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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 <video/omapfb_dss.h>
25
26#include "dss.h"
27
28static LIST_HEAD(output_list);
29static DEFINE_MUTEX(output_lock);
30
31int omapdss_output_set_device(struct omap_dss_device *out,
32 struct omap_dss_device *dssdev)
33{
34 int r;
35
36 mutex_lock(&output_lock);
37
38 if (out->dst) {
39 DSSERR("output already has device %s connected to it\n",
40 out->dst->name);
41 r = -EINVAL;
42 goto err;
43 }
44
45 if (out->output_type != dssdev->type) {
46 DSSERR("output type and display type don't match\n");
47 r = -EINVAL;
48 goto err;
49 }
50
51 out->dst = dssdev;
52 dssdev->src = out;
53
54 mutex_unlock(&output_lock);
55
56 return 0;
57err:
58 mutex_unlock(&output_lock);
59
60 return r;
61}
62EXPORT_SYMBOL(omapdss_output_set_device);
63
64int omapdss_output_unset_device(struct omap_dss_device *out)
65{
66 int r;
67
68 mutex_lock(&output_lock);
69
70 if (!out->dst) {
71 DSSERR("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 DSSERR("device %s is not disabled, cannot unset device\n",
78 out->dst->name);
79 r = -EINVAL;
80 goto err;
81 }
82
83 out->dst->src = NULL;
84 out->dst = NULL;
85
86 mutex_unlock(&output_lock);
87
88 return 0;
89err:
90 mutex_unlock(&output_lock);
91
92 return r;
93}
94EXPORT_SYMBOL(omapdss_output_unset_device);
95
96int omapdss_register_output(struct omap_dss_device *out)
97{
98 list_add_tail(&out->list, &output_list);
99 return 0;
100}
101EXPORT_SYMBOL(omapdss_register_output);
102
103void omapdss_unregister_output(struct omap_dss_device *out)
104{
105 list_del(&out->list);
106}
107EXPORT_SYMBOL(omapdss_unregister_output);
108
109struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
110{
111 struct omap_dss_device *out;
112
113 list_for_each_entry(out, &output_list, list) {
114 if (out->id == id)
115 return out;
116 }
117
118 return NULL;
119}
120EXPORT_SYMBOL(omap_dss_get_output);
121
122struct omap_dss_device *omap_dss_find_output(const char *name)
123{
124 struct omap_dss_device *out;
125
126 list_for_each_entry(out, &output_list, list) {
127 if (strcmp(out->name, name) == 0)
128 return omap_dss_get_device(out);
129 }
130
131 return NULL;
132}
133EXPORT_SYMBOL(omap_dss_find_output);
134
135struct omap_dss_device *omap_dss_find_output_by_port_node(struct device_node *port)
136{
137 struct device_node *src_node;
138 struct omap_dss_device *out;
139 u32 reg;
140
141 src_node = dss_of_port_get_parent_device(port);
142 if (!src_node)
143 return NULL;
144
145 reg = dss_of_port_get_port_number(port);
146
147 list_for_each_entry(out, &output_list, list) {
148 if (out->dev->of_node == src_node && out->port_num == reg) {
149 of_node_put(src_node);
150 return omap_dss_get_device(out);
151 }
152 }
153
154 of_node_put(src_node);
155
156 return NULL;
157}
158EXPORT_SYMBOL(omap_dss_find_output_by_port_node);
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
172struct omap_overlay_manager *omapdss_find_mgr_from_display(struct omap_dss_device *dssdev)
173{
174 struct omap_dss_device *out;
175 struct omap_overlay_manager *mgr;
176
177 out = omapdss_find_output_from_display(dssdev);
178
179 if (out == NULL)
180 return NULL;
181
182 mgr = out->manager;
183
184 omap_dss_put_device(out);
185
186 return mgr;
187}
188EXPORT_SYMBOL(omapdss_find_mgr_from_display);
189
190static const struct dss_mgr_ops *dss_mgr_ops;
191
192int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
193{
194 if (dss_mgr_ops)
195 return -EBUSY;
196
197 dss_mgr_ops = mgr_ops;
198
199 return 0;
200}
201EXPORT_SYMBOL(dss_install_mgr_ops);
202
203void dss_uninstall_mgr_ops(void)
204{
205 dss_mgr_ops = NULL;
206}
207EXPORT_SYMBOL(dss_uninstall_mgr_ops);
208
209int dss_mgr_connect(struct omap_overlay_manager *mgr,
210 struct omap_dss_device *dst)
211{
212 return dss_mgr_ops->connect(mgr, dst);
213}
214EXPORT_SYMBOL(dss_mgr_connect);
215
216void dss_mgr_disconnect(struct omap_overlay_manager *mgr,
217 struct omap_dss_device *dst)
218{
219 dss_mgr_ops->disconnect(mgr, dst);
220}
221EXPORT_SYMBOL(dss_mgr_disconnect);
222
223void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
224 const struct omap_video_timings *timings)
225{
226 dss_mgr_ops->set_timings(mgr, timings);
227}
228EXPORT_SYMBOL(dss_mgr_set_timings);
229
230void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
231 const struct dss_lcd_mgr_config *config)
232{
233 dss_mgr_ops->set_lcd_config(mgr, config);
234}
235EXPORT_SYMBOL(dss_mgr_set_lcd_config);
236
237int dss_mgr_enable(struct omap_overlay_manager *mgr)
238{
239 return dss_mgr_ops->enable(mgr);
240}
241EXPORT_SYMBOL(dss_mgr_enable);
242
243void dss_mgr_disable(struct omap_overlay_manager *mgr)
244{
245 dss_mgr_ops->disable(mgr);
246}
247EXPORT_SYMBOL(dss_mgr_disable);
248
249void dss_mgr_start_update(struct omap_overlay_manager *mgr)
250{
251 dss_mgr_ops->start_update(mgr);
252}
253EXPORT_SYMBOL(dss_mgr_start_update);
254
255int dss_mgr_register_framedone_handler(struct omap_overlay_manager *mgr,
256 void (*handler)(void *), void *data)
257{
258 return dss_mgr_ops->register_framedone_handler(mgr, handler, data);
259}
260EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
261
262void dss_mgr_unregister_framedone_handler(struct omap_overlay_manager *mgr,
263 void (*handler)(void *), void *data)
264{
265 dss_mgr_ops->unregister_framedone_handler(mgr, handler, data);
266}
267EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
268
