V4L/DVB (6440): tuner: convert analog tuner demod sub-modules to dvb_frontend interface
[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/signal.h>
37 #include <linux/types.h>
38 #include <linux/i2c.h>
39 #include <asm/io.h>
40 #include <asm/pgtable.h>
41 #include <asm/page.h>
42 #include <asm/uaccess.h>
43
44 #include <linux/videodev.h>
45 #include <linux/video_encoder.h>
46
47 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
48 MODULE_AUTHOR("Dave Perks");
49 MODULE_LICENSE("GPL");
50
51
52 #define I2C_NAME(s) (s)->name
53
54
55 static int debug = 0;
56 module_param(debug, int, 0);
57 MODULE_PARM_DESC(debug, "Debug level (0-1)");
58
59 #define dprintk(num, format, args...) \
60         do { \
61                 if (debug >= num) \
62                         printk(format, ##args); \
63         } while (0)
64
65 /* ----------------------------------------------------------------------- */
66
67 struct saa7185 {
68         unsigned char reg[128];
69
70         int norm;
71         int enable;
72         int bright;
73         int contrast;
74         int hue;
75         int sat;
76 };
77
78 #define   I2C_SAA7185        0x88
79
80 /* ----------------------------------------------------------------------- */
81
82 static inline int
83 saa7185_read (struct i2c_client *client)
84 {
85         return i2c_smbus_read_byte(client);
86 }
87
88 static int
89 saa7185_write (struct i2c_client *client,
90                u8                 reg,
91                u8                 value)
92 {
93         struct saa7185 *encoder = i2c_get_clientdata(client);
94
95         dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
96         encoder->reg[reg] = value;
97         return i2c_smbus_write_byte_data(client, reg, value);
98 }
99
100 static int
101 saa7185_write_block (struct i2c_client *client,
102                      const u8          *data,
103                      unsigned int       len)
104 {
105         int ret = -1;
106         u8 reg;
107
108         /* the adv7175 has an autoincrement function, use it if
109          * the adapter understands raw I2C */
110         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
111                 /* do raw I2C, not smbus compatible */
112                 struct saa7185 *encoder = i2c_get_clientdata(client);
113                 u8 block_data[32];
114                 int block_len;
115
116                 while (len >= 2) {
117                         block_len = 0;
118                         block_data[block_len++] = reg = data[0];
119                         do {
120                                 block_data[block_len++] =
121                                     encoder->reg[reg++] = data[1];
122                                 len -= 2;
123                                 data += 2;
124                         } while (len >= 2 && data[0] == reg &&
125                                  block_len < 32);
126                         if ((ret = i2c_master_send(client, block_data,
127                                                    block_len)) < 0)
128                                 break;
129                 }
130         } else {
131                 /* do some slow I2C emulation kind of thing */
132                 while (len >= 2) {
133                         reg = *data++;
134                         if ((ret = saa7185_write(client, reg,
135                                                  *data++)) < 0)
136                                 break;
137                         len -= 2;
138                 }
139         }
140
141         return ret;
142 }
143
144 /* ----------------------------------------------------------------------- */
145
146 static const unsigned char init_common[] = {
147         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
148                                  * YUV2C=1, MY2C=1, MUV2C=1 */
149
150         0x42, 0x6b,             /* OVLY0=107 */
151         0x43, 0x00,             /* OVLU0=0     white */
152         0x44, 0x00,             /* OVLV0=0   */
153         0x45, 0x22,             /* OVLY1=34  */
154         0x46, 0xac,             /* OVLU1=172   yellow */
155         0x47, 0x0e,             /* OVLV1=14  */
156         0x48, 0x03,             /* OVLY2=3   */
157         0x49, 0x1d,             /* OVLU2=29    cyan */
158         0x4a, 0xac,             /* OVLV2=172 */
159         0x4b, 0xf0,             /* OVLY3=240 */
160         0x4c, 0xc8,             /* OVLU3=200   green */
161         0x4d, 0xb9,             /* OVLV3=185 */
162         0x4e, 0xd4,             /* OVLY4=212 */
163         0x4f, 0x38,             /* OVLU4=56    magenta */
164         0x50, 0x47,             /* OVLV4=71  */
165         0x51, 0xc1,             /* OVLY5=193 */
166         0x52, 0xe3,             /* OVLU5=227   red */
167         0x53, 0x54,             /* OVLV5=84  */
168         0x54, 0xa3,             /* OVLY6=163 */
169         0x55, 0x54,             /* OVLU6=84    blue */
170         0x56, 0xf2,             /* OVLV6=242 */
171         0x57, 0x90,             /* OVLY7=144 */
172         0x58, 0x00,             /* OVLU7=0     black */
173         0x59, 0x00,             /* OVLV7=0   */
174
175         0x5a, 0x00,             /* CHPS=0    */
176         0x5b, 0x76,             /* GAINU=118 */
177         0x5c, 0xa5,             /* GAINV=165 */
178         0x5d, 0x3c,             /* BLCKL=60  */
179         0x5e, 0x3a,             /* BLNNL=58  */
180         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
181         0x60, 0x00,             /* NULL      */
182
