V4L/DVB (5367): Pvrusb2: (trivial) Fix too-wide source line
[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/types.h>
42
43 #include <linux/videodev.h>
44 #include <asm/uaccess.h>
45
46 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
47 MODULE_AUTHOR("Dave Perks");
48 MODULE_LICENSE("GPL");
49
50 #include <linux/i2c.h>
51
52 #define I2C_NAME(s) (s)->name
53
54 #include <linux/video_encoder.h>
55
56 static int debug = 0;
57 module_param(debug, int, 0);
58 MODULE_PARM_DESC(debug, "Debug level (0-1)");
59
60 #define dprintk(num, format, args...) \
61         do { \
62                 if (debug >= num) \
63                         printk(format, ##args); \
64         } while (0)
65
66 /* ----------------------------------------------------------------------- */
67
68 struct saa7185 {
69         unsigned char reg[128];
70
71         int norm;
72         int enable;
73         int bright;
74         int contrast;
75         int hue;
76         int sat;
77 };
78
79 #define   I2C_SAA7185        0x88
80
81 /* ----------------------------------------------------------------------- */
82
83 static inline int
84 saa7185_read (struct i2c_client *client)
85 {
86         return i2c_smbus_read_byte(client);
87 }
88
89 static int
90 saa7185_write (struct i2c_client *client,
91                u8                 reg,
92                u8                 value)
93 {
94         struct saa7185 *encoder = i2c_get_clientdata(client);
95
96         dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
97         encoder->reg[reg] = value;
98         return i2c_smbus_write_byte_data(client, reg, value);
99 }
100
101 static int
102 saa7185_write_block (struct i2c_client *client,
103                      const u8          *data,
104                      unsigned int       len)
105 {
106         int ret = -1;
107         u8 reg;
108
109         /* the adv7175 has an autoincrement function, use it if
110          * the adapter understands raw I2C */
111         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
112                 /* do raw I2C, not smbus compatible */
113                 struct saa7185 *encoder = i2c_get_clientdata(client);
114                 u8 block_data[32];
115                 int block_len;
116
117                 while (len >= 2) {
118                         block_len = 0;
119                         block_data[block_len++] = reg = data[0];
120                         do {
121                                 block_data[block_len++] =
122                                     encoder->reg[reg++] = data[1];
123                                 len -= 2;
124                                 data += 2;
125                         } while (len >= 2 && data[0] == reg &&
126                                  block_len < 32);
127                         if ((ret = i2c_master_send(client, block_data,
128                                                    block_len)) < 0)
129                                 break;
130                 }
131         } else {
132                 /* do some slow I2C emulation kind of thing */
133                 while (len >= 2) {
134                         reg = *data++;
135                         if ((ret = saa7185_write(client, reg,
136                                                  *data++)) < 0)
137                                 break;
138                         len -= 2;
139                 }
140         }
141
142         return ret;
143 }
144
145 /* ----------------------------------------------------------------------- */
146
147 static const unsigned char init_common[] = {
148         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
149                                  * YUV2C=1, MY2C=1, MUV2C=1 */
150
151         0x42, 0x6b,             /* OVLY0=107 */
152         0x43, 0x00,             /* OVLU0=0     white */
153         0x44, 0x00,             /* OVLV0=0   */
154         0x45, 0x22,             /* OVLY1=34  */
155         0x46, 0xac,             /* OVLU1=172   yellow */
156         0x47, 0x0e,             /* OVLV1=14  */
157         0x48, 0x03,             /* OVLY2=3   */
158         0x49, 0x1d,             /* OVLU2=29    cyan */
159         0x4a, 0xac,             /* OVLV2=172 */
160         0x4b, 0xf0,             /* OVLY3=240 */
161         0x4c, 0xc8,             /* OVLU3=200   green */
162         0x4d, 0xb9,             /* OVLV3=185 */
163         0x4e, 0xd4,             /* OVLY4=212 */
164         0x4f, 0x38,             /* OVLU4=56    magenta */
165         0x50, 0x47,             /* OVLV4=71  */
166         0x51, 0xc1,             /* OVLY5=193 */
167         0x52, 0xe3,             /* OVLU5=227   red */
168         0x53, 0x54,             /* OVLV5=84  */
169         0x54, 0xa3,             /* OVLY6=163 */
170         0x55, 0x54,             /* OVLU6=84    blue */
171         0x56, 0xf2,             /* OVLV6=242 */
172         0x57, 0x90,             /* OVLY7=144 */
173         0x58, 0x00,             /* OVLU7=0     black */
174         0x59, 0x00,             /* OVLV7=0   */
175
176         0x5a, 0x00,             /* CHPS=0    */
177         0x5b, 0x76,             /* GAINU=118 */
178         0x5c, 0xa5,             /* GAINV=165 */
179         0x5d, 0x3c,             /* BLCKL=60  */
180         0x5e, 0x3a,             /* BLNNL=58  */
181         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
182         0x60, 0x00,             /* NULL      */
183
184         /* 0x61 - 0x66 set according to norm */
185
