bna: remove oper_state_cbfn from struct bna_rxf
[linux/fpc-iii.git] / drivers / gpu / drm / rockchip / rockchip_drm_drv.c
blob3962176ee71325ca4434fa34643f117c58b2d217
1 /*
2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author:Mark Yao <mark.yao@rock-chips.com>
5 * based on exynos_drm_drv.c
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.
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.
17 #include <asm/dma-iommu.h>
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>
24 #include <linux/of_graph.h>
25 #include <linux/component.h>
27 #include "rockchip_drm_drv.h"
28 #include "rockchip_drm_fb.h"
29 #include "rockchip_drm_fbdev.h"
30 #include "rockchip_drm_gem.h"
32 #define DRIVER_NAME "rockchip"
33 #define DRIVER_DESC "RockChip Soc DRM"
34 #define DRIVER_DATE "20140818"
35 #define DRIVER_MAJOR 1
36 #define DRIVER_MINOR 0
39 * Attach a (component) device to the shared drm dma mapping from master drm
40 * device. This is used by the VOPs to map GEM buffers to a common DMA
41 * mapping.
43 int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
44 struct device *dev)
46 struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping;
47 int ret;
49 ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
50 if (ret)
51 return ret;
53 dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
55 return arm_iommu_attach_device(dev, mapping);
57 EXPORT_SYMBOL_GPL(rockchip_drm_dma_attach_device);
59 void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
60 struct device *dev)
62 arm_iommu_detach_device(dev);
64 EXPORT_SYMBOL_GPL(rockchip_drm_dma_detach_device);
66 int rockchip_register_crtc_funcs(struct drm_device *dev,
67 const struct rockchip_crtc_funcs *crtc_funcs,
68 int pipe)
70 struct rockchip_drm_private *priv = dev->dev_private;
72 if (pipe > ROCKCHIP_MAX_CRTC)
73 return -EINVAL;
75 priv->crtc_funcs[pipe] = crtc_funcs;
77 return 0;
79 EXPORT_SYMBOL_GPL(rockchip_register_crtc_funcs);
81 void rockchip_unregister_crtc_funcs(struct drm_device *dev, int pipe)
83 struct rockchip_drm_private *priv = dev->dev_private;
85 if (pipe > ROCKCHIP_MAX_CRTC)
86 return;
88 priv->crtc_funcs[pipe] = NULL;
90 EXPORT_SYMBOL_GPL(rockchip_unregister_crtc_funcs);
92 static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm,
93 int pipe)
95 struct drm_crtc *crtc;
96 int i = 0;
98 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
99 if (i++ == pipe)
100 return crtc;
102 return NULL;
105 static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
107 struct rockchip_drm_private *priv = dev->dev_private;
108 struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
110 if (crtc && priv->crtc_funcs[pipe] &&
111 priv->crtc_funcs[pipe]->enable_vblank)
112 return priv->crtc_funcs[pipe]->enable_vblank(crtc);
114 return 0;
117 static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
119 struct rockchip_drm_private *priv = dev->dev_private;
120 struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
122 if (crtc && priv->crtc_funcs[pipe] &&
123 priv->crtc_funcs[pipe]->enable_vblank)
124 priv->crtc_funcs[pipe]->disable_vblank(crtc);
127 static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
129 struct rockchip_drm_private *private;
130 struct dma_iommu_mapping *mapping;
131 struct device *dev = drm_dev->dev;
132 struct drm_connector *connector;
133 int ret;
135 private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
136 if (!private)
137 return -ENOMEM;
139 drm_dev->dev_private = private;
141 drm_mode_config_init(drm_dev);
143 rockchip_drm_mode_config_init(drm_dev);
145 dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
146 GFP_KERNEL);
147 if (!dev->dma_parms) {
148 ret = -ENOMEM;
149 goto err_config_cleanup;
152 /* TODO(djkurtz): fetch the mapping start/size from somewhere */
153 mapping = arm_iommu_create_mapping(&platform_bus_type, 0x00000000,
154 SZ_2G);
155 if (IS_ERR(mapping)) {
156 ret = PTR_ERR(mapping);
157 goto err_config_cleanup;
160 ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
161 if (ret)
162 goto err_release_mapping;
164 dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
166 ret = arm_iommu_attach_device(dev, mapping);
167 if (ret)
168 goto err_release_mapping;
170 /* Try to bind all sub drivers. */
171 ret = component_bind_all(dev, drm_dev);
172 if (ret)
173 goto err_detach_device;
176 * All components are now added, we can publish the connector sysfs
177 * entries to userspace. This will generate hotplug events and so
178 * userspace will expect to be able to access DRM at this point.
