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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * Authors:
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 * Seung-Woo Kim <sw0312.kim@samsung.com>
8 */
9
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>
15
16#include <drm/drm_atomic.h>
17#include <drm/drm_atomic_helper.h>
18#include <drm/drm_client_setup.h>
19#include <drm/drm_drv.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>
26
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"
35
36#define DRIVER_NAME "exynos"
37#define DRIVER_DESC "Samsung SoC DRM"
38#define DRIVER_DATE "20180330"
39
40/*
41 * Interface history:
42 *
43 * 1.0 - Original version
44 * 1.1 - Upgrade IPP driver to version 2.0
45 */
46#define DRIVER_MAJOR 1
47#define DRIVER_MINOR 1
48
49static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
50{
51 struct drm_exynos_file_private *file_priv;
52 int ret;
53
54 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
55 if (!file_priv)
56 return -ENOMEM;
57
58 file->driver_priv = file_priv;
59 ret = g2d_open(dev, file);
60 if (ret)
61 goto err_file_priv_free;
62
63 return ret;
64
65err_file_priv_free:
66 kfree(file_priv);
67 file->driver_priv = NULL;
68 return ret;
69}
70
71static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
72{
73 g2d_close(dev, file);
74 kfree(file->driver_priv);
75 file->driver_priv = NULL;
76}
77
78static const struct drm_ioctl_desc exynos_ioctls[] = {
79 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
80 DRM_RENDER_ALLOW),
81 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
82 DRM_RENDER_ALLOW),
83 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
84 DRM_RENDER_ALLOW),
85 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
86 DRM_AUTH),
87 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
88 DRM_RENDER_ALLOW),
89 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
90 DRM_RENDER_ALLOW),
91 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
92 DRM_RENDER_ALLOW),
93 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
94 exynos_drm_ipp_get_res_ioctl,
95 DRM_RENDER_ALLOW),
96 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
97 DRM_RENDER_ALLOW),
98 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
99 exynos_drm_ipp_get_limits_ioctl,
100 DRM_RENDER_ALLOW),
101 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
102 DRM_RENDER_ALLOW),
103};
104
105DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);
106
107static 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 .postclose = exynos_drm_postclose,
112 .dumb_create = exynos_drm_gem_dumb_create,
113 .gem_prime_import = exynos_drm_gem_prime_import,
114 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
115 EXYNOS_DRM_FBDEV_DRIVER_OPS,
116 .ioctls = exynos_ioctls,
117 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
118 .fops = &exynos_drm_driver_fops,
119 .name = DRIVER_NAME,
120 .desc = DRIVER_DESC,
121 .date = DRIVER_DATE,
122 .major = DRIVER_MAJOR,
123 .minor = DRIVER_MINOR,
124};
125
126static int exynos_drm_suspend(struct device *dev)
127{
128 struct drm_device *drm_dev = dev_get_drvdata(dev);
129
130 return drm_mode_config_helper_suspend(drm_dev);
131}
132
133static void exynos_drm_resume(struct device *dev)
134{
135 struct drm_device *drm_dev = dev_get_drvdata(dev);
136
137 drm_mode_config_helper_resume(drm_dev);
138}
139
140static const struct dev_pm_ops exynos_drm_pm_ops = {
141 .prepare = exynos_drm_suspend,
142 .complete = exynos_drm_resume,
143};
144
145/* forward declaration */
146static struct platform_driver exynos_drm_platform_driver;
147
148struct exynos_drm_driver_info {
149 struct platform_driver *driver;
150 unsigned int flags;
151};
152
153#define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
154#define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
155#define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */
156
157#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
158
159/*
160 * Connector drivers should not be placed before associated crtc drivers,
161 * because connector requires pipe number of its crtc during initialization.
