1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | Driver for ST STV0299 demodulator |
4 | |
5 | Copyright (C) 2001-2002 Convergence Integrated Media GmbH |
6 | <ralph@convergence.de>, |
7 | <holger@convergence.de>, |
8 | <js@convergence.de> |
9 | |
10 | |
11 | Philips SU1278/SH |
12 | |
13 | Copyright (C) 2002 by Peter Schildmann <peter.schildmann@web.de> |
14 | |
15 | |
16 | LG TDQF-S001F |
17 | |
18 | Copyright (C) 2002 Felix Domke <tmbinc@elitedvb.net> |
19 | & Andreas Oberritter <obi@linuxtv.org> |
20 | |
21 | |
22 | Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B |
23 | |
24 | Copyright (C) 2003 Vadim Catana <skystar@moldova.cc>: |
25 | |
26 | Support for Philips SU1278 on Technotrend hardware |
27 | |
28 | Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net> |
29 | |
30 | |
31 | */ |
32 | |
33 | #include <linux/init.h> |
34 | #include <linux/kernel.h> |
35 | #include <linux/ktime.h> |
36 | #include <linux/module.h> |
37 | #include <linux/string.h> |
38 | #include <linux/slab.h> |
39 | #include <linux/jiffies.h> |
40 | #include <asm/div64.h> |
41 | |
42 | #include <media/dvb_frontend.h> |
43 | #include "stv0299.h" |
44 | |
45 | struct stv0299_state { |
46 | struct i2c_adapter* i2c; |
47 | const struct stv0299_config* config; |
48 | struct dvb_frontend frontend; |
49 | |
50 | u8 initialised:1; |
51 | u32 tuner_frequency; |
52 | u32 symbol_rate; |
53 | enum fe_code_rate fec_inner; |
54 | int errmode; |
55 | u32 ucblocks; |
56 | u8 mcr_reg; |
57 | }; |
58 | |
59 | #define STATUS_BER 0 |
60 | #define STATUS_UCBLOCKS 1 |
61 | |
62 | static int debug; |
63 | static int debug_legacy_dish_switch; |
64 | #define dprintk(args...) \ |
65 | do { \ |
66 | if (debug) printk(KERN_DEBUG "stv0299: " args); \ |
67 | } while (0) |
68 | |
69 | |
70 | static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data) |
71 | { |
72 | int ret; |
73 | u8 buf [] = { reg, data }; |
74 | struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; |
75 | |
76 | ret = i2c_transfer (adap: state->i2c, msgs: &msg, num: 1); |
77 | |
78 | if (ret != 1) |
79 | dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n" , |
80 | __func__, reg, data, ret); |
81 | |
82 | return (ret != 1) ? -EREMOTEIO : 0; |
83 | } |
84 | |
85 | static int stv0299_write(struct dvb_frontend* fe, const u8 buf[], int len) |
86 | { |
87 | struct stv0299_state* state = fe->demodulator_priv; |
88 | |
89 | if (len != 2) |
90 | return -EINVAL; |
91 | |
92 | return stv0299_writeregI(state, reg: buf[0], data: buf[1]); |
93 | } |
94 | |
95 | static u8 stv0299_readreg (struct stv0299_state* state, u8 reg) |
96 | { |
97 | int ret; |
98 | u8 b0 [] = { reg }; |
99 | u8 b1 [] = { 0 }; |
100 | struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 }, |
101 | { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; |
102 | |
103 | ret = i2c_transfer (adap: state->i2c, msgs: msg, num: 2); |
104 | |
105 | if (ret != 2) |
106 | dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n" , |
107 | __func__, reg, ret); |
108 | |
109 | return b1[0]; |
110 | } |
111 | |
112 | static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len) |
113 | { |
114 | int ret; |
115 | struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = ®1, .len = 1 }, |
116 | { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } }; |
117 | |
