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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / media / dvb-frontends / mn88443x.c
blobe4528784f8477fe897c51a18fc7f5bcb9b9196e4
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Socionext MN88443x series demodulator driver for ISDB-S/ISDB-T.
4 //
5 // Copyright (c) 2018 Socionext Inc.
6
7 #include <linux/bitfield.h>
8 #include <linux/clk.h>
9 #include <linux/delay.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/of_device.h>
12 #include <linux/regmap.h>
13 #include <media/dvb_math.h>
14
15 #include "mn88443x.h"
16
17 /* ISDB-S registers */
18 #define ATSIDU_S 0x2f
19 #define ATSIDL_S 0x30
20 #define TSSET_S 0x31
21 #define AGCREAD_S 0x5a
22 #define CPMON1_S 0x5e
23 #define CPMON1_S_FSYNC BIT(5)
24 #define CPMON1_S_ERRMON BIT(4)
25 #define CPMON1_S_SIGOFF BIT(3)
26 #define CPMON1_S_W2LOCK BIT(2)
27 #define CPMON1_S_W1LOCK BIT(1)
28 #define CPMON1_S_DW1LOCK BIT(0)
29 #define TRMON_S 0x60
30 #define BERCNFLG_S 0x68
31 #define BERCNFLG_S_BERVRDY BIT(5)
32 #define BERCNFLG_S_BERVCHK BIT(4)
33 #define BERCNFLG_S_BERDRDY BIT(3)
34 #define BERCNFLG_S_BERDCHK BIT(2)
35 #define CNRDXU_S 0x69
36 #define CNRDXL_S 0x6a
37 #define CNRDYU_S 0x6b
38 #define CNRDYL_S 0x6c
39 #define BERVRDU_S 0x71
40 #define BERVRDL_S 0x72
41 #define DOSET1_S 0x73
42
43 /* Primary ISDB-T */
44 #define PLLASET1 0x00
45 #define PLLASET2 0x01
46 #define PLLBSET1 0x02
47 #define PLLBSET2 0x03
48 #define PLLSET 0x04
49 #define OUTCSET 0x08
50 #define OUTCSET_CHDRV_8MA 0xff
51 #define OUTCSET_CHDRV_4MA 0x00
52 #define PLDWSET 0x09
53 #define PLDWSET_NORMAL 0x00
54 #define PLDWSET_PULLDOWN 0xff
55 #define HIZSET1 0x0a
56 #define HIZSET2 0x0b
57
58 /* Secondary ISDB-T (for MN884434 only) */
59 #define RCVSET 0x00
60 #define TSSET1_M 0x01
61 #define TSSET2_M 0x02
62 #define TSSET3_M 0x03
63 #define INTACSET 0x08
64 #define HIZSET3 0x0b
65
66 /* ISDB-T registers */
67 #define TSSET1 0x05
68 #define TSSET1_TSASEL_MASK GENMASK(4, 3)
69 #define TSSET1_TSASEL_ISDBT (0x0 << 3)
70 #define TSSET1_TSASEL_ISDBS (0x1 << 3)
71 #define TSSET1_TSASEL_NONE (0x2 << 3)
72 #define TSSET1_TSBSEL_MASK GENMASK(2, 1)
73 #define TSSET1_TSBSEL_ISDBS (0x0 << 1)
74 #define TSSET1_TSBSEL_ISDBT (0x1 << 1)
75 #define TSSET1_TSBSEL_NONE (0x2 << 1)
76 #define TSSET2 0x06
77 #define TSSET3 0x07
78 #define TSSET3_INTASEL_MASK GENMASK(7, 6)
79 #define TSSET3_INTASEL_T (0x0 << 6)
80 #define TSSET3_INTASEL_S (0x1 << 6)
81 #define TSSET3_INTASEL_NONE (0x2 << 6)
82 #define TSSET3_INTBSEL_MASK GENMASK(5, 4)
83 #define TSSET3_INTBSEL_S (0x0 << 4)
84 #define TSSET3_INTBSEL_T (0x1 << 4)
85 #define TSSET3_INTBSEL_NONE (0x2 << 4)
86 #define OUTSET2 0x0d
87 #define PWDSET 0x0f
88 #define PWDSET_OFDMPD_MASK GENMASK(3, 2)
89 #define PWDSET_OFDMPD_DOWN BIT(3)
90 #define PWDSET_PSKPD_MASK GENMASK(1, 0)
91 #define PWDSET_PSKPD_DOWN BIT(1)
92 #define CLKSET1_T 0x11
93 #define MDSET_T 0x13
94 #define MDSET_T_MDAUTO_MASK GENMASK(7, 4)