162 */
163static struct exynos_drm_driver_info exynos_drm_drivers[] = {
164 {
165 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
166 DRM_COMPONENT_DRIVER
167 }, {
168 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
169 DRM_COMPONENT_DRIVER
170 }, {
171 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
172 DRM_COMPONENT_DRIVER
173 }, {
174 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
175 DRM_COMPONENT_DRIVER
176 }, {
177 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
178 DRM_COMPONENT_DRIVER
179 }, {
180 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
181 DRM_COMPONENT_DRIVER
182 }, {
183 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
184 DRM_COMPONENT_DRIVER
185 }, {
186 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
187 DRM_COMPONENT_DRIVER
188 }, {
189 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
190 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
191 }, {
192 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
193 DRM_COMPONENT_DRIVER
194 }, {
195 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
196 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
197 }, {
198 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
199 DRM_COMPONENT_DRIVER
200 }, {
201 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
202 DRM_COMPONENT_DRIVER
203 }, {
204 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
205 DRM_COMPONENT_DRIVER
206 }, {
207 &exynos_drm_platform_driver,
208 DRM_VIRTUAL_DEVICE
209 }
210};
211
212static struct component_match *exynos_drm_match_add(struct device *dev)
213{
214 struct component_match *match = NULL;
215 int i;
216
217 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
218 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
219 struct device *p = NULL, *d;
220
221 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
222 continue;
223
224 while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
225 put_device(p);
226
227 if (!(info->flags & DRM_FIMC_DEVICE) ||
228 exynos_drm_check_fimc_device(d) == 0)
229 component_match_add(dev, &match, component_compare_dev, d);
230 p = d;
231 }
232 put_device(p);
233 }
234
235 return match ?: ERR_PTR(-ENODEV);
236}
237
238static int exynos_drm_bind(struct device *dev)
239{
240 struct exynos_drm_private *private;
241 struct drm_encoder *encoder;
242 struct drm_device *drm;
243 unsigned int clone_mask;
244 int ret;
245
246 drm = drm_dev_alloc(&exynos_drm_driver, dev);
247 if (IS_ERR(drm))
248 return PTR_ERR(drm);
249
250 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
251 if (!private) {
252 ret = -ENOMEM;
253 goto err_free_drm;
254 }
255
256 init_waitqueue_head(&private->wait);
257 spin_lock_init(&private->lock);
258
259 dev_set_drvdata(dev, drm);
260 drm->dev_private = (void *)private;
261
262 drm_mode_config_init(drm);
263
264 exynos_drm_mode_config_init(drm);
265
266 /* setup possible_clones. */
267 clone_mask = 0;
268 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
269 clone_mask |= drm_encoder_mask(encoder);
270
271 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
272 encoder->possible_clones = clone_mask;
273
274 /* Try to bind all sub drivers. */
275 ret = component_bind_all(drm->dev, drm);
276 if (ret)
277 goto err_mode_config_cleanup;
278
279 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
280 if (ret)
281 goto err_unbind_all;
282
283 drm_mode_config_reset(drm);
284
285 /* init kms poll for handling hpd */
286 drm_kms_helper_poll_init(drm);
287
288 /* register the DRM device */
289 ret = drm_dev_register(drm, 0);
290 if (ret < 0)
291 goto err_cleanup_poll;
292
293 drm_client_setup(drm, NULL);
294
295 return 0;
296
297err_cleanup_poll:
298 drm_kms_helper_poll_fini(drm);
299err_unbind_all:
300 component_unbind_all(drm->dev, drm);
301err_mode_config_cleanup:
302 drm_mode_config_cleanup(drm);
303 exynos_drm_cleanup_dma(drm);
304 kfree(private);
305 dev_set_drvdata(dev, NULL);
306err_free_drm:
307 drm_dev_put(drm);
308
309 return ret;
310}
311
312static void exynos_drm_unbind(struct device *dev)
313{
314 struct drm_device *drm = dev_get_drvdata(dev);
315
316 drm_dev_unregister(drm);
317
318 drm_kms_helper_poll_fini(drm);
319 drm_atomic_helper_shutdown(drm);
320
321 component_unbind_all(drm->dev, drm);
322 drm_mode_config_cleanup(drm);
323 exynos_drm_cleanup_dma(drm);
