diff options
Diffstat (limited to 'drivers/media/video/s5p-tv/hdmiphy_drv.c')
-rw-r--r-- | drivers/media/video/s5p-tv/hdmiphy_drv.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-tv/hdmiphy_drv.c b/drivers/media/video/s5p-tv/hdmiphy_drv.c new file mode 100644 index 00000000000..6693f4aff10 --- /dev/null +++ b/drivers/media/video/s5p-tv/hdmiphy_drv.c | |||
@@ -0,0 +1,188 @@ | |||
1 | /* | ||
2 | * Samsung HDMI Physical interface driver | ||
3 | * | ||
4 | * Copyright (C) 2010-2011 Samsung Electronics Co.Ltd | ||
5 | * Author: Tomasz Stanislawski <t.stanislaws@samsung.com> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify it | ||
8 | * under the terms of the GNU General Public License as published by the | ||
9 | * Free Software Foundation; either version 2 of the License, or (at your | ||
10 | * option) any later version. | ||
11 | */ | ||
12 | |||
13 | #include <linux/module.h> | ||
14 | #include <linux/i2c.h> | ||
15 | #include <linux/slab.h> | ||
16 | #include <linux/clk.h> | ||
17 | #include <linux/io.h> | ||
18 | #include <linux/interrupt.h> | ||
19 | #include <linux/irq.h> | ||
20 | #include <linux/err.h> | ||
21 | |||
22 | #include <media/v4l2-subdev.h> | ||
23 | |||
24 | MODULE_AUTHOR("Tomasz Stanislawski <t.stanislaws@samsung.com>"); | ||
25 | MODULE_DESCRIPTION("Samsung HDMI Physical interface driver"); | ||
26 | MODULE_LICENSE("GPL"); | ||
27 | |||
28 | struct hdmiphy_conf { | ||
29 | u32 preset; | ||
30 | const u8 *data; | ||
31 | }; | ||
32 | |||
33 | static const u8 hdmiphy_conf27[32] = { | ||
34 | 0x01, 0x05, 0x00, 0xD8, 0x10, 0x1C, 0x30, 0x40, | ||
35 | 0x6B, 0x10, 0x02, 0x51, 0xDf, 0xF2, 0x54, 0x87, | ||
36 | 0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0, | ||
37 | 0x22, 0x40, 0xe3, 0x26, 0x00, 0x00, 0x00, 0x00, | ||
38 | }; | ||
39 | |||
40 | static const u8 hdmiphy_conf74_175[32] = { | ||
41 | 0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xef, 0x5B, | ||
42 | 0x6D, 0x10, 0x01, 0x51, 0xef, 0xF3, 0x54, 0xb9, | ||
43 | 0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xE0, | ||
44 | 0x22, 0x40, 0xa5, 0x26, 0x01, 0x00, 0x00, 0x00, | ||
45 | }; | ||
46 | |||
47 | static const u8 hdmiphy_conf74_25[32] = { | ||
48 | 0x01, 0x05, 0x00, 0xd8, 0x10, 0x9c, 0xf8, 0x40, | ||
49 | 0x6a, 0x10, 0x01, 0x51, 0xff, 0xf1, 0x54, 0xba, | ||
50 | 0x84, 0x00, 0x30, 0x38, 0x00, 0x08, 0x10, 0xe0, | ||
51 | 0x22, 0x40, 0xa4, 0x26, 0x01, 0x00, 0x00, 0x00, | ||
52 | }; | ||
53 | |||
54 | static const u8 hdmiphy_conf148_5[32] = { | ||
55 | 0x01, 0x05, 0x00, 0xD8, 0x10, 0x9C, 0xf8, 0x40, | ||
56 | 0x6A, 0x18, 0x00, 0x51, 0xff, 0xF1, 0x54, 0xba, | ||
57 | 0x84, 0x00, 0x10, 0x38, 0x00, 0x08, 0x10, 0xE0, | ||
58 | 0x22, 0x40, 0xa4, 0x26, 0x02, 0x00, 0x00, 0x00, | ||
59 | }; | ||
60 | |||
61 | static const struct hdmiphy_conf hdmiphy_conf[] = { | ||
62 | { V4L2_DV_480P59_94, hdmiphy_conf27 }, | ||
63 | { V4L2_DV_1080P30, hdmiphy_conf74_175 }, | ||
64 | { V4L2_DV_720P59_94, hdmiphy_conf74_175 }, | ||
65 | { V4L2_DV_720P60, hdmiphy_conf74_25 }, | ||
66 | { V4L2_DV_1080P50, hdmiphy_conf148_5 }, | ||
67 | { V4L2_DV_1080P60, hdmiphy_conf148_5 }, | ||
68 | }; | ||
69 | |||
70 | const u8 *hdmiphy_preset2conf(u32 preset) | ||
71 | { | ||
72 | int i; | ||
73 | for (i = 0; i < ARRAY_SIZE(hdmiphy_conf); ++i) | ||
74 | if (hdmiphy_conf[i].preset == preset) | ||
75 | return hdmiphy_conf[i].data; | ||
76 | return NULL; | ||
77 | } | ||
78 | |||
79 | static int hdmiphy_s_power(struct v4l2_subdev *sd, int on) | ||
