Commit | Line | Data |
---|---|---|
88b38bef | 1 | /* |
17027b96 | 2 | * ITE IT913X silicon tuner driver |
88b38bef AP |
3 | * |
4 | * Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com) | |
5 | * IT9137 Copyright (C) ITE Tech Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.= | |
21 | */ | |
22 | ||
3d2f18d3 AP |
23 | #include "it913x.h" |
24 | #include <linux/regmap.h> | |
88b38bef | 25 | |
a71b65e8 | 26 | struct it913x_dev { |
3b2a5e8c | 27 | struct i2c_client *client; |
d2dbc00c | 28 | struct regmap *regmap; |
3b2a5e8c | 29 | struct dvb_frontend *fe; |
676c350f AP |
30 | u8 chip_ver:2; |
31 | u8 role:2; | |
17027b96 AP |
32 | u16 xtal; |
33 | u8 fdiv; | |
34 | u8 clk_mode; | |
35 | u32 fn_min; | |
36 | bool active; | |
88b38bef AP |
37 | }; |
38 | ||
42432b3c | 39 | static int it913x_init(struct dvb_frontend *fe) |
88b38bef | 40 | { |
a71b65e8 | 41 | struct it913x_dev *dev = fe->tuner_priv; |
5190ff3e | 42 | int ret; |
17027b96 AP |
43 | unsigned int utmp; |
44 | u8 iqik_m_cal, nv_val, buf[2]; | |
45 | static const u8 nv[] = {48, 32, 24, 16, 12, 8, 6, 4, 2}; | |
5190ff3e | 46 | unsigned long timeout; |
88b38bef | 47 | |
17027b96 AP |
48 | dev_dbg(&dev->client->dev, "role %u\n", dev->role); |
49 | ||
50 | ret = regmap_write(dev->regmap, 0x80ec4c, 0x68); | |
51 | if (ret) | |
52 | goto err; | |
53 | ||
54 | usleep_range(10000, 100000); | |
55 | ||
56 | ret = regmap_read(dev->regmap, 0x80ec86, &utmp); | |
57 | if (ret) | |
58 | goto err; | |
59 | ||
60 | switch (utmp) { | |
88b38bef | 61 | case 0: |
17027b96 AP |
62 | /* 12.000 MHz */ |
63 | dev->clk_mode = utmp; | |
64 | dev->xtal = 2000; | |
65 | dev->fdiv = 3; | |
66 | iqik_m_cal = 16; | |
88b38bef | 67 | break; |
88b38bef | 68 | case 1: |
17027b96 AP |
69 | /* 20.480 MHz */ |
70 | dev->clk_mode = utmp; | |
71 | dev->xtal = 640; | |
72 | dev->fdiv = 1; | |
73 | iqik_m_cal = 6; | |
88b38bef | 74 | break; |
17027b96 AP |
75 | default: |
76 | dev_err(&dev->client->dev, "unknown clock identifier %d\n", utmp); | |
77 | goto err; | |
88b38bef AP |
78 | } |
79 | ||
17027b96 AP |
80 | ret = regmap_read(dev->regmap, 0x80ed03, &utmp); |
81 | if (ret) | |
82 | goto err; | |
88b38bef | 83 | |
17027b96 AP |
84 | else if (utmp < ARRAY_SIZE(nv)) |
85 | nv_val = nv[utmp]; | |
88b38bef AP |
86 | else |
87 | nv_val = 2; | |
88 | ||
5190ff3e AP |
89 | #define TIMEOUT 50 |
90 | timeout = jiffies + msecs_to_jiffies(TIMEOUT); | |
91 | while (!time_after(jiffies, timeout)) { | |
17027b96 | 92 | ret = regmap_bulk_read(dev->regmap, 0x80ed23, buf, 2); |
d2dbc00c | 93 | if (ret) |
17027b96 AP |
94 | goto err; |
95 | ||
96 | utmp = (buf[1] << 8) | (buf[0] << 0); | |
97 | if (utmp) | |
98 | break; | |
88b38bef | 99 | } |
88b38bef | 100 | |
5190ff3e AP |
101 | dev_dbg(&dev->client->dev, "r_fbc_m_bdry took %u ms, val %u\n", |
102 | jiffies_to_msecs(jiffies) - | |
103 | (jiffies_to_msecs(timeout) - TIMEOUT), utmp); | |
17027b96 AP |
104 | |
105 | dev->fn_min = dev->xtal * utmp; | |
106 | dev->fn_min /= (dev->fdiv * nv_val); | |
107 | dev->fn_min *= 1000; | |
108 | dev_dbg(&dev->client->dev, "fn_min %u\n", dev->fn_min); | |
109 | ||
5190ff3e AP |
110 | /* |
