Free Electrons

Embedded Linux Experts

  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
/*
    hexium_gemini.c - v4l2 driver for Hexium Gemini frame grabber cards

    Visit http://www.mihu.de/linux/saa7146/ and follow the link
    to "hexium" for further details about this card.

    Copyright (C) 2003 Michael Hunold <michael@mihu.de>

    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; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define DEBUG_VARIABLE debug

#include <media/drv-intf/saa7146_vv.h>
#include <linux/module.h>

static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "debug verbosity");

/* global variables */
static int hexium_num;

#define HEXIUM_GEMINI			4
#define HEXIUM_GEMINI_DUAL		5

#define HEXIUM_INPUTS	9
static struct v4l2_input hexium_inputs[HEXIUM_INPUTS] = {
	{ 0, "CVBS 1",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 1, "CVBS 2",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 2, "CVBS 3",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 3, "CVBS 4",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 4, "CVBS 5",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 5, "CVBS 6",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 6, "Y/C 1",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 7, "Y/C 2",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
	{ 8, "Y/C 3",	V4L2_INPUT_TYPE_CAMERA,	0, 0, V4L2_STD_ALL, 0, V4L2_IN_CAP_STD },
};

#define HEXIUM_AUDIOS	0

struct hexium_data
{
	s8 adr;
	u8 byte;
};

#define HEXIUM_GEMINI_V_1_0		1
#define HEXIUM_GEMINI_DUAL_V_1_0	2

struct hexium
{
	int type;

	struct video_device	video_dev;
	struct i2c_adapter	i2c_adapter;

	int 		cur_input;	/* current input */
	v4l2_std_id 	cur_std;	/* current standard */
};

/* Samsung KS0127B decoder default registers */
static u8 hexium_ks0127b[0x100]={
/*00*/ 0x00,0x52,0x30,0x40,0x01,0x0C,0x2A,0x10,
/*08*/ 0x00,0x00,0x00,0x60,0x00,0x00,0x0F,0x06,
/*10*/ 0x00,0x00,0xE4,0xC0,0x00,0x00,0x00,0x00,
/*18*/ 0x14,0x9B,0xFE,0xFF,0xFC,0xFF,0x03,0x22,
/*20*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*28*/ 0x00,0x00,0x00,0x00,0x00,0x2C,0x9B,0x00,
/*30*/ 0x00,0x00,0x10,0x80,0x80,0x10,0x80,0x80,
/*38*/ 0x01,0x04,0x00,0x00,0x00,0x29,0xC0,0x00,
/*40*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*48*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*50*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*58*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*60*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*68*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*70*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*78*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*80*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*88*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*90*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*98*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*A0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*A8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*B0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*B8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*C0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*C8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*D0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*D8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*E0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*E8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*F0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*F8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};

static struct hexium_data hexium_pal[] = {
	{ 0x01, 0x52 }, { 0x12, 0x64 }, { 0x2D, 0x2C }, { 0x2E, 0x9B }, { -1 , 0xFF }
};

static struct hexium_data hexium_ntsc[] = {
	{ 0x01, 0x53 }, { 0x12, 0x04 }, { 0x2D, 0x23 }, { 0x2E, 0x81 }, { -1 , 0xFF }
};

static struct hexium_data hexium_secam[] = {
	{ 0x01, 0x52 }, { 0x12, 0x64 }, { 0x2D, 0x2C }, { 0x2E, 0x9B }, { -1 , 0xFF }
};

static struct hexium_data hexium_input_select[] = {
	{ 0x02, 0x60 },
	{ 0x02, 0x64 },
	{ 0x02, 0x61 },
	{ 0x02, 0x65 },
	{ 0x02, 0x62 },
	{ 0x02, 0x66 },
	{ 0x02, 0x68 },
	{ 0x02, 0x69 },
	{ 0x02, 0x6A },
};

/* fixme: h_offset = 0 for Hexium Gemini *Dual*, which
   are currently *not* supported*/
static struct saa7146_standard hexium_standards[] = {
	{
		.name	= "PAL", 	.id	= V4L2_STD_PAL,
		.v_offset	= 28,	.v_field 	= 288,
		.h_offset	= 1,	.h_pixels 	= 680,
		.v_max_out	= 576,	.h_max_out	= 768,
	}, {
		.name	= "NTSC", 	.id	= V4L2_STD_NTSC,
		.v_offset	= 28,	.v_field 	= 240,
		.h_offset	= 1,	.h_pixels 	= 640,
		.v_max_out	= 480,	.h_max_out	= 640,
	}, {
		.name	= "SECAM", 	.id	= V4L2_STD_SECAM,
		.v_offset	= 28,	.v_field 	= 288,
		.h_offset	= 1,	.h_pixels 	= 720,
		.v_max_out	= 576,	.h_max_out	= 768,
	}
};

