Commit | Line | Data |
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b9ede79a MCC |
1 | /* |
2 | * Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver | |
3 | * | |
4 | * Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com> | |
5 | * Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com> | |
6 | * | |
7 | * FIXME: Need to port to DVB v5.2 API | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation version 2. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <asm/div64.h> | |
21 | ||
22 | #include "dvb_frontend.h" | |
23 | #include "mb86a20s.h" | |
24 | ||
25 | static int debug = 1; | |
26 | module_param(debug, int, 0644); | |
27 | MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); | |
28 | ||
29 | #define rc(args...) do { \ | |
30 | printk(KERN_ERR "mb86a20s: " args); \ | |
31 | } while (0) | |
32 | ||
33 | #define dprintk(args...) \ | |
34 | do { \ | |
35 | if (debug) { \ | |
36 | printk(KERN_DEBUG "mb86a20s: %s: ", __func__); \ | |
37 | printk(args); \ | |
38 | } \ | |
39 | } while (0) | |
40 | ||
41 | struct mb86a20s_state { | |
42 | struct i2c_adapter *i2c; | |
43 | const struct mb86a20s_config *config; | |
44 | ||
45 | struct dvb_frontend frontend; | |
c736a5f2 MCC |
46 | |
47 | bool need_init; | |
b9ede79a MCC |
48 | }; |
49 | ||
50 | struct regdata { | |
51 | u8 reg; | |
52 | u8 data; | |
53 | }; | |
54 | ||
55 | /* | |
56 | * Initialization sequence: Use whatevere default values that PV SBTVD | |
57 | * does on its initialisation, obtained via USB snoop | |
58 | */ | |
59 | static struct regdata mb86a20s_init[] = { | |
60 | { 0x70, 0x0f }, | |
61 | { 0x70, 0xff }, | |
62 | { 0x08, 0x01 }, | |
63 | { 0x09, 0x3e }, | |
64 | { 0x50, 0xd1 }, | |
65 | { 0x51, 0x22 }, | |
66 | { 0x39, 0x01 }, | |
67 | { 0x71, 0x00 }, | |
68 | { 0x28, 0x2a }, | |
69 | { 0x29, 0x00 }, | |
70 | { 0x2a, 0xff }, | |
71 | { 0x2b, 0x80 }, | |
72 | { 0x28, 0x20 }, | |
73 | { 0x29, 0x33 }, | |
74 | { 0x2a, 0xdf }, | |
75 | { 0x2b, 0xa9 }, | |
76 | { 0x3b, 0x21 }, | |
77 | { 0x3c, 0x3a }, | |
78 | { 0x01, 0x0d }, | |
79 | { 0x04, 0x08 }, | |
80 | { 0x05, 0x05 }, | |
81 | { 0x04, 0x0e }, | |
82 | { 0x05, 0x00 }, | |
83 | { 0x04, 0x0f }, | |
84 | { 0x05, 0x14 }, | |
85 | { 0x04, 0x0b }, | |
86 | { 0x05, 0x8c }, | |
87 | { 0x04, 0x00 }, | |
88 | { 0x05, 0x00 }, | |
89 | { 0x04, 0x01 }, | |
90 | { 0x05, 0x07 }, | |
91 | { 0x04, 0x02 }, | |
92 | { 0x05, 0x0f }, | |
93 | { 0x04, 0x03 }, | |
94 | { 0x05, 0xa0 }, | |
95 | { 0x04, 0x09 }, | |
96 | { 0x05, 0x00 }, | |
97 | { 0x04, 0x0a }, | |
98 | { 0x05, 0xff }, | |
99 | { 0x04, 0x27 }, | |
100 | { 0x05, 0x64 }, | |
101 | { 0x04, 0x28 }, | |
102 | { 0x05, 0x00 }, | |
103 | { 0x04, 0x1e }, | |
104 | { 0x05, 0xff }, | |
