1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * tda18271c2dd: Driver for the TDA18271C2 tuner |
4 | * |
5 | * Copyright (C) 2010 Digital Devices GmbH |
6 | */ |
7 | |
8 | #include <linux/kernel.h> |
9 | #include <linux/module.h> |
10 | #include <linux/init.h> |
11 | #include <linux/delay.h> |
12 | #include <linux/firmware.h> |
13 | #include <linux/i2c.h> |
14 | #include <asm/div64.h> |
15 | |
16 | #include <media/dvb_frontend.h> |
17 | #include "tda18271c2dd.h" |
18 | |
19 | /* Max transfer size done by I2C transfer functions */ |
20 | #define MAX_XFER_SIZE 64 |
21 | |
22 | struct SStandardParam { |
23 | s32 m_IFFrequency; |
24 | u32 m_BandWidth; |
25 | u8 m_EP3_4_0; |
26 | u8 m_EB22; |
27 | }; |
28 | |
29 | struct SMap { |
30 | u32 m_Frequency; |
31 | u8 m_Param; |
32 | }; |
33 | |
34 | struct SMapI { |
35 | u32 m_Frequency; |
36 | s32 m_Param; |
37 | }; |
38 | |
39 | struct SMap2 { |
40 | u32 m_Frequency; |
41 | u8 m_Param1; |
42 | u8 m_Param2; |
43 | }; |
44 | |
45 | struct SRFBandMap { |
46 | u32 m_RF_max; |
47 | u32 m_RF1_Default; |
48 | u32 m_RF2_Default; |
49 | u32 m_RF3_Default; |
50 | }; |
51 | |
52 | enum ERegister { |
53 | ID = 0, |
54 | TM, |
55 | PL, |
56 | EP1, EP2, EP3, EP4, EP5, |
57 | CPD, CD1, CD2, CD3, |
58 | MPD, MD1, MD2, MD3, |
59 | EB1, EB2, EB3, EB4, EB5, EB6, EB7, EB8, EB9, EB10, |
60 | EB11, EB12, EB13, EB14, EB15, EB16, EB17, EB18, EB19, EB20, |
61 | EB21, EB22, EB23, |
62 | NUM_REGS |
63 | }; |
64 | |
65 | struct tda_state { |
66 | struct i2c_adapter *i2c; |
67 | u8 adr; |
68 | |
69 | u32 m_Frequency; |
70 | u32 IF; |
71 | |
72 | u8 m_IFLevelAnalog; |
73 | u8 m_IFLevelDigital; |
74 | u8 m_IFLevelDVBC; |
75 | u8 m_IFLevelDVBT; |
76 | |
77 | u8 m_EP4; |
78 | u8 m_EP3_Standby; |
79 | |
80 | bool m_bMaster; |
81 | |
82 | s32 m_SettlingTime; |
83 | |
84 | u8 m_Regs[NUM_REGS]; |
85 | |
86 | /* Tracking filter settings for band 0..6 */ |
87 | u32 m_RF1[7]; |
88 | s32 m_RF_A1[7]; |
89 | s32 m_RF_B1[7]; |
90 | u32 m_RF2[7]; |
91 | s32 m_RF_A2[7]; |
92 | s32 m_RF_B2[7]; |
93 | u32 m_RF3[7]; |
94 | |
95 | u8 m_TMValue_RFCal; /* Calibration temperature */ |
96 | |
97 | bool m_bFMInput; /* true to use Pin 8 for FM Radio */ |
98 | |
99 | }; |
100 | |
101 | static int PowerScan(struct tda_state *state, |
102 | u8 RFBand, u32 RF_in, |
103 | u32 *pRF_Out, bool *pbcal); |
104 | |
105 | static int i2c_readn(struct i2c_adapter *adapter, u8 adr, u8 *data, int len) |
106 | { |
107 | struct i2c_msg msgs[1] = {{.addr = adr, .flags = I2C_M_RD, |
108 | .buf = data, .len = len} }; |
109 | return (i2c_transfer(adap: adapter, msgs, num: 1) == 1) ? 0 : -1; |
110 | } |
111 | |
112 | static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len) |
113 | { |
114 | struct i2c_msg msg = {.addr = adr, .flags = 0, |
115 | .buf = data, .len = len}; |
116 | |
117 | if (i2c_transfer(adap, msgs: &msg, num: 1) != 1) { |
118 | printk(KERN_ERR "tda18271c2dd: i2c write error at addr %i\n" , adr); |
119 | return -1; |
120 | } |
121 | return 0; |
122 | } |
123 | |
124 | static int WriteRegs(struct tda_state *state, |
125 | u8 SubAddr, u8 *Regs, u16 nRegs) |
126 | { |
127 | u8 data[MAX_XFER_SIZE]; |
128 | |
129 | if (1 + nRegs > sizeof(data)) { |
130 | printk(KERN_WARNING |
131 | "%s: i2c wr: len=%d is too big!\n" , |
132 | KBUILD_MODNAME, nRegs); |
133 | return -EINVAL; |
134 | } |
135 | |
136 | data[0] = SubAddr; |
137 | memcpy(data + 1, Regs, nRegs); |
138 | return i2c_write(adap: state->i2c, adr: state->adr, data, len: nRegs + 1); |
139 | } |
140 | |
141 | static int WriteReg(struct tda_state *state, u8 SubAddr, u8 Reg) |
142 | { |
143 | u8 msg[2] = {SubAddr, Reg}; |
144 | |
145 | return i2c_write(adap: state->i2c, adr: state->adr, data: msg, len: 2); |
146 | } |
147 | |
148 | static int Read(struct tda_state *state, u8 * Regs) |
149 | { |
150 | return i2c_readn(adapter: state->i2c, adr: state->adr, data: Regs, len: 16); |
151 | } |
152 | |
153 | static int ReadExtented(struct tda_state *state, u8 * Regs) |
154 | { |
155 | return i2c_readn(adapter: state->i2c, adr: state->adr, data: Regs, len: NUM_REGS); |
156 | } |
157 | |
158 | static int UpdateRegs(struct tda_state *state, u8 RegFrom, u8 RegTo) |
159 | { |
160 | return WriteRegs(state, SubAddr: RegFrom, |
161 | Regs: &state->m_Regs[RegFrom], nRegs: RegTo-RegFrom+1); |
162 | } |
163 | static int UpdateReg(struct tda_state *state, u8 Reg) |
164 | { |
165 | return WriteReg(state, SubAddr: Reg, Reg: state->m_Regs[Reg]); |
166 | } |
167 | |
168 | #include "tda18271c2dd_maps.h" |
169 | |
170 | static void reset(struct tda_state *state) |
171 | { |
172 | u32 ulIFLevelAnalog = 0; |
173 | u32 ulIFLevelDigital = 2; |
174 | u32 ulIFLevelDVBC = 7; |
175 | u32 ulIFLevelDVBT = 6; |
176 | u32 ulXTOut = 0; |
177 | u32 ulStandbyMode = 0x06; /* Send in stdb, but leave osc on */ |
