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Commit | Line | Data |
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1c248b7d ID |
1 | /* |
2 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
3 | * Authors: | |
4 | * Inki Dae <inki.dae@samsung.com> | |
5 | * Joonyoung Shim <jy0922.shim@samsung.com> | |
6 | * Seung-Woo Kim <sw0312.kim@samsung.com> | |
7 | * | |
d81aecb5 ID |
8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
1c248b7d ID |
12 | */ |
13 | ||
af65c804 | 14 | #include <linux/pm_runtime.h> |
760285e7 | 15 | #include <drm/drmP.h> |
a379df19 GP |
16 | #include <drm/drm_atomic.h> |
17 | #include <drm/drm_atomic_helper.h> | |
760285e7 | 18 | #include <drm/drm_crtc_helper.h> |
d2936153 | 19 | #include <drm/drm_fb_helper.h> |
1c248b7d | 20 | |
f37cd5e8 | 21 | #include <linux/component.h> |
96f54215 | 22 | |
1c248b7d ID |
23 | #include <drm/exynos_drm.h> |
24 | ||
25 | #include "exynos_drm_drv.h" | |
1c248b7d ID |
26 | #include "exynos_drm_fbdev.h" |
27 | #include "exynos_drm_fb.h" | |
28 | #include "exynos_drm_gem.h" | |
864ee9e6 | 29 | #include "exynos_drm_plane.h" |
b73d1230 | 30 | #include "exynos_drm_vidi.h" |
d7f1642c | 31 | #include "exynos_drm_g2d.h" |
0519f9a1 | 32 | #include "exynos_drm_iommu.h" |
1c248b7d | 33 | |
0edf9936 | 34 | #define DRIVER_NAME "exynos" |
1c248b7d ID |
35 | #define DRIVER_DESC "Samsung SoC DRM" |
36 | #define DRIVER_DATE "20110530" | |
37 | #define DRIVER_MAJOR 1 | |
38 | #define DRIVER_MINOR 0 | |
39 | ||
38d868e4 VS |
40 | int exynos_atomic_check(struct drm_device *dev, |
41 | struct drm_atomic_state *state) | |
42 | { | |
43 | int ret; | |
44 | ||
45 | ret = drm_atomic_helper_check_modeset(dev, state); | |
46 | if (ret) | |
47 | return ret; | |
48 | ||
49 | ret = drm_atomic_normalize_zpos(dev, state); | |
50 | if (ret) | |
51 | return ret; | |
52 | ||
53 | ret = drm_atomic_helper_check_planes(dev, state); | |
54 | if (ret) | |
55 | return ret; | |
56 | ||
57 | return ret; | |
58 | } | |
59 | ||
9084f7b8 JS |
60 | static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) |
61 | { | |
d7f1642c | 62 | struct drm_exynos_file_private *file_priv; |
ba3706c0 | 63 | int ret; |
d7f1642c | 64 | |
d7f1642c JS |
65 | file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); |
66 | if (!file_priv) | |
67 | return -ENOMEM; | |
68 | ||
d7f1642c | 69 | file->driver_priv = file_priv; |
b2df26c1 | 70 | |
ba3706c0 | 71 | ret = exynos_drm_subdrv_open(dev, file); |
6ca605f7 | 72 | if (ret) |
307ceaff | 73 | goto err_file_priv_free; |
ba3706c0 | 74 | |
6ca605f7 | 75 | return ret; |
307ceaff | 76 | |
307ceaff | 77 | err_file_priv_free: |
6ca605f7 SK |
78 | kfree(file_priv); |
79 | file->driver_priv = NULL; | |
ba3706c0 | 80 | return ret; |
9084f7b8 JS |
81 | } |
82 | ||
0cbc330e | 83 | static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) |
ccf4d883 | 84 | { |
b13b4d1b | 85 | exynos_drm_subdrv_close(dev, file); |
53ef299f ID |
86 | kfree(file->driver_priv); |
87 | file->driver_priv = NULL; | |
88 | } | |
89 | ||
78b68556 | 90 | static const struct vm_operations_struct exynos_drm_gem_vm_ops = { |
1c248b7d ID |
91 | .fault = exynos_drm_gem_fault, |
92 | .open = drm_gem_vm_open, | |
93 | .close = drm_gem_vm_close, | |
94 | }; | |
95 | ||
baa70943 | 96 | static const struct drm_ioctl_desc exynos_ioctls[] = { |
1c248b7d | 97 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, |
f8c47144 | 98 | DRM_AUTH | DRM_RENDER_ALLOW), |
6564c65f JS |
99 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl, |
100 | DRM_AUTH | DRM_RENDER_ALLOW), | |
