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3dbbf82f MP |
1 | /* |
2 | * Driver for it913x-fe Frontend | |
3 | * | |
4 | * with support for on chip it9137 integral tuner | |
5 | * | |
6 | * Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com) | |
7 | * IT9137 Copyright (C) ITE Tech Inc. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.= | |
23 | */ | |
24 | ||
25 | #include <linux/module.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/types.h> | |
29 | ||
30 | #include "dvb_frontend.h" | |
31 | #include "it913x-fe.h" | |
32 | #include "it913x-fe-priv.h" | |
33 | ||
34 | static int it913x_debug; | |
35 | ||
36 | module_param_named(debug, it913x_debug, int, 0644); | |
37 | MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))."); | |
38 | ||
39 | #define dprintk(level, args...) do { \ | |
40 | if (level & it913x_debug) \ | |
41 | printk(KERN_DEBUG "it913x-fe: " args); \ | |
42 | } while (0) | |
43 | ||
44 | #define deb_info(args...) dprintk(0x01, args) | |
45 | #define debug_data_snipet(level, name, p) \ | |
46 | dprintk(level, name" (%02x%02x%02x%02x%02x%02x%02x%02x)", \ | |
47 | *p, *(p+1), *(p+2), *(p+3), *(p+4), \ | |
48 | *(p+5), *(p+6), *(p+7)); | |
ed942c50 MP |
49 | #define info(format, arg...) \ |
50 | printk(KERN_INFO "it913x-fe: " format "\n" , ## arg) | |
3dbbf82f MP |
51 | |
52 | struct it913x_fe_state { | |
53 | struct dvb_frontend frontend; | |
54 | struct i2c_adapter *i2c_adap; | |
b7d425d3 | 55 | struct ite_config *config; |
3dbbf82f MP |
56 | u8 i2c_addr; |
57 | u32 frequency; | |
3339a5b1 MP |
58 | fe_modulation_t constellation; |
59 | fe_transmit_mode_t transmission_mode; | |
3dbbf82f MP |
60 | u32 crystalFrequency; |
61 | u32 adcFrequency; | |
62 | u8 tuner_type; | |
63 | struct adctable *table; | |
64 | fe_status_t it913x_status; | |
7c2808e2 | 65 | u16 tun_xtal; |
66 | u8 tun_fdiv; | |
67 | u8 tun_clk_mode; | |
68 | u32 tun_fn_min; | |
82a05014 | 69 | u32 ucblocks; |
3dbbf82f MP |
70 | }; |
71 | ||
72 | static int it913x_read_reg(struct it913x_fe_state *state, | |
73 | u32 reg, u8 *data, u8 count) | |
74 | { | |
75 | int ret; | |
76 | u8 pro = PRO_DMOD; /* All reads from demodulator */ | |
77 | u8 b[4]; | |
78 | struct i2c_msg msg[2] = { | |
79 | { .addr = state->i2c_addr + (pro << 1), .flags = 0, | |
80 | .buf = b, .len = sizeof(b) }, | |
81 | { .addr = state->i2c_addr + (pro << 1), .flags = I2C_M_RD, | |
82 | .buf = data, .len = count } | |
83 | }; | |
84 | b[0] = (u8) reg >> 24; | |
85 | b[1] = (u8)(reg >> 16) & 0xff; | |
86 | b[2] = (u8)(reg >> 8) & 0xff; | |
87 | b[3] = (u8) reg & 0xff; | |
88 | ||
89 | ret = i2c_transfer(state->i2c_adap, msg, 2); | |
90 | ||
91 | return ret; | |
92 | } | |
93 | ||
94 | static int it913x_read_reg_u8(struct it913x_fe_state *state, u32 reg) | |
95 | { | |
96 | int ret; | |
97 | u8 b[1]; | |
98 | ret = it913x_read_reg(state, reg, &b[0], sizeof(b)); | |
99 | return (ret < 0) ? -ENODEV : b[0]; | |
100 | } | |
101 | ||
102 | static int it913x_write(struct it913x_fe_state *state, | |
103 | u8 pro, u32 reg, u8 buf[], u8 count) | |
104 | { | |
105 | u8 b[256]; | |
106 | struct i2c_msg msg[1] = { | |
107 | { .addr = state->i2c_addr + (pro << 1), .flags = 0, | |
108 | .buf = b, .len = count + 4 } | |
109 | }; | |
110 | int ret; | |
111 | ||
112 | b[0] = (u8) reg >> 24; | |
113 | b[1] = (u8)(reg >> 16) & 0xff; | |
114 | b[2] = (u8)(reg >> 8) & 0xff; | |
115 | b[3] = (u8) reg & 0xff; | |
116 | memcpy(&b[4], buf, count); | |
117 | ||
118 | ret = i2c_transfer(state->i2c_adap, msg, 1); | |
119 | ||
120 | if (ret < 0) | |
121 | return -EIO; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | static int it913x_write_reg(struct it913x_fe_state *state, | |
127 | u8 pro, u32 reg, u32 data) | |
128 | { | |
129 | int ret; | |
130 | u8 b[4]; | |
131 | u8 s; | |
132 | ||
133 | b[0] = data >> 24; | |
134 | b[1] = (data >> 16) & 0xff; | |
135 | b[2] = (data >> 8) & 0xff; | |
136 | b[3] = data & 0xff; | |
137 | /* expand write as needed */ | |
138 | if (data < 0x100) | |
139 | s = 3; | |
140 | else if (data < 0x1000) | |
141 | s = 2; | |
