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(esno_snr, "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
cx24116_writereg(struct cx24116_state * state,int reg,int data)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 */
cx24116_writeregN(struct cx24116_state * state,int reg,const u8 * data,u16 len)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
cx24116_readreg(struct cx24116_state * state,u8 reg)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
cx24116_set_inversion(struct cx24116_state * state,fe_spectral_inversion_t inversion)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
cx24116_lookup_fecmod(struct cx24116_state * state,fe_delivery_system_t d,fe_modulation_t m,fe_code_rate_t f)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
cx24116_set_fec(struct cx24116_state * state,fe_delivery_system_t delsys,fe_modulation_t mod,fe_code_rate_t fec)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
cx24116_set_symbolrate(struct cx24116_state * state,u32 rate)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
cx24116_firmware_ondemand(struct dvb_frontend * fe)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.parent);
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 */
cx24116_cmd_execute(struct dvb_frontend * fe,struct cx24116_cmd * cmd)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
cx24116_load_firmware(struct dvb_frontend * fe,const struct firmware * fw)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, len, max, remaining;
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 /* Split firmware to the max I2C write len and write.
607 * Writes whole firmware as one write when i2c_wr_max is set to 0. */
608 if (state->config->i2c_wr_max)
609 max = state->config->i2c_wr_max;
610 else
611 max = INT_MAX; /* enough for 32k firmware */
612
613 for (remaining = fw->size; remaining > 0; remaining -= max - 1) {
614 len = remaining;
615 if (len > max - 1)
616 len = max - 1;
617
618 cx24116_writeregN(state, 0xF7, &fw->data[fw->size - remaining],
619 len);
620 }
621
622 cx24116_writereg(state, 0xF4, 0x10);
623 cx24116_writereg(state, 0xF0, 0x00);
624 cx24116_writereg(state, 0xF8, 0x06);
625
626 /* Firmware CMD 10: VCO config */
627 cmd.args[0x00] = CMD_SET_VCO;
628 cmd.args[0x01] = 0x05;
629 cmd.args[0x02] = 0xdc;
630 cmd.args[0x03] = 0xda;
631 cmd.args[0x04] = 0xae;
632 cmd.args[0x05] = 0xaa;
633 cmd.args[0x06] = 0x04;
634 cmd.args[0x07] = 0x9d;
635 cmd.args[0x08] = 0xfc;
636 cmd.args[0x09] = 0x06;
637 cmd.len = 0x0a;
638 ret = cx24116_cmd_execute(fe, &cmd);
639 if (ret != 0)
640 return ret;
641
642 cx24116_writereg(state, CX24116_REG_SSTATUS, 0x00);
643
644 /* Firmware CMD 14: Tuner config */
645 cmd.args[0x00] = CMD_TUNERINIT;
646 cmd.args[0x01] = 0x00;
647 cmd.args[0x02] = 0x00;
648 cmd.len = 0x03;
649 ret = cx24116_cmd_execute(fe, &cmd);
650 if (ret != 0)
651 return ret;
652
653 cx24116_writereg(state, 0xe5, 0x00);
654
655 /* Firmware CMD 13: MPEG config */
656 cmd.args[0x00] = CMD_MPEGCONFIG;
657 cmd.args[0x01] = 0x01;
658 cmd.args[0x02] = 0x75;
659 cmd.args[0x03] = 0x00;
660 if (state->config->mpg_clk_pos_pol)
661 cmd.args[0x04] = state->config->mpg_clk_pos_pol;
662 else
663 cmd.args[0x04] = 0x02;
664 cmd.args[0x05] = 0x00;
665 cmd.len = 0x06;
666 ret = cx24116_cmd_execute(fe, &cmd);
667 if (ret != 0)
668 return ret;
669
670 /* Firmware CMD 35: Get firmware version */
671 cmd.args[0x00] = CMD_UPDFWVERS;
672 cmd.len = 0x02;
