1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) 2008 Sensoray Company Inc.
4  */
5 
6 #include <linux/module.h>
7 #include <linux/usb.h>
8 #include <linux/i2c.h>
9 #include <linux/videodev2.h>
10 #include <linux/slab.h>
11 #include <media/v4l2-device.h>
12 #include <media/v4l2-common.h>
13 #include <media/v4l2-subdev.h>
14 #include "go7007-priv.h"
15 
16 MODULE_DESCRIPTION("Sensoray 2250/2251 i2c v4l2 subdev driver");
17 MODULE_LICENSE("GPL v2");
18 
19 /*
20  * Note: this board has two i2c devices: a vpx3226f and a tlv320aic23b.
21  * Due to the unusual way these are accessed on this device we do not
22  * reuse the i2c drivers, but instead they are implemented in this
23  * driver. It would be nice to improve on this, though.
24  */
25 
26 #define TLV320_ADDRESS      0x34
27 #define VPX322_ADDR_ANALOGCONTROL1	0x02
28 #define VPX322_ADDR_BRIGHTNESS0		0x0127
29 #define VPX322_ADDR_BRIGHTNESS1		0x0131
30 #define VPX322_ADDR_CONTRAST0		0x0128
31 #define VPX322_ADDR_CONTRAST1		0x0132
32 #define VPX322_ADDR_HUE			0x00dc
33 #define VPX322_ADDR_SAT			0x0030
34 
35 struct go7007_usb_board {
36 	unsigned int flags;
37 	struct go7007_board_info main_info;
38 };
39 
40 struct go7007_usb {
41 	struct go7007_usb_board *board;
42 	struct mutex i2c_lock;
43 	struct usb_device *usbdev;
44 	struct urb *video_urbs[8];
45 	struct urb *audio_urbs[8];
46 	struct urb *intr_urb;
47 };
48 
49 static unsigned char aud_regs[] = {
50 	0x1e, 0x00,
51 	0x00, 0x17,
52 	0x02, 0x17,
53 	0x04, 0xf9,
54 	0x06, 0xf9,
55 	0x08, 0x02,
56 	0x0a, 0x00,
57 	0x0c, 0x00,
58 	0x0a, 0x00,
59 	0x0c, 0x00,
60 	0x0e, 0x02,
61 	0x10, 0x00,
62 	0x12, 0x01,
63 	0x00, 0x00,
64 };
65 
66 
67 static unsigned char vid_regs[] = {
68 	0xF2, 0x0f,
69 	0xAA, 0x00,
70 	0xF8, 0xff,
71 	0x00, 0x00,
72 };
73 
74 static u16 vid_regs_fp[] = {
75 	0x028, 0x067,
76 	0x120, 0x016,
77 	0x121, 0xcF2,
78 	0x122, 0x0F2,
79 	0x123, 0x00c,
80 	0x124, 0x2d0,
81 	0x125, 0x2e0,
82 	0x126, 0x004,
83 	0x128, 0x1E0,
84 	0x12A, 0x016,
85 	0x12B, 0x0F2,
86 	0x12C, 0x0F2,
87 	0x12D, 0x00c,
88 	0x12E, 0x2d0,
89 	0x12F, 0x2e0,
90 	0x130, 0x004,
91 	0x132, 0x1E0,
92 	0x140, 0x060,
93 	0x153, 0x00C,
94 	0x154, 0x200,
95 	0x150, 0x801,
96 	0x000, 0x000
97 };
98 
99 /* PAL specific values */
100 static u16 vid_regs_fp_pal[] = {
101 	0x120, 0x017,
102 	0x121, 0xd22,
103 	0x122, 0x122,
104 	0x12A, 0x017,
105 	0x12B, 0x122,
106 	0x12C, 0x122,
107 	0x140, 0x060,
108 	0x000, 0x000,
109 };
110 
111 struct s2250 {
112 	struct v4l2_subdev sd;
113 	struct v4l2_ctrl_handler hdl;
114 	v4l2_std_id std;
115 	int input;
116 	int brightness;
117 	int contrast;
118 	int saturation;
119 	int hue;
120 	int reg12b_val;
121 	int audio_input;
122 	struct i2c_client *audio;
123 };
124 
125 static inline struct s2250 *to_state(struct v4l2_subdev *sd)
126 {
127 	return container_of(sd, struct s2250, sd);
128 }
129 
130 /* from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
131 static int go7007_usb_vendor_request(struct go7007 *go, u16 request,
132 	u16 value, u16 index, void *transfer_buffer, int length, int in)
133 {
134 	struct go7007_usb *usb = go->hpi_context;
135 	int timeout = 5000;
136 
137 	if (in) {
138 		return usb_control_msg(usb->usbdev,
139 				usb_rcvctrlpipe(usb->usbdev, 0), request,
140 				USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
141 				value, index, transfer_buffer, length, timeout);
