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1da177e4 LT |
1 | /* |
2 | * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 | |
3 | * | |
4 | * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com> | |
5 | * | |
6 | * Based on adv7176 driver by: | |
7 | * | |
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. | |
12 | * | |
13 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> | |
14 | * - moved over to linux>=2.4.x i2c protocol (1/1/2003) | |
15 | * | |
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. | |
20 | * | |
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. | |
25 | * | |
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. | |
29 | */ | |
30 | ||
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/errno.h> | |
35 | #include <linux/fs.h> | |
36 | #include <linux/kernel.h> | |
37 | #include <linux/major.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/pci.h> | |
41 | #include <linux/signal.h> | |
42 | #include <asm/io.h> | |
43 | #include <asm/pgtable.h> | |
44 | #include <asm/page.h> | |
45 | #include <linux/sched.h> | |
46 | #include <asm/segment.h> | |
47 | #include <linux/types.h> | |
48 | ||
49 | #include <linux/videodev.h> | |
50 | #include <asm/uaccess.h> | |
51 | ||
52 | MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver"); | |
53 | MODULE_AUTHOR("Maxim Yevtyushkin"); | |
54 | MODULE_LICENSE("GPL"); | |
55 | ||
56 | #include <linux/i2c.h> | |
57 | #include <linux/i2c-dev.h> | |
58 | ||
59 | #define I2C_NAME(x) (x)->name | |
60 | ||
61 | #include <linux/video_encoder.h> | |
62 | ||
63 | static int debug = 0; | |
64 | module_param(debug, int, 0); | |
65 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
66 | ||
67 | #define dprintk(num, format, args...) \ | |
68 | do { \ | |
69 | if (debug >= num) \ | |
70 | printk(format, ##args); \ | |
71 | } while (0) | |
72 | ||
73 | /* ----------------------------------------------------------------------- */ | |
74 | ||
75 | struct adv7170 { | |
76 | unsigned char reg[128]; | |
77 | ||
78 | int norm; | |
79 | int input; | |
80 | int enable; | |
81 | int bright; | |
82 | int contrast; | |
83 | int hue; | |
84 | int sat; | |
85 | }; | |
86 | ||
87 | #define I2C_ADV7170 0xd4 | |
88 | #define I2C_ADV7171 0x54 | |
89 | ||
90 | static char adv7170_name[] = "adv7170"; | |
91 | static char adv7171_name[] = "adv7171"; | |
92 | ||
93 | static char *inputs[] = { "pass_through", "play_back" }; | |
94 | static char *norms[] = { "PAL", "NTSC" }; | |
95 | ||
96 | /* ----------------------------------------------------------------------- */ | |
97 | ||
98 | static inline int | |
99 | adv7170_write (struct i2c_client *client, | |
100 | u8 reg, | |
101 | u8 value) | |
102 | { | |
103 | struct adv7170 *encoder = i2c_get_clientdata(client); | |
104 | ||
105 | encoder->reg[reg] = value; | |
106 | return i2c_smbus_write_byte_data(client, reg, value); | |
107 | } | |
108 | ||
109 | static inline int | |
110 | adv7170_read (struct i2c_client *client, | |
111 | u8 reg) | |
112 | { | |
113 | return i2c_smbus_read_byte_data(client, reg); | |
114 | } | |
115 | ||
116 | static int | |
117 | adv7170_write_block (struct i2c_client *client, | |
118 | const u8 *data, | |
119 | unsigned int len) | |
120 | { | |