673 for (i = 0; i < 4; i++) {
674 cmd.args[0x01] = i;
675 ret = cx24116_cmd_execute(fe, &cmd);
676 if (ret != 0)
677 return ret;
678 vers[i] = cx24116_readreg(state, CX24116_REG_MAILBOX);
679 }
680 printk(KERN_INFO "%s: FW version %i.%i.%i.%i\n", __func__,
681 vers[0], vers[1], vers[2], vers[3]);
682
683 return 0;
684 }
685
cx24116_read_status(struct dvb_frontend * fe,fe_status_t * status)686 static int cx24116_read_status(struct dvb_frontend *fe, fe_status_t *status)
687 {
688 struct cx24116_state *state = fe->demodulator_priv;
689
690 int lock = cx24116_readreg(state, CX24116_REG_SSTATUS) &
691 CX24116_STATUS_MASK;
692
693 dprintk("%s: status = 0x%02x\n", __func__, lock);
694
695 *status = 0;
696
697 if (lock & CX24116_HAS_SIGNAL)
698 *status |= FE_HAS_SIGNAL;
699 if (lock & CX24116_HAS_CARRIER)
700 *status |= FE_HAS_CARRIER;
701 if (lock & CX24116_HAS_VITERBI)
702 *status |= FE_HAS_VITERBI;
703 if (lock & CX24116_HAS_SYNCLOCK)
704 *status |= FE_HAS_SYNC | FE_HAS_LOCK;
705
706 return 0;
707 }
708
cx24116_read_ber(struct dvb_frontend * fe,u32 * ber)709 static int cx24116_read_ber(struct dvb_frontend *fe, u32 *ber)
710 {
711 struct cx24116_state *state = fe->demodulator_priv;
712
713 dprintk("%s()\n", __func__);
714
715 *ber = (cx24116_readreg(state, CX24116_REG_BER24) << 24) |
716 (cx24116_readreg(state, CX24116_REG_BER16) << 16) |
717 (cx24116_readreg(state, CX24116_REG_BER8) << 8) |
718 cx24116_readreg(state, CX24116_REG_BER0);
719
720 return 0;
721 }
722
723 /* TODO Determine function and scale appropriately */
cx24116_read_signal_strength(struct dvb_frontend * fe,u16 * signal_strength)724 static int cx24116_read_signal_strength(struct dvb_frontend *fe,
725 u16 *signal_strength)
726 {
727 struct cx24116_state *state = fe->demodulator_priv;
728 struct cx24116_cmd cmd;
729 int ret;
730 u16 sig_reading;
731
732 dprintk("%s()\n", __func__);
733
734 /* Firmware CMD 19: Get AGC */
735 cmd.args[0x00] = CMD_GETAGC;
736 cmd.len = 0x01;
737 ret = cx24116_cmd_execute(fe, &cmd);
738 if (ret != 0)
739 return ret;
740
741 sig_reading =
742 (cx24116_readreg(state,
743 CX24116_REG_SSTATUS) & CX24116_SIGNAL_MASK) |
744 (cx24116_readreg(state, CX24116_REG_SIGNAL) << 6);
745 *signal_strength = 0 - sig_reading;
746
747 dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n",
748 __func__, sig_reading, *signal_strength);
749
750 return 0;
751 }
752
753 /* SNR (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */
cx24116_read_snr_pct(struct dvb_frontend * fe,u16 * snr)754 static int cx24116_read_snr_pct(struct dvb_frontend *fe, u16 *snr)
755 {
756 struct cx24116_state *state = fe->demodulator_priv;
757 u8 snr_reading;
758 static const u32 snr_tab[] = { /* 10 x Table (rounded up) */
759 0x00000, 0x0199A, 0x03333, 0x04ccD, 0x06667,
760 0x08000, 0x0999A, 0x0b333, 0x0cccD, 0x0e667,
761 0x10000, 0x1199A, 0x13333, 0x14ccD, 0x16667,
762 0x18000 };
763
764 dprintk("%s()\n", __func__);
765
766 snr_reading = cx24116_readreg(state, CX24116_REG_QUALITY0);
767
768 if (snr_reading >= 0xa0 /* 100% */)
769 *snr = 0xffff;
770 else
771 *snr = snr_tab[(snr_reading & 0xf0) >> 4] +
772 (snr_tab[(snr_reading & 0x0f)] >> 4);
773
774 dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n", __func__,
775 snr_reading, *snr);
776
777 return 0;
778 }
779
780 /* The reelbox patches show the value in the registers represents
781 * ESNO, from 0->30db (values 0->300). We provide this value by
782 * default.
