summaryrefslogtreecommitdiffstats
path: root/drivers/video/omap2/dss/venc_panel.c
blob: 0d2b1a0834a0cb17dc4902db8c74273d319c6d5b (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
/*
 * Copyright (C) 2009 Nokia Corporation
 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
 *
 * VENC panel driver
 *
 * 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/err.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/module.h>

#include <video/omapdss.h>

#include "dss.h"

static struct {
	struct mutex lock;
} venc_panel;

static ssize_t display_output_type_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct omap_dss_device *dssdev = to_dss_device(dev);
	const char *ret;

	switch (dssdev->phy.venc.type) {
	case OMAP_DSS_VENC_TYPE_COMPOSITE:
		ret = "composite";
		break;
	case OMAP_DSS_VENC_TYPE_SVIDEO:
		ret = "svideo";
		break;
	default:
		return -EINVAL;
	}

	return snprintf(buf, PAGE_SIZE, "%s\n", ret);
}

static ssize_t display_output_type_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t size)
{
	struct omap_dss_device *dssdev = to_dss_device(dev);
	enum omap_dss_venc_type new_type;

	if (sysfs_streq("composite", buf))
		new_type = OMAP_DSS_VENC_TYPE_COMPOSITE;
	else if (sysfs_streq("svideo", buf))
		new_type = OMAP_DSS_VENC_TYPE_SVIDEO;
	else
		return -EINVAL;

	mutex_lock(&venc_panel.lock);

	if (dssdev->phy.venc.type != new_type) {
		dssdev->phy.venc.type = new_type;
		omapdss_venc_set_type(dssdev, new_type);
		if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
			omapdss_venc_display_disable(dssdev);
			omapdss_venc_display_enable(dssdev);
		}
	}

	mutex_unlock(&venc_panel.lock);

	return size;
}

static DEVICE_ATTR(output_type, S_IRUGO | S_IWUSR,
		display_output_type_show, display_output_type_store);

static int venc_panel_probe(struct omap_dss_device *dssdev)
{
	/* set default timings to PAL */
	const struct omap_video_timings default_timings = {
		.x_res		= 720,
		.y_res		= 574,
		.pixel_clock	= 13500,
		.hsw		= 64,
		.hfp		= 12,
		.hbp		= 68,
		.vsw		= 5,
		.vfp		= 5,
		.vbp		= 41,

		.vsync_level	= OMAPDSS_SIG_ACTIVE_HIGH,
		.hsync_level	= OMAPDSS_SIG_ACTIVE_HIGH,

		.interlace	= true,
	};

	mutex_init(&venc_panel.lock);

	dssdev->panel.timings = default_timings;

	return device_create_file(&dssdev->dev, &dev_attr_output_type);
}

static void venc_panel_remove(struct omap_dss_device *dssdev)
{
	device_remove_file(&dssdev->dev, &dev_attr_output_type);
}

static int venc_panel_enable(struct omap_dss_device *dssdev)
{
	int r;

	dev_dbg(&dssdev->dev, "venc_panel_enable\n");

	mutex_lock(&venc_panel.lock);

	if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
		r = -EINVAL;
		goto err;
	}

	omapdss_venc_set_timings(dssdev, &dssdev->panel.timings);
	omapdss_venc_set_type(dssdev, dssdev->phy.venc.type);
	omapdss_venc_invert_vid_out_polarity(dssdev,
		dssdev->phy.venc.invert_polarity);

	r = omapdss_venc_display_enable(dssdev);
	if (r)
		goto err;

	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;

	mutex_unlock(&venc_panel.lock);

	return 0;
err:
	mutex_unlock(&venc_panel.lock);

	return r;
}

static void venc_panel_disable(struct omap_dss_device *dssdev)
{
	dev_dbg(&dssdev->dev, "venc_panel_disable\n");

	mutex_lock(&venc_panel.lock);

	if (dssdev->state == OMAP_DSS_DISPLAY_DISABLED)
		goto end;

	omapdss_venc_display_disable(dssdev);

	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
end:
	mutex_unlock(&venc_panel.lock);
}

static void venc_panel_set_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	dev_dbg(&dssdev->dev, "venc_panel_set_timings\n");

	mutex_lock(&venc_panel.lock);

	omapdss_venc_set_timings(dssdev, timings);
	dssdev->panel.timings = *timings;

	mutex_unlock(&venc_panel.lock);
}

static int venc_panel_check_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	dev_dbg(&dssdev->dev, "venc_panel_check_timings\n");

	return omapdss_venc_check_timings(dssdev, timings);
}

static u32 venc_panel_get_wss(struct omap_dss_device *dssdev)
{
	dev_dbg(&dssdev->dev, "venc_panel_get_wss\n");

	return omapdss_venc_get_wss(dssdev);
}

static int venc_panel_set_wss(struct omap_dss_device *dssdev, u32 wss)
{
	dev_dbg(&dssdev->dev, "venc_panel_set_wss\n");

	return omapdss_venc_set_wss(dssdev, wss);
}

static struct omap_dss_driver venc_driver = {
	.probe		= venc_panel_probe,
	.remove		= venc_panel_remove,

	.enable		= venc_panel_enable,
	.disable	= venc_panel_disable,

	.get_resolution	= omapdss_default_get_resolution,
	.get_recommended_bpp = omapdss_default_get_recommended_bpp,

	.set_timings	= venc_panel_set_timings,
	.check_timings	= venc_panel_check_timings,

	.get_wss	= venc_panel_get_wss,
	.set_wss	= venc_panel_set_wss,

	.driver         = {
		.name   = "venc",
		.owner  = THIS_MODULE,
	},
};

int venc_panel_init(void)
{
	return omap_dss_register_driver(&venc_driver);
}

void venc_panel_exit(void)
{
	omap_dss_unregister_driver(&venc_driver);
}