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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / media / tuners / mt2063.c
blob2240d214dfac21267355f881891dc5f7919b2121
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Driver for mt2063 Micronas tuner
4 *
5 * Copyright (c) 2011 Mauro Carvalho Chehab
6 *
7 * This driver came from a driver originally written by:
8 * Henry Wang <Henry.wang@AzureWave.com>
9 * Made publicly available by Terratec, at:
10 * http://linux.terratec.de/files/TERRATEC_H7/20110323_TERRATEC_H7_Linux.tar.gz
11 */
12
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/string.h>
17 #include <linux/videodev2.h>
18 #include <linux/gcd.h>
19
20 #include "mt2063.h"
21
22 static unsigned int debug;
23 module_param(debug, int, 0644);
24 MODULE_PARM_DESC(debug, "Set Verbosity level");
25
26 #define dprintk(level, fmt, arg...) do { \
27 if (debug >= level) \
28 printk(KERN_DEBUG "mt2063 %s: " fmt, __func__, ## arg); \
29 } while (0)
30
31
32 /* positive error codes used internally */
33
34 /* Info: Unavoidable LO-related spur may be present in the output */
35 #define MT2063_SPUR_PRESENT_ERR (0x00800000)
36
37 /* Info: Mask of bits used for # of LO-related spurs that were avoided during tuning */
38 #define MT2063_SPUR_CNT_MASK (0x001f0000)
39 #define MT2063_SPUR_SHIFT (16)
40
41 /* Info: Upconverter frequency is out of range (may be reason for MT_UPC_UNLOCK) */
42 #define MT2063_UPC_RANGE (0x04000000)
43
44 /* Info: Downconverter frequency is out of range (may be reason for MT_DPC_UNLOCK) */
45 #define MT2063_DNC_RANGE (0x08000000)
46
47 /*
48 * Constant defining the version of the following structure
49 * and therefore the API for this code.
50 *
51 * When compiling the tuner driver, the preprocessor will
52 * check against this version number to make sure that
53 * it matches the version that the tuner driver knows about.
54 */
55
56 /* DECT Frequency Avoidance */
57 #define MT2063_DECT_AVOID_US_FREQS 0x00000001
58
59 #define MT2063_DECT_AVOID_EURO_FREQS 0x00000002
60
61 #define MT2063_EXCLUDE_US_DECT_FREQUENCIES(s) (((s) & MT2063_DECT_AVOID_US_FREQS) != 0)
62
63 #define MT2063_EXCLUDE_EURO_DECT_FREQUENCIES(s) (((s) & MT2063_DECT_AVOID_EURO_FREQS) != 0)
64
65 enum MT2063_DECT_Avoid_Type {
66 MT2063_NO_DECT_AVOIDANCE = 0, /* Do not create DECT exclusion zones. */
67 MT2063_AVOID_US_DECT = MT2063_DECT_AVOID_US_FREQS, /* Avoid US DECT frequencies. */
68 MT2063_AVOID_EURO_DECT = MT2063_DECT_AVOID_EURO_FREQS, /* Avoid European DECT frequencies. */
69 MT2063_AVOID_BOTH /* Avoid both regions. Not typically used. */
70 };
71
72 #define MT2063_MAX_ZONES 48
73
74 struct MT2063_ExclZone_t {
75 u32 min_;
76 u32 max_;
77 struct MT2063_ExclZone_t *next_;
78 };
79
80 /*
81 * Structure of data needed for Spur Avoidance
82 */
83 struct MT2063_AvoidSpursData_t {
84 u32 f_ref;
85 u32 f_in;
86 u32 f_LO1;
87 u32 f_if1_Center;
88 u32 f_if1_Request;
89 u32 f_if1_bw;
90 u32 f_LO2;
91 u32 f_out;
92 u32 f_out_bw;
93 u32 f_LO1_Step;
94 u32 f_LO2_Step;
95 u32 f_LO1_FracN_Avoid;
96 u32 f_LO2_FracN_Avoid;
97 u32 f_zif_bw;
98 u32 f_min_LO_Separation;
99 u32 maxH1;
100 u32 maxH2;
101 enum MT2063_DECT_Avoid_Type avoidDECT;
102 u32 bSpurPresent;
103 u32 bSpurAvoided;
104 u32 nSpursFound;
105 u32 nZones;
106 struct MT2063_ExclZone_t *freeZones;
107 struct MT2063_ExclZone_t *usedZones;
108 struct MT2063_ExclZone_t MT2063_ExclZones[MT2063_MAX_ZONES];
109 };
110
111 /*
112 * Parameter for function MT2063_SetPowerMask that specifies the power down
113 * of various sections of the MT2063.
114 */
115 enum MT2063_Mask_Bits {
116 MT2063_REG_SD = 0x0040, /* Shutdown regulator */
117 MT2063_SRO_SD = 0x0020, /* Shutdown SRO */
118 MT2063_AFC_SD = 0x0010, /* Shutdown AFC A/D */
119 MT2063_PD_SD = 0x0002, /* Enable power detector shutdown */
120 MT2063_PDADC_SD = 0x0001, /* Enable power detector A/D shutdown */
121 MT2063_VCO_SD = 0x8000, /* Enable VCO shutdown */
122 MT2063_LTX_SD = 0x4000, /* Enable LTX shutdown */
123 MT2063_LT1_SD = 0x2000, /* Enable LT1 shutdown */
124 MT2063_LNA_SD = 0x1000, /* Enable LNA shutdown */
125 MT2063_UPC_SD = 0x0800, /* Enable upconverter shutdown */
126 MT2063_DNC_SD = 0x0400, /* Enable downconverter shutdown */
127 MT2063_VGA_SD = 0x0200, /* Enable VGA shutdown */
128 MT2063_AMP_SD = 0x0100, /* Enable AMP shutdown */
129 MT2063_ALL_SD = 0xFF73, /* All shutdown bits for this tuner */
130 MT2063_NONE_SD = 0x0000 /* No shutdown bits */
131 };
132
133 /*
134 * Possible values for MT2063_DNC_OUTPUT
135 */
136 enum MT2063_DNC_Output_Enable {
137 MT2063_DNC_NONE = 0,
138 MT2063_DNC_1,
139 MT2063_DNC_2,
140 MT2063_DNC_BOTH
141 };
142
143 /*
144 * Two-wire serial bus subaddresses of the tuner registers.
145 * Also known as the tuner's register addresses.
146 */
147 enum MT2063_Register_Offsets {
148 MT2063_REG_PART_REV = 0, /* 0x00: Part/Rev Code */
149 MT2063_REG_LO1CQ_1, /* 0x01: LO1C Queued Byte 1 */
150 MT2063_REG_LO1CQ_2, /* 0x02: LO1C Queued Byte 2 */
151 MT2063_REG_LO2CQ_1, /* 0x03: LO2C Queued Byte 1 */
152 MT2063_REG_LO2CQ_2, /* 0x04: LO2C Queued Byte 2 */
153 MT2063_REG_LO2CQ_3, /* 0x05: LO2C Queued Byte 3 */
154 MT2063_REG_RSVD_06, /* 0x06: Reserved */
155 MT2063_REG_LO_STATUS, /* 0x07: LO Status */
156 MT2063_REG_FIFFC, /* 0x08: FIFF Center */
157 MT2063_REG_CLEARTUNE, /* 0x09: ClearTune Filter */
158 MT2063_REG_ADC_OUT, /* 0x0A: ADC_OUT */
159 MT2063_REG_LO1C_1, /* 0x0B: LO1C Byte 1 */
160 MT2063_REG_LO1C_2, /* 0x0C: LO1C Byte 2 */
161 MT2063_REG_LO2C_1, /* 0x0D: LO2C Byte 1 */
162 MT2063_REG_LO2C_2, /* 0x0E: LO2C Byte 2 */
163 MT2063_REG_LO2C_3, /* 0x0F: LO2C Byte 3 */
164 MT2063_REG_RSVD_10, /* 0x10: Reserved */
165 MT2063_REG_PWR_1, /* 0x11: PWR Byte 1 */
166 MT2063_REG_PWR_2, /* 0x12: PWR Byte 2 */
167 MT2063_REG_TEMP_STATUS, /* 0x13: Temp Status */
168 MT2063_REG_XO_STATUS, /* 0x14: Crystal Status */
169 MT2063_REG_RF_STATUS, /* 0x15: RF Attn Status */
170 MT2063_REG_FIF_STATUS, /* 0x16: FIF Attn Status */
171 MT2063_REG_LNA_OV, /* 0x17: LNA Attn Override */
172 MT2063_REG_RF_OV, /* 0x18: RF Attn Override */
173 MT2063_REG_FIF_OV, /* 0x19: FIF Attn Override */
174 MT2063_REG_LNA_TGT, /* 0x1A: Reserved */
175 MT2063_REG_PD1_TGT, /* 0x1B: Pwr Det 1 Target */
176 MT2063_REG_PD2_TGT, /* 0x1C: Pwr Det 2 Target */
177 MT2063_REG_RSVD_1D, /* 0x1D: Reserved */
178 MT2063_REG_RSVD_1E, /* 0x1E: Reserved */
179 MT2063_REG_RSVD_1F, /* 0x1F: Reserved */
180 MT2063_REG_RSVD_20, /* 0x20: Reserved */
181 MT2063_REG_BYP_CTRL, /* 0x21: Bypass Control */
182 MT2063_REG_RSVD_22, /* 0x22: Reserved */
183 MT2063_REG_RSVD_23, /* 0x23: Reserved */
184 MT2063_REG_RSVD_24, /* 0x24: Reserved */
185 MT2063_REG_RSVD_25, /* 0x25: Reserved */
186 MT2063_REG_RSVD_26, /* 0x26: Reserved */
187 MT2063_REG_RSVD_27, /* 0x27: Reserved */
188 MT2063_REG_FIFF_CTRL, /* 0x28: FIFF Control */
189 MT2063_REG_FIFF_OFFSET, /* 0x29: FIFF Offset */
190 MT2063_REG_CTUNE_CTRL, /* 0x2A: Reserved */
191 MT2063_REG_CTUNE_OV, /* 0x2B: Reserved */
192 MT2063_REG_CTRL_2C, /* 0x2C: Reserved */
193 MT2063_REG_FIFF_CTRL2, /* 0x2D: Fiff Control */
194 MT2063_REG_RSVD_2E, /* 0x2E: Reserved */
195 MT2063_REG_DNC_GAIN, /* 0x2F: DNC Control */
196 MT2063_REG_VGA_GAIN, /* 0x30: VGA Gain Ctrl */
197 MT2063_REG_RSVD_31, /* 0x31: Reserved */
198 MT2063_REG_TEMP_SEL, /* 0x32: Temperature Selection */
199 MT2063_REG_RSVD_33, /* 0x33: Reserved */
200 MT2063_REG_RSVD_34, /* 0x34: Reserved */
201 MT2063_REG_RSVD_35, /* 0x35: Reserved */
202 MT2063_REG_RSVD_36, /* 0x36: Reserved */
203 MT2063_REG_RSVD_37, /* 0x37: Reserved */
204 MT2063_REG_RSVD_38, /* 0x38: Reserved */
205 MT2063_REG_RSVD_39, /* 0x39: Reserved */
206 MT2063_REG_RSVD_3A, /* 0x3A: Reserved */
207 MT2063_REG_RSVD_3B, /* 0x3B: Reserved */
208 MT2063_REG_RSVD_3C, /* 0x3C: Reserved */
209 MT2063_REG_END_REGS
210 };
211
212 struct mt2063_state {
213 struct i2c_adapter *i2c;
214
215 bool init;
216
217 const struct mt2063_config *config;
218 struct dvb_tuner_ops ops;
219 struct dvb_frontend *frontend;
220
221 u32 frequency;
222 u32 srate;
223 u32 bandwidth;
224 u32 reference;
225
226 u32 tuner_id;
227 struct MT2063_AvoidSpursData_t AS_Data;
228 u32 f_IF1_actual;
229 u32 rcvr_mode;
230 u32 ctfilt_sw;
231 u32 CTFiltMax[31];
232 u32 num_regs;
233 u8 reg[MT2063_REG_END_REGS];
234 };
235
236 /*
237 * mt2063_write - Write data into the I2C bus
238 */
239 static int mt2063_write(struct mt2063_state *state, u8 reg, u8 *data, u32 len)
240 {
241 struct dvb_frontend *fe = state->frontend;
242 int ret;
243 u8 buf[60];
244 struct i2c_msg msg = {
245 .addr = state->config->tuner_address,
246 .flags = 0,
247 .buf = buf,
248 .len = len + 1
249 };
250
251 dprintk(2, "\n");
252
253 msg.buf[0] = reg;
254 memcpy(msg.buf + 1, data, len);
255
256 if (fe->ops.i2c_gate_ctrl)
257 fe->ops.i2c_gate_ctrl(fe, 1);
258 ret = i2c_transfer(state->i2c, &msg, 1);
259 if (fe->ops.i2c_gate_ctrl)
260 fe->ops.i2c_gate_ctrl(fe, 0);
261
262 if (ret < 0)
263 printk(KERN_ERR "%s error ret=%d\n", __func__, ret);
264
265 return ret;
266 }
267
268 /*
269 * mt2063_write - Write register data into the I2C bus, caching the value
270 */
271 static int mt2063_setreg(struct mt2063_state *state, u8 reg, u8 val)
272 {
273 int status;
274
275 dprintk(2, "\n");
276
277 if (reg >= MT2063_REG_END_REGS)
278 return -ERANGE;
279
280 status = mt2063_write(state, reg, &val, 1);
281 if (status < 0)
282 return status;
283
284 state->reg[reg] = val;
285
286 return 0;
287 }
288
289 /*
290 * mt2063_read - Read data from the I2C bus
291 */
292 static int mt2063_read(struct mt2063_state *state,
293 u8 subAddress, u8 *pData, u32 cnt)
294 {
295 int status = 0; /* Status to be returned */
296 struct dvb_frontend *fe = state->frontend;
297 u32 i = 0;
298
299 dprintk(2, "addr 0x%02x, cnt %d\n", subAddress, cnt);
300
301 if (fe->ops.i2c_gate_ctrl)
302 fe->ops.i2c_gate_ctrl(fe, 1);
303
304 for (i = 0; i < cnt; i++) {
305 u8 b0[] = { subAddress + i };
306 struct i2c_msg msg[] = {
307 {
308 .addr = state->config->tuner_address,
309 .flags = 0,
310 .buf = b0,
311 .len = 1
312 }, {
313 .addr = state->config->tuner_address,
314 .flags = I2C_M_RD,
315 .buf = pData + i,
316 .len = 1
317 }
318 };
319
320 status = i2c_transfer(state->i2c, msg, 2);
321 dprintk(2, "addr 0x%02x, ret = %d, val = 0x%02x\n",
322 subAddress + i, status, *(pData + i));
323 if (status < 0)
324 break;
325 }
326 if (fe->ops.i2c_gate_ctrl)
327 fe->ops.i2c_gate_ctrl(fe, 0);
328
329 if (status < 0)
330 printk(KERN_ERR "Can't read from address 0x%02x,\n",
331 subAddress + i);
332
333 return status;
334 }
335
336 /*
337 * FIXME: Is this really needed?