105 | { 0x04, 0x29 }, | |
106 | { 0x05, 0x0a }, | |
107 | { 0x04, 0x32 }, | |
108 | { 0x05, 0x0a }, | |
109 | { 0x04, 0x14 }, | |
110 | { 0x05, 0x02 }, | |
111 | { 0x04, 0x04 }, | |
112 | { 0x05, 0x00 }, | |
113 | { 0x04, 0x05 }, | |
114 | { 0x05, 0x22 }, | |
115 | { 0x04, 0x06 }, | |
116 | { 0x05, 0x0e }, | |
117 | { 0x04, 0x07 }, | |
118 | { 0x05, 0xd8 }, | |
119 | { 0x04, 0x12 }, | |
120 | { 0x05, 0x00 }, | |
121 | { 0x04, 0x13 }, | |
122 | { 0x05, 0xff }, | |
123 | { 0x52, 0x01 }, | |
124 | { 0x50, 0xa7 }, | |
125 | { 0x51, 0x00 }, | |
126 | { 0x50, 0xa8 }, | |
127 | { 0x51, 0xff }, | |
128 | { 0x50, 0xa9 }, | |
129 | { 0x51, 0xff }, | |
130 | { 0x50, 0xaa }, | |
131 | { 0x51, 0x00 }, | |
132 | { 0x50, 0xab }, | |
133 | { 0x51, 0xff }, | |
134 | { 0x50, 0xac }, | |
135 | { 0x51, 0xff }, | |
136 | { 0x50, 0xad }, | |
137 | { 0x51, 0x00 }, | |
138 | { 0x50, 0xae }, | |
139 | { 0x51, 0xff }, | |
140 | { 0x50, 0xaf }, | |
141 | { 0x51, 0xff }, | |
142 | { 0x5e, 0x07 }, | |
143 | { 0x50, 0xdc }, | |
144 | { 0x51, 0x01 }, | |
145 | { 0x50, 0xdd }, | |
146 | { 0x51, 0xf4 }, | |
147 | { 0x50, 0xde }, | |
148 | { 0x51, 0x01 }, | |
149 | { 0x50, 0xdf }, | |
150 | { 0x51, 0xf4 }, | |
151 | { 0x50, 0xe0 }, | |
152 | { 0x51, 0x01 }, | |
153 | { 0x50, 0xe1 }, | |
154 | { 0x51, 0xf4 }, | |
155 | { 0x50, 0xb0 }, | |
156 | { 0x51, 0x07 }, | |
157 | { 0x50, 0xb2 }, | |
158 | { 0x51, 0xff }, | |
159 | { 0x50, 0xb3 }, | |
160 | { 0x51, 0xff }, | |
161 | { 0x50, 0xb4 }, | |
162 | { 0x51, 0xff }, | |
163 | { 0x50, 0xb5 }, | |
164 | { 0x51, 0xff }, | |
165 | { 0x50, 0xb6 }, | |
166 | { 0x51, 0xff }, | |
167 | { 0x50, 0xb7 }, | |
168 | { 0x51, 0xff }, | |
169 | { 0x50, 0x50 }, | |
170 | { 0x51, 0x02 }, | |
171 | { 0x50, 0x51 }, | |
172 | { 0x51, 0x04 }, | |
173 | { 0x45, 0x04 }, | |
174 | { 0x48, 0x04 }, | |
175 | { 0x50, 0xd5 }, | |
7572f9c5 | 176 | { 0x51, 0x01 }, /* Serial */ |
b9ede79a MCC |
177 | { 0x50, 0xd6 }, |
178 | { 0x51, 0x1f }, | |
179 | { 0x50, 0xd2 }, | |
180 | { 0x51, 0x03 }, | |
181 | { 0x50, 0xd7 }, | |
182 | { 0x51, 0x3f }, | |
183 | { 0x1c, 0x01 }, | |
184 | { 0x28, 0x06 }, | |
185 | { 0x29, 0x00 }, | |
186 | { 0x2a, 0x00 }, | |
187 | { 0x2b, 0x03 }, | |
188 | { 0x28, 0x07 }, | |
189 | { 0x29, 0x00 }, | |
190 | { 0x2a, 0x00 }, | |
191 | { 0x2b, 0x0d }, | |
192 | { 0x28, 0x08 }, | |
193 | { 0x29, 0x00 }, | |
194 | { 0x2a, 0x00 }, | |
195 | { 0x2b, 0x02 }, | |
196 | { 0x28, 0x09 }, | |
197 | { 0x29, 0x00 }, | |
198 | { 0x2a, 0x00 }, | |
199 | { 0x2b, 0x01 }, | |
200 | { 0x28, 0x0a }, | |
201 | { 0x29, 0x00 }, | |
202 | { 0x2a, 0x00 }, | |
203 | { 0x2b, 0x21 }, | |
204 | { 0x28, 0x0b }, | |
205 | { 0x29, 0x00 }, | |
206 | { 0x2a, 0x00 }, | |
