Commit | Line | Data |
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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
fbe60daa MS |
2 | /* |
3 | bt866 - BT866 Digital Video Encoder (Rockwell Part) | |
4 | ||
5 | Copyright (C) 1999 Mike Bernson <mike@mlb.org> | |
6 | Copyright (C) 1998 Dave Perks <dperks@ibm.net> | |
7 | ||
8 | Modifications for LML33/DC10plus unified driver | |
9 | Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> | |
10 | ||
11 | This code was modify/ported from the saa7111 driver written | |
12 | by Dave Perks. | |
13 | ||
14 | This code was adapted for the bt866 by Christer Weinigel and ported | |
15 | to 2.6 by Martin Samuelsson. | |
16 | ||
fbe60daa MS |
17 | */ |
18 | ||
19 | #include <linux/module.h> | |
fbe60daa | 20 | #include <linux/types.h> |
5a0e3ad6 | 21 | #include <linux/slab.h> |
c18fdcf6 | 22 | #include <linux/ioctl.h> |
7c0f6ba6 | 23 | #include <linux/uaccess.h> |
fbe60daa | 24 | #include <linux/i2c.h> |
8e4e1d80 HV |
25 | #include <linux/videodev2.h> |
26 | #include <media/v4l2-device.h> | |
fbe60daa | 27 | |
c18fdcf6 HV |
28 | MODULE_DESCRIPTION("Brooktree-866 video encoder driver"); |
29 | MODULE_AUTHOR("Mike Bernson & Dave Perks"); | |
fbe60daa MS |
30 | MODULE_LICENSE("GPL"); |
31 | ||
c18fdcf6 HV |
32 | static int debug; |
33 | module_param(debug, int, 0); | |
34 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
fbe60daa | 35 | |
8e4e1d80 | 36 | |
fbe60daa MS |
37 | /* ----------------------------------------------------------------------- */ |
38 | ||
39 | struct bt866 { | |
8e4e1d80 | 40 | struct v4l2_subdev sd; |
c18fdcf6 | 41 | u8 reg[256]; |
fbe60daa MS |
42 | }; |
43 | ||
8e4e1d80 | 44 | static inline struct bt866 *to_bt866(struct v4l2_subdev *sd) |
c18fdcf6 | 45 | { |
8e4e1d80 HV |
46 | return container_of(sd, struct bt866, sd); |
47 | } | |
48 | ||
49 | static int bt866_write(struct bt866 *encoder, u8 subaddr, u8 data) | |
50 | { | |
51 | struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd); | |
c18fdcf6 HV |
52 | u8 buffer[2]; |
53 | int err; | |
54 | ||
55 | buffer[0] = subaddr; | |
56 | buffer[1] = data; | |
57 | ||
58 | encoder->reg[subaddr] = data; | |
59 | ||
60 | v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data); | |
61 | ||
62 | for (err = 0; err < 3;) { | |
63 | if (i2c_master_send(client, buffer, 2) == 2) | |
64 | break; | |
65 | err++; | |
66 | v4l_warn(client, "error #%d writing to 0x%02x\n", | |
67 | err, subaddr); | |
68 | schedule_timeout_interruptible(msecs_to_jiffies(100)); | |
69 | } | |
70 | if (err == 3) { | |
71 | v4l_warn(client, "giving up\n"); | |
72 | return -1; | |
73 | } | |
74 | ||
75 | return 0; | |
76 | } | |
fbe60daa | 77 | |
8e4e1d80 | 78 | static int bt866_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
fbe60daa | 79 | { |
cc5cef8e | 80 | v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); |
fbe60daa | 81 | |
8e4e1d80 HV |
82 | /* Only PAL supported by this driver at the moment! */ |
83 | if (!(std & V4L2_STD_NTSC)) | |
84 | return -EINVAL; | |
85 | return 0; | |
86 | } | |
fbe60daa | 87 | |
5325b427 HV |
88 | static int bt866_s_routing(struct v4l2_subdev *sd, |
89 | u32 input, u32 output, u32 config) | |
8e4e1d80 HV |
90 | { |
91 | static const __u8 init[] = { | |
92 | 0xc8, 0xcc, /* CRSCALE */ | |
93 | 0xca, 0x91, /* CBSCALE */ | |
94 | 0xcc, 0x24, /* YC16 | OSDNUM */ | |
95 | 0xda, 0x00, /* */ | |
96 | 0xdc, 0x24, /* SETMODE | PAL */ | |
97 | 0xde, 0x02, /* EACTIVE */ | |
98 | ||
99 | /* overlay colors */ | |
100 | 0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */ | |
101 | 0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */ | |
102 | 0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */ | |
103 | 0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */ | |
104 | 0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */ | |
105 | 0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */ | |
106 | 0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */ | |
107 | 0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */ | |
108 | ||
109 | 0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */ | |
110 | 0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */ | |
111 | 0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */ | |
112 | 0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */ | |
113 | 0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */ | |
114 | 0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */ | |
115 | 0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */ | |
116 | 0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */ | |
117 | }; | |
118 | struct bt866 *encoder = to_bt866(sd); | |
119 | u8 val; | |
120 | int i; | |
121 | ||
122 | for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2) | |
123 | bt866_write(encoder, init[i], init[i+1]); | |
124 | ||
125 | val = encoder->reg[0xdc]; | |
126 | ||
5325b427 | 127 | if (input == 0) |
8e4e1d80 HV |
128 | val |= 0x40; /* CBSWAP */ |
129 | else | |
130 | val &= ~0x40; /* !CBSWAP */ | |
131 | ||
132 | bt866_write(encoder, 0xdc, val); | |
133 | ||
134 | val = encoder->reg[0xcc]; | |
5325b427 | 135 | if (input == 2) |
8e4e1d80 HV |
136 | val |= 0x01; /* OSDBAR */ |
137 | else | |
138 | val &= ~0x01; /* !OSDBAR */ | |
139 | bt866_write(encoder, 0xcc, val); | |
140 | ||
5325b427 | 141 | v4l2_dbg(1, debug, sd, "set input %d\n", input); |
8e4e1d80 | 142 | |
5325b427 | 143 | switch (input) { |
8e4e1d80 HV |
144 | case 0: |
145 | case 1: | |
146 | case 2: | |
c18fdcf6 | 147 | break; |
8e4e1d80 HV |
148 | default: |
149 | return -EINVAL; | |
fbe60daa | 150 | } |
8e4e1d80 HV |
151 | return 0; |
152 | } | |
fbe60daa | 153 | |
8e4e1d80 HV |
154 | #if 0 |
155 | /* Code to setup square pixels, might be of some use in the future, | |
156 | but is currently unused. */ | |
157 | val = encoder->reg[0xdc]; | |
158 | if (*iarg) | |
159 | val |= 1; /* SQUARE */ | |
160 | else | |
161 | val &= ~1; /* !SQUARE */ | |
162 | bt866_write(client, 0xdc, val); | |
163 | #endif | |
164 | ||
8e4e1d80 | 165 | /* ----------------------------------------------------------------------- */ |
fbe60daa | 166 | |
8e4e1d80 HV |
167 | static const struct v4l2_subdev_video_ops bt866_video_ops = { |
168 | .s_std_output = bt866_s_std_output, | |
169 | .s_routing = bt866_s_routing, | |
170 | }; | |
fbe60daa | 171 | |
8e4e1d80 | 172 | static const struct v4l2_subdev_ops bt866_ops = { |
8e4e1d80 HV |
173 | .video = &bt866_video_ops, |
174 | }; | |
fbe60daa | 175 | |
c18fdcf6 HV |
176 | static int bt866_probe(struct i2c_client *client, |
177 | const struct i2c_device_id *id) | |
fbe60daa MS |
178 | { |
179 | struct bt866 *encoder; | |
8e4e1d80 | 180 | struct v4l2_subdev *sd; |
fbe60daa | 181 | |
c18fdcf6 HV |
182 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
183 | client->addr << 1, client->adapter->name); | |
fbe60daa | 184 | |
c02b211d | 185 | encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL); |
c18fdcf6 | 186 | if (encoder == NULL) |
fbe60daa | 187 | return -ENOMEM; |
8e4e1d80 HV |
188 | sd = &encoder->sd; |
189 | v4l2_i2c_subdev_init(sd, client, &bt866_ops); | |
fbe60daa MS |
190 | return 0; |
191 | } | |
192 | ||
c18fdcf6 | 193 | static int bt866_remove(struct i2c_client *client) |
fbe60daa | 194 | { |
8e4e1d80 HV |
195 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
196 | ||
197 | v4l2_device_unregister_subdev(sd); | |
fbe60daa MS |
198 | return 0; |
199 | } | |
200 | ||
c18fdcf6 HV |
201 | static const struct i2c_device_id bt866_id[] = { |
202 | { "bt866", 0 }, | |
203 | { } | |
204 | }; | |
205 | MODULE_DEVICE_TABLE(i2c, bt866_id); | |
206 | ||
7a49e540 HV |
207 | static struct i2c_driver bt866_driver = { |
208 | .driver = { | |
7a49e540 HV |
209 | .name = "bt866", |
210 | }, | |
211 | .probe = bt866_probe, | |
212 | .remove = bt866_remove, | |
213 | .id_table = bt866_id, | |
c18fdcf6 | 214 | }; |
7a49e540 | 215 | |
c6e8d86f | 216 | module_i2c_driver(bt866_driver); |