118 | ret = i2c_transfer (adap: state->i2c, msgs: msg, num: 2); |
119 | |
120 | if (ret != 2) |
121 | dprintk("%s: readreg error (ret == %i)\n" , __func__, ret); |
122 | |
123 | return ret == 2 ? 0 : ret; |
124 | } |
125 | |
126 | static int stv0299_set_FEC(struct stv0299_state *state, enum fe_code_rate fec) |
127 | { |
128 | dprintk ("%s\n" , __func__); |
129 | |
130 | switch (fec) { |
131 | case FEC_AUTO: |
132 | { |
133 | return stv0299_writeregI (state, reg: 0x31, data: 0x1f); |
134 | } |
135 | case FEC_1_2: |
136 | { |
137 | return stv0299_writeregI (state, reg: 0x31, data: 0x01); |
138 | } |
139 | case FEC_2_3: |
140 | { |
141 | return stv0299_writeregI (state, reg: 0x31, data: 0x02); |
142 | } |
143 | case FEC_3_4: |
144 | { |
145 | return stv0299_writeregI (state, reg: 0x31, data: 0x04); |
146 | } |
147 | case FEC_5_6: |
148 | { |
149 | return stv0299_writeregI (state, reg: 0x31, data: 0x08); |
150 | } |
151 | case FEC_7_8: |
152 | { |
153 | return stv0299_writeregI (state, reg: 0x31, data: 0x10); |
154 | } |
155 | default: |
156 | { |
157 | return -EINVAL; |
158 | } |
159 | } |
160 | } |
161 | |
162 | static enum fe_code_rate stv0299_get_fec(struct stv0299_state *state) |
163 | { |
164 | static const enum fe_code_rate fec_tab[] = { |
165 | FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_1_2 |
166 | }; |
167 | u8 index; |
168 | |
169 | dprintk ("%s\n" , __func__); |
170 | |
171 | index = stv0299_readreg (state, reg: 0x1b); |
172 | index &= 0x7; |
173 | |
174 | if (index > 4) |
175 | return FEC_AUTO; |
176 | |
177 | return fec_tab [index]; |
178 | } |
179 | |
180 | static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout) |
181 | { |
182 | unsigned long start = jiffies; |
183 | |
184 | dprintk ("%s\n" , __func__); |
185 | |
186 | while (stv0299_readreg(state, reg: 0x0a) & 1) { |
187 | if (time_is_before_jiffies(start + timeout)) { |
188 | dprintk ("%s: timeout!!\n" , __func__); |
189 | return -ETIMEDOUT; |
190 | } |
191 | msleep(msecs: 10); |
192 | } |
193 | |
194 | return 0; |
195 | } |
196 | |
197 | static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout) |
198 | { |
199 | unsigned long start = jiffies; |
200 | |
201 | dprintk ("%s\n" , __func__); |
202 | |
203 | while ((stv0299_readreg(state, reg: 0x0a) & 3) != 2 ) { |
204 | if (time_is_before_jiffies(start + timeout)) { |
205 | dprintk ("%s: timeout!!\n" , __func__); |
206 | return -ETIMEDOUT; |
207 | } |
208 | msleep(msecs: 10); |
209 | } |
210 | |
211 | return 0; |
212 | } |
213 | |
214 | static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate) |
215 | { |
216 | struct stv0299_state* state = fe->demodulator_priv; |
217 | u64 big = srate; |
218 | u32 ratio; |
219 | |
220 | // check rate is within limits |
221 | if ((srate < 1000000) || (srate > 45000000)) return -EINVAL; |
222 | |
223 | // calculate value to program |
224 | big = big << 20; |
225 | big += (state->config->mclk-1); // round correctly |
226 | do_div(big, state->config->mclk); |
227 | ratio = big << 4; |
228 | |
229 | return state->config->set_symbol_rate(fe, srate, ratio); |
230 | } |
231 | |
232 | static int stv0299_get_symbolrate (struct stv0299_state* state) |
233 | { |
234 | u32 Mclk = state->config->mclk / 4096L; |
235 | u32 srate; |
236 | s32 offset; |
237 | u8 sfr[3]; |
238 | s8 rtf; |
239 | |
240 | dprintk ("%s\n" , __func__); |
241 | |
