1 /*
2 * Copyright (C) 2008 Sensoray Company Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License (Version 2) as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
16 */
17
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/usb.h>
21 #include <linux/i2c.h>
22 #include <linux/videodev2.h>
23 #include <linux/slab.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-common.h>
26 #include <media/v4l2-subdev.h>
27 #include "go7007-priv.h"
28
29 MODULE_DESCRIPTION("Sensoray 2250/2251 i2c v4l2 subdev driver");
30 MODULE_LICENSE("GPL v2");
31
32 #define TLV320_ADDRESS 0x34
33 #define VPX322_ADDR_ANALOGCONTROL1 0x02
34 #define VPX322_ADDR_BRIGHTNESS0 0x0127
35 #define VPX322_ADDR_BRIGHTNESS1 0x0131
36 #define VPX322_ADDR_CONTRAST0 0x0128
37 #define VPX322_ADDR_CONTRAST1 0x0132
38 #define VPX322_ADDR_HUE 0x00dc
39 #define VPX322_ADDR_SAT 0x0030
40
41 struct go7007_usb_board {
42 unsigned int flags;
43 struct go7007_board_info main_info;
44 };
45
46 struct go7007_usb {
47 struct go7007_usb_board *board;
48 struct mutex i2c_lock;
49 struct usb_device *usbdev;
50 struct urb *video_urbs[8];
51 struct urb *audio_urbs[8];
52 struct urb *intr_urb;
53 };
54
55 static unsigned char aud_regs[] = {
56 0x1e, 0x00,
57 0x00, 0x17,
58 0x02, 0x17,
59 0x04, 0xf9,
60 0x06, 0xf9,
61 0x08, 0x02,
62 0x0a, 0x00,
63 0x0c, 0x00,
64 0x0a, 0x00,
65 0x0c, 0x00,
66 0x0e, 0x02,
67 0x10, 0x00,
68 0x12, 0x01,
69 0x00, 0x00,
70 };
71
72
73 static unsigned char vid_regs[] = {
74 0xF2, 0x0f,
75 0xAA, 0x00,
76 0xF8, 0xff,
77 0x00, 0x00,
78 };
79
80 static u16 vid_regs_fp[] = {
81 0x028, 0x067,
82 0x120, 0x016,
83 0x121, 0xcF2,
84 0x122, 0x0F2,
85 0x123, 0x00c,
86 0x124, 0x2d0,
87 0x125, 0x2e0,
88 0x126, 0x004,
89 0x128, 0x1E0,
90 0x12A, 0x016,
91 0x12B, 0x0F2,
92 0x12C, 0x0F2,
93 0x12D, 0x00c,
94 0x12E, 0x2d0,
95 0x12F, 0x2e0,
96 0x130, 0x004,
97 0x132, 0x1E0,
98 0x140, 0x060,
99 0x153, 0x00C,
100 0x154, 0x200,
101 0x150, 0x801,
102 0x000, 0x000
103 };
104
105 /* PAL specific values */
106 static u16 vid_regs_fp_pal[] =
107 {
108 0x120, 0x017,
109 0x121, 0xd22,
110 0x122, 0x122,
111 0x12A, 0x017,
112 0x12B, 0x122,
113 0x12C, 0x122,
114 0x140, 0x060,
115 0x000, 0x000,
116 };
117
118 struct s2250 {
119 struct v4l2_subdev sd;
120 v4l2_std_id std;
121 int input;
122 int brightness;
123 int contrast;
124 int saturation;
125 int hue;
126 int reg12b_val;
127 int audio_input;
128 struct i2c_client *audio;
129 };
130
to_state(struct v4l2_subdev * sd)131 static inline struct s2250 *to_state(struct v4l2_subdev *sd)
132 {
133 return container_of(sd, struct s2250, sd);
134 }
135
136 /* from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
go7007_usb_vendor_request(struct go7007 * go,u16 request,u16 value,u16 index,void * transfer_buffer,int length,int in)137 static int go7007_usb_vendor_request(struct go7007 *go, u16 request,
138 u16 value, u16 index, void *transfer_buffer, int length, int in)
139 {
140 struct go7007_usb *usb = go->hpi_context;
141 int timeout = 5000;
142
143 if (in) {
144 return usb_control_msg(usb->usbdev,
