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 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
30 #include "drm_crtc_helper.h"
32 #include <drm/exynos_drm.h>
34 #include "exynos_drm_drv.h"
35 #include "exynos_drm_crtc.h"
36 #include "exynos_drm_encoder.h"
37 #include "exynos_drm_fbdev.h"
38 #include "exynos_drm_fb.h"
39 #include "exynos_drm_gem.h"
40 #include "exynos_drm_plane.h"
41 #include "exynos_drm_vidi.h"
42 #include "exynos_drm_dmabuf.h"
43 #include "exynos_drm_display.h"
45 #include <linux/i2c.h>
46 #include <linux/of_i2c.h>
48 #include <drm/bridge/ptn3460.h>
49 #include <drm/bridge/ps8622.h>
51 #define DRIVER_NAME "exynos"
52 #define DRIVER_DESC "Samsung SoC DRM"
53 #define DRIVER_DATE "20110530"
54 #define DRIVER_MAJOR 1
55 #define DRIVER_MINOR 0
57 #define VBLANK_OFF_DELAY 50000
59 /* TODO (seanpaul): Once we remove platform drivers, we'll be calling the
60 * various panel/controller init functions directly. These init functions will
61 * return to us the ops and context, so we can get rid of these attach
62 * functions. Once the attach functions are gone, we can move this array of
63 * display pointers into the drm device's platform data.
65 * For now, we'll use a global to keep track of things.
67 static struct exynos_drm_display *displays[EXYNOS_DRM_DISPLAY_NUM_DISPLAYS];
70 struct i2c_client *client;
71 struct device_node *node;
75 static int find_bridge(const char *name, struct bridge_init *bridge)
77 bridge->valid = false;
78 bridge->client = NULL;
79 bridge->node = of_find_node_by_name(NULL, name);
83 bridge->client = of_find_i2c_device_by_node(bridge->node);
91 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
93 struct exynos_drm_private *private;
96 struct bridge_init bridge;
98 DRM_DEBUG("[DEV:%s] flags: 0x%lx\n", dev->devname, flags);
100 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
102 DRM_ERROR("failed to allocate private\n");
106 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
107 if (kds_callback_init(&private->kds_cb, 1,
108 exynos_drm_kds_callback) < 0) {
109 DRM_ERROR("kds alloc queue failed.\n");
115 DRM_INIT_WAITQUEUE(&private->wait_vsync_queue);
117 dev->dev_private = (void *)private;
119 drm_mode_config_init(dev);
121 /* init kms poll for handling hpd */
122 drm_kms_helper_poll_init(dev);
124 exynos_drm_mode_config_init(dev);
127 * EXYNOS4 is enough to have two CRTCs and each crtc would be used
128 * without dependency of hardware.
130 for (nr = 0; nr < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; nr++) {
131 ret = exynos_drm_crtc_create(dev, nr, displays[nr]);
136 for (nr = 0; nr < MAX_PLANE; nr++) {
137 struct drm_plane *plane;
138 unsigned int possible_crtcs =
139 (1 << EXYNOS_DRM_DISPLAY_NUM_DISPLAYS) - 1;
141 plane = exynos_plane_init(dev, possible_crtcs, false);
146 ret = drm_vblank_init(dev, EXYNOS_DRM_DISPLAY_NUM_DISPLAYS);
150 ret = find_bridge("ptn3460-bridge", &bridge);
152 DRM_ERROR("Could not get PTN3460 bridge %d\n", ret);
156 ret = ptn3460_init(dev, bridge.client, bridge.node);
158 DRM_ERROR("Failed to initialize the ptn bridge\n");
162 ret = find_bridge("ps8622-bridge", &bridge);
164 DRM_ERROR("Could not get PS8622 bridge %d\n", ret);
169 ret = ps8622_init(dev, bridge.client, bridge.node);
171 DRM_ERROR("Failed to initialize the Parade "
179 * probe sub drivers such as display controller and hdmi driver,
180 * that were registered at probe() of platform driver
181 * to the sub driver and create encoder and connector for them.
