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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 */
5
6#include "dsi.h"
7
8struct 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
16static 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 msm_dsi->phy_dev = &phy_pdev->dev;
32 }
33
34 of_node_put(phy_node);
35
36 if (!phy_pdev || !msm_dsi->phy) {
37 DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__);
38 return -EPROBE_DEFER;
39 }
40
41 return 0;
42}
43
44static 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
65static 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 /* Init dsi host */
83 ret = msm_dsi_host_init(msm_dsi);
84 if (ret)
85 goto destroy_dsi;
86
87 /* GET dsi PHY */
88 ret = dsi_get_phy(msm_dsi);
89 if (ret)
90 goto destroy_dsi;
91
92 /* Register to dsi manager */
93 ret = msm_dsi_manager_register(msm_dsi);
94 if (ret)
95 goto destroy_dsi;
96
97 return msm_dsi;
98
99destroy_dsi:
100 dsi_destroy(msm_dsi);
101 return ERR_PTR(ret);
102}
103
104static 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 /* Don't fail the bind if the dsi port is not connected */
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
126static 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
140static const struct component_ops dsi_ops = {
141 .bind = dsi_bind,
142 .unbind = dsi_unbind,
143};
144
145static int dsi_dev_probe(struct platform_device *pdev)
146{
147 return component_add(&pdev->dev, &dsi_ops);
148}
149
150static int dsi_dev_remove(struct platform_device *pdev)
151{
152 DBG("");
153 component_del(&pdev->dev, &dsi_ops);
154 return 0;
155}
156
157static const struct of_device_id dt_match[] = {
158 { .compatible = "qcom,mdss-dsi-ctrl" },
159 {}
160};
161
162static const struct dev_pm_ops dsi_pm_ops = {
163 SET_RUNTIME_PM_OPS(msm_dsi_runtime_suspend, msm_dsi_runtime_resume, NULL)
164 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
165 pm_runtime_force_resume)
166};
167
168static struct platform_driver dsi_driver = {
169 .probe = dsi_dev_probe,
170 .remove = dsi_dev_remove,
171 .driver = {
172 .name = "msm_dsi",
173 .of_match_table = dt_match,
174 .pm = &dsi_pm_ops,
175 },
176};
177
178void __init msm_dsi_register(void)
179{
180 DBG("");
181 msm_dsi_phy_driver_register();
182 platform_driver_register(&dsi_driver);
183}
184
185void __exit msm_dsi_unregister(void)
186{
187 DBG("");
188 msm_dsi_phy_driver_unregister();
189 platform_driver_unregister(&dsi_driver);
190}
191
192int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
193 struct drm_encoder *encoder)
194{
195 struct msm_drm_private *priv;
196 struct drm_bridge *ext_bridge;
197 int ret;
198
199 if (WARN_ON(!encoder) || WARN_ON(!msm_dsi) || WARN_ON(!dev))
200 return -EINVAL;
201
202 priv = dev->dev_private;
203 msm_dsi->dev = dev;
204
205 ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
206 if (ret) {
207 DRM_DEV_ERROR(dev->dev, "failed to modeset init host: %d\n", ret);
208 goto fail;
209 }
210
211 if (!msm_dsi_manager_validate_current_config(msm_dsi->id)) {
212 ret = -EINVAL;
213 goto fail;
214 }
215
216 msm_dsi->encoder = encoder;
217
218 msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id);
219 if (IS_ERR(msm_dsi->bridge)) {
220 ret = PTR_ERR(msm_dsi->bridge);
221 DRM_DEV_ERROR(dev->dev, "failed to create dsi bridge: %d\n", ret);
222 msm_dsi->bridge = NULL;
223 goto fail;
224 }
225
226 /*
227 * check if the dsi encoder output is connected to a panel or an
228 * external bridge. We create a connector only if we're connected to a
229 * drm_panel device. When we're connected to an external bridge, we
230 * assume that the drm_bridge driver will create the connector itself.
