2 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * Inki Dae <inki.dae@samsung.com>
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Seung-Woo Kim <sw0312.kim@samsung.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/pm_runtime.h>
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc_helper.h>
20 #include <linux/component.h>
22 #include <drm/exynos_drm.h>
24 #include "exynos_drm_drv.h"
25 #include "exynos_drm_crtc.h"
26 #include "exynos_drm_fbdev.h"
27 #include "exynos_drm_fb.h"
28 #include "exynos_drm_gem.h"
29 #include "exynos_drm_plane.h"
30 #include "exynos_drm_vidi.h"
31 #include "exynos_drm_g2d.h"
32 #include "exynos_drm_ipp.h"
33 #include "exynos_drm_iommu.h"
35 #define DRIVER_NAME "exynos"
36 #define DRIVER_DESC "Samsung SoC DRM"
37 #define DRIVER_DATE "20110530"
38 #define DRIVER_MAJOR 1
39 #define DRIVER_MINOR 0
41 struct exynos_atomic_commit {
42 struct work_struct work;
43 struct drm_device *dev;
44 struct drm_atomic_state *state;
48 static void exynos_atomic_wait_for_commit(struct drm_atomic_state *state)
50 struct drm_crtc_state *crtc_state;
51 struct drm_crtc *crtc;
54 for_each_crtc_in_state(state, crtc, crtc_state, i) {
55 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
57 if (!crtc->state->enable)
60 ret = drm_crtc_vblank_get(crtc);
64 exynos_drm_crtc_wait_pending_update(exynos_crtc);
65 drm_crtc_vblank_put(crtc);
69 static void exynos_atomic_commit_complete(struct exynos_atomic_commit *commit)
71 struct drm_device *dev = commit->dev;
72 struct exynos_drm_private *priv = dev->dev_private;
73 struct drm_atomic_state *state = commit->state;
74 struct drm_plane *plane;
75 struct drm_crtc *crtc;
76 struct drm_plane_state *plane_state;
77 struct drm_crtc_state *crtc_state;
80 drm_atomic_helper_commit_modeset_disables(dev, state);
82 drm_atomic_helper_commit_modeset_enables(dev, state);
85 * Exynos can't update planes with CRTCs and encoders disabled,
86 * its updates routines, specially for FIMD, requires the clocks
87 * to be enabled. So it is necessary to handle the modeset operations
88 * *before* the commit_planes() step, this way it will always
89 * have the relevant clocks enabled to perform the update.
92 for_each_crtc_in_state(state, crtc, crtc_state, i) {
93 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
95 atomic_set(&exynos_crtc->pending_update, 0);
98 for_each_plane_in_state(state, plane, plane_state, i) {
99 struct exynos_drm_crtc *exynos_crtc =
100 to_exynos_crtc(plane->crtc);
105 atomic_inc(&exynos_crtc->pending_update);
108 drm_atomic_helper_commit_planes(dev, state, false);
110 exynos_atomic_wait_for_commit(state);
112 drm_atomic_helper_cleanup_planes(dev, state);
114 drm_atomic_state_free(state);
116 spin_lock(&priv->lock);
117 priv->pending &= ~commit->crtcs;
118 spin_unlock(&priv->lock);
120 wake_up_all(&priv->wait);
125 static void exynos_drm_atomic_work(struct work_struct *work)
127 struct exynos_atomic_commit *commit = container_of(work,
128 struct exynos_atomic_commit, work);
130 exynos_atomic_commit_complete(commit);
133 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
135 struct exynos_drm_private *private;
136 struct drm_encoder *encoder;
137 unsigned int clone_mask;
140 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
144 init_waitqueue_head(&private->wait);
145 spin_lock_init(&private->lock);
147 dev_set_drvdata(dev->dev, dev);
148 dev->dev_private = (void *)private;
151 * create mapping to manage iommu table and set a pointer to iommu
152 * mapping structure to iommu_mapping of private data.
153 * also this iommu_mapping can be used to check if iommu is supported
156 ret = drm_create_iommu_mapping(dev);
158 DRM_ERROR("failed to create iommu mapping.\n");
159 goto err_free_private;
162 drm_mode_config_init(dev);
164 exynos_drm_mode_config_init(dev);
166 /* setup possible_clones. */
169 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
170 clone_mask |= (1 << (cnt++));
172 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
173 encoder->possible_clones = clone_mask;
175 platform_set_drvdata(dev->platformdev, dev);
177 /* Try to bind all sub drivers. */
178 ret = component_bind_all(dev->dev, dev);
180 goto err_mode_config_cleanup;
182 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
186 /* Probe non kms sub drivers and virtual display driver. */
187 ret = exynos_drm_device_subdrv_probe(dev);
189 goto err_cleanup_vblank;
191 drm_mode_config_reset(dev);
194 * enable drm irq mode.