783 */
cx24116_read_snr_esno(struct dvb_frontend * fe,u16 * snr)784 static int cx24116_read_snr_esno(struct dvb_frontend *fe, u16 *snr)
785 {
786 struct cx24116_state *state = fe->demodulator_priv;
787
788 dprintk("%s()\n", __func__);
789
790 *snr = cx24116_readreg(state, CX24116_REG_QUALITY8) << 8 |
791 cx24116_readreg(state, CX24116_REG_QUALITY0);
792
793 dprintk("%s: raw 0x%04x\n", __func__, *snr);
794
795 return 0;
796 }
797
cx24116_read_snr(struct dvb_frontend * fe,u16 * snr)798 static int cx24116_read_snr(struct dvb_frontend *fe, u16 *snr)
799 {
800 if (esno_snr == 1)
801 return cx24116_read_snr_esno(fe, snr);
802 else
803 return cx24116_read_snr_pct(fe, snr);
804 }
805
cx24116_read_ucblocks(struct dvb_frontend * fe,u32 * ucblocks)806 static int cx24116_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
807 {
808 struct cx24116_state *state = fe->demodulator_priv;
809
810 dprintk("%s()\n", __func__);
811
812 *ucblocks = (cx24116_readreg(state, CX24116_REG_UCB8) << 8) |
813 cx24116_readreg(state, CX24116_REG_UCB0);
814
815 return 0;
816 }
817
818 /* Overwrite the current tuning params, we are about to tune */
cx24116_clone_params(struct dvb_frontend * fe)819 static void cx24116_clone_params(struct dvb_frontend *fe)
820 {
821 struct cx24116_state *state = fe->demodulator_priv;
822 memcpy(&state->dcur, &state->dnxt, sizeof(state->dcur));
823 }
824
825 /* Wait for LNB */
cx24116_wait_for_lnb(struct dvb_frontend * fe)826 static int cx24116_wait_for_lnb(struct dvb_frontend *fe)
827 {
828 struct cx24116_state *state = fe->demodulator_priv;
829 int i;
830
831 dprintk("%s() qstatus = 0x%02x\n", __func__,
832 cx24116_readreg(state, CX24116_REG_QSTATUS));
833
834 /* Wait for up to 300 ms */
835 for (i = 0; i < 30 ; i++) {
836 if (cx24116_readreg(state, CX24116_REG_QSTATUS) & 0x20)
837 return 0;
838 msleep(10);
839 }
840
841 dprintk("%s(): LNB not ready\n", __func__);
842
843 return -ETIMEDOUT; /* -EBUSY ? */
844 }
845
cx24116_set_voltage(struct dvb_frontend * fe,fe_sec_voltage_t voltage)846 static int cx24116_set_voltage(struct dvb_frontend *fe,
847 fe_sec_voltage_t voltage)
848 {
849 struct cx24116_cmd cmd;
850 int ret;
851
852 dprintk("%s: %s\n", __func__,
853 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
854 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
855
856 /* Wait for LNB ready */
857 ret = cx24116_wait_for_lnb(fe);
858 if (ret != 0)
859 return ret;
860
861 /* Wait for voltage/min repeat delay */
862 msleep(100);
863
864 cmd.args[0x00] = CMD_LNBDCLEVEL;
865 cmd.args[0x01] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
866 cmd.len = 0x02;
867
868 /* Min delay time before DiSEqC send */
869 msleep(15);
870
871 return cx24116_cmd_execute(fe, &cmd);
872 }
873
cx24116_set_tone(struct dvb_frontend * fe,fe_sec_tone_mode_t tone)874 static int cx24116_set_tone(struct dvb_frontend *fe,
875 fe_sec_tone_mode_t tone)
876 {
877 struct cx24116_cmd cmd;
878 int ret;
879
880 dprintk("%s(%d)\n", __func__, tone);
881 if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
882 printk(KERN_ERR "%s: Invalid, tone=%d\n", __func__, tone);
883 return -EINVAL;
884 }
