Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | NxtWave Communications - NXT6000 demodulator driver | |
3 | ||
4 | Copyright (C) 2002-2003 Florian Schirmer <jolt@tuxbox.org> | |
5 | Copyright (C) 2003 Paul Andreassen <paul@andreassen.com.au> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | #include <linux/init.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/slab.h> | |
27 | ||
28 | #include "dvb_frontend.h" | |
29 | #include "nxt6000_priv.h" | |
30 | #include "nxt6000.h" | |
31 | ||
32 | ||
33 | ||
34 | struct nxt6000_state { | |
35 | struct i2c_adapter* i2c; | |
1da177e4 LT |
36 | /* configuration settings */ |
37 | const struct nxt6000_config* config; | |
38 | struct dvb_frontend frontend; | |
39 | }; | |
40 | ||
ff699e6b | 41 | static int debug; |
1da177e4 LT |
42 | #define dprintk if (debug) printk |
43 | ||
44 | static int nxt6000_writereg(struct nxt6000_state* state, u8 reg, u8 data) | |
45 | { | |
46 | u8 buf[] = { reg, data }; | |
47 | struct i2c_msg msg = {.addr = state->config->demod_address,.flags = 0,.buf = buf,.len = 2 }; | |
48 | int ret; | |
49 | ||
50 | if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) | |
51 | dprintk("nxt6000: nxt6000_write error (reg: 0x%02X, data: 0x%02X, ret: %d)\n", reg, data, ret); | |
52 | ||
7464aa50 | 53 | return (ret != 1) ? -EIO : 0; |
1da177e4 LT |
54 | } |
55 | ||
56 | static u8 nxt6000_readreg(struct nxt6000_state* state, u8 reg) | |
57 | { | |
58 | int ret; | |
59 | u8 b0[] = { reg }; | |
60 | u8 b1[] = { 0 }; | |
61 | struct i2c_msg msgs[] = { | |
62 | {.addr = state->config->demod_address,.flags = 0,.buf = b0,.len = 1}, | |
63 | {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b1,.len = 1} | |
64 | }; | |
65 | ||
66 | ret = i2c_transfer(state->i2c, msgs, 2); | |
67 | ||
68 | if (ret != 2) | |
69 | dprintk("nxt6000: nxt6000_read error (reg: 0x%02X, ret: %d)\n", reg, ret); | |
70 | ||
71 | return b1[0]; | |
72 | } | |
73 | ||
74 | static void nxt6000_reset(struct nxt6000_state* state) | |
75 | { | |
76 | u8 val; | |
77 | ||
78 | val = nxt6000_readreg(state, OFDM_COR_CTL); | |
79 | ||
80 | nxt6000_writereg(state, OFDM_COR_CTL, val & ~COREACT); | |
81 | nxt6000_writereg(state, OFDM_COR_CTL, val | COREACT); | |
82 | } | |
83 | ||
84 | static int nxt6000_set_bandwidth(struct nxt6000_state* state, fe_bandwidth_t bandwidth) | |
85 | { | |
86 | u16 nominal_rate; | |
87 | int result; | |
88 | ||
89 | switch (bandwidth) { | |
90 | ||
91 | case BANDWIDTH_6_MHZ: | |
92 | nominal_rate = 0x55B7; | |
93 | break; | |
94 | ||
95 | case BANDWIDTH_7_MHZ: | |
96 | nominal_rate = 0x6400; | |
97 | break; | |
98 | ||
99 | case BANDWIDTH_8_MHZ: | |
100 | nominal_rate = 0x7249; | |
101 | break; | |
102 | ||
103 | default: | |
104 | return -EINVAL; | |
105 | } | |
106 | ||
107 | if ((result = nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_1, nominal_rate & 0xFF)) < 0) | |
108 | return result; | |
109 | ||
110 | return nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_2, (nominal_rate >> 8) & 0xFF); | |
111 | } | |
112 | ||
113 | static int nxt6000_set_guard_interval(struct nxt6000_state* state, fe_guard_interval_t guard_interval) | |
114 | { | |
115 | switch (guard_interval) { | |
116 | ||
117 | case GUARD_INTERVAL_1_32: | |
118 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x00 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); | |
