2 * adv7175 - adv7175a video encoder driver version 0.0.3
4 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
5 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
6 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
7 * - some corrections for Pinnacle Systems Inc. DC10plus card.
9 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
10 * - moved over to linux>=2.4.x i2c protocol (9/9/2002)
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/delay.h>
30 #include <linux/errno.h>
32 #include <linux/kernel.h>
33 #include <linux/major.h>
34 #include <linux/slab.h>
36 #include <linux/pci.h>
37 #include <linux/signal.h>
39 #include <asm/pgtable.h>
41 #include <linux/sched.h>
42 #include <linux/types.h>
44 #include <linux/videodev.h>
45 #include <asm/uaccess.h>
47 MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
48 MODULE_AUTHOR("Dave Perks");
49 MODULE_LICENSE("GPL");
51 #include <linux/i2c.h>
53 #define I2C_NAME(s) (s)->name
55 #include <linux/video_encoder.h>
58 module_param(debug, int, 0);
59 MODULE_PARM_DESC(debug, "Debug level (0-1)");
61 #define dprintk(num, format, args...) \
64 printk(format, ##args); \
67 /* ----------------------------------------------------------------------- */
70 unsigned char reg[128];
81 #define I2C_ADV7175 0xd4
82 #define I2C_ADV7176 0x54
84 static char adv7175_name[] = "adv7175";
85 static char adv7176_name[] = "adv7176";
87 static char *inputs[] = { "pass_through", "play_back", "color_bar" };
88 static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
90 /* ----------------------------------------------------------------------- */
93 adv7175_write (struct i2c_client *client,
97 struct adv7175 *encoder = i2c_get_clientdata(client);
99 encoder->reg[reg] = value;
100 return i2c_smbus_write_byte_data(client, reg, value);
104 adv7175_read (struct i2c_client *client,
107 return i2c_smbus_read_byte_data(client, reg);
111 adv7175_write_block (struct i2c_client *client,
118 /* the adv7175 has an autoincrement function, use it if
119 * the adapter understands raw I2C */
120 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
121 /* do raw I2C, not smbus compatible */
122 struct adv7175 *encoder = i2c_get_clientdata(client);
126 msg.addr = client->addr;
129 msg.buf = (char *) block_data;
131 block_data[msg.len++] = reg = data[0];
133 block_data[msg.len++] =
134 encoder->reg[reg++] = data[1];
137 } while (len >= 2 && data[0] == reg &&
139 if ((ret = i2c_transfer(client->adapter,
144 /* do some slow I2C emulation kind of thing */
147 if ((ret = adv7175_write(client, reg,
158 set_subcarrier_freq (struct i2c_client *client,
161 /* for some reason pass_through NTSC needs
162 * a different sub-carrier freq to remain stable. */
164 adv7175_write(client, 0x02, 0x00);
166 adv7175_write(client, 0x02, 0x55);
168 adv7175_write(client, 0x03, 0x55);
169 adv7175_write(client, 0x04, 0x55);
170 adv7175_write(client, 0x05, 0x25);
175 dump (struct i2c_client *client)
177 struct adv7175 *encoder = i2c_get_clientdata(client);
180 printk(KERN_INFO "%s: registry dump\n", I2C_NAME(client));
181 for (i = 0; i < 182 / 8; i++) {
182 printk("%s: 0x%02x -", I2C_NAME(client), i * 8);
183 for (j = 0; j < 8; j++) {
184 printk(" 0x%02x", encoder->reg[i * 8 + j]);
191 /* ----------------------------------------------------------------------- */
192 // Output filter: S-Video Composite
194 #define MR050 0x11 //0x09
195 #define MR060 0x14 //0x0c