178 | u32 ulSlave = 0; |
179 | u32 ulFMInput = 0; |
180 | u32 ulSettlingTime = 100; |
181 | |
182 | state->m_Frequency = 0; |
183 | state->m_SettlingTime = 100; |
184 | state->m_IFLevelAnalog = (ulIFLevelAnalog & 0x07) << 2; |
185 | state->m_IFLevelDigital = (ulIFLevelDigital & 0x07) << 2; |
186 | state->m_IFLevelDVBC = (ulIFLevelDVBC & 0x07) << 2; |
187 | state->m_IFLevelDVBT = (ulIFLevelDVBT & 0x07) << 2; |
188 | |
189 | state->m_EP4 = 0x20; |
190 | if (ulXTOut != 0) |
191 | state->m_EP4 |= 0x40; |
192 | |
193 | state->m_EP3_Standby = ((ulStandbyMode & 0x07) << 5) | 0x0F; |
194 | state->m_bMaster = (ulSlave == 0); |
195 | |
196 | state->m_SettlingTime = ulSettlingTime; |
197 | |
198 | state->m_bFMInput = (ulFMInput == 2); |
199 | } |
200 | |
201 | static bool SearchMap1(const struct SMap map[], u32 frequency, u8 *param) |
202 | { |
203 | int i = 0; |
204 | |
205 | while ((map[i].m_Frequency != 0) && (frequency > map[i].m_Frequency)) |
206 | i += 1; |
207 | if (map[i].m_Frequency == 0) |
208 | return false; |
209 | *param = map[i].m_Param; |
210 | return true; |
211 | } |
212 | |
213 | static bool SearchMap2(const struct SMapI map[], u32 frequency, s32 *param) |
214 | { |
215 | int i = 0; |
216 | |
217 | while ((map[i].m_Frequency != 0) && |
218 | (frequency > map[i].m_Frequency)) |
219 | i += 1; |
220 | if (map[i].m_Frequency == 0) |
221 | return false; |
222 | *param = map[i].m_Param; |
223 | return true; |
224 | } |
225 | |
226 | static bool SearchMap3(const struct SMap2 map[], u32 frequency, u8 *param1, |
227 | u8 *param2) |
228 | { |
229 | int i = 0; |
230 | |
231 | while ((map[i].m_Frequency != 0) && |
232 | (frequency > map[i].m_Frequency)) |
233 | i += 1; |
234 | if (map[i].m_Frequency == 0) |
235 | return false; |
236 | *param1 = map[i].m_Param1; |
237 | *param2 = map[i].m_Param2; |
238 | return true; |
239 | } |
240 | |
241 | static bool SearchMap4(const struct SRFBandMap map[], u32 frequency, u8 *rfband) |
242 | { |
243 | int i = 0; |
244 | |
245 | while (i < 7 && (frequency > map[i].m_RF_max)) |
246 | i += 1; |
247 | if (i == 7) |
248 | return false; |
249 | *rfband = i; |
250 | return true; |
251 | } |
252 | |
253 | static int ThermometerRead(struct tda_state *state, u8 *pTM_Value) |
254 | { |
255 | int status = 0; |
256 | |
257 | do { |
258 | u8 Regs[16]; |
259 | state->m_Regs[TM] |= 0x10; |
260 | status = UpdateReg(state, Reg: TM); |
261 | if (status < 0) |
262 | break; |
263 | status = Read(state, Regs); |
264 | if (status < 0) |
265 | break; |
266 | if (((Regs[TM] & 0x0F) == 0 && (Regs[TM] & 0x20) == 0x20) || |
267 | ((Regs[TM] & 0x0F) == 8 && (Regs[TM] & 0x20) == 0x00)) { |
268 | state->m_Regs[TM] ^= 0x20; |
269 | status = UpdateReg(state, Reg: TM); |
270 | if (status < 0) |
271 | break; |
272 | msleep(msecs: 10); |
273 | status = Read(state, Regs); |
274 | if (status < 0) |
275 | break; |
276 | } |
277 | *pTM_Value = (Regs[TM] & 0x20) |
278 | ? m_Thermometer_Map_2[Regs[TM] & 0x0F] |
279 | : m_Thermometer_Map_1[Regs[TM] & 0x0F] ; |
280 | state->m_Regs[TM] &= ~0x10; /* Thermometer off */ |
281 | status = UpdateReg(state, Reg: TM); |
282 | if (status < 0) |
283 | break; |
284 | state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 ????????? */ |
285 | status = UpdateReg(state, Reg: EP4); |
286 | if (status < 0) |
287 | break; |
288 | } while (0); |
289 | |
290 | return status; |
291 | } |
292 | |
293 | static int StandBy(struct tda_state *state) |
294 | { |
295 | int status = 0; |
296 | do { |
297 | state->m_Regs[EB12] &= ~0x20; /* PD_AGC1_Det = 0 */ |
298 | status = UpdateReg(state, Reg: EB12); |
299 | if (status < 0) |
300 | break; |
301 | state->m_Regs[EB18] &= ~0x83; /* AGC1_loop_off = 0, AGC1_Gain = 6 dB */ |
302 | status = UpdateReg(state, Reg: EB18); |
303 | if (status < 0) |
304 | break; |
305 | state->m_Regs[EB21] |= 0x03; /* AGC2_Gain = -6 dB */ |
306 | state->m_Regs[EP3] = state->m_EP3_Standby; |
307 | status = UpdateReg(state, Reg: EP3); |
308 | if (status < 0) |
309 | break; |
310 | state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LP_Fc[2] = 0 */ |
311 | status = UpdateRegs(state, RegFrom: EB21, RegTo: EB23); |
312 | if (status < 0) |
313 | break; |
314 | } while (0); |
315 | return status; |
316 | } |
317 | |
318 | static int CalcMainPLL(struct tda_state *state, u32 freq) |
319 | { |
320 | |
321 | u8 PostDiv; |
322 | u8 Div; |
323 | u64 OscFreq; |
324 | u32 MainDiv; |
325 | |
326 | if (!SearchMap3(map: m_Main_PLL_Map, frequency: freq, param1: &PostDiv, param2: &Div)) |
327 | return -EINVAL; |
328 | |
329 | OscFreq = (u64) freq * (u64) Div; |
330 | OscFreq *= (u64) 16384; |
331 | do_div(OscFreq, (u64)16000000); |
332 | MainDiv = OscFreq; |
333 | |
334 | state->m_Regs[MPD] = PostDiv & 0x77; |
335 | state->m_Regs[MD1] = ((MainDiv >> 16) & 0x7F); |
