRIVER_DESC "NVIDIA Tegra graphics" #define DRIVER_DATE "20120330" #define DRIVER_MAJOR 0 #define DRIVER_MINOR 0 #define DRIVER_PATCHLEVEL 0 struct tegra_drm_file { struct list_head contexts; }; static void tegra_atomic_schedule(struct tegra_drm *tegra, struct drm_atomic_state *state) { tegra->commit.state = state; schedule_work(&tegra->commit.work); } static void tegra_atomic_complete(struct tegra_drm *tegra, struct drm_atomic_state *state) { struct drm_device *drm = tegra->drm; /* * Everything below can be run asynchronously without the need to grab * any modeset locks at all under one condition: It must be guaranteed * that the asynchronous work has either been cancelled (if the driver * supports it, which at least requires that the framebuffers get * cleaned up with drm_atomic_helper_cleanup_planes()) or completed * before the new state gets committed on the software side with * drm_atomic_helper_swap_state(). * * This scheme allows new atomic state updates to be prepared and * checked in parallel to the asynchronous completion of the previous * update. Which is important since compositors need to figure out the * composition of the next frame right after having submitted the * current layout. */ drm_atomic_helper_commit_modeset_disables(drm, state); drm_atomic_helper_commit_modeset_enables(drm, state); drm_atomic_helper_commit_planes(drm, state, DRM_PLANE_COMMIT_ACTIVE_ONLY); drm_atomic_helper_wait_for_vblanks(drm, state); drm_atomic_helper_cleanup_planes(drm, state); drm_atomic_state_put(state); } static void tegra_atomic_work(struct work_struct *work) { struct tegra_drm *tegra = container_of(work, struct tegra_drm, commit.work); tegra_atomic_complete(tegra, tegra->commit.state); } static int tegra_atomic_commit(struct drm_device *drm, struct drm_atomic_state *state, bool nonblock) { struct tegra_drm *tegra = drm->dev_private; int err; err = drm_atomic_helper_prepare_planes(drm, state); if (err) return err; /* serialize outstanding nonblocking commits */ mutex_lock(&tegra->commit.lock); flush_work(&tegra->commit.work); /* * This is the point of no return - everything below never fails except * when the hw goes bonghits. Which means we can commit the new state on * the software side now. */ drm_atomic_helper_swap_state(state, true); drm_atomic_state_get(state); if (nonblock) tegra_atomic_schedule(tegra, state); else tegra_atomic_complete(tegra, state); mutex_unlock(&tegra->commit.lock); return 0; } static const struct drm_mode_config_funcs tegra_drm_mode_funcs = { .fb_create = tegra_fb_create, #ifdef CONFIG_DRM_FBDEV_EMULATION .output_poll_changed = tegra_fb_output_poll_changed, #endif .atomic_check = drm_atomic_helper_check, .atomic_commit = tegra_atomic_commit, }; static int tegra_drm_load(struct drm_device *drm, unsigned long flags) { struct host1x_device *device = to_host1x_device(drm->dev); struct tegra_drm *tegra; int err; tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); if (!tegra) return -ENOMEM; if (iommu_present(&platform_bus_type)) { struct iommu_domain_geometry *geometry; u64 start, end; tegra->domain = iommu_domain_alloc(&platform_bus_type); if (!tegra->domain) { err = -ENOMEM; goto free; } geometry = &tegra->domain->geometry; start = geometry->aperture_start; end = geometry->aperture_end; DRM_DEBUG_DRIVER("IOMMU aperture initialized (%#llx-%#llx)\n", start, end); drm_mm_init(&tegra->mm, start, end - start + 1); } mutex_init(&tegra->clients_lock); INIT_LIST_HEAD(&tegra->clients); mutex_init(&tegra->commit.lock); INIT_WORK(&tegra->commit.work, tegra_atomic_work); drm->dev_private = tegra; tegra->drm = drm; drm_mode_config_init(drm); drm->mode_config.min_width = 0; drm->mode_config.min_height = 0; drm->mode_config.max_width = 4096; drm->mode_config.max_height = 4096; drm->mode_config.funcs = &tegra_drm_mode_funcs; err = tegra_drm_fb_prepare(drm); if (err < 0) goto config; drm_kms_helper_poll_init(drm); err = host1x_device_init(device); if (err < 0) goto fbdev; /* * We don't use the drm_irq_install() helpers provided by the DRM * core, so we need to set this manually in order to allow the * DRM_IOCTL_WAIT_VBLANK to operate correctly. */ drm->irq_enabled = true; /* syncpoints are used for full 32-bit hardware VBLANK counters */ drm->max_vblank_count = 0xffffffff; err = drm_vblank_init(drm, drm->mode_config.num_crtc); if (err < 0) goto device; drm_mode_config_reset(drm); err = tegra_drm_fb_init(drm); if (err < 0) goto vblank; return 0; vblank: drm_vblank_cleanup(drm); device: host1x_device_exit(device); fbdev: drm_kms_helper_poll_fini(drm); tegra_drm_fb_free(drm); config: drm_mode_config_cleanup(drm); if (tegra->domain) { iommu_domain_free(tegra->domain); drm_mm_takedown(&tegra->mm); } free: kfree(tegra); return err; } static void tegra_drm_unload(struct drm_device *drm) { struct host1x_device *device = to_host1x_device(drm->dev); struct tegra_drm *tegra = drm->dev_private; int err; drm_kms_helper_poll_fini(drm); tegra_drm_fb_exit(drm); drm_mode_config_cleanup(drm); drm_vblank_cleanup(drm); err = host1x_device_exit(device); if (err < 0) return; if (tegra->domain) { iommu_domain_free(tegra->domain); drm_mm_takedown(&tegra->mm); } kfree(tegra); } static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) { struct tegra_drm_file *fpriv; fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); if (!fpriv) return -ENOMEM; INIT_LIST_HEAD(&fpriv->contexts); filp->driver_priv = fpriv; return 0; } static void tegra_drm_context_free(struct tegra_drm_context *context) { context->client->ops->close_channel(context); kfree(context); } static void tegra_drm_lastclose(struct drm_device *drm) { #ifdef CONFIG_DRM_FBDEV_EMULATION struct tegra_drm *tegra = drm->dev_private; tegra_fbdev_restore_mode(tegra->fbdev); #endif } static struct host1x_bo * host1x_bo_lookup(struct drm_file *file, u32 handle) { struct drm_gem_object *gem; struct tegra_bo *bo; gem = drm_gem_object_lookup(file, handle); if (!gem) return NULL; drm_gem_object_unreference_unlocked(gem); bo = to_tegra_bo(gem); return &bo->base; } static int host1x_reloc_copy_from_user(struct host1x_reloc *dest, struct drm_tegra_reloc __user *src, struct drm_device *drm, struct drm_file *file) { u32 cmdbuf, target; int err; err = get_user(cmdbuf, &src->cmdbuf.handle); if (err < 0) return err; err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset); if (err < 0) return err; err = get_user(target, &src->target.handle); if (err < 0) return err; err = get_user(dest->target.offset, &src->target.offset); if (err < 0) return err; err = get_user(dest->shift, &src->shift); if (err < 0) return err; dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf); if (!dest->cmdbuf.bo) return -ENOENT; dest->target.bo = host1x_bo_lookup(file, target); if (!dest->target.bo) return -ENOENT; return 0; } int tegra_drm_submit(struct tegra_drm_context *context, struct drm_tegra_submit *args, struct drm_device *drm, struct drm_file *file) { unsigned int num_cmdbufs = args->num_cmdbufs; unsigned int num_relocs = args->num_relocs; unsigned int num_waitchks = args->num_waitchks; struct drm_tegra_cmdbuf __user *cmdbufs = (void __user *)(uintptr_t)args->cmdbufs; struct drm_tegra_reloc __user *relocs = (void __user *)(uintptr_t)args->relocs; struct drm_tegra_waitchk __user *waitchks = (void __user *)(uintptr_t)args->waitchks; struct drm_tegra_syncpt syncpt; struct host1x_job *job; int err; /* We don't yet support other than one syncpt_incr struct per submit */ if (args->num_syncpts != 1) return -EINVAL; job = host1x_job_alloc(context->channel, args->num_cmdbufs, args->num_relocs, args->num_waitchks); if (!job) return -ENOMEM; job->num_relocs = args->num_relocs; job->num_waitchk = args->num_waitchks; job->client = (u32)args->context; job->class = context->client->base.class; job->serialize = true; while (num_cmdbufs) { struct drm_tegra_cmdbuf cmdbuf; struct host1x_bo *bo; if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) { err = -EFAULT; goto fail; } bo = host1x_bo_lookup(file, cmdbuf.handle); if (!bo) { err = -ENOENT; goto fail; } host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset); num_cmdbufs--; cmdbufs++; } /* copy and resolve relocations from submit */ while (num_relocs--) { err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs], &relocs[num_relocs], drm, file); if (err < 0) goto fail; } if (copy_from_user(job->waitchk, waitchks, sizeof(*waitchks) * num_waitchks)) { err = -EFAULT; goto fail; } if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts, sizeof(syncpt))) { err = -EFAULT; goto fail; } job->is_addr_reg = context->client->ops->is_addr_reg; job->syncpt_incrs = syncpt.incrs; job->syncpt_id = syncpt.id; job->timeout = 10000; if (args->timeout && args->timeout < 10000) job->timeout = args->timeout; err = host1x_job_pin(job, context->client->base.dev); if (err) goto fail; err = host1x_job_submit(job); if (err) goto fail_submit; args->fence = job->syncpt_end; host1x_job_put(job); return 0; fail_submit: host1x_job_unpin(job); fail: host1x_job_put(job); return err; } #ifdef CONFIG_DRM_TEGRA_STAGING static struct tegra_drm_context *tegra_drm_get_context(__u64 context) { return (struct tegra_drm_context *)(uintptr_t)context; } static bool tegra_drm_file_owns_context(struct tegra_drm_file *file, struct tegra_drm_context *context) { struct tegra_drm_context *ctx; list_for_each_entry(ctx, &file->contexts, list) if (ctx == context) return true; return false; } static int tegra_gem_create(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_create *args = data; struct tegra_bo *bo; bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags, &args->handle); if (IS_ERR(bo)) return PTR_ERR(bo); return 0; } static int tegra_gem_mmap(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_mmap *args = data; struct drm_gem_object *gem; struct tegra_bo *bo; gem = drm_gem_object_lookup(file, args->handle); if (!gem) return -EINVAL; bo = to_tegra_bo(gem); args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node); drm_gem_object_unreference_unlocked(gem); return 0; } static int tegra_syncpt_read(struct drm_device *drm, void *data, struct drm_file *file) { struct host1x *host = dev_get_drvdata(drm->dev->parent); struct drm_tegra_syncpt_read *args = data; struct host1x_syncpt *sp; sp = host1x_syncpt_get(host, args->id); if (!sp) return -EINVAL; args->value = host1x_syncpt_read_min(sp); return 0; } static int tegra_syncpt_incr(struct drm_device *drm, void *data, struct drm_file *file) { struct host1x *host1x = dev_get_drvdata(drm->dev->parent); struct drm_tegra_syncpt_incr *args = data; struct host1x_syncpt *sp; sp = host1x_syncpt_get(host1x, args->id); if (!sp) return -EINVAL; return host1x_syncpt_incr(sp); } static int tegra_syncpt_wait(struct drm_device *drm, void *data, struct drm_file *file) { struct host1x *host1x = dev_get_drvdata(drm->dev->parent); struct drm_tegra_syncpt_wait *args = data; struct host1x_syncpt *sp; sp = host1x_syncpt_get(host1x, args->id); if (!sp) return -EINVAL; return host1x_syncpt_wait(sp, args->thresh, args->timeout, &args->value); } static int tegra_open_channel(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct tegra_drm *tegra = drm->dev_private; struct drm_tegra_open_channel *args = data; struct tegra_drm_context *context; struct tegra_drm_client *client; int err = -ENODEV; context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) return -ENOMEM; list_for_each_entry(client, &tegra->clients, list) if (client->base.class == args->client) { err = client->ops->open_channel(client, context); if (err) break; list_add(&context->list, &fpriv->contexts); args->context = (uintptr_t)context; context->client = client; return 0; } kfree(context); return err; } static int