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 AP |
138 | /* start statistics polling */ |
139 | schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); | |
140 | ||
f544f100 | 141 | dev->sleeping = false; |
a8567cf2 | 142 | |
c0adca73 AP |
143 | return ret; |
144 | err: | |
7cc39328 | 145 | dev_dbg(&client->dev, "failed=%d\n", ret); |
c0adca73 AP |
146 | return ret; |
147 | } | |
148 | ||
a8567cf2 AP |
149 | static int rtl2830_sleep(struct dvb_frontend *fe) |
150 | { | |
1f153c4d AP |
151 | struct i2c_client *client = fe->demodulator_priv; |
152 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
947debb4 | 153 | |
f544f100 | 154 | dev->sleeping = true; |
47b4dbff AP |
155 | /* stop statistics polling */ |
156 | cancel_delayed_work_sync(&dev->stat_work); | |
157 | dev->fe_status = 0; | |
947debb4 | 158 | |
a8567cf2 AP |
159 | return 0; |
160 | } | |
161 | ||
a17ff2ee | 162 | static int rtl2830_get_tune_settings(struct dvb_frontend *fe, |
947debb4 | 163 | struct dvb_frontend_tune_settings *s) |
c0adca73 AP |
164 | { |
165 | s->min_delay_ms = 500; | |
166 | s->step_size = fe->ops.info.frequency_stepsize * 2; | |
167 | s->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1; | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | static int rtl2830_set_frontend(struct dvb_frontend *fe) | |
173 | { | |
1f153c4d AP |
174 | struct i2c_client *client = fe->demodulator_priv; |
175 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
c0adca73 AP |
176 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
177 | int ret, i; | |
66b3c4de | 178 | u64 num; |
15d37f38 | 179 | u8 buf[3], u8tmp; |
66b3c4de | 180 | u32 if_ctl, if_frequency; |
3a2fca26 | 181 | static const u8 bw_params1[3][34] = { |
c0adca73 AP |
182 | { |
183 | 0x1f, 0xf0, 0x1f, 0xf0, 0x1f, 0xfa, 0x00, 0x17, 0x00, 0x41, | |
184 | 0x00, 0x64, 0x00, 0x67, 0x00, 0x38, 0x1f, 0xde, 0x1f, 0x7a, | |
185 | 0x1f, 0x47, 0x1f, 0x7c, 0x00, 0x30, 0x01, 0x4b, 0x02, 0x82, | |
186 | 0x03, 0x73, 0x03, 0xcf, /* 6 MHz */ | |
187 | }, { | |
188 | 0x1f, 0xfa, 0x1f, 0xda, 0x1f, 0xc1, 0x1f, 0xb3, 0x1f, 0xca, | |
189 | 0x00, 0x07, 0x00, 0x4d, 0x00, 0x6d, 0x00, 0x40, 0x1f, 0xca, | |
190 | 0x1f, 0x4d, 0x1f, 0x2a, 0x1f, 0xb2, 0x00, 0xec, 0x02, 0x7e, | |
191 | 0x03, 0xd0, 0x04, 0x53, /* 7 MHz */ | |
192 | }, { | |
193 | 0x00, 0x10, 0x00, 0x0e, 0x1f, 0xf7, 0x1f, 0xc9, 0x1f, 0xa0, | |
194 | 0x1f, 0xa6, 0x1f, 0xec, 0x00, 0x4e, 0x00, 0x7d, 0x00, 0x3a, | |
195 | 0x1f, 0x98, 0x1f, 0x10, 0x1f, 0x40, 0x00, 0x75, 0x02, 0x5f, | |
196 | 0x04, 0x24, 0x04, 0xdb, /* 8 MHz */ | |
197 | }, | |
198 | }; | |
3a2fca26 AP |
199 | static const u8 bw_params2[3][6] = { |
200 | {0xc3, 0x0c, 0x44, 0x33, 0x33, 0x30}, /* 6 MHz */ | |
201 | {0xb8, 0xe3, 0x93, 0x99, 0x99, 0x98}, /* 7 MHz */ | |
202 | {0xae, 0xba, 0xf3, 0x26, 0x66, 0x64}, /* 8 MHz */ | |
c0adca73 AP |
203 | }; |
204 | ||
7cc39328 | 205 | dev_dbg(&client->dev, "frequency=%u bandwidth_hz=%u inversion=%u\n", |
947debb4 | 206 | c->frequency, c->bandwidth_hz, c->inversion); |
c0adca73 AP |
207 | |
208 | /* program tuner */ | |
209 | if (fe->ops.tuner_ops.set_params) | |
210 | fe->ops.tuner_ops.set_params(fe); | |
211 | ||
212 | switch (c->bandwidth_hz) { | |
213 | case 6000000: | |
214 | i = 0; | |
215 | break; | |
216 | case 7000000: | |
217 | i = 1; | |
218 | break; | |
219 | case 8000000: | |
220 | i = 2; | |
221 | break; | |
222 | default: | |