142 	} else {
143 		return usb_control_msg(usb->usbdev,
144 				usb_sndctrlpipe(usb->usbdev, 0), request,
145 				USB_TYPE_VENDOR | USB_RECIP_DEVICE,
146 				value, index, transfer_buffer, length, timeout);
147 	}
148 }
149 /* end from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
150 
151 static int write_reg(struct i2c_client *client, u8 reg, u8 value)
152 {
153 	struct go7007 *go = i2c_get_adapdata(client->adapter);
154 	struct go7007_usb *usb;
155 	int rc;
156 	int dev_addr = client->addr << 1;  /* firmware wants 8-bit address */
157 	u8 *buf;
158 
159 	if (go == NULL)
160 		return -ENODEV;
161 
162 	if (go->status == STATUS_SHUTDOWN)
163 		return -EBUSY;
164 
165 	buf = kzalloc(16, GFP_KERNEL);
166 	if (buf == NULL)
167 		return -ENOMEM;
168 
169 	usb = go->hpi_context;
170 	if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
171 		dev_info(&client->dev, "i2c lock failed\n");
172 		kfree(buf);
173 		return -EINTR;
174 	}
175 	rc = go7007_usb_vendor_request(go, 0x55, dev_addr,
176 				       (reg<<8 | value),
177 				       buf,
178 				       16, 1);
179 
180 	mutex_unlock(&usb->i2c_lock);
181 	kfree(buf);
182 	return rc;
183 }
184 
185 static int write_reg_fp(struct i2c_client *client, u16 addr, u16 val)
186 {
187 	struct go7007 *go = i2c_get_adapdata(client->adapter);
188 	struct go7007_usb *usb;
189 	int rc;
190 	u8 *buf;
191 	struct s2250 *dec = i2c_get_clientdata(client);
192 
193 	if (go == NULL)
194 		return -ENODEV;
195 
196 	if (go->status == STATUS_SHUTDOWN)
197 		return -EBUSY;
198 
199 	buf = kzalloc(16, GFP_KERNEL);
200 
201 	if (buf == NULL)
202 		return -ENOMEM;
203 
204 
205 
206 	memset(buf, 0xcd, 6);
207 
208 	usb = go->hpi_context;
209 	if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
210 		dev_info(&client->dev, "i2c lock failed\n");
211 		kfree(buf);
212 		return -EINTR;
213 	}
214 	rc = go7007_usb_vendor_request(go, 0x57, addr, val, buf, 16, 1);
215 	mutex_unlock(&usb->i2c_lock);
216 	if (rc < 0) {
217 		kfree(buf);
218 		return rc;
219 	}
220 
221 	if (buf[0] == 0) {
222 		unsigned int subaddr, val_read;
223 
224 		subaddr = (buf[4] << 8) + buf[5];
225 		val_read = (buf[2] << 8) + buf[3];
226 		kfree(buf);
227 		if (val_read != val) {
228 			dev_info(&client->dev, "invalid fp write %x %x\n",
229 				 val_read, val);
230 			return -EFAULT;
231 		}
232 		if (subaddr != addr) {
233 			dev_info(&client->dev, "invalid fp write addr %x %x\n",
234 				 subaddr, addr);
235 			return -EFAULT;
236 		}
237 	} else {
238 		kfree(buf);
239 		return -EFAULT;
240 	}
241 
242 	/* save last 12b value */
243 	if (addr == 0x12b)
244 		dec->reg12b_val = val;
245 
246 	return 0;
247 }
248 
249 static int read_reg_fp(struct i2c_client *client, u16 addr, u16 *val)
250 {
251 	struct go7007 *go = i2c_get_adapdata(client->adapter);
252 	struct go7007_usb *usb;
253 	int rc;
254 	u8 *buf;
255 
256 	if (go == NULL)
257 		return -ENODEV;
258 
259 	if (go->status == STATUS_SHUTDOWN)
260 		return -EBUSY;
261 
262 	buf = kzalloc(16, GFP_KERNEL);
263 
264 	if (buf == NULL)
265 		return -ENOMEM;
266 
267 
268 
269 	memset(buf, 0xcd, 6);
270 	usb = go->hpi_context;
271 	if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
272 		dev_info(&client->dev, "i2c lock failed\n");
273 		kfree(buf);
274 		return -EINTR;
275 	}
276 	rc = go7007_usb_vendor_request(go, 0x58, addr, 0, buf, 16, 1);
