Commit | Line | Data |
---|---|---|
2048e328 MY |
1 | /* |
2 | * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd | |
3 | * Author:Mark Yao <mark.yao@rock-chips.com> | |
4 | * | |
5 | * based on exynos_drm_drv.c | |
6 | * | |
7 | * This software is licensed under the terms of the GNU General Public | |
8 | * License version 2, as published by the Free Software Foundation, and | |
9 | * may be copied, distributed, and modified under those terms. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | */ | |
16 | ||
17 | #include <asm/dma-iommu.h> | |
18 | ||
19 | #include <drm/drmP.h> | |
20 | #include <drm/drm_crtc_helper.h> | |
21 | #include <drm/drm_fb_helper.h> | |
22 | #include <linux/dma-mapping.h> | |
23 | #include <linux/pm_runtime.h> | |
00fe6148 | 24 | #include <linux/module.h> |
2048e328 MY |
25 | #include <linux/of_graph.h> |
26 | #include <linux/component.h> | |
27 | ||
28 | #include "rockchip_drm_drv.h" | |
29 | #include "rockchip_drm_fb.h" | |
30 | #include "rockchip_drm_fbdev.h" | |
31 | #include "rockchip_drm_gem.h" | |
32 | ||
33 | #define DRIVER_NAME "rockchip" | |
34 | #define DRIVER_DESC "RockChip Soc DRM" | |
35 | #define DRIVER_DATE "20140818" | |
36 | #define DRIVER_MAJOR 1 | |
37 | #define DRIVER_MINOR 0 | |
38 | ||
39 | /* | |
40 | * Attach a (component) device to the shared drm dma mapping from master drm | |
41 | * device. This is used by the VOPs to map GEM buffers to a common DMA | |
42 | * mapping. | |
43 | */ | |
44 | int rockchip_drm_dma_attach_device(struct drm_device *drm_dev, | |
45 | struct device *dev) | |
46 | { | |
47 | struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping; | |
48 | int ret; | |
49 | ||
50 | ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); | |
51 | if (ret) | |
52 | return ret; | |
53 | ||
54 | dma_set_max_seg_size(dev, DMA_BIT_MASK(32)); | |
55 | ||
56 | return arm_iommu_attach_device(dev, mapping); | |
57 | } | |
2048e328 MY |
58 | |
59 | void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, | |
60 | struct device *dev) | |
61 | { | |
62 | arm_iommu_detach_device(dev); | |
63 | } | |
2048e328 | 64 | |
b5f7b755 MY |
65 | int rockchip_register_crtc_funcs(struct drm_crtc *crtc, |
66 | const struct rockchip_crtc_funcs *crtc_funcs) | |
2048e328 | 67 | { |
b5f7b755 MY |
68 | int pipe = drm_crtc_index(crtc); |
69 | struct rockchip_drm_private *priv = crtc->dev->dev_private; | |
2048e328 MY |
70 | |
71 | if (pipe > ROCKCHIP_MAX_CRTC) | |
72 | return -EINVAL; | |
73 | ||
74 | priv->crtc_funcs[pipe] = crtc_funcs; | |
75 | ||
76 | return 0; | |
77 | } | |
2048e328 | 78 | |
b5f7b755 | 79 | void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc) |
2048e328 | 80 | { |
b5f7b755 MY |
81 | int pipe = drm_crtc_index(crtc); |
82 | struct rockchip_drm_private *priv = crtc->dev->dev_private; | |
2048e328 MY |
83 | |
84 | if (pipe > ROCKCHIP_MAX_CRTC) | |
85 | return; | |
86 | ||
87 | priv->crtc_funcs[pipe] = NULL; | |
88 | } | |
2048e328 MY |
89 | |
90 | static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm, | |
91 | int pipe) | |
92 | { | |
93 | struct drm_crtc *crtc; | |
94 | int i = 0; | |
95 | ||
96 | list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) | |
97 | if (i++ == pipe) | |
98 | return crtc; | |
99 | ||
100 | return NULL; | |
101 | } | |
102 | ||
88e72717 TR |
103 | static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, |
104 | unsigned int pipe) | |
2048e328 MY |
105 | { |
106 | struct rockchip_drm_private *priv = dev->dev_private; | |
107 | struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe); | |
108 | ||
109 | if (crtc && priv->crtc_funcs[pipe] && | |
110 | priv->crtc_funcs[pipe]->enable_vblank) | |
111 | return priv->crtc_funcs[pipe]->enable_vblank(crtc); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
88e72717 TR |
116 | static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, |
