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