Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | Conexant 22702 DVB OFDM demodulator driver | |
3 | ||
4 | based on: | |
5 | Alps TDMB7 DVB OFDM demodulator driver | |
6 | ||
7 | Copyright (C) 2001-2002 Convergence Integrated Media GmbH | |
8 | Holger Waechtler <holger@convergence.de> | |
9 | ||
10 | Copyright (C) 2004 Steven Toth <steve@toth.demon.co.uk> | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | ||
26 | */ | |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/string.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/delay.h> | |
34 | #include "dvb_frontend.h" | |
9990d744 | 35 | #include "dvb-pll.h" |
1da177e4 LT |
36 | #include "cx22702.h" |
37 | ||
38 | ||
39 | struct cx22702_state { | |
40 | ||
41 | struct i2c_adapter* i2c; | |
42 | ||
43 | struct dvb_frontend_ops ops; | |
44 | ||
45 | /* configuration settings */ | |
46 | const struct cx22702_config* config; | |
47 | ||
48 | struct dvb_frontend frontend; | |
49 | ||
50 | /* previous uncorrected block counter */ | |
51 | u8 prevUCBlocks; | |
52 | }; | |
53 | ||
54 | static int debug = 0; | |
55 | #define dprintk if (debug) printk | |
56 | ||
57 | /* Register values to initialise the demod */ | |
58 | static u8 init_tab [] = { | |
59 | 0x00, 0x00, /* Stop aquisition */ | |
60 | 0x0B, 0x06, | |
61 | 0x09, 0x01, | |
62 | 0x0D, 0x41, | |
63 | 0x16, 0x32, | |
64 | 0x20, 0x0A, | |
65 | 0x21, 0x17, | |
66 | 0x24, 0x3e, | |
67 | 0x26, 0xff, | |
68 | 0x27, 0x10, | |
69 | 0x28, 0x00, | |
70 | 0x29, 0x00, | |
71 | 0x2a, 0x10, | |
72 | 0x2b, 0x00, | |
73 | 0x2c, 0x10, | |
74 | 0x2d, 0x00, | |
75 | 0x48, 0xd4, | |
76 | 0x49, 0x56, | |
77 | 0x6b, 0x1e, | |
78 | 0xc8, 0x02, | |
79 | 0xf8, 0x02, | |
80 | 0xf9, 0x00, | |
81 | 0xfa, 0x00, | |
82 | 0xfb, 0x00, | |
83 | 0xfc, 0x00, | |
84 | 0xfd, 0x00, | |
85 | }; | |
86 | ||
87 | static int cx22702_writereg (struct cx22702_state* state, u8 reg, u8 data) | |
88 | { | |
89 | int ret; | |
90 | u8 buf [] = { reg, data }; | |
91 | struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; | |
92 | ||
93 | ret = i2c_transfer(state->i2c, &msg, 1); | |
94 | ||
95 | if (ret != 1) | |
96 | printk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n", | |
97 | __FUNCTION__, reg, data, ret); | |
98 | ||
99 | return (ret != 1) ? -1 : 0; | |
100 | } | |
101 | ||
102 | static u8 cx22702_readreg (struct cx22702_state* state, u8 reg) | |
103 | { | |
104 | int ret; | |
105 | u8 b0 [] = { reg }; | |
106 | u8 b1 [] = { 0 }; | |
107 | ||
108 | struct i2c_msg msg [] = { | |
109 | { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 }, | |
110 | { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; | |
111 | ||
112 | ret = i2c_transfer(state->i2c, msg, 2); | |
113 | ||
114 | if (ret != 2) | |
115 | printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret); | |
116 | ||
117 | return b1[0]; | |
118 | } | |
119 | ||
120 | static int cx22702_set_inversion (struct cx22702_state *state, int inversion) | |
121 | { | |
122 | u8 val; | |
123 | ||
124 | switch (inversion) { | |
125 | ||
126 | case INVERSION_AUTO: | |
127 | return -EOPNOTSUPP; | |
128 | ||
129 | case INVERSION_ON: | |
130 | val = cx22702_readreg (state, 0x0C); | |
131 | return cx22702_writereg (state, 0x0C, val | 0x01); | |
132 | ||
133 | case INVERSION_OFF: | |
134 | val = cx22702_readreg (state, 0x0C); | |
135 | return cx22702_writereg (state, 0x0C, val & 0xfe); | |
136 | ||
137 | default: | |
138 | return -EINVAL; | |
139 | ||
140 | } | |
141 | ||
142 | } | |
143 | ||
144 | /* Retrieve the demod settings */ | |