242 | stv0299_readregs (state, reg1: 0x1f, b: sfr, len: 3); |
243 | stv0299_readregs (state, reg1: 0x1a, b: (u8 *)&rtf, len: 1); |
244 | |
245 | srate = (sfr[0] << 8) | sfr[1]; |
246 | srate *= Mclk; |
247 | srate /= 16; |
248 | srate += (sfr[2] >> 4) * Mclk / 256; |
249 | offset = (s32) rtf * (srate / 4096L); |
250 | offset /= 128; |
251 | |
252 | dprintk ("%s : srate = %i\n" , __func__, srate); |
253 | dprintk ("%s : ofset = %i\n" , __func__, offset); |
254 | |
255 | srate += offset; |
256 | |
257 | srate += 1000; |
258 | srate /= 2000; |
259 | srate *= 2000; |
260 | |
261 | return srate; |
262 | } |
263 | |
264 | static int stv0299_send_diseqc_msg (struct dvb_frontend* fe, |
265 | struct dvb_diseqc_master_cmd *m) |
266 | { |
267 | struct stv0299_state* state = fe->demodulator_priv; |
268 | u8 val; |
269 | int i; |
270 | |
271 | dprintk ("%s\n" , __func__); |
272 | |
273 | if (stv0299_wait_diseqc_idle (state, timeout: 100) < 0) |
274 | return -ETIMEDOUT; |
275 | |
276 | val = stv0299_readreg (state, reg: 0x08); |
277 | |
278 | if (stv0299_writeregI (state, reg: 0x08, data: (val & ~0x7) | 0x6)) /* DiSEqC mode */ |
279 | return -EREMOTEIO; |
280 | |
281 | for (i=0; i<m->msg_len; i++) { |
282 | if (stv0299_wait_diseqc_fifo (state, timeout: 100) < 0) |
283 | return -ETIMEDOUT; |
284 | |
285 | if (stv0299_writeregI (state, reg: 0x09, data: m->msg[i])) |
286 | return -EREMOTEIO; |
287 | } |
288 | |
289 | if (stv0299_wait_diseqc_idle (state, timeout: 100) < 0) |
290 | return -ETIMEDOUT; |
291 | |
292 | return 0; |
293 | } |
294 | |
295 | static int stv0299_send_diseqc_burst(struct dvb_frontend *fe, |
296 | enum fe_sec_mini_cmd burst) |
297 | { |
298 | struct stv0299_state* state = fe->demodulator_priv; |
299 | u8 val; |
300 | |
301 | dprintk ("%s\n" , __func__); |
302 | |
303 | if (stv0299_wait_diseqc_idle (state, timeout: 100) < 0) |
304 | return -ETIMEDOUT; |
305 | |
306 | val = stv0299_readreg (state, reg: 0x08); |
307 | |
308 | if (stv0299_writeregI (state, reg: 0x08, data: (val & ~0x7) | 0x2)) /* burst mode */ |
309 | return -EREMOTEIO; |
310 | |
311 | if (stv0299_writeregI (state, reg: 0x09, data: burst == SEC_MINI_A ? 0x00 : 0xff)) |
312 | return -EREMOTEIO; |
313 | |
314 | if (stv0299_wait_diseqc_idle (state, timeout: 100) < 0) |
315 | return -ETIMEDOUT; |
316 | |
317 | if (stv0299_writeregI (state, reg: 0x08, data: val)) |
318 | return -EREMOTEIO; |
319 | |
320 | return 0; |
321 | } |
322 | |
323 | static int stv0299_set_tone(struct dvb_frontend *fe, |
324 | enum fe_sec_tone_mode tone) |
325 | { |
326 | struct stv0299_state* state = fe->demodulator_priv; |
327 | u8 val; |
328 | |
329 | if (stv0299_wait_diseqc_idle (state, timeout: 100) < 0) |
330 | return -ETIMEDOUT; |
331 | |
332 | val = stv0299_readreg (state, reg: 0x08); |
333 | |
334 | switch (tone) { |
335 | case SEC_TONE_ON: |
336 | return stv0299_writeregI (state, reg: 0x08, data: val | 0x3); |
337 | |
338 | case SEC_TONE_OFF: |
339 | return stv0299_writeregI (state, reg: 0x08, data: (val & ~0x3) | 0x02); |
340 | |
341 | default: |
342 | return -EINVAL; |
343 | } |
344 | } |
345 | |
346 | static int stv0299_set_voltage(struct dvb_frontend *fe, |
347 | enum fe_sec_voltage voltage) |
348 | { |
349 | struct stv0299_state* state = fe->demodulator_priv; |
350 | u8 reg0x08; |
351 | u8 reg0x0c; |
352 | |
353 | dprintk("%s: %s\n" , __func__, |