338 */
339 static int MT2063_Sleep(struct dvb_frontend *fe)
340 {
341 /*
342 * ToDo: Add code here to implement a OS blocking
343 */
344 msleep(100);
345
346 return 0;
347 }
348
349 /*
350 * Microtune spur avoidance
351 */
352
353 /* Implement ceiling, floor functions. */
354 #define ceil(n, d) (((n) < 0) ? (-((-(n))/(d))) : (n)/(d) + ((n)%(d) != 0))
355 #define floor(n, d) (((n) < 0) ? (-((-(n))/(d))) - ((n)%(d) != 0) : (n)/(d))
356
357 struct MT2063_FIFZone_t {
358 s32 min_;
359 s32 max_;
360 };
361
362 static struct MT2063_ExclZone_t *InsertNode(struct MT2063_AvoidSpursData_t
363 *pAS_Info,
364 struct MT2063_ExclZone_t *pPrevNode)
365 {
366 struct MT2063_ExclZone_t *pNode;
367
368 dprintk(2, "\n");
369
370 /* Check for a node in the free list */
371 if (pAS_Info->freeZones != NULL) {
372 /* Use one from the free list */
373 pNode = pAS_Info->freeZones;
374 pAS_Info->freeZones = pNode->next_;
375 } else {
376 /* Grab a node from the array */
377 pNode = &pAS_Info->MT2063_ExclZones[pAS_Info->nZones];
378 }
379
380 if (pPrevNode != NULL) {
381 pNode->next_ = pPrevNode->next_;
382 pPrevNode->next_ = pNode;
383 } else { /* insert at the beginning of the list */
384
385 pNode->next_ = pAS_Info->usedZones;
386 pAS_Info->usedZones = pNode;
387 }
388
389 pAS_Info->nZones++;
390 return pNode;
391 }
392
393 static struct MT2063_ExclZone_t *RemoveNode(struct MT2063_AvoidSpursData_t
394 *pAS_Info,
395 struct MT2063_ExclZone_t *pPrevNode,
396 struct MT2063_ExclZone_t
397 *pNodeToRemove)
398 {
399 struct MT2063_ExclZone_t *pNext = pNodeToRemove->next_;
400
401 dprintk(2, "\n");
402
403 /* Make previous node point to the subsequent node */
404 if (pPrevNode != NULL)
405 pPrevNode->next_ = pNext;
406
407 /* Add pNodeToRemove to the beginning of the freeZones */
408 pNodeToRemove->next_ = pAS_Info->freeZones;
409 pAS_Info->freeZones = pNodeToRemove;
410
411 /* Decrement node count */
412 pAS_Info->nZones--;
413
414 return pNext;
415 }
416
417 /*
418 * MT_AddExclZone()
419 *
420 * Add (and merge) an exclusion zone into the list.
421 * If the range (f_min, f_max) is totally outside the
422 * 1st IF BW, ignore the entry.
423 * If the range (f_min, f_max) is negative, ignore the entry.
424 */
425 static void MT2063_AddExclZone(struct MT2063_AvoidSpursData_t *pAS_Info,
426 u32 f_min, u32 f_max)
427 {
428 struct MT2063_ExclZone_t *pNode = pAS_Info->usedZones;
429 struct MT2063_ExclZone_t *pPrev = NULL;
430 struct MT2063_ExclZone_t *pNext = NULL;
431
432 dprintk(2, "\n");
433
434 /* Check to see if this overlaps the 1st IF filter */
435 if ((f_max > (pAS_Info->f_if1_Center - (pAS_Info->f_if1_bw / 2)))
436 && (f_min < (pAS_Info->f_if1_Center + (pAS_Info->f_if1_bw / 2)))
437 && (f_min < f_max)) {
438 /*
439 * 1 2 3 4 5 6
440 *
441 * New entry: |---| |--| |--| |-| |---| |--|
442 * or or or or or
443 * Existing: |--| |--| |--| |---| |-| |--|
444 */
445
446 /* Check for our place in the list */
447 while ((pNode != NULL) && (pNode->max_ < f_min)) {
448 pPrev = pNode;
449 pNode = pNode->next_;
450 }
451
452 if ((pNode != NULL) && (pNode->min_ < f_max)) {
453 /* Combine me with pNode */
454 if (f_min < pNode->min_)
455 pNode->min_ = f_min;
456 if (f_max > pNode->max_)
457 pNode->max_ = f_max;
458 } else {
459 pNode = InsertNode(pAS_Info, pPrev);
460 pNode->min_ = f_min;
461 pNode->max_ = f_max;
462 }
463
464 /* Look for merging possibilities */
465 pNext = pNode->next_;
466 while ((pNext != NULL) && (pNext->min_ < pNode->max_)) {
467 if (pNext->max_ > pNode->max_)
468 pNode->max_ = pNext->max_;
469 /* Remove pNext, return ptr to pNext->next */
470 pNext = RemoveNode(pAS_Info, pNode, pNext);
471 }
472 }
473 }
474
475 /*
476 * Reset all exclusion zones.
477 * Add zones to protect the PLL FracN regions near zero
478 */
479 static void MT2063_ResetExclZones(struct MT2063_AvoidSpursData_t *pAS_Info)
480 {
481 u32 center;
482
483 dprintk(2, "\n");
484
485 pAS_Info->nZones = 0; /* this clears the used list */
486 pAS_Info->usedZones = NULL; /* reset ptr */
487 pAS_Info->freeZones = NULL; /* reset ptr */
488
489 center =
490 pAS_Info->f_ref *
491 ((pAS_Info->f_if1_Center - pAS_Info->f_if1_bw / 2 +
492 pAS_Info->f_in) / pAS_Info->f_ref) - pAS_Info->f_in;
493 while (center <
494 pAS_Info->f_if1_Center + pAS_Info->f_if1_bw / 2 +
495 pAS_Info->f_LO1_FracN_Avoid) {
496 /* Exclude LO1 FracN */
497 MT2063_AddExclZone(pAS_Info,
498 center - pAS_Info->f_LO1_FracN_Avoid,
499 center - 1);
500 MT2063_AddExclZone(pAS_Info, center + 1,
501 center + pAS_Info->f_LO1_FracN_Avoid);
502 center += pAS_Info->f_ref;
503 }
504
505 center =
506 pAS_Info->f_ref *
507 ((pAS_Info->f_if1_Center - pAS_Info->f_if1_bw / 2 -
508 pAS_Info->f_out) / pAS_Info->f_ref) + pAS_Info->f_out;
509 while (center <
510 pAS_Info->f_if1_Center + pAS_Info->f_if1_bw / 2 +
511 pAS_Info->f_LO2_FracN_Avoid) {
512 /* Exclude LO2 FracN */
513 MT2063_AddExclZone(pAS_Info,
514 center - pAS_Info->f_LO2_FracN_Avoid,
515 center - 1);
516 MT2063_AddExclZone(pAS_Info, center + 1,
517 center + pAS_Info->f_LO2_FracN_Avoid);
518 center += pAS_Info->f_ref;
519 }
520
521 if (MT2063_EXCLUDE_US_DECT_FREQUENCIES(pAS_Info->avoidDECT)) {
522 /* Exclude LO1 values that conflict with DECT channels */
523 MT2063_AddExclZone(pAS_Info, 1920836000 - pAS_Info->f_in, 1922236000 - pAS_Info->f_in); /* Ctr = 1921.536 */
524 MT2063_AddExclZone(pAS_Info, 1922564000 - pAS_Info->f_in, 1923964000 - pAS_Info->f_in); /* Ctr = 1923.264 */
525 MT2063_AddExclZone(pAS_Info, 1924292000 - pAS_Info->f_in, 1925692000 - pAS_Info->f_in); /* Ctr = 1924.992 */
526 MT2063_AddExclZone(pAS_Info, 1926020000 - pAS_Info->f_in, 1927420000 - pAS_Info->f_in); /* Ctr = 1926.720 */
527 MT2063_AddExclZone(pAS_Info, 1927748000 - pAS_Info->f_in, 1929148000 - pAS_Info->f_in); /* Ctr = 1928.448 */
528 }
529
530 if (MT2063_EXCLUDE_EURO_DECT_FREQUENCIES(pAS_Info->avoidDECT)) {
531 MT2063_AddExclZone(pAS_Info, 1896644000 - pAS_Info->f_in, 1898044000 - pAS_Info->f_in); /* Ctr = 1897.344 */
532 MT2063_AddExclZone(pAS_Info, 1894916000 - pAS_Info->f_in, 1896316000 - pAS_Info->f_in); /* Ctr = 1895.616 */
533 MT2063_AddExclZone(pAS_Info, 1893188000 - pAS_Info->f_in, 1894588000 - pAS_Info->f_in); /* Ctr = 1893.888 */
534 MT2063_AddExclZone(pAS_Info, 1891460000 - pAS_Info->f_in, 1892860000 - pAS_Info->f_in); /* Ctr = 1892.16 */
535 MT2063_AddExclZone(pAS_Info, 1889732000 - pAS_Info->f_in, 1891132000 - pAS_Info->f_in); /* Ctr = 1890.432 */
536 MT2063_AddExclZone(pAS_Info, 1888004000 - pAS_Info->f_in, 1889404000 - pAS_Info->f_in); /* Ctr = 1888.704 */
537 MT2063_AddExclZone(pAS_Info, 1886276000 - pAS_Info->f_in, 1887676000 - pAS_Info->f_in); /* Ctr = 1886.976 */
538 MT2063_AddExclZone(pAS_Info, 1884548000 - pAS_Info->f_in, 1885948000 - pAS_Info->f_in); /* Ctr = 1885.248 */
539 MT2063_AddExclZone(pAS_Info, 1882820000 - pAS_Info->f_in, 1884220000 - pAS_Info->f_in); /* Ctr = 1883.52 */
540 MT2063_AddExclZone(pAS_Info, 1881092000 - pAS_Info->f_in, 1882492000 - pAS_Info->f_in); /* Ctr = 1881.792 */
541 }
542 }
543
544 /*
545 * MT_ChooseFirstIF - Choose the best available 1st IF
546 * If f_Desired is not excluded, choose that first.
