Commit | Line | Data |
---|---|---|
265a6510 ST |
1 | /* |
2 | Auvitek AU8522 QAM/8VSB demodulator driver | |
3 | ||
6d897616 | 4 | Copyright (C) 2008 Steven Toth <stoth@linuxtv.org> |
265a6510 ST |
5 | |
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | ||
20 | */ | |
21 | ||
22 | #include <linux/kernel.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/string.h> | |
265a6510 ST |
26 | #include <linux/delay.h> |
27 | #include "dvb_frontend.h" | |
265a6510 | 28 | #include "au8522.h" |
0c44bf36 | 29 | #include "au8522_priv.h" |
265a6510 | 30 | |
18d73c58 MCC |
31 | static int debug; |
32 | ||
62899a28 DH |
33 | #define dprintk(arg...)\ |
34 | do { if (debug)\ | |
35 | printk(arg);\ | |
18d73c58 | 36 | } while (0) |
265a6510 | 37 | |
0daa5de7 | 38 | struct mse2snr_tab { |
f01699b4 ST |
39 | u16 val; |
40 | u16 data; | |
0daa5de7 MK |
41 | }; |
42 | ||
43 | /* VSB SNR lookup table */ | |
44 | static struct mse2snr_tab vsb_mse2snr_tab[] = { | |
f01699b4 ST |
45 | { 0, 270 }, |
46 | { 2, 250 }, | |
47 | { 3, 240 }, | |
48 | { 5, 230 }, | |
49 | { 7, 220 }, | |
50 | { 9, 210 }, | |
51 | { 12, 200 }, | |
52 | { 13, 195 }, | |
53 | { 15, 190 }, | |
54 | { 17, 185 }, | |
55 | { 19, 180 }, | |
56 | { 21, 175 }, | |
57 | { 24, 170 }, | |
58 | { 27, 165 }, | |
59 | { 31, 160 }, | |
60 | { 32, 158 }, | |
61 | { 33, 156 }, | |
62 | { 36, 152 }, | |
63 | { 37, 150 }, | |
64 | { 39, 148 }, | |
65 | { 40, 146 }, | |
66 | { 41, 144 }, | |
67 | { 43, 142 }, | |
68 | { 44, 140 }, | |
69 | { 48, 135 }, | |
70 | { 50, 130 }, | |
71 | { 43, 142 }, | |
72 | { 53, 125 }, | |
73 | { 56, 120 }, | |
74 | { 256, 115 }, | |
75 | }; | |
76 | ||
77 | /* QAM64 SNR lookup table */ | |
0daa5de7 | 78 | static struct mse2snr_tab qam64_mse2snr_tab[] = { |
f01699b4 ST |
79 | { 15, 0 }, |
80 | { 16, 290 }, | |
81 | { 17, 288 }, | |
82 | { 18, 286 }, | |
83 | { 19, 284 }, | |
84 | { 20, 282 }, | |
85 | { 21, 281 }, | |
86 | { 22, 279 }, | |
87 | { 23, 277 }, | |
88 | { 24, 275 }, | |
89 | { 25, 273 }, | |
90 | { 26, 271 }, | |
91 | { 27, 269 }, | |
92 | { 28, 268 }, | |
93 | { 29, 266 }, | |
94 | { 30, 264 }, | |
95 | { 31, 262 }, | |
96 | { 32, 260 }, | |
97 | { 33, 259 }, | |
98 | { 34, 258 }, | |
99 | { 35, 256 }, | |
100 | { 36, 255 }, | |
101 | { 37, 254 }, | |
102 | { 38, 252 }, | |
103 | { 39, 251 }, | |
104 | { 40, 250 }, | |
105 | { 41, 249 }, | |
106 | { 42, 248 }, | |
107 | { 43, 246 }, | |
108 | { 44, 245 }, | |
109 | { 45, 244 }, | |
110 | { 46, 242 }, | |
111 | { 47, 241 }, | |
112 | { 48, 240 }, | |
113 | { 50, 239 }, | |
114 | { 51, 238 }, | |
115 | { 53, 237 }, | |
116 | { 54, 236 }, | |
117 | { 56, 235 }, | |
118 | { 57, 234 }, | |
119 | { 59, 233 }, | |
120 | { 60, 232 }, | |
121 | { 62, 231 }, | |
122 | { 63, 230 }, | |
123 | { 65, 229 }, | |
124 | { 67, 228 }, | |
125 | { 68, 227 }, | |
126 | { 70, 226 }, | |
127 | { 71, 225 }, | |
128 | { 73, 224 }, | |
129 | { 74, 223 }, | |
130 | { 76, 222 }, | |
131 | { 78, 221 }, | |
132 | { 80, 220 }, | |
133 | { 82, 219 }, | |
134 | { 85, 218 }, | |
135 | { 88, 217 }, | |
136 | { 90, 216 }, | |
137 | { 92, 215 }, | |
138 | { 93, 214 }, | |
139 | { 94, 212 }, | |
140 | { 95, 211 }, | |
141 | { 97, 210 }, | |
