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 DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);
107 static const struct drm_driver exynos_drm_driver = {
108 .driver_features = DRIVER_MODESET | DRIVER_GEM
109 | DRIVER_ATOMIC | DRIVER_RENDER,
110 .open = exynos_drm_open,
111 .lastclose = drm_fb_helper_lastclose,
112 .postclose = exynos_drm_postclose,
113 .dumb_create = exynos_drm_gem_dumb_create,
114 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
115 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
116 .gem_prime_import = exynos_drm_gem_prime_import,
117 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
118 .gem_prime_mmap = drm_gem_prime_mmap,
119 .ioctls = exynos_ioctls,
120 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
121 .fops = &exynos_drm_driver_fops,
125 .major = DRIVER_MAJOR,
126 .minor = DRIVER_MINOR,
129 static int exynos_drm_suspend(struct device *dev)
131 struct drm_device *drm_dev = dev_get_drvdata(dev);
133 return drm_mode_config_helper_suspend(drm_dev);
136 static void exynos_drm_resume(struct device *dev)
138 struct drm_device *drm_dev = dev_get_drvdata(dev);
140 drm_mode_config_helper_resume(drm_dev);
143 static const struct dev_pm_ops exynos_drm_pm_ops = {
144 .prepare = exynos_drm_suspend,
145 .complete = exynos_drm_resume,
148 /* forward declaration */
149 static struct platform_driver exynos_drm_platform_driver;
151 struct exynos_drm_driver_info {
152 struct platform_driver *driver;
156 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
157 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
158 #define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */
160 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
163 * Connector drivers should not be placed before associated crtc drivers,
164 * because connector requires pipe number of its crtc during initialization.
166 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
168 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
171 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
174 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
177 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
180 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
183 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
186 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
189 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
192 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
193 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
195 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
198 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
199 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
201 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
204 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
207 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
210 &exynos_drm_platform_driver,
215 static struct component_match *exynos_drm_match_add(struct device *dev)
217 struct component_match *match = NULL;
220 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
221 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
222 struct device *p = NULL, *d;
224 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
227 while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
230 if (!(info->flags & DRM_FIMC_DEVICE) ||
231 exynos_drm_check_fimc_device(d) == 0)
232 component_match_add(dev, &match, component_compare_dev, d);
238 return match ?: ERR_PTR(-ENODEV);
241 static int exynos_drm_bind(struct device *dev)
243 struct exynos_drm_private *private;
244 struct drm_encoder *encoder;
245 struct drm_device *drm;
246 unsigned int clone_mask;
249 drm = drm_dev_alloc(&exynos_drm_driver, dev);
253 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
259 init_waitqueue_head(&private->wait);
260 spin_lock_init(&private->lock);
262 dev_set_drvdata(dev, drm);
263 drm->dev_private = (void *)private;
265 drm_mode_config_init(drm);
267 exynos_drm_mode_config_init(drm);
269 /* setup possible_clones. */
271 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
272 clone_mask |= drm_encoder_mask(encoder);
274 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
275 encoder->possible_clones = clone_mask;
277 /* Try to bind all sub drivers. */
278 ret = component_bind_all(drm->dev, drm);
280 goto err_mode_config_cleanup;
282 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
286 drm_mode_config_reset(drm);
288 /* init kms poll for handling hpd */
289 drm_kms_helper_poll_init(drm);
291 ret = exynos_drm_fbdev_init(drm);
293 goto err_cleanup_poll;
295 /* register the DRM device */
296 ret = drm_dev_register(drm, 0);
298 goto err_cleanup_fbdev;
303 exynos_drm_fbdev_fini(drm);
305 drm_kms_helper_poll_fini(drm);
307 component_unbind_all(drm->dev, drm);
308 err_mode_config_cleanup:
309 drm_mode_config_cleanup(drm);
310 exynos_drm_cleanup_dma(drm);
318 static void exynos_drm_unbind(struct device *dev)
320 struct drm_device *drm = dev_get_drvdata(dev);
322 drm_dev_unregister(drm);
324 exynos_drm_fbdev_fini(drm);
325 drm_kms_helper_poll_fini(drm);
327 component_unbind_all(drm->dev, drm);
328 drm_mode_config_cleanup(drm);
329 exynos_drm_cleanup_dma(drm);
331 kfree(drm->dev_private);
332 drm->dev_private = NULL;
333 dev_set_drvdata(dev, NULL);
338 static const struct component_master_ops exynos_drm_ops = {
339 .bind = exynos_drm_bind,
340 .unbind = exynos_drm_unbind,
343 static int exynos_drm_platform_probe(struct platform_device *pdev)
345 struct component_match *match;
347 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
349 match = exynos_drm_match_add(&pdev->dev);
351 return PTR_ERR(match);
353 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
357 static int exynos_drm_platform_remove(struct platform_device *pdev)
359 component_master_del(&pdev->dev, &exynos_drm_ops);
363 static struct platform_driver exynos_drm_platform_driver = {
364 .probe = exynos_drm_platform_probe,
365 .remove = exynos_drm_platform_remove,
367 .name = "exynos-drm",
368 .pm = &exynos_drm_pm_ops,
372 static void exynos_drm_unregister_devices(void)
376 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
377 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
380 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
383 while ((dev = platform_find_device_by_driver(NULL,
384 &info->driver->driver))) {
386 platform_device_unregister(to_platform_device(dev));
391 static int exynos_drm_register_devices(void)
393 struct platform_device *pdev;
396 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
397 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
399 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
402 pdev = platform_device_register_simple(
403 info->driver->driver.name, -1, NULL, 0);
410 exynos_drm_unregister_devices();
411 return PTR_ERR(pdev);
414 static void exynos_drm_unregister_drivers(void)
418 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
419 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
424 platform_driver_unregister(info->driver);
428 static int exynos_drm_register_drivers(void)
432 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
433 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
438 ret = platform_driver_register(info->driver);
444 exynos_drm_unregister_drivers();
448 static int exynos_drm_init(void)
452 if (drm_firmware_drivers_only())
455 ret = exynos_drm_register_devices();
459 ret = exynos_drm_register_drivers();
461 goto err_unregister_pdevs;
465 err_unregister_pdevs:
466 exynos_drm_unregister_devices();
471 static void exynos_drm_exit(void)
473 exynos_drm_unregister_drivers();
474 exynos_drm_unregister_devices();
477 module_init(exynos_drm_init);
478 module_exit(exynos_drm_exit);
480 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
481 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
482 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
483 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
484 MODULE_LICENSE("GPL");