95 #define MDSET_T_MDAUTO_AUTO (0xf << 4)
96 #define MDSET_T_MDAUTO_MANUAL (0x0 << 4)
97 #define MDSET_T_FFTS_MASK GENMASK(3, 2)
98 #define MDSET_T_FFTS_MODE1 (0x0 << 2)
99 #define MDSET_T_FFTS_MODE2 (0x1 << 2)
100 #define MDSET_T_FFTS_MODE3 (0x2 << 2)
101 #define MDSET_T_GI_MASK GENMASK(1, 0)
102 #define MDSET_T_GI_1_32 (0x0 << 0)
103 #define MDSET_T_GI_1_16 (0x1 << 0)
104 #define MDSET_T_GI_1_8 (0x2 << 0)
105 #define MDSET_T_GI_1_4 (0x3 << 0)
106 #define MDASET_T 0x14
107 #define ADCSET1_T 0x20
108 #define ADCSET1_T_REFSEL_MASK GENMASK(1, 0)
109 #define ADCSET1_T_REFSEL_2V (0x3 << 0)
110 #define ADCSET1_T_REFSEL_1_5V (0x2 << 0)
111 #define ADCSET1_T_REFSEL_1V (0x1 << 0)
112 #define NCOFREQU_T 0x24
113 #define NCOFREQM_T 0x25
114 #define NCOFREQL_T 0x26
115 #define FADU_T 0x27
116 #define FADM_T 0x28
117 #define FADL_T 0x29
118 #define AGCSET2_T 0x2c
119 #define AGCSET2_T_IFPOLINV_INC BIT(0)
120 #define AGCSET2_T_RFPOLINV_INC BIT(1)
121 #define AGCV3_T 0x3e
122 #define MDRD_T 0xa2
123 #define MDRD_T_SEGID_MASK GENMASK(5, 4)
124 #define MDRD_T_SEGID_13 (0x0 << 4)
125 #define MDRD_T_SEGID_1 (0x1 << 4)
126 #define MDRD_T_SEGID_3 (0x2 << 4)
127 #define MDRD_T_FFTS_MASK GENMASK(3, 2)
128 #define MDRD_T_FFTS_MODE1 (0x0 << 2)
129 #define MDRD_T_FFTS_MODE2 (0x1 << 2)
130 #define MDRD_T_FFTS_MODE3 (0x2 << 2)
131 #define MDRD_T_GI_MASK GENMASK(1, 0)
132 #define MDRD_T_GI_1_32 (0x0 << 0)
133 #define MDRD_T_GI_1_16 (0x1 << 0)
134 #define MDRD_T_GI_1_8 (0x2 << 0)
135 #define MDRD_T_GI_1_4 (0x3 << 0)
136 #define SSEQRD_T 0xa3
137 #define SSEQRD_T_SSEQSTRD_MASK GENMASK(3, 0)
138 #define SSEQRD_T_SSEQSTRD_RESET (0x0 << 0)
139 #define SSEQRD_T_SSEQSTRD_TUNING (0x1 << 0)
140 #define SSEQRD_T_SSEQSTRD_AGC (0x2 << 0)
141 #define SSEQRD_T_SSEQSTRD_SEARCH (0x3 << 0)
142 #define SSEQRD_T_SSEQSTRD_CLOCK_SYNC (0x4 << 0)
143 #define SSEQRD_T_SSEQSTRD_FREQ_SYNC (0x8 << 0)
144 #define SSEQRD_T_SSEQSTRD_FRAME_SYNC (0x9 << 0)
145 #define SSEQRD_T_SSEQSTRD_SYNC (0xa << 0)
146 #define SSEQRD_T_SSEQSTRD_LOCK (0xb << 0)
147 #define AGCRDU_T 0xa8
148 #define AGCRDL_T 0xa9
149 #define CNRDU_T 0xbe
150 #define CNRDL_T 0xbf
151 #define BERFLG_T 0xc0
152 #define BERFLG_T_BERDRDY BIT(7)
153 #define BERFLG_T_BERDCHK BIT(6)
154 #define BERFLG_T_BERVRDYA BIT(5)
155 #define BERFLG_T_BERVCHKA BIT(4)
156 #define BERFLG_T_BERVRDYB BIT(3)
157 #define BERFLG_T_BERVCHKB BIT(2)
158 #define BERFLG_T_BERVRDYC BIT(1)
159 #define BERFLG_T_BERVCHKC BIT(0)
160 #define BERRDU_T 0xc1
161 #define BERRDM_T 0xc2
162 #define BERRDL_T 0xc3
163 #define BERLENRDU_T 0xc4
164 #define BERLENRDL_T 0xc5
165 #define ERRFLG_T 0xc6
166 #define ERRFLG_T_BERDOVF BIT(7)
167 #define ERRFLG_T_BERVOVFA BIT(6)
168 #define ERRFLG_T_BERVOVFB BIT(5)
169 #define ERRFLG_T_BERVOVFC BIT(4)
170 #define ERRFLG_T_NERRFA BIT(3)
171 #define ERRFLG_T_NERRFB BIT(2)
172 #define ERRFLG_T_NERRFC BIT(1)
173 #define ERRFLG_T_NERRF BIT(0)
174 #define DOSET1_T 0xcf
175
176 #define CLK_LOW 4000000
177 #define CLK_DIRECT 20200000
178 #define CLK_MAX 25410000
