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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / media / video / saa7185.c
blob5f0b224c3cb63718baad675ab50e59e1be3d8064
1 /*
2 * saa7185 - Philips SAA7185B video encoder driver version 0.0.3
3 *
4 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
5 *
6 * Slight changes for video timing and attachment output by
7 * Wolfgang Scherr <scherr@net4you.net>
8 *
9 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
10 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
11 *
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.
16 *
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.
21 *
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.
25 */
26
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/delay.h>
30 #include <linux/errno.h>
31 #include <linux/fs.h>
32 #include <linux/kernel.h>
33 #include <linux/major.h>
34 #include <linux/slab.h>
35 #include <linux/mm.h>
36 #include <linux/pci.h>
37 #include <linux/signal.h>
38 #include <asm/io.h>
39 #include <asm/pgtable.h>
40 #include <asm/page.h>
41 #include <linux/sched.h>
42 #include <asm/segment.h>
43 #include <linux/types.h>
44
45 #include <linux/videodev.h>
46 #include <asm/uaccess.h>
47
48 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
49 MODULE_AUTHOR("Dave Perks");
50 MODULE_LICENSE("GPL");
51
52 #include <linux/i2c.h>
53 #include <linux/i2c-dev.h>
54
55 #define I2C_NAME(s) (s)->name
56
57 #include <linux/video_encoder.h>
58
59 static int debug = 0;
60 module_param(debug, int, 0);
61 MODULE_PARM_DESC(debug, "Debug level (0-1)");
62
63 #define dprintk(num, format, args...) \
64 do { \
65 if (debug >= num) \
66 printk(format, ##args); \
67 } while (0)
68
69 /* ----------------------------------------------------------------------- */
70
71 struct saa7185 {
72 unsigned char reg[128];
73
74 int norm;
75 int enable;
76 int bright;
77 int contrast;
78 int hue;
79 int sat;
80 };
81
82 #define I2C_SAA7185 0x88
83
84 /* ----------------------------------------------------------------------- */
85
86 static inline int
87 saa7185_read (struct i2c_client *client)
88 {
89 return i2c_smbus_read_byte(client);
90 }
91
92 static int
93 saa7185_write (struct i2c_client *client,
94 u8 reg,
95 u8 value)
96 {
97 struct saa7185 *encoder = i2c_get_clientdata(client);
98
99 dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
100 encoder->reg[reg] = value;
101 return i2c_smbus_write_byte_data(client, reg, value);
102 }
103
104 static int
105 saa7185_write_block (struct i2c_client *client,
106 const u8 *data,
107 unsigned int len)
108 {
109 int ret = -1;
110 u8 reg;
111
112 /* the adv7175 has an autoincrement function, use it if
113 * the adapter understands raw I2C */
114 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
115 /* do raw I2C, not smbus compatible */
116 struct saa7185 *encoder = i2c_get_clientdata(client);
117 struct i2c_msg msg;
118 u8 block_data[32];
119
120 msg.addr = client->addr;
121 msg.flags = 0;
122 while (len >= 2) {
123 msg.buf = (char *) block_data;
124 msg.len = 0;
125 block_data[msg.len++] = reg = data[0];
126 do {
127 block_data[msg.len++] =
128 encoder->reg[reg++] = data[1];
129 len -= 2;
130 data += 2;
131 } while (len >= 2 && data[0] == reg &&
132 msg.len < 32);
133 if ((ret = i2c_transfer(client->adapter,
134 &msg, 1)) < 0)
135 break;
136 }
137 } else {
138 /* do some slow I2C emulation kind of thing */
139 while (len >= 2) {
140 reg = *data++;
141 if ((ret = saa7185_write(client, reg,
142 *data++)) < 0)
143 break;
144 len -= 2;
145 }
146 }
147
148 return ret;
149 }
150
151 /* ----------------------------------------------------------------------- */
152
153 static const unsigned char init_common[] = {
154 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
155 * YUV2C=1, MY2C=1, MUV2C=1 */
156
157 0x42, 0x6b, /* OVLY0=107 */
158 0x43, 0x00, /* OVLU0=0 white */
159 0x44, 0x00, /* OVLV0=0 */
160 0x45, 0x22, /* OVLY1=34 */
161 0x46, 0xac, /* OVLU1=172 yellow */
162 0x47, 0x0e, /* OVLV1=14 */
163 0x48, 0x03, /* OVLY2=3 */
164 0x49, 0x1d, /* OVLU2=29 cyan */
165 0x4a, 0xac, /* OVLV2=172 */
166 0x4b, 0xf0, /* OVLY3=240 */
167 0x4c, 0xc8, /* OVLU3=200 green */
168 0x4d, 0xb9, /* OVLV3=185 */
169 0x4e, 0xd4, /* OVLY4=212 */
170 0x4f, 0x38, /* OVLU4=56 magenta */
171 0x50, 0x47, /* OVLV4=71 */
