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Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1c248b7d ID |
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> | |
1c248b7d ID |
8 | */ |
9 | ||
af65c804 | 10 | #include <linux/pm_runtime.h> |
760285e7 | 11 | #include <drm/drmP.h> |
a379df19 GP |
12 | #include <drm/drm_atomic.h> |
13 | #include <drm/drm_atomic_helper.h> | |
d2936153 | 14 | #include <drm/drm_fb_helper.h> |
fcd70cd3 | 15 | #include <drm/drm_probe_helper.h> |
1c248b7d | 16 | |
f37cd5e8 | 17 | #include <linux/component.h> |
96f54215 | 18 | |
1c248b7d ID |
19 | #include <drm/exynos_drm.h> |
20 | ||
21 | #include "exynos_drm_drv.h" | |
1c248b7d ID |
22 | #include "exynos_drm_fbdev.h" |
23 | #include "exynos_drm_fb.h" | |
24 | #include "exynos_drm_gem.h" | |
864ee9e6 | 25 | #include "exynos_drm_plane.h" |
9913f74f | 26 | #include "exynos_drm_ipp.h" |
b73d1230 | 27 | #include "exynos_drm_vidi.h" |
d7f1642c | 28 | #include "exynos_drm_g2d.h" |
1c248b7d | 29 | |
0edf9936 | 30 | #define DRIVER_NAME "exynos" |
1c248b7d | 31 | #define DRIVER_DESC "Samsung SoC DRM" |
9913f74f MS |
32 | #define DRIVER_DATE "20180330" |
33 | ||
34 | /* | |
35 | * Interface history: | |
36 | * | |
37 | * 1.0 - Original version | |
38 | * 1.1 - Upgrade IPP driver to version 2.0 | |
39 | */ | |
1c248b7d | 40 | #define DRIVER_MAJOR 1 |
9913f74f | 41 | #define DRIVER_MINOR 1 |
1c248b7d | 42 | |
9084f7b8 JS |
43 | static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) |
44 | { | |
d7f1642c | 45 | struct drm_exynos_file_private *file_priv; |
ba3706c0 | 46 | int ret; |
d7f1642c | 47 | |
d7f1642c JS |
48 | file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); |
49 | if (!file_priv) | |
50 | return -ENOMEM; | |
51 | ||
d7f1642c | 52 | file->driver_priv = file_priv; |
eb4d9796 | 53 | ret = g2d_open(dev, file); |
6ca605f7 | 54 | if (ret) |
307ceaff | 55 | goto err_file_priv_free; |
ba3706c0 | 56 | |
6ca605f7 | 57 | return ret; |
307ceaff | 58 | |
307ceaff | 59 | err_file_priv_free: |
6ca605f7 SK |
60 | kfree(file_priv); |
61 | file->driver_priv = NULL; | |
ba3706c0 | 62 | return ret; |
9084f7b8 JS |
63 | } |
64 | ||
0cbc330e | 65 | static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) |
ccf4d883 | 66 | { |
eb4d9796 | 67 | g2d_close(dev, file); |
53ef299f ID |
68 | kfree(file->driver_priv); |
69 | file->driver_priv = NULL; | |
70 | } | |
71 | ||
78b68556 | 72 | static const struct vm_operations_struct exynos_drm_gem_vm_ops = { |
1c248b7d ID |
73 | .fault = exynos_drm_gem_fault, |
74 | .open = drm_gem_vm_open, | |
75 | .close = drm_gem_vm_close, | |
76 | }; | |
77 | ||
baa70943 | 78 | static const struct drm_ioctl_desc exynos_ioctls[] = { |
1c248b7d | 79 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, |
f8c47144 | 80 | DRM_AUTH | DRM_RENDER_ALLOW), |
6564c65f JS |
81 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl, |
82 | DRM_AUTH | DRM_RENDER_ALLOW), | |
74f230d2 | 83 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl, |
f8c47144 | 84 | DRM_RENDER_ALLOW), |
74f230d2 | 85 | DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl, |
f8c47144 | 86 | DRM_AUTH), |
74f230d2 | 87 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl, |
f8c47144 | 88 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 89 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl, |
f8c47144 | 90 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 91 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl, |
f8c47144 | 92 | DRM_AUTH | DRM_RENDER_ALLOW), |
9913f74f MS |
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), | |
1c248b7d ID |
103 | }; |
104 | ||