336 | state->m_Regs[MD2] = ((MainDiv >> 8) & 0xFF); |
337 | state->m_Regs[MD3] = (MainDiv & 0xFF); |
338 | |
339 | return UpdateRegs(state, RegFrom: MPD, RegTo: MD3); |
340 | } |
341 | |
342 | static int CalcCalPLL(struct tda_state *state, u32 freq) |
343 | { |
344 | u8 PostDiv; |
345 | u8 Div; |
346 | u64 OscFreq; |
347 | u32 CalDiv; |
348 | |
349 | if (!SearchMap3(map: m_Cal_PLL_Map, frequency: freq, param1: &PostDiv, param2: &Div)) |
350 | return -EINVAL; |
351 | |
352 | OscFreq = (u64)freq * (u64)Div; |
353 | /* CalDiv = u32( OscFreq * 16384 / 16000000 ); */ |
354 | OscFreq *= (u64)16384; |
355 | do_div(OscFreq, (u64)16000000); |
356 | CalDiv = OscFreq; |
357 | |
358 | state->m_Regs[CPD] = PostDiv; |
359 | state->m_Regs[CD1] = ((CalDiv >> 16) & 0xFF); |
360 | state->m_Regs[CD2] = ((CalDiv >> 8) & 0xFF); |
361 | state->m_Regs[CD3] = (CalDiv & 0xFF); |
362 | |
363 | return UpdateRegs(state, RegFrom: CPD, RegTo: CD3); |
364 | } |
365 | |
366 | static int CalibrateRF(struct tda_state *state, |
367 | u8 RFBand, u32 freq, s32 *pCprog) |
368 | { |
369 | int status = 0; |
370 | u8 Regs[NUM_REGS]; |
371 | do { |
372 | u8 BP_Filter = 0; |
373 | u8 GainTaper = 0; |
374 | u8 RFC_K = 0; |
375 | u8 RFC_M = 0; |
376 | |
377 | state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 */ |
378 | status = UpdateReg(state, Reg: EP4); |
379 | if (status < 0) |
380 | break; |
381 | state->m_Regs[EB18] |= 0x03; /* AGC1_Gain = 3 */ |
382 | status = UpdateReg(state, Reg: EB18); |
383 | if (status < 0) |
384 | break; |
385 | |
386 | /* Switching off LT (as datasheet says) causes calibration on C1 to fail */ |
387 | /* (Readout of Cprog is always 255) */ |
388 | if (state->m_Regs[ID] != 0x83) /* C1: ID == 83, C2: ID == 84 */ |
389 | state->m_Regs[EP3] |= 0x40; /* SM_LT = 1 */ |
390 | |
391 | if (!(SearchMap1(map: m_BP_Filter_Map, frequency: freq, param: &BP_Filter) && |
392 | SearchMap1(map: m_GainTaper_Map, frequency: freq, param: &GainTaper) && |
393 | SearchMap3(map: m_KM_Map, frequency: freq, param1: &RFC_K, param2: &RFC_M))) |
394 | return -EINVAL; |
395 | |
396 | state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | BP_Filter; |
397 | state->m_Regs[EP2] = (RFBand << 5) | GainTaper; |
398 | |
399 | state->m_Regs[EB13] = (state->m_Regs[EB13] & ~0x7C) | (RFC_K << 4) | (RFC_M << 2); |
400 | |
401 | status = UpdateRegs(state, RegFrom: EP1, RegTo: EP3); |
402 | if (status < 0) |
403 | break; |
404 | status = UpdateReg(state, Reg: EB13); |
405 | if (status < 0) |
406 | break; |
407 | |
408 | state->m_Regs[EB4] |= 0x20; /* LO_ForceSrce = 1 */ |
409 | status = UpdateReg(state, Reg: EB4); |
410 | if (status < 0) |
411 | break; |
412 | |
413 | state->m_Regs[EB7] |= 0x20; /* CAL_ForceSrce = 1 */ |
414 | status = UpdateReg(state, Reg: EB7); |
415 | if (status < 0) |
416 | break; |
417 | |
418 | state->m_Regs[EB14] = 0; /* RFC_Cprog = 0 */ |
419 | status = UpdateReg(state, Reg: EB14); |
420 | if (status < 0) |
421 | break; |
422 | |
423 | state->m_Regs[EB20] &= ~0x20; /* ForceLock = 0; */ |
424 | status = UpdateReg(state, Reg: EB20); |
425 | if (status < 0) |
426 | break; |
427 | |
428 | state->m_Regs[EP4] |= 0x03; /* CAL_Mode = 3 */ |
429 | status = UpdateRegs(state, RegFrom: EP4, RegTo: EP5); |
430 | if (status < 0) |
431 | break; |
432 | |
433 | status = CalcCalPLL(state, freq); |
434 | if (status < 0) |
435 | break; |
436 | status = CalcMainPLL(state, freq: freq + 1000000); |
437 | if (status < 0) |
438 | break; |
439 | |
440 | msleep(msecs: 5); |
441 | status = UpdateReg(state, Reg: EP2); |
442 | if (status < 0) |
443 | break; |
444 | status = UpdateReg(state, Reg: EP1); |
445 | if (status < 0) |
446 | break; |
447 | status = UpdateReg(state, Reg: EP2); |
448 | if (status < 0) |
449 | break; |
450 | status = UpdateReg(state, Reg: EP1); |
451 | if (status < 0) |
452 | break; |
453 | |
454 | state->m_Regs[EB4] &= ~0x20; /* LO_ForceSrce = 0 */ |
455 | status = UpdateReg(state, Reg: EB4); |
456 | if (status < 0) |
457 | break; |
458 | |
459 | state->m_Regs[EB7] &= ~0x20; /* CAL_ForceSrce = 0 */ |
460 | status = UpdateReg(state, Reg: EB7); |
461 | if (status < 0) |
462 | break; |
463 | msleep(msecs: 10); |
464 | |
465 | state->m_Regs[EB20] |= 0x20; /* ForceLock = 1; */ |
466 | status = UpdateReg(state, Reg: EB20); |
467 | if (status < 0) |
468 | break; |
469 | msleep(msecs: 60); |
470 | |
471 | state->m_Regs[EP4] &= ~0x03; /* CAL_Mode = 0 */ |
472 | state->m_Regs[EP3] &= ~0x40; /* SM_LT = 0 */ |
473 | state->m_Regs[EB18] &= ~0x03; /* AGC1_Gain = 0 */ |
474 | status = UpdateReg(state, Reg: EB18); |
475 | if (status < 0) |
476 | break; |
477 | status = UpdateRegs(state, RegFrom: EP3, RegTo: EP4); |
478 | if (status < 0) |
479 | break; |
480 | status = UpdateReg(state, Reg: EP1); |
481 | if (status < 0) |
482 | break; |
483 | |
484 | status = ReadExtented(state, Regs); |
