Commit | Line | Data |
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780dfef3 CP |
1 | /* |
2 | * Driver for Zarlink DVB-T ZL10353 demodulator | |
3 | * | |
794604c3 | 4 | * Copyright (C) 2006, 2007 Christopher Pascoe <c.pascoe@itee.uq.edu.au> |
780dfef3 CP |
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 | * | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
794604c3 | 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
780dfef3 CP |
20 | */ |
21 | ||
22 | #include <linux/kernel.h> | |
23 | #include <linux/module.h> | |
780dfef3 CP |
24 | #include <linux/init.h> |
25 | #include <linux/delay.h> | |
26 | #include <linux/string.h> | |
27 | #include <linux/slab.h> | |
794604c3 | 28 | #include <asm/div64.h> |
780dfef3 CP |
29 | |
30 | #include "dvb_frontend.h" | |
31 | #include "zl10353_priv.h" | |
32 | #include "zl10353.h" | |
33 | ||
34 | struct zl10353_state { | |
35 | struct i2c_adapter *i2c; | |
36 | struct dvb_frontend frontend; | |
780dfef3 CP |
37 | |
38 | struct zl10353_config config; | |
bc514710 | 39 | |
4e4d2bcf MCC |
40 | u32 bandwidth; |
41 | u32 ucblocks; | |
42 | u32 frequency; | |
780dfef3 CP |
43 | }; |
44 | ||
f7f57770 AP |
45 | static int debug; |
46 | #define dprintk(args...) \ | |
47 | do { \ | |
48 | if (debug) printk(KERN_DEBUG "zl10353: " args); \ | |
49 | } while (0) | |
50 | ||
ff699e6b | 51 | static int debug_regs; |
780dfef3 CP |
52 | |
53 | static int zl10353_single_write(struct dvb_frontend *fe, u8 reg, u8 val) | |
54 | { | |
55 | struct zl10353_state *state = fe->demodulator_priv; | |
56 | u8 buf[2] = { reg, val }; | |
57 | struct i2c_msg msg = { .addr = state->config.demod_address, .flags = 0, | |
58 | .buf = buf, .len = 2 }; | |
59 | int err = i2c_transfer(state->i2c, &msg, 1); | |
60 | if (err != 1) { | |
61 | printk("zl10353: write to reg %x failed (err = %d)!\n", reg, err); | |
62 | return err; | |
63 | } | |
64 | return 0; | |
65 | } | |
66 | ||
2e4e98e7 | 67 | static int zl10353_write(struct dvb_frontend *fe, const u8 ibuf[], int ilen) |
780dfef3 CP |
68 | { |
69 | int err, i; | |
70 | for (i = 0; i < ilen - 1; i++) | |
71 | if ((err = zl10353_single_write(fe, ibuf[0] + i, ibuf[i + 1]))) | |
72 | return err; | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
77 | static int zl10353_read_register(struct zl10353_state *state, u8 reg) | |
78 | { | |
79 | int ret; | |
80 | u8 b0[1] = { reg }; | |
81 | u8 b1[1] = { 0 }; | |
82 | struct i2c_msg msg[2] = { { .addr = state->config.demod_address, | |
83 | .flags = 0, | |
84 | .buf = b0, .len = 1 }, | |
85 | { .addr = state->config.demod_address, | |
86 | .flags = I2C_M_RD, | |
87 | .buf = b1, .len = 1 } }; | |
88 | ||
89 | ret = i2c_transfer(state->i2c, msg, 2); | |
90 | ||
91 | if (ret != 2) { | |
92 | printk("%s: readreg error (reg=%d, ret==%i)\n", | |
271ddbf7 | 93 | __func__, reg, ret); |
780dfef3 CP |
94 | return ret; |
95 | } | |
96 | ||
97 | return b1[0]; | |
98 | } | |
99 | ||
