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1da177e4 LT |
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> | |
1da177e4 LT |
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> | |
1da177e4 LT |
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); | |
1da177e4 | 115 | u8 block_data[32]; |
9aa45e34 | 116 | int block_len; |
1da177e4 | 117 | |
1da177e4 | 118 | while (len >= 2) { |
9aa45e34 JD |
119 | block_len = 0; |
120 | block_data[block_len++] = reg = data[0]; | |
1da177e4 | 121 | do { |
9aa45e34 | 122 | block_data[block_len++] = |
1da177e4 LT |
123 | encoder->reg[reg++] = data[1]; |
124 | len -= 2; | |
125 | data += 2; | |
126 | } while (len >= 2 && data[0] == reg && | |
9aa45e34 JD |
127 | block_len < 32); |
128 | if ((ret = i2c_master_send(client, block_data, | |
129 | block_len)) < 0) | |
1da177e4 LT |
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 }; | |
1da177e4 | 378 | |
68cc9d0b | 379 | static unsigned short ignore = I2C_CLIENT_END; |
1da177e4 LT |
380 | |
381 | static struct i2c_client_address_data addr_data = { | |
382 | .normal_i2c = normal_i2c, | |
68cc9d0b JD |
383 | .probe = &ignore, |
384 | .ignore = &ignore, | |
1da177e4 LT |
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 | ||
7408187d | 407 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
1da177e4 LT |
408 | if (client == 0) |
409 | return -ENOMEM; | |
1da177e4 LT |
410 | client->addr = address; |
411 | client->adapter = adapter; | |
412 | client->driver = &i2c_driver_saa7185; | |
1da177e4 LT |
413 | strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client))); |
414 | ||
7408187d | 415 | encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL); |
1da177e4 LT |
416 | if (encoder == NULL) { |
417 | kfree(client); | |
418 | return -ENOMEM; | |
419 | } | |
1da177e4 LT |
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 = { | |
604f28e2 | 483 | .driver = { |
604f28e2 LR |
484 | .name = "saa7185", /* name */ |
485 | }, | |
1da177e4 LT |
486 | |
487 | .id = I2C_DRIVERID_SAA7185B, | |
1da177e4 LT |
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); |