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V4L/DVB (10662): remove redundant memset after kzalloc
[linux-2.6/verdex.git] / drivers / media / dvb / frontends / cx24116.c
blob9b9f57264ceff0bd76c7685477ae22486d2a4b5a
1 /*
2 Conexant cx24116/cx24118 - DVBS/S2 Satellite demod/tuner driver
3
4 Copyright (C) 2006-2008 Steven Toth <stoth@hauppauge.com>
5 Copyright (C) 2006-2007 Georg Acher
6 Copyright (C) 2007-2008 Darron Broad
7 March 2007
8 Fixed some bugs.
9 Added diseqc support.
10 Added corrected signal strength support.
11 August 2007
12 Sync with legacy version.
13 Some clean ups.
14 Copyright (C) 2008 Igor Liplianin
15 September, 9th 2008
16 Fixed locking on high symbol rates (>30000).
17 Implement MPEG initialization parameter.
18 January, 17th 2009
19 Fill set_voltage with actually control voltage code.
20 Correct set tone to not affect voltage.
21
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 2 of the License, or
25 (at your option) any later version.
26
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
31
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 */
36
37 #include <linux/slab.h>
38 #include <linux/kernel.h>
39 #include <linux/module.h>
40 #include <linux/moduleparam.h>
41 #include <linux/init.h>
42 #include <linux/firmware.h>
43
44 #include "dvb_frontend.h"
45 #include "cx24116.h"
46
47 static int debug;
48 module_param(debug, int, 0644);
49 MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
50
51 #define dprintk(args...) \
52 do { \
53 if (debug) \
54 printk(KERN_INFO "cx24116: " args); \
55 } while (0)
56
57 #define CX24116_DEFAULT_FIRMWARE "dvb-fe-cx24116.fw"
58 #define CX24116_SEARCH_RANGE_KHZ 5000
59
60 /* known registers */
61 #define CX24116_REG_COMMAND (0x00) /* command args 0x00..0x1e */
62 #define CX24116_REG_EXECUTE (0x1f) /* execute command */
63 #define CX24116_REG_MAILBOX (0x96) /* FW or multipurpose mailbox? */
64 #define CX24116_REG_RESET (0x20) /* reset status > 0 */
65 #define CX24116_REG_SIGNAL (0x9e) /* signal low */
66 #define CX24116_REG_SSTATUS (0x9d) /* signal high / status */
67 #define CX24116_REG_QUALITY8 (0xa3)
68 #define CX24116_REG_QSTATUS (0xbc)
69 #define CX24116_REG_QUALITY0 (0xd5)
70 #define CX24116_REG_BER0 (0xc9)
71 #define CX24116_REG_BER8 (0xc8)
72 #define CX24116_REG_BER16 (0xc7)
73 #define CX24116_REG_BER24 (0xc6)
74 #define CX24116_REG_UCB0 (0xcb)
75 #define CX24116_REG_UCB8 (0xca)
76 #define CX24116_REG_CLKDIV (0xf3)
77 #define CX24116_REG_RATEDIV (0xf9)
78
79 /* configured fec (not tuned) or actual FEC (tuned) 1=1/2 2=2/3 etc */
80 #define CX24116_REG_FECSTATUS (0x9c)
81
82 /* FECSTATUS bits */
83 /* mask to determine configured fec (not tuned) or actual fec (tuned) */
84 #define CX24116_FEC_FECMASK (0x1f)
85
86 /* Select DVB-S demodulator, else DVB-S2 */
87 #define CX24116_FEC_DVBS (0x20)
88 #define CX24116_FEC_UNKNOWN (0x40) /* Unknown/unused */
89
90 /* Pilot mode requested when tuning else always reset when tuned */
91 #define CX24116_FEC_PILOT (0x80)
92
93 /* arg buffer size */
94 #define CX24116_ARGLEN (0x1e)
95
96 /* rolloff */
97 #define CX24116_ROLLOFF_020 (0x00)
98 #define CX24116_ROLLOFF_025 (0x01)
99 #define CX24116_ROLLOFF_035 (0x02)
100
101 /* pilot bit */
102 #define CX24116_PILOT_OFF (0x00)
103 #define CX24116_PILOT_ON (0x40)
104
105 /* signal status */
106 #define CX24116_HAS_SIGNAL (0x01)
107 #define CX24116_HAS_CARRIER (0x02)
108 #define CX24116_HAS_VITERBI (0x04)
109 #define CX24116_HAS_SYNCLOCK (0x08)
110 #define CX24116_HAS_UNKNOWN1 (0x10)
111 #define CX24116_HAS_UNKNOWN2 (0x20)
112 #define CX24116_STATUS_MASK (0x0f)
113 #define CX24116_SIGNAL_MASK (0xc0)
114
115 #define CX24116_DISEQC_TONEOFF (0) /* toneburst never sent */
116 #define CX24116_DISEQC_TONECACHE (1) /* toneburst cached */
117 #define CX24116_DISEQC_MESGCACHE (2) /* message cached */
118
119 /* arg offset for DiSEqC */
120 #define CX24116_DISEQC_BURST (1)
121 #define CX24116_DISEQC_ARG2_2 (2) /* unknown value=2 */
122 #define CX24116_DISEQC_ARG3_0 (3) /* unknown value=0 */
123 #define CX24116_DISEQC_ARG4_0 (4) /* unknown value=0 */
124 #define CX24116_DISEQC_MSGLEN (5)
125 #define CX24116_DISEQC_MSGOFS (6)
126
127 /* DiSEqC burst */
128 #define CX24116_DISEQC_MINI_A (0)
129 #define CX24116_DISEQC_MINI_B (1)
130
131 /* DiSEqC tone burst */
132 static int toneburst = 1;
133 module_param(toneburst, int, 0644);
134 MODULE_PARM_DESC(toneburst, "DiSEqC toneburst 0=OFF, 1=TONE CACHE, "\
135 "2=MESSAGE CACHE (default:1)");
136
137 /* SNR measurements */
138 static int esno_snr;
139 module_param(esno_snr, int, 0644);
140 MODULE_PARM_DESC(debug, "SNR return units, 0=PERCENTAGE 0-100, "\
141 "1=ESNO(db * 10) (default:0)");
142
143 enum cmds {
144 CMD_SET_VCO = 0x10,
145 CMD_TUNEREQUEST = 0x11,
146 CMD_MPEGCONFIG = 0x13,
147 CMD_TUNERINIT = 0x14,
148 CMD_BANDWIDTH = 0x15,
149 CMD_GETAGC = 0x19,
150 CMD_LNBCONFIG = 0x20,
151 CMD_LNBSEND = 0x21, /* Formerly CMD_SEND_DISEQC */
152 CMD_LNBDCLEVEL = 0x22,
153 CMD_SET_TONE = 0x23,
154 CMD_UPDFWVERS = 0x35,
155 CMD_TUNERSLEEP = 0x36,
156 CMD_AGCCONTROL = 0x3b, /* Unknown */
157 };
158
159 /* The Demod/Tuner can't easily provide these, we cache them */
160 struct cx24116_tuning {
161 u32 frequency;
162 u32 symbol_rate;
163 fe_spectral_inversion_t inversion;
164 fe_code_rate_t fec;
165
166 fe_delivery_system_t delsys;
167 fe_modulation_t modulation;
168 fe_pilot_t pilot;