c04e89b1 | 100 | static void zl10353_dump_regs(struct dvb_frontend *fe) |
780dfef3 CP |
101 | { |
102 | struct zl10353_state *state = fe->demodulator_priv; | |
780dfef3 CP |
103 | int ret; |
104 | u8 reg; | |
105 | ||
106 | /* Dump all registers. */ | |
107 | for (reg = 0; ; reg++) { | |
108 | if (reg % 16 == 0) { | |
109 | if (reg) | |
458f9aa3 JN |
110 | printk(KERN_CONT "\n"); |
111 | printk(KERN_DEBUG "%02x:", reg); | |
780dfef3 CP |
112 | } |
113 | ret = zl10353_read_register(state, reg); | |
114 | if (ret >= 0) | |
458f9aa3 | 115 | printk(KERN_CONT " %02x", (u8)ret); |
780dfef3 | 116 | else |
458f9aa3 | 117 | printk(KERN_CONT " --"); |
780dfef3 CP |
118 | if (reg == 0xff) |
119 | break; | |
120 | } | |
458f9aa3 | 121 | printk(KERN_CONT "\n"); |
780dfef3 CP |
122 | } |
123 | ||
f7f57770 | 124 | static void zl10353_calc_nominal_rate(struct dvb_frontend *fe, |
4e4d2bcf | 125 | u32 bandwidth, |
f7f57770 AP |
126 | u16 *nominal_rate) |
127 | { | |
f7f57770 | 128 | struct zl10353_state *state = fe->demodulator_priv; |
a1dcd9de CP |
129 | u32 adc_clock = 450560; /* 45.056 MHz */ |
130 | u64 value; | |
4e4d2bcf | 131 | u8 bw = bandwidth / 1000000; |
f7f57770 AP |
132 | |
133 | if (state->config.adc_clock) | |
134 | adc_clock = state->config.adc_clock; | |
135 | ||
18ff605a AM |
136 | value = (u64)10 * (1 << 23) / 7 * 125; |
137 | value = (bw * value) + adc_clock / 2; | |
8a73faab | 138 | *nominal_rate = div_u64(value, adc_clock); |
f7f57770 AP |
139 | |
140 | dprintk("%s: bw %d, adc_clock %d => 0x%x\n", | |
271ddbf7 | 141 | __func__, bw, adc_clock, *nominal_rate); |
f7f57770 AP |
142 | } |
143 | ||
794604c3 CP |
144 | static void zl10353_calc_input_freq(struct dvb_frontend *fe, |
145 | u16 *input_freq) | |
146 | { | |
147 | struct zl10353_state *state = fe->demodulator_priv; | |
a1dcd9de CP |
148 | u32 adc_clock = 450560; /* 45.056 MHz */ |
149 | int if2 = 361667; /* 36.1667 MHz */ | |
794604c3 CP |
150 | int ife; |
151 | u64 value; | |
152 | ||
153 | if (state->config.adc_clock) | |
154 | adc_clock = state->config.adc_clock; | |
155 | if (state->config.if2) | |
156 | if2 = state->config.if2; | |
157 | ||
158 | if (adc_clock >= if2 * 2) | |
159 | ife = if2; | |
160 | else { | |
161 | ife = adc_clock - (if2 % adc_clock); | |
162 | if (ife > adc_clock / 2) | |
163 | ife = adc_clock - ife; | |
164 | } | |
8a73faab | 165 | value = div_u64((u64)65536 * ife + adc_clock / 2, adc_clock); |
794604c3 CP |
166 | *input_freq = -value; |
167 | ||
168 | dprintk("%s: if2 %d, ife %d, adc_clock %d => %d / 0x%x\n", | |
271ddbf7 | 169 | __func__, if2, ife, adc_clock, -(int)value, *input_freq); |
794604c3 CP |
170 | } |
171 | ||
780dfef3 CP |
172 | static int zl10353_sleep(struct dvb_frontend *fe) |
173 | { | |
174 | static u8 zl10353_softdown[] = { 0x50, 0x0C, 0x44 }; | |
175 | ||
176 | zl10353_write(fe, zl10353_softdown, sizeof(zl10353_softdown)); | |
177 | return 0; | |
178 | } | |
179 | ||
