1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
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_file.h>
20 #include <drm/drm_fourcc.h>
21 #include <drm/drm_ioctl.h>
22 #include <drm/drm_probe_helper.h>
23 #include <drm/drm_vblank.h>
24 #include <drm/exynos_drm.h>
26 #include "exynos_drm_drv.h"
27 #include "exynos_drm_fb.h"
28 #include "exynos_drm_fbdev.h"
29 #include "exynos_drm_g2d.h"
30 #include "exynos_drm_gem.h"
31 #include "exynos_drm_ipp.h"
32 #include "exynos_drm_plane.h"
33 #include "exynos_drm_vidi.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;
58 ret = g2d_open(dev, file);
60 goto err_file_priv_free;
66 file->driver_priv = NULL;
70 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
73 kfree(file->driver_priv);
74 file->driver_priv = NULL;
77 static const struct drm_ioctl_desc exynos_ioctls[] = {
78 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
80 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
82 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
84 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
86 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
88 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
90 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
92 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
93 exynos_drm_ipp_get_res_ioctl,
95 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
97 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
98 exynos_drm_ipp_get_limits_ioctl,
100 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
104 DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);
106 static const struct drm_driver exynos_drm_driver = {
107 .driver_features = DRIVER_MODESET | DRIVER_GEM
108 | DRIVER_ATOMIC | DRIVER_RENDER,
109 .open = exynos_drm_open,
110 .postclose = exynos_drm_postclose,
111 .dumb_create = exynos_drm_gem_dumb_create,
112 .gem_prime_import = exynos_drm_gem_prime_import,
113 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
114 .ioctls = exynos_ioctls,
115 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
116 .fops = &exynos_drm_driver_fops,
120 .major = DRIVER_MAJOR,
121 .minor = DRIVER_MINOR,
124 static int exynos_drm_suspend(struct device *dev)
126 struct drm_device *drm_dev = dev_get_drvdata(dev);
128 return drm_mode_config_helper_suspend(drm_dev);
131 static void exynos_drm_resume(struct device *dev)
133 struct drm_device *drm_dev = dev_get_drvdata(dev);
135 drm_mode_config_helper_resume(drm_dev);
138 static const struct dev_pm_ops exynos_drm_pm_ops = {
139 .prepare = exynos_drm_suspend,
140 .complete = exynos_drm_resume,
143 /* forward declaration */
144 static struct platform_driver exynos_drm_platform_driver;
146 struct exynos_drm_driver_info {
147 struct platform_driver *driver;
151 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
152 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
153 #define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */
155 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
158 * Connector drivers should not be placed before associated crtc drivers,
159 * because connector requires pipe number of its crtc during initialization.
161 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
163 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
166 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
169 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
172 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
175 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
178 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
181 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
184 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
187 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
188 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
190 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
193 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
194 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
196 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
199 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
202 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
205 &exynos_drm_platform_driver,
210 static struct component_match *exynos_drm_match_add(struct device *dev)
212 struct component_match *match = NULL;
215 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
216 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
217 struct device *p = NULL, *d;
219 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
222 while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
225 if (!(info->flags & DRM_FIMC_DEVICE) ||
226 exynos_drm_check_fimc_device(d) == 0)
227 component_match_add(dev, &match, component_compare_dev, d);
233 return match ?: ERR_PTR(-ENODEV);
236 static int exynos_drm_bind(struct device *dev)
238 struct exynos_drm_private *private;
239 struct drm_encoder *encoder;
240 struct drm_device *drm;
241 unsigned int clone_mask;
244 drm = drm_dev_alloc(&exynos_drm_driver, dev);
248 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
254 init_waitqueue_head(&private->wait);
255 spin_lock_init(&private->lock);
257 dev_set_drvdata(dev, drm);
258 drm->dev_private = (void *)private;
260 drm_mode_config_init(drm);
262 exynos_drm_mode_config_init(drm);
264 /* setup possible_clones. */
266 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
267 clone_mask |= drm_encoder_mask(encoder);
269 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
270 encoder->possible_clones = clone_mask;
272 /* Try to bind all sub drivers. */
273 ret = component_bind_all(drm->dev, drm);
275 goto err_mode_config_cleanup;
277 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
281 drm_mode_config_reset(drm);
283 /* init kms poll for handling hpd */
284 drm_kms_helper_poll_init(drm);
286 /* register the DRM device */
287 ret = drm_dev_register(drm, 0);
289 goto err_cleanup_poll;
291 exynos_drm_fbdev_setup(drm);
296 drm_kms_helper_poll_fini(drm);
298 component_unbind_all(drm->dev, drm);
299 err_mode_config_cleanup:
300 drm_mode_config_cleanup(drm);
301 exynos_drm_cleanup_dma(drm);
303 dev_set_drvdata(dev, NULL);
310 static void exynos_drm_unbind(struct device *dev)
312 struct drm_device *drm = dev_get_drvdata(dev);
314 drm_dev_unregister(drm);
316 drm_kms_helper_poll_fini(drm);
317 drm_atomic_helper_shutdown(drm);
319 component_unbind_all(drm->dev, drm);
320 drm_mode_config_cleanup(drm);
321 exynos_drm_cleanup_dma(drm);
323 kfree(drm->dev_private);
324 drm->dev_private = NULL;
325 dev_set_drvdata(dev, NULL);
330 static const struct component_master_ops exynos_drm_ops = {
331 .bind = exynos_drm_bind,
332 .unbind = exynos_drm_unbind,
335 static int exynos_drm_platform_probe(struct platform_device *pdev)
337 struct component_match *match;
339 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
341 match = exynos_drm_match_add(&pdev->dev);
343 return PTR_ERR(match);
345 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
349 static void exynos_drm_platform_remove(struct platform_device *pdev)
351 component_master_del(&pdev->dev, &exynos_drm_ops);
354 static void exynos_drm_platform_shutdown(struct platform_device *pdev)
356 struct drm_device *drm = platform_get_drvdata(pdev);
359 drm_atomic_helper_shutdown(drm);
362 static struct platform_driver exynos_drm_platform_driver = {
363 .probe = exynos_drm_platform_probe,
364 .remove_new = exynos_drm_platform_remove,
365 .shutdown = exynos_drm_platform_shutdown,
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);
483 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
484 MODULE_LICENSE("GPL");