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 | } | |
58 | EXPORT_SYMBOL_GPL(rockchip_drm_dma_attach_device); | |
59 | ||
60 | void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, | |
61 | struct device *dev) | |
62 | { | |
63 | arm_iommu_detach_device(dev); | |
64 | } | |
65 | EXPORT_SYMBOL_GPL(rockchip_drm_dma_detach_device); | |
66 | ||
67 | int rockchip_register_crtc_funcs(struct drm_device *dev, | |
68 | const struct rockchip_crtc_funcs *crtc_funcs, | |
69 | int pipe) | |
70 | { | |
71 | struct rockchip_drm_private *priv = dev->dev_private; | |
72 | ||
73 | if (pipe > ROCKCHIP_MAX_CRTC) | |
74 | return -EINVAL; | |
75 | ||
76 | priv->crtc_funcs[pipe] = crtc_funcs; | |
77 | ||
78 | return 0; | |
79 | } | |
80 | EXPORT_SYMBOL_GPL(rockchip_register_crtc_funcs); | |
81 | ||
82 | void rockchip_unregister_crtc_funcs(struct drm_device *dev, int pipe) | |
83 | { | |
84 | struct rockchip_drm_private *priv = dev->dev_private; | |
85 | ||
86 | if (pipe > ROCKCHIP_MAX_CRTC) | |
87 | return; | |
88 | ||
89 | priv->crtc_funcs[pipe] = NULL; | |
90 | } | |
91 | EXPORT_SYMBOL_GPL(rockchip_unregister_crtc_funcs); | |
92 | ||
93 | static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm, | |
94 | int pipe) | |
95 | { | |
96 | struct drm_crtc *crtc; | |
97 | int i = 0; | |
98 | ||
99 | list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) | |
100 | if (i++ == pipe) | |
101 | return crtc; | |
102 | ||
103 | return NULL; | |
104 | } | |
105 | ||
88e72717 TR |
106 | static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, |
107 | unsigned int pipe) | |
2048e328 MY |
108 | { |
109 | struct rockchip_drm_private *priv = dev->dev_private; | |
110 | struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe); | |
111 | ||
112 | if (crtc && priv->crtc_funcs[pipe] && | |
113 | priv->crtc_funcs[pipe]->enable_vblank) | |
114 | return priv->crtc_funcs[pipe]->enable_vblank(crtc); | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
88e72717 TR |
119 | static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, |
120 | unsigned int pipe) | |
2048e328 MY |
121 | { |
122 | struct rockchip_drm_private *priv = dev->dev_private; | |
123 | struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe); | |
124 | ||
125 | if (crtc && priv->crtc_funcs[pipe] && | |
126 | priv->crtc_funcs[pipe]->enable_vblank) | |
127 | priv->crtc_funcs[pipe]->disable_vblank(crtc); | |
128 | } | |
129 | ||
130 | static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags) | |
131 | { | |
132 | struct rockchip_drm_private *private; | |
133 | struct dma_iommu_mapping *mapping; | |
134 | struct device *dev = drm_dev->dev; | |
d3007dab | 135 | struct drm_connector *connector; |
2048e328 MY |
136 | int ret; |
137 | ||
138 | private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL); | |
139 | if (!private) | |
140 | return -ENOMEM; | |
141 | ||
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 | ||
215 | ret = rockchip_drm_fbdev_init(drm_dev); | |
216 | if (ret) | |
217 | goto err_vblank_cleanup; | |
218 | ||
219 | return 0; | |
220 | err_vblank_cleanup: | |
221 | drm_vblank_cleanup(drm_dev); | |
222 | err_kms_helper_poll_fini: | |
223 | drm_kms_helper_poll_fini(drm_dev); | |
d3007dab | 224 | err_unbind: |
2048e328 MY |
225 | component_unbind_all(dev, drm_dev); |
226 | err_detach_device: | |
227 | arm_iommu_detach_device(dev); | |
228 | err_release_mapping: | |
229 | arm_iommu_release_mapping(dev->archdata.mapping); | |
230 | err_config_cleanup: | |
231 | drm_mode_config_cleanup(drm_dev); | |
232 | drm_dev->dev_private = NULL; | |
233 | return ret; | |
234 | } | |
235 | ||
236 | static int rockchip_drm_unload(struct drm_device *drm_dev) | |