485 | if (status < 0) |
486 | break; |
487 | |
488 | *pCprog = Regs[EB14]; |
489 | |
490 | } while (0); |
491 | return status; |
492 | } |
493 | |
494 | static int RFTrackingFiltersInit(struct tda_state *state, |
495 | u8 RFBand) |
496 | { |
497 | int status = 0; |
498 | |
499 | u32 RF1 = m_RF_Band_Map[RFBand].m_RF1_Default; |
500 | u32 RF2 = m_RF_Band_Map[RFBand].m_RF2_Default; |
501 | u32 RF3 = m_RF_Band_Map[RFBand].m_RF3_Default; |
502 | bool bcal = false; |
503 | |
504 | s32 Cprog_cal1 = 0; |
505 | s32 Cprog_table1 = 0; |
506 | s32 Cprog_cal2 = 0; |
507 | s32 Cprog_table2 = 0; |
508 | s32 Cprog_cal3 = 0; |
509 | s32 Cprog_table3 = 0; |
510 | |
511 | state->m_RF_A1[RFBand] = 0; |
512 | state->m_RF_B1[RFBand] = 0; |
513 | state->m_RF_A2[RFBand] = 0; |
514 | state->m_RF_B2[RFBand] = 0; |
515 | |
516 | do { |
517 | status = PowerScan(state, RFBand, RF_in: RF1, pRF_Out: &RF1, pbcal: &bcal); |
518 | if (status < 0) |
519 | break; |
520 | if (bcal) { |
521 | status = CalibrateRF(state, RFBand, freq: RF1, pCprog: &Cprog_cal1); |
522 | if (status < 0) |
523 | break; |
524 | } |
525 | SearchMap2(map: m_RF_Cal_Map, frequency: RF1, param: &Cprog_table1); |
526 | if (!bcal) |
527 | Cprog_cal1 = Cprog_table1; |
528 | state->m_RF_B1[RFBand] = Cprog_cal1 - Cprog_table1; |
529 | /* state->m_RF_A1[RF_Band] = ???? */ |
530 | |
531 | if (RF2 == 0) |
532 | break; |
533 | |
534 | status = PowerScan(state, RFBand, RF_in: RF2, pRF_Out: &RF2, pbcal: &bcal); |
535 | if (status < 0) |
536 | break; |
537 | if (bcal) { |
538 | status = CalibrateRF(state, RFBand, freq: RF2, pCprog: &Cprog_cal2); |
539 | if (status < 0) |
540 | break; |
541 | } |
542 | SearchMap2(map: m_RF_Cal_Map, frequency: RF2, param: &Cprog_table2); |
543 | if (!bcal) |
544 | Cprog_cal2 = Cprog_table2; |
545 | |
546 | state->m_RF_A1[RFBand] = |
547 | (Cprog_cal2 - Cprog_table2 - Cprog_cal1 + Cprog_table1) / |
548 | ((s32)(RF2) - (s32)(RF1)); |
549 | |
550 | if (RF3 == 0) |
551 | break; |
552 | |
553 | status = PowerScan(state, RFBand, RF_in: RF3, pRF_Out: &RF3, pbcal: &bcal); |
554 | if (status < 0) |
555 | break; |
556 | if (bcal) { |
557 | status = CalibrateRF(state, RFBand, freq: RF3, pCprog: &Cprog_cal3); |
558 | if (status < 0) |
559 | break; |
560 | } |
561 | SearchMap2(map: m_RF_Cal_Map, frequency: RF3, param: &Cprog_table3); |
562 | if (!bcal) |
563 | Cprog_cal3 = Cprog_table3; |
564 | state->m_RF_A2[RFBand] = (Cprog_cal3 - Cprog_table3 - Cprog_cal2 + Cprog_table2) / ((s32)(RF3) - (s32)(RF2)); |
565 | state->m_RF_B2[RFBand] = Cprog_cal2 - Cprog_table2; |
566 | |
567 | } while (0); |
568 | |
569 | state->m_RF1[RFBand] = RF1; |
570 | state->m_RF2[RFBand] = RF2; |
571 | state->m_RF3[RFBand] = RF3; |
572 | |
573 | #if 0 |
574 | printk(KERN_ERR "tda18271c2dd: %s %d RF1 = %d A1 = %d B1 = %d RF2 = %d A2 = %d B2 = %d RF3 = %d\n" , __func__, |
575 | RFBand, RF1, state->m_RF_A1[RFBand], state->m_RF_B1[RFBand], RF2, |
576 | state->m_RF_A2[RFBand], state->m_RF_B2[RFBand], RF3); |
577 | #endif |
578 | |
579 | return status; |
580 | } |
581 | |
582 | static int PowerScan(struct tda_state *state, |
583 | u8 RFBand, u32 RF_in, u32 *pRF_Out, bool *pbcal) |
584 | { |
585 | int status = 0; |
586 | do { |
587 | u8 Gain_Taper = 0; |
588 | s32 RFC_Cprog = 0; |
589 | u8 CID_Target = 0; |
590 | u8 CountLimit = 0; |
591 | u32 freq_MainPLL; |
592 | u8 Regs[NUM_REGS]; |
593 | u8 CID_Gain; |
594 | s32 Count = 0; |
595 | int sign = 1; |
596 | bool wait = false; |
597 | |
598 | if (!(SearchMap2(map: m_RF_Cal_Map, frequency: RF_in, param: &RFC_Cprog) && |
599 | SearchMap1(map: m_GainTaper_Map, frequency: RF_in, param: &Gain_Taper) && |
600 | SearchMap3(map: m_CID_Target_Map, frequency: RF_in, param1: &CID_Target, param2: &CountLimit))) { |
601 | |
602 | printk(KERN_ERR "tda18271c2dd: %s Search map failed\n" , __func__); |
603 | return -EINVAL; |
604 | } |
605 | |
606 | state->m_Regs[EP2] = (RFBand << 5) | Gain_Taper; |
607 | state->m_Regs[EB14] = (RFC_Cprog); |
608 | status = UpdateReg(state, Reg: EP2); |
609 | if (status < 0) |
610 | break; |
611 | status = UpdateReg(state, Reg: EB14); |
612 | if (status < 0) |
613 | break; |
614 | |
615 | freq_MainPLL = RF_in + 1000000; |
616 | status = CalcMainPLL(state, freq: freq_MainPLL); |
617 | if (status < 0) |
618 | break; |
619 | msleep(msecs: 5); |
620 | state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x03) | 1; /* CAL_mode = 1 */ |
621 | status = UpdateReg(state, Reg: EP4); |
622 | if (status < 0) |
623 | break; |
624 | status = UpdateReg(state, Reg: EP2); /* Launch power measurement */ |
625 | if (status < 0) |
626 | break; |
627 | status = ReadExtented(state, Regs); |
628 | if (status < 0) |
629 | break; |
630 | CID_Gain = Regs[EB10] & 0x3F; |
631 | state->m_Regs[ID] = Regs[ID]; /* Chip version, (needed for C1 workaround in CalibrateRF) */ |