172 0x51, 0xc1, /* OVLY5=193 */
173 0x52, 0xe3, /* OVLU5=227 red */
174 0x53, 0x54, /* OVLV5=84 */
175 0x54, 0xa3, /* OVLY6=163 */
176 0x55, 0x54, /* OVLU6=84 blue */
177 0x56, 0xf2, /* OVLV6=242 */
178 0x57, 0x90, /* OVLY7=144 */
179 0x58, 0x00, /* OVLU7=0 black */
180 0x59, 0x00, /* OVLV7=0 */
181
182 0x5a, 0x00, /* CHPS=0 */
183 0x5b, 0x76, /* GAINU=118 */
184 0x5c, 0xa5, /* GAINV=165 */
185 0x5d, 0x3c, /* BLCKL=60 */
186 0x5e, 0x3a, /* BLNNL=58 */
187 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
188 0x60, 0x00, /* NULL */
189
190 /* 0x61 - 0x66 set according to norm */
191
192 0x67, 0x00, /* 0 : caption 1st byte odd field */
193 0x68, 0x00, /* 0 : caption 2nd byte odd field */
194 0x69, 0x00, /* 0 : caption 1st byte even field */
195 0x6a, 0x00, /* 0 : caption 2nd byte even field */
196
197 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
198 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
199 * CBLF=0, ORCV2=0, PRCV2=0 */
200 0x6d, 0x00, /* SRCM1=0, CCEN=0 */
201
202 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
203 * least for PAL */
204 0x6f, 0x00, /* HTRIG upper bits */
205 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
206
207 /* The following should not be needed */
208
209 0x71, 0x15, /* BMRQ=0x115 */
210 0x72, 0x90, /* EMRQ=0x690 */
211 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
212 0x74, 0x00, /* NULL */
213 0x75, 0x00, /* NULL */
214 0x76, 0x00, /* NULL */
215 0x77, 0x15, /* BRCV=0x115 */
216 0x78, 0x90, /* ERCV=0x690 */
217 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
218
219 /* Field length controls */
220
221 0x7a, 0x70, /* FLC=0 */
222
223 /* The following should not be needed if SBLN = 1 */
224
225 0x7b, 0x16, /* FAL=22 */
226 0x7c, 0x35, /* LAL=244 */
227 0x7d, 0x20, /* LAL=244, FAL=22 */
228 };
229
230 static const unsigned char init_pal[] = {
231 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
232 * YGS=1, INPI=0, DOWN=0 */
233 0x62, 0xc8, /* DECTYP=1, BSTA=72 */
234 0x63, 0xcb, /* FSC0 */
235 0x64, 0x8a, /* FSC1 */
236 0x65, 0x09, /* FSC2 */
237 0x66, 0x2a, /* FSC3 */
238 };
239
240 static const unsigned char init_ntsc[] = {
241 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
242 * YGS=1, INPI=0, DOWN=0 */
243 0x62, 0xe6, /* DECTYP=1, BSTA=102 */
244 0x63, 0x1f, /* FSC0 */
245 0x64, 0x7c, /* FSC1 */
246 0x65, 0xf0, /* FSC2 */
247 0x66, 0x21, /* FSC3 */
248 };
249
250 static int
251 saa7185_command (struct i2c_client *client,
252 unsigned int cmd,
253 void *arg)
254 {
255 struct saa7185 *encoder = i2c_get_clientdata(client);
256
257 switch (cmd) {
258
259 case 0:
260 saa7185_write_block(client, init_common,
261 sizeof(init_common));
262 switch (encoder->norm) {
263
264 case VIDEO_MODE_NTSC:
265 saa7185_write_block(client, init_ntsc,
266 sizeof(init_ntsc));
267 break;
268
269 case VIDEO_MODE_PAL:
270 saa7185_write_block(client, init_pal,
271 sizeof(init_pal));
272 break;
273 }
274
275 break;
276
277 case ENCODER_GET_CAPABILITIES:
278 {
279 struct video_encoder_capability *cap = arg;
280
281 cap->flags =
282 VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
283 VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
284 cap->inputs = 1;
285 cap->outputs = 1;
286 }
287 break;
288
289 case ENCODER_SET_NORM:
290 {
291 int *iarg = arg;
292
293 //saa7185_write_block(client, init_common, sizeof(init_common));
294
295 switch (*iarg) {
296
297 case VIDEO_MODE_NTSC:
298 saa7185_write_block(client, init_ntsc,
299 sizeof(init_ntsc));
300 break;
301
302 case VIDEO_MODE_PAL:
303 saa7185_write_block(client, init_pal,
304 sizeof(init_pal));
305 break;
306
307 case VIDEO_MODE_SECAM:
308 default:
309 return -EINVAL;
310
311 }
312 encoder->norm = *iarg;
313 }
314 break;
315
316 case ENCODER_SET_INPUT:
317 {
318 int *iarg = arg;
319
320 /* RJ: *iarg = 0: input is from SA7111
321 *iarg = 1: input is from ZR36060 */
322
323 switch (*iarg) {
324
325 case 0:
326 /* Switch RTCE to 1 */
327 saa7185_write(client, 0x61,
328 (encoder->reg[0x61] & 0xf7) | 0x08);
329 saa7185_write(client, 0x6e, 0x01);
330 break;
331
332 case 1:
333 /* Switch RTCE to 0 */
334 saa7185_write(client, 0x61,
335 (encoder->reg[0x61] & 0xf7) | 0x00);
336 /* SW: a slight sync problem... */
337 saa7185_write(client, 0x6e, 0x00);
338 break;
339
340 default:
341 return -EINVAL;
