summaryrefslogtreecommitdiff
path: root/drivers/video/omap2/dss/output.c
blob: 9ad7d2175a7b2dbba920ef651b99943e4b3193f7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
/*
 * Copyright (C) 2012 Texas Instruments Ltd
 * Author: Archit Taneja <archit@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

#include <video/omapdss.h>

#include "dss.h"

static LIST_HEAD(output_list);
static DEFINE_MUTEX(output_lock);

int omapdss_output_set_device(struct omap_dss_device *out,
		struct omap_dss_device *dssdev)
{
	int r;

	mutex_lock(&output_lock);

	if (out->device) {
		DSSERR("output already has device %s connected to it\n",
			out->device->name);
		r = -EINVAL;
		goto err;
	}

	if (out->output_type != dssdev->type) {
		DSSERR("output type and display type don't match\n");
		r = -EINVAL;
		goto err;
	}

	out->device = dssdev;
	dssdev->output = out;

	mutex_unlock(&output_lock);

	return 0;
err:
	mutex_unlock(&output_lock);

	return r;
}
EXPORT_SYMBOL(omapdss_output_set_device);

int omapdss_output_unset_device(struct omap_dss_device *out)
{
	int r;

	mutex_lock(&output_lock);

	if (!out->device) {
		DSSERR("output doesn't have a device connected to it\n");
		r = -EINVAL;
		goto err;
	}

	if (out->device->state != OMAP_DSS_DISPLAY_DISABLED) {
		DSSERR("device %s is not disabled, cannot unset device\n",
				out->device->name);
		r = -EINVAL;
		goto err;
	}

	out->device->output = NULL;
	out->device = NULL;

	mutex_unlock(&output_lock);

	return 0;
err:
	mutex_unlock(&output_lock);

	return r;
}
EXPORT_SYMBOL(omapdss_output_unset_device);

void dss_register_output(struct omap_dss_device *out)
{
	list_add_tail(&out->list, &output_list);
}

void dss_unregister_output(struct omap_dss_device *out)
{
	list_del(&out->list);
}

struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
{
	struct omap_dss_device *out;

	list_for_each_entry(out, &output_list, list) {
		if (out->id == id)
			return out;
	}

	return NULL;
}
EXPORT_SYMBOL(omap_dss_get_output);

struct omap_dss_device *omap_dss_find_output(const char *name)
{
	struct omap_dss_device *out;

	list_for_each_entry(out, &output_list, list) {
		if (strcmp(out->name, name) == 0)
			return omap_dss_get_device(out);
	}

	return NULL;
}
EXPORT_SYMBOL(omap_dss_find_output);

struct omap_dss_device *omap_dss_find_output_by_node(struct device_node *node)
{
	struct omap_dss_device *out;

	list_for_each_entry(out, &output_list, list) {
		if (out->dev->of_node == node)
			return omap_dss_get_device(out);
	}

	return NULL;
}
EXPORT_SYMBOL(omap_dss_find_output_by_node);

struct omap_dss_device *omapdss_find_output_from_display(struct omap_dss_device *dssdev)
{
	return omap_dss_get_device(dssdev->output);
}
EXPORT_SYMBOL(omapdss_find_output_from_display);

struct omap_overlay_manager *omapdss_find_mgr_from_display(struct omap_dss_device *dssdev)
{
	struct omap_dss_device *out;
	struct omap_overlay_manager *mgr;

	out = omapdss_find_output_from_display(dssdev);

	if (out == NULL)
		return NULL;

	mgr = out->manager;

	omap_dss_put_device(out);

	return mgr;
}
EXPORT_SYMBOL(omapdss_find_mgr_from_display);

static const struct dss_mgr_ops *dss_mgr_ops;

int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
{
	if (dss_mgr_ops)
		return -EBUSY;

	dss_mgr_ops = mgr_ops;

	return 0;
}
EXPORT_SYMBOL(dss_install_mgr_ops);

void dss_uninstall_mgr_ops(void)
{
	dss_mgr_ops = NULL;
}
EXPORT_SYMBOL(dss_uninstall_mgr_ops);

int dss_mgr_connect(struct omap_overlay_manager *mgr,
		struct omap_dss_device *dst)
{
	return dss_mgr_ops->connect(mgr, dst);
}
EXPORT_SYMBOL(dss_mgr_connect);

void dss_mgr_disconnect(struct omap_overlay_manager *mgr,
		struct omap_dss_device *dst)
{
	dss_mgr_ops->disconnect(mgr, dst);
}
EXPORT_SYMBOL(dss_mgr_disconnect);

void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
		const struct omap_video_timings *timings)
{
	dss_mgr_ops->set_timings(mgr, timings);
}
EXPORT_SYMBOL(dss_mgr_set_timings);

void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
		const struct dss_lcd_mgr_config *config)
{
	dss_mgr_ops->set_lcd_config(mgr, config);
}
EXPORT_SYMBOL(dss_mgr_set_lcd_config);

int dss_mgr_enable(struct omap_overlay_manager *mgr)
{
	return dss_mgr_ops->enable(mgr);
}
EXPORT_SYMBOL(dss_mgr_enable);

void dss_mgr_disable(struct omap_overlay_manager *mgr)
{
	dss_mgr_ops->disable(mgr);
}
EXPORT_SYMBOL(dss_mgr_disable);

void dss_mgr_start_update(struct omap_overlay_manager *mgr)
{
	dss_mgr_ops->start_update(mgr);
}
EXPORT_SYMBOL(dss_mgr_start_update);

int dss_mgr_register_framedone_handler(struct omap_overlay_manager *mgr,
		void (*handler)(void *), void *data)
{
	return dss_mgr_ops->register_framedone_handler(mgr, handler, data);
}
EXPORT_SYMBOL(dss_mgr_register_framedone_handler);

void dss_mgr_unregister_framedone_handler(struct omap_overlay_manager *mgr,
		void (*handler)(void *), void *data)
{
	dss_mgr_ops->unregister_framedone_handler(mgr, handler, data);
}
EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);