195 * - with irq_enabled = true, we can use the vblank feature.
197 * P.S. note that we wouldn't use drm irq handler but
198 * just specific driver own one instead because
199 * drm framework supports only one irq handler.
201 dev->irq_enabled = true;
204 * with vblank_disable_allowed = true, vblank interrupt will be disabled
205 * by drm timer once a current process gives up ownership of
206 * vblank event.(after drm_vblank_put function is called)
208 dev->vblank_disable_allowed = true;
210 /* init kms poll for handling hpd */
211 drm_kms_helper_poll_init(dev);
213 /* force connectors detection */
214 drm_helper_hpd_irq_event(dev);
219 drm_vblank_cleanup(dev);
221 component_unbind_all(dev->dev, dev);
222 err_mode_config_cleanup:
223 drm_mode_config_cleanup(dev);
224 drm_release_iommu_mapping(dev);
231 static int exynos_drm_unload(struct drm_device *dev)
233 exynos_drm_device_subdrv_remove(dev);
235 exynos_drm_fbdev_fini(dev);
236 drm_kms_helper_poll_fini(dev);
238 drm_vblank_cleanup(dev);
239 component_unbind_all(dev->dev, dev);
240 drm_mode_config_cleanup(dev);
241 drm_release_iommu_mapping(dev);
243 kfree(dev->dev_private);
244 dev->dev_private = NULL;
249 static int commit_is_pending(struct exynos_drm_private *priv, u32 crtcs)
253 spin_lock(&priv->lock);
254 pending = priv->pending & crtcs;
255 spin_unlock(&priv->lock);
260 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
263 struct exynos_drm_private *priv = dev->dev_private;
264 struct exynos_atomic_commit *commit;
267 commit = kzalloc(sizeof(*commit), GFP_KERNEL);
271 ret = drm_atomic_helper_prepare_planes(dev, state);
277 /* This is the point of no return */
279 INIT_WORK(&commit->work, exynos_drm_atomic_work);
281 commit->state = state;
283 /* Wait until all affected CRTCs have completed previous commits and
284 * mark them as pending.
286 for (i = 0; i < dev->mode_config.num_crtc; ++i) {
288 commit->crtcs |= 1 << drm_crtc_index(state->crtcs[i]);
291 wait_event(priv->wait, !commit_is_pending(priv, commit->crtcs));
293 spin_lock(&priv->lock);
294 priv->pending |= commit->crtcs;
295 spin_unlock(&priv->lock);
297 drm_atomic_helper_swap_state(dev, state);
300 schedule_work(&commit->work);
302 exynos_atomic_commit_complete(commit);
307 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
309 struct drm_exynos_file_private *file_priv;
312 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
316 file->driver_priv = file_priv;
318 ret = exynos_drm_subdrv_open(dev, file);
320 goto err_file_priv_free;
326 file->driver_priv = NULL;
330 static void exynos_drm_preclose(struct drm_device *dev,
331 struct drm_file *file)
333 struct drm_crtc *crtc;
335 exynos_drm_subdrv_close(dev, file);
337 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
338 exynos_drm_crtc_cancel_page_flip(crtc, file);
341 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
343 struct drm_pending_event *e, *et;
346 if (!file->driver_priv)
349 spin_lock_irqsave(&dev->event_lock, flags);
350 /* Release all events handled by page flip handler but not freed. */
351 list_for_each_entry_safe(e, et, &file->event_list, link) {
355 spin_unlock_irqrestore(&dev->event_lock, flags);
357 kfree(file->driver_priv);
358 file->driver_priv = NULL;
361 static void exynos_drm_lastclose(struct drm_device *dev)
363 exynos_drm_fbdev_restore_mode(dev);
366 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
367 .fault = exynos_drm_gem_fault,
368 .open = drm_gem_vm_open,
369 .close = drm_gem_vm_close,
372 static const struct drm_ioctl_desc exynos_ioctls[] = {
373 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
374 DRM_AUTH | DRM_RENDER_ALLOW),
375 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
377 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
