Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | Driver for Philips TDA8083 based QPSK Demodulator | |
3 | ||
4 | Copyright (C) 2001 Convergence Integrated Media GmbH | |
5 | ||
6 | written by Ralph Metzler <ralph@convergence.de> | |
7 | ||
8 | adoption to the new DVB frontend API and diagnostic ioctl's | |
9 | by Holger Waechtler <holger@convergence.de> | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
25 | */ | |
26 | ||
27 | #include <linux/init.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/module.h> | |
1da177e4 LT |
30 | #include <linux/string.h> |
31 | #include <linux/slab.h> | |
4e57b681 | 32 | #include <linux/jiffies.h> |
1da177e4 LT |
33 | #include "dvb_frontend.h" |
34 | #include "tda8083.h" | |
35 | ||
36 | ||
37 | struct tda8083_state { | |
38 | struct i2c_adapter* i2c; | |
1da177e4 LT |
39 | /* configuration settings */ |
40 | const struct tda8083_config* config; | |
41 | struct dvb_frontend frontend; | |
42 | }; | |
43 | ||
44 | static int debug; | |
45 | #define dprintk(args...) \ | |
46 | do { \ | |
47 | if (debug) printk(KERN_DEBUG "tda8083: " args); \ | |
48 | } while (0) | |
49 | ||
50 | ||
51 | static u8 tda8083_init_tab [] = { | |
52 | 0x04, 0x00, 0x4a, 0x79, 0x04, 0x00, 0xff, 0xea, | |
53 | 0x48, 0x42, 0x79, 0x60, 0x70, 0x52, 0x9a, 0x10, | |
54 | 0x0e, 0x10, 0xf2, 0xa7, 0x93, 0x0b, 0x05, 0xc8, | |
55 | 0x9d, 0x00, 0x42, 0x80, 0x00, 0x60, 0x40, 0x00, | |
56 | 0x00, 0x75, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, | |
57 | 0x00, 0x00, 0x00, 0x00 | |
58 | }; | |
59 | ||
60 | ||
61 | static int tda8083_writereg (struct tda8083_state* state, u8 reg, u8 data) | |
62 | { | |
63 | int ret; | |
64 | u8 buf [] = { reg, data }; | |
65 | struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; | |
66 | ||
9101e622 | 67 | ret = i2c_transfer(state->i2c, &msg, 1); |
1da177e4 | 68 | |
9101e622 MCC |
69 | if (ret != 1) |
70 | dprintk ("%s: writereg error (reg %02x, ret == %i)\n", | |
271ddbf7 | 71 | __func__, reg, ret); |
1da177e4 | 72 | |
9101e622 | 73 | return (ret != 1) ? -1 : 0; |
1da177e4 LT |
74 | } |
75 | ||
76 | static int tda8083_readregs (struct tda8083_state* state, u8 reg1, u8 *b, u8 len) | |
77 | { | |
78 | int ret; | |
79 | struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = ®1, .len = 1 }, | |
80 | { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } }; | |
81 | ||
82 | ret = i2c_transfer(state->i2c, msg, 2); | |
83 | ||
84 | if (ret != 2) | |
85 | dprintk ("%s: readreg error (reg %02x, ret == %i)\n", | |
271ddbf7 | 86 | __func__, reg1, ret); |
1da177e4 | 87 | |
9101e622 | 88 | return ret == 2 ? 0 : -1; |
1da177e4 LT |
89 | } |
90 | ||
91 | static inline u8 tda8083_readreg (struct tda8083_state* state, u8 reg) | |
92 | { | |
93 | u8 val; | |
94 | ||
95 | tda8083_readregs (state, reg, &val, 1); | |
96 | ||
97 | return val; | |
98 | } | |
99 | ||
100 | static int tda8083_set_inversion (struct tda8083_state* state, fe_spectral_inversion_t inversion) | |
101 | { | |
102 | /* XXX FIXME: implement other modes than FEC_AUTO */ | |
103 | if (inversion == INVERSION_AUTO) | |
104 | return 0; | |
105 | ||
106 | return -EINVAL; | |
107 | } | |
108 | ||
109 | static int tda8083_set_fec (struct tda8083_state* state, fe_code_rate_t fec) | |
