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1/*
2 * Copyright (C) 2012 Texas Instruments Ltd
3 * Author: Archit Taneja <archit@ti.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
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 <video/omapdss.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
172static const struct dss_mgr_ops *dss_mgr_ops;
173
174int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
175{
176 if (dss_mgr_ops)
177 return -EBUSY;
178
179 dss_mgr_ops = mgr_ops;
180
181 return 0;
182}
183EXPORT_SYMBOL(dss_install_mgr_ops);
184
185void dss_uninstall_mgr_ops(void)
186{
187 dss_mgr_ops = NULL;
188}
189EXPORT_SYMBOL(dss_uninstall_mgr_ops);
190
191int dss_mgr_connect(enum omap_channel channel,
192 struct omap_dss_device *dst)
193{
194 return dss_mgr_ops->connect(channel, dst);
195}
196EXPORT_SYMBOL(dss_mgr_connect);
197
198void dss_mgr_disconnect(enum omap_channel channel,
199 struct omap_dss_device *dst)
200{
201 dss_mgr_ops->disconnect(channel, dst);
202}
203EXPORT_SYMBOL(dss_mgr_disconnect);
204
205void dss_mgr_set_timings(enum omap_channel channel,
206 const struct omap_video_timings *timings)
207{
208 dss_mgr_ops->set_timings(channel, timings);
209}
210EXPORT_SYMBOL(dss_mgr_set_timings);
211
212void dss_mgr_set_lcd_config(enum omap_channel channel,
213 const struct dss_lcd_mgr_config *config)
214{
215 dss_mgr_ops->set_lcd_config(channel, config);
216}
217EXPORT_SYMBOL(dss_mgr_set_lcd_config);
218
219int dss_mgr_enable(enum omap_channel channel)
220{
221 return dss_mgr_ops->enable(channel);
222}
223EXPORT_SYMBOL(dss_mgr_enable);
224
225void dss_mgr_disable(enum omap_channel channel)
226{
227 dss_mgr_ops->disable(channel);
228}
229EXPORT_SYMBOL(dss_mgr_disable);
230
231void dss_mgr_start_update(enum omap_channel channel)
232{
233 dss_mgr_ops->start_update(channel);
234}
235EXPORT_SYMBOL(dss_mgr_start_update);
236
237int dss_mgr_register_framedone_handler(enum omap_channel channel,
238 void (*handler)(void *), void *data)
239{
240 return dss_mgr_ops->register_framedone_handler(channel, handler, data);
241}
242EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
243
244void dss_mgr_unregister_framedone_handler(enum omap_channel channel,
245 void (*handler)(void *), void *data)
246{
247 dss_mgr_ops->unregister_framedone_handler(channel, handler, data);
248}
249EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
1/*
2 * Copyright (C) 2012 Texas Instruments Ltd
3 * Author: Archit Taneja <archit@ti.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
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#include "dss.h"
26
27static LIST_HEAD(output_list);
28static DEFINE_MUTEX(output_lock);
29
30int omapdss_output_set_device(struct omap_dss_device *out,
31 struct omap_dss_device *dssdev)
32{
33 int r;
34
35 mutex_lock(&output_lock);
36
37 if (out->dst) {
38 DSSERR("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 DSSERR("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 DSSERR("output doesn't have a device connected to it\n");
71 r = -EINVAL;
72 goto err;
73 }
74
75 if (out->dst->state != OMAP_DSS_DISPLAY_DISABLED) {
76 DSSERR("device %s is not disabled, cannot unset device\n",
77 out->dst->name);
78 r = -EINVAL;
79 goto err;
80 }
81
82 out->dst->src = NULL;
83 out->dst = NULL;
84
85 mutex_unlock(&output_lock);
86
87 return 0;
88err:
89 mutex_unlock(&output_lock);
90
91 return r;
92}
93EXPORT_SYMBOL(omapdss_output_unset_device);
94
95int omapdss_register_output(struct omap_dss_device *out)
96{
97 list_add_tail(&out->list, &output_list);
98 return 0;
99}
100EXPORT_SYMBOL(omapdss_register_output);
101
102void omapdss_unregister_output(struct omap_dss_device *out)