4e4d2bcf | 180 | static int zl10353_set_parameters(struct dvb_frontend *fe) |
780dfef3 | 181 | { |
4e4d2bcf | 182 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
8dec0732 | 183 | struct zl10353_state *state = fe->demodulator_priv; |
794604c3 | 184 | u16 nominal_rate, input_freq; |
bc514710 CP |
185 | u8 pllbuf[6] = { 0x67 }, acq_ctl = 0; |
186 | u16 tps = 0; | |
780dfef3 | 187 | |
4e4d2bcf | 188 | state->frequency = c->frequency; |
decee2e8 | 189 | |
bc514710 | 190 | zl10353_single_write(fe, RESET, 0x80); |
780dfef3 CP |
191 | udelay(200); |
192 | zl10353_single_write(fe, 0xEA, 0x01); | |
193 | udelay(200); | |
194 | zl10353_single_write(fe, 0xEA, 0x00); | |
195 | ||
bc514710 CP |
196 | zl10353_single_write(fe, AGC_TARGET, 0x28); |
197 | ||
4e4d2bcf | 198 | if (c->transmission_mode != TRANSMISSION_MODE_AUTO) |
bc514710 | 199 | acq_ctl |= (1 << 0); |
4e4d2bcf | 200 | if (c->guard_interval != GUARD_INTERVAL_AUTO) |
bc514710 CP |
201 | acq_ctl |= (1 << 1); |
202 | zl10353_single_write(fe, ACQ_CTL, acq_ctl); | |
f7f57770 | 203 | |
4e4d2bcf MCC |
204 | switch (c->bandwidth_hz) { |
205 | case 6000000: | |
bc514710 CP |
206 | /* These are extrapolated from the 7 and 8MHz values */ |
207 | zl10353_single_write(fe, MCLK_RATIO, 0x97); | |
208 | zl10353_single_write(fe, 0x64, 0x34); | |
a9dbe5dc | 209 | zl10353_single_write(fe, 0xcc, 0xdd); |
bc514710 | 210 | break; |
4e4d2bcf | 211 | case 7000000: |
bc514710 CP |
212 | zl10353_single_write(fe, MCLK_RATIO, 0x86); |
213 | zl10353_single_write(fe, 0x64, 0x35); | |
a9dbe5dc | 214 | zl10353_single_write(fe, 0xcc, 0x73); |
bc514710 | 215 | break; |
bc514710 | 216 | default: |
4e4d2bcf MCC |
217 | c->bandwidth_hz = 8000000; |
218 | /* fall though */ | |
219 | case 8000000: | |
bc514710 CP |
220 | zl10353_single_write(fe, MCLK_RATIO, 0x75); |
221 | zl10353_single_write(fe, 0x64, 0x36); | |
a9dbe5dc | 222 | zl10353_single_write(fe, 0xcc, 0x73); |
bc514710 CP |
223 | } |
224 | ||
4e4d2bcf | 225 | zl10353_calc_nominal_rate(fe, c->bandwidth_hz, &nominal_rate); |
f7f57770 AP |
226 | zl10353_single_write(fe, TRL_NOMINAL_RATE_1, msb(nominal_rate)); |
227 | zl10353_single_write(fe, TRL_NOMINAL_RATE_0, lsb(nominal_rate)); | |
4e4d2bcf | 228 | state->bandwidth = c->bandwidth_hz; |
f7f57770 | 229 | |
794604c3 CP |
230 | zl10353_calc_input_freq(fe, &input_freq); |
231 | zl10353_single_write(fe, INPUT_FREQ_1, msb(input_freq)); | |
232 | zl10353_single_write(fe, INPUT_FREQ_0, lsb(input_freq)); | |
233 | ||
bc514710 | 234 | /* Hint at TPS settings */ |
4e4d2bcf | 235 | switch (c->code_rate_HP) { |
bc514710 CP |
236 | case FEC_2_3: |
237 | tps |= (1 << 7); | |
238 | break; | |
239 | case FEC_3_4: | |
240 | tps |= (2 << 7); | |
241 | break; | |
242 | case FEC_5_6: | |
243 | tps |= (3 << 7); | |
244 | break; | |
245 | case FEC_7_8: | |
246 | tps |= (4 << 7); | |
247 | break; | |
248 | case FEC_1_2: | |
249 | case FEC_AUTO: | |
250 | break; | |
251 | default: | |
252 | return -EINVAL; | |
253 | } | |
254 | ||