7cc39328 | 223 | dev_err(&client->dev, "invalid bandwidth_hz %u\n", |
947debb4 | 224 | c->bandwidth_hz); |
c0adca73 AP |
225 | return -EINVAL; |
226 | } | |
227 | ||
15d37f38 | 228 | ret = rtl2830_update_bits(client, 0x008, 0x06, i << 1); |
c0adca73 AP |
229 | if (ret) |
230 | goto err; | |
231 | ||
66b3c4de AP |
232 | /* program if frequency */ |
233 | if (fe->ops.tuner_ops.get_if_frequency) | |
234 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); | |
235 | else | |
236 | ret = -EINVAL; | |
947debb4 | 237 | if (ret) |
66b3c4de AP |
238 | goto err; |
239 | ||
b8cb50d2 | 240 | num = if_frequency % dev->pdata->clk; |
66b3c4de | 241 | num *= 0x400000; |
b8cb50d2 | 242 | num = div_u64(num, dev->pdata->clk); |
66b3c4de AP |
243 | num = -num; |
244 | if_ctl = num & 0x3fffff; | |
7cc39328 | 245 | dev_dbg(&client->dev, "if_frequency=%d if_ctl=%08x\n", |
947debb4 | 246 | if_frequency, if_ctl); |
66b3c4de | 247 | |
15d37f38 AP |
248 | buf[0] = (if_ctl >> 16) & 0x3f; |
249 | buf[1] = (if_ctl >> 8) & 0xff; | |
250 | buf[2] = (if_ctl >> 0) & 0xff; | |
251 | ||
252 | ret = rtl2830_bulk_read(client, 0x119, &u8tmp, 1); | |
66b3c4de AP |
253 | if (ret) |
254 | goto err; | |
255 | ||
15d37f38 | 256 | buf[0] |= u8tmp & 0xc0; /* [7:6] */ |
66b3c4de | 257 | |
15d37f38 | 258 | ret = rtl2830_bulk_write(client, 0x119, buf, 3); |
66b3c4de AP |
259 | if (ret) |
260 | goto err; | |
261 | ||
c0adca73 | 262 | /* 1/2 split I2C write */ |
15d37f38 | 263 | ret = rtl2830_bulk_write(client, 0x11c, &bw_params1[i][0], 17); |
c0adca73 AP |
264 | if (ret) |
265 | goto err; | |
266 | ||
267 | /* 2/2 split I2C write */ | |
15d37f38 | 268 | ret = rtl2830_bulk_write(client, 0x12d, &bw_params1[i][17], 17); |
c0adca73 AP |
269 | if (ret) |
270 | goto err; | |
271 | ||
15d37f38 | 272 | ret = rtl2830_bulk_write(client, 0x19d, bw_params2[i], 6); |
c0adca73 AP |
273 | if (ret) |
274 | goto err; | |
275 | ||
276 | return ret; | |
277 | err: | |
7cc39328 | 278 | dev_dbg(&client->dev, "failed=%d\n", ret); |
c0adca73 AP |
279 | return ret; |
280 | } | |
281 | ||
631a2b61 AP |
282 | static int rtl2830_get_frontend(struct dvb_frontend *fe) |
283 | { | |
1f153c4d AP |
284 | struct i2c_client *client = fe->demodulator_priv; |
285 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
631a2b61 AP |
286 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
287 | int ret; | |
288 | u8 buf[3]; | |
289 | ||
f544f100 | 290 | if (dev->sleeping) |
c188637d AP |
291 | return 0; |
292 | ||
15d37f38 | 293 | ret = rtl2830_bulk_read(client, 0x33c, buf, 2); |
631a2b61 AP |
294 | if (ret) |
295 | goto err; | |
296 | ||
15d37f38 | 297 | ret = rtl2830_bulk_read(client, 0x351, &buf[2], 1); |
631a2b61 AP |
298 | if (ret) |
299 | goto err; | |
300 | ||
7cc39328 | 301 | dev_dbg(&client->dev, "TPS=%*ph\n", 3, buf); |
631a2b61 AP |
302 | |
303 | switch ((buf[0] >> 2) & 3) { | |
304 | case 0: | |
305 | c->modulation = QPSK; | |
306 | break; | |
307 | case 1: | |
308 | c->modulation = QAM_16; | |
309 | break; | |
310 | case 2: | |
311 | c->modulation = QAM_64; | |
312 | break; | |
313 | } | |
314 | ||
315 | switch ((buf[2] >> 2) & 1) { | |
316 | case 0: | |
317 | c->transmission_mode = TRANSMISSION_MODE_2K; | |
318 | break; | |
319 | case 1: | |
320 | c->transmission_mode = TRANSMISSION_MODE_8K; | |
321 | } | |
322 | ||
323 | switch ((buf[2] >> 0) & 3) { | |
324 | case 0: | |
