aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/dpc7146.c
blob: 9ceb6b2f394920af86ff64bc7be36f3a080c3cfb (plain) (blame)
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
/*
    dpc7146.c - v4l2 driver for the dpc7146 demonstration board

    Copyright (C) 2000-2003 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 DEBUG_VARIABLE debug

#include <media/saa7146_vv.h>
#include <linux/video_decoder.h>	/* for saa7111a */

#define I2C_SAA7111A            0x24

/* All unused bytes are reserverd. */
#define SAA711X_CHIP_VERSION            0x00
#define SAA711X_ANALOG_INPUT_CONTROL_1  0x02
#define SAA711X_ANALOG_INPUT_CONTROL_2  0x03
#define SAA711X_ANALOG_INPUT_CONTROL_3  0x04
#define SAA711X_ANALOG_INPUT_CONTROL_4  0x05
#define SAA711X_HORIZONTAL_SYNC_START   0x06
#define SAA711X_HORIZONTAL_SYNC_STOP    0x07
#define SAA711X_SYNC_CONTROL            0x08
#define SAA711X_LUMINANCE_CONTROL       0x09
#define SAA711X_LUMINANCE_BRIGHTNESS    0x0A
#define SAA711X_LUMINANCE_CONTRAST      0x0B
#define SAA711X_CHROMA_SATURATION       0x0C
#define SAA711X_CHROMA_HUE_CONTROL      0x0D
#define SAA711X_CHROMA_CONTROL          0x0E
#define SAA711X_FORMAT_DELAY_CONTROL    0x10
#define SAA711X_OUTPUT_CONTROL_1        0x11
#define SAA711X_OUTPUT_CONTROL_2        0x12
#define SAA711X_OUTPUT_CONTROL_3        0x13
#define SAA711X_V_GATE_1_START          0x15
#define SAA711X_V_GATE_1_STOP           0x16
#define SAA711X_V_GATE_1_MSB            0x17
#define SAA711X_TEXT_SLICER_STATUS      0x1A
#define SAA711X_DECODED_BYTES_OF_TS_1   0x1B
#define SAA711X_DECODED_BYTES_OF_TS_2   0x1C
#define SAA711X_STATUS_BYTE             0x1F

#define DPC_BOARD_CAN_DO_VBI(dev)   (dev->revision != 0)

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

static int dpc_num = 0;

#define DPC_INPUTS	2
static struct v4l2_input dpc_inputs[DPC_INPUTS] = {
	{ 0, "Port A",	V4L2_INPUT_TYPE_CAMERA,	2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
	{ 1, "Port B",	V4L2_INPUT_TYPE_CAMERA,	2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
};

#define DPC_AUDIOS	0

static struct saa7146_extension_ioctls ioctls[] = {
	{ VIDIOC_G_INPUT,	SAA7146_EXCLUSIVE },
	{ VIDIOC_S_INPUT,	SAA7146_EXCLUSIVE },
	{ VIDIOC_ENUMINPUT, 	SAA7146_EXCLUSIVE },
	{ VIDIOC_S_STD,		SAA7146_AFTER },
	{ 0,			0 }
};

struct dpc
{
	struct video_device	*video_dev;
	struct video_device	*vbi_dev;

	struct i2c_adapter	i2c_adapter;
	struct i2c_client	*saa7111a;

	int cur_input;	/* current input */
};

static int dpc_check_clients(struct device *dev, void *data)
{
	struct dpc* dpc = data;
	struct i2c_client *client = i2c_verify_client(dev);

	if( !client )
		return 0;

	if( I2C_SAA7111A == client->addr )
		dpc->saa7111a = client;

	return 0;
}

/* fixme: add vbi stuff here */
static int dpc_probe(struct saa7146_dev* dev)
{
	struct dpc* dpc = NULL;

	dpc = kzalloc(sizeof(struct dpc), GFP_KERNEL);
	if( NULL == dpc ) {
		printk("dpc_v4l2.o: dpc_probe: not enough kernel memory.\n");
		return -ENOMEM;
	}