145 usb_rcvctrlpipe(usb->usbdev, 0), request,
146 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
147 value, index, transfer_buffer, length, timeout);
148 } else {
149 return usb_control_msg(usb->usbdev,
150 usb_sndctrlpipe(usb->usbdev, 0), request,
151 USB_TYPE_VENDOR | USB_RECIP_DEVICE,
152 value, index, transfer_buffer, length, timeout);
153 }
154 }
155 /* end from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
156
write_reg(struct i2c_client * client,u8 reg,u8 value)157 static int write_reg(struct i2c_client *client, u8 reg, u8 value)
158 {
159 struct go7007 *go = i2c_get_adapdata(client->adapter);
160 struct go7007_usb *usb;
161 int rc;
162 int dev_addr = client->addr << 1; /* firmware wants 8-bit address */
163 u8 *buf;
164
165 if (go == NULL)
166 return -ENODEV;
167
168 if (go->status == STATUS_SHUTDOWN)
169 return -EBUSY;
170
171 buf = kzalloc(16, GFP_KERNEL);
172 if (buf == NULL)
173 return -ENOMEM;
174
175 usb = go->hpi_context;
176 if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
177 printk(KERN_INFO "i2c lock failed\n");
178 kfree(buf);
179 return -EINTR;
180 }
181 rc = go7007_usb_vendor_request(go, 0x55, dev_addr,
182 (reg<<8 | value),
183 buf,
184 16, 1);
185
186 mutex_unlock(&usb->i2c_lock);
187 kfree(buf);
188 return rc;
189 }
190
write_reg_fp(struct i2c_client * client,u16 addr,u16 val)191 static int write_reg_fp(struct i2c_client *client, u16 addr, u16 val)
192 {
193 struct go7007 *go = i2c_get_adapdata(client->adapter);
194 struct go7007_usb *usb;
195 u8 *buf;
196 struct s2250 *dec = i2c_get_clientdata(client);
197
198 if (go == NULL)
199 return -ENODEV;
200
201 if (go->status == STATUS_SHUTDOWN)
202 return -EBUSY;
203
204 buf = kzalloc(16, GFP_KERNEL);
205
206 if (buf == NULL)
207 return -ENOMEM;
208
209
210
211 memset(buf, 0xcd, 6);
212
213 usb = go->hpi_context;
214 if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
215 printk(KERN_INFO "i2c lock failed\n");
216 kfree(buf);
217 return -EINTR;
218 }
219 if (go7007_usb_vendor_request(go, 0x57, addr, val, buf, 16, 1) < 0) {
220 kfree(buf);
221 return -EFAULT;
222 }
223
224 mutex_unlock(&usb->i2c_lock);
225 if (buf[0] == 0) {
226 unsigned int subaddr, val_read;
227
228 subaddr = (buf[4] << 8) + buf[5];
229 val_read = (buf[2] << 8) + buf[3];
230 kfree(buf);
231 if (val_read != val) {
232 printk(KERN_INFO "invalid fp write %x %x\n",
233 val_read, val);
234 return -EFAULT;
235 }
236 if (subaddr != addr) {
237 printk(KERN_INFO "invalid fp write addr %x %x\n",
238 subaddr, addr);
239 return -EFAULT;
240 }
241 } else {
242 kfree(buf);
243 return -EFAULT;
244 }
245
246 /* save last 12b value */
247 if (addr == 0x12b)
248 dec->reg12b_val = val;
249
250 return 0;
251 }
252
read_reg_fp(struct i2c_client * client,u16 addr,u16 * val)253 static int read_reg_fp(struct i2c_client *client, u16 addr, u16 *val)
254 {
255 struct go7007 *go = i2c_get_adapdata(client->adapter);
256 struct go7007_usb *usb;
257 u8 *buf;
258
259 if (go == NULL)
260 return -ENODEV;
261
262 if (go->status == STATUS_SHUTDOWN)
263 return -EBUSY;
264
265 buf = kzalloc(16, GFP_KERNEL);
