Commit | Line | Data |
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c0adca73 AP |
1 | /* |
2 | * Realtek RTL2830 DVB-T demodulator driver | |
3 | * | |
4 | * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
c0adca73 AP |
16 | */ |
17 | ||
18 | #include "rtl2830_priv.h" | |
19 | ||
15d37f38 | 20 | /* Our regmap is bypassing I2C adapter lock, thus we do it! */ |
d858b0e7 MCC |
21 | static int rtl2830_bulk_write(struct i2c_client *client, unsigned int reg, |
22 | const void *val, size_t val_count) | |
c0adca73 | 23 | { |
15d37f38 | 24 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
c0adca73 | 25 | int ret; |
947debb4 | 26 | |
15d37f38 AP |
27 | i2c_lock_adapter(client->adapter); |
28 | ret = regmap_bulk_write(dev->regmap, reg, val, val_count); | |
29 | i2c_unlock_adapter(client->adapter); | |
c0adca73 AP |
30 | return ret; |
31 | } | |
32 | ||
d858b0e7 MCC |
33 | static int rtl2830_update_bits(struct i2c_client *client, unsigned int reg, |
34 | unsigned int mask, unsigned int val) | |
0485a708 | 35 | { |
1f153c4d | 36 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
0485a708 | 37 | int ret; |
fd4cfa8b | 38 | |
15d37f38 AP |
39 | i2c_lock_adapter(client->adapter); |
40 | ret = regmap_update_bits(dev->regmap, reg, mask, val); | |
41 | i2c_unlock_adapter(client->adapter); | |
fd4cfa8b | 42 | return ret; |
0485a708 AP |
43 | } |
44 | ||
d858b0e7 MCC |
45 | static int rtl2830_bulk_read(struct i2c_client *client, unsigned int reg, |
46 | void *val, size_t val_count) | |
0485a708 | 47 | { |
1f153c4d | 48 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
0485a708 | 49 | int ret; |
fd4cfa8b | 50 | |
15d37f38 AP |
51 | i2c_lock_adapter(client->adapter); |
52 | ret = regmap_bulk_read(dev->regmap, reg, val, val_count); | |
53 | i2c_unlock_adapter(client->adapter); | |
fd4cfa8b | 54 | return ret; |
0485a708 AP |
55 | } |
56 | ||
c0adca73 AP |
57 | static int rtl2830_init(struct dvb_frontend *fe) |
58 | { | |
1f153c4d AP |
59 | struct i2c_client *client = fe->demodulator_priv; |
60 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
47b4dbff | 61 | struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; |
c0adca73 | 62 | int ret, i; |
c0adca73 | 63 | struct rtl2830_reg_val_mask tab[] = { |
947debb4 AP |
64 | {0x00d, 0x01, 0x03}, |
65 | {0x00d, 0x10, 0x10}, | |
66 | {0x104, 0x00, 0x1e}, | |
67 | {0x105, 0x80, 0x80}, | |
68 | {0x110, 0x02, 0x03}, | |
69 | {0x110, 0x08, 0x0c}, | |
70 | {0x17b, 0x00, 0x40}, | |
71 | {0x17d, 0x05, 0x0f}, | |
72 | {0x17d, 0x50, 0xf0}, | |
73 | {0x18c, 0x08, 0x0f}, | |
74 | {0x18d, 0x00, 0xc0}, | |
75 | {0x188, 0x05, 0x0f}, | |
76 | {0x189, 0x00, 0xfc}, | |
77 | {0x2d5, 0x02, 0x02}, | |
78 | {0x2f1, 0x02, 0x06}, | |
79 | {0x2f1, 0x20, 0xf8}, | |
80 | {0x16d, 0x00, 0x01}, | |
81 | {0x1a6, 0x00, 0x80}, | |
82 | {0x106, dev->pdata->vtop, 0x3f}, | |
83 | {0x107, dev->pdata->krf, 0x3f}, | |
84 | {0x112, 0x28, 0xff}, | |
85 | {0x103, dev->pdata->agc_targ_val, 0xff}, | |
86 | {0x00a, 0x02, 0x07}, | |
87 | {0x140, 0x0c, 0x3c}, | |
88 | {0x140, 0x40, 0xc0}, | |
89 | {0x15b, 0x05, 0x07}, | |
90 | {0x15b, 0x28, 0x38}, | |
91 | {0x15c, 0x05, 0x07}, | |
92 | {0x15c, 0x28, 0x38}, | |
93 | {0x115, dev->pdata->spec_inv, 0x01}, | |
94 | {0x16f, 0x01, 0x07}, | |
95 | {0x170, 0x18, 0x38}, | |
96 | {0x172, 0x0f, 0x0f}, | |
97 | {0x173, 0x08, 0x38}, | |
98 | {0x175, 0x01, 0x07}, | |
99 | {0x176, 0x00, 0xc0}, | |
c0adca73 AP |
100 | }; |
101 | ||
102 | for (i = 0; i < ARRAY_SIZE(tab); i++) { | |
15d37f38 AP |
103 | ret = rtl2830_update_bits(client, tab[i].reg, tab[i].mask, |
104 | tab[i].val); | |
c0adca73 AP |
105 | if (ret) |
106 | goto err; | |
107 | } | |
108 | ||
15d37f38 | 109 | ret = rtl2830_bulk_write(client, 0x18f, "\x28\x00", 2); |
c0adca73 AP |
110 | if (ret) |
111 | goto err; | |
112 | ||
15d37f38 AP |
113 | ret = rtl2830_bulk_write(client, 0x195, |