379 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
380 DRM_AUTH | DRM_RENDER_ALLOW),
381 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
382 DRM_AUTH | DRM_RENDER_ALLOW),
383 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
384 DRM_AUTH | DRM_RENDER_ALLOW),
385 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property,
386 DRM_AUTH | DRM_RENDER_ALLOW),
387 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property,
388 DRM_AUTH | DRM_RENDER_ALLOW),
389 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf,
390 DRM_AUTH | DRM_RENDER_ALLOW),
391 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl,
392 DRM_AUTH | DRM_RENDER_ALLOW),
395 static const struct file_operations exynos_drm_driver_fops = {
396 .owner = THIS_MODULE,
398 .mmap = exynos_drm_gem_mmap,
401 .unlocked_ioctl = drm_ioctl,
403 .compat_ioctl = drm_compat_ioctl,
405 .release = drm_release,
408 static struct drm_driver exynos_drm_driver = {
409 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
410 | DRIVER_ATOMIC | DRIVER_RENDER,
411 .load = exynos_drm_load,
412 .unload = exynos_drm_unload,
413 .open = exynos_drm_open,
414 .preclose = exynos_drm_preclose,
415 .lastclose = exynos_drm_lastclose,
416 .postclose = exynos_drm_postclose,
417 .set_busid = drm_platform_set_busid,
418 .get_vblank_counter = drm_vblank_no_hw_counter,
419 .enable_vblank = exynos_drm_crtc_enable_vblank,
420 .disable_vblank = exynos_drm_crtc_disable_vblank,
421 .gem_free_object = exynos_drm_gem_free_object,
422 .gem_vm_ops = &exynos_drm_gem_vm_ops,
423 .dumb_create = exynos_drm_gem_dumb_create,
424 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
425 .dumb_destroy = drm_gem_dumb_destroy,
426 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
427 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
428 .gem_prime_export = drm_gem_prime_export,
429 .gem_prime_import = drm_gem_prime_import,
430 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
431 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
432 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
433 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
434 .ioctls = exynos_ioctls,
435 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
436 .fops = &exynos_drm_driver_fops,
440 .major = DRIVER_MAJOR,
441 .minor = DRIVER_MINOR,
444 #ifdef CONFIG_PM_SLEEP
445 static int exynos_drm_suspend(struct device *dev)
447 struct drm_device *drm_dev = dev_get_drvdata(dev);
448 struct drm_connector *connector;
450 if (pm_runtime_suspended(dev) || !drm_dev)
453 drm_modeset_lock_all(drm_dev);
454 drm_for_each_connector(connector, drm_dev) {
455 int old_dpms = connector->dpms;
457 if (connector->funcs->dpms)
458 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
460 /* Set the old mode back to the connector for resume */
461 connector->dpms = old_dpms;
463 drm_modeset_unlock_all(drm_dev);
468 static int exynos_drm_resume(struct device *dev)
470 struct drm_device *drm_dev = dev_get_drvdata(dev);
471 struct drm_connector *connector;
473 if (pm_runtime_suspended(dev) || !drm_dev)
476 drm_modeset_lock_all(drm_dev);
477 drm_for_each_connector(connector, drm_dev) {
478 if (connector->funcs->dpms) {
479 int dpms = connector->dpms;
481 connector->dpms = DRM_MODE_DPMS_OFF;
482 connector->funcs->dpms(connector, dpms);
485 drm_modeset_unlock_all(drm_dev);
491 static const struct dev_pm_ops exynos_drm_pm_ops = {
492 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
495 /* forward declaration */
496 static struct platform_driver exynos_drm_platform_driver;
499 * Connector drivers should not be placed before associated crtc drivers,
500 * because connector requires pipe number of its crtc during initialization.