266
267 if (buf == NULL)
268 return -ENOMEM;
269
270
271
272 memset(buf, 0xcd, 6);
273 usb = go->hpi_context;
274 if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
275 printk(KERN_INFO "i2c lock failed\n");
276 kfree(buf);
277 return -EINTR;
278 }
279 if (go7007_usb_vendor_request(go, 0x58, addr, 0, buf, 16, 1) < 0) {
280 kfree(buf);
281 return -EFAULT;
282 }
283 mutex_unlock(&usb->i2c_lock);
284
285 *val = (buf[0] << 8) | buf[1];
286 kfree(buf);
287
288 return 0;
289 }
290
291
write_regs(struct i2c_client * client,u8 * regs)292 static int write_regs(struct i2c_client *client, u8 *regs)
293 {
294 int i;
295
296 for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
297 if (write_reg(client, regs[i], regs[i+1]) < 0) {
298 printk(KERN_INFO "s2250: failed\n");
299 return -1;
300 }
301 }
302 return 0;
303 }
304
write_regs_fp(struct i2c_client * client,u16 * regs)305 static int write_regs_fp(struct i2c_client *client, u16 *regs)
306 {
307 int i;
308
309 for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
310 if (write_reg_fp(client, regs[i], regs[i+1]) < 0) {
311 printk(KERN_INFO "s2250: failed fp\n");
312 return -1;
313 }
314 }
315 return 0;
316 }
317
318
319 /* ------------------------------------------------------------------------- */
320
s2250_s_video_routing(struct v4l2_subdev * sd,u32 input,u32 output,u32 config)321 static int s2250_s_video_routing(struct v4l2_subdev *sd, u32 input, u32 output,
322 u32 config)
323 {
324 struct s2250 *state = to_state(sd);
325 struct i2c_client *client = v4l2_get_subdevdata(sd);
326 int vidsys;
327
328 vidsys = (state->std == V4L2_STD_NTSC) ? 0x01 : 0x00;
329 if (input == 0) {
330 /* composite */
331 write_reg_fp(client, 0x20, 0x020 | vidsys);
332 write_reg_fp(client, 0x21, 0x662);
333 write_reg_fp(client, 0x140, 0x060);
334 } else if (input == 1) {
335 /* S-Video */
336 write_reg_fp(client, 0x20, 0x040 | vidsys);
337 write_reg_fp(client, 0x21, 0x666);
338 write_reg_fp(client, 0x140, 0x060);
339 } else {
340 return -EINVAL;
341 }
342 state->input = input;
343 return 0;
344 }
345
s2250_s_std(struct v4l2_subdev * sd,v4l2_std_id norm)346 static int s2250_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
347 {
348 struct s2250 *state = to_state(sd);
349 struct i2c_client *client = v4l2_get_subdevdata(sd);
350 u16 vidsource;
351
352 vidsource = (state->input == 1) ? 0x040 : 0x020;
353 switch (norm) {
354 case V4L2_STD_NTSC:
355 write_regs_fp(client, vid_regs_fp);
356 write_reg_fp(client, 0x20, vidsource | 1);
357 break;
358 case V4L2_STD_PAL:
359 write_regs_fp(client, vid_regs_fp);
360 write_regs_fp(client, vid_regs_fp_pal);
361 write_reg_fp(client, 0x20, vidsource);
362 break;
363 default:
364 return -EINVAL;
365 }
366 state->std = norm;
367 return 0;
368 }
369
s2250_queryctrl(struct v4l2_subdev * sd,struct v4l2_queryctrl * query)370 static int s2250_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *query)
371 {
372 switch (query->id) {
373 case V4L2_CID_BRIGHTNESS:
374 return v4l2_ctrl_query_fill(query, 0, 100, 1, 50);
375 case V4L2_CID_CONTRAST:
