Pull bugzilla-5653 into release branch
[linux-2.6] / drivers / media / video / saa7185.c
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 <linux/types.h>
43
44 #include <linux/videodev.h>
45 #include <asm/uaccess.h>
46
47 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
48 MODULE_AUTHOR("Dave Perks");
49 MODULE_LICENSE("GPL");
50
51 #include <linux/i2c.h>
52
53 #define I2C_NAME(s) (s)->name
54
55 #include <linux/video_encoder.h>
56
57 static int debug = 0;
58 module_param(debug, int, 0);
59 MODULE_PARM_DESC(debug, "Debug level (0-1)");
60
61 #define dprintk(num, format, args...) \
62         do { \
63                 if (debug >= num) \
64                         printk(format, ##args); \
65         } while (0)
66
67 /* ----------------------------------------------------------------------- */
68
69 struct saa7185 {
70         unsigned char reg[128];
71
72         int norm;
73         int enable;
74         int bright;
75         int contrast;
76         int hue;
77         int sat;
78 };
79
80 #define   I2C_SAA7185        0x88
81
82 /* ----------------------------------------------------------------------- */
83
84 static inline int
85 saa7185_read (struct i2c_client *client)
86 {
87         return i2c_smbus_read_byte(client);
88 }
89
90 static int
91 saa7185_write (struct i2c_client *client,
92                u8                 reg,
93                u8                 value)
94 {
95         struct saa7185 *encoder = i2c_get_clientdata(client);
96
97         dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
98         encoder->reg[reg] = value;
99         return i2c_smbus_write_byte_data(client, reg, value);
100 }
101
102 static int
103 saa7185_write_block (struct i2c_client *client,
104                      const u8          *data,
105                      unsigned int       len)
106 {
107         int ret = -1;
108         u8 reg;
109
110         /* the adv7175 has an autoincrement function, use it if
111          * the adapter understands raw I2C */
112         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
113                 /* do raw I2C, not smbus compatible */
114                 struct saa7185 *encoder = i2c_get_clientdata(client);
115                 u8 block_data[32];
116                 int block_len;
117
118                 while (len >= 2) {
119                         block_len = 0;
120                         block_data[block_len++] = reg = data[0];
121                         do {
122                                 block_data[block_len++] =
123                                     encoder->reg[reg++] = data[1];
124                                 len -= 2;
125                                 data += 2;
126                         } while (len >= 2 && data[0] == reg &&
127                                  block_len < 32);
128                         if ((ret = i2c_master_send(client, block_data,
129                                                    block_len)) < 0)
130                                 break;
131                 }
132         } else {
133                 /* do some slow I2C emulation kind of thing */
134                 while (len >= 2) {
135                         reg = *data++;
136                         if ((ret = saa7185_write(client, reg,
137                                                  *data++)) < 0)
138                                 break;
139                         len -= 2;
140                 }
141         }
142
143         return ret;
144 }
145
146 /* ----------------------------------------------------------------------- */
147
148 static const unsigned char init_common[] = {
149         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
150                                  * YUV2C=1, MY2C=1, MUV2C=1 */
151
152         0x42, 0x6b,             /* OVLY0=107 */
153         0x43, 0x00,             /* OVLU0=0     white */
154         0x44, 0x00,             /* OVLV0=0   */
155         0x45, 0x22,             /* OVLY1=34  */
156         0x46, 0xac,             /* OVLU1=172   yellow */
157         0x47, 0x0e,             /* OVLV1=14  */
158         0x48, 0x03,             /* OVLY2=3   */
159         0x49, 0x1d,             /* OVLU2=29    cyan */
160         0x4a, 0xac,             /* OVLV2=172 */
161         0x4b, 0xf0,             /* OVLY3=240 */
162         0x4c, 0xc8,             /* OVLU3=200   green */
163         0x4d, 0xb9,             /* OVLV3=185 */
164         0x4e, 0xd4,             /* OVLY4=212 */
165         0x4f, 0x38,             /* OVLU4=56    magenta */
166         0x50, 0x47,             /* OVLV4=71  */
167         0x51, 0xc1,             /* OVLY5=193 */
168         0x52, 0xe3,             /* OVLU5=227   red */
169         0x53, 0x54,             /* OVLV5=84  */
170         0x54, 0xa3,             /* OVLY6=163 */
171         0x55, 0x54,             /* OVLU6=84    blue */
172         0x56, 0xf2,             /* OVLV6=242 */
173         0x57, 0x90,             /* OVLY7=144 */
174         0x58, 0x00,             /* OVLU7=0     black */
175         0x59, 0x00,             /* OVLV7=0   */
176
177         0x5a, 0x00,             /* CHPS=0    */
178         0x5b, 0x76,             /* GAINU=118 */
179         0x5c, 0xa5,             /* GAINV=165 */
180         0x5d, 0x3c,             /* BLCKL=60  */
181         0x5e, 0x3a,             /* BLNNL=58  */
182         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
183         0x60, 0x00,             /* NULL      */
184
185         /* 0x61 - 0x66 set according to norm */
186