111 | * Chip version BX never sets that flag so we just wait 50ms in that | |
112 | * case. It is possible poll BX similarly than AX and then timeout in | |
113 | * order to get 50ms delay, but that causes about 120 extra I2C | |
114 | * messages. As for now, we just wait and reduce IO. | |
115 | */ | |
17027b96 | 116 | if (dev->chip_ver == 1) { |
5190ff3e AP |
117 | #define TIMEOUT 50 |
118 | timeout = jiffies + msecs_to_jiffies(TIMEOUT); | |
119 | while (!time_after(jiffies, timeout)) { | |
17027b96 AP |
120 | ret = regmap_read(dev->regmap, 0x80ec82, &utmp); |
121 | if (ret) | |
122 | goto err; | |
123 | ||
124 | if (utmp) | |
88b38bef | 125 | break; |
88b38bef | 126 | } |
17027b96 | 127 | |
5190ff3e AP |
128 | dev_dbg(&dev->client->dev, "p_tsm_init_mode took %u ms, val %u\n", |
129 | jiffies_to_msecs(jiffies) - | |
130 | (jiffies_to_msecs(timeout) - TIMEOUT), utmp); | |
17027b96 AP |
131 | } else { |
132 | msleep(50); | |
88b38bef AP |
133 | } |
134 | ||
17027b96 AP |
135 | ret = regmap_write(dev->regmap, 0x80ed81, iqik_m_cal); |
136 | if (ret) | |
137 | goto err; | |
138 | ||
139 | ret = regmap_write(dev->regmap, 0x80ec57, 0x00); | |
140 | if (ret) | |
141 | goto err; | |
142 | ||
143 | ret = regmap_write(dev->regmap, 0x80ec58, 0x00); | |
144 | if (ret) | |
145 | goto err; | |
146 | ||
147 | ret = regmap_write(dev->regmap, 0x80ec40, 0x01); | |
148 | if (ret) | |
149 | goto err; | |
150 | ||
151 | dev->active = true; | |
d19812eb | 152 | |
17027b96 AP |
153 | return 0; |
154 | err: | |
155 | dev_dbg(&dev->client->dev, "failed %d\n", ret); | |
156 | return ret; | |
88b38bef AP |
157 | } |
158 | ||
676c350f AP |
159 | static int it913x_sleep(struct dvb_frontend *fe) |
160 | { | |
161 | struct it913x_dev *dev = fe->tuner_priv; | |
162 | int ret, len; | |
163 | ||
17027b96 AP |
164 | dev_dbg(&dev->client->dev, "role %u\n", dev->role); |
165 | ||
166 | dev->active = false; | |
676c350f AP |
167 | |
168 | ret = regmap_bulk_write(dev->regmap, 0x80ec40, "\x00", 1); | |
169 | if (ret) | |
170 | goto err; | |
171 | ||
172 | /* | |
173 | * Writing '0x00' to master tuner register '0x80ec08' causes slave tuner | |
174 | * communication lost. Due to that, we cannot put master full sleep. | |
175 | */ | |
176 | if (dev->role == IT913X_ROLE_DUAL_MASTER) | |
177 | len = 4; | |
178 | else | |
179 | len = 15; | |
180 | ||
17027b96 | 181 | dev_dbg(&dev->client->dev, "role %u, len %d\n", dev->role, len); |
676c350f AP |
182 | |
183 | ret = regmap_bulk_write(dev->regmap, 0x80ec02, | |
184 | "\x3f\x1f\x3f\x3e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", | |
185 | len); | |
186 | if (ret) | |
187 | goto err; | |
188 | ||
189 | ret = regmap_bulk_write(dev->regmap, 0x80ec12, "\x00\x00\x00\x00", 4); | |
190 | if (ret) | |
191 | goto err; | |
192 | ||
193 | ret = regmap_bulk_write(dev->regmap, 0x80ec17, | |
194 | "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9); | |
195 | if (ret) | |
196 | goto err; | |
197 | ||
198 | ret = regmap_bulk_write(dev->regmap, 0x80ec22, | |
199 | "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 10); | |
200 | if (ret) | |
201 | goto err; | |
202 | ||
203 | ret = regmap_bulk_write(dev->regmap, 0x80ec20, "\x00", 1); | |