207 | { 0x2b, 0x29 }, | |
208 | { 0x28, 0x0c }, | |
209 | { 0x29, 0x00 }, | |
210 | { 0x2a, 0x00 }, | |
211 | { 0x2b, 0x16 }, | |
212 | { 0x28, 0x0d }, | |
213 | { 0x29, 0x00 }, | |
214 | { 0x2a, 0x00 }, | |
215 | { 0x2b, 0x31 }, | |
216 | { 0x28, 0x0e }, | |
217 | { 0x29, 0x00 }, | |
218 | { 0x2a, 0x00 }, | |
219 | { 0x2b, 0x0e }, | |
220 | { 0x28, 0x0f }, | |
221 | { 0x29, 0x00 }, | |
222 | { 0x2a, 0x00 }, | |
223 | { 0x2b, 0x4e }, | |
224 | { 0x28, 0x10 }, | |
225 | { 0x29, 0x00 }, | |
226 | { 0x2a, 0x00 }, | |
227 | { 0x2b, 0x46 }, | |
228 | { 0x28, 0x11 }, | |
229 | { 0x29, 0x00 }, | |
230 | { 0x2a, 0x00 }, | |
231 | { 0x2b, 0x0f }, | |
232 | { 0x28, 0x12 }, | |
233 | { 0x29, 0x00 }, | |
234 | { 0x2a, 0x00 }, | |
235 | { 0x2b, 0x56 }, | |
236 | { 0x28, 0x13 }, | |
237 | { 0x29, 0x00 }, | |
238 | { 0x2a, 0x00 }, | |
239 | { 0x2b, 0x35 }, | |
240 | { 0x28, 0x14 }, | |
241 | { 0x29, 0x00 }, | |
242 | { 0x2a, 0x01 }, | |
243 | { 0x2b, 0xbe }, | |
244 | { 0x28, 0x15 }, | |
245 | { 0x29, 0x00 }, | |
246 | { 0x2a, 0x01 }, | |
247 | { 0x2b, 0x84 }, | |
248 | { 0x28, 0x16 }, | |
249 | { 0x29, 0x00 }, | |
250 | { 0x2a, 0x03 }, | |
251 | { 0x2b, 0xee }, | |
252 | { 0x28, 0x17 }, | |
253 | { 0x29, 0x00 }, | |
254 | { 0x2a, 0x00 }, | |
255 | { 0x2b, 0x98 }, | |
256 | { 0x28, 0x18 }, | |
257 | { 0x29, 0x00 }, | |
258 | { 0x2a, 0x00 }, | |
259 | { 0x2b, 0x9f }, | |
260 | { 0x28, 0x19 }, | |
261 | { 0x29, 0x00 }, | |
262 | { 0x2a, 0x07 }, | |
263 | { 0x2b, 0xb2 }, | |
264 | { 0x28, 0x1a }, | |
265 | { 0x29, 0x00 }, | |
266 | { 0x2a, 0x06 }, | |
267 | { 0x2b, 0xc2 }, | |
268 | { 0x28, 0x1b }, | |
269 | { 0x29, 0x00 }, | |
270 | { 0x2a, 0x07 }, | |
271 | { 0x2b, 0x4a }, | |
272 | { 0x28, 0x1c }, | |
273 | { 0x29, 0x00 }, | |
274 | { 0x2a, 0x01 }, | |
275 | { 0x2b, 0xbc }, | |
276 | { 0x28, 0x1d }, | |
277 | { 0x29, 0x00 }, | |
278 | { 0x2a, 0x04 }, | |
279 | { 0x2b, 0xba }, | |
280 | { 0x28, 0x1e }, | |
281 | { 0x29, 0x00 }, | |
282 | { 0x2a, 0x06 }, | |
283 | { 0x2b, 0x14 }, | |
284 | { 0x50, 0x1e }, | |
285 | { 0x51, 0x5d }, | |
286 | { 0x50, 0x22 }, | |
287 | { 0x51, 0x00 }, | |
288 | { 0x50, 0x23 }, | |
289 | { 0x51, 0xc8 }, | |
290 | { 0x50, 0x24 }, | |
291 | { 0x51, 0x00 }, | |
292 | { 0x50, 0x25 }, | |
293 | { 0x51, 0xf0 }, | |
294 | { 0x50, 0x26 }, | |
295 | { 0x51, 0x00 }, | |
296 | { 0x50, 0x27 }, | |
297 | { 0x51, 0xc3 }, | |
298 | { 0x50, 0x39 }, | |
299 | { 0x51, 0x02 }, | |
300 | { 0x50, 0xd5 }, | |
301 | { 0x51, 0x01 }, | |
302 | { 0xd0, 0x00 }, | |
303 | }; | |
304 | ||
305 | static struct regdata mb86a20s_reset_reception[] = { | |
306 | { 0x70, 0xf0 }, | |
307 | { 0x70, 0xff }, | |
308 | { 0x08, 0x01 }, | |
309 | { 0x08, 0x00 }, | |
310 | }; | |
311 | ||