187         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
188         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
189         0x69, 0x00,             /* 0 : caption 1st byte even field */
190         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
191
192         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
193         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
194                                  * CBLF=0, ORCV2=0, PRCV2=0 */
195         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
196
197         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
198                                  * least for PAL */
199         0x6f, 0x00,             /* HTRIG upper bits */
200         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
201
202         /* The following should not be needed */
203
204         0x71, 0x15,             /* BMRQ=0x115 */
205         0x72, 0x90,             /* EMRQ=0x690 */
206         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
207         0x74, 0x00,             /* NULL       */
208         0x75, 0x00,             /* NULL       */
209         0x76, 0x00,             /* NULL       */
210         0x77, 0x15,             /* BRCV=0x115 */
211         0x78, 0x90,             /* ERCV=0x690 */
212         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
213
214         /* Field length controls */
215
216         0x7a, 0x70,             /* FLC=0 */
217
218         /* The following should not be needed if SBLN = 1 */
219
220         0x7b, 0x16,             /* FAL=22 */
221         0x7c, 0x35,             /* LAL=244 */
222         0x7d, 0x20,             /* LAL=244, FAL=22 */
223 };
224
225 static const unsigned char init_pal[] = {
226         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
227                                  * YGS=1, INPI=0, DOWN=0 */
228         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
229         0x63, 0xcb,             /* FSC0 */
230         0x64, 0x8a,             /* FSC1 */
231         0x65, 0x09,             /* FSC2 */
232         0x66, 0x2a,             /* FSC3 */
233 };
234
235 static const unsigned char init_ntsc[] = {
236         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
237                                  * YGS=1, INPI=0, DOWN=0 */
238         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
239         0x63, 0x1f,             /* FSC0 */
240         0x64, 0x7c,             /* FSC1 */
241         0x65, 0xf0,             /* FSC2 */
242         0x66, 0x21,             /* FSC3 */
243 };
244
245 static int
246 saa7185_command (struct i2c_client *client,
247                  unsigned int       cmd,
248                  void              *arg)
249 {
250         struct saa7185 *encoder = i2c_get_clientdata(client);
251
252         switch (cmd) {
253
254         case 0:
255                 saa7185_write_block(client, init_common,
256                                     sizeof(init_common));
257                 switch (encoder->norm) {
258
259                 case VIDEO_MODE_NTSC:
260                         saa7185_write_block(client, init_ntsc,
261                                             sizeof(init_ntsc));
262                         break;
263
264                 case VIDEO_MODE_PAL:
265                         saa7185_write_block(client, init_pal,
266                                             sizeof(init_pal));
267                         break;
268                 }
269
270                 break;
271
272         case ENCODER_GET_CAPABILITIES:
273         {
274                 struct video_encoder_capability *cap = arg;
275
276                 cap->flags =
277                     VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
278                     VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
279                 cap->inputs = 1;
280                 cap->outputs = 1;
281         }
282                 break;
283
284         case ENCODER_SET_NORM:
285         {
286                 int *iarg = arg;
287
288                 //saa7185_write_block(client, init_common, sizeof(init_common));
289
290                 switch (*iarg) {
291
292                 case VIDEO_MODE_NTSC:
293                         saa7185_write_block(client, init_ntsc,
294                                             sizeof(init_ntsc));
295                         break;
296
297                 case VIDEO_MODE_PAL:
298                         saa7185_write_block(client, init_pal,
299                                             sizeof(init_pal));
300                         break;
301
302                 case VIDEO_MODE_SECAM:
303                 default:
304                         return -EINVAL;
305
306                 }
307                 encoder->norm = *iarg;
308         }
309                 break;
310
311         case ENCODER_SET_INPUT:
312         {
313                 int *iarg = arg;
314
315                 /* RJ: *iarg = 0: input is from SA7111
316                  *iarg = 1: input is from ZR36060 */
317
318                 switch (*iarg) {
319
320                 case 0:
321                         /* Switch RTCE to 1 */
322                         saa7185_write(client, 0x61,
323                                       (encoder->reg[0x61] & 0xf7) | 0x08);
324                         saa7185_write(client, 0x6e, 0x01);
325                         break;
326
327                 case 1:
328                         /* Switch RTCE to 0 */
329                         saa7185_write(client, 0x61,