354 | voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : |
355 | voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??" ); |
356 | |
357 | reg0x08 = stv0299_readreg (state, reg: 0x08); |
358 | reg0x0c = stv0299_readreg (state, reg: 0x0c); |
359 | |
360 | /* |
361 | * H/V switching over OP0, OP1 and OP2 are LNB power enable bits |
362 | */ |
363 | reg0x0c &= 0x0f; |
364 | reg0x08 = (reg0x08 & 0x3f) | (state->config->lock_output << 6); |
365 | |
366 | switch (voltage) { |
367 | case SEC_VOLTAGE_13: |
368 | if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) |
369 | reg0x0c |= 0x10; /* OP1 off, OP0 on */ |
370 | else |
371 | reg0x0c |= 0x40; /* OP1 on, OP0 off */ |
372 | break; |
373 | case SEC_VOLTAGE_18: |
374 | reg0x0c |= 0x50; /* OP1 on, OP0 on */ |
375 | break; |
376 | case SEC_VOLTAGE_OFF: |
377 | /* LNB power off! */ |
378 | reg0x08 = 0x00; |
379 | reg0x0c = 0x00; |
380 | break; |
381 | default: |
382 | return -EINVAL; |
383 | } |
384 | |
385 | if (state->config->op0_off) |
386 | reg0x0c &= ~0x10; |
387 | |
388 | stv0299_writeregI(state, reg: 0x08, data: reg0x08); |
389 | return stv0299_writeregI(state, reg: 0x0c, data: reg0x0c); |
390 | } |
391 | |
392 | static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long cmd) |
393 | { |
394 | struct stv0299_state* state = fe->demodulator_priv; |
395 | u8 reg0x08; |
396 | u8 reg0x0c; |
397 | u8 lv_mask = 0x40; |
398 | u8 last = 1; |
399 | int i; |
400 | ktime_t nexttime; |
401 | ktime_t tv[10]; |
402 | |
403 | reg0x08 = stv0299_readreg (state, reg: 0x08); |
404 | reg0x0c = stv0299_readreg (state, reg: 0x0c); |
405 | reg0x0c &= 0x0f; |
406 | stv0299_writeregI (state, reg: 0x08, data: (reg0x08 & 0x3f) | (state->config->lock_output << 6)); |
407 | if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) |
408 | lv_mask = 0x10; |
409 | |
410 | cmd = cmd << 1; |
411 | if (debug_legacy_dish_switch) |
412 | printk ("%s switch command: 0x%04lx\n" ,__func__, cmd); |
413 | |
414 | nexttime = ktime_get_boottime(); |
415 | if (debug_legacy_dish_switch) |
416 | tv[0] = nexttime; |
417 | stv0299_writeregI (state, reg: 0x0c, data: reg0x0c | 0x50); /* set LNB to 18V */ |
418 | |
419 | dvb_frontend_sleep_until(waketime: &nexttime, add_usec: 32000); |
420 | |
421 | for (i=0; i<9; i++) { |
422 | if (debug_legacy_dish_switch) |
423 | tv[i+1] = ktime_get_boottime(); |
424 | if((cmd & 0x01) != last) { |
425 | /* set voltage to (last ? 13V : 18V) */ |
426 | stv0299_writeregI (state, reg: 0x0c, data: reg0x0c | (last ? lv_mask : 0x50)); |
427 | last = (last) ? 0 : 1; |
428 | } |
429 | |
430 | cmd = cmd >> 1; |
431 | |
432 | if (i != 8) |
433 | dvb_frontend_sleep_until(waketime: &nexttime, add_usec: 8000); |
434 | } |
435 | if (debug_legacy_dish_switch) { |
436 | printk ("%s(%d): switch delay (should be 32k followed by all 8k\n" , |
437 | __func__, fe->dvb->num); |
438 | for (i = 1; i < 10; i++) |
439 | printk("%d: %d\n" , i, |
440 | (int) ktime_us_delta(tv[i], tv[i-1])); |
441 | } |
442 | |
443 | return 0; |
444 | } |
445 | |
446 | static int stv0299_init (struct dvb_frontend* fe) |
447 | { |
448 | struct stv0299_state* state = fe->demodulator_priv; |
449 | int i; |
450 | u8 reg; |
451 | u8 val; |
452 | |
453 | dprintk("stv0299: init chip\n" ); |
454 | |
455 | stv0299_writeregI(state, reg: 0x02, data: 0x30 | state->mcr_reg); |
456 | msleep(msecs: 50); |