121 | int ret = -1; | |
122 | u8 reg; | |
123 | ||
124 | /* the adv7170 has an autoincrement function, use it if | |
125 | * the adapter understands raw I2C */ | |
126 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
127 | /* do raw I2C, not smbus compatible */ | |
128 | struct adv7170 *encoder = i2c_get_clientdata(client); | |
129 | struct i2c_msg msg; | |
130 | u8 block_data[32]; | |
131 | ||
132 | msg.addr = client->addr; | |
133 | msg.flags = 0; | |
134 | while (len >= 2) { | |
135 | msg.buf = (char *) block_data; | |
136 | msg.len = 0; | |
137 | block_data[msg.len++] = reg = data[0]; | |
138 | do { | |
139 | block_data[msg.len++] = | |
140 | encoder->reg[reg++] = data[1]; | |
141 | len -= 2; | |
142 | data += 2; | |
143 | } while (len >= 2 && data[0] == reg && | |
144 | msg.len < 32); | |
145 | if ((ret = i2c_transfer(client->adapter, | |
146 | &msg, 1)) < 0) | |
147 | break; | |
148 | } | |
149 | } else { | |
150 | /* do some slow I2C emulation kind of thing */ | |
151 | while (len >= 2) { | |
152 | reg = *data++; | |
153 | if ((ret = adv7170_write(client, reg, | |
154 | *data++)) < 0) | |
155 | break; | |
156 | len -= 2; | |
157 | } | |
158 | } | |
159 | ||
160 | return ret; | |
161 | } | |
162 | ||
163 | /* ----------------------------------------------------------------------- */ | |
164 | // Output filter: S-Video Composite | |
165 | ||
166 | #define MR050 0x11 //0x09 | |
167 | #define MR060 0x14 //0x0c | |
168 | ||
169 | //--------------------------------------------------------------------------- | |
170 | ||
171 | #define TR0MODE 0x4c | |
172 | #define TR0RST 0x80 | |
173 | ||
174 | #define TR1CAPT 0x00 | |
175 | #define TR1PLAY 0x00 | |
176 | ||
177 | ||
178 | static const unsigned char init_NTSC[] = { | |
179 | 0x00, 0x10, // MR0 | |
180 | 0x01, 0x20, // MR1 | |
181 | 0x02, 0x0e, // MR2 RTC control: bits 2 and 1 | |
182 | 0x03, 0x80, // MR3 | |
183 | 0x04, 0x30, // MR4 | |
184 | 0x05, 0x00, // Reserved | |
185 | 0x06, 0x00, // Reserved | |
186 | 0x07, TR0MODE, // TM0 | |
187 | 0x08, TR1CAPT, // TM1 | |
188 | 0x09, 0x16, // Fsc0 | |
189 | 0x0a, 0x7c, // Fsc1 | |
190 | 0x0b, 0xf0, // Fsc2 | |
191 | 0x0c, 0x21, // Fsc3 | |
192 | 0x0d, 0x00, // Subcarrier Phase | |
193 | 0x0e, 0x00, // Closed Capt. Ext 0 | |
194 | 0x0f, 0x00, // Closed Capt. Ext 1 | |
195 | 0x10, 0x00, // Closed Capt. 0 | |
196 | 0x11, 0x00, // Closed Capt. 1 | |
197 | 0x12, 0x00, // Pedestal Ctl 0 | |
198 | 0x13, 0x00, // Pedestal Ctl 1 | |
199 | 0x14, 0x00, // Pedestal Ctl 2 | |
200 | 0x15, 0x00, // Pedestal Ctl 3 | |
201 | 0x16, 0x00, // CGMS_WSS_0 | |
202 | 0x17, 0x00, // CGMS_WSS_1 | |
203 | 0x18, 0x00, // CGMS_WSS_2 | |
204 | 0x19, 0x00, // Teletext Ctl | |
205 | }; | |
206 | ||
207 | static const unsigned char init_PAL[] = { | |
208 | 0x00, 0x71, // MR0 | |
209 | 0x01, 0x20, // MR1 | |
210 | 0x02, 0x0e, // MR2 RTC control: bits 2 and 1 | |
211 | 0x03, 0x80, // MR3 | |
212 | 0x04, 0x30, // MR4 | |
213 | 0x05, 0x00, // Reserved | |
214 | 0x06, 0x00, // Reserved | |
215 | 0x07, TR0MODE, // TM0 | |
216 | 0x08, TR1CAPT, // TM1 | |
217 | 0x09, 0xcb, // Fsc0 | |
218 | 0x0a, 0x8a, // Fsc1 | |
219 | 0x0b, 0x09, // Fsc2 | |
220 | 0x0c, 0x2a, // Fsc3 | |
221 | 0x0d, 0x00, // Subcarrier Phase | |
