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18#include <linux/of_platform.h>
19#include <linux/component.h>
20#include <linux/of_graph.h>
21
22#include <drm/drmP.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>
29
30#include "kirin_drm_drv.h"
31
32static struct kirin_dc_ops *dc_ops;
33
34static int kirin_drm_kms_cleanup(struct drm_device *dev)
35{
36 struct kirin_drm_private *priv = dev->dev_private;
37
38 if (priv->fbdev) {
39 drm_fbdev_cma_fini(priv->fbdev);
40 priv->fbdev = NULL;
41 }
42
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;
48
49 return 0;
50}
51
52static void kirin_fbdev_output_poll_changed(struct drm_device *dev)
53{
54 struct kirin_drm_private *priv = dev->dev_private;
55
56 drm_fbdev_cma_hotplug_event(priv->fbdev);
57}
58
59static 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,
64};
65
66static void kirin_drm_mode_config_init(struct drm_device *dev)
67{
68 dev->mode_config.min_width = 0;
69 dev->mode_config.min_height = 0;
70
71 dev->mode_config.max_width = 2048;
72 dev->mode_config.max_height = 2048;
73
74 dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
75}
76
77static int kirin_drm_kms_init(struct drm_device *dev)
78{
79 struct kirin_drm_private *priv;
80 int ret;
81
82 priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
83 if (!priv)
84 return -ENOMEM;
85
86 dev->dev_private = priv;
87 dev_set_drvdata(dev->dev, dev);
88
89
90 drm_mode_config_init(dev);
91 kirin_drm_mode_config_init(dev);
92
93
94 ret = dc_ops->init(to_platform_device(dev->dev));
95 if (ret)
96 goto err_mode_config_cleanup;
97
98
99 ret = component_bind_all(dev->dev, dev);
100 if (ret) {
101 DRM_ERROR("failed to bind all component.\n");
102 goto err_dc_cleanup;
103 }
104
105
106 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
107 if (ret) {
108 DRM_ERROR("failed to initialize vblank.\n");
109 goto err_unbind_all;
110 }
111
112 dev->irq_enabled = true;
113
114
115 drm_mode_config_reset(dev);
116
117
118 drm_kms_helper_poll_init(dev);
119
120 priv->fbdev = drm_fbdev_cma_init(dev, 32,
121 dev->mode_config.num_connector);
122
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;
127 }
128 return 0;
129
130err_cleanup_poll:
131 drm_kms_helper_poll_fini(dev);
132err_unbind_all:
133 component_unbind_all(dev->dev, dev);
134err_dc_cleanup:
135 dc_ops->cleanup(to_platform_device(dev->dev));
136err_mode_config_cleanup:
137 drm_mode_config_cleanup(dev);
138 devm_kfree(dev->dev, priv);
139 dev->dev_private = NULL;
140
141 return ret;
142}
143
144DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
145
146static int kirin_gem_cma_dumb_create(struct drm_file *file,
147 struct drm_device *dev,
148 struct drm_mode_create_dumb *args)
149{
150 return drm_gem_cma_dumb_create_internal(file, dev, args);
151}
152
153static struct drm_driver kirin_drm_driver = {
154 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
155 DRIVER_ATOMIC,
156 .fops = &kirin_drm_fops,
157
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,
161
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,
171
172 .name = "kirin",
173 .desc = "Hisilicon Kirin SoCs' DRM Driver",
174 .date = "20150718",
175 .major = 1,
176 .minor = 0,
177};
178
179static int compare_of(struct device *dev, void *data)
180{
181 return dev->of_node == data;
182}
183
184static int kirin_drm_bind(struct device *dev)
185{
186 struct drm_driver *driver = &kirin_drm_driver;
187 struct drm_device *drm_dev;
188 int ret;
189
190 drm_dev = drm_dev_alloc(driver, dev);
191 if (IS_ERR(drm_dev))
192 return PTR_ERR(drm_dev);
193
194 ret = kirin_drm_kms_init(drm_dev);
195 if (ret)
196 goto err_drm_dev_unref;
197
198 ret = drm_dev_register(drm_dev, 0);
199 if (ret)
200 goto err_kms_cleanup;
201
202 return 0;
203
204err_kms_cleanup:
205 kirin_drm_kms_cleanup(drm_dev);
206err_drm_dev_unref:
207 drm_dev_unref(drm_dev);
208
209 return ret;
210}
211
212static void kirin_drm_unbind(struct device *dev)
213{
214 struct drm_device *drm_dev = dev_get_drvdata(dev);
215
216 drm_dev_unregister(drm_dev);
217 kirin_drm_kms_cleanup(drm_dev);
218 drm_dev_unref(drm_dev);
219}
220
221static const struct component_master_ops kirin_drm_ops = {
222 .bind = kirin_drm_bind,
223 .unbind = kirin_drm_unbind,
224};
225
226static int kirin_drm_platform_probe(struct platform_device *pdev)
227{
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;
232
233 dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
234 if (!dc_ops) {
235 DRM_ERROR("failed to get dt id data\n");
236 return -EINVAL;
237 }
238
239 remote = of_graph_get_remote_node(np, 0, 0);
240 if (!remote)
241 return -ENODEV;
242
243 drm_of_component_match_add(dev, &match, compare_of, remote);
244 of_node_put(remote);
245
246 return component_master_add_with_match(dev, &kirin_drm_ops, match);
247
248 return 0;
249}
250
251static int kirin_drm_platform_remove(struct platform_device *pdev)
252{
253 component_master_del(&pdev->dev, &kirin_drm_ops);
254 dc_ops = NULL;
255 return 0;
256}
257
258static const struct of_device_id kirin_drm_dt_ids[] = {
259 { .compatible = "hisilicon,hi6220-ade",
260 .data = &ade_dc_ops,
261 },
262 { },
263};
264MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
265
266static struct platform_driver kirin_drm_platform_driver = {
267 .probe = kirin_drm_platform_probe,
268 .remove = kirin_drm_platform_remove,
269 .driver = {
270 .name = "kirin-drm",
271 .of_match_table = kirin_drm_dt_ids,
272 },
273};
274
275module_platform_driver(kirin_drm_platform_driver);
276
277MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
278MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
279MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
280MODULE_DESCRIPTION("hisilicon Kirin SoCs' DRM master driver");
281MODULE_LICENSE("GPL v2");
282
