[PATCH] i2c: Drop i2c_driver.flags, 2 of 3
[linux-2.6.git] / 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 #include <linux/i2c-dev.h>
53
54 #define I2C_NAME(s) (s)->name
55
56 #include <linux/video_encoder.h>
57
58 static int debug = 0;
59 module_param(debug, int, 0);
60 MODULE_PARM_DESC(debug, "Debug level (0-1)");
61
62 #define dprintk(num, format, args...) \
63         do { \
64                 if (debug >= num) \
65                         printk(format, ##args); \
66         } while (0)
67
68 /* ----------------------------------------------------------------------- */
69
70 struct saa7185 {
71         unsigned char reg[128];
72
73         int norm;
74         int enable;
75         int bright;
76         int contrast;
77         int hue;
78         int sat;
79 };
80
81 #define   I2C_SAA7185        0x88
82
83 /* ----------------------------------------------------------------------- */
84
85 static inline int
86 saa7185_read (struct i2c_client *client)
87 {
88         return i2c_smbus_read_byte(client);
89 }
90
91 static int
92 saa7185_write (struct i2c_client *client,
93                u8                 reg,
94                u8                 value)
95 {
96         struct saa7185 *encoder = i2c_get_clientdata(client);
97
98         dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
99         encoder->reg[reg] = value;
100         return i2c_smbus_write_byte_data(client, reg, value);
101 }
102
103 static int
104 saa7185_write_block (struct i2c_client *client,
105                      const u8          *data,
106                      unsigned int       len)
107 {
108         int ret = -1;
109         u8 reg;
110
111         /* the adv7175 has an autoincrement function, use it if
112          * the adapter understands raw I2C */
113         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
114                 /* do raw I2C, not smbus compatible */
115                 struct saa7185 *encoder = i2c_get_clientdata(client);
116                 struct i2c_msg msg;
117                 u8 block_data[32];
118
119                 msg.addr = client->addr;
120                 msg.flags = 0;
121                 while (len >= 2) {
122                         msg.buf = (char *) block_data;
123                         msg.len = 0;
124                         block_data[msg.len++] = reg = data[0];
125                         do {
126                                 block_data[msg.len++] =
127                                     encoder->reg[reg++] = data[1];
128                                 len -= 2;
129                                 data += 2;
130                         } while (len >= 2 && data[0] == reg &&
131                                  msg.len < 32);
132                         if ((ret = i2c_transfer(client->adapter,
133                                                 &msg, 1)) < 0)
134                                 break;
135                 }
136         } else {
137                 /* do some slow I2C emulation kind of thing */
138                 while (len >= 2) {
139                         reg = *data++;
140                         if ((ret = saa7185_write(client, reg,
141                                                  *data++)) < 0)
142                                 break;
143                         len -= 2;
144                 }
145         }
146
147         return ret;
148 }
149
150 /* ----------------------------------------------------------------------- */
151
152 static const unsigned char init_common[] = {
153         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
154                                  * YUV2C=1, MY2C=1, MUV2C=1 */
155
156         0x42, 0x6b,             /* OVLY0=107 */
157         0x43, 0x00,             /* OVLU0=0     white */
158         0x44, 0x00,             /* OVLV0=0   */
159         0x45, 0x22,             /* OVLY1=34  */
160         0x46, 0xac,             /* OVLU1=172   yellow */
161         0x47, 0x0e,             /* OVLV1=14  */
162         0x48, 0x03,             /* OVLY2=3   */
163         0x49, 0x1d,             /* OVLU2=29    cyan */
164         0x4a, 0xac,             /* OVLV2=172 */
165         0x4b, 0xf0,             /* OVLY3=240 */
166         0x4c, 0xc8,             /* OVLU3=200   green */
167         0x4d, 0xb9,             /* OVLV3=185 */
168         0x4e, 0xd4,             /* OVLY4=212 */
169         0x4f, 0x38,             /* OVLU4=56    magenta */
170         0x50, 0x47,             /* OVLV4=71  */
171         0x51, 0xc1,             /* OVLY5=193 */
172         0x52, 0xe3,             /* OVLU5=227   red */
173         0x53, 0x54,             /* OVLV5=84  */
174         0x54, 0xa3,             /* OVLY6=163 */
175         0x55, 0x54,             /* OVLU6=84    blue */
176         0x56, 0xf2,             /* OVLV6=242 */
177         0x57, 0x90,             /* OVLY7=144 */
178         0x58, 0x00,             /* OVLU7=0     black */
179         0x59, 0x00,             /* OVLV7=0   */
180
181         0x5a, 0x00,             /* CHPS=0    */
182         0x5b, 0x76,             /* GAINU=118 */
183         0x5c, 0xa5,             /* GAINV=165 */
184         0x5d, 0x3c,             /* BLCKL=60  */
185         0x5e, 0x3a,             /* BLNNL=58  */
186         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
187         0x60, 0x00,             /* NULL      */
188
189         /* 0x61 - 0x66 set according to norm */
190
191         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
192         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