114 | "\x04\x06\x0a\x12\x0a\x12\x1e\x28", 8); | |
c0adca73 AP |
115 | if (ret) |
116 | goto err; | |
117 | ||
c0adca73 AP |
118 | /* TODO: spec init */ |
119 | ||
120 | /* soft reset */ | |
15d37f38 | 121 | ret = rtl2830_update_bits(client, 0x101, 0x04, 0x04); |
c0adca73 AP |
122 | if (ret) |
123 | goto err; | |
124 | ||
15d37f38 | 125 | ret = rtl2830_update_bits(client, 0x101, 0x04, 0x00); |
c0adca73 AP |
126 | if (ret) |
127 | goto err; | |
128 | ||
47b4dbff | 129 | /* init stats here in order signal app which stats are supported */ |
871f7025 AP |
130 | c->strength.len = 1; |
131 | c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
47b4dbff AP |
132 | c->cnr.len = 1; |
133 | c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
5bb11ca5 AP |
134 | c->post_bit_error.len = 1; |
135 | c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
136 | c->post_bit_count.len = 1; | |
137 | c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
47b4dbff | 138 | |
f544f100 | 139 | dev->sleeping = false; |
a8567cf2 | 140 | |
c0adca73 AP |
141 | return ret; |
142 | err: | |
7cc39328 | 143 | dev_dbg(&client->dev, "failed=%d\n", ret); |
c0adca73 AP |
144 | return ret; |
145 | } | |
146 | ||
a8567cf2 AP |
147 | static int rtl2830_sleep(struct dvb_frontend *fe) |
148 | { | |
1f153c4d AP |
149 | struct i2c_client *client = fe->demodulator_priv; |
150 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
947debb4 | 151 | |
f544f100 | 152 | dev->sleeping = true; |
47b4dbff | 153 | dev->fe_status = 0; |
947debb4 | 154 | |
a8567cf2 AP |
155 | return 0; |
156 | } | |
157 | ||
a17ff2ee | 158 | static int rtl2830_get_tune_settings(struct dvb_frontend *fe, |
947debb4 | 159 | struct dvb_frontend_tune_settings *s) |
c0adca73 AP |
160 | { |
161 | s->min_delay_ms = 500; | |
162 | s->step_size = fe->ops.info.frequency_stepsize * 2; | |
163 | s->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1; | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | static int rtl2830_set_frontend(struct dvb_frontend *fe) | |
169 | { | |
1f153c4d AP |
170 | struct i2c_client *client = fe->demodulator_priv; |
171 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
c0adca73 AP |
172 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
173 | int ret, i; | |
66b3c4de | 174 | u64 num; |
15d37f38 | 175 | u8 buf[3], u8tmp; |
66b3c4de | 176 | u32 if_ctl, if_frequency; |
3a2fca26 | 177 | static const u8 bw_params1[3][34] = { |
c0adca73 AP |
178 | { |
179 | 0x1f, 0xf0, 0x1f, 0xf0, 0x1f, 0xfa, 0x00, 0x17, 0x00, 0x41, | |
180 | 0x00, 0x64, 0x00, 0x67, 0x00, 0x38, 0x1f, 0xde, 0x1f, 0x7a, | |
181 | 0x1f, 0x47, 0x1f, 0x7c, 0x00, 0x30, 0x01, 0x4b, 0x02, 0x82, | |
182 | 0x03, 0x73, 0x03, 0xcf, /* 6 MHz */ | |
183 | }, { | |
184 | 0x1f, 0xfa, 0x1f, 0xda, 0x1f, 0xc1, 0x1f, 0xb3, 0x1f, 0xca, | |
185 | 0x00, 0x07, 0x00, 0x4d, 0x00, 0x6d, 0x00, 0x40, 0x1f, 0xca, | |
186 | 0x1f, 0x4d, 0x1f, 0x2a, 0x1f, 0xb2, 0x00, 0xec, 0x02, 0x7e, | |
187 | 0x03, 0xd0, 0x04, 0x53, /* 7 MHz */ | |
188 | }, { | |
189 | 0x00, 0x10, 0x00, 0x0e, 0x1f, 0xf7, 0x1f, 0xc9, 0x1f, 0xa0, | |
190 | 0x1f, 0xa6, 0x1f, 0xec, 0x00, 0x4e, 0x00, 0x7d, 0x00, 0x3a, | |
191 | 0x1f, 0x98, 0x1f, 0x10, 0x1f, 0x40, 0x00, 0x75, 0x02, 0x5f, | |
192 | 0x04, 0x24, 0x04, 0xdb, /* 8 MHz */ | |
193 | }, | |
194 | }; | |
3a2fca26 AP |
195 | static const u8 bw_params2[3][6] = { |
196 | {0xc3, 0x0c, 0x44, 0x33, 0x33, 0x30}, /* 6 MHz */ | |
197 | {0xb8, 0xe3, 0x93, 0x99, 0x99, 0x98}, /* 7 MHz */ | |
198 | {0xae, 0xba, 0xf3, 0x26, 0x66, 0x64}, /* 8 MHz */ | |
c0adca73 AP |
199 | }; |
200 | ||
7cc39328 | 201 | dev_dbg(&client->dev, "frequency=%u bandwidth_hz=%u inversion=%u\n", |
947debb4 | 202 | c->frequency, c->bandwidth_hz, c->inversion); |
c0adca73 AP |
203 | |
204 | /* program tuner */ | |
205 | if (fe->ops.tuner_ops.set_params) | |
206 | fe->ops.tuner_ops.set_params(fe); | |
207 | ||
208 | switch (c->bandwidth_hz) { | |