183 ret = exynos_drm_device_register(dev);
187 /* setup possible_clones. */
188 exynos_drm_encoder_setup(dev);
191 * create and configure fb helper and also exynos specific
194 ret = exynos_drm_fbdev_init(dev);
196 DRM_ERROR("failed to initialize drm fbdev\n");
200 drm_vblank_offdelay = VBLANK_OFF_DELAY;
205 exynos_drm_device_unregister(dev);
207 drm_vblank_cleanup(dev);
209 drm_mode_config_cleanup(dev);
210 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
211 kds_callback_term(&private->kds_cb);
219 static int exynos_drm_unload(struct drm_device *dev)
221 struct exynos_drm_private *private = dev->dev_private;
223 DRM_DEBUG("[DEV:%s]\n", dev->devname);
225 exynos_drm_fbdev_fini(dev);
226 exynos_drm_device_unregister(dev);
227 drm_vblank_cleanup(dev);
228 drm_kms_helper_poll_fini(dev);
229 drm_mode_config_cleanup(dev);
230 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
231 kds_callback_term(&private->kds_cb);
235 dev->dev_private = NULL;
240 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
242 struct exynos_drm_file_private *file_private;
244 DRM_DEBUG("[DEV:%s]\n", dev->devname);
246 file_private = kzalloc(sizeof(*file_private), GFP_KERNEL);
248 DRM_ERROR("failed to allocate exynos_drm_file_private\n");
251 INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
253 file->driver_priv = file_private;
255 return exynos_drm_subdrv_open(dev, file);
258 static void exynos_drm_preclose(struct drm_device *dev,
259 struct drm_file *file)
261 struct exynos_drm_file_private *file_private = file->driver_priv;
262 struct exynos_drm_gem_obj_node *cur, *d;
264 DRM_DEBUG("[DEV:%s]\n", dev->devname);
266 mutex_lock(&dev->struct_mutex);
267 /* release kds resource sets for outstanding GEM object acquires */
268 list_for_each_entry_safe(cur, d,
269 &file_private->gem_cpu_acquire_list, list) {
270 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
271 BUG_ON(cur->exynos_gem_obj->resource_set == NULL);
272 kds_resource_set_release(&cur->exynos_gem_obj->resource_set);
274 drm_gem_object_unreference(&cur->exynos_gem_obj->base);
277 mutex_unlock(&dev->struct_mutex);
278 INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
280 exynos_drm_subdrv_close(dev, file);
283 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
285 DRM_DEBUG("[DEV:%s]\n", dev->devname);
287 if (!file->driver_priv)
290 kfree(file->driver_priv);
291 file->driver_priv = NULL;
294 static void exynos_drm_lastclose(struct drm_device *dev)
296 DRM_DEBUG("[DEV:%s]\n", dev->devname);
298 exynos_drm_fbdev_restore_mode(dev);
301 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
302 .fault = exynos_drm_gem_fault,
303 .open = drm_gem_vm_open,
304 .close = drm_gem_vm_close,
307 static struct drm_ioctl_desc exynos_ioctls[] = {
308 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
309 DRM_UNLOCKED | DRM_AUTH),
310 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
311 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
313 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
314 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
315 DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
316 DRM_UNLOCKED | DRM_AUTH),
317 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
318 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
319 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CPU_ACQUIRE,
320 exynos_drm_gem_cpu_acquire_ioctl,
321 DRM_UNLOCKED | DRM_AUTH),
322 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CPU_RELEASE,
323 exynos_drm_gem_cpu_release_ioctl,
324 DRM_UNLOCKED | DRM_AUTH),
327 static const struct file_operations exynos_drm_driver_fops = {
328 .owner = THIS_MODULE,
330 .mmap = exynos_drm_gem_mmap,
333 .unlocked_ioctl = drm_ioctl,
334 .release = drm_release,
337 static struct drm_driver exynos_drm_driver = {
338 .driver_features = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
339 DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
340 .load = exynos_drm_load,
341 .unload = exynos_drm_unload,
342 .open = exynos_drm_open,
343 .preclose = exynos_drm_preclose,
344 .lastclose = exynos_drm_lastclose,
345 .postclose = exynos_drm_postclose,
346 .get_vblank_counter = drm_vblank_count,
347 .enable_vblank = exynos_drm_crtc_enable_vblank,
348 .disable_vblank = exynos_drm_crtc_disable_vblank,
349 #if defined(CONFIG_DEBUG_FS)
350 .debugfs_init = exynos_drm_debugfs_init,
351 .debugfs_cleanup = exynos_drm_debugfs_cleanup,
353 .gem_free_object = exynos_drm_gem_free_object,
354 .gem_vm_ops = &exynos_drm_gem_vm_ops,
355 .dumb_create = exynos_drm_gem_dumb_create,
356 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
357 .dumb_destroy = exynos_drm_gem_dumb_destroy,
358 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
359 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
360 .gem_prime_export = exynos_dmabuf_prime_export,
361 .gem_prime_import = exynos_dmabuf_prime_import,
362 .ioctls = exynos_ioctls,
363 .fops = &exynos_drm_driver_fops,
367 .major = DRIVER_MAJOR,
368 .minor = DRIVER_MINOR,
371 #ifdef CONFIG_EXYNOS_IOMMU
372 static int iommu_init(struct platform_device *pdev)
374 /* DRM device expects a IOMMU mapping to be already
375 * created in FIMD. Else this function should
378 if (exynos_drm_common_mapping==NULL) {
379 printk(KERN_ERR "exynos drm common mapping is invalid\n");
384 * The ordering in Makefile warrants that this is initialized after
385 * FIMD, so only just ensure that it works as expected and we are
386 * reusing the mapping originally created in exynos_drm_fimd.c.