204 | if (ret) | |
205 | goto err; | |
206 | ||
207 | ret = regmap_bulk_write(dev->regmap, 0x80ec3f, "\x01", 1); | |
208 | if (ret) | |
209 | goto err; | |
210 | ||
211 | return 0; | |
212 | err: | |
213 | dev_dbg(&dev->client->dev, "failed %d\n", ret); | |
214 | return ret; | |
215 | } | |
216 | ||
17027b96 | 217 | static int it913x_set_params(struct dvb_frontend *fe) |
88b38bef | 218 | { |
a71b65e8 | 219 | struct it913x_dev *dev = fe->tuner_priv; |
17027b96 | 220 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
8da55c94 | 221 | int ret; |
17027b96 AP |
222 | unsigned int utmp; |
223 | u32 pre_lo_freq, t_cal_freq; | |
224 | u16 iqik_m_cal, n_div; | |
225 | u8 u8tmp, n, l_band, lna_band; | |
3d2f18d3 | 226 | |
17027b96 AP |
227 | dev_dbg(&dev->client->dev, "role=%u, frequency %u, bandwidth_hz %u\n", |
228 | dev->role, c->frequency, c->bandwidth_hz); | |
3d2f18d3 | 229 | |
17027b96 AP |
230 | if (!dev->active) { |
231 | ret = -EINVAL; | |
3d2f18d3 | 232 | goto err; |
17027b96 | 233 | } |
88b38bef | 234 | |
17027b96 | 235 | if (c->frequency <= 74000000) { |
88b38bef AP |
236 | n_div = 48; |
237 | n = 0; | |
17027b96 | 238 | } else if (c->frequency <= 111000000) { |
88b38bef AP |
239 | n_div = 32; |
240 | n = 1; | |
17027b96 | 241 | } else if (c->frequency <= 148000000) { |
88b38bef AP |
242 | n_div = 24; |
243 | n = 2; | |
17027b96 | 244 | } else if (c->frequency <= 222000000) { |
88b38bef AP |
245 | n_div = 16; |
246 | n = 3; | |
17027b96 | 247 | } else if (c->frequency <= 296000000) { |
88b38bef AP |
248 | n_div = 12; |
249 | n = 4; | |
17027b96 | 250 | } else if (c->frequency <= 445000000) { |
88b38bef AP |
251 | n_div = 8; |
252 | n = 5; | |
17027b96 | 253 | } else if (c->frequency <= dev->fn_min) { |
88b38bef AP |
254 | n_div = 6; |
255 | n = 6; | |
17027b96 | 256 | } else if (c->frequency <= 950000000) { |
88b38bef AP |
257 | n_div = 4; |
258 | n = 7; | |
17027b96 | 259 | } else { |
88b38bef AP |
260 | n_div = 2; |
261 | n = 0; | |
17027b96 AP |
262 | } |
263 | ||
264 | ret = regmap_read(dev->regmap, 0x80ed81, &utmp); | |
265 | if (ret) | |
266 | goto err; | |
88b38bef | 267 | |
17027b96 | 268 | iqik_m_cal = utmp * n_div; |
88b38bef | 269 | |
17027b96 AP |
270 | if (utmp < 0x20) { |
271 | if (dev->clk_mode == 0) | |
88b38bef AP |
272 | iqik_m_cal = (iqik_m_cal * 9) >> 5; |
273 | else | |
274 | iqik_m_cal >>= 1; | |
275 | } else { | |
276 | iqik_m_cal = 0x40 - iqik_m_cal; | |
17027b96 | 277 | if (dev->clk_mode == 0) |
88b38bef AP |
278 | iqik_m_cal = ~((iqik_m_cal * 9) >> 5); |
279 | else | |
280 | iqik_m_cal = ~(iqik_m_cal >> 1); | |
281 | } | |
282 | ||
17027b96 AP |
283 | t_cal_freq = (c->frequency / 1000) * n_div * dev->fdiv; |
284 | pre_lo_freq = t_cal_freq / dev->xtal; | |
285 | utmp = pre_lo_freq * dev->xtal; | |
88b38bef | 286 | |
17027b96 AP |
287 | if ((t_cal_freq - utmp) >= (dev->xtal >> 1)) |
288 | pre_lo_freq++; | |
88b38bef | 289 | |
17027b96 | 290 | pre_lo_freq += (u32) n << 13; |
88b38bef | 291 | /* Frequency OMEGA_IQIK_M_CAL_MID*/ |
17027b96 AP |
292 | t_cal_freq = pre_lo_freq + (u32)iqik_m_cal; |
293 | dev_dbg(&dev->client->dev, "t_cal_freq %u, pre_lo_freq %u\n", | |