632 | |
633 | *pRF_Out = RF_in; |
634 | |
635 | while (CID_Gain < CID_Target) { |
636 | freq_MainPLL = RF_in + sign * Count + 1000000; |
637 | status = CalcMainPLL(state, freq: freq_MainPLL); |
638 | if (status < 0) |
639 | break; |
640 | msleep(msecs: wait ? 5 : 1); |
641 | wait = false; |
642 | status = UpdateReg(state, Reg: EP2); /* Launch power measurement */ |
643 | if (status < 0) |
644 | break; |
645 | status = ReadExtented(state, Regs); |
646 | if (status < 0) |
647 | break; |
648 | CID_Gain = Regs[EB10] & 0x3F; |
649 | Count += 200000; |
650 | |
651 | if (Count < CountLimit * 100000) |
652 | continue; |
653 | if (sign < 0) |
654 | break; |
655 | |
656 | sign = -sign; |
657 | Count = 200000; |
658 | wait = true; |
659 | } |
660 | if (status < 0) |
661 | break; |
662 | if (CID_Gain >= CID_Target) { |
663 | *pbcal = true; |
664 | *pRF_Out = freq_MainPLL - 1000000; |
665 | } else |
666 | *pbcal = false; |
667 | } while (0); |
668 | |
669 | return status; |
670 | } |
671 | |
672 | static int PowerScanInit(struct tda_state *state) |
673 | { |
674 | int status = 0; |
675 | do { |
676 | state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | 0x12; |
677 | state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x1F); /* If level = 0, Cal mode = 0 */ |
678 | status = UpdateRegs(state, RegFrom: EP3, RegTo: EP4); |
679 | if (status < 0) |
680 | break; |
681 | state->m_Regs[EB18] = (state->m_Regs[EB18] & ~0x03); /* AGC 1 Gain = 0 */ |
682 | status = UpdateReg(state, Reg: EB18); |
683 | if (status < 0) |
684 | break; |
685 | state->m_Regs[EB21] = (state->m_Regs[EB21] & ~0x03); /* AGC 2 Gain = 0 (Datasheet = 3) */ |
686 | state->m_Regs[EB23] = (state->m_Regs[EB23] | 0x06); /* ForceLP_Fc2_En = 1, LPFc[2] = 1 */ |
687 | status = UpdateRegs(state, RegFrom: EB21, RegTo: EB23); |
688 | if (status < 0) |
689 | break; |
690 | } while (0); |
691 | return status; |
692 | } |
693 | |
694 | static int CalcRFFilterCurve(struct tda_state *state) |
695 | { |
696 | int status = 0; |
697 | do { |
698 | msleep(msecs: 200); /* Temperature stabilisation */ |
699 | status = PowerScanInit(state); |
700 | if (status < 0) |
701 | break; |
702 | status = RFTrackingFiltersInit(state, RFBand: 0); |
703 | if (status < 0) |
704 | break; |
705 | status = RFTrackingFiltersInit(state, RFBand: 1); |
706 | if (status < 0) |
707 | break; |
708 | status = RFTrackingFiltersInit(state, RFBand: 2); |
709 | if (status < 0) |
710 | break; |
711 | status = RFTrackingFiltersInit(state, RFBand: 3); |
712 | if (status < 0) |
713 | break; |
714 | status = RFTrackingFiltersInit(state, RFBand: 4); |
715 | if (status < 0) |
716 | break; |
717 | status = RFTrackingFiltersInit(state, RFBand: 5); |
718 | if (status < 0) |
719 | break; |
720 | status = RFTrackingFiltersInit(state, RFBand: 6); |
721 | if (status < 0) |
722 | break; |
723 | status = ThermometerRead(state, pTM_Value: &state->m_TMValue_RFCal); /* also switches off Cal mode !!! */ |
724 | if (status < 0) |
725 | break; |
726 | } while (0); |
727 | |
728 | return status; |
729 | } |
730 | |
731 | static int FixedContentsI2CUpdate(struct tda_state *state) |
732 | { |
733 | static u8 InitRegs[] = { |
734 | 0x08, 0x80, 0xC6, |
735 | 0xDF, 0x16, 0x60, 0x80, |
736 | 0x80, 0x00, 0x00, 0x00, |
737 | 0x00, 0x00, 0x00, 0x00, |
738 | 0xFC, 0x01, 0x84, 0x41, |
739 | 0x01, 0x84, 0x40, 0x07, |
740 | 0x00, 0x00, 0x96, 0x3F, |
741 | 0xC1, 0x00, 0x8F, 0x00, |
742 | 0x00, 0x8C, 0x00, 0x20, |
743 | 0xB3, 0x48, 0xB0, |
744 | }; |
745 | int status = 0; |
746 | memcpy(&state->m_Regs[TM], InitRegs, EB23 - TM + 1); |
747 | do { |
748 | status = UpdateRegs(state, RegFrom: TM, RegTo: EB23); |
749 | if (status < 0) |
750 | break; |
751 | |
752 | /* AGC1 gain setup */ |
753 | state->m_Regs[EB17] = 0x00; |
754 | status = UpdateReg(state, Reg: EB17); |
755 | if (status < 0) |
756 | break; |
757 | state->m_Regs[EB17] = 0x03; |
758 | status = UpdateReg(state, Reg: EB17); |
759 | if (status < 0) |
760 | break; |
761 | state->m_Regs[EB17] = 0x43; |
762 | status = UpdateReg(state, Reg: EB17); |
763 | if (status < 0) |
764 | break; |
765 | state->m_Regs[EB17] = 0x4C; |
766 | status = UpdateReg(state, Reg: EB17); |
767 | if (status < 0) |
768 | break; |
769 | |
770 | /* IRC Cal Low band */ |
771 | state->m_Regs[EP3] = 0x1F; |
772 | state->m_Regs[EP4] = 0x66; |
773 | state->m_Regs[EP5] = 0x81; |
774 | state->m_Regs[CPD] = 0xCC; |
775 | state->m_Regs[CD1] = 0x6C; |
776 | state->m_Regs[CD2] = 0x00; |
777 | state->m_Regs[CD3] = 0x00; |
778 | state->m_Regs[MPD] = 0xC5; |
779 | state->m_Regs[MD1] = 0x77; |
780 | state->m_Regs[MD2] = 0x08; |
781 | state->m_Regs[MD3] = 0x00; |
782 | status = UpdateRegs(state, RegFrom: EP2, RegTo: MD3); /* diff between sw and datasheet (ep3-md3) */ |
783 | if (status < 0) |
784 | break; |
