1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Common methods for dibusb-based-receivers.
3 *
4 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
5 *
6 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
7 */
8
9 #include "dibusb.h"
10
11 /* Max transfer size done by I2C transfer functions */
12 #define MAX_XFER_SIZE 64
13
14 static int debug;
15 module_param(debug, int, 0644);
16 MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);
17 MODULE_LICENSE("GPL");
18
19 #define deb_info(args...) dprintk(debug,0x01,args)
20
21 /* common stuff used by the different dibusb modules */
dibusb_streaming_ctrl(struct dvb_usb_adapter * adap,int onoff)22 int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
23 {
24 if (adap->priv != NULL) {
25 struct dibusb_state *st = adap->priv;
26 if (st->ops.fifo_ctrl != NULL)
27 if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {
28 err("error while controlling the fifo of the demod.");
29 return -ENODEV;
30 }
31 }
32 return 0;
33 }
34 EXPORT_SYMBOL(dibusb_streaming_ctrl);
35
dibusb_pid_filter(struct dvb_usb_adapter * adap,int index,u16 pid,int onoff)36 int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
37 {
38 if (adap->priv != NULL) {
39 struct dibusb_state *st = adap->priv;
40 if (st->ops.pid_ctrl != NULL)
41 st->ops.pid_ctrl(adap->fe_adap[0].fe,
42 index, pid, onoff);
43 }
44 return 0;
45 }
46 EXPORT_SYMBOL(dibusb_pid_filter);
47
dibusb_pid_filter_ctrl(struct dvb_usb_adapter * adap,int onoff)48 int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
49 {
50 if (adap->priv != NULL) {
51 struct dibusb_state *st = adap->priv;
52 if (st->ops.pid_parse != NULL)
53 if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)
54 err("could not handle pid_parser");
55 }
56 return 0;
57 }
58 EXPORT_SYMBOL(dibusb_pid_filter_ctrl);
59
dibusb_power_ctrl(struct dvb_usb_device * d,int onoff)60 int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
61 {
62 u8 *b;
63 int ret;
64
65 b = kmalloc(3, GFP_KERNEL);
66 if (!b)
67 return -ENOMEM;
68
69 b[0] = DIBUSB_REQ_SET_IOCTL;
70 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
71 b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;
72
73 ret = dvb_usb_generic_write(d, b, 3);
74
75 kfree(b);
76
77 msleep(10);
78
79 return ret;
80 }
81 EXPORT_SYMBOL(dibusb_power_ctrl);
82
dibusb2_0_streaming_ctrl(struct dvb_usb_adapter * adap,int onoff)83 int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
84 {
85 int ret;
86 u8 *b;
87
88 b = kmalloc(3, GFP_KERNEL);
89 if (!b)
90 return -ENOMEM;
91
92 if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
93 goto ret;
94
95 if (onoff) {
96 b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
97 b[1] = 0x00;
98 ret = dvb_usb_generic_write(adap->dev, b, 2);
99 if (ret < 0)
100 goto ret;
101 }
102
103 b[0] = DIBUSB_REQ_SET_IOCTL;
104 b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
105 ret = dvb_usb_generic_write(adap->dev, b, 3);
106
107 ret:
108 kfree(b);
109 return ret;
110 }
111 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);
112
dibusb2_0_power_ctrl(struct dvb_usb_device * d,int onoff)113 int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
114 {
115 u8 *b;
116 int ret;
117
118 if (!onoff)
119 return 0;
120
121 b = kmalloc(3, GFP_KERNEL);
122 if (!b)
123 return -ENOMEM;
124
125 b[0] = DIBUSB_REQ_SET_IOCTL;
126 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
127 b[2] = DIBUSB_IOCTL_POWER_WAKEUP;
128
129 ret = dvb_usb_generic_write(d, b, 3);
130
131 kfree(b);
132
133 return ret;
134 }