4e4d2bcf | 255 | switch (c->code_rate_LP) { |
bc514710 CP |
256 | case FEC_2_3: |
257 | tps |= (1 << 4); | |
258 | break; | |
259 | case FEC_3_4: | |
260 | tps |= (2 << 4); | |
261 | break; | |
262 | case FEC_5_6: | |
263 | tps |= (3 << 4); | |
264 | break; | |
265 | case FEC_7_8: | |
266 | tps |= (4 << 4); | |
267 | break; | |
268 | case FEC_1_2: | |
269 | case FEC_AUTO: | |
270 | break; | |
271 | case FEC_NONE: | |
4e4d2bcf MCC |
272 | if (c->hierarchy == HIERARCHY_AUTO || |
273 | c->hierarchy == HIERARCHY_NONE) | |
bc514710 CP |
274 | break; |
275 | default: | |
276 | return -EINVAL; | |
277 | } | |
278 | ||
4e4d2bcf | 279 | switch (c->modulation) { |
bc514710 CP |
280 | case QPSK: |
281 | break; | |
282 | case QAM_AUTO: | |
283 | case QAM_16: | |
284 | tps |= (1 << 13); | |
285 | break; | |
286 | case QAM_64: | |
287 | tps |= (2 << 13); | |
288 | break; | |
289 | default: | |
290 | return -EINVAL; | |
291 | } | |
292 | ||
4e4d2bcf | 293 | switch (c->transmission_mode) { |
bc514710 CP |
294 | case TRANSMISSION_MODE_2K: |
295 | case TRANSMISSION_MODE_AUTO: | |
296 | break; | |
297 | case TRANSMISSION_MODE_8K: | |
298 | tps |= (1 << 0); | |
299 | break; | |
300 | default: | |
301 | return -EINVAL; | |
302 | } | |
303 | ||
4e4d2bcf | 304 | switch (c->guard_interval) { |
bc514710 CP |
305 | case GUARD_INTERVAL_1_32: |
306 | case GUARD_INTERVAL_AUTO: | |
307 | break; | |
308 | case GUARD_INTERVAL_1_16: | |
309 | tps |= (1 << 2); | |
310 | break; | |
311 | case GUARD_INTERVAL_1_8: | |
312 | tps |= (2 << 2); | |
313 | break; | |
314 | case GUARD_INTERVAL_1_4: | |
315 | tps |= (3 << 2); | |
316 | break; | |
317 | default: | |
318 | return -EINVAL; | |
319 | } | |
320 | ||
4e4d2bcf | 321 | switch (c->hierarchy) { |
bc514710 CP |
322 | case HIERARCHY_AUTO: |
323 | case HIERARCHY_NONE: | |
324 | break; | |
325 | case HIERARCHY_1: | |
326 | tps |= (1 << 10); | |
327 | break; | |
328 | case HIERARCHY_2: | |
329 | tps |= (2 << 10); | |
330 | break; | |
331 | case HIERARCHY_4: | |
332 | tps |= (3 << 10); | |
333 | break; | |
334 | default: | |
335 | return -EINVAL; | |
336 | } | |
337 | ||
338 | zl10353_single_write(fe, TPS_GIVEN_1, msb(tps)); | |
339 | zl10353_single_write(fe, TPS_GIVEN_0, lsb(tps)); | |
340 | ||
0a11bb86 AP |
341 | if (fe->ops.i2c_gate_ctrl) |
342 | fe->ops.i2c_gate_ctrl(fe, 0); | |
780dfef3 | 343 | |
58d834ea CP |
344 | /* |
345 | * If there is no tuner attached to the secondary I2C bus, we call | |
346 | * set_params to program a potential tuner attached somewhere else. | |
347 | * Otherwise, we update the PLL registers via calc_regs. | |
348 | */ | |
8dec0732 | 349 | if (state->config.no_tuner) { |
dea74869 | 350 | if (fe->ops.tuner_ops.set_params) { |
14d24d14 | 351 | fe->ops.tuner_ops.set_params(fe); |
0a11bb86 AP |
352 | if (fe->ops.i2c_gate_ctrl) |
353 | fe->ops.i2c_gate_ctrl(fe, 0); | |
8dec0732 | 354 | } |
58d834ea | 355 | } else if (fe->ops.tuner_ops.calc_regs) { |