388 WARN_ON(!exynos_drm_common_mapping);
389 if (!s5p_create_iommu_mapping(&pdev->dev, 0,
390 0, 0, exynos_drm_common_mapping)) {
391 printk(KERN_ERR "failed to create IOMMU mapping\n");
398 static void iommu_deinit(struct platform_device *pdev)
400 /* detach the device and mapping */
401 s5p_destroy_iommu_mapping(&pdev->dev);
402 DRM_DEBUG("released the IOMMU mapping\n");
408 static int exynos_drm_platform_probe(struct platform_device *pdev)
410 struct device *dev = &pdev->dev;
413 DRM_DEBUG("[PDEV:%s]\n", pdev->name);
415 #ifdef CONFIG_EXYNOS_IOMMU
416 if (iommu_init(pdev)) {
417 DRM_ERROR("failed to initialize IOMMU\n");
422 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
424 pm_vt_switch_required(dev, false);
425 pm_runtime_enable(dev);
426 pm_runtime_get_sync(dev);
428 ret = drm_platform_init(&exynos_drm_driver, pdev);
429 #ifdef CONFIG_EXYNOS_IOMMU
437 static int __devexit exynos_drm_platform_remove(struct platform_device *pdev)
439 struct device *dev = &pdev->dev;
441 DRM_DEBUG("[PDEV:%s]\n", pdev->name);
443 pm_vt_switch_unregister(dev);
444 pm_runtime_disable(dev);
446 drm_platform_exit(&exynos_drm_driver, pdev);
448 #ifdef CONFIG_EXYNOS_IOMMU
454 const char *exynos_display_type_name(const struct exynos_drm_display *display)
456 switch (display->display_type) {
457 case EXYNOS_DRM_DISPLAY_TYPE_FIMD:
459 case EXYNOS_DRM_DISPLAY_TYPE_MIXER:
461 case EXYNOS_DRM_DISPLAY_TYPE_VIDI:
468 void exynos_display_attach_panel(enum exynos_drm_display_type type,
469 struct exynos_panel_ops *ops, void *ctx)
472 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
473 if (displays[i]->display_type == type) {
474 displays[i]->panel_ctx = ctx;
475 displays[i]->panel_ops = ops;
481 void exynos_display_attach_controller(enum exynos_drm_display_type type,
482 struct exynos_controller_ops *ops, void *ctx)
485 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
486 if (displays[i]->display_type == type) {
487 displays[i]->controller_ctx = ctx;
488 displays[i]->controller_ops = ops;
494 static int display_subdrv_probe(struct drm_device *drm_dev,
495 struct exynos_drm_subdrv *subdrv)
497 struct exynos_drm_display *display = subdrv->display;
500 if (!display->controller_ops || !display->panel_ops)
503 if (display->controller_ops->subdrv_probe) {
504 ret = display->controller_ops->subdrv_probe(
505 display->controller_ctx, drm_dev);
510 if (display->panel_ops->subdrv_probe) {
511 ret = display->panel_ops->subdrv_probe(display->panel_ctx,
520 int exynos_display_init(struct exynos_drm_display *display,
521 enum exynos_drm_display_type type)
523 struct exynos_drm_subdrv *subdrv;
525 subdrv = kzalloc(sizeof(*subdrv), GFP_KERNEL);
527 DRM_ERROR("Failed to allocate display subdrv\n");
531 display->display_type = type;
533 display->subdrv = subdrv;
535 subdrv->probe = display_subdrv_probe;
536 subdrv->display = display;
537 exynos_drm_subdrv_register(subdrv);
542 void exynos_display_remove(struct exynos_drm_display *display)
544 if (display->subdrv) {
545 exynos_drm_subdrv_unregister(display->subdrv);
546 kfree(display->subdrv);
550 static int exynos_drm_resume_displays(struct drm_device *dev)
554 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
555 struct exynos_drm_display *display = displays[i];
556 struct drm_connector *connector = display->subdrv->connector;
558 if (!connector || !connector->funcs->dpms)
561 connector->funcs->dpms(connector, display->suspend_dpms);
564 drm_helper_resume_force_mode(dev);
569 static int exynos_drm_suspend_displays(void)
573 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