142 | else if (data < 0x100000) | |
143 | s = 1; | |
144 | else | |
145 | s = 0; | |
146 | ||
147 | ret = it913x_write(state, pro, reg, &b[s], sizeof(b) - s); | |
148 | ||
149 | return ret; | |
150 | } | |
151 | ||
152 | static int it913x_fe_script_loader(struct it913x_fe_state *state, | |
153 | struct it913xset *loadscript) | |
154 | { | |
155 | int ret, i; | |
156 | if (loadscript == NULL) | |
157 | return -EINVAL; | |
158 | ||
159 | for (i = 0; i < 1000; ++i) { | |
160 | if (loadscript[i].pro == 0xff) | |
161 | break; | |
162 | ret = it913x_write(state, loadscript[i].pro, | |
163 | loadscript[i].address, | |
164 | loadscript[i].reg, loadscript[i].count); | |
165 | if (ret < 0) | |
166 | return -ENODEV; | |
167 | } | |
168 | return 0; | |
169 | } | |
170 | ||
7c2808e2 | 171 | static int it913x_init_tuner(struct it913x_fe_state *state) |
172 | { | |
173 | int ret, i, reg; | |
174 | u8 val, nv_val; | |
175 | u8 nv[] = {48, 32, 24, 16, 12, 8, 6, 4, 2}; | |
176 | u8 b[2]; | |
177 | ||
178 | reg = it913x_read_reg_u8(state, 0xec86); | |
179 | switch (reg) { | |
180 | case 0: | |
181 | state->tun_clk_mode = reg; | |
182 | state->tun_xtal = 2000; | |
183 | state->tun_fdiv = 3; | |
184 | val = 16; | |
185 | break; | |
186 | case -ENODEV: | |
187 | return -ENODEV; | |
188 | case 1: | |
189 | default: | |
190 | state->tun_clk_mode = reg; | |
191 | state->tun_xtal = 640; | |
192 | state->tun_fdiv = 1; | |
193 | val = 6; | |
194 | break; | |
195 | } | |
196 | ||
197 | reg = it913x_read_reg_u8(state, 0xed03); | |
198 | ||
199 | if (reg < 0) | |
200 | return -ENODEV; | |
201 | else if (reg < sizeof(nv)) | |
202 | nv_val = nv[reg]; | |
203 | else | |
204 | nv_val = 2; | |
205 | ||
206 | for (i = 0; i < 50; i++) { | |
207 | ret = it913x_read_reg(state, 0xed23, &b[0], sizeof(b)); | |
208 | reg = (b[1] << 8) + b[0]; | |
209 | if (reg > 0) | |
210 | break; | |
211 | if (ret < 0) | |
212 | return -ENODEV; | |
213 | udelay(2000); | |
214 | } | |
215 | state->tun_fn_min = state->tun_xtal * reg; | |
216 | state->tun_fn_min /= (state->tun_fdiv * nv_val); | |
217 | deb_info("Tuner fn_min %d", state->tun_fn_min); | |
218 | ||
b7d425d3 MP |
219 | if (state->config->chip_ver > 1) |
220 | msleep(50); | |
221 | else { | |
222 | for (i = 0; i < 50; i++) { | |
223 | reg = it913x_read_reg_u8(state, 0xec82); | |
224 | if (reg > 0) | |
225 | break; | |
226 | if (reg < 0) | |
227 | return -ENODEV; | |
228 | udelay(2000); | |
229 | } | |
7c2808e2 | 230 | } |
231 | ||
232 | return it913x_write_reg(state, PRO_DMOD, 0xed81, val); | |
233 | } | |
234 | ||
3dbbf82f | 235 | static int it9137_set_tuner(struct it913x_fe_state *state, |
f908cf1d | 236 | u32 bandwidth, u32 frequency_m) |
3dbbf82f MP |
237 | { |
238 | struct it913xset *set_tuner = set_it9137_template; | |
7c2808e2 | 239 | int ret, reg; |
3dbbf82f | 240 | u32 frequency = frequency_m / 1000; |
7c2808e2 | 241 | u32 freq, temp_f, tmp; |
242 | u16 iqik_m_cal; | |
3dbbf82f MP |
243 | u16 n_div; |
244 | u8 n; | |
245 | u8 l_band; | |
246 | u8 lna_band; | |
247 | u8 bw; | |
248 | ||
990f49af MP |
249 | if (state->config->firmware_ver == 1) |
250 | set_tuner = set_it9135_template; | |
251 | else | |
252 | set_tuner = set_it9137_template; | |
253 | ||
3dbbf82f MP |
254 | deb_info("Tuner Frequency %d Bandwidth %d", frequency, bandwidth); |
255 | ||
256 | if (frequency >= 51000 && frequency <= 440000) { | |
257 | l_band = 0; | |
258 | lna_band = 0; | |
259 | } else if (frequency > 440000 && frequency <= 484000) { | |
260 | l_band = 1; | |
261 | lna_band = 1; | |
262 | } else if (frequency > 484000 && frequency <= 533000) { | |
263 | l_band = 1; | |
264 | lna_band = 2; | |
265 | } else if (frequency > 533000 && frequency <= 587000) { | |
266 | l_band = 1; | |
267 | lna_band = 3; | |
268 | } else if (frequency > 587000 && frequency <= 645000) { | |
269 | l_band = 1; | |
270 | lna_band = 4; | |
271 | } else if (frequency > 645000 && frequency <= 710000) { | |
272 | l_band = 1; | |
273 | lna_band = 5; | |
274 | } else if (frequency > 710000 && frequency <= 782000) { | |
275 | l_band = 1; | |