249fa0b0 | 356 | fe->ops.tuner_ops.calc_regs(fe, pllbuf + 1, 5); |
e994b8d9 | 357 | pllbuf[1] <<= 1; |
58d834ea | 358 | zl10353_write(fe, pllbuf, sizeof(pllbuf)); |
e994b8d9 | 359 | } |
780dfef3 | 360 | |
fc3398d8 | 361 | zl10353_single_write(fe, 0x5F, 0x13); |
58d834ea CP |
362 | |
363 | /* If no attached tuner or invalid PLL registers, just start the FSM. */ | |
364 | if (state->config.no_tuner || fe->ops.tuner_ops.calc_regs == NULL) | |
365 | zl10353_single_write(fe, FSM_GO, 0x01); | |
366 | else | |
367 | zl10353_single_write(fe, TUNER_GO, 0x01); | |
368 | ||
bc514710 CP |
369 | return 0; |
370 | } | |
371 | ||
7e3e68bc MCC |
372 | static int zl10353_get_parameters(struct dvb_frontend *fe, |
373 | struct dtv_frontend_properties *c) | |
bc514710 CP |
374 | { |
375 | struct zl10353_state *state = fe->demodulator_priv; | |
bc514710 CP |
376 | int s6, s9; |
377 | u16 tps; | |
378 | static const u8 tps_fec_to_api[8] = { | |
379 | FEC_1_2, | |
380 | FEC_2_3, | |
381 | FEC_3_4, | |
382 | FEC_5_6, | |
383 | FEC_7_8, | |
384 | FEC_AUTO, | |
385 | FEC_AUTO, | |
386 | FEC_AUTO | |
387 | }; | |
388 | ||
389 | s6 = zl10353_read_register(state, STATUS_6); | |
390 | s9 = zl10353_read_register(state, STATUS_9); | |
391 | if (s6 < 0 || s9 < 0) | |
392 | return -EREMOTEIO; | |
393 | if ((s6 & (1 << 5)) == 0 || (s9 & (1 << 4)) == 0) | |
394 | return -EINVAL; /* no FE or TPS lock */ | |
395 | ||
396 | tps = zl10353_read_register(state, TPS_RECEIVED_1) << 8 | | |
397 | zl10353_read_register(state, TPS_RECEIVED_0); | |
398 | ||
4e4d2bcf MCC |
399 | c->code_rate_HP = tps_fec_to_api[(tps >> 7) & 7]; |
400 | c->code_rate_LP = tps_fec_to_api[(tps >> 4) & 7]; | |
bc514710 CP |
401 | |
402 | switch ((tps >> 13) & 3) { | |
403 | case 0: | |
4e4d2bcf | 404 | c->modulation = QPSK; |
bc514710 CP |
405 | break; |
406 | case 1: | |
4e4d2bcf | 407 | c->modulation = QAM_16; |
bc514710 CP |
408 | break; |
409 | case 2: | |
4e4d2bcf | 410 | c->modulation = QAM_64; |
bc514710 CP |
411 | break; |
412 | default: | |
4e4d2bcf | 413 | c->modulation = QAM_AUTO; |
bc514710 CP |
414 | break; |
415 | } | |
416 | ||
4e4d2bcf | 417 | c->transmission_mode = (tps & 0x01) ? TRANSMISSION_MODE_8K : |
bc514710 CP |
418 | TRANSMISSION_MODE_2K; |
419 | ||
420 | switch ((tps >> 2) & 3) { | |
421 | case 0: | |
4e4d2bcf | 422 | c->guard_interval = GUARD_INTERVAL_1_32; |
bc514710 CP |
423 | break; |
424 | case 1: | |
4e4d2bcf | 425 | c->guard_interval = GUARD_INTERVAL_1_16; |
bc514710 CP |
426 | break; |
427 | case 2: | |
4e4d2bcf | 428 | c->guard_interval = GUARD_INTERVAL_1_8; |
bc514710 CP |
429 | break; |
430 | case 3: | |
4e4d2bcf | 431 | c->guard_interval = GUARD_INTERVAL_1_4; |
bc514710 CP |
432 | break; |
433 | default: | |
4e4d2bcf | 434 | c->guard_interval = GUARD_INTERVAL_AUTO; |
bc514710 CP |
435 | break; |
436 | } | |
437 | ||
438 | switch ((tps >> 10) & 7) { | |
439 | case 0: | |
4e4d2bcf | 440 | c->hierarchy = HIERARCHY_NONE; |
bc514710 CP |