117 | unsigned int pipe) | |
2048e328 MY |
118 | { |
119 | struct rockchip_drm_private *priv = dev->dev_private; | |
120 | struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe); | |
121 | ||
122 | if (crtc && priv->crtc_funcs[pipe] && | |
123 | priv->crtc_funcs[pipe]->enable_vblank) | |
124 | priv->crtc_funcs[pipe]->disable_vblank(crtc); | |
125 | } | |
126 | ||
127 | static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags) | |
128 | { | |
129 | struct rockchip_drm_private *private; | |
130 | struct dma_iommu_mapping *mapping; | |
131 | struct device *dev = drm_dev->dev; | |
d3007dab | 132 | struct drm_connector *connector; |
2048e328 MY |
133 | int ret; |
134 | ||
135 | private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL); | |
136 | if (!private) | |
137 | return -ENOMEM; | |
138 | ||
f32fad51 MY |
139 | mutex_init(&private->commit.lock); |
140 | INIT_WORK(&private->commit.work, rockchip_drm_atomic_work); | |
141 | ||
2048e328 MY |
142 | drm_dev->dev_private = private; |
143 | ||
144 | drm_mode_config_init(drm_dev); | |
145 | ||
146 | rockchip_drm_mode_config_init(drm_dev); | |
147 | ||
148 | dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms), | |
149 | GFP_KERNEL); | |
150 | if (!dev->dma_parms) { | |
151 | ret = -ENOMEM; | |
152 | goto err_config_cleanup; | |
153 | } | |
154 | ||
155 | /* TODO(djkurtz): fetch the mapping start/size from somewhere */ | |
156 | mapping = arm_iommu_create_mapping(&platform_bus_type, 0x00000000, | |
157 | SZ_2G); | |
158 | if (IS_ERR(mapping)) { | |
159 | ret = PTR_ERR(mapping); | |
160 | goto err_config_cleanup; | |
161 | } | |
162 | ||
163 | ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); | |
164 | if (ret) | |
165 | goto err_release_mapping; | |
166 | ||
167 | dma_set_max_seg_size(dev, DMA_BIT_MASK(32)); | |
168 | ||
169 | ret = arm_iommu_attach_device(dev, mapping); | |
170 | if (ret) | |
171 | goto err_release_mapping; | |
172 | ||
173 | /* Try to bind all sub drivers. */ | |
174 | ret = component_bind_all(dev, drm_dev); | |
175 | if (ret) | |
176 | goto err_detach_device; | |
177 | ||
d3007dab DK |
178 | /* |
179 | * All components are now added, we can publish the connector sysfs | |
180 | * entries to userspace. This will generate hotplug events and so | |
181 | * userspace will expect to be able to access DRM at this point. | |
182 | */ | |
183 | list_for_each_entry(connector, &drm_dev->mode_config.connector_list, | |
184 | head) { | |
185 | ret = drm_connector_register(connector); | |
186 | if (ret) { | |
187 | dev_err(drm_dev->dev, | |
188 | "[CONNECTOR:%d:%s] drm_connector_register failed: %d\n", | |
189 | connector->base.id, | |
190 | connector->name, ret); | |
191 | goto err_unbind; | |
192 | } | |
193 | } | |
194 | ||
2048e328 MY |
195 | /* init kms poll for handling hpd */ |
196 | drm_kms_helper_poll_init(drm_dev); | |
197 | ||
198 | /* | |
199 | * enable drm irq mode. | |
200 | * - with irq_enabled = true, we can use the vblank feature. | |
201 | */ | |
202 | drm_dev->irq_enabled = true; | |
203 | ||
204 | ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC); | |
205 | if (ret) | |
206 | goto err_kms_helper_poll_fini; | |
207 | ||
208 | /* | |
209 | * with vblank_disable_allowed = true, vblank interrupt will be disabled | |
210 | * by drm timer once a current process gives up ownership of | |
211 | * vblank event.(after drm_vblank_put function is called) | |
212 | */ | |
213 | drm_dev->vblank_disable_allowed = true; | |
214 | ||
63ebb9fa MY |
215 | drm_mode_config_reset(drm_dev); |
216 | ||
2048e328 MY |
217 | ret = rockchip_drm_fbdev_init(drm_dev); |
218 | if (ret) | |
219 | goto err_vblank_cleanup; | |
220 | ||
221 | return 0; | |
222 | err_vblank_cleanup: | |
223 | drm_vblank_cleanup(drm_dev); | |
224 | err_kms_helper_poll_fini: | |
