summaryrefslogtreecommitdiff
path: root/drivers/media/video/s5p-tv/hdmiphy_drv.c
blob: 6693f4aff10819ae166df28f649b80fe395b05b1 (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
/*
 * Samsung HDMI Physical interface driver
 *
 * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd
 * Author: Tomasz Stanislawski <t.stanislaws@samsung.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/err.h>

#include <media/v4l2-subdev.h>

MODULE_AUTHOR("Tomasz Stanislawski <t.stanislaws@samsung.com>");
MODULE_DESCRIPTION("Samsung HDMI Physical interface driver");
MODULE_LICENSE("GPL");

struct hdmiphy_conf {
	u32 preset;
	const u8 *data;
};

static const u8 hdmiphy_conf27[32] = {
	0x01, 0x05, 0x00, 0xD8, 0x10, 0x1C, 0x30, 0x40,
	0x6B, 0x10, 0x02, 0x51, 0xDf, 0xF2, 0x54, 0x87,
	0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
	0x22, 0x40, 0xe3, 0x26, 0x00, 0x00, 0x00, 0x00,
};

static const u8 hdmiphy_conf74_175[32] = {
	0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xef, 0x5B,
	0x6D, 0x10, 0x01, 0x51, 0xef, 0xF3, 0x54, 0xb9,
	0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0,
	0x22, 0x40, 0xa5, 0x26, 0x01, 0x00, 0x00, 0x00,
};

static const u8 hdmiphy_conf74_25[32] = {
	0x01, 0x05, 0x00, 0xd8, 0x10, 0x9c, 0xf8, 0x40,
	0x6a, 0x10, 0x01, 0x51, 0xff, 0xf1, 0x54, 0xba,
	0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xe0,
	0x22, 0x40, 0xa4, 0x26, 0x01, 0x00, 0x00, 0x00,
};

static const u8 hdmiphy_conf148_5[32] = {
	0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xf8, 0x40,
	0x6A, 0x18, 0x00, 0x51, 0xff, 0xF1, 0x54, 0xba,
	0x84, 0x00, 0x10, 0x38, 0x00, 0x08, 0x10, 0xE0,
	0x22, 0x40, 0xa4, 0x26, 0x02, 0x00, 0x00, 0x00,
};

static const struct hdmiphy_conf hdmiphy_conf[] = {
	{ V4L2_DV_480P59_94, hdmiphy_conf27 },
	{ V4L2_DV_1080P30, hdmiphy_conf74_175 },
	{ V4L2_DV_720P59_94, hdmiphy_conf74_175 },
	{ V4L2_DV_720P60, hdmiphy_conf74_25 },
	{ V4L2_DV_1080P50, hdmiphy_conf148_5 },
	{ V4L2_DV_1080P60, hdmiphy_conf148_5 },
};

const u8 *hdmiphy_preset2conf(u32 preset)
{
	int i;
	for (i = 0; i < ARRAY_SIZE(hdmiphy_conf); ++i)
		if (hdmiphy_conf[i].preset == preset)
			return hdmiphy_conf[i].data;
	return NULL;
}

static int hdmiphy_s_power(struct v4l2_subdev *sd, int on)
{
	/* to be implemented */
	return 0;
}

static int hdmiphy_s_dv_preset(struct v4l2_subdev *sd,
	struct v4l2_dv_preset *preset)
{
	const u8 *data;
	u8 buffer[32];
	int ret;
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct device *dev = &client->dev;

	dev_info(dev, "s_dv_preset(preset = %d)\n", preset->preset);
	data = hdmiphy_preset2conf(preset->preset);
	if (!data) {
		dev_err(dev, "format not supported\n");
		return -EINVAL;
	}

	/* storing configuration to the device */
	memcpy(buffer, data, 32);
	ret = i2c_master_send(client, buffer, 32);
	if (ret != 32) {
		dev_err(dev, "failed to configure HDMIPHY via I2C\n");
		return -EIO;
	}

	return 0;
}

static int hdmiphy_s_stream(struct v4l2_subdev *sd, int enable)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct device *dev = &client->dev;
	u8 buffer[2];
	int ret;

	dev_info(dev, "s_stream(%d)\n", enable);
	/* going to/from configuration from/to operation mode */
	buffer[0] = 0x1f;
	buffer[1] = enable ? 0x80 : 0x00;

	ret = i2c_master_send(client, buffer, 2);
	if (ret != 2) {
		dev_err(dev, "stream (%d) failed\n", enable);
		return -EIO;
	}
	return 0;
}

static const struct v4l2_subdev_core_ops hdmiphy_core_ops = {
	.s_power =  hdmiphy_s_power,
};

static const struct v4l2_subdev_video_ops hdmiphy_video_ops = {
	.s_dv_preset = hdmiphy_s_dv_preset,
	.s_stream =  hdmiphy_s_stream,
};

static const struct v4l2_subdev_ops hdmiphy_ops = {
	.core = &hdmiphy_core_ops,
	.video = &hdmiphy_video_ops,
};

static int __devinit hdmiphy_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
{
	static struct v4l2_subdev sd;

	v4l2_i2c_subdev_init(&sd, client, &hdmiphy_ops);
	dev_info(&client->dev, "probe successful\n");
	return 0;
}

static int __devexit hdmiphy_remove(struct i2c_client *client)
{
	dev_info(&client->dev, "remove successful\n");
	return 0;
}

static const struct i2c_device_id hdmiphy_id[] = {
	{ "hdmiphy", 0 },
	{ },
};
MODULE_DEVICE_TABLE(i2c, hdmiphy_id);

static struct i2c_driver hdmiphy_driver = {
	.driver = {
		.name	= "s5p-hdmiphy",
		.owner	= THIS_MODULE,
	},
	.probe		= hdmiphy_probe,
	.remove		= __devexit_p(hdmiphy_remove),
	.id_table = hdmiphy_id,
};

static int __init hdmiphy_init(void)
{
	return i2c_add_driver(&hdmiphy_driver);
}
module_init(hdmiphy_init);

static void __exit hdmiphy_exit(void)
{
	i2c_del_driver(&hdmiphy_driver);
}
module_exit(hdmiphy_exit);