142 | { 99, 209 }, | |
143 | { 101, 208 }, | |
144 | { 102, 207 }, | |
145 | { 104, 206 }, | |
146 | { 107, 205 }, | |
147 | { 111, 204 }, | |
148 | { 114, 203 }, | |
149 | { 118, 202 }, | |
150 | { 122, 201 }, | |
151 | { 125, 200 }, | |
152 | { 128, 199 }, | |
153 | { 130, 198 }, | |
154 | { 132, 197 }, | |
155 | { 256, 190 }, | |
156 | }; | |
157 | ||
158 | /* QAM256 SNR lookup table */ | |
0daa5de7 | 159 | static struct mse2snr_tab qam256_mse2snr_tab[] = { |
b0c4878e DH |
160 | { 15, 0 }, |
161 | { 16, 400 }, | |
162 | { 17, 398 }, | |
163 | { 18, 396 }, | |
164 | { 19, 394 }, | |
165 | { 20, 392 }, | |
166 | { 21, 390 }, | |
167 | { 22, 388 }, | |
168 | { 23, 386 }, | |
169 | { 24, 384 }, | |
170 | { 25, 382 }, | |
171 | { 26, 380 }, | |
172 | { 27, 379 }, | |
173 | { 28, 378 }, | |
174 | { 29, 377 }, | |
175 | { 30, 376 }, | |
176 | { 31, 375 }, | |
177 | { 32, 374 }, | |
178 | { 33, 373 }, | |
179 | { 34, 372 }, | |
180 | { 35, 371 }, | |
181 | { 36, 370 }, | |
182 | { 37, 362 }, | |
183 | { 38, 354 }, | |
184 | { 39, 346 }, | |
185 | { 40, 338 }, | |
186 | { 41, 330 }, | |
187 | { 42, 328 }, | |
188 | { 43, 326 }, | |
189 | { 44, 324 }, | |
190 | { 45, 322 }, | |
191 | { 46, 320 }, | |
192 | { 47, 319 }, | |
193 | { 48, 318 }, | |
194 | { 49, 317 }, | |
195 | { 50, 316 }, | |
196 | { 51, 315 }, | |
197 | { 52, 314 }, | |
198 | { 53, 313 }, | |
199 | { 54, 312 }, | |
200 | { 55, 311 }, | |
201 | { 56, 310 }, | |
202 | { 57, 308 }, | |
203 | { 58, 306 }, | |
204 | { 59, 304 }, | |
205 | { 60, 302 }, | |
206 | { 61, 300 }, | |
207 | { 62, 298 }, | |
f01699b4 ST |
208 | { 65, 295 }, |
209 | { 68, 294 }, | |
210 | { 70, 293 }, | |
211 | { 73, 292 }, | |
212 | { 76, 291 }, | |
213 | { 78, 290 }, | |
214 | { 79, 289 }, | |
215 | { 81, 288 }, | |
216 | { 82, 287 }, | |
217 | { 83, 286 }, | |
218 | { 84, 285 }, | |
219 | { 85, 284 }, | |
220 | { 86, 283 }, | |
221 | { 88, 282 }, | |
222 | { 89, 281 }, | |
223 | { 256, 280 }, | |
224 | }; | |
225 | ||
18d73c58 MCC |
226 | static int au8522_mse2snr_lookup(struct mse2snr_tab *tab, int sz, int mse, |
227 | u16 *snr) | |
f01699b4 ST |
228 | { |
229 | int i, ret = -EINVAL; | |
230 | dprintk("%s()\n", __func__); | |
231 | ||
0daa5de7 MK |
232 | for (i = 0; i < sz; i++) { |
233 | if (mse < tab[i].val) { | |
234 | *snr = tab[i].data; | |
f01699b4 ST |
235 | ret = 0; |
236 | break; | |
237 | } | |
238 | } | |
239 | dprintk("%s() snr=%d\n", __func__, *snr); | |
240 | return ret; | |
241 | } | |
242 | ||
2e7acd75 MK |
243 | static int au8522_set_if(struct dvb_frontend *fe, enum au8522_if_freq if_freq) |
244 | { | |
245 | struct au8522_state *state = fe->demodulator_priv; | |
df76de09 MK |
246 | u8 r0b5, r0b6, r0b7; |
247 | char *ifmhz; | |
2e7acd75 MK |
248 | |
249 | switch (if_freq) { | |
250 | case AU8522_IF_3_25MHZ: | |
df76de09 MK |
251 | ifmhz = "3.25"; |
252 | r0b5 = 0x00; | |
253 | r0b6 = 0x3d; | |
254 | r0b7 = 0xa0; | |
2e7acd75 MK |
255 | break; |
256 | case AU8522_IF_4MHZ: | |
df76de09 MK |
257 | ifmhz = "4.00"; |
258 | r0b5 = 0x00; | |
259 | r0b6 = 0x4b; | |
260 | r0b7 = 0xd9; | |
2e7acd75 MK |
261 | break; |
262 | case AU8522_IF_6MHZ: | |
df76de09 MK |
263 | ifmhz = "6.00"; |
264 | r0b5 = 0xfb; | |