225 | drm_kms_helper_poll_fini(drm_dev); | |
d3007dab | 226 | err_unbind: |
2048e328 MY |
227 | component_unbind_all(dev, drm_dev); |
228 | err_detach_device: | |
229 | arm_iommu_detach_device(dev); | |
230 | err_release_mapping: | |
231 | arm_iommu_release_mapping(dev->archdata.mapping); | |
232 | err_config_cleanup: | |
233 | drm_mode_config_cleanup(drm_dev); | |
234 | drm_dev->dev_private = NULL; | |
235 | return ret; | |
236 | } | |
237 | ||
238 | static int rockchip_drm_unload(struct drm_device *drm_dev) | |
239 | { | |
240 | struct device *dev = drm_dev->dev; | |
241 | ||
242 | rockchip_drm_fbdev_fini(drm_dev); | |
243 | drm_vblank_cleanup(drm_dev); | |
244 | drm_kms_helper_poll_fini(drm_dev); | |
245 | component_unbind_all(dev, drm_dev); | |
246 | arm_iommu_detach_device(dev); | |
247 | arm_iommu_release_mapping(dev->archdata.mapping); | |
248 | drm_mode_config_cleanup(drm_dev); | |
249 | drm_dev->dev_private = NULL; | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
f135046e JK |
254 | static void rockchip_drm_crtc_cancel_pending_vblank(struct drm_crtc *crtc, |
255 | struct drm_file *file_priv) | |
256 | { | |
257 | struct rockchip_drm_private *priv = crtc->dev->dev_private; | |
258 | int pipe = drm_crtc_index(crtc); | |
259 | ||
260 | if (pipe < ROCKCHIP_MAX_CRTC && | |
261 | priv->crtc_funcs[pipe] && | |
262 | priv->crtc_funcs[pipe]->cancel_pending_vblank) | |
263 | priv->crtc_funcs[pipe]->cancel_pending_vblank(crtc, file_priv); | |
264 | } | |
265 | ||
266 | static void rockchip_drm_preclose(struct drm_device *dev, | |
267 | struct drm_file *file_priv) | |
268 | { | |
269 | struct drm_crtc *crtc; | |
270 | ||
271 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
272 | rockchip_drm_crtc_cancel_pending_vblank(crtc, file_priv); | |
273 | } | |
274 | ||
2048e328 MY |
275 | void rockchip_drm_lastclose(struct drm_device *dev) |
276 | { | |
277 | struct rockchip_drm_private *priv = dev->dev_private; | |
278 | ||
279 | drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper); | |
280 | } | |
281 | ||
282 | static const struct file_operations rockchip_drm_driver_fops = { | |
283 | .owner = THIS_MODULE, | |
284 | .open = drm_open, | |
285 | .mmap = rockchip_gem_mmap, | |
286 | .poll = drm_poll, | |
287 | .read = drm_read, | |
288 | .unlocked_ioctl = drm_ioctl, | |
289 | #ifdef CONFIG_COMPAT | |
290 | .compat_ioctl = drm_compat_ioctl, | |
291 | #endif | |
292 | .release = drm_release, | |
293 | }; | |
294 | ||
295 | const struct vm_operations_struct rockchip_drm_vm_ops = { | |
296 | .open = drm_gem_vm_open, | |
297 | .close = drm_gem_vm_close, | |
298 | }; | |
299 | ||
300 | static struct drm_driver rockchip_drm_driver = { | |
63ebb9fa MY |
301 | .driver_features = DRIVER_MODESET | DRIVER_GEM | |
302 | DRIVER_PRIME | DRIVER_ATOMIC, | |
2048e328 MY |
303 | .load = rockchip_drm_load, |
304 | .unload = rockchip_drm_unload, | |
f135046e | 305 | .preclose = rockchip_drm_preclose, |
2048e328 | 306 | .lastclose = rockchip_drm_lastclose, |
b44f8408 | 307 | .get_vblank_counter = drm_vblank_no_hw_counter, |
2048e328 MY |
308 | .enable_vblank = rockchip_drm_crtc_enable_vblank, |
309 | .disable_vblank = rockchip_drm_crtc_disable_vblank, | |
310 | .gem_vm_ops = &rockchip_drm_vm_ops, | |
311 | .gem_free_object = rockchip_gem_free_object, | |
312 | .dumb_create = rockchip_gem_dumb_create, | |
313 | .dumb_map_offset = rockchip_gem_dumb_map_offset, | |
314 | .dumb_destroy = drm_gem_dumb_destroy, | |
315 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
316 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
317 | .gem_prime_import = drm_gem_prime_import, | |
318 | .gem_prime_export = drm_gem_prime_export, | |
319 | .gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table, | |
320 | .gem_prime_vmap = rockchip_gem_prime_vmap, | |
321 | .gem_prime_vunmap = rockchip_gem_prime_vunmap, | |