441 | break; |
442 | case 1: | |
4e4d2bcf | 443 | c->hierarchy = HIERARCHY_1; |
bc514710 CP |
444 | break; |
445 | case 2: | |
4e4d2bcf | 446 | c->hierarchy = HIERARCHY_2; |
bc514710 CP |
447 | break; |
448 | case 3: | |
4e4d2bcf | 449 | c->hierarchy = HIERARCHY_4; |
bc514710 CP |
450 | break; |
451 | default: | |
4e4d2bcf | 452 | c->hierarchy = HIERARCHY_AUTO; |
bc514710 CP |
453 | break; |
454 | } | |
455 | ||
4e4d2bcf MCC |
456 | c->frequency = state->frequency; |
457 | c->bandwidth_hz = state->bandwidth; | |
458 | c->inversion = INVERSION_AUTO; | |
780dfef3 CP |
459 | |
460 | return 0; | |
461 | } | |
462 | ||
0df289a2 | 463 | static int zl10353_read_status(struct dvb_frontend *fe, enum fe_status *status) |
780dfef3 CP |
464 | { |
465 | struct zl10353_state *state = fe->demodulator_priv; | |
466 | int s6, s7, s8; | |
467 | ||
468 | if ((s6 = zl10353_read_register(state, STATUS_6)) < 0) | |
469 | return -EREMOTEIO; | |
470 | if ((s7 = zl10353_read_register(state, STATUS_7)) < 0) | |
471 | return -EREMOTEIO; | |
472 | if ((s8 = zl10353_read_register(state, STATUS_8)) < 0) | |
473 | return -EREMOTEIO; | |
474 | ||
475 | *status = 0; | |
476 | if (s6 & (1 << 2)) | |
477 | *status |= FE_HAS_CARRIER; | |
478 | if (s6 & (1 << 1)) | |
479 | *status |= FE_HAS_VITERBI; | |
480 | if (s6 & (1 << 5)) | |
481 | *status |= FE_HAS_LOCK; | |
482 | if (s7 & (1 << 4)) | |
483 | *status |= FE_HAS_SYNC; | |
484 | if (s8 & (1 << 6)) | |
485 | *status |= FE_HAS_SIGNAL; | |
486 | ||
487 | if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) != | |
488 | (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) | |
489 | *status &= ~FE_HAS_LOCK; | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
67b60aad CP |
494 | static int zl10353_read_ber(struct dvb_frontend *fe, u32 *ber) |
495 | { | |
496 | struct zl10353_state *state = fe->demodulator_priv; | |
497 | ||
6345f0f6 CP |
498 | *ber = zl10353_read_register(state, RS_ERR_CNT_2) << 16 | |
499 | zl10353_read_register(state, RS_ERR_CNT_1) << 8 | | |
500 | zl10353_read_register(state, RS_ERR_CNT_0); | |
67b60aad CP |
501 | |
502 | return 0; | |
503 | } | |
504 | ||
505 | static int zl10353_read_signal_strength(struct dvb_frontend *fe, u16 *strength) | |
506 | { | |
507 | struct zl10353_state *state = fe->demodulator_priv; | |
508 | ||
6345f0f6 CP |
509 | u16 signal = zl10353_read_register(state, AGC_GAIN_1) << 10 | |
510 | zl10353_read_register(state, AGC_GAIN_0) << 2 | 3; | |
67b60aad CP |
511 | |
512 | *strength = ~signal; | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
780dfef3 CP |
517 | static int zl10353_read_snr(struct dvb_frontend *fe, u16 *snr) |
518 | { | |
519 | struct zl10353_state *state = fe->demodulator_priv; | |
520 | u8 _snr; | |
521 | ||
522 | if (debug_regs) | |
523 | zl10353_dump_regs(fe); | |
524 | ||
525 | _snr = zl10353_read_register(state, SNR); | |
13c6a9f7 | 526 | *snr = 10 * _snr / 8; |
780dfef3 CP |
527 | |
528 | return 0; | |
