aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/adv7343.c
blob: 41b2930d0ce4e59640ab946e81db7e234f5aca06 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
/*
 * adv7343 - ADV7343 Video Encoder Driver
 *
 * The encoder hardware does not support SECAM.
 *
 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation version 2.
 *
 * This program is distributed .as is. WITHOUT ANY WARRANTY of any
 * kind, whether express or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/videodev2.h>
#include <linux/uaccess.h>

#include <media/adv7343.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>

#include "adv7343_regs.h"

MODULE_DESCRIPTION("ADV7343 video encoder driver");
MODULE_LICENSE("GPL");

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-1");

struct adv7343_state {
	struct v4l2_subdev sd;
	u8 reg00;
	u8 reg01;
	u8 reg02;
	u8 reg35;
	u8 reg80;
	u8 reg82;
	int bright;
	int hue;
	int gain;
	u32 output;
	v4l2_std_id std;
};

static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct adv7343_state, sd);
}

static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return i2c_smbus_write_byte_data(client, reg, value);
}

static const u8 adv7343_init_reg_val[] = {
	ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
	ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,

	ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
	ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
	ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
	ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
	ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
	ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
	ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,

	ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
	ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
	ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
	ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
	ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
	ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
	ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
	ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,

	ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
	ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
	ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
};

/*
 * 			    2^32
 * FSC(reg) =  FSC (HZ) * --------
 *			  27000000
 */
static const struct adv7343_std_info stdinfo[] = {
	{
		/* FSC(Hz) = 3,579,545.45 Hz */
		SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
	}, {
		/* FSC(Hz) = 3,575,611.00 Hz */
		SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
	}, {
		/* FSC(Hz) = 3,582,056.00 */
		SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
	}, {
		/* FSC(Hz) = 4,433,618.75 Hz */
		SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
	}, {
		/* FSC(Hz) = 4,433,618.75 Hz */
		SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
	}, {
		/* FSC(Hz) = 4,433,618.75 Hz */
		SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
	}, {
		/* FSC(Hz) = 4,433,618.75 Hz */
		SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
	},
};

static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
{
	struct adv7343_state *state = to_state(sd);
	struct adv7343_std_info *std_info;
	int output_idx, num_std;
	char *fsc_ptr;
	u8 reg, val;
	int err = 0;
	int i = 0;

	output_idx = state->output;

	std_info = (struct adv7343_std_info *)stdinfo;
	num_std = ARRAY_SIZE(stdinfo);

	for (i = 0; i < num_std; i++) {
		if (std_info[i].stdid & std)
			break;
	}

	if (i == num_std) {
		v4l2_dbg(1, debug, sd,
				"Invalid std or std is not supported: %llx\n",
						(unsigned long long)std);
		return -EINVAL;
	}

	/* Set the standard */
	val = state->reg80 & (~(SD_STD_MASK));
	val |= std_info[i].standard_val3;
	err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
	if (err < 0)
		goto setstd_exit;

	state->reg80 = val;

	/* Configure the input mode register */
	val = state->reg01 & (~((u8) INPUT_MODE_MASK));
	val |= SD_INPUT_MODE;
	err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
	if (err < 0)
		goto setstd_exit;

	state->reg01 = val;

	/* Program the sub carrier frequency registers */
	fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
	reg = ADV7343_FSC_REG0;
	for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
		err = adv7343_write(sd, reg, *fsc_ptr);
		if (err < 0)
			goto setstd_exit;
	}

	val = state->reg80;

	/* Filter settings */
	if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
		val &= 0x03;
	else if (std & ~V4L2_STD_SECAM)
		val |= 0x04;

	err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
	if (err < 0)
		goto setstd_exit;

	state->reg80 = val;

setstd_exit:
	if (err != 0)
		v4l2_err(sd, "Error setting std, write failed\n");

	return err;
}

static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
{
	struct adv7343_state *state = to_state(sd);
	unsigned char val;
	int err = 0;

	if (output_type > ADV7343_SVIDEO_ID) {
		v4l2_dbg(1, debug, sd,
			"Invalid output type or output type not supported:%d\n",
								output_type);
		return -EINVAL;
	}