324
325 kfree(drm->dev_private);
326 drm->dev_private = NULL;
327 dev_set_drvdata(dev, NULL);
328
329 drm_dev_put(drm);
330}
331
332static const struct component_master_ops exynos_drm_ops = {
333 .bind = exynos_drm_bind,
334 .unbind = exynos_drm_unbind,
335};
336
337static int exynos_drm_platform_probe(struct platform_device *pdev)
338{
339 struct component_match *match;
340
341 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
342
343 match = exynos_drm_match_add(&pdev->dev);
344 if (IS_ERR(match))
345 return PTR_ERR(match);
346
347 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
348 match);
349}
350
351static void exynos_drm_platform_remove(struct platform_device *pdev)
352{
353 component_master_del(&pdev->dev, &exynos_drm_ops);
354}
355
356static void exynos_drm_platform_shutdown(struct platform_device *pdev)
357{
358 struct drm_device *drm = platform_get_drvdata(pdev);
359
360 if (drm)
361 drm_atomic_helper_shutdown(drm);
362}
363
364static struct platform_driver exynos_drm_platform_driver = {
365 .probe = exynos_drm_platform_probe,
366 .remove = exynos_drm_platform_remove,
367 .shutdown = exynos_drm_platform_shutdown,
368 .driver = {
369 .name = "exynos-drm",
370 .pm = &exynos_drm_pm_ops,
371 },
372};
373
374static void exynos_drm_unregister_devices(void)
375{
376 int i;
377
378 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
379 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
380 struct device *dev;
381
382 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
383 continue;
384
385 while ((dev = platform_find_device_by_driver(NULL,
386 &info->driver->driver))) {
387 put_device(dev);
388 platform_device_unregister(to_platform_device(dev));
389 }
390 }
391}
392
393static int exynos_drm_register_devices(void)
394{
395 struct platform_device *pdev;
396 int i;
397
398 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
399 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
400
401 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
402 continue;
403
404 pdev = platform_device_register_simple(
405 info->driver->driver.name, -1, NULL, 0);
406 if (IS_ERR(pdev))
407 goto fail;
408 }
409
410 return 0;
411fail:
412 exynos_drm_unregister_devices();
413 return PTR_ERR(pdev);
414}
415
416static void exynos_drm_unregister_drivers(void)
417{
418 int i;
419
420 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
421 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
422
423 if (!info->driver)
424 continue;
425
426 platform_driver_unregister(info->driver);
427 }
428}
429
430static int exynos_drm_register_drivers(void)
431{
432 int i, ret;
433
434 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
435 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
436
437 if (!info->driver)
438 continue;
439
440 ret = platform_driver_register(info->driver);
441 if (ret)
442 goto fail;
443 }
444 return 0;
445fail:
446 exynos_drm_unregister_drivers();
447 return ret;
448}
449
450static int exynos_drm_init(void)
451{
452 int ret;
453
454 if (drm_firmware_drivers_only())
455 return -ENODEV;
456
457 ret = exynos_drm_register_devices();
458 if (ret)
459 return ret;
460
461 ret = exynos_drm_register_drivers();
462 if (ret)
463 goto err_unregister_pdevs;
464
465 return 0;
466
467err_unregister_pdevs:
468 exynos_drm_unregister_devices();
469
470 return ret;
471}
472
473static void exynos_drm_exit(void)
474{
475 exynos_drm_unregister_drivers();
476 exynos_drm_unregister_devices();
477}
478
479module_init(exynos_drm_init);
480module_exit(exynos_drm_exit);
481
482MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
483MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
484MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
485MODULE_DESCRIPTION("Samsung SoC DRM Driver");
486MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * Authors:
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 * Seung-Woo Kim <sw0312.kim@samsung.com>
8 */
9
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>
15
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>
26
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"
35
36#define DRIVER_NAME "exynos"
37#define DRIVER_DESC "Samsung SoC DRM"
38#define DRIVER_DATE "20180330"
39
40/*
41 * Interface history:
42 *
43 * 1.0 - Original version
44 * 1.1 - Upgrade IPP driver to version 2.0
45 */
