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> |
c18fdcf6 HV |
33 | #include <linux/ioctl.h> |
34 | #include <asm/uaccess.h> | |
fbe60daa | 35 | #include <linux/i2c.h> |
c18fdcf6 | 36 | #include <linux/i2c-id.h> |
8e4e1d80 HV |
37 | #include <linux/videodev2.h> |
38 | #include <media/v4l2-device.h> | |
39 | #include <media/v4l2-chip-ident.h> | |
2d26698e | 40 | #include <media/v4l2-i2c-drv.h> |
fbe60daa | 41 | |
c18fdcf6 HV |
42 | MODULE_DESCRIPTION("Brooktree-866 video encoder driver"); |
43 | MODULE_AUTHOR("Mike Bernson & Dave Perks"); | |
fbe60daa MS |
44 | MODULE_LICENSE("GPL"); |
45 | ||
c18fdcf6 HV |
46 | static int debug; |
47 | module_param(debug, int, 0); | |
48 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
fbe60daa | 49 | |
8e4e1d80 | 50 | |
fbe60daa MS |
51 | /* ----------------------------------------------------------------------- */ |
52 | ||
53 | struct bt866 { | |
8e4e1d80 | 54 | struct v4l2_subdev sd; |
c18fdcf6 | 55 | u8 reg[256]; |
fbe60daa MS |
56 | }; |
57 | ||
8e4e1d80 | 58 | static inline struct bt866 *to_bt866(struct v4l2_subdev *sd) |
c18fdcf6 | 59 | { |
8e4e1d80 HV |
60 | return container_of(sd, struct bt866, sd); |
61 | } | |
62 | ||
63 | static int bt866_write(struct bt866 *encoder, u8 subaddr, u8 data) | |
64 | { | |
65 | struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd); | |
c18fdcf6 HV |
66 | u8 buffer[2]; |
67 | int err; | |
68 | ||
69 | buffer[0] = subaddr; | |
70 | buffer[1] = data; | |
71 | ||
72 | encoder->reg[subaddr] = data; | |
73 | ||
74 | v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data); | |
75 | ||
76 | for (err = 0; err < 3;) { | |
77 | if (i2c_master_send(client, buffer, 2) == 2) | |
78 | break; | |
79 | err++; | |
80 | v4l_warn(client, "error #%d writing to 0x%02x\n", | |
81 | err, subaddr); | |
82 | schedule_timeout_interruptible(msecs_to_jiffies(100)); | |
83 | } | |
84 | if (err == 3) { | |
85 | v4l_warn(client, "giving up\n"); | |
86 | return -1; | |
87 | } | |
88 | ||
89 | return 0; | |
90 | } | |
fbe60daa | 91 | |
8e4e1d80 | 92 | static int bt866_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
fbe60daa | 93 | { |
cc5cef8e | 94 | v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); |
fbe60daa | 95 | |
8e4e1d80 HV |
96 | /* Only PAL supported by this driver at the moment! */ |
97 | if (!(std & V4L2_STD_NTSC)) | |
98 | return -EINVAL; | |
99 | return 0; | |
100 | } | |
fbe60daa | 101 | |
8e4e1d80 HV |
102 | static int bt866_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route) |
103 | { | |
104 | static const __u8 init[] = { | |
105 | 0xc8, 0xcc, /* CRSCALE */ | |
106 | 0xca, 0x91, /* CBSCALE */ | |
107 | 0xcc, 0x24, /* YC16 | OSDNUM */ | |
108 | 0xda, 0x00, /* */ | |
109 | 0xdc, 0x24, /* SETMODE | PAL */ | |
110 | 0xde, 0x02, /* EACTIVE */ | |
111 | ||
112 | /* overlay colors */ | |
113 | 0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */ | |
114 | 0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */ | |
115 | 0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */ | |
116 | 0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */ | |
117 | 0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */ | |
118 | 0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */ | |
119 | 0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */ | |
120 | 0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */ | |
121 | ||
122 | 0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */ | |
123 | 0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */ | |
124 | 0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */ | |
125 | 0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */ | |
126 | 0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */ | |
127 | 0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */ | |
128 | 0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */ | |
129 | 0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */ | |
130 | }; | |
131 | struct bt866 *encoder = to_bt866(sd); | |
132 | u8 val; | |
133 | int i; | |
134 | ||
135 | for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2) | |
136 | bt866_write(encoder, init[i], init[i+1]); | |
137 | ||
138 | val = encoder->reg[0xdc]; | |
139 | ||
140 | if (route->input == 0) | |
141 | val |= 0x40; /* CBSWAP */ | |
142 | else | |
143 | val &= ~0x40; /* !CBSWAP */ | |
144 | ||
145 | bt866_write(encoder, 0xdc, val); | |
146 | ||
147 | val = encoder->reg[0xcc]; | |
148 | if (route->input == 2) | |
149 | val |= 0x01; /* OSDBAR */ | |
150 | else | |
151 | val &= ~0x01; /* !OSDBAR */ | |
152 | bt866_write(encoder, 0xcc, val); | |
153 | ||
154 | v4l2_dbg(1, debug, sd, "set input %d\n", route->input); | |
155 | ||
156 | switch (route->input) { | |
157 | case 0: | |
158 | case 1: | |
159 | case 2: | |
c18fdcf6 | 160 | break; |
8e4e1d80 HV |
161 | default: |
162 | return -EINVAL; | |
fbe60daa | 163 | } |
8e4e1d80 HV |
164 | return 0; |
165 | } | |
fbe60daa | 166 | |
8e4e1d80 HV |
167 | #if 0 |
168 | /* Code to setup square pixels, might be of some use in the future, | |
169 | but is currently unused. */ | |
170 | val = encoder->reg[0xdc]; | |
171 | if (*iarg) | |
172 | val |= 1; /* SQUARE */ | |
173 | else | |
174 | val &= ~1; /* !SQUARE */ | |
175 | bt866_write(client, 0xdc, val); | |
176 | #endif | |
177 | ||
178 | static int bt866_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) | |
179 | { | |
180 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
fbe60daa | 181 | |
8e4e1d80 HV |
182 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT866, 0); |
183 | } | |
fbe60daa | 184 | |
8e4e1d80 | 185 | /* ----------------------------------------------------------------------- */ |
fbe60daa | 186 | |
8e4e1d80 HV |
187 | static const struct v4l2_subdev_core_ops bt866_core_ops = { |
188 | .g_chip_ident = bt866_g_chip_ident, | |
189 | }; | |
fbe60daa | 190 | |
8e4e1d80 HV |
191 | static const struct v4l2_subdev_video_ops bt866_video_ops = { |
192 | .s_std_output = bt866_s_std_output, | |
193 | .s_routing = bt866_s_routing, | |
194 | }; | |
fbe60daa | 195 | |
8e4e1d80 HV |
196 | static const struct v4l2_subdev_ops bt866_ops = { |
197 | .core = &bt866_core_ops, | |
198 | .video = &bt866_video_ops, | |
199 | }; | |
fbe60daa | 200 | |
c18fdcf6 HV |
201 | static int bt866_probe(struct i2c_client *client, |
202 | const struct i2c_device_id *id) | |
fbe60daa MS |
203 | { |
204 | struct bt866 *encoder; | |
8e4e1d80 | 205 | struct v4l2_subdev *sd; |
fbe60daa | 206 | |
c18fdcf6 HV |
207 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
208 | client->addr << 1, client->adapter->name); | |
fbe60daa MS |
209 | |
210 | encoder = kzalloc(sizeof(*encoder), GFP_KERNEL); | |
c18fdcf6 | 211 | if (encoder == NULL) |
fbe60daa | 212 | return -ENOMEM; |
8e4e1d80 HV |
213 | sd = &encoder->sd; |
214 | v4l2_i2c_subdev_init(sd, client, &bt866_ops); | |
fbe60daa MS |
215 | return 0; |
216 | } | |
217 | ||
c18fdcf6 | 218 | static int bt866_remove(struct i2c_client *client) |
fbe60daa | 219 | { |
8e4e1d80 HV |
220 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
221 | ||
222 | v4l2_device_unregister_subdev(sd); | |
223 | kfree(to_bt866(sd)); | |
fbe60daa MS |
224 | return 0; |
225 | } | |
226 | ||
c18fdcf6 HV |
227 | static const struct i2c_device_id bt866_id[] = { |
228 | { "bt866", 0 }, | |
229 | { } | |
230 | }; | |
231 | MODULE_DEVICE_TABLE(i2c, bt866_id); | |
232 | ||
233 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
234 | .name = "bt866", | |
c18fdcf6 HV |
235 | .probe = bt866_probe, |
236 | .remove = bt866_remove, | |
c18fdcf6 HV |
237 | .id_table = bt866_id, |
238 | }; |