325 | c->guard_interval = GUARD_INTERVAL_1_32; | |
326 | break; | |
327 | case 1: | |
328 | c->guard_interval = GUARD_INTERVAL_1_16; | |
329 | break; | |
330 | case 2: | |
331 | c->guard_interval = GUARD_INTERVAL_1_8; | |
332 | break; | |
333 | case 3: | |
334 | c->guard_interval = GUARD_INTERVAL_1_4; | |
335 | break; | |
336 | } | |
337 | ||
338 | switch ((buf[0] >> 4) & 7) { | |
339 | case 0: | |
340 | c->hierarchy = HIERARCHY_NONE; | |
341 | break; | |
342 | case 1: | |
343 | c->hierarchy = HIERARCHY_1; | |
344 | break; | |
345 | case 2: | |
346 | c->hierarchy = HIERARCHY_2; | |
347 | break; | |
348 | case 3: | |
349 | c->hierarchy = HIERARCHY_4; | |
350 | break; | |
351 | } | |
352 | ||
353 | switch ((buf[1] >> 3) & 7) { | |
354 | case 0: | |
355 | c->code_rate_HP = FEC_1_2; | |
356 | break; | |
357 | case 1: | |
358 | c->code_rate_HP = FEC_2_3; | |
359 | break; | |
360 | case 2: | |
361 | c->code_rate_HP = FEC_3_4; | |
362 | break; | |
363 | case 3: | |
364 | c->code_rate_HP = FEC_5_6; | |
365 | break; | |
366 | case 4: | |
367 | c->code_rate_HP = FEC_7_8; | |
368 | break; | |
369 | } | |
370 | ||
371 | switch ((buf[1] >> 0) & 7) { | |
372 | case 0: | |
373 | c->code_rate_LP = FEC_1_2; | |
374 | break; | |
375 | case 1: | |
376 | c->code_rate_LP = FEC_2_3; | |
377 | break; | |
378 | case 2: | |
379 | c->code_rate_LP = FEC_3_4; | |
380 | break; | |
381 | case 3: | |
382 | c->code_rate_LP = FEC_5_6; | |
383 | break; | |
384 | case 4: | |
385 | c->code_rate_LP = FEC_7_8; | |
386 | break; | |
387 | } | |
388 | ||
389 | return 0; | |
390 | err: | |
7cc39328 | 391 | dev_dbg(&client->dev, "failed=%d\n", ret); |
631a2b61 AP |
392 | return ret; |
393 | } | |
394 | ||
0df289a2 | 395 | static int rtl2830_read_status(struct dvb_frontend *fe, enum fe_status *status) |
c0adca73 | 396 | { |
1f153c4d | 397 | struct i2c_client *client = fe->demodulator_priv; |
b8cb50d2 | 398 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
c0adca73 | 399 | int ret; |
15d37f38 | 400 | u8 u8tmp; |
947debb4 | 401 | |
c0adca73 AP |
402 | *status = 0; |
403 | ||
f544f100 | 404 | if (dev->sleeping) |
a8567cf2 AP |
405 | return 0; |
406 | ||
15d37f38 | 407 | ret = rtl2830_bulk_read(client, 0x351, &u8tmp, 1); |
c0adca73 AP |
408 | if (ret) |
409 | goto err; | |
410 | ||
15d37f38 AP |
411 | u8tmp = (u8tmp >> 3) & 0x0f; /* [6:3] */ |
412 | if (u8tmp == 11) { | |
c0adca73 AP |
413 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
414 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
15d37f38 | 415 | } else if (u8tmp == 10) { |
c0adca73 AP |
416 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
417 | FE_HAS_VITERBI; | |
418 | } | |
419 | ||
47b4dbff AP |
420 | dev->fe_status = *status; |
421 | ||
c0adca73 AP |
422 | return ret; |
423 | err: | |
7cc39328 | 424 | dev_dbg(&client->dev, "failed=%d\n", ret); |
c0adca73 AP |
425 | return ret; |
426 | } | |
427 | ||
428 | static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr) | |
429 | { | |
6dcfe3cc | 430 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
eba672a0 | 431 | |
6dcfe3cc AP |
432 | if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL) |
433 | *snr = div_s64(c->cnr.stat[0].svalue, 100); | |
eba672a0 AP |
434 | else |
435 | *snr = 0; | |
436 | ||
c0adca73 AP |
437 | return 0; |
438 | } | |
439 | ||
440 | static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber) | |
441 | { | |
1f153c4d AP |