74f230d2 | 101 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl, |
f8c47144 | 102 | DRM_RENDER_ALLOW), |
74f230d2 | 103 | DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl, |
f8c47144 | 104 | DRM_AUTH), |
74f230d2 | 105 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl, |
f8c47144 | 106 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 107 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl, |
f8c47144 | 108 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 109 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl, |
f8c47144 | 110 | DRM_AUTH | DRM_RENDER_ALLOW), |
1c248b7d ID |
111 | }; |
112 | ||
ac2bdf73 JS |
113 | static const struct file_operations exynos_drm_driver_fops = { |
114 | .owner = THIS_MODULE, | |
115 | .open = drm_open, | |
116 | .mmap = exynos_drm_gem_mmap, | |
117 | .poll = drm_poll, | |
118 | .read = drm_read, | |
119 | .unlocked_ioctl = drm_ioctl, | |
804d74ab | 120 | .compat_ioctl = drm_compat_ioctl, |
ac2bdf73 JS |
121 | .release = drm_release, |
122 | }; | |
123 | ||
1c248b7d | 124 | static struct drm_driver exynos_drm_driver = { |
c8c38ccf | 125 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
74f230d2 | 126 | | DRIVER_ATOMIC | DRIVER_RENDER, |
9084f7b8 | 127 | .open = exynos_drm_open, |
d2936153 | 128 | .lastclose = drm_fb_helper_lastclose, |
53ef299f | 129 | .postclose = exynos_drm_postclose, |
201f9b97 | 130 | .gem_free_object_unlocked = exynos_drm_gem_free_object, |
1c248b7d ID |
131 | .gem_vm_ops = &exynos_drm_gem_vm_ops, |
132 | .dumb_create = exynos_drm_gem_dumb_create, | |
b2df26c1 ID |
133 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
134 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
01ed50dd | 135 | .gem_prime_export = drm_gem_prime_export, |
89452d4a | 136 | .gem_prime_import = exynos_drm_gem_prime_import, |
01ed50dd JS |
137 | .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table, |
138 | .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, | |
139 | .gem_prime_vmap = exynos_drm_gem_prime_vmap, | |
140 | .gem_prime_vunmap = exynos_drm_gem_prime_vunmap, | |
5a0202f7 | 141 | .gem_prime_mmap = exynos_drm_gem_prime_mmap, |
1c248b7d | 142 | .ioctls = exynos_ioctls, |
baa70943 | 143 | .num_ioctls = ARRAY_SIZE(exynos_ioctls), |
ac2bdf73 | 144 | .fops = &exynos_drm_driver_fops, |
1c248b7d ID |
145 | .name = DRIVER_NAME, |
146 | .desc = DRIVER_DESC, | |
147 | .date = DRIVER_DATE, | |
148 | .major = DRIVER_MAJOR, | |
149 | .minor = DRIVER_MINOR, | |
150 | }; | |
151 | ||
af65c804 | 152 | #ifdef CONFIG_PM_SLEEP |
082ca313 | 153 | static int exynos_drm_suspend(struct device *dev) |
af65c804 SP |
154 | { |
155 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
0a51897b | 156 | struct exynos_drm_private *private; |
af65c804 | 157 | |
d50a1907 | 158 | if (pm_runtime_suspended(dev) || !drm_dev) |
af65c804 SP |
159 | return 0; |
160 | ||
0a51897b MS |
161 | private = drm_dev->dev_private; |
162 | ||
6e8edf8a MS |
163 | drm_kms_helper_poll_disable(drm_dev); |
164 | exynos_drm_fbdev_suspend(drm_dev); | |
165 | private->suspend_state = drm_atomic_helper_suspend(drm_dev); | |
166 | if (IS_ERR(private->suspend_state)) { | |
167 | exynos_drm_fbdev_resume(drm_dev); | |
168 | drm_kms_helper_poll_enable(drm_dev); | |
169 | return PTR_ERR(private->suspend_state); | |
082ca313 | 170 | } |
082ca313 AH |
171 | |
172 | return 0; | |
af65c804 SP |
173 | } |
174 | ||
082ca313 | 175 | static int exynos_drm_resume(struct device *dev) |
af65c804 SP |
176 | { |
177 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