276 | lna_band = 6; | |
277 | } else if (frequency > 782000 && frequency <= 860000) { | |
278 | l_band = 1; | |
279 | lna_band = 7; | |
280 | } else if (frequency > 1450000 && frequency <= 1492000) { | |
281 | l_band = 1; | |
282 | lna_band = 0; | |
283 | } else if (frequency > 1660000 && frequency <= 1685000) { | |
284 | l_band = 1; | |
285 | lna_band = 1; | |
286 | } else | |
287 | return -EINVAL; | |
288 | set_tuner[0].reg[0] = lna_band; | |
289 | ||
f908cf1d MCC |
290 | switch (bandwidth) { |
291 | case 5000000: | |
3dbbf82f | 292 | bw = 0; |
f908cf1d MCC |
293 | break; |
294 | case 6000000: | |
3dbbf82f | 295 | bw = 2; |
f908cf1d MCC |
296 | break; |
297 | case 7000000: | |
3dbbf82f | 298 | bw = 4; |
f908cf1d MCC |
299 | break; |
300 | default: | |
301 | case 8000000: | |
3dbbf82f | 302 | bw = 6; |
f908cf1d MCC |
303 | break; |
304 | } | |
7c2808e2 | 305 | |
3dbbf82f MP |
306 | set_tuner[1].reg[0] = bw; |
307 | set_tuner[2].reg[0] = 0xa0 | (l_band << 3); | |
308 | ||
7c2808e2 | 309 | if (frequency > 53000 && frequency <= 74000) { |
3dbbf82f MP |
310 | n_div = 48; |
311 | n = 0; | |
312 | } else if (frequency > 74000 && frequency <= 111000) { | |
313 | n_div = 32; | |
314 | n = 1; | |
315 | } else if (frequency > 111000 && frequency <= 148000) { | |
316 | n_div = 24; | |
317 | n = 2; | |
318 | } else if (frequency > 148000 && frequency <= 222000) { | |
319 | n_div = 16; | |
320 | n = 3; | |
321 | } else if (frequency > 222000 && frequency <= 296000) { | |
322 | n_div = 12; | |
323 | n = 4; | |
324 | } else if (frequency > 296000 && frequency <= 445000) { | |
325 | n_div = 8; | |
326 | n = 5; | |
7c2808e2 | 327 | } else if (frequency > 445000 && frequency <= state->tun_fn_min) { |
3dbbf82f MP |
328 | n_div = 6; |
329 | n = 6; | |
7c2808e2 | 330 | } else if (frequency > state->tun_fn_min && frequency <= 950000) { |
3dbbf82f MP |
331 | n_div = 4; |
332 | n = 7; | |
333 | } else if (frequency > 1450000 && frequency <= 1680000) { | |
334 | n_div = 2; | |
335 | n = 0; | |
336 | } else | |
337 | return -EINVAL; | |
338 | ||
7c2808e2 | 339 | reg = it913x_read_reg_u8(state, 0xed81); |
340 | iqik_m_cal = (u16)reg * n_div; | |
3dbbf82f | 341 | |
7c2808e2 | 342 | if (reg < 0x20) { |
343 | if (state->tun_clk_mode == 0) | |
344 | iqik_m_cal = (iqik_m_cal * 9) >> 5; | |
345 | else | |
346 | iqik_m_cal >>= 1; | |
347 | } else { | |
348 | iqik_m_cal = 0x40 - iqik_m_cal; | |
349 | if (state->tun_clk_mode == 0) | |
350 | iqik_m_cal = ~((iqik_m_cal * 9) >> 5); | |
351 | else | |
352 | iqik_m_cal = ~(iqik_m_cal >> 1); | |
353 | } | |
354 | ||
355 | temp_f = frequency * (u32)n_div * (u32)state->tun_fdiv; | |
356 | freq = temp_f / state->tun_xtal; | |
357 | tmp = freq * state->tun_xtal; | |
358 | ||
359 | if ((temp_f - tmp) >= (state->tun_xtal >> 1)) | |
360 | freq++; | |
3dbbf82f | 361 | |
3dbbf82f | 362 | freq += (u32) n << 13; |
7c2808e2 | 363 | /* Frequency OMEGA_IQIK_M_CAL_MID*/ |
364 | temp_f = freq + (u32)iqik_m_cal; | |
3dbbf82f | 365 | |
7c2808e2 | 366 | set_tuner[3].reg[0] = temp_f & 0xff; |
367 | set_tuner[4].reg[0] = (temp_f >> 8) & 0xff; | |
368 | ||
369 | deb_info("High Frequency = %04x", temp_f); | |
370 | ||
371 | /* Lower frequency */ | |
372 | set_tuner[5].reg[0] = freq & 0xff; | |
373 | set_tuner[6].reg[0] = (freq >> 8) & 0xff; | |
374 | ||
375 | deb_info("low Frequency = %04x", freq); | |
3dbbf82f MP |
376 | |
377 | ret = it913x_fe_script_loader(state, set_tuner); | |
378 | ||
379 | return (ret < 0) ? -ENODEV : 0; | |
3dbbf82f MP |
380 | } |
381 | ||
382 | static int it913x_fe_select_bw(struct it913x_fe_state *state, | |
f908cf1d | 383 | u32 bandwidth, u32 adcFrequency) |
3dbbf82f MP |
384 | { |
385 | int ret, i; | |
386 | u8 buffer[256]; | |
387 | u32 coeff[8]; | |
388 | u16 bfsfcw_fftinx_ratio; | |
389 | u16 fftinx_bfsfcw_ratio; | |
390 | u8 count; | |
391 | u8 bw; | |
392 | u8 adcmultiplier; | |
393 | ||
394 | deb_info("Bandwidth %d Adc %d", bandwidth, adcFrequency); | |
395 | ||
f908cf1d MCC |
396 | switch (bandwidth) { |
397 | case 5000000: | |
3dbbf82f | 398 | bw = 3; |
f908cf1d MCC |