442 | struct i2c_client *client = fe->demodulator_priv; |
443 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
525ffc19 | 444 | |
f491391c AP |
445 | *ber = (dev->post_bit_error - dev->post_bit_error_prev); |
446 | dev->post_bit_error_prev = dev->post_bit_error; | |
525ffc19 | 447 | |
c0adca73 AP |
448 | return 0; |
449 | } | |
450 | ||
451 | static int rtl2830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) | |
452 | { | |
453 | *ucblocks = 0; | |
947debb4 | 454 | |
c0adca73 AP |
455 | return 0; |
456 | } | |
457 | ||
458 | static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength) | |
459 | { | |
d512e286 | 460 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
78e75075 | 461 | |
d512e286 AP |
462 | if (c->strength.stat[0].scale == FE_SCALE_RELATIVE) |
463 | *strength = c->strength.stat[0].uvalue; | |
78e75075 | 464 | else |
d512e286 | 465 | *strength = 0; |
78e75075 | 466 | |
c0adca73 AP |
467 | return 0; |
468 | } | |
469 | ||
c0adca73 | 470 | static struct dvb_frontend_ops rtl2830_ops = { |
947debb4 | 471 | .delsys = {SYS_DVBT}, |
c0adca73 AP |
472 | .info = { |
473 | .name = "Realtek RTL2830 (DVB-T)", | |
474 | .caps = FE_CAN_FEC_1_2 | | |
475 | FE_CAN_FEC_2_3 | | |
476 | FE_CAN_FEC_3_4 | | |
477 | FE_CAN_FEC_5_6 | | |
478 | FE_CAN_FEC_7_8 | | |
479 | FE_CAN_FEC_AUTO | | |
480 | FE_CAN_QPSK | | |
481 | FE_CAN_QAM_16 | | |
482 | FE_CAN_QAM_64 | | |
483 | FE_CAN_QAM_AUTO | | |
484 | FE_CAN_TRANSMISSION_MODE_AUTO | | |
485 | FE_CAN_GUARD_INTERVAL_AUTO | | |
486 | FE_CAN_HIERARCHY_AUTO | | |
487 | FE_CAN_RECOVER | | |
488 | FE_CAN_MUTE_TS | |
489 | }, | |
490 | ||
c0adca73 | 491 | .init = rtl2830_init, |
a8567cf2 | 492 | .sleep = rtl2830_sleep, |
c0adca73 AP |
493 | |
494 | .get_tune_settings = rtl2830_get_tune_settings, | |
495 | ||
496 | .set_frontend = rtl2830_set_frontend, | |
631a2b61 | 497 | .get_frontend = rtl2830_get_frontend, |
c0adca73 AP |
498 | |
499 | .read_status = rtl2830_read_status, | |
500 | .read_snr = rtl2830_read_snr, | |
501 | .read_ber = rtl2830_read_ber, | |
502 | .read_ucblocks = rtl2830_read_ucblocks, | |
503 | .read_signal_strength = rtl2830_read_signal_strength, | |
504 | }; | |
505 | ||
47b4dbff AP |
506 | static void rtl2830_stat_work(struct work_struct *work) |
507 | { | |
508 | struct rtl2830_dev *dev = container_of(work, struct rtl2830_dev, stat_work.work); | |
509 | struct i2c_client *client = dev->client; | |
510 | struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache; | |
511 | int ret, tmp; | |
512 | u8 u8tmp, buf[2]; | |
513 | u16 u16tmp; | |
514 | ||
515 | dev_dbg(&client->dev, "\n"); | |
516 | ||
871f7025 AP |
517 | /* signal strength */ |
518 | if (dev->fe_status & FE_HAS_SIGNAL) { | |
519 | struct {signed int x:14; } s; | |
520 | ||
521 | /* read IF AGC */ | |
15d37f38 | 522 | ret = rtl2830_bulk_read(client, 0x359, buf, 2); |
871f7025 AP |
523 | if (ret) |
524 | goto err; | |
525 | ||
526 | u16tmp = buf[0] << 8 | buf[1] << 0; | |
527 | u16tmp &= 0x3fff; /* [13:0] */ | |
528 | tmp = s.x = u16tmp; /* 14-bit bin to 2 complement */ | |
529 | u16tmp = clamp_val(-4 * tmp + 32767, 0x0000, 0xffff); | |
530 | ||
531 | dev_dbg(&client->dev, "IF AGC=%d\n", tmp); | |
532 | ||
533 | c->strength.stat[0].scale = FE_SCALE_RELATIVE; | |
534 | c->strength.stat[0].uvalue = u16tmp; | |
535 | } else { | |
536 | c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
537 | } | |
