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
16MODULE_DESCRIPTION("Sensoray 2250/2251 i2c v4l2 subdev driver");
17MODULE_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
35struct go7007_usb_board {
36	unsigned int flags;
37	struct go7007_board_info main_info;
38};
39
40struct 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
49static 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
67static unsigned char vid_regs[] = {
68	0xF2, 0x0f,
69	0xAA, 0x00,
70	0xF8, 0xff,
71	0x00, 0x00,
72};
73
74static 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 */
100static 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
111struct 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
125static 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.*/
131static 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
151static 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
185static 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
249static 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
290static 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
303static 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
319static 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
344static 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
363static 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
400static 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
424static 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
447static 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
467static const struct v4l2_ctrl_ops s2250_ctrl_ops = {
468	.s_ctrl = s2250_s_ctrl,
469};
470
471static const struct v4l2_subdev_core_ops s2250_core_ops = {
472	.log_status = s2250_log_status,
473};
474
475static const struct v4l2_subdev_audio_ops s2250_audio_ops = {
476	.s_routing = s2250_s_audio_routing,
477};
478
479static const struct v4l2_subdev_video_ops s2250_video_ops = {
480	.s_std = s2250_s_std,
481	.s_routing = s2250_s_video_routing,
482};
483
484static const struct v4l2_subdev_pad_ops s2250_pad_ops = {
485	.set_fmt = s2250_set_fmt,
486};
487
488static 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
497static 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
596fail:
597	i2c_unregister_device(audio);
598	v4l2_ctrl_handler_free(&state->hdl);
599	kfree(state);
600	return err;
601}
602
603static 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
613static const struct i2c_device_id s2250_id[] = {
614	{ "s2250", 0 },
615	{ }
616};
617MODULE_DEVICE_TABLE(i2c, s2250_id);
618
619static struct i2c_driver s2250_driver = {
620	.driver = {
621		.name	= "s2250",
622	},
623	.probe		= s2250_probe,
624	.remove		= s2250_remove,
625	.id_table	= s2250_id,
626};
627
628module_i2c_driver(s2250_driver);
629