2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #include <linux/host1x.h>
15 #define DRIVER_NAME "tegra"
16 #define DRIVER_DESC "NVIDIA Tegra graphics"
17 #define DRIVER_DATE "20120330"
18 #define DRIVER_MAJOR 0
19 #define DRIVER_MINOR 0
20 #define DRIVER_PATCHLEVEL 0
22 struct tegra_drm_file {
23 struct list_head contexts;
26 static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
28 struct host1x_device *device = to_host1x_device(drm->dev);
29 struct tegra_drm *tegra;
32 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
36 dev_set_drvdata(drm->dev, tegra);
37 mutex_init(&tegra->clients_lock);
38 INIT_LIST_HEAD(&tegra->clients);
39 drm->dev_private = tegra;
42 drm_mode_config_init(drm);
44 err = host1x_device_init(device);
49 * We don't use the drm_irq_install() helpers provided by the DRM
50 * core, so we need to set this manually in order to allow the
51 * DRM_IOCTL_WAIT_VBLANK to operate correctly.
53 drm->irq_enabled = true;
55 err = drm_vblank_init(drm, drm->mode_config.num_crtc);
59 err = tegra_drm_fb_init(drm);
63 drm_kms_helper_poll_init(drm);
68 static int tegra_drm_unload(struct drm_device *drm)
70 struct host1x_device *device = to_host1x_device(drm->dev);
73 drm_kms_helper_poll_fini(drm);
74 tegra_drm_fb_exit(drm);
75 drm_vblank_cleanup(drm);
76 drm_mode_config_cleanup(drm);
78 err = host1x_device_exit(device);
85 static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
87 struct tegra_drm_file *fpriv;
89 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
93 INIT_LIST_HEAD(&fpriv->contexts);
94 filp->driver_priv = fpriv;
99 static void tegra_drm_context_free(struct tegra_drm_context *context)
101 context->client->ops->close_channel(context);
105 static void tegra_drm_lastclose(struct drm_device *drm)
107 struct tegra_drm *tegra = drm->dev_private;
109 tegra_fbdev_restore_mode(tegra->fbdev);
112 #ifdef CONFIG_DRM_TEGRA_STAGING
113 static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
115 return (struct tegra_drm_context *)(uintptr_t)context;
118 static bool tegra_drm_file_owns_context(struct tegra_drm_file *file,
119 struct tegra_drm_context *context)
121 struct tegra_drm_context *ctx;
123 list_for_each_entry(ctx, &file->contexts, list)
130 static int tegra_gem_create(struct drm_device *drm, void *data,
131 struct drm_file *file)
133 struct drm_tegra_gem_create *args = data;
136 bo = tegra_bo_create_with_handle(file, drm, args->size,
144 static int tegra_gem_mmap(struct drm_device *drm, void *data,
145 struct drm_file *file)
147 struct drm_tegra_gem_mmap *args = data;
148 struct drm_gem_object *gem;
151 gem = drm_gem_object_lookup(drm, file, args->handle);
155 bo = to_tegra_bo(gem);
157 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
159 drm_gem_object_unreference(gem);
164 static int tegra_syncpt_read(struct drm_device *drm, void *data,
165 struct drm_file *file)
167 struct host1x *host = dev_get_drvdata(drm->dev->parent);
168 struct drm_tegra_syncpt_read *args = data;
169 struct host1x_syncpt *sp;
171 sp = host1x_syncpt_get(host, args->id);
175 args->value = host1x_syncpt_read_min(sp);
179 static int tegra_syncpt_incr(struct drm_device *drm, void *data,
180 struct drm_file *file)
182 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
183 struct drm_tegra_syncpt_incr *args = data;
184 struct host1x_syncpt *sp;
186 sp = host1x_syncpt_get(host1x, args->id);
190 return host1x_syncpt_incr(sp);
193 static int tegra_syncpt_wait(struct drm_device *drm, void *data,
194 struct drm_file *file)
196 struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
197 struct drm_tegra_syncpt_wait *args = data;
198 struct host1x_syncpt *sp;
200 sp = host1x_syncpt_get(host1x, args->id);
204 return host1x_syncpt_wait(sp, args->thresh, args->timeout,
208 static int tegra_open_channel(struct drm_device *drm, void *data,
209 struct drm_file *file)
211 struct tegra_drm_file *fpriv = file->driver_priv;
212 struct tegra_drm *tegra = drm->dev_private;
213 struct drm_tegra_open_channel *args = data;
214 struct tegra_drm_context *context;