785 | |
786 | #if 0 |
787 | state->m_Regs[EB4] = 0x61; /* missing in sw */ |
788 | status = UpdateReg(state, EB4); |
789 | if (status < 0) |
790 | break; |
791 | msleep(1); |
792 | state->m_Regs[EB4] = 0x41; |
793 | status = UpdateReg(state, EB4); |
794 | if (status < 0) |
795 | break; |
796 | #endif |
797 | |
798 | msleep(msecs: 5); |
799 | status = UpdateReg(state, Reg: EP1); |
800 | if (status < 0) |
801 | break; |
802 | msleep(msecs: 5); |
803 | |
804 | state->m_Regs[EP5] = 0x85; |
805 | state->m_Regs[CPD] = 0xCB; |
806 | state->m_Regs[CD1] = 0x66; |
807 | state->m_Regs[CD2] = 0x70; |
808 | status = UpdateRegs(state, RegFrom: EP3, RegTo: CD3); |
809 | if (status < 0) |
810 | break; |
811 | msleep(msecs: 5); |
812 | status = UpdateReg(state, Reg: EP2); |
813 | if (status < 0) |
814 | break; |
815 | msleep(msecs: 30); |
816 | |
817 | /* IRC Cal mid band */ |
818 | state->m_Regs[EP5] = 0x82; |
819 | state->m_Regs[CPD] = 0xA8; |
820 | state->m_Regs[CD2] = 0x00; |
821 | state->m_Regs[MPD] = 0xA1; /* Datasheet = 0xA9 */ |
822 | state->m_Regs[MD1] = 0x73; |
823 | state->m_Regs[MD2] = 0x1A; |
824 | status = UpdateRegs(state, RegFrom: EP3, RegTo: MD3); |
825 | if (status < 0) |
826 | break; |
827 | |
828 | msleep(msecs: 5); |
829 | status = UpdateReg(state, Reg: EP1); |
830 | if (status < 0) |
831 | break; |
832 | msleep(msecs: 5); |
833 | |
834 | state->m_Regs[EP5] = 0x86; |
835 | state->m_Regs[CPD] = 0xA8; |
836 | state->m_Regs[CD1] = 0x66; |
837 | state->m_Regs[CD2] = 0xA0; |
838 | status = UpdateRegs(state, RegFrom: EP3, RegTo: CD3); |
839 | if (status < 0) |
840 | break; |
841 | msleep(msecs: 5); |
842 | status = UpdateReg(state, Reg: EP2); |
843 | if (status < 0) |
844 | break; |
845 | msleep(msecs: 30); |
846 | |
847 | /* IRC Cal high band */ |
848 | state->m_Regs[EP5] = 0x83; |
849 | state->m_Regs[CPD] = 0x98; |
850 | state->m_Regs[CD1] = 0x65; |
851 | state->m_Regs[CD2] = 0x00; |
852 | state->m_Regs[MPD] = 0x91; /* Datasheet = 0x91 */ |
853 | state->m_Regs[MD1] = 0x71; |
854 | state->m_Regs[MD2] = 0xCD; |
855 | status = UpdateRegs(state, RegFrom: EP3, RegTo: MD3); |
856 | if (status < 0) |
857 | break; |
858 | msleep(msecs: 5); |
859 | status = UpdateReg(state, Reg: EP1); |
860 | if (status < 0) |
861 | break; |
862 | msleep(msecs: 5); |
863 | state->m_Regs[EP5] = 0x87; |
864 | state->m_Regs[CD1] = 0x65; |
865 | state->m_Regs[CD2] = 0x50; |
866 | status = UpdateRegs(state, RegFrom: EP3, RegTo: CD3); |
867 | if (status < 0) |
868 | break; |
869 | msleep(msecs: 5); |
870 | status = UpdateReg(state, Reg: EP2); |
871 | if (status < 0) |
872 | break; |
873 | msleep(msecs: 30); |
874 | |
875 | /* Back to normal */ |
876 | state->m_Regs[EP4] = 0x64; |
877 | status = UpdateReg(state, Reg: EP4); |
878 | if (status < 0) |
879 | break; |
880 | status = UpdateReg(state, Reg: EP1); |
881 | if (status < 0) |
882 | break; |
883 | |
884 | } while (0); |
885 | return status; |
886 | } |
887 | |
888 | static int InitCal(struct tda_state *state) |
889 | { |
890 | int status = 0; |
891 | |
892 | do { |
893 | status = FixedContentsI2CUpdate(state); |
894 | if (status < 0) |
895 | break; |
896 | status = CalcRFFilterCurve(state); |
897 | if (status < 0) |
898 | break; |
899 | status = StandBy(state); |
900 | if (status < 0) |
901 | break; |
902 | /* m_bInitDone = true; */ |
903 | } while (0); |
904 | return status; |
905 | }; |
906 | |
907 | static int RFTrackingFiltersCorrection(struct tda_state *state, |
908 | u32 Frequency) |
909 | { |
910 | int status = 0; |
911 | s32 Cprog_table; |
912 | u8 RFBand; |
913 | u8 dCoverdT; |
914 | |
915 | if (!SearchMap2(map: m_RF_Cal_Map, frequency: Frequency, param: &Cprog_table) || |
916 | !SearchMap4(map: m_RF_Band_Map, frequency: Frequency, rfband: &RFBand) || |
917 | !SearchMap1(map: m_RF_Cal_DC_Over_DT_Map, frequency: Frequency, param: &dCoverdT)) |
918 | |
919 | return -EINVAL; |
920 | |
921 | do { |
922 | u8 TMValue_Current; |
923 | u32 RF1 = state->m_RF1[RFBand]; |
924 | u32 RF2 = state->m_RF1[RFBand]; |
925 | u32 RF3 = state->m_RF1[RFBand]; |
926 | s32 RF_A1 = state->m_RF_A1[RFBand]; |
927 | s32 RF_B1 = state->m_RF_B1[RFBand]; |
928 | s32 RF_A2 = state->m_RF_A2[RFBand]; |
929 | s32 RF_B2 = state->m_RF_B2[RFBand]; |
930 | s32 Capprox = 0; |
931 | int TComp; |
932 | |
933 | state->m_Regs[EP3] &= ~0xE0; /* Power up */ |
934 | status = UpdateReg(state, Reg: EP3); |
935 | if (status < 0) |
936 | break; |
937 | |
938 | status = ThermometerRead(state, pTM_Value: &TMValue_Current); |
939 | if (status < 0) |
940 | break; |
941 | |
942 | if (RF3 == 0 || Frequency < RF2) |
943 | Capprox = RF_A1 * ((s32)(Frequency) - (s32)(RF1)) + RF_B1 + Cprog_table; |
944 | else |
945 | Capprox = RF_A2 * ((s32)(Frequency) - (s32)(RF2)) + RF_B2 + Cprog_table; |
946 | |