399 | break; |
400 | case 6000000: | |
3dbbf82f | 401 | bw = 0; |
f908cf1d MCC |
402 | break; |
403 | case 7000000: | |
3dbbf82f | 404 | bw = 1; |
f908cf1d MCC |
405 | break; |
406 | default: | |
407 | case 8000000: | |
3dbbf82f | 408 | bw = 2; |
f908cf1d MCC |
409 | break; |
410 | } | |
3dbbf82f MP |
411 | ret = it913x_write_reg(state, PRO_DMOD, REG_BW, bw); |
412 | ||
413 | if (state->table == NULL) | |
414 | return -EINVAL; | |
415 | ||
416 | /* In write order */ | |
417 | coeff[0] = state->table[bw].coeff_1_2048; | |
418 | coeff[1] = state->table[bw].coeff_2_2k; | |
419 | coeff[2] = state->table[bw].coeff_1_8191; | |
420 | coeff[3] = state->table[bw].coeff_1_8192; | |
421 | coeff[4] = state->table[bw].coeff_1_8193; | |
422 | coeff[5] = state->table[bw].coeff_2_8k; | |
423 | coeff[6] = state->table[bw].coeff_1_4096; | |
424 | coeff[7] = state->table[bw].coeff_2_4k; | |
425 | bfsfcw_fftinx_ratio = state->table[bw].bfsfcw_fftinx_ratio; | |
426 | fftinx_bfsfcw_ratio = state->table[bw].fftinx_bfsfcw_ratio; | |
427 | ||
428 | /* ADC multiplier */ | |
429 | ret = it913x_read_reg_u8(state, ADC_X_2); | |
430 | if (ret < 0) | |
431 | return -EINVAL; | |
432 | ||
433 | adcmultiplier = ret; | |
434 | ||
435 | count = 0; | |
436 | ||
437 | /* Build Buffer for COEFF Registers */ | |
438 | for (i = 0; i < 8; i++) { | |
439 | if (adcmultiplier == 1) | |
440 | coeff[i] /= 2; | |
441 | buffer[count++] = (coeff[i] >> 24) & 0x3; | |
442 | buffer[count++] = (coeff[i] >> 16) & 0xff; | |
443 | buffer[count++] = (coeff[i] >> 8) & 0xff; | |
444 | buffer[count++] = coeff[i] & 0xff; | |
445 | } | |
446 | ||
447 | /* bfsfcw_fftinx_ratio register 0x21-0x22 */ | |
448 | buffer[count++] = bfsfcw_fftinx_ratio & 0xff; | |
449 | buffer[count++] = (bfsfcw_fftinx_ratio >> 8) & 0xff; | |
450 | /* fftinx_bfsfcw_ratio register 0x23-0x24 */ | |
451 | buffer[count++] = fftinx_bfsfcw_ratio & 0xff; | |
452 | buffer[count++] = (fftinx_bfsfcw_ratio >> 8) & 0xff; | |
453 | /* start at COEFF_1_2048 and write through to fftinx_bfsfcw_ratio*/ | |
454 | ret = it913x_write(state, PRO_DMOD, COEFF_1_2048, buffer, count); | |
455 | ||
456 | for (i = 0; i < 42; i += 8) | |
457 | debug_data_snipet(0x1, "Buffer", &buffer[i]); | |
458 | ||
459 | return ret; | |
460 | } | |
461 | ||
462 | ||
463 | ||
464 | static int it913x_fe_read_status(struct dvb_frontend *fe, fe_status_t *status) | |
465 | { | |
466 | struct it913x_fe_state *state = fe->demodulator_priv; | |
467 | int ret, i; | |
468 | fe_status_t old_status = state->it913x_status; | |
469 | *status = 0; | |
470 | ||
471 | if (state->it913x_status == 0) { | |
472 | ret = it913x_read_reg_u8(state, EMPTY_CHANNEL_STATUS); | |
473 | if (ret == 0x1) { | |
474 | *status |= FE_HAS_SIGNAL; | |
475 | for (i = 0; i < 40; i++) { | |
476 | ret = it913x_read_reg_u8(state, MP2IF_SYNC_LK); | |
477 | if (ret == 0x1) | |
478 | break; | |
479 | msleep(25); | |
480 | } | |
481 | if (ret == 0x1) | |
482 | *status |= FE_HAS_CARRIER | |
483 | | FE_HAS_VITERBI | |
484 | | FE_HAS_SYNC; | |
485 | state->it913x_status = *status; | |
486 | } | |
487 | } | |
488 | ||
489 | if (state->it913x_status & FE_HAS_SYNC) { | |
490 | ret = it913x_read_reg_u8(state, TPSD_LOCK); | |
491 | if (ret == 0x1) | |
492 | *status |= FE_HAS_LOCK | |
493 | | state->it913x_status; | |
494 | else | |
495 | state->it913x_status = 0; | |
496 | if (old_status != state->it913x_status) | |
497 | ret = it913x_write_reg(state, PRO_LINK, GPIOH3_O, ret); | |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static int it913x_fe_read_signal_strength(struct dvb_frontend *fe, | |
504 | u16 *strength) | |
505 | { | |
506 | struct it913x_fe_state *state = fe->demodulator_priv; | |
507 | int ret = it913x_read_reg_u8(state, SIGNAL_LEVEL); | |
508 | /*SIGNAL_LEVEL always returns 100%! so using FE_HAS_SIGNAL as switch*/ | |
509 | if (state->it913x_status & FE_HAS_SIGNAL) | |
510 | ret = (ret * 0xff) / 0x64; | |
511 | else | |
512 | ret = 0x0; | |
513 | ret |= ret << 0x8; | |
514 | *strength = ret; | |
515 | return 0; | |
516 | } | |
517 | ||
