2 * Hisilicon Kirin SoCs drm master driver
4 * Copyright (c) 2016 Linaro Limited.
5 * Copyright (c) 2014-2016 Hisilicon Limited.
8 * Xinliang Liu <z.liuxinliang@hisilicon.com>
9 * Xinliang Liu <xinliang.liu@linaro.org>
10 * Xinwei Kong <kong.kongxinwei@hisilicon.com>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
18 #include <linux/of_platform.h>
19 #include <linux/component.h>
20 #include <linux/of_graph.h>
23 #include <drm/drm_gem_cma_helper.h>
24 #include <drm/drm_fb_cma_helper.h>
25 #include <drm/drm_gem_framebuffer_helper.h>
26 #include <drm/drm_atomic_helper.h>
27 #include <drm/drm_crtc_helper.h>
28 #include <drm/drm_of.h>
30 #include "kirin_drm_drv.h"
32 static struct kirin_dc_ops *dc_ops;
34 static int kirin_drm_kms_cleanup(struct drm_device *dev)
36 struct kirin_drm_private *priv = dev->dev_private;
39 drm_fbdev_cma_fini(priv->fbdev);
43 drm_kms_helper_poll_fini(dev);
44 dc_ops->cleanup(to_platform_device(dev->dev));
45 drm_mode_config_cleanup(dev);
46 devm_kfree(dev->dev, priv);
47 dev->dev_private = NULL;
52 static void kirin_fbdev_output_poll_changed(struct drm_device *dev)
54 struct kirin_drm_private *priv = dev->dev_private;
56 drm_fbdev_cma_hotplug_event(priv->fbdev);
59 static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
60 .fb_create = drm_gem_fb_create,
61 .output_poll_changed = kirin_fbdev_output_poll_changed,
62 .atomic_check = drm_atomic_helper_check,
63 .atomic_commit = drm_atomic_helper_commit,
66 static void kirin_drm_mode_config_init(struct drm_device *dev)
68 dev->mode_config.min_width = 0;
69 dev->mode_config.min_height = 0;
71 dev->mode_config.max_width = 2048;
72 dev->mode_config.max_height = 2048;
74 dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
77 static int kirin_drm_kms_init(struct drm_device *dev)
79 struct kirin_drm_private *priv;
82 priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
86 dev->dev_private = priv;
87 dev_set_drvdata(dev->dev, dev);
89 /* dev->mode_config initialization */
90 drm_mode_config_init(dev);
91 kirin_drm_mode_config_init(dev);
93 /* display controller init */
94 ret = dc_ops->init(to_platform_device(dev->dev));
96 goto err_mode_config_cleanup;
98 /* bind and init sub drivers */
99 ret = component_bind_all(dev->dev, dev);
101 DRM_ERROR("failed to bind all component.\n");
106 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
108 DRM_ERROR("failed to initialize vblank.\n");
111 /* with irq_enabled = true, we can use the vblank feature. */
112 dev->irq_enabled = true;
114 /* reset all the states of crtc/plane/encoder/connector */
115 drm_mode_config_reset(dev);
117 /* init kms poll for handling hpd */
118 drm_kms_helper_poll_init(dev);
120 priv->fbdev = drm_fbdev_cma_init(dev, 32,
121 dev->mode_config.num_connector);
123 if (IS_ERR(priv->fbdev)) {
124 DRM_ERROR("failed to initialize fbdev.\n");
125 ret = PTR_ERR(priv->fbdev);
126 goto err_cleanup_poll;
131 drm_kms_helper_poll_fini(dev);
133 component_unbind_all(dev->dev, dev);
135 dc_ops->cleanup(to_platform_device(dev->dev));
136 err_mode_config_cleanup:
137 drm_mode_config_cleanup(dev);
138 devm_kfree(dev->dev, priv);
139 dev->dev_private = NULL;
144 DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
146 static int kirin_gem_cma_dumb_create(struct drm_file *file,
147 struct drm_device *dev,
148 struct drm_mode_create_dumb *args)
150 return drm_gem_cma_dumb_create_internal(file, dev, args);
153 static struct drm_driver kirin_drm_driver = {
154 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
156 .fops = &kirin_drm_fops,
158 .gem_free_object_unlocked = drm_gem_cma_free_object,
159 .gem_vm_ops = &drm_gem_cma_vm_ops,
160 .dumb_create = kirin_gem_cma_dumb_create,
162 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
163 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
164 .gem_prime_export = drm_gem_prime_export,
165 .gem_prime_import = drm_gem_prime_import,
166 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
167 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
168 .gem_prime_vmap = drm_gem_cma_prime_vmap,
169 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
170 .gem_prime_mmap = drm_gem_cma_prime_mmap,
173 .desc = "Hisilicon Kirin SoCs' DRM Driver",
179 static int compare_of(struct device *dev, void *data)
181 return dev->of_node == data;
184 static int kirin_drm_bind(struct device *dev)
186 struct drm_driver *driver = &kirin_drm_driver;
187 struct drm_device *drm_dev;
190 drm_dev = drm_dev_alloc(driver, dev);
192 return PTR_ERR(drm_dev);
194 ret = kirin_drm_kms_init(drm_dev);
196 goto err_drm_dev_unref;
198 ret = drm_dev_register(drm_dev, 0);
200 goto err_kms_cleanup;
205 kirin_drm_kms_cleanup(drm_dev);
207 drm_dev_unref(drm_dev);
212 static void kirin_drm_unbind(struct device *dev)
214 struct drm_device *drm_dev = dev_get_drvdata(dev);
216 drm_dev_unregister(drm_dev);
217 kirin_drm_kms_cleanup(drm_dev);
218 drm_dev_unref(drm_dev);
221 static const struct component_master_ops kirin_drm_ops = {
222 .bind = kirin_drm_bind,
223 .unbind = kirin_drm_unbind,
226 static int kirin_drm_platform_probe(struct platform_device *pdev)
228 struct device *dev = &pdev->dev;
229 struct device_node *np = dev->of_node;
230 struct component_match *match = NULL;
231 struct device_node *remote;
233 dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
235 DRM_ERROR("failed to get dt id data\n");
239 remote = of_graph_get_remote_node(np, 0, 0);
243 drm_of_component_match_add(dev, &match, compare_of, remote);
246 return component_master_add_with_match(dev, &kirin_drm_ops, match);
251 static int kirin_drm_platform_remove(struct platform_device *pdev)
253 component_master_del(&pdev->dev, &kirin_drm_ops);
258 static const struct of_device_id kirin_drm_dt_ids[] = {
259 { .compatible = "hisilicon,hi6220-ade",
264 MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
266 static struct platform_driver kirin_drm_platform_driver = {
267 .probe = kirin_drm_platform_probe,
268 .remove = kirin_drm_platform_remove,
271 .of_match_table = kirin_drm_dt_ids,
275 module_platform_driver(kirin_drm_platform_driver);
277 MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
278 MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
279 MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
280 MODULE_DESCRIPTION("hisilicon Kirin SoCs' DRM master driver");
281 MODULE_LICENSE("GPL v2");