119 | ||
120 | case GUARD_INTERVAL_1_16: | |
121 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x01 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); | |
122 | ||
123 | case GUARD_INTERVAL_AUTO: | |
124 | case GUARD_INTERVAL_1_8: | |
125 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x02 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); | |
126 | ||
127 | case GUARD_INTERVAL_1_4: | |
128 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x03 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); | |
129 | ||
130 | default: | |
131 | return -EINVAL; | |
132 | } | |
133 | } | |
134 | ||
135 | static int nxt6000_set_inversion(struct nxt6000_state* state, fe_spectral_inversion_t inversion) | |
136 | { | |
137 | switch (inversion) { | |
138 | ||
139 | case INVERSION_OFF: | |
140 | return nxt6000_writereg(state, OFDM_ITB_CTL, 0x00); | |
141 | ||
142 | case INVERSION_ON: | |
143 | return nxt6000_writereg(state, OFDM_ITB_CTL, ITBINV); | |
144 | ||
145 | default: | |
146 | return -EINVAL; | |
147 | ||
148 | } | |
149 | } | |
150 | ||
151 | static int nxt6000_set_transmission_mode(struct nxt6000_state* state, fe_transmit_mode_t transmission_mode) | |
152 | { | |
153 | int result; | |
154 | ||
155 | switch (transmission_mode) { | |
156 | ||
157 | case TRANSMISSION_MODE_2K: | |
158 | if ((result = nxt6000_writereg(state, EN_DMD_RACQ, 0x00 | (nxt6000_readreg(state, EN_DMD_RACQ) & ~0x03))) < 0) | |
159 | return result; | |
160 | ||
161 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, (0x00 << 2) | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x04)); | |
162 | ||
163 | case TRANSMISSION_MODE_8K: | |
164 | case TRANSMISSION_MODE_AUTO: | |
165 | if ((result = nxt6000_writereg(state, EN_DMD_RACQ, 0x02 | (nxt6000_readreg(state, EN_DMD_RACQ) & ~0x03))) < 0) | |
166 | return result; | |
167 | ||
168 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, (0x01 << 2) | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x04)); | |
169 | ||
170 | default: | |
171 | return -EINVAL; | |
172 | ||
173 | } | |
174 | } | |
175 | ||
176 | static void nxt6000_setup(struct dvb_frontend* fe) | |
177 | { | |
b8742700 | 178 | struct nxt6000_state* state = fe->demodulator_priv; |
1da177e4 LT |
179 | |
180 | nxt6000_writereg(state, RS_COR_SYNC_PARAM, SYNC_PARAM); | |
181 | nxt6000_writereg(state, BER_CTRL, /*(1 << 2) | */ (0x01 << 1) | 0x01); | |
3a4a5711 JS |
182 | nxt6000_writereg(state, VIT_BERTIME_2, 0x00); // BER Timer = 0x000200 * 256 = 131072 bits |
183 | nxt6000_writereg(state, VIT_BERTIME_1, 0x02); // | |
184 | nxt6000_writereg(state, VIT_BERTIME_0, 0x00); // | |
185 | nxt6000_writereg(state, VIT_COR_INTEN, 0x98); // Enable BER interrupts | |
186 | nxt6000_writereg(state, VIT_COR_CTL, 0x82); // Enable BER measurement | |
187 | nxt6000_writereg(state, VIT_COR_CTL, VIT_COR_RESYNC | 0x02 ); | |
1da177e4 LT |
188 | nxt6000_writereg(state, OFDM_COR_CTL, (0x01 << 5) | (nxt6000_readreg(state, OFDM_COR_CTL) & 0x0F)); |
189 | nxt6000_writereg(state, OFDM_COR_MODEGUARD, FORCEMODE8K | 0x02); | |
190 | nxt6000_writereg(state, OFDM_AGC_CTL, AGCLAST | INITIAL_AGC_BW); | |
191 | nxt6000_writereg(state, OFDM_ITB_FREQ_1, 0x06); | |
192 | nxt6000_writereg(state, OFDM_ITB_FREQ_2, 0x31); | |
193 | nxt6000_writereg(state, OFDM_CAS_CTL, (0x01 << 7) | (0x02 << 3) | 0x04); | |
194 | nxt6000_writereg(state, CAS_FREQ, 0xBB); /* CHECKME */ | |