3339a5b1 | 518 | static int it913x_fe_read_snr(struct dvb_frontend *fe, u16 *snr) |
3dbbf82f MP |
519 | { |
520 | struct it913x_fe_state *state = fe->demodulator_priv; | |
3339a5b1 MP |
521 | int ret; |
522 | u8 reg[3]; | |
523 | u32 snr_val, snr_min, snr_max; | |
524 | u32 temp; | |
525 | ||
526 | ret = it913x_read_reg(state, 0x2c, reg, sizeof(reg)); | |
527 | ||
9544e8a6 | 528 | snr_val = (u32)(reg[2] << 16) | (reg[1] << 8) | reg[0]; |
3339a5b1 MP |
529 | |
530 | ret |= it913x_read_reg(state, 0xf78b, reg, 1); | |
531 | if (reg[0]) | |
532 | snr_val /= reg[0]; | |
533 | ||
534 | if (state->transmission_mode == TRANSMISSION_MODE_2K) | |
535 | snr_val *= 4; | |
536 | else if (state->transmission_mode == TRANSMISSION_MODE_4K) | |
537 | snr_val *= 2; | |
538 | ||
539 | if (state->constellation == QPSK) { | |
540 | snr_min = 0xb4711; | |
541 | snr_max = 0x191451; | |
542 | } else if (state->constellation == QAM_16) { | |
543 | snr_min = 0x4f0d5; | |
544 | snr_max = 0xc7925; | |
545 | } else if (state->constellation == QAM_64) { | |
546 | snr_min = 0x256d0; | |
547 | snr_max = 0x626be; | |
548 | } else | |
549 | return -EINVAL; | |
550 | ||
551 | if (snr_val < snr_min) | |
552 | *snr = 0; | |
553 | else if (snr_val < snr_max) { | |
554 | temp = (snr_val - snr_min) >> 5; | |
555 | temp *= 0xffff; | |
556 | temp /= (snr_max - snr_min) >> 5; | |
557 | *snr = (u16)temp; | |
558 | } else | |
559 | *snr = 0xffff; | |
560 | ||
561 | return (ret < 0) ? -ENODEV : 0; | |
3dbbf82f MP |
562 | } |
563 | ||
564 | static int it913x_fe_read_ber(struct dvb_frontend *fe, u32 *ber) | |
565 | { | |
82a05014 MP |
566 | struct it913x_fe_state *state = fe->demodulator_priv; |
567 | int ret; | |
568 | u8 reg[5]; | |
569 | /* Read Aborted Packets and Pre-Viterbi error rate 5 bytes */ | |
570 | ret = it913x_read_reg(state, RSD_ABORT_PKT_LSB, reg, sizeof(reg)); | |
571 | state->ucblocks += (u32)(reg[1] << 8) | reg[0]; | |
572 | *ber = (u32)(reg[4] << 16) | (reg[3] << 8) | reg[2]; | |
3dbbf82f MP |
573 | return 0; |
574 | } | |
575 | ||
576 | static int it913x_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) | |
577 | { | |
82a05014 MP |
578 | struct it913x_fe_state *state = fe->demodulator_priv; |
579 | int ret; | |
580 | u8 reg[2]; | |
581 | /* Aborted Packets */ | |
582 | ret = it913x_read_reg(state, RSD_ABORT_PKT_LSB, reg, sizeof(reg)); | |
583 | state->ucblocks += (u32)(reg[1] << 8) | reg[0]; | |
584 | *ucblocks = state->ucblocks; | |
585 | return ret; | |
3dbbf82f MP |
586 | } |
587 | ||
7c61d80a | 588 | static int it913x_fe_get_frontend(struct dvb_frontend *fe) |
3dbbf82f | 589 | { |
7c61d80a | 590 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
3dbbf82f MP |
591 | struct it913x_fe_state *state = fe->demodulator_priv; |
592 | int ret; | |
593 | u8 reg[8]; | |
594 | ||
595 | ret = it913x_read_reg(state, REG_TPSD_TX_MODE, reg, sizeof(reg)); | |
596 | ||
597 | if (reg[3] < 3) | |
f908cf1d | 598 | p->modulation = fe_con[reg[3]]; |
3339a5b1 | 599 | |
3dbbf82f | 600 | if (reg[0] < 3) |
f908cf1d | 601 | p->transmission_mode = fe_mode[reg[0]]; |
3339a5b1 | 602 | |
3dbbf82f | 603 | if (reg[1] < 4) |
f908cf1d | 604 | p->guard_interval = fe_gi[reg[1]]; |
3dbbf82f MP |
605 | |
606 | if (reg[2] < 4) | |
f908cf1d MCC |
607 | p->hierarchy = fe_hi[reg[2]]; |
608 | ||
609 | p->code_rate_HP = (reg[6] < 6) ? fe_code[reg[6]] : FEC_NONE; | |
610 | p->code_rate_LP = (reg[7] < 6) ? fe_code[reg[7]] : FEC_NONE; | |
3dbbf82f | 611 | |
f908cf1d MCC |
612 | /* Update internal state to reflect the autodetected props */ |
613 | state->constellation = p->modulation; | |
614 | state->transmission_mode = p->transmission_mode; | |
3dbbf82f MP |
615 | |
616 | return 0; | |
617 | } | |
618 | ||
f908cf1d | 619 | static int it913x_fe_set_frontend(struct dvb_frontend *fe) |
3dbbf82f | 620 | { |
f908cf1d | 621 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
3dbbf82f MP |
622 | struct it913x_fe_state *state = fe->demodulator_priv; |
623 | int ret, i; | |
624 | u8 empty_ch, last_ch; | |
625 | ||
626 | state->it913x_status = 0; | |
627 | ||
628 | /* Set bw*/ | |