322 | .gem_prime_mmap = rockchip_gem_mmap_buf, | |
323 | .fops = &rockchip_drm_driver_fops, | |
324 | .name = DRIVER_NAME, | |
325 | .desc = DRIVER_DESC, | |
326 | .date = DRIVER_DATE, | |
327 | .major = DRIVER_MAJOR, | |
328 | .minor = DRIVER_MINOR, | |
329 | }; | |
330 | ||
331 | #ifdef CONFIG_PM_SLEEP | |
332 | static int rockchip_drm_sys_suspend(struct device *dev) | |
333 | { | |
334 | struct drm_device *drm = dev_get_drvdata(dev); | |
335 | struct drm_connector *connector; | |
336 | ||
337 | if (!drm) | |
338 | return 0; | |
339 | ||
340 | drm_modeset_lock_all(drm); | |
341 | list_for_each_entry(connector, &drm->mode_config.connector_list, head) { | |
342 | int old_dpms = connector->dpms; | |
343 | ||
344 | if (connector->funcs->dpms) | |
345 | connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); | |
346 | ||
347 | /* Set the old mode back to the connector for resume */ | |
348 | connector->dpms = old_dpms; | |
349 | } | |
350 | drm_modeset_unlock_all(drm); | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | static int rockchip_drm_sys_resume(struct device *dev) | |
356 | { | |
357 | struct drm_device *drm = dev_get_drvdata(dev); | |
358 | struct drm_connector *connector; | |
359 | enum drm_connector_status status; | |
360 | bool changed = false; | |
361 | ||
362 | if (!drm) | |
363 | return 0; | |
364 | ||
365 | drm_modeset_lock_all(drm); | |
366 | list_for_each_entry(connector, &drm->mode_config.connector_list, head) { | |
367 | int desired_mode = connector->dpms; | |
368 | ||
369 | /* | |
370 | * at suspend time, we save dpms to connector->dpms, | |
371 | * restore the old_dpms, and at current time, the connector | |
372 | * dpms status must be DRM_MODE_DPMS_OFF. | |
373 | */ | |
374 | connector->dpms = DRM_MODE_DPMS_OFF; | |
375 | ||
376 | /* | |
377 | * If the connector has been disconnected during suspend, | |
378 | * disconnect it from the encoder and leave it off. We'll notify | |
379 | * userspace at the end. | |
380 | */ | |
381 | if (desired_mode == DRM_MODE_DPMS_ON) { | |
382 | status = connector->funcs->detect(connector, true); | |
383 | if (status == connector_status_disconnected) { | |
384 | connector->encoder = NULL; | |
385 | connector->status = status; | |
386 | changed = true; | |
387 | continue; | |
388 | } | |
389 | } | |
390 | if (connector->funcs->dpms) | |
391 | connector->funcs->dpms(connector, desired_mode); | |
392 | } | |
393 | drm_modeset_unlock_all(drm); | |
394 | ||
395 | drm_helper_resume_force_mode(drm); | |
396 | ||
397 | if (changed) | |
398 | drm_kms_helper_hotplug_event(drm); | |
399 | ||
400 | return 0; | |
401 | } | |
402 | #endif | |
403 | ||
404 | static const struct dev_pm_ops rockchip_drm_pm_ops = { | |
405 | SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend, | |
406 | rockchip_drm_sys_resume) | |
407 | }; | |
408 | ||
2048e328 MY |
409 | static int compare_of(struct device *dev, void *data) |
410 | { | |
411 | struct device_node *np = data; | |
412 | ||
413 | return dev->of_node == np; | |
414 | } | |
415 | ||
5bad7d29 MY |
416 | static void rockchip_add_endpoints(struct device *dev, |
417 | struct component_match **match, | |
418 | struct device_node *port) | |
419 | { | |
420 | struct device_node *ep, *remote; | |
421 | ||
422 | for_each_child_of_node(port, ep) { | |
423 | remote = of_graph_get_remote_port_parent(ep); | |
424 | if (!remote || !of_device_is_available(remote)) { | |
425 | of_node_put(remote); | |
426 | continue; | |
427 | } else if (!of_device_is_available(remote->parent)) { | |
428 | dev_warn(dev, "parent device of %s is not available\n", | |
429 | remote->full_name); | |
430 | of_node_put(remote); | |
431 | continue; | |
432 | } | |
433 | ||
434 | component_match_add(dev, match, compare_of, remote); | |
435 | of_node_put(remote); | |
436 | } | |
437 | } | |