538 | ||
47b4dbff AP |
539 | /* CNR */ |
540 | if (dev->fe_status & FE_HAS_VITERBI) { | |
541 | unsigned hierarchy, constellation; | |
542 | #define CONSTELLATION_NUM 3 | |
543 | #define HIERARCHY_NUM 4 | |
544 | static const u32 constant[CONSTELLATION_NUM][HIERARCHY_NUM] = { | |
545 | {70705899, 70705899, 70705899, 70705899}, | |
546 | {82433173, 82433173, 87483115, 94445660}, | |
547 | {92888734, 92888734, 95487525, 99770748}, | |
548 | }; | |
549 | ||
15d37f38 | 550 | ret = rtl2830_bulk_read(client, 0x33c, &u8tmp, 1); |
47b4dbff AP |
551 | if (ret) |
552 | goto err; | |
553 | ||
554 | constellation = (u8tmp >> 2) & 0x03; /* [3:2] */ | |
555 | if (constellation > CONSTELLATION_NUM - 1) | |
556 | goto err_schedule_delayed_work; | |
557 | ||
558 | hierarchy = (u8tmp >> 4) & 0x07; /* [6:4] */ | |
559 | if (hierarchy > HIERARCHY_NUM - 1) | |
560 | goto err_schedule_delayed_work; | |
561 | ||
15d37f38 | 562 | ret = rtl2830_bulk_read(client, 0x40c, buf, 2); |
47b4dbff AP |
563 | if (ret) |
564 | goto err; | |
565 | ||
566 | u16tmp = buf[0] << 8 | buf[1] << 0; | |
567 | if (u16tmp) | |
568 | tmp = (constant[constellation][hierarchy] - | |
569 | intlog10(u16tmp)) / ((1 << 24) / 10000); | |
570 | else | |
571 | tmp = 0; | |
572 | ||
573 | dev_dbg(&client->dev, "CNR raw=%u\n", u16tmp); | |
574 | ||
575 | c->cnr.stat[0].scale = FE_SCALE_DECIBEL; | |
576 | c->cnr.stat[0].svalue = tmp; | |
577 | } else { | |
578 | c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
579 | } | |
580 | ||
5bb11ca5 AP |
581 | /* BER */ |
582 | if (dev->fe_status & FE_HAS_LOCK) { | |
15d37f38 | 583 | ret = rtl2830_bulk_read(client, 0x34e, buf, 2); |
5bb11ca5 AP |
584 | if (ret) |
585 | goto err; | |
586 | ||
587 | u16tmp = buf[0] << 8 | buf[1] << 0; | |
588 | dev->post_bit_error += u16tmp; | |
589 | dev->post_bit_count += 1000000; | |
590 | ||
591 | dev_dbg(&client->dev, "BER errors=%u total=1000000\n", u16tmp); | |
592 | ||
593 | c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; | |
594 | c->post_bit_error.stat[0].uvalue = dev->post_bit_error; | |
595 | c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; | |
596 | c->post_bit_count.stat[0].uvalue = dev->post_bit_count; | |
597 | } else { | |
598 | c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
599 | c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
600 | } | |
601 | ||
47b4dbff AP |
602 | err_schedule_delayed_work: |
603 | schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000)); | |
604 | return; | |
605 | err: | |
606 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
607 | } | |
608 | ||
df70ddad AP |
609 | static int rtl2830_pid_filter_ctrl(struct dvb_frontend *fe, int onoff) |
610 | { | |
611 | struct i2c_client *client = fe->demodulator_priv; | |
612 | int ret; | |
613 | u8 u8tmp; | |
614 | ||
615 | dev_dbg(&client->dev, "onoff=%d\n", onoff); | |
616 | ||
617 | /* enable / disable PID filter */ | |
618 | if (onoff) | |
619 | u8tmp = 0x80; | |
620 | else | |
621 | u8tmp = 0x00; | |
622 | ||
15d37f38 | 623 | ret = rtl2830_update_bits(client, 0x061, 0x80, u8tmp); |
df70ddad AP |
624 | if (ret) |
625 | goto err; | |
626 | ||
627 | return 0; | |
628 | err: | |
629 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
630 | return ret; | |
631 | } | |
632 | ||
633 | static int rtl2830_pid_filter(struct dvb_frontend *fe, u8 index, u16 pid, int onoff) | |
634 | { | |