265 | r0b6 = 0x8e; | |
266 | r0b7 = 0x39; | |
2e7acd75 MK |
267 | break; |
268 | default: | |
269 | dprintk("%s() IF Frequency not supported\n", __func__); | |
270 | return -EINVAL; | |
271 | } | |
df76de09 MK |
272 | dprintk("%s() %s MHz\n", __func__, ifmhz); |
273 | au8522_writereg(state, 0x80b5, r0b5); | |
274 | au8522_writereg(state, 0x80b6, r0b6); | |
275 | au8522_writereg(state, 0x80b7, r0b7); | |
276 | ||
2e7acd75 MK |
277 | return 0; |
278 | } | |
279 | ||
f01699b4 ST |
280 | /* VSB Modulation table */ |
281 | static struct { | |
282 | u16 reg; | |
283 | u16 data; | |
284 | } VSB_mod_tab[] = { | |
285 | { 0x8090, 0x84 }, | |
286 | { 0x4092, 0x11 }, | |
287 | { 0x2005, 0x00 }, | |
288 | { 0x8091, 0x80 }, | |
289 | { 0x80a3, 0x0c }, | |
290 | { 0x80a4, 0xe8 }, | |
291 | { 0x8081, 0xc4 }, | |
292 | { 0x80a5, 0x40 }, | |
293 | { 0x80a7, 0x40 }, | |
294 | { 0x80a6, 0x67 }, | |
295 | { 0x8262, 0x20 }, | |
296 | { 0x821c, 0x30 }, | |
297 | { 0x80d8, 0x1a }, | |
298 | { 0x8227, 0xa0 }, | |
299 | { 0x8121, 0xff }, | |
300 | { 0x80a8, 0xf0 }, | |
301 | { 0x80a9, 0x05 }, | |
302 | { 0x80aa, 0x77 }, | |
303 | { 0x80ab, 0xf0 }, | |
304 | { 0x80ac, 0x05 }, | |
305 | { 0x80ad, 0x77 }, | |
306 | { 0x80ae, 0x41 }, | |
307 | { 0x80af, 0x66 }, | |
308 | { 0x821b, 0xcc }, | |
309 | { 0x821d, 0x80 }, | |
f01699b4 ST |
310 | { 0x80a4, 0xe8 }, |
311 | { 0x8231, 0x13 }, | |
312 | }; | |
313 | ||
040d4cbf | 314 | /* QAM64 Modulation table */ |
f01699b4 ST |
315 | static struct { |
316 | u16 reg; | |
317 | u16 data; | |
040d4cbf FD |
318 | } QAM64_mod_tab[] = { |
319 | { 0x00a3, 0x09 }, | |
320 | { 0x00a4, 0x00 }, | |
321 | { 0x0081, 0xc4 }, | |
322 | { 0x00a5, 0x40 }, | |
323 | { 0x00aa, 0x77 }, | |
324 | { 0x00ad, 0x77 }, | |
325 | { 0x00a6, 0x67 }, | |
326 | { 0x0262, 0x20 }, | |
327 | { 0x021c, 0x30 }, | |
328 | { 0x00b8, 0x3e }, | |
329 | { 0x00b9, 0xf0 }, | |
330 | { 0x00ba, 0x01 }, | |
331 | { 0x00bb, 0x18 }, | |
332 | { 0x00bc, 0x50 }, | |
333 | { 0x00bd, 0x00 }, | |
334 | { 0x00be, 0xea }, | |
335 | { 0x00bf, 0xef }, | |
336 | { 0x00c0, 0xfc }, | |
337 | { 0x00c1, 0xbd }, | |
338 | { 0x00c2, 0x1f }, | |
339 | { 0x00c3, 0xfc }, | |
340 | { 0x00c4, 0xdd }, | |
341 | { 0x00c5, 0xaf }, | |
342 | { 0x00c6, 0x00 }, | |
343 | { 0x00c7, 0x38 }, | |
344 | { 0x00c8, 0x30 }, | |
345 | { 0x00c9, 0x05 }, | |
346 | { 0x00ca, 0x4a }, | |
347 | { 0x00cb, 0xd0 }, | |
348 | { 0x00cc, 0x01 }, | |
349 | { 0x00cd, 0xd9 }, | |
350 | { 0x00ce, 0x6f }, | |
351 | { 0x00cf, 0xf9 }, | |
352 | { 0x00d0, 0x70 }, | |
353 | { 0x00d1, 0xdf }, | |
354 | { 0x00d2, 0xf7 }, | |
355 | { 0x00d3, 0xc2 }, | |
356 | { 0x00d4, 0xdf }, | |
357 | { 0x00d5, 0x02 }, | |
358 | { 0x00d6, 0x9a }, | |
359 | { 0x00d7, 0xd0 }, | |
360 | { 0x0250, 0x0d }, | |
361 | { 0x0251, 0xcd }, | |
362 | { 0x0252, 0xe0 }, | |
363 | { 0x0253, 0x05 }, | |
364 | { 0x0254, 0xa7 }, | |
365 | { 0x0255, 0xff }, | |
366 | { 0x0256, 0xed }, | |
367 | { 0x0257, 0x5b }, | |
368 | { 0x0258, 0xae }, | |
369 | { 0x0259, 0xe6 }, | |
370 | { 0x025a, 0x3d }, | |
371 | { 0x025b, 0x0f }, | |
372 | { 0x025c, 0x0d }, | |
373 | { 0x025d, 0xea }, | |
374 | { 0x025e, 0xf2 }, | |
375 | { 0x025f, 0x51 }, | |
376 | { 0x0260, 0xf5 }, | |