312 | static int mb86a20s_i2c_writereg(struct mb86a20s_state *state, | |
313 | u8 i2c_addr, int reg, int data) | |
314 | { | |
315 | u8 buf[] = { reg, data }; | |
316 | struct i2c_msg msg = { | |
317 | .addr = i2c_addr, .flags = 0, .buf = buf, .len = 2 | |
318 | }; | |
319 | int rc; | |
320 | ||
321 | rc = i2c_transfer(state->i2c, &msg, 1); | |
322 | if (rc != 1) { | |
7570800c | 323 | printk("%s: writereg error (rc == %i, reg == 0x%02x," |
b9ede79a MCC |
324 | " data == 0x%02x)\n", __func__, rc, reg, data); |
325 | return rc; | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state, | |
332 | u8 i2c_addr, struct regdata *rd, int size) | |
333 | { | |
334 | int i, rc; | |
335 | ||
336 | for (i = 0; i < size; i++) { | |
337 | rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg, | |
338 | rd[i].data); | |
339 | if (rc < 0) | |
340 | return rc; | |
341 | } | |
342 | return 0; | |
343 | } | |
344 | ||
345 | static int mb86a20s_i2c_readreg(struct mb86a20s_state *state, | |
346 | u8 i2c_addr, u8 reg) | |
347 | { | |
348 | u8 val; | |
349 | int rc; | |
350 | struct i2c_msg msg[] = { | |
351 | { .addr = i2c_addr, .flags = 0, .buf = ®, .len = 1 }, | |
352 | { .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 } | |
353 | }; | |
354 | ||
355 | rc = i2c_transfer(state->i2c, msg, 2); | |
356 | ||
357 | if (rc != 2) { | |
7570800c | 358 | rc("%s: reg=0x%x (error=%d)\n", __func__, reg, rc); |
b9ede79a MCC |
359 | return rc; |
360 | } | |
361 | ||
362 | return val; | |
363 | } | |
364 | ||
365 | #define mb86a20s_readreg(state, reg) \ | |
366 | mb86a20s_i2c_readreg(state, state->config->demod_address, reg) | |
367 | #define mb86a20s_writereg(state, reg, val) \ | |
368 | mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val) | |
369 | #define mb86a20s_writeregdata(state, regdata) \ | |
370 | mb86a20s_i2c_writeregdata(state, state->config->demod_address, \ | |
371 | regdata, ARRAY_SIZE(regdata)) | |
372 | ||
373 | static int mb86a20s_initfe(struct dvb_frontend *fe) | |
374 | { | |
375 | struct mb86a20s_state *state = fe->demodulator_priv; | |
376 | int rc; | |
7572f9c5 | 377 | u8 regD5 = 1; |
b9ede79a MCC |
378 | |
379 | dprintk("\n"); | |
380 | ||
68541cda MCC |
381 | if (fe->ops.i2c_gate_ctrl) |
382 | fe->ops.i2c_gate_ctrl(fe, 0); | |
383 | ||
b9ede79a MCC |
384 | /* Initialize the frontend */ |
385 | rc = mb86a20s_writeregdata(state, mb86a20s_init); | |
386 | if (rc < 0) | |
c736a5f2 | 387 | goto err; |
b9ede79a | 388 | |
7572f9c5 MCC |
389 | if (!state->config->is_serial) { |
390 | regD5 &= ~1; | |
391 | ||
392 | rc = mb86a20s_writereg(state, 0x50, 0xd5); | |
393 | if (rc < 0) | |
c736a5f2 | 394 | goto err; |
7572f9c5 MCC |
395 | rc = mb86a20s_writereg(state, 0x51, regD5); |