438 | ||
2048e328 MY |
439 | static int rockchip_drm_bind(struct device *dev) |
440 | { | |
441 | struct drm_device *drm; | |
442 | int ret; | |
443 | ||
444 | drm = drm_dev_alloc(&rockchip_drm_driver, dev); | |
445 | if (!drm) | |
446 | return -ENOMEM; | |
447 | ||
2048e328 MY |
448 | ret = drm_dev_register(drm, 0); |
449 | if (ret) | |
450 | goto err_free; | |
451 | ||
452 | dev_set_drvdata(dev, drm); | |
453 | ||
454 | return 0; | |
455 | ||
456 | err_free: | |
457 | drm_dev_unref(drm); | |
458 | return ret; | |
459 | } | |
460 | ||
461 | static void rockchip_drm_unbind(struct device *dev) | |
462 | { | |
463 | struct drm_device *drm = dev_get_drvdata(dev); | |
464 | ||
465 | drm_dev_unregister(drm); | |
466 | drm_dev_unref(drm); | |
467 | dev_set_drvdata(dev, NULL); | |
468 | } | |
469 | ||
470 | static const struct component_master_ops rockchip_drm_ops = { | |
471 | .bind = rockchip_drm_bind, | |
472 | .unbind = rockchip_drm_unbind, | |
473 | }; | |
474 | ||
475 | static int rockchip_drm_platform_probe(struct platform_device *pdev) | |
476 | { | |
5bad7d29 MY |
477 | struct device *dev = &pdev->dev; |
478 | struct component_match *match = NULL; | |
479 | struct device_node *np = dev->of_node; | |
480 | struct device_node *port; | |
481 | int i; | |
2048e328 | 482 | |
5bad7d29 | 483 | if (!np) |
2048e328 | 484 | return -ENODEV; |
5bad7d29 MY |
485 | /* |
486 | * Bind the crtc ports first, so that | |
487 | * drm_of_find_possible_crtcs called from encoder .bind callbacks | |
488 | * works as expected. | |
489 | */ | |
490 | for (i = 0;; i++) { | |
491 | port = of_parse_phandle(np, "ports", i); | |
492 | if (!port) | |
493 | break; | |
494 | ||
495 | if (!of_device_is_available(port->parent)) { | |
496 | of_node_put(port); | |
497 | continue; | |
498 | } | |
2048e328 | 499 | |
5bad7d29 MY |
500 | component_match_add(dev, &match, compare_of, port->parent); |
501 | of_node_put(port); | |
502 | } | |
503 | ||
504 | if (i == 0) { | |
505 | dev_err(dev, "missing 'ports' property\n"); | |
506 | return -ENODEV; | |
507 | } | |
508 | ||
509 | if (!match) { | |
510 | dev_err(dev, "No available vop found for display-subsystem.\n"); | |
511 | return -ENODEV; | |
512 | } | |
513 | /* | |
514 | * For each bound crtc, bind the encoders attached to its | |
515 | * remote endpoint. | |
516 | */ | |
517 | for (i = 0;; i++) { | |
518 | port = of_parse_phandle(np, "ports", i); | |
519 | if (!port) | |
520 | break; | |
521 | ||
522 | if (!of_device_is_available(port->parent)) { | |
523 | of_node_put(port); | |
524 | continue; | |
525 | } | |
526 | ||
527 | rockchip_add_endpoints(dev, &match, port); | |
528 | of_node_put(port); | |
529 | } | |
530 | ||
531 | return component_master_add_with_match(dev, &rockchip_drm_ops, match); | |
2048e328 MY |
532 | } |
533 | ||
534 | static int rockchip_drm_platform_remove(struct platform_device *pdev) | |
535 | { | |
536 | component_master_del(&pdev->dev, &rockchip_drm_ops); | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static const struct of_device_id rockchip_drm_dt_ids[] = { | |
542 | { .compatible = "rockchip,display-subsystem", }, | |
543 | { /* sentinel */ }, | |
544 | }; | |
545 | MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids); | |
546 | ||
547 | static struct platform_driver rockchip_drm_platform_driver = { | |
548 | .probe = rockchip_drm_platform_probe, | |
549 | .remove = rockchip_drm_platform_remove, | |
550 | .driver = { | |
2048e328 MY |
551 | .name = "rockchip-drm", |
552 | .of_match_table = rockchip_drm_dt_ids, | |
553 | .pm = &rockchip_drm_pm_ops, | |
554 | }, | |
555 | }; | |
556 | ||
557 | module_platform_driver(rockchip_drm_platform_driver); | |
558 | ||
559 | MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>"); | |
560 | MODULE_DESCRIPTION("ROCKCHIP DRM Driver"); | |
561 | MODULE_LICENSE("GPL v2"); |