tegra_close_channel(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_close_channel *args = data; struct tegra_drm_context *context; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -EINVAL; list_del(&context->list); tegra_drm_context_free(context); return 0; } static int tegra_get_syncpt(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_get_syncpt *args = data; struct tegra_drm_context *context; struct host1x_syncpt *syncpt; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -ENODEV; if (args->index >= context->client->base.num_syncpts) return -EINVAL; syncpt = context->client->base.syncpts[args->index]; args->id = host1x_syncpt_id(syncpt); return 0; } static int tegra_submit(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_submit *args = data; struct tegra_drm_context *context; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -ENODEV; return context->client->ops->submit(context, args, drm, file); } static int tegra_get_syncpt_base(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_get_syncpt_base *args = data; struct tegra_drm_context *context; struct host1x_syncpt_base *base; struct host1x_syncpt *syncpt; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -ENODEV; if (args->syncpt >= context->client->base.num_syncpts) return -EINVAL; syncpt = context->client->base.syncpts[args->syncpt]; base = host1x_syncpt_get_base(syncpt); if (!base) return -ENXIO; args->id = host1x_syncpt_base_id(base); return 0; } static int tegra_gem_set_tiling(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_set_tiling *args = data; enum tegra_bo_tiling_mode mode; struct drm_gem_object *gem; unsigned long value = 0; struct tegra_bo *bo; switch (args->mode) { case DRM_TEGRA_GEM_TILING_MODE_PITCH: mode = TEGRA_BO_TILING_MODE_PITCH; if (args->value != 0) return -EINVAL; break; case DRM_TEGRA_GEM_TILING_MODE_TILED: mode = TEGRA_BO_TILING_MODE_TILED; if (args->value != 0) return -EINVAL; break; case DRM_TEGRA_GEM_TILING_MODE_BLOCK: mode = TEGRA_BO_TILING_MODE_BLOCK; if (args->value > 5) return -EINVAL; value = args->value; break; default: return -EINVAL; } gem = drm_gem_object_lookup(file, args->handle); if (!gem) return -ENOENT; bo = to_tegra_bo(gem); bo->tiling.mode = mode; bo->tiling.value = value; drm_gem_object_unreference_unlocked(gem); return 0; } static int tegra_gem_get_tiling(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_get_tiling *args = data; struct drm_gem_object *gem; struct tegra_bo *bo; int err = 0; gem = drm_gem_object_lookup(file, args->handle); if (!gem) return -ENOENT; bo = to_tegra_bo(gem); switch (bo->tiling.mode) { case TEGRA_BO_TILING_MODE_PITCH: args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH; args->value = 0; break; case TEGRA_BO_TILING_MODE_TILED: args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED; args->value = 0; break; case TEGRA_BO_TILING_MODE_BLOCK: args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK; args->value = bo->tiling.value; break; default: err = -EINVAL; break; } drm_gem_object_unreference_unlocked(gem); return err; } static int tegra_gem_set_flags(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_set_flags *args = data; struct drm_gem_object *gem; struct tegra_bo *bo; if (args->flags & ~DRM_TEGRA_GEM_FLAGS) return -EINVAL; gem = drm_gem_object_lookup(file, args->handle); if (!gem) return -ENOENT; bo = to_tegra_bo(gem); bo->flags = 0; if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP) bo->flags |= TEGRA_BO_BOTTOM_UP; drm_gem_object_unreference_unlocked(gem); return 0; } static int tegra_gem_get_flags(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_get_flags *args = data; struct drm_gem_object *gem; struct tegra_bo *bo; gem = drm_gem_object_lookup(file, args->handle); if (!gem) return -ENOENT; bo = to_tegra_bo(gem); args->flags = 0; if (bo->flags & TEGRA_BO_BOTTOM_UP) args->flags |= DRM_TEGRA_GEM_BOTTOM_UP; drm_gem_object_unreference_unlocked(gem); return 