1 /* Common methods for dibusb-based-receivers.
2  *
3  * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
4  *
5  *	This program is free software; you can redistribute it and/or modify it
6  *	under the terms of the GNU General Public License as published by the Free
7  *	Software Foundation, version 2.
8  *
9  * see Documentation/media/dvb-drivers/dvb-usb.rst for more information
10  */
11 
12 #include "dibusb.h"
13 
14 /* Max transfer size done by I2C transfer functions */
15 #define MAX_XFER_SIZE  64
16 
17 static int debug;
18 module_param(debug, int, 0644);
19 MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);
20 MODULE_LICENSE("GPL");
21 
22 #define deb_info(args...) dprintk(debug,0x01,args)
23 
24 /* common stuff used by the different dibusb modules */
25 int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
26 {
27 	if (adap->priv != NULL) {
28 		struct dibusb_state *st = adap->priv;
29 		if (st->ops.fifo_ctrl != NULL)
30 			if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {
31 				err("error while controlling the fifo of the demod.");
32 				return -ENODEV;
33 			}
34 	}
35 	return 0;
36 }
37 EXPORT_SYMBOL(dibusb_streaming_ctrl);
38 
39 int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
40 {
41 	if (adap->priv != NULL) {
42 		struct dibusb_state *st = adap->priv;
43 		if (st->ops.pid_ctrl != NULL)
44 			st->ops.pid_ctrl(adap->fe_adap[0].fe,
45 					 index, pid, onoff);
46 	}
47 	return 0;
48 }
49 EXPORT_SYMBOL(dibusb_pid_filter);
50 
51 int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
52 {
53 	if (adap->priv != NULL) {
54 		struct dibusb_state *st = adap->priv;
55 		if (st->ops.pid_parse != NULL)
56 			if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)
57 				err("could not handle pid_parser");
58 	}
59 	return 0;
60 }
61 EXPORT_SYMBOL(dibusb_pid_filter_ctrl);
62 
63 int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
64 {
65 	u8 *b;
66 	int ret;
67 
68 	b = kmalloc(3, GFP_KERNEL);
69 	if (!b)
70 		return -ENOMEM;
71 
72 	b[0] = DIBUSB_REQ_SET_IOCTL;
73 	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
74 	b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;
75 
76 	ret = dvb_usb_generic_write(d, b, 3);
77 
78 	kfree(b);
79 
80 	msleep(10);
81 
82 	return ret;
83 }
84 EXPORT_SYMBOL(dibusb_power_ctrl);
85 
86 int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
87 {
88 	int ret;
89 	u8 *b;
90 
91 	b = kmalloc(3, GFP_KERNEL);
92 	if (!b)
93 		return -ENOMEM;
94 
95 	if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
96 		goto ret;
97 
98 	if (onoff) {
99 		b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
100 		b[1] = 0x00;
101 		ret = dvb_usb_generic_write(adap->dev, b, 2);
102 		if (ret  < 0)
103 			goto ret;
104 	}
105 
106 	b[0] = DIBUSB_REQ_SET_IOCTL;
107 	b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
108 	ret = dvb_usb_generic_write(adap->dev, b, 3);
109 
110 ret:
111 	kfree(b);
112 	return ret;
113 }
114 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);
115 
116 int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
117 {
118 	u8 *b;
119 	int ret;
120 
121 	if (!onoff)
122 		return 0;
123 
124 	b = kmalloc(3, GFP_KERNEL);
125 	if (!b)
126 		return -ENOMEM;
127 
128 	b[0] = DIBUSB_REQ_SET_IOCTL;
129 	b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
130 	b[2] = DIBUSB_IOCTL_POWER_WAKEUP;
131 
132 	ret = dvb_usb_generic_write(d, b, 3);
133 
134 	kfree(b);
135 
136 	return ret;
137 }
138 EXPORT_SYMBOL(dibusb2_0_power_ctrl);