237 | { | |
238 | struct device *dev = drm_dev->dev; | |
239 | ||
240 | rockchip_drm_fbdev_fini(drm_dev); | |
241 | drm_vblank_cleanup(drm_dev); | |
242 | drm_kms_helper_poll_fini(drm_dev); | |
243 | component_unbind_all(dev, drm_dev); | |
244 | arm_iommu_detach_device(dev); | |
245 | arm_iommu_release_mapping(dev->archdata.mapping); | |
246 | drm_mode_config_cleanup(drm_dev); | |
247 | drm_dev->dev_private = NULL; | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | void rockchip_drm_lastclose(struct drm_device *dev) | |
253 | { | |
254 | struct rockchip_drm_private *priv = dev->dev_private; | |
255 | ||
256 | drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper); | |
257 | } | |
258 | ||
259 | static const struct file_operations rockchip_drm_driver_fops = { | |
260 | .owner = THIS_MODULE, | |
261 | .open = drm_open, | |
262 | .mmap = rockchip_gem_mmap, | |
263 | .poll = drm_poll, | |
264 | .read = drm_read, | |
265 | .unlocked_ioctl = drm_ioctl, | |
266 | #ifdef CONFIG_COMPAT | |
267 | .compat_ioctl = drm_compat_ioctl, | |
268 | #endif | |
269 | .release = drm_release, | |
270 | }; | |
271 | ||
272 | const struct vm_operations_struct rockchip_drm_vm_ops = { | |
273 | .open = drm_gem_vm_open, | |
274 | .close = drm_gem_vm_close, | |
275 | }; | |
276 | ||
277 | static struct drm_driver rockchip_drm_driver = { | |
278 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, | |
279 | .load = rockchip_drm_load, | |
280 | .unload = rockchip_drm_unload, | |
281 | .lastclose = rockchip_drm_lastclose, | |
b44f8408 | 282 | .get_vblank_counter = drm_vblank_no_hw_counter, |
2048e328 MY |
283 | .enable_vblank = rockchip_drm_crtc_enable_vblank, |
284 | .disable_vblank = rockchip_drm_crtc_disable_vblank, | |
285 | .gem_vm_ops = &rockchip_drm_vm_ops, | |
286 | .gem_free_object = rockchip_gem_free_object, | |
287 | .dumb_create = rockchip_gem_dumb_create, | |
288 | .dumb_map_offset = rockchip_gem_dumb_map_offset, | |
289 | .dumb_destroy = drm_gem_dumb_destroy, | |
290 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
291 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
292 | .gem_prime_import = drm_gem_prime_import, | |
293 | .gem_prime_export = drm_gem_prime_export, | |
294 | .gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table, | |
295 | .gem_prime_vmap = rockchip_gem_prime_vmap, | |
296 | .gem_prime_vunmap = rockchip_gem_prime_vunmap, | |
297 | .gem_prime_mmap = rockchip_gem_mmap_buf, | |
298 | .fops = &rockchip_drm_driver_fops, | |
299 | .name = DRIVER_NAME, | |
300 | .desc = DRIVER_DESC, | |
301 | .date = DRIVER_DATE, | |
302 | .major = DRIVER_MAJOR, | |
303 | .minor = DRIVER_MINOR, | |
304 | }; | |
305 | ||
306 | #ifdef CONFIG_PM_SLEEP | |
307 | static int rockchip_drm_sys_suspend(struct device *dev) | |
308 | { | |
309 | struct drm_device *drm = dev_get_drvdata(dev); | |
310 | struct drm_connector *connector; | |
311 | ||
312 | if (!drm) | |
313 | return 0; | |
314 | ||
315 | drm_modeset_lock_all(drm); | |
316 | list_for_each_entry(connector, &drm->mode_config.connector_list, head) { | |
317 | int old_dpms = connector->dpms; | |
318 | ||
319 | if (connector->funcs->dpms) | |
320 | connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); | |
321 | ||
322 | /* Set the old mode back to the connector for resume */ | |
323 | connector->dpms = old_dpms; | |
324 | } | |
325 | drm_modeset_unlock_all(drm); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
330 | static int rockchip_drm_sys_resume(struct device *dev) | |
331 | { | |
332 | struct drm_device *drm = dev_get_drvdata(dev); | |
333 | struct drm_connector *connector; | |
334 | enum drm_connector_status status; | |
335 | bool changed = false; | |