169 fe_rolloff_t rolloff;
170
171 /* Demod values */
172 u8 fec_val;
173 u8 fec_mask;
174 u8 inversion_val;
175 u8 pilot_val;
176 u8 rolloff_val;
177 };
178
179 /* Basic commands that are sent to the firmware */
180 struct cx24116_cmd {
181 u8 len;
182 u8 args[CX24116_ARGLEN];
183 };
184
185 struct cx24116_state {
186 struct i2c_adapter *i2c;
187 const struct cx24116_config *config;
188
189 struct dvb_frontend frontend;
190
191 struct cx24116_tuning dcur;
192 struct cx24116_tuning dnxt;
193
194 u8 skip_fw_load;
195 u8 burst;
196 struct cx24116_cmd dsec_cmd;
197 };
198
199 static int cx24116_writereg(struct cx24116_state *state, int reg, int data)
200 {
201 u8 buf[] = { reg, data };
202 struct i2c_msg msg = { .addr = state->config->demod_address,
203 .flags = 0, .buf = buf, .len = 2 };
204 int err;
205
206 if (debug > 1)
207 printk("cx24116: %s: write reg 0x%02x, value 0x%02x\n",
208 __func__, reg, data);
209
210 err = i2c_transfer(state->i2c, &msg, 1);
211 if (err != 1) {
212 printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x,"
213 " value == 0x%02x)\n", __func__, err, reg, data);
214 return -EREMOTEIO;
215 }
216
217 return 0;
218 }
219
220 /* Bulk byte writes to a single I2C address, for 32k firmware load */
221 static int cx24116_writeregN(struct cx24116_state *state, int reg,
222 const u8 *data, u16 len)
223 {
224 int ret = -EREMOTEIO;
225 struct i2c_msg msg;
226 u8 *buf;
227
228 buf = kmalloc(len + 1, GFP_KERNEL);
229 if (buf == NULL) {
230 printk("Unable to kmalloc\n");
231 ret = -ENOMEM;
232 goto error;
233 }
234
235 *(buf) = reg;
236 memcpy(buf + 1, data, len);
237
238 msg.addr = state->config->demod_address;
239 msg.flags = 0;
240 msg.buf = buf;
241 msg.len = len + 1;
242
243 if (debug > 1)
244 printk(KERN_INFO "cx24116: %s: write regN 0x%02x, len = %d\n",
245 __func__, reg, len);
246
247 ret = i2c_transfer(state->i2c, &msg, 1);
248 if (ret != 1) {
249 printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x\n",
250 __func__, ret, reg);
251 ret = -EREMOTEIO;
252 }
253
254 error:
255 kfree(buf);
256
257 return ret;
258 }
259
260 static int cx24116_readreg(struct cx24116_state *state, u8 reg)
261 {
262 int ret;
263 u8 b0[] = { reg };
264 u8 b1[] = { 0 };
265 struct i2c_msg msg[] = {
266 { .addr = state->config->demod_address, .flags = 0,
267 .buf = b0, .len = 1 },
268 { .addr = state->config->demod_address, .flags = I2C_M_RD,
269 .buf = b1, .len = 1 }
270 };
271
272 ret = i2c_transfer(state->i2c, msg, 2);
273
274 if (ret != 2) {
275 printk(KERN_ERR "%s: reg=0x%x (error=%d)\n",
276 __func__, reg, ret);
277 return ret;
278 }
279
280 if (debug > 1)
281 printk(KERN_INFO "cx24116: read reg 0x%02x, value 0x%02x\n",
282 reg, b1[0]);
283
284 return b1[0];
285 }
286
287 static int cx24116_set_inversion(struct cx24116_state *state,
288 fe_spectral_inversion_t inversion)
289 {
290 dprintk("%s(%d)\n", __func__, inversion);
291
292 switch (inversion) {
293 case INVERSION_OFF:
294 state->dnxt.inversion_val = 0x00;
295 break;
296 case INVERSION_ON:
297 state->dnxt.inversion_val = 0x04;
298 break;
299 case INVERSION_AUTO:
300 state->dnxt.inversion_val = 0x0C;
301 break;
302 default:
303 return -EINVAL;
304 }
305
306 state->dnxt.inversion = inversion;
307
308 return 0;
309 }
310
311 /*
312 * modfec (modulation and FEC)
313 * ===========================
314 *
315 * MOD FEC mask/val standard
316 * ---- -------- ----------- --------
317 * QPSK FEC_1_2 0x02 0x02+X DVB-S
318 * QPSK FEC_2_3 0x04 0x02+X DVB-S
319 * QPSK FEC_3_4 0x08 0x02+X DVB-S
320 * QPSK FEC_4_5 0x10 0x02+X DVB-S (?)
321 * QPSK FEC_5_6 0x20 0x02+X DVB-S
322 * QPSK FEC_6_7 0x40 0x02+X DVB-S
323 * QPSK FEC_7_8 0x80 0x02+X DVB-S
324 * QPSK FEC_8_9 0x01 0x02+X DVB-S (?) (NOT SUPPORTED?)
325 * QPSK AUTO 0xff 0x02+X DVB-S
326 *
327 * For DVB-S high byte probably represents FEC
328 * and low byte selects the modulator. The high
329 * byte is search range mask. Bit 5 may turn
330 * on DVB-S and remaining bits represent some
331 * kind of calibration (how/what i do not know).
332 *
333 * Eg.(2/3) szap "Zone Horror"
334 *
335 * mask/val = 0x04, 0x20
336 * status 1f | signal c3c0 | snr a333 | ber 00000098 | unc 0 | FE_HAS_LOCK
337 *
338 * mask/val = 0x04, 0x30
339 * status 1f | signal c3c0 | snr a333 | ber 00000000 | unc 0 | FE_HAS_LOCK
340 *
341 * After tuning FECSTATUS contains actual FEC
342 * in use numbered 1 through to 8 for 1/2 .. 2/3 etc
343 *
344 * NBC=NOT/NON BACKWARD COMPATIBLE WITH DVB-S (DVB-S2 only)
345 *
346 * NBC-QPSK FEC_1_2 0x00, 0x04 DVB-S2
347 * NBC-QPSK FEC_3_5 0x00, 0x05 DVB-S2
348 * NBC-QPSK FEC_2_3 0x00, 0x06 DVB-S2
349 * NBC-QPSK FEC_3_4 0x00, 0x07 DVB-S2
350 * NBC-QPSK FEC_4_5 0x00, 0x08 DVB-S2
351 * NBC-QPSK FEC_5_6 0x00, 0x09 DVB-S2
352 * NBC-QPSK FEC_8_9 0x00, 0x0a DVB-S2
353 * NBC-QPSK FEC_9_10 0x00, 0x0b DVB-S2
354 *
355 * NBC-8PSK FEC_3_5 0x00, 0x0c DVB-S2
356 * NBC-8PSK FEC_2_3 0x00, 0x0d DVB-S2
357 * NBC-8PSK FEC_3_4 0x00, 0x0e DVB-S2
358 * NBC-8PSK FEC_5_6 0x00, 0x0f DVB-S2
359 * NBC-8PSK FEC_8_9 0x00, 0x10 DVB-S2
360 * NBC-8PSK FEC_9_10 0x00, 0x11 DVB-S2
361 *
362 * For DVB-S2 low bytes selects both modulator
363 * and FEC. High byte is meaningless here. To
364 * set pilot, bit 6 (0x40) is set. When inspecting
365 * FECSTATUS bit 7 (0x80) represents the pilot
366 * selection whilst not tuned. When tuned, actual FEC
367 * in use is found in FECSTATUS as per above. Pilot
368 * value is reset.
