summaryrefslogtreecommitdiffstats
path: root/drivers/media/usb/dvb-usb/dibusb-common.c
blob: aff60c10cb0b2c9e92c899c8504538a97012d615 (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
// SPDX-License-Identifier: GPL-2.0-only
/* Common methods for dibusb-based-receivers.
 *
 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
 *
 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
 */

#include "dibusb.h"

/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE  64

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);
MODULE_LICENSE("GPL");

#define deb_info(args...) dprintk(debug,0x01,args)

/* common stuff used by the different dibusb modules */
int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	if (adap->priv != NULL) {
		struct dibusb_state *st = adap->priv;
		if (st->ops.fifo_ctrl != NULL)
			if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {
				err("error while controlling the fifo of the demod.");
				return -ENODEV;
			}
	}
	return 0;
}
EXPORT_SYMBOL(dibusb_streaming_ctrl);

int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
{
	if (adap->priv != NULL) {
		struct dibusb_state *st = adap->priv;
		if (st->ops.pid_ctrl != NULL)
			st->ops.pid_ctrl(adap->fe_adap[0].fe,
					 index, pid, onoff);
	}
	return 0;
}
EXPORT_SYMBOL(dibusb_pid_filter);

int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	if (adap->priv != NULL) {
		struct dibusb_state *st = adap->priv;
		if (st->ops.pid_parse != NULL)
			if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)
				err("could not handle pid_parser");
	}
	return 0;
}
EXPORT_SYMBOL(dibusb_pid_filter_ctrl);

int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
{
	u8 *b;
	int ret;

	b = kmalloc(3, GFP_KERNEL);
	if (!b)
		return -ENOMEM;

	b[0] = DIBUSB_REQ_SET_IOCTL;
	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
	b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;

	ret = dvb_usb_generic_write(d, b, 3);

	kfree(b);

	msleep(10);

	return ret;
}
EXPORT_SYMBOL(dibusb_power_ctrl);

int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	int ret;
	u8 *b;

	b = kmalloc(3, GFP_KERNEL);
	if (!b)
		return -ENOMEM;

	if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
		goto ret;

	if (onoff) {
		b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
		b[1] = 0x00;
		ret = dvb_usb_generic_write(adap->dev, b, 2);
		if (ret  < 0)
			goto ret;
	}

	b[0] = DIBUSB_REQ_SET_IOCTL;
	b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
	ret = dvb_usb_generic_write(adap->dev, b, 3);

ret:
	kfree(b);
	return ret;
}
EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);

int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
{
	u8 *b;
	int ret;

	if (!onoff)
		return 0;

	b = kmalloc(3, GFP_KERNEL);
	if (!b)
		return -ENOMEM;

	b[0] = DIBUSB_REQ_SET_IOCTL;
	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
	b[2] = DIBUSB_IOCTL_POWER_WAKEUP;

	ret = dvb_usb_generic_write(d, b, 3);

	kfree(b);

	return ret;
}
EXPORT_SYMBOL(dibusb2_0_power_ctrl);

static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
			  u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
	u8 *sndbuf;
	int ret, wo, len;

	/* write only ? */
	wo = (rbuf == NULL || rlen == 0);

	len = 2 + wlen + (wo ? 0 : 2);

	sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
	if (!sndbuf)
		return -ENOMEM;

	if (4 + wlen > MAX_XFER_SIZE) {
		warn("i2c wr: len=%d is too big!\n", wlen);
		ret = -EOPNOTSUPP;
		goto ret;
	}

	sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
	sndbuf[1] = (addr << 1) | (wo ? 0 : 1);

	memcpy(&sndbuf[2], wbuf, wlen);

	if (!wo) {
		sndbuf[wlen + 2] = (rlen >> 8) & 0xff;
		sndbuf[wlen + 3] = rlen & 0xff;
	}

	ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);

ret:
	kfree(sndbuf);
	return ret;
}

/*
 * I2C master xfer function
 */
static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int i;

	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
		return -EAGAIN;

	for (i = 0; i < num; i++) {
		/* write/read request */
		if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
					  && (msg[i+1].flags & I2C_M_RD)) {
			if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
						msg[i+1].buf,msg[i+1].len) < 0)
				break;
			i++;
		} else if ((msg[i].flags & I2C_M_RD) == 0) {
			if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)
				break;
		} else if (msg[i].addr != 0x50) {
			/* 0x50 is the address of the eeprom - we need to protect it
			 * from dibusb's bad i2c implementation: reads without
			 * writing the offset before are forbidden */
			if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)
				break;
		}
	}

	mutex_unlock(&d->i2c_mutex);
	return i;
}

static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

struct i2c_algorithm dibusb_i2c_algo = {
	.master_xfer   = dibusb_i2c_xfer,
	.functionality = dibusb_i2c_func,
};
EXPORT_SYMBOL(dibusb_i2c_algo);

int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
{
	u8 *buf;
	int rc;

	buf = kzalloc(2, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	buf[0] = offs;

	rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
	*val = buf[1];
	kfree(buf);

	return rc;
}
EXPORT_SYMBOL(dibusb_read_eeprom_byte);