139 
140 static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
141 			  u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
142 {
143 	u8 *sndbuf;
144 	int ret, wo, len;
145 
146 	/* write only ? */
147 	wo = (rbuf == NULL || rlen == 0);
148 
149 	len = 2 + wlen + (wo ? 0 : 2);
150 
151 	sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
152 	if (!sndbuf)
153 		return -ENOMEM;
154 
155 	if (4 + wlen > MAX_XFER_SIZE) {
156 		warn("i2c wr: len=%d is too big!\n", wlen);
157 		ret = -EOPNOTSUPP;
158 		goto ret;
159 	}
160 
161 	sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
162 	sndbuf[1] = (addr << 1) | (wo ? 0 : 1);
163 
164 	memcpy(&sndbuf[2], wbuf, wlen);
165 
166 	if (!wo) {
167 		sndbuf[wlen + 2] = (rlen >> 8) & 0xff;
168 		sndbuf[wlen + 3] = rlen & 0xff;
169 	}
170 
171 	ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);
172 
173 ret:
174 	kfree(sndbuf);
175 	return ret;
176 }
177 
178 /*
179  * I2C master xfer function
180  */
181 static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
182 {
183 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
184 	int i;
185 
186 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
187 		return -EAGAIN;
188 
189 	for (i = 0; i < num; i++) {
190 		/* write/read request */
191 		if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
192 					  && (msg[i+1].flags & I2C_M_RD)) {
193 			if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
194 						msg[i+1].buf,msg[i+1].len) < 0)
195 				break;
196 			i++;
197 		} else if ((msg[i].flags & I2C_M_RD) == 0) {
198 			if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)
199 				break;
200 		} else if (msg[i].addr != 0x50) {
201 			/* 0x50 is the address of the eeprom - we need to protect it
202 			 * from dibusb's bad i2c implementation: reads without
203 			 * writing the offset before are forbidden */
204 			if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)
205 				break;
206 		}
207 	}
208 
209 	mutex_unlock(&d->i2c_mutex);
210 	return i;
211 }
212 
213 static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
214 {
215 	return I2C_FUNC_I2C;
216 }
217 
218 struct i2c_algorithm dibusb_i2c_algo = {
219 	.master_xfer   = dibusb_i2c_xfer,
220 	.functionality = dibusb_i2c_func,
221 };
222 EXPORT_SYMBOL(dibusb_i2c_algo);
223 
224 int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
225 {
226 	u8 *buf;
227 	int rc;
228 
229 	buf = kmalloc(2, GFP_KERNEL);
230 	if (!buf)
231 		return -ENOMEM;
232 
233 	buf[0] = offs;
234 
235 	rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
236 	*val = buf[1];
237 	kfree(buf);
238 
239 	return rc;
240 }
241 EXPORT_SYMBOL(dibusb_read_eeprom_byte);
242 
243 /*
244  * common remote control stuff
245  */
246 struct rc_map_table rc_map_dibusb_table[] = {
247 	/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
248 	{ 0x0016, KEY_POWER },
249 	{ 0x0010, KEY_MUTE },
250 	{ 0x0003, KEY_1 },
251 	{ 0x0001, KEY_2 },
252 	{ 0x0006, KEY_3 },
253 	{ 0x0009, KEY_4 },
254 	{ 0x001d, KEY_5 },
255 	{ 0x001f, KEY_6 },
256 	{ 0x000d, KEY_7 },
257 	{ 0x0019, KEY_8 },
258 	{ 0x001b, KEY_9 },
259 	{ 0x0015, KEY_0 },
260 	{ 0x0005, KEY_CHANNELUP },
261 	{ 0x0002, KEY_CHANNELDOWN },
262 	{ 0x001e, KEY_VOLUMEUP },
263 	{ 0x000a, KEY_VOLUMEDOWN },
264 	{ 0x0011, KEY_RECORD },
265 	{ 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
266 	{ 0x0014, KEY_PLAY },
267 	{ 0x001a, KEY_STOP },
268 	{ 0x0040, KEY_REWIND },
269 	{ 0x0012, KEY_FASTFORWARD },