	/* FIXME: enable i2c-port pins, video-port-pins
	   video port pins should be enabled here ?! */
	saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));

	dpc->i2c_adapter = (struct i2c_adapter) {
		.class = I2C_CLASS_TV_ANALOG,
		.name = "dpc7146",
	};
	saa7146_i2c_adapter_prepare(dev, &dpc->i2c_adapter, SAA7146_I2C_BUS_BIT_RATE_480);
	if(i2c_add_adapter(&dpc->i2c_adapter) < 0) {
		DEB_S(("cannot register i2c-device. skipping.\n"));
		kfree(dpc);
		return -EFAULT;
	}

	/* loop through all i2c-devices on the bus and look who is there */
	device_for_each_child(&dpc->i2c_adapter.dev, dpc, dpc_check_clients);

	/* check if all devices are present */
	if (!dpc->saa7111a) {
		DEB_D(("dpc_v4l2.o: dpc_attach failed for this device.\n"));
		i2c_del_adapter(&dpc->i2c_adapter);
		kfree(dpc);
		return -ENODEV;
	}

	/* all devices are present, probe was successful */
	DEB_D(("dpc_v4l2.o: dpc_probe succeeded for this device.\n"));

	/* we store the pointer in our private data field */
	dev->ext_priv = dpc;

	return 0;
}

/* 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 dpc_init_done(struct saa7146_dev* dev)
{
	struct dpc* dpc = (struct dpc*)dev->ext_priv;

	DEB_D(("dpc_v4l2.o: dpc_init_done called.\n"));

	/* initialize the helper ics to useful values */
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x00, 0x11);

	i2c_smbus_write_byte_data(dpc->saa7111a, 0x02, 0xc0);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x03, 0x30);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x04, 0x00);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x05, 0x00);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x06, 0xde);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x07, 0xad);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x08, 0xa8);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x09, 0x00);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x0a, 0x80);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x0b, 0x47);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x0c, 0x40);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x0d, 0x00);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x0e, 0x03);

	i2c_smbus_write_byte_data(dpc->saa7111a, 0x10, 0xd0);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x11, 0x1c);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x12, 0xc1);
	i2c_smbus_write_byte_data(dpc->saa7111a, 0x13, 0x30);

	i2c_smbus_write_byte_data(dpc->saa7111a, 0x1f, 0x81);

	return 0;
}

static struct saa7146_ext_vv vv_data;

/* this function only gets called when the probing was successful */
static int dpc_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data *info)
{
	struct dpc* dpc = (struct dpc*)dev->ext_priv;

	DEB_D(("dpc_v4l2.o: dpc_attach called.\n"));

	/* checking for i2c-devices can be omitted here, because we
	   already did this in "dpc_vl42_probe" */

	saa7146_vv_init(dev,&vv_data);
	if( 0 != saa7146_register_device(&dpc->video_dev, dev, "dpc", VFL_TYPE_GRABBER)) {
		ERR(("cannot register capture v4l2 device. skipping.\n"));
		return -1;
	}

	/* initialization stuff (vbi) (only for revision > 0 and for extensions which want it)*/
	if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
		if( 0 != saa7146_register_device(&dpc->vbi_dev, dev, "dpc", VFL_TYPE_VBI)) {
			ERR(("cannot register vbi v4l2 device. skipping.\n"));
		}
	}

	i2c_use_client(dpc->saa7111a);

	printk("dpc: found 'dpc7146 demonstration board'-%d.\n",dpc_num);
	dpc_num++;

	/* the rest */
	dpc->cur_input = 0;
	dpc_init_done(dev);

	return 0;
}

static int dpc_detach(struct saa7146_dev* dev)
{
	struct dpc* dpc = (struct dpc*)dev->ext_priv;

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

	i2c_release_client(dpc->saa7111a);

	saa7146_unregister_device(&dpc->video_dev,dev);
	if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
		saa7146_unregister_device(&dpc->vbi_dev,dev);
	}
	saa7146_vv_release(dev);

	dpc_num--;

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

#ifdef axa
int dpc_vbi_bypass(struct saa7146_dev* dev)
{
	struct dpc* dpc = (struct dpc*)dev->ext_priv;

	int i = 1;