396 | if (rc < 0) | |
c736a5f2 | 397 | goto err; |
7572f9c5 MCC |
398 | } |
399 | ||
68541cda MCC |
400 | if (fe->ops.i2c_gate_ctrl) |
401 | fe->ops.i2c_gate_ctrl(fe, 1); | |
402 | ||
c736a5f2 MCC |
403 | err: |
404 | if (rc < 0) { | |
405 | state->need_init = true; | |
406 | printk(KERN_INFO "mb86a20s: Init failed. Will try again later\n"); | |
407 | } else { | |
408 | state->need_init = false; | |
25985edc | 409 | dprintk("Initialization succeeded.\n"); |
c736a5f2 MCC |
410 | } |
411 | return rc; | |
b9ede79a MCC |
412 | } |
413 | ||
414 | static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength) | |
415 | { | |
416 | struct mb86a20s_state *state = fe->demodulator_priv; | |
417 | unsigned rf_max, rf_min, rf; | |
418 | u8 val; | |
419 | ||
420 | dprintk("\n"); | |
421 | ||
68541cda MCC |
422 | if (fe->ops.i2c_gate_ctrl) |
423 | fe->ops.i2c_gate_ctrl(fe, 0); | |
424 | ||
b9ede79a MCC |
425 | /* Does a binary search to get RF strength */ |
426 | rf_max = 0xfff; | |
427 | rf_min = 0; | |
428 | do { | |
429 | rf = (rf_max + rf_min) / 2; | |
430 | mb86a20s_writereg(state, 0x04, 0x1f); | |
431 | mb86a20s_writereg(state, 0x05, rf >> 8); | |
432 | mb86a20s_writereg(state, 0x04, 0x20); | |
433 | mb86a20s_writereg(state, 0x04, rf); | |
434 | ||
435 | val = mb86a20s_readreg(state, 0x02); | |
436 | if (val & 0x08) | |
437 | rf_min = (rf_max + rf_min) / 2; | |
438 | else | |
439 | rf_max = (rf_max + rf_min) / 2; | |
440 | if (rf_max - rf_min < 4) { | |
441 | *strength = (((rf_max + rf_min) / 2) * 65535) / 4095; | |
442 | break; | |
443 | } | |
444 | } while (1); | |
445 | ||
446 | dprintk("signal strength = %d\n", *strength); | |
447 | ||
68541cda MCC |
448 | if (fe->ops.i2c_gate_ctrl) |
449 | fe->ops.i2c_gate_ctrl(fe, 1); | |
450 | ||
b9ede79a MCC |
451 | return 0; |
452 | } | |
453 | ||
454 | static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status) | |
455 | { | |
456 | struct mb86a20s_state *state = fe->demodulator_priv; | |
457 | u8 val; | |
458 | ||
459 | dprintk("\n"); | |
460 | *status = 0; | |
461 | ||
68541cda MCC |
462 | if (fe->ops.i2c_gate_ctrl) |
463 | fe->ops.i2c_gate_ctrl(fe, 0); | |
b9ede79a | 464 | val = mb86a20s_readreg(state, 0x0a) & 0xf; |
68541cda MCC |
465 | if (fe->ops.i2c_gate_ctrl) |
466 | fe->ops.i2c_gate_ctrl(fe, 1); | |
b9ede79a MCC |
467 | |
468 | if (val >= 2) | |
469 | *status |= FE_HAS_SIGNAL; | |
470 | ||
471 | if (val >= 4) | |
472 | *status |= FE_HAS_CARRIER; | |
473 | ||
474 | if (val >= 5) | |
475 | *status |= FE_HAS_VITERBI; | |
476 | ||
477 | if (val >= 7) | |
478 | *status |= FE_HAS_SYNC; | |
479 | ||
480 | if (val >= 8) /* Maybe 9? */ | |
481 | *status |= FE_HAS_LOCK; | |
482 | ||
