Commit | Line | Data |
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fbe60daa MS |
1 | /* |
2 | bt866 - BT866 Digital Video Encoder (Rockwell Part) | |
3 | ||
4 | Copyright (C) 1999 Mike Bernson <mike@mlb.org> | |
5 | Copyright (C) 1998 Dave Perks <dperks@ibm.net> | |
6 | ||
7 | Modifications for LML33/DC10plus unified driver | |
8 | Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> | |
9 | ||
10 | This code was modify/ported from the saa7111 driver written | |
11 | by Dave Perks. | |
12 | ||
13 | This code was adapted for the bt866 by Christer Weinigel and ported | |
14 | to 2.6 by Martin Samuelsson. | |
15 | ||
16 | This program is free software; you can redistribute it and/or modify | |
17 | it under the terms of the GNU General Public License as published by | |
18 | the Free Software Foundation; either version 2 of the License, or | |
19 | (at your option) any later version. | |
20 | ||
21 | This program is distributed in the hope that it will be useful, | |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
25 | ||
26 | You should have received a copy of the GNU General Public License | |
27 | along with this program; if not, write to the Free Software | |
28 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | */ | |
30 | ||
31 | #include <linux/module.h> | |
fbe60daa | 32 | #include <linux/types.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
c18fdcf6 HV |
34 | #include <linux/ioctl.h> |
35 | #include <asm/uaccess.h> | |
fbe60daa | 36 | #include <linux/i2c.h> |
8e4e1d80 HV |
37 | #include <linux/videodev2.h> |
38 | #include <media/v4l2-device.h> | |
fbe60daa | 39 | |
c18fdcf6 HV |
40 | MODULE_DESCRIPTION("Brooktree-866 video encoder driver"); |
41 | MODULE_AUTHOR("Mike Bernson & Dave Perks"); | |
fbe60daa MS |
42 | MODULE_LICENSE("GPL"); |
43 | ||
c18fdcf6 HV |
44 | static int debug; |
45 | module_param(debug, int, 0); | |
46 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
fbe60daa | 47 | |
8e4e1d80 | 48 | |
fbe60daa MS |
49 | /* ----------------------------------------------------------------------- */ |
50 | ||
51 | struct bt866 { | |
8e4e1d80 | 52 | struct v4l2_subdev sd; |
c18fdcf6 | 53 | u8 reg[256]; |
fbe60daa MS |
54 | }; |
55 | ||
8e4e1d80 | 56 | static inline struct bt866 *to_bt866(struct v4l2_subdev *sd) |
c18fdcf6 | 57 | { |
8e4e1d80 HV |
58 | return container_of(sd, struct bt866, sd); |
59 | } | |
60 | ||
61 | static int bt866_write(struct bt866 *encoder, u8 subaddr, u8 data) | |
62 | { | |
63 | struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd); | |
c18fdcf6 HV |
64 | u8 buffer[2]; |
65 | int err; | |
66 | ||
67 | buffer[0] = subaddr; | |
68 | buffer[1] = data; | |
69 | ||
70 | encoder->reg[subaddr] = data; | |
71 | ||
72 | v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data); | |
73 | ||
74 | for (err = 0; err < 3;) { | |
75 | if (i2c_master_send(client, buffer, 2) == 2) | |
76 | break; | |
77 | err++; | |
78 | v4l_warn(client, "error #%d writing to 0x%02x\n", | |
79 | err, subaddr); | |
80 | schedule_timeout_interruptible(msecs_to_jiffies(100)); | |
81 | } | |
82 | if (err == 3) { | |
83 | v4l_warn(client, "giving up\n"); | |
84 | return -1; | |
85 | } | |
86 | ||
87 | return 0; | |
88 | } | |
fbe60daa | 89 | |
8e4e1d80 | 90 | static int bt866_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
fbe60daa | 91 | { |
cc5cef8e | 92 | v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); |
fbe60daa | 93 | |
8e4e1d80 HV |
94 | /* Only PAL supported by this driver at the moment! */ |
95 | if (!(std & V4L2_STD_NTSC)) | |
96 | return -EINVAL; | |
97 | return 0; | |
98 | } | |
fbe60daa | 99 | |
5325b427 HV |
100 | static int bt866_s_routing(struct v4l2_subdev *sd, |
101 | u32 input, u32 output, u32 config) | |
8e4e1d80 HV |
102 | { |
103 | static const __u8 init[] = { | |
104 | 0xc8, 0xcc, /* CRSCALE */ | |
105 | 0xca, 0x91, /* CBSCALE */ | |
106 | 0xcc, 0x24, /* YC16 | OSDNUM */ | |
107 | 0xda, 0x00, /* */ | |
108 | 0xdc, 0x24, /* SETMODE | PAL */ | |
109 | 0xde, 0x02, /* EACTIVE */ | |
110 | ||
111 | /* overlay colors */ | |
112 | 0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */ | |
113 | 0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */ | |
114 | 0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */ | |
115 | 0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */ | |
116 | 0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */ | |
117 | 0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */ | |
118 | 0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */ | |
119 | 0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */ | |
120 | ||
121 | 0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */ | |
122 | 0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */ | |
123 | 0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */ | |
124 | 0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */ | |
125 | 0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */ | |
126 | 0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */ | |
127 | 0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */ | |
128 | 0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */ | |
129 | }; | |
130 | struct bt866 *encoder = to_bt866(sd); | |
131 | u8 val; | |
132 | int i; | |
133 | ||
134 | for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2) | |
135 | bt866_write(encoder, init[i], init[i+1]); | |
136 | ||
137 | val = encoder->reg[0xdc]; | |
138 | ||
5325b427 | 139 | if (input == 0) |
8e4e1d80 HV |
140 | val |= 0x40; /* CBSWAP */ |
141 | else | |
142 | val &= ~0x40; /* !CBSWAP */ | |
143 | ||
144 | bt866_write(encoder, 0xdc, val); | |
145 | ||
146 | val = encoder->reg[0xcc]; | |
5325b427 | 147 | if (input == 2) |
8e4e1d80 HV |
148 | val |= 0x01; /* OSDBAR */ |
149 | else | |
150 | val &= ~0x01; /* !OSDBAR */ | |
151 | bt866_write(encoder, 0xcc, val); | |
152 | ||
5325b427 | 153 | v4l2_dbg(1, debug, sd, "set input %d\n", input); |
8e4e1d80 | 154 | |
5325b427 | 155 | switch (input) { |
8e4e1d80 HV |
156 | case 0: |
157 | case 1: | |
158 | case 2: | |
c18fdcf6 | 159 | break; |
8e4e1d80 HV |
160 | default: |
161 | return -EINVAL; | |
fbe60daa | 162 | } |
8e4e1d80 HV |
163 | return 0; |
164 | } | |
fbe60daa | 165 | |
8e4e1d80 HV |
166 | #if 0 |
167 | /* Code to setup square pixels, might be of some use in the future, | |
168 | but is currently unused. */ | |
169 | val = encoder->reg[0xdc]; | |
170 | if (*iarg) | |
171 | val |= 1; /* SQUARE */ | |
172 | else | |
173 | val &= ~1; /* !SQUARE */ | |
174 | bt866_write(client, 0xdc, val); | |
175 | #endif | |
176 | ||
8e4e1d80 | 177 | /* ----------------------------------------------------------------------- */ |
fbe60daa | 178 | |
8e4e1d80 HV |
179 | static const struct v4l2_subdev_video_ops bt866_video_ops = { |
180 | .s_std_output = bt866_s_std_output, | |
181 | .s_routing = bt866_s_routing, | |
182 | }; | |
fbe60daa | 183 | |
8e4e1d80 | 184 | static const struct v4l2_subdev_ops bt866_ops = { |
8e4e1d80 HV |
185 | .video = &bt866_video_ops, |
186 | }; | |
fbe60daa | 187 | |
c18fdcf6 HV |
188 | static int bt866_probe(struct i2c_client *client, |
189 | const struct i2c_device_id *id) | |
fbe60daa MS |
190 | { |
191 | struct bt866 *encoder; | |
8e4e1d80 | 192 | struct v4l2_subdev *sd; |
fbe60daa | 193 | |
c18fdcf6 HV |
194 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
195 | client->addr << 1, client->adapter->name); | |
fbe60daa | 196 | |
c02b211d | 197 | encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL); |
c18fdcf6 | 198 | if (encoder == NULL) |
fbe60daa | 199 | return -ENOMEM; |
8e4e1d80 HV |
200 | sd = &encoder->sd; |
201 | v4l2_i2c_subdev_init(sd, client, &bt866_ops); | |
fbe60daa MS |
202 | return 0; |
203 | } | |
204 | ||
c18fdcf6 | 205 | static int bt866_remove(struct i2c_client *client) |
fbe60daa | 206 | { |
8e4e1d80 HV |
207 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
208 | ||
209 | v4l2_device_unregister_subdev(sd); | |
fbe60daa MS |
210 | return 0; |
211 | } | |
212 | ||
c18fdcf6 HV |
213 | static const struct i2c_device_id bt866_id[] = { |
214 | { "bt866", 0 }, | |
215 | { } | |
216 | }; | |
217 | MODULE_DEVICE_TABLE(i2c, bt866_id); | |
218 | ||
7a49e540 HV |
219 | static struct i2c_driver bt866_driver = { |
220 | .driver = { | |
221 | .owner = THIS_MODULE, | |
222 | .name = "bt866", | |
223 | }, | |
224 | .probe = bt866_probe, | |
225 | .remove = bt866_remove, | |
226 | .id_table = bt866_id, | |
c18fdcf6 | 227 | }; |
7a49e540 | 228 | |
c6e8d86f | 229 | module_i2c_driver(bt866_driver); |