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/component.h>
11 #include <linux/dma-mapping.h>
12 #include <linux/platform_device.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/uaccess.h>
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_drv.h>
19 #include <drm/drm_fb_helper.h>
20 #include <drm/drm_file.h>
21 #include <drm/drm_fourcc.h>
22 #include <drm/drm_ioctl.h>
23 #include <drm/drm_probe_helper.h>
24 #include <drm/drm_vblank.h>
25 #include <drm/exynos_drm.h>
27 #include "exynos_drm_drv.h"
28 #include "exynos_drm_fb.h"
29 #include "exynos_drm_fbdev.h"
30 #include "exynos_drm_g2d.h"
31 #include "exynos_drm_gem.h"
32 #include "exynos_drm_ipp.h"
33 #include "exynos_drm_plane.h"
34 #include "exynos_drm_vidi.h"
36 #define DRIVER_NAME "exynos"
37 #define DRIVER_DESC "Samsung SoC DRM"
38 #define DRIVER_DATE "20180330"
43 * 1.0 - Original version
44 * 1.1 - Upgrade IPP driver to version 2.0
46 #define DRIVER_MAJOR 1
47 #define DRIVER_MINOR 1
49 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
51 struct drm_exynos_file_private *file_priv;
54 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
58 file->driver_priv = file_priv;
59 ret = g2d_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)
74 kfree(file->driver_priv);
75 file->driver_priv = NULL;
78 static const struct drm_ioctl_desc exynos_ioctls[] = {
79 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
81 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
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,
89 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
91 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
93 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
94 exynos_drm_ipp_get_res_ioctl,
96 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
98 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
99 exynos_drm_ipp_get_limits_ioctl,
101 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
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 .dumb_create = exynos_drm_gem_dumb_create,
123 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
124 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
125 .gem_prime_import = exynos_drm_gem_prime_import,
126 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
127 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
128 .ioctls = exynos_ioctls,
129 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
130 .fops = &exynos_drm_driver_fops,
134 .major = DRIVER_MAJOR,
135 .minor = DRIVER_MINOR,
138 static int exynos_drm_suspend(struct device *dev)
140 struct drm_device *drm_dev = dev_get_drvdata(dev);
142 return drm_mode_config_helper_suspend(drm_dev);
145 static void exynos_drm_resume(struct device *dev)
147 struct drm_device *drm_dev = dev_get_drvdata(dev);
149 drm_mode_config_helper_resume(drm_dev);
152 static const struct dev_pm_ops exynos_drm_pm_ops = {
153 .prepare = exynos_drm_suspend,
154 .complete = exynos_drm_resume,
157 /* forward declaration */
158 static struct platform_driver exynos_drm_platform_driver;
160 struct exynos_drm_driver_info {
161 struct platform_driver *driver;
165 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
166 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
167 #define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */
169 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
172 * Connector drivers should not be placed before associated crtc drivers,
173 * because connector requires pipe number of its crtc during initialization.
175 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
177 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
180 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
183 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
186 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
189 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
192 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
195 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
198 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
201 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
202 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
204 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
207 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
208 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
210 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
213 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
216 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
219 &exynos_drm_platform_driver,
224 static int compare_dev(struct device *dev, void *data)
226 return dev == (struct device *)data;
229 static struct component_match *exynos_drm_match_add(struct device *dev)
231 struct component_match *match = NULL;
234 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
235 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
236 struct device *p = NULL, *d;
238 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
241 while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
244 if (!(info->flags & DRM_FIMC_DEVICE) ||
245 exynos_drm_check_fimc_device(d) == 0)
246 component_match_add(dev, &match,
253 return match ?: ERR_PTR(-ENODEV);
256 static int exynos_drm_bind(struct device *dev)
258 struct exynos_drm_private *private;
259 struct drm_encoder *encoder;
260 struct drm_device *drm;
261 unsigned int clone_mask;
264 drm = drm_dev_alloc(&exynos_drm_driver, dev);
268 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
274 init_waitqueue_head(&private->wait);
275 spin_lock_init(&private->lock);
277 dev_set_drvdata(dev, drm);
278 drm->dev_private = (void *)private;
280 drm_mode_config_init(drm);
282 exynos_drm_mode_config_init(drm);
284 /* setup possible_clones. */
286 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
287 clone_mask |= drm_encoder_mask(encoder);
289 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
290 encoder->possible_clones = clone_mask;
292 /* Try to bind all sub drivers. */
293 ret = component_bind_all(drm->dev, drm);
295 goto err_mode_config_cleanup;
297 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
301 drm_mode_config_reset(drm);
304 * enable drm irq mode.