635 | struct i2c_client *client = fe->demodulator_priv; | |
636 | struct rtl2830_dev *dev = i2c_get_clientdata(client); | |
637 | int ret; | |
638 | u8 buf[4]; | |
639 | ||
640 | dev_dbg(&client->dev, "index=%d pid=%04x onoff=%d\n", | |
641 | index, pid, onoff); | |
642 | ||
643 | /* skip invalid PIDs (0x2000) */ | |
644 | if (pid > 0x1fff || index > 32) | |
645 | return 0; | |
646 | ||
647 | if (onoff) | |
648 | set_bit(index, &dev->filters); | |
649 | else | |
650 | clear_bit(index, &dev->filters); | |
651 | ||
652 | /* enable / disable PIDs */ | |
653 | buf[0] = (dev->filters >> 0) & 0xff; | |
654 | buf[1] = (dev->filters >> 8) & 0xff; | |
655 | buf[2] = (dev->filters >> 16) & 0xff; | |
656 | buf[3] = (dev->filters >> 24) & 0xff; | |
15d37f38 | 657 | ret = rtl2830_bulk_write(client, 0x062, buf, 4); |
df70ddad AP |
658 | if (ret) |
659 | goto err; | |
660 | ||
661 | /* add PID */ | |
662 | buf[0] = (pid >> 8) & 0xff; | |
663 | buf[1] = (pid >> 0) & 0xff; | |
15d37f38 | 664 | ret = rtl2830_bulk_write(client, 0x066 + 2 * index, buf, 2); |
df70ddad AP |
665 | if (ret) |
666 | goto err; | |
667 | ||
668 | return 0; | |
669 | err: | |
670 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
671 | return ret; | |
672 | } | |
673 | ||
28c08799 | 674 | /* |
15d37f38 AP |
675 | * I2C gate/mux/repeater logic |
676 | * We must use unlocked __i2c_transfer() here (through regmap) because of I2C | |
677 | * adapter lock is already taken by tuner driver. | |
678 | * Gate is closed automatically after single I2C transfer. | |
28c08799 AP |
679 | */ |
680 | static int rtl2830_select(struct i2c_adapter *adap, void *mux_priv, u32 chan_id) | |
681 | { | |
682 | struct i2c_client *client = mux_priv; | |
f544f100 | 683 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
28c08799 AP |
684 | int ret; |
685 | ||
fd4cfa8b AP |
686 | dev_dbg(&client->dev, "\n"); |
687 | ||
15d37f38 AP |
688 | /* open I2C repeater for 1 transfer, closes automatically */ |
689 | /* XXX: regmap_update_bits() does not lock I2C adapter */ | |
690 | ret = regmap_update_bits(dev->regmap, 0x101, 0x08, 0x08); | |
691 | if (ret) | |
28c08799 | 692 | goto err; |
28c08799 AP |
693 | |
694 | return 0; | |
28c08799 | 695 | err: |
7cc39328 | 696 | dev_dbg(&client->dev, "failed=%d\n", ret); |
28c08799 AP |
697 | return ret; |
698 | } | |
699 | ||
15d37f38 | 700 | static struct dvb_frontend *rtl2830_get_dvb_frontend(struct i2c_client *client) |
fd4cfa8b | 701 | { |
fd4cfa8b AP |
702 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
703 | ||
704 | dev_dbg(&client->dev, "\n"); | |
705 | ||
15d37f38 | 706 | return &dev->fe; |
fd4cfa8b AP |
707 | } |
708 | ||
15d37f38 | 709 | static struct i2c_adapter *rtl2830_get_i2c_adapter(struct i2c_client *client) |
28c08799 | 710 | { |
f544f100 | 711 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
28c08799 AP |
712 | |
713 | dev_dbg(&client->dev, "\n"); | |
714 | ||
15d37f38 | 715 | return dev->adapter; |
28c08799 AP |
716 | } |
717 | ||
15d37f38 AP |
718 | /* |
719 | * We implement own I2C access routines for regmap in order to get manual access | |
720 | * to I2C adapter lock, which is needed for I2C mux adapter. | |
721 | */ | |
722 | static int rtl2830_regmap_read(void *context, const void *reg_buf, | |
723 | size_t reg_size, void *val_buf, size_t val_size) | |
28c08799 | 724 | { |
15d37f38 AP |
725 | struct i2c_client *client = context; |