195 | nxt6000_writereg(state, OFDM_SYR_CTL, 1 << 2); | |
196 | nxt6000_writereg(state, OFDM_PPM_CTL_1, PPM256); | |
197 | nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_1, 0x49); | |
198 | nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_2, 0x72); | |
199 | nxt6000_writereg(state, ANALOG_CONTROL_0, 1 << 5); | |
200 | nxt6000_writereg(state, EN_DMD_RACQ, (1 << 7) | (3 << 4) | 2); | |
201 | nxt6000_writereg(state, DIAG_CONFIG, TB_SET); | |
202 | ||
203 | if (state->config->clock_inversion) | |
204 | nxt6000_writereg(state, SUB_DIAG_MODE_SEL, CLKINVERSION); | |
205 | else | |
206 | nxt6000_writereg(state, SUB_DIAG_MODE_SEL, 0); | |
207 | ||
208 | nxt6000_writereg(state, TS_FORMAT, 0); | |
1da177e4 LT |
209 | } |
210 | ||
211 | static void nxt6000_dump_status(struct nxt6000_state *state) | |
212 | { | |
213 | u8 val; | |
214 | ||
215 | /* | |
216 | printk("RS_COR_STAT: 0x%02X\n", nxt6000_readreg(fe, RS_COR_STAT)); | |
217 | printk("VIT_SYNC_STATUS: 0x%02X\n", nxt6000_readreg(fe, VIT_SYNC_STATUS)); | |
218 | printk("OFDM_COR_STAT: 0x%02X\n", nxt6000_readreg(fe, OFDM_COR_STAT)); | |
219 | printk("OFDM_SYR_STAT: 0x%02X\n", nxt6000_readreg(fe, OFDM_SYR_STAT)); | |
220 | printk("OFDM_TPS_RCVD_1: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_1)); | |
221 | printk("OFDM_TPS_RCVD_2: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_2)); | |
222 | printk("OFDM_TPS_RCVD_3: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_3)); | |
223 | printk("OFDM_TPS_RCVD_4: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_4)); | |
224 | printk("OFDM_TPS_RESERVED_1: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RESERVED_1)); | |
225 | printk("OFDM_TPS_RESERVED_2: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RESERVED_2)); | |
226 | */ | |
227 | printk("NXT6000 status:"); | |
228 | ||
229 | val = nxt6000_readreg(state, RS_COR_STAT); | |
230 | ||
231 | printk(" DATA DESCR LOCK: %d,", val & 0x01); | |
232 | printk(" DATA SYNC LOCK: %d,", (val >> 1) & 0x01); | |
233 | ||
234 | val = nxt6000_readreg(state, VIT_SYNC_STATUS); | |
235 | ||
236 | printk(" VITERBI LOCK: %d,", (val >> 7) & 0x01); | |
237 | ||
238 | switch ((val >> 4) & 0x07) { | |
239 | ||
240 | case 0x00: | |
241 | printk(" VITERBI CODERATE: 1/2,"); | |
242 | break; | |
243 | ||
244 | case 0x01: | |
245 | printk(" VITERBI CODERATE: 2/3,"); | |
246 | break; | |
247 | ||
248 | case 0x02: | |
249 | printk(" VITERBI CODERATE: 3/4,"); | |
250 | break; | |
251 | ||
252 | case 0x03: | |
253 | printk(" VITERBI CODERATE: 5/6,"); | |
254 | break; | |
255 | ||
256 | case 0x04: | |
257 | printk(" VITERBI CODERATE: 7/8,"); | |
258 | break; | |
259 | ||
260 | default: | |
261 | printk(" VITERBI CODERATE: Reserved,"); | |
262 | ||
263 | } | |
264 | ||
265 | val = nxt6000_readreg(state, OFDM_COR_STAT); | |
266 | ||
267 | printk(" CHCTrack: %d,", (val >> 7) & 0x01); | |
268 | printk(" TPSLock: %d,", (val >> 6) & 0x01); | |
269 | printk(" SYRLock: %d,", (val >> 5) & 0x01); | |
270 | printk(" AGCLock: %d,", (val >> 4) & 0x01); | |
271 | ||
272 | switch (val & 0x0F) { | |
273 | ||
274 | case 0x00: | |
275 | printk(" CoreState: IDLE,"); | |
276 | break; | |
277 | ||
278 | case 0x02: | |
279 | printk(" CoreState: WAIT_AGC,"); | |
280 | break; | |
281 | ||
282 | case 0x03: | |
283 | printk(" CoreState: WAIT_SYR,"); | |
284 | break; | |
