1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 * Seung-Woo Kim <sw0312.kim@samsung.com>
10 #include <linux/pm_runtime.h>
12 #include <drm/drm_atomic.h>
13 #include <drm/drm_atomic_helper.h>
14 #include <drm/drm_fb_helper.h>
15 #include <drm/drm_probe_helper.h>
17 #include <linux/component.h>
19 #include <drm/exynos_drm.h>
21 #include "exynos_drm_drv.h"
22 #include "exynos_drm_fbdev.h"
23 #include "exynos_drm_fb.h"
24 #include "exynos_drm_gem.h"
25 #include "exynos_drm_plane.h"
26 #include "exynos_drm_ipp.h"
27 #include "exynos_drm_vidi.h"
28 #include "exynos_drm_g2d.h"
30 #define DRIVER_NAME "exynos"
31 #define DRIVER_DESC "Samsung SoC DRM"
32 #define DRIVER_DATE "20180330"
37 * 1.0 - Original version
38 * 1.1 - Upgrade IPP driver to version 2.0
40 #define DRIVER_MAJOR 1
41 #define DRIVER_MINOR 1
43 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
45 struct drm_exynos_file_private *file_priv;
48 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
52 file->driver_priv = file_priv;
53 ret = g2d_open(dev, file);
55 goto err_file_priv_free;
61 file->driver_priv = NULL;
65 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
68 kfree(file->driver_priv);
69 file->driver_priv = NULL;
72 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
73 .fault = exynos_drm_gem_fault,
74 .open = drm_gem_vm_open,
75 .close = drm_gem_vm_close,
78 static const struct drm_ioctl_desc exynos_ioctls[] = {
79 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
80 DRM_AUTH | DRM_RENDER_ALLOW),
81 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
82 DRM_AUTH | DRM_RENDER_ALLOW),
83 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
85 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
87 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
88 DRM_AUTH | DRM_RENDER_ALLOW),
89 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
90 DRM_AUTH | DRM_RENDER_ALLOW),
91 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
92 DRM_AUTH | DRM_RENDER_ALLOW),
93 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
94 exynos_drm_ipp_get_res_ioctl,
95 DRM_AUTH | DRM_RENDER_ALLOW),
96 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
97 DRM_AUTH | DRM_RENDER_ALLOW),
98 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
99 exynos_drm_ipp_get_limits_ioctl,
100 DRM_AUTH | DRM_RENDER_ALLOW),
101 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
102 DRM_AUTH | DRM_RENDER_ALLOW),
105 static const struct file_operations exynos_drm_driver_fops = {
106 .owner = THIS_MODULE,
108 .mmap = exynos_drm_gem_mmap,
111 .unlocked_ioctl = drm_ioctl,
112 .compat_ioctl = drm_compat_ioctl,
113 .release = drm_release,
116 static struct drm_driver exynos_drm_driver = {
117 .driver_features = DRIVER_MODESET | DRIVER_GEM
118 | DRIVER_ATOMIC | DRIVER_RENDER,
119 .open = exynos_drm_open,
120 .lastclose = drm_fb_helper_lastclose,
121 .postclose = exynos_drm_postclose,
122 .gem_free_object_unlocked = exynos_drm_gem_free_object,
123 .gem_vm_ops = &exynos_drm_gem_vm_ops,
124 .dumb_create = exynos_drm_gem_dumb_create,
125 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
126 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
127 .gem_prime_export = drm_gem_prime_export,
128 .gem_prime_import = exynos_drm_gem_prime_import,
129 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
130 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
131 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
132 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
133 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
134 .ioctls = exynos_ioctls,
135 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
136 .fops = &exynos_drm_driver_fops,
140 .major = DRIVER_MAJOR,
141 .minor = DRIVER_MINOR,
144 static int exynos_drm_suspend(struct device *dev)
146 struct drm_device *drm_dev = dev_get_drvdata(dev);
148 return drm_mode_config_helper_suspend(drm_dev);
151 static void exynos_drm_resume(struct device *dev)
153 struct drm_device *drm_dev = dev_get_drvdata(dev);
155 drm_mode_config_helper_resume(drm_dev);
158 static const struct dev_pm_ops exynos_drm_pm_ops = {
159 .prepare = exynos_drm_suspend,
160 .complete = exynos_drm_resume,
163 /* forward declaration */
164 static struct platform_driver exynos_drm_platform_driver;
166 struct exynos_drm_driver_info {
167 struct platform_driver *driver;
171 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
172 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
173 #define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */
175 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
178 * Connector drivers should not be placed before associated crtc drivers,
179 * because connector requires pipe number of its crtc during initialization.