277 	mutex_unlock(&usb->i2c_lock);
278 	if (rc < 0) {
279 		kfree(buf);
280 		return rc;
281 	}
282 
283 	*val = (buf[0] << 8) | buf[1];
284 	kfree(buf);
285 
286 	return 0;
287 }
288 
289 
290 static int write_regs(struct i2c_client *client, u8 *regs)
291 {
292 	int i;
293 
294 	for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
295 		if (write_reg(client, regs[i], regs[i+1]) < 0) {
296 			dev_info(&client->dev, "failed\n");
297 			return -1;
298 		}
299 	}
300 	return 0;
301 }
302 
303 static int write_regs_fp(struct i2c_client *client, u16 *regs)
304 {
305 	int i;
306 
307 	for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
308 		if (write_reg_fp(client, regs[i], regs[i+1]) < 0) {
309 			dev_info(&client->dev, "failed fp\n");
310 			return -1;
311 		}
312 	}
313 	return 0;
314 }
315 
316 
317 /* ------------------------------------------------------------------------- */
318 
319 static int s2250_s_video_routing(struct v4l2_subdev *sd, u32 input, u32 output,
320 				 u32 config)
321 {
322 	struct s2250 *state = to_state(sd);
323 	struct i2c_client *client = v4l2_get_subdevdata(sd);
324 	int vidsys;
325 
326 	vidsys = (state->std == V4L2_STD_NTSC) ? 0x01 : 0x00;
327 	if (input == 0) {
328 		/* composite */
329 		write_reg_fp(client, 0x20, 0x020 | vidsys);
330 		write_reg_fp(client, 0x21, 0x662);
331 		write_reg_fp(client, 0x140, 0x060);
332 	} else if (input == 1) {
333 		/* S-Video */
334 		write_reg_fp(client, 0x20, 0x040 | vidsys);
335 		write_reg_fp(client, 0x21, 0x666);
336 		write_reg_fp(client, 0x140, 0x060);
337 	} else {
338 		return -EINVAL;
339 	}
340 	state->input = input;
341 	return 0;
342 }
343 
344 static int s2250_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
345 {
346 	struct s2250 *state = to_state(sd);
347 	struct i2c_client *client = v4l2_get_subdevdata(sd);
348 	u16 vidsource;
349 
350 	vidsource = (state->input == 1) ? 0x040 : 0x020;
351 	if (norm & V4L2_STD_625_50) {
352 		write_regs_fp(client, vid_regs_fp);
353 		write_regs_fp(client, vid_regs_fp_pal);
354 		write_reg_fp(client, 0x20, vidsource);
355 	} else {
356 		write_regs_fp(client, vid_regs_fp);
357 		write_reg_fp(client, 0x20, vidsource | 1);
358 	}
359 	state->std = norm;
360 	return 0;
361 }
362 
363 static int s2250_s_ctrl(struct v4l2_ctrl *ctrl)
364 {
365 	struct s2250 *state = container_of(ctrl->handler, struct s2250, hdl);
366 	struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
367 	u16 oldvalue;
368 
369 	switch (ctrl->id) {
370 	case V4L2_CID_BRIGHTNESS:
371 		read_reg_fp(client, VPX322_ADDR_BRIGHTNESS0, &oldvalue);
372 		write_reg_fp(client, VPX322_ADDR_BRIGHTNESS0,
373 			     ctrl->val | (oldvalue & ~0xff));
374 		read_reg_fp(client, VPX322_ADDR_BRIGHTNESS1, &oldvalue);
375 		write_reg_fp(client, VPX322_ADDR_BRIGHTNESS1,
376 			     ctrl->val | (oldvalue & ~0xff));
377 		write_reg_fp(client, 0x140, 0x60);
378 		break;
379 	case V4L2_CID_CONTRAST:
380 		read_reg_fp(client, VPX322_ADDR_CONTRAST0, &oldvalue);
381 		write_reg_fp(client, VPX322_ADDR_CONTRAST0,
382 			     ctrl->val | (oldvalue & ~0x3f));
383 		read_reg_fp(client, VPX322_ADDR_CONTRAST1, &oldvalue);
384 		write_reg_fp(client, VPX322_ADDR_CONTRAST1,
385 			     ctrl->val | (oldvalue & ~0x3f));
386 		write_reg_fp(client, 0x140, 0x60);
387 		break;
388 	case V4L2_CID_SATURATION:
389 		write_reg_fp(client, VPX322_ADDR_SAT, ctrl->val);
390 		break;