376 return v4l2_ctrl_query_fill(query, 0, 100, 1, 50);
377 case V4L2_CID_SATURATION:
378 return v4l2_ctrl_query_fill(query, 0, 100, 1, 50);
379 case V4L2_CID_HUE:
380 return v4l2_ctrl_query_fill(query, -50, 50, 1, 0);
381 default:
382 return -EINVAL;
383 }
384 return 0;
385 }
386
s2250_s_ctrl(struct v4l2_subdev * sd,struct v4l2_control * ctrl)387 static int s2250_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
388 {
389 struct s2250 *state = to_state(sd);
390 struct i2c_client *client = v4l2_get_subdevdata(sd);
391 int value1;
392 u16 oldvalue;
393
394 switch (ctrl->id) {
395 case V4L2_CID_BRIGHTNESS:
396 if (ctrl->value > 100)
397 state->brightness = 100;
398 else if (ctrl->value < 0)
399 state->brightness = 0;
400 else
401 state->brightness = ctrl->value;
402 value1 = (state->brightness - 50) * 255 / 100;
403 read_reg_fp(client, VPX322_ADDR_BRIGHTNESS0, &oldvalue);
404 write_reg_fp(client, VPX322_ADDR_BRIGHTNESS0,
405 value1 | (oldvalue & ~0xff));
406 read_reg_fp(client, VPX322_ADDR_BRIGHTNESS1, &oldvalue);
407 write_reg_fp(client, VPX322_ADDR_BRIGHTNESS1,
408 value1 | (oldvalue & ~0xff));
409 write_reg_fp(client, 0x140, 0x60);
410 break;
411 case V4L2_CID_CONTRAST:
412 if (ctrl->value > 100)
413 state->contrast = 100;
414 else if (ctrl->value < 0)
415 state->contrast = 0;
416 else
417 state->contrast = ctrl->value;
418 value1 = state->contrast * 0x40 / 100;
419 if (value1 > 0x3f)
420 value1 = 0x3f; /* max */
421 read_reg_fp(client, VPX322_ADDR_CONTRAST0, &oldvalue);
422 write_reg_fp(client, VPX322_ADDR_CONTRAST0,
423 value1 | (oldvalue & ~0x3f));
424 read_reg_fp(client, VPX322_ADDR_CONTRAST1, &oldvalue);
425 write_reg_fp(client, VPX322_ADDR_CONTRAST1,
426 value1 | (oldvalue & ~0x3f));
427 write_reg_fp(client, 0x140, 0x60);
428 break;
429 case V4L2_CID_SATURATION:
430 if (ctrl->value > 100)
431 state->saturation = 100;
432 else if (ctrl->value < 0)
433 state->saturation = 0;
434 else
435 state->saturation = ctrl->value;
436 value1 = state->saturation * 4140 / 100;
437 if (value1 > 4094)
438 value1 = 4094;
439 write_reg_fp(client, VPX322_ADDR_SAT, value1);
440 break;
441 case V4L2_CID_HUE:
442 if (ctrl->value > 50)
443 state->hue = 50;
444 else if (ctrl->value < -50)
445 state->hue = -50;
446 else
447 state->hue = ctrl->value;
448 /* clamp the hue range */
449 value1 = state->hue * 280 / 50;
450 write_reg_fp(client, VPX322_ADDR_HUE, value1);
451 break;
452 default:
453 return -EINVAL;
454 }
455 return 0;
456 }
457
s2250_g_ctrl(struct v4l2_subdev * sd,struct v4l2_control * ctrl)458 static int s2250_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
459 {
460 struct s2250 *state = to_state(sd);
461
462 switch (ctrl->id) {
463 case V4L2_CID_BRIGHTNESS:
464 ctrl->value = state->brightness;
465 break;
466 case V4L2_CID_CONTRAST:
467 ctrl->value = state->contrast;
468 break;
469 case V4L2_CID_SATURATION:
470 ctrl->value = state->saturation;
471 break;
472 case V4L2_CID_HUE:
473 ctrl->value = state->hue;
474 break;
475 default:
476 return -EINVAL;
477 }
478 return 0;
479 }
480