574 struct exynos_drm_display *display = displays[i];
575 struct drm_connector *connector = display->subdrv->connector;
580 display->suspend_dpms = connector->dpms;
581 if (connector->funcs->dpms)
582 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
587 #ifdef CONFIG_PM_SLEEP
588 static int exynos_drm_suspend(struct device *dev)
590 if (pm_runtime_suspended(dev))
593 return exynos_drm_suspend_displays();
596 static int exynos_drm_resume(struct device *dev)
598 struct platform_device *pdev = to_platform_device(dev);
599 struct drm_device *drm_dev = platform_get_drvdata(pdev);
601 if (pm_runtime_suspended(dev))
604 return exynos_drm_resume_displays(drm_dev);
608 #ifdef CONFIG_PM_RUNTIME
609 static int exynos_drm_runtime_resume(struct device *dev)
611 struct platform_device *pdev = to_platform_device(dev);
612 struct drm_device *drm_dev = platform_get_drvdata(pdev);
614 /* Check drm_dev here since this function is called from probe */
618 return exynos_drm_resume_displays(drm_dev);
621 static int exynos_drm_runtime_suspend(struct device *dev)
623 return exynos_drm_suspend_displays();
627 static const struct dev_pm_ops drm_pm_ops = {
628 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
629 SET_RUNTIME_PM_OPS(exynos_drm_runtime_suspend,
630 exynos_drm_runtime_resume, NULL)
633 static struct platform_driver exynos_drm_platform_driver = {
634 .probe = exynos_drm_platform_probe,
635 .remove = __devexit_p(exynos_drm_platform_remove),
637 .owner = THIS_MODULE,
638 .name = "exynos-drm",
643 static int __init exynos_drm_init(void)
647 DRM_DEBUG_DRIVER("\n");
649 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
650 displays[i] = kzalloc(sizeof(*displays[i]), GFP_KERNEL);
656 ret = exynos_display_init(displays[i], i);
661 #ifdef CONFIG_DRM_EXYNOS_FIMD
662 ret = platform_driver_register(&fimd_driver);
667 #ifdef CONFIG_DRM_EXYNOS_DP
668 ret = platform_driver_register(&dp_driver);
673 #ifdef CONFIG_DRM_EXYNOS_HDMI
674 ret = platform_driver_register(&hdmi_driver);
677 ret = platform_driver_register(&mixer_driver);
682 #ifdef CONFIG_DRM_EXYNOS_VIDI
683 ret = platform_driver_register(&vidi_driver);
688 ret = platform_driver_register(&exynos_drm_platform_driver);
695 #ifdef CONFIG_DRM_EXYNOS_VIDI
697 platform_driver_unregister(&vidi_driver);
700 #ifdef CONFIG_DRM_EXYNOS_HDMI
701 platform_driver_unregister(&mixer_driver);
703 platform_driver_unregister(&hdmi_driver);
707 platform_driver_unregister(&dp_driver);
709 #ifdef CONFIG_DRM_EXYNOS_FIMD
710 platform_driver_unregister(&fimd_driver);
714 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
718 exynos_display_remove(displays[i]);
724 static void __exit exynos_drm_exit(void)
728 DRM_DEBUG_DRIVER("\n");
730 platform_driver_unregister(&exynos_drm_platform_driver);
732 #ifdef CONFIG_DRM_EXYNOS_HDMI
733 platform_driver_unregister(&mixer_driver);
734 platform_driver_unregister(&hdmi_driver);
737 #ifdef CONFIG_DRM_EXYNOS_VIDI
738 platform_driver_unregister(&vidi_driver);
741 platform_driver_unregister(&dp_driver);
742 #ifdef CONFIG_DRM_EXYNOS_FIMD
743 platform_driver_unregister(&fimd_driver);
746 for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
750 exynos_display_remove(displays[i]);
755 module_init(exynos_drm_init);
756 module_exit(exynos_drm_exit);
758 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
759 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
760 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
761 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
762 MODULE_LICENSE("GPL");