391 	case V4L2_CID_HUE:
392 		write_reg_fp(client, VPX322_ADDR_HUE, ctrl->val);
393 		break;
394 	default:
395 		return -EINVAL;
396 	}
397 	return 0;
398 }
399 
400 static int s2250_set_fmt(struct v4l2_subdev *sd,
401 		struct v4l2_subdev_state *sd_state,
402 		struct v4l2_subdev_format *format)
403 {
404 	struct v4l2_mbus_framefmt *fmt = &format->format;
405 	struct s2250 *state = to_state(sd);
406 	struct i2c_client *client = v4l2_get_subdevdata(sd);
407 
408 	if (format->pad)
409 		return -EINVAL;
410 
411 	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
412 		return 0;
413 
414 	if (fmt->height < 640) {
415 		write_reg_fp(client, 0x12b, state->reg12b_val | 0x400);
416 		write_reg_fp(client, 0x140, 0x060);
417 	} else {
418 		write_reg_fp(client, 0x12b, state->reg12b_val & ~0x400);
419 		write_reg_fp(client, 0x140, 0x060);
420 	}
421 	return 0;
422 }
423 
424 static int s2250_s_audio_routing(struct v4l2_subdev *sd, u32 input, u32 output,
425 				 u32 config)
426 {
427 	struct s2250 *state = to_state(sd);
428 
429 	switch (input) {
430 	case 0:
431 		write_reg(state->audio, 0x08, 0x02); /* Line In */
432 		break;
433 	case 1:
434 		write_reg(state->audio, 0x08, 0x04); /* Mic */
435 		break;
436 	case 2:
437 		write_reg(state->audio, 0x08, 0x05); /* Mic Boost */
438 		break;
439 	default:
440 		return -EINVAL;
441 	}
442 	state->audio_input = input;
443 	return 0;
444 }
445 
446 
447 static int s2250_log_status(struct v4l2_subdev *sd)
448 {
449 	struct s2250 *state = to_state(sd);
450 
451 	v4l2_info(sd, "Standard: %s\n", state->std == V4L2_STD_NTSC ? "NTSC" :
452 					state->std == V4L2_STD_PAL ? "PAL" :
453 					state->std == V4L2_STD_SECAM ? "SECAM" :
454 					"unknown");
455 	v4l2_info(sd, "Input: %s\n", state->input == 0 ? "Composite" :
456 					state->input == 1 ? "S-video" :
457 					"error");
458 	v4l2_info(sd, "Audio input: %s\n", state->audio_input == 0 ? "Line In" :
459 					state->audio_input == 1 ? "Mic" :
460 					state->audio_input == 2 ? "Mic Boost" :
461 					"error");
462 	return v4l2_ctrl_subdev_log_status(sd);
463 }
464 
465 /* --------------------------------------------------------------------------*/
466 
467 static const struct v4l2_ctrl_ops s2250_ctrl_ops = {
468 	.s_ctrl = s2250_s_ctrl,
469 };
470 
471 static const struct v4l2_subdev_core_ops s2250_core_ops = {
472 	.log_status = s2250_log_status,
473 };
474 
475 static const struct v4l2_subdev_audio_ops s2250_audio_ops = {
476 	.s_routing = s2250_s_audio_routing,
477 };
478 
479 static const struct v4l2_subdev_video_ops s2250_video_ops = {
480 	.s_std = s2250_s_std,
481 	.s_routing = s2250_s_video_routing,
482 };
483 
484 static const struct v4l2_subdev_pad_ops s2250_pad_ops = {
485 	.set_fmt = s2250_set_fmt,
486 };
487 
488 static const struct v4l2_subdev_ops s2250_ops = {
489 	.core = &s2250_core_ops,
490 	.audio = &s2250_audio_ops,
491 	.video = &s2250_video_ops,
492 	.pad = &s2250_pad_ops,
493 };
494 
495 /* --------------------------------------------------------------------------*/
496 
497 static int s2250_probe(struct i2c_client *client)
498 {
499 	struct i2c_client *audio;
500 	struct i2c_adapter *adapter = client->adapter;
501 	struct s2250 *state;
502 	struct v4l2_subdev *sd;
503 	u8 *data;
504 	struct go7007 *go = i2c_get_adapdata(adapter);
505 	struct go7007_usb *usb = go->hpi_context;
506 	int err = -EIO;
507 