369 */
370
371 /* A table of modulation, fec and configuration bytes for the demod.
372 * Not all S2 mmodulation schemes are support and not all rates with
373 * a scheme are support. Especially, no auto detect when in S2 mode.
374 */
375 static struct cx24116_modfec {
376 fe_delivery_system_t delivery_system;
377 fe_modulation_t modulation;
378 fe_code_rate_t fec;
379 u8 mask; /* In DVBS mode this is used to autodetect */
380 u8 val; /* Passed to the firmware to indicate mode selection */
381 } CX24116_MODFEC_MODES[] = {
382 /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
383
384 /*mod fec mask val */
385 { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
386 { SYS_DVBS, QPSK, FEC_1_2, 0x02, 0x2e }, /* 00000010 00101110 */
387 { SYS_DVBS, QPSK, FEC_2_3, 0x04, 0x2f }, /* 00000100 00101111 */
388 { SYS_DVBS, QPSK, FEC_3_4, 0x08, 0x30 }, /* 00001000 00110000 */
389 { SYS_DVBS, QPSK, FEC_4_5, 0xfe, 0x30 }, /* 000?0000 ? */
390 { SYS_DVBS, QPSK, FEC_5_6, 0x20, 0x31 }, /* 00100000 00110001 */
391 { SYS_DVBS, QPSK, FEC_6_7, 0xfe, 0x30 }, /* 0?000000 ? */
392 { SYS_DVBS, QPSK, FEC_7_8, 0x80, 0x32 }, /* 10000000 00110010 */
393 { SYS_DVBS, QPSK, FEC_8_9, 0xfe, 0x30 }, /* 0000000? ? */
394 { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
395 /* NBC-QPSK */
396 { SYS_DVBS2, QPSK, FEC_1_2, 0x00, 0x04 },
397 { SYS_DVBS2, QPSK, FEC_3_5, 0x00, 0x05 },
398 { SYS_DVBS2, QPSK, FEC_2_3, 0x00, 0x06 },
399 { SYS_DVBS2, QPSK, FEC_3_4, 0x00, 0x07 },
400 { SYS_DVBS2, QPSK, FEC_4_5, 0x00, 0x08 },
401 { SYS_DVBS2, QPSK, FEC_5_6, 0x00, 0x09 },
402 { SYS_DVBS2, QPSK, FEC_8_9, 0x00, 0x0a },
403 { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
404 /* 8PSK */
405 { SYS_DVBS2, PSK_8, FEC_3_5, 0x00, 0x0c },
406 { SYS_DVBS2, PSK_8, FEC_2_3, 0x00, 0x0d },
407 { SYS_DVBS2, PSK_8, FEC_3_4, 0x00, 0x0e },
408 { SYS_DVBS2, PSK_8, FEC_5_6, 0x00, 0x0f },
409 { SYS_DVBS2, PSK_8, FEC_8_9, 0x00, 0x10 },
410 { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
411 /*
412 * `val' can be found in the FECSTATUS register when tuning.
413 * FECSTATUS will give the actual FEC in use if tuning was successful.
414 */
415 };
416
417 static int cx24116_lookup_fecmod(struct cx24116_state *state,
418 fe_delivery_system_t d, fe_modulation_t m, fe_code_rate_t f)
419 {
420 int i, ret = -EOPNOTSUPP;
421
422 dprintk("%s(0x%02x,0x%02x)\n", __func__, m, f);
423
424 for (i = 0; i < ARRAY_SIZE(CX24116_MODFEC_MODES); i++) {
425 if ((d == CX24116_MODFEC_MODES[i].delivery_system) &&
426 (m == CX24116_MODFEC_MODES[i].modulation) &&
427 (f == CX24116_MODFEC_MODES[i].fec)) {
428 ret = i;
429 break;
430 }
431 }
432
433 return ret;
434 }
435
436 static int cx24116_set_fec(struct cx24116_state *state,
437 fe_delivery_system_t delsys, fe_modulation_t mod, fe_code_rate_t fec)
438 {
439 int ret = 0;
440
441 dprintk("%s(0x%02x,0x%02x)\n", __func__, mod, fec);
442
443 ret = cx24116_lookup_fecmod(state, delsys, mod, fec);
444
445 if (ret < 0)
446 return ret;
447
448 state->dnxt.fec = fec;
449 state->dnxt.fec_val = CX24116_MODFEC_MODES[ret].val;
450 state->dnxt.fec_mask = CX24116_MODFEC_MODES[ret].mask;
451 dprintk("%s() mask/val = 0x%02x/0x%02x\n", __func__,
452 state->dnxt.fec_mask, state->dnxt.fec_val);
453
454 return 0;
455 }
456
457 static int cx24116_set_symbolrate(struct cx24116_state *state, u32 rate)
458 {
459 dprintk("%s(%d)\n", __func__, rate);
460
461 /* check if symbol rate is within limits */
462 if ((rate > state->frontend.ops.info.symbol_rate_max) ||
463 (rate < state->frontend.ops.info.symbol_rate_min)) {
464 dprintk("%s() unsupported symbol_rate = %d\n", __func__, rate);
465 return -EOPNOTSUPP;
466 }
467
468 state->dnxt.symbol_rate = rate;
469 dprintk("%s() symbol_rate = %d\n", __func__, rate);
470
471 return 0;
472 }
473
474 static int cx24116_load_firmware(struct dvb_frontend *fe,
475 const struct firmware *fw);
476
477 static int cx24116_firmware_ondemand(struct dvb_frontend *fe)
478 {
479 struct cx24116_state *state = fe->demodulator_priv;
480 const struct firmware *fw;
481 int ret = 0;
482
483 dprintk("%s()\n", __func__);
484
485 if (cx24116_readreg(state, 0x20) > 0) {
486
487 if (state->skip_fw_load)
488 return 0;
489
490 /* Load firmware */
491 /* request the firmware, this will block until loaded */
492 printk(KERN_INFO "%s: Waiting for firmware upload (%s)...\n",
493 __func__, CX24116_DEFAULT_FIRMWARE);
494 ret = request_firmware(&fw, CX24116_DEFAULT_FIRMWARE,
495 &state->i2c->dev);
496 printk(KERN_INFO "%s: Waiting for firmware upload(2)...\n",
497 __func__);
498 if (ret) {
499 printk(KERN_ERR "%s: No firmware uploaded "
500 "(timeout or file not found?)\n", __func__);
501 return ret;
502 }
503
504 /* Make sure we don't recurse back through here
505 * during loading */
506 state->skip_fw_load = 1;
507
508 ret = cx24116_load_firmware(fe, fw);
509 if (ret)
510 printk(KERN_ERR "%s: Writing firmware to device failed\n",
511 __func__);
512
513 release_firmware(fw);
514
515 printk(KERN_INFO "%s: Firmware upload %s\n", __func__,
516 ret == 0 ? "complete" : "failed");
517
518 /* Ensure firmware is always loaded if required */
519 state->skip_fw_load = 0;
520 }
521
522 return ret;
523 }
524
525 /* Take a basic firmware command structure, format it
526 * and forward it for processing
527 */
528 static int cx24116_cmd_execute(struct dvb_frontend *fe, struct cx24116_cmd *cmd)
529 {
530 struct cx24116_state *state = fe->demodulator_priv;
531 int i, ret;
532
533 dprintk("%s()\n", __func__);
534
535 /* Load the firmware if required */
536 ret = cx24116_firmware_ondemand(fe);
537 if (ret != 0) {
538 printk(KERN_ERR "%s(): Unable initialise the firmware\n",
539 __func__);
540 return ret;
541 }
542
543 /* Write the command */
544 for (i = 0; i < cmd->len ; i++) {
545 dprintk("%s: 0x%02x == 0x%02x\n", __func__, i, cmd->args[i]);
546 cx24116_writereg(state, i, cmd->args[i]);
547 }
548
549 /* Start execution and wait for cmd to terminate */
550 cx24116_writereg(state, CX24116_REG_EXECUTE, 0x01);
551 while (cx24116_readreg(state, CX24116_REG_EXECUTE)) {
552 msleep(10);
553 if (i++ > 64) {
554 /* Avoid looping forever if the firmware does
