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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> |
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 | { |
4013ef48 | 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, | |
148 | .dumb_map_offset = exynos_drm_gem_dumb_map_offset, | |
43387b37 | 149 | .dumb_destroy = drm_gem_dumb_destroy, |
b2df26c1 ID |
150 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
151 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
01ed50dd JS |
152 | .gem_prime_export = drm_gem_prime_export, |
153 | .gem_prime_import = drm_gem_prime_import, | |
154 | .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table, | |
155 | .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, | |
156 | .gem_prime_vmap = exynos_drm_gem_prime_vmap, | |
157 | .gem_prime_vunmap = exynos_drm_gem_prime_vunmap, | |
5a0202f7 | 158 | .gem_prime_mmap = exynos_drm_gem_prime_mmap, |
1c248b7d | 159 | .ioctls = exynos_ioctls, |
baa70943 | 160 | .num_ioctls = ARRAY_SIZE(exynos_ioctls), |
ac2bdf73 | 161 | .fops = &exynos_drm_driver_fops, |
1c248b7d ID |
162 | .name = DRIVER_NAME, |
163 | .desc = DRIVER_DESC, | |
164 | .date = DRIVER_DATE, | |
165 | .major = DRIVER_MAJOR, | |
166 | .minor = DRIVER_MINOR, | |
167 | }; | |
168 | ||
af65c804 | 169 | #ifdef CONFIG_PM_SLEEP |
082ca313 | 170 | static int exynos_drm_suspend(struct device *dev) |
af65c804 SP |
171 | { |
172 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
082ca313 | 173 | struct drm_connector *connector; |
af65c804 | 174 | |
d50a1907 | 175 | if (pm_runtime_suspended(dev) || !drm_dev) |
af65c804 SP |
176 | return 0; |
177 | ||
082ca313 AH |
178 | drm_modeset_lock_all(drm_dev); |
179 | drm_for_each_connector(connector, drm_dev) { | |
180 | int old_dpms = connector->dpms; | |
181 | ||
182 | if (connector->funcs->dpms) | |
183 | connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); | |
184 | ||
185 | /* Set the old mode back to the connector for resume */ | |
186 | connector->dpms = old_dpms; | |
187 | } | |
188 | drm_modeset_unlock_all(drm_dev); | |
189 | ||
190 | return 0; | |
af65c804 SP |
191 | } |
192 | ||
082ca313 | 193 | static int exynos_drm_resume(struct device *dev) |
af65c804 SP |
194 | { |
195 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
082ca313 | 196 | struct drm_connector *connector; |
af65c804 | 197 | |
d50a1907 | 198 | if (pm_runtime_suspended(dev) || !drm_dev) |
af65c804 SP |
199 | return 0; |
200 | ||
082ca313 AH |
201 | drm_modeset_lock_all(drm_dev); |
202 | drm_for_each_connector(connector, drm_dev) { | |
203 | if (connector->funcs->dpms) { | |
204 | int dpms = connector->dpms; | |
205 | ||
206 | connector->dpms = DRM_MODE_DPMS_OFF; | |
207 | connector->funcs->dpms(connector, dpms); | |
208 | } | |
209 | } | |
210 | drm_modeset_unlock_all(drm_dev); | |
211 | ||
212 | return 0; | |
af65c804 SP |
213 | } |
214 | #endif | |
215 | ||
af65c804 | 216 | static const struct dev_pm_ops exynos_drm_pm_ops = { |
082ca313 | 217 | SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume) |
af65c804 SP |
218 | }; |
219 | ||
86650408 AH |
220 | /* forward declaration */ |
221 | static struct platform_driver exynos_drm_platform_driver; | |
f37cd5e8 | 222 | |
a5fb26cd MS |
223 | struct exynos_drm_driver_info { |
224 | struct platform_driver *driver; | |
225 | unsigned int flags; | |
226 | }; | |
227 | ||
228 | #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */ | |
229 | #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */ | |
f43c3596 | 230 | #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */ |
a5fb26cd MS |
231 | |
232 | #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL) | |
233 | ||
86650408 AH |
234 | /* |
235 | * Connector drivers should not be placed before associated crtc drivers, | |
236 | * because connector requires pipe number of its crtc during initialization. | |
237 | */ | |
a5fb26cd MS |
238 | static struct exynos_drm_driver_info exynos_drm_drivers[] = { |
239 | { | |
240 | DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD), | |
f43c3596 | 241 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
242 | }, { |
243 | DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON), | |