f908cf1d | 629 | ret = it913x_fe_select_bw(state, p->bandwidth_hz, |
3dbbf82f MP |
630 | state->adcFrequency); |
631 | ||
632 | /* Training Mode Off */ | |
633 | ret = it913x_write_reg(state, PRO_LINK, TRAINING_MODE, 0x0); | |
634 | ||
635 | /* Clear Empty Channel */ | |
636 | ret = it913x_write_reg(state, PRO_DMOD, EMPTY_CHANNEL_STATUS, 0x0); | |
637 | ||
638 | /* Clear bits */ | |
639 | ret = it913x_write_reg(state, PRO_DMOD, MP2IF_SYNC_LK, 0x0); | |
640 | /* LED on */ | |
641 | ret = it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x1); | |
642 | /* Select Band*/ | |
643 | if ((p->frequency >= 51000000) && (p->frequency <= 230000000)) | |
644 | i = 0; | |
645 | else if ((p->frequency >= 350000000) && (p->frequency <= 900000000)) | |
646 | i = 1; | |
647 | else if ((p->frequency >= 1450000000) && (p->frequency <= 1680000000)) | |
648 | i = 2; | |
f908cf1d MCC |
649 | else |
650 | return -EOPNOTSUPP; | |
3dbbf82f MP |
651 | |
652 | ret = it913x_write_reg(state, PRO_DMOD, FREE_BAND, i); | |
653 | ||
654 | deb_info("Frontend Set Tuner Type %02x", state->tuner_type); | |
655 | switch (state->tuner_type) { | |
b7d425d3 MP |
656 | case IT9135_38: |
657 | case IT9135_51: | |
658 | case IT9135_52: | |
659 | case IT9135_60: | |
660 | case IT9135_61: | |
661 | case IT9135_62: | |
3dbbf82f | 662 | ret = it9137_set_tuner(state, |
f908cf1d | 663 | p->bandwidth_hz, p->frequency); |
3dbbf82f MP |
664 | break; |
665 | default: | |
666 | if (fe->ops.tuner_ops.set_params) { | |
14d24d14 | 667 | fe->ops.tuner_ops.set_params(fe); |
3dbbf82f MP |
668 | if (fe->ops.i2c_gate_ctrl) |
669 | fe->ops.i2c_gate_ctrl(fe, 0); | |
670 | } | |
671 | break; | |
672 | } | |
673 | /* LED off */ | |
674 | ret = it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x0); | |
675 | /* Trigger ofsm */ | |
676 | ret = it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x0); | |
677 | last_ch = 2; | |
678 | for (i = 0; i < 40; ++i) { | |
679 | empty_ch = it913x_read_reg_u8(state, EMPTY_CHANNEL_STATUS); | |
680 | if (last_ch == 1 && empty_ch == 1) | |
681 | break; | |
682 | if (last_ch == 2 && empty_ch == 2) | |
683 | return 0; | |
684 | last_ch = empty_ch; | |
685 | msleep(25); | |
686 | } | |
687 | for (i = 0; i < 40; ++i) { | |
688 | if (it913x_read_reg_u8(state, D_TPSD_LOCK) == 1) | |
689 | break; | |
690 | msleep(25); | |
691 | } | |
692 | ||
693 | state->frequency = p->frequency; | |
694 | return 0; | |
695 | } | |
696 | ||
697 | static int it913x_fe_suspend(struct it913x_fe_state *state) | |
698 | { | |
699 | int ret, i; | |
700 | u8 b; | |
701 | ||
702 | ret = it913x_write_reg(state, PRO_DMOD, SUSPEND_FLAG, 0x1); | |
703 | ||
704 | ret |= it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x0); | |
705 | ||
706 | for (i = 0; i < 128; i++) { | |
707 | ret = it913x_read_reg(state, SUSPEND_FLAG, &b, 1); | |
708 | if (ret < 0) | |
e3052885 | 709 | return -ENODEV; |
3dbbf82f MP |
710 | if (b == 0) |
711 | break; | |
712 | ||
713 | } | |
714 | ||
715 | ret |= it913x_write_reg(state, PRO_DMOD, AFE_MEM0, 0x8); | |
716 | /* Turn LED off */ | |
e3052885 | 717 | ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x0); |
3dbbf82f | 718 | |
e3052885 MP |
719 | ret |= it913x_fe_script_loader(state, it9137_tuner_off); |
720 | ||
721 | return (ret < 0) ? -ENODEV : 0; | |
3dbbf82f MP |
722 | } |
723 | ||
e3052885 MP |
724 | /* Power sequence */ |
725 | /* Power Up Tuner on -> Frontend suspend off -> Tuner clk on */ | |
726 | /* Power Down Frontend suspend on -> Tuner clk off -> Tuner off */ | |
727 | ||
3dbbf82f MP |
728 | static int it913x_fe_sleep(struct dvb_frontend *fe) |
729 | { | |
730 | struct it913x_fe_state *state = fe->demodulator_priv; | |
731 | return it913x_fe_suspend(state); | |
732 | } | |
733 | ||
3dbbf82f MP |
734 | static u32 compute_div(u32 a, u32 b, u32 x) |
735 | { | |
736 | u32 res = 0; | |
737 | u32 c = 0; | |
738 | u32 i = 0; | |
739 | ||
740 | if (a > b) { | |
741 | c = a / b; | |
742 | a = a - c * b; | |
743 | } | |
744 | ||
745 | for (i = 0; i < x; i++) { | |
746 | if (a >= b) { | |
747 | res += 1; | |
