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 <asm/segment.h>
43 #include <linux/types.h>
45 #include <linux/videodev.h>
46 #include <asm/uaccess.h>
48 MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
49 MODULE_AUTHOR("Dave Perks");
50 MODULE_LICENSE("GPL");
52 #include <linux/i2c.h>
53 #include <linux/i2c-dev.h>
55 #define I2C_NAME(s) (s)->name
57 #include <linux/video_encoder.h>
60 MODULE_PARM(debug, "i");
61 MODULE_PARM_DESC(debug, "Debug level (0-1)");
63 #define dprintk(num, format, args...) \
66 printk(format, ##args); \
69 /* ----------------------------------------------------------------------- */
72 unsigned char reg[128];
83 #define I2C_ADV7175 0xd4
84 #define I2C_ADV7176 0x54
86 static char adv7175_name[] = "adv7175";
87 static char adv7176_name[] = "adv7176";
89 static char *inputs[] = { "pass_through", "play_back", "color_bar" };
90 static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
92 /* ----------------------------------------------------------------------- */
95 adv7175_write (struct i2c_client *client,
99 struct adv7175 *encoder = i2c_get_clientdata(client);
101 encoder->reg[reg] = value;
102 return i2c_smbus_write_byte_data(client, reg, value);
106 adv7175_read (struct i2c_client *client,
109 return i2c_smbus_read_byte_data(client, reg);
113 adv7175_write_block (struct i2c_client *client,
120 /* the adv7175 has an autoincrement function, use it if
121 * the adapter understands raw I2C */
122 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
123 /* do raw I2C, not smbus compatible */
124 struct adv7175 *encoder = i2c_get_clientdata(client);
128 msg.addr = client->addr;
129 msg.flags = client->flags;
131 msg.buf = (char *) block_data;
133 block_data[msg.len++] = reg = data[0];
135 block_data[msg.len++] =
136 encoder->reg[reg++] = data[1];
139 } while (len >= 2 && data[0] == reg &&
141 if ((ret = i2c_transfer(client->adapter,
146 /* do some slow I2C emulation kind of thing */
149 if ((ret = adv7175_write(client, reg,
161 dump (struct i2c_client *client)
163 struct adv7175 *encoder = i2c_get_clientdata(client);
166 printk(KERN_INFO "%s: registry dump\n", I2C_NAME(client));
167 for (i = 0; i < 182 / 8; i++) {
168 printk("%s: 0x%02x -", I2C_NAME(client), i * 8);
169 for (j = 0; j < 8; j++) {
170 printk(" 0x%02x", encoder->reg[i * 8 + j]);
177 /* ----------------------------------------------------------------------- */
178 // Output filter: S-Video Composite
180 #define MR050 0x11 //0x09
181 #define MR060 0x14 //0x0c
183 //---------------------------------------------------------------------------
191 static const unsigned char init_common[] = {
193 0x00, MR050, /* MR0, PAL enabled */
194 0x01, 0x00, /* MR1 */
195 0x02, 0x0c, /* subc. freq. */
196 0x03, 0x8c, /* subc. freq. */
197 0x04, 0x79, /* subc. freq. */
198 0x05, 0x26, /* subc. freq. */
199 0x06, 0x40, /* subc. phase */
201 0x07, TR0MODE, /* TR0, 16bit */
206 0x0c, TR1CAPT, /* TR1 */
207 0x0d, 0x4f, /* MR2 */
214 static const unsigned char init_pal[] = {
215 0x00, MR050, /* MR0, PAL enabled */
216 0x01, 0x00, /* MR1 */
217 0x02, 0x0c, /* subc. freq. */
218 0x03, 0x8c, /* subc. freq. */
219 0x04, 0x79, /* subc. freq. */
220 0x05, 0x26, /* subc. freq. */
221 0x06, 0x40, /* subc. phase */
224 static const unsigned char init_ntsc[] = {
225 0x00, MR060, /* MR0, NTSC enabled */
226 0x01, 0x00, /* MR1 */
227 0x02, 0x55, /* subc. freq. */
228 0x03, 0x55, /* subc. freq. */
229 0x04, 0x55, /* subc. freq. */
230 0x05, 0x25, /* subc. freq. */
231 0x06, 0x1a, /* subc. phase */
235 adv7175_command (struct i2c_client *client,
239 struct adv7175 *encoder = i2c_get_clientdata(client);
244 /* This is just for testing!!! */
245 adv7175_write_block(client, init_common,
246 sizeof(init_common));
247 adv7175_write(client, 0x07, TR0MODE | TR0RST);
248 adv7175_write(client, 0x07, TR0MODE);
251 case ENCODER_GET_CAPABILITIES:
253 struct video_encoder_capability *cap = arg;
255 cap->flags = VIDEO_ENCODER_PAL |
257 VIDEO_ENCODER_SECAM; /* well, hacky */
263 case ENCODER_SET_NORM:
265 int iarg = *(int *) arg;
269 case VIDEO_MODE_NTSC:
270 adv7175_write_block(client, init_ntsc,
272 if (encoder->input == 0)
273 adv7175_write(client, 0x0d, 0x4f); // Enable genlock
274 adv7175_write(client, 0x07, TR0MODE | TR0RST);
275 adv7175_write(client, 0x07, TR0MODE);
279 adv7175_write_block(client, init_pal,
281 if (encoder->input == 0)
282 adv7175_write(client, 0x0d, 0x4f); // Enable genlock
283 adv7175_write(client, 0x07, TR0MODE | TR0RST);
284 adv7175_write(client, 0x07, TR0MODE);
287 case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM.