179
180 #define S_T_FREQ 8126984 /* 512 / 63 MHz */
181
182 struct mn88443x_spec {
183 bool primary;
184 };
185
186 struct mn88443x_priv {
187 const struct mn88443x_spec *spec;
188
189 struct dvb_frontend fe;
190 struct clk *mclk;
191 struct gpio_desc *reset_gpio;
192 u32 clk_freq;
193 u32 if_freq;
194
195 /* Common */
196 bool use_clkbuf;
197
198 /* ISDB-S */
199 struct i2c_client *client_s;
200 struct regmap *regmap_s;
201
202 /* ISDB-T */
203 struct i2c_client *client_t;
204 struct regmap *regmap_t;
205 };
206
207 static void mn88443x_cmn_power_on(struct mn88443x_priv *chip)
208 {
209 struct regmap *r_t = chip->regmap_t;
210
211 clk_prepare_enable(chip->mclk);
212
213 gpiod_set_value_cansleep(chip->reset_gpio, 1);
214 usleep_range(100, 1000);
215 gpiod_set_value_cansleep(chip->reset_gpio, 0);
216
217 if (chip->spec->primary) {
218 regmap_write(r_t, OUTCSET, OUTCSET_CHDRV_8MA);
219 regmap_write(r_t, PLDWSET, PLDWSET_NORMAL);
220 regmap_write(r_t, HIZSET1, 0x80);
221 regmap_write(r_t, HIZSET2, 0xe0);
222 } else {
223 regmap_write(r_t, HIZSET3, 0x8f);
224 }
225 }
226
227 static void mn88443x_cmn_power_off(struct mn88443x_priv *chip)
228 {
229 gpiod_set_value_cansleep(chip->reset_gpio, 1);
230
231 clk_disable_unprepare(chip->mclk);
232 }
233
234 static void mn88443x_s_sleep(struct mn88443x_priv *chip)
235 {
236 struct regmap *r_t = chip->regmap_t;
237
238 regmap_update_bits(r_t, PWDSET, PWDSET_PSKPD_MASK,
239 PWDSET_PSKPD_DOWN);
240 }
241
242 static void mn88443x_s_wake(struct mn88443x_priv *chip)
243 {
244 struct regmap *r_t = chip->regmap_t;
245
246 regmap_update_bits(r_t, PWDSET, PWDSET_PSKPD_MASK, 0);
247 }
248
249 static void mn88443x_s_tune(struct mn88443x_priv *chip,
250 struct dtv_frontend_properties *c)
251 {
252 struct regmap *r_s = chip->regmap_s;
253
254 regmap_write(r_s, ATSIDU_S, c->stream_id >> 8);
255 regmap_write(r_s, ATSIDL_S, c->stream_id);
256 regmap_write(r_s, TSSET_S, 0);
257 }
258
259 static int mn88443x_s_read_status(struct mn88443x_priv *chip,
260 struct dtv_frontend_properties *c,
261 enum fe_status *status)
262 {
263 struct regmap *r_s = chip->regmap_s;
264 u32 cpmon, tmpu, tmpl, flg;
265 u64 tmp;
266
267 /* Sync detection */
268 regmap_read(r_s, CPMON1_S, &cpmon);
269
270 *status = 0;
271 if (cpmon & CPMON1_S_FSYNC)
272 *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
273 if (cpmon & CPMON1_S_W2LOCK)
274 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
275
276 /* Signal strength */
277 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
278
279 if (*status & FE_HAS_SIGNAL) {
280 u32 agc;
281
282 regmap_read(r_s, AGCREAD_S, &tmpu);
283 agc = tmpu << 8;
284
285 c->strength.len = 1;
286 c->strength.stat[0].scale = FE_SCALE_RELATIVE;
287 c->strength.stat[0].uvalue = agc;
288 }
289
290 /* C/N rate */
291 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
292
293 if (*status & FE_HAS_VITERBI) {
294 u32 cnr = 0, x, y, d;
295 u64 d_3 = 0;
296
297 regmap_read(r_s, CNRDXU_S, &tmpu);