145 | static int cx22702_get_tps (struct cx22702_state *state, struct dvb_ofdm_parameters *p) | |
146 | { | |
147 | u8 val; | |
148 | ||
149 | /* Make sure the TPS regs are valid */ | |
150 | if (!(cx22702_readreg(state, 0x0A) & 0x20)) | |
151 | return -EAGAIN; | |
152 | ||
153 | val = cx22702_readreg (state, 0x01); | |
154 | switch( (val&0x18)>>3) { | |
155 | case 0: p->constellation = QPSK; break; | |
156 | case 1: p->constellation = QAM_16; break; | |
157 | case 2: p->constellation = QAM_64; break; | |
158 | } | |
159 | switch( val&0x07 ) { | |
160 | case 0: p->hierarchy_information = HIERARCHY_NONE; break; | |
161 | case 1: p->hierarchy_information = HIERARCHY_1; break; | |
162 | case 2: p->hierarchy_information = HIERARCHY_2; break; | |
163 | case 3: p->hierarchy_information = HIERARCHY_4; break; | |
164 | } | |
165 | ||
166 | ||
167 | val = cx22702_readreg (state, 0x02); | |
168 | switch( (val&0x38)>>3 ) { | |
169 | case 0: p->code_rate_HP = FEC_1_2; break; | |
170 | case 1: p->code_rate_HP = FEC_2_3; break; | |
171 | case 2: p->code_rate_HP = FEC_3_4; break; | |
172 | case 3: p->code_rate_HP = FEC_5_6; break; | |
173 | case 4: p->code_rate_HP = FEC_7_8; break; | |
174 | } | |
175 | switch( val&0x07 ) { | |
176 | case 0: p->code_rate_LP = FEC_1_2; break; | |
177 | case 1: p->code_rate_LP = FEC_2_3; break; | |
178 | case 2: p->code_rate_LP = FEC_3_4; break; | |
179 | case 3: p->code_rate_LP = FEC_5_6; break; | |
180 | case 4: p->code_rate_LP = FEC_7_8; break; | |
181 | } | |
182 | ||
183 | ||
184 | val = cx22702_readreg (state, 0x03); | |
185 | switch( (val&0x0c)>>2 ) { | |
186 | case 0: p->guard_interval = GUARD_INTERVAL_1_32; break; | |
187 | case 1: p->guard_interval = GUARD_INTERVAL_1_16; break; | |
188 | case 2: p->guard_interval = GUARD_INTERVAL_1_8; break; | |
189 | case 3: p->guard_interval = GUARD_INTERVAL_1_4; break; | |
190 | } | |
191 | switch( val&0x03 ) { | |
192 | case 0: p->transmission_mode = TRANSMISSION_MODE_2K; break; | |
193 | case 1: p->transmission_mode = TRANSMISSION_MODE_8K; break; | |
194 | } | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | /* Talk to the demod, set the FEC, GUARD, QAM settings etc */ | |
200 | static int cx22702_set_tps (struct dvb_frontend* fe, struct dvb_frontend_parameters *p) | |
201 | { | |
202 | u8 val; | |
b8742700 | 203 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
204 | |
205 | /* set PLL */ | |
206 | cx22702_writereg (state, 0x0D, cx22702_readreg(state,0x0D) &0xfe); | |
9990d744 GK |
207 | if (state->config->pll_set) { |
208 | state->config->pll_set(fe, p); | |
209 | } else if (state->config->pll_desc) { | |
210 | u8 pllbuf[4]; | |
211 | struct i2c_msg msg = { .addr = state->config->pll_address, | |
212 | .buf = pllbuf, .len = 4 }; | |
213 | dvb_pll_configure(state->config->pll_desc, pllbuf, | |
214 | p->frequency, | |
215 | p->u.ofdm.bandwidth); | |
216 | i2c_transfer(state->i2c, &msg, 1); | |
217 | } else { | |
218 | BUG(); | |
219 | } | |
1da177e4 LT |
220 | cx22702_writereg (state, 0x0D, cx22702_readreg(state,0x0D) | 1); |
221 | ||
222 | /* set inversion */ | |
223 | cx22702_set_inversion (state, p->inversion); | |
224 | ||
225 | /* set bandwidth */ | |
226 | switch(p->u.ofdm.bandwidth) { | |
227 | case BANDWIDTH_6_MHZ: | |
228 | cx22702_writereg(state, 0x0C, (cx22702_readreg(state, 0x0C) & 0xcf) | 0x20 ); | |
229 | break; | |
230 | case BANDWIDTH_7_MHZ: | |
231 | cx22702_writereg(state, 0x0C, (cx22702_readreg(state, 0x0C) & 0xcf) | 0x10 ); | |
232 | break; | |
233 | case BANDWIDTH_8_MHZ: | |
234 | cx22702_writereg(state, 0x0C, cx22702_readreg(state, 0x0C) &0xcf ); | |
