This source file includes following definitions.
- msm_dsi_get_encoder
- dsi_get_phy
- dsi_destroy
- dsi_init
- dsi_bind
- dsi_unbind
- dsi_dev_probe
- dsi_dev_remove
- msm_dsi_register
- msm_dsi_unregister
- msm_dsi_modeset_init
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5
6 #include "dsi.h"
7
8 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi)
9 {
10 if (!msm_dsi || !msm_dsi_device_connected(msm_dsi))
11 return NULL;
12
13 return msm_dsi->encoder;
14 }
15
16 static int dsi_get_phy(struct msm_dsi *msm_dsi)
17 {
18 struct platform_device *pdev = msm_dsi->pdev;
19 struct platform_device *phy_pdev;
20 struct device_node *phy_node;
21
22 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
23 if (!phy_node) {
24 DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
25 return -ENXIO;
26 }
27
28 phy_pdev = of_find_device_by_node(phy_node);
29 if (phy_pdev)
30 msm_dsi->phy = platform_get_drvdata(phy_pdev);
31
32 of_node_put(phy_node);
33
34 if (!phy_pdev || !msm_dsi->phy) {
35 DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__);
36 return -EPROBE_DEFER;
37 }
38
39 msm_dsi->phy_dev = get_device(&phy_pdev->dev);
40
41 return 0;
42 }
43
44 static void dsi_destroy(struct msm_dsi *msm_dsi)
45 {
46 if (!msm_dsi)
47 return;
48
49 msm_dsi_manager_unregister(msm_dsi);
50
51 if (msm_dsi->phy_dev) {
52 put_device(msm_dsi->phy_dev);
53 msm_dsi->phy = NULL;
54 msm_dsi->phy_dev = NULL;
55 }
56
57 if (msm_dsi->host) {
58 msm_dsi_host_destroy(msm_dsi->host);
59 msm_dsi->host = NULL;
60 }
61
62 platform_set_drvdata(msm_dsi->pdev, NULL);
63 }
64
65 static struct msm_dsi *dsi_init(struct platform_device *pdev)
66 {
67 struct msm_dsi *msm_dsi;
68 int ret;
69
70 if (!pdev)
71 return ERR_PTR(-ENXIO);
72
73 msm_dsi = devm_kzalloc(&pdev->dev, sizeof(*msm_dsi), GFP_KERNEL);
74 if (!msm_dsi)
75 return ERR_PTR(-ENOMEM);
76 DBG("dsi probed=%p", msm_dsi);
77
78 msm_dsi->id = -1;
79 msm_dsi->pdev = pdev;
80 platform_set_drvdata(pdev, msm_dsi);
81
82
83 ret = msm_dsi_host_init(msm_dsi);
84 if (ret)
85 goto destroy_dsi;
86
87
88 ret = dsi_get_phy(msm_dsi);
89 if (ret)
90 goto destroy_dsi;
91
92
93 ret = msm_dsi_manager_register(msm_dsi);
94 if (ret)
95 goto destroy_dsi;
96
97 return msm_dsi;
98
99 destroy_dsi:
100 dsi_destroy(msm_dsi);
101 return ERR_PTR(ret);
102 }
103
104 static int dsi_bind(struct device *dev, struct device *master, void *data)
105 {
106 struct drm_device *drm = dev_get_drvdata(master);
107 struct msm_drm_private *priv = drm->dev_private;
108 struct platform_device *pdev = to_platform_device(dev);
109 struct msm_dsi *msm_dsi;
110
111 DBG("");
112 msm_dsi = dsi_init(pdev);
113 if (IS_ERR(msm_dsi)) {
114
115 if (PTR_ERR(msm_dsi) == -ENODEV)
116 return 0;
117 else
118 return PTR_ERR(msm_dsi);
119 }
120
121 priv->dsi[msm_dsi->id] = msm_dsi;
122
123 return 0;
124 }
125
126 static void dsi_unbind(struct device *dev, struct device *master,
127 void *data)
128 {
129 struct drm_device *drm = dev_get_drvdata(master);
130 struct msm_drm_private *priv = drm->dev_private;
131 struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
132 int id = msm_dsi->id;