ac2bdf73 JS |
105 | static const struct file_operations exynos_drm_driver_fops = { |
106 | .owner = THIS_MODULE, | |
107 | .open = drm_open, | |
108 | .mmap = exynos_drm_gem_mmap, | |
109 | .poll = drm_poll, | |
110 | .read = drm_read, | |
111 | .unlocked_ioctl = drm_ioctl, | |
804d74ab | 112 | .compat_ioctl = drm_compat_ioctl, |
ac2bdf73 JS |
113 | .release = drm_release, |
114 | }; | |
115 | ||
1c248b7d | 116 | static struct drm_driver exynos_drm_driver = { |
c8c38ccf | 117 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
74f230d2 | 118 | | DRIVER_ATOMIC | DRIVER_RENDER, |
9084f7b8 | 119 | .open = exynos_drm_open, |
d2936153 | 120 | .lastclose = drm_fb_helper_lastclose, |
53ef299f | 121 | .postclose = exynos_drm_postclose, |
201f9b97 | 122 | .gem_free_object_unlocked = exynos_drm_gem_free_object, |
1c248b7d ID |
123 | .gem_vm_ops = &exynos_drm_gem_vm_ops, |
124 | .dumb_create = exynos_drm_gem_dumb_create, | |
b2df26c1 ID |
125 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
126 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
01ed50dd | 127 | .gem_prime_export = drm_gem_prime_export, |
89452d4a | 128 | .gem_prime_import = exynos_drm_gem_prime_import, |
01ed50dd JS |
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, | |
5a0202f7 | 133 | .gem_prime_mmap = exynos_drm_gem_prime_mmap, |
1c248b7d | 134 | .ioctls = exynos_ioctls, |
baa70943 | 135 | .num_ioctls = ARRAY_SIZE(exynos_ioctls), |
ac2bdf73 | 136 | .fops = &exynos_drm_driver_fops, |
1c248b7d ID |
137 | .name = DRIVER_NAME, |
138 | .desc = DRIVER_DESC, | |
139 | .date = DRIVER_DATE, | |
140 | .major = DRIVER_MAJOR, | |
141 | .minor = DRIVER_MINOR, | |
142 | }; | |
143 | ||
082ca313 | 144 | static int exynos_drm_suspend(struct device *dev) |
af65c804 SP |
145 | { |
146 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
af65c804 | 147 | |
714c9994 | 148 | return drm_mode_config_helper_suspend(drm_dev); |
af65c804 SP |
149 | } |
150 | ||
dc684af6 | 151 | static void exynos_drm_resume(struct device *dev) |
af65c804 SP |
152 | { |
153 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
af65c804 | 154 | |
714c9994 | 155 | drm_mode_config_helper_resume(drm_dev); |
af65c804 | 156 | } |
af65c804 | 157 | |
af65c804 | 158 | static const struct dev_pm_ops exynos_drm_pm_ops = { |
dc684af6 MS |
159 | .prepare = exynos_drm_suspend, |
160 | .complete = exynos_drm_resume, | |
af65c804 SP |
161 | }; |
162 | ||
86650408 AH |
163 | /* forward declaration */ |
164 | static struct platform_driver exynos_drm_platform_driver; | |
f37cd5e8 | 165 | |
a5fb26cd MS |
166 | struct exynos_drm_driver_info { |
167 | struct platform_driver *driver; | |
168 | unsigned int flags; | |
169 | }; | |
170 | ||
171 | #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */ | |
172 | #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */ | |
29cbf24a | 173 | #define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */ |
a5fb26cd MS |
174 | |
175 | #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL) | |
176 | ||
86650408 AH |
177 | /* |
178 | * Connector drivers should not be placed before associated crtc drivers, | |
179 | * because connector requires pipe number of its crtc during initialization. | |
180 | */ | |
a5fb26cd MS |
181 | static struct exynos_drm_driver_info exynos_drm_drivers[] = { |
182 | { | |
183 | DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD), | |
29cbf24a | 184 | DRM_COMPONENT_DRIVER |
a5fb26cd MS |
185 | }, { |
186 | DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON), | |
29cbf24a | 187 | DRM_COMPONENT_DRIVER |
a5fb26cd MS |
188 | }, { |
189 | DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON), | |