298 regmap_read(r_s, CNRDXL_S, &tmpl);
299 x = (tmpu << 8) | tmpl;
300 regmap_read(r_s, CNRDYU_S, &tmpu);
301 regmap_read(r_s, CNRDYL_S, &tmpl);
302 y = (tmpu << 8) | tmpl;
303
304 /* CNR[dB]: 10 * log10(D) - 30.74 / D^3 - 3 */
305 /* D = x^2 / (2^15 * y - x^2) */
306 d = (y << 15) - x * x;
307 if (d > 0) {
308 /* (2^4 * D)^3 = 2^12 * D^3 */
309 /* 3.074 * 2^(12 + 24) = 211243671486 */
310 d_3 = div_u64(16 * x * x, d);
311 d_3 = d_3 * d_3 * d_3;
312 if (d_3)
313 d_3 = div_u64(211243671486ULL, d_3);
314 }
315
316 if (d_3) {
317 /* 0.3 * 2^24 = 5033164 */
318 tmp = (s64)2 * intlog10(x) - intlog10(abs(d)) - d_3
319 - 5033164;
320 cnr = div_u64(tmp * 10000, 1 << 24);
321 }
322
323 if (cnr) {
324 c->cnr.len = 1;
325 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
326 c->cnr.stat[0].uvalue = cnr;
327 }
328 }
329
330 /* BER */
331 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
332 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
333
334 regmap_read(r_s, BERCNFLG_S, &flg);
335
336 if ((*status & FE_HAS_VITERBI) && (flg & BERCNFLG_S_BERVRDY)) {
337 u32 bit_err, bit_cnt;
338
339 regmap_read(r_s, BERVRDU_S, &tmpu);
340 regmap_read(r_s, BERVRDL_S, &tmpl);
341 bit_err = (tmpu << 8) | tmpl;
342 bit_cnt = (1 << 13) * 204;
343
344 if (bit_cnt) {
345 c->post_bit_error.len = 1;
346 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
347 c->post_bit_error.stat[0].uvalue = bit_err;
348 c->post_bit_count.len = 1;
349 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
350 c->post_bit_count.stat[0].uvalue = bit_cnt;
351 }
352 }
353
354 return 0;
355 }
356
357 static void mn88443x_t_sleep(struct mn88443x_priv *chip)
358 {
359 struct regmap *r_t = chip->regmap_t;
360
361 regmap_update_bits(r_t, PWDSET, PWDSET_OFDMPD_MASK,
362 PWDSET_OFDMPD_DOWN);
363 }
364
365 static void mn88443x_t_wake(struct mn88443x_priv *chip)
366 {
367 struct regmap *r_t = chip->regmap_t;
368
369 regmap_update_bits(r_t, PWDSET, PWDSET_OFDMPD_MASK, 0);
370 }
371
372 static bool mn88443x_t_is_valid_clk(u32 adckt, u32 if_freq)
373 {
374 if (if_freq == DIRECT_IF_57MHZ) {
375 if (adckt >= CLK_DIRECT && adckt <= 21000000)
376 return true;
377 if (adckt >= 25300000 && adckt <= CLK_MAX)
378 return true;
379 } else if (if_freq == DIRECT_IF_44MHZ) {
380 if (adckt >= 25000000 && adckt <= CLK_MAX)
381 return true;
382 } else if (if_freq >= LOW_IF_4MHZ && if_freq < DIRECT_IF_44MHZ) {
383 if (adckt >= CLK_DIRECT && adckt <= CLK_MAX)
384 return true;
385 }
386
387 return false;
388 }
389
390 static int mn88443x_t_set_freq(struct mn88443x_priv *chip)
391 {
392 struct device *dev = &chip->client_s->dev;
393 struct regmap *r_t = chip->regmap_t;
394 s64 adckt, nco, ad_t;
395 u32 m, v;
396
397 /* Clock buffer (but not supported) or XTAL */
398 if (chip->clk_freq >= CLK_LOW && chip->clk_freq < CLK_DIRECT) {
399 chip->use_clkbuf = true;
400 regmap_write(r_t, CLKSET1_T, 0x07);
401
402 adckt = 0;
403 } else {
404 chip->use_clkbuf = false;
405 regmap_write(r_t, CLKSET1_T, 0x00);
406