186         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
187         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
188         0x69, 0x00,             /* 0 : caption 1st byte even field */
189         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
190
191         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
192         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
193                                  * CBLF=0, ORCV2=0, PRCV2=0 */
194         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
195
196         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
197                                  * least for PAL */
198         0x6f, 0x00,             /* HTRIG upper bits */
199         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
200
201         /* The following should not be needed */
202
203         0x71, 0x15,             /* BMRQ=0x115 */
204         0x72, 0x90,             /* EMRQ=0x690 */
205         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
206         0x74, 0x00,             /* NULL       */
207         0x75, 0x00,             /* NULL       */
208         0x76, 0x00,             /* NULL       */
209         0x77, 0x15,             /* BRCV=0x115 */
210         0x78, 0x90,             /* ERCV=0x690 */
211         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
212
213         /* Field length controls */
214
215         0x7a, 0x70,             /* FLC=0 */
216
217         /* The following should not be needed if SBLN = 1 */
218
219         0x7b, 0x16,             /* FAL=22 */
220         0x7c, 0x35,             /* LAL=244 */
221         0x7d, 0x20,             /* LAL=244, FAL=22 */
222 };
223
224 static const unsigned char init_pal[] = {
225         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
226                                  * YGS=1, INPI=0, DOWN=0 */
227         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
228         0x63, 0xcb,             /* FSC0 */
229         0x64, 0x8a,             /* FSC1 */
230         0x65, 0x09,             /* FSC2 */
231         0x66, 0x2a,             /* FSC3 */
232 };
233
234 static const unsigned char init_ntsc[] = {
235         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
236                                  * YGS=1, INPI=0, DOWN=0 */
237         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
238         0x63, 0x1f,             /* FSC0 */
239         0x64, 0x7c,             /* FSC1 */
240         0x65, 0xf0,             /* FSC2 */
241         0x66, 0x21,             /* FSC3 */
242 };
243
244 static int
245 saa7185_command (struct i2c_client *client,
246                  unsigned int       cmd,
247                  void              *arg)
248 {
249         struct saa7185 *encoder = i2c_get_clientdata(client);
250
251         switch (cmd) {
252
253         case 0:
254                 saa7185_write_block(client, init_common,
255                                     sizeof(init_common));
256                 switch (encoder->norm) {
257
258                 case VIDEO_MODE_NTSC:
259                         saa7185_write_block(client, init_ntsc,
260                                             sizeof(init_ntsc));
261                         break;
262
263                 case VIDEO_MODE_PAL:
264                         saa7185_write_block(client, init_pal,
265                                             sizeof(init_pal));
266                         break;
267                 }
268
269                 break;
270
271         case ENCODER_GET_CAPABILITIES:
272         {
273                 struct video_encoder_capability *cap = arg;
274
275                 cap->flags =
276                     VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
277                     VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
278                 cap->inputs = 1;
279                 cap->outputs = 1;
280         }
281                 break;
282
283         case ENCODER_SET_NORM:
284         {
285                 int *iarg = arg;
286
287                 //saa7185_write_block(client, init_common, sizeof(init_common));
288
289                 switch (*iarg) {
290
291                 case VIDEO_MODE_NTSC:
292                         saa7185_write_block(client, init_ntsc,
293                                             sizeof(init_ntsc));
294                         break;
295
296                 case VIDEO_MODE_PAL:
297                         saa7185_write_block(client, init_pal,
298                                             sizeof(init_pal));
299                         break;
300
301                 case VIDEO_MODE_SECAM:
302                 default:
303                         return -EINVAL;
304
305                 }
306                 encoder->norm = *iarg;
307         }
308                 break;
309
310         case ENCODER_SET_INPUT:
311         {
312                 int *iarg = arg;
313
314                 /* RJ: *iarg = 0: input is from SA7111
315                  *iarg = 1: input is from ZR36060 */
316
317                 switch (*iarg) {
318
319                 case 0:
320                         /* Switch RTCE to 1 */
321                         saa7185_write(client, 0x61,
322                                       (encoder->reg[0x61] & 0xf7) | 0x08);
323                         saa7185_write(client, 0x6e, 0x01);
324                         break;
325
326                 case 1:
327                         /* Switch RTCE to 0 */
328                         saa7185_write(client, 0x61,