0a51897b | 178 | struct exynos_drm_private *private; |
af65c804 | 179 | |
d50a1907 | 180 | if (pm_runtime_suspended(dev) || !drm_dev) |
af65c804 SP |
181 | return 0; |
182 | ||
0a51897b | 183 | private = drm_dev->dev_private; |
6e8edf8a MS |
184 | drm_atomic_helper_resume(drm_dev, private->suspend_state); |
185 | exynos_drm_fbdev_resume(drm_dev); | |
186 | drm_kms_helper_poll_enable(drm_dev); | |
082ca313 AH |
187 | |
188 | return 0; | |
af65c804 SP |
189 | } |
190 | #endif | |
191 | ||
af65c804 | 192 | static const struct dev_pm_ops exynos_drm_pm_ops = { |
082ca313 | 193 | SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume) |
af65c804 SP |
194 | }; |
195 | ||
86650408 AH |
196 | /* forward declaration */ |
197 | static struct platform_driver exynos_drm_platform_driver; | |
f37cd5e8 | 198 | |
a5fb26cd MS |
199 | struct exynos_drm_driver_info { |
200 | struct platform_driver *driver; | |
201 | unsigned int flags; | |
202 | }; | |
203 | ||
204 | #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */ | |
205 | #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */ | |
f43c3596 | 206 | #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */ |
a5fb26cd MS |
207 | |
208 | #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL) | |
209 | ||
86650408 AH |
210 | /* |
211 | * Connector drivers should not be placed before associated crtc drivers, | |
212 | * because connector requires pipe number of its crtc during initialization. | |
213 | */ | |
a5fb26cd MS |
214 | static struct exynos_drm_driver_info exynos_drm_drivers[] = { |
215 | { | |
216 | DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD), | |
f43c3596 | 217 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
218 | }, { |
219 | DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON), | |
f43c3596 | 220 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
221 | }, { |
222 | DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON), | |
f43c3596 | 223 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
224 | }, { |
225 | DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER), | |
f43c3596 | 226 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
227 | }, { |
228 | DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC), | |
229 | DRM_COMPONENT_DRIVER | |
230 | }, { | |
231 | DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP), | |
232 | DRM_COMPONENT_DRIVER | |
233 | }, { | |
234 | DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI), | |
235 | DRM_COMPONENT_DRIVER | |
236 | }, { | |
237 | DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI), | |
238 | DRM_COMPONENT_DRIVER | |
239 | }, { | |
240 | DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI), | |
241 | DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE | |
242 | }, { | |
243 | DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D), | |
244 | }, { | |
245 | DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC), | |
246 | }, { | |
247 | DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR), | |
248 | }, { | |
249 | DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), | |
a5fb26cd MS |
250 | }, { |
251 | &exynos_drm_platform_driver, | |
252 | DRM_VIRTUAL_DEVICE | |
253 | } | |
86650408 | 254 | }; |
f37cd5e8 | 255 | |
53c5558d | 256 | static int compare_dev(struct device *dev, void *data) |
f37cd5e8 ID |
257 | { |
258 | return dev == (struct device *)data; | |
259 | } | |
260 | ||
53c5558d | 261 | static struct component_match *exynos_drm_match_add(struct device *dev) |
f37cd5e8 | 262 | { |
53c5558d | 263 | struct component_match *match = NULL; |
