Commit | Line | Data |
---|---|---|
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> |
1c248b7d | 19 | |
f37cd5e8 | 20 | #include <linux/component.h> |
96f54215 | 21 | |
1c248b7d ID |
22 | #include <drm/exynos_drm.h> |
23 | ||
24 | #include "exynos_drm_drv.h" | |
1c248b7d ID |
25 | #include "exynos_drm_fbdev.h" |
26 | #include "exynos_drm_fb.h" | |
27 | #include "exynos_drm_gem.h" | |
864ee9e6 | 28 | #include "exynos_drm_plane.h" |
b73d1230 | 29 | #include "exynos_drm_vidi.h" |
d7f1642c | 30 | #include "exynos_drm_g2d.h" |
cb471f14 | 31 | #include "exynos_drm_ipp.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 | ||
f43c3596 MS |
40 | static struct device *exynos_drm_get_dma_device(void); |
41 | ||
38d868e4 VS |
42 | int exynos_atomic_check(struct drm_device *dev, |
43 | struct drm_atomic_state *state) | |
44 | { | |
45 | int ret; | |
46 | ||
47 | ret = drm_atomic_helper_check_modeset(dev, state); | |
48 | if (ret) | |
49 | return ret; | |
50 | ||
51 | ret = drm_atomic_normalize_zpos(dev, state); | |
52 | if (ret) | |
53 | return ret; | |
54 | ||
55 | ret = drm_atomic_helper_check_planes(dev, state); | |
56 | if (ret) | |
57 | return ret; | |
58 | ||
59 | return ret; | |
60 | } | |
61 | ||
9084f7b8 JS |
62 | static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) |
63 | { | |
d7f1642c | 64 | struct drm_exynos_file_private *file_priv; |
ba3706c0 | 65 | int ret; |
d7f1642c | 66 | |
d7f1642c JS |
67 | file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); |
68 | if (!file_priv) | |
69 | return -ENOMEM; | |
70 | ||
d7f1642c | 71 | file->driver_priv = file_priv; |
b2df26c1 | 72 | |
ba3706c0 | 73 | ret = exynos_drm_subdrv_open(dev, file); |
6ca605f7 | 74 | if (ret) |
307ceaff | 75 | goto err_file_priv_free; |
ba3706c0 | 76 | |
6ca605f7 | 77 | return ret; |
307ceaff | 78 | |
307ceaff | 79 | err_file_priv_free: |
6ca605f7 SK |
80 | kfree(file_priv); |
81 | file->driver_priv = NULL; | |
ba3706c0 | 82 | return ret; |
9084f7b8 JS |
83 | } |
84 | ||
0cbc330e | 85 | static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) |
ccf4d883 | 86 | { |
b13b4d1b | 87 | exynos_drm_subdrv_close(dev, file); |
53ef299f ID |
88 | kfree(file->driver_priv); |
89 | file->driver_priv = NULL; | |
90 | } | |
91 | ||
1c248b7d ID |
92 | static void exynos_drm_lastclose(struct drm_device *dev) |
93 | { | |
1c248b7d ID |
94 | exynos_drm_fbdev_restore_mode(dev); |
95 | } | |
96 | ||
78b68556 | 97 | static const struct vm_operations_struct exynos_drm_gem_vm_ops = { |
1c248b7d ID |
98 | .fault = exynos_drm_gem_fault, |
99 | .open = drm_gem_vm_open, | |
100 | .close = drm_gem_vm_close, | |
101 | }; | |
102 | ||
baa70943 | 103 | static const struct drm_ioctl_desc exynos_ioctls[] = { |
1c248b7d | 104 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, |
f8c47144 | 105 | DRM_AUTH | DRM_RENDER_ALLOW), |
6564c65f JS |
106 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl, |
107 | DRM_AUTH | DRM_RENDER_ALLOW), | |
74f230d2 | 108 | DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl, |
f8c47144 | 109 | DRM_RENDER_ALLOW), |
74f230d2 | 110 | DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl, |
f8c47144 | 111 | DRM_AUTH), |
74f230d2 | 112 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl, |
f8c47144 | 113 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 114 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl, |
f8c47144 | 115 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 116 | DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl, |