377 | { 0x0261, 0x06 }, | |
378 | { 0x021a, 0x00 }, | |
379 | { 0x0546, 0x40 }, | |
380 | { 0x0210, 0xc7 }, | |
381 | { 0x0211, 0xaa }, | |
382 | { 0x0212, 0xab }, | |
383 | { 0x0213, 0x02 }, | |
384 | { 0x0502, 0x00 }, | |
385 | { 0x0121, 0x04 }, | |
386 | { 0x0122, 0x04 }, | |
387 | { 0x052e, 0x10 }, | |
388 | { 0x00a4, 0xca }, | |
389 | { 0x00a7, 0x40 }, | |
390 | { 0x0526, 0x01 }, | |
391 | }; | |
392 | ||
393 | /* QAM256 Modulation table */ | |
394 | static struct { | |
395 | u16 reg; | |
396 | u16 data; | |
397 | } QAM256_mod_tab[] = { | |
f01699b4 ST |
398 | { 0x80a3, 0x09 }, |
399 | { 0x80a4, 0x00 }, | |
400 | { 0x8081, 0xc4 }, | |
401 | { 0x80a5, 0x40 }, | |
f01699b4 ST |
402 | { 0x80aa, 0x77 }, |
403 | { 0x80ad, 0x77 }, | |
404 | { 0x80a6, 0x67 }, | |
405 | { 0x8262, 0x20 }, | |
406 | { 0x821c, 0x30 }, | |
407 | { 0x80b8, 0x3e }, | |
408 | { 0x80b9, 0xf0 }, | |
409 | { 0x80ba, 0x01 }, | |
410 | { 0x80bb, 0x18 }, | |
411 | { 0x80bc, 0x50 }, | |
412 | { 0x80bd, 0x00 }, | |
413 | { 0x80be, 0xea }, | |
414 | { 0x80bf, 0xef }, | |
415 | { 0x80c0, 0xfc }, | |
416 | { 0x80c1, 0xbd }, | |
417 | { 0x80c2, 0x1f }, | |
418 | { 0x80c3, 0xfc }, | |
419 | { 0x80c4, 0xdd }, | |
420 | { 0x80c5, 0xaf }, | |
421 | { 0x80c6, 0x00 }, | |
422 | { 0x80c7, 0x38 }, | |
423 | { 0x80c8, 0x30 }, | |
424 | { 0x80c9, 0x05 }, | |
425 | { 0x80ca, 0x4a }, | |
426 | { 0x80cb, 0xd0 }, | |
427 | { 0x80cc, 0x01 }, | |
428 | { 0x80cd, 0xd9 }, | |
429 | { 0x80ce, 0x6f }, | |
430 | { 0x80cf, 0xf9 }, | |
431 | { 0x80d0, 0x70 }, | |
432 | { 0x80d1, 0xdf }, | |
433 | { 0x80d2, 0xf7 }, | |
434 | { 0x80d3, 0xc2 }, | |
435 | { 0x80d4, 0xdf }, | |
436 | { 0x80d5, 0x02 }, | |
437 | { 0x80d6, 0x9a }, | |
438 | { 0x80d7, 0xd0 }, | |
439 | { 0x8250, 0x0d }, | |
440 | { 0x8251, 0xcd }, | |
441 | { 0x8252, 0xe0 }, | |
442 | { 0x8253, 0x05 }, | |
443 | { 0x8254, 0xa7 }, | |
444 | { 0x8255, 0xff }, | |
445 | { 0x8256, 0xed }, | |
446 | { 0x8257, 0x5b }, | |
447 | { 0x8258, 0xae }, | |
448 | { 0x8259, 0xe6 }, | |
449 | { 0x825a, 0x3d }, | |
450 | { 0x825b, 0x0f }, | |
451 | { 0x825c, 0x0d }, | |
452 | { 0x825d, 0xea }, | |
453 | { 0x825e, 0xf2 }, | |
454 | { 0x825f, 0x51 }, | |
455 | { 0x8260, 0xf5 }, | |
456 | { 0x8261, 0x06 }, | |
457 | { 0x821a, 0x00 }, | |
458 | { 0x8546, 0x40 }, | |
459 | { 0x8210, 0x26 }, | |
460 | { 0x8211, 0xf6 }, | |
461 | { 0x8212, 0x84 }, | |
462 | { 0x8213, 0x02 }, | |
463 | { 0x8502, 0x01 }, | |
464 | { 0x8121, 0x04 }, | |
465 | { 0x8122, 0x04 }, | |
466 | { 0x852e, 0x10 }, | |
467 | { 0x80a4, 0xca }, | |
468 | { 0x80a7, 0x40 }, | |
469 | { 0x8526, 0x01 }, | |
470 | }; | |
471 | ||
e059b0fa MK |
472 | static int au8522_enable_modulation(struct dvb_frontend *fe, |
473 | fe_modulation_t m) | |
265a6510 | 474 | { |
e059b0fa | 475 | struct au8522_state *state = fe->demodulator_priv; |
f01699b4 | 476 | int i; |
265a6510 | 477 | |
ce1719a6 | 478 | dprintk("%s(0x%08x)\n", __func__, m); |
265a6510 | 479 | |
18d73c58 | 480 | switch (m) { |
265a6510 | 481 | case VSB_8: |
ce1719a6 | 482 | dprintk("%s() VSB_8\n", __func__); |
f01699b4 ST |
483 | for (i = 0; i < ARRAY_SIZE(VSB_mod_tab); i++) |
484 | au8522_writereg(state, | |
485 | VSB_mod_tab[i].reg, | |