193         0x69, 0x00,             /* 0 : caption 1st byte even field */
194         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
195
196         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
197         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
198                                  * CBLF=0, ORCV2=0, PRCV2=0 */
199         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
200
201         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
202                                  * least for PAL */
203         0x6f, 0x00,             /* HTRIG upper bits */
204         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
205
206         /* The following should not be needed */
207
208         0x71, 0x15,             /* BMRQ=0x115 */
209         0x72, 0x90,             /* EMRQ=0x690 */
210         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
211         0x74, 0x00,             /* NULL       */
212         0x75, 0x00,             /* NULL       */
213         0x76, 0x00,             /* NULL       */
214         0x77, 0x15,             /* BRCV=0x115 */
215         0x78, 0x90,             /* ERCV=0x690 */
216         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
217
218         /* Field length controls */
219
220         0x7a, 0x70,             /* FLC=0 */
221
222         /* The following should not be needed if SBLN = 1 */
223
224         0x7b, 0x16,             /* FAL=22 */
225         0x7c, 0x35,             /* LAL=244 */
226         0x7d, 0x20,             /* LAL=244, FAL=22 */
227 };
228
229 static const unsigned char init_pal[] = {
230         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
231                                  * YGS=1, INPI=0, DOWN=0 */
232         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
233         0x63, 0xcb,             /* FSC0 */
234         0x64, 0x8a,             /* FSC1 */
235         0x65, 0x09,             /* FSC2 */
236         0x66, 0x2a,             /* FSC3 */
237 };
238
239 static const unsigned char init_ntsc[] = {
240         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
241                                  * YGS=1, INPI=0, DOWN=0 */
242         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
243         0x63, 0x1f,             /* FSC0 */
244         0x64, 0x7c,             /* FSC1 */
245         0x65, 0xf0,             /* FSC2 */
246         0x66, 0x21,             /* FSC3 */
247 };
248
249 static int
250 saa7185_command (struct i2c_client *client,
251                  unsigned int       cmd,
252                  void              *arg)
253 {
254         struct saa7185 *encoder = i2c_get_clientdata(client);
255
256         switch (cmd) {
257
258         case 0:
259                 saa7185_write_block(client, init_common,
260                                     sizeof(init_common));
261                 switch (encoder->norm) {
262
263                 case VIDEO_MODE_NTSC:
264                         saa7185_write_block(client, init_ntsc,
265                                             sizeof(init_ntsc));
266                         break;
267
268                 case VIDEO_MODE_PAL:
269                         saa7185_write_block(client, init_pal,
270                                             sizeof(init_pal));
271                         break;
272                 }
273
274                 break;
275
276         case ENCODER_GET_CAPABILITIES:
277         {
278                 struct video_encoder_capability *cap = arg;
279
280                 cap->flags =
281                     VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
282                     VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
283                 cap->inputs = 1;
284                 cap->outputs = 1;
285         }
286                 break;
287
288         case ENCODER_SET_NORM:
289         {
290                 int *iarg = arg;
291
292                 //saa7185_write_block(client, init_common, sizeof(init_common));
293
294                 switch (*iarg) {
295
296                 case VIDEO_MODE_NTSC:
297                         saa7185_write_block(client, init_ntsc,
298                                             sizeof(init_ntsc));
299                         break;
300
301                 case VIDEO_MODE_PAL:
302                         saa7185_write_block(client, init_pal,
303                                             sizeof(init_pal));
304                         break;
305
306                 case VIDEO_MODE_SECAM:
307                 default:
308                         return -EINVAL;
309
310                 }
311                 encoder->norm = *iarg;
312         }
313                 break;
314
315         case ENCODER_SET_INPUT:
316         {
317                 int *iarg = arg;
318
319                 /* RJ: *iarg = 0: input is from SA7111
320                  *iarg = 1: input is from ZR36060 */
321
322                 switch (*iarg) {
323
324                 case 0:
325                         /* Switch RTCE to 1 */
326                         saa7185_write(client, 0x61,
327                                       (encoder->reg[0x61] & 0xf7) | 0x08);
328                         saa7185_write(client, 0x6e, 0x01);
329                         break;
330
331                 case 1:
332                         /* Switch RTCE to 0 */
333                         saa7185_write(client, 0x61,
334                                       (encoder->reg[0x61] & 0xf7) | 0x00);
335                         /* SW: a slight sync problem... */
336                         saa7185_write(client, 0x6e, 0x00);