555 not respond */
556 printk(KERN_WARNING "%s() Firmware not responding\n",
557 __func__);
558 return -EREMOTEIO;
559 }
560 }
561 return 0;
562 }
563
564 static int cx24116_load_firmware(struct dvb_frontend *fe,
565 const struct firmware *fw)
566 {
567 struct cx24116_state *state = fe->demodulator_priv;
568 struct cx24116_cmd cmd;
569 int i, ret;
570 unsigned char vers[4];
571
572 dprintk("%s\n", __func__);
573 dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n",
574 fw->size,
575 fw->data[0],
576 fw->data[1],
577 fw->data[fw->size-2],
578 fw->data[fw->size-1]);
579
580 /* Toggle 88x SRST pin to reset demod */
581 if (state->config->reset_device)
582 state->config->reset_device(fe);
583
584 /* Begin the firmware load process */
585 /* Prepare the demod, load the firmware, cleanup after load */
586
587 /* Init PLL */
588 cx24116_writereg(state, 0xE5, 0x00);
589 cx24116_writereg(state, 0xF1, 0x08);
590 cx24116_writereg(state, 0xF2, 0x13);
591
592 /* Start PLL */
593 cx24116_writereg(state, 0xe0, 0x03);
594 cx24116_writereg(state, 0xe0, 0x00);
595
596 /* Unknown */
597 cx24116_writereg(state, CX24116_REG_CLKDIV, 0x46);
598 cx24116_writereg(state, CX24116_REG_RATEDIV, 0x00);
599
600 /* Unknown */
601 cx24116_writereg(state, 0xF0, 0x03);
602 cx24116_writereg(state, 0xF4, 0x81);
603 cx24116_writereg(state, 0xF5, 0x00);
604 cx24116_writereg(state, 0xF6, 0x00);
605
606 /* write the entire firmware as one transaction */
607 cx24116_writeregN(state, 0xF7, fw->data, fw->size);
608
609 cx24116_writereg(state, 0xF4, 0x10);
610 cx24116_writereg(state, 0xF0, 0x00);
611 cx24116_writereg(state, 0xF8, 0x06);
612
613 /* Firmware CMD 10: VCO config */
614 cmd.args[0x00] = CMD_SET_VCO;
615 cmd.args[0x01] = 0x05;
616 cmd.args[0x02] = 0xdc;
617 cmd.args[0x03] = 0xda;
618 cmd.args[0x04] = 0xae;
619 cmd.args[0x05] = 0xaa;
620 cmd.args[0x06] = 0x04;
621 cmd.args[0x07] = 0x9d;
622 cmd.args[0x08] = 0xfc;
623 cmd.args[0x09] = 0x06;
624 cmd.len = 0x0a;
625 ret = cx24116_cmd_execute(fe, &cmd);
626 if (ret != 0)
627 return ret;
628
629 cx24116_writereg(state, CX24116_REG_SSTATUS, 0x00);
630
631 /* Firmware CMD 14: Tuner config */
632 cmd.args[0x00] = CMD_TUNERINIT;
633 cmd.args[0x01] = 0x00;
634 cmd.args[0x02] = 0x00;
635 cmd.len = 0x03;
636 ret = cx24116_cmd_execute(fe, &cmd);
637 if (ret != 0)
638 return ret;
639
640 cx24116_writereg(state, 0xe5, 0x00);
641
642 /* Firmware CMD 13: MPEG config */
643 cmd.args[0x00] = CMD_MPEGCONFIG;
644 cmd.args[0x01] = 0x01;
645 cmd.args[0x02] = 0x75;
646 cmd.args[0x03] = 0x00;
647 if (state->config->mpg_clk_pos_pol)
648 cmd.args[0x04] = state->config->mpg_clk_pos_pol;
649 else
650 cmd.args[0x04] = 0x02;
651 cmd.args[0x05] = 0x00;
652 cmd.len = 0x06;
653 ret = cx24116_cmd_execute(fe, &cmd);
654 if (ret != 0)
655 return ret;
656
657 /* Firmware CMD 35: Get firmware version */
658 cmd.args[0x00] = CMD_UPDFWVERS;
659 cmd.len = 0x02;
660 for (i = 0; i < 4; i++) {
661 cmd.args[0x01] = i;
662 ret = cx24116_cmd_execute(fe, &cmd);
663 if (ret != 0)
664 return ret;
665 vers[i] = cx24116_readreg(state, CX24116_REG_MAILBOX);
666 }
667 printk(KERN_INFO "%s: FW version %i.%i.%i.%i\n", __func__,
668 vers[0], vers[1], vers[2], vers[3]);
669
670 return 0;
671 }
672
673 static int cx24116_read_status(struct dvb_frontend *fe, fe_status_t *status)
674 {
675 struct cx24116_state *state = fe->demodulator_priv;
676
677 int lock = cx24116_readreg(state, CX24116_REG_SSTATUS) &
678 CX24116_STATUS_MASK;
679
680 dprintk("%s: status = 0x%02x\n", __func__, lock);
681
682 *status = 0;
683
684 if (lock & CX24116_HAS_SIGNAL)
685 *status |= FE_HAS_SIGNAL;
686 if (lock & CX24116_HAS_CARRIER)
687 *status |= FE_HAS_CARRIER;
688 if (lock & CX24116_HAS_VITERBI)
689 *status |= FE_HAS_VITERBI;
690 if (lock & CX24116_HAS_SYNCLOCK)
691 *status |= FE_HAS_SYNC | FE_HAS_LOCK;
692
693 return 0;
694 }
695
696 static int cx24116_read_ber(struct dvb_frontend *fe, u32 *ber)
697 {
698 struct cx24116_state *state = fe->demodulator_priv;
699
700 dprintk("%s()\n", __func__);
701
702 *ber = (cx24116_readreg(state, CX24116_REG_BER24) << 24) |
703 (cx24116_readreg(state, CX24116_REG_BER16) << 16) |
704 (cx24116_readreg(state, CX24116_REG_BER8) << 8) |
705 cx24116_readreg(state, CX24116_REG_BER0);
706
707 return 0;
708 }
709
710 /* TODO Determine function and scale appropriately */
711 static int cx24116_read_signal_strength(struct dvb_frontend *fe,
712 u16 *signal_strength)
713 {
714 struct cx24116_state *state = fe->demodulator_priv;
715 struct cx24116_cmd cmd;
716 int ret;
717 u16 sig_reading;
718
719 dprintk("%s()\n", __func__);
720
721 /* Firmware CMD 19: Get AGC */
722 cmd.args[0x00] = CMD_GETAGC;
723 cmd.len = 0x01;
724 ret = cx24116_cmd_execute(fe, &cmd);
725 if (ret != 0)
726 return ret;
727
728 sig_reading =
729 (cx24116_readreg(state,
730 CX24116_REG_SSTATUS) & CX24116_SIGNAL_MASK) |
731 (cx24116_readreg(state, CX24116_REG_SIGNAL) << 6);
732 *signal_strength = 0 - sig_reading;
733
734 dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n",
735 __func__, sig_reading, *signal_strength);
736
737 return 0;
738 }
739
740 /* SNR (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */
741 static int cx24116_read_snr_pct(struct dvb_frontend *fe, u16 *snr)
742 {
743 struct cx24116_state *state = fe->demodulator_priv;
744 u8 snr_reading;
745 static const u32 snr_tab[] = { /* 10 x Table (rounded up) */
746 0x00000, 0x0199A, 0x03333, 0x04ccD, 0x06667,
747 0x08000, 0x0999A, 0x0b333, 0x0cccD, 0x0e667,
748 0x10000, 0x1199A, 0x13333, 0x14ccD, 0x16667,
749 0x18000 };
750
751 dprintk("%s()\n", __func__);
752
753 snr_reading = cx24116_readreg(state, CX24116_REG_QUALITY0);
754
755 if (snr_reading >= 0xa0 /* 100% */)
756 *snr = 0xffff;
757 else
758 *snr = snr_tab[(snr_reading & 0xf0) >> 4] +
759 (snr_tab[(snr_reading & 0x0f)] >> 4);
760
761 dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n", __func__,
762 snr_reading, *snr);
763
764 return 0;
765 }
766
767 /* The reelbox patches show the value in the registers represents
768 * ESNO, from 0->30db (values 0->300). We provide this value by
769 * default.