235 | break; | |
236 | default: | |
237 | dprintk ("%s: invalid bandwidth\n",__FUNCTION__); | |
238 | return -EINVAL; | |
239 | } | |
240 | ||
241 | ||
242 | p->u.ofdm.code_rate_LP = FEC_AUTO; //temp hack as manual not working | |
243 | ||
244 | /* use auto configuration? */ | |
245 | if((p->u.ofdm.hierarchy_information==HIERARCHY_AUTO) || | |
246 | (p->u.ofdm.constellation==QAM_AUTO) || | |
247 | (p->u.ofdm.code_rate_HP==FEC_AUTO) || | |
248 | (p->u.ofdm.code_rate_LP==FEC_AUTO) || | |
249 | (p->u.ofdm.guard_interval==GUARD_INTERVAL_AUTO) || | |
250 | (p->u.ofdm.transmission_mode==TRANSMISSION_MODE_AUTO) ) { | |
251 | ||
252 | /* TPS Source - use hardware driven values */ | |
253 | cx22702_writereg(state, 0x06, 0x10); | |
254 | cx22702_writereg(state, 0x07, 0x9); | |
255 | cx22702_writereg(state, 0x08, 0xC1); | |
256 | cx22702_writereg(state, 0x0B, cx22702_readreg(state, 0x0B) & 0xfc ); | |
257 | cx22702_writereg(state, 0x0C, (cx22702_readreg(state, 0x0C) & 0xBF) | 0x40 ); | |
258 | cx22702_writereg(state, 0x00, 0x01); /* Begin aquisition */ | |
259 | printk("%s: Autodetecting\n",__FUNCTION__); | |
260 | return 0; | |
261 | } | |
262 | ||
263 | /* manually programmed values */ | |
264 | val=0; | |
265 | switch(p->u.ofdm.constellation) { | |
266 | case QPSK: val = (val&0xe7); break; | |
267 | case QAM_16: val = (val&0xe7)|0x08; break; | |
268 | case QAM_64: val = (val&0xe7)|0x10; break; | |
269 | default: | |
270 | dprintk ("%s: invalid constellation\n",__FUNCTION__); | |
271 | return -EINVAL; | |
272 | } | |
273 | switch(p->u.ofdm.hierarchy_information) { | |
274 | case HIERARCHY_NONE: val = (val&0xf8); break; | |
275 | case HIERARCHY_1: val = (val&0xf8)|1; break; | |
276 | case HIERARCHY_2: val = (val&0xf8)|2; break; | |
277 | case HIERARCHY_4: val = (val&0xf8)|3; break; | |
278 | default: | |
279 | dprintk ("%s: invalid hierarchy\n",__FUNCTION__); | |
280 | return -EINVAL; | |
281 | } | |
282 | cx22702_writereg (state, 0x06, val); | |
283 | ||
284 | val=0; | |
285 | switch(p->u.ofdm.code_rate_HP) { | |
286 | case FEC_NONE: | |
287 | case FEC_1_2: val = (val&0xc7); break; | |
288 | case FEC_2_3: val = (val&0xc7)|0x08; break; | |
289 | case FEC_3_4: val = (val&0xc7)|0x10; break; | |
290 | case FEC_5_6: val = (val&0xc7)|0x18; break; | |
291 | case FEC_7_8: val = (val&0xc7)|0x20; break; | |
292 | default: | |
293 | dprintk ("%s: invalid code_rate_HP\n",__FUNCTION__); | |
294 | return -EINVAL; | |
295 | } | |
296 | switch(p->u.ofdm.code_rate_LP) { | |
297 | case FEC_NONE: | |
298 | case FEC_1_2: val = (val&0xf8); break; | |
299 | case FEC_2_3: val = (val&0xf8)|1; break; | |
300 | case FEC_3_4: val = (val&0xf8)|2; break; | |
301 | case FEC_5_6: val = (val&0xf8)|3; break; | |
302 | case FEC_7_8: val = (val&0xf8)|4; break; | |
303 | default: | |
304 | dprintk ("%s: invalid code_rate_LP\n",__FUNCTION__); | |
305 | return -EINVAL; | |
306 | } | |
307 | cx22702_writereg (state, 0x07, val); | |
308 | ||
309 | val=0; | |
310 | switch(p->u.ofdm.guard_interval) { | |
311 | case GUARD_INTERVAL_1_32: val = (val&0xf3); break; | |
312 | case GUARD_INTERVAL_1_16: val = (val&0xf3)|0x04; break; | |
313 | case GUARD_INTERVAL_1_8: val = (val&0xf3)|0x08; break; | |
314 | case GUARD_INTERVAL_1_4: val = (val&0xf3)|0x0c; break; | |
315 | default: | |
316 | dprintk ("%s: invalid guard_interval\n",__FUNCTION__); | |
317 | return -EINVAL; | |
318 | } | |
319 | switch(p->u.ofdm.transmission_mode) { | |
320 | case TRANSMISSION_MODE_2K: val = (val&0xfc); break; | |
321 | case TRANSMISSION_MODE_8K: val = (val&0xfc)|1; break; | |