486 | VSB_mod_tab[i].data); | |
2e7acd75 | 487 | au8522_set_if(fe, state->config->vsb_if); |
265a6510 ST |
488 | break; |
489 | case QAM_64: | |
040d4cbf FD |
490 | dprintk("%s() QAM 64\n", __func__); |
491 | for (i = 0; i < ARRAY_SIZE(QAM64_mod_tab); i++) | |
492 | au8522_writereg(state, | |
493 | QAM64_mod_tab[i].reg, | |
494 | QAM64_mod_tab[i].data); | |
495 | au8522_set_if(fe, state->config->qam_if); | |
496 | break; | |
265a6510 | 497 | case QAM_256: |
040d4cbf FD |
498 | dprintk("%s() QAM 256\n", __func__); |
499 | for (i = 0; i < ARRAY_SIZE(QAM256_mod_tab); i++) | |
f01699b4 | 500 | au8522_writereg(state, |
040d4cbf FD |
501 | QAM256_mod_tab[i].reg, |
502 | QAM256_mod_tab[i].data); | |
2e7acd75 | 503 | au8522_set_if(fe, state->config->qam_if); |
265a6510 ST |
504 | break; |
505 | default: | |
ce1719a6 | 506 | dprintk("%s() Invalid modulation\n", __func__); |
265a6510 ST |
507 | return -EINVAL; |
508 | } | |
509 | ||
510 | state->current_modulation = m; | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | /* Talk to the demod, set the FEC, GUARD, QAM settings etc */ | |
9b6a132b | 516 | static int au8522_set_frontend(struct dvb_frontend *fe) |
265a6510 | 517 | { |
9b6a132b | 518 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
e059b0fa | 519 | struct au8522_state *state = fe->demodulator_priv; |
74d50724 | 520 | int ret = -EINVAL; |
265a6510 | 521 | |
9b6a132b | 522 | dprintk("%s(frequency=%d)\n", __func__, c->frequency); |
265a6510 | 523 | |
9b6a132b MCC |
524 | if ((state->current_frequency == c->frequency) && |
525 | (state->current_modulation == c->modulation)) | |
74d50724 | 526 | return 0; |
265a6510 | 527 | |
265a6510 | 528 | if (fe->ops.tuner_ops.set_params) { |
18d73c58 MCC |
529 | if (fe->ops.i2c_gate_ctrl) |
530 | fe->ops.i2c_gate_ctrl(fe, 1); | |
14d24d14 | 531 | ret = fe->ops.tuner_ops.set_params(fe); |
18d73c58 MCC |
532 | if (fe->ops.i2c_gate_ctrl) |
533 | fe->ops.i2c_gate_ctrl(fe, 0); | |
265a6510 ST |
534 | } |
535 | ||
74d50724 MK |
536 | if (ret < 0) |
537 | return ret; | |
538 | ||
ef3d2dc3 MK |
539 | /* Allow the tuner to settle */ |
540 | msleep(100); | |
541 | ||
542 | au8522_enable_modulation(fe, c->modulation); | |
543 | ||
9b6a132b | 544 | state->current_frequency = c->frequency; |
74d50724 | 545 | |
265a6510 ST |
546 | return 0; |
547 | } | |
548 | ||
e059b0fa | 549 | static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status) |
265a6510 | 550 | { |
e059b0fa | 551 | struct au8522_state *state = fe->demodulator_priv; |
265a6510 ST |
552 | u8 reg; |
553 | u32 tuner_status = 0; | |
554 | ||
555 | *status = 0; | |
556 | ||
557 | if (state->current_modulation == VSB_8) { | |
ce1719a6 | 558 | dprintk("%s() Checking VSB_8\n", __func__); |
265a6510 | 559 | reg = au8522_readreg(state, 0x4088); |
836c2858 ST |
560 | if ((reg & 0x03) == 0x03) |
561 | *status |= FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI; | |
265a6510 | 562 | } else { |
ce1719a6 | 563 | dprintk("%s() Checking QAM\n", __func__); |
265a6510 | 564 | reg = au8522_readreg(state, 0x4541); |
e059b0fa | 565 | if (reg & 0x80) |
265a6510 | 566 | *status |= FE_HAS_VITERBI; |
e059b0fa | 567 | if (reg & 0x20) |
265a6510 ST |
