2 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
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>
19 #include <drm/drm_fb_helper.h>
21 #include <linux/component.h>
23 #include <drm/exynos_drm.h>
25 #include "exynos_drm_drv.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_ipp.h"
31 #include "exynos_drm_vidi.h"
32 #include "exynos_drm_g2d.h"
33 #include "exynos_drm_iommu.h"
35 #define DRIVER_NAME "exynos"
36 #define DRIVER_DESC "Samsung SoC DRM"
37 #define DRIVER_DATE "20180330"
42 * 1.0 - Original version
43 * 1.1 - Upgrade IPP driver to version 2.0
45 #define DRIVER_MAJOR 1
46 #define DRIVER_MINOR 1
48 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
50 struct drm_exynos_file_private *file_priv;
53 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
57 file->driver_priv = file_priv;
59 ret = exynos_drm_subdrv_open(dev, file);
61 goto err_file_priv_free;
67 file->driver_priv = NULL;
71 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
73 exynos_drm_subdrv_close(dev, file);
74 kfree(file->driver_priv);
75 file->driver_priv = NULL;
78 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
79 .fault = exynos_drm_gem_fault,
80 .open = drm_gem_vm_open,
81 .close = drm_gem_vm_close,
84 static const struct drm_ioctl_desc exynos_ioctls[] = {
85 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
86 DRM_AUTH | DRM_RENDER_ALLOW),
87 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
88 DRM_AUTH | DRM_RENDER_ALLOW),
89 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
91 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
93 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
94 DRM_AUTH | DRM_RENDER_ALLOW),
95 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
96 DRM_AUTH | DRM_RENDER_ALLOW),
97 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
98 DRM_AUTH | DRM_RENDER_ALLOW),
99 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
100 exynos_drm_ipp_get_res_ioctl,
101 DRM_AUTH | DRM_RENDER_ALLOW),
102 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
103 DRM_AUTH | DRM_RENDER_ALLOW),
104 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
105 exynos_drm_ipp_get_limits_ioctl,
106 DRM_AUTH | DRM_RENDER_ALLOW),
107 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
108 DRM_AUTH | DRM_RENDER_ALLOW),
111 static const struct file_operations exynos_drm_driver_fops = {
112 .owner = THIS_MODULE,
114 .mmap = exynos_drm_gem_mmap,
117 .unlocked_ioctl = drm_ioctl,
118 .compat_ioctl = drm_compat_ioctl,
119 .release = drm_release,
122 static struct drm_driver exynos_drm_driver = {
123 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
124 | DRIVER_ATOMIC | DRIVER_RENDER,
125 .open = exynos_drm_open,
126 .lastclose = drm_fb_helper_lastclose,
127 .postclose = exynos_drm_postclose,
128 .gem_free_object_unlocked = exynos_drm_gem_free_object,
129 .gem_vm_ops = &exynos_drm_gem_vm_ops,
130 .dumb_create = exynos_drm_gem_dumb_create,
131 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
132 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
133 .gem_prime_export = drm_gem_prime_export,
134 .gem_prime_import = exynos_drm_gem_prime_import,
135 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
136 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
137 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
138 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
139 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
140 .ioctls = exynos_ioctls,
141 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
142 .fops = &exynos_drm_driver_fops,
146 .major = DRIVER_MAJOR,
147 .minor = DRIVER_MINOR,
150 #ifdef CONFIG_PM_SLEEP
151 static int exynos_drm_suspend(struct device *dev)
153 struct drm_device *drm_dev = dev_get_drvdata(dev);
154 struct exynos_drm_private *private;
156 if (pm_runtime_suspended(dev) || !drm_dev)
159 private = drm_dev->dev_private;
161 drm_kms_helper_poll_disable(drm_dev);
162 exynos_drm_fbdev_suspend(drm_dev);
163 private->suspend_state = drm_atomic_helper_suspend(drm_dev);
164 if (IS_ERR(private->suspend_state)) {
165 exynos_drm_fbdev_resume(drm_dev);
166 drm_kms_helper_poll_enable(drm_dev);
167 return PTR_ERR(private->suspend_state);
173 static int exynos_drm_resume(struct device *dev)
175 struct drm_device *drm_dev = dev_get_drvdata(dev);
176 struct exynos_drm_private *private;
178 if (pm_runtime_suspended(dev) || !drm_dev)
181 private = drm_dev->dev_private;
182 drm_atomic_helper_resume(drm_dev, private->suspend_state);
183 exynos_drm_fbdev_resume(drm_dev);
184 drm_kms_helper_poll_enable(drm_dev);
190 static const struct dev_pm_ops exynos_drm_pm_ops = {
191 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
194 /* forward declaration */
195 static struct platform_driver exynos_drm_platform_driver;
197 struct exynos_drm_driver_info {
198 struct platform_driver *driver;
202 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
203 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
204 #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
205 #define DRM_FIMC_DEVICE BIT(3) /* devices shared with V4L2 subsystem */
207 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
210 * Connector drivers should not be placed before associated crtc drivers,
211 * because connector requires pipe number of its crtc during initialization.