947 | TComp = (int)(dCoverdT) * ((int)(TMValue_Current) - (int)(state->m_TMValue_RFCal))/1000; |
948 | |
949 | Capprox += TComp; |
950 | |
951 | if (Capprox < 0) |
952 | Capprox = 0; |
953 | else if (Capprox > 255) |
954 | Capprox = 255; |
955 | |
956 | |
957 | /* TODO Temperature compensation. There is defenitely a scale factor */ |
958 | /* missing in the datasheet, so leave it out for now. */ |
959 | state->m_Regs[EB14] = Capprox; |
960 | |
961 | status = UpdateReg(state, Reg: EB14); |
962 | if (status < 0) |
963 | break; |
964 | |
965 | } while (0); |
966 | return status; |
967 | } |
968 | |
969 | static int ChannelConfiguration(struct tda_state *state, |
970 | u32 Frequency, int Standard) |
971 | { |
972 | |
973 | s32 IntermediateFrequency = m_StandardTable[Standard].m_IFFrequency; |
974 | int status = 0; |
975 | |
976 | u8 BP_Filter = 0; |
977 | u8 RF_Band = 0; |
978 | u8 GainTaper = 0; |
979 | u8 IR_Meas = 0; |
980 | |
981 | state->IF = IntermediateFrequency; |
982 | /* printk("tda18271c2dd: %s Freq = %d Standard = %d IF = %d\n", __func__, Frequency, Standard, IntermediateFrequency); */ |
983 | /* get values from tables */ |
984 | |
985 | if (!(SearchMap1(map: m_BP_Filter_Map, frequency: Frequency, param: &BP_Filter) && |
986 | SearchMap1(map: m_GainTaper_Map, frequency: Frequency, param: &GainTaper) && |
987 | SearchMap1(map: m_IR_Meas_Map, frequency: Frequency, param: &IR_Meas) && |
988 | SearchMap4(map: m_RF_Band_Map, frequency: Frequency, rfband: &RF_Band))) { |
989 | |
990 | printk(KERN_ERR "tda18271c2dd: %s SearchMap failed\n" , __func__); |
991 | return -EINVAL; |
992 | } |
993 | |
994 | do { |
995 | state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | m_StandardTable[Standard].m_EP3_4_0; |
996 | state->m_Regs[EP3] &= ~0x04; /* switch RFAGC to high speed mode */ |
997 | |
998 | /* m_EP4 default for XToutOn, CAL_Mode (0) */ |
999 | state->m_Regs[EP4] = state->m_EP4 | ((Standard > HF_AnalogMax) ? state->m_IFLevelDigital : state->m_IFLevelAnalog); |
1000 | /* state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital; */ |
1001 | if (Standard <= HF_AnalogMax) |
1002 | state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelAnalog; |
1003 | else if (Standard <= HF_ATSC) |
1004 | state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBT; |
1005 | else if (Standard <= HF_DVBC) |
1006 | state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBC; |
1007 | else |
1008 | state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital; |
1009 | |
1010 | if ((Standard == HF_FM_Radio) && state->m_bFMInput) |
1011 | state->m_Regs[EP4] |= 0x80; |
1012 | |
1013 | state->m_Regs[MPD] &= ~0x80; |
1014 | if (Standard > HF_AnalogMax) |
1015 | state->m_Regs[MPD] |= 0x80; /* Add IF_notch for digital */ |
1016 | |
1017 | state->m_Regs[EB22] = m_StandardTable[Standard].m_EB22; |
1018 | |
1019 | /* Note: This is missing from flowchart in TDA18271 specification ( 1.5 MHz cutoff for FM ) */ |
1020 | if (Standard == HF_FM_Radio) |
1021 | state->m_Regs[EB23] |= 0x06; /* ForceLP_Fc2_En = 1, LPFc[2] = 1 */ |
1022 | else |
1023 | state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LPFc[2] = 0 */ |
1024 | |
1025 | status = UpdateRegs(state, RegFrom: EB22, RegTo: EB23); |
1026 | if (status < 0) |
1027 | break; |
1028 | |
1029 | state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | 0x40 | BP_Filter; /* Dis_Power_level = 1, Filter */ |
1030 | state->m_Regs[EP5] = (state->m_Regs[EP5] & ~0x07) | IR_Meas; |
1031 | state->m_Regs[EP2] = (RF_Band << 5) | GainTaper; |
1032 | |
1033 | state->m_Regs[EB1] = (state->m_Regs[EB1] & ~0x07) | |
1034 | (state->m_bMaster ? 0x04 : 0x00); /* CALVCO_FortLOn = MS */ |
1035 | /* AGC1_always_master = 0 */ |
1036 | /* AGC_firstn = 0 */ |
1037 | status = UpdateReg(state, Reg: EB1); |
1038 | if (status < 0) |
1039 | break; |
1040 | |
1041 | if (state->m_bMaster) { |
1042 | status = CalcMainPLL(state, freq: Frequency + IntermediateFrequency); |
1043 | if (status < 0) |
1044 | break; |
1045 | status = UpdateRegs(state, RegFrom: TM, RegTo: EP5); |
1046 | if (status < 0) |
1047 | break; |
1048 | state->m_Regs[EB4] |= 0x20; /* LO_forceSrce = 1 */ |
1049 | status = UpdateReg(state, Reg: EB4); |
1050 | if (status < 0) |
1051 | break; |
1052 | msleep(msecs: 1); |
1053 | state->m_Regs[EB4] &= ~0x20; /* LO_forceSrce = 0 */ |
1054 | status = UpdateReg(state, Reg: EB4); |
1055 | if (status < 0) |
1056 | break; |
1057 | } else { |
1058 | u8 PostDiv = 0; |
1059 | u8 Div; |
1060 | status = CalcCalPLL(state, freq: Frequency + IntermediateFrequency); |
1061 | if (status < 0) |
1062 | break; |
1063 | |
1064 | SearchMap3(map: m_Cal_PLL_Map, frequency: Frequency + IntermediateFrequency, param1: &PostDiv, param2: &Div); |
1065 | state->m_Regs[MPD] = (state->m_Regs[MPD] & ~0x7F) | (PostDiv & 0x77); |
1066 | status = UpdateReg(state, Reg: MPD); |