568 | *status |= FE_HAS_LOCK | FE_HAS_SYNC; |
569 | } | |
570 | ||
18d73c58 | 571 | switch (state->config->status_mode) { |
265a6510 | 572 | case AU8522_DEMODLOCKING: |
ce1719a6 | 573 | dprintk("%s() DEMODLOCKING\n", __func__); |
265a6510 ST |
574 | if (*status & FE_HAS_VITERBI) |
575 | *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; | |
576 | break; | |
577 | case AU8522_TUNERLOCKING: | |
578 | /* Get the tuner status */ | |
ce1719a6 | 579 | dprintk("%s() TUNERLOCKING\n", __func__); |
265a6510 ST |
580 | if (fe->ops.tuner_ops.get_status) { |
581 | if (fe->ops.i2c_gate_ctrl) | |
582 | fe->ops.i2c_gate_ctrl(fe, 1); | |
583 | ||
584 | fe->ops.tuner_ops.get_status(fe, &tuner_status); | |
585 | ||
586 | if (fe->ops.i2c_gate_ctrl) | |
587 | fe->ops.i2c_gate_ctrl(fe, 0); | |
588 | } | |
589 | if (tuner_status) | |
590 | *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; | |
591 | break; | |
592 | } | |
adeeac3b MK |
593 | state->fe_status = *status; |
594 | ||
595 | if (*status & FE_HAS_LOCK) | |
596 | /* turn on LED, if it isn't on already */ | |
597 | au8522_led_ctrl(state, -1); | |
598 | else | |
599 | /* turn off LED */ | |
600 | au8522_led_ctrl(state, 0); | |
265a6510 | 601 | |
ce1719a6 | 602 | dprintk("%s() status 0x%08x\n", __func__, *status); |
265a6510 ST |
603 | |
604 | return 0; | |
605 | } | |
606 | ||
adeeac3b MK |
607 | static int au8522_led_status(struct au8522_state *state, const u16 *snr) |
608 | { | |
609 | struct au8522_led_config *led_config = state->config->led_cfg; | |
610 | int led; | |
611 | u16 strong; | |
612 | ||
25985edc | 613 | /* bail out if we can't control an LED */ |
adeeac3b MK |
614 | if (!led_config) |
615 | return 0; | |
616 | ||
617 | if (0 == (state->fe_status & FE_HAS_LOCK)) | |
618 | return au8522_led_ctrl(state, 0); | |
619 | else if (state->current_modulation == QAM_256) | |
620 | strong = led_config->qam256_strong; | |
621 | else if (state->current_modulation == QAM_64) | |
622 | strong = led_config->qam64_strong; | |
623 | else /* (state->current_modulation == VSB_8) */ | |
624 | strong = led_config->vsb8_strong; | |
625 | ||
626 | if (*snr >= strong) | |
627 | led = 2; | |
628 | else | |
629 | led = 1; | |
630 | ||
631 | if ((state->led_state) && | |
632 | (((strong < *snr) ? (*snr - strong) : (strong - *snr)) <= 10)) | |
633 | /* snr didn't change enough to bother | |
634 | * changing the color of the led */ | |
635 | return 0; | |
636 | ||
637 | return au8522_led_ctrl(state, led); | |
638 | } | |
639 | ||
f01699b4 | 640 | static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr) |
fb8152cb MK |
641 | { |
642 | struct au8522_state *state = fe->demodulator_priv; | |
f01699b4 | 643 | int ret = -EINVAL; |
fb8152cb | 644 | |
ce1719a6 | 645 | dprintk("%s()\n", __func__); |
265a6510 | 646 | |
f01699b4 | 647 | if (state->current_modulation == QAM_256) |
0daa5de7 MK |
648 | ret = au8522_mse2snr_lookup(qam256_mse2snr_tab, |
649 | ARRAY_SIZE(qam256_mse2snr_tab), | |
650 | au8522_readreg(state, 0x4522), | |
651 | snr); | |
f01699b4 | 652 | else if (state->current_modulation == QAM_64) |
0daa5de7 MK |
653 | ret = au8522_mse2snr_lookup(qam64_mse2snr_tab, |
654 | ARRAY_SIZE(qam64_mse2snr_tab), | |
655 | au8522_readreg(state, 0x4522), | |