285 | ||
286 | case 0x04: | |
287 | printk(" CoreState: WAIT_PPM,"); | |
288 | break; | |
289 | ||
290 | case 0x01: | |
291 | printk(" CoreState: WAIT_TRL,"); | |
292 | break; | |
293 | ||
294 | case 0x05: | |
295 | printk(" CoreState: WAIT_TPS,"); | |
296 | break; | |
297 | ||
298 | case 0x06: | |
299 | printk(" CoreState: MONITOR_TPS,"); | |
300 | break; | |
301 | ||
302 | default: | |
303 | printk(" CoreState: Reserved,"); | |
304 | ||
305 | } | |
306 | ||
307 | val = nxt6000_readreg(state, OFDM_SYR_STAT); | |
308 | ||
309 | printk(" SYRLock: %d,", (val >> 4) & 0x01); | |
310 | printk(" SYRMode: %s,", (val >> 2) & 0x01 ? "8K" : "2K"); | |
311 | ||
312 | switch ((val >> 4) & 0x03) { | |
313 | ||
314 | case 0x00: | |
315 | printk(" SYRGuard: 1/32,"); | |
316 | break; | |
317 | ||
318 | case 0x01: | |
319 | printk(" SYRGuard: 1/16,"); | |
320 | break; | |
321 | ||
322 | case 0x02: | |
323 | printk(" SYRGuard: 1/8,"); | |
324 | break; | |
325 | ||
326 | case 0x03: | |
327 | printk(" SYRGuard: 1/4,"); | |
328 | break; | |
329 | } | |
330 | ||
331 | val = nxt6000_readreg(state, OFDM_TPS_RCVD_3); | |
332 | ||
333 | switch ((val >> 4) & 0x07) { | |
334 | ||
335 | case 0x00: | |
336 | printk(" TPSLP: 1/2,"); | |
337 | break; | |
338 | ||
339 | case 0x01: | |
340 | printk(" TPSLP: 2/3,"); | |
341 | break; | |
342 | ||
343 | case 0x02: | |
344 | printk(" TPSLP: 3/4,"); | |
345 | break; | |
346 | ||
347 | case 0x03: | |
348 | printk(" TPSLP: 5/6,"); | |
349 | break; | |
350 | ||
351 | case 0x04: | |
352 | printk(" TPSLP: 7/8,"); | |
353 | break; | |
354 | ||
355 | default: | |
356 | printk(" TPSLP: Reserved,"); | |
357 | ||
358 | } | |
359 | ||
360 | switch (val & 0x07) { | |
361 | ||
362 | case 0x00: | |
363 | printk(" TPSHP: 1/2,"); | |
364 | break; | |
365 | ||
366 | case 0x01: | |
367 | printk(" TPSHP: 2/3,"); | |
368 | break; | |
369 | ||
370 | case 0x02: | |
371 | printk(" TPSHP: 3/4,"); | |
372 | break; | |
373 | ||
374 | case 0x03: | |
375 | printk(" TPSHP: 5/6,"); | |
376 | break; | |
377 | ||
378 | case 0x04: | |
379 | printk(" TPSHP: 7/8,"); | |
380 | break; | |
381 | ||
382 | default: | |
383 | printk(" TPSHP: Reserved,"); | |
384 | ||
385 | } | |
386 | ||
387 | val = nxt6000_readreg(state, OFDM_TPS_RCVD_4); | |
388 | ||
389 | printk(" TPSMode: %s,", val & 0x01 ? "8K" : "2K"); | |
390 | ||
391 | switch ((val >> 4) & 0x03) { | |
392 | ||
393 | case 0x00: | |
394 | printk(" TPSGuard: 1/32,"); | |
395 | break; | |
396 | ||
397 | case 0x01: | |
398 | printk(" TPSGuard: 1/16,"); | |
399 | break; | |
400 | ||
401 | case 0x02: | |
402 | printk(" TPSGuard: 1/8,"); | |
403 | break; | |
404 | ||
405 | case 0x03: | |
406 | printk(" TPSGuard: 1/4,"); | |
407 | break; | |
408 | ||
409 | } | |
410 | ||
411 | /* Strange magic required to gain access to RF_AGC_STATUS */ | |
412 | nxt6000_readreg(state, RF_AGC_VAL_1); | |
413 | val = nxt6000_readreg(state, RF_AGC_STATUS); | |
414 | val = nxt6000_readreg(state, RF_AGC_STATUS); | |
415 | ||
416 | printk(" RF AGC LOCK: %d,", (val >> 4) & 0x01); | |
417 | printk("\n"); | |
418 | } | |
419 | ||
420 | static int nxt6000_read_status(struct dvb_frontend* fe, fe_status_t* status) | |
421 | { | |
422 | u8 core_status; | |
b8742700 | 423 | struct nxt6000_state* state = fe->demodulator_priv; |
1da177e4 LT |
424 | |
425 | *status = 0; | |
426 | ||
427 | core_status = nxt6000_readreg(state, OFDM_COR_STAT); | |