0; } #endif static const struct drm_ioctl_desc tegra_drm_ioctls[] = { #ifdef CONFIG_DRM_TEGRA_STAGING DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, 0), DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, 0), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, 0), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, 0), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, 0), DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, 0), DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, 0), DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, 0), DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, 0), DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, 0), DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, 0), DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, 0), DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, 0), DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, 0), #endif }; static const struct file_operations tegra_drm_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, .mmap = tegra_drm_mmap, .poll = drm_poll, .read = drm_read, .compat_ioctl = drm_compat_ioctl, .llseek = noop_llseek, }; static u32 tegra_drm_get_vblank_counter(struct drm_device *drm, unsigned int pipe) { struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe); struct tegra_dc *dc = to_tegra_dc(crtc); if (!crtc) return 0; return tegra_dc_get_vblank_counter(dc); } static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe) { struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe); struct tegra_dc *dc = to_tegra_dc(crtc); if (!crtc) return -ENODEV; tegra_dc_enable_vblank(dc); return 0; } static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe) { struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe); struct tegra_dc *dc = to_tegra_dc(crtc); if (crtc) tegra_dc_disable_vblank(dc); } static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct tegra_drm_context *context, *tmp; list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) tegra_drm_context_free(context); kfree(fpriv); } #ifdef CONFIG_DEBUG_FS static int tegra_debugfs_framebuffers(struct seq_file *s, void *data) { struct drm_info_node *node = (struct drm_info_node *)s->private; struct drm_device *drm = node->minor->dev; struct drm_framebuffer *fb; mutex_lock(&drm->mode_config.fb_lock); list_for_each_entry(fb, &drm->mode_config.fb_list, head) { seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n", fb->base.id, fb->width, fb->height, fb->format->depth, fb->format->cpp[0] * 8, drm_framebuffer_read_refcount(fb)); } mutex_unlock(&drm->mode_config.fb_lock); return 0; } static int tegra_debugfs_iova(struct seq_file *s, void *data) { struct drm_info_node *node = (struct drm_info_node *)s->private; struct drm_device *drm = node->minor->dev; struct tegra_drm *tegra = drm->dev_private; struct drm_printer p = drm_seq_file_printer(s); drm_mm_print(&tegra->mm, &p); return 0; } static struct drm_info_list tegra_debugfs_list[] = { { "framebuffers", tegra_debugfs_framebuffers, 0 }, { "iova", tegra_debugfs_iova, 0 }, }; static int tegra_debugfs_init(struct drm_minor *minor) { return drm_debugfs_create_files(tegra_debugfs_list, ARRAY_SIZE(tegra_debugfs_list), minor->debugfs_root, minor); } #endif static struct drm_driver tegra_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC, .load = tegra_drm_load, .unload = tegra_drm_unload, .open = tegra_drm_open, .preclose = tegra_drm_preclose, .lastclose = tegra_drm_lastclose, .get_vblank_counter = tegra_drm_get_vblank_counter, .enable_vblank = tegra_drm_enable_vblank, .disable_vblank = tegra_drm_disable_vblank, #if defined(CONFIG_DEBUG_FS) .debugfs_init = tegra_debugfs_init, #endif .gem_free_object_unlocked = tegra_bo_free_object, .gem_vm_ops = &tegra_bo_vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = tegra_gem_prime_export, .gem_prime_import = tegra_gem_prime_import, .dumb_create = tegra_bo_dumb_create, .dumb_map_offset = tegra_bo_dumb_map_offset, .dumb_destroy = drm_gem_dumb_destroy, .ioctls = tegra_drm_ioctls, .