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