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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
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 struct drm_bridge *bridge;
220 int ret;
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 return ret;
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 bridge = msm_dsi_manager_bridge_init(msm_dsi, encoder);
240 if (IS_ERR(bridge)) {
241 ret = PTR_ERR(bridge);
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, bridge);
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
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