770 */
771 static int cx24116_read_snr_esno(struct dvb_frontend *fe, u16 *snr)
772 {
773 struct cx24116_state *state = fe->demodulator_priv;
774
775 dprintk("%s()\n", __func__);
776
777 *snr = cx24116_readreg(state, CX24116_REG_QUALITY8) << 8 |
778 cx24116_readreg(state, CX24116_REG_QUALITY0);
779
780 dprintk("%s: raw 0x%04x\n", __func__, *snr);
781
782 return 0;
783 }
784
785 static int cx24116_read_snr(struct dvb_frontend *fe, u16 *snr)
786 {
787 if (esno_snr == 1)
788 return cx24116_read_snr_esno(fe, snr);
789 else
790 return cx24116_read_snr_pct(fe, snr);
791 }
792
793 static int cx24116_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
794 {
795 struct cx24116_state *state = fe->demodulator_priv;
796
797 dprintk("%s()\n", __func__);
798
799 *ucblocks = (cx24116_readreg(state, CX24116_REG_UCB8) << 8) |
800 cx24116_readreg(state, CX24116_REG_UCB0);
801
802 return 0;
803 }
804
805 /* Overwrite the current tuning params, we are about to tune */
806 static void cx24116_clone_params(struct dvb_frontend *fe)
807 {
808 struct cx24116_state *state = fe->demodulator_priv;
809 memcpy(&state->dcur, &state->dnxt, sizeof(state->dcur));
810 }
811
812 /* Wait for LNB */
813 static int cx24116_wait_for_lnb(struct dvb_frontend *fe)
814 {
815 struct cx24116_state *state = fe->demodulator_priv;
816 int i;
817
818 dprintk("%s() qstatus = 0x%02x\n", __func__,
819 cx24116_readreg(state, CX24116_REG_QSTATUS));
820
821 /* Wait for up to 300 ms */
822 for (i = 0; i < 30 ; i++) {
823 if (cx24116_readreg(state, CX24116_REG_QSTATUS) & 0x20)
824 return 0;
825 msleep(10);
826 }
827
828 dprintk("%s(): LNB not ready\n", __func__);
829
830 return -ETIMEDOUT; /* -EBUSY ? */
831 }
832
833 static int cx24116_set_voltage(struct dvb_frontend *fe,
834 fe_sec_voltage_t voltage)
835 {
836 struct cx24116_cmd cmd;
837 int ret;
838
839 dprintk("%s: %s\n", __func__,
840 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
841 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
842
843 /* Wait for LNB ready */
844 ret = cx24116_wait_for_lnb(fe);
845 if (ret != 0)
846 return ret;
847
848 /* Wait for voltage/min repeat delay */
849 msleep(100);
850
851 cmd.args[0x00] = CMD_LNBDCLEVEL;
852 cmd.args[0x01] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
853 cmd.len = 0x02;
854
855 /* Min delay time before DiSEqC send */
856 msleep(15);
857
858 return cx24116_cmd_execute(fe, &cmd);
859 }
860
861 static int cx24116_set_tone(struct dvb_frontend *fe,
862 fe_sec_tone_mode_t tone)
863 {
864 struct cx24116_cmd cmd;
865 int ret;
866
867 dprintk("%s(%d)\n", __func__, tone);
868 if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
869 printk(KERN_ERR "%s: Invalid, tone=%d\n", __func__, tone);
870 return -EINVAL;
871 }
872
873 /* Wait for LNB ready */
874 ret = cx24116_wait_for_lnb(fe);
875 if (ret != 0)
876 return ret;
877
878 /* Min delay time after DiSEqC send */
879 msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */
880
881 /* Now we set the tone */
882 cmd.args[0x00] = CMD_SET_TONE;
883 cmd.args[0x01] = 0x00;
884 cmd.args[0x02] = 0x00;
885
886 switch (tone) {
887 case SEC_TONE_ON:
888 dprintk("%s: setting tone on\n", __func__);
889 cmd.args[0x03] = 0x01;
890 break;
891 case SEC_TONE_OFF:
892 dprintk("%s: setting tone off\n", __func__);
893 cmd.args[0x03] = 0x00;
894 break;
895 }
896 cmd.len = 0x04;
897
898 /* Min delay time before DiSEqC send */
899 msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */
900
901 return cx24116_cmd_execute(fe, &cmd);
902 }
903
904 /* Initialise DiSEqC */
905 static int cx24116_diseqc_init(struct dvb_frontend *fe)
906 {
907 struct cx24116_state *state = fe->demodulator_priv;
908 struct cx24116_cmd cmd;
909 int ret;
910
911 /* Firmware CMD 20: LNB/DiSEqC config */
912 cmd.args[0x00] = CMD_LNBCONFIG;
913 cmd.args[0x01] = 0x00;
914 cmd.args[0x02] = 0x10;
915 cmd.args[0x03] = 0x00;
916 cmd.args[0x04] = 0x8f;
917 cmd.args[0x05] = 0x28;
918 cmd.args[0x06] = (toneburst == CX24116_DISEQC_TONEOFF) ? 0x00 : 0x01;
919 cmd.args[0x07] = 0x01;
920 cmd.len = 0x08;
921 ret = cx24116_cmd_execute(fe, &cmd);
922 if (ret != 0)
923 return ret;
924
925 /* Prepare a DiSEqC command */
926 state->dsec_cmd.args[0x00] = CMD_LNBSEND;
927
928 /* DiSEqC burst */
929 state->dsec_cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A;
930
931 /* Unknown */
932 state->dsec_cmd.args[CX24116_DISEQC_ARG2_2] = 0x02;
933 state->dsec_cmd.args[CX24116_DISEQC_ARG3_0] = 0x00;
934 /* Continuation flag? */
935 state->dsec_cmd.args[CX24116_DISEQC_ARG4_0] = 0x00;
936
937 /* DiSEqC message length */
938 state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = 0x00;
939
940 /* Command length */
941 state->dsec_cmd.len = CX24116_DISEQC_MSGOFS;
942
943 return 0;
944 }
945
946 /* Send DiSEqC message with derived burst (hack) || previous burst */
947 static int cx24116_send_diseqc_msg(struct dvb_frontend *fe,
948 struct dvb_diseqc_master_cmd *d)
949 {
950 struct cx24116_state *state = fe->demodulator_priv;
951 int i, ret;
952
953 /* Dump DiSEqC message */
954 if (debug) {
955 printk(KERN_INFO "cx24116: %s(", __func__);
956 for (i = 0 ; i < d->msg_len ;) {
957 printk(KERN_INFO "0x%02x", d->msg[i]);
958 if (++i < d->msg_len)
959 printk(KERN_INFO ", ");
960 }
961 printk(") toneburst=%d\n", toneburst);
962 }
963
964 /* Validate length */
965 if (d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS))