726 | int ret; | |
727 | struct i2c_msg msg[2] = { | |
728 | { | |
729 | .addr = client->addr, | |
730 | .flags = 0, | |
731 | .len = reg_size, | |
732 | .buf = (u8 *)reg_buf, | |
733 | }, { | |
734 | .addr = client->addr, | |
735 | .flags = I2C_M_RD, | |
736 | .len = val_size, | |
737 | .buf = val_buf, | |
738 | } | |
739 | }; | |
28c08799 | 740 | |
15d37f38 AP |
741 | ret = __i2c_transfer(client->adapter, msg, 2); |
742 | if (ret != 2) { | |
743 | dev_warn(&client->dev, "i2c reg read failed %d\n", ret); | |
744 | if (ret >= 0) | |
745 | ret = -EREMOTEIO; | |
746 | return ret; | |
747 | } | |
748 | return 0; | |
749 | } | |
28c08799 | 750 | |
15d37f38 AP |
751 | static int rtl2830_regmap_write(void *context, const void *data, size_t count) |
752 | { | |
753 | struct i2c_client *client = context; | |
754 | int ret; | |
755 | struct i2c_msg msg[1] = { | |
756 | { | |
757 | .addr = client->addr, | |
758 | .flags = 0, | |
759 | .len = count, | |
760 | .buf = (u8 *)data, | |
761 | } | |
762 | }; | |
763 | ||
764 | ret = __i2c_transfer(client->adapter, msg, 1); | |
765 | if (ret != 1) { | |
766 | dev_warn(&client->dev, "i2c reg write failed %d\n", ret); | |
767 | if (ret >= 0) | |
768 | ret = -EREMOTEIO; | |
769 | return ret; | |
770 | } | |
771 | return 0; | |
772 | } | |
773 | ||
774 | static int rtl2830_regmap_gather_write(void *context, const void *reg, | |
775 | size_t reg_len, const void *val, | |
776 | size_t val_len) | |
777 | { | |
778 | struct i2c_client *client = context; | |
779 | int ret; | |
780 | u8 buf[256]; | |
781 | struct i2c_msg msg[1] = { | |
782 | { | |
783 | .addr = client->addr, | |
784 | .flags = 0, | |
785 | .len = 1 + val_len, | |
786 | .buf = buf, | |
787 | } | |
788 | }; | |
789 | ||
790 | buf[0] = *(u8 const *)reg; | |
791 | memcpy(&buf[1], val, val_len); | |
792 | ||
793 | ret = __i2c_transfer(client->adapter, msg, 1); | |
794 | if (ret != 1) { | |
795 | dev_warn(&client->dev, "i2c reg write failed %d\n", ret); | |
796 | if (ret >= 0) | |
797 | ret = -EREMOTEIO; | |
798 | return ret; | |
799 | } | |
800 | return 0; | |
28c08799 AP |
801 | } |
802 | ||
803 | static int rtl2830_probe(struct i2c_client *client, | |
947debb4 | 804 | const struct i2c_device_id *id) |
28c08799 AP |
805 | { |
806 | struct rtl2830_platform_data *pdata = client->dev.platform_data; | |
f544f100 | 807 | struct rtl2830_dev *dev; |
28c08799 AP |
808 | int ret; |
809 | u8 u8tmp; | |
15d37f38 AP |
810 | static const struct regmap_bus regmap_bus = { |
811 | .read = rtl2830_regmap_read, | |
812 | .write = rtl2830_regmap_write, | |
813 | .gather_write = rtl2830_regmap_gather_write, | |
814 | .val_format_endian_default = REGMAP_ENDIAN_NATIVE, | |
815 | }; | |
816 | static const struct regmap_range_cfg regmap_range_cfg[] = { | |
817 | { | |
818 | .selector_reg = 0x00, | |
819 | .selector_mask = 0xff, | |
820 | .selector_shift = 0, | |
821 | .window_start = 0, | |
822 | .window_len = 0x100, | |
823 | .range_min = 0 * 0x100, | |
824 | .range_max = 5 * 0x100, | |
825 | }, | |
826 | }; | |
827 | static const struct regmap_config regmap_config = { | |
828 | .reg_bits = 8, | |
829 | .val_bits = 8, | |
830 | .max_register = 5 * 0x100, | |
831 | .ranges = regmap_range_cfg, | |
832 | .num_ranges = ARRAY_SIZE(regmap_range_cfg), | |
833 | }; | |
28c08799 AP |
834 | |
835 | dev_dbg(&client->dev, "\n"); | |
836 | ||