215 struct tegra_drm_client *client;
218 context = kzalloc(sizeof(*context), GFP_KERNEL);
222 list_for_each_entry(client, &tegra->clients, list)
223 if (client->base.class == args->client) {
224 err = client->ops->open_channel(client, context);
228 list_add(&context->list, &fpriv->contexts);
229 args->context = (uintptr_t)context;
230 context->client = client;
238 static int tegra_close_channel(struct drm_device *drm, void *data,
239 struct drm_file *file)
241 struct tegra_drm_file *fpriv = file->driver_priv;
242 struct drm_tegra_close_channel *args = data;
243 struct tegra_drm_context *context;
245 context = tegra_drm_get_context(args->context);
247 if (!tegra_drm_file_owns_context(fpriv, context))
250 list_del(&context->list);
251 tegra_drm_context_free(context);
256 static int tegra_get_syncpt(struct drm_device *drm, void *data,
257 struct drm_file *file)
259 struct tegra_drm_file *fpriv = file->driver_priv;
260 struct drm_tegra_get_syncpt *args = data;
261 struct tegra_drm_context *context;
262 struct host1x_syncpt *syncpt;
264 context = tegra_drm_get_context(args->context);
266 if (!tegra_drm_file_owns_context(fpriv, context))
269 if (args->index >= context->client->base.num_syncpts)
272 syncpt = context->client->base.syncpts[args->index];
273 args->id = host1x_syncpt_id(syncpt);
278 static int tegra_submit(struct drm_device *drm, void *data,
279 struct drm_file *file)
281 struct tegra_drm_file *fpriv = file->driver_priv;
282 struct drm_tegra_submit *args = data;
283 struct tegra_drm_context *context;
285 context = tegra_drm_get_context(args->context);
287 if (!tegra_drm_file_owns_context(fpriv, context))
290 return context->client->ops->submit(context, args, drm, file);
294 static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
295 #ifdef CONFIG_DRM_TEGRA_STAGING
296 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH),
297 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED),
298 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED),
299 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED),
300 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED),
301 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED),
302 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED),
303 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED),
304 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED),
308 static const struct file_operations tegra_drm_fops = {
309 .owner = THIS_MODULE,
311 .release = drm_release,
312 .unlocked_ioctl = drm_ioctl,
313 .mmap = tegra_drm_mmap,
317 .compat_ioctl = drm_compat_ioctl,
319 .llseek = noop_llseek,
322 static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
324 struct drm_crtc *crtc;
326 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
327 struct tegra_dc *dc = to_tegra_dc(crtc);
329 if (dc->pipe == pipe)
336 static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
338 /* TODO: implement real hardware counter using syncpoints */
339 return drm_vblank_count(dev, crtc);
342 static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
344 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
345 struct tegra_dc *dc = to_tegra_dc(crtc);
350 tegra_dc_enable_vblank(dc);
355 static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
357 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
358 struct tegra_dc *dc = to_tegra_dc(crtc);
361 tegra_dc_disable_vblank(dc);
364 static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
366 struct tegra_drm_file *fpriv = file->driver_priv;
367 struct tegra_drm_context *context, *tmp;
368 struct drm_crtc *crtc;
370 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
371 tegra_dc_cancel_page_flip(crtc, file);
373 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
374 tegra_drm_context_free(context);
379 #ifdef CONFIG_DEBUG_FS
380 static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
382 struct drm_info_node *node = (struct drm_info_node *)s->private;
383 struct drm_device *drm = node->minor->dev;
384 struct drm_framebuffer *fb;
