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