29cbf24a | 190 | DRM_COMPONENT_DRIVER |
a5fb26cd MS |
191 | }, { |
192 | DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER), | |
29cbf24a | 193 | DRM_COMPONENT_DRIVER |
a5fb26cd MS |
194 | }, { |
195 | DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC), | |
196 | DRM_COMPONENT_DRIVER | |
197 | }, { | |
198 | DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP), | |
199 | DRM_COMPONENT_DRIVER | |
200 | }, { | |
201 | DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI), | |
202 | DRM_COMPONENT_DRIVER | |
203 | }, { | |
204 | DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI), | |
205 | DRM_COMPONENT_DRIVER | |
206 | }, { | |
207 | DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI), | |
208 | DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE | |
209 | }, { | |
210 | DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D), | |
eb4d9796 | 211 | DRM_COMPONENT_DRIVER |
a5fb26cd MS |
212 | }, { |
213 | DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC), | |
7a2d5c77 | 214 | DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE, |
a5fb26cd MS |
215 | }, { |
216 | DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR), | |
d8cb9eea | 217 | DRM_COMPONENT_DRIVER |
01fb9185 AP |
218 | }, { |
219 | DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER), | |
220 | DRM_COMPONENT_DRIVER | |
a5fb26cd MS |
221 | }, { |
222 | DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), | |
8b7d3ec8 | 223 | DRM_COMPONENT_DRIVER |
a5fb26cd MS |
224 | }, { |
225 | &exynos_drm_platform_driver, | |
226 | DRM_VIRTUAL_DEVICE | |
227 | } | |
86650408 | 228 | }; |
f37cd5e8 | 229 | |
53c5558d | 230 | static int compare_dev(struct device *dev, void *data) |
f37cd5e8 ID |
231 | { |
232 | return dev == (struct device *)data; | |
233 | } | |
234 | ||
53c5558d | 235 | static struct component_match *exynos_drm_match_add(struct device *dev) |
f37cd5e8 | 236 | { |
53c5558d | 237 | struct component_match *match = NULL; |
86650408 | 238 | int i; |
f37cd5e8 | 239 | |
a5fb26cd MS |
240 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
241 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
86650408 | 242 | struct device *p = NULL, *d; |
f7c2f36f | 243 | |
a5fb26cd MS |
244 | if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER)) |
245 | continue; | |
246 | ||
247 | while ((d = bus_find_device(&platform_bus_type, p, | |
248 | &info->driver->driver, | |
86650408 AH |
249 | (void *)platform_bus_type.match))) { |
250 | put_device(p); | |
7a2d5c77 MS |
251 | |
252 | if (!(info->flags & DRM_FIMC_DEVICE) || | |
253 | exynos_drm_check_fimc_device(d) == 0) | |
254 | component_match_add(dev, &match, | |
255 | compare_dev, d); | |
86650408 | 256 | p = d; |
df5225bc | 257 | } |
86650408 | 258 | put_device(p); |
f37cd5e8 ID |
259 | } |
260 | ||
86650408 | 261 | return match ?: ERR_PTR(-ENODEV); |
f37cd5e8 ID |
262 | } |
263 | ||
264 | static int exynos_drm_bind(struct device *dev) | |
265 | { | |
896bbc3e LP |
266 | struct exynos_drm_private *private; |
267 | struct drm_encoder *encoder; | |
268 | struct drm_device *drm; | |
269 | unsigned int clone_mask; | |
270 | int cnt, ret; | |
271 | ||
272 | drm = drm_dev_alloc(&exynos_drm_driver, dev); | |
273 | if (IS_ERR(drm)) | |
274 | return PTR_ERR(drm); | |
275 | ||
276 | private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); | |
277 | if (!private) { | |
278 | ret = -ENOMEM; | |
279 | goto err_free_drm; | |
280 | } | |
281 | ||
282 | init_waitqueue_head(&private->wait); | |
283 | spin_lock_init(&private->lock); | |
284 | ||
285 | dev_set_drvdata(dev, drm); | |