	/* Enable Appropriate DAC */
	val = state->reg00 & 0x03;

	if (output_type == ADV7343_COMPOSITE_ID)
		val |= ADV7343_COMPOSITE_POWER_VALUE;
	else if (output_type == ADV7343_COMPONENT_ID)
		val |= ADV7343_COMPONENT_POWER_VALUE;
	else
		val |= ADV7343_SVIDEO_POWER_VALUE;

	err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
	if (err < 0)
		goto setoutput_exit;

	state->reg00 = val;

	/* Enable YUV output */
	val = state->reg02 | YUV_OUTPUT_SELECT;
	err = adv7343_write(sd, ADV7343_MODE_REG0, val);
	if (err < 0)
		goto setoutput_exit;

	state->reg02 = val;

	/* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
	val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
	err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
	if (err < 0)
		goto setoutput_exit;

	state->reg82 = val;

	/* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
	 * zero */
	val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
	err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
	if (err < 0)
		goto setoutput_exit;

	state->reg35 = val;

setoutput_exit:
	if (err != 0)
		v4l2_err(sd, "Error setting output, write failed\n");

	return err;
}

static int adv7343_log_status(struct v4l2_subdev *sd)
{
	struct adv7343_state *state = to_state(sd);

	v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
	v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
			((state->output == 1) ? "Component" : "S-Video"));
	return 0;
}

static int adv7343_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_BRIGHTNESS:
		return v4l2_ctrl_query_fill(qc, ADV7343_BRIGHTNESS_MIN,
						ADV7343_BRIGHTNESS_MAX, 1,
						ADV7343_BRIGHTNESS_DEF);
	case V4L2_CID_HUE:
		return v4l2_ctrl_query_fill(qc, ADV7343_HUE_MIN,
						ADV7343_HUE_MAX, 1 ,
						ADV7343_HUE_DEF);
	case V4L2_CID_GAIN:
		return v4l2_ctrl_query_fill(qc, ADV7343_GAIN_MIN,
						ADV7343_GAIN_MAX, 1,
						ADV7343_GAIN_DEF);
	default:
		break;
	}

	return 0;
}

static int adv7343_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct adv7343_state *state = to_state(sd);
	int err = 0;

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		if (ctrl->value < ADV7343_BRIGHTNESS_MIN ||
					ctrl->value > ADV7343_BRIGHTNESS_MAX) {
			v4l2_dbg(1, debug, sd,
					"invalid brightness settings %d\n",
								ctrl->value);
			return -ERANGE;
		}

		state->bright = ctrl->value;
		err = adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
					state->bright);
		break;

	case V4L2_CID_HUE:
		if (ctrl->value < ADV7343_HUE_MIN ||
					ctrl->value > ADV7343_HUE_MAX) {
			v4l2_dbg(1, debug, sd, "invalid hue settings %d\n",
								ctrl->value);
			return -ERANGE;
		}

		state->hue = ctrl->value;
		err = adv7343_write(sd, ADV7343_SD_HUE_REG, state->hue);
		break;

	case V4L2_CID_GAIN:
		if (ctrl->value < ADV7343_GAIN_MIN ||
					ctrl->value > ADV7343_GAIN_MAX) {
			v4l2_dbg(1, debug, sd, "invalid gain settings %d\n",
								ctrl->value);
			return -ERANGE;
		}

		if ((ctrl->value > POSITIVE_GAIN_MAX) &&
			(ctrl->value < NEGATIVE_GAIN_MIN)) {
			v4l2_dbg(1, debug, sd,
				"gain settings not within the specified range\n");
			return -ERANGE;
		}

		state->gain = ctrl->value;
		err = adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, state->gain);
		break;

	default:
		return -EINVAL;
	}

	if (err < 0)
		v4l2_err(sd, "Failed to set the encoder controls\n");

	return err;
}

static int adv7343_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct adv7343_state *state = to_state(sd);