f8c47144 | 117 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 118 | DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property, |
f8c47144 | 119 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 120 | DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property, |
f8c47144 | 121 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 122 | DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf, |
f8c47144 | 123 | DRM_AUTH | DRM_RENDER_ALLOW), |
74f230d2 | 124 | DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl, |
f8c47144 | 125 | DRM_AUTH | DRM_RENDER_ALLOW), |
1c248b7d ID |
126 | }; |
127 | ||
ac2bdf73 JS |
128 | static const struct file_operations exynos_drm_driver_fops = { |
129 | .owner = THIS_MODULE, | |
130 | .open = drm_open, | |
131 | .mmap = exynos_drm_gem_mmap, | |
132 | .poll = drm_poll, | |
133 | .read = drm_read, | |
134 | .unlocked_ioctl = drm_ioctl, | |
804d74ab | 135 | .compat_ioctl = drm_compat_ioctl, |
ac2bdf73 JS |
136 | .release = drm_release, |
137 | }; | |
138 | ||
1c248b7d | 139 | static struct drm_driver exynos_drm_driver = { |
c8c38ccf | 140 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
74f230d2 | 141 | | DRIVER_ATOMIC | DRIVER_RENDER, |
9084f7b8 | 142 | .open = exynos_drm_open, |
1c248b7d | 143 | .lastclose = exynos_drm_lastclose, |
53ef299f | 144 | .postclose = exynos_drm_postclose, |
201f9b97 | 145 | .gem_free_object_unlocked = exynos_drm_gem_free_object, |
1c248b7d ID |
146 | .gem_vm_ops = &exynos_drm_gem_vm_ops, |
147 | .dumb_create = exynos_drm_gem_dumb_create, | |
b2df26c1 ID |
148 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
149 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
01ed50dd JS |
150 | .gem_prime_export = drm_gem_prime_export, |
151 | .gem_prime_import = drm_gem_prime_import, | |
152 | .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table, | |
153 | .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, | |
154 | .gem_prime_vmap = exynos_drm_gem_prime_vmap, | |
155 | .gem_prime_vunmap = exynos_drm_gem_prime_vunmap, | |
5a0202f7 | 156 | .gem_prime_mmap = exynos_drm_gem_prime_mmap, |
1c248b7d | 157 | .ioctls = exynos_ioctls, |
baa70943 | 158 | .num_ioctls = ARRAY_SIZE(exynos_ioctls), |
ac2bdf73 | 159 | .fops = &exynos_drm_driver_fops, |
1c248b7d ID |
160 | .name = DRIVER_NAME, |
161 | .desc = DRIVER_DESC, | |
162 | .date = DRIVER_DATE, | |
163 | .major = DRIVER_MAJOR, | |
164 | .minor = DRIVER_MINOR, | |
165 | }; | |
166 | ||
af65c804 | 167 | #ifdef CONFIG_PM_SLEEP |
082ca313 | 168 | static int exynos_drm_suspend(struct device *dev) |
af65c804 SP |
169 | { |
170 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
6e8edf8a | 171 | struct exynos_drm_private *private = drm_dev->dev_private; |
af65c804 | 172 | |
d50a1907 | 173 | if (pm_runtime_suspended(dev) || !drm_dev) |
af65c804 SP |
174 | return 0; |
175 | ||
6e8edf8a MS |
176 | drm_kms_helper_poll_disable(drm_dev); |
177 | exynos_drm_fbdev_suspend(drm_dev); | |
178 | private->suspend_state = drm_atomic_helper_suspend(drm_dev); | |
179 | if (IS_ERR(private->suspend_state)) { | |
180 | exynos_drm_fbdev_resume(drm_dev); | |
181 | drm_kms_helper_poll_enable(drm_dev); | |
182 | return PTR_ERR(private->suspend_state); | |
082ca313 | 183 | } |
082ca313 AH |
184 | |
185 | return 0; | |
af65c804 SP |
186 | } |
187 | ||
082ca313 | 188 | static int exynos_drm_resume(struct device *dev) |
af65c804 SP |
189 | { |
190 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
6e8edf8a | 191 | struct exynos_drm_private *private = drm_dev->dev_private; |