322 | default: | |
323 | dprintk ("%s: invalid transmission_mode\n",__FUNCTION__); | |
324 | return -EINVAL; | |
325 | } | |
326 | cx22702_writereg(state, 0x08, val); | |
327 | cx22702_writereg(state, 0x0B, (cx22702_readreg(state, 0x0B) & 0xfc) | 0x02 ); | |
328 | cx22702_writereg(state, 0x0C, (cx22702_readreg(state, 0x0C) & 0xBF) | 0x40 ); | |
329 | ||
330 | /* Begin channel aquisition */ | |
331 | cx22702_writereg(state, 0x00, 0x01); | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | /* Reset the demod hardware and reset all of the configuration registers | |
337 | to a default state. */ | |
338 | static int cx22702_init (struct dvb_frontend* fe) | |
339 | { | |
340 | int i; | |
b8742700 | 341 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
342 | |
343 | cx22702_writereg (state, 0x00, 0x02); | |
344 | ||
345 | msleep(10); | |
346 | ||
347 | for (i=0; i<sizeof(init_tab); i+=2) | |
348 | cx22702_writereg (state, init_tab[i], init_tab[i+1]); | |
349 | ||
350 | ||
351 | /* init PLL */ | |
352 | if (state->config->pll_init) { | |
353 | cx22702_writereg (state, 0x0D, cx22702_readreg(state,0x0D) &0xfe); | |
354 | state->config->pll_init(fe); | |
355 | cx22702_writereg (state, 0x0D, cx22702_readreg(state,0x0D) | 1); | |
356 | } | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
361 | static int cx22702_read_status(struct dvb_frontend* fe, fe_status_t* status) | |
362 | { | |
b8742700 | 363 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
364 | u8 reg0A; |
365 | u8 reg23; | |
366 | ||
367 | *status = 0; | |
368 | ||
369 | reg0A = cx22702_readreg (state, 0x0A); | |
370 | reg23 = cx22702_readreg (state, 0x23); | |
371 | ||
372 | dprintk ("%s: status demod=0x%02x agc=0x%02x\n" | |
373 | ,__FUNCTION__,reg0A,reg23); | |
374 | ||
375 | if(reg0A & 0x10) { | |
376 | *status |= FE_HAS_LOCK; | |
377 | *status |= FE_HAS_VITERBI; | |
378 | *status |= FE_HAS_SYNC; | |
379 | } | |
380 | ||
381 | if(reg0A & 0x20) | |
382 | *status |= FE_HAS_CARRIER; | |
383 | ||
384 | if(reg23 < 0xf0) | |
385 | *status |= FE_HAS_SIGNAL; | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | static int cx22702_read_ber(struct dvb_frontend* fe, u32* ber) | |
391 | { | |
b8742700 | 392 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
393 | |
394 | if(cx22702_readreg (state, 0xE4) & 0x02) { | |
395 | /* Realtime statistics */ | |
396 | *ber = (cx22702_readreg (state, 0xDE) & 0x7F) << 7 | |
397 | | (cx22702_readreg (state, 0xDF)&0x7F); | |
398 | } else { | |
399 | /* Averagtine statistics */ | |
400 | *ber = (cx22702_readreg (state, 0xDE) & 0x7F) << 7 | |
401 | | cx22702_readreg (state, 0xDF); | |
402 | } | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | static int cx22702_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) | |
408 | { | |
b8742700 | 409 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
410 | |
411 | *signal_strength = cx22702_readreg (state, 0x23); | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | static int cx22702_read_snr(struct dvb_frontend* fe, u16* snr) | |
417 | { | |
b8742700 | 418 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
419 | |
420 | u16 rs_ber=0; | |
421 | if(cx22702_readreg (state, 0xE4) & 0x02) { | |
422 | /* Realtime statistics */ | |
423 | rs_ber = (cx22702_readreg (state, 0xDE) & 0x7F) << 7 | |
424 | | (cx22702_readreg (state, 0xDF)& 0x7F); | |
425 | } else { | |
426 | /* Averagine statistics */ | |
427 | rs_ber = (cx22702_readreg (state, 0xDE) & 0x7F) << 8 | |
428 | | cx22702_readreg (state, 0xDF); | |
429 | } | |