86650408 | 264 | int i; |
f37cd5e8 | 265 | |
a5fb26cd MS |
266 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
267 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
86650408 | 268 | struct device *p = NULL, *d; |
f7c2f36f | 269 | |
a5fb26cd MS |
270 | if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER)) |
271 | continue; | |
272 | ||
273 | while ((d = bus_find_device(&platform_bus_type, p, | |
274 | &info->driver->driver, | |
86650408 AH |
275 | (void *)platform_bus_type.match))) { |
276 | put_device(p); | |
277 | component_match_add(dev, &match, compare_dev, d); | |
278 | p = d; | |
df5225bc | 279 | } |
86650408 | 280 | put_device(p); |
f37cd5e8 ID |
281 | } |
282 | ||
86650408 | 283 | return match ?: ERR_PTR(-ENODEV); |
f37cd5e8 ID |
284 | } |
285 | ||
1cd6ae35 ID |
286 | static struct device *exynos_drm_get_dma_device(void) |
287 | { | |
288 | int i; | |
289 | ||
290 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { | |
291 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
292 | struct device *dev; | |
293 | ||
294 | if (!info->driver || !(info->flags & DRM_DMA_DEVICE)) | |
295 | continue; | |
296 | ||
297 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
298 | &info->driver->driver, | |
299 | (void *)platform_bus_type.match))) { | |
300 | put_device(dev); | |
301 | return dev; | |
302 | } | |
303 | } | |
304 | return NULL; | |
305 | } | |
306 | ||
f37cd5e8 ID |
307 | static int exynos_drm_bind(struct device *dev) |
308 | { | |
896bbc3e LP |
309 | struct exynos_drm_private *private; |
310 | struct drm_encoder *encoder; | |
311 | struct drm_device *drm; | |
312 | unsigned int clone_mask; | |
313 | int cnt, ret; | |
314 | ||
315 | drm = drm_dev_alloc(&exynos_drm_driver, dev); | |
316 | if (IS_ERR(drm)) | |
317 | return PTR_ERR(drm); | |
318 | ||
319 | private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); | |
320 | if (!private) { | |
321 | ret = -ENOMEM; | |
322 | goto err_free_drm; | |
323 | } | |
324 | ||
325 | init_waitqueue_head(&private->wait); | |
326 | spin_lock_init(&private->lock); | |
327 | ||
328 | dev_set_drvdata(dev, drm); | |
329 | drm->dev_private = (void *)private; | |
330 | ||
331 | /* the first real CRTC device is used for all dma mapping operations */ | |
332 | private->dma_dev = exynos_drm_get_dma_device(); | |
333 | if (!private->dma_dev) { | |
334 | DRM_ERROR("no device found for DMA mapping operations.\n"); | |
335 | ret = -ENODEV; | |
336 | goto err_free_private; | |
337 | } | |
338 | DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n", | |
339 | dev_name(private->dma_dev)); | |
340 | ||
341 | /* create common IOMMU mapping for all devices attached to Exynos DRM */ | |
342 | ret = drm_create_iommu_mapping(drm); | |
343 | if (ret < 0) { | |
344 | DRM_ERROR("failed to create iommu mapping.\n"); | |
345 | goto err_free_private; | |
346 | } | |
347 | ||
348 | drm_mode_config_init(drm); | |
349 | ||
350 | exynos_drm_mode_config_init(drm); | |
351 | ||
352 | /* setup possible_clones. */ | |
353 | cnt = 0; | |
354 | clone_mask = 0; | |
355 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
356 | clone_mask |= (1 << (cnt++)); | |
357 | ||
358 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
359 | encoder->possible_clones = clone_mask; | |
360 | ||
361 | /* Try to bind all sub drivers. */ | |
362 | ret = component_bind_all(drm->dev, drm); | |
363 | if (ret) | |
364 | goto err_mode_config_cleanup; | |
365 | ||
366 | ret = drm_vblank_init(drm, drm->mode_config.num_crtc); | |
367 | if (ret) | |
368 | goto err_unbind_all; | |