213 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
215 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
216 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
218 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
219 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
221 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
222 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
224 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
225 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
227 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
230 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
233 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
236 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
239 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
240 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
242 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
244 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
245 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
247 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
250 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
253 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
256 &exynos_drm_platform_driver,
261 static int compare_dev(struct device *dev, void *data)
263 return dev == (struct device *)data;
266 static struct component_match *exynos_drm_match_add(struct device *dev)
268 struct component_match *match = NULL;
271 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
272 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
273 struct device *p = NULL, *d;
275 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
278 while ((d = bus_find_device(&platform_bus_type, p,
279 &info->driver->driver,
280 (void *)platform_bus_type.match))) {
283 if (!(info->flags & DRM_FIMC_DEVICE) ||
284 exynos_drm_check_fimc_device(d) == 0)
285 component_match_add(dev, &match,
292 return match ?: ERR_PTR(-ENODEV);
295 static struct device *exynos_drm_get_dma_device(void)
299 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
300 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
303 if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
306 while ((dev = bus_find_device(&platform_bus_type, NULL,
307 &info->driver->driver,
308 (void *)platform_bus_type.match))) {
316 static int exynos_drm_bind(struct device *dev)
318 struct exynos_drm_private *private;
319 struct drm_encoder *encoder;
320 struct drm_device *drm;
321 unsigned int clone_mask;
324 drm = drm_dev_alloc(&exynos_drm_driver, dev);
328 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
334 init_waitqueue_head(&private->wait);
335 spin_lock_init(&private->lock);
337 dev_set_drvdata(dev, drm);
338 drm->dev_private = (void *)private;
340 /* the first real CRTC device is used for all dma mapping operations */
341 private->dma_dev = exynos_drm_get_dma_device();
342 if (!private->dma_dev) {
343 DRM_ERROR("no device found for DMA mapping operations.\n");
345 goto err_free_private;
347 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
348 dev_name(private->dma_dev));
350 /* create common IOMMU mapping for all devices attached to Exynos DRM */
351 ret = drm_create_iommu_mapping(drm);
353 DRM_ERROR("failed to create iommu mapping.\n");
354 goto err_free_private;
357 drm_mode_config_init(drm);
359 exynos_drm_mode_config_init(drm);
361 /* setup possible_clones. */
364 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
365 clone_mask |= (1 << (cnt++));
367 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
368 encoder->possible_clones = clone_mask;
370 /* Try to bind all sub drivers. */
371 ret = component_bind_all(drm->dev, drm);
373 goto err_mode_config_cleanup;
375 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
379 /* Probe non kms sub drivers and virtual display driver. */
380 ret = exynos_drm_device_subdrv_probe(drm);
384 drm_mode_config_reset(drm);
387 * enable drm irq mode.
388 * - with irq_enabled = true, we can use the vblank feature.
390 * P.S. note that we wouldn't use drm irq handler but
391 * just specific driver own one instead because
392 * drm framework supports only one irq handler.
394 drm->irq_enabled = true;
396 /* init kms poll for handling hpd */
397 drm_kms_helper_poll_init(drm);
399 ret = exynos_drm_fbdev_init(drm);
401 goto err_cleanup_poll;
403 /* register the DRM device */
404 ret = drm_dev_register(drm, 0);
406 goto err_cleanup_fbdev;
411 exynos_drm_fbdev_fini(drm);
413 drm_kms_helper_poll_fini(drm);
414 exynos_drm_device_subdrv_remove(drm);
416 component_unbind_all(drm->dev, drm);
417 err_mode_config_cleanup:
418 drm_mode_config_cleanup(drm);
419 drm_release_iommu_mapping(drm);
428 static void exynos_drm_unbind(struct device *dev)
430 struct drm_device *drm = dev_get_drvdata(dev);
432 drm_dev_unregister(drm);
434 exynos_drm_device_subdrv_remove(drm);
436 exynos_drm_fbdev_fini(drm);
437 drm_kms_helper_poll_fini(drm);
439 component_unbind_all(drm->dev, drm);
440 drm_mode_config_cleanup(drm);
441 drm_release_iommu_mapping(drm);
443 kfree(drm->dev_private);
444 drm->dev_private = NULL;
445 dev_set_drvdata(dev, NULL);
450 static const struct component_master_ops exynos_drm_ops = {
451 .bind = exynos_drm_bind,
452 .unbind = exynos_drm_unbind,
455 static int exynos_drm_platform_probe(struct platform_device *pdev)
457 struct component_match *match;
459 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
461 match = exynos_drm_match_add(&pdev->dev);
463 return PTR_ERR(match);
465 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
469 static int exynos_drm_platform_remove(struct platform_device *pdev)
471 component_master_del(&pdev->dev, &exynos_drm_ops);
475 static struct platform_driver exynos_drm_platform_driver = {
476 .probe = exynos_drm_platform_probe,
477 .remove = exynos_drm_platform_remove,
479 .name = "exynos-drm",
480 .pm = &exynos_drm_pm_ops,
484 static void exynos_drm_unregister_devices(void)
488 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
489 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
492 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
495 while ((dev = bus_find_device(&platform_bus_type, NULL,
496 &info->driver->driver,
497 (void *)platform_bus_type.match))) {
499 platform_device_unregister(to_platform_device(dev));
504 static int exynos_drm_register_devices(void)
506 struct platform_device *pdev;
509 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
510 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
512 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
515 pdev = platform_device_register_simple(
516 info->driver->driver.name, -1, NULL, 0);
523 exynos_drm_unregister_devices();
524 return PTR_ERR(pdev);
527 static void exynos_drm_unregister_drivers(void)
531 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
532 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
537 platform_driver_unregister(info->driver);
541 static int exynos_drm_register_drivers(void)
545 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
546 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
551 ret = platform_driver_register(info->driver);
557 exynos_drm_unregister_drivers();
561 static int exynos_drm_init(void)
565 ret = exynos_drm_register_devices();
569 ret = exynos_drm_register_drivers();
571 goto err_unregister_pdevs;
575 err_unregister_pdevs:
576 exynos_drm_unregister_devices();
581 static void exynos_drm_exit(void)
583 exynos_drm_unregister_drivers();
584 exynos_drm_unregister_devices();
587 module_init(exynos_drm_init);
588 module_exit(exynos_drm_exit);
593 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
594 MODULE_LICENSE("GPL");