483 | dprintk("val = %d, status = 0x%02x\n", val, *status); | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | static int mb86a20s_set_frontend(struct dvb_frontend *fe, | |
489 | struct dvb_frontend_parameters *p) | |
490 | { | |
491 | struct mb86a20s_state *state = fe->demodulator_priv; | |
492 | int rc; | |
493 | ||
494 | dprintk("\n"); | |
495 | ||
68541cda MCC |
496 | if (fe->ops.i2c_gate_ctrl) |
497 | fe->ops.i2c_gate_ctrl(fe, 1); | |
c736a5f2 | 498 | dprintk("Calling tuner set parameters\n"); |
b9ede79a | 499 | fe->ops.tuner_ops.set_params(fe, p); |
68541cda | 500 | |
c736a5f2 MCC |
501 | /* |
502 | * Make it more reliable: if, for some reason, the initial | |
503 | * device initialization doesn't happen, initialize it when | |
504 | * a SBTVD parameters are adjusted. | |
505 | * | |
506 | * Unfortunately, due to a hard to track bug at tda829x/tda18271, | |
507 | * the agc callback logic is not called during DVB attach time, | |
508 | * causing mb86a20s to not be initialized with Kworld SBTVD. | |
509 | * So, this hack is needed, in order to make Kworld SBTVD to work. | |
510 | */ | |
511 | if (state->need_init) | |
512 | mb86a20s_initfe(fe); | |
513 | ||
68541cda MCC |
514 | if (fe->ops.i2c_gate_ctrl) |
515 | fe->ops.i2c_gate_ctrl(fe, 0); | |
b9ede79a | 516 | rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception); |
68541cda MCC |
517 | if (fe->ops.i2c_gate_ctrl) |
518 | fe->ops.i2c_gate_ctrl(fe, 1); | |
b9ede79a MCC |
519 | |
520 | return rc; | |
521 | } | |
522 | ||
523 | static int mb86a20s_get_frontend(struct dvb_frontend *fe, | |
524 | struct dvb_frontend_parameters *p) | |
525 | { | |
526 | ||
527 | /* FIXME: For now, it does nothing */ | |
528 | ||
529 | fe->dtv_property_cache.bandwidth_hz = 6000000; | |
530 | fe->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_AUTO; | |
531 | fe->dtv_property_cache.guard_interval = GUARD_INTERVAL_AUTO; | |
532 | fe->dtv_property_cache.isdbt_partial_reception = 0; | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
537 | static int mb86a20s_tune(struct dvb_frontend *fe, | |
538 | struct dvb_frontend_parameters *params, | |
539 | unsigned int mode_flags, | |
540 | unsigned int *delay, | |
541 | fe_status_t *status) | |
542 | { | |
543 | int rc = 0; | |
544 | ||
545 | dprintk("\n"); | |
546 | ||
547 | if (params != NULL) | |
548 | rc = mb86a20s_set_frontend(fe, params); | |
549 | ||
550 | if (!(mode_flags & FE_TUNE_MODE_ONESHOT)) | |
551 | mb86a20s_read_status(fe, status); | |
552 | ||
553 | return rc; | |
554 | } | |
555 | ||
556 | static void mb86a20s_release(struct dvb_frontend *fe) | |
557 | { | |
558 | struct mb86a20s_state *state = fe->demodulator_priv; | |
559 | ||
560 | dprintk("\n"); | |
