?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
memcg: update menuconfig help text
[linux-2.6.git] / drivers / media / video / saa7110.c
blobadf2ba79496a48e0d9705a74738fd03b5a1b807b
1 /*
2 * saa7110 - Philips SAA7110(A) video decoder driver
3 *
4 * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
5 *
6 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
7 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
8 * - some corrections for Pinnacle Systems Inc. DC10plus card.
9 *
10 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
11 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/delay.h>
32 #include <linux/slab.h>
33 #include <linux/wait.h>
34 #include <asm/uaccess.h>
35 #include <linux/i2c.h>
36 #include <linux/videodev.h>
37 #include <linux/video_decoder.h>
38 #include <media/v4l2-common.h>
39 #include <media/v4l2-i2c-drv-legacy.h>
40
41 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
42 MODULE_AUTHOR("Pauline Middelink");
43 MODULE_LICENSE("GPL");
44
45 static int debug;
46 module_param(debug, int, 0);
47 MODULE_PARM_DESC(debug, "Debug level (0-1)");
48
49 #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
50 #define SAA7110_MAX_OUTPUT 0 /* its a decoder only */
51
52 #define SAA7110_NR_REG 0x35
53
54 struct saa7110 {
55 u8 reg[SAA7110_NR_REG];
56
57 int norm;
58 int input;
59 int enable;
60 int bright;
61 int contrast;
62 int hue;
63 int sat;
64
65 wait_queue_head_t wq;
66 };
67
68 /* ----------------------------------------------------------------------- */
69 /* I2C support functions */
70 /* ----------------------------------------------------------------------- */
71
72 static int saa7110_write(struct i2c_client *client, u8 reg, u8 value)
73 {
74 struct saa7110 *decoder = i2c_get_clientdata(client);
75
76 decoder->reg[reg] = value;
77 return i2c_smbus_write_byte_data(client, reg, value);
78 }
79
80 static int saa7110_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
81 {
82 int ret = -1;
83 u8 reg = *data; /* first register to write to */
84
85 /* Sanity check */
86 if (reg + (len - 1) > SAA7110_NR_REG)
87 return ret;
88
89 /* the saa7110 has an autoincrement function, use it if
90 * the adapter understands raw I2C */
91 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
92 struct saa7110 *decoder = i2c_get_clientdata(client);
93
94 ret = i2c_master_send(client, data, len);
95
96 /* Cache the written data */
97 memcpy(decoder->reg + reg, data + 1, len - 1);
98 } else {
99 for (++data, --len; len; len--) {
100 ret = saa7110_write(client, reg++, *data++);
101 if (ret < 0)
102 break;
103 }
104 }
105
106 return ret;
107 }
108
109 static inline int saa7110_read(struct i2c_client *client)
110 {
111 return i2c_smbus_read_byte(client);
112 }
113
114 /* ----------------------------------------------------------------------- */
115 /* SAA7110 functions */
116 /* ----------------------------------------------------------------------- */
117
118 #define FRESP_06H_COMPST 0x03 //0x13
119 #define FRESP_06H_SVIDEO 0x83 //0xC0
120
121
122 static int saa7110_selmux(struct i2c_client *client, int chan)
123 {
124 static const unsigned char modes[9][8] = {
125 /* mode 0 */
126 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
127 0x44, 0x75, 0x16},
128 /* mode 1 */
129 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
130 0x44, 0x75, 0x16},
131 /* mode 2 */
132 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
133 0x60, 0xB5, 0x05},
134 /* mode 3 */
135 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