231 */
232 ext_bridge = msm_dsi_host_get_bridge(msm_dsi->host);
233
234 if (ext_bridge)
235 msm_dsi->connector =
236 msm_dsi_manager_ext_bridge_init(msm_dsi->id);
237 else
238 msm_dsi->connector =
239 msm_dsi_manager_connector_init(msm_dsi->id);
240
241 if (IS_ERR(msm_dsi->connector)) {
242 ret = PTR_ERR(msm_dsi->connector);
243 DRM_DEV_ERROR(dev->dev,
244 "failed to create dsi connector: %d\n", ret);
245 msm_dsi->connector = NULL;
246 goto fail;
247 }
248
249 msm_dsi_manager_setup_encoder(msm_dsi->id);
250
251 priv->bridges[priv->num_bridges++] = msm_dsi->bridge;
252 priv->connectors[priv->num_connectors++] = msm_dsi->connector;
253
254 return 0;
255fail:
256 /* bridge/connector are normally destroyed by drm: */
257 if (msm_dsi->bridge) {
258 msm_dsi_manager_bridge_destroy(msm_dsi->bridge);
259 msm_dsi->bridge = NULL;
260 }
261
262 /* don't destroy connector if we didn't make it */
263 if (msm_dsi->connector && !msm_dsi->external_bridge)
264 msm_dsi->connector->funcs->destroy(msm_dsi->connector);
265
266 msm_dsi->connector = NULL;
267
268 return ret;
269}
270
271void msm_dsi_snapshot(struct msm_disp_state *disp_state, struct msm_dsi *msm_dsi)
272{
273 msm_dsi_host_snapshot(disp_state, msm_dsi->host);
274 msm_dsi_phy_snapshot(disp_state, msm_dsi->phy);
275}
276
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 */
5
6#include "dsi.h"
7#include "dsi_cfg.h"
8
9bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi)
10{
11 unsigned long host_flags = msm_dsi_host_get_mode_flags(msm_dsi->host);
12
13 return !(host_flags & MIPI_DSI_MODE_VIDEO);
14}
15
16struct drm_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
17{
18 return msm_dsi_host_get_dsc_config(msm_dsi->host);
19}
20
21static int dsi_get_phy(struct msm_dsi *msm_dsi)
22{
23 struct platform_device *pdev = msm_dsi->pdev;
24 struct platform_device *phy_pdev;
25 struct device_node *phy_node;
26
27 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
28 if (!phy_node) {
29 DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
30 return -ENXIO;
31 }
32
33 phy_pdev = of_find_device_by_node(phy_node);
34 if (phy_pdev) {
35 msm_dsi->phy = platform_get_drvdata(phy_pdev);
36 msm_dsi->phy_dev = &phy_pdev->dev;
37 }
38
39 of_node_put(phy_node);
40
41 if (!phy_pdev) {
42 DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__);
43 return -EPROBE_DEFER;
44 }
45 if (!msm_dsi->phy) {
46 put_device(&phy_pdev->dev);
47 DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__);
48 return -EPROBE_DEFER;
49 }
50
51 return 0;
52}
53
54static void dsi_destroy(struct msm_dsi *msm_dsi)
55{
56 if (!msm_dsi)
57 return;
58
59 msm_dsi_manager_unregister(msm_dsi);
60
61 if (msm_dsi->phy_dev) {
62 put_device(msm_dsi->phy_dev);
63 msm_dsi->phy = NULL;
64 msm_dsi->phy_dev = NULL;
65 }
66
67 if (msm_dsi->host) {
68 msm_dsi_host_destroy(msm_dsi->host);
69 msm_dsi->host = NULL;
70 }
71
72 platform_set_drvdata(msm_dsi->pdev, NULL);
73}
74
75static struct msm_dsi *dsi_init(struct platform_device *pdev)
76{
77 struct msm_dsi *msm_dsi;
78 int ret;
79
80 if (!pdev)
81 return ERR_PTR(-ENXIO);
82
83 msm_dsi = devm_kzalloc(&pdev->dev, sizeof(*msm_dsi), GFP_KERNEL);
84 if (!msm_dsi)
85 return ERR_PTR(-ENOMEM);
86 DBG("dsi probed=%p", msm_dsi);
87
88 msm_dsi->id = -1;
89 msm_dsi->pdev = pdev;
90 platform_set_drvdata(pdev, msm_dsi);
91
92 /* Init dsi host */
93 ret = msm_dsi_host_init(msm_dsi);
94 if (ret)
95 goto destroy_dsi;
96
97 /* GET dsi PHY */
98 ret = dsi_get_phy(msm_dsi);
99 if (ret)
100 goto destroy_dsi;
101
102 /* Register to dsi manager */
103 ret = msm_dsi_manager_register(msm_dsi);
104 if (ret)
105 goto destroy_dsi;
106
107 return msm_dsi;
108
109destroy_dsi:
110 dsi_destroy(msm_dsi);
111 return ERR_PTR(ret);
112}
113
114static int dsi_bind(struct device *dev, struct device *master, void *data)
115{
116 struct msm_drm_private *priv = dev_get_drvdata(master);