294 | t_cal_freq, pre_lo_freq); | |
88b38bef | 295 | |
17027b96 AP |
296 | if (c->frequency <= 440000000) { |
297 | l_band = 0; | |
298 | lna_band = 0; | |
299 | } else if (c->frequency <= 484000000) { | |
300 | l_band = 1; | |
301 | lna_band = 1; | |
302 | } else if (c->frequency <= 533000000) { | |
303 | l_band = 1; | |
304 | lna_band = 2; | |
305 | } else if (c->frequency <= 587000000) { | |
306 | l_band = 1; | |
307 | lna_band = 3; | |
308 | } else if (c->frequency <= 645000000) { | |
309 | l_band = 1; | |
310 | lna_band = 4; | |
311 | } else if (c->frequency <= 710000000) { | |
312 | l_band = 1; | |
313 | lna_band = 5; | |
314 | } else if (c->frequency <= 782000000) { | |
315 | l_band = 1; | |
316 | lna_band = 6; | |
317 | } else if (c->frequency <= 860000000) { | |
318 | l_band = 1; | |
319 | lna_band = 7; | |
320 | } else if (c->frequency <= 1492000000) { | |
321 | l_band = 1; | |
322 | lna_band = 0; | |
323 | } else if (c->frequency <= 1685000000) { | |
324 | l_band = 1; | |
325 | lna_band = 1; | |
326 | } else { | |
327 | ret = -EINVAL; | |
328 | goto err; | |
329 | } | |
330 | ||
331 | /* XXX: latest windows driver does not set that at all */ | |
332 | ret = regmap_write(dev->regmap, 0x80ee06, lna_band); | |
3d2f18d3 AP |
333 | if (ret) |
334 | goto err; | |
335 | ||
17027b96 AP |
336 | if (c->bandwidth_hz <= 5000000) |
337 | u8tmp = 0; | |
338 | else if (c->bandwidth_hz <= 6000000) | |
339 | u8tmp = 2; | |
340 | else if (c->bandwidth_hz <= 7000000) | |
341 | u8tmp = 4; | |
342 | else | |
343 | u8tmp = 6; /* 8000000 */ | |
344 | ||
345 | ret = regmap_write(dev->regmap, 0x80ec56, u8tmp); | |
346 | if (ret) | |
347 | goto err; | |
348 | ||
349 | /* XXX: latest windows driver sets different value (a8 != 68) */ | |
350 | ret = regmap_write(dev->regmap, 0x80ec4c, 0xa0 | (l_band << 3)); | |
3d2f18d3 AP |
351 | if (ret) |
352 | goto err; | |
88b38bef | 353 | |
17027b96 AP |
354 | ret = regmap_write(dev->regmap, 0x80ec4d, (t_cal_freq >> 0) & 0xff); |
355 | if (ret) | |
356 | goto err; | |
88b38bef | 357 | |
17027b96 | 358 | ret = regmap_write(dev->regmap, 0x80ec4e, (t_cal_freq >> 8) & 0xff); |
3d2f18d3 AP |
359 | if (ret) |
360 | goto err; | |
88b38bef | 361 | |
17027b96 AP |
362 | ret = regmap_write(dev->regmap, 0x80011e, (pre_lo_freq >> 0) & 0xff); |
363 | if (ret) | |
364 | goto err; | |
365 | ||
366 | ret = regmap_write(dev->regmap, 0x80011f, (pre_lo_freq >> 8) & 0xff); | |
3d2f18d3 AP |
367 | if (ret) |
368 | goto err; | |
88b38bef | 369 | |
3d2f18d3 AP |
370 | return 0; |
371 | err: | |
372 | dev_dbg(&dev->client->dev, "failed %d\n", ret); | |
373 | return ret; | |
88b38bef AP |
374 | } |
375 | ||
88b38bef AP |
376 | static const struct dvb_tuner_ops it913x_tuner_ops = { |
377 | .info = { | |
17027b96 | 378 | .name = "ITE IT913X", |
88b38bef AP |
379 | .frequency_min = 174000000, |
380 | .frequency_max = 862000000, | |
381 | }, | |
382 | ||
42432b3c AP |
383 | .init = it913x_init, |
384 | .sleep = it913x_sleep, | |
17027b96 | 385 | .set_params = it913x_set_params, |
88b38bef AP |
386 | }; |
387 | ||
3b2a5e8c AP |
388 | static int it913x_probe(struct i2c_client *client, |
389 | const struct i2c_device_id *id) | |