966 return -EINVAL;
967
968 /* DiSEqC message */
969 for (i = 0; i < d->msg_len; i++)
970 state->dsec_cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i];
971
972 /* DiSEqC message length */
973 state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len;
974
975 /* Command length */
976 state->dsec_cmd.len = CX24116_DISEQC_MSGOFS +
977 state->dsec_cmd.args[CX24116_DISEQC_MSGLEN];
978
979 /* DiSEqC toneburst */
980 if (toneburst == CX24116_DISEQC_MESGCACHE)
981 /* Message is cached */
982 return 0;
983
984 else if (toneburst == CX24116_DISEQC_TONEOFF)
985 /* Message is sent without burst */
986 state->dsec_cmd.args[CX24116_DISEQC_BURST] = 0;
987
988 else if (toneburst == CX24116_DISEQC_TONECACHE) {
989 /*
990 * Message is sent with derived else cached burst
991 *
992 * WRITE PORT GROUP COMMAND 38
993 *
994 * 0/A/A: E0 10 38 F0..F3
995 * 1/B/B: E0 10 38 F4..F7
996 * 2/C/A: E0 10 38 F8..FB
997 * 3/D/B: E0 10 38 FC..FF
998 *
999 * databyte[3]= 8421:8421
1000 * ABCD:WXYZ
1001 * CLR :SET
1002 *
1003 * WX= PORT SELECT 0..3 (X=TONEBURST)
1004 * Y = VOLTAGE (0=13V, 1=18V)
1005 * Z = BAND (0=LOW, 1=HIGH(22K))
1006 */
1007 if (d->msg_len >= 4 && d->msg[2] == 0x38)
1008 state->dsec_cmd.args[CX24116_DISEQC_BURST] =
1009 ((d->msg[3] & 4) >> 2);
1010 if (debug)
1011 dprintk("%s burst=%d\n", __func__,
1012 state->dsec_cmd.args[CX24116_DISEQC_BURST]);
1013 }
1014
1015 /* Wait for LNB ready */
1016 ret = cx24116_wait_for_lnb(fe);
1017 if (ret != 0)
1018 return ret;
1019
1020 /* Wait for voltage/min repeat delay */
1021 msleep(100);
1022
1023 /* Command */
1024 ret = cx24116_cmd_execute(fe, &state->dsec_cmd);
1025 if (ret != 0)
1026 return ret;
1027 /*
1028 * Wait for send
1029 *
1030 * Eutelsat spec:
1031 * >15ms delay + (XXX determine if FW does this, see set_tone)
1032 * 13.5ms per byte +
1033 * >15ms delay +
1034 * 12.5ms burst +
1035 * >15ms delay (XXX determine if FW does this, see set_tone)
1036 */
1037 msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4) +
1038 ((toneburst == CX24116_DISEQC_TONEOFF) ? 30 : 60));
1039
1040 return 0;
1041 }
1042
1043 /* Send DiSEqC burst */
1044 static int cx24116_diseqc_send_burst(struct dvb_frontend *fe,
1045 fe_sec_mini_cmd_t burst)
1046 {
1047 struct cx24116_state *state = fe->demodulator_priv;
1048 int ret;
1049
1050 dprintk("%s(%d) toneburst=%d\n", __func__, burst, toneburst);
1051
1052 /* DiSEqC burst */
1053 if (burst == SEC_MINI_A)
1054 state->dsec_cmd.args[CX24116_DISEQC_BURST] =
1055 CX24116_DISEQC_MINI_A;
1056 else if (burst == SEC_MINI_B)
1057 state->dsec_cmd.args[CX24116_DISEQC_BURST] =
1058 CX24116_DISEQC_MINI_B;
1059 else
1060 return -EINVAL;
1061
1062 /* DiSEqC toneburst */
1063 if (toneburst != CX24116_DISEQC_MESGCACHE)
1064 /* Burst is cached */
1065 return 0;
1066
1067 /* Burst is to be sent with cached message */
1068
1069 /* Wait for LNB ready */
1070 ret = cx24116_wait_for_lnb(fe);
1071 if (ret != 0)
1072 return ret;
1073
1074 /* Wait for voltage/min repeat delay */
1075 msleep(100);
1076
1077 /* Command */
1078 ret = cx24116_cmd_execute(fe, &state->dsec_cmd);
1079 if (ret != 0)
1080 return ret;
1081
1082 /*
1083 * Wait for send
1084 *
1085 * Eutelsat spec:
1086 * >15ms delay + (XXX determine if FW does this, see set_tone)
1087 * 13.5ms per byte +
1088 * >15ms delay +
1089 * 12.5ms burst +
1090 * >15ms delay (XXX determine if FW does this, see set_tone)
1091 */
1092 msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4) + 60);
1093
1094 return 0;
1095 }
1096
1097 static void cx24116_release(struct dvb_frontend *fe)
1098 {
1099 struct cx24116_state *state = fe->demodulator_priv;
1100 dprintk("%s\n", __func__);
1101 kfree(state);
1102 }
1103
1104 static struct dvb_frontend_ops cx24116_ops;
1105
1106 struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
1107 struct i2c_adapter *i2c)
1108 {
1109 struct cx24116_state *state = NULL;
1110 int ret;
1111
1112 dprintk("%s\n", __func__);
1113
1114 /* allocate memory for the internal state */
1115 state = kzalloc(sizeof(struct cx24116_state), GFP_KERNEL);
1116 if (state == NULL)
1117 goto error1;
1118
1119 state->config = config;
1120 state->i2c = i2c;
1121
1122 /* check if the demod is present */
1123 ret = (cx24116_readreg(state, 0xFF) << 8) |
1124 cx24116_readreg(state, 0xFE);
1125 if (ret != 0x0501) {
1126 printk(KERN_INFO "Invalid probe, probably not a CX24116 device\n");
1127 goto error2;
1128 }
1129
1130 /* create dvb_frontend */
1131 memcpy(&state->frontend.ops, &cx24116_ops,
1132 sizeof(struct dvb_frontend_ops));
1133 state->frontend.demodulator_priv = state;
1134 return &state->frontend;
1135
1136 error2: kfree(state);
1137 error1: return NULL;
1138 }
1139 EXPORT_SYMBOL(cx24116_attach);
1140
1141 /*
1142 * Initialise or wake up device
1143 *
1144 * Power config will reset and load initial firmware if required
1145 */
1146 static int cx24116_initfe(struct dvb_frontend *fe)
1147 {
1148 struct cx24116_state *state = fe->demodulator_priv;
1149 struct cx24116_cmd cmd;
1150 int ret;
1151
1152 dprintk("%s()\n", __func__);
1153
1154 /* Power on */
1155 cx24116_writereg(state, 0xe0, 0);
1156 cx24116_writereg(state, 0xe1, 0);
1157 cx24116_writereg(state, 0xea, 0);
1158
1159 /* Firmware CMD 36: Power config */
1160 cmd.args[0x00] = CMD_TUNERSLEEP;
1161 cmd.args[0x01] = 0;
1162 cmd.len = 0x02;
1163 ret = cx24116_cmd_execute(fe, &cmd);
1164 if (ret != 0)