180 list_for_each_entry(connector, &drm_dev->mode_config.connector_list,
181 head) {
182 ret = drm_connector_register(connector);
183 if (ret) {
184 dev_err(drm_dev->dev,
185 "[CONNECTOR:%d:%s] drm_connector_register failed: %d\n",
186 connector->base.id,
187 connector->name, ret);
188 goto err_unbind;
192 /* init kms poll for handling hpd */
193 drm_kms_helper_poll_init(drm_dev);
196 * enable drm irq mode.
197 * - with irq_enabled = true, we can use the vblank feature.
199 drm_dev->irq_enabled = true;
201 ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC);
202 if (ret)
203 goto err_kms_helper_poll_fini;
206 * with vblank_disable_allowed = true, vblank interrupt will be disabled
207 * by drm timer once a current process gives up ownership of
208 * vblank event.(after drm_vblank_put function is called)
210 drm_dev->vblank_disable_allowed = true;
212 ret = rockchip_drm_fbdev_init(drm_dev);
213 if (ret)
214 goto err_vblank_cleanup;
216 return 0;
217 err_vblank_cleanup:
218 drm_vblank_cleanup(drm_dev);
219 err_kms_helper_poll_fini:
220 drm_kms_helper_poll_fini(drm_dev);
221 err_unbind:
222 component_unbind_all(dev, drm_dev);
223 err_detach_device:
224 arm_iommu_detach_device(dev);
225 err_release_mapping:
226 arm_iommu_release_mapping(dev->archdata.mapping);
227 err_config_cleanup:
228 drm_mode_config_cleanup(drm_dev);
229 drm_dev->dev_private = NULL;
230 return ret;
233 static int rockchip_drm_unload(struct drm_device *drm_dev)
235 struct device *dev = drm_dev->dev;
237 rockchip_drm_fbdev_fini(drm_dev);
238 drm_vblank_cleanup(drm_dev);
239 drm_kms_helper_poll_fini(drm_dev);
240 component_unbind_all(dev, drm_dev);
241 arm_iommu_detach_device(dev);
242 arm_iommu_release_mapping(dev->archdata.mapping);
243 drm_mode_config_cleanup(drm_dev);
244 drm_dev->dev_private = NULL;
246 return 0;
249 void rockchip_drm_lastclose(struct drm_device *dev)
251 struct rockchip_drm_private *priv = dev->dev_private;
253 drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper);
256 static const struct file_operations rockchip_drm_driver_fops = {
257 .owner = THIS_MODULE,
258 .open = drm_open,
259 .mmap = rockchip_gem_mmap,
260 .poll = drm_poll,
261 .read = drm_read,
262 .unlocked_ioctl = drm_ioctl,
263 #ifdef CONFIG_COMPAT
264 .compat_ioctl = drm_compat_ioctl,
265 #endif
266 .release = drm_release,
269 const struct vm_operations_struct rockchip_drm_vm_ops = {
270 .open = drm_gem_vm_open,
271 .close = drm_gem_vm_close,
274 static struct drm_driver rockchip_drm_driver = {
275 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
276 .load = rockchip_drm_load,
277 .unload = rockchip_drm_unload,
278 .lastclose = rockchip_drm_lastclose,
279 .get_vblank_counter = drm_vblank_count,
280 .enable_vblank = rockchip_drm_crtc_enable_vblank,
281 .disable_vblank = rockchip_drm_crtc_disable_vblank,
282 .gem_vm_ops = &rockchip_drm_vm_ops,
283 .gem_free_object = rockchip_gem_free_object,
284 .dumb_create = rockchip_gem_dumb_create,
285 .dumb_map_offset = rockchip_gem_dumb_map_offset,
286 .dumb_destroy = drm_gem_dumb_destroy,
287 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
288 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
289 .gem_prime_import = drm_gem_prime_import,
290 .gem_prime_export = drm_gem_prime_export,
291 .gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
