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14#include <linux/of_platform.h>
15#include <linux/component.h>
16#include <linux/of_graph.h>
17
18#include <drm/drmP.h>
19#include <drm/drm_atomic_helper.h>
20#include <drm/drm_fb_cma_helper.h>
21#include <drm/drm_fb_helper.h>
22#include <drm/drm_gem_cma_helper.h>
23#include <drm/drm_gem_framebuffer_helper.h>
24#include <drm/drm_of.h>
25#include <drm/drm_probe_helper.h>
26
27#include "kirin_drm_drv.h"
28
29static struct kirin_dc_ops *dc_ops;
30
31static int kirin_drm_kms_cleanup(struct drm_device *dev)
32{
33 drm_kms_helper_poll_fini(dev);
34 dc_ops->cleanup(to_platform_device(dev->dev));
35 drm_mode_config_cleanup(dev);
36
37 return 0;
38}
39
40static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
41 .fb_create = drm_gem_fb_create,
42 .atomic_check = drm_atomic_helper_check,
43 .atomic_commit = drm_atomic_helper_commit,
44};
45
46static void kirin_drm_mode_config_init(struct drm_device *dev)
47{
48 dev->mode_config.min_width = 0;
49 dev->mode_config.min_height = 0;
50
51 dev->mode_config.max_width = 2048;
52 dev->mode_config.max_height = 2048;
53
54 dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
55}
56
57static int kirin_drm_kms_init(struct drm_device *dev)
58{
59 int ret;
60
61 dev_set_drvdata(dev->dev, dev);
62
63
64 drm_mode_config_init(dev);
65 kirin_drm_mode_config_init(dev);
66
67
68 ret = dc_ops->init(to_platform_device(dev->dev));
69 if (ret)
70 goto err_mode_config_cleanup;
71
72
73 ret = component_bind_all(dev->dev, dev);
74 if (ret) {
75 DRM_ERROR("failed to bind all component.\n");
76 goto err_dc_cleanup;
77 }
78
79
80 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
81 if (ret) {
82 DRM_ERROR("failed to initialize vblank.\n");
83 goto err_unbind_all;
84 }
85
86 dev->irq_enabled = true;
87
88
89 drm_mode_config_reset(dev);
90
91
92 drm_kms_helper_poll_init(dev);
93
94 return 0;
95
96err_unbind_all:
97 component_unbind_all(dev->dev, dev);
98err_dc_cleanup:
99 dc_ops->cleanup(to_platform_device(dev->dev));
100err_mode_config_cleanup:
101 drm_mode_config_cleanup(dev);
102
103 return ret;
104}
105
106DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
107
108static int kirin_gem_cma_dumb_create(struct drm_file *file,
109 struct drm_device *dev,
110 struct drm_mode_create_dumb *args)
111{
112 return drm_gem_cma_dumb_create_internal(file, dev, args);
113}
114
115static struct drm_driver kirin_drm_driver = {
116 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
117 DRIVER_ATOMIC,
118 .fops = &kirin_drm_fops,
119
120 .gem_free_object_unlocked = drm_gem_cma_free_object,
121 .gem_vm_ops = &drm_gem_cma_vm_ops,
122 .dumb_create = kirin_gem_cma_dumb_create,
123
124 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
125 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
126 .gem_prime_export = drm_gem_prime_export,
127 .gem_prime_import = drm_gem_prime_import,
128 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
129 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
130 .gem_prime_vmap = drm_gem_cma_prime_vmap,
131 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
132 .gem_prime_mmap = drm_gem_cma_prime_mmap,
133
134 .name = "kirin",
135 .desc = "Hisilicon Kirin SoCs' DRM Driver",
136 .date = "20150718",
137 .major = 1,
138 .minor = 0,
139};
140
141static int compare_of(struct device *dev, void *data)
142{
143 return dev->of_node == data;
144}
145
146static int kirin_drm_bind(struct device *dev)
147{
148 struct drm_driver *driver = &kirin_drm_driver;
149 struct drm_device *drm_dev;
150 int ret;
151
152 drm_dev = drm_dev_alloc(driver, dev);
153 if (IS_ERR(drm_dev))
154 return PTR_ERR(drm_dev);
155
156 ret = kirin_drm_kms_init(drm_dev);
157 if (ret)
158 goto err_drm_dev_put;
159
160 ret = drm_dev_register(drm_dev, 0);
161 if (ret)
162 goto err_kms_cleanup;
163
164 drm_fbdev_generic_setup(drm_dev, 32);
165
166 return 0;
167
168err_kms_cleanup:
169 kirin_drm_kms_cleanup(drm_dev);
170err_drm_dev_put:
171 drm_dev_put(drm_dev);
172
173 return ret;
174}
175
176static void kirin_drm_unbind(struct device *dev)
177{
178 struct drm_device *drm_dev = dev_get_drvdata(dev);
179
180 drm_dev_unregister(drm_dev);
181 kirin_drm_kms_cleanup(drm_dev);
182 drm_dev_put(drm_dev);
183}
184
185static const struct component_master_ops kirin_drm_ops = {
186 .bind = kirin_drm_bind,
187 .unbind = kirin_drm_unbind,
188};
189
190static int kirin_drm_platform_probe(struct platform_device *pdev)
191{
192 struct device *dev = &pdev->dev;
193 struct device_node *np = dev->of_node;
194 struct component_match *match = NULL;
195 struct device_node *remote;
196
197 dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
198 if (!dc_ops) {
199 DRM_ERROR("failed to get dt id data\n");
200 return -EINVAL;
201 }
202
203 remote = of_graph_get_remote_node(np, 0, 0);
204 if (!remote)
205 return -ENODEV;
206
207 drm_of_component_match_add(dev, &match, compare_of, remote);
208 of_node_put(remote);
209
210 return component_master_add_with_match(dev, &kirin_drm_ops, match);
211
212 return 0;
213}
214
215static int kirin_drm_platform_remove(struct platform_device *pdev)
216{
217 component_master_del(&pdev->dev, &kirin_drm_ops);
218 dc_ops = NULL;
219 return 0;
220}
221
222static const struct of_device_id kirin_drm_dt_ids[] = {
223 { .compatible = "hisilicon,hi6220-ade",
224 .data = &ade_dc_ops,
225 },
226 { },
227};
228MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
229
230static struct platform_driver kirin_drm_platform_driver = {
231 .probe = kirin_drm_platform_probe,
232 .remove = kirin_drm_platform_remove,
233 .driver = {
234 .name = "kirin-drm",
235 .of_match_table = kirin_drm_dt_ids,
236 },
237};
238
239module_platform_driver(kirin_drm_platform_driver);
240
241MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
242MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
243MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
244MODULE_DESCRIPTION("hisilicon Kirin SoCs' DRM master driver");
245MODULE_LICENSE("GPL v2");
246