502 static struct platform_driver *const exynos_drm_kms_drivers[] = {
503 #ifdef CONFIG_DRM_EXYNOS_FIMD
506 #ifdef CONFIG_DRM_EXYNOS5433_DECON
507 &exynos5433_decon_driver,
509 #ifdef CONFIG_DRM_EXYNOS7_DECON
512 #ifdef CONFIG_DRM_EXYNOS_MIC
515 #ifdef CONFIG_DRM_EXYNOS_DP
518 #ifdef CONFIG_DRM_EXYNOS_DSI
521 #ifdef CONFIG_DRM_EXYNOS_MIXER
524 #ifdef CONFIG_DRM_EXYNOS_HDMI
527 #ifdef CONFIG_DRM_EXYNOS_VIDI
532 static struct platform_driver *const exynos_drm_non_kms_drivers[] = {
533 #ifdef CONFIG_DRM_EXYNOS_G2D
536 #ifdef CONFIG_DRM_EXYNOS_FIMC
539 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
542 #ifdef CONFIG_DRM_EXYNOS_GSC
545 #ifdef CONFIG_DRM_EXYNOS_IPP
548 &exynos_drm_platform_driver,
551 static struct platform_driver *const exynos_drm_drv_with_simple_dev[] = {
552 #ifdef CONFIG_DRM_EXYNOS_VIDI
555 #ifdef CONFIG_DRM_EXYNOS_IPP
558 &exynos_drm_platform_driver,
560 #define PDEV_COUNT ARRAY_SIZE(exynos_drm_drv_with_simple_dev)
562 static int compare_dev(struct device *dev, void *data)
564 return dev == (struct device *)data;
567 static struct component_match *exynos_drm_match_add(struct device *dev)
569 struct component_match *match = NULL;
572 for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) {
573 struct device_driver *drv = &exynos_drm_kms_drivers[i]->driver;
574 struct device *p = NULL, *d;
576 while ((d = bus_find_device(&platform_bus_type, p, drv,
577 (void *)platform_bus_type.match))) {
579 component_match_add(dev, &match, compare_dev, d);
585 return match ?: ERR_PTR(-ENODEV);
588 static int exynos_drm_bind(struct device *dev)
590 return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
593 static void exynos_drm_unbind(struct device *dev)
595 drm_put_dev(dev_get_drvdata(dev));
598 static const struct component_master_ops exynos_drm_ops = {
599 .bind = exynos_drm_bind,
600 .unbind = exynos_drm_unbind,
603 static int exynos_drm_platform_probe(struct platform_device *pdev)
605 struct component_match *match;
607 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
608 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
610 match = exynos_drm_match_add(&pdev->dev);
612 return PTR_ERR(match);
614 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
618 static int exynos_drm_platform_remove(struct platform_device *pdev)
620 component_master_del(&pdev->dev, &exynos_drm_ops);
624 static struct platform_driver exynos_drm_platform_driver = {
625 .probe = exynos_drm_platform_probe,
626 .remove = exynos_drm_platform_remove,
628 .name = "exynos-drm",
629 .pm = &exynos_drm_pm_ops,
633 static struct platform_device *exynos_drm_pdevs[PDEV_COUNT];
635 static void exynos_drm_unregister_devices(void)
640 platform_device_unregister(exynos_drm_pdevs[i]);
641 exynos_drm_pdevs[i] = NULL;
645 static int exynos_drm_register_devices(void)
649 for (i = 0; i < PDEV_COUNT; ++i) {
650 struct platform_driver *d = exynos_drm_drv_with_simple_dev[i];
651 struct platform_device *pdev =
652 platform_device_register_simple(d->driver.name, -1,
656 exynos_drm_pdevs[i] = pdev;
660 platform_device_unregister(exynos_drm_pdevs[i]);
661 exynos_drm_pdevs[i] = NULL;
664 return PTR_ERR(pdev);
670 static void exynos_drm_unregister_drivers(struct platform_driver * const *drv,
674 platform_driver_unregister(drv[count]);
677 static int exynos_drm_register_drivers(struct platform_driver * const *drv,
682 for (i = 0; i < count; ++i) {
683 ret = platform_driver_register(drv[i]);
688 platform_driver_unregister(drv[i]);
696 static inline int exynos_drm_register_kms_drivers(void)
698 return exynos_drm_register_drivers(exynos_drm_kms_drivers,
699 ARRAY_SIZE(exynos_drm_kms_drivers));
702 static inline int exynos_drm_register_non_kms_drivers(void)
704 return exynos_drm_register_drivers(exynos_drm_non_kms_drivers,
705 ARRAY_SIZE(exynos_drm_non_kms_drivers));
708 static inline void exynos_drm_unregister_kms_drivers(void)
710 exynos_drm_unregister_drivers(exynos_drm_kms_drivers,
711 ARRAY_SIZE(exynos_drm_kms_drivers));
714 static inline void exynos_drm_unregister_non_kms_drivers(void)
716 exynos_drm_unregister_drivers(exynos_drm_non_kms_drivers,
717 ARRAY_SIZE(exynos_drm_non_kms_drivers));
720 static int exynos_drm_init(void)
724 ret = exynos_drm_register_devices();
728 ret = exynos_drm_register_kms_drivers();
730 goto err_unregister_pdevs;
732 ret = exynos_drm_register_non_kms_drivers();
734 goto err_unregister_kms_drivers;
738 err_unregister_kms_drivers:
739 exynos_drm_unregister_kms_drivers();
741 err_unregister_pdevs:
742 exynos_drm_unregister_devices();
747 static void exynos_drm_exit(void)
749 exynos_drm_unregister_non_kms_drivers();
750 exynos_drm_unregister_kms_drivers();
751 exynos_drm_unregister_devices();
754 module_init(exynos_drm_init);
755 module_exit(exynos_drm_exit);
757 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
758 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
759 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
760 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
761 MODULE_LICENSE("GPL");