748 | a -= b; | |
749 | } | |
750 | a <<= 1; | |
751 | res <<= 1; | |
752 | } | |
753 | ||
754 | res = (c << x) + res; | |
755 | ||
756 | return res; | |
757 | } | |
758 | ||
759 | static int it913x_fe_start(struct it913x_fe_state *state) | |
760 | { | |
b7d425d3 | 761 | struct it913xset *set_lna; |
3dbbf82f MP |
762 | struct it913xset *set_mode; |
763 | int ret; | |
b7d425d3 | 764 | u8 adf = (state->config->adf & 0xf); |
3dbbf82f MP |
765 | u32 adc, xtal; |
766 | u8 b[4]; | |
767 | ||
b7d425d3 MP |
768 | if (state->config->chip_ver == 1) |
769 | ret = it913x_init_tuner(state); | |
7c2808e2 | 770 | |
ed942c50 MP |
771 | info("ADF table value :%02x", adf); |
772 | ||
2b3c13ec | 773 | if (adf < 10) { |
3dbbf82f MP |
774 | state->crystalFrequency = fe_clockTable[adf].xtal ; |
775 | state->table = fe_clockTable[adf].table; | |
776 | state->adcFrequency = state->table->adcFrequency; | |
777 | ||
778 | adc = compute_div(state->adcFrequency, 1000000ul, 19ul); | |
779 | xtal = compute_div(state->crystalFrequency, 1000000ul, 19ul); | |
780 | ||
781 | } else | |
782 | return -EINVAL; | |
783 | ||
3dbbf82f MP |
784 | /* Set LED indicator on GPIOH3 */ |
785 | ret = it913x_write_reg(state, PRO_LINK, GPIOH3_EN, 0x1); | |
786 | ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_ON, 0x1); | |
787 | ret |= it913x_write_reg(state, PRO_LINK, GPIOH3_O, 0x1); | |
788 | ||
3dbbf82f MP |
789 | ret |= it913x_write_reg(state, PRO_LINK, 0xf641, state->tuner_type); |
790 | ret |= it913x_write_reg(state, PRO_DMOD, 0xf5ca, 0x01); | |
791 | ret |= it913x_write_reg(state, PRO_DMOD, 0xf715, 0x01); | |
792 | ||
793 | b[0] = xtal & 0xff; | |
794 | b[1] = (xtal >> 8) & 0xff; | |
795 | b[2] = (xtal >> 16) & 0xff; | |
796 | b[3] = (xtal >> 24); | |
797 | ret |= it913x_write(state, PRO_DMOD, XTAL_CLK, b , 4); | |
798 | ||
799 | b[0] = adc & 0xff; | |
800 | b[1] = (adc >> 8) & 0xff; | |
801 | b[2] = (adc >> 16) & 0xff; | |
802 | ret |= it913x_write(state, PRO_DMOD, ADC_FREQ, b, 3); | |
ed942c50 | 803 | |
990f49af MP |
804 | if (state->config->adc_x2) |
805 | ret |= it913x_write_reg(state, PRO_DMOD, ADC_X_2, 0x01); | |
806 | b[0] = 0; | |
807 | b[1] = 0; | |
808 | b[2] = 0; | |
809 | ret |= it913x_write(state, PRO_DMOD, 0x0029, b, 3); | |
810 | ||
811 | info("Crystal Frequency :%d Adc Frequency :%d ADC X2: %02x", | |
812 | state->crystalFrequency, state->adcFrequency, | |
813 | state->config->adc_x2); | |
ed942c50 MP |
814 | deb_info("Xtal value :%04x Adc value :%04x", xtal, adc); |
815 | ||
b7d425d3 MP |
816 | if (ret < 0) |
817 | return -ENODEV; | |
3dbbf82f | 818 | |
b7d425d3 MP |
819 | /* v1 or v2 tuner script */ |
820 | if (state->config->chip_ver > 1) | |
821 | ret = it913x_fe_script_loader(state, it9135_v2); | |
822 | else | |
823 | ret = it913x_fe_script_loader(state, it9135_v1); | |
824 | if (ret < 0) | |
825 | return ret; | |
826 | ||
827 | /* LNA Scripts */ | |
3dbbf82f | 828 | switch (state->tuner_type) { |
b7d425d3 MP |
829 | case IT9135_51: |
830 | set_lna = it9135_51; | |
831 | break; | |
832 | case IT9135_52: | |
833 | set_lna = it9135_52; | |
3dbbf82f | 834 | break; |
b7d425d3 MP |
835 | case IT9135_60: |
836 | set_lna = it9135_60; | |
837 | break; | |
838 | case IT9135_61: | |
839 | set_lna = it9135_61; | |
840 | break; | |
841 | case IT9135_62: | |
842 | set_lna = it9135_62; | |
843 | break; | |
844 | case IT9135_38: | |
3dbbf82f | 845 | default: |
b7d425d3 | 846 | set_lna = it9135_38; |
3dbbf82f | 847 | } |
ed942c50 MP |
848 | info("Tuner LNA type :%02x", state->tuner_type); |
849 | ||
b7d425d3 MP |
850 | ret = it913x_fe_script_loader(state, set_lna); |
851 | if (ret < 0) | |
852 | return ret; | |
853 | ||
854 | if (state->config->chip_ver == 2) { | |
855 | ret = it913x_write_reg(state, PRO_DMOD, TRIGGER_OFSM, 0x1); | |
856 | ret |= it913x_write_reg(state, PRO_LINK, PADODPU, 0x0); | |
857 | ret |= it913x_write_reg(state, PRO_LINK, AGC_O_D, 0x0); | |
858 | ret |= it913x_init_tuner(state); | |
859 | } | |
860 | if (ret < 0) | |
861 | return -ENODEV; | |
7c2808e2 | 862 | |
3dbbf82f MP |
863 | /* Always solo frontend */ |