547 * Otherwise, return the value closest to f_Center that is
548 * not excluded
549 */
550 static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info)
551 {
552 /*
553 * Update "f_Desired" to be the nearest "combinational-multiple" of
554 * "f_LO1_Step".
555 * The resulting number, F_LO1 must be a multiple of f_LO1_Step.
556 * And F_LO1 is the arithmetic sum of f_in + f_Center.
557 * Neither f_in, nor f_Center must be a multiple of f_LO1_Step.
558 * However, the sum must be.
559 */
560 const u32 f_Desired =
561 pAS_Info->f_LO1_Step *
562 ((pAS_Info->f_if1_Request + pAS_Info->f_in +
563 pAS_Info->f_LO1_Step / 2) / pAS_Info->f_LO1_Step) -
564 pAS_Info->f_in;
565 const u32 f_Step =
566 (pAS_Info->f_LO1_Step >
567 pAS_Info->f_LO2_Step) ? pAS_Info->f_LO1_Step : pAS_Info->
568 f_LO2_Step;
569 u32 f_Center;
570 s32 i;
571 s32 j = 0;
572 u32 bDesiredExcluded = 0;
573 u32 bZeroExcluded = 0;
574 s32 tmpMin, tmpMax;
575 s32 bestDiff;
576 struct MT2063_ExclZone_t *pNode = pAS_Info->usedZones;
577 struct MT2063_FIFZone_t zones[MT2063_MAX_ZONES];
578
579 dprintk(2, "\n");
580
581 if (pAS_Info->nZones == 0)
582 return f_Desired;
583
584 /*
585 * f_Center needs to be an integer multiple of f_Step away
586 * from f_Desired
587 */
588 if (pAS_Info->f_if1_Center > f_Desired)
589 f_Center =
590 f_Desired +
591 f_Step *
592 ((pAS_Info->f_if1_Center - f_Desired +
593 f_Step / 2) / f_Step);
594 else
595 f_Center =
596 f_Desired -
597 f_Step *
598 ((f_Desired - pAS_Info->f_if1_Center +
599 f_Step / 2) / f_Step);
600
601 /*
602 * Take MT_ExclZones, center around f_Center and change the
603 * resolution to f_Step
604 */
605 while (pNode != NULL) {
606 /* floor function */
607 tmpMin =
608 floor((s32) (pNode->min_ - f_Center), (s32) f_Step);
609
610 /* ceil function */
611 tmpMax =
612 ceil((s32) (pNode->max_ - f_Center), (s32) f_Step);
613
614 if ((pNode->min_ < f_Desired) && (pNode->max_ > f_Desired))
615 bDesiredExcluded = 1;
616
617 if ((tmpMin < 0) && (tmpMax > 0))
618 bZeroExcluded = 1;
619
620 /* See if this zone overlaps the previous */
621 if ((j > 0) && (tmpMin < zones[j - 1].max_))
622 zones[j - 1].max_ = tmpMax;
623 else {
624 /* Add new zone */
625 zones[j].min_ = tmpMin;
626 zones[j].max_ = tmpMax;
627 j++;
628 }
629 pNode = pNode->next_;
630 }
631
632 /*
633 * If the desired is okay, return with it
634 */
635 if (bDesiredExcluded == 0)
636 return f_Desired;
637
638 /*
639 * If the desired is excluded and the center is okay, return with it
640 */
641 if (bZeroExcluded == 0)
642 return f_Center;
643
644 /* Find the value closest to 0 (f_Center) */
645 bestDiff = zones[0].min_;
646 for (i = 0; i < j; i++) {
647 if (abs(zones[i].min_) < abs(bestDiff))
648 bestDiff = zones[i].min_;
649 if (abs(zones[i].max_) < abs(bestDiff))
650 bestDiff = zones[i].max_;
651 }
652
653 if (bestDiff < 0)
654 return f_Center - ((u32) (-bestDiff) * f_Step);
655
656 return f_Center + (bestDiff * f_Step);
657 }
658
659 /**
660 * IsSpurInBand() - Checks to see if a spur will be present within the IF's
661 * bandwidth. (fIFOut +/- fIFBW, -fIFOut +/- fIFBW)
662 *
663 * ma mb mc md
664 * <--+-+-+-------------------+-------------------+-+-+-->
665 * | ^ 0 ^ |
666 * ^ b=-fIFOut+fIFBW/2 -b=+fIFOut-fIFBW/2 ^
667 * a=-fIFOut-fIFBW/2 -a=+fIFOut+fIFBW/2
668 *
669 * Note that some equations are doubled to prevent round-off
670 * problems when calculating fIFBW/2
671 *
672 * @pAS_Info: Avoid Spurs information block
673 * @fm: If spur, amount f_IF1 has to move negative
674 * @fp: If spur, amount f_IF1 has to move positive
675 *
676 * Returns 1 if an LO spur would be present, otherwise 0.
677 */
678 static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info,
679 u32 *fm, u32 * fp)
680 {
681 /*
682 ** Calculate LO frequency settings.
683 */
684 u32 n, n0;
685 const u32 f_LO1 = pAS_Info->f_LO1;
686 const u32 f_LO2 = pAS_Info->f_LO2;
687 const u32 d = pAS_Info->f_out + pAS_Info->f_out_bw / 2;
688 const u32 c = d - pAS_Info->f_out_bw;
689 const u32 f = pAS_Info->f_zif_bw / 2;
690 const u32 f_Scale = (f_LO1 / (UINT_MAX / 2 / pAS_Info->maxH1)) + 1;
691 s32 f_nsLO1, f_nsLO2;
692 s32 f_Spur;
693 u32 ma, mb, mc, md, me, mf;
694 u32 lo_gcd, gd_Scale, gc_Scale, gf_Scale, hgds, hgfs, hgcs;
695
696 dprintk(2, "\n");
697
698 *fm = 0;
699
700 /*
701 ** For each edge (d, c & f), calculate a scale, based on the gcd
702 ** of f_LO1, f_LO2 and the edge value. Use the larger of this
703 ** gcd-based scale factor or f_Scale.
704 */
705 lo_gcd = gcd(f_LO1, f_LO2);
706 gd_Scale = max((u32) gcd(lo_gcd, d), f_Scale);
707 hgds = gd_Scale / 2;
708 gc_Scale = max((u32) gcd(lo_gcd, c), f_Scale);
709 hgcs = gc_Scale / 2;
710 gf_Scale = max((u32) gcd(lo_gcd, f), f_Scale);
711 hgfs = gf_Scale / 2;
712
713 n0 = DIV_ROUND_UP(f_LO2 - d, f_LO1 - f_LO2);
714
715 /* Check out all multiples of LO1 from n0 to m_maxLOSpurHarmonic */
716 for (n = n0; n <= pAS_Info->maxH1; ++n) {
717 md = (n * ((f_LO1 + hgds) / gd_Scale) -
718 ((d + hgds) / gd_Scale)) / ((f_LO2 + hgds) / gd_Scale);
719
720 /* If # fLO2 harmonics > m_maxLOSpurHarmonic, then no spurs present */
721 if (md >= pAS_Info->maxH1)
722 break;
723
724 ma = (n * ((f_LO1 + hgds) / gd_Scale) +
725 ((d + hgds) / gd_Scale)) / ((f_LO2 + hgds) / gd_Scale);
726
727 /* If no spurs between +/- (f_out + f_IFBW/2), then try next harmonic */
728 if (md == ma)
729 continue;
730
731 mc = (n * ((f_LO1 + hgcs) / gc_Scale) -
732 ((c + hgcs) / gc_Scale)) / ((f_LO2 + hgcs) / gc_Scale);
733 if (mc != md) {
734 f_nsLO1 = (s32) (n * (f_LO1 / gc_Scale));
735 f_nsLO2 = (s32) (mc * (f_LO2 / gc_Scale));
736 f_Spur =
737 (gc_Scale * (f_nsLO1 - f_nsLO2)) +
738 n * (f_LO1 % gc_Scale) - mc * (f_LO2 % gc_Scale);
739
740 *fp = ((f_Spur - (s32) c) / (mc - n)) + 1;
741 *fm = (((s32) d - f_Spur) / (mc - n)) + 1;
742 return 1;
743 }
744
745 /* Location of Zero-IF-spur to be checked */
746 me = (n * ((f_LO1 + hgfs) / gf_Scale) +
747 ((f + hgfs) / gf_Scale)) / ((f_LO2 + hgfs) / gf_Scale);
748 mf = (n * ((f_LO1 + hgfs) / gf_Scale) -
749 ((f + hgfs) / gf_Scale)) / ((f_LO2 + hgfs) / gf_Scale);
750 if (me != mf) {
751 f_nsLO1 = n * (f_LO1 / gf_Scale);
752 f_nsLO2 = me * (f_LO2 / gf_Scale);
753 f_Spur =
754 (gf_Scale * (f_nsLO1 - f_nsLO2)) +
755 n * (f_LO1 % gf_Scale) - me * (f_LO2 % gf_Scale);
756
757 *fp = ((f_Spur + (s32) f) / (me - n)) + 1;
758 *fm = (((s32) f - f_Spur) / (me - n)) + 1;
759 return 1;
760 }
761
762 mb = (n * ((f_LO1 + hgcs) / gc_Scale) +
763 ((c + hgcs) / gc_Scale)) / ((f_LO2 + hgcs) / gc_Scale);
764 if (ma != mb) {
765 f_nsLO1 = n * (f_LO1 / gc_Scale);
766 f_nsLO2 = ma * (f_LO2 / gc_Scale);
767 f_Spur =
768 (gc_Scale * (f_nsLO1 - f_nsLO2)) +
769 n * (f_LO1 % gc_Scale) - ma * (f_LO2 % gc_Scale);
770
771 *fp = (((s32) d + f_Spur) / (ma - n)) + 1;
772 *fm = (-(f_Spur + (s32) c) / (ma - n)) + 1;
773 return 1;
774 }
775 }
776
777 /* No spurs found */
778 return 0;
779 }
780
781 /*
782 * MT_AvoidSpurs() - Main entry point to avoid spurs.
783 * Checks for existing spurs in present LO1, LO2 freqs
784 * and if present, chooses spur-free LO1, LO2 combination
785 * that tunes the same input/output frequencies.
786 */
787 static u32 MT2063_AvoidSpurs(struct MT2063_AvoidSpursData_t *pAS_Info)
788 {
789 int status = 0;
790 u32 fm, fp; /* restricted range on LO's */
791 pAS_Info->bSpurAvoided = 0;
792 pAS_Info->nSpursFound = 0;
793
794 dprintk(2, "\n");
795
796 if (pAS_Info->maxH1 == 0)
797 return 0;
798
799 /*
800 * Avoid LO Generated Spurs
801 *
802 * Make sure that have no LO-related spurs within the IF output
803 * bandwidth.
804 *
805 * If there is an LO spur in this band, start at the current IF1 frequency
806 * and work out until we find a spur-free frequency or run up against the
807 * 1st IF SAW band edge. Use temporary copies of fLO1 and fLO2 so that they
808 * will be unchanged if a spur-free setting is not found.