209 | case 6000000: | |
210 | i = 0; | |
211 | break; | |
212 | case 7000000: | |
213 | i = 1; | |
214 | break; | |
215 | case 8000000: | |
216 | i = 2; | |
217 | break; | |
218 | default: | |
7cc39328 | 219 | dev_err(&client->dev, "invalid bandwidth_hz %u\n", |
947debb4 | 220 | c->bandwidth_hz); |
c0adca73 AP |
221 | return -EINVAL; |
222 | } | |
223 | ||
15d37f38 | 224 | ret = rtl2830_update_bits(client, 0x008, 0x06, i << 1); |
c0adca73 AP |
225 | if (ret) |
226 | goto err; | |
227 | ||
66b3c4de AP |
228 | /* program if frequency */ |
229 | if (fe->ops.tuner_ops.get_if_frequency) | |
230 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); | |
231 | else | |
232 | ret = -EINVAL; | |
947debb4 | 233 | if (ret) |
66b3c4de AP |
234 | goto err; |
235 | ||
b8cb50d2 | 236 | num = if_frequency % dev->pdata->clk; |
66b3c4de | 237 | num *= 0x400000; |
b8cb50d2 | 238 | num = div_u64(num, dev->pdata->clk); |
66b3c4de AP |
239 | num = -num; |
240 | if_ctl = num & 0x3fffff; | |
7cc39328 | 241 | dev_dbg(&client->dev, "if_frequency=%d if_ctl=%08x\n", |
947debb4 | 242 | if_frequency, if_ctl); |
66b3c4de | 243 | |
15d37f38 AP |
244 | buf[0] = (if_ctl >> 16) & 0x3f; |
245 | buf[1] = (if_ctl >> 8) & 0xff; | |
246 | buf[2] = (if_ctl >> 0) & 0xff; | |
247 | ||
248 | ret = rtl2830_bulk_read(client, 0x119, &u8tmp, 1); | |
66b3c4de AP |
249 | if (ret) |
250 | goto err; | |
251 | ||
15d37f38 | 252 | buf[0] |= u8tmp & 0xc0; /* [7:6] */ |
66b3c4de | 253 | |
15d37f38 | 254 | ret = rtl2830_bulk_write(client, 0x119, buf, 3); |
66b3c4de AP |
255 | if (ret) |
256 | goto err; | |
257 | ||
c0adca73 | 258 | /* 1/2 split I2C write */ |
15d37f38 | 259 | ret = rtl2830_bulk_write(client, 0x11c, &bw_params1[i][0], 17); |
c0adca73 AP |
260 | if (ret) |
261 | goto err; | |
262 | ||
263 | /* 2/2 split I2C write */ | |
15d37f38 | 264 | ret = rtl2830_bulk_write(client, 0x12d, &bw_params1[i][17], 17); |
c0adca73 AP |
265 | if (ret) |
266 | goto err; | |
267 | ||
15d37f38 | 268 | ret = rtl2830_bulk_write(client, 0x19d, bw_params2[i], 6); |
c0adca73 AP |
269 | if (ret) |
270 | goto err; | |
271 | ||
272 | return ret; | |
273 | err: | |
7cc39328 | 274 | dev_dbg(&client->dev, "failed=%d\n", ret); |
c0adca73 AP |
275 | return ret; |
276 | } | |
277 | ||
7e3e68bc MCC |
278 | static int rtl2830_get_frontend(struct dvb_frontend *fe, |
279 | struct dtv_frontend_properties *c) | |
631a2b61 | 280 | { |
1f153c4d AP |
281 | struct i2c_client *client = fe->demodulator_priv; |
282 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
631a2b61 AP |
283 | int ret; |
284 | u8 buf[3]; | |
285 | ||
f544f100 | 286 | if (dev->sleeping) |
c188637d AP |
287 | return 0; |
288 | ||
15d37f38 | 289 | ret = rtl2830_bulk_read(client, 0x33c, buf, 2); |
631a2b61 AP |
290 | if (ret) |
291 | goto err; | |
292 | ||
15d37f38 | 293 | ret = rtl2830_bulk_read(client, 0x351, &buf[2], 1); |
631a2b61 AP |
294 | if (ret) |
295 | goto err; | |
296 | ||
7cc39328 | 297 | dev_dbg(&client->dev, "TPS=%*ph\n", 3, buf); |
631a2b61 AP |
298 | |
299 | switch ((buf[0] >> 2) & 3) { | |
300 | case 0: | |
301 | c->modulation = QPSK; | |
302 | break; | |
303 | case 1: | |
304 | c->modulation = QAM_16; | |
305 | break; | |
306 | case 2: | |
307 | c->modulation = QAM_64; | |
308 | break; | |
309 | } | |
310 | ||
311 | switch ((buf[2] >> 2) & 1) { | |
312 | case 0: | |
313 | c->transmission_mode = TRANSMISSION_MODE_2K; | |
314 | break; | |
315 | case 1: | |
316 | c->transmission_mode = TRANSMISSION_MODE_8K; | |
317 | } | |
318 | ||
319 | switch ((buf[2] >> 0) & 3) { | |
320 | case 0: | |
321 | c->guard_interval = GUARD_INTERVAL_1_32; | |
322 | break; | |
323 | case 1: | |
324 | c->guard_interval = GUARD_INTERVAL_1_16; | |
325 | break; | |
326 | case 2: | |
327 | c->guard_interval = GUARD_INTERVAL_1_8; | |
328 | break; | |
329 | case 3: | |
330 | c->guard_interval = GUARD_INTERVAL_1_4; | |