656 | snr); | |
f01699b4 | 657 | else /* VSB_8 */ |
0daa5de7 MK |
658 | ret = au8522_mse2snr_lookup(vsb_mse2snr_tab, |
659 | ARRAY_SIZE(vsb_mse2snr_tab), | |
660 | au8522_readreg(state, 0x4311), | |
661 | snr); | |
f01699b4 | 662 | |
adeeac3b MK |
663 | if (state->config->led_cfg) |
664 | au8522_led_status(state, snr); | |
665 | ||
f01699b4 | 666 | return ret; |
265a6510 ST |
667 | } |
668 | ||
e059b0fa MK |
669 | static int au8522_read_signal_strength(struct dvb_frontend *fe, |
670 | u16 *signal_strength) | |
265a6510 | 671 | { |
5279b1ff MK |
672 | /* borrowed from lgdt330x.c |
673 | * | |
674 | * Calculate strength from SNR up to 35dB | |
675 | * Even though the SNR can go higher than 35dB, | |
676 | * there is some comfort factor in having a range of | |
677 | * strong signals that can show at 100% | |
678 | */ | |
679 | u16 snr; | |
680 | u32 tmp; | |
681 | int ret = au8522_read_snr(fe, &snr); | |
682 | ||
683 | *signal_strength = 0; | |
684 | ||
685 | if (0 == ret) { | |
686 | /* The following calculation method was chosen | |
687 | * purely for the sake of code re-use from the | |
688 | * other demod drivers that use this method */ | |
689 | ||
690 | /* Convert from SNR in dB * 10 to 8.24 fixed-point */ | |
691 | tmp = (snr * ((1 << 24) / 10)); | |
692 | ||
693 | /* Convert from 8.24 fixed-point to | |
694 | * scale the range 0 - 35*2^24 into 0 - 65535*/ | |
695 | if (tmp >= 8960 * 0x10000) | |
696 | *signal_strength = 0xffff; | |
697 | else | |
698 | *signal_strength = tmp / 8960; | |
699 | } | |
700 | ||
701 | return ret; | |
265a6510 ST |
702 | } |
703 | ||
e059b0fa | 704 | static int au8522_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
265a6510 | 705 | { |
e059b0fa | 706 | struct au8522_state *state = fe->demodulator_priv; |
265a6510 | 707 | |
8973dc4b MK |
708 | if (state->current_modulation == VSB_8) |
709 | *ucblocks = au8522_readreg(state, 0x4087); | |
710 | else | |
711 | *ucblocks = au8522_readreg(state, 0x4543); | |
265a6510 ST |
712 | |
713 | return 0; | |
714 | } | |
715 | ||
e059b0fa | 716 | static int au8522_read_ber(struct dvb_frontend *fe, u32 *ber) |
265a6510 ST |
717 | { |
718 | return au8522_read_ucblocks(fe, ber); | |
719 | } | |
720 | ||
7c61d80a | 721 | static int au8522_get_frontend(struct dvb_frontend *fe) |
265a6510 | 722 | { |
7c61d80a | 723 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
e059b0fa | 724 | struct au8522_state *state = fe->demodulator_priv; |
265a6510 | 725 | |
9b6a132b MCC |
726 | c->frequency = state->current_frequency; |
727 | c->modulation = state->current_modulation; | |
265a6510 ST |
728 | |
729 | return 0; | |
730 | } | |
731 | ||
e059b0fa MK |
732 | static int au8522_get_tune_settings(struct dvb_frontend *fe, |
733 | struct dvb_frontend_tune_settings *tune) | |
265a6510 ST |
734 | { |
735 | tune->min_delay_ms = 1000; | |
736 | return 0; | |
737 | } | |
738 | ||
209fdf66 DH |
739 | static struct dvb_frontend_ops au8522_ops; |
740 | ||
209fdf66 | 741 | |
e059b0fa | 742 | static void au8522_release(struct dvb_frontend *fe) |
265a6510 | 743 | { |
e059b0fa | 744 | struct au8522_state *state = fe->demodulator_priv; |
209fdf66 | 745 | au8522_release_state(state); |