508 	audio = i2c_new_dummy_device(adapter, TLV320_ADDRESS >> 1);
509 	if (IS_ERR(audio))
510 		return PTR_ERR(audio);
511 
512 	state = kzalloc(sizeof(struct s2250), GFP_KERNEL);
513 	if (state == NULL) {
514 		i2c_unregister_device(audio);
515 		return -ENOMEM;
516 	}
517 
518 	sd = &state->sd;
519 	v4l2_i2c_subdev_init(sd, client, &s2250_ops);
520 
521 	v4l2_info(sd, "initializing %s at address 0x%x on %s\n",
522 	       "Sensoray 2250/2251", client->addr, client->adapter->name);
523 
524 	v4l2_ctrl_handler_init(&state->hdl, 4);
525 	v4l2_ctrl_new_std(&state->hdl, &s2250_ctrl_ops,
526 		V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
527 	v4l2_ctrl_new_std(&state->hdl, &s2250_ctrl_ops,
528 		V4L2_CID_CONTRAST, 0, 0x3f, 1, 0x32);
529 	v4l2_ctrl_new_std(&state->hdl, &s2250_ctrl_ops,
530 		V4L2_CID_SATURATION, 0, 4094, 1, 2070);
531 	v4l2_ctrl_new_std(&state->hdl, &s2250_ctrl_ops,
532 		V4L2_CID_HUE, -512, 511, 1, 0);
533 	sd->ctrl_handler = &state->hdl;
534 	if (state->hdl.error) {
535 		err = state->hdl.error;
536 		goto fail;
537 	}
538 
539 	state->std = V4L2_STD_NTSC;
540 	state->brightness = 50;
541 	state->contrast = 50;
542 	state->saturation = 50;
543 	state->hue = 0;
544 	state->audio = audio;
545 
546 	/* initialize the audio */
547 	if (write_regs(audio, aud_regs) < 0) {
548 		dev_err(&client->dev, "error initializing audio\n");
549 		goto fail;
550 	}
551 
552 	if (write_regs(client, vid_regs) < 0) {
553 		dev_err(&client->dev, "error initializing decoder\n");
554 		goto fail;
555 	}
556 	if (write_regs_fp(client, vid_regs_fp) < 0) {
557 		dev_err(&client->dev, "error initializing decoder\n");
558 		goto fail;
559 	}
560 	/* set default channel */
561 	/* composite */
562 	write_reg_fp(client, 0x20, 0x020 | 1);
563 	write_reg_fp(client, 0x21, 0x662);
564 	write_reg_fp(client, 0x140, 0x060);
565 
566 	/* set default audio input */
567 	state->audio_input = 0;
568 	write_reg(client, 0x08, 0x02); /* Line In */
569 
570 	if (mutex_lock_interruptible(&usb->i2c_lock) == 0) {
571 		data = kzalloc(16, GFP_KERNEL);
572 		if (data != NULL) {
573 			int rc = go7007_usb_vendor_request(go, 0x41, 0, 0,
574 						       data, 16, 1);
575 
576 			if (rc > 0) {
577 				u8 mask;
578 
579 				data[0] = 0;
580 				mask = 1<<5;
581 				data[0] &= ~mask;
582 				data[1] |= mask;
583 				go7007_usb_vendor_request(go, 0x40, 0,
584 							  (data[1]<<8)
585 							  + data[1],
586 							  data, 16, 0);
587 			}
588 			kfree(data);
589 		}
590 		mutex_unlock(&usb->i2c_lock);
591 	}
592 
593 	v4l2_info(sd, "initialized successfully\n");
594 	return 0;
595 
596 fail:
597 	i2c_unregister_device(audio);
598 	v4l2_ctrl_handler_free(&state->hdl);
599 	kfree(state);
600 	return err;
601 }
602 
603 static void s2250_remove(struct i2c_client *client)
604 {
605 	struct s2250 *state = to_state(i2c_get_clientdata(client));
606 
607 	i2c_unregister_device(state->audio);
608 	v4l2_device_unregister_subdev(&state->sd);
609 	v4l2_ctrl_handler_free(&state->hdl);
610 	kfree(state);
611 }
612 
613 static const struct i2c_device_id s2250_id[] = {
614 	{ "s2250", 0 },
615 	{ }
616 };
617 MODULE_DEVICE_TABLE(i2c, s2250_id);
618 
619 static struct i2c_driver s2250_driver = {
620 	.driver = {
621 		.name	= "s2250",
622 	},
623 	.probe_new	= s2250_probe,
624 	.remove		= s2250_remove,
625 	.id_table	= s2250_id,
626 };
627 
628 module_i2c_driver(s2250_driver);
629