369 | ||
370 | /* Probe non kms sub drivers and virtual display driver. */ | |
371 | ret = exynos_drm_device_subdrv_probe(drm); | |
372 | if (ret) | |
991dca01 | 373 | goto err_unbind_all; |
896bbc3e LP |
374 | |
375 | drm_mode_config_reset(drm); | |
376 | ||
377 | /* | |
378 | * enable drm irq mode. | |
379 | * - with irq_enabled = true, we can use the vblank feature. | |
380 | * | |
381 | * P.S. note that we wouldn't use drm irq handler but | |
382 | * just specific driver own one instead because | |
383 | * drm framework supports only one irq handler. | |
384 | */ | |
385 | drm->irq_enabled = true; | |
386 | ||
387 | /* init kms poll for handling hpd */ | |
388 | drm_kms_helper_poll_init(drm); | |
389 | ||
812fc6f2 TR |
390 | ret = exynos_drm_fbdev_init(drm); |
391 | if (ret) | |
392 | goto err_cleanup_poll; | |
896bbc3e LP |
393 | |
394 | /* register the DRM device */ | |
395 | ret = drm_dev_register(drm, 0); | |
396 | if (ret < 0) | |
397 | goto err_cleanup_fbdev; | |
398 | ||
399 | return 0; | |
400 | ||
401 | err_cleanup_fbdev: | |
402 | exynos_drm_fbdev_fini(drm); | |
812fc6f2 | 403 | err_cleanup_poll: |
896bbc3e LP |
404 | drm_kms_helper_poll_fini(drm); |
405 | exynos_drm_device_subdrv_remove(drm); | |
896bbc3e LP |
406 | err_unbind_all: |
407 | component_unbind_all(drm->dev, drm); | |
408 | err_mode_config_cleanup: | |
409 | drm_mode_config_cleanup(drm); | |
410 | drm_release_iommu_mapping(drm); | |
411 | err_free_private: | |
412 | kfree(private); | |
413 | err_free_drm: | |
414 | drm_dev_unref(drm); | |
415 | ||
416 | return ret; | |
f37cd5e8 ID |
417 | } |
418 | ||
419 | static void exynos_drm_unbind(struct device *dev) | |
420 | { | |
896bbc3e LP |
421 | struct drm_device *drm = dev_get_drvdata(dev); |
422 | ||
423 | drm_dev_unregister(drm); | |
424 | ||
425 | exynos_drm_device_subdrv_remove(drm); | |
426 | ||
427 | exynos_drm_fbdev_fini(drm); | |
428 | drm_kms_helper_poll_fini(drm); | |
429 | ||
430 | component_unbind_all(drm->dev, drm); | |
431 | drm_mode_config_cleanup(drm); | |
432 | drm_release_iommu_mapping(drm); | |
433 | ||
434 | kfree(drm->dev_private); | |
435 | drm->dev_private = NULL; | |
238604ca | 436 | dev_set_drvdata(dev, NULL); |
896bbc3e LP |
437 | |
438 | drm_dev_unref(drm); | |
f37cd5e8 ID |
439 | } |
440 | ||
441 | static const struct component_master_ops exynos_drm_ops = { | |
f37cd5e8 ID |
442 | .bind = exynos_drm_bind, |
443 | .unbind = exynos_drm_unbind, | |
1c248b7d ID |
444 | }; |
445 | ||
417133e4 AH |
446 | static int exynos_drm_platform_probe(struct platform_device *pdev) |
447 | { | |
448 | struct component_match *match; | |
449 | ||
450 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
417133e4 AH |
451 | |
452 | match = exynos_drm_match_add(&pdev->dev); | |
453 | if (IS_ERR(match)) | |
454 | return PTR_ERR(match); | |
455 | ||
456 | return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, | |
457 | match); | |
458 | } | |
459 | ||
460 | static int exynos_drm_platform_remove(struct platform_device *pdev) | |
461 | { | |
462 | component_master_del(&pdev->dev, &exynos_drm_ops); | |
463 | return 0; | |
464 | } | |
465 | ||
466 | static struct platform_driver exynos_drm_platform_driver = { | |
467 | .probe = exynos_drm_platform_probe, | |
468 | .remove = exynos_drm_platform_remove, | |
469 | .driver = { | |
470 | .name = "exynos-drm", | |
471 | .pm = &exynos_drm_pm_ops, | |
472 | }, | |
473 | }; | |
474 | ||
417133e4 | 475 | static void exynos_drm_unregister_devices(void) |
72390677 | 476 | { |
a5fb26cd MS |
477 | int i; |