292 .gem_prime_vmap = rockchip_gem_prime_vmap,
293 .gem_prime_vunmap = rockchip_gem_prime_vunmap,
294 .gem_prime_mmap = rockchip_gem_mmap_buf,
295 .fops = &rockchip_drm_driver_fops,
296 .name = DRIVER_NAME,
297 .desc = DRIVER_DESC,
298 .date = DRIVER_DATE,
299 .major = DRIVER_MAJOR,
300 .minor = DRIVER_MINOR,
303 #ifdef CONFIG_PM_SLEEP
304 static int rockchip_drm_sys_suspend(struct device *dev)
306 struct drm_device *drm = dev_get_drvdata(dev);
307 struct drm_connector *connector;
309 if (!drm)
310 return 0;
312 drm_modeset_lock_all(drm);
313 list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
314 int old_dpms = connector->dpms;
316 if (connector->funcs->dpms)
317 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
319 /* Set the old mode back to the connector for resume */
320 connector->dpms = old_dpms;
322 drm_modeset_unlock_all(drm);
324 return 0;
327 static int rockchip_drm_sys_resume(struct device *dev)
329 struct drm_device *drm = dev_get_drvdata(dev);
330 struct drm_connector *connector;
331 enum drm_connector_status status;
332 bool changed = false;
334 if (!drm)
335 return 0;
337 drm_modeset_lock_all(drm);
338 list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
339 int desired_mode = connector->dpms;
342 * at suspend time, we save dpms to connector->dpms,
343 * restore the old_dpms, and at current time, the connector
344 * dpms status must be DRM_MODE_DPMS_OFF.
346 connector->dpms = DRM_MODE_DPMS_OFF;
349 * If the connector has been disconnected during suspend,
350 * disconnect it from the encoder and leave it off. We'll notify
351 * userspace at the end.
353 if (desired_mode == DRM_MODE_DPMS_ON) {
354 status = connector->funcs->detect(connector, true);
355 if (status == connector_status_disconnected) {
356 connector->encoder = NULL;
357 connector->status = status;
358 changed = true;
359 continue;
362 if (connector->funcs->dpms)
363 connector->funcs->dpms(connector, desired_mode);
365 drm_modeset_unlock_all(drm);
367 drm_helper_resume_force_mode(drm);
369 if (changed)
370 drm_kms_helper_hotplug_event(drm);
372 return 0;
374 #endif
376 static const struct dev_pm_ops rockchip_drm_pm_ops = {
377 SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
378 rockchip_drm_sys_resume)
382 * @node: device tree node containing encoder input ports
383 * @encoder: drm_encoder
385 int rockchip_drm_encoder_get_mux_id(struct device_node *node,
386 struct drm_encoder *encoder)
388 struct device_node *ep;
389 struct drm_crtc *crtc = encoder->crtc;
390 struct of_endpoint endpoint;
391 struct device_node *port;
392 int ret;
394 if (!node || !crtc)
395 return -EINVAL;
397 for_each_endpoint_of_node(node, ep) {
398 port = of_graph_get_remote_port(ep);
399 of_node_put(port);
400 if (port == crtc->port) {
401 ret = of_graph_parse_endpoint(ep, &endpoint);
402 of_node_put(ep);
403 return ret ?: endpoint.id;
407 return -EINVAL;
409 EXPORT_SYMBOL_GPL(rockchip_drm_encoder_get_mux_id);
411 static int compare_of(struct device *dev, void *data)
413 struct device_node *np = data;
415 return dev->of_node == np;
418 static void rockchip_add_endpoints(struct device *dev,
419 struct component_match **match,
420 struct device_node *port)
422 struct device_node *ep, *remote;
424 for_each_child_of_node(port, ep) {