286 | drm->dev_private = (void *)private; | |
287 | ||
896bbc3e LP |
288 | drm_mode_config_init(drm); |
289 | ||
290 | exynos_drm_mode_config_init(drm); | |
291 | ||
292 | /* setup possible_clones. */ | |
293 | cnt = 0; | |
294 | clone_mask = 0; | |
295 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
296 | clone_mask |= (1 << (cnt++)); | |
297 | ||
298 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
299 | encoder->possible_clones = clone_mask; | |
300 | ||
301 | /* Try to bind all sub drivers. */ | |
302 | ret = component_bind_all(drm->dev, drm); | |
303 | if (ret) | |
304 | goto err_mode_config_cleanup; | |
305 | ||
306 | ret = drm_vblank_init(drm, drm->mode_config.num_crtc); | |
307 | if (ret) | |
308 | goto err_unbind_all; | |
309 | ||
896bbc3e LP |
310 | drm_mode_config_reset(drm); |
311 | ||
312 | /* | |
313 | * enable drm irq mode. | |
314 | * - with irq_enabled = true, we can use the vblank feature. | |
315 | * | |
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. | |
319 | */ | |
320 | drm->irq_enabled = true; | |
321 | ||
322 | /* init kms poll for handling hpd */ | |
323 | drm_kms_helper_poll_init(drm); | |
324 | ||
812fc6f2 TR |
325 | ret = exynos_drm_fbdev_init(drm); |
326 | if (ret) | |
327 | goto err_cleanup_poll; | |
896bbc3e LP |
328 | |
329 | /* register the DRM device */ | |
330 | ret = drm_dev_register(drm, 0); | |
331 | if (ret < 0) | |
332 | goto err_cleanup_fbdev; | |
333 | ||
334 | return 0; | |
335 | ||
336 | err_cleanup_fbdev: | |
337 | exynos_drm_fbdev_fini(drm); | |
812fc6f2 | 338 | err_cleanup_poll: |
896bbc3e | 339 | drm_kms_helper_poll_fini(drm); |
896bbc3e LP |
340 | err_unbind_all: |
341 | component_unbind_all(drm->dev, drm); | |
342 | err_mode_config_cleanup: | |
343 | drm_mode_config_cleanup(drm); | |
23755696 | 344 | exynos_drm_cleanup_dma(drm); |
896bbc3e LP |
345 | kfree(private); |
346 | err_free_drm: | |
aab109b3 | 347 | drm_dev_put(drm); |
896bbc3e LP |
348 | |
349 | return ret; | |
f37cd5e8 ID |
350 | } |
351 | ||
352 | static void exynos_drm_unbind(struct device *dev) | |
353 | { | |
896bbc3e LP |
354 | struct drm_device *drm = dev_get_drvdata(dev); |
355 | ||
356 | drm_dev_unregister(drm); | |
357 | ||
896bbc3e LP |
358 | exynos_drm_fbdev_fini(drm); |
359 | drm_kms_helper_poll_fini(drm); | |
360 | ||
361 | component_unbind_all(drm->dev, drm); | |
362 | drm_mode_config_cleanup(drm); | |
23755696 | 363 | exynos_drm_cleanup_dma(drm); |
896bbc3e LP |
364 | |
365 | kfree(drm->dev_private); | |
366 | drm->dev_private = NULL; | |
238604ca | 367 | dev_set_drvdata(dev, NULL); |
896bbc3e | 368 | |
aab109b3 | 369 | drm_dev_put(drm); |
f37cd5e8 ID |
370 | } |
371 | ||
372 | static const struct component_master_ops exynos_drm_ops = { | |
f37cd5e8 ID |
373 | .bind = exynos_drm_bind, |
374 | .unbind = exynos_drm_unbind, | |
1c248b7d ID |
375 | }; |
376 | ||
417133e4 AH |
377 | static int exynos_drm_platform_probe(struct platform_device *pdev) |
378 | { | |
379 | struct component_match *match; | |
380 | ||
381 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
417133e4 AH |
382 | |
383 | match = exynos_drm_match_add(&pdev->dev); | |
384 | if (IS_ERR(match)) | |
385 | return PTR_ERR(match); | |
386 | ||
387 | return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, | |
388 | match); | |
389 | } | |
390 | ||
391 | static int exynos_drm_platform_remove(struct platform_device *pdev) | |
392 | { | |
393 | component_master_del(&pdev->dev, &exynos_drm_ops); | |
394 | return 0; | |
395 | } | |
396 | ||
397 | static struct platform_driver exynos_drm_platform_driver = { | |
398 | .probe = exynos_drm_platform_probe, | |