809 */
810 pAS_Info->bSpurPresent = IsSpurInBand(pAS_Info, &fm, &fp);
811 if (pAS_Info->bSpurPresent) {
812 u32 zfIF1 = pAS_Info->f_LO1 - pAS_Info->f_in; /* current attempt at a 1st IF */
813 u32 zfLO1 = pAS_Info->f_LO1; /* current attempt at an LO1 freq */
814 u32 zfLO2 = pAS_Info->f_LO2; /* current attempt at an LO2 freq */
815 u32 delta_IF1;
816 u32 new_IF1;
817
818 /*
819 ** Spur was found, attempt to find a spur-free 1st IF
820 */
821 do {
822 pAS_Info->nSpursFound++;
823
824 /* Raise f_IF1_upper, if needed */
825 MT2063_AddExclZone(pAS_Info, zfIF1 - fm, zfIF1 + fp);
826
827 /* Choose next IF1 that is closest to f_IF1_CENTER */
828 new_IF1 = MT2063_ChooseFirstIF(pAS_Info);
829
830 if (new_IF1 > zfIF1) {
831 pAS_Info->f_LO1 += (new_IF1 - zfIF1);
832 pAS_Info->f_LO2 += (new_IF1 - zfIF1);
833 } else {
834 pAS_Info->f_LO1 -= (zfIF1 - new_IF1);
835 pAS_Info->f_LO2 -= (zfIF1 - new_IF1);
836 }
837 zfIF1 = new_IF1;
838
839 if (zfIF1 > pAS_Info->f_if1_Center)
840 delta_IF1 = zfIF1 - pAS_Info->f_if1_Center;
841 else
842 delta_IF1 = pAS_Info->f_if1_Center - zfIF1;
843
844 pAS_Info->bSpurPresent = IsSpurInBand(pAS_Info, &fm, &fp);
845 /*
846 * Continue while the new 1st IF is still within the 1st IF bandwidth
847 * and there is a spur in the band (again)
848 */
849 } while ((2 * delta_IF1 + pAS_Info->f_out_bw <= pAS_Info->f_if1_bw) && pAS_Info->bSpurPresent);
850
851 /*
852 * Use the LO-spur free values found. If the search went all
853 * the way to the 1st IF band edge and always found spurs, just
854 * leave the original choice. It's as "good" as any other.
855 */
856 if (pAS_Info->bSpurPresent == 1) {
857 status |= MT2063_SPUR_PRESENT_ERR;
858 pAS_Info->f_LO1 = zfLO1;
859 pAS_Info->f_LO2 = zfLO2;
860 } else
861 pAS_Info->bSpurAvoided = 1;
862 }
863
864 status |=
865 ((pAS_Info->
866 nSpursFound << MT2063_SPUR_SHIFT) & MT2063_SPUR_CNT_MASK);
867
868 return status;
869 }
870
871 /*
872 * Constants used by the tuning algorithm
873 */
874 #define MT2063_REF_FREQ (16000000UL) /* Reference oscillator Frequency (in Hz) */
875 #define MT2063_IF1_BW (22000000UL) /* The IF1 filter bandwidth (in Hz) */
876 #define MT2063_TUNE_STEP_SIZE (50000UL) /* Tune in steps of 50 kHz */
877 #define MT2063_SPUR_STEP_HZ (250000UL) /* Step size (in Hz) to move IF1 when avoiding spurs */
878 #define MT2063_ZIF_BW (2000000UL) /* Zero-IF spur-free bandwidth (in Hz) */
879 #define MT2063_MAX_HARMONICS_1 (15UL) /* Highest intra-tuner LO Spur Harmonic to be avoided */
880 #define MT2063_MAX_HARMONICS_2 (5UL) /* Highest inter-tuner LO Spur Harmonic to be avoided */
881 #define MT2063_MIN_LO_SEP (1000000UL) /* Minimum inter-tuner LO frequency separation */
882 #define MT2063_LO1_FRACN_AVOID (0UL) /* LO1 FracN numerator avoid region (in Hz) */
883 #define MT2063_LO2_FRACN_AVOID (199999UL) /* LO2 FracN numerator avoid region (in Hz) */
884 #define MT2063_MIN_FIN_FREQ (44000000UL) /* Minimum input frequency (in Hz) */
885 #define MT2063_MAX_FIN_FREQ (1100000000UL) /* Maximum input frequency (in Hz) */
886 #define MT2063_MIN_FOUT_FREQ (36000000UL) /* Minimum output frequency (in Hz) */
887 #define MT2063_MAX_FOUT_FREQ (57000000UL) /* Maximum output frequency (in Hz) */
888 #define MT2063_MIN_DNC_FREQ (1293000000UL) /* Minimum LO2 frequency (in Hz) */
889 #define MT2063_MAX_DNC_FREQ (1614000000UL) /* Maximum LO2 frequency (in Hz) */
890 #define MT2063_MIN_UPC_FREQ (1396000000UL) /* Minimum LO1 frequency (in Hz) */
891 #define MT2063_MAX_UPC_FREQ (2750000000UL) /* Maximum LO1 frequency (in Hz) */
892
893 /*
894 * Define the supported Part/Rev codes for the MT2063
895 */
896 #define MT2063_B0 (0x9B)
897 #define MT2063_B1 (0x9C)
898 #define MT2063_B2 (0x9D)
899 #define MT2063_B3 (0x9E)
900
901 /**
902 * mt2063_lockStatus - Checks to see if LO1 and LO2 are locked
903 *
904 * @state: struct mt2063_state pointer
905 *
906 * This function returns 0, if no lock, 1 if locked and a value < 1 if error
907 */
908 static int mt2063_lockStatus(struct mt2063_state *state)
909 {
910 const u32 nMaxWait = 100; /* wait a maximum of 100 msec */
911 const u32 nPollRate = 2; /* poll status bits every 2 ms */
912 const u32 nMaxLoops = nMaxWait / nPollRate;
913 const u8 LO1LK = 0x80;
914 u8 LO2LK = 0x08;
915 int status;
916 u32 nDelays = 0;
917
918 dprintk(2, "\n");
919
920 /* LO2 Lock bit was in a different place for B0 version */
921 if (state->tuner_id == MT2063_B0)
922 LO2LK = 0x40;
923
924 do {
925 status = mt2063_read(state, MT2063_REG_LO_STATUS,
926 &state->reg[MT2063_REG_LO_STATUS], 1);
927
928 if (status < 0)
929 return status;
930
931 if ((state->reg[MT2063_REG_LO_STATUS] & (LO1LK | LO2LK)) ==
932 (LO1LK | LO2LK)) {
933 return TUNER_STATUS_LOCKED | TUNER_STATUS_STEREO;
934 }
935 msleep(nPollRate); /* Wait between retries */
936 } while (++nDelays < nMaxLoops);
937
938 /*
939 * Got no lock or partial lock
940 */
941 return 0;
942 }
943
944 /*
945 * Constants for setting receiver modes.
946 * (6 modes defined at this time, enumerated by mt2063_delivery_sys)
947 * (DNC1GC & DNC2GC are the values, which are used, when the specific
948 * DNC Output is selected, the other is always off)
949 *
950 * enum mt2063_delivery_sys
951 * -------------+----------------------------------------------
952 * Mode 0 : | MT2063_CABLE_QAM
953 * Mode 1 : | MT2063_CABLE_ANALOG
954 * Mode 2 : | MT2063_OFFAIR_COFDM
955 * Mode 3 : | MT2063_OFFAIR_COFDM_SAWLESS
956 * Mode 4 : | MT2063_OFFAIR_ANALOG
957 * Mode 5 : | MT2063_OFFAIR_8VSB
958 * --------------+----------------------------------------------
959 *
960 * |<---------- Mode -------------->|
961 * Reg Field | 0 | 1 | 2 | 3 | 4 | 5 |
962 * ------------+-----+-----+-----+-----+-----+-----+
963 * RFAGCen | OFF | OFF | OFF | OFF | OFF | OFF
964 * LNARin | 0 | 0 | 3 | 3 | 3 | 3
965 * FIFFQen | 1 | 1 | 1 | 1 | 1 | 1
966 * FIFFq | 0 | 0 | 0 | 0 | 0 | 0
967 * DNC1gc | 0 | 0 | 0 | 0 | 0 | 0
968 * DNC2gc | 0 | 0 | 0 | 0 | 0 | 0
969 * GCU Auto | 1 | 1 | 1 | 1 | 1 | 1
970 * LNA max Atn | 31 | 31 | 31 | 31 | 31 | 31
971 * LNA Target | 44 | 43 | 43 | 43 | 43 | 43
972 * ign RF Ovl | 0 | 0 | 0 | 0 | 0 | 0
973 * RF max Atn | 31 | 31 | 31 | 31 | 31 | 31
974 * PD1 Target | 36 | 36 | 38 | 38 | 36 | 38
975 * ign FIF Ovl | 0 | 0 | 0 | 0 | 0 | 0
976 * FIF max Atn | 5 | 5 | 5 | 5 | 5 | 5
977 * PD2 Target | 40 | 33 | 42 | 42 | 33 | 42
978 */
979
980 enum mt2063_delivery_sys {
981 MT2063_CABLE_QAM = 0,
982 MT2063_CABLE_ANALOG,
983 MT2063_OFFAIR_COFDM,
984 MT2063_OFFAIR_COFDM_SAWLESS,
985 MT2063_OFFAIR_ANALOG,
986 MT2063_OFFAIR_8VSB,
987 MT2063_NUM_RCVR_MODES
988 };
989
990 static const char *mt2063_mode_name[] = {
991 [MT2063_CABLE_QAM] = "digital cable",
992 [MT2063_CABLE_ANALOG] = "analog cable",
993 [MT2063_OFFAIR_COFDM] = "digital offair",
994 [MT2063_OFFAIR_COFDM_SAWLESS] = "digital offair without SAW",
995 [MT2063_OFFAIR_ANALOG] = "analog offair",
996 [MT2063_OFFAIR_8VSB] = "analog offair 8vsb",
997 };
998
999 static const u8 RFAGCEN[] = { 0, 0, 0, 0, 0, 0 };
1000 static const u8 LNARIN[] = { 0, 0, 3, 3, 3, 3 };
1001 static const u8 FIFFQEN[] = { 1, 1, 1, 1, 1, 1 };
1002 static const u8 FIFFQ[] = { 0, 0, 0, 0, 0, 0 };
1003 static const u8 DNC1GC[] = { 0, 0, 0, 0, 0, 0 };
1004 static const u8 DNC2GC[] = { 0, 0, 0, 0, 0, 0 };
1005 static const u8 ACLNAMAX[] = { 31, 31, 31, 31, 31, 31 };
1006 static const u8 LNATGT[] = { 44, 43, 43, 43, 43, 43 };
1007 static const u8 RFOVDIS[] = { 0, 0, 0, 0, 0, 0 };
1008 static const u8 ACRFMAX[] = { 31, 31, 31, 31, 31, 31 };
1009 static const u8 PD1TGT[] = { 36, 36, 38, 38, 36, 38 };
1010 static const u8 FIFOVDIS[] = { 0, 0, 0, 0, 0, 0 };
1011 static const u8 ACFIFMAX[] = { 29, 29, 29, 29, 29, 29 };
1012 static const u8 PD2TGT[] = { 40, 33, 38, 42, 30, 38 };
1013
1014 /*
1015 * mt2063_set_dnc_output_enable()
1016 */
1017 static u32 mt2063_get_dnc_output_enable(struct mt2063_state *state,
1018 enum MT2063_DNC_Output_Enable *pValue)
1019 {
1020 dprintk(2, "\n");
1021
1022 if ((state->reg[MT2063_REG_DNC_GAIN] & 0x03) == 0x03) { /* if DNC1 is off */
1023 if ((state->reg[MT2063_REG_VGA_GAIN] & 0x03) == 0x03) /* if DNC2 is off */
1024 *pValue = MT2063_DNC_NONE;
1025 else
1026 *pValue = MT2063_DNC_2;
1027 } else { /* DNC1 is on */
1028 if ((state->reg[MT2063_REG_VGA_GAIN] & 0x03) == 0x03) /* if DNC2 is off */
1029 *pValue = MT2063_DNC_1;
1030 else
1031 *pValue = MT2063_DNC_BOTH;
1032 }
1033 return 0;
1034 }
1035
1036 /*
1037 * mt2063_set_dnc_output_enable()
1038 */
1039 static u32 mt2063_set_dnc_output_enable(struct mt2063_state *state,
1040 enum MT2063_DNC_Output_Enable nValue)
1041 {
1042 int status = 0; /* Status to be returned */
1043 u8 val = 0;
1044
1045 dprintk(2, "\n");
1046
1047 /* selects, which DNC output is used */
1048 switch (nValue) {
1049 case MT2063_DNC_NONE:
1050 val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | 0x03; /* Set DNC1GC=3 */
1051 if (state->reg[MT2063_REG_DNC_GAIN] !=
1052 val)
1053 status |=
1054 mt2063_setreg(state,
1055 MT2063_REG_DNC_GAIN,
1056 val);
1057
1058 val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | 0x03; /* Set DNC2GC=3 */
1059 if (state->reg[MT2063_REG_VGA_GAIN] !=
1060 val)
1061 status |=
1062 mt2063_setreg(state,
1063 MT2063_REG_VGA_GAIN,
1064 val);
1065
1066 val = (state->reg[MT2063_REG_RSVD_20] & ~0x40); /* Set PD2MUX=0 */
1067 if (state->reg[MT2063_REG_RSVD_20] !=
1068 val)
1069 status |=
1070 mt2063_setreg(state,
1071 MT2063_REG_RSVD_20,
1072 val);
1073
1074 break;
1075 case MT2063_DNC_1:
1076 val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | (DNC1GC[state->rcvr_mode] & 0x03); /* Set DNC1GC=x */
1077 if (state->reg[MT2063_REG_DNC_GAIN] !=
1078 val)
1079 status |=
1080 mt2063_setreg(state,
1081 MT2063_REG_DNC_GAIN,
1082 val);
1083
1084 val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | 0x03; /* Set DNC2GC=3 */
1085 if (state->reg[MT2063_REG_VGA_GAIN] !=
1086 val)
1087 status |=
1088 mt2063_setreg(state,
1089 MT2063_REG_VGA_GAIN,
1090 val);
1091
1092 val = (state->reg[MT2063_REG_RSVD_20] & ~0x40); /* Set PD2MUX=0 */
1093 if (state->reg[MT2063_REG_RSVD_20] !=
1094 val)
1095 status |=
1096 mt2063_setreg(state,
1097 MT2063_REG_RSVD_20,
1098 val);
1099
1100 break;
1101 case MT2063_DNC_2:
1102 val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | 0x03; /* Set DNC1GC=3 */
1103 if (state->reg[MT2063_REG_DNC_GAIN] !=
1104 val)
1105 status |=
1106 mt2063_setreg(state,
1107 MT2063_REG_DNC_GAIN,
1108 val);
1109
1110 val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | (DNC2GC[state->rcvr_mode] & 0x03); /* Set DNC2GC=x */
1111 if (state->reg[MT2063_REG_VGA_GAIN] !=
1112 val)
1113 status |=
1114 mt2063_setreg(state,
1115 MT2063_REG_VGA_GAIN,
1116 val);
1117
1118 val = (state->reg[MT2063_REG_RSVD_20] | 0x40); /* Set PD2MUX=1 */
1119 if (state->reg[MT2063_REG_RSVD_20] !=
1120 val)
1121 status |=
1122 mt2063_setreg(state,
1123 MT2063_REG_RSVD_20,
1124 val);
1125
1126 break;
1127 case MT2063_DNC_BOTH:
1128 val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | (DNC1GC[state->rcvr_mode] & 0x03); /* Set DNC1GC=x */
1129 if (state->reg[MT2063_REG_DNC_GAIN] !=
1130 val)
1131 status |=
1132 mt2063_setreg(state,
1133 MT2063_REG_DNC_GAIN,
1134 val);
1135
1136 val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | (DNC2GC[state->rcvr_mode] & 0x03); /* Set DNC2GC=x */
1137 if (state->reg[MT2063_REG_VGA_GAIN] !=
1138 val)
1139 status |=
1140 mt2063_setreg(state,
1141 MT2063_REG_VGA_GAIN,
1142 val);
1143
1144 val = (state->reg[MT2063_REG_RSVD_20] | 0x40); /* Set PD2MUX=1 */
1145 if (state->reg[MT2063_REG_RSVD_20] !=
1146 val)
1147 status |=
1148 mt2063_setreg(state,
1149 MT2063_REG_RSVD_20,
1150 val);
1151
1152 break;
1153 default:
1154 break;
1155 }
1156
1157 return status;
1158 }
1159
1160 /*
1161 * MT2063_SetReceiverMode() - Set the MT2063 receiver mode, according with
1162 * the selected enum mt2063_delivery_sys type.