425 remote = of_graph_get_remote_port_parent(ep);
426 if (!remote || !of_device_is_available(remote)) {
427 of_node_put(remote);
428 continue;
429 } else if (!of_device_is_available(remote->parent)) {
430 dev_warn(dev, "parent device of %s is not available\n",
431 remote->full_name);
432 of_node_put(remote);
433 continue;
436 component_match_add(dev, match, compare_of, remote);
437 of_node_put(remote);
441 static int rockchip_drm_bind(struct device *dev)
443 struct drm_device *drm;
444 int ret;
446 drm = drm_dev_alloc(&rockchip_drm_driver, dev);
447 if (!drm)
448 return -ENOMEM;
450 ret = drm_dev_set_unique(drm, "%s", dev_name(dev));
451 if (ret)
452 goto err_free;
454 ret = drm_dev_register(drm, 0);
455 if (ret)
456 goto err_free;
458 dev_set_drvdata(dev, drm);
460 return 0;
462 err_free:
463 drm_dev_unref(drm);
464 return ret;
467 static void rockchip_drm_unbind(struct device *dev)
469 struct drm_device *drm = dev_get_drvdata(dev);
471 drm_dev_unregister(drm);
472 drm_dev_unref(drm);
473 dev_set_drvdata(dev, NULL);
476 static const struct component_master_ops rockchip_drm_ops = {
477 .bind = rockchip_drm_bind,
478 .unbind = rockchip_drm_unbind,
481 static int rockchip_drm_platform_probe(struct platform_device *pdev)
483 struct device *dev = &pdev->dev;
484 struct component_match *match = NULL;
485 struct device_node *np = dev->of_node;
486 struct device_node *port;
487 int i;
489 if (!np)
490 return -ENODEV;
492 * Bind the crtc ports first, so that
493 * drm_of_find_possible_crtcs called from encoder .bind callbacks
494 * works as expected.
496 for (i = 0;; i++) {
497 port = of_parse_phandle(np, "ports", i);
498 if (!port)
499 break;
501 if (!of_device_is_available(port->parent)) {
502 of_node_put(port);
503 continue;
506 component_match_add(dev, &match, compare_of, port->parent);
507 of_node_put(port);
510 if (i == 0) {
511 dev_err(dev, "missing 'ports' property\n");
512 return -ENODEV;
515 if (!match) {
516 dev_err(dev, "No available vop found for display-subsystem.\n");
517 return -ENODEV;
520 * For each bound crtc, bind the encoders attached to its
521 * remote endpoint.
523 for (i = 0;; i++) {
524 port = of_parse_phandle(np, "ports", i);
525 if (!port)
526 break;
528 if (!of_device_is_available(port->parent)) {
529 of_node_put(port);
530 continue;
533 rockchip_add_endpoints(dev, &match, port);
534 of_node_put(port);
537 return component_master_add_with_match(dev, &rockchip_drm_ops, match);
540 static int rockchip_drm_platform_remove(struct platform_device *pdev)
542 component_master_del(&pdev->dev, &rockchip_drm_ops);
544 return 0;
547 static const struct of_device_id rockchip_drm_dt_ids[] = {
548 { .compatible = "rockchip,display-subsystem", },
549 { /* sentinel */ },
551 MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);
553 static struct platform_driver rockchip_drm_platform_driver = {
554 .probe = rockchip_drm_platform_probe,
555 .remove = rockchip_drm_platform_remove,
556 .driver = {
557 .owner = THIS_MODULE,
558 .name = "rockchip-drm",
559 .of_match_table = rockchip_drm_dt_ids,
560 .pm = &rockchip_drm_pm_ops,
564 module_platform_driver(rockchip_drm_platform_driver);
566 MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
567 MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
568 MODULE_LICENSE("GPL v2");