/* bring hardware to a sane state. this has to be done, just in case someone
   wants to capture from this device before it has been properly initialized.
   the capture engine would badly fail, because no valid signal arrives on the
   saa7146, thus leading to timeouts and stuff. */
static int hexium_init_done(struct saa7146_dev *dev)
{
	struct hexium *hexium = (struct hexium *) dev->ext_priv;
	union i2c_smbus_data data;
	int i = 0;

	DEB_D("hexium_init_done called\n");

	/* initialize the helper ics to useful values */
	for (i = 0; i < sizeof(hexium_ks0127b); i++) {
		data.byte = hexium_ks0127b[i];
		if (0 != i2c_smbus_xfer(&hexium->i2c_adapter, 0x6c, 0, I2C_SMBUS_WRITE, i, I2C_SMBUS_BYTE_DATA, &data)) {
			pr_err("hexium_init_done() failed for address 0x%02x\n",
			       i);
		}
	}

	return 0;
}

static int hexium_set_input(struct hexium *hexium, int input)
{
	union i2c_smbus_data data;

	DEB_D("\n");

	data.byte = hexium_input_select[input].byte;
	if (0 != i2c_smbus_xfer(&hexium->i2c_adapter, 0x6c, 0, I2C_SMBUS_WRITE, hexium_input_select[input].adr, I2C_SMBUS_BYTE_DATA, &data)) {
		return -1;
	}

	return 0;
}

static int hexium_set_standard(struct hexium *hexium, struct hexium_data *vdec)
{
	union i2c_smbus_data data;
	int i = 0;

	DEB_D("\n");

	while (vdec[i].adr != -1) {
		data.byte = vdec[i].byte;
		if (0 != i2c_smbus_xfer(&hexium->i2c_adapter, 0x6c, 0, I2C_SMBUS_WRITE, vdec[i].adr, I2C_SMBUS_BYTE_DATA, &data)) {
			pr_err("hexium_init_done: hexium_set_standard() failed for address 0x%02x\n",
			       i);
			return -1;
		}
		i++;
	}
	return 0;
}

static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
{
	DEB_EE("VIDIOC_ENUMINPUT %d\n", i->index);

	if (i->index >= HEXIUM_INPUTS)
		return -EINVAL;

	memcpy(i, &hexium_inputs[i->index], sizeof(struct v4l2_input));

	DEB_D("v4l2_ioctl: VIDIOC_ENUMINPUT %d\n", i->index);
	return 0;
}

static int vidioc_g_input(struct file *file, void *fh, unsigned int *input)
{
	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
	struct hexium *hexium = (struct hexium *) dev->ext_priv;

	*input = hexium->cur_input;

	DEB_D("VIDIOC_G_INPUT: %d\n", *input);
	return 0;
}

static int vidioc_s_input(struct file *file, void *fh, unsigned int input)
{
	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
	struct hexium *hexium = (struct hexium *) dev->ext_priv;

	DEB_EE("VIDIOC_S_INPUT %d\n", input);

	if (input >= HEXIUM_INPUTS)
		return -EINVAL;

	hexium->cur_input = input;
	hexium_set_input(hexium, input);
	return 0;
}

static struct saa7146_ext_vv vv_data;

/* this function only gets called when the probing was successful */
static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
{
	struct hexium *hexium;
	int ret;

	DEB_EE("\n");

	hexium = kzalloc(sizeof(struct hexium), GFP_KERNEL);
	if (NULL == hexium) {
		pr_err("not enough kernel memory in hexium_attach()\n");
		return -ENOMEM;
	}
	dev->ext_priv = hexium;

	/* enable i2c-port pins */
	saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));

	hexium->i2c_adapter = (struct i2c_adapter) {
		.name = "hexium gemini",
	};
	saa7146_i2c_adapter_prepare(dev, &hexium->i2c_adapter, SAA7146_I2C_BUS_BIT_RATE_480);
	if (i2c_add_adapter(&hexium->i2c_adapter) < 0) {
		DEB_S("cannot register i2c-device. skipping.\n");
		kfree(hexium);
		return -EFAULT;
	}

	/*  set HWControl GPIO number 2 */
	saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);

	saa7146_write(dev, DD1_INIT, 0x07000700);
	saa7146_write(dev, DD1_STREAM_B, 0x00000000);
	saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));