428 | ||
429 | if (core_status & AGCLOCKED) | |
430 | *status |= FE_HAS_SIGNAL; | |
431 | ||
432 | if (nxt6000_readreg(state, OFDM_SYR_STAT) & GI14_SYR_LOCK) | |
433 | *status |= FE_HAS_CARRIER; | |
434 | ||
435 | if (nxt6000_readreg(state, VIT_SYNC_STATUS) & VITINSYNC) | |
436 | *status |= FE_HAS_VITERBI; | |
437 | ||
438 | if (nxt6000_readreg(state, RS_COR_STAT) & RSCORESTATUS) | |
439 | *status |= FE_HAS_SYNC; | |
440 | ||
441 | if ((core_status & TPSLOCKED) && (*status == (FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))) | |
442 | *status |= FE_HAS_LOCK; | |
443 | ||
444 | if (debug) | |
445 | nxt6000_dump_status(state); | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | static int nxt6000_init(struct dvb_frontend* fe) | |
451 | { | |
b8742700 | 452 | struct nxt6000_state* state = fe->demodulator_priv; |
1da177e4 LT |
453 | |
454 | nxt6000_reset(state); | |
455 | nxt6000_setup(fe); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static int nxt6000_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *param) | |
461 | { | |
b8742700 | 462 | struct nxt6000_state* state = fe->demodulator_priv; |
1da177e4 LT |
463 | int result; |
464 | ||
dea74869 | 465 | if (fe->ops.tuner_ops.set_params) { |
14d24d14 | 466 | fe->ops.tuner_ops.set_params(fe); |
dea74869 | 467 | if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); |
605ee41c | 468 | } |
1da177e4 LT |
469 | |
470 | if ((result = nxt6000_set_bandwidth(state, param->u.ofdm.bandwidth)) < 0) | |
471 | return result; | |
472 | if ((result = nxt6000_set_guard_interval(state, param->u.ofdm.guard_interval)) < 0) | |
473 | return result; | |
474 | if ((result = nxt6000_set_transmission_mode(state, param->u.ofdm.transmission_mode)) < 0) | |
475 | return result; | |
476 | if ((result = nxt6000_set_inversion(state, param->inversion)) < 0) | |
477 | return result; | |
478 | ||
115eea4e | 479 | msleep(500); |
1da177e4 LT |
480 | return 0; |
481 | } | |
482 | ||
483 | static void nxt6000_release(struct dvb_frontend* fe) | |
484 | { | |
b8742700 | 485 | struct nxt6000_state* state = fe->demodulator_priv; |
1da177e4 LT |
486 | kfree(state); |
487 | } | |
488 | ||
3a4a5711 JS |
489 | static int nxt6000_read_snr(struct dvb_frontend* fe, u16* snr) |
490 | { | |
b8742700 | 491 | struct nxt6000_state* state = fe->demodulator_priv; |
3a4a5711 JS |
492 | |
493 | *snr = nxt6000_readreg( state, OFDM_CHC_SNR) / 8; | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
498 | static int nxt6000_read_ber(struct dvb_frontend* fe, u32* ber) | |
499 | { | |
b8742700 | 500 | struct nxt6000_state* state = fe->demodulator_priv; |
3a4a5711 JS |
501 | |
502 | nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18 ); | |
503 | ||
504 | *ber = (nxt6000_readreg( state, VIT_BER_1 ) << 8 ) | | |
505 | nxt6000_readreg( state, VIT_BER_0 ); | |
506 | ||
507 | nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18); // Clear BER Done interrupts | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
512 | static int nxt6000_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) | |
513 | { | |
b8742700 | 514 | struct nxt6000_state* state = fe->demodulator_priv; |
3a4a5711 JS |
515 | |
516 | *signal_strength = (short) (511 - | |
517 | (nxt6000_readreg(state, AGC_GAIN_1) + | |
518 | ((nxt6000_readreg(state, AGC_GAIN_2) & 0x03) << 8))); | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
