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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Archit Taneja <archit@ti.com>
5 */
6
7#include <linux/bitops.h>
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/slab.h>
12#include <linux/of.h>
13#include <linux/of_graph.h>
14
15#include <drm/drm_panel.h>
16
17#include "dss.h"
18#include "omapdss.h"
19
20int omapdss_device_init_output(struct omap_dss_device *out)
21{
22 struct device_node *remote_node;
23
24 remote_node = of_graph_get_remote_node(out->dev->of_node,
25 ffs(out->of_ports) - 1, 0);
26 if (!remote_node) {
27 dev_dbg(out->dev, "failed to find video sink\n");
28 return 0;
29 }
30
31 out->next = omapdss_find_device_by_node(remote_node);
32 out->bridge = of_drm_find_bridge(remote_node);
33 out->panel = of_drm_find_panel(remote_node);
34 if (IS_ERR(out->panel))
35 out->panel = NULL;
36
37 of_node_put(remote_node);
38
39 if (out->next && out->type != out->next->type) {
40 dev_err(out->dev, "output type and display type don't match\n");
41 omapdss_device_put(out->next);
42 out->next = NULL;
43 return -EINVAL;
44 }
45
46 return out->next || out->bridge || out->panel ? 0 : -EPROBE_DEFER;
47}
48EXPORT_SYMBOL(omapdss_device_init_output);
49
50void omapdss_device_cleanup_output(struct omap_dss_device *out)
51{
52 if (out->next)
53 omapdss_device_put(out->next);
54}
55EXPORT_SYMBOL(omapdss_device_cleanup_output);
56
57int dss_install_mgr_ops(struct dss_device *dss,
58 const struct dss_mgr_ops *mgr_ops,
59 struct omap_drm_private *priv)
60{
61 if (dss->mgr_ops)
62 return -EBUSY;
63
64 dss->mgr_ops = mgr_ops;
65 dss->mgr_ops_priv = priv;
66
67 return 0;
68}
69EXPORT_SYMBOL(dss_install_mgr_ops);
70
71void dss_uninstall_mgr_ops(struct dss_device *dss)
72{
73 dss->mgr_ops = NULL;
74 dss->mgr_ops_priv = NULL;
75}
76EXPORT_SYMBOL(dss_uninstall_mgr_ops);
77
78void dss_mgr_set_timings(struct omap_dss_device *dssdev,
79 const struct videomode *vm)
80{
81 dssdev->dss->mgr_ops->set_timings(dssdev->dss->mgr_ops_priv,
82 dssdev->dispc_channel, vm);
83}
84EXPORT_SYMBOL(dss_mgr_set_timings);
85
86void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
87 const struct dss_lcd_mgr_config *config)
88{
89 dssdev->dss->mgr_ops->set_lcd_config(dssdev->dss->mgr_ops_priv,
90 dssdev->dispc_channel, config);
91}
92EXPORT_SYMBOL(dss_mgr_set_lcd_config);
93
94int dss_mgr_enable(struct omap_dss_device *dssdev)
95{
96 return dssdev->dss->mgr_ops->enable(dssdev->dss->mgr_ops_priv,
97 dssdev->dispc_channel);
98}
99EXPORT_SYMBOL(dss_mgr_enable);
100
101void dss_mgr_disable(struct omap_dss_device *dssdev)
102{
103 dssdev->dss->mgr_ops->disable(dssdev->dss->mgr_ops_priv,
104 dssdev->dispc_channel);
105}
106EXPORT_SYMBOL(dss_mgr_disable);
107
108void dss_mgr_start_update(struct omap_dss_device *dssdev)
109{
110 dssdev->dss->mgr_ops->start_update(dssdev->dss->mgr_ops_priv,
111 dssdev->dispc_channel);
112}
113EXPORT_SYMBOL(dss_mgr_start_update);
114
115int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
116 void (*handler)(void *), void *data)
117{
118 struct dss_device *dss = dssdev->dss;
119
120 return dss->mgr_ops->register_framedone_handler(dss->mgr_ops_priv,
121 dssdev->dispc_channel,
122 handler, data);
123}
124EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
125
126void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
127 void (*handler)(void *), void *data)
128{
129 struct dss_device *dss = dssdev->dss;
130
131 dss->mgr_ops->unregister_framedone_handler(dss->mgr_ops_priv,
132 dssdev->dispc_channel,
133 handler, data);
134}
135EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Archit Taneja <archit@ti.com>
5 */
6
7#include <linux/kernel.h>
8#include <linux/module.h>
9#include <linux/platform_device.h>
10#include <linux/slab.h>
11#include <linux/of.h>
12#include <linux/of_graph.h>
13
14#include <drm/drm_bridge.h>
15#include <drm/drm_panel.h>
16
17#include "dss.h"
18#include "omapdss.h"
19