331 | break; | |
332 | } | |
333 | ||
334 | switch ((buf[0] >> 4) & 7) { | |
335 | case 0: | |
336 | c->hierarchy = HIERARCHY_NONE; | |
337 | break; | |
338 | case 1: | |
339 | c->hierarchy = HIERARCHY_1; | |
340 | break; | |
341 | case 2: | |
342 | c->hierarchy = HIERARCHY_2; | |
343 | break; | |
344 | case 3: | |
345 | c->hierarchy = HIERARCHY_4; | |
346 | break; | |
347 | } | |
348 | ||
349 | switch ((buf[1] >> 3) & 7) { | |
350 | case 0: | |
351 | c->code_rate_HP = FEC_1_2; | |
352 | break; | |
353 | case 1: | |
354 | c->code_rate_HP = FEC_2_3; | |
355 | break; | |
356 | case 2: | |
357 | c->code_rate_HP = FEC_3_4; | |
358 | break; | |
359 | case 3: | |
360 | c->code_rate_HP = FEC_5_6; | |
361 | break; | |
362 | case 4: | |
363 | c->code_rate_HP = FEC_7_8; | |
364 | break; | |
365 | } | |
366 | ||
367 | switch ((buf[1] >> 0) & 7) { | |
368 | case 0: | |
369 | c->code_rate_LP = FEC_1_2; | |
370 | break; | |
371 | case 1: | |
372 | c->code_rate_LP = FEC_2_3; | |
373 | break; | |
374 | case 2: | |
375 | c->code_rate_LP = FEC_3_4; | |
376 | break; | |
377 | case 3: | |
378 | c->code_rate_LP = FEC_5_6; | |
379 | break; | |
380 | case 4: | |
381 | c->code_rate_LP = FEC_7_8; | |
382 | break; | |
383 | } | |
384 | ||
385 | return 0; | |
386 | err: | |
7cc39328 | 387 | dev_dbg(&client->dev, "failed=%d\n", ret); |
631a2b61 AP |
388 | return ret; |
389 | } | |
390 | ||
0df289a2 | 391 | static int rtl2830_read_status(struct dvb_frontend *fe, enum fe_status *status) |
c0adca73 | 392 | { |
1f153c4d | 393 | struct i2c_client *client = fe->demodulator_priv; |
b8cb50d2 | 394 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
4a7e445b AP |
395 | struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; |
396 | int ret, stmp; | |
397 | unsigned int utmp; | |
398 | u8 u8tmp, buf[2]; | |
947debb4 | 399 | |
c0adca73 AP |
400 | *status = 0; |
401 | ||
f544f100 | 402 | if (dev->sleeping) |
a8567cf2 AP |
403 | return 0; |
404 | ||
15d37f38 | 405 | ret = rtl2830_bulk_read(client, 0x351, &u8tmp, 1); |
c0adca73 AP |
406 | if (ret) |
407 | goto err; | |
408 | ||
15d37f38 AP |
409 | u8tmp = (u8tmp >> 3) & 0x0f; /* [6:3] */ |
410 | if (u8tmp == 11) { | |
c0adca73 AP |
411 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
412 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
15d37f38 | 413 | } else if (u8tmp == 10) { |
c0adca73 AP |
414 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
415 | FE_HAS_VITERBI; | |
416 | } | |
417 | ||
47b4dbff AP |
418 | dev->fe_status = *status; |
419 | ||
4a7e445b AP |
420 | /* Signal strength */ |
421 | if (dev->fe_status & FE_HAS_SIGNAL) { | |
422 | /* Read IF AGC */ | |
423 | ret = rtl2830_bulk_read(client, 0x359, buf, 2); | |
424 | if (ret) | |
425 | goto err; | |
426 | ||
427 | stmp = buf[0] << 8 | buf[1] << 0; | |
428 | stmp = sign_extend32(stmp, 13); | |
429 | utmp = clamp_val(-4 * stmp + 32767, 0x0000, 0xffff); | |
430 | ||
431 | dev_dbg(&client->dev, "IF AGC=%d\n", stmp); | |
432 | ||
433 | c->strength.stat[0].scale = FE_SCALE_RELATIVE; | |
434 | c->strength.stat[0].uvalue = utmp; | |
435 | } else { | |
436 | c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
437 | } | |
438 | ||
439 | /* CNR */ | |
440 | if (dev->fe_status & FE_HAS_VITERBI) { | |
441 | unsigned int hierarchy, constellation; | |
442 | #define CONSTELLATION_NUM 3 | |
443 | #define HIERARCHY_NUM 4 | |
444 | static const u32 constant[CONSTELLATION_NUM][HIERARCHY_NUM] = { | |
445 | {70705899, 70705899, 70705899, 70705899}, | |
446 | {82433173, 82433173, 87483115, 94445660}, | |
447 | {92888734, 92888734, 95487525, 99770748}, | |
448 | }; | |
449 | ||
450 | ret = rtl2830_bulk_read(client, 0x33c, &u8tmp, 1); | |
451 | if (ret) | |
452 | goto err; | |
453 | ||
454 | constellation = (u8tmp >> 2) & 0x03; /* [3:2] */ | |
455 | if (constellation > CONSTELLATION_NUM - 1) | |
456 | goto err; | |