399 | .remove = exynos_drm_platform_remove, | |
400 | .driver = { | |
401 | .name = "exynos-drm", | |
402 | .pm = &exynos_drm_pm_ops, | |
403 | }, | |
404 | }; | |
405 | ||
417133e4 | 406 | static void exynos_drm_unregister_devices(void) |
72390677 | 407 | { |
a5fb26cd MS |
408 | int i; |
409 | ||
410 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { | |
411 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
412 | struct device *dev; | |
25928a39 | 413 | |
a5fb26cd MS |
414 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
415 | continue; | |
416 | ||
417 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
418 | &info->driver->driver, | |
419 | (void *)platform_bus_type.match))) { | |
420 | put_device(dev); | |
421 | platform_device_unregister(to_platform_device(dev)); | |
422 | } | |
417133e4 AH |
423 | } |
424 | } | |
7eb8f069 | 425 | |
417133e4 AH |
426 | static int exynos_drm_register_devices(void) |
427 | { | |
a5fb26cd | 428 | struct platform_device *pdev; |
417133e4 AH |
429 | int i; |
430 | ||
a5fb26cd MS |
431 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
432 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 433 | |
a5fb26cd | 434 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
417133e4 | 435 | continue; |
417133e4 | 436 | |
a5fb26cd MS |
437 | pdev = platform_device_register_simple( |
438 | info->driver->driver.name, -1, NULL, 0); | |
439 | if (IS_ERR(pdev)) | |
440 | goto fail; | |
72390677 | 441 | } |
f37cd5e8 | 442 | |
417133e4 | 443 | return 0; |
a5fb26cd MS |
444 | fail: |
445 | exynos_drm_unregister_devices(); | |
446 | return PTR_ERR(pdev); | |
1c248b7d ID |
447 | } |
448 | ||
a5fb26cd | 449 | static void exynos_drm_unregister_drivers(void) |
1c248b7d | 450 | { |
a5fb26cd | 451 | int i; |
417133e4 | 452 | |
a5fb26cd MS |
453 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { |
454 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 455 | |
a5fb26cd | 456 | if (!info->driver) |
417133e4 AH |
457 | continue; |
458 | ||
a5fb26cd | 459 | platform_driver_unregister(info->driver); |
417133e4 | 460 | } |
f37cd5e8 ID |
461 | } |
462 | ||
a5fb26cd | 463 | static int exynos_drm_register_drivers(void) |
417133e4 | 464 | { |
a5fb26cd | 465 | int i, ret; |
417133e4 | 466 | |
a5fb26cd MS |
467 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
468 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 469 | |
a5fb26cd MS |
470 | if (!info->driver) |
471 | continue; | |
417133e4 | 472 | |
a5fb26cd MS |
473 | ret = platform_driver_register(info->driver); |
474 | if (ret) | |
475 | goto fail; | |
476 | } | |
477 | return 0; | |
478 | fail: | |
479 | exynos_drm_unregister_drivers(); | |
480 | return ret; | |
417133e4 AH |
481 | } |
482 | ||
f37cd5e8 ID |
483 | static int exynos_drm_init(void) |
484 | { | |
e3b9e460 | 485 | int ret; |
f37cd5e8 | 486 | |
417133e4 AH |
487 | ret = exynos_drm_register_devices(); |
488 | if (ret) | |
489 | return ret; | |
820687be | 490 | |
a5fb26cd | 491 | ret = exynos_drm_register_drivers(); |
417133e4 AH |
492 | if (ret) |
493 | goto err_unregister_pdevs; | |
f37cd5e8 | 494 | |
f37cd5e8 ID |
495 | return 0; |
496 | ||
417133e4 AH |
497 | err_unregister_pdevs: |
498 | exynos_drm_unregister_devices(); | |
f37cd5e8 ID |
499 | |
500 | return ret; | |
501 | } | |
502 | ||
503 | static void exynos_drm_exit(void) | |
504 | { | |
a5fb26cd | 505 | exynos_drm_unregister_drivers(); |
417133e4 | 506 | exynos_drm_unregister_devices(); |
1c248b7d ID |
507 | } |
508 | ||
509 | module_init(exynos_drm_init); | |
510 | module_exit(exynos_drm_exit); | |
511 | ||
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"); |