46#define DRIVER_MAJOR 1
47#define DRIVER_MINOR 1
48
49static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
50{
51 struct drm_exynos_file_private *file_priv;
52 int ret;
53
54 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
55 if (!file_priv)
56 return -ENOMEM;
57
58 file->driver_priv = file_priv;
59 ret = g2d_open(dev, file);
60 if (ret)
61 goto err_file_priv_free;
62
63 return ret;
64
65err_file_priv_free:
66 kfree(file_priv);
67 file->driver_priv = NULL;
68 return ret;
69}
70
71static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
72{
73 g2d_close(dev, file);
74 kfree(file->driver_priv);
75 file->driver_priv = NULL;
76}
77
78static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
79 .open = drm_gem_vm_open,
80 .close = drm_gem_vm_close,
81};
82
83static const struct drm_ioctl_desc exynos_ioctls[] = {
84 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
85 DRM_RENDER_ALLOW),
86 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
87 DRM_RENDER_ALLOW),
88 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
89 DRM_RENDER_ALLOW),
90 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
91 DRM_AUTH),
92 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
93 DRM_RENDER_ALLOW),
94 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
95 DRM_RENDER_ALLOW),
96 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
97 DRM_RENDER_ALLOW),
98 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
99 exynos_drm_ipp_get_res_ioctl,
100 DRM_RENDER_ALLOW),
101 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
102 DRM_RENDER_ALLOW),
103 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
104 exynos_drm_ipp_get_limits_ioctl,
105 DRM_RENDER_ALLOW),
106 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
107 DRM_RENDER_ALLOW),
108};
109
110static const struct file_operations exynos_drm_driver_fops = {
111 .owner = THIS_MODULE,
112 .open = drm_open,
113 .mmap = exynos_drm_gem_mmap,
114 .poll = drm_poll,
115 .read = drm_read,
116 .unlocked_ioctl = drm_ioctl,
117 .compat_ioctl = drm_compat_ioctl,
118 .release = drm_release,
119};
120
121static struct drm_driver exynos_drm_driver = {
122 .driver_features = DRIVER_MODESET | DRIVER_GEM
123 | DRIVER_ATOMIC | DRIVER_RENDER,
124 .open = exynos_drm_open,
125 .lastclose = drm_fb_helper_lastclose,
126 .postclose = exynos_drm_postclose,
127 .gem_free_object_unlocked = exynos_drm_gem_free_object,
128 .gem_vm_ops = &exynos_drm_gem_vm_ops,
129 .dumb_create = exynos_drm_gem_dumb_create,
130 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
131 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
132 .gem_prime_import = exynos_drm_gem_prime_import,
133 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
134 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
135 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
136 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
137 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
138 .ioctls = exynos_ioctls,
139 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
140 .fops = &exynos_drm_driver_fops,
141 .name = DRIVER_NAME,
142 .desc = DRIVER_DESC,
143 .date = DRIVER_DATE,
144 .major = DRIVER_MAJOR,
145 .minor = DRIVER_MINOR,
146};
147
148static int exynos_drm_suspend(struct device *dev)
149{
150 struct drm_device *drm_dev = dev_get_drvdata(dev);
151
152 return drm_mode_config_helper_suspend(drm_dev);
153}
154
155static void exynos_drm_resume(struct device *dev)
156{
157 struct drm_device *drm_dev = dev_get_drvdata(dev);
158
159 drm_mode_config_helper_resume(drm_dev);
160}
161
162static const struct dev_pm_ops exynos_drm_pm_ops = {
163 .prepare = exynos_drm_suspend,
164 .complete = exynos_drm_resume,
165};
166
167/* forward declaration */
168static struct platform_driver exynos_drm_platform_driver;
169
170struct exynos_drm_driver_info {
171 struct platform_driver *driver;
172 unsigned int flags;
173};
174
175#define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
176#define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
177#define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */
178
179#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
180
181/*
182 * Connector drivers should not be placed before associated crtc drivers,
183 * because connector requires pipe number of its crtc during initialization.