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		ctrl->value = state->bright;
		break;

	case V4L2_CID_HUE:
		ctrl->value = state->hue;
		break;

	case V4L2_CID_GAIN:
		ctrl->value = state->gain;
		break;

	default:
		return -EINVAL;
	}

	return 0;
}

static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
				struct v4l2_dbg_chip_ident *chip)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
}

static const struct v4l2_subdev_core_ops adv7343_core_ops = {
	.log_status	= adv7343_log_status,
	.g_chip_ident	= adv7343_g_chip_ident,
	.g_ctrl		= adv7343_g_ctrl,
	.s_ctrl		= adv7343_s_ctrl,
	.queryctrl	= adv7343_queryctrl,
};

static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
	struct adv7343_state *state = to_state(sd);
	int err = 0;

	if (state->std == std)
		return 0;

	err = adv7343_setstd(sd, std);
	if (!err)
		state->std = std;

	return err;
}

static int adv7343_s_routing(struct v4l2_subdev *sd,
		u32 input, u32 output, u32 config)
{
	struct adv7343_state *state = to_state(sd);
	int err = 0;

	if (state->output == output)
		return 0;

	err = adv7343_setoutput(sd, output);
	if (!err)
		state->output = output;

	return err;
}

static const struct v4l2_subdev_video_ops adv7343_video_ops = {
	.s_std_output	= adv7343_s_std_output,
	.s_routing	= adv7343_s_routing,
};

static const struct v4l2_subdev_ops adv7343_ops = {
	.core	= &adv7343_core_ops,
	.video	= &adv7343_video_ops,
};

static int adv7343_initialize(struct v4l2_subdev *sd)
{
	struct adv7343_state *state = to_state(sd);
	int err = 0;
	int i;

	for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {

		err = adv7343_write(sd, adv7343_init_reg_val[i],
					adv7343_init_reg_val[i+1]);
		if (err) {
			v4l2_err(sd, "Error initializing\n");
			return err;
		}
	}

	/* Configure for default video standard */
	err = adv7343_setoutput(sd, state->output);
	if (err < 0) {
		v4l2_err(sd, "Error setting output during init\n");
		return -EINVAL;
	}

	err = adv7343_setstd(sd, state->std);
	if (err < 0) {
		v4l2_err(sd, "Error setting std during init\n");
		return -EINVAL;
	}

	return err;
}

static int adv7343_probe(struct i2c_client *client,
				const struct i2c_device_id *id)
{
	struct adv7343_state *state;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -ENODEV;

	v4l_info(client, "chip found @ 0x%x (%s)\n",
			client->addr << 1, client->adapter->name);

	state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;

	state->reg00	= 0x80;
	state->reg01	= 0x00;
	state->reg02	= 0x20;
	state->reg35	= 0x00;
	state->reg80	= ADV7343_SD_MODE_REG1_DEFAULT;
	state->reg82	= ADV7343_SD_MODE_REG2_DEFAULT;

	state->output = ADV7343_COMPOSITE_ID;
	state->std = V4L2_STD_NTSC;

	v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
	return adv7343_initialize(&state->sd);
}

static int adv7343_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	v4l2_device_unregister_subdev(sd);
	kfree(to_state(sd));

	return 0;
}

static const struct i2c_device_id adv7343_id[] = {
	{"adv7343", 0},
	{},
};

MODULE_DEVICE_TABLE(i2c, adv7343_id);

static struct i2c_driver adv7343_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= "adv7343",
	},
	.probe		= adv7343_probe,
	.remove		= adv7343_remove,
	.id_table	= adv7343_id,
};

static __init int init_adv7343(void)
{
	return i2c_add_driver(&adv7343_driver);
}

static __exit void exit_adv7343(void)
{
	i2c_del_driver(&adv7343_driver);
}

module_init(init_adv7343);
module_exit(exit_adv7343);