136 0x60, 0xB5, 0x05},
137 /* mode 4 */
138 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
139 0x60, 0xB5, 0x03},
140 /* mode 5 */
141 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
142 0x60, 0xB5, 0x03},
143 /* mode 6 */
144 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
145 0x44, 0x75, 0x12},
146 /* mode 7 */
147 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
148 0x60, 0xB5, 0x14},
149 /* mode 8 */
150 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
151 0x44, 0x75, 0x21}
152 };
153 struct saa7110 *decoder = i2c_get_clientdata(client);
154 const unsigned char *ptr = modes[chan];
155
156 saa7110_write(client, 0x06, ptr[0]); /* Luminance control */
157 saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */
158 saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */
159 saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */
160 saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */
161 saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */
162 saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */
163 saa7110_write(client, 0x21, ptr[7]); /* Analog Control #2 */
164 decoder->input = chan;
165
166 return 0;
167 }
168
169 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
170 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
171 /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
172 /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
173 /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
174 /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
175 /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
176 /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
177 };
178
179 static int determine_norm(struct i2c_client *client)
180 {
181 DEFINE_WAIT(wait);
182 struct saa7110 *decoder = i2c_get_clientdata(client);
183 int status;
184
185 /* mode changed, start automatic detection */
186 saa7110_write_block(client, initseq, sizeof(initseq));
187 saa7110_selmux(client, decoder->input);
188 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
189 schedule_timeout(msecs_to_jiffies(250));
190 finish_wait(&decoder->wq, &wait);
191 status = saa7110_read(client);
192 if (status & 0x40) {
193 v4l_dbg(1, debug, client, "status=0x%02x (no signal)\n", status);
194 return decoder->norm; // no change
195 }
196 if ((status & 3) == 0) {
197 saa7110_write(client, 0x06, 0x83);
198 if (status & 0x20) {
199 v4l_dbg(1, debug, client, "status=0x%02x (NTSC/no color)\n", status);
200 //saa7110_write(client,0x2E,0x81);
201 return VIDEO_MODE_NTSC;
202 }
203 v4l_dbg(1, debug, client, "status=0x%02x (PAL/no color)\n", status);
204 //saa7110_write(client,0x2E,0x9A);
205 return VIDEO_MODE_PAL;
206 }
207 //saa7110_write(client,0x06,0x03);
208 if (status & 0x20) { /* 60Hz */
209 v4l_dbg(1, debug, client, "status=0x%02x (NTSC)\n", status);
210 saa7110_write(client, 0x0D, 0x86);
211 saa7110_write(client, 0x0F, 0x50);
212 saa7110_write(client, 0x11, 0x2C);
213 //saa7110_write(client,0x2E,0x81);
214 return VIDEO_MODE_NTSC;
215 }
216
217 /* 50Hz -> PAL/SECAM */
218 saa7110_write(client, 0x0D, 0x86);
219 saa7110_write(client, 0x0F, 0x10);
220 saa7110_write(client, 0x11, 0x59);
221 //saa7110_write(client,0x2E,0x9A);
222
223 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
224 schedule_timeout(msecs_to_jiffies(250));
225 finish_wait(&decoder->wq, &wait);
226
227 status = saa7110_read(client);
228 if ((status & 0x03) == 0x01) {
229 v4l_dbg(1, debug, client, "status=0x%02x (SECAM)\n", status);
230 saa7110_write(client, 0x0D, 0x87);