457 | ||
458 | hierarchy = (u8tmp >> 4) & 0x07; /* [6:4] */ | |
459 | if (hierarchy > HIERARCHY_NUM - 1) | |
460 | goto err; | |
461 | ||
462 | ret = rtl2830_bulk_read(client, 0x40c, buf, 2); | |
463 | if (ret) | |
464 | goto err; | |
465 | ||
466 | utmp = buf[0] << 8 | buf[1] << 0; | |
467 | if (utmp) | |
468 | stmp = (constant[constellation][hierarchy] - | |
469 | intlog10(utmp)) / ((1 << 24) / 10000); | |
470 | else | |
471 | stmp = 0; | |
472 | ||
473 | dev_dbg(&client->dev, "CNR raw=%u\n", utmp); | |
474 | ||
475 | c->cnr.stat[0].scale = FE_SCALE_DECIBEL; | |
476 | c->cnr.stat[0].svalue = stmp; | |
477 | } else { | |
478 | c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
479 | } | |
480 | ||
481 | /* BER */ | |
482 | if (dev->fe_status & FE_HAS_LOCK) { | |
483 | ret = rtl2830_bulk_read(client, 0x34e, buf, 2); | |
484 | if (ret) | |
485 | goto err; | |
486 | ||
487 | utmp = buf[0] << 8 | buf[1] << 0; | |
488 | dev->post_bit_error += utmp; | |
489 | dev->post_bit_count += 1000000; | |
490 | ||
491 | dev_dbg(&client->dev, "BER errors=%u total=1000000\n", utmp); | |
492 | ||
493 | c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; | |
494 | c->post_bit_error.stat[0].uvalue = dev->post_bit_error; | |
495 | c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; | |
496 | c->post_bit_count.stat[0].uvalue = dev->post_bit_count; | |
497 | } else { | |
498 | c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
499 | c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
500 | } | |
501 | ||
502 | ||
c0adca73 AP |
503 | return ret; |
504 | err: | |
7cc39328 | 505 | dev_dbg(&client->dev, "failed=%d\n", ret); |
c0adca73 AP |
506 | return ret; |
507 | } | |
508 | ||
509 | static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr) | |
510 | { | |
6dcfe3cc | 511 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
eba672a0 | 512 | |
6dcfe3cc AP |
513 | if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL) |
514 | *snr = div_s64(c->cnr.stat[0].svalue, 100); | |
eba672a0 AP |
515 | else |
516 | *snr = 0; | |
517 | ||
c0adca73 AP |
518 | return 0; |
519 | } | |
520 | ||
521 | static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber) | |
522 | { | |
1f153c4d AP |
523 | struct i2c_client *client = fe->demodulator_priv; |
524 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
525ffc19 | 525 | |
f491391c AP |
526 | *ber = (dev->post_bit_error - dev->post_bit_error_prev); |
527 | dev->post_bit_error_prev = dev->post_bit_error; | |
525ffc19 | 528 | |
c0adca73 AP |
529 | return 0; |
530 | } | |
531 | ||
532 | static int rtl2830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) | |
533 | { | |
534 | *ucblocks = 0; | |
947debb4 | 535 | |
c0adca73 AP |
536 | return 0; |
537 | } | |
538 | ||
539 | static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength) | |
540 | { | |
d512e286 | 541 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
78e75075 | 542 | |
d512e286 AP |
543 | if (c->strength.stat[0].scale == FE_SCALE_RELATIVE) |
544 | *strength = c->strength.stat[0].uvalue; | |
78e75075 | 545 | else |
d512e286 | 546 | *strength = 0; |
78e75075 | 547 | |
c0adca73 AP |
548 | return 0; |
549 | } | |
550 | ||
bd336e63 | 551 | static const struct dvb_frontend_ops rtl2830_ops = { |
947debb4 | 552 | .delsys = {SYS_DVBT}, |
c0adca73 AP |
553 | .info = { |
554 | .name = "Realtek RTL2830 (DVB-T)", | |
555 | .caps = FE_CAN_FEC_1_2 | | |
556 | FE_CAN_FEC_2_3 | | |
557 | FE_CAN_FEC_3_4 | | |
558 | FE_CAN_FEC_5_6 | | |
559 | FE_CAN_FEC_7_8 | | |
560 | FE_CAN_FEC_AUTO | | |
561 | FE_CAN_QPSK | | |
562 | FE_CAN_QAM_16 | | |
563 | FE_CAN_QAM_64 | | |
564 | FE_CAN_QAM_AUTO | | |
565 | FE_CAN_TRANSMISSION_MODE_AUTO | | |
566 | FE_CAN_GUARD_INTERVAL_AUTO | | |
567 | FE_CAN_HIERARCHY_AUTO | | |
568 | FE_CAN_RECOVER | | |
569 | FE_CAN_MUTE_TS | |
570 | }, | |
571 | ||
c0adca73 | 572 | .init = rtl2830_init, |