407 adckt = chip->clk_freq;
408 }
409 if (!mn88443x_t_is_valid_clk(adckt, chip->if_freq)) {
410 dev_err(dev, "Invalid clock, CLK:%d, ADCKT:%lld, IF:%d\n",
411 chip->clk_freq, adckt, chip->if_freq);
412 return -EINVAL;
413 }
414
415 /* Direct IF or Low IF */
416 if (chip->if_freq == DIRECT_IF_57MHZ ||
417 chip->if_freq == DIRECT_IF_44MHZ)
418 nco = adckt * 2 - chip->if_freq;
419 else
420 nco = -((s64)chip->if_freq);
421 nco = div_s64(nco << 24, adckt);
422 ad_t = div_s64(adckt << 22, S_T_FREQ);
423
424 regmap_write(r_t, NCOFREQU_T, nco >> 16);
425 regmap_write(r_t, NCOFREQM_T, nco >> 8);
426 regmap_write(r_t, NCOFREQL_T, nco);
427 regmap_write(r_t, FADU_T, ad_t >> 16);
428 regmap_write(r_t, FADM_T, ad_t >> 8);
429 regmap_write(r_t, FADL_T, ad_t);
430
431 /* Level of IF */
432 m = ADCSET1_T_REFSEL_MASK;
433 v = ADCSET1_T_REFSEL_1_5V;
434 regmap_update_bits(r_t, ADCSET1_T, m, v);
435
436 /* Polarity of AGC */
437 v = AGCSET2_T_IFPOLINV_INC | AGCSET2_T_RFPOLINV_INC;
438 regmap_update_bits(r_t, AGCSET2_T, v, v);
439
440 /* Lower output level of AGC */
441 regmap_write(r_t, AGCV3_T, 0x00);
442
443 regmap_write(r_t, MDSET_T, 0xfa);
444
445 return 0;
446 }
447
448 static void mn88443x_t_tune(struct mn88443x_priv *chip,
449 struct dtv_frontend_properties *c)
450 {
451 struct regmap *r_t = chip->regmap_t;
452 u32 m, v;
453
454 m = MDSET_T_MDAUTO_MASK | MDSET_T_FFTS_MASK | MDSET_T_GI_MASK;
455 v = MDSET_T_MDAUTO_AUTO | MDSET_T_FFTS_MODE3 | MDSET_T_GI_1_8;
456 regmap_update_bits(r_t, MDSET_T, m, v);
457
458 regmap_write(r_t, MDASET_T, 0);
459 }
460
461 static int mn88443x_t_read_status(struct mn88443x_priv *chip,
462 struct dtv_frontend_properties *c,
463 enum fe_status *status)
464 {
465 struct regmap *r_t = chip->regmap_t;
466 u32 seqrd, st, flg, tmpu, tmpm, tmpl;
467 u64 tmp;
468
469 /* Sync detection */
470 regmap_read(r_t, SSEQRD_T, &seqrd);
471 st = seqrd & SSEQRD_T_SSEQSTRD_MASK;
472
473 *status = 0;
474 if (st >= SSEQRD_T_SSEQSTRD_SYNC)
475 *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
476 if (st >= SSEQRD_T_SSEQSTRD_FRAME_SYNC)
477 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
478
479 /* Signal strength */
480 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
481
482 if (*status & FE_HAS_SIGNAL) {
483 u32 agc;
484
485 regmap_read(r_t, AGCRDU_T, &tmpu);
486 regmap_read(r_t, AGCRDL_T, &tmpl);
487 agc = (tmpu << 8) | tmpl;
488
489 c->strength.len = 1;
490 c->strength.stat[0].scale = FE_SCALE_RELATIVE;
491 c->strength.stat[0].uvalue = agc;
492 }
493
494 /* C/N rate */
495 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
496
497 if (*status & FE_HAS_VITERBI) {
498 u32 cnr;
499
500 regmap_read(r_t, CNRDU_T, &tmpu);
501 regmap_read(r_t, CNRDL_T, &tmpl);
502
503 if (tmpu || tmpl) {
504 /* CNR[dB]: 10 * (log10(65536 / value) + 0.2) */
505 /* intlog10(65536) = 80807124, 0.2 * 2^24 = 3355443 */
506 tmp = (u64)80807124 - intlog10((tmpu << 8) | tmpl)
507 + 3355443;
508 cnr = div_u64(tmp * 10000, 1 << 24);
509 } else {