222 | 0x0e, 0x00, // Closed Capt. Ext 0 | |
223 | 0x0f, 0x00, // Closed Capt. Ext 1 | |
224 | 0x10, 0x00, // Closed Capt. 0 | |
225 | 0x11, 0x00, // Closed Capt. 1 | |
226 | 0x12, 0x00, // Pedestal Ctl 0 | |
227 | 0x13, 0x00, // Pedestal Ctl 1 | |
228 | 0x14, 0x00, // Pedestal Ctl 2 | |
229 | 0x15, 0x00, // Pedestal Ctl 3 | |
230 | 0x16, 0x00, // CGMS_WSS_0 | |
231 | 0x17, 0x00, // CGMS_WSS_1 | |
232 | 0x18, 0x00, // CGMS_WSS_2 | |
233 | 0x19, 0x00, // Teletext Ctl | |
234 | }; | |
235 | ||
236 | ||
237 | static int | |
238 | adv7170_command (struct i2c_client *client, | |
239 | unsigned int cmd, | |
240 | void * arg) | |
241 | { | |
242 | struct adv7170 *encoder = i2c_get_clientdata(client); | |
243 | ||
244 | switch (cmd) { | |
245 | ||
246 | case 0: | |
247 | #if 0 | |
248 | /* This is just for testing!!! */ | |
249 | adv7170_write_block(client, init_common, | |
250 | sizeof(init_common)); | |
251 | adv7170_write(client, 0x07, TR0MODE | TR0RST); | |
252 | adv7170_write(client, 0x07, TR0MODE); | |
253 | #endif | |
254 | break; | |
255 | ||
256 | case ENCODER_GET_CAPABILITIES: | |
257 | { | |
258 | struct video_encoder_capability *cap = arg; | |
259 | ||
260 | cap->flags = VIDEO_ENCODER_PAL | | |
261 | VIDEO_ENCODER_NTSC; | |
262 | cap->inputs = 2; | |
263 | cap->outputs = 1; | |
264 | } | |
265 | break; | |
266 | ||
267 | case ENCODER_SET_NORM: | |
268 | { | |
269 | int iarg = *(int *) arg; | |
270 | ||
271 | dprintk(1, KERN_DEBUG "%s_command: set norm %d", | |
272 | I2C_NAME(client), iarg); | |
273 | ||
274 | switch (iarg) { | |
275 | ||
276 | case VIDEO_MODE_NTSC: | |
277 | adv7170_write_block(client, init_NTSC, | |
278 | sizeof(init_NTSC)); | |
279 | if (encoder->input == 0) | |
280 | adv7170_write(client, 0x02, 0x0e); // Enable genlock | |
281 | adv7170_write(client, 0x07, TR0MODE | TR0RST); | |
282 | adv7170_write(client, 0x07, TR0MODE); | |
283 | break; | |
284 | ||
285 | case VIDEO_MODE_PAL: | |
286 | adv7170_write_block(client, init_PAL, | |
287 | sizeof(init_PAL)); | |
288 | if (encoder->input == 0) | |
289 | adv7170_write(client, 0x02, 0x0e); // Enable genlock | |
290 | adv7170_write(client, 0x07, TR0MODE | TR0RST); | |
291 | adv7170_write(client, 0x07, TR0MODE); | |
292 | break; | |
293 | ||
294 | default: | |
295 | dprintk(1, KERN_ERR "%s: illegal norm: %d\n", | |
296 | I2C_NAME(client), iarg); | |
297 | return -EINVAL; | |
298 | ||
299 | } | |
300 | dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client), | |
301 | norms[iarg]); | |
302 | encoder->norm = iarg; | |
303 | } | |
304 | break; | |
305 | ||
306 | case ENCODER_SET_INPUT: | |
307 | { | |
308 | int iarg = *(int *) arg; | |
309 | ||
310 | /* RJ: *iarg = 0: input is from decoder | |
311 | *iarg = 1: input is from ZR36060 | |
312 | *iarg = 2: color bar */ | |
313 | ||
314 | dprintk(1, KERN_DEBUG "%s_command: set input from %s\n", | |
315 | I2C_NAME(client), | |
316 | iarg == 0 ? "decoder" : "ZR36060"); | |
317 | ||
318 | switch (iarg) { | |
319 | ||
320 | case 0: | |
321 | adv7170_write(client, 0x01, 0x20); | |
322 | adv7170_write(client, 0x08, TR1CAPT); /* TR1 */ | |
323 | adv7170_write(client, 0x02, 0x0e); // Enable genlock | |
324 | adv7170_write(client, 0x07, TR0MODE | TR0RST); | |
325 | adv7170_write(client, 0x07, TR0MODE); | |