s2250_s_mbus_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * fmt)481 static int s2250_s_mbus_fmt(struct v4l2_subdev *sd,
482 struct v4l2_mbus_framefmt *fmt)
483 {
484 struct s2250 *state = to_state(sd);
485 struct i2c_client *client = v4l2_get_subdevdata(sd);
486
487 if (fmt->height < 640) {
488 write_reg_fp(client, 0x12b, state->reg12b_val | 0x400);
489 write_reg_fp(client, 0x140, 0x060);
490 } else {
491 write_reg_fp(client, 0x12b, state->reg12b_val & ~0x400);
492 write_reg_fp(client, 0x140, 0x060);
493 }
494 return 0;
495 }
496
s2250_s_audio_routing(struct v4l2_subdev * sd,u32 input,u32 output,u32 config)497 static int s2250_s_audio_routing(struct v4l2_subdev *sd, u32 input, u32 output,
498 u32 config)
499 {
500 struct s2250 *state = to_state(sd);
501
502 switch (input) {
503 case 0:
504 write_reg(state->audio, 0x08, 0x02); /* Line In */
505 break;
506 case 1:
507 write_reg(state->audio, 0x08, 0x04); /* Mic */
508 break;
509 case 2:
510 write_reg(state->audio, 0x08, 0x05); /* Mic Boost */
511 break;
512 default:
513 return -EINVAL;
514 }
515 state->audio_input = input;
516 return 0;
517 }
518
519
s2250_log_status(struct v4l2_subdev * sd)520 static int s2250_log_status(struct v4l2_subdev *sd)
521 {
522 struct s2250 *state = to_state(sd);
523
524 v4l2_info(sd, "Standard: %s\n", state->std == V4L2_STD_NTSC ? "NTSC" :
525 state->std == V4L2_STD_PAL ? "PAL" :
526 state->std == V4L2_STD_SECAM ? "SECAM" :
527 "unknown");
528 v4l2_info(sd, "Input: %s\n", state->input == 0 ? "Composite" :
529 state->input == 1 ? "S-video" :
530 "error");
531 v4l2_info(sd, "Brightness: %d\n", state->brightness);
532 v4l2_info(sd, "Contrast: %d\n", state->contrast);
533 v4l2_info(sd, "Saturation: %d\n", state->saturation);
534 v4l2_info(sd, "Hue: %d\n", state->hue); return 0;
535 v4l2_info(sd, "Audio input: %s\n", state->audio_input == 0 ? "Line In" :
536 state->audio_input == 1 ? "Mic" :
537 state->audio_input == 2 ? "Mic Boost" :
538 "error");
539 return 0;
540 }
541
542 /* --------------------------------------------------------------------------*/
543
544 static const struct v4l2_subdev_core_ops s2250_core_ops = {
545 .log_status = s2250_log_status,
546 .g_ctrl = s2250_g_ctrl,
547 .s_ctrl = s2250_s_ctrl,
548 .queryctrl = s2250_queryctrl,
549 .s_std = s2250_s_std,
550 };
551
552 static const struct v4l2_subdev_audio_ops s2250_audio_ops = {
553 .s_routing = s2250_s_audio_routing,
554 };
555
556 static const struct v4l2_subdev_video_ops s2250_video_ops = {
557 .s_routing = s2250_s_video_routing,
558 .s_mbus_fmt = s2250_s_mbus_fmt,
559 };
560
561 static const struct v4l2_subdev_ops s2250_ops = {
562 .core = &s2250_core_ops,
563 .audio = &s2250_audio_ops,
564 .video = &s2250_video_ops,
565 };
566
567 /* --------------------------------------------------------------------------*/
568
s2250_probe(struct i2c_client * client,const struct i2c_device_id * id)569 static int s2250_probe(struct i2c_client *client,
570 const struct i2c_device_id *id)
571 {
572 struct i2c_client *audio;
573 struct i2c_adapter *adapter = client->adapter;