af65c804 | 192 | |
d50a1907 | 193 | if (pm_runtime_suspended(dev) || !drm_dev) |
af65c804 SP |
194 | return 0; |
195 | ||
6e8edf8a MS |
196 | drm_atomic_helper_resume(drm_dev, private->suspend_state); |
197 | exynos_drm_fbdev_resume(drm_dev); | |
198 | drm_kms_helper_poll_enable(drm_dev); | |
082ca313 AH |
199 | |
200 | return 0; | |
af65c804 SP |
201 | } |
202 | #endif | |
203 | ||
af65c804 | 204 | static const struct dev_pm_ops exynos_drm_pm_ops = { |
082ca313 | 205 | SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume) |
af65c804 SP |
206 | }; |
207 | ||
86650408 AH |
208 | /* forward declaration */ |
209 | static struct platform_driver exynos_drm_platform_driver; | |
f37cd5e8 | 210 | |
a5fb26cd MS |
211 | struct exynos_drm_driver_info { |
212 | struct platform_driver *driver; | |
213 | unsigned int flags; | |
214 | }; | |
215 | ||
216 | #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */ | |
217 | #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */ | |
f43c3596 | 218 | #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */ |
a5fb26cd MS |
219 | |
220 | #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL) | |
221 | ||
86650408 AH |
222 | /* |
223 | * Connector drivers should not be placed before associated crtc drivers, | |
224 | * because connector requires pipe number of its crtc during initialization. | |
225 | */ | |
a5fb26cd MS |
226 | static struct exynos_drm_driver_info exynos_drm_drivers[] = { |
227 | { | |
228 | DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD), | |
f43c3596 | 229 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
230 | }, { |
231 | DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON), | |
f43c3596 | 232 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
233 | }, { |
234 | DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON), | |
f43c3596 | 235 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
236 | }, { |
237 | DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER), | |
f43c3596 | 238 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
239 | }, { |
240 | DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC), | |
241 | DRM_COMPONENT_DRIVER | |
242 | }, { | |
243 | DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP), | |
244 | DRM_COMPONENT_DRIVER | |
245 | }, { | |
246 | DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI), | |
247 | DRM_COMPONENT_DRIVER | |
248 | }, { | |
249 | DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI), | |
250 | DRM_COMPONENT_DRIVER | |
251 | }, { | |
252 | DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI), | |
253 | DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE | |
254 | }, { | |
255 | DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D), | |
256 | }, { | |
257 | DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC), | |
258 | }, { | |
259 | DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR), | |
260 | }, { | |
261 | DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), | |
262 | }, { | |
263 | DRV_PTR(ipp_driver, CONFIG_DRM_EXYNOS_IPP), | |
264 | DRM_VIRTUAL_DEVICE | |
265 | }, { | |
266 | &exynos_drm_platform_driver, | |
267 | DRM_VIRTUAL_DEVICE | |
268 | } | |
86650408 | 269 | }; |
f37cd5e8 | 270 | |
53c5558d | 271 | static int compare_dev(struct device *dev, void *data) |
f37cd5e8 ID |
272 | { |
273 | return dev == (struct device *)data; | |
274 | } | |
275 | ||
53c5558d | 276 | static struct component_match *exynos_drm_match_add(struct device *dev) |
f37cd5e8 | 277 | { |
53c5558d | 278 | struct component_match *match = NULL; |