529 | } | |
530 | ||
67b60aad CP |
531 | static int zl10353_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
532 | { | |
533 | struct zl10353_state *state = fe->demodulator_priv; | |
2267d2d7 | 534 | u32 ubl = 0; |
decee2e8 | 535 | |
2267d2d7 MCC |
536 | ubl = zl10353_read_register(state, RS_UBC_1) << 8 | |
537 | zl10353_read_register(state, RS_UBC_0); | |
67b60aad | 538 | |
2267d2d7 MCC |
539 | state->ucblocks += ubl; |
540 | *ucblocks = state->ucblocks; | |
67b60aad CP |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
780dfef3 CP |
545 | static int zl10353_get_tune_settings(struct dvb_frontend *fe, |
546 | struct dvb_frontend_tune_settings | |
547 | *fe_tune_settings) | |
548 | { | |
549 | fe_tune_settings->min_delay_ms = 1000; | |
550 | fe_tune_settings->step_size = 0; | |
551 | fe_tune_settings->max_drift = 0; | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static int zl10353_init(struct dvb_frontend *fe) | |
557 | { | |
558 | struct zl10353_state *state = fe->demodulator_priv; | |
559 | u8 zl10353_reset_attach[6] = { 0x50, 0x03, 0x64, 0x46, 0x15, 0x0F }; | |
780dfef3 CP |
560 | |
561 | if (debug_regs) | |
562 | zl10353_dump_regs(fe); | |
8fb95784 CP |
563 | if (state->config.parallel_ts) |
564 | zl10353_reset_attach[2] &= ~0x20; | |
378a2793 AP |
565 | if (state->config.clock_ctl_1) |
566 | zl10353_reset_attach[3] = state->config.clock_ctl_1; | |
567 | if (state->config.pll_0) | |
568 | zl10353_reset_attach[4] = state->config.pll_0; | |
780dfef3 CP |
569 | |
570 | /* Do a "hard" reset if not already done */ | |
8fb95784 CP |
571 | if (zl10353_read_register(state, 0x50) != zl10353_reset_attach[1] || |
572 | zl10353_read_register(state, 0x51) != zl10353_reset_attach[2]) { | |
fdf07b02 | 573 | zl10353_write(fe, zl10353_reset_attach, |
780dfef3 CP |
574 | sizeof(zl10353_reset_attach)); |
575 | if (debug_regs) | |
576 | zl10353_dump_regs(fe); | |
577 | } | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
0a11bb86 AP |
582 | static int zl10353_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) |
583 | { | |
899a6f67 | 584 | struct zl10353_state *state = fe->demodulator_priv; |
0a11bb86 AP |
585 | u8 val = 0x0a; |
586 | ||
5f77af93 | 587 | if (state->config.disable_i2c_gate_ctrl) { |
899a6f67 DB |
588 | /* No tuner attached to the internal I2C bus */ |
589 | /* If set enable I2C bridge, the main I2C bus stopped hardly */ | |
590 | return 0; | |
591 | } | |
592 | ||
0a11bb86 AP |
593 | if (enable) |
594 | val |= 0x10; | |
595 | ||
596 | return zl10353_single_write(fe, 0x62, val); | |
597 | } | |
598 | ||
780dfef3 CP |
599 | static void zl10353_release(struct dvb_frontend *fe) |
600 | { | |
601 | struct zl10353_state *state = fe->demodulator_priv; | |
780dfef3 CP |
602 | kfree(state); |
603 | } | |
604 | ||
605 | static struct dvb_frontend_ops zl10353_ops; | |
606 | ||
607 | struct dvb_frontend *zl10353_attach(const struct zl10353_config *config, | |
608 | struct i2c_adapter *i2c) | |
