2 * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1
4 * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
6 * Based on adv7176 driver by:
8 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
9 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
10 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
11 * - some corrections for Pinnacle Systems Inc. DC10plus card.
13 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
14 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
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-legacy.h>
42 MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
43 MODULE_AUTHOR("Maxim Yevtyushkin");
44 MODULE_LICENSE("GPL");
46 static unsigned short normal_i2c[] = {
47 0xd4 >> 1, 0xd6 >> 1, /* adv7170 IDs */
48 0x54 >> 1, 0x56 >> 1, /* adv7171 IDs */
55 module_param(debug, int, 0);
56 MODULE_PARM_DESC(debug, "Debug level (0-1)");
58 /* ----------------------------------------------------------------------- */
61 struct v4l2_subdev sd;
62 unsigned char reg[128];
68 static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd)
70 return container_of(sd, struct adv7170, sd);
73 static char *inputs[] = { "pass_through", "play_back" };
75 /* ----------------------------------------------------------------------- */
77 static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value)
79 struct i2c_client *client = v4l2_get_subdevdata(sd);
80 struct adv7170 *encoder = to_adv7170(sd);
82 encoder->reg[reg] = value;
83 return i2c_smbus_write_byte_data(client, reg, value);
86 static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg)
88 struct i2c_client *client = v4l2_get_subdevdata(sd);
90 return i2c_smbus_read_byte_data(client, reg);
93 static int adv7170_write_block(struct v4l2_subdev *sd,
94 const u8 *data, unsigned int len)
96 struct i2c_client *client = v4l2_get_subdevdata(sd);
97 struct adv7170 *encoder = to_adv7170(sd);
101 /* the adv7170 has an autoincrement function, use it if
102 * the adapter understands raw I2C */
103 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
104 /* do raw I2C, not smbus compatible */
110 block_data[block_len++] = reg = data[0];
112 block_data[block_len++] =
113 encoder->reg[reg++] = data[1];
116 } while (len >= 2 && data[0] == reg && block_len < 32);
117 ret = i2c_master_send(client, block_data, block_len);
122 /* do some slow I2C emulation kind of thing */
125 ret = adv7170_write(sd, reg, *data++);
134 /* ----------------------------------------------------------------------- */
142 static const unsigned char init_NTSC[] = {
143 0x00, 0x10, /* MR0 */
144 0x01, 0x20, /* MR1 */
145 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */
146 0x03, 0x80, /* MR3 */
147 0x04, 0x30, /* MR4 */
148 0x05, 0x00, /* Reserved */
149 0x06, 0x00, /* Reserved */
150 0x07, TR0MODE, /* TM0 */
151 0x08, TR1CAPT, /* TM1 */
152 0x09, 0x16, /* Fsc0 */
153 0x0a, 0x7c, /* Fsc1 */
154 0x0b, 0xf0, /* Fsc2 */
155 0x0c, 0x21, /* Fsc3 */
156 0x0d, 0x00, /* Subcarrier Phase */
157 0x0e, 0x00, /* Closed Capt. Ext 0 */
158 0x0f, 0x00, /* Closed Capt. Ext 1 */
159 0x10, 0x00, /* Closed Capt. 0 */
160 0x11, 0x00, /* Closed Capt. 1 */
161 0x12, 0x00, /* Pedestal Ctl 0 */
162 0x13, 0x00, /* Pedestal Ctl 1 */
163 0x14, 0x00, /* Pedestal Ctl 2 */
164 0x15, 0x00, /* Pedestal Ctl 3 */
165 0x16, 0x00, /* CGMS_WSS_0 */
166 0x17, 0x00, /* CGMS_WSS_1 */
167 0x18, 0x00, /* CGMS_WSS_2 */
168 0x19, 0x00, /* Teletext Ctl */
171 static const unsigned char init_PAL[] = {
172 0x00, 0x71, /* MR0 */
173 0x01, 0x20, /* MR1 */
174 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */
175 0x03, 0x80, /* MR3 */
176 0x04, 0x30, /* MR4 */
177 0x05, 0x00, /* Reserved */
178 0x06, 0x00, /* Reserved */
179 0x07, TR0MODE, /* TM0 */
180 0x08, TR1CAPT, /* TM1 */
181 0x09, 0xcb, /* Fsc0 */
182 0x0a, 0x8a, /* Fsc1 */
183 0x0b, 0x09, /* Fsc2 */
184 0x0c, 0x2a, /* Fsc3 */
185 0x0d, 0x00, /* Subcarrier Phase */
186 0x0e, 0x00, /* Closed Capt. Ext 0 */
187 0x0f, 0x00, /* Closed Capt. Ext 1 */
188 0x10, 0x00, /* Closed Capt. 0 */
189 0x11, 0x00, /* Closed Capt. 1 */
190 0x12, 0x00, /* Pedestal Ctl 0 */
191 0x13, 0x00, /* Pedestal Ctl 1 */
192 0x14, 0x00, /* Pedestal Ctl 2 */
193 0x15, 0x00, /* Pedestal Ctl 3 */