510 cnr = 0;
511 }
512
513 c->cnr.len = 1;
514 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
515 c->cnr.stat[0].uvalue = cnr;
516 }
517
518 /* BER */
519 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
520 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
521
522 regmap_read(r_t, BERFLG_T, &flg);
523
524 if ((*status & FE_HAS_VITERBI) && (flg & BERFLG_T_BERVRDYA)) {
525 u32 bit_err, bit_cnt;
526
527 regmap_read(r_t, BERRDU_T, &tmpu);
528 regmap_read(r_t, BERRDM_T, &tmpm);
529 regmap_read(r_t, BERRDL_T, &tmpl);
530 bit_err = (tmpu << 16) | (tmpm << 8) | tmpl;
531
532 regmap_read(r_t, BERLENRDU_T, &tmpu);
533 regmap_read(r_t, BERLENRDL_T, &tmpl);
534 bit_cnt = ((tmpu << 8) | tmpl) * 203 * 8;
535
536 if (bit_cnt) {
537 c->post_bit_error.len = 1;
538 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
539 c->post_bit_error.stat[0].uvalue = bit_err;
540 c->post_bit_count.len = 1;
541 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
542 c->post_bit_count.stat[0].uvalue = bit_cnt;
543 }
544 }
545
546 return 0;
547 }
548
549 static int mn88443x_sleep(struct dvb_frontend *fe)
550 {
551 struct mn88443x_priv *chip = fe->demodulator_priv;
552
553 mn88443x_s_sleep(chip);
554 mn88443x_t_sleep(chip);
555
556 return 0;
557 }
558
559 static int mn88443x_set_frontend(struct dvb_frontend *fe)
560 {
561 struct mn88443x_priv *chip = fe->demodulator_priv;
562 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
563 struct regmap *r_s = chip->regmap_s;
564 struct regmap *r_t = chip->regmap_t;
565 u8 tssel = 0, intsel = 0;
566
567 if (c->delivery_system == SYS_ISDBS) {
568 mn88443x_s_wake(chip);
569 mn88443x_t_sleep(chip);
570
571 tssel = TSSET1_TSASEL_ISDBS;
572 intsel = TSSET3_INTASEL_S;
573 } else if (c->delivery_system == SYS_ISDBT) {
574 mn88443x_s_sleep(chip);
575 mn88443x_t_wake(chip);
576
577 mn88443x_t_set_freq(chip);
578
579 tssel = TSSET1_TSASEL_ISDBT;
580 intsel = TSSET3_INTASEL_T;
581 }
582
583 regmap_update_bits(r_t, TSSET1,
584 TSSET1_TSASEL_MASK | TSSET1_TSBSEL_MASK,
585 tssel | TSSET1_TSBSEL_NONE);
586 regmap_write(r_t, TSSET2, 0);
587 regmap_update_bits(r_t, TSSET3,
588 TSSET3_INTASEL_MASK | TSSET3_INTBSEL_MASK,
589 intsel | TSSET3_INTBSEL_NONE);
590
591 regmap_write(r_t, DOSET1_T, 0x95);
592 regmap_write(r_s, DOSET1_S, 0x80);
593
594 if (c->delivery_system == SYS_ISDBS)
595 mn88443x_s_tune(chip, c);
596 else if (c->delivery_system == SYS_ISDBT)
597 mn88443x_t_tune(chip, c);
598
599 if (fe->ops.tuner_ops.set_params) {
600 if (fe->ops.i2c_gate_ctrl)
601 fe->ops.i2c_gate_ctrl(fe, 1);
602 fe->ops.tuner_ops.set_params(fe);
603 if (fe->ops.i2c_gate_ctrl)
604 fe->ops.i2c_gate_ctrl(fe, 0);
605 }
606
607 return 0;
608 }
609
610 static int mn88443x_get_tune_settings(struct dvb_frontend *fe,
611 struct dvb_frontend_tune_settings *s)
612 {
613 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
614
615 s->min_delay_ms = 850;
616
617 if (c->delivery_system == SYS_ISDBS) {
618 s->max_drift = 30000 * 2 + 1;