478 | ||
479 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { | |
480 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
481 | struct device *dev; | |
25928a39 | 482 | |
a5fb26cd MS |
483 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
484 | continue; | |
485 | ||
486 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
487 | &info->driver->driver, | |
488 | (void *)platform_bus_type.match))) { | |
489 | put_device(dev); | |
490 | platform_device_unregister(to_platform_device(dev)); | |
491 | } | |
417133e4 AH |
492 | } |
493 | } | |
7eb8f069 | 494 | |
417133e4 AH |
495 | static int exynos_drm_register_devices(void) |
496 | { | |
a5fb26cd | 497 | struct platform_device *pdev; |
417133e4 AH |
498 | int i; |
499 | ||
a5fb26cd MS |
500 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
501 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 502 | |
a5fb26cd | 503 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
417133e4 | 504 | continue; |
417133e4 | 505 | |
a5fb26cd MS |
506 | pdev = platform_device_register_simple( |
507 | info->driver->driver.name, -1, NULL, 0); | |
508 | if (IS_ERR(pdev)) | |
509 | goto fail; | |
72390677 | 510 | } |
f37cd5e8 | 511 | |
417133e4 | 512 | return 0; |
a5fb26cd MS |
513 | fail: |
514 | exynos_drm_unregister_devices(); | |
515 | return PTR_ERR(pdev); | |
1c248b7d ID |
516 | } |
517 | ||
a5fb26cd | 518 | static void exynos_drm_unregister_drivers(void) |
1c248b7d | 519 | { |
a5fb26cd | 520 | int i; |
417133e4 | 521 | |
a5fb26cd MS |
522 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { |
523 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 524 | |
a5fb26cd | 525 | if (!info->driver) |
417133e4 AH |
526 | continue; |
527 | ||
a5fb26cd | 528 | platform_driver_unregister(info->driver); |
417133e4 | 529 | } |
f37cd5e8 ID |
530 | } |
531 | ||
a5fb26cd | 532 | static int exynos_drm_register_drivers(void) |
417133e4 | 533 | { |
a5fb26cd | 534 | int i, ret; |
417133e4 | 535 | |
a5fb26cd MS |
536 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
537 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 538 | |
a5fb26cd MS |
539 | if (!info->driver) |
540 | continue; | |
417133e4 | 541 | |
a5fb26cd MS |
542 | ret = platform_driver_register(info->driver); |
543 | if (ret) | |
544 | goto fail; | |
545 | } | |
546 | return 0; | |
547 | fail: | |
548 | exynos_drm_unregister_drivers(); | |
549 | return ret; | |
417133e4 AH |
550 | } |
551 | ||
f37cd5e8 ID |
552 | static int exynos_drm_init(void) |
553 | { | |
e3b9e460 | 554 | int ret; |
f37cd5e8 | 555 | |
417133e4 AH |
556 | ret = exynos_drm_register_devices(); |
557 | if (ret) | |
558 | return ret; | |
820687be | 559 | |
a5fb26cd | 560 | ret = exynos_drm_register_drivers(); |
417133e4 AH |
561 | if (ret) |
562 | goto err_unregister_pdevs; | |
f37cd5e8 | 563 | |
f37cd5e8 ID |
564 | return 0; |
565 | ||
417133e4 AH |
566 | err_unregister_pdevs: |
567 | exynos_drm_unregister_devices(); | |
f37cd5e8 ID |
568 | |
569 | return ret; | |
570 | } | |
571 | ||
572 | static void exynos_drm_exit(void) | |
573 | { | |
a5fb26cd | 574 | exynos_drm_unregister_drivers(); |
417133e4 | 575 | exynos_drm_unregister_devices(); |
1c248b7d ID |
576 | } |
577 | ||
578 | module_init(exynos_drm_init); | |
579 | module_exit(exynos_drm_exit); | |
580 | ||
581 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); | |
582 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
583 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
584 | MODULE_DESCRIPTION("Samsung SoC DRM Driver"); | |
585 | MODULE_LICENSE("GPL"); |