386 mutex_lock(&drm->mode_config.fb_lock);
388 list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
389 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
390 fb->base.id, fb->width, fb->height, fb->depth,
392 atomic_read(&fb->refcount.refcount));
395 mutex_unlock(&drm->mode_config.fb_lock);
400 static struct drm_info_list tegra_debugfs_list[] = {
401 { "framebuffers", tegra_debugfs_framebuffers, 0 },
404 static int tegra_debugfs_init(struct drm_minor *minor)
406 return drm_debugfs_create_files(tegra_debugfs_list,
407 ARRAY_SIZE(tegra_debugfs_list),
408 minor->debugfs_root, minor);
411 static void tegra_debugfs_cleanup(struct drm_minor *minor)
413 drm_debugfs_remove_files(tegra_debugfs_list,
414 ARRAY_SIZE(tegra_debugfs_list), minor);
418 struct drm_driver tegra_drm_driver = {
419 .driver_features = DRIVER_MODESET | DRIVER_GEM,
420 .load = tegra_drm_load,
421 .unload = tegra_drm_unload,
422 .open = tegra_drm_open,
423 .preclose = tegra_drm_preclose,
424 .lastclose = tegra_drm_lastclose,
426 .get_vblank_counter = tegra_drm_get_vblank_counter,
427 .enable_vblank = tegra_drm_enable_vblank,
428 .disable_vblank = tegra_drm_disable_vblank,
430 #if defined(CONFIG_DEBUG_FS)
431 .debugfs_init = tegra_debugfs_init,
432 .debugfs_cleanup = tegra_debugfs_cleanup,
435 .gem_free_object = tegra_bo_free_object,
436 .gem_vm_ops = &tegra_bo_vm_ops,
437 .dumb_create = tegra_bo_dumb_create,
438 .dumb_map_offset = tegra_bo_dumb_map_offset,
439 .dumb_destroy = drm_gem_dumb_destroy,
441 .ioctls = tegra_drm_ioctls,
442 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
443 .fops = &tegra_drm_fops,
448 .major = DRIVER_MAJOR,
449 .minor = DRIVER_MINOR,
450 .patchlevel = DRIVER_PATCHLEVEL,
453 int tegra_drm_register_client(struct tegra_drm *tegra,
454 struct tegra_drm_client *client)
456 mutex_lock(&tegra->clients_lock);
457 list_add_tail(&client->list, &tegra->clients);
458 mutex_unlock(&tegra->clients_lock);
463 int tegra_drm_unregister_client(struct tegra_drm *tegra,
464 struct tegra_drm_client *client)
466 mutex_lock(&tegra->clients_lock);
467 list_del_init(&client->list);
468 mutex_unlock(&tegra->clients_lock);
473 static int host1x_drm_probe(struct host1x_device *device)
475 return drm_host1x_init(&tegra_drm_driver, device);
478 static int host1x_drm_remove(struct host1x_device *device)
480 drm_host1x_exit(&tegra_drm_driver, device);
485 static const struct of_device_id host1x_drm_subdevs[] = {
486 { .compatible = "nvidia,tegra20-dc", },
487 { .compatible = "nvidia,tegra20-hdmi", },
488 { .compatible = "nvidia,tegra20-gr2d", },
489 { .compatible = "nvidia,tegra30-dc", },
490 { .compatible = "nvidia,tegra30-hdmi", },
491 { .compatible = "nvidia,tegra30-gr2d", },
492 { .compatible = "nvidia,tegra114-dsi", },
493 { .compatible = "nvidia,tegra114-hdmi", },
497 static struct host1x_driver host1x_drm_driver = {
499 .probe = host1x_drm_probe,
500 .remove = host1x_drm_remove,
501 .subdevs = host1x_drm_subdevs,
504 static int __init host1x_drm_init(void)
508 err = host1x_driver_register(&host1x_drm_driver);
512 err = platform_driver_register(&tegra_dc_driver);
514 goto unregister_host1x;
516 err = platform_driver_register(&tegra_dsi_driver);
520 err = platform_driver_register(&tegra_hdmi_driver);
524 err = platform_driver_register(&tegra_gr2d_driver);
526 goto unregister_hdmi;
531 platform_driver_unregister(&tegra_hdmi_driver);
533 platform_driver_unregister(&tegra_dsi_driver);
535 platform_driver_unregister(&tegra_dc_driver);
537 host1x_driver_unregister(&host1x_drm_driver);
540 module_init(host1x_drm_init);
542 static void __exit host1x_drm_exit(void)
544 platform_driver_unregister(&tegra_gr2d_driver);
545 platform_driver_unregister(&tegra_hdmi_driver);
546 platform_driver_unregister(&tegra_dsi_driver);
547 platform_driver_unregister(&tegra_dc_driver);
548 host1x_driver_unregister(&host1x_drm_driver);
550 module_exit(host1x_drm_exit);
552 MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
553 MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
554 MODULE_LICENSE("GPL v2");