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 */ |
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 | |
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 | |
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 | |
60 | int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff) |
61 | { |
62 | u8 *b; |
63 | int ret; |
64 | |
65 | b = kmalloc(size: 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(objp: b); |
76 | |
77 | msleep(msecs: 10); |
78 | |
79 | return ret; |
80 | } |
81 | EXPORT_SYMBOL(dibusb_power_ctrl); |
82 | |
83 | int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) |
84 | { |
85 | int ret; |
86 | u8 *b; |
87 | |
88 | b = kmalloc(size: 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(objp: b); |
109 | return ret; |
110 | } |
111 | EXPORT_SYMBOL(dibusb2_0_streaming_ctrl); |
112 | |
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(size: 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(objp: b); |
132 | |
133 | return ret; |
134 | } |
135 | EXPORT_SYMBOL(dibusb2_0_power_ctrl); |
136 | |
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(objp: sndbuf); |
172 | return ret; |
173 | } |
174 | |
175 | /* |
176 | * I2C master xfer function |
177 | */ |
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, addr: msg[i].addr, wbuf: msg[i].buf,wlen: msg[i].len, |
191 | rbuf: msg[i+1].buf,rlen: 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, addr: msg[i].addr, wbuf: msg[i].buf,wlen: msg[i].len,NULL,rlen: 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, addr: msg[i].addr, NULL, wlen: 0, rbuf: msg[i].buf, rlen: msg[i].len) < 0) |
202 | break; |
203 | } |
204 | } |
205 | |
206 | mutex_unlock(lock: &d->i2c_mutex); |
207 | return i; |
208 | } |
209 | |
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 | |
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(size: 2, GFP_KERNEL); |
227 | if (!buf) |
228 | return -ENOMEM; |
229 | |
230 | buf[0] = offs; |
231 | |
232 | rc = dibusb_i2c_msg(d, addr: 0x50, wbuf: &buf[0], wlen: 1, rbuf: &buf[1], rlen: 1); |
233 | *val = buf[1]; |
234 | kfree(objp: 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 | |
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(size: 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, keybuf: buf, event, state); |
390 | |
391 | if (buf[0] != 0) |
392 | deb_info("key: %*ph\n" , 5, buf); |
393 | |
394 | ret: |
395 | kfree(objp: buf); |
396 | |
397 | return ret; |
398 | } |
399 | EXPORT_SYMBOL(dibusb_rc_query); |
400 | |