457 | |
458 | for (i = 0; ; i += 2) { |
459 | reg = state->config->inittab[i]; |
460 | val = state->config->inittab[i+1]; |
461 | if (reg == 0xff && val == 0xff) |
462 | break; |
463 | if (reg == 0x0c && state->config->op0_off) |
464 | val &= ~0x10; |
465 | if (reg == 0x2) |
466 | state->mcr_reg = val & 0xf; |
467 | stv0299_writeregI(state, reg, data: val); |
468 | } |
469 | |
470 | return 0; |
471 | } |
472 | |
473 | static int stv0299_read_status(struct dvb_frontend *fe, |
474 | enum fe_status *status) |
475 | { |
476 | struct stv0299_state* state = fe->demodulator_priv; |
477 | |
478 | u8 signal = 0xff - stv0299_readreg (state, reg: 0x18); |
479 | u8 sync = stv0299_readreg (state, reg: 0x1b); |
480 | |
481 | dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n" , __func__, sync); |
482 | *status = 0; |
483 | |
484 | if (signal > 10) |
485 | *status |= FE_HAS_SIGNAL; |
486 | |
487 | if (sync & 0x80) |
488 | *status |= FE_HAS_CARRIER; |
489 | |
490 | if (sync & 0x10) |
491 | *status |= FE_HAS_VITERBI; |
492 | |
493 | if (sync & 0x08) |
494 | *status |= FE_HAS_SYNC; |
495 | |
496 | if ((sync & 0x98) == 0x98) |
497 | *status |= FE_HAS_LOCK; |
498 | |
499 | return 0; |
500 | } |
501 | |
502 | static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber) |
503 | { |
504 | struct stv0299_state* state = fe->demodulator_priv; |
505 | |
506 | if (state->errmode != STATUS_BER) |
507 | return -ENOSYS; |
508 | |
509 | *ber = stv0299_readreg(state, reg: 0x1e) | (stv0299_readreg(state, reg: 0x1d) << 8); |
510 | |
511 | return 0; |
512 | } |
513 | |
514 | static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength) |
515 | { |
516 | struct stv0299_state* state = fe->demodulator_priv; |
517 | |
518 | s32 signal = 0xffff - ((stv0299_readreg (state, reg: 0x18) << 8) |
519 | | stv0299_readreg (state, reg: 0x19)); |
520 | |
521 | dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n" , __func__, |
522 | stv0299_readreg (state, 0x18), |
523 | stv0299_readreg (state, 0x19), (int) signal); |
524 | |
525 | signal = signal * 5 / 4; |
526 | *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; |
527 | |
528 | return 0; |
529 | } |
530 | |
531 | static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr) |
532 | { |
533 | struct stv0299_state* state = fe->demodulator_priv; |
534 | |
535 | s32 xsnr = 0xffff - ((stv0299_readreg (state, reg: 0x24) << 8) |
536 | | stv0299_readreg (state, reg: 0x25)); |
537 | xsnr = 3 * (xsnr - 0xa100); |
538 | *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; |
539 | |
540 | return 0; |
541 | } |
542 | |
543 | static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
544 | { |
545 | struct stv0299_state* state = fe->demodulator_priv; |
546 | |
547 | if (state->errmode != STATUS_UCBLOCKS) |
548 | return -ENOSYS; |
549 | |
550 | state->ucblocks += stv0299_readreg(state, reg: 0x1e); |
551 | state->ucblocks += (stv0299_readreg(state, reg: 0x1d) << 8); |
552 | *ucblocks = state->ucblocks; |
553 | |
554 | return 0; |
555 | } |
556 | |
557 | static int stv0299_set_frontend(struct dvb_frontend *fe) |
558 | { |
559 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
560 | struct stv0299_state* state = fe->demodulator_priv; |
561 | int invval = 0; |
562 | |
563 | dprintk ("%s : FE_SET_FRONTEND\n" , __func__); |
564 | if (state->config->set_ts_params) |