270 	{ 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
271 	{ 0x004c, KEY_PAUSE },
272 	{ 0x004d, KEY_SCREEN }, /* Full screen mode. */
273 	{ 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
274 	/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
275 	{ 0x000c, KEY_CANCEL }, /* Cancel */
276 	{ 0x001c, KEY_EPG }, /* EPG */
277 	{ 0x0000, KEY_TAB }, /* Tab */
278 	{ 0x0048, KEY_INFO }, /* Preview */
279 	{ 0x0004, KEY_LIST }, /* RecordList */
280 	{ 0x000f, KEY_TEXT }, /* Teletext */
281 	/* Key codes for the KWorld/ADSTech/JetWay remote. */
282 	{ 0x8612, KEY_POWER },
283 	{ 0x860f, KEY_SELECT }, /* source */
284 	{ 0x860c, KEY_UNKNOWN }, /* scan */
285 	{ 0x860b, KEY_EPG },
286 	{ 0x8610, KEY_MUTE },
287 	{ 0x8601, KEY_1 },
288 	{ 0x8602, KEY_2 },
289 	{ 0x8603, KEY_3 },
290 	{ 0x8604, KEY_4 },
291 	{ 0x8605, KEY_5 },
292 	{ 0x8606, KEY_6 },
293 	{ 0x8607, KEY_7 },
294 	{ 0x8608, KEY_8 },
295 	{ 0x8609, KEY_9 },
296 	{ 0x860a, KEY_0 },
297 	{ 0x8618, KEY_ZOOM },
298 	{ 0x861c, KEY_UNKNOWN }, /* preview */
299 	{ 0x8613, KEY_UNKNOWN }, /* snap */
300 	{ 0x8600, KEY_UNDO },
301 	{ 0x861d, KEY_RECORD },
302 	{ 0x860d, KEY_STOP },
303 	{ 0x860e, KEY_PAUSE },
304 	{ 0x8616, KEY_PLAY },
305 	{ 0x8611, KEY_BACK },
306 	{ 0x8619, KEY_FORWARD },
307 	{ 0x8614, KEY_UNKNOWN }, /* pip */
308 	{ 0x8615, KEY_ESC },
309 	{ 0x861a, KEY_UP },
310 	{ 0x861e, KEY_DOWN },
311 	{ 0x861f, KEY_LEFT },
312 	{ 0x861b, KEY_RIGHT },
313 
314 	/* Key codes for the DiBcom MOD3000 remote. */
315 	{ 0x8000, KEY_MUTE },
316 	{ 0x8001, KEY_TEXT },
317 	{ 0x8002, KEY_HOME },
318 	{ 0x8003, KEY_POWER },
319 
320 	{ 0x8004, KEY_RED },
321 	{ 0x8005, KEY_GREEN },
322 	{ 0x8006, KEY_YELLOW },
323 	{ 0x8007, KEY_BLUE },
324 
325 	{ 0x8008, KEY_DVD },
326 	{ 0x8009, KEY_AUDIO },
327 	{ 0x800a, KEY_IMAGES },      /* Pictures */
328 	{ 0x800b, KEY_VIDEO },
329 
330 	{ 0x800c, KEY_BACK },
331 	{ 0x800d, KEY_UP },
332 	{ 0x800e, KEY_RADIO },
333 	{ 0x800f, KEY_EPG },
334 
335 	{ 0x8010, KEY_LEFT },
336 	{ 0x8011, KEY_OK },
337 	{ 0x8012, KEY_RIGHT },
338 	{ 0x8013, KEY_UNKNOWN },    /* SAP */
339 
340 	{ 0x8014, KEY_TV },
341 	{ 0x8015, KEY_DOWN },
342 	{ 0x8016, KEY_MENU },       /* DVD Menu */
343 	{ 0x8017, KEY_LAST },
344 
345 	{ 0x8018, KEY_RECORD },
346 	{ 0x8019, KEY_STOP },
347 	{ 0x801a, KEY_PAUSE },
348 	{ 0x801b, KEY_PLAY },
349 
350 	{ 0x801c, KEY_PREVIOUS },
351 	{ 0x801d, KEY_REWIND },
352 	{ 0x801e, KEY_FASTFORWARD },
353 	{ 0x801f, KEY_NEXT},
354 
355 	{ 0x8040, KEY_1 },
356 	{ 0x8041, KEY_2 },
357 	{ 0x8042, KEY_3 },
358 	{ 0x8043, KEY_CHANNELUP },
359 
360 	{ 0x8044, KEY_4 },
361 	{ 0x8045, KEY_5 },
362 	{ 0x8046, KEY_6 },
363 	{ 0x8047, KEY_CHANNELDOWN },
364 
365 	{ 0x8048, KEY_7 },
366 	{ 0x8049, KEY_8 },
367 	{ 0x804a, KEY_9 },
368 	{ 0x804b, KEY_VOLUMEUP },
369 
370 	{ 0x804c, KEY_CLEAR },
371 	{ 0x804d, KEY_0 },
372 	{ 0x804e, KEY_ENTER },
373 	{ 0x804f, KEY_VOLUMEDOWN },
374 };
375 EXPORT_SYMBOL(rc_map_dibusb_table);
376 
377 int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
378 {
379 	u8 *buf;
380 	int ret;
381 
382 	buf = kmalloc(5, GFP_KERNEL);
383 	if (!buf)
384 		return -ENOMEM;
385 
386 	buf[0] = DIBUSB_REQ_POLL_REMOTE;
387 
388 	ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
389 	if (ret < 0)
390 		goto ret;
391 
392 	dvb_usb_nec_rc_key_to_event(d, buf, event, state);
393 
394 	if (buf[0] != 0)
395 		deb_info("key: %*ph\n", 5, buf);
396 
397 ret:
398 	kfree(buf);
399 
400 	return ret;
401 }
402 EXPORT_SYMBOL(dibusb_rc_query);
403