88b38bef | 390 | { |
3b2a5e8c AP |
391 | struct it913x_config *cfg = client->dev.platform_data; |
392 | struct dvb_frontend *fe = cfg->fe; | |
a71b65e8 | 393 | struct it913x_dev *dev; |
01b461bb | 394 | int ret; |
3b2a5e8c | 395 | char *chip_ver_str; |
d2dbc00c AP |
396 | static const struct regmap_config regmap_config = { |
397 | .reg_bits = 24, | |
398 | .val_bits = 8, | |
399 | }; | |
88b38bef | 400 | |
a71b65e8 AP |
401 | dev = kzalloc(sizeof(struct it913x_dev), GFP_KERNEL); |
402 | if (dev == NULL) { | |
3b2a5e8c AP |
403 | ret = -ENOMEM; |
404 | dev_err(&client->dev, "kzalloc() failed\n"); | |
405 | goto err; | |
88b38bef AP |
406 | } |
407 | ||
a71b65e8 AP |
408 | dev->client = client; |
409 | dev->fe = cfg->fe; | |
410 | dev->chip_ver = cfg->chip_ver; | |
676c350f | 411 | dev->role = cfg->role; |
d2dbc00c AP |
412 | dev->regmap = regmap_init_i2c(client, ®map_config); |
413 | if (IS_ERR(dev->regmap)) { | |
414 | ret = PTR_ERR(dev->regmap); | |
415 | goto err_kfree; | |
416 | } | |
44af747f | 417 | |
a71b65e8 | 418 | fe->tuner_priv = dev; |
88b38bef AP |
419 | memcpy(&fe->ops.tuner_ops, &it913x_tuner_ops, |
420 | sizeof(struct dvb_tuner_ops)); | |
a71b65e8 | 421 | i2c_set_clientdata(client, dev); |
3b2a5e8c | 422 | |
a71b65e8 | 423 | if (dev->chip_ver == 1) |
3b2a5e8c | 424 | chip_ver_str = "AX"; |
a71b65e8 | 425 | else if (dev->chip_ver == 2) |
3b2a5e8c AP |
426 | chip_ver_str = "BX"; |
427 | else | |
428 | chip_ver_str = "??"; | |
429 | ||
a71b65e8 | 430 | dev_info(&dev->client->dev, "ITE IT913X %s successfully attached\n", |
3b2a5e8c | 431 | chip_ver_str); |
17027b96 AP |
432 | dev_dbg(&dev->client->dev, "chip_ver %u, role %u\n", |
433 | dev->chip_ver, dev->role); | |
3b2a5e8c | 434 | return 0; |
d2dbc00c | 435 | |
d2dbc00c AP |
436 | err_kfree: |
437 | kfree(dev); | |
3b2a5e8c AP |
438 | err: |
439 | dev_dbg(&client->dev, "failed %d\n", ret); | |
3b2a5e8c AP |
440 | return ret; |
441 | } | |
88b38bef | 442 | |
3b2a5e8c AP |
443 | static int it913x_remove(struct i2c_client *client) |
444 | { | |
a71b65e8 AP |
445 | struct it913x_dev *dev = i2c_get_clientdata(client); |
446 | struct dvb_frontend *fe = dev->fe; | |
3b2a5e8c AP |
447 | |
448 | dev_dbg(&client->dev, "\n"); | |
449 | ||
450 | memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); | |
451 | fe->tuner_priv = NULL; | |
d2dbc00c | 452 | regmap_exit(dev->regmap); |
a71b65e8 | 453 | kfree(dev); |
3b2a5e8c AP |
454 | |
455 | return 0; | |
88b38bef | 456 | } |
3b2a5e8c AP |
457 | |
458 | static const struct i2c_device_id it913x_id_table[] = { | |
459 | {"it913x", 0}, | |
460 | {} | |
461 | }; | |
462 | MODULE_DEVICE_TABLE(i2c, it913x_id_table); | |
463 | ||
464 | static struct i2c_driver it913x_driver = { | |
465 | .driver = { | |
3b2a5e8c AP |
466 | .name = "it913x", |
467 | }, | |
468 | .probe = it913x_probe, | |
469 | .remove = it913x_remove, | |
470 | .id_table = it913x_id_table, | |
471 | }; | |
472 | ||
473 | module_i2c_driver(it913x_driver); | |
88b38bef | 474 | |
17027b96 | 475 | MODULE_DESCRIPTION("ITE IT913X silicon tuner driver"); |
88b38bef AP |
476 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
477 | MODULE_LICENSE("GPL"); |