837 | if (pdata == NULL) { | |
838 | ret = -EINVAL; | |
839 | goto err; | |
840 | } | |
841 | ||
842 | /* allocate memory for the internal state */ | |
f544f100 AP |
843 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
844 | if (dev == NULL) { | |
28c08799 AP |
845 | ret = -ENOMEM; |
846 | goto err; | |
847 | } | |
848 | ||
849 | /* setup the state */ | |
f544f100 | 850 | i2c_set_clientdata(client, dev); |
47b4dbff | 851 | dev->client = client; |
b8cb50d2 | 852 | dev->pdata = client->dev.platform_data; |
f544f100 | 853 | dev->sleeping = true; |
47b4dbff | 854 | INIT_DELAYED_WORK(&dev->stat_work, rtl2830_stat_work); |
15d37f38 AP |
855 | dev->regmap = regmap_init(&client->dev, ®map_bus, client, |
856 | ®map_config); | |
857 | if (IS_ERR(dev->regmap)) { | |
858 | ret = PTR_ERR(dev->regmap); | |
859 | goto err_kfree; | |
860 | } | |
28c08799 AP |
861 | |
862 | /* check if the demod is there */ | |
15d37f38 | 863 | ret = rtl2830_bulk_read(client, 0x000, &u8tmp, 1); |
28c08799 | 864 | if (ret) |
15d37f38 | 865 | goto err_regmap_exit; |
28c08799 AP |
866 | |
867 | /* create muxed i2c adapter for tuner */ | |
f544f100 | 868 | dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, |
15d37f38 | 869 | client, 0, 0, 0, rtl2830_select, NULL); |
f544f100 | 870 | if (dev->adapter == NULL) { |
28c08799 | 871 | ret = -ENODEV; |
15d37f38 | 872 | goto err_regmap_exit; |
28c08799 AP |
873 | } |
874 | ||
875 | /* create dvb frontend */ | |
f544f100 | 876 | memcpy(&dev->fe.ops, &rtl2830_ops, sizeof(dev->fe.ops)); |
1f153c4d | 877 | dev->fe.demodulator_priv = client; |
28c08799 AP |
878 | |
879 | /* setup callbacks */ | |
880 | pdata->get_dvb_frontend = rtl2830_get_dvb_frontend; | |
881 | pdata->get_i2c_adapter = rtl2830_get_i2c_adapter; | |
df70ddad AP |
882 | pdata->pid_filter = rtl2830_pid_filter; |
883 | pdata->pid_filter_ctrl = rtl2830_pid_filter_ctrl; | |
28c08799 AP |
884 | |
885 | dev_info(&client->dev, "Realtek RTL2830 successfully attached\n"); | |
28c08799 | 886 | |
947debb4 | 887 | return 0; |
15d37f38 AP |
888 | err_regmap_exit: |
889 | regmap_exit(dev->regmap); | |
28c08799 | 890 | err_kfree: |
f544f100 | 891 | kfree(dev); |
28c08799 AP |
892 | err: |
893 | dev_dbg(&client->dev, "failed=%d\n", ret); | |
894 | return ret; | |
895 | } | |
896 | ||
897 | static int rtl2830_remove(struct i2c_client *client) | |
898 | { | |
f544f100 | 899 | struct rtl2830_dev *dev = i2c_get_clientdata(client); |
28c08799 AP |
900 | |
901 | dev_dbg(&client->dev, "\n"); | |
902 | ||
f544f100 | 903 | i2c_del_mux_adapter(dev->adapter); |
15d37f38 | 904 | regmap_exit(dev->regmap); |
f544f100 | 905 | kfree(dev); |
947debb4 | 906 | |
28c08799 AP |
907 | return 0; |
908 | } | |
909 | ||
910 | static const struct i2c_device_id rtl2830_id_table[] = { | |
911 | {"rtl2830", 0}, | |
912 | {} | |
913 | }; | |
914 | MODULE_DEVICE_TABLE(i2c, rtl2830_id_table); | |
915 | ||
916 | static struct i2c_driver rtl2830_driver = { | |
917 | .driver = { | |
918 | .owner = THIS_MODULE, | |
919 | .name = "rtl2830", | |
920 | }, | |
921 | .probe = rtl2830_probe, | |
922 | .remove = rtl2830_remove, | |
923 | .id_table = rtl2830_id_table, | |
924 | }; | |
925 | ||
926 | module_i2c_driver(rtl2830_driver); | |
927 | ||
c0adca73 AP |
928 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
929 | MODULE_DESCRIPTION("Realtek RTL2830 DVB-T demodulator driver"); | |
930 | MODULE_LICENSE("GPL"); |