619 s->step_size = 30000;
620 } else if (c->delivery_system == SYS_ISDBT) {
621 s->max_drift = 142857 * 2 + 1;
622 s->step_size = 142857 * 2;
623 }
624
625 return 0;
626 }
627
628 static int mn88443x_read_status(struct dvb_frontend *fe, enum fe_status *status)
629 {
630 struct mn88443x_priv *chip = fe->demodulator_priv;
631 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
632
633 if (c->delivery_system == SYS_ISDBS)
634 return mn88443x_s_read_status(chip, c, status);
635
636 if (c->delivery_system == SYS_ISDBT)
637 return mn88443x_t_read_status(chip, c, status);
638
639 return -EINVAL;
640 }
641
642 static const struct dvb_frontend_ops mn88443x_ops = {
643 .delsys = { SYS_ISDBS, SYS_ISDBT },
644 .info = {
645 .name = "Socionext MN88443x",
646 .frequency_min_hz = 470 * MHz,
647 .frequency_max_hz = 2071 * MHz,
648 .symbol_rate_min = 28860000,
649 .symbol_rate_max = 28860000,
650 .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO |
651 FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
652 FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
653 },
654
655 .sleep = mn88443x_sleep,
656 .set_frontend = mn88443x_set_frontend,
657 .get_tune_settings = mn88443x_get_tune_settings,
658 .read_status = mn88443x_read_status,
659 };
660
661 static const struct regmap_config regmap_config = {
662 .reg_bits = 8,
663 .val_bits = 8,
664 .cache_type = REGCACHE_NONE,
665 };
666
667 static int mn88443x_probe(struct i2c_client *client,
668 const struct i2c_device_id *id)
669 {
670 struct mn88443x_config *conf = client->dev.platform_data;
671 struct mn88443x_priv *chip;
672 struct device *dev = &client->dev;
673 int ret;
674
675 chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
676 if (!chip)
677 return -ENOMEM;
678
679 if (dev->of_node)
680 chip->spec = of_device_get_match_data(dev);
681 else
682 chip->spec = (struct mn88443x_spec *)id->driver_data;
683 if (!chip->spec)
684 return -EINVAL;
685
686 chip->mclk = devm_clk_get(dev, "mclk");
687 if (IS_ERR(chip->mclk) && !conf) {
688 dev_err(dev, "Failed to request mclk: %ld\n",
689 PTR_ERR(chip->mclk));
690 return PTR_ERR(chip->mclk);
691 }
692
693 ret = of_property_read_u32(dev->of_node, "if-frequency",
694 &chip->if_freq);
695 if (ret && !conf) {
696 dev_err(dev, "Failed to load IF frequency: %d.\n", ret);
697 return ret;
698 }
699
700 chip->reset_gpio = devm_gpiod_get_optional(dev, "reset",
701 GPIOD_OUT_HIGH);
702 if (IS_ERR(chip->reset_gpio)) {
703 dev_err(dev, "Failed to request reset_gpio: %ld\n",
704 PTR_ERR(chip->reset_gpio));
705 return PTR_ERR(chip->reset_gpio);
706 }
707
708 if (conf) {
709 chip->mclk = conf->mclk;
710 chip->if_freq = conf->if_freq;
711 chip->reset_gpio = conf->reset_gpio;
712
713 *conf->fe = &chip->fe;
714 }
715
716 chip->client_s = client;
717 chip->regmap_s = devm_regmap_init_i2c(chip->client_s, &regmap_config);
718 if (IS_ERR(chip->regmap_s))
719 return PTR_ERR(chip->regmap_s);
720
721 /*
722 * Chip has two I2C addresses for each satellite/terrestrial system.