86650408 | 279 | int i; |
f37cd5e8 | 280 | |
a5fb26cd MS |
281 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
282 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
86650408 | 283 | struct device *p = NULL, *d; |
f7c2f36f | 284 | |
a5fb26cd MS |
285 | if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER)) |
286 | continue; | |
287 | ||
288 | while ((d = bus_find_device(&platform_bus_type, p, | |
289 | &info->driver->driver, | |
86650408 AH |
290 | (void *)platform_bus_type.match))) { |
291 | put_device(p); | |
292 | component_match_add(dev, &match, compare_dev, d); | |
293 | p = d; | |
df5225bc | 294 | } |
86650408 | 295 | put_device(p); |
f37cd5e8 ID |
296 | } |
297 | ||
86650408 | 298 | return match ?: ERR_PTR(-ENODEV); |
f37cd5e8 ID |
299 | } |
300 | ||
301 | static int exynos_drm_bind(struct device *dev) | |
302 | { | |
896bbc3e LP |
303 | struct exynos_drm_private *private; |
304 | struct drm_encoder *encoder; | |
305 | struct drm_device *drm; | |
306 | unsigned int clone_mask; | |
307 | int cnt, ret; | |
308 | ||
309 | drm = drm_dev_alloc(&exynos_drm_driver, dev); | |
310 | if (IS_ERR(drm)) | |
311 | return PTR_ERR(drm); | |
312 | ||
313 | private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); | |
314 | if (!private) { | |
315 | ret = -ENOMEM; | |
316 | goto err_free_drm; | |
317 | } | |
318 | ||
319 | init_waitqueue_head(&private->wait); | |
320 | spin_lock_init(&private->lock); | |
321 | ||
322 | dev_set_drvdata(dev, drm); | |
323 | drm->dev_private = (void *)private; | |
324 | ||
325 | /* the first real CRTC device is used for all dma mapping operations */ | |
326 | private->dma_dev = exynos_drm_get_dma_device(); | |
327 | if (!private->dma_dev) { | |
328 | DRM_ERROR("no device found for DMA mapping operations.\n"); | |
329 | ret = -ENODEV; | |
330 | goto err_free_private; | |
331 | } | |
332 | DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n", | |
333 | dev_name(private->dma_dev)); | |
334 | ||
335 | /* create common IOMMU mapping for all devices attached to Exynos DRM */ | |
336 | ret = drm_create_iommu_mapping(drm); | |
337 | if (ret < 0) { | |
338 | DRM_ERROR("failed to create iommu mapping.\n"); | |
339 | goto err_free_private; | |
340 | } | |
341 | ||
342 | drm_mode_config_init(drm); | |
343 | ||
344 | exynos_drm_mode_config_init(drm); | |
345 | ||
346 | /* setup possible_clones. */ | |
347 | cnt = 0; | |
348 | clone_mask = 0; | |
349 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
350 | clone_mask |= (1 << (cnt++)); | |
351 | ||
352 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
353 | encoder->possible_clones = clone_mask; | |
354 | ||
355 | /* Try to bind all sub drivers. */ | |
356 | ret = component_bind_all(drm->dev, drm); | |
357 | if (ret) | |
358 | goto err_mode_config_cleanup; | |
359 | ||
360 | ret = drm_vblank_init(drm, drm->mode_config.num_crtc); | |
361 | if (ret) | |
362 | goto err_unbind_all; | |
363 | ||
364 | /* Probe non kms sub drivers and virtual display driver. */ | |
365 | ret = exynos_drm_device_subdrv_probe(drm); | |
366 | if (ret) | |
991dca01 | 367 | goto err_unbind_all; |
896bbc3e LP |
368 | |
369 | drm_mode_config_reset(drm); | |
370 | ||
371 | /* | |
372 | * enable drm irq mode. | |
373 | * - with irq_enabled = true, we can use the vblank feature. | |
374 | * | |
375 | * P.S. note that we wouldn't use drm irq handler but | |
376 | * just specific driver own one instead because | |
377 | * drm framework supports only one irq handler. | |
378 | */ | |