330                                       (encoder->reg[0x61] & 0xf7) | 0x00);
331                         /* SW: a slight sync problem... */
332                         saa7185_write(client, 0x6e, 0x00);
333                         break;
334
335                 default:
336                         return -EINVAL;
337
338                 }
339         }
340                 break;
341
342         case ENCODER_SET_OUTPUT:
343         {
344                 int *iarg = arg;
345
346                 /* not much choice of outputs */
347                 if (*iarg != 0) {
348                         return -EINVAL;
349                 }
350         }
351                 break;
352
353         case ENCODER_ENABLE_OUTPUT:
354         {
355                 int *iarg = arg;
356
357                 encoder->enable = !!*iarg;
358                 saa7185_write(client, 0x61,
359                               (encoder->reg[0x61] & 0xbf) |
360                               (encoder->enable ? 0x00 : 0x40));
361         }
362                 break;
363
364         default:
365                 return -EINVAL;
366         }
367
368         return 0;
369 }
370
371 /* ----------------------------------------------------------------------- */
372
373 /*
374  * Generic i2c probe
375  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
376  */
377 static unsigned short normal_i2c[] = { I2C_SAA7185 >> 1, I2C_CLIENT_END };
378
379 static unsigned short ignore = I2C_CLIENT_END;
380
381 static struct i2c_client_address_data addr_data = {
382         .normal_i2c             = normal_i2c,
383         .probe                  = &ignore,
384         .ignore                 = &ignore,
385 };
386
387 static struct i2c_driver i2c_driver_saa7185;
388
389 static int
390 saa7185_detect_client (struct i2c_adapter *adapter,
391                        int                 address,
392                        int                 kind)
393 {
394         int i;
395         struct i2c_client *client;
396         struct saa7185 *encoder;
397
398         dprintk(1,
399                 KERN_INFO
400                 "saa7185.c: detecting saa7185 client on address 0x%x\n",
401                 address << 1);
402
403         /* Check if the adapter supports the needed features */
404         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
405                 return 0;
406
407         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
408         if (client == 0)
409                 return -ENOMEM;
410         client->addr = address;
411         client->adapter = adapter;
412         client->driver = &i2c_driver_saa7185;
413         strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
414
415         encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
416         if (encoder == NULL) {
417                 kfree(client);
418                 return -ENOMEM;
419         }
420         encoder->norm = VIDEO_MODE_NTSC;
421         encoder->enable = 1;
422         i2c_set_clientdata(client, encoder);
423
424         i = i2c_attach_client(client);
425         if (i) {
426                 kfree(client);
427                 kfree(encoder);
428                 return i;
429         }
430
431         i = saa7185_write_block(client, init_common, sizeof(init_common));
432         if (i >= 0) {
433                 i = saa7185_write_block(client, init_ntsc,
434                                         sizeof(init_ntsc));
435         }
436         if (i < 0) {
437                 dprintk(1, KERN_ERR "%s_attach: init error %d\n",
438                         I2C_NAME(client), i);
439         } else {
440                 dprintk(1,
441                         KERN_INFO
442                         "%s_attach: chip version %d at address 0x%x\n",
443                         I2C_NAME(client), saa7185_read(client) >> 5,
444                         client->addr << 1);
445         }
446
447         return 0;
448 }
449
450 static int
451 saa7185_attach_adapter (struct i2c_adapter *adapter)
452 {
453         dprintk(1,
454                 KERN_INFO
455                 "saa7185.c: starting probe for adapter %s (0x%x)\n",
456                 I2C_NAME(adapter), adapter->id);
457         return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
458 }
459
460 static int
461 saa7185_detach_client (struct i2c_client *client)
462 {
463         struct saa7185 *encoder = i2c_get_clientdata(client);
464         int err;
465
466         err = i2c_detach_client(client);
467         if (err) {
468                 return err;
469         }
470
471         saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
472         //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
473
474         kfree(encoder);
475         kfree(client);
476
477         return 0;
478 }
479
480 /* ----------------------------------------------------------------------- */
481
482 static struct i2c_driver i2c_driver_saa7185 = {
483         .driver = {
484                 .name = "saa7185",      /* name */
485         },
486
487         .id = I2C_DRIVERID_SAA7185B,
488
489         .attach_adapter = saa7185_attach_adapter,
490         .detach_client = saa7185_detach_client,
491         .command = saa7185_command,
492 };
493
494 static int __init
495 saa7185_init (void)
496 {
497         return i2c_add_driver(&i2c_driver_saa7185);
498 }
499
500 static void __exit
501 saa7185_exit (void)
502 {
503         i2c_del_driver(&i2c_driver_saa7185);
504 }
505
506 module_init(saa7185_init);
507 module_exit(saa7185_exit);