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Merge remote-tracking branch 'moduleh/module.h-split'
[linux-2.6/next.git] / drivers / media / video / saa7110.c
blob99664205ef4e962abecbc448d4c7521bd47770cf
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/videodev2.h>
37 #include <media/v4l2-device.h>
38 #include <media/v4l2-chip-ident.h>
39 #include <media/v4l2-ctrls.h>
40
41 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
42 MODULE_AUTHOR("Pauline Middelink");
43 MODULE_LICENSE("GPL");
44
45
46 static int debug;
47 module_param(debug, int, 0);
48 MODULE_PARM_DESC(debug, "Debug level (0-1)");
49
50 #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
51 #define SAA7110_MAX_OUTPUT 1 /* 1 YUV */
52
53 #define SAA7110_NR_REG 0x35
54
55 struct saa7110 {
56 struct v4l2_subdev sd;
57 struct v4l2_ctrl_handler hdl;
58 u8 reg[SAA7110_NR_REG];
59
60 v4l2_std_id norm;
61 int input;
62 int enable;
63
64 wait_queue_head_t wq;
65 };
66
67 static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
68 {
69 return container_of(sd, struct saa7110, sd);
70 }
71
72 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
73 {
74 return &container_of(ctrl->handler, struct saa7110, hdl)->sd;
75 }
76
77 /* ----------------------------------------------------------------------- */
78 /* I2C support functions */
79 /* ----------------------------------------------------------------------- */
80
81 static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value)
82 {
83 struct i2c_client *client = v4l2_get_subdevdata(sd);
84 struct saa7110 *decoder = to_saa7110(sd);
85
86 decoder->reg[reg] = value;
87 return i2c_smbus_write_byte_data(client, reg, value);
88 }
89
90 static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
91 {
92 struct i2c_client *client = v4l2_get_subdevdata(sd);
93 struct saa7110 *decoder = to_saa7110(sd);
94 int ret = -1;
95 u8 reg = *data; /* first register to write to */
96
97 /* Sanity check */
98 if (reg + (len - 1) > SAA7110_NR_REG)
99 return ret;
100
101 /* the saa7110 has an autoincrement function, use it if
102 * the adapter understands raw I2C */
103 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
104 ret = i2c_master_send(client, data, len);
105
106 /* Cache the written data */
107 memcpy(decoder->reg + reg, data + 1, len - 1);
108 } else {
109 for (++data, --len; len; len--) {
110 ret = saa7110_write(sd, reg++, *data++);
111 if (ret < 0)
112 break;
113 }
114 }
115
116 return ret;
117 }
118
119 static inline int saa7110_read(struct v4l2_subdev *sd)
120 {
121 struct i2c_client *client = v4l2_get_subdevdata(sd);
122
123 return i2c_smbus_read_byte(client);
124 }
125
126 /* ----------------------------------------------------------------------- */
127 /* SAA7110 functions */
128 /* ----------------------------------------------------------------------- */
129
130 #define FRESP_06H_COMPST 0x03 /*0x13*/
131 #define FRESP_06H_SVIDEO 0x83 /*0xC0*/
132
133
134 static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
135 {
136 static const unsigned char modes[9][8] = {
137 /* mode 0 */
138 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
139 0x44, 0x75, 0x16},
140 /* mode 1 */
141 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
142 0x44, 0x75, 0x16},
143 /* mode 2 */
144 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
145 0x60, 0xB5, 0x05},
146 /* mode 3 */
147 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
148 0x60, 0xB5, 0x05},
149 /* mode 4 */
150 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
151 0x60, 0xB5, 0x03},
152 /* mode 5 */
153 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
154 0x60, 0xB5, 0x03},
155 /* mode 6 */
156 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
157 0x44, 0x75, 0x12},
158 /* mode 7 */
159 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
160 0x60, 0xB5, 0x14},
161 /* mode 8 */
162 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
163 0x44, 0x75, 0x21}
164 };
165 struct saa7110 *decoder = to_saa7110(sd);
166 const unsigned char *ptr = modes[chan];
167
168 saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */
169 saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */
170 saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */
171 saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */
172 saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */
173 saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */
174 saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */
175 saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */
176 decoder->input = chan;
177
178 return 0;
179 }
180
181 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
182 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
183 /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
184 /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