337                         break;
338
339                 default:
340                         return -EINVAL;
341
342                 }
343         }
344                 break;
345
346         case ENCODER_SET_OUTPUT:
347         {
348                 int *iarg = arg;
349
350                 /* not much choice of outputs */
351                 if (*iarg != 0) {
352                         return -EINVAL;
353                 }
354         }
355                 break;
356
357         case ENCODER_ENABLE_OUTPUT:
358         {
359                 int *iarg = arg;
360
361                 encoder->enable = !!*iarg;
362                 saa7185_write(client, 0x61,
363                               (encoder->reg[0x61] & 0xbf) |
364                               (encoder->enable ? 0x00 : 0x40));
365         }
366                 break;
367
368         default:
369                 return -EINVAL;
370         }
371
372         return 0;
373 }
374
375 /* ----------------------------------------------------------------------- */
376
377 /*
378  * Generic i2c probe
379  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
380  */
381 static unsigned short normal_i2c[] = { I2C_SAA7185 >> 1, I2C_CLIENT_END };
382
383 static unsigned short ignore = I2C_CLIENT_END;
384                                                                                 
385 static struct i2c_client_address_data addr_data = {
386         .normal_i2c             = normal_i2c,
387         .probe                  = &ignore,
388         .ignore                 = &ignore,
389 };
390
391 static struct i2c_driver i2c_driver_saa7185;
392
393 static int
394 saa7185_detect_client (struct i2c_adapter *adapter,
395                        int                 address,
396                        int                 kind)
397 {
398         int i;
399         struct i2c_client *client;
400         struct saa7185 *encoder;
401
402         dprintk(1,
403                 KERN_INFO
404                 "saa7185.c: detecting saa7185 client on address 0x%x\n",
405                 address << 1);
406
407         /* Check if the adapter supports the needed features */
408         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
409                 return 0;
410
411         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
412         if (client == 0)
413                 return -ENOMEM;
414         memset(client, 0, sizeof(struct i2c_client));
415         client->addr = address;
416         client->adapter = adapter;
417         client->driver = &i2c_driver_saa7185;
418         client->flags = I2C_CLIENT_ALLOW_USE;
419         strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
420
421         encoder = kmalloc(sizeof(struct saa7185), GFP_KERNEL);
422         if (encoder == NULL) {
423                 kfree(client);
424                 return -ENOMEM;
425         }
426         memset(encoder, 0, sizeof(struct saa7185));
427         encoder->norm = VIDEO_MODE_NTSC;
428         encoder->enable = 1;
429         i2c_set_clientdata(client, encoder);
430
431         i = i2c_attach_client(client);
432         if (i) {
433                 kfree(client);
434                 kfree(encoder);
435                 return i;
436         }
437
438         i = saa7185_write_block(client, init_common, sizeof(init_common));
439         if (i >= 0) {
440                 i = saa7185_write_block(client, init_ntsc,
441                                         sizeof(init_ntsc));
442         }
443         if (i < 0) {
444                 dprintk(1, KERN_ERR "%s_attach: init error %d\n",
445                         I2C_NAME(client), i);
446         } else {
447                 dprintk(1,
448                         KERN_INFO
449                         "%s_attach: chip version %d at address 0x%x\n",
450                         I2C_NAME(client), saa7185_read(client) >> 5,
451                         client->addr << 1);
452         }
453
454         return 0;
455 }
456
457 static int
458 saa7185_attach_adapter (struct i2c_adapter *adapter)
459 {
460         dprintk(1,
461                 KERN_INFO
462                 "saa7185.c: starting probe for adapter %s (0x%x)\n",
463                 I2C_NAME(adapter), adapter->id);
464         return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
465 }
466
467 static int
468 saa7185_detach_client (struct i2c_client *client)
469 {
470         struct saa7185 *encoder = i2c_get_clientdata(client);
471         int err;
472
473         err = i2c_detach_client(client);
474         if (err) {
475                 return err;
476         }
477
478         saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
479         //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
480
481         kfree(encoder);
482         kfree(client);
483
484         return 0;
485 }
486
487 /* ----------------------------------------------------------------------- */
488
489 static struct i2c_driver i2c_driver_saa7185 = {
490         .owner = THIS_MODULE,
491         .name = "saa7185",      /* name */
492
493         .id = I2C_DRIVERID_SAA7185B,
494
495         .attach_adapter = saa7185_attach_adapter,
496         .detach_client = saa7185_detach_client,
497         .command = saa7185_command,
498 };
499
500 static int __init
501 saa7185_init (void)
502 {
503         return i2c_add_driver(&i2c_driver_saa7185);
504 }
505
506 static void __exit
507 saa7185_exit (void)
508 {
509         i2c_del_driver(&i2c_driver_saa7185);
510 }
511
512 module_init(saa7185_init);
513 module_exit(saa7185_exit);