565 | state->config->set_ts_params(fe, 0); |
566 | |
567 | // set the inversion |
568 | if (p->inversion == INVERSION_OFF) invval = 0; |
569 | else if (p->inversion == INVERSION_ON) invval = 1; |
570 | else { |
571 | printk("stv0299 does not support auto-inversion\n" ); |
572 | return -EINVAL; |
573 | } |
574 | if (state->config->invert) invval = (~invval) & 1; |
575 | stv0299_writeregI(state, reg: 0x0c, data: (stv0299_readreg(state, reg: 0x0c) & 0xfe) | invval); |
576 | |
577 | if (fe->ops.tuner_ops.set_params) { |
578 | fe->ops.tuner_ops.set_params(fe); |
579 | if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); |
580 | } |
581 | |
582 | stv0299_set_FEC(state, fec: p->fec_inner); |
583 | stv0299_set_symbolrate(fe, srate: p->symbol_rate); |
584 | stv0299_writeregI(state, reg: 0x22, data: 0x00); |
585 | stv0299_writeregI(state, reg: 0x23, data: 0x00); |
586 | |
587 | state->tuner_frequency = p->frequency; |
588 | state->fec_inner = p->fec_inner; |
589 | state->symbol_rate = p->symbol_rate; |
590 | |
591 | return 0; |
592 | } |
593 | |
594 | static int stv0299_get_frontend(struct dvb_frontend *fe, |
595 | struct dtv_frontend_properties *p) |
596 | { |
597 | struct stv0299_state* state = fe->demodulator_priv; |
598 | s32 derot_freq; |
599 | int invval; |
600 | |
601 | derot_freq = (s32)(s16) ((stv0299_readreg (state, reg: 0x22) << 8) |
602 | | stv0299_readreg (state, reg: 0x23)); |
603 | |
604 | derot_freq *= (state->config->mclk >> 16); |
605 | derot_freq += 500; |
606 | derot_freq /= 1000; |
607 | |
608 | p->frequency += derot_freq; |
609 | |
610 | invval = stv0299_readreg (state, reg: 0x0c) & 1; |
611 | if (state->config->invert) invval = (~invval) & 1; |
612 | p->inversion = invval ? INVERSION_ON : INVERSION_OFF; |
613 | |
614 | p->fec_inner = stv0299_get_fec(state); |
615 | p->symbol_rate = stv0299_get_symbolrate(state); |
616 | |
617 | return 0; |
618 | } |
619 | |
620 | static int stv0299_sleep(struct dvb_frontend* fe) |
621 | { |
622 | struct stv0299_state* state = fe->demodulator_priv; |
623 | |
624 | stv0299_writeregI(state, reg: 0x02, data: 0xb0 | state->mcr_reg); |
625 | state->initialised = 0; |
626 | |
627 | return 0; |
628 | } |
629 | |
630 | static int stv0299_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) |
631 | { |
632 | struct stv0299_state* state = fe->demodulator_priv; |
633 | |
634 | if (enable) { |
635 | stv0299_writeregI(state, reg: 0x05, data: 0xb5); |
636 | } else { |
637 | stv0299_writeregI(state, reg: 0x05, data: 0x35); |
638 | } |
639 | udelay(1); |
640 | return 0; |
641 | } |
642 | |
643 | static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) |
644 | { |
645 | struct stv0299_state* state = fe->demodulator_priv; |
646 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
647 | |
648 | fesettings->min_delay_ms = state->config->min_delay_ms; |
649 | if (p->symbol_rate < 10000000) { |
650 | fesettings->step_size = p->symbol_rate / 32000; |
651 | fesettings->max_drift = 5000; |
652 | } else { |
653 | fesettings->step_size = p->symbol_rate / 16000; |
654 | fesettings->max_drift = p->symbol_rate / 2000; |
655 | } |
656 | return 0; |
657 | } |
658 | |
659 | static void stv0299_release(struct dvb_frontend* fe) |
660 | { |
661 | struct stv0299_state* state = fe->demodulator_priv; |
662 | kfree(objp: state); |
663 | } |
664 | |