329                                       (encoder->reg[0x61] & 0xf7) | 0x00);
330                         /* SW: a slight sync problem... */
331                         saa7185_write(client, 0x6e, 0x00);
332                         break;
333
334                 default:
335                         return -EINVAL;
336
337                 }
338         }
339                 break;
340
341         case ENCODER_SET_OUTPUT:
342         {
343                 int *iarg = arg;
344
345                 /* not much choice of outputs */
346                 if (*iarg != 0) {
347                         return -EINVAL;
348                 }
349         }
350                 break;
351
352         case ENCODER_ENABLE_OUTPUT:
353         {
354                 int *iarg = arg;
355
356                 encoder->enable = !!*iarg;
357                 saa7185_write(client, 0x61,
358                               (encoder->reg[0x61] & 0xbf) |
359                               (encoder->enable ? 0x00 : 0x40));
360         }
361                 break;
362
363         default:
364                 return -EINVAL;
365         }
366
367         return 0;
368 }
369
370 /* ----------------------------------------------------------------------- */
371
372 /*
373  * Generic i2c probe
374  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
375  */
376 static unsigned short normal_i2c[] = { I2C_SAA7185 >> 1, I2C_CLIENT_END };
377
378 static unsigned short ignore = I2C_CLIENT_END;
379
380 static struct i2c_client_address_data addr_data = {
381         .normal_i2c             = normal_i2c,
382         .probe                  = &ignore,
383         .ignore                 = &ignore,
384 };
385
386 static struct i2c_driver i2c_driver_saa7185;
387
388 static int
389 saa7185_detect_client (struct i2c_adapter *adapter,
390                        int                 address,
391                        int                 kind)
392 {
393         int i;
394         struct i2c_client *client;
395         struct saa7185 *encoder;
396
397         dprintk(1,
398                 KERN_INFO
399                 "saa7185.c: detecting saa7185 client on address 0x%x\n",
400                 address << 1);
401
402         /* Check if the adapter supports the needed features */
403         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
404                 return 0;
405
406         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
407         if (client == 0)
408                 return -ENOMEM;
409         client->addr = address;
410         client->adapter = adapter;
411         client->driver = &i2c_driver_saa7185;
412         strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
413
414         encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
415         if (encoder == NULL) {
416                 kfree(client);
417                 return -ENOMEM;
418         }
419         encoder->norm = VIDEO_MODE_NTSC;
420         encoder->enable = 1;
421         i2c_set_clientdata(client, encoder);
422
423         i = i2c_attach_client(client);
424         if (i) {
425                 kfree(client);
426                 kfree(encoder);
427                 return i;
428         }
429
430         i = saa7185_write_block(client, init_common, sizeof(init_common));
431         if (i >= 0) {
432                 i = saa7185_write_block(client, init_ntsc,
433                                         sizeof(init_ntsc));
434         }
435         if (i < 0) {
436                 dprintk(1, KERN_ERR "%s_attach: init error %d\n",
437                         I2C_NAME(client), i);
438         } else {
439                 dprintk(1,
440                         KERN_INFO
441                         "%s_attach: chip version %d at address 0x%x\n",
442                         I2C_NAME(client), saa7185_read(client) >> 5,
443                         client->addr << 1);
444         }
445
446         return 0;
447 }
448
449 static int
450 saa7185_attach_adapter (struct i2c_adapter *adapter)
451 {
452         dprintk(1,
453                 KERN_INFO
454                 "saa7185.c: starting probe for adapter %s (0x%x)\n",
455                 I2C_NAME(adapter), adapter->id);
456         return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
457 }
458
459 static int
460 saa7185_detach_client (struct i2c_client *client)
461 {
462         struct saa7185 *encoder = i2c_get_clientdata(client);
463         int err;
464
465         err = i2c_detach_client(client);
466         if (err) {
467                 return err;
468         }
469
470         saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
471         //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
472
473         kfree(encoder);
474         kfree(client);
475
476         return 0;
477 }
478
479 /* ----------------------------------------------------------------------- */
480
481 static struct i2c_driver i2c_driver_saa7185 = {
482         .driver = {
483                 .name = "saa7185",      /* name */
484         },
485
486         .id = I2C_DRIVERID_SAA7185B,
487
488         .attach_adapter = saa7185_attach_adapter,
489         .detach_client = saa7185_detach_client,
490         .command = saa7185_command,
491 };
492
493 static int __init
494 saa7185_init (void)
495 {
496         return i2c_add_driver(&i2c_driver_saa7185);
497 }
498
499 static void __exit
500 saa7185_exit (void)
501 {
502         i2c_del_driver(&i2c_driver_saa7185);
503 }
504
505 module_init(saa7185_init);
506 module_exit(saa7185_exit);