20int omapdss_device_init_output(struct omap_dss_device *out,
21 struct drm_bridge *local_bridge)
22{
23 struct device_node *remote_node;
24 int ret;
25
26 remote_node = of_graph_get_remote_node(out->dev->of_node,
27 out->of_port, 0);
28 if (!remote_node) {
29 dev_dbg(out->dev, "failed to find video sink\n");
30 return 0;
31 }
32
33 out->next = omapdss_find_device_by_node(remote_node);
34 out->bridge = of_drm_find_bridge(remote_node);
35 out->panel = of_drm_find_panel(remote_node);
36 if (IS_ERR(out->panel))
37 out->panel = NULL;
38
39 of_node_put(remote_node);
40
41 if (out->next && out->type != out->next->type) {
42 dev_err(out->dev, "output type and display type don't match\n");
43 ret = -EINVAL;
44 goto error;
45 }
46
47 if (out->panel) {
48 struct drm_bridge *bridge;
49
50 bridge = drm_panel_bridge_add(out->panel);
51 if (IS_ERR(bridge)) {
52 dev_err(out->dev,
53 "unable to create panel bridge (%ld)\n",
54 PTR_ERR(bridge));
55 ret = PTR_ERR(bridge);
56 goto error;
57 }
58
59 out->bridge = bridge;
60 }
61
62 if (local_bridge) {
63 if (!out->bridge) {
64 ret = -EPROBE_DEFER;
65 goto error;
66 }
67
68 out->next_bridge = out->bridge;
69 out->bridge = local_bridge;
70 }
71
72 if (!out->next && !out->bridge) {
73 ret = -EPROBE_DEFER;
74 goto error;
75 }
76
77 return 0;
78
79error:
80 omapdss_device_cleanup_output(out);
81 out->next = NULL;
82 return ret;
83}
84EXPORT_SYMBOL(omapdss_device_init_output);
85
86void omapdss_device_cleanup_output(struct omap_dss_device *out)
87{
88 if (out->bridge && out->panel)
89 drm_panel_bridge_remove(out->next_bridge ?
90 out->next_bridge : out->bridge);
91
92 if (out->next)
93 omapdss_device_put(out->next);
94}
95EXPORT_SYMBOL(omapdss_device_cleanup_output);
96
97int dss_install_mgr_ops(struct dss_device *dss,
98 const struct dss_mgr_ops *mgr_ops,
99 struct omap_drm_private *priv)
100{
101 if (dss->mgr_ops)
102 return -EBUSY;
103
104 dss->mgr_ops = mgr_ops;
105 dss->mgr_ops_priv = priv;
106
107 return 0;
108}
109EXPORT_SYMBOL(dss_install_mgr_ops);
110
111void dss_uninstall_mgr_ops(struct dss_device *dss)
112{
113 dss->mgr_ops = NULL;
114 dss->mgr_ops_priv = NULL;
115}
116EXPORT_SYMBOL(dss_uninstall_mgr_ops);
117
118void dss_mgr_set_timings(struct omap_dss_device *dssdev,
119 const struct videomode *vm)
120{
121 dssdev->dss->mgr_ops->set_timings(dssdev->dss->mgr_ops_priv,
122 dssdev->dispc_channel, vm);
123}
124EXPORT_SYMBOL(dss_mgr_set_timings);
125
126void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
127 const struct dss_lcd_mgr_config *config)
128{
129 dssdev->dss->mgr_ops->set_lcd_config(dssdev->dss->mgr_ops_priv,
130 dssdev->dispc_channel, config);
131}
132EXPORT_SYMBOL(dss_mgr_set_lcd_config);
133
134int dss_mgr_enable(struct omap_dss_device *dssdev)
135{
136 return dssdev->dss->mgr_ops->enable(dssdev->dss->mgr_ops_priv,
137 dssdev->dispc_channel);
138}
139EXPORT_SYMBOL(dss_mgr_enable);
140
141void dss_mgr_disable(struct omap_dss_device *dssdev)
142{
143 dssdev->dss->mgr_ops->disable(dssdev->dss->mgr_ops_priv,
144 dssdev->dispc_channel);
145}
146EXPORT_SYMBOL(dss_mgr_disable);
147
148void dss_mgr_start_update(struct omap_dss_device *dssdev)
149{
150 dssdev->dss->mgr_ops->start_update(dssdev->dss->mgr_ops_priv,
151 dssdev->dispc_channel);
152}
153EXPORT_SYMBOL(dss_mgr_start_update);
154
155int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
156 void (*handler)(void *), void *data)
157{
158 struct dss_device *dss = dssdev->dss;
159
160 return dss->mgr_ops->register_framedone_handler(dss->mgr_ops_priv,
161 dssdev->dispc_channel,
162 handler, data);
163}
164EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
165
166void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
167 void (*handler)(void *), void *data)
168{
169 struct dss_device *dss = dssdev->dss;
170
171 dss->mgr_ops->unregister_framedone_handler(dss->mgr_ops_priv,
172 dssdev->dispc_channel,
173 handler, data);
174}
175EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);