185 /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
186 /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
187 /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
188 /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
189 };
190
191 static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
192 {
193 DEFINE_WAIT(wait);
194 struct saa7110 *decoder = to_saa7110(sd);
195 int status;
196
197 /* mode changed, start automatic detection */
198 saa7110_write_block(sd, initseq, sizeof(initseq));
199 saa7110_selmux(sd, decoder->input);
200 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
201 schedule_timeout(msecs_to_jiffies(250));
202 finish_wait(&decoder->wq, &wait);
203 status = saa7110_read(sd);
204 if (status & 0x40) {
205 v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
206 return decoder->norm; /* no change*/
207 }
208 if ((status & 3) == 0) {
209 saa7110_write(sd, 0x06, 0x83);
210 if (status & 0x20) {
211 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
212 /*saa7110_write(sd,0x2E,0x81);*/
213 return V4L2_STD_NTSC;
214 }
215 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
216 /*saa7110_write(sd,0x2E,0x9A);*/
217 return V4L2_STD_PAL;
218 }
219 /*saa7110_write(sd,0x06,0x03);*/
220 if (status & 0x20) { /* 60Hz */
221 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
222 saa7110_write(sd, 0x0D, 0x86);
223 saa7110_write(sd, 0x0F, 0x50);
224 saa7110_write(sd, 0x11, 0x2C);
225 /*saa7110_write(sd,0x2E,0x81);*/
226 return V4L2_STD_NTSC;
227 }
228
229 /* 50Hz -> PAL/SECAM */
230 saa7110_write(sd, 0x0D, 0x86);
231 saa7110_write(sd, 0x0F, 0x10);
232 saa7110_write(sd, 0x11, 0x59);
233 /*saa7110_write(sd,0x2E,0x9A);*/
234
235 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
236 schedule_timeout(msecs_to_jiffies(250));
237 finish_wait(&decoder->wq, &wait);
238
239 status = saa7110_read(sd);
240 if ((status & 0x03) == 0x01) {
241 v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
242 saa7110_write(sd, 0x0D, 0x87);
243 return V4L2_STD_SECAM;
244 }
245 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
246 return V4L2_STD_PAL;
247 }
248
249 static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
250 {
251 struct saa7110 *decoder = to_saa7110(sd);
252 int res = V4L2_IN_ST_NO_SIGNAL;
253 int status = saa7110_read(sd);
254
255 v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
256 status, (unsigned long long)decoder->norm);
257 if (!(status & 0x40))
258 res = 0;
259 if (!(status & 0x03))
260 res |= V4L2_IN_ST_NO_COLOR;
261
262 *pstatus = res;
263 return 0;
264 }
265
266 static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
267 {
268 *(v4l2_std_id *)std = determine_norm(sd);
269 return 0;
270 }
271
272 static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
273 {
274 struct saa7110 *decoder = to_saa7110(sd);
275
276 if (decoder->norm != std) {
277 decoder->norm = std;
278 /*saa7110_write(sd, 0x06, 0x03);*/
279 if (std & V4L2_STD_NTSC) {
280 saa7110_write(sd, 0x0D, 0x86);
281 saa7110_write(sd, 0x0F, 0x50);
282 saa7110_write(sd, 0x11, 0x2C);
283 /*saa7110_write(sd, 0x2E, 0x81);*/
284 v4l2_dbg(1, debug, sd, "switched to NTSC\n");
285 } else if (std & V4L2_STD_PAL) {
286 saa7110_write(sd, 0x0D, 0x86);
287 saa7110_write(sd, 0x0F, 0x10);
288 saa7110_write(sd, 0x11, 0x59);
289 /*saa7110_write(sd, 0x2E, 0x9A);*/
290 v4l2_dbg(1, debug, sd, "switched to PAL\n");
291 } else if (std & V4L2_STD_SECAM) {
292 saa7110_write(sd, 0x0D, 0x87);
293 saa7110_write(sd, 0x0F, 0x10);
294 saa7110_write(sd, 0x11, 0x59);
295 /*saa7110_write(sd, 0x2E, 0x9A);*/
296 v4l2_dbg(1, debug, sd, "switched to SECAM\n");
297 } else {
298 return -EINVAL;
299 }
300 }
301 return 0;
302 }
303
304 static int saa7110_s_routing(struct v4l2_subdev *sd,
305 u32 input, u32 output, u32 config)
306 {
307 struct saa7110 *decoder = to_saa7110(sd);
308
309 if (input >= SAA7110_MAX_INPUT) {
310 v4l2_dbg(1, debug, sd, "input=%d not available\n", input);
311 return -EINVAL;
312 }
313 if (decoder->input != input) {
314 saa7110_selmux(sd, input);
315 v4l2_dbg(1, debug, sd, "switched to input=%d\n", input);
316 }
317 return 0;
318 }
319
320 static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
321 {
322 struct saa7110 *decoder = to_saa7110(sd);
323
324 if (decoder->enable != enable) {
325 decoder->enable = enable;
326 saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
327 v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
328 }
329 return 0;
330 }
331
332 static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl)
333 {
334 struct v4l2_subdev *sd = to_sd(ctrl);
335
336 switch (ctrl->id) {
337 case V4L2_CID_BRIGHTNESS:
338 saa7110_write(sd, 0x19, ctrl->val);
339 break;
340 case V4L2_CID_CONTRAST:
341 saa7110_write(sd, 0x13, ctrl->val);
342 break;
343 case V4L2_CID_SATURATION:
344 saa7110_write(sd, 0x12, ctrl->val);
345 break;
346 case V4L2_CID_HUE:
347 saa7110_write(sd, 0x07, ctrl->val);
348 break;
349 default:
350 return -EINVAL;
351 }
352 return 0;
353 }
354
355 static int saa7110_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
356 {
357 struct i2c_client *client = v4l2_get_subdevdata(sd);
358
359 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7110, 0);
360 }
361
362 /* ----------------------------------------------------------------------- */
363
364 static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
365 .s_ctrl = saa7110_s_ctrl,
366 };
367
368 static const struct v4l2_subdev_core_ops saa7110_core_ops = {
369 .g_chip_ident = saa7110_g_chip_ident,
370 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
371 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
372 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
373 .g_ctrl = v4l2_subdev_g_ctrl,
374 .s_ctrl = v4l2_subdev_s_ctrl,
375 .queryctrl = v4l2_subdev_queryctrl,
376 .querymenu = v4l2_subdev_querymenu,
377 .s_std = saa7110_s_std,
378 };
379
380 static const struct v4l2_subdev_video_ops saa7110_video_ops = {
381 .s_routing = saa7110_s_routing,
382 .s_stream = saa7110_s_stream,
383 .querystd = saa7110_querystd,
384 .g_input_status = saa7110_g_input_status,
385 };
386
387 static const struct v4l2_subdev_ops saa7110_ops = {
388 .core = &saa7110_core_ops,
389 .video = &saa7110_video_ops,
390 };
391
392 /* ----------------------------------------------------------------------- */
393
394 static int saa7110_probe(struct i2c_client *client,
395 const struct i2c_device_id *id)
396 {
397 struct saa7110 *decoder;
398 struct v4l2_subdev *sd;
399 int rv;
400
401 /* Check if the adapter supports the needed features */
402 if (!i2c_check_functionality(client->adapter,
403 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
404 return -ENODEV;
405
406 v4l_info(client, "chip found @ 0x%x (%s)\n",
407 client->addr << 1, client->adapter->name);
408
409 decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
410 if (!decoder)
411 return -ENOMEM;
412 sd = &decoder->sd;
413 v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
414 decoder->norm = V4L2_STD_PAL;
415 decoder->input = 0;
416 decoder->enable = 1;
417 v4l2_ctrl_handler_init(&decoder->hdl, 2);
418 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
419 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
420 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
421 V4L2_CID_CONTRAST, 0, 127, 1, 64);
422 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
423 V4L2_CID_SATURATION, 0, 127, 1, 64);
424 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
425 V4L2_CID_HUE, -128, 127, 1, 0);
426 sd->ctrl_handler = &decoder->hdl;
427 if (decoder->hdl.error) {
428 int err = decoder->hdl.error;
429
430 v4l2_ctrl_handler_free(&decoder->hdl);
431 kfree(decoder);
432 return err;
433 }
434 v4l2_ctrl_handler_setup(&decoder->hdl);
435
436 init_waitqueue_head(&decoder->wq);
437
438 rv = saa7110_write_block(sd, initseq, sizeof(initseq));
439 if (rv < 0) {
440 v4l2_dbg(1, debug, sd, "init status %d\n", rv);
441 } else {
442 int ver, status;
443 saa7110_write(sd, 0x21, 0x10);
444 saa7110_write(sd, 0x0e, 0x18);
445 saa7110_write(sd, 0x0D, 0x04);
446 ver = saa7110_read(sd);
447 saa7110_write(sd, 0x0D, 0x06);
448 /*mdelay(150);*/
449 status = saa7110_read(sd);
450 v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
451 ver, status);
452 saa7110_write(sd, 0x0D, 0x86);
453 saa7110_write(sd, 0x0F, 0x10);
454 saa7110_write(sd, 0x11, 0x59);
455 /*saa7110_write(sd, 0x2E, 0x9A);*/
456 }
457
458 /*saa7110_selmux(sd,0);*/
459 /*determine_norm(sd);*/
460 /* setup and implicit mode 0 select has been performed */
461
462 return 0;
463 }
464
465 static int saa7110_remove(struct i2c_client *client)
466 {
467 struct v4l2_subdev *sd = i2c_get_clientdata(client);
468 struct saa7110 *decoder = to_saa7110(sd);
469
470 v4l2_device_unregister_subdev(sd);
471 v4l2_ctrl_handler_free(&decoder->hdl);
472 kfree(decoder);
473 return 0;
474 }
475
476 /* ----------------------------------------------------------------------- */
477
478 static const struct i2c_device_id saa7110_id[] = {
479 { "saa7110", 0 },
480 { }
481 };
482 MODULE_DEVICE_TABLE(i2c, saa7110_id);
483
484 static struct i2c_driver saa7110_driver = {
485 .driver = {
486 .owner = THIS_MODULE,
487 .name = "saa7110",
488 },
489 .probe = saa7110_probe,
490 .remove = saa7110_remove,
491 .id_table = saa7110_id,
492 };
493
494 static __init int init_saa7110(void)
495 {
496 return i2c_add_driver(&saa7110_driver);
497 }
498
499 static __exit void exit_saa7110(void)
500 {
501 i2c_del_driver(&saa7110_driver);
502 }
503
504 module_init(init_saa7110);
505 module_exit(exit_saa7110);
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