a8567cf2 | 573 | .sleep = rtl2830_sleep, |
c0adca73 AP |
574 | |
575 | .get_tune_settings = rtl2830_get_tune_settings, | |
576 | ||
577 | .set_frontend = rtl2830_set_frontend, | |
631a2b61 | 578 | .get_frontend = rtl2830_get_frontend, |
c0adca73 AP |
579 | |
580 | .read_status = rtl2830_read_status, | |
581 | .read_snr = rtl2830_read_snr, | |
582 | .read_ber = rtl2830_read_ber, | |
583 | .read_ucblocks = rtl2830_read_ucblocks, | |
584 | .read_signal_strength = rtl2830_read_signal_strength, | |
585 | }; | |
586 | ||
df70ddad AP |
587 | static int rtl2830_pid_filter_ctrl(struct dvb_frontend *fe, int onoff) |
588 | { | |
589 | struct i2c_client *client = fe->demodulator_priv; | |
590 | int ret; | |
591 | u8 u8tmp; | |
592 | ||
593 | dev_dbg(&client->dev, "onoff=%d\n", onoff); | |
594 | ||
595 | /* enable / disable PID filter */ | |
596 | if (onoff) | |
597 | u8tmp = 0x80; | |
598 | else | |
599 | u8tmp = 0x00; | |
600 | ||
15d37f38 | 601 | ret = rtl2830_update_bits(client, 0x061, 0x80, u8tmp); |
df70ddad AP |
602 | if (ret) |
603 | goto err; | |
604 | ||
605 | return 0; | |
606 | err: | |
607 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
608 | return ret; | |
609 | } | |
610 | ||
611 | static int rtl2830_pid_filter(struct dvb_frontend *fe, u8 index, u16 pid, int onoff) | |
612 | { | |
613 | struct i2c_client *client = fe->demodulator_priv; | |
614 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
615 | int ret; | |
616 | u8 buf[4]; | |
617 | ||
618 | dev_dbg(&client->dev, "index=%d pid=%04x onoff=%d\n", | |
619 | index, pid, onoff); | |
620 | ||
621 | /* skip invalid PIDs (0x2000) */ | |
622 | if (pid > 0x1fff || index > 32) | |
623 | return 0; | |
624 | ||
625 | if (onoff) | |
626 | set_bit(index, &dev->filters); | |
627 | else | |
628 | clear_bit(index, &dev->filters); | |
629 | ||
630 | /* enable / disable PIDs */ | |
631 | buf[0] = (dev->filters >> 0) & 0xff; | |
632 | buf[1] = (dev->filters >> 8) & 0xff; | |
633 | buf[2] = (dev->filters >> 16) & 0xff; | |
634 | buf[3] = (dev->filters >> 24) & 0xff; | |
15d37f38 | 635 | ret = rtl2830_bulk_write(client, 0x062, buf, 4); |
df70ddad AP |
636 | if (ret) |
637 | goto err; | |
638 | ||
639 | /* add PID */ | |
640 | buf[0] = (pid >> 8) & 0xff; | |
641 | buf[1] = (pid >> 0) & 0xff; | |
15d37f38 | 642 | ret = rtl2830_bulk_write(client, 0x066 + 2 * index, buf, 2); |
df70ddad AP |
643 | if (ret) |
644 | goto err; | |
645 | ||
646 | return 0; | |
647 | err: | |
648 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
649 | return ret; | |
650 | } | |
651 | ||
28c08799 | 652 | /* |
15d37f38 AP |
653 | * I2C gate/mux/repeater logic |
654 | * We must use unlocked __i2c_transfer() here (through regmap) because of I2C | |
655 | * adapter lock is already taken by tuner driver. | |
656 | * Gate is closed automatically after single I2C transfer. | |
28c08799 | 657 | */ |
a0119159 | 658 | static int rtl2830_select(struct i2c_mux_core *muxc, u32 chan_id) |
28c08799 | 659 | { |
a0119159 | 660 | struct i2c_client *client = i2c_mux_priv(muxc); |
f544f100 | 661 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
28c08799 AP |
662 | int ret; |
663 | ||
fd4cfa8b AP |
664 | dev_dbg(&client->dev, "\n"); |
665 | ||
15d37f38 AP |
666 | /* open I2C repeater for 1 transfer, closes automatically */ |
667 | /* XXX: regmap_update_bits() does not lock I2C adapter */ | |
668 | ret = regmap_update_bits(dev->regmap, 0x101, 0x08, 0x08); | |
669 | if (ret) | |
28c08799 | 670 | goto err; |
28c08799 AP |
671 | |
672 | return 0; | |
28c08799 | 673 | err: |
7cc39328 | 674 | dev_dbg(&client->dev, "failed=%d\n", ret); |
28c08799 AP |
675 | return ret; |
676 | } | |
677 | ||
15d37f38 | 678 | static struct dvb_frontend *rtl2830_get_dvb_frontend(struct i2c_client *client) |
fd4cfa8b | 679 | { |
fd4cfa8b AP |
680 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