110 | { | |
111 | if (fec == FEC_AUTO) | |
112 | return tda8083_writereg (state, 0x07, 0xff); | |
113 | ||
114 | if (fec >= FEC_1_2 && fec <= FEC_8_9) | |
115 | return tda8083_writereg (state, 0x07, 1 << (FEC_8_9 - fec)); | |
116 | ||
117 | return -EINVAL; | |
118 | } | |
119 | ||
120 | static fe_code_rate_t tda8083_get_fec (struct tda8083_state* state) | |
121 | { | |
122 | u8 index; | |
123 | static fe_code_rate_t fec_tab [] = { FEC_8_9, FEC_1_2, FEC_2_3, FEC_3_4, | |
124 | FEC_4_5, FEC_5_6, FEC_6_7, FEC_7_8 }; | |
125 | ||
126 | index = tda8083_readreg(state, 0x0e) & 0x07; | |
127 | ||
128 | return fec_tab [index]; | |
129 | } | |
130 | ||
131 | static int tda8083_set_symbolrate (struct tda8083_state* state, u32 srate) | |
132 | { | |
9101e622 | 133 | u32 ratio; |
1da177e4 LT |
134 | u32 tmp; |
135 | u8 filter; | |
136 | ||
137 | if (srate > 32000000) | |
9101e622 MCC |
138 | srate = 32000000; |
139 | if (srate < 500000) | |
140 | srate = 500000; | |
1da177e4 LT |
141 | |
142 | filter = 0; | |
143 | if (srate < 24000000) | |
144 | filter = 2; | |
145 | if (srate < 16000000) | |
146 | filter = 3; | |
147 | ||
148 | tmp = 31250 << 16; | |
149 | ratio = tmp / srate; | |
150 | ||
151 | tmp = (tmp % srate) << 8; | |
152 | ratio = (ratio << 8) + tmp / srate; | |
153 | ||
154 | tmp = (tmp % srate) << 8; | |
155 | ratio = (ratio << 8) + tmp / srate; | |
156 | ||
157 | dprintk("tda8083: ratio == %08x\n", (unsigned int) ratio); | |
158 | ||
159 | tda8083_writereg (state, 0x05, filter); | |
160 | tda8083_writereg (state, 0x02, (ratio >> 16) & 0xff); | |
161 | tda8083_writereg (state, 0x03, (ratio >> 8) & 0xff); | |
162 | tda8083_writereg (state, 0x04, (ratio ) & 0xff); | |
163 | ||
164 | tda8083_writereg (state, 0x00, 0x3c); | |
165 | tda8083_writereg (state, 0x00, 0x04); | |
166 | ||
167 | return 1; | |
168 | } | |
169 | ||
170 | static void tda8083_wait_diseqc_fifo (struct tda8083_state* state, int timeout) | |
171 | { | |
172 | unsigned long start = jiffies; | |
173 | ||
174 | while (jiffies - start < timeout && | |
9101e622 | 175 | !(tda8083_readreg(state, 0x02) & 0x80)) |
1da177e4 LT |
176 | { |
177 | msleep(50); | |
c2c1b415 | 178 | } |
1da177e4 LT |
179 | } |
180 | ||
181 | static int tda8083_set_tone (struct tda8083_state* state, fe_sec_tone_mode_t tone) | |
182 | { | |
183 | tda8083_writereg (state, 0x26, 0xf1); | |
184 | ||
185 | switch (tone) { | |
186 | case SEC_TONE_OFF: | |
187 | return tda8083_writereg (state, 0x29, 0x00); | |
188 | case SEC_TONE_ON: | |
189 | return tda8083_writereg (state, 0x29, 0x80); | |
190 | default: | |
191 | return -EINVAL; | |
2028c71d | 192 | } |
1da177e4 LT |
193 | } |
194 | ||
195 | static int tda8083_set_voltage (struct tda8083_state* state, fe_sec_voltage_t voltage) | |
196 | { | |
197 | switch (voltage) { | |
198 | case SEC_VOLTAGE_13: | |
199 | return tda8083_writereg (state, 0x20, 0x00); | |
200 | case SEC_VOLTAGE_18: | |
201 | return tda8083_writereg (state, 0x20, 0x11); | |
202 | default: | |
203 | return -EINVAL; | |
2028c71d | 204 | } |
1da177e4 LT |
205 | } |
206 | ||
207 | static int tda8083_send_diseqc_burst (struct tda8083_state* state, fe_sec_mini_cmd_t burst) | |
208 | { | |