117 struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
118
119 priv->dsi[msm_dsi->id] = msm_dsi;
120
121 return 0;
122}
123
124static void dsi_unbind(struct device *dev, struct device *master,
125 void *data)
126{
127 struct msm_drm_private *priv = dev_get_drvdata(master);
128 struct msm_dsi *msm_dsi = dev_get_drvdata(dev);
129
130 priv->dsi[msm_dsi->id] = NULL;
131}
132
133static const struct component_ops dsi_ops = {
134 .bind = dsi_bind,
135 .unbind = dsi_unbind,
136};
137
138int dsi_dev_attach(struct platform_device *pdev)
139{
140 return component_add(&pdev->dev, &dsi_ops);
141}
142
143void dsi_dev_detach(struct platform_device *pdev)
144{
145 component_del(&pdev->dev, &dsi_ops);
146}
147
148static int dsi_dev_probe(struct platform_device *pdev)
149{
150 struct msm_dsi *msm_dsi;
151
152 DBG("");
153 msm_dsi = dsi_init(pdev);
154 if (IS_ERR(msm_dsi)) {
155 /* Don't fail the bind if the dsi port is not connected */
156 if (PTR_ERR(msm_dsi) == -ENODEV)
157 return 0;
158 else
159 return PTR_ERR(msm_dsi);
160 }
161
162 return 0;
163}
164
165static int dsi_dev_remove(struct platform_device *pdev)
166{
167 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
168
169 DBG("");
170 dsi_destroy(msm_dsi);
171
172 return 0;
173}
174
175static const struct of_device_id dt_match[] = {
176 { .compatible = "qcom,mdss-dsi-ctrl", .data = NULL /* autodetect cfg */ },
177 { .compatible = "qcom,dsi-ctrl-6g-qcm2290", .data = &qcm2290_dsi_cfg_handler },
178 {}
179};
180
181static const struct dev_pm_ops dsi_pm_ops = {
182 SET_RUNTIME_PM_OPS(msm_dsi_runtime_suspend, msm_dsi_runtime_resume, NULL)
183 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
184 pm_runtime_force_resume)
185};
186
187static struct platform_driver dsi_driver = {
188 .probe = dsi_dev_probe,
189 .remove = dsi_dev_remove,
190 .driver = {
191 .name = "msm_dsi",
192 .of_match_table = dt_match,
193 .pm = &dsi_pm_ops,
194 },
195};
196
197void __init msm_dsi_register(void)
198{
199 DBG("");
200 msm_dsi_phy_driver_register();
201 platform_driver_register(&dsi_driver);
202}
203
204void __exit msm_dsi_unregister(void)
205{
206 DBG("");
207 msm_dsi_phy_driver_unregister();
208 platform_driver_unregister(&dsi_driver);
209}
210
211int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
212 struct drm_encoder *encoder)
213{
214 struct msm_drm_private *priv = dev->dev_private;
215 int ret;
216
217 if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
218 DRM_DEV_ERROR(dev->dev, "too many bridges\n");
219 return -ENOSPC;
220 }
221
222 msm_dsi->dev = dev;
223
224 ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
225 if (ret) {
226 DRM_DEV_ERROR(dev->dev, "failed to modeset init host: %d\n", ret);
227 goto fail;
228 }
229
230 if (msm_dsi_is_bonded_dsi(msm_dsi) &&
231 !msm_dsi_is_master_dsi(msm_dsi)) {
232 /*
233 * Do not return an eror here,
234 * Just skip creating encoder/connector for the slave-DSI.
235 */
236 return 0;
237 }
238
239 msm_dsi->encoder = encoder;
240
241 msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id);
242 if (IS_ERR(msm_dsi->bridge)) {
243 ret = PTR_ERR(msm_dsi->bridge);
244 DRM_DEV_ERROR(dev->dev, "failed to create dsi bridge: %d\n", ret);
245 msm_dsi->bridge = NULL;
246 goto fail;
247 }
248
249 ret = msm_dsi_manager_ext_bridge_init(msm_dsi->id);
250 if (ret) {
251 DRM_DEV_ERROR(dev->dev,
252 "failed to create dsi connector: %d\n", ret);
253 goto fail;
254 }
255
256 priv->bridges[priv->num_bridges++] = msm_dsi->bridge;
257
258 return 0;
259fail:
260 /* bridge/connector are normally destroyed by drm: */
261 if (msm_dsi->bridge) {
262 msm_dsi_manager_bridge_destroy(msm_dsi->bridge);
263 msm_dsi->bridge = NULL;
264 }
265
266 return ret;
267}
268
269void msm_dsi_snapshot(struct msm_disp_state *disp_state, struct msm_dsi *msm_dsi)
270{
271 msm_dsi_host_snapshot(disp_state, msm_dsi->host);
272 msm_dsi_phy_snapshot(disp_state, msm_dsi->phy);
273}
274