864 | set_mode = set_solo_fe; | |
865 | ret |= it913x_fe_script_loader(state, set_mode); | |
866 | ||
867 | ret |= it913x_fe_suspend(state); | |
b7d425d3 | 868 | return (ret < 0) ? -ENODEV : 0; |
3dbbf82f MP |
869 | } |
870 | ||
871 | static int it913x_fe_init(struct dvb_frontend *fe) | |
872 | { | |
873 | struct it913x_fe_state *state = fe->demodulator_priv; | |
3dbbf82f | 874 | int ret = 0; |
e3052885 MP |
875 | /* Power Up Tuner - common all versions */ |
876 | ret = it913x_write_reg(state, PRO_DMOD, 0xec40, 0x1); | |
3dbbf82f | 877 | |
3dbbf82f MP |
878 | ret |= it913x_fe_script_loader(state, init_1); |
879 | ||
990f49af MP |
880 | ret |= it913x_write_reg(state, PRO_DMOD, AFE_MEM0, 0x0); |
881 | ||
b7d425d3 | 882 | ret |= it913x_write_reg(state, PRO_DMOD, 0xfba8, 0x0); |
e3052885 | 883 | |
3dbbf82f MP |
884 | return (ret < 0) ? -ENODEV : 0; |
885 | } | |
886 | ||
887 | static void it913x_fe_release(struct dvb_frontend *fe) | |
888 | { | |
889 | struct it913x_fe_state *state = fe->demodulator_priv; | |
890 | kfree(state); | |
891 | } | |
892 | ||
893 | static struct dvb_frontend_ops it913x_fe_ofdm_ops; | |
894 | ||
895 | struct dvb_frontend *it913x_fe_attach(struct i2c_adapter *i2c_adap, | |
b7d425d3 | 896 | u8 i2c_addr, struct ite_config *config) |
3dbbf82f MP |
897 | { |
898 | struct it913x_fe_state *state = NULL; | |
899 | int ret; | |
b7d425d3 | 900 | |
3dbbf82f MP |
901 | /* allocate memory for the internal state */ |
902 | state = kzalloc(sizeof(struct it913x_fe_state), GFP_KERNEL); | |
903 | if (state == NULL) | |
b7d425d3 MP |
904 | return NULL; |
905 | if (config == NULL) | |
3dbbf82f MP |
906 | goto error; |
907 | ||
908 | state->i2c_adap = i2c_adap; | |
909 | state->i2c_addr = i2c_addr; | |
b7d425d3 MP |
910 | state->config = config; |
911 | ||
912 | switch (state->config->tuner_id_0) { | |
913 | case IT9135_51: | |
914 | case IT9135_52: | |
915 | case IT9135_60: | |
916 | case IT9135_61: | |
917 | case IT9135_62: | |
918 | state->tuner_type = state->config->tuner_id_0; | |
919 | break; | |
920 | default: | |
921 | case IT9135_38: | |
922 | state->tuner_type = IT9135_38; | |
923 | } | |
3dbbf82f MP |
924 | |
925 | ret = it913x_fe_start(state); | |
926 | if (ret < 0) | |
927 | goto error; | |
928 | ||
929 | ||
930 | /* create dvb_frontend */ | |
931 | memcpy(&state->frontend.ops, &it913x_fe_ofdm_ops, | |
932 | sizeof(struct dvb_frontend_ops)); | |
933 | state->frontend.demodulator_priv = state; | |
934 | ||
935 | return &state->frontend; | |
936 | error: | |
937 | kfree(state); | |
938 | return NULL; | |
939 | } | |
940 | EXPORT_SYMBOL(it913x_fe_attach); | |
941 | ||
942 | static struct dvb_frontend_ops it913x_fe_ofdm_ops = { | |
f908cf1d | 943 | .delsys = { SYS_DVBT }, |
3dbbf82f MP |
944 | .info = { |
945 | .name = "it913x-fe DVB-T", | |
3dbbf82f MP |
946 | .frequency_min = 51000000, |
947 | .frequency_max = 1680000000, | |
948 | .frequency_stepsize = 62500, | |
949 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
950 | FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | | |
951 | FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO | | |
952 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
953 | FE_CAN_TRANSMISSION_MODE_AUTO | | |
954 | FE_CAN_GUARD_INTERVAL_AUTO | | |
955 | FE_CAN_HIERARCHY_AUTO, | |
956 | }, | |
957 | ||
958 | .release = it913x_fe_release, | |
959 | ||
960 | .init = it913x_fe_init, | |
961 | .sleep = it913x_fe_sleep, | |
962 | ||
f908cf1d MCC |
963 | .set_frontend = it913x_fe_set_frontend, |
964 | .get_frontend = it913x_fe_get_frontend, | |
3dbbf82f MP |
965 | |
966 | .read_status = it913x_fe_read_status, | |
967 | .read_signal_strength = it913x_fe_read_signal_strength, | |
968 | .read_snr = it913x_fe_read_snr, | |
969 | .read_ber = it913x_fe_read_ber, | |
970 | .read_ucblocks = it913x_fe_read_ucblocks, | |
971 | }; | |
972 | ||
973 | MODULE_DESCRIPTION("it913x Frontend and it9137 tuner"); | |
974 | MODULE_AUTHOR("Malcolm Priestley tvboxspy@gmail.com"); | |
82a05014 | 975 | MODULE_VERSION("1.13"); |
3dbbf82f | 976 | MODULE_LICENSE("GPL"); |