135 EXPORT_SYMBOL(dibusb2_0_power_ctrl);
136
dibusb_i2c_msg(struct dvb_usb_device * d,u8 addr,u8 * wbuf,u16 wlen,u8 * rbuf,u16 rlen)137 static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
138 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
139 {
140 u8 *sndbuf;
141 int ret, wo, len;
142
143 /* write only ? */
144 wo = (rbuf == NULL || rlen == 0);
145
146 len = 2 + wlen + (wo ? 0 : 2);
147
148 sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
149 if (!sndbuf)
150 return -ENOMEM;
151
152 if (4 + wlen > MAX_XFER_SIZE) {
153 warn("i2c wr: len=%d is too big!\n", wlen);
154 ret = -EOPNOTSUPP;
155 goto ret;
156 }
157
158 sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
159 sndbuf[1] = (addr << 1) | (wo ? 0 : 1);
160
161 memcpy(&sndbuf[2], wbuf, wlen);
162
163 if (!wo) {
164 sndbuf[wlen + 2] = (rlen >> 8) & 0xff;
165 sndbuf[wlen + 3] = rlen & 0xff;
166 }
167
168 ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);
169
170 ret:
171 kfree(sndbuf);
172 return ret;
173 }
174
175 /*
176 * I2C master xfer function
177 */
dibusb_i2c_xfer(struct i2c_adapter * adap,struct i2c_msg msg[],int num)178 static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
179 {
180 struct dvb_usb_device *d = i2c_get_adapdata(adap);
181 int i;
182
183 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
184 return -EAGAIN;
185
186 for (i = 0; i < num; i++) {
187 /* write/read request */
188 if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
189 && (msg[i+1].flags & I2C_M_RD)) {
190 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
191 msg[i+1].buf,msg[i+1].len) < 0)
192 break;
193 i++;
194 } else if ((msg[i].flags & I2C_M_RD) == 0) {
195 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)
196 break;
197 } else if (msg[i].addr != 0x50) {
198 /* 0x50 is the address of the eeprom - we need to protect it
199 * from dibusb's bad i2c implementation: reads without
200 * writing the offset before are forbidden */
201 if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)
202 break;
203 }
204 }
205
206 mutex_unlock(&d->i2c_mutex);
207 return i;
208 }
209
dibusb_i2c_func(struct i2c_adapter * adapter)210 static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
211 {
212 return I2C_FUNC_I2C;
213 }
214
215 struct i2c_algorithm dibusb_i2c_algo = {
216 .master_xfer = dibusb_i2c_xfer,
217 .functionality = dibusb_i2c_func,
218 };
219 EXPORT_SYMBOL(dibusb_i2c_algo);
220
dibusb_read_eeprom_byte(struct dvb_usb_device * d,u8 offs,u8 * val)221 int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
222 {
223 u8 *buf;
224 int rc;
225
226 buf = kzalloc(2, GFP_KERNEL);
227 if (!buf)
228 return -ENOMEM;
229
230 buf[0] = offs;
231
232 rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
233 *val = buf[1];
234 kfree(buf);
235
236 return rc;
237 }
238 EXPORT_SYMBOL(dibusb_read_eeprom_byte);
239
240 /*
241 * common remote control stuff
242 */
243 struct rc_map_table rc_map_dibusb_table[] = {
244 /* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
245 { 0x0016, KEY_POWER },
246 { 0x0010, KEY_MUTE },
247 { 0x0003, KEY_1 },
248 { 0x0001, KEY_2 },
249 { 0x0006, KEY_3 },
250 { 0x0009, KEY_4 },
251 { 0x001d, KEY_5 },
252 { 0x001f, KEY_6 },
253 { 0x000d, KEY_7 },
254 { 0x0019, KEY_8 },
255 { 0x001b, KEY_9 },
256 { 0x0015, KEY_0 },
257 { 0x0005, KEY_CHANNELUP },
258 { 0x0002, KEY_CHANNELDOWN },
259 { 0x001e, KEY_VOLUMEUP },
260 { 0x000a, KEY_VOLUMEDOWN },
261 { 0x0011, KEY_RECORD },
262 { 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
263 { 0x0014, KEY_PLAY },
264 { 0x001a, KEY_STOP },