231 return VIDEO_MODE_SECAM;
232 }
233 v4l_dbg(1, debug, client, "status=0x%02x (PAL)\n", status);
234 return VIDEO_MODE_PAL;
235 }
236
237 static int
238 saa7110_command (struct i2c_client *client,
239 unsigned int cmd,
240 void *arg)
241 {
242 struct saa7110 *decoder = i2c_get_clientdata(client);
243 int v;
244
245 switch (cmd) {
246 case 0:
247 //saa7110_write_block(client, initseq, sizeof(initseq));
248 break;
249
250 case DECODER_GET_CAPABILITIES:
251 {
252 struct video_decoder_capability *dc = arg;
253
254 dc->flags =
255 VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
256 VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
257 dc->inputs = SAA7110_MAX_INPUT;
258 dc->outputs = SAA7110_MAX_OUTPUT;
259 break;
260 }
261
262 case DECODER_GET_STATUS:
263 {
264 int status;
265 int res = 0;
266
267 status = saa7110_read(client);
268 v4l_dbg(1, debug, client, "status=0x%02x norm=%d\n",
269 status, decoder->norm);
270 if (!(status & 0x40))
271 res |= DECODER_STATUS_GOOD;
272 if (status & 0x03)
273 res |= DECODER_STATUS_COLOR;
274
275 switch (decoder->norm) {
276 case VIDEO_MODE_NTSC:
277 res |= DECODER_STATUS_NTSC;
278 break;
279 case VIDEO_MODE_PAL:
280 res |= DECODER_STATUS_PAL;
281 break;
282 case VIDEO_MODE_SECAM:
283 res |= DECODER_STATUS_SECAM;
284 break;
285 }
286 *(int *) arg = res;
287 break;
288 }
289
290 case DECODER_SET_NORM:
291 v = *(int *) arg;
292 if (decoder->norm != v) {
293 decoder->norm = v;
294 //saa7110_write(client, 0x06, 0x03);
295 switch (v) {
296 case VIDEO_MODE_NTSC:
297 saa7110_write(client, 0x0D, 0x86);
298 saa7110_write(client, 0x0F, 0x50);
299 saa7110_write(client, 0x11, 0x2C);
300 //saa7110_write(client, 0x2E, 0x81);
301 v4l_dbg(1, debug, client, "switched to NTSC\n");
302 break;
303 case VIDEO_MODE_PAL:
304 saa7110_write(client, 0x0D, 0x86);
305 saa7110_write(client, 0x0F, 0x10);
306 saa7110_write(client, 0x11, 0x59);
307 //saa7110_write(client, 0x2E, 0x9A);
308 v4l_dbg(1, debug, client, "switched to PAL\n");
309 break;
310 case VIDEO_MODE_SECAM:
311 saa7110_write(client, 0x0D, 0x87);
312 saa7110_write(client, 0x0F, 0x10);
313 saa7110_write(client, 0x11, 0x59);
314 //saa7110_write(client, 0x2E, 0x9A);
315 v4l_dbg(1, debug, client, "switched to SECAM\n");
316 break;
317 case VIDEO_MODE_AUTO:
318 v4l_dbg(1, debug, client, "switched to AUTO\n");
319 decoder->norm = determine_norm(client);
320 *(int *) arg = decoder->norm;
321 break;
322 default:
323 return -EPERM;
324 }
325 }
326 break;
327
328 case DECODER_SET_INPUT:
329 v = *(int *) arg;
330 if (v < 0 || v > SAA7110_MAX_INPUT) {
331 v4l_dbg(1, debug, client, "input=%d not available\n", v);
332 return -EINVAL;
333 }
334 if (decoder->input != v) {
335 saa7110_selmux(client, v);
336 v4l_dbg(1, debug, client, "switched to input=%d\n", v);
337 }
338 break;
339
340 case DECODER_SET_OUTPUT:
341 v = *(int *) arg;
342 /* not much choice of outputs */
343 if (v != 0)
344 return -EINVAL;
345 break;
346
347 case DECODER_ENABLE_OUTPUT:
348 v = *(int *) arg;
349 if (decoder->enable != v) {
350 decoder->enable = v;
351 saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
352 v4l_dbg(1, debug, client, "YUV %s\n", v ? "on" : "off");
353 }
354 break;
355
356 case DECODER_SET_PICTURE:
357 {
358 struct video_picture *pic = arg;
359
360 if (decoder->bright != pic->brightness) {
361 /* We want 0 to 255 we get 0-65535 */
362 decoder->bright = pic->brightness;
363 saa7110_write(client, 0x19, decoder->bright >> 8);
364 }
365 if (decoder->contrast != pic->contrast) {