181 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
183 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
186 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
189 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
192 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
195 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
198 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
201 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
204 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
207 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
208 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
210 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
213 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
214 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
216 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
219 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
222 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
225 &exynos_drm_platform_driver,
230 static int compare_dev(struct device *dev, void *data)
232 return dev == (struct device *)data;
235 static struct component_match *exynos_drm_match_add(struct device *dev)
237 struct component_match *match = NULL;
240 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
241 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
242 struct device *p = NULL, *d;
244 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
247 while ((d = bus_find_device(&platform_bus_type, p,
248 &info->driver->driver,
249 (void *)platform_bus_type.match))) {
252 if (!(info->flags & DRM_FIMC_DEVICE) ||
253 exynos_drm_check_fimc_device(d) == 0)
254 component_match_add(dev, &match,
261 return match ?: ERR_PTR(-ENODEV);
264 static int exynos_drm_bind(struct device *dev)
266 struct exynos_drm_private *private;
267 struct drm_encoder *encoder;
268 struct drm_device *drm;
269 unsigned int clone_mask;
272 drm = drm_dev_alloc(&exynos_drm_driver, dev);
276 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
282 init_waitqueue_head(&private->wait);
283 spin_lock_init(&private->lock);
285 dev_set_drvdata(dev, drm);
286 drm->dev_private = (void *)private;
288 drm_mode_config_init(drm);
290 exynos_drm_mode_config_init(drm);
292 /* setup possible_clones. */
295 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
296 clone_mask |= (1 << (cnt++));
298 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
299 encoder->possible_clones = clone_mask;
301 /* Try to bind all sub drivers. */
302 ret = component_bind_all(drm->dev, drm);
304 goto err_mode_config_cleanup;
306 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
310 drm_mode_config_reset(drm);
313 * enable drm irq mode.
314 * - with irq_enabled = true, we can use the vblank feature.
316 * P.S. note that we wouldn't use drm irq handler but
317 * just specific driver own one instead because
318 * drm framework supports only one irq handler.
320 drm->irq_enabled = true;
322 /* init kms poll for handling hpd */
323 drm_kms_helper_poll_init(drm);
325 ret = exynos_drm_fbdev_init(drm);
327 goto err_cleanup_poll;
329 /* register the DRM device */
330 ret = drm_dev_register(drm, 0);
332 goto err_cleanup_fbdev;
337 exynos_drm_fbdev_fini(drm);
339 drm_kms_helper_poll_fini(drm);
341 component_unbind_all(drm->dev, drm);
342 err_mode_config_cleanup:
343 drm_mode_config_cleanup(drm);
344 exynos_drm_cleanup_dma(drm);
352 static void exynos_drm_unbind(struct device *dev)
354 struct drm_device *drm = dev_get_drvdata(dev);
356 drm_dev_unregister(drm);
358 exynos_drm_fbdev_fini(drm);
359 drm_kms_helper_poll_fini(drm);
361 component_unbind_all(drm->dev, drm);
362 drm_mode_config_cleanup(drm);
363 exynos_drm_cleanup_dma(drm);
365 kfree(drm->dev_private);
366 drm->dev_private = NULL;
367 dev_set_drvdata(dev, NULL);
372 static const struct component_master_ops exynos_drm_ops = {
373 .bind = exynos_drm_bind,
374 .unbind = exynos_drm_unbind,
377 static int exynos_drm_platform_probe(struct platform_device *pdev)
379 struct component_match *match;
381 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
383 match = exynos_drm_match_add(&pdev->dev);
385 return PTR_ERR(match);
387 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
391 static int exynos_drm_platform_remove(struct platform_device *pdev)
393 component_master_del(&pdev->dev, &exynos_drm_ops);
397 static struct platform_driver exynos_drm_platform_driver = {
398 .probe = exynos_drm_platform_probe,
399 .remove = exynos_drm_platform_remove,
401 .name = "exynos-drm",
402 .pm = &exynos_drm_pm_ops,
406 static void exynos_drm_unregister_devices(void)
410 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
411 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
414 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
417 while ((dev = bus_find_device(&platform_bus_type, NULL,
418 &info->driver->driver,
419 (void *)platform_bus_type.match))) {
421 platform_device_unregister(to_platform_device(dev));
426 static int exynos_drm_register_devices(void)
428 struct platform_device *pdev;
431 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
432 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
434 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
437 pdev = platform_device_register_simple(
438 info->driver->driver.name, -1, NULL, 0);
445 exynos_drm_unregister_devices();
446 return PTR_ERR(pdev);
449 static void exynos_drm_unregister_drivers(void)
453 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
454 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
459 platform_driver_unregister(info->driver);
463 static int exynos_drm_register_drivers(void)
467 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
468 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
473 ret = platform_driver_register(info->driver);
479 exynos_drm_unregister_drivers();
483 static int exynos_drm_init(void)
487 ret = exynos_drm_register_devices();
491 ret = exynos_drm_register_drivers();
493 goto err_unregister_pdevs;
497 err_unregister_pdevs:
498 exynos_drm_unregister_devices();
503 static void exynos_drm_exit(void)
505 exynos_drm_unregister_drivers();
506 exynos_drm_unregister_devices();
509 module_init(exynos_drm_init);
510 module_exit(exynos_drm_exit);
512 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
513 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
514 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
515 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
516 MODULE_LICENSE("GPL");