1067 | if (status < 0) |
1068 | break; |
1069 | status = UpdateRegs(state, RegFrom: TM, RegTo: EP5); |
1070 | if (status < 0) |
1071 | break; |
1072 | |
1073 | state->m_Regs[EB7] |= 0x20; /* CAL_forceSrce = 1 */ |
1074 | status = UpdateReg(state, Reg: EB7); |
1075 | if (status < 0) |
1076 | break; |
1077 | msleep(msecs: 1); |
1078 | state->m_Regs[EB7] &= ~0x20; /* CAL_forceSrce = 0 */ |
1079 | status = UpdateReg(state, Reg: EB7); |
1080 | if (status < 0) |
1081 | break; |
1082 | } |
1083 | msleep(msecs: 20); |
1084 | if (Standard != HF_FM_Radio) |
1085 | state->m_Regs[EP3] |= 0x04; /* RFAGC to normal mode */ |
1086 | status = UpdateReg(state, Reg: EP3); |
1087 | if (status < 0) |
1088 | break; |
1089 | |
1090 | } while (0); |
1091 | return status; |
1092 | } |
1093 | |
1094 | static int sleep(struct dvb_frontend *fe) |
1095 | { |
1096 | struct tda_state *state = fe->tuner_priv; |
1097 | |
1098 | StandBy(state); |
1099 | return 0; |
1100 | } |
1101 | |
1102 | static int init(struct dvb_frontend *fe) |
1103 | { |
1104 | return 0; |
1105 | } |
1106 | |
1107 | static void release(struct dvb_frontend *fe) |
1108 | { |
1109 | kfree(objp: fe->tuner_priv); |
1110 | fe->tuner_priv = NULL; |
1111 | } |
1112 | |
1113 | |
1114 | static int set_params(struct dvb_frontend *fe) |
1115 | { |
1116 | struct tda_state *state = fe->tuner_priv; |
1117 | int status = 0; |
1118 | int Standard; |
1119 | u32 bw = fe->dtv_property_cache.bandwidth_hz; |
1120 | u32 delsys = fe->dtv_property_cache.delivery_system; |
1121 | |
1122 | state->m_Frequency = fe->dtv_property_cache.frequency; |
1123 | |
1124 | switch (delsys) { |
1125 | case SYS_DVBT: |
1126 | case SYS_DVBT2: |
1127 | switch (bw) { |
1128 | case 6000000: |
1129 | Standard = HF_DVBT_6MHZ; |
1130 | break; |
1131 | case 7000000: |
1132 | Standard = HF_DVBT_7MHZ; |
1133 | break; |
1134 | case 8000000: |
1135 | Standard = HF_DVBT_8MHZ; |
1136 | break; |
1137 | default: |
1138 | return -EINVAL; |
1139 | } |
1140 | break; |
1141 | case SYS_DVBC_ANNEX_A: |
1142 | case SYS_DVBC_ANNEX_C: |
1143 | if (bw <= 6000000) |
1144 | Standard = HF_DVBC_6MHZ; |
1145 | else if (bw <= 7000000) |
1146 | Standard = HF_DVBC_7MHZ; |
1147 | else |
1148 | Standard = HF_DVBC_8MHZ; |
1149 | break; |
1150 | default: |
1151 | return -EINVAL; |
1152 | } |
1153 | do { |
1154 | status = RFTrackingFiltersCorrection(state, Frequency: state->m_Frequency); |
1155 | if (status < 0) |
1156 | break; |
1157 | status = ChannelConfiguration(state, Frequency: state->m_Frequency, |
1158 | Standard); |
1159 | if (status < 0) |
1160 | break; |
1161 | |
1162 | msleep(msecs: state->m_SettlingTime); /* Allow AGC's to settle down */ |
1163 | } while (0); |
1164 | return status; |
1165 | } |
1166 | |
1167 | #if 0 |
1168 | static int GetSignalStrength(s32 *pSignalStrength, u32 RFAgc, u32 IFAgc) |
1169 | { |
1170 | if (IFAgc < 500) { |
1171 | /* Scale this from 0 to 50000 */ |
1172 | *pSignalStrength = IFAgc * 100; |
1173 | } else { |
1174 | /* Scale range 500-1500 to 50000-80000 */ |
1175 | *pSignalStrength = 50000 + (IFAgc - 500) * 30; |
1176 | } |
1177 | |
1178 | return 0; |
1179 | } |
1180 | #endif |
1181 | |
1182 | static int get_if_frequency(struct dvb_frontend *fe, u32 *frequency) |
1183 | { |
1184 | struct tda_state *state = fe->tuner_priv; |
1185 | |
1186 | *frequency = state->IF; |
1187 | return 0; |
1188 | } |
1189 | |
1190 | static int get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) |
1191 | { |
1192 | /* struct tda_state *state = fe->tuner_priv; */ |
1193 | /* *bandwidth = priv->bandwidth; */ |
1194 | return 0; |
1195 | } |
1196 | |
1197 | |
1198 | static const struct dvb_tuner_ops tuner_ops = { |
1199 | .info = { |
1200 | .name = "NXP TDA18271C2D" , |
1201 | .frequency_min_hz = 47125 * kHz, |
1202 | .frequency_max_hz = 865 * MHz, |
1203 | .frequency_step_hz = 62500 |
1204 | }, |
1205 | .init = init, |
1206 | .sleep = sleep, |
1207 | .set_params = set_params, |
1208 | .release = release, |
1209 | .get_if_frequency = get_if_frequency, |
1210 | .get_bandwidth = get_bandwidth, |
1211 | }; |
1212 | |
1213 | struct dvb_frontend *tda18271c2dd_attach(struct dvb_frontend *fe, |
1214 | struct i2c_adapter *i2c, u8 adr) |
1215 | { |
1216 | struct tda_state *state; |
1217 | |
1218 | state = kzalloc(size: sizeof(struct tda_state), GFP_KERNEL); |
1219 | if (!state) |
1220 | return NULL; |
1221 | |
1222 | fe->tuner_priv = state; |
1223 | state->adr = adr; |
1224 | state->i2c = i2c; |
1225 | memcpy(&fe->ops.tuner_ops, &tuner_ops, sizeof(struct dvb_tuner_ops)); |
1226 | reset(state); |
1227 | InitCal(state); |
1228 | |
1229 | return fe; |
1230 | } |
1231 | EXPORT_SYMBOL_GPL(tda18271c2dd_attach); |
1232 | |
1233 | MODULE_DESCRIPTION("TDA18271C2 driver" ); |
1234 | MODULE_AUTHOR("DD" ); |
1235 | MODULE_LICENSE("GPL" ); |
1236 | |