	/* switch bypass in saa7111a */
	if ( 0 != dpc->saa7111a->driver->command(dpc->saa7111a,SAA711X_VBI_BYPASS, &i)) {
		printk("dpc_v4l2.o: VBI_BYPASS: could not address saa7111a.\n");
		return -1;
	}

	return 0;
}
#endif

static int dpc_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
{
	struct saa7146_dev *dev = fh->dev;
	struct dpc* dpc = (struct dpc*)dev->ext_priv;
/*
	struct saa7146_vv *vv = dev->vv_data;
*/
	switch(cmd)
	{
	case VIDIOC_ENUMINPUT:
	{
		struct v4l2_input *i = arg;
		DEB_EE(("VIDIOC_ENUMINPUT %d.\n",i->index));

		if( i->index < 0 || i->index >= DPC_INPUTS) {
			return -EINVAL;
		}

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

		DEB_D(("dpc_v4l2.o: v4l2_ioctl: VIDIOC_ENUMINPUT %d.\n",i->index));
		return 0;
	}
	case VIDIOC_G_INPUT:
	{
		int *input = (int *)arg;
		*input = dpc->cur_input;

		DEB_D(("dpc_v4l2.o: VIDIOC_G_INPUT: %d\n",*input));
		return 0;
	}
	case VIDIOC_S_INPUT:
	{
		int	input = *(int *)arg;

		if (input < 0 || input >= DPC_INPUTS) {
			return -EINVAL;
		}

		dpc->cur_input = input;

		/* fixme: switch input here, switch audio, too! */
//		saa7146_set_hps_source_and_sync(dev, input_port_selection[input].hps_source, input_port_selection[input].hps_sync);
		printk("dpc_v4l2.o: VIDIOC_S_INPUT: fixme switch input.\n");

		return 0;
	}
	default:
/*
		DEB_D(("dpc_v4l2.o: v4l2_ioctl does not handle this ioctl.\n"));
*/
		return -ENOIOCTLCMD;
	}
	return 0;
}

static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
{
	return 0;
}

static struct saa7146_standard standard[] = {
	{
		.name	= "PAL", 	.id	= V4L2_STD_PAL,
		.v_offset	= 0x17,	.v_field 	= 288,
		.h_offset	= 0x14,	.h_pixels 	= 680,
		.v_max_out	= 576,	.h_max_out	= 768,
	}, {
		.name	= "NTSC", 	.id	= V4L2_STD_NTSC,
		.v_offset	= 0x16,	.v_field 	= 240,
		.h_offset	= 0x06,	.h_pixels 	= 708,
		.v_max_out	= 480,	.h_max_out	= 640,
	}, {
		.name	= "SECAM", 	.id	= V4L2_STD_SECAM,
		.v_offset	= 0x14,	.v_field 	= 288,
		.h_offset	= 0x14,	.h_pixels 	= 720,
		.v_max_out	= 576,	.h_max_out	= 768,
	}
};

static struct saa7146_extension extension;

static struct saa7146_pci_extension_data dpc = {
	.ext_priv = "Multimedia eXtension Board",
	.ext = &extension,
};

static struct pci_device_id pci_tbl[] = {
	{
		.vendor    = PCI_VENDOR_ID_PHILIPS,
		.device	   = PCI_DEVICE_ID_PHILIPS_SAA7146,
		.subvendor = 0x0000,
		.subdevice = 0x0000,
		.driver_data = (unsigned long)&dpc,
	}, {
		.vendor = 0,
	}
};

MODULE_DEVICE_TABLE(pci, pci_tbl);

static struct saa7146_ext_vv vv_data = {
	.inputs		= DPC_INPUTS,
	.capabilities	= V4L2_CAP_VBI_CAPTURE,
	.stds		= &standard[0],
	.num_stds	= sizeof(standard)/sizeof(struct saa7146_standard),
	.std_callback	= &std_callback,
	.ioctls		= &ioctls[0],
	.ioctl		= dpc_ioctl,
};

static struct saa7146_extension extension = {
	.name		= "dpc7146 demonstration board",
	.flags		= SAA7146_USE_I2C_IRQ,

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

	.probe		= dpc_probe,
	.attach		= dpc_attach,
	.detach		= dpc_detach,

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

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

	return 0;
}

static void __exit dpc_cleanup_module(void)
{
	saa7146_unregister_extension(&extension);
}

module_init(dpc_init_module);
module_exit(dpc_cleanup_module);

MODULE_DESCRIPTION("video4linux-2 driver for the 'dpc7146 demonstration board'");
MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
MODULE_LICENSE("GPL");