209 | switch (burst) { | |
210 | case SEC_MINI_A: | |
211 | tda8083_writereg (state, 0x29, (5 << 2)); /* send burst A */ | |
212 | break; | |
213 | case SEC_MINI_B: | |
214 | tda8083_writereg (state, 0x29, (7 << 2)); /* send B */ | |
215 | break; | |
216 | default: | |
217 | return -EINVAL; | |
c2c1b415 | 218 | } |
1da177e4 LT |
219 | |
220 | tda8083_wait_diseqc_fifo (state, 100); | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | static int tda8083_send_diseqc_msg (struct dvb_frontend* fe, | |
226 | struct dvb_diseqc_master_cmd *m) | |
227 | { | |
b8742700 | 228 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
229 | int i; |
230 | ||
231 | tda8083_writereg (state, 0x29, (m->msg_len - 3) | (1 << 2)); /* enable */ | |
232 | ||
233 | for (i=0; i<m->msg_len; i++) | |
234 | tda8083_writereg (state, 0x23 + i, m->msg[i]); | |
235 | ||
236 | tda8083_writereg (state, 0x29, (m->msg_len - 3) | (3 << 2)); /* send!! */ | |
237 | ||
238 | tda8083_wait_diseqc_fifo (state, 100); | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | static int tda8083_read_status(struct dvb_frontend* fe, fe_status_t* status) | |
244 | { | |
b8742700 | 245 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
246 | |
247 | u8 signal = ~tda8083_readreg (state, 0x01); | |
248 | u8 sync = tda8083_readreg (state, 0x02); | |
249 | ||
250 | *status = 0; | |
251 | ||
252 | if (signal > 10) | |
253 | *status |= FE_HAS_SIGNAL; | |
254 | ||
255 | if (sync & 0x01) | |
256 | *status |= FE_HAS_CARRIER; | |
257 | ||
258 | if (sync & 0x02) | |
259 | *status |= FE_HAS_VITERBI; | |
260 | ||
261 | if (sync & 0x10) | |
262 | *status |= FE_HAS_SYNC; | |
263 | ||
dbb2e639 CH |
264 | if (sync & 0x20) /* frontend can not lock */ |
265 | *status |= FE_TIMEDOUT; | |
266 | ||
1da177e4 LT |
267 | if ((sync & 0x1f) == 0x1f) |
268 | *status |= FE_HAS_LOCK; | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
dbb2e639 CH |
273 | static int tda8083_read_ber(struct dvb_frontend* fe, u32* ber) |
274 | { | |
275 | struct tda8083_state* state = fe->demodulator_priv; | |
276 | int ret; | |
277 | u8 buf[3]; | |
278 | ||
279 | if ((ret = tda8083_readregs(state, 0x0b, buf, sizeof(buf)))) | |
280 | return ret; | |
281 | ||
282 | *ber = ((buf[0] & 0x1f) << 16) | (buf[1] << 8) | buf[2]; | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
1da177e4 LT |
287 | static int tda8083_read_signal_strength(struct dvb_frontend* fe, u16* strength) |
288 | { | |
b8742700 | 289 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
290 | |
291 | u8 signal = ~tda8083_readreg (state, 0x01); | |
292 | *strength = (signal << 8) | signal; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | static int tda8083_read_snr(struct dvb_frontend* fe, u16* snr) | |
298 | { | |
b8742700 | 299 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
300 | |
301 | u8 _snr = tda8083_readreg (state, 0x08); | |
302 | *snr = (_snr << 8) | _snr; | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
dbb2e639 CH |
307 | static int tda8083_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
308 | { | |
309 | struct tda8083_state* state = fe->demodulator_priv; | |
310 | ||
311 | *ucblocks = tda8083_readreg(state, 0x0f); | |
312 | if (*ucblocks == 0xff) | |