184 */
185static struct exynos_drm_driver_info exynos_drm_drivers[] = {
186 {
187 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
188 DRM_COMPONENT_DRIVER
189 }, {
190 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
191 DRM_COMPONENT_DRIVER
192 }, {
193 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
194 DRM_COMPONENT_DRIVER
195 }, {
196 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
197 DRM_COMPONENT_DRIVER
198 }, {
199 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
200 DRM_COMPONENT_DRIVER
201 }, {
202 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
203 DRM_COMPONENT_DRIVER
204 }, {
205 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
206 DRM_COMPONENT_DRIVER
207 }, {
208 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
209 DRM_COMPONENT_DRIVER
210 }, {
211 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
212 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
213 }, {
214 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
215 DRM_COMPONENT_DRIVER
216 }, {
217 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
218 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
219 }, {
220 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
221 DRM_COMPONENT_DRIVER
222 }, {
223 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
224 DRM_COMPONENT_DRIVER
225 }, {
226 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
227 DRM_COMPONENT_DRIVER
228 }, {
229 &exynos_drm_platform_driver,
230 DRM_VIRTUAL_DEVICE
231 }
232};
233
234static int compare_dev(struct device *dev, void *data)
235{
236 return dev == (struct device *)data;
237}
238
239static struct component_match *exynos_drm_match_add(struct device *dev)
240{
241 struct component_match *match = NULL;
242 int i;
243
244 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
245 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
246 struct device *p = NULL, *d;
247
248 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
249 continue;
250
251 while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
252 put_device(p);
253
254 if (!(info->flags & DRM_FIMC_DEVICE) ||
255 exynos_drm_check_fimc_device(d) == 0)
256 component_match_add(dev, &match,
257 compare_dev, d);
258 p = d;
259 }
260 put_device(p);
261 }
262
263 return match ?: ERR_PTR(-ENODEV);
264}
265
266static int exynos_drm_bind(struct device *dev)
267{
268 struct exynos_drm_private *private;
269 struct drm_encoder *encoder;
270 struct drm_device *drm;
271 unsigned int clone_mask;
272 int ret;
273
274 drm = drm_dev_alloc(&exynos_drm_driver, dev);
275 if (IS_ERR(drm))
276 return PTR_ERR(drm);
277
278 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
279 if (!private) {
280 ret = -ENOMEM;
281 goto err_free_drm;
282 }
283
284 init_waitqueue_head(&private->wait);
285 spin_lock_init(&private->lock);
286
287 dev_set_drvdata(dev, drm);
288 drm->dev_private = (void *)private;
289
290 drm_mode_config_init(drm);
291
292 exynos_drm_mode_config_init(drm);
293
294 /* setup possible_clones. */
295 clone_mask = 0;
296 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
297 clone_mask |= drm_encoder_mask(encoder);
298
299 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
300 encoder->possible_clones = clone_mask;
301
302 /* Try to bind all sub drivers. */
303 ret = component_bind_all(drm->dev, drm);
304 if (ret)
305 goto err_mode_config_cleanup;
306
307 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
308 if (ret)
309 goto err_unbind_all;
310
311 drm_mode_config_reset(drm);
312
313 /*
314 * enable drm irq mode.
315 * - with irq_enabled = true, we can use the vblank feature.
316 *
317 * P.S. note that we wouldn't use drm irq handler but
318 * just specific driver own one instead because
319 * drm framework supports only one irq handler.