133
134 if (priv->dsi[id]) {
135 dsi_destroy(msm_dsi);
136 priv->dsi[id] = NULL;
137 }
138 }
139
140 static const struct component_ops dsi_ops = {
141 .bind = dsi_bind,
142 .unbind = dsi_unbind,
143 };
144
145 static int dsi_dev_probe(struct platform_device *pdev)
146 {
147 return component_add(&pdev->dev, &dsi_ops);
148 }
149
150 static int dsi_dev_remove(struct platform_device *pdev)
151 {
152 DBG("");
153 component_del(&pdev->dev, &dsi_ops);
154 return 0;
155 }
156
157 static const struct of_device_id dt_match[] = {
158 { .compatible = "qcom,mdss-dsi-ctrl" },
159 {}
160 };
161
162 static const struct dev_pm_ops dsi_pm_ops = {
163 SET_RUNTIME_PM_OPS(msm_dsi_runtime_suspend, msm_dsi_runtime_resume, NULL)
164 };
165
166 static struct platform_driver dsi_driver = {
167 .probe = dsi_dev_probe,
168 .remove = dsi_dev_remove,
169 .driver = {
170 .name = "msm_dsi",
171 .of_match_table = dt_match,
172 .pm = &dsi_pm_ops,
173 },
174 };
175
176 void __init msm_dsi_register(void)
177 {
178 DBG("");
179 msm_dsi_phy_driver_register();
180 platform_driver_register(&dsi_driver);
181 }
182
183 void __exit msm_dsi_unregister(void)
184 {
185 DBG("");
186 msm_dsi_phy_driver_unregister();
187 platform_driver_unregister(&dsi_driver);
188 }
189
190 int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
191 struct drm_encoder *encoder)
192 {
193 struct msm_drm_private *priv;
194 struct drm_bridge *ext_bridge;
195 int ret;
196
197 if (WARN_ON(!encoder) || WARN_ON(!msm_dsi) || WARN_ON(!dev))
198 return -EINVAL;
199
200 priv = dev->dev_private;
201 msm_dsi->dev = dev;
202
203 ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
204 if (ret) {
205 DRM_DEV_ERROR(dev->dev, "failed to modeset init host: %d\n", ret);
206 goto fail;
207 }
208
209 if (!msm_dsi_manager_validate_current_config(msm_dsi->id))
210 goto fail;
211
212 msm_dsi->encoder = encoder;
213
214 msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id);
215 if (IS_ERR(msm_dsi->bridge)) {
216 ret = PTR_ERR(msm_dsi->bridge);
217 DRM_DEV_ERROR(dev->dev, "failed to create dsi bridge: %d\n", ret);
218 msm_dsi->bridge = NULL;
219 goto fail;
220 }
221
222
223
224
225
226
227
228 ext_bridge = msm_dsi_host_get_bridge(msm_dsi->host);
229
230 if (ext_bridge)
231 msm_dsi->connector =
232 msm_dsi_manager_ext_bridge_init(msm_dsi->id);
233 else
234 msm_dsi->connector =
235 msm_dsi_manager_connector_init(msm_dsi->id);
236
237 if (IS_ERR(msm_dsi->connector)) {
238 ret = PTR_ERR(msm_dsi->connector);
239 DRM_DEV_ERROR(dev->dev,
240 "failed to create dsi connector: %d\n", ret);
241 msm_dsi->connector = NULL;
242 goto fail;
243 }
244
245 msm_dsi_manager_setup_encoder(msm_dsi->id);
246
247 priv->bridges[priv->num_bridges++] = msm_dsi->bridge;
248 priv->connectors[priv->num_connectors++] = msm_dsi->connector;
249
250 return 0;
251 fail:
252
253 if (msm_dsi->bridge) {
254 msm_dsi_manager_bridge_destroy(msm_dsi->bridge);
255 msm_dsi->bridge = NULL;
256 }
257
258
259 if (msm_dsi->connector && !msm_dsi->external_bridge)
260 msm_dsi->connector->funcs->destroy(msm_dsi->connector);
261
262 msm_dsi->connector = NULL;
263
264 return ret;
265 }
266