342
343 }
344 }
345 break;
346
347 case ENCODER_SET_OUTPUT:
348 {
349 int *iarg = arg;
350
351 /* not much choice of outputs */
352 if (*iarg != 0) {
353 return -EINVAL;
354 }
355 }
356 break;
357
358 case ENCODER_ENABLE_OUTPUT:
359 {
360 int *iarg = arg;
361
362 encoder->enable = !!*iarg;
363 saa7185_write(client, 0x61,
364 (encoder->reg[0x61] & 0xbf) |
365 (encoder->enable ? 0x00 : 0x40));
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[] = { I2C_SAA7185 >> 1, I2C_CLIENT_END };
383 static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
384
385 static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
386 static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
387 static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
388 static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
389 static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END };
390
391 static struct i2c_client_address_data addr_data = {
392 .normal_i2c = normal_i2c,
393 .normal_i2c_range = normal_i2c_range,
394 .probe = probe,
395 .probe_range = probe_range,
396 .ignore = ignore,
397 .ignore_range = ignore_range,
398 .force = force
399 };
400
401 static struct i2c_driver i2c_driver_saa7185;
402
403 static int
404 saa7185_detect_client (struct i2c_adapter *adapter,
405 int address,
406 int kind)
407 {
408 int i;
409 struct i2c_client *client;
410 struct saa7185 *encoder;
411
412 dprintk(1,
413 KERN_INFO
414 "saa7185.c: detecting saa7185 client on address 0x%x\n",
415 address << 1);
416
417 /* Check if the adapter supports the needed features */
418 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
419 return 0;
420
421 client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
422 if (client == 0)
423 return -ENOMEM;
424 memset(client, 0, sizeof(struct i2c_client));
425 client->addr = address;
426 client->adapter = adapter;
427 client->driver = &i2c_driver_saa7185;
428 client->flags = I2C_CLIENT_ALLOW_USE;
429 strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
430
431 encoder = kmalloc(sizeof(struct saa7185), GFP_KERNEL);
432 if (encoder == NULL) {
433 kfree(client);
434 return -ENOMEM;
435 }
436 memset(encoder, 0, sizeof(struct saa7185));
437 encoder->norm = VIDEO_MODE_NTSC;
438 encoder->enable = 1;
439 i2c_set_clientdata(client, encoder);
440
441 i = i2c_attach_client(client);
442 if (i) {
443 kfree(client);
444 kfree(encoder);
445 return i;
446 }
447
448 i = saa7185_write_block(client, init_common, sizeof(init_common));
449 if (i >= 0) {
450 i = saa7185_write_block(client, init_ntsc,
451 sizeof(init_ntsc));
452 }
453 if (i < 0) {
454 dprintk(1, KERN_ERR "%s_attach: init error %d\n",
455 I2C_NAME(client), i);
456 } else {
457 dprintk(1,
458 KERN_INFO
459 "%s_attach: chip version %d at address 0x%x\n",
460 I2C_NAME(client), saa7185_read(client) >> 5,
461 client->addr << 1);
462 }
463
464 return 0;
465 }
466
467 static int
468 saa7185_attach_adapter (struct i2c_adapter *adapter)
469 {
470 dprintk(1,
471 KERN_INFO
472 "saa7185.c: starting probe for adapter %s (0x%x)\n",
473 I2C_NAME(adapter), adapter->id);
474 return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
475 }
476
477 static int
478 saa7185_detach_client (struct i2c_client *client)
479 {
480 struct saa7185 *encoder = i2c_get_clientdata(client);
481 int err;
482
483 err = i2c_detach_client(client);
484 if (err) {
485 return err;
486 }
487
488 saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */
489 //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
490
491 kfree(encoder);
492 kfree(client);
493
494 return 0;
495 }
496
497 /* ----------------------------------------------------------------------- */
498
499 static struct i2c_driver i2c_driver_saa7185 = {
500 .owner = THIS_MODULE,
501 .name = "saa7185", /* name */
502
503 .id = I2C_DRIVERID_SAA7185B,
504 .flags = I2C_DF_NOTIFY,
505
506 .attach_adapter = saa7185_attach_adapter,
507 .detach_client = saa7185_detach_client,
508 .command = saa7185_command,
509 };
510
511 static int __init
512 saa7185_init (void)
513 {
514 return i2c_add_driver(&i2c_driver_saa7185);
515 }
516
517 static void __exit
518 saa7185_exit (void)
519 {
520 i2c_del_driver(&i2c_driver_saa7185);
521 }
522
523 module_init(saa7185_init);
524 module_exit(saa7185_exit);
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