681 | ||
682 | dev_dbg(&client->dev, "\n"); | |
683 | ||
15d37f38 | 684 | return &dev->fe; |
fd4cfa8b AP |
685 | } |
686 | ||
15d37f38 | 687 | static struct i2c_adapter *rtl2830_get_i2c_adapter(struct i2c_client *client) |
28c08799 | 688 | { |
f544f100 | 689 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
28c08799 AP |
690 | |
691 | dev_dbg(&client->dev, "\n"); | |
692 | ||
a0119159 | 693 | return dev->muxc->adapter[0]; |
28c08799 AP |
694 | } |
695 | ||
15d37f38 AP |
696 | /* |
697 | * We implement own I2C access routines for regmap in order to get manual access | |
698 | * to I2C adapter lock, which is needed for I2C mux adapter. | |
699 | */ | |
700 | static int rtl2830_regmap_read(void *context, const void *reg_buf, | |
701 | size_t reg_size, void *val_buf, size_t val_size) | |
28c08799 | 702 | { |
15d37f38 AP |
703 | struct i2c_client *client = context; |
704 | int ret; | |
705 | struct i2c_msg msg[2] = { | |
706 | { | |
707 | .addr = client->addr, | |
708 | .flags = 0, | |
709 | .len = reg_size, | |
710 | .buf = (u8 *)reg_buf, | |
711 | }, { | |
712 | .addr = client->addr, | |
713 | .flags = I2C_M_RD, | |
714 | .len = val_size, | |
715 | .buf = val_buf, | |
716 | } | |
717 | }; | |
28c08799 | 718 | |
15d37f38 AP |
719 | ret = __i2c_transfer(client->adapter, msg, 2); |
720 | if (ret != 2) { | |
721 | dev_warn(&client->dev, "i2c reg read failed %d\n", ret); | |
722 | if (ret >= 0) | |
723 | ret = -EREMOTEIO; | |
724 | return ret; | |
725 | } | |
726 | return 0; | |
727 | } | |
28c08799 | 728 | |
15d37f38 AP |
729 | static int rtl2830_regmap_write(void *context, const void *data, size_t count) |
730 | { | |
731 | struct i2c_client *client = context; | |
732 | int ret; | |
733 | struct i2c_msg msg[1] = { | |
734 | { | |
735 | .addr = client->addr, | |
736 | .flags = 0, | |
737 | .len = count, | |
738 | .buf = (u8 *)data, | |
739 | } | |
740 | }; | |
741 | ||
742 | ret = __i2c_transfer(client->adapter, msg, 1); | |
743 | if (ret != 1) { | |
744 | dev_warn(&client->dev, "i2c reg write failed %d\n", ret); | |
745 | if (ret >= 0) | |
746 | ret = -EREMOTEIO; | |
747 | return ret; | |
748 | } | |
749 | return 0; | |
750 | } | |
751 | ||
752 | static int rtl2830_regmap_gather_write(void *context, const void *reg, | |
753 | size_t reg_len, const void *val, | |
754 | size_t val_len) | |
755 | { | |
756 | struct i2c_client *client = context; | |
757 | int ret; | |
758 | u8 buf[256]; | |
759 | struct i2c_msg msg[1] = { | |
760 | { | |
761 | .addr = client->addr, | |
762 | .flags = 0, | |
763 | .len = 1 + val_len, | |
764 | .buf = buf, | |
765 | } | |
766 | }; | |
767 | ||
768 | buf[0] = *(u8 const *)reg; | |
769 | memcpy(&buf[1], val, val_len); | |
770 | ||
771 | ret = __i2c_transfer(client->adapter, msg, 1); | |
772 | if (ret != 1) { | |
773 | dev_warn(&client->dev, "i2c reg write failed %d\n", ret); | |
774 | if (ret >= 0) | |
775 | ret = -EREMOTEIO; | |
776 | return ret; | |
777 | } | |
778 | return 0; | |
28c08799 AP |
779 | } |
780 | ||
781 | static int rtl2830_probe(struct i2c_client *client, | |
947debb4 | 782 | const struct i2c_device_id *id) |
28c08799 AP |
783 | { |
784 | struct rtl2830_platform_data *pdata = client->dev.platform_data; | |
f544f100 | 785 | struct rtl2830_dev *dev; |
28c08799 AP |
786 | int ret; |
787 | u8 u8tmp; | |
15d37f38 AP |
788 | static const struct regmap_bus regmap_bus = { |
789 | .read = rtl2830_regmap_read, | |
790 | .write = rtl2830_regmap_write, | |
791 | .gather_write = rtl2830_regmap_gather_write, | |
792 | .val_format_endian_default = REGMAP_ENDIAN_NATIVE, | |
793 | }; | |
794 | static const struct regmap_range_cfg regmap_range_cfg[] = { | |
795 | { | |
796 | .selector_reg = 0x00, | |
797 | .selector_mask = 0xff, | |
798 | .selector_shift = 0, | |
799 | .window_start = 0, | |
800 | .window_len = 0x100, | |
801 | .range_min = 0 * 0x100, | |