665 | static const struct dvb_frontend_ops stv0299_ops; |
666 | |
667 | struct dvb_frontend* stv0299_attach(const struct stv0299_config* config, |
668 | struct i2c_adapter* i2c) |
669 | { |
670 | struct stv0299_state* state = NULL; |
671 | int id; |
672 | |
673 | /* allocate memory for the internal state */ |
674 | state = kzalloc(size: sizeof(struct stv0299_state), GFP_KERNEL); |
675 | if (state == NULL) goto error; |
676 | |
677 | /* setup the state */ |
678 | state->config = config; |
679 | state->i2c = i2c; |
680 | state->initialised = 0; |
681 | state->tuner_frequency = 0; |
682 | state->symbol_rate = 0; |
683 | state->fec_inner = 0; |
684 | state->errmode = STATUS_BER; |
685 | |
686 | /* check if the demod is there */ |
687 | stv0299_writeregI(state, reg: 0x02, data: 0x30); /* standby off */ |
688 | msleep(msecs: 200); |
689 | id = stv0299_readreg(state, reg: 0x00); |
690 | |
691 | /* register 0x00 contains 0xa1 for STV0299 and STV0299B */ |
692 | /* register 0x00 might contain 0x80 when returning from standby */ |
693 | if (id != 0xa1 && id != 0x80) goto error; |
694 | |
695 | /* create dvb_frontend */ |
696 | memcpy(&state->frontend.ops, &stv0299_ops, sizeof(struct dvb_frontend_ops)); |
697 | state->frontend.demodulator_priv = state; |
698 | return &state->frontend; |
699 | |
700 | error: |
701 | kfree(objp: state); |
702 | return NULL; |
703 | } |
704 | |
705 | static const struct dvb_frontend_ops stv0299_ops = { |
706 | .delsys = { SYS_DVBS }, |
707 | .info = { |
708 | .name = "ST STV0299 DVB-S" , |
709 | .frequency_min_hz = 950 * MHz, |
710 | .frequency_max_hz = 2150 * MHz, |
711 | .frequency_stepsize_hz = 125 * kHz, |
712 | .symbol_rate_min = 1000000, |
713 | .symbol_rate_max = 45000000, |
714 | .symbol_rate_tolerance = 500, /* ppm */ |
715 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
716 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | |
717 | FE_CAN_QPSK | |
718 | FE_CAN_FEC_AUTO |
719 | }, |
720 | |
721 | .release = stv0299_release, |
722 | |
723 | .init = stv0299_init, |
724 | .sleep = stv0299_sleep, |
725 | .write = stv0299_write, |
726 | .i2c_gate_ctrl = stv0299_i2c_gate_ctrl, |
727 | |
728 | .set_frontend = stv0299_set_frontend, |
729 | .get_frontend = stv0299_get_frontend, |
730 | .get_tune_settings = stv0299_get_tune_settings, |
731 | |
732 | .read_status = stv0299_read_status, |
733 | .read_ber = stv0299_read_ber, |
734 | .read_signal_strength = stv0299_read_signal_strength, |
735 | .read_snr = stv0299_read_snr, |
736 | .read_ucblocks = stv0299_read_ucblocks, |
737 | |
738 | .diseqc_send_master_cmd = stv0299_send_diseqc_msg, |
739 | .diseqc_send_burst = stv0299_send_diseqc_burst, |
740 | .set_tone = stv0299_set_tone, |
741 | .set_voltage = stv0299_set_voltage, |
742 | .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd, |
743 | }; |
744 | |
745 | module_param(debug_legacy_dish_switch, int, 0444); |
746 | MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches" ); |
747 | |
748 | module_param(debug, int, 0644); |
749 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)." ); |
750 | |
751 | MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver" ); |
752 | MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, Andreas Oberritter, Andrew de Quincey, Kenneth Aafly" ); |
753 | MODULE_LICENSE("GPL" ); |
754 | |
755 | EXPORT_SYMBOL_GPL(stv0299_attach); |
756 | |