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 desired_mode = connector->dpms; | |
343 | ||
344 | /* | |
345 | * at suspend time, we save dpms to connector->dpms, | |
346 | * restore the old_dpms, and at current time, the connector | |
347 | * dpms status must be DRM_MODE_DPMS_OFF. | |
348 | */ | |
349 | connector->dpms = DRM_MODE_DPMS_OFF; | |
350 | ||
351 | /* | |
352 | * If the connector has been disconnected during suspend, | |
353 | * disconnect it from the encoder and leave it off. We'll notify | |
354 | * userspace at the end. | |
355 | */ | |
356 | if (desired_mode == DRM_MODE_DPMS_ON) { | |
357 | status = connector->funcs->detect(connector, true); | |
358 | if (status == connector_status_disconnected) { | |
359 | connector->encoder = NULL; | |
360 | connector->status = status; | |
361 | changed = true; | |
362 | continue; | |
363 | } | |
364 | } | |
365 | if (connector->funcs->dpms) | |
366 | connector->funcs->dpms(connector, desired_mode); | |
367 | } | |
368 | drm_modeset_unlock_all(drm); | |
369 | ||
370 | drm_helper_resume_force_mode(drm); | |
371 | ||
372 | if (changed) | |
373 | drm_kms_helper_hotplug_event(drm); | |
374 | ||
375 | return 0; | |
376 | } | |
377 | #endif | |
378 | ||
379 | static const struct dev_pm_ops rockchip_drm_pm_ops = { | |
380 | SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend, | |
381 | rockchip_drm_sys_resume) | |
382 | }; | |
383 | ||
384 | /* | |
385 | * @node: device tree node containing encoder input ports | |
386 | * @encoder: drm_encoder | |
387 | */ | |
388 | int rockchip_drm_encoder_get_mux_id(struct device_node *node, | |
389 | struct drm_encoder *encoder) | |
390 | { | |
ecaa4902 | 391 | struct device_node *ep; |
2048e328 MY |
392 | struct drm_crtc *crtc = encoder->crtc; |
393 | struct of_endpoint endpoint; | |
394 | struct device_node *port; | |
395 | int ret; | |
396 | ||
397 | if (!node || !crtc) | |
398 | return -EINVAL; | |
399 | ||
ecaa4902 | 400 | for_each_endpoint_of_node(node, ep) { |
2048e328 MY |
401 | port = of_graph_get_remote_port(ep); |
402 | of_node_put(port); | |
403 | if (port == crtc->port) { | |
404 | ret = of_graph_parse_endpoint(ep, &endpoint); | |
ecaa4902 | 405 | of_node_put(ep); |
2048e328 MY |
406 | return ret ?: endpoint.id; |
407 | } | |
ecaa4902 | 408 | } |
2048e328 MY |
409 | |
410 | return -EINVAL; | |
411 | } | |
f66a1627 | 412 | EXPORT_SYMBOL_GPL(rockchip_drm_encoder_get_mux_id); |
2048e328 MY |
413 | |
414 | static int compare_of(struct device *dev, void *data) | |
415 | { | |
416 | struct device_node *np = data; | |
417 | ||
418 | return dev->of_node == np; | |
419 | } | |
420 | ||
5bad7d29 MY |
421 | static void rockchip_add_endpoints(struct device *dev, |
422 | struct component_match **match, | |
423 | struct device_node *port) | |
424 | { | |
425 | struct device_node *ep, *remote; | |
426 | ||
427 | for_each_child_of_node(port, ep) { | |
428 | remote = of_graph_get_remote_port_parent(ep); | |
429 | if (!remote || !of_device_is_available(remote)) { | |
430 | of_node_put(remote); | |
431 | continue; | |
432 | } else if (!of_device_is_available(remote->parent)) { | |
433 | dev_warn(dev, "parent device of %s is not available\n", | |
434 | remote->full_name); | |
435 | of_node_put(remote); | |
436 | continue; | |
437 | } | |
438 | ||
439 | component_match_add(dev, match, compare_of, remote); | |
440 | of_node_put(remote); | |
441 | } | |
442 | } | |
443 | ||
2048e328 MY |
444 | static int rockchip_drm_bind(struct device *dev) |
445 | { | |
446 | struct drm_device *drm; | |
447 | int ret; | |
448 | ||
449 | drm = drm_dev_alloc(&rockchip_drm_driver, dev); | |
450 | if (!drm) | |
451 | return -ENOMEM; | |