1165 return ret;
1166
1167 ret = cx24116_diseqc_init(fe);
1168 if (ret != 0)
1169 return ret;
1170
1171 /* HVR-4000 needs this */
1172 return cx24116_set_voltage(fe, SEC_VOLTAGE_13);
1173 }
1174
1175 /*
1176 * Put device to sleep
1177 */
1178 static int cx24116_sleep(struct dvb_frontend *fe)
1179 {
1180 struct cx24116_state *state = fe->demodulator_priv;
1181 struct cx24116_cmd cmd;
1182 int ret;
1183
1184 dprintk("%s()\n", __func__);
1185
1186 /* Firmware CMD 36: Power config */
1187 cmd.args[0x00] = CMD_TUNERSLEEP;
1188 cmd.args[0x01] = 1;
1189 cmd.len = 0x02;
1190 ret = cx24116_cmd_execute(fe, &cmd);
1191 if (ret != 0)
1192 return ret;
1193
1194 /* Power off (Shutdown clocks) */
1195 cx24116_writereg(state, 0xea, 0xff);
1196 cx24116_writereg(state, 0xe1, 1);
1197 cx24116_writereg(state, 0xe0, 1);
1198
1199 return 0;
1200 }
1201
1202 static int cx24116_set_property(struct dvb_frontend *fe,
1203 struct dtv_property *tvp)
1204 {
1205 dprintk("%s(..)\n", __func__);
1206 return 0;
1207 }
1208
1209 static int cx24116_get_property(struct dvb_frontend *fe,
1210 struct dtv_property *tvp)
1211 {
1212 dprintk("%s(..)\n", __func__);
1213 return 0;
1214 }
1215
1216 /* dvb-core told us to tune, the tv property cache will be complete,
1217 * it's safe for is to pull values and use them for tuning purposes.
1218 */
1219 static int cx24116_set_frontend(struct dvb_frontend *fe,
1220 struct dvb_frontend_parameters *p)
1221 {
1222 struct cx24116_state *state = fe->demodulator_priv;
1223 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1224 struct cx24116_cmd cmd;
1225 fe_status_t tunerstat;
1226 int i, status, ret, retune = 1;
1227
1228 dprintk("%s()\n", __func__);
1229
1230 switch (c->delivery_system) {
1231 case SYS_DVBS:
1232 dprintk("%s: DVB-S delivery system selected\n", __func__);
1233
1234 /* Only QPSK is supported for DVB-S */
1235 if (c->modulation != QPSK) {
1236 dprintk("%s: unsupported modulation selected (%d)\n",
1237 __func__, c->modulation);
1238 return -EOPNOTSUPP;
1239 }
1240
1241 /* Pilot doesn't exist in DVB-S, turn bit off */
1242 state->dnxt.pilot_val = CX24116_PILOT_OFF;
1243
1244 /* DVB-S only supports 0.35 */
1245 if (c->rolloff != ROLLOFF_35) {
1246 dprintk("%s: unsupported rolloff selected (%d)\n",
1247 __func__, c->rolloff);
1248 return -EOPNOTSUPP;
1249 }
1250 state->dnxt.rolloff_val = CX24116_ROLLOFF_035;
1251 break;
1252
1253 case SYS_DVBS2:
1254 dprintk("%s: DVB-S2 delivery system selected\n", __func__);
1255
1256 /*
1257 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1258 * but not hardware auto detection
1259 */
1260 if (c->modulation != PSK_8 && c->modulation != QPSK) {
1261 dprintk("%s: unsupported modulation selected (%d)\n",
1262 __func__, c->modulation);
1263 return -EOPNOTSUPP;
1264 }
1265
1266 switch (c->pilot) {
1267 case PILOT_AUTO: /* Not supported but emulated */
1268 state->dnxt.pilot_val = (c->modulation == QPSK)
1269 ? CX24116_PILOT_OFF : CX24116_PILOT_ON;
1270 retune++;
1271 break;
1272 case PILOT_OFF:
1273 state->dnxt.pilot_val = CX24116_PILOT_OFF;
1274 break;
1275 case PILOT_ON:
1276 state->dnxt.pilot_val = CX24116_PILOT_ON;
1277 break;
1278 default:
1279 dprintk("%s: unsupported pilot mode selected (%d)\n",
1280 __func__, c->pilot);
1281 return -EOPNOTSUPP;
1282 }
1283
1284 switch (c->rolloff) {
1285 case ROLLOFF_20:
1286 state->dnxt.rolloff_val = CX24116_ROLLOFF_020;
1287 break;
1288 case ROLLOFF_25:
1289 state->dnxt.rolloff_val = CX24116_ROLLOFF_025;
1290 break;
1291 case ROLLOFF_35:
1292 state->dnxt.rolloff_val = CX24116_ROLLOFF_035;
1293 break;
1294 case ROLLOFF_AUTO: /* Rolloff must be explicit */
1295 default:
1296 dprintk("%s: unsupported rolloff selected (%d)\n",
1297 __func__, c->rolloff);
1298 return -EOPNOTSUPP;
1299 }
1300 break;
1301
1302 default:
1303 dprintk("%s: unsupported delivery system selected (%d)\n",
1304 __func__, c->delivery_system);
1305 return -EOPNOTSUPP;
1306 }
1307 state->dnxt.delsys = c->delivery_system;
1308 state->dnxt.modulation = c->modulation;
1309 state->dnxt.frequency = c->frequency;
1310 state->dnxt.pilot = c->pilot;
1311 state->dnxt.rolloff = c->rolloff;
1312
1313 ret = cx24116_set_inversion(state, c->inversion);
1314 if (ret != 0)
1315 return ret;
1316
1317 /* FEC_NONE/AUTO for DVB-S2 is not supported and detected here */
1318 ret = cx24116_set_fec(state, c->delivery_system, c->modulation, c->fec_inner);
1319 if (ret != 0)
1320 return ret;
1321
1322 ret = cx24116_set_symbolrate(state, c->symbol_rate);
1323 if (ret != 0)
1324 return ret;
1325
1326 /* discard the 'current' tuning parameters and prepare to tune */
1327 cx24116_clone_params(fe);
1328
1329 dprintk("%s: delsys = %d\n", __func__, state->dcur.delsys);
1330 dprintk("%s: modulation = %d\n", __func__, state->dcur.modulation);
1331 dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency);
1332 dprintk("%s: pilot = %d (val = 0x%02x)\n", __func__,
1333 state->dcur.pilot, state->dcur.pilot_val);
1334 dprintk("%s: retune = %d\n", __func__, retune);
1335 dprintk("%s: rolloff = %d (val = 0x%02x)\n", __func__,
1336 state->dcur.rolloff, state->dcur.rolloff_val);
1337 dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1338 dprintk("%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1339 state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1340 dprintk("%s: Inversion = %d (val = 0x%02x)\n", __func__,