574 struct s2250 *state;
575 struct v4l2_subdev *sd;
576 u8 *data;
577 struct go7007 *go = i2c_get_adapdata(adapter);
578 struct go7007_usb *usb = go->hpi_context;
579
580 audio = i2c_new_dummy(adapter, TLV320_ADDRESS >> 1);
581 if (audio == NULL)
582 return -ENOMEM;
583
584 state = kmalloc(sizeof(struct s2250), GFP_KERNEL);
585 if (state == NULL) {
586 i2c_unregister_device(audio);
587 return -ENOMEM;
588 }
589
590 sd = &state->sd;
591 v4l2_i2c_subdev_init(sd, client, &s2250_ops);
592
593 v4l2_info(sd, "initializing %s at address 0x%x on %s\n",
594 "Sensoray 2250/2251", client->addr, client->adapter->name);
595
596 state->std = V4L2_STD_NTSC;
597 state->brightness = 50;
598 state->contrast = 50;
599 state->saturation = 50;
600 state->hue = 0;
601 state->audio = audio;
602
603 /* initialize the audio */
604 if (write_regs(audio, aud_regs) < 0) {
605 printk(KERN_ERR
606 "s2250: error initializing audio\n");
607 i2c_unregister_device(audio);
608 kfree(state);
609 return 0;
610 }
611
612 if (write_regs(client, vid_regs) < 0) {
613 printk(KERN_ERR
614 "s2250: error initializing decoder\n");
615 i2c_unregister_device(audio);
616 kfree(state);
617 return 0;
618 }
619 if (write_regs_fp(client, vid_regs_fp) < 0) {
620 printk(KERN_ERR
621 "s2250: error initializing decoder\n");
622 i2c_unregister_device(audio);
623 kfree(state);
624 return 0;
625 }
626 /* set default channel */
627 /* composite */
628 write_reg_fp(client, 0x20, 0x020 | 1);
629 write_reg_fp(client, 0x21, 0x662);
630 write_reg_fp(client, 0x140, 0x060);
631
632 /* set default audio input */
633 state->audio_input = 0;
634 write_reg(client, 0x08, 0x02); /* Line In */
635
636 if (mutex_lock_interruptible(&usb->i2c_lock) == 0) {
637 data = kzalloc(16, GFP_KERNEL);
638 if (data != NULL) {
639 int rc;
640 rc = go7007_usb_vendor_request(go, 0x41, 0, 0,
641 data, 16, 1);
642 if (rc > 0) {
643 u8 mask;
644 data[0] = 0;
645 mask = 1<<5;
646 data[0] &= ~mask;
647 data[1] |= mask;
648 go7007_usb_vendor_request(go, 0x40, 0,
649 (data[1]<<8)
650 + data[1],
651 data, 16, 0);
652 }
653 kfree(data);
654 }
655 mutex_unlock(&usb->i2c_lock);
656 }
657
658 v4l2_info(sd, "initialized successfully\n");
659 return 0;
660 }
661
s2250_remove(struct i2c_client * client)662 static int s2250_remove(struct i2c_client *client)
663 {
664 struct v4l2_subdev *sd = i2c_get_clientdata(client);
665
666 v4l2_device_unregister_subdev(sd);
667 kfree(to_state(sd));
668 return 0;
669 }
670
671 static const struct i2c_device_id s2250_id[] = {
672 { "s2250", 0 },
673 { }
674 };
675 MODULE_DEVICE_TABLE(i2c, s2250_id);
676
677 static struct i2c_driver s2250_driver = {
678 .driver = {
679 .owner = THIS_MODULE,
680 .name = "s2250",
681 },
682 .probe = s2250_probe,
683 .remove = s2250_remove,
684 .id_table = s2250_id,
685 };
686
init_s2250(void)687 static __init int init_s2250(void)
688 {
689 return i2c_add_driver(&s2250_driver);
690 }
691
exit_s2250(void)692 static __exit void exit_s2250(void)
693 {
694 i2c_del_driver(&s2250_driver);
695 }
696
697 module_init(init_s2250);
698 module_exit(exit_s2250);
699