1163 *
1164 * (DNC1GC & DNC2GC are the values, which are used, when the specific
1165 * DNC Output is selected, the other is always off)
1166 *
1167 * @state: ptr to mt2063_state structure
1168 * @Mode: desired receiver delivery system
1169 *
1170 * Note: Register cache must be valid for it to work
1171 */
1172
1173 static u32 MT2063_SetReceiverMode(struct mt2063_state *state,
1174 enum mt2063_delivery_sys Mode)
1175 {
1176 int status = 0; /* Status to be returned */
1177 u8 val;
1178 u32 longval;
1179
1180 dprintk(2, "\n");
1181
1182 if (Mode >= MT2063_NUM_RCVR_MODES)
1183 status = -ERANGE;
1184
1185 /* RFAGCen */
1186 if (status >= 0) {
1187 val =
1188 (state->
1189 reg[MT2063_REG_PD1_TGT] & ~0x40) | (RFAGCEN[Mode]
1190 ? 0x40 :
1191 0x00);
1192 if (state->reg[MT2063_REG_PD1_TGT] != val)
1193 status |= mt2063_setreg(state, MT2063_REG_PD1_TGT, val);
1194 }
1195
1196 /* LNARin */
1197 if (status >= 0) {
1198 u8 val = (state->reg[MT2063_REG_CTRL_2C] & ~0x03) |
1199 (LNARIN[Mode] & 0x03);
1200 if (state->reg[MT2063_REG_CTRL_2C] != val)
1201 status |= mt2063_setreg(state, MT2063_REG_CTRL_2C, val);
1202 }
1203
1204 /* FIFFQEN and FIFFQ */
1205 if (status >= 0) {
1206 val =
1207 (state->
1208 reg[MT2063_REG_FIFF_CTRL2] & ~0xF0) |
1209 (FIFFQEN[Mode] << 7) | (FIFFQ[Mode] << 4);
1210 if (state->reg[MT2063_REG_FIFF_CTRL2] != val) {
1211 status |=
1212 mt2063_setreg(state, MT2063_REG_FIFF_CTRL2, val);
1213 /* trigger FIFF calibration, needed after changing FIFFQ */
1214 val =
1215 (state->reg[MT2063_REG_FIFF_CTRL] | 0x01);
1216 status |=
1217 mt2063_setreg(state, MT2063_REG_FIFF_CTRL, val);
1218 val =
1219 (state->
1220 reg[MT2063_REG_FIFF_CTRL] & ~0x01);
1221 status |=
1222 mt2063_setreg(state, MT2063_REG_FIFF_CTRL, val);
1223 }
1224 }
1225
1226 /* DNC1GC & DNC2GC */
1227 status |= mt2063_get_dnc_output_enable(state, &longval);
1228 status |= mt2063_set_dnc_output_enable(state, longval);
1229
1230 /* acLNAmax */
1231 if (status >= 0) {
1232 u8 val = (state->reg[MT2063_REG_LNA_OV] & ~0x1F) |
1233 (ACLNAMAX[Mode] & 0x1F);
1234 if (state->reg[MT2063_REG_LNA_OV] != val)
1235 status |= mt2063_setreg(state, MT2063_REG_LNA_OV, val);
1236 }
1237
1238 /* LNATGT */
1239 if (status >= 0) {
1240 u8 val = (state->reg[MT2063_REG_LNA_TGT] & ~0x3F) |
1241 (LNATGT[Mode] & 0x3F);
1242 if (state->reg[MT2063_REG_LNA_TGT] != val)
1243 status |= mt2063_setreg(state, MT2063_REG_LNA_TGT, val);
1244 }
1245
1246 /* ACRF */
1247 if (status >= 0) {
1248 u8 val = (state->reg[MT2063_REG_RF_OV] & ~0x1F) |
1249 (ACRFMAX[Mode] & 0x1F);
1250 if (state->reg[MT2063_REG_RF_OV] != val)
1251 status |= mt2063_setreg(state, MT2063_REG_RF_OV, val);
1252 }
1253
1254 /* PD1TGT */
1255 if (status >= 0) {
1256 u8 val = (state->reg[MT2063_REG_PD1_TGT] & ~0x3F) |
1257 (PD1TGT[Mode] & 0x3F);
1258 if (state->reg[MT2063_REG_PD1_TGT] != val)
1259 status |= mt2063_setreg(state, MT2063_REG_PD1_TGT, val);
1260 }
1261
1262 /* FIFATN */
1263 if (status >= 0) {
1264 u8 val = ACFIFMAX[Mode];
1265 if (state->reg[MT2063_REG_PART_REV] != MT2063_B3 && val > 5)
1266 val = 5;
1267 val = (state->reg[MT2063_REG_FIF_OV] & ~0x1F) |
1268 (val & 0x1F);
1269 if (state->reg[MT2063_REG_FIF_OV] != val)
1270 status |= mt2063_setreg(state, MT2063_REG_FIF_OV, val);
1271 }
1272
1273 /* PD2TGT */
1274 if (status >= 0) {
1275 u8 val = (state->reg[MT2063_REG_PD2_TGT] & ~0x3F) |
1276 (PD2TGT[Mode] & 0x3F);
1277 if (state->reg[MT2063_REG_PD2_TGT] != val)
1278 status |= mt2063_setreg(state, MT2063_REG_PD2_TGT, val);
1279 }
1280
1281 /* Ignore ATN Overload */
1282 if (status >= 0) {
1283 val = (state->reg[MT2063_REG_LNA_TGT] & ~0x80) |
1284 (RFOVDIS[Mode] ? 0x80 : 0x00);
1285 if (state->reg[MT2063_REG_LNA_TGT] != val)
1286 status |= mt2063_setreg(state, MT2063_REG_LNA_TGT, val);
1287 }
1288
1289 /* Ignore FIF Overload */
1290 if (status >= 0) {
1291 val = (state->reg[MT2063_REG_PD1_TGT] & ~0x80) |
1292 (FIFOVDIS[Mode] ? 0x80 : 0x00);
1293 if (state->reg[MT2063_REG_PD1_TGT] != val)
1294 status |= mt2063_setreg(state, MT2063_REG_PD1_TGT, val);
1295 }
1296
1297 if (status >= 0) {
1298 state->rcvr_mode = Mode;
1299 dprintk(1, "mt2063 mode changed to %s\n",
1300 mt2063_mode_name[state->rcvr_mode]);
1301 }
1302
1303 return status;
1304 }
1305
1306 /*
1307 * MT2063_ClearPowerMaskBits () - Clears the power-down mask bits for various
1308 * sections of the MT2063
1309 *
1310 * @Bits: Mask bits to be cleared.
1311 *
1312 * See definition of MT2063_Mask_Bits type for description
1313 * of each of the power bits.
1314 */
1315 static u32 MT2063_ClearPowerMaskBits(struct mt2063_state *state,
1316 enum MT2063_Mask_Bits Bits)
1317 {
1318 int status = 0;
1319
1320 dprintk(2, "\n");
1321 Bits = (enum MT2063_Mask_Bits)(Bits & MT2063_ALL_SD); /* Only valid bits for this tuner */
1322 if ((Bits & 0xFF00) != 0) {
1323 state->reg[MT2063_REG_PWR_2] &= ~(u8) (Bits >> 8);
1324 status |=
1325 mt2063_write(state,
1326 MT2063_REG_PWR_2,
1327 &state->reg[MT2063_REG_PWR_2], 1);
1328 }
1329 if ((Bits & 0xFF) != 0) {
1330 state->reg[MT2063_REG_PWR_1] &= ~(u8) (Bits & 0xFF);
1331 status |=
1332 mt2063_write(state,
1333 MT2063_REG_PWR_1,
1334 &state->reg[MT2063_REG_PWR_1], 1);
1335 }
1336
1337 return status;
1338 }
1339
1340 /*
1341 * MT2063_SoftwareShutdown() - Enables or disables software shutdown function.
1342 * When Shutdown is 1, any section whose power
1343 * mask is set will be shutdown.
1344 */
1345 static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown)
1346 {
1347 int status;
1348
1349 dprintk(2, "\n");
1350 if (Shutdown == 1)
1351 state->reg[MT2063_REG_PWR_1] |= 0x04;
1352 else
1353 state->reg[MT2063_REG_PWR_1] &= ~0x04;
1354
1355 status = mt2063_write(state,
1356 MT2063_REG_PWR_1,
1357 &state->reg[MT2063_REG_PWR_1], 1);
1358
1359 if (Shutdown != 1) {
1360 state->reg[MT2063_REG_BYP_CTRL] =
1361 (state->reg[MT2063_REG_BYP_CTRL] & 0x9F) | 0x40;
1362 status |=
1363 mt2063_write(state,
1364 MT2063_REG_BYP_CTRL,
1365 &state->reg[MT2063_REG_BYP_CTRL],
1366 1);
1367 state->reg[MT2063_REG_BYP_CTRL] =
1368 (state->reg[MT2063_REG_BYP_CTRL] & 0x9F);
1369 status |=
1370 mt2063_write(state,
1371 MT2063_REG_BYP_CTRL,
1372 &state->reg[MT2063_REG_BYP_CTRL],
1373 1);
1374 }
1375
1376 return status;
1377 }
1378
1379 static u32 MT2063_Round_fLO(u32 f_LO, u32 f_LO_Step, u32 f_ref)
1380 {
1381 return f_ref * (f_LO / f_ref)
1382 + f_LO_Step * (((f_LO % f_ref) + (f_LO_Step / 2)) / f_LO_Step);
1383 }
1384
1385 /**
1386 * fLO_FractionalTerm() - Calculates the portion contributed by FracN / denom.