452 | ||
453 | ret = drm_dev_set_unique(drm, "%s", dev_name(dev)); | |
454 | if (ret) | |
455 | goto err_free; | |
456 | ||
457 | ret = drm_dev_register(drm, 0); | |
458 | if (ret) | |
459 | goto err_free; | |
460 | ||
461 | dev_set_drvdata(dev, drm); | |
462 | ||
463 | return 0; | |
464 | ||
465 | err_free: | |
466 | drm_dev_unref(drm); | |
467 | return ret; | |
468 | } | |
469 | ||
470 | static void rockchip_drm_unbind(struct device *dev) | |
471 | { | |
472 | struct drm_device *drm = dev_get_drvdata(dev); | |
473 | ||
474 | drm_dev_unregister(drm); | |
475 | drm_dev_unref(drm); | |
476 | dev_set_drvdata(dev, NULL); | |
477 | } | |
478 | ||
479 | static const struct component_master_ops rockchip_drm_ops = { | |
480 | .bind = rockchip_drm_bind, | |
481 | .unbind = rockchip_drm_unbind, | |
482 | }; | |
483 | ||
484 | static int rockchip_drm_platform_probe(struct platform_device *pdev) | |
485 | { | |
5bad7d29 MY |
486 | struct device *dev = &pdev->dev; |
487 | struct component_match *match = NULL; | |
488 | struct device_node *np = dev->of_node; | |
489 | struct device_node *port; | |
490 | int i; | |
2048e328 | 491 | |
5bad7d29 | 492 | if (!np) |
2048e328 | 493 | return -ENODEV; |
5bad7d29 MY |
494 | /* |
495 | * Bind the crtc ports first, so that | |
496 | * drm_of_find_possible_crtcs called from encoder .bind callbacks | |
497 | * works as expected. | |
498 | */ | |
499 | for (i = 0;; i++) { | |
500 | port = of_parse_phandle(np, "ports", i); | |
501 | if (!port) | |
502 | break; | |
503 | ||
504 | if (!of_device_is_available(port->parent)) { | |
505 | of_node_put(port); | |
506 | continue; | |
507 | } | |
2048e328 | 508 | |
5bad7d29 MY |
509 | component_match_add(dev, &match, compare_of, port->parent); |
510 | of_node_put(port); | |
511 | } | |
512 | ||
513 | if (i == 0) { | |
514 | dev_err(dev, "missing 'ports' property\n"); | |
515 | return -ENODEV; | |
516 | } | |
517 | ||
518 | if (!match) { | |
519 | dev_err(dev, "No available vop found for display-subsystem.\n"); | |
520 | return -ENODEV; | |
521 | } | |
522 | /* | |
523 | * For each bound crtc, bind the encoders attached to its | |
524 | * remote endpoint. | |
525 | */ | |
526 | for (i = 0;; i++) { | |
527 | port = of_parse_phandle(np, "ports", i); | |
528 | if (!port) | |
529 | break; | |
530 | ||
531 | if (!of_device_is_available(port->parent)) { | |
532 | of_node_put(port); | |
533 | continue; | |
534 | } | |
535 | ||
536 | rockchip_add_endpoints(dev, &match, port); | |
537 | of_node_put(port); | |
538 | } | |
539 | ||
540 | return component_master_add_with_match(dev, &rockchip_drm_ops, match); | |
2048e328 MY |
541 | } |
542 | ||
543 | static int rockchip_drm_platform_remove(struct platform_device *pdev) | |
544 | { | |
545 | component_master_del(&pdev->dev, &rockchip_drm_ops); | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | static const struct of_device_id rockchip_drm_dt_ids[] = { | |
551 | { .compatible = "rockchip,display-subsystem", }, | |
552 | { /* sentinel */ }, | |
553 | }; | |
554 | MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids); | |
555 | ||
556 | static struct platform_driver rockchip_drm_platform_driver = { | |
557 | .probe = rockchip_drm_platform_probe, | |
558 | .remove = rockchip_drm_platform_remove, | |
559 | .driver = { | |
2048e328 MY |
560 | .name = "rockchip-drm", |
561 | .of_match_table = rockchip_drm_dt_ids, | |
562 | .pm = &rockchip_drm_pm_ops, | |
563 | }, | |
564 | }; | |
565 | ||
566 | module_platform_driver(rockchip_drm_platform_driver); | |
567 | ||
568 | MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>"); | |
569 | MODULE_DESCRIPTION("ROCKCHIP DRM Driver"); | |
570 | MODULE_LICENSE("GPL v2"); |