326 | //udelay(10); | |
327 | break; | |
328 | ||
329 | case 1: | |
330 | adv7170_write(client, 0x01, 0x00); | |
331 | adv7170_write(client, 0x08, TR1PLAY); /* TR1 */ | |
332 | adv7170_write(client, 0x02, 0x08); | |
333 | adv7170_write(client, 0x07, TR0MODE | TR0RST); | |
334 | adv7170_write(client, 0x07, TR0MODE); | |
335 | //udelay(10); | |
336 | break; | |
337 | ||
338 | default: | |
339 | dprintk(1, KERN_ERR "%s: illegal input: %d\n", | |
340 | I2C_NAME(client), iarg); | |
341 | return -EINVAL; | |
342 | ||
343 | } | |
344 | dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client), | |
345 | inputs[iarg]); | |
346 | encoder->input = iarg; | |
347 | } | |
348 | break; | |
349 | ||
350 | case ENCODER_SET_OUTPUT: | |
351 | { | |
352 | int *iarg = arg; | |
353 | ||
354 | /* not much choice of outputs */ | |
355 | if (*iarg != 0) { | |
356 | return -EINVAL; | |
357 | } | |
358 | } | |
359 | break; | |
360 | ||
361 | case ENCODER_ENABLE_OUTPUT: | |
362 | { | |
363 | int *iarg = arg; | |
364 | ||
365 | encoder->enable = !!*iarg; | |
366 | } | |
367 | break; | |
368 | ||
369 | default: | |
370 | return -EINVAL; | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | /* ----------------------------------------------------------------------- */ | |
377 | ||
378 | /* | |
379 | * Generic i2c probe | |
380 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
381 | */ | |
382 | static unsigned short normal_i2c[] = | |
383 | { I2C_ADV7170 >> 1, (I2C_ADV7170 >> 1) + 1, | |
384 | I2C_ADV7171 >> 1, (I2C_ADV7171 >> 1) + 1, | |
385 | I2C_CLIENT_END | |
386 | }; | |
387 | static unsigned short normal_i2c_range[] = { I2C_CLIENT_END }; | |
388 | ||
389 | static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; | |
390 | static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; | |
391 | static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; | |
392 | static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; | |
393 | static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END }; | |
394 | ||
395 | static struct i2c_client_address_data addr_data = { | |
396 | .normal_i2c = normal_i2c, | |
397 | .normal_i2c_range = normal_i2c_range, | |
398 | .probe = probe, | |
399 | .probe_range = probe_range, | |
400 | .ignore = ignore, | |
401 | .ignore_range = ignore_range, | |
402 | .force = force | |
403 | }; | |
404 | ||
405 | static struct i2c_driver i2c_driver_adv7170; | |
406 | ||
407 | static int | |
408 | adv7170_detect_client (struct i2c_adapter *adapter, | |
409 | int address, | |
410 | int kind) | |
411 | { | |
412 | int i; | |
413 | struct i2c_client *client; | |
414 | struct adv7170 *encoder; | |
415 | char *dname; | |
416 | ||
417 | dprintk(1, | |
418 | KERN_INFO | |
419 | "adv7170.c: detecting adv7170 client on address 0x%x\n", | |
420 | address << 1); | |
421 | ||
422 | /* Check if the adapter supports the needed features */ | |
423 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
424 | return 0; | |
425 | ||
426 | client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); | |
427 | if (client == 0) | |
428 | return -ENOMEM; | |
429 | memset(client, 0, sizeof(struct i2c_client)); | |
430 | client->addr = address; | |
431 | client->adapter = adapter; | |