320 */
321 drm->irq_enabled = true;
322
323 /* init kms poll for handling hpd */
324 drm_kms_helper_poll_init(drm);
325
326 ret = exynos_drm_fbdev_init(drm);
327 if (ret)
328 goto err_cleanup_poll;
329
330 /* register the DRM device */
331 ret = drm_dev_register(drm, 0);
332 if (ret < 0)
333 goto err_cleanup_fbdev;
334
335 return 0;
336
337err_cleanup_fbdev:
338 exynos_drm_fbdev_fini(drm);
339err_cleanup_poll:
340 drm_kms_helper_poll_fini(drm);
341err_unbind_all:
342 component_unbind_all(drm->dev, drm);
343err_mode_config_cleanup:
344 drm_mode_config_cleanup(drm);
345 exynos_drm_cleanup_dma(drm);
346 kfree(private);
347err_free_drm:
348 drm_dev_put(drm);
349
350 return ret;
351}
352
353static void exynos_drm_unbind(struct device *dev)
354{
355 struct drm_device *drm = dev_get_drvdata(dev);
356
357 drm_dev_unregister(drm);
358
359 exynos_drm_fbdev_fini(drm);
360 drm_kms_helper_poll_fini(drm);
361
362 component_unbind_all(drm->dev, drm);
363 drm_mode_config_cleanup(drm);
364 exynos_drm_cleanup_dma(drm);
365
366 kfree(drm->dev_private);
367 drm->dev_private = NULL;
368 dev_set_drvdata(dev, NULL);
369
370 drm_dev_put(drm);
371}
372
373static const struct component_master_ops exynos_drm_ops = {
374 .bind = exynos_drm_bind,
375 .unbind = exynos_drm_unbind,
376};
377
378static int exynos_drm_platform_probe(struct platform_device *pdev)
379{
380 struct component_match *match;
381
382 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
383
384 match = exynos_drm_match_add(&pdev->dev);
385 if (IS_ERR(match))
386 return PTR_ERR(match);
387
388 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
389 match);
390}
391
392static int exynos_drm_platform_remove(struct platform_device *pdev)
393{
394 component_master_del(&pdev->dev, &exynos_drm_ops);
395 return 0;
396}
397
398static struct platform_driver exynos_drm_platform_driver = {
399 .probe = exynos_drm_platform_probe,
400 .remove = exynos_drm_platform_remove,
401 .driver = {
402 .name = "exynos-drm",
403 .pm = &exynos_drm_pm_ops,
404 },
405};
406
407static void exynos_drm_unregister_devices(void)
408{
409 int i;
410
411 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
412 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
413 struct device *dev;
414
415 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
416 continue;
417
418 while ((dev = platform_find_device_by_driver(NULL,
419 &info->driver->driver))) {
420 put_device(dev);
421 platform_device_unregister(to_platform_device(dev));
422 }
423 }
424}
425
426static int exynos_drm_register_devices(void)
427{
428 struct platform_device *pdev;
429 int i;
430
431 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
432 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
433
434 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
435 continue;
436
437 pdev = platform_device_register_simple(
438 info->driver->driver.name, -1, NULL, 0);
439 if (IS_ERR(pdev))
440 goto fail;
441 }
442
443 return 0;
444fail:
445 exynos_drm_unregister_devices();
446 return PTR_ERR(pdev);
447}
448
449static void exynos_drm_unregister_drivers(void)
450{
451 int i;
452
453 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
454 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
455
456 if (!info->driver)
457 continue;
458
459 platform_driver_unregister(info->driver);
460 }
461}
462
463static int exynos_drm_register_drivers(void)
464{
465 int i, ret;
466
467 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
468 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
469
470 if (!info->driver)
471 continue;
472
473 ret = platform_driver_register(info->driver);
474 if (ret)
475 goto fail;
476 }
477 return 0;
478fail:
479 exynos_drm_unregister_drivers();
480 return ret;
481}
482
483static int exynos_drm_init(void)
484{
485 int ret;
486
487 ret = exynos_drm_register_devices();
488 if (ret)
489 return ret;
490
491 ret = exynos_drm_register_drivers();
492 if (ret)
493 goto err_unregister_pdevs;
494
495 return 0;
496
497err_unregister_pdevs:
498 exynos_drm_unregister_devices();
499
500 return ret;
501}
502
503static void exynos_drm_exit(void)
504{
505 exynos_drm_unregister_drivers();
506 exynos_drm_unregister_devices();
507}
508
509module_init(exynos_drm_init);
510module_exit(exynos_drm_exit);
511
512MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
513MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
514MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
515MODULE_DESCRIPTION("Samsung SoC DRM Driver");
516MODULE_LICENSE("GPL");