305 * - with irq_enabled = true, we can use the vblank feature.
307 * P.S. note that we wouldn't use drm irq handler but
308 * just specific driver own one instead because
309 * drm framework supports only one irq handler.
311 drm->irq_enabled = true;
313 /* init kms poll for handling hpd */
314 drm_kms_helper_poll_init(drm);
316 ret = exynos_drm_fbdev_init(drm);
318 goto err_cleanup_poll;
320 /* register the DRM device */
321 ret = drm_dev_register(drm, 0);
323 goto err_cleanup_fbdev;
328 exynos_drm_fbdev_fini(drm);
330 drm_kms_helper_poll_fini(drm);
332 component_unbind_all(drm->dev, drm);
333 err_mode_config_cleanup:
334 drm_mode_config_cleanup(drm);
335 exynos_drm_cleanup_dma(drm);
343 static void exynos_drm_unbind(struct device *dev)
345 struct drm_device *drm = dev_get_drvdata(dev);
347 drm_dev_unregister(drm);
349 exynos_drm_fbdev_fini(drm);
350 drm_kms_helper_poll_fini(drm);
352 component_unbind_all(drm->dev, drm);
353 drm_mode_config_cleanup(drm);
354 exynos_drm_cleanup_dma(drm);
356 kfree(drm->dev_private);
357 drm->dev_private = NULL;
358 dev_set_drvdata(dev, NULL);
363 static const struct component_master_ops exynos_drm_ops = {
364 .bind = exynos_drm_bind,
365 .unbind = exynos_drm_unbind,
368 static int exynos_drm_platform_probe(struct platform_device *pdev)
370 struct component_match *match;
372 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
374 match = exynos_drm_match_add(&pdev->dev);
376 return PTR_ERR(match);
378 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
382 static int exynos_drm_platform_remove(struct platform_device *pdev)
384 component_master_del(&pdev->dev, &exynos_drm_ops);
388 static struct platform_driver exynos_drm_platform_driver = {
389 .probe = exynos_drm_platform_probe,
390 .remove = exynos_drm_platform_remove,
392 .name = "exynos-drm",
393 .pm = &exynos_drm_pm_ops,
397 static void exynos_drm_unregister_devices(void)
401 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
402 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
405 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
408 while ((dev = platform_find_device_by_driver(NULL,
409 &info->driver->driver))) {
411 platform_device_unregister(to_platform_device(dev));
416 static int exynos_drm_register_devices(void)
418 struct platform_device *pdev;
421 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
422 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
424 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
427 pdev = platform_device_register_simple(
428 info->driver->driver.name, -1, NULL, 0);
435 exynos_drm_unregister_devices();
436 return PTR_ERR(pdev);
439 static void exynos_drm_unregister_drivers(void)
443 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
444 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
449 platform_driver_unregister(info->driver);
453 static int exynos_drm_register_drivers(void)
457 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
458 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
463 ret = platform_driver_register(info->driver);
469 exynos_drm_unregister_drivers();
473 static int exynos_drm_init(void)
477 ret = exynos_drm_register_devices();
481 ret = exynos_drm_register_drivers();
483 goto err_unregister_pdevs;
487 err_unregister_pdevs:
488 exynos_drm_unregister_devices();
493 static void exynos_drm_exit(void)
495 exynos_drm_unregister_drivers();
496 exynos_drm_unregister_devices();
499 module_init(exynos_drm_init);
500 module_exit(exynos_drm_exit);
502 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
503 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
504 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
505 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
506 MODULE_LICENSE("GPL");