265a6510 ST |
746 | } |
747 | ||
e059b0fa MK |
748 | struct dvb_frontend *au8522_attach(const struct au8522_config *config, |
749 | struct i2c_adapter *i2c) | |
265a6510 | 750 | { |
e059b0fa | 751 | struct au8522_state *state = NULL; |
209fdf66 | 752 | int instance; |
265a6510 ST |
753 | |
754 | /* allocate memory for the internal state */ | |
209fdf66 DH |
755 | instance = au8522_get_state(&state, i2c, config->demod_address); |
756 | switch (instance) { | |
757 | case 0: | |
758 | dprintk("%s state allocation failed\n", __func__); | |
759 | break; | |
760 | case 1: | |
761 | /* new demod instance */ | |
762 | dprintk("%s using new instance\n", __func__); | |
763 | break; | |
764 | default: | |
765 | /* existing demod instance */ | |
766 | dprintk("%s using existing instance\n", __func__); | |
767 | break; | |
768 | } | |
265a6510 ST |
769 | |
770 | /* setup the state */ | |
771 | state->config = config; | |
772 | state->i2c = i2c; | |
7f2c983c DH |
773 | state->operational_mode = AU8522_DIGITAL_MODE; |
774 | ||
265a6510 ST |
775 | /* create dvb_frontend */ |
776 | memcpy(&state->frontend.ops, &au8522_ops, | |
777 | sizeof(struct dvb_frontend_ops)); | |
778 | state->frontend.demodulator_priv = state; | |
779 | ||
4a03dafc DH |
780 | state->frontend.ops.analog_ops.i2c_gate_ctrl = au8522_analog_i2c_gate_ctrl; |
781 | ||
265a6510 ST |
782 | if (au8522_init(&state->frontend) != 0) { |
783 | printk(KERN_ERR "%s: Failed to initialize correctly\n", | |
ce1719a6 | 784 | __func__); |
265a6510 ST |
785 | goto error; |
786 | } | |
787 | ||
788 | /* Note: Leaving the I2C gate open here. */ | |
789 | au8522_i2c_gate_ctrl(&state->frontend, 1); | |
790 | ||
791 | return &state->frontend; | |
792 | ||
793 | error: | |
209fdf66 | 794 | au8522_release_state(state); |
265a6510 ST |
795 | return NULL; |
796 | } | |
18d73c58 | 797 | EXPORT_SYMBOL(au8522_attach); |
265a6510 ST |
798 | |
799 | static struct dvb_frontend_ops au8522_ops = { | |
9b6a132b | 800 | .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, |
265a6510 ST |
801 | .info = { |
802 | .name = "Auvitek AU8522 QAM/8VSB Frontend", | |
265a6510 ST |
803 | .frequency_min = 54000000, |
804 | .frequency_max = 858000000, | |
805 | .frequency_stepsize = 62500, | |
806 | .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB | |
807 | }, | |
808 | ||
809 | .init = au8522_init, | |
74d50724 | 810 | .sleep = au8522_sleep, |
265a6510 | 811 | .i2c_gate_ctrl = au8522_i2c_gate_ctrl, |
9b6a132b MCC |
812 | .set_frontend = au8522_set_frontend, |
813 | .get_frontend = au8522_get_frontend, | |
265a6510 ST |
814 | .get_tune_settings = au8522_get_tune_settings, |
815 | .read_status = au8522_read_status, | |
816 | .read_ber = au8522_read_ber, | |
817 | .read_signal_strength = au8522_read_signal_strength, | |
818 | .read_snr = au8522_read_snr, | |
819 | .read_ucblocks = au8522_read_ucblocks, | |
820 | .release = au8522_release, | |
821 | }; | |
822 | ||
823 | module_param(debug, int, 0644); | |
824 | MODULE_PARM_DESC(debug, "Enable verbose debug messages"); | |
825 | ||
826 | MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver"); | |
827 | MODULE_AUTHOR("Steven Toth"); | |
828 | MODULE_LICENSE("GPL"); |