1387 * This function preserves maximum precision without
1388 * risk of overflow. It accurately calculates
1389 * f_ref * num / denom to within 1 HZ with fixed math.
1390 *
1391 * @f_ref: SRO frequency.
1392 * @num: Fractional portion of the multiplier
1393 * @denom: denominator portion of the ratio
1394 *
1395 * This calculation handles f_ref as two separate 14-bit fields.
1396 * Therefore, a maximum value of 2^28-1 may safely be used for f_ref.
1397 * This is the genesis of the magic number "14" and the magic mask value of
1398 * 0x03FFF.
1399 *
1400 * This routine successfully handles denom values up to and including 2^18.
1401 * Returns: f_ref * num / denom
1402 */
1403 static u32 MT2063_fLO_FractionalTerm(u32 f_ref, u32 num, u32 denom)
1404 {
1405 u32 t1 = (f_ref >> 14) * num;
1406 u32 term1 = t1 / denom;
1407 u32 loss = t1 % denom;
1408 u32 term2 =
1409 (((f_ref & 0x00003FFF) * num + (loss << 14)) + (denom / 2)) / denom;
1410 return (term1 << 14) + term2;
1411 }
1412
1413 /*
1414 * CalcLO1Mult()- Calculates Integer divider value and the numerator
1415 * value for a FracN PLL.
1416 *
1417 * This function assumes that the f_LO and f_Ref are
1418 * evenly divisible by f_LO_Step.
1419 *
1420 * @Div: OUTPUT: Whole number portion of the multiplier
1421 * @FracN: OUTPUT: Fractional portion of the multiplier
1422 * @f_LO: desired LO frequency.
1423 * @f_LO_Step: Minimum step size for the LO (in Hz).
1424 * @f_Ref: SRO frequency.
1425 * @f_Avoid: Range of PLL frequencies to avoid near integer multiples
1426 * of f_Ref (in Hz).
1427 *
1428 * Returns: Recalculated LO frequency.
1429 */
1430 static u32 MT2063_CalcLO1Mult(u32 *Div,
1431 u32 *FracN,
1432 u32 f_LO,
1433 u32 f_LO_Step, u32 f_Ref)
1434 {
1435 /* Calculate the whole number portion of the divider */
1436 *Div = f_LO / f_Ref;
1437
1438 /* Calculate the numerator value (round to nearest f_LO_Step) */
1439 *FracN =
1440 (64 * (((f_LO % f_Ref) + (f_LO_Step / 2)) / f_LO_Step) +
1441 (f_Ref / f_LO_Step / 2)) / (f_Ref / f_LO_Step);
1442
1443 return (f_Ref * (*Div)) + MT2063_fLO_FractionalTerm(f_Ref, *FracN, 64);
1444 }
1445
1446 /**
1447 * CalcLO2Mult() - Calculates Integer divider value and the numerator
1448 * value for a FracN PLL.
1449 *
1450 * This function assumes that the f_LO and f_Ref are
1451 * evenly divisible by f_LO_Step.
1452 *
1453 * @Div: OUTPUT: Whole number portion of the multiplier
1454 * @FracN: OUTPUT: Fractional portion of the multiplier
1455 * @f_LO: desired LO frequency.
1456 * @f_LO_Step: Minimum step size for the LO (in Hz).
1457 * @f_Ref: SRO frequency.
1458 *
1459 * Returns: Recalculated LO frequency.
1460 */
1461 static u32 MT2063_CalcLO2Mult(u32 *Div,
1462 u32 *FracN,
1463 u32 f_LO,
1464 u32 f_LO_Step, u32 f_Ref)
1465 {
1466 /* Calculate the whole number portion of the divider */
1467 *Div = f_LO / f_Ref;
1468
1469 /* Calculate the numerator value (round to nearest f_LO_Step) */
1470 *FracN =
1471 (8191 * (((f_LO % f_Ref) + (f_LO_Step / 2)) / f_LO_Step) +
1472 (f_Ref / f_LO_Step / 2)) / (f_Ref / f_LO_Step);
1473
1474 return (f_Ref * (*Div)) + MT2063_fLO_FractionalTerm(f_Ref, *FracN,
1475 8191);
1476 }
1477
1478 /*
1479 * FindClearTuneFilter() - Calculate the corrrect ClearTune filter to be
1480 * used for a given input frequency.
1481 *
1482 * @state: ptr to tuner data structure
1483 * @f_in: RF input center frequency (in Hz).
1484 *
1485 * Returns: ClearTune filter number (0-31)
1486 */
1487 static u32 FindClearTuneFilter(struct mt2063_state *state, u32 f_in)
1488 {
1489 u32 RFBand;
1490 u32 idx; /* index loop */
1491
1492 /*
1493 ** Find RF Band setting
1494 */
1495 RFBand = 31; /* def when f_in > all */
1496 for (idx = 0; idx < 31; ++idx) {
1497 if (state->CTFiltMax[idx] >= f_in) {
1498 RFBand = idx;
1499 break;
1500 }
1501 }
1502 return RFBand;
1503 }
1504
1505 /*
1506 * MT2063_Tune() - Change the tuner's tuned frequency to RFin.
1507 */
1508 static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in)
1509 { /* RF input center frequency */
1510
1511 int status = 0;
1512 u32 LO1; /* 1st LO register value */
1513 u32 Num1; /* Numerator for LO1 reg. value */
1514 u32 f_IF1; /* 1st IF requested */
1515 u32 LO2; /* 2nd LO register value */
1516 u32 Num2; /* Numerator for LO2 reg. value */
1517 u32 ofLO1, ofLO2; /* last time's LO frequencies */
1518 u8 fiffc = 0x80; /* FIFF center freq from tuner */
1519 u32 fiffof; /* Offset from FIFF center freq */
1520 const u8 LO1LK = 0x80; /* Mask for LO1 Lock bit */
1521 u8 LO2LK = 0x08; /* Mask for LO2 Lock bit */
1522 u8 val;
1523 u32 RFBand;
1524
1525 dprintk(2, "\n");
1526 /* Check the input and output frequency ranges */
1527 if ((f_in < MT2063_MIN_FIN_FREQ) || (f_in > MT2063_MAX_FIN_FREQ))
1528 return -EINVAL;
1529
1530 if ((state->AS_Data.f_out < MT2063_MIN_FOUT_FREQ)
1531 || (state->AS_Data.f_out > MT2063_MAX_FOUT_FREQ))
1532 return -EINVAL;
1533
1534 /*
1535 * Save original LO1 and LO2 register values
1536 */
1537 ofLO1 = state->AS_Data.f_LO1;
1538 ofLO2 = state->AS_Data.f_LO2;
1539
1540 /*
1541 * Find and set RF Band setting
1542 */
1543 if (state->ctfilt_sw == 1) {
1544 val = (state->reg[MT2063_REG_CTUNE_CTRL] | 0x08);
1545 if (state->reg[MT2063_REG_CTUNE_CTRL] != val) {
1546 status |=
1547 mt2063_setreg(state, MT2063_REG_CTUNE_CTRL, val);
1548 }
1549 val = state->reg[MT2063_REG_CTUNE_OV];
1550 RFBand = FindClearTuneFilter(state, f_in);
1551 state->reg[MT2063_REG_CTUNE_OV] =
1552 (u8) ((state->reg[MT2063_REG_CTUNE_OV] & ~0x1F)
1553 | RFBand);
1554 if (state->reg[MT2063_REG_CTUNE_OV] != val) {
1555 status |=
1556 mt2063_setreg(state, MT2063_REG_CTUNE_OV, val);
1557 }
1558 }
1559
1560 /*
1561 * Read the FIFF Center Frequency from the tuner
1562 */
1563 if (status >= 0) {
1564 status |=
1565 mt2063_read(state,
1566 MT2063_REG_FIFFC,
1567 &state->reg[MT2063_REG_FIFFC], 1);
1568 fiffc = state->reg[MT2063_REG_FIFFC];
1569 }
1570 /*
1571 * Assign in the requested values
1572 */
1573 state->AS_Data.f_in = f_in;
1574 /* Request a 1st IF such that LO1 is on a step size */
1575 state->AS_Data.f_if1_Request =
1576 MT2063_Round_fLO(state->AS_Data.f_if1_Request + f_in,
1577 state->AS_Data.f_LO1_Step,
1578 state->AS_Data.f_ref) - f_in;
1579
1580 /*
1581 * Calculate frequency settings. f_IF1_FREQ + f_in is the
1582 * desired LO1 frequency
1583 */
1584 MT2063_ResetExclZones(&state->AS_Data);
1585
1586 f_IF1 = MT2063_ChooseFirstIF(&state->AS_Data);
1587
1588 state->AS_Data.f_LO1 =
1589 MT2063_Round_fLO(f_IF1 + f_in, state->AS_Data.f_LO1_Step,
1590 state->AS_Data.f_ref);
1591
1592 state->AS_Data.f_LO2 =
1593 MT2063_Round_fLO(state->AS_Data.f_LO1 - state->AS_Data.f_out - f_in,
1594 state->AS_Data.f_LO2_Step, state->AS_Data.f_ref);
1595
1596 /*
1597 * Check for any LO spurs in the output bandwidth and adjust
1598 * the LO settings to avoid them if needed
1599 */
1600 status |= MT2063_AvoidSpurs(&state->AS_Data);
1601 /*
1602 * MT_AvoidSpurs spurs may have changed the LO1 & LO2 values.
1603 * Recalculate the LO frequencies and the values to be placed
1604 * in the tuning registers.
1605 */
1606 state->AS_Data.f_LO1 =
1607 MT2063_CalcLO1Mult(&LO1, &Num1, state->AS_Data.f_LO1,
1608 state->AS_Data.f_LO1_Step, state->AS_Data.f_ref);
1609 state->AS_Data.f_LO2 =
1610 MT2063_Round_fLO(state->AS_Data.f_LO1 - state->AS_Data.f_out - f_in,
1611 state->AS_Data.f_LO2_Step, state->AS_Data.f_ref);
1612 state->AS_Data.f_LO2 =
1613 MT2063_CalcLO2Mult(&LO2, &Num2, state->AS_Data.f_LO2,
1614 state->AS_Data.f_LO2_Step, state->AS_Data.f_ref);
1615
1616 /*
1617 * Check the upconverter and downconverter frequency ranges
1618 */
1619 if ((state->AS_Data.f_LO1 < MT2063_MIN_UPC_FREQ)
1620 || (state->AS_Data.f_LO1 > MT2063_MAX_UPC_FREQ))
1621 status |= MT2063_UPC_RANGE;
1622 if ((state->AS_Data.f_LO2 < MT2063_MIN_DNC_FREQ)
1623 || (state->AS_Data.f_LO2 > MT2063_MAX_DNC_FREQ))
1624 status |= MT2063_DNC_RANGE;
1625 /* LO2 Lock bit was in a different place for B0 version */
1626 if (state->tuner_id == MT2063_B0)
1627 LO2LK = 0x40;
1628
1629 /*
1630 * If we have the same LO frequencies and we're already locked,
1631 * then skip re-programming the LO registers.
1632 */
1633 if ((ofLO1 != state->AS_Data.f_LO1)
1634 || (ofLO2 != state->AS_Data.f_LO2)
1635 || ((state->reg[MT2063_REG_LO_STATUS] & (LO1LK | LO2LK)) !=
1636 (LO1LK | LO2LK))) {
1637 /*
1638 * Calculate the FIFFOF register value
1639 *
1640 * IF1_Actual
1641 * FIFFOF = ------------ - 8 * FIFFC - 4992
1642 * f_ref/64
1643 */
1644 fiffof =
1645 (state->AS_Data.f_LO1 -
1646 f_in) / (state->AS_Data.f_ref / 64) - 8 * (u32) fiffc -
1647 4992;
1648 if (fiffof > 0xFF)
1649 fiffof = 0xFF;
1650
1651 /*
1652 * Place all of the calculated values into the local tuner
1653 * register fields.