183         /* 0x61 - 0x66 set according to norm */
184
185         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
186         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
187         0x69, 0x00,             /* 0 : caption 1st byte even field */
188         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
189
190         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
191         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
192                                  * CBLF=0, ORCV2=0, PRCV2=0 */
193         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
194
195         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
196                                  * least for PAL */
197         0x6f, 0x00,             /* HTRIG upper bits */
198         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
199
200         /* The following should not be needed */
201
202         0x71, 0x15,             /* BMRQ=0x115 */
203         0x72, 0x90,             /* EMRQ=0x690 */
204         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
205         0x74, 0x00,             /* NULL       */
206         0x75, 0x00,             /* NULL       */
207         0x76, 0x00,             /* NULL       */
208         0x77, 0x15,             /* BRCV=0x115 */
209         0x78, 0x90,             /* ERCV=0x690 */
210         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
211
212         /* Field length controls */
213
214         0x7a, 0x70,             /* FLC=0 */
215
216         /* The following should not be needed if SBLN = 1 */
217
218         0x7b, 0x16,             /* FAL=22 */
219         0x7c, 0x35,             /* LAL=244 */
220         0x7d, 0x20,             /* LAL=244, FAL=22 */
221 };
222
223 static const unsigned char init_pal[] = {
224         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
225                                  * YGS=1, INPI=0, DOWN=0 */
226         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
227         0x63, 0xcb,             /* FSC0 */
228         0x64, 0x8a,             /* FSC1 */
229         0x65, 0x09,             /* FSC2 */
230         0x66, 0x2a,             /* FSC3 */
231 };
232
233 static const unsigned char init_ntsc[] = {
234         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
235                                  * YGS=1, INPI=0, DOWN=0 */
236         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
237         0x63, 0x1f,             /* FSC0 */
238         0x64, 0x7c,             /* FSC1 */
239         0x65, 0xf0,             /* FSC2 */
240         0x66, 0x21,             /* FSC3 */
241 };
242
243 static int
244 saa7185_command (struct i2c_client *client,
245                  unsigned int       cmd,
246                  void              *arg)
247 {
248         struct saa7185 *encoder = i2c_get_clientdata(client);
249
250         switch (cmd) {
251
252         case 0:
253                 saa7185_write_block(client, init_common,
254                                     sizeof(init_common));
255                 switch (encoder->norm) {
256
257                 case VIDEO_MODE_NTSC:
258                         saa7185_write_block(client, init_ntsc,
259                                             sizeof(init_ntsc));
260                         break;
261
262                 case VIDEO_MODE_PAL:
263                         saa7185_write_block(client, init_pal,
264                                             sizeof(init_pal));
265                         break;
266                 }
267
268                 break;
269
270         case ENCODER_GET_CAPABILITIES:
271         {
272                 struct video_encoder_capability *cap = arg;
273
274                 cap->flags =
275                     VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
276                     VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
277                 cap->inputs = 1;
278                 cap->outputs = 1;
279         }
280                 break;
281
282         case ENCODER_SET_NORM:
283         {
284                 int *iarg = arg;
285
286                 //saa7185_write_block(client, init_common, sizeof(init_common));
287
288                 switch (*iarg) {
289
290                 case VIDEO_MODE_NTSC:
291                         saa7185_write_block(client, init_ntsc,
292                                             sizeof(init_ntsc));
293                         break;
294
295                 case VIDEO_MODE_PAL:
296                         saa7185_write_block(client, init_pal,
297                                             sizeof(init_pal));
298                         break;
299
300                 case VIDEO_MODE_SECAM:
301                 default:
302                         return -EINVAL;
303
304                 }
305                 encoder->norm = *iarg;
306         }
307                 break;
308
309         case ENCODER_SET_INPUT:
310         {
311                 int *iarg = arg;
312
313                 /* RJ: *iarg = 0: input is from SA7111
314                  *iarg = 1: input is from ZR36060 */
315
316                 switch (*iarg) {
317
318                 case 0:
319                         /* Switch RTCE to 1 */
320                         saa7185_write(client, 0x61,
321                                       (encoder->reg[0x61] & 0xf7) | 0x08);
322                         saa7185_write(client, 0x6e, 0x01);
323                         break;
324
325                 case 1:
326                         /* Switch RTCE to 0 */