197 //---------------------------------------------------------------------------
205 static const unsigned char init_common[] = {
207 0x00, MR050, /* MR0, PAL enabled */
208 0x01, 0x00, /* MR1 */
209 0x02, 0x0c, /* subc. freq. */
210 0x03, 0x8c, /* subc. freq. */
211 0x04, 0x79, /* subc. freq. */
212 0x05, 0x26, /* subc. freq. */
213 0x06, 0x40, /* subc. phase */
215 0x07, TR0MODE, /* TR0, 16bit */
220 0x0c, TR1CAPT, /* TR1 */
221 0x0d, 0x4f, /* MR2 */
228 static const unsigned char init_pal[] = {
229 0x00, MR050, /* MR0, PAL enabled */
230 0x01, 0x00, /* MR1 */
231 0x02, 0x0c, /* subc. freq. */
232 0x03, 0x8c, /* subc. freq. */
233 0x04, 0x79, /* subc. freq. */
234 0x05, 0x26, /* subc. freq. */
235 0x06, 0x40, /* subc. phase */
238 static const unsigned char init_ntsc[] = {
239 0x00, MR060, /* MR0, NTSC enabled */
240 0x01, 0x00, /* MR1 */
241 0x02, 0x55, /* subc. freq. */
242 0x03, 0x55, /* subc. freq. */
243 0x04, 0x55, /* subc. freq. */
244 0x05, 0x25, /* subc. freq. */
245 0x06, 0x1a, /* subc. phase */
249 adv7175_command (struct i2c_client *client,
253 struct adv7175 *encoder = i2c_get_clientdata(client);
258 /* This is just for testing!!! */
259 adv7175_write_block(client, init_common,
260 sizeof(init_common));
261 adv7175_write(client, 0x07, TR0MODE | TR0RST);
262 adv7175_write(client, 0x07, TR0MODE);
265 case ENCODER_GET_CAPABILITIES:
267 struct video_encoder_capability *cap = arg;
269 cap->flags = VIDEO_ENCODER_PAL |
271 VIDEO_ENCODER_SECAM; /* well, hacky */
277 case ENCODER_SET_NORM:
279 int iarg = *(int *) arg;
283 case VIDEO_MODE_NTSC:
284 adv7175_write_block(client, init_ntsc,
286 if (encoder->input == 0)
287 adv7175_write(client, 0x0d, 0x4f); // Enable genlock
288 adv7175_write(client, 0x07, TR0MODE | TR0RST);
289 adv7175_write(client, 0x07, TR0MODE);
293 adv7175_write_block(client, init_pal,
295 if (encoder->input == 0)
296 adv7175_write(client, 0x0d, 0x4f); // Enable genlock
297 adv7175_write(client, 0x07, TR0MODE | TR0RST);
298 adv7175_write(client, 0x07, TR0MODE);
301 case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM.
302 /* This is an attempt to convert
303 * SECAM->PAL (typically it does not work
304 * due to genlock: when decoder is in SECAM
305 * and encoder in in PAL the subcarrier can
306 * not be syncronized with horizontal
308 adv7175_write_block(client, init_pal,
310 if (encoder->input == 0)
311 adv7175_write(client, 0x0d, 0x49); // Disable genlock
312 adv7175_write(client, 0x07, TR0MODE | TR0RST);
313 adv7175_write(client, 0x07, TR0MODE);
316 dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
317 I2C_NAME(client), iarg);
321 dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
323 encoder->norm = iarg;
327 case ENCODER_SET_INPUT:
329 int iarg = *(int *) arg;
331 /* RJ: *iarg = 0: input is from SAA7110
332 *iarg = 1: input is from ZR36060
333 *iarg = 2: color bar */
338 adv7175_write(client, 0x01, 0x00);
340 if (encoder->norm == VIDEO_MODE_NTSC)
341 set_subcarrier_freq(client, 1);
343 adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */
344 if (encoder->norm == VIDEO_MODE_SECAM)
345 adv7175_write(client, 0x0d, 0x49); // Disable genlock
347 adv7175_write(client, 0x0d, 0x4f); // Enable genlock
348 adv7175_write(client, 0x07, TR0MODE | TR0RST);
349 adv7175_write(client, 0x07, TR0MODE);
354 adv7175_write(client, 0x01, 0x00);
356 if (encoder->norm == VIDEO_MODE_NTSC)
357 set_subcarrier_freq(client, 0);
359 adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */
360 adv7175_write(client, 0x0d, 0x49);
361 adv7175_write(client, 0x07, TR0MODE | TR0RST);
362 adv7175_write(client, 0x07, TR0MODE);
367 adv7175_write(client, 0x01, 0x80);
369 if (encoder->norm == VIDEO_MODE_NTSC)
370 set_subcarrier_freq(client, 0);
372 adv7175_write(client, 0x0d, 0x49);
373 adv7175_write(client, 0x07, TR0MODE | TR0RST);
374 adv7175_write(client, 0x07, TR0MODE);
379 dprintk(1, KERN_ERR "%s: illegal input: %d\n",
380 I2C_NAME(client), iarg);
384 dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
386 encoder->input = iarg;
390 case ENCODER_SET_OUTPUT:
394 /* not much choice of outputs */
401 case ENCODER_ENABLE_OUTPUT:
405 encoder->enable = !!*iarg;
424 /* ----------------------------------------------------------------------- */
428 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
430 static unsigned short normal_i2c[] =
431 { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
432 I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
436 static unsigned short ignore = I2C_CLIENT_END;
438 static struct i2c_client_address_data addr_data = {
439 .normal_i2c = normal_i2c,
444 static struct i2c_driver i2c_driver_adv7175;
447 adv7175_detect_client (struct i2c_adapter *adapter,
452 struct i2c_client *client;
453 struct adv7175 *encoder;
458 "adv7175.c: detecting adv7175 client on address 0x%x\n",
461 /* Check if the adapter supports the needed features */
462 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
465 client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
468 client->addr = address;
469 client->adapter = adapter;
470 client->driver = &i2c_driver_adv7175;
471 if ((client->addr == I2C_ADV7175 >> 1) ||
472 (client->addr == (I2C_ADV7175 >> 1) + 1)) {
473 dname = adv7175_name;
474 } else if ((client->addr == I2C_ADV7176 >> 1) ||
475 (client->addr == (I2C_ADV7176 >> 1) + 1)) {
476 dname = adv7176_name;
478 /* We should never get here!!! */
482 strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
484 encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
485 if (encoder == NULL) {
489 encoder->norm = VIDEO_MODE_PAL;
492 i2c_set_clientdata(client, encoder);
494 i = i2c_attach_client(client);
501 i = adv7175_write_block(client, init_common, sizeof(init_common));
503 i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
504 i = adv7175_write(client, 0x07, TR0MODE);
505 i = adv7175_read(client, 0x12);
506 dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n",
507 I2C_NAME(client), i & 1, client->addr << 1);
510 dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
511 I2C_NAME(client), i);
518 adv7175_attach_adapter (struct i2c_adapter *adapter)
522 "adv7175.c: starting probe for adapter %s (0x%x)\n",
523 I2C_NAME(adapter), adapter->id);
524 return i2c_probe(adapter, &addr_data, &adv7175_detect_client);
528 adv7175_detach_client (struct i2c_client *client)
530 struct adv7175 *encoder = i2c_get_clientdata(client);
533 err = i2c_detach_client(client);
544 /* ----------------------------------------------------------------------- */
546 static struct i2c_driver i2c_driver_adv7175 = {
548 .name = "adv7175", /* name */
551 .id = I2C_DRIVERID_ADV7175,
553 .attach_adapter = adv7175_attach_adapter,
554 .detach_client = adv7175_detach_client,
555 .command = adv7175_command,
561 return i2c_add_driver(&i2c_driver_adv7175);
567 i2c_del_driver(&i2c_driver_adv7175);
570 module_init(adv7175_init);
571 module_exit(adv7175_exit);