80 | { | ||
81 | /* to be implemented */ | ||
82 | return 0; | ||
83 | } | ||
84 | |||
85 | static int hdmiphy_s_dv_preset(struct v4l2_subdev *sd, | ||
86 | struct v4l2_dv_preset *preset) | ||
87 | { | ||
88 | const u8 *data; | ||
89 | u8 buffer[32]; | ||
90 | int ret; | ||
91 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
92 | struct device *dev = &client->dev; | ||
93 | |||
94 | dev_info(dev, "s_dv_preset(preset = %d)\n", preset->preset); | ||
95 | data = hdmiphy_preset2conf(preset->preset); | ||
96 | if (!data) { | ||
97 | dev_err(dev, "format not supported\n"); | ||
98 | return -EINVAL; | ||
99 | } | ||
100 | |||
101 | /* storing configuration to the device */ | ||
102 | memcpy(buffer, data, 32); | ||
103 | ret = i2c_master_send(client, buffer, 32); | ||
104 | if (ret != 32) { | ||
105 | dev_err(dev, "failed to configure HDMIPHY via I2C\n"); | ||
106 | return -EIO; | ||
107 | } | ||
108 | |||
109 | return 0; | ||
110 | } | ||
111 | |||
112 | static int hdmiphy_s_stream(struct v4l2_subdev *sd, int enable) | ||
113 | { | ||
114 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
115 | struct device *dev = &client->dev; | ||
116 | u8 buffer[2]; | ||
117 | int ret; | ||
118 | |||
119 | dev_info(dev, "s_stream(%d)\n", enable); | ||
120 | /* going to/from configuration from/to operation mode */ | ||
121 | buffer[0] = 0x1f; | ||
122 | buffer[1] = enable ? 0x80 : 0x00; | ||
123 | |||
124 | ret = i2c_master_send(client, buffer, 2); | ||
125 | if (ret != 2) { | ||
126 | dev_err(dev, "stream (%d) failed\n", enable); | ||
127 | return -EIO; | ||
128 | } | ||
129 | return 0; | ||
130 | } | ||
131 | |||
132 | static const struct v4l2_subdev_core_ops hdmiphy_core_ops = { | ||
133 | .s_power = hdmiphy_s_power, | ||
134 | }; | ||
135 | |||
136 | static const struct v4l2_subdev_video_ops hdmiphy_video_ops = { | ||
137 | .s_dv_preset = hdmiphy_s_dv_preset, | ||
138 | .s_stream = hdmiphy_s_stream, | ||
139 | }; | ||
140 | |||
141 | static const struct v4l2_subdev_ops hdmiphy_ops = { | ||
142 | .core = &hdmiphy_core_ops, | ||
143 | .video = &hdmiphy_video_ops, | ||
144 | }; | ||
145 | |||
146 | static int __devinit hdmiphy_probe(struct i2c_client *client, | ||
147 | const struct i2c_device_id *id) | ||
148 | { | ||
149 | static struct v4l2_subdev sd; | ||
150 | |||
151 | v4l2_i2c_subdev_init(&sd, client, &hdmiphy_ops); | ||
152 | dev_info(&client->dev, "probe successful\n"); | ||
153 | return 0; | ||
154 | } | ||
155 | |||
156 | static int __devexit hdmiphy_remove(struct i2c_client *client) | ||
157 | { | ||
158 | dev_info(&client->dev, "remove successful\n"); | ||
159 | return 0; | ||
160 | } | ||
161 | |||
162 | static const struct i2c_device_id hdmiphy_id[] = { | ||
163 | { "hdmiphy", 0 }, | ||
164 | { }, | ||
165 | }; | ||
166 | MODULE_DEVICE_TABLE(i2c, hdmiphy_id); | ||
167 | |||
168 | static struct i2c_driver hdmiphy_driver = { | ||
169 | .driver = { | ||
170 | .name = "s5p-hdmiphy", | ||
171 | .owner = THIS_MODULE, | ||
172 | }, | ||
173 | .probe = hdmiphy_probe, | ||
174 | .remove = __devexit_p(hdmiphy_remove), | ||
175 | .id_table = hdmiphy_id, | ||
176 | }; | ||
177 | |||
178 | static int __init hdmiphy_init(void) | ||
179 | { | ||
180 | return i2c_add_driver(&hdmiphy_driver); | ||
181 | } | ||
182 | module_init(hdmiphy_init); | ||
183 | |||
184 | static void __exit hdmiphy_exit(void) | ||
185 | { | ||
186 | i2c_del_driver(&hdmiphy_driver); | ||
187 | } | ||
188 | module_exit(hdmiphy_exit); | ||