313 | *ucblocks = 0xffffffff; | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
042e5eb7 | 318 | static int tda8083_set_frontend(struct dvb_frontend *fe) |
1da177e4 | 319 | { |
042e5eb7 | 320 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
b8742700 | 321 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 | 322 | |
dea74869 | 323 | if (fe->ops.tuner_ops.set_params) { |
14d24d14 | 324 | fe->ops.tuner_ops.set_params(fe); |
dea74869 | 325 | if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); |
d21eac03 AQ |
326 | } |
327 | ||
1da177e4 | 328 | tda8083_set_inversion (state, p->inversion); |
042e5eb7 MCC |
329 | tda8083_set_fec(state, p->fec_inner); |
330 | tda8083_set_symbolrate(state, p->symbol_rate); | |
1da177e4 LT |
331 | |
332 | tda8083_writereg (state, 0x00, 0x3c); | |
333 | tda8083_writereg (state, 0x00, 0x04); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
7c61d80a | 338 | static int tda8083_get_frontend(struct dvb_frontend *fe) |
1da177e4 | 339 | { |
7c61d80a | 340 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
b8742700 | 341 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
342 | |
343 | /* FIXME: get symbolrate & frequency offset...*/ | |
344 | /*p->frequency = ???;*/ | |
345 | p->inversion = (tda8083_readreg (state, 0x0e) & 0x80) ? | |
346 | INVERSION_ON : INVERSION_OFF; | |
042e5eb7 MCC |
347 | p->fec_inner = tda8083_get_fec(state); |
348 | /*p->symbol_rate = tda8083_get_symbolrate (state);*/ | |
1da177e4 LT |
349 | |
350 | return 0; | |
351 | } | |
352 | ||
353 | static int tda8083_sleep(struct dvb_frontend* fe) | |
354 | { | |
b8742700 | 355 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
356 | |
357 | tda8083_writereg (state, 0x00, 0x02); | |
358 | return 0; | |
359 | } | |
360 | ||
361 | static int tda8083_init(struct dvb_frontend* fe) | |
362 | { | |
b8742700 | 363 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
364 | int i; |
365 | ||
366 | for (i=0; i<44; i++) | |
367 | tda8083_writereg (state, i, tda8083_init_tab[i]); | |
368 | ||
1da177e4 LT |
369 | tda8083_writereg (state, 0x00, 0x3c); |
370 | tda8083_writereg (state, 0x00, 0x04); | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
375 | static int tda8083_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst) | |
376 | { | |
b8742700 | 377 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
378 | |
379 | tda8083_send_diseqc_burst (state, burst); | |
380 | tda8083_writereg (state, 0x00, 0x3c); | |
381 | tda8083_writereg (state, 0x00, 0x04); | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static int tda8083_diseqc_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) | |
387 | { | |
b8742700 | 388 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
389 | |
390 | tda8083_set_tone (state, tone); | |
391 | tda8083_writereg (state, 0x00, 0x3c); | |
392 | tda8083_writereg (state, 0x00, 0x04); | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | static int tda8083_diseqc_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) | |
398 | { | |
b8742700 | 399 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
400 | |
401 | tda8083_set_voltage (state, voltage); | |
402 | tda8083_writereg (state, 0x00, 0x3c); | |