1654 */
1655 if (status >= 0) {
1656 state->reg[MT2063_REG_LO1CQ_1] = (u8) (LO1 & 0xFF); /* DIV1q */
1657 state->reg[MT2063_REG_LO1CQ_2] = (u8) (Num1 & 0x3F); /* NUM1q */
1658 state->reg[MT2063_REG_LO2CQ_1] = (u8) (((LO2 & 0x7F) << 1) /* DIV2q */
1659 |(Num2 >> 12)); /* NUM2q (hi) */
1660 state->reg[MT2063_REG_LO2CQ_2] = (u8) ((Num2 & 0x0FF0) >> 4); /* NUM2q (mid) */
1661 state->reg[MT2063_REG_LO2CQ_3] = (u8) (0xE0 | (Num2 & 0x000F)); /* NUM2q (lo) */
1662
1663 /*
1664 * Now write out the computed register values
1665 * IMPORTANT: There is a required order for writing
1666 * (0x05 must follow all the others).
1667 */
1668 status |= mt2063_write(state, MT2063_REG_LO1CQ_1, &state->reg[MT2063_REG_LO1CQ_1], 5); /* 0x01 - 0x05 */
1669 if (state->tuner_id == MT2063_B0) {
1670 /* Re-write the one-shot bits to trigger the tune operation */
1671 status |= mt2063_write(state, MT2063_REG_LO2CQ_3, &state->reg[MT2063_REG_LO2CQ_3], 1); /* 0x05 */
1672 }
1673 /* Write out the FIFF offset only if it's changing */
1674 if (state->reg[MT2063_REG_FIFF_OFFSET] !=
1675 (u8) fiffof) {
1676 state->reg[MT2063_REG_FIFF_OFFSET] =
1677 (u8) fiffof;
1678 status |=
1679 mt2063_write(state,
1680 MT2063_REG_FIFF_OFFSET,
1681 &state->
1682 reg[MT2063_REG_FIFF_OFFSET],
1683 1);
1684 }
1685 }
1686
1687 /*
1688 * Check for LO's locking
1689 */
1690
1691 if (status < 0)
1692 return status;
1693
1694 status = mt2063_lockStatus(state);
1695 if (status < 0)
1696 return status;
1697 if (!status)
1698 return -EINVAL; /* Couldn't lock */
1699
1700 /*
1701 * If we locked OK, assign calculated data to mt2063_state structure
1702 */
1703 state->f_IF1_actual = state->AS_Data.f_LO1 - f_in;
1704 }
1705
1706 return status;
1707 }
1708
1709 static const u8 MT2063B0_defaults[] = {
1710 /* Reg, Value */
1711 0x19, 0x05,
1712 0x1B, 0x1D,
1713 0x1C, 0x1F,
1714 0x1D, 0x0F,
1715 0x1E, 0x3F,
1716 0x1F, 0x0F,
1717 0x20, 0x3F,
1718 0x22, 0x21,
1719 0x23, 0x3F,
1720 0x24, 0x20,
1721 0x25, 0x3F,
1722 0x27, 0xEE,
1723 0x2C, 0x27, /* bit at 0x20 is cleared below */
1724 0x30, 0x03,
1725 0x2C, 0x07, /* bit at 0x20 is cleared here */
1726 0x2D, 0x87,
1727 0x2E, 0xAA,
1728 0x28, 0xE1, /* Set the FIFCrst bit here */
1729 0x28, 0xE0, /* Clear the FIFCrst bit here */
1730 0x00
1731 };
1732
1733 /* writing 0x05 0xf0 sw-resets all registers, so we write only needed changes */
1734 static const u8 MT2063B1_defaults[] = {
1735 /* Reg, Value */
1736 0x05, 0xF0,
1737 0x11, 0x10, /* New Enable AFCsd */
1738 0x19, 0x05,
1739 0x1A, 0x6C,
1740 0x1B, 0x24,
1741 0x1C, 0x28,
1742 0x1D, 0x8F,
1743 0x1E, 0x14,
1744 0x1F, 0x8F,
1745 0x20, 0x57,
1746 0x22, 0x21, /* New - ver 1.03 */
1747 0x23, 0x3C, /* New - ver 1.10 */
1748 0x24, 0x20, /* New - ver 1.03 */
1749 0x2C, 0x24, /* bit at 0x20 is cleared below */
1750 0x2D, 0x87, /* FIFFQ=0 */
1751 0x2F, 0xF3,
1752 0x30, 0x0C, /* New - ver 1.11 */
1753 0x31, 0x1B, /* New - ver 1.11 */
1754 0x2C, 0x04, /* bit at 0x20 is cleared here */
1755 0x28, 0xE1, /* Set the FIFCrst bit here */
1756 0x28, 0xE0, /* Clear the FIFCrst bit here */
1757 0x00
1758 };
1759
1760 /* writing 0x05 0xf0 sw-resets all registers, so we write only needed changes */
1761 static const u8 MT2063B3_defaults[] = {
1762 /* Reg, Value */
1763 0x05, 0xF0,
1764 0x19, 0x3D,
1765 0x2C, 0x24, /* bit at 0x20 is cleared below */
1766 0x2C, 0x04, /* bit at 0x20 is cleared here */
1767 0x28, 0xE1, /* Set the FIFCrst bit here */
1768 0x28, 0xE0, /* Clear the FIFCrst bit here */
1769 0x00
1770 };
1771
1772 static int mt2063_init(struct dvb_frontend *fe)
1773 {
1774 int status;
1775 struct mt2063_state *state = fe->tuner_priv;
1776 u8 all_resets = 0xF0; /* reset/load bits */
1777 const u8 *def = NULL;
1778 char *step;
1779 u32 FCRUN;
1780 s32 maxReads;
1781 u32 fcu_osc;
1782 u32 i;
1783
1784 dprintk(2, "\n");
1785
1786 state->rcvr_mode = MT2063_CABLE_QAM;
1787
1788 /* Read the Part/Rev code from the tuner */
1789 status = mt2063_read(state, MT2063_REG_PART_REV,
1790 &state->reg[MT2063_REG_PART_REV], 1);
1791 if (status < 0) {
1792 printk(KERN_ERR "Can't read mt2063 part ID\n");
1793 return status;
1794 }
1795
1796 /* Check the part/rev code */
1797 switch (state->reg[MT2063_REG_PART_REV]) {
1798 case MT2063_B0:
1799 step = "B0";
1800 break;
1801 case MT2063_B1:
1802 step = "B1";
1803 break;
1804 case MT2063_B2:
1805 step = "B2";
1806 break;
1807 case MT2063_B3:
1808 step = "B3";
1809 break;
1810 default:
1811 printk(KERN_ERR "mt2063: Unknown mt2063 device ID (0x%02x)\n",
1812 state->reg[MT2063_REG_PART_REV]);
1813 return -ENODEV; /* Wrong tuner Part/Rev code */
1814 }
1815
1816 /* Check the 2nd byte of the Part/Rev code from the tuner */
1817 status = mt2063_read(state, MT2063_REG_RSVD_3B,
1818 &state->reg[MT2063_REG_RSVD_3B], 1);
1819
1820 /* b7 != 0 ==> NOT MT2063 */
1821 if (status < 0 || ((state->reg[MT2063_REG_RSVD_3B] & 0x80) != 0x00)) {
1822 printk(KERN_ERR "mt2063: Unknown part ID (0x%02x%02x)\n",
1823 state->reg[MT2063_REG_PART_REV],
1824 state->reg[MT2063_REG_RSVD_3B]);
1825 return -ENODEV; /* Wrong tuner Part/Rev code */
1826 }
1827
1828 printk(KERN_INFO "mt2063: detected a mt2063 %s\n", step);
1829
1830 /* Reset the tuner */
1831 status = mt2063_write(state, MT2063_REG_LO2CQ_3, &all_resets, 1);
1832 if (status < 0)
1833 return status;
1834
1835 /* change all of the default values that vary from the HW reset values */
1836 /* def = (state->reg[PART_REV] == MT2063_B0) ? MT2063B0_defaults : MT2063B1_defaults; */
1837 switch (state->reg[MT2063_REG_PART_REV]) {
1838 case MT2063_B3:
1839 def = MT2063B3_defaults;
1840 break;
1841
1842 case MT2063_B1:
1843 def = MT2063B1_defaults;
1844 break;
1845
1846 case MT2063_B0:
1847 def = MT2063B0_defaults;
1848 break;
1849
1850 default:
1851 return -ENODEV;
1852 break;
1853 }
1854
1855 while (status >= 0 && *def) {
1856 u8 reg = *def++;
1857 u8 val = *def++;
1858 status = mt2063_write(state, reg, &val, 1);
1859 }
1860 if (status < 0)
1861 return status;
1862
1863 /* Wait for FIFF location to complete. */
1864 FCRUN = 1;
1865 maxReads = 10;
1866 while (status >= 0 && (FCRUN != 0) && (maxReads-- > 0)) {
1867 msleep(2);
1868 status = mt2063_read(state,
1869 MT2063_REG_XO_STATUS,
1870 &state->
1871 reg[MT2063_REG_XO_STATUS], 1);
1872 FCRUN = (state->reg[MT2063_REG_XO_STATUS] & 0x40) >> 6;
1873 }
1874
1875 if (FCRUN != 0 || status < 0)
1876 return -ENODEV;
1877
1878 status = mt2063_read(state,
1879 MT2063_REG_FIFFC,
1880 &state->reg[MT2063_REG_FIFFC], 1);
1881 if (status < 0)
1882 return status;
1883
1884 /* Read back all the registers from the tuner */
1885 status = mt2063_read(state,
1886 MT2063_REG_PART_REV,
1887 state->reg, MT2063_REG_END_REGS);
1888 if (status < 0)
1889 return status;
1890
1891 /* Initialize the tuner state. */
1892 state->tuner_id = state->reg[MT2063_REG_PART_REV];
1893 state->AS_Data.f_ref = MT2063_REF_FREQ;
1894 state->AS_Data.f_if1_Center = (state->AS_Data.f_ref / 8) *
1895 ((u32) state->reg[MT2063_REG_FIFFC] + 640);
1896 state->AS_Data.f_if1_bw = MT2063_IF1_BW;
1897 state->AS_Data.f_out = 43750000UL;
1898 state->AS_Data.f_out_bw = 6750000UL;
1899 state->AS_Data.f_zif_bw = MT2063_ZIF_BW;
1900 state->AS_Data.f_LO1_Step = state->AS_Data.f_ref / 64;
1901 state->AS_Data.f_LO2_Step = MT2063_TUNE_STEP_SIZE;
1902 state->AS_Data.maxH1 = MT2063_MAX_HARMONICS_1;
1903 state->AS_Data.maxH2 = MT2063_MAX_HARMONICS_2;
1904 state->AS_Data.f_min_LO_Separation = MT2063_MIN_LO_SEP;
1905 state->AS_Data.f_if1_Request = state->AS_Data.f_if1_Center;
1906 state->AS_Data.f_LO1 = 2181000000UL;
1907 state->AS_Data.f_LO2 = 1486249786UL;
1908 state->f_IF1_actual = state->AS_Data.f_if1_Center;
1909 state->AS_Data.f_in = state->AS_Data.f_LO1 - state->f_IF1_actual;
1910 state->AS_Data.f_LO1_FracN_Avoid = MT2063_LO1_FRACN_AVOID;
1911 state->AS_Data.f_LO2_FracN_Avoid = MT2063_LO2_FRACN_AVOID;
1912 state->num_regs = MT2063_REG_END_REGS;
1913 state->AS_Data.avoidDECT = MT2063_AVOID_BOTH;
1914 state->ctfilt_sw = 0;
1915
1916 state->CTFiltMax[0] = 69230000;
1917 state->CTFiltMax[1] = 105770000;
1918 state->CTFiltMax[2] = 140350000;
1919 state->CTFiltMax[3] = 177110000;
1920 state->CTFiltMax[4] = 212860000;
1921 state->CTFiltMax[5] = 241130000;
1922 state->CTFiltMax[6] = 274370000;
1923 state->CTFiltMax[7] = 309820000;
1924 state->CTFiltMax[8] = 342450000;
1925 state->CTFiltMax[9] = 378870000;
1926 state->CTFiltMax[10] = 416210000;
1927 state->CTFiltMax[11] = 456500000;
1928 state->CTFiltMax[12] = 495790000;
1929 state->CTFiltMax[13] = 534530000;
1930 state->CTFiltMax[14] = 572610000;
1931 state->CTFiltMax[15] = 598970000;
1932 state->CTFiltMax[16] = 635910000;
1933 state->CTFiltMax[17] = 672130000;
1934 state->CTFiltMax[18] = 714840000;
1935 state->CTFiltMax[19] = 739660000;
1936 state->CTFiltMax[20] = 770410000;
1937 state->CTFiltMax[21] = 814660000;
1938 state->CTFiltMax[22] = 846950000;