103{
104 list_del(&out->list);
105}
106EXPORT_SYMBOL(omapdss_unregister_output);
107
108struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
109{
110 struct omap_dss_device *out;
111
112 list_for_each_entry(out, &output_list, list) {
113 if (out->id == id)
114 return out;
115 }
116
117 return NULL;
118}
119EXPORT_SYMBOL(omap_dss_get_output);
120
121struct omap_dss_device *omap_dss_find_output(const char *name)
122{
123 struct omap_dss_device *out;
124
125 list_for_each_entry(out, &output_list, list) {
126 if (strcmp(out->name, name) == 0)
127 return omap_dss_get_device(out);
128 }
129
130 return NULL;
131}
132EXPORT_SYMBOL(omap_dss_find_output);
133
134struct omap_dss_device *omap_dss_find_output_by_port_node(struct device_node *port)
135{
136 struct device_node *src_node;
137 struct omap_dss_device *out;
138 u32 reg;
139
140 src_node = dss_of_port_get_parent_device(port);
141 if (!src_node)
142 return NULL;
143
144 reg = dss_of_port_get_port_number(port);
145
146 list_for_each_entry(out, &output_list, list) {
147 if (out->dev->of_node == src_node && out->port_num == reg) {
148 of_node_put(src_node);
149 return omap_dss_get_device(out);
150 }
151 }
152
153 of_node_put(src_node);
154
155 return NULL;
156}
157EXPORT_SYMBOL(omap_dss_find_output_by_port_node);
158
159struct omap_dss_device *omapdss_find_output_from_display(struct omap_dss_device *dssdev)
160{
161 while (dssdev->src)
162 dssdev = dssdev->src;
163
164 if (dssdev->id != 0)
165 return omap_dss_get_device(dssdev);
166
167 return NULL;
168}
169EXPORT_SYMBOL(omapdss_find_output_from_display);
170
171static const struct dss_mgr_ops *dss_mgr_ops;
172
173int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
174{
175 if (dss_mgr_ops)
176 return -EBUSY;
177
178 dss_mgr_ops = mgr_ops;
179
180 return 0;
181}
182EXPORT_SYMBOL(dss_install_mgr_ops);
183
184void dss_uninstall_mgr_ops(void)
185{
186 dss_mgr_ops = NULL;
187}
188EXPORT_SYMBOL(dss_uninstall_mgr_ops);
189
190int dss_mgr_connect(enum omap_channel channel,
191 struct omap_dss_device *dst)
192{
193 return dss_mgr_ops->connect(channel, dst);
194}
195EXPORT_SYMBOL(dss_mgr_connect);
196
197void dss_mgr_disconnect(enum omap_channel channel,
198 struct omap_dss_device *dst)
199{
200 dss_mgr_ops->disconnect(channel, dst);
201}
202EXPORT_SYMBOL(dss_mgr_disconnect);
203
204void dss_mgr_set_timings(enum omap_channel channel, const struct videomode *vm)
205{
206 dss_mgr_ops->set_timings(channel, vm);
207}
208EXPORT_SYMBOL(dss_mgr_set_timings);
209
210void dss_mgr_set_lcd_config(enum omap_channel channel,
211 const struct dss_lcd_mgr_config *config)
212{
213 dss_mgr_ops->set_lcd_config(channel, config);
214}
215EXPORT_SYMBOL(dss_mgr_set_lcd_config);
216
217int dss_mgr_enable(enum omap_channel channel)
218{
219 return dss_mgr_ops->enable(channel);
220}
221EXPORT_SYMBOL(dss_mgr_enable);
222
223void dss_mgr_disable(enum omap_channel channel)
224{
225 dss_mgr_ops->disable(channel);
226}
227EXPORT_SYMBOL(dss_mgr_disable);
228
229void dss_mgr_start_update(enum omap_channel channel)
230{
231 dss_mgr_ops->start_update(channel);
232}
233EXPORT_SYMBOL(dss_mgr_start_update);
234
235int dss_mgr_register_framedone_handler(enum omap_channel channel,
236 void (*handler)(void *), void *data)
237{
238 return dss_mgr_ops->register_framedone_handler(channel, handler, data);
239}
240EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
241
242void dss_mgr_unregister_framedone_handler(enum omap_channel channel,
243 void (*handler)(void *), void *data)
244{
245 dss_mgr_ops->unregister_framedone_handler(channel, handler, data);
246}
247EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);