/*
 * common remote control stuff
 */
struct rc_map_table rc_map_dibusb_table[] = {
	/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
	{ 0x0016, KEY_POWER },
	{ 0x0010, KEY_MUTE },
	{ 0x0003, KEY_1 },
	{ 0x0001, KEY_2 },
	{ 0x0006, KEY_3 },
	{ 0x0009, KEY_4 },
	{ 0x001d, KEY_5 },
	{ 0x001f, KEY_6 },
	{ 0x000d, KEY_7 },
	{ 0x0019, KEY_8 },
	{ 0x001b, KEY_9 },
	{ 0x0015, KEY_0 },
	{ 0x0005, KEY_CHANNELUP },
	{ 0x0002, KEY_CHANNELDOWN },
	{ 0x001e, KEY_VOLUMEUP },
	{ 0x000a, KEY_VOLUMEDOWN },
	{ 0x0011, KEY_RECORD },
	{ 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
	{ 0x0014, KEY_PLAY },
	{ 0x001a, KEY_STOP },
	{ 0x0040, KEY_REWIND },
	{ 0x0012, KEY_FASTFORWARD },
	{ 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
	{ 0x004c, KEY_PAUSE },
	{ 0x004d, KEY_SCREEN }, /* Full screen mode. */
	{ 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
	/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
	{ 0x000c, KEY_CANCEL }, /* Cancel */
	{ 0x001c, KEY_EPG }, /* EPG */
	{ 0x0000, KEY_TAB }, /* Tab */
	{ 0x0048, KEY_INFO }, /* Preview */
	{ 0x0004, KEY_LIST }, /* RecordList */
	{ 0x000f, KEY_TEXT }, /* Teletext */
	/* Key codes for the KWorld/ADSTech/JetWay remote. */
	{ 0x8612, KEY_POWER },
	{ 0x860f, KEY_SELECT }, /* source */
	{ 0x860c, KEY_UNKNOWN }, /* scan */
	{ 0x860b, KEY_EPG },
	{ 0x8610, KEY_MUTE },
	{ 0x8601, KEY_1 },
	{ 0x8602, KEY_2 },
	{ 0x8603, KEY_3 },
	{ 0x8604, KEY_4 },
	{ 0x8605, KEY_5 },
	{ 0x8606, KEY_6 },
	{ 0x8607, KEY_7 },
	{ 0x8608, KEY_8 },
	{ 0x8609, KEY_9 },
	{ 0x860a, KEY_0 },
	{ 0x8618, KEY_ZOOM },
	{ 0x861c, KEY_UNKNOWN }, /* preview */
	{ 0x8613, KEY_UNKNOWN }, /* snap */
	{ 0x8600, KEY_UNDO },
	{ 0x861d, KEY_RECORD },
	{ 0x860d, KEY_STOP },
	{ 0x860e, KEY_PAUSE },
	{ 0x8616, KEY_PLAY },
	{ 0x8611, KEY_BACK },
	{ 0x8619, KEY_FORWARD },
	{ 0x8614, KEY_UNKNOWN }, /* pip */
	{ 0x8615, KEY_ESC },
	{ 0x861a, KEY_UP },
	{ 0x861e, KEY_DOWN },
	{ 0x861f, KEY_LEFT },
	{ 0x861b, KEY_RIGHT },

	/* Key codes for the DiBcom MOD3000 remote. */
	{ 0x8000, KEY_MUTE },
	{ 0x8001, KEY_TEXT },
	{ 0x8002, KEY_HOME },
	{ 0x8003, KEY_POWER },

	{ 0x8004, KEY_RED },
	{ 0x8005, KEY_GREEN },
	{ 0x8006, KEY_YELLOW },
	{ 0x8007, KEY_BLUE },

	{ 0x8008, KEY_DVD },
	{ 0x8009, KEY_AUDIO },
	{ 0x800a, KEY_IMAGES },      /* Pictures */
	{ 0x800b, KEY_VIDEO },

	{ 0x800c, KEY_BACK },
	{ 0x800d, KEY_UP },
	{ 0x800e, KEY_RADIO },
	{ 0x800f, KEY_EPG },

	{ 0x8010, KEY_LEFT },
	{ 0x8011, KEY_OK },
	{ 0x8012, KEY_RIGHT },
	{ 0x8013, KEY_UNKNOWN },    /* SAP */

	{ 0x8014, KEY_TV },
	{ 0x8015, KEY_DOWN },
	{ 0x8016, KEY_MENU },       /* DVD Menu */
	{ 0x8017, KEY_LAST },

	{ 0x8018, KEY_RECORD },
	{ 0x8019, KEY_STOP },
	{ 0x801a, KEY_PAUSE },
	{ 0x801b, KEY_PLAY },

	{ 0x801c, KEY_PREVIOUS },
	{ 0x801d, KEY_REWIND },
	{ 0x801e, KEY_FASTFORWARD },
	{ 0x801f, KEY_NEXT},

	{ 0x8040, KEY_1 },
	{ 0x8041, KEY_2 },
	{ 0x8042, KEY_3 },
	{ 0x8043, KEY_CHANNELUP },

	{ 0x8044, KEY_4 },
	{ 0x8045, KEY_5 },
	{ 0x8046, KEY_6 },
	{ 0x8047, KEY_CHANNELDOWN },

	{ 0x8048, KEY_7 },
	{ 0x8049, KEY_8 },
	{ 0x804a, KEY_9 },
	{ 0x804b, KEY_VOLUMEUP },

	{ 0x804c, KEY_CLEAR },
	{ 0x804d, KEY_0 },
	{ 0x804e, KEY_ENTER },
	{ 0x804f, KEY_VOLUMEDOWN },
};
EXPORT_SYMBOL(rc_map_dibusb_table);

int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
	u8 *buf;
	int ret;

	buf = kmalloc(5, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	buf[0] = DIBUSB_REQ_POLL_REMOTE;

	ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
	if (ret < 0)
		goto ret;

	dvb_usb_nec_rc_key_to_event(d, buf, event, state);

	if (buf[0] != 0)
		deb_info("key: %*ph\n", 5, buf);

ret:
	kfree(buf);

	return ret;
}
EXPORT_SYMBOL(dibusb_rc_query);