1939 state->CTFiltMax[23] = 867820000;
1940 state->CTFiltMax[24] = 915980000;
1941 state->CTFiltMax[25] = 947450000;
1942 state->CTFiltMax[26] = 983110000;
1943 state->CTFiltMax[27] = 1021630000;
1944 state->CTFiltMax[28] = 1061870000;
1945 state->CTFiltMax[29] = 1098330000;
1946 state->CTFiltMax[30] = 1138990000;
1947
1948 /*
1949 ** Fetch the FCU osc value and use it and the fRef value to
1950 ** scale all of the Band Max values
1951 */
1952
1953 state->reg[MT2063_REG_CTUNE_CTRL] = 0x0A;
1954 status = mt2063_write(state, MT2063_REG_CTUNE_CTRL,
1955 &state->reg[MT2063_REG_CTUNE_CTRL], 1);
1956 if (status < 0)
1957 return status;
1958
1959 /* Read the ClearTune filter calibration value */
1960 status = mt2063_read(state, MT2063_REG_FIFFC,
1961 &state->reg[MT2063_REG_FIFFC], 1);
1962 if (status < 0)
1963 return status;
1964
1965 fcu_osc = state->reg[MT2063_REG_FIFFC];
1966
1967 state->reg[MT2063_REG_CTUNE_CTRL] = 0x00;
1968 status = mt2063_write(state, MT2063_REG_CTUNE_CTRL,
1969 &state->reg[MT2063_REG_CTUNE_CTRL], 1);
1970 if (status < 0)
1971 return status;
1972
1973 /* Adjust each of the values in the ClearTune filter cross-over table */
1974 for (i = 0; i < 31; i++)
1975 state->CTFiltMax[i] = (state->CTFiltMax[i] / 768) * (fcu_osc + 640);
1976
1977 status = MT2063_SoftwareShutdown(state, 1);
1978 if (status < 0)
1979 return status;
1980 status = MT2063_ClearPowerMaskBits(state, MT2063_ALL_SD);
1981 if (status < 0)
1982 return status;
1983
1984 state->init = true;
1985
1986 return 0;
1987 }
1988
1989 static int mt2063_get_status(struct dvb_frontend *fe, u32 *tuner_status)
1990 {
1991 struct mt2063_state *state = fe->tuner_priv;
1992 int status;
1993
1994 dprintk(2, "\n");
1995
1996 if (!state->init)
1997 return -ENODEV;
1998
1999 *tuner_status = 0;
2000 status = mt2063_lockStatus(state);
2001 if (status < 0)
2002 return status;
2003 if (status)
2004 *tuner_status = TUNER_STATUS_LOCKED;
2005
2006 dprintk(1, "Tuner status: %d", *tuner_status);
2007
2008 return 0;
2009 }
2010
2011 static void mt2063_release(struct dvb_frontend *fe)
2012 {
2013 struct mt2063_state *state = fe->tuner_priv;
2014
2015 dprintk(2, "\n");
2016
2017 fe->tuner_priv = NULL;
2018 kfree(state);
2019 }
2020
2021 static int mt2063_set_analog_params(struct dvb_frontend *fe,
2022 struct analog_parameters *params)
2023 {
2024 struct mt2063_state *state = fe->tuner_priv;
2025 s32 pict_car;
2026 s32 pict2chanb_vsb;
2027 s32 ch_bw;
2028 s32 if_mid;
2029 s32 rcvr_mode;
2030 int status;
2031
2032 dprintk(2, "\n");
2033
2034 if (!state->init) {
2035 status = mt2063_init(fe);
2036 if (status < 0)
2037 return status;
2038 }
2039
2040 switch (params->mode) {
2041 case V4L2_TUNER_RADIO:
2042 pict_car = 38900000;
2043 ch_bw = 8000000;
2044 pict2chanb_vsb = -(ch_bw / 2);
2045 rcvr_mode = MT2063_OFFAIR_ANALOG;
2046 break;
2047 case V4L2_TUNER_ANALOG_TV:
2048 rcvr_mode = MT2063_CABLE_ANALOG;
2049 if (params->std & ~V4L2_STD_MN) {
2050 pict_car = 38900000;
2051 ch_bw = 6000000;
2052 pict2chanb_vsb = -1250000;
2053 } else if (params->std & V4L2_STD_PAL_G) {
2054 pict_car = 38900000;
2055 ch_bw = 7000000;
2056 pict2chanb_vsb = -1250000;
2057 } else { /* PAL/SECAM standards */
2058 pict_car = 38900000;
2059 ch_bw = 8000000;
2060 pict2chanb_vsb = -1250000;
2061 }
2062 break;
2063 default:
2064 return -EINVAL;
2065 }
2066 if_mid = pict_car - (pict2chanb_vsb + (ch_bw / 2));
2067
2068 state->AS_Data.f_LO2_Step = 125000; /* FIXME: probably 5000 for FM */
2069 state->AS_Data.f_out = if_mid;
2070 state->AS_Data.f_out_bw = ch_bw + 750000;
2071 status = MT2063_SetReceiverMode(state, rcvr_mode);
2072 if (status < 0)
2073 return status;
2074
2075 dprintk(1, "Tuning to frequency: %d, bandwidth %d, foffset %d\n",
2076 params->frequency, ch_bw, pict2chanb_vsb);
2077
2078 status = MT2063_Tune(state, (params->frequency + (pict2chanb_vsb + (ch_bw / 2))));
2079 if (status < 0)
2080 return status;
2081
2082 state->frequency = params->frequency;
2083 return 0;
2084 }
2085
2086 /*
2087 * As defined on EN 300 429, the DVB-C roll-off factor is 0.15.
2088 * So, the amount of the needed bandwidth is given by:
2089 * Bw = Symbol_rate * (1 + 0.15)
2090 * As such, the maximum symbol rate supported by 6 MHz is given by:
2091 * max_symbol_rate = 6 MHz / 1.15 = 5217391 Bauds
2092 */
2093 #define MAX_SYMBOL_RATE_6MHz 5217391
2094
2095 static int mt2063_set_params(struct dvb_frontend *fe)
2096 {
2097 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
2098 struct mt2063_state *state = fe->tuner_priv;
2099 int status;
2100 s32 pict_car;
2101 s32 pict2chanb_vsb;
2102 s32 ch_bw;
2103 s32 if_mid;
2104 s32 rcvr_mode;
2105
2106 if (!state->init) {
2107 status = mt2063_init(fe);
2108 if (status < 0)
2109 return status;
2110 }
2111
2112 dprintk(2, "\n");
2113
2114 if (c->bandwidth_hz == 0)
2115 return -EINVAL;
2116 if (c->bandwidth_hz <= 6000000)
2117 ch_bw = 6000000;
2118 else if (c->bandwidth_hz <= 7000000)
2119 ch_bw = 7000000;
2120 else
2121 ch_bw = 8000000;
2122
2123 switch (c->delivery_system) {
2124 case SYS_DVBT:
2125 rcvr_mode = MT2063_OFFAIR_COFDM;
2126 pict_car = 36125000;
2127 pict2chanb_vsb = -(ch_bw / 2);
2128 break;
2129 case SYS_DVBC_ANNEX_A:
2130 case SYS_DVBC_ANNEX_C:
2131 rcvr_mode = MT2063_CABLE_QAM;
2132 pict_car = 36125000;
2133 pict2chanb_vsb = -(ch_bw / 2);
2134 break;
2135 default:
2136 return -EINVAL;
2137 }
2138 if_mid = pict_car - (pict2chanb_vsb + (ch_bw / 2));
2139
2140 state->AS_Data.f_LO2_Step = 125000; /* FIXME: probably 5000 for FM */
2141 state->AS_Data.f_out = if_mid;
2142 state->AS_Data.f_out_bw = ch_bw + 750000;
2143 status = MT2063_SetReceiverMode(state, rcvr_mode);
2144 if (status < 0)
2145 return status;
2146
2147 dprintk(1, "Tuning to frequency: %d, bandwidth %d, foffset %d\n",
2148 c->frequency, ch_bw, pict2chanb_vsb);
2149
2150 status = MT2063_Tune(state, (c->frequency + (pict2chanb_vsb + (ch_bw / 2))));
2151
2152 if (status < 0)
2153 return status;
2154
2155 state->frequency = c->frequency;
2156 return 0;
2157 }
2158
2159 static int mt2063_get_if_frequency(struct dvb_frontend *fe, u32 *freq)
2160 {
2161 struct mt2063_state *state = fe->tuner_priv;
2162
2163 dprintk(2, "\n");
2164
2165 if (!state->init)
2166 return -ENODEV;
2167
2168 *freq = state->AS_Data.f_out;
2169
2170 dprintk(1, "IF frequency: %d\n", *freq);
2171
2172 return 0;
2173 }
2174
2175 static int mt2063_get_bandwidth(struct dvb_frontend *fe, u32 *bw)
2176 {
2177 struct mt2063_state *state = fe->tuner_priv;
2178
2179 dprintk(2, "\n");
2180
2181 if (!state->init)
2182 return -ENODEV;
2183
2184 *bw = state->AS_Data.f_out_bw - 750000;
2185
2186 dprintk(1, "bandwidth: %d\n", *bw);
2187
2188 return 0;
2189 }
2190
2191 static const struct dvb_tuner_ops mt2063_ops = {
2192 .info = {
2193 .name = "MT2063 Silicon Tuner",
2194 .frequency_min_hz = 45 * MHz,
2195 .frequency_max_hz = 865 * MHz,
2196 },
2197
2198 .init = mt2063_init,
2199 .sleep = MT2063_Sleep,
2200 .get_status = mt2063_get_status,
2201 .set_analog_params = mt2063_set_analog_params,
2202 .set_params = mt2063_set_params,
2203 .get_if_frequency = mt2063_get_if_frequency,
2204 .get_bandwidth = mt2063_get_bandwidth,
2205 .release = mt2063_release,
2206 };
2207
2208 struct dvb_frontend *mt2063_attach(struct dvb_frontend *fe,
2209 struct mt2063_config *config,
2210 struct i2c_adapter *i2c)
2211 {
2212 struct mt2063_state *state = NULL;
2213
2214 dprintk(2, "\n");
2215
2216 state = kzalloc(sizeof(struct mt2063_state), GFP_KERNEL);
2217 if (!state)
2218 return NULL;
2219
2220 state->config = config;
2221 state->i2c = i2c;
2222 state->frontend = fe;
2223 state->reference = config->refclock / 1000; /* kHz */
2224 fe->tuner_priv = state;
2225 fe->ops.tuner_ops = mt2063_ops;
2226
2227 printk(KERN_INFO "%s: Attaching MT2063\n", __func__);
2228 return fe;
2229 }
2230 EXPORT_SYMBOL_GPL(mt2063_attach);
2231
2232 #if 0
2233 /*
2234 * Ancillary routines visible outside mt2063
2235 * FIXME: Remove them in favor of using standard tuner callbacks
2236 */
2237 static int tuner_MT2063_SoftwareShutdown(struct dvb_frontend *fe)
2238 {
2239 struct mt2063_state *state = fe->tuner_priv;
2240 int err = 0;
2241
2242 dprintk(2, "\n");
2243
2244 err = MT2063_SoftwareShutdown(state, 1);
2245 if (err < 0)
2246 printk(KERN_ERR "%s: Couldn't shutdown\n", __func__);
2247
2248 return err;
2249 }
2250
2251 static int tuner_MT2063_ClearPowerMaskBits(struct dvb_frontend *fe)
2252 {
2253 struct mt2063_state *state = fe->tuner_priv;
2254 int err = 0;
2255
2256 dprintk(2, "\n");
2257
2258 err = MT2063_ClearPowerMaskBits(state, MT2063_ALL_SD);
2259 if (err < 0)
2260 printk(KERN_ERR "%s: Invalid parameter\n", __func__);
2261
2262 return err;
2263 }
2264 #endif
2265
2266 MODULE_AUTHOR("Mauro Carvalho Chehab");
2267 MODULE_DESCRIPTION("MT2063 Silicon tuner");
2268 MODULE_LICENSE("GPL");
Linux with added FPC-III support