609 | { | |
610 | struct zl10353_state *state = NULL; | |
378a2793 | 611 | int id; |
780dfef3 CP |
612 | |
613 | /* allocate memory for the internal state */ | |
614 | state = kzalloc(sizeof(struct zl10353_state), GFP_KERNEL); | |
615 | if (state == NULL) | |
616 | goto error; | |
617 | ||
618 | /* setup the state */ | |
619 | state->i2c = i2c; | |
620 | memcpy(&state->config, config, sizeof(struct zl10353_config)); | |
780dfef3 CP |
621 | |
622 | /* check if the demod is there */ | |
378a2793 AP |
623 | id = zl10353_read_register(state, CHIP_ID); |
624 | if ((id != ID_ZL10353) && (id != ID_CE6230) && (id != ID_CE6231)) | |
780dfef3 CP |
625 | goto error; |
626 | ||
627 | /* create dvb_frontend */ | |
dea74869 | 628 | memcpy(&state->frontend.ops, &zl10353_ops, sizeof(struct dvb_frontend_ops)); |
780dfef3 CP |
629 | state->frontend.demodulator_priv = state; |
630 | ||
631 | return &state->frontend; | |
632 | error: | |
633 | kfree(state); | |
634 | return NULL; | |
635 | } | |
636 | ||
637 | static struct dvb_frontend_ops zl10353_ops = { | |
4e4d2bcf | 638 | .delsys = { SYS_DVBT }, |
780dfef3 CP |
639 | .info = { |
640 | .name = "Zarlink ZL10353 DVB-T", | |
780dfef3 CP |
641 | .frequency_min = 174000000, |
642 | .frequency_max = 862000000, | |
643 | .frequency_stepsize = 166667, | |
644 | .frequency_tolerance = 0, | |
645 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | | |
646 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | | |
647 | FE_CAN_FEC_AUTO | | |
648 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
649 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | | |
650 | FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | | |
651 | FE_CAN_MUTE_TS | |
652 | }, | |
653 | ||
654 | .release = zl10353_release, | |
655 | ||
656 | .init = zl10353_init, | |
657 | .sleep = zl10353_sleep, | |
0a11bb86 | 658 | .i2c_gate_ctrl = zl10353_i2c_gate_ctrl, |
c10d14d6 | 659 | .write = zl10353_write, |
780dfef3 | 660 | |
4e4d2bcf MCC |
661 | .set_frontend = zl10353_set_parameters, |
662 | .get_frontend = zl10353_get_parameters, | |
780dfef3 CP |
663 | .get_tune_settings = zl10353_get_tune_settings, |
664 | ||
665 | .read_status = zl10353_read_status, | |
67b60aad CP |
666 | .read_ber = zl10353_read_ber, |
667 | .read_signal_strength = zl10353_read_signal_strength, | |
780dfef3 | 668 | .read_snr = zl10353_read_snr, |
67b60aad | 669 | .read_ucblocks = zl10353_read_ucblocks, |
780dfef3 CP |
670 | }; |
671 | ||
f7f57770 AP |
672 | module_param(debug, int, 0644); |
673 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | |
674 | ||
780dfef3 CP |
675 | module_param(debug_regs, int, 0644); |
676 | MODULE_PARM_DESC(debug_regs, "Turn on/off frontend register dumps (default:off)."); | |
677 | ||
678 | MODULE_DESCRIPTION("Zarlink ZL10353 DVB-T demodulator driver"); | |
679 | MODULE_AUTHOR("Chris Pascoe"); | |
680 | MODULE_LICENSE("GPL"); | |
681 | ||
682 | EXPORT_SYMBOL(zl10353_attach); |