1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/slab.h>
22#include <linux/of.h>
23
24#include "omapdss.h"
25
26static LIST_HEAD(output_list);
27static DEFINE_MUTEX(output_lock);
28
29int omapdss_output_set_device(struct omap_dss_device *out,
30 struct omap_dss_device *dssdev)
31{
32 int r;
33
34 mutex_lock(&output_lock);
35
36 if (out->dst) {
37 dev_err(out->dev,
38 "output already has device %s connected to it\n",
39 out->dst->name);
40 r = -EINVAL;
41 goto err;
42 }
43
44 if (out->output_type != dssdev->type) {
45 dev_err(out->dev, "output type and display type don't match\n");
46 r = -EINVAL;
47 goto err;
48 }
49
50 out->dst = dssdev;
51 dssdev->src = out;
52
53 mutex_unlock(&output_lock);
54
55 return 0;
56err:
57 mutex_unlock(&output_lock);
58
59 return r;
60}
61EXPORT_SYMBOL(omapdss_output_set_device);
62
63int omapdss_output_unset_device(struct omap_dss_device *out)
64{
65 int r;
66
67 mutex_lock(&output_lock);
68
69 if (!out->dst) {
70 dev_err(out->dev,
71 "output doesn't have a device connected to it\n");
72 r = -EINVAL;
73 goto err;
74 }
75
76 if (out->dst->state != OMAP_DSS_DISPLAY_DISABLED) {
77 dev_err(out->dev,
78 "device %s is not disabled, cannot unset device\n",
79 out->dst->name);
80 r = -EINVAL;
81 goto err;
82 }
83
84 out->dst->src = NULL;
85 out->dst = NULL;
86
87 mutex_unlock(&output_lock);
88
89 return 0;
90err:
91 mutex_unlock(&output_lock);
92
93 return r;
94}
95EXPORT_SYMBOL(omapdss_output_unset_device);
96
97int omapdss_register_output(struct omap_dss_device *out)
98{
99 list_add_tail(&out->list, &output_list);
100 return 0;
101}
102EXPORT_SYMBOL(omapdss_register_output);
103
104void omapdss_unregister_output(struct omap_dss_device *out)
105{
106 list_del(&out->list);
107}
108EXPORT_SYMBOL(omapdss_unregister_output);
109
110bool omapdss_component_is_output(struct device_node *node)
111{
112 struct omap_dss_device *out;
113
114 list_for_each_entry(out, &output_list, list) {
115 if (out->dev->of_node == node)
116 return true;
117 }
118
119 return false;
120}
121EXPORT_SYMBOL(omapdss_component_is_output);
122
123struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
124{
125 struct omap_dss_device *out;
126
127 list_for_each_entry(out, &output_list, list) {
128 if (out->id == id)
129 return out;
130 }
131
132 return NULL;
133}
134EXPORT_SYMBOL(omap_dss_get_output);
135
136struct omap_dss_device *omap_dss_find_output_by_port_node(struct device_node *port)
137{
138 struct device_node *src_node;
139 struct omap_dss_device *out;
140 u32 reg;
141
142 src_node = dss_of_port_get_parent_device(port);
143 if (!src_node)
144 return NULL;
145
146 reg = dss_of_port_get_port_number(port);
147
148 list_for_each_entry(out, &output_list, list) {
149 if (out->dev->of_node == src_node && out->port_num == reg) {
150 of_node_put(src_node);
151 return omap_dss_get_device(out);
152 }
153 }
154
155 of_node_put(src_node);
156
157 return NULL;
158}
159
160struct omap_dss_device *omapdss_find_output_from_display(struct omap_dss_device *dssdev)
161{
162 while (dssdev->src)
163 dssdev = dssdev->src;
164
165 if (dssdev->id != 0)
166 return omap_dss_get_device(dssdev);
167
168 return NULL;
169}
170EXPORT_SYMBOL(omapdss_find_output_from_display);
171
172static const struct dss_mgr_ops *dss_mgr_ops;
173static struct omap_drm_private *dss_mgr_ops_priv;
174
175int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops,
176 struct omap_drm_private *priv)
177{
178 if (dss_mgr_ops)
179 return -EBUSY;
180
181 dss_mgr_ops = mgr_ops;
182 dss_mgr_ops_priv = priv;
183
184 return 0;
185}
186EXPORT_SYMBOL(dss_install_mgr_ops);
187
188void dss_uninstall_mgr_ops(void)
189{
190 dss_mgr_ops = NULL;
191 dss_mgr_ops_priv = NULL;
192}
193EXPORT_SYMBOL(dss_uninstall_mgr_ops);
194
195int dss_mgr_connect(struct omap_dss_device *dssdev, struct omap_dss_device *dst)
196{
197 return dss_mgr_ops->connect(dss_mgr_ops_priv,
198 dssdev->dispc_channel, dst);
199}
200EXPORT_SYMBOL(dss_mgr_connect);
201
202void dss_mgr_disconnect(struct omap_dss_device *dssdev,
203 struct omap_dss_device *dst)
204{
205 dss_mgr_ops->disconnect(dss_mgr_ops_priv, dssdev->dispc_channel, dst);
206}
207EXPORT_SYMBOL(dss_mgr_disconnect);
208
209void dss_mgr_set_timings(struct omap_dss_device *dssdev,
210 const struct videomode *vm)
211{
212 dss_mgr_ops->set_timings(dss_mgr_ops_priv, dssdev->dispc_channel, vm);
213}
214EXPORT_SYMBOL(dss_mgr_set_timings);
215
216void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev,
217 const struct dss_lcd_mgr_config *config)
218{
219 dss_mgr_ops->set_lcd_config(dss_mgr_ops_priv,
220 dssdev->dispc_channel, config);
221}
222EXPORT_SYMBOL(dss_mgr_set_lcd_config);
223
224int dss_mgr_enable(struct omap_dss_device *dssdev)
225{
226 return dss_mgr_ops->enable(dss_mgr_ops_priv, dssdev->dispc_channel);
227}
228EXPORT_SYMBOL(dss_mgr_enable);
229
230void dss_mgr_disable(struct omap_dss_device *dssdev)
231{
232 dss_mgr_ops->disable(dss_mgr_ops_priv, dssdev->dispc_channel);
233}
234EXPORT_SYMBOL(dss_mgr_disable);
235
236void dss_mgr_start_update(struct omap_dss_device *dssdev)
237{
238 dss_mgr_ops->start_update(dss_mgr_ops_priv, dssdev->dispc_channel);
239}
240EXPORT_SYMBOL(dss_mgr_start_update);
241
242int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev,
243 void (*handler)(void *), void *data)
244{
245 return dss_mgr_ops->register_framedone_handler(dss_mgr_ops_priv,
246 dssdev->dispc_channel,
247 handler, data);
248}
249EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
250
251void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev,
252 void (*handler)(void *), void *data)
253{
254 dss_mgr_ops->unregister_framedone_handler(dss_mgr_ops_priv,
255 dssdev->dispc_channel,
256 handler, data);
257}
258EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
259