723 * ISDB-T uses address ISDB-S + 4, so we register a dummy client.
724 */
725 chip->client_t = i2c_new_dummy_device(client->adapter, client->addr + 4);
726 if (IS_ERR(chip->client_t))
727 return PTR_ERR(chip->client_t);
728
729 chip->regmap_t = devm_regmap_init_i2c(chip->client_t, &regmap_config);
730 if (IS_ERR(chip->regmap_t)) {
731 ret = PTR_ERR(chip->regmap_t);
732 goto err_i2c_t;
733 }
734
735 chip->clk_freq = clk_get_rate(chip->mclk);
736
737 memcpy(&chip->fe.ops, &mn88443x_ops, sizeof(mn88443x_ops));
738 chip->fe.demodulator_priv = chip;
739 i2c_set_clientdata(client, chip);
740
741 mn88443x_cmn_power_on(chip);
742 mn88443x_s_sleep(chip);
743 mn88443x_t_sleep(chip);
744
745 return 0;
746
747 err_i2c_t:
748 i2c_unregister_device(chip->client_t);
749
750 return ret;
751 }
752
753 static int mn88443x_remove(struct i2c_client *client)
754 {
755 struct mn88443x_priv *chip = i2c_get_clientdata(client);
756
757 mn88443x_cmn_power_off(chip);
758
759 i2c_unregister_device(chip->client_t);
760
761 return 0;
762 }
763
764 static const struct mn88443x_spec mn88443x_spec_pri = {
765 .primary = true,
766 };
767
768 static const struct mn88443x_spec mn88443x_spec_sec = {
769 .primary = false,
770 };
771
772 static const struct of_device_id mn88443x_of_match[] = {
773 { .compatible = "socionext,mn884433", .data = &mn88443x_spec_pri, },
774 { .compatible = "socionext,mn884434-0", .data = &mn88443x_spec_pri, },
775 { .compatible = "socionext,mn884434-1", .data = &mn88443x_spec_sec, },
776 {}
777 };
778 MODULE_DEVICE_TABLE(of, mn88443x_of_match);
779
780 static const struct i2c_device_id mn88443x_i2c_id[] = {
781 { "mn884433", (kernel_ulong_t)&mn88443x_spec_pri },
782 { "mn884434-0", (kernel_ulong_t)&mn88443x_spec_pri },
783 { "mn884434-1", (kernel_ulong_t)&mn88443x_spec_sec },
784 {}
785 };
786 MODULE_DEVICE_TABLE(i2c, mn88443x_i2c_id);
787
788 static struct i2c_driver mn88443x_driver = {
789 .driver = {
790 .name = "mn88443x",
791 .of_match_table = of_match_ptr(mn88443x_of_match),
792 },
793 .probe = mn88443x_probe,
794 .remove = mn88443x_remove,
795 .id_table = mn88443x_i2c_id,
796 };
797
798 module_i2c_driver(mn88443x_driver);
799
800 MODULE_AUTHOR("Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>");
801 MODULE_DESCRIPTION("Socionext MN88443x series demodulator driver.");
802 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support