432 | client->driver = &i2c_driver_adv7170; | |
433 | client->flags = I2C_CLIENT_ALLOW_USE; | |
434 | if ((client->addr == I2C_ADV7170 >> 1) || | |
435 | (client->addr == (I2C_ADV7170 >> 1) + 1)) { | |
436 | dname = adv7170_name; | |
437 | } else if ((client->addr == I2C_ADV7171 >> 1) || | |
438 | (client->addr == (I2C_ADV7171 >> 1) + 1)) { | |
439 | dname = adv7171_name; | |
440 | } else { | |
441 | /* We should never get here!!! */ | |
442 | kfree(client); | |
443 | return 0; | |
444 | } | |
445 | strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client))); | |
446 | ||
447 | encoder = kmalloc(sizeof(struct adv7170), GFP_KERNEL); | |
448 | if (encoder == NULL) { | |
449 | kfree(client); | |
450 | return -ENOMEM; | |
451 | } | |
452 | memset(encoder, 0, sizeof(struct adv7170)); | |
453 | encoder->norm = VIDEO_MODE_NTSC; | |
454 | encoder->input = 0; | |
455 | encoder->enable = 1; | |
456 | i2c_set_clientdata(client, encoder); | |
457 | ||
458 | i = i2c_attach_client(client); | |
459 | if (i) { | |
460 | kfree(client); | |
461 | kfree(encoder); | |
462 | return i; | |
463 | } | |
464 | ||
465 | i = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC)); | |
466 | if (i >= 0) { | |
467 | i = adv7170_write(client, 0x07, TR0MODE | TR0RST); | |
468 | i = adv7170_write(client, 0x07, TR0MODE); | |
469 | i = adv7170_read(client, 0x12); | |
470 | dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%02x\n", | |
471 | I2C_NAME(client), i & 1, client->addr << 1); | |
472 | } | |
473 | if (i < 0) { | |
474 | dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", | |
475 | I2C_NAME(client), i); | |
476 | } | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | static int | |
482 | adv7170_attach_adapter (struct i2c_adapter *adapter) | |
483 | { | |
484 | dprintk(1, | |
485 | KERN_INFO | |
486 | "adv7170.c: starting probe for adapter %s (0x%x)\n", | |
487 | I2C_NAME(adapter), adapter->id); | |
488 | return i2c_probe(adapter, &addr_data, &adv7170_detect_client); | |
489 | } | |
490 | ||
491 | static int | |
492 | adv7170_detach_client (struct i2c_client *client) | |
493 | { | |
494 | struct adv7170 *encoder = i2c_get_clientdata(client); | |
495 | int err; | |
496 | ||
497 | err = i2c_detach_client(client); | |
498 | if (err) { | |
499 | return err; | |
500 | } | |
501 | ||
502 | kfree(encoder); | |
503 | kfree(client); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | /* ----------------------------------------------------------------------- */ | |
509 | ||
510 | static struct i2c_driver i2c_driver_adv7170 = { | |
511 | .owner = THIS_MODULE, | |
512 | .name = "adv7170", /* name */ | |
513 | ||
514 | .id = I2C_DRIVERID_ADV7170, | |
515 | .flags = I2C_DF_NOTIFY, | |
516 | ||
517 | .attach_adapter = adv7170_attach_adapter, | |
518 | .detach_client = adv7170_detach_client, | |
519 | .command = adv7170_command, | |
520 | }; | |
521 | ||
522 | static int __init | |
523 | adv7170_init (void) | |
524 | { | |
525 | return i2c_add_driver(&i2c_driver_adv7170); | |
526 | } | |
527 | ||
528 | static void __exit | |
529 | adv7170_exit (void) | |
530 | { | |
531 | i2c_del_driver(&i2c_driver_adv7170); | |
532 | } | |
533 | ||
534 | module_init(adv7170_init); | |
535 | module_exit(adv7170_exit); |