379 | drm->irq_enabled = true; | |
380 | ||
381 | /* init kms poll for handling hpd */ | |
382 | drm_kms_helper_poll_init(drm); | |
383 | ||
812fc6f2 TR |
384 | ret = exynos_drm_fbdev_init(drm); |
385 | if (ret) | |
386 | goto err_cleanup_poll; | |
896bbc3e LP |
387 | |
388 | /* register the DRM device */ | |
389 | ret = drm_dev_register(drm, 0); | |
390 | if (ret < 0) | |
391 | goto err_cleanup_fbdev; | |
392 | ||
393 | return 0; | |
394 | ||
395 | err_cleanup_fbdev: | |
396 | exynos_drm_fbdev_fini(drm); | |
812fc6f2 | 397 | err_cleanup_poll: |
896bbc3e LP |
398 | drm_kms_helper_poll_fini(drm); |
399 | exynos_drm_device_subdrv_remove(drm); | |
896bbc3e LP |
400 | err_unbind_all: |
401 | component_unbind_all(drm->dev, drm); | |
402 | err_mode_config_cleanup: | |
403 | drm_mode_config_cleanup(drm); | |
404 | drm_release_iommu_mapping(drm); | |
405 | err_free_private: | |
406 | kfree(private); | |
407 | err_free_drm: | |
408 | drm_dev_unref(drm); | |
409 | ||
410 | return ret; | |
f37cd5e8 ID |
411 | } |
412 | ||
413 | static void exynos_drm_unbind(struct device *dev) | |
414 | { | |
896bbc3e LP |
415 | struct drm_device *drm = dev_get_drvdata(dev); |
416 | ||
417 | drm_dev_unregister(drm); | |
418 | ||
419 | exynos_drm_device_subdrv_remove(drm); | |
420 | ||
421 | exynos_drm_fbdev_fini(drm); | |
422 | drm_kms_helper_poll_fini(drm); | |
423 | ||
424 | component_unbind_all(drm->dev, drm); | |
425 | drm_mode_config_cleanup(drm); | |
426 | drm_release_iommu_mapping(drm); | |
427 | ||
428 | kfree(drm->dev_private); | |
429 | drm->dev_private = NULL; | |
430 | ||
431 | drm_dev_unref(drm); | |
f37cd5e8 ID |
432 | } |
433 | ||
434 | static const struct component_master_ops exynos_drm_ops = { | |
f37cd5e8 ID |
435 | .bind = exynos_drm_bind, |
436 | .unbind = exynos_drm_unbind, | |
1c248b7d ID |
437 | }; |
438 | ||
417133e4 AH |
439 | static int exynos_drm_platform_probe(struct platform_device *pdev) |
440 | { | |
441 | struct component_match *match; | |
442 | ||
443 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
417133e4 AH |
444 | |
445 | match = exynos_drm_match_add(&pdev->dev); | |
446 | if (IS_ERR(match)) | |
447 | return PTR_ERR(match); | |
448 | ||
449 | return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, | |
450 | match); | |
451 | } | |
452 | ||
453 | static int exynos_drm_platform_remove(struct platform_device *pdev) | |
454 | { | |
455 | component_master_del(&pdev->dev, &exynos_drm_ops); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static struct platform_driver exynos_drm_platform_driver = { | |
460 | .probe = exynos_drm_platform_probe, | |
461 | .remove = exynos_drm_platform_remove, | |
462 | .driver = { | |
463 | .name = "exynos-drm", | |
464 | .pm = &exynos_drm_pm_ops, | |
465 | }, | |
466 | }; | |
467 | ||
f43c3596 MS |
468 | static struct device *exynos_drm_get_dma_device(void) |
469 | { | |
470 | int i; | |
471 | ||
472 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { | |
473 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
474 | struct device *dev; | |
475 | ||
476 | if (!info->driver || !(info->flags & DRM_DMA_DEVICE)) | |
477 | continue; | |
478 | ||
479 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
480 | &info->driver->driver, | |
481 | (void *)platform_bus_type.match))) { | |
482 | put_device(dev); | |
483 | return dev; | |
484 | } | |
485 | } | |
486 | return NULL; | |
487 | } | |
488 | ||
417133e4 | 489 | static void exynos_drm_unregister_devices(void) |
72390677 | 490 | { |
a5fb26cd MS |
491 | int i; |
492 | ||