115eea4e SO |
523 | static int nxt6000_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) |
524 | { | |
525 | tune->min_delay_ms = 500; | |
526 | return 0; | |
527 | } | |
528 | ||
605ee41c AQ |
529 | static int nxt6000_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) |
530 | { | |
531 | struct nxt6000_state* state = fe->demodulator_priv; | |
532 | ||
533 | if (enable) { | |
534 | return nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x01); | |
535 | } else { | |
536 | return nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x00); | |
537 | } | |
538 | } | |
539 | ||
1da177e4 LT |
540 | static struct dvb_frontend_ops nxt6000_ops; |
541 | ||
542 | struct dvb_frontend* nxt6000_attach(const struct nxt6000_config* config, | |
543 | struct i2c_adapter* i2c) | |
544 | { | |
545 | struct nxt6000_state* state = NULL; | |
546 | ||
547 | /* allocate memory for the internal state */ | |
084e24ac | 548 | state = kzalloc(sizeof(struct nxt6000_state), GFP_KERNEL); |
1da177e4 LT |
549 | if (state == NULL) goto error; |
550 | ||
551 | /* setup the state */ | |
552 | state->config = config; | |
553 | state->i2c = i2c; | |
1da177e4 LT |
554 | |
555 | /* check if the demod is there */ | |
556 | if (nxt6000_readreg(state, OFDM_MSC_REV) != NXT6000ASICDEVICE) goto error; | |
557 | ||
558 | /* create dvb_frontend */ | |
dea74869 | 559 | memcpy(&state->frontend.ops, &nxt6000_ops, sizeof(struct dvb_frontend_ops)); |
1da177e4 LT |
560 | state->frontend.demodulator_priv = state; |
561 | return &state->frontend; | |
562 | ||
563 | error: | |
564 | kfree(state); | |
565 | return NULL; | |
566 | } | |
567 | ||
568 | static struct dvb_frontend_ops nxt6000_ops = { | |
569 | ||
570 | .info = { | |
571 | .name = "NxtWave NXT6000 DVB-T", | |
572 | .type = FE_OFDM, | |
573 | .frequency_min = 0, | |
574 | .frequency_max = 863250000, | |
575 | .frequency_stepsize = 62500, | |
576 | /*.frequency_tolerance = *//* FIXME: 12% of SR */ | |
577 | .symbol_rate_min = 0, /* FIXME */ | |
578 | .symbol_rate_max = 9360000, /* FIXME */ | |
579 | .symbol_rate_tolerance = 4000, | |
580 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
50c25fff MK |
581 | FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | |
582 | FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO | | |
583 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
584 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | | |
585 | FE_CAN_HIERARCHY_AUTO, | |
1da177e4 LT |
586 | }, |
587 | ||
588 | .release = nxt6000_release, | |
589 | ||
590 | .init = nxt6000_init, | |
605ee41c | 591 | .i2c_gate_ctrl = nxt6000_i2c_gate_ctrl, |
1da177e4 | 592 | |
115eea4e SO |
593 | .get_tune_settings = nxt6000_fe_get_tune_settings, |
594 | ||
1da177e4 LT |
595 | .set_frontend = nxt6000_set_frontend, |
596 | ||
597 | .read_status = nxt6000_read_status, | |
3a4a5711 JS |
598 | .read_ber = nxt6000_read_ber, |
599 | .read_signal_strength = nxt6000_read_signal_strength, | |
600 | .read_snr = nxt6000_read_snr, | |
1da177e4 LT |
601 | }; |
602 | ||
603 | module_param(debug, int, 0644); | |
604 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | |
605 | ||
606 | MODULE_DESCRIPTION("NxtWave NXT6000 DVB-T demodulator driver"); | |
607 | MODULE_AUTHOR("Florian Schirmer"); | |
608 | MODULE_LICENSE("GPL"); | |
609 | ||
610 | EXPORT_SYMBOL(nxt6000_attach); |