2 bt866 - BT866 Digital Video Encoder (Rockwell Part)
4 Copyright (C) 1999 Mike Bernson <mike@mlb.org>
5 Copyright (C) 1998 Dave Perks <dperks@ibm.net>
7 Modifications for LML33/DC10plus unified driver
8 Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
10 This code was modify/ported from the saa7111 driver written
13 This code was adapted for the bt866 by Christer Weinigel and ported
14 to 2.6 by Martin Samuelsson.
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.
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.
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.
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/ioctl.h>
34 #include <asm/uaccess.h>
35 #include <linux/i2c.h>
36 #include <linux/i2c-id.h>
37 #include <linux/videodev2.h>
38 #include <media/v4l2-device.h>
39 #include <media/v4l2-chip-ident.h>
40 #include <media/v4l2-i2c-drv.h>
42 MODULE_DESCRIPTION("Brooktree-866 video encoder driver");
43 MODULE_AUTHOR("Mike Bernson & Dave Perks");
44 MODULE_LICENSE("GPL");
47 module_param(debug, int, 0);
48 MODULE_PARM_DESC(debug, "Debug level (0-1)");
51 /* ----------------------------------------------------------------------- */
54 struct v4l2_subdev sd;
58 static inline struct bt866 *to_bt866(struct v4l2_subdev *sd)
60 return container_of(sd, struct bt866, sd);
63 static int bt866_write(struct bt866 *encoder, u8 subaddr, u8 data)
65 struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd);
72 encoder->reg[subaddr] = data;
74 v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data);
76 for (err = 0; err < 3;) {
77 if (i2c_master_send(client, buffer, 2) == 2)
80 v4l_warn(client, "error #%d writing to 0x%02x\n",
82 schedule_timeout_interruptible(msecs_to_jiffies(100));
85 v4l_warn(client, "giving up\n");
92 static int bt866_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
94 v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
96 /* Only PAL supported by this driver at the moment! */
97 if (!(std & V4L2_STD_NTSC))
102 static int bt866_s_routing(struct v4l2_subdev *sd,
103 u32 input, u32 output, u32 config)
105 static const __u8 init[] = {
106 0xc8, 0xcc, /* CRSCALE */
107 0xca, 0x91, /* CBSCALE */
108 0xcc, 0x24, /* YC16 | OSDNUM */
110 0xdc, 0x24, /* SETMODE | PAL */
111 0xde, 0x02, /* EACTIVE */
114 0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */
115 0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */
116 0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */
117 0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */
118 0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */
119 0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */
120 0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */
121 0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */
123 0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */
124 0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */
125 0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */
126 0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */
127 0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */
128 0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */
129 0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */
130 0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */
132 struct bt866 *encoder = to_bt866(sd);
136 for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2)
137 bt866_write(encoder, init[i], init[i+1]);
139 val = encoder->reg[0xdc];
142 val |= 0x40; /* CBSWAP */
144 val &= ~0x40; /* !CBSWAP */
146 bt866_write(encoder, 0xdc, val);
148 val = encoder->reg[0xcc];
150 val |= 0x01; /* OSDBAR */
152 val &= ~0x01; /* !OSDBAR */
153 bt866_write(encoder, 0xcc, val);
155 v4l2_dbg(1, debug, sd, "set input %d\n", input);
169 /* Code to setup square pixels, might be of some use in the future,
170 but is currently unused. */
171 val = encoder->reg[0xdc];
173 val |= 1; /* SQUARE */
175 val &= ~1; /* !SQUARE */
176 bt866_write(client, 0xdc, val);
179 static int bt866_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
181 struct i2c_client *client = v4l2_get_subdevdata(sd);
183 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT866, 0);
186 /* ----------------------------------------------------------------------- */
188 static const struct v4l2_subdev_core_ops bt866_core_ops = {
189 .g_chip_ident = bt866_g_chip_ident,
192 static const struct v4l2_subdev_video_ops bt866_video_ops = {
193 .s_std_output = bt866_s_std_output,
194 .s_routing = bt866_s_routing,
197 static const struct v4l2_subdev_ops bt866_ops = {
198 .core = &bt866_core_ops,
199 .video = &bt866_video_ops,
202 static int bt866_probe(struct i2c_client *client,
203 const struct i2c_device_id *id)
205 struct bt866 *encoder;
206 struct v4l2_subdev *sd;
208 v4l_info(client, "chip found @ 0x%x (%s)\n",
209 client->addr << 1, client->adapter->name);
211 encoder = kzalloc(sizeof(*encoder), GFP_KERNEL);
215 v4l2_i2c_subdev_init(sd, client, &bt866_ops);
219 static int bt866_remove(struct i2c_client *client)
221 struct v4l2_subdev *sd = i2c_get_clientdata(client);
223 v4l2_device_unregister_subdev(sd);
228 static const struct i2c_device_id bt866_id[] = {
232 MODULE_DEVICE_TABLE(i2c, bt866_id);
234 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
236 .probe = bt866_probe,
237 .remove = bt866_remove,
238 .id_table = bt866_id,