493 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { | |
494 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
495 | struct device *dev; | |
25928a39 | 496 | |
a5fb26cd MS |
497 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
498 | continue; | |
499 | ||
500 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
501 | &info->driver->driver, | |
502 | (void *)platform_bus_type.match))) { | |
503 | put_device(dev); | |
504 | platform_device_unregister(to_platform_device(dev)); | |
505 | } | |
417133e4 AH |
506 | } |
507 | } | |
7eb8f069 | 508 | |
417133e4 AH |
509 | static int exynos_drm_register_devices(void) |
510 | { | |
a5fb26cd | 511 | struct platform_device *pdev; |
417133e4 AH |
512 | int i; |
513 | ||
a5fb26cd MS |
514 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
515 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 516 | |
a5fb26cd | 517 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
417133e4 | 518 | continue; |
417133e4 | 519 | |
a5fb26cd MS |
520 | pdev = platform_device_register_simple( |
521 | info->driver->driver.name, -1, NULL, 0); | |
522 | if (IS_ERR(pdev)) | |
523 | goto fail; | |
72390677 | 524 | } |
f37cd5e8 | 525 | |
417133e4 | 526 | return 0; |
a5fb26cd MS |
527 | fail: |
528 | exynos_drm_unregister_devices(); | |
529 | return PTR_ERR(pdev); | |
1c248b7d ID |
530 | } |
531 | ||
a5fb26cd | 532 | static void exynos_drm_unregister_drivers(void) |
1c248b7d | 533 | { |
a5fb26cd | 534 | int i; |
417133e4 | 535 | |
a5fb26cd MS |
536 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { |
537 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 538 | |
a5fb26cd | 539 | if (!info->driver) |
417133e4 AH |
540 | continue; |
541 | ||
a5fb26cd | 542 | platform_driver_unregister(info->driver); |
417133e4 | 543 | } |
f37cd5e8 ID |
544 | } |
545 | ||
a5fb26cd | 546 | static int exynos_drm_register_drivers(void) |
417133e4 | 547 | { |
a5fb26cd | 548 | int i, ret; |
417133e4 | 549 | |
a5fb26cd MS |
550 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
551 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 552 | |
a5fb26cd MS |
553 | if (!info->driver) |
554 | continue; | |
417133e4 | 555 | |
a5fb26cd MS |
556 | ret = platform_driver_register(info->driver); |
557 | if (ret) | |
558 | goto fail; | |
559 | } | |
560 | return 0; | |
561 | fail: | |
562 | exynos_drm_unregister_drivers(); | |
563 | return ret; | |
417133e4 AH |
564 | } |
565 | ||
f37cd5e8 ID |
566 | static int exynos_drm_init(void) |
567 | { | |
e3b9e460 | 568 | int ret; |
f37cd5e8 | 569 | |
417133e4 AH |
570 | ret = exynos_drm_register_devices(); |
571 | if (ret) | |
572 | return ret; | |
820687be | 573 | |
a5fb26cd | 574 | ret = exynos_drm_register_drivers(); |
417133e4 AH |
575 | if (ret) |
576 | goto err_unregister_pdevs; | |
f37cd5e8 | 577 | |
f37cd5e8 ID |
578 | return 0; |
579 | ||
417133e4 AH |
580 | err_unregister_pdevs: |
581 | exynos_drm_unregister_devices(); | |
f37cd5e8 ID |
582 | |
583 | return ret; | |
584 | } | |
585 | ||
586 | static void exynos_drm_exit(void) | |
587 | { | |
a5fb26cd | 588 | exynos_drm_unregister_drivers(); |
417133e4 | 589 | exynos_drm_unregister_devices(); |
1c248b7d ID |
590 | } |
591 | ||
592 | module_init(exynos_drm_init); | |
593 | module_exit(exynos_drm_exit); | |
594 | ||
595 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); | |
596 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
597 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
598 | MODULE_DESCRIPTION("Samsung SoC DRM Driver"); | |
599 | MODULE_LICENSE("GPL"); |