366 /* We want 0 to 127 we get 0-65535 */
367 decoder->contrast = pic->contrast;
368 saa7110_write(client, 0x13,
369 decoder->contrast >> 9);
370 }
371 if (decoder->sat != pic->colour) {
372 /* We want 0 to 127 we get 0-65535 */
373 decoder->sat = pic->colour;
374 saa7110_write(client, 0x12, decoder->sat >> 9);
375 }
376 if (decoder->hue != pic->hue) {
377 /* We want -128 to 127 we get 0-65535 */
378 decoder->hue = pic->hue;
379 saa7110_write(client, 0x07,
380 (decoder->hue >> 8) - 128);
381 }
382 break;
383 }
384
385 case DECODER_DUMP:
386 if (!debug)
387 break;
388 for (v = 0; v < SAA7110_NR_REG; v += 16) {
389 int j;
390 v4l_dbg(1, debug, client, "%02x:", v);
391 for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++)
392 printk(KERN_CONT " %02x", decoder->reg[v + j]);
393 printk(KERN_CONT "\n");
394 }
395 break;
396
397 default:
398 v4l_dbg(1, debug, client, "unknown command %08x\n", cmd);
399 return -EINVAL;
400 }
401 return 0;
402 }
403
404 /* ----------------------------------------------------------------------- */
405
406 /*
407 * Generic i2c probe
408 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
409 */
410
411 static unsigned short normal_i2c[] = { 0x9c >> 1, 0x9e >> 1, I2C_CLIENT_END };
412
413 I2C_CLIENT_INSMOD;
414
415 static int saa7110_probe(struct i2c_client *client,
416 const struct i2c_device_id *id)
417 {
418 struct saa7110 *decoder;
419 int rv;
420
421 /* Check if the adapter supports the needed features */
422 if (!i2c_check_functionality(client->adapter,
423 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
424 return -ENODEV;
425
426 v4l_info(client, "chip found @ 0x%x (%s)\n",
427 client->addr << 1, client->adapter->name);
428
429 decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
430 if (!decoder)
431 return -ENOMEM;
432 decoder->norm = VIDEO_MODE_PAL;
433 decoder->input = 0;
434 decoder->enable = 1;
435 decoder->bright = 32768;
436 decoder->contrast = 32768;
437 decoder->hue = 32768;
438 decoder->sat = 32768;
439 init_waitqueue_head(&decoder->wq);
440 i2c_set_clientdata(client, decoder);
441
442 rv = saa7110_write_block(client, initseq, sizeof(initseq));
443 if (rv < 0) {
444 v4l_dbg(1, debug, client, "init status %d\n", rv);
445 } else {
446 int ver, status;
447 saa7110_write(client, 0x21, 0x10);
448 saa7110_write(client, 0x0e, 0x18);
449 saa7110_write(client, 0x0D, 0x04);
450 ver = saa7110_read(client);
451 saa7110_write(client, 0x0D, 0x06);
452 //mdelay(150);
453 status = saa7110_read(client);
454 v4l_dbg(1, debug, client, "version %x, status=0x%02x\n",
455 ver, status);
456 saa7110_write(client, 0x0D, 0x86);
457 saa7110_write(client, 0x0F, 0x10);
458 saa7110_write(client, 0x11, 0x59);
459 //saa7110_write(client, 0x2E, 0x9A);
460 }
461
462 //saa7110_selmux(client,0);
463 //determine_norm(client);
464 /* setup and implicit mode 0 select has been performed */
465
466 return 0;
467 }
468
469 static int saa7110_remove(struct i2c_client *client)
470 {
471 kfree(i2c_get_clientdata(client));
472 return 0;
473 }
474
475 /* ----------------------------------------------------------------------- */
476
477 static const struct i2c_device_id saa7110_id[] = {
478 { "saa7110", 0 },
479 { }
480 };
481 MODULE_DEVICE_TABLE(i2c, saa7110_id);
482
483 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
484 .name = "saa7110",
485 .driverid = I2C_DRIVERID_SAA7110,
486 .command = saa7110_command,
487 .probe = saa7110_probe,
488 .remove = saa7110_remove,
489 .id_table = saa7110_id,
490 };
Linus' kernel tree