802 | .range_max = 5 * 0x100, | |
803 | }, | |
804 | }; | |
805 | static const struct regmap_config regmap_config = { | |
806 | .reg_bits = 8, | |
807 | .val_bits = 8, | |
808 | .max_register = 5 * 0x100, | |
809 | .ranges = regmap_range_cfg, | |
810 | .num_ranges = ARRAY_SIZE(regmap_range_cfg), | |
811 | }; | |
28c08799 AP |
812 | |
813 | dev_dbg(&client->dev, "\n"); | |
814 | ||
815 | if (pdata == NULL) { | |
816 | ret = -EINVAL; | |
817 | goto err; | |
818 | } | |
819 | ||
820 | /* allocate memory for the internal state */ | |
f544f100 AP |
821 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
822 | if (dev == NULL) { | |
28c08799 AP |
823 | ret = -ENOMEM; |
824 | goto err; | |
825 | } | |
826 | ||
827 | /* setup the state */ | |
f544f100 | 828 | i2c_set_clientdata(client, dev); |
47b4dbff | 829 | dev->client = client; |
b8cb50d2 | 830 | dev->pdata = client->dev.platform_data; |
f544f100 | 831 | dev->sleeping = true; |
15d37f38 AP |
832 | dev->regmap = regmap_init(&client->dev, ®map_bus, client, |
833 | ®map_config); | |
834 | if (IS_ERR(dev->regmap)) { | |
835 | ret = PTR_ERR(dev->regmap); | |
836 | goto err_kfree; | |
837 | } | |
28c08799 AP |
838 | |
839 | /* check if the demod is there */ | |
15d37f38 | 840 | ret = rtl2830_bulk_read(client, 0x000, &u8tmp, 1); |
28c08799 | 841 | if (ret) |
15d37f38 | 842 | goto err_regmap_exit; |
28c08799 AP |
843 | |
844 | /* create muxed i2c adapter for tuner */ | |
a0119159 PR |
845 | dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, 1, 0, 0, |
846 | rtl2830_select, NULL); | |
847 | if (!dev->muxc) { | |
848 | ret = -ENOMEM; | |
15d37f38 | 849 | goto err_regmap_exit; |
28c08799 | 850 | } |
a0119159 PR |
851 | dev->muxc->priv = client; |
852 | ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0); | |
853 | if (ret) | |
854 | goto err_regmap_exit; | |
28c08799 AP |
855 | |
856 | /* create dvb frontend */ | |
f544f100 | 857 | memcpy(&dev->fe.ops, &rtl2830_ops, sizeof(dev->fe.ops)); |
1f153c4d | 858 | dev->fe.demodulator_priv = client; |
28c08799 AP |
859 | |
860 | /* setup callbacks */ | |
861 | pdata->get_dvb_frontend = rtl2830_get_dvb_frontend; | |
862 | pdata->get_i2c_adapter = rtl2830_get_i2c_adapter; | |
df70ddad AP |
863 | pdata->pid_filter = rtl2830_pid_filter; |
864 | pdata->pid_filter_ctrl = rtl2830_pid_filter_ctrl; | |
28c08799 AP |
865 | |
866 | dev_info(&client->dev, "Realtek RTL2830 successfully attached\n"); | |
28c08799 | 867 | |
947debb4 | 868 | return 0; |
15d37f38 AP |
869 | err_regmap_exit: |
870 | regmap_exit(dev->regmap); | |
28c08799 | 871 | err_kfree: |
f544f100 | 872 | kfree(dev); |
28c08799 AP |
873 | err: |
874 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
875 | return ret; | |
876 | } | |
877 | ||
878 | static int rtl2830_remove(struct i2c_client *client) | |
879 | { | |
f544f100 | 880 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
28c08799 AP |
881 | |
882 | dev_dbg(&client->dev, "\n"); | |
883 | ||
a0119159 | 884 | i2c_mux_del_adapters(dev->muxc); |
15d37f38 | 885 | regmap_exit(dev->regmap); |
f544f100 | 886 | kfree(dev); |
947debb4 | 887 | |
28c08799 AP |
888 | return 0; |
889 | } | |
890 | ||
891 | static const struct i2c_device_id rtl2830_id_table[] = { | |
892 | {"rtl2830", 0}, | |
893 | {} | |
894 | }; | |
895 | MODULE_DEVICE_TABLE(i2c, rtl2830_id_table); | |
896 | ||
897 | static struct i2c_driver rtl2830_driver = { | |
898 | .driver = { | |
95e7cdb7 AP |
899 | .name = "rtl2830", |
900 | .suppress_bind_attrs = true, | |
28c08799 AP |
901 | }, |
902 | .probe = rtl2830_probe, | |
903 | .remove = rtl2830_remove, | |
904 | .id_table = rtl2830_id_table, | |
905 | }; | |
906 | ||
907 | module_i2c_driver(rtl2830_driver); | |
908 | ||
c0adca73 AP |
909 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
910 | MODULE_DESCRIPTION("Realtek RTL2830 DVB-T demodulator driver"); | |
911 | MODULE_LICENSE("GPL"); |