265 { 0x0040, KEY_REWIND },
266 { 0x0012, KEY_FASTFORWARD },
267 { 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
268 { 0x004c, KEY_PAUSE },
269 { 0x004d, KEY_SCREEN }, /* Full screen mode. */
270 { 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
271 /* additional keys TwinHan VisionPlus, the Artec seemingly not have */
272 { 0x000c, KEY_CANCEL }, /* Cancel */
273 { 0x001c, KEY_EPG }, /* EPG */
274 { 0x0000, KEY_TAB }, /* Tab */
275 { 0x0048, KEY_INFO }, /* Preview */
276 { 0x0004, KEY_LIST }, /* RecordList */
277 { 0x000f, KEY_TEXT }, /* Teletext */
278 /* Key codes for the KWorld/ADSTech/JetWay remote. */
279 { 0x8612, KEY_POWER },
280 { 0x860f, KEY_SELECT }, /* source */
281 { 0x860c, KEY_UNKNOWN }, /* scan */
282 { 0x860b, KEY_EPG },
283 { 0x8610, KEY_MUTE },
284 { 0x8601, KEY_1 },
285 { 0x8602, KEY_2 },
286 { 0x8603, KEY_3 },
287 { 0x8604, KEY_4 },
288 { 0x8605, KEY_5 },
289 { 0x8606, KEY_6 },
290 { 0x8607, KEY_7 },
291 { 0x8608, KEY_8 },
292 { 0x8609, KEY_9 },
293 { 0x860a, KEY_0 },
294 { 0x8618, KEY_ZOOM },
295 { 0x861c, KEY_UNKNOWN }, /* preview */
296 { 0x8613, KEY_UNKNOWN }, /* snap */
297 { 0x8600, KEY_UNDO },
298 { 0x861d, KEY_RECORD },
299 { 0x860d, KEY_STOP },
300 { 0x860e, KEY_PAUSE },
301 { 0x8616, KEY_PLAY },
302 { 0x8611, KEY_BACK },
303 { 0x8619, KEY_FORWARD },
304 { 0x8614, KEY_UNKNOWN }, /* pip */
305 { 0x8615, KEY_ESC },
306 { 0x861a, KEY_UP },
307 { 0x861e, KEY_DOWN },
308 { 0x861f, KEY_LEFT },
309 { 0x861b, KEY_RIGHT },
310
311 /* Key codes for the DiBcom MOD3000 remote. */
312 { 0x8000, KEY_MUTE },
313 { 0x8001, KEY_TEXT },
314 { 0x8002, KEY_HOME },
315 { 0x8003, KEY_POWER },
316
317 { 0x8004, KEY_RED },
318 { 0x8005, KEY_GREEN },
319 { 0x8006, KEY_YELLOW },
320 { 0x8007, KEY_BLUE },
321
322 { 0x8008, KEY_DVD },
323 { 0x8009, KEY_AUDIO },
324 { 0x800a, KEY_IMAGES }, /* Pictures */
325 { 0x800b, KEY_VIDEO },
326
327 { 0x800c, KEY_BACK },
328 { 0x800d, KEY_UP },
329 { 0x800e, KEY_RADIO },
330 { 0x800f, KEY_EPG },
331
332 { 0x8010, KEY_LEFT },
333 { 0x8011, KEY_OK },
334 { 0x8012, KEY_RIGHT },
335 { 0x8013, KEY_UNKNOWN }, /* SAP */
336
337 { 0x8014, KEY_TV },
338 { 0x8015, KEY_DOWN },
339 { 0x8016, KEY_MENU }, /* DVD Menu */
340 { 0x8017, KEY_LAST },
341
342 { 0x8018, KEY_RECORD },
343 { 0x8019, KEY_STOP },
344 { 0x801a, KEY_PAUSE },
345 { 0x801b, KEY_PLAY },
346
347 { 0x801c, KEY_PREVIOUS },
348 { 0x801d, KEY_REWIND },
349 { 0x801e, KEY_FASTFORWARD },
350 { 0x801f, KEY_NEXT},
351
352 { 0x8040, KEY_1 },
353 { 0x8041, KEY_2 },
354 { 0x8042, KEY_3 },
355 { 0x8043, KEY_CHANNELUP },
356
357 { 0x8044, KEY_4 },
358 { 0x8045, KEY_5 },
359 { 0x8046, KEY_6 },
360 { 0x8047, KEY_CHANNELDOWN },
361
362 { 0x8048, KEY_7 },
363 { 0x8049, KEY_8 },
364 { 0x804a, KEY_9 },
365 { 0x804b, KEY_VOLUMEUP },
366
367 { 0x804c, KEY_CLEAR },
368 { 0x804d, KEY_0 },
369 { 0x804e, KEY_ENTER },
370 { 0x804f, KEY_VOLUMEDOWN },
371 };
372 EXPORT_SYMBOL(rc_map_dibusb_table);
373
dibusb_rc_query(struct dvb_usb_device * d,u32 * event,int * state)374 int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
375 {
376 u8 *buf;
377 int ret;
378
379 buf = kmalloc(5, GFP_KERNEL);
380 if (!buf)
381 return -ENOMEM;
382
383 buf[0] = DIBUSB_REQ_POLL_REMOTE;
384
385 ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
386 if (ret < 0)
387 goto ret;
388
389 dvb_usb_nec_rc_key_to_event(d, buf, event, state);
390
391 if (buf[0] != 0)
392 deb_info("key: %*ph\n", 5, buf);
393
394 ret:
395 kfree(buf);
396
397 return ret;
398 }
399 EXPORT_SYMBOL(dibusb_rc_query);
400