1341 state->dcur.inversion, state->dcur.inversion_val);
1342
1343 /* This is also done in advise/acquire on HVR4000 but not on LITE */
1344 if (state->config->set_ts_params)
1345 state->config->set_ts_params(fe, 0);
1346
1347 /* Set/Reset B/W */
1348 cmd.args[0x00] = CMD_BANDWIDTH;
1349 cmd.args[0x01] = 0x01;
1350 cmd.len = 0x02;
1351 ret = cx24116_cmd_execute(fe, &cmd);
1352 if (ret != 0)
1353 return ret;
1354
1355 /* Prepare a tune request */
1356 cmd.args[0x00] = CMD_TUNEREQUEST;
1357
1358 /* Frequency */
1359 cmd.args[0x01] = (state->dcur.frequency & 0xff0000) >> 16;
1360 cmd.args[0x02] = (state->dcur.frequency & 0x00ff00) >> 8;
1361 cmd.args[0x03] = (state->dcur.frequency & 0x0000ff);
1362
1363 /* Symbol Rate */
1364 cmd.args[0x04] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1365 cmd.args[0x05] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1366
1367 /* Automatic Inversion */
1368 cmd.args[0x06] = state->dcur.inversion_val;
1369
1370 /* Modulation / FEC / Pilot */
1371 cmd.args[0x07] = state->dcur.fec_val | state->dcur.pilot_val;
1372
1373 cmd.args[0x08] = CX24116_SEARCH_RANGE_KHZ >> 8;
1374 cmd.args[0x09] = CX24116_SEARCH_RANGE_KHZ & 0xff;
1375 cmd.args[0x0a] = 0x00;
1376 cmd.args[0x0b] = 0x00;
1377 cmd.args[0x0c] = state->dcur.rolloff_val;
1378 cmd.args[0x0d] = state->dcur.fec_mask;
1379
1380 if (state->dcur.symbol_rate > 30000000) {
1381 cmd.args[0x0e] = 0x04;
1382 cmd.args[0x0f] = 0x00;
1383 cmd.args[0x10] = 0x01;
1384 cmd.args[0x11] = 0x77;
1385 cmd.args[0x12] = 0x36;
1386 cx24116_writereg(state, CX24116_REG_CLKDIV, 0x44);
1387 cx24116_writereg(state, CX24116_REG_RATEDIV, 0x01);
1388 } else {
1389 cmd.args[0x0e] = 0x06;
1390 cmd.args[0x0f] = 0x00;
1391 cmd.args[0x10] = 0x00;
1392 cmd.args[0x11] = 0xFA;
1393 cmd.args[0x12] = 0x24;
1394 cx24116_writereg(state, CX24116_REG_CLKDIV, 0x46);
1395 cx24116_writereg(state, CX24116_REG_RATEDIV, 0x00);
1396 }
1397
1398 cmd.len = 0x13;
1399
1400 /* We need to support pilot and non-pilot tuning in the
1401 * driver automatically. This is a workaround for because
1402 * the demod does not support autodetect.
1403 */
1404 do {
1405 /* Reset status register */
1406 status = cx24116_readreg(state, CX24116_REG_SSTATUS)
1407 & CX24116_SIGNAL_MASK;
1408 cx24116_writereg(state, CX24116_REG_SSTATUS, status);
1409
1410 /* Tune */
1411 ret = cx24116_cmd_execute(fe, &cmd);
1412 if (ret != 0)
1413 break;
1414
1415 /*
1416 * Wait for up to 500 ms before retrying
1417 *
1418 * If we are able to tune then generally it occurs within 100ms.
1419 * If it takes longer, try a different toneburst setting.
1420 */
1421 for (i = 0; i < 50 ; i++) {
1422 cx24116_read_status(fe, &tunerstat);
1423 status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1424 if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1425 dprintk("%s: Tuned\n", __func__);
1426 goto tuned;
1427 }
1428 msleep(10);
1429 }
1430
1431 dprintk("%s: Not tuned\n", __func__);
1432
1433 /* Toggle pilot bit when in auto-pilot */
1434 if (state->dcur.pilot == PILOT_AUTO)
1435 cmd.args[0x07] ^= CX24116_PILOT_ON;
1436 } while (--retune);
1437
1438 tuned: /* Set/Reset B/W */
1439 cmd.args[0x00] = CMD_BANDWIDTH;
1440 cmd.args[0x01] = 0x00;
1441 cmd.len = 0x02;
1442 ret = cx24116_cmd_execute(fe, &cmd);
1443 if (ret != 0)
1444 return ret;
1445
1446 return ret;
1447 }
1448
1449 static int cx24116_tune(struct dvb_frontend *fe, struct dvb_frontend_parameters *params,
1450 unsigned int mode_flags, unsigned int *delay, fe_status_t *status)
1451 {
1452 *delay = HZ / 5;
1453 if (params) {
1454 int ret = cx24116_set_frontend(fe, params);
1455 if (ret)
1456 return ret;
1457 }
1458 return cx24116_read_status(fe, status);
1459 }
1460
1461 static int cx24116_get_algo(struct dvb_frontend *fe)
1462 {
1463 return DVBFE_ALGO_HW;
1464 }
1465
1466 static struct dvb_frontend_ops cx24116_ops = {
1467
1468 .info = {
1469 .name = "Conexant CX24116/CX24118",
1470 .type = FE_QPSK,
1471 .frequency_min = 950000,
1472 .frequency_max = 2150000,
1473 .frequency_stepsize = 1011, /* kHz for QPSK frontends */
1474 .frequency_tolerance = 5000,
1475 .symbol_rate_min = 1000000,
1476 .symbol_rate_max = 45000000,
1477 .caps = FE_CAN_INVERSION_AUTO |
1478 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1479 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1480 FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1481 FE_CAN_2G_MODULATION |
1482 FE_CAN_QPSK | FE_CAN_RECOVER
1483 },
1484
1485 .release = cx24116_release,
1486
1487 .init = cx24116_initfe,
1488 .sleep = cx24116_sleep,
1489 .read_status = cx24116_read_status,
1490 .read_ber = cx24116_read_ber,
1491 .read_signal_strength = cx24116_read_signal_strength,
1492 .read_snr = cx24116_read_snr,
1493 .read_ucblocks = cx24116_read_ucblocks,
1494 .set_tone = cx24116_set_tone,
1495 .set_voltage = cx24116_set_voltage,
1496 .diseqc_send_master_cmd = cx24116_send_diseqc_msg,
1497 .diseqc_send_burst = cx24116_diseqc_send_burst,
1498 .get_frontend_algo = cx24116_get_algo,
1499 .tune = cx24116_tune,
1500
1501 .set_property = cx24116_set_property,
1502 .get_property = cx24116_get_property,
1503 .set_frontend = cx24116_set_frontend,
1504 };
1505
1506 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24116/cx24118 hardware");
1507 MODULE_AUTHOR("Steven Toth");
1508 MODULE_LICENSE("GPL");
1509
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