430 | *snr = ~rs_ber; | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | static int cx22702_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) | |
436 | { | |
b8742700 | 437 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
438 | |
439 | u8 _ucblocks; | |
440 | ||
441 | /* RS Uncorrectable Packet Count then reset */ | |
442 | _ucblocks = cx22702_readreg (state, 0xE3); | |
443 | if (state->prevUCBlocks < _ucblocks) *ucblocks = (_ucblocks - state->prevUCBlocks); | |
444 | else *ucblocks = state->prevUCBlocks - _ucblocks; | |
445 | state->prevUCBlocks = _ucblocks; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | static int cx22702_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) | |
451 | { | |
b8742700 | 452 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
453 | |
454 | u8 reg0C = cx22702_readreg (state, 0x0C); | |
455 | ||
456 | p->inversion = reg0C & 0x1 ? INVERSION_ON : INVERSION_OFF; | |
457 | return cx22702_get_tps (state, &p->u.ofdm); | |
458 | } | |
459 | ||
460 | static void cx22702_release(struct dvb_frontend* fe) | |
461 | { | |
b8742700 | 462 | struct cx22702_state* state = fe->demodulator_priv; |
1da177e4 LT |
463 | kfree(state); |
464 | } | |
465 | ||
466 | static struct dvb_frontend_ops cx22702_ops; | |
467 | ||
468 | struct dvb_frontend* cx22702_attach(const struct cx22702_config* config, | |
469 | struct i2c_adapter* i2c) | |
470 | { | |
471 | struct cx22702_state* state = NULL; | |
472 | ||
473 | /* allocate memory for the internal state */ | |
b8742700 | 474 | state = kmalloc(sizeof(struct cx22702_state), GFP_KERNEL); |
1da177e4 LT |
475 | if (state == NULL) goto error; |
476 | ||
477 | /* setup the state */ | |
478 | state->config = config; | |
479 | state->i2c = i2c; | |
480 | memcpy(&state->ops, &cx22702_ops, sizeof(struct dvb_frontend_ops)); | |
481 | state->prevUCBlocks = 0; | |
482 | ||
483 | /* check if the demod is there */ | |
484 | if (cx22702_readreg(state, 0x1f) != 0x3) goto error; | |
485 | ||
486 | /* create dvb_frontend */ | |
487 | state->frontend.ops = &state->ops; | |
488 | state->frontend.demodulator_priv = state; | |
489 | return &state->frontend; | |
490 | ||
491 | error: | |
492 | kfree(state); | |
493 | return NULL; | |
494 | } | |
495 | ||
496 | static struct dvb_frontend_ops cx22702_ops = { | |
497 | ||
498 | .info = { | |
499 | .name = "Conexant CX22702 DVB-T", | |
500 | .type = FE_OFDM, | |
501 | .frequency_min = 177000000, | |
502 | .frequency_max = 858000000, | |
503 | .frequency_stepsize = 166666, | |
504 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
505 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | | |
506 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
507 | FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | | |
508 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER | |
509 | }, | |
510 | ||
511 | .release = cx22702_release, | |
512 | ||
513 | .init = cx22702_init, | |
514 | ||
515 | .set_frontend = cx22702_set_tps, | |
516 | .get_frontend = cx22702_get_frontend, | |
517 | ||
518 | .read_status = cx22702_read_status, | |
519 | .read_ber = cx22702_read_ber, | |
520 | .read_signal_strength = cx22702_read_signal_strength, | |
521 | .read_snr = cx22702_read_snr, | |
522 | .read_ucblocks = cx22702_read_ucblocks, | |
523 | }; | |
524 | ||
525 | module_param(debug, int, 0644); | |
526 | MODULE_PARM_DESC(debug, "Enable verbose debug messages"); | |
527 | ||
528 | MODULE_DESCRIPTION("Conexant CX22702 DVB-T Demodulator driver"); | |
529 | MODULE_AUTHOR("Steven Toth"); | |
530 | MODULE_LICENSE("GPL"); | |
531 | ||
532 | EXPORT_SYMBOL(cx22702_attach); |