194 0x16, 0x00, /* CGMS_WSS_0 */
195 0x17, 0x00, /* CGMS_WSS_1 */
196 0x18, 0x00, /* CGMS_WSS_2 */
197 0x19, 0x00, /* Teletext Ctl */
201 static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
203 struct adv7170 *encoder = to_adv7170(sd);
205 v4l2_dbg(1, debug, sd, "set norm %llx\n", std);
207 if (std & V4L2_STD_NTSC) {
208 adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
209 if (encoder->input == 0)
210 adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
211 adv7170_write(sd, 0x07, TR0MODE | TR0RST);
212 adv7170_write(sd, 0x07, TR0MODE);
213 } else if (std & V4L2_STD_PAL) {
214 adv7170_write_block(sd, init_PAL, sizeof(init_PAL));
215 if (encoder->input == 0)
216 adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
217 adv7170_write(sd, 0x07, TR0MODE | TR0RST);
218 adv7170_write(sd, 0x07, TR0MODE);
220 v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", std);
223 v4l2_dbg(1, debug, sd, "switched to %llx\n", std);
228 static int adv7170_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
230 struct adv7170 *encoder = to_adv7170(sd);
232 /* RJ: route->input = 0: input is from decoder
233 route->input = 1: input is from ZR36060
234 route->input = 2: color bar */
236 v4l2_dbg(1, debug, sd, "set input from %s\n",
237 route->input == 0 ? "decoder" : "ZR36060");
239 switch (route->input) {
241 adv7170_write(sd, 0x01, 0x20);
242 adv7170_write(sd, 0x08, TR1CAPT); /* TR1 */
243 adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
244 adv7170_write(sd, 0x07, TR0MODE | TR0RST);
245 adv7170_write(sd, 0x07, TR0MODE);
250 adv7170_write(sd, 0x01, 0x00);
251 adv7170_write(sd, 0x08, TR1PLAY); /* TR1 */
252 adv7170_write(sd, 0x02, 0x08);
253 adv7170_write(sd, 0x07, TR0MODE | TR0RST);
254 adv7170_write(sd, 0x07, TR0MODE);
259 v4l2_dbg(1, debug, sd, "illegal input: %d\n", route->input);
262 v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[route->input]);
263 encoder->input = route->input;
267 static int adv7170_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
269 struct i2c_client *client = v4l2_get_subdevdata(sd);
271 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT866, 0);
274 static int adv7170_command(struct i2c_client *client, unsigned cmd, void *arg)
276 return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
279 /* ----------------------------------------------------------------------- */
281 static const struct v4l2_subdev_core_ops adv7170_core_ops = {
282 .g_chip_ident = adv7170_g_chip_ident,
285 static const struct v4l2_subdev_video_ops adv7170_video_ops = {
286 .s_std_output = adv7170_s_std_output,
287 .s_routing = adv7170_s_routing,
290 static const struct v4l2_subdev_ops adv7170_ops = {
291 .core = &adv7170_core_ops,
292 .video = &adv7170_video_ops,
295 /* ----------------------------------------------------------------------- */
297 static int adv7170_probe(struct i2c_client *client,
298 const struct i2c_device_id *id)
300 struct adv7170 *encoder;
301 struct v4l2_subdev *sd;
304 /* Check if the adapter supports the needed features */
305 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
308 v4l_info(client, "chip found @ 0x%x (%s)\n",
309 client->addr << 1, client->adapter->name);
311 encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL);
315 v4l2_i2c_subdev_init(sd, client, &adv7170_ops);
316 encoder->norm = V4L2_STD_NTSC;
319 i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
321 i = adv7170_write(sd, 0x07, TR0MODE | TR0RST);
322 i = adv7170_write(sd, 0x07, TR0MODE);
323 i = adv7170_read(sd, 0x12);
324 v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
327 v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
331 static int adv7170_remove(struct i2c_client *client)
333 struct v4l2_subdev *sd = i2c_get_clientdata(client);
335 v4l2_device_unregister_subdev(sd);
336 kfree(to_adv7170(sd));
340 /* ----------------------------------------------------------------------- */
342 static const struct i2c_device_id adv7170_id[] = {
347 MODULE_DEVICE_TABLE(i2c, adv7170_id);
349 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
351 .driverid = I2C_DRIVERID_ADV7170,
352 .command = adv7170_command,
353 .probe = adv7170_probe,
354 .remove = adv7170_remove,
355 .id_table = adv7170_id,