403 | tda8083_writereg (state, 0x00, 0x04); | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | static void tda8083_release(struct dvb_frontend* fe) | |
409 | { | |
b8742700 | 410 | struct tda8083_state* state = fe->demodulator_priv; |
1da177e4 LT |
411 | kfree(state); |
412 | } | |
413 | ||
414 | static struct dvb_frontend_ops tda8083_ops; | |
415 | ||
416 | struct dvb_frontend* tda8083_attach(const struct tda8083_config* config, | |
417 | struct i2c_adapter* i2c) | |
418 | { | |
419 | struct tda8083_state* state = NULL; | |
420 | ||
421 | /* allocate memory for the internal state */ | |
084e24ac | 422 | state = kzalloc(sizeof(struct tda8083_state), GFP_KERNEL); |
1da177e4 LT |
423 | if (state == NULL) goto error; |
424 | ||
425 | /* setup the state */ | |
426 | state->config = config; | |
427 | state->i2c = i2c; | |
1da177e4 LT |
428 | |
429 | /* check if the demod is there */ | |
430 | if ((tda8083_readreg(state, 0x00)) != 0x05) goto error; | |
431 | ||
432 | /* create dvb_frontend */ | |
dea74869 | 433 | memcpy(&state->frontend.ops, &tda8083_ops, sizeof(struct dvb_frontend_ops)); |
1da177e4 LT |
434 | state->frontend.demodulator_priv = state; |
435 | return &state->frontend; | |
436 | ||
437 | error: | |
438 | kfree(state); | |
439 | return NULL; | |
440 | } | |
441 | ||
442 | static struct dvb_frontend_ops tda8083_ops = { | |
042e5eb7 | 443 | .delsys = { SYS_DVBS }, |
1da177e4 LT |
444 | .info = { |
445 | .name = "Philips TDA8083 DVB-S", | |
4f76b672 OE |
446 | .frequency_min = 920000, /* TDA8060 */ |
447 | .frequency_max = 2200000, /* TDA8060 */ | |
1da177e4 LT |
448 | .frequency_stepsize = 125, /* kHz for QPSK frontends */ |
449 | /* .frequency_tolerance = ???,*/ | |
4f76b672 OE |
450 | .symbol_rate_min = 12000000, |
451 | .symbol_rate_max = 30000000, | |
1da177e4 LT |
452 | /* .symbol_rate_tolerance = ???,*/ |
453 | .caps = FE_CAN_INVERSION_AUTO | | |
454 | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
455 | FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | | |
456 | FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO | | |
457 | FE_CAN_QPSK | FE_CAN_MUTE_TS | |
458 | }, | |
459 | ||
460 | .release = tda8083_release, | |
461 | ||
462 | .init = tda8083_init, | |
463 | .sleep = tda8083_sleep, | |
464 | ||
042e5eb7 MCC |
465 | .set_frontend = tda8083_set_frontend, |
466 | .get_frontend = tda8083_get_frontend, | |
1da177e4 LT |
467 | |
468 | .read_status = tda8083_read_status, | |
469 | .read_signal_strength = tda8083_read_signal_strength, | |
470 | .read_snr = tda8083_read_snr, | |
dbb2e639 CH |
471 | .read_ber = tda8083_read_ber, |
472 | .read_ucblocks = tda8083_read_ucblocks, | |
1da177e4 LT |
473 | |
474 | .diseqc_send_master_cmd = tda8083_send_diseqc_msg, | |
475 | .diseqc_send_burst = tda8083_diseqc_send_burst, | |
476 | .set_tone = tda8083_diseqc_set_tone, | |
477 | .set_voltage = tda8083_diseqc_set_voltage, | |
478 | }; | |
479 | ||
480 | module_param(debug, int, 0644); | |
481 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | |
482 | ||
483 | MODULE_DESCRIPTION("Philips TDA8083 DVB-S Demodulator"); | |
484 | MODULE_AUTHOR("Ralph Metzler, Holger Waechtler"); | |
485 | MODULE_LICENSE("GPL"); | |
486 | ||
487 | EXPORT_SYMBOL(tda8083_attach); |