f43c3596 | 244 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
245 | }, { |
246 | DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON), | |
f43c3596 | 247 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
248 | }, { |
249 | DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER), | |
f43c3596 | 250 | DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE |
a5fb26cd MS |
251 | }, { |
252 | DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC), | |
253 | DRM_COMPONENT_DRIVER | |
254 | }, { | |
255 | DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP), | |
256 | DRM_COMPONENT_DRIVER | |
257 | }, { | |
258 | DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI), | |
259 | DRM_COMPONENT_DRIVER | |
260 | }, { | |
261 | DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI), | |
262 | DRM_COMPONENT_DRIVER | |
263 | }, { | |
264 | DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI), | |
265 | DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE | |
266 | }, { | |
267 | DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D), | |
268 | }, { | |
269 | DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC), | |
270 | }, { | |
271 | DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR), | |
272 | }, { | |
273 | DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), | |
274 | }, { | |
275 | DRV_PTR(ipp_driver, CONFIG_DRM_EXYNOS_IPP), | |
276 | DRM_VIRTUAL_DEVICE | |
277 | }, { | |
278 | &exynos_drm_platform_driver, | |
279 | DRM_VIRTUAL_DEVICE | |
280 | } | |
86650408 | 281 | }; |
f37cd5e8 | 282 | |
53c5558d | 283 | static int compare_dev(struct device *dev, void *data) |
f37cd5e8 ID |
284 | { |
285 | return dev == (struct device *)data; | |
286 | } | |
287 | ||
53c5558d | 288 | static struct component_match *exynos_drm_match_add(struct device *dev) |
f37cd5e8 | 289 | { |
53c5558d | 290 | struct component_match *match = NULL; |
86650408 | 291 | int i; |
f37cd5e8 | 292 | |
a5fb26cd MS |
293 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
294 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
86650408 | 295 | struct device *p = NULL, *d; |
f7c2f36f | 296 | |
a5fb26cd MS |
297 | if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER)) |
298 | continue; | |
299 | ||
300 | while ((d = bus_find_device(&platform_bus_type, p, | |
301 | &info->driver->driver, | |
86650408 AH |
302 | (void *)platform_bus_type.match))) { |
303 | put_device(p); | |
304 | component_match_add(dev, &match, compare_dev, d); | |
305 | p = d; | |
df5225bc | 306 | } |
86650408 | 307 | put_device(p); |
f37cd5e8 ID |
308 | } |
309 | ||
86650408 | 310 | return match ?: ERR_PTR(-ENODEV); |
f37cd5e8 ID |
311 | } |
312 | ||
313 | static int exynos_drm_bind(struct device *dev) | |
314 | { | |
896bbc3e LP |
315 | struct exynos_drm_private *private; |
316 | struct drm_encoder *encoder; | |
317 | struct drm_device *drm; | |
318 | unsigned int clone_mask; | |
319 | int cnt, ret; | |
320 | ||
321 | drm = drm_dev_alloc(&exynos_drm_driver, dev); | |
322 | if (IS_ERR(drm)) | |
323 | return PTR_ERR(drm); | |
324 | ||
325 | private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); | |
326 | if (!private) { | |
327 | ret = -ENOMEM; | |
328 | goto err_free_drm; | |
329 | } | |
330 | ||
331 | init_waitqueue_head(&private->wait); | |
332 | spin_lock_init(&private->lock); | |
333 | ||
334 | dev_set_drvdata(dev, drm); | |
335 | drm->dev_private = (void *)private; | |
336 | ||
337 | /* the first real CRTC device is used for all dma mapping operations */ | |
338 | private->dma_dev = exynos_drm_get_dma_device(); | |
339 | if (!private->dma_dev) { | |
340 | DRM_ERROR("no device found for DMA mapping operations.\n"); | |
341 | ret = -ENODEV; | |
342 | goto err_free_private; | |
343 | } | |
344 | DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n", | |
345 | dev_name(private->dma_dev)); | |
346 | ||
347 | /* create common IOMMU mapping for all devices attached to Exynos DRM */ | |
348 | ret = drm_create_iommu_mapping(drm); | |
349 | if (ret < 0) { | |
350 | DRM_ERROR("failed to create iommu mapping.\n"); | |
351 | goto err_free_private; | |
352 | } | |
353 | ||
354 | drm_mode_config_init(drm); | |
355 | ||