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls), .fops = &tegra_drm_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, }; int tegra_drm_register_client(struct tegra_drm *tegra, struct tegra_drm_client *client) { mutex_lock(&tegra->clients_lock); list_add_tail(&client->list, &tegra->clients); mutex_unlock(&tegra->clients_lock); return 0; } int tegra_drm_unregister_client(struct tegra_drm *tegra, struct tegra_drm_client *client) { mutex_lock(&tegra->clients_lock); list_del_init(&client->list); mutex_unlock(&tegra->clients_lock); return 0; } static int host1x_drm_probe(struct host1x_device *dev) { struct drm_driver *driver = &tegra_drm_driver; struct drm_device *drm; int err; drm = drm_dev_alloc(driver, &dev->dev); if (IS_ERR(drm)) return PTR_ERR(drm); dev_set_drvdata(&dev->dev, drm); err = drm_dev_register(drm, 0); if (err < 0) goto unref; return 0; unref: drm_dev_unref(drm); return err; } static int host1x_drm_remove(struct host1x_device *dev) { struct drm_device *drm = dev_get_drvdata(&dev->dev); drm_dev_unregister(drm); drm_dev_unref(drm); return 0; } #ifdef CONFIG_PM_SLEEP static int host1x_drm_suspend(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); struct tegra_drm *tegra = drm->dev_private; drm_kms_helper_poll_disable(drm); tegra_drm_fb_suspend(drm); tegra->state = drm_atomic_helper_suspend(drm); if (IS_ERR(tegra->state)) { tegra_drm_fb_resume(drm); drm_kms_helper_poll_enable(drm); return PTR_ERR(tegra->state); } return 0; } static int host1x_drm_resume(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); struct tegra_drm *tegra = drm->dev_private; drm_atomic_helper_resume(drm, tegra->state); tegra_drm_fb_resume(drm); drm_kms_helper_poll_enable(drm); return 0; } #endif static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend, host1x_drm_resume); static const struct of_device_id host1x_drm_subdevs[] = { { .compatible = "nvidia,tegra20-dc", }, { .compatible = "nvidia,tegra20-hdmi", }, { .compatible = "nvidia,tegra20-gr2d", }, { .compatible = "nvidia,tegra20-gr3d", }, { .compatible = "nvidia,tegra30-dc", }, { .compatible = "nvidia,tegra30-hdmi", }, { .compatible = "nvidia,tegra30-gr2d", }, { .compatible = "nvidia,tegra30-gr3d", }, { .compatible = "nvidia,tegra114-dsi", }, { .compatible = "nvidia,tegra114-hdmi", }, { .compatible = "nvidia,tegra114-gr3d", }, { .compatible = "nvidia,tegra124-dc", }, { .compatible = "nvidia,tegra124-sor", }, { .compatible = "nvidia,tegra124-hdmi", }, { .compatible = "nvidia,tegra124-dsi", }, { .compatible = "nvidia,tegra132-dsi", }, { .compatible = "nvidia,tegra210-dc", }, { .compatible = "nvidia,tegra210-dsi", }, { .compatible = "nvidia,tegra210-sor", }, { .compatible = "nvidia,tegra210-sor1", }, { /* sentinel */ } }; static struct host1x_driver host1x_drm_driver = { .driver = { .name = "drm", .pm = &host1x_drm_pm_ops, }, .probe = host1x_drm_probe, .remove = host1x_drm_remove, .subdevs = host1x_drm_subdevs, }; static struct platform_driver * const drivers[] = { &tegra_dc_driver, &tegra_hdmi_driver, &tegra_dsi_driver, &tegra_dpaux_driver, &tegra_sor_driver, &tegra_gr2d_driver, &tegra_gr3d_driver, }; static int __init host1x_drm_init(void) { int err; err = host1x_driver_register(&host1x_drm_driver); if (err < 0) return err; err = platform_register_drivers(drivers, ARRAY_SIZE(drivers)); if (err < 0) goto unregister_host1x; return 0; unregister_host1x: host1x_driver_unregister(&host1x_drm_driver); return err; } module_init(host1x_drm_init); static void __exit host1x_drm_exit(void) { platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); host1x_driver_unregister(&host1x_drm_driver); } module_exit(host1x_drm_exit); MODULE_AUTHOR("Thierry Reding "); MODULE_DESCRIPTION("NVIDIA Tegra DRM driver"); MODULE_LICENSE("GPL v2");