	/* the rest */
	hexium->cur_input = 0;
	hexium_init_done(dev);

	hexium_set_standard(hexium, hexium_pal);
	hexium->cur_std = V4L2_STD_PAL;

	hexium_set_input(hexium, 0);
	hexium->cur_input = 0;

	saa7146_vv_init(dev, &vv_data);

	vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input;
	vv_data.vid_ops.vidioc_g_input = vidioc_g_input;
	vv_data.vid_ops.vidioc_s_input = vidioc_s_input;
	ret = saa7146_register_device(&hexium->video_dev, dev, "hexium gemini", VFL_TYPE_GRABBER);
	if (ret < 0) {
		pr_err("cannot register capture v4l2 device. skipping.\n");
		return ret;
	}

	pr_info("found 'hexium gemini' frame grabber-%d\n", hexium_num);
	hexium_num++;

	return 0;
}

static int hexium_detach(struct saa7146_dev *dev)
{
	struct hexium *hexium = (struct hexium *) dev->ext_priv;

	DEB_EE("dev:%p\n", dev);

	saa7146_unregister_device(&hexium->video_dev, dev);
	saa7146_vv_release(dev);

	hexium_num--;

	i2c_del_adapter(&hexium->i2c_adapter);
	kfree(hexium);
	return 0;
}

static int std_callback(struct saa7146_dev *dev, struct saa7146_standard *std)
{
	struct hexium *hexium = (struct hexium *) dev->ext_priv;

	if (V4L2_STD_PAL == std->id) {
		hexium_set_standard(hexium, hexium_pal);
		hexium->cur_std = V4L2_STD_PAL;
		return 0;
	} else if (V4L2_STD_NTSC == std->id) {
		hexium_set_standard(hexium, hexium_ntsc);
		hexium->cur_std = V4L2_STD_NTSC;
		return 0;
	} else if (V4L2_STD_SECAM == std->id) {
		hexium_set_standard(hexium, hexium_secam);
		hexium->cur_std = V4L2_STD_SECAM;
		return 0;
	}

	return -1;
}

static struct saa7146_extension hexium_extension;

static struct saa7146_pci_extension_data hexium_gemini_4bnc = {
	.ext_priv = "Hexium Gemini (4 BNC)",
	.ext = &hexium_extension,
};

static struct saa7146_pci_extension_data hexium_gemini_dual_4bnc = {
	.ext_priv = "Hexium Gemini Dual (4 BNC)",
	.ext = &hexium_extension,
};

static const struct pci_device_id pci_tbl[] = {
	{
	 .vendor = PCI_VENDOR_ID_PHILIPS,
	 .device = PCI_DEVICE_ID_PHILIPS_SAA7146,
	 .subvendor = 0x17c8,
	 .subdevice = 0x2401,
	 .driver_data = (unsigned long) &hexium_gemini_4bnc,
	 },
	{
	 .vendor = PCI_VENDOR_ID_PHILIPS,
	 .device = PCI_DEVICE_ID_PHILIPS_SAA7146,
	 .subvendor = 0x17c8,
	 .subdevice = 0x2402,
	 .driver_data = (unsigned long) &hexium_gemini_dual_4bnc,
	 },
	{
	 .vendor = 0,
	 }
};

MODULE_DEVICE_TABLE(pci, pci_tbl);

static struct saa7146_ext_vv vv_data = {
	.inputs = HEXIUM_INPUTS,
	.capabilities = 0,
	.stds = &hexium_standards[0],
	.num_stds = sizeof(hexium_standards) / sizeof(struct saa7146_standard),
	.std_callback = &std_callback,
};

static struct saa7146_extension hexium_extension = {
	.name = "hexium gemini",
	.flags = SAA7146_USE_I2C_IRQ,

	.pci_tbl = &pci_tbl[0],
	.module = THIS_MODULE,

	.attach = hexium_attach,
	.detach = hexium_detach,

	.irq_mask = 0,
	.irq_func = NULL,
};

static int __init hexium_init_module(void)
{
	if (0 != saa7146_register_extension(&hexium_extension)) {
		DEB_S("failed to register extension\n");
		return -ENODEV;
	}

	return 0;
}

static void __exit hexium_cleanup_module(void)
{
	saa7146_unregister_extension(&hexium_extension);
}

module_init(hexium_init_module);
module_exit(hexium_cleanup_module);

MODULE_DESCRIPTION("video4linux-2 driver for Hexium Gemini frame grabber cards");
MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
MODULE_LICENSE("GPL");