356 | exynos_drm_mode_config_init(drm); | |
357 | ||
358 | /* setup possible_clones. */ | |
359 | cnt = 0; | |
360 | clone_mask = 0; | |
361 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
362 | clone_mask |= (1 << (cnt++)); | |
363 | ||
364 | list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) | |
365 | encoder->possible_clones = clone_mask; | |
366 | ||
367 | /* Try to bind all sub drivers. */ | |
368 | ret = component_bind_all(drm->dev, drm); | |
369 | if (ret) | |
370 | goto err_mode_config_cleanup; | |
371 | ||
372 | ret = drm_vblank_init(drm, drm->mode_config.num_crtc); | |
373 | if (ret) | |
374 | goto err_unbind_all; | |
375 | ||
376 | /* Probe non kms sub drivers and virtual display driver. */ | |
377 | ret = exynos_drm_device_subdrv_probe(drm); | |
378 | if (ret) | |
379 | goto err_cleanup_vblank; | |
380 | ||
381 | drm_mode_config_reset(drm); | |
382 | ||
383 | /* | |
384 | * enable drm irq mode. | |
385 | * - with irq_enabled = true, we can use the vblank feature. | |
386 | * | |
387 | * P.S. note that we wouldn't use drm irq handler but | |
388 | * just specific driver own one instead because | |
389 | * drm framework supports only one irq handler. | |
390 | */ | |
391 | drm->irq_enabled = true; | |
392 | ||
393 | /* init kms poll for handling hpd */ | |
394 | drm_kms_helper_poll_init(drm); | |
395 | ||
396 | /* force connectors detection */ | |
397 | drm_helper_hpd_irq_event(drm); | |
398 | ||
399 | /* register the DRM device */ | |
400 | ret = drm_dev_register(drm, 0); | |
401 | if (ret < 0) | |
402 | goto err_cleanup_fbdev; | |
403 | ||
404 | return 0; | |
405 | ||
406 | err_cleanup_fbdev: | |
407 | exynos_drm_fbdev_fini(drm); | |
408 | drm_kms_helper_poll_fini(drm); | |
409 | exynos_drm_device_subdrv_remove(drm); | |
410 | err_cleanup_vblank: | |
411 | drm_vblank_cleanup(drm); | |
412 | err_unbind_all: | |
413 | component_unbind_all(drm->dev, drm); | |
414 | err_mode_config_cleanup: | |
415 | drm_mode_config_cleanup(drm); | |
416 | drm_release_iommu_mapping(drm); | |
417 | err_free_private: | |
418 | kfree(private); | |
419 | err_free_drm: | |
420 | drm_dev_unref(drm); | |
421 | ||
422 | return ret; | |
f37cd5e8 ID |
423 | } |
424 | ||
425 | static void exynos_drm_unbind(struct device *dev) | |
426 | { | |
896bbc3e LP |
427 | struct drm_device *drm = dev_get_drvdata(dev); |
428 | ||
429 | drm_dev_unregister(drm); | |
430 | ||
431 | exynos_drm_device_subdrv_remove(drm); | |
432 | ||
433 | exynos_drm_fbdev_fini(drm); | |
434 | drm_kms_helper_poll_fini(drm); | |
435 | ||
436 | component_unbind_all(drm->dev, drm); | |
437 | drm_mode_config_cleanup(drm); | |
438 | drm_release_iommu_mapping(drm); | |
439 | ||
440 | kfree(drm->dev_private); | |
441 | drm->dev_private = NULL; | |
442 | ||
443 | drm_dev_unref(drm); | |
f37cd5e8 ID |
444 | } |
445 | ||
446 | static const struct component_master_ops exynos_drm_ops = { | |
f37cd5e8 ID |
447 | .bind = exynos_drm_bind, |
448 | .unbind = exynos_drm_unbind, | |
1c248b7d ID |
449 | }; |
450 | ||
417133e4 AH |
451 | static int exynos_drm_platform_probe(struct platform_device *pdev) |
452 | { | |
453 | struct component_match *match; | |
454 | ||
455 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
456 | exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls); | |
457 | ||
458 | match = exynos_drm_match_add(&pdev->dev); | |
459 | if (IS_ERR(match)) | |
460 | return PTR_ERR(match); | |
461 | ||
462 | return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, | |
463 | match); | |
464 | } | |
465 | ||
466 | static int exynos_drm_platform_remove(struct platform_device *pdev) | |
467 | { | |
468 | component_master_del(&pdev->dev, &exynos_drm_ops); | |
469 | return 0; | |
470 | } | |
471 | ||
472 | static struct platform_driver exynos_drm_platform_driver = { | |
473 | .probe = exynos_drm_platform_probe, | |
474 | .remove = exynos_drm_platform_remove, | |
475 | .driver = { | |
476 | .name = "exynos-drm", | |
477 | .pm = &exynos_drm_pm_ops, | |
478 | }, | |
479 | }; | |
480 | ||
f43c3596 MS |
481 | static struct device *exynos_drm_get_dma_device(void) |
482 | { | |
483 | int i; | |
484 | ||
485 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { | |
486 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
487 | struct device *dev; | |
488 | ||
489 | if (!info->driver || !(info->flags & DRM_DMA_DEVICE)) | |
490 | continue; | |
491 | ||
492 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
493 | &info->driver->driver, | |
494 | (void *)platform_bus_type.match))) { | |
495 | put_device(dev); | |
496 | return dev; | |
497 | } | |
498 | } | |
499 | return NULL; | |
500 | } | |
501 | ||
417133e4 | 502 | static void exynos_drm_unregister_devices(void) |
72390677 | 503 | { |
a5fb26cd MS |
504 | int i; |
505 | ||
506 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { | |
507 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
508 | struct device *dev; | |
25928a39 | 509 | |
a5fb26cd MS |
510 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
511 | continue; | |
512 | ||
513 | while ((dev = bus_find_device(&platform_bus_type, NULL, | |
514 | &info->driver->driver, | |
515 | (void *)platform_bus_type.match))) { | |
516 | put_device(dev); | |
517 | platform_device_unregister(to_platform_device(dev)); | |
518 | } | |
417133e4 AH |
519 | } |
520 | } | |
7eb8f069 | 521 | |
417133e4 AH |
522 | static int exynos_drm_register_devices(void) |
523 | { | |
a5fb26cd | 524 | struct platform_device *pdev; |
417133e4 AH |
525 | int i; |
526 | ||
a5fb26cd MS |
527 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
528 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 529 | |
a5fb26cd | 530 | if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) |
417133e4 | 531 | continue; |
417133e4 | 532 | |
a5fb26cd MS |
533 | pdev = platform_device_register_simple( |
534 | info->driver->driver.name, -1, NULL, 0); | |
535 | if (IS_ERR(pdev)) | |
536 | goto fail; | |
72390677 | 537 | } |
f37cd5e8 | 538 | |
417133e4 | 539 | return 0; |
a5fb26cd MS |
540 | fail: |
541 | exynos_drm_unregister_devices(); | |
542 | return PTR_ERR(pdev); | |
1c248b7d ID |
543 | } |
544 | ||
a5fb26cd | 545 | static void exynos_drm_unregister_drivers(void) |
1c248b7d | 546 | { |
a5fb26cd | 547 | int i; |
417133e4 | 548 | |
a5fb26cd MS |
549 | for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { |
550 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 551 | |
a5fb26cd | 552 | if (!info->driver) |
417133e4 AH |
553 | continue; |
554 | ||
a5fb26cd | 555 | platform_driver_unregister(info->driver); |
417133e4 | 556 | } |
f37cd5e8 ID |
557 | } |
558 | ||
a5fb26cd | 559 | static int exynos_drm_register_drivers(void) |
417133e4 | 560 | { |
a5fb26cd | 561 | int i, ret; |
417133e4 | 562 | |
a5fb26cd MS |
563 | for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { |
564 | struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; | |
417133e4 | 565 | |
a5fb26cd MS |
566 | if (!info->driver) |
567 | continue; | |
417133e4 | 568 | |
a5fb26cd MS |
569 | ret = platform_driver_register(info->driver); |
570 | if (ret) | |
571 | goto fail; | |
572 | } | |
573 | return 0; | |
574 | fail: | |
575 | exynos_drm_unregister_drivers(); | |
576 | return ret; | |
417133e4 AH |
577 | } |
578 | ||
f37cd5e8 ID |
579 | static int exynos_drm_init(void) |
580 | { | |
e3b9e460 | 581 | int ret; |
f37cd5e8 | 582 | |
417133e4 AH |
583 | ret = exynos_drm_register_devices(); |
584 | if (ret) | |
585 | return ret; | |
820687be | 586 | |
a5fb26cd | 587 | ret = exynos_drm_register_drivers(); |
417133e4 AH |
588 | if (ret) |
589 | goto err_unregister_pdevs; | |
f37cd5e8 | 590 | |
f37cd5e8 ID |
591 | return 0; |
592 | ||
417133e4 AH |
593 | err_unregister_pdevs: |
594 | exynos_drm_unregister_devices(); | |
f37cd5e8 ID |
595 | |
596 | return ret; | |
597 | } | |
598 | ||
599 | static void exynos_drm_exit(void) | |
600 | { | |
a5fb26cd | 601 | exynos_drm_unregister_drivers(); |
417133e4 | 602 | exynos_drm_unregister_devices(); |
1c248b7d ID |
603 | } |
604 | ||
605 | module_init(exynos_drm_init); | |
606 | module_exit(exynos_drm_exit); | |
607 | ||
608 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); | |
609 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
610 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
611 | MODULE_DESCRIPTION("Samsung SoC DRM Driver"); | |
612 | MODULE_LICENSE("GPL"); |