288 /* This is an attempt to convert
289 * SECAM->PAL (typically it does not work
290 * due to genlock: when decoder is in SECAM
291 * and encoder in in PAL the subcarrier can
292 * not be syncronized with horizontal
294 adv7175_write_block(client, init_pal,
296 if (encoder->input == 0)
297 adv7175_write(client, 0x0d, 0x49); // Disable genlock
298 adv7175_write(client, 0x07, TR0MODE | TR0RST);
299 adv7175_write(client, 0x07, TR0MODE);
302 dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
303 I2C_NAME(client), iarg);
307 dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
309 encoder->norm = iarg;
313 case ENCODER_SET_INPUT:
315 int iarg = *(int *) arg;
317 /* RJ: *iarg = 0: input is from SAA7110
318 *iarg = 1: input is from ZR36060
319 *iarg = 2: color bar */
324 adv7175_write(client, 0x01, 0x00);
325 adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */
326 if (encoder->norm == VIDEO_MODE_SECAM)
327 adv7175_write(client, 0x0d, 0x49); // Disable genlock
329 adv7175_write(client, 0x0d, 0x4f); // Enable genlock
330 adv7175_write(client, 0x07, TR0MODE | TR0RST);
331 adv7175_write(client, 0x07, TR0MODE);
336 adv7175_write(client, 0x01, 0x00);
337 adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */
338 adv7175_write(client, 0x0d, 0x49);
339 adv7175_write(client, 0x07, TR0MODE | TR0RST);
340 adv7175_write(client, 0x07, TR0MODE);
345 adv7175_write(client, 0x01, 0x80);
346 adv7175_write(client, 0x0d, 0x49);
347 adv7175_write(client, 0x07, TR0MODE | TR0RST);
348 adv7175_write(client, 0x07, TR0MODE);
353 dprintk(1, KERN_ERR "%s: illegal input: %d\n",
354 I2C_NAME(client), iarg);
358 dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
360 encoder->input = iarg;
364 case ENCODER_SET_OUTPUT:
368 /* not much choice of outputs */
375 case ENCODER_ENABLE_OUTPUT:
379 encoder->enable = !!*iarg;
398 /* ----------------------------------------------------------------------- */
402 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
404 static unsigned short normal_i2c[] =
405 { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
406 I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
409 static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
411 static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
412 static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
413 static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
414 static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
415 static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END };
417 static struct i2c_client_address_data addr_data = {
418 .normal_i2c = normal_i2c,
419 .normal_i2c_range = normal_i2c_range,
421 .probe_range = probe_range,
423 .ignore_range = ignore_range,
427 static int adv7175_i2c_id = 0;
428 static struct i2c_driver i2c_driver_adv7175;
431 adv7175_detect_client (struct i2c_adapter *adapter,
436 struct i2c_client *client;
437 struct adv7175 *encoder;
442 "adv7175.c: detecting adv7175 client on address 0x%x\n",
445 /* Check if the adapter supports the needed features */
446 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
449 client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
452 memset(client, 0, sizeof(struct i2c_client));
453 client->addr = address;
454 client->adapter = adapter;
455 client->driver = &i2c_driver_adv7175;
456 client->flags = I2C_CLIENT_ALLOW_USE;
457 client->id = adv7175_i2c_id++;
458 if ((client->addr == I2C_ADV7175 >> 1) ||
459 (client->addr == (I2C_ADV7175 >> 1) + 1)) {
460 dname = adv7175_name;
461 } else if ((client->addr == I2C_ADV7176 >> 1) ||
462 (client->addr == (I2C_ADV7176 >> 1) + 1)) {
463 dname = adv7176_name;
465 /* We should never get here!!! */
469 snprintf(I2C_NAME(client), sizeof(I2C_NAME(client)) - 1,
470 "%s[%d]", dname, client->id);
472 encoder = kmalloc(sizeof(struct adv7175), GFP_KERNEL);
473 if (encoder == NULL) {
477 memset(encoder, 0, sizeof(struct adv7175));
478 encoder->norm = VIDEO_MODE_PAL;
481 i2c_set_clientdata(client, encoder);
483 i = i2c_attach_client(client);
490 i = adv7175_write_block(client, init_common, sizeof(init_common));
492 i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
493 i = adv7175_write(client, 0x07, TR0MODE);
494 i = adv7175_read(client, 0x12);
495 dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n",
496 I2C_NAME(client), i & 1, client->addr << 1);
499 dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
500 I2C_NAME(client), i);
507 adv7175_attach_adapter (struct i2c_adapter *adapter)
511 "adv7175.c: starting probe for adapter %s (0x%x)\n",
512 I2C_NAME(adapter), adapter->id);
513 return i2c_probe(adapter, &addr_data, &adv7175_detect_client);
517 adv7175_detach_client (struct i2c_client *client)
519 struct adv7175 *encoder = i2c_get_clientdata(client);
522 err = i2c_detach_client(client);
533 /* ----------------------------------------------------------------------- */
535 static struct i2c_driver i2c_driver_adv7175 = {
536 .owner = THIS_MODULE,
537 .name = "adv7175", /* name */
539 .id = I2C_DRIVERID_ADV7175,
540 .flags = I2C_DF_NOTIFY,
542 .attach_adapter = adv7175_attach_adapter,
543 .detach_client = adv7175_detach_client,
544 .command = adv7175_command,
550 return i2c_add_driver(&i2c_driver_adv7175);
556 i2c_del_driver(&i2c_driver_adv7175);
559 module_init(adv7175_init);
560 module_exit(adv7175_exit);