327                         saa7185_write(client, 0x61,
328                                       (encoder->reg[0x61] & 0xf7) | 0x00);
329                         /* SW: a slight sync problem... */
330                         saa7185_write(client, 0x6e, 0x00);
331                         break;
332
333                 default:
334                         return -EINVAL;
335
336                 }
337         }
338                 break;
339
340         case ENCODER_SET_OUTPUT:
341         {
342                 int *iarg = arg;
343
344                 /* not much choice of outputs */
345                 if (*iarg != 0) {
346                         return -EINVAL;
347                 }
348         }
349                 break;
350
351         case ENCODER_ENABLE_OUTPUT:
352         {
353                 int *iarg = arg;
354
355                 encoder->enable = !!*iarg;
356                 saa7185_write(client, 0x61,
357                               (encoder->reg[0x61] & 0xbf) |
358                               (encoder->enable ? 0x00 : 0x40));
359         }
360                 break;
361
362         default:
363                 return -EINVAL;
364         }
365
366         return 0;
367 }
368
369 /* ----------------------------------------------------------------------- */
370
371 /*
372  * Generic i2c probe
373  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
374  */
375 static unsigned short normal_i2c[] = { I2C_SAA7185 >> 1, I2C_CLIENT_END };
376
377 static unsigned short ignore = I2C_CLIENT_END;
378
379 static struct i2c_client_address_data addr_data = {
380         .normal_i2c             = normal_i2c,
381         .probe                  = &ignore,
382         .ignore                 = &ignore,
383 };
384
385 static struct i2c_driver i2c_driver_saa7185;
386
387 static int
388 saa7185_detect_client (struct i2c_adapter *adapter,
389                        int                 address,
390                        int                 kind)
391 {
392         int i;
393         struct i2c_client *client;
394         struct saa7185 *encoder;
395
396         dprintk(1,
397                 KERN_INFO
398                 "saa7185.c: detecting saa7185 client on address 0x%x\n",
399                 address << 1);
400
401         /* Check if the adapter supports the needed features */
402         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
403                 return 0;
404
405         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
406         if (client == 0)
407                 return -ENOMEM;
408         client->addr = address;
409         client->adapter = adapter;
410         client->driver = &i2c_driver_saa7185;
411         strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
412
413         encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
414         if (encoder == NULL) {
415                 kfree(client);
416                 return -ENOMEM;
417         }
418         encoder->norm = VIDEO_MODE_NTSC;
419         encoder->enable = 1;
420         i2c_set_clientdata(client, encoder);
421
422         i = i2c_attach_client(client);
423         if (i) {
424                 kfree(client);
425                 kfree(encoder);
426                 return i;
427         }
428
429         i = saa7185_write_block(client, init_common, sizeof(init_common));
430         if (i >= 0) {
431                 i = saa7185_write_block(client, init_ntsc,
432                                         sizeof(init_ntsc));
433         }
434         if (i < 0) {
435                 dprintk(1, KERN_ERR "%s_attach: init error %d\n",
436                         I2C_NAME(client), i);
437         } else {
438                 dprintk(1,
439                         KERN_INFO
440                         "%s_attach: chip version %d at address 0x%x\n",
441                         I2C_NAME(client), saa7185_read(client) >> 5,
442                         client->addr << 1);
443         }
444
445         return 0;
446 }
447
448 static int
449 saa7185_attach_adapter (struct i2c_adapter *adapter)
450 {
451         dprintk(1,
452                 KERN_INFO
453                 "saa7185.c: starting probe for adapter %s (0x%x)\n",
454                 I2C_NAME(adapter), adapter->id);
455         return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
456 }
457
458 static int
459 saa7185_detach_client (struct i2c_client *client)
460 {
461         struct saa7185 *encoder = i2c_get_clientdata(client);
462         int err;
463
464         err = i2c_detach_client(client);
465         if (err) {
466                 return err;
467         }
468
469         saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
470         //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
471
472         kfree(encoder);
473         kfree(client);
474
475         return 0;
476 }
477
478 /* ----------------------------------------------------------------------- */
479
480 static struct i2c_driver i2c_driver_saa7185 = {
481         .driver = {
482                 .name = "saa7185",      /* name */
483         },
484
485         .id = I2C_DRIVERID_SAA7185B,
486
487         .attach_adapter = saa7185_attach_adapter,
488         .detach_client = saa7185_detach_client,
489         .command = saa7185_command,
490 };
491
492 static int __init
493 saa7185_init (void)
494 {
495         return i2c_add_driver(&i2c_driver_saa7185);
496 }
497
498 static void __exit
499 saa7185_exit (void)
500 {
501         i2c_del_driver(&i2c_driver_saa7185);
502 }
503
504 module_init(saa7185_init);
505 module_exit(saa7185_exit);