561 | ||
562 | kfree(state); | |
563 | } | |
564 | ||
565 | static struct dvb_frontend_ops mb86a20s_ops; | |
566 | ||
567 | struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config, | |
568 | struct i2c_adapter *i2c) | |
569 | { | |
570 | u8 rev; | |
571 | ||
572 | /* allocate memory for the internal state */ | |
573 | struct mb86a20s_state *state = | |
574 | kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL); | |
575 | ||
576 | dprintk("\n"); | |
577 | if (state == NULL) { | |
578 | rc("Unable to kzalloc\n"); | |
579 | goto error; | |
580 | } | |
581 | ||
582 | /* setup the state */ | |
583 | state->config = config; | |
584 | state->i2c = i2c; | |
585 | ||
586 | /* create dvb_frontend */ | |
587 | memcpy(&state->frontend.ops, &mb86a20s_ops, | |
588 | sizeof(struct dvb_frontend_ops)); | |
589 | state->frontend.demodulator_priv = state; | |
590 | ||
591 | /* Check if it is a mb86a20s frontend */ | |
592 | rev = mb86a20s_readreg(state, 0); | |
593 | ||
594 | if (rev == 0x13) { | |
595 | printk(KERN_INFO "Detected a Fujitsu mb86a20s frontend\n"); | |
596 | } else { | |
597 | printk(KERN_ERR "Frontend revision %d is unknown - aborting.\n", | |
598 | rev); | |
599 | goto error; | |
600 | } | |
601 | ||
602 | return &state->frontend; | |
603 | ||
604 | error: | |
605 | kfree(state); | |
606 | return NULL; | |
607 | } | |
608 | EXPORT_SYMBOL(mb86a20s_attach); | |
609 | ||
610 | static struct dvb_frontend_ops mb86a20s_ops = { | |
611 | /* Use dib8000 values per default */ | |
612 | .info = { | |
613 | .name = "Fujitsu mb86A20s", | |
614 | .type = FE_OFDM, | |
615 | .caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER | | |
616 | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
617 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | | |
618 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | | |
619 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO | | |
620 | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO, | |
621 | /* Actually, those values depend on the used tuner */ | |
622 | .frequency_min = 45000000, | |
623 | .frequency_max = 864000000, | |
624 | .frequency_stepsize = 62500, | |
625 | }, | |
626 | ||
627 | .release = mb86a20s_release, | |
628 | ||
629 | .init = mb86a20s_initfe, | |
630 | .set_frontend = mb86a20s_set_frontend, | |
631 | .get_frontend = mb86a20s_get_frontend, | |
632 | .read_status = mb86a20s_read_status, | |
633 | .read_signal_strength = mb86a20s_read_signal_strength, | |
634 | .tune = mb86a20s_tune, | |
635 | }; | |
636 | ||
637 | MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware"); | |
638 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); | |
639 | MODULE_LICENSE("GPL"); |