885
886 /* Wait for LNB ready */
887 ret = cx24116_wait_for_lnb(fe);
888 if (ret != 0)
889 return ret;
890
891 /* Min delay time after DiSEqC send */
892 msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */
893
894 /* Now we set the tone */
895 cmd.args[0x00] = CMD_SET_TONE;
896 cmd.args[0x01] = 0x00;
897 cmd.args[0x02] = 0x00;
898
899 switch (tone) {
900 case SEC_TONE_ON:
901 dprintk("%s: setting tone on\n", __func__);
902 cmd.args[0x03] = 0x01;
903 break;
904 case SEC_TONE_OFF:
905 dprintk("%s: setting tone off\n", __func__);
906 cmd.args[0x03] = 0x00;
907 break;
908 }
909 cmd.len = 0x04;
910
911 /* Min delay time before DiSEqC send */
912 msleep(15); /* XXX determine is FW does this, see send_diseqc/burst */
913
914 return cx24116_cmd_execute(fe, &cmd);
915 }
916
917 /* Initialise DiSEqC */
cx24116_diseqc_init(struct dvb_frontend * fe)918 static int cx24116_diseqc_init(struct dvb_frontend *fe)
919 {
920 struct cx24116_state *state = fe->demodulator_priv;
921 struct cx24116_cmd cmd;
922 int ret;
923
924 /* Firmware CMD 20: LNB/DiSEqC config */
925 cmd.args[0x00] = CMD_LNBCONFIG;
926 cmd.args[0x01] = 0x00;
927 cmd.args[0x02] = 0x10;
928 cmd.args[0x03] = 0x00;
929 cmd.args[0x04] = 0x8f;
930 cmd.args[0x05] = 0x28;
931 cmd.args[0x06] = (toneburst == CX24116_DISEQC_TONEOFF) ? 0x00 : 0x01;
932 cmd.args[0x07] = 0x01;
933 cmd.len = 0x08;
934 ret = cx24116_cmd_execute(fe, &cmd);
935 if (ret != 0)
936 return ret;
937
938 /* Prepare a DiSEqC command */
939 state->dsec_cmd.args[0x00] = CMD_LNBSEND;
940
941 /* DiSEqC burst */
942 state->dsec_cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A;
943
944 /* Unknown */
945 state->dsec_cmd.args[CX24116_DISEQC_ARG2_2] = 0x02;
946 state->dsec_cmd.args[CX24116_DISEQC_ARG3_0] = 0x00;
947 /* Continuation flag? */
948 state->dsec_cmd.args[CX24116_DISEQC_ARG4_0] = 0x00;
949
950 /* DiSEqC message length */
951 state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = 0x00;
952
953 /* Command length */
954 state->dsec_cmd.len = CX24116_DISEQC_MSGOFS;
955
956 return 0;
957 }
958
959 /* Send DiSEqC message with derived burst (hack) || previous burst */
cx24116_send_diseqc_msg(struct dvb_frontend * fe,struct dvb_diseqc_master_cmd * d)960 static int cx24116_send_diseqc_msg(struct dvb_frontend *fe,
961 struct dvb_diseqc_master_cmd *d)
962 {
963 struct cx24116_state *state = fe->demodulator_priv;
964 int i, ret;
965
966 /* Dump DiSEqC message */
967 if (debug) {
968 printk(KERN_INFO "cx24116: %s(", __func__);
969 for (i = 0 ; i < d->msg_len ;) {
970 printk(KERN_INFO "0x%02x", d->msg[i]);
971 if (++i < d->msg_len)
972 printk(KERN_INFO ", ");
973 }
974 printk(") toneburst=%d\n", toneburst);
975 }
976
977 /* Validate length */
978 if (d->msg_len > (CX24116_ARGLEN - CX24116_DISEQC_MSGOFS))
979 return -EINVAL;
980
981 /* DiSEqC message */
982 for (i = 0; i < d->msg_len; i++)
983 state->dsec_cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i];
984
985 /* DiSEqC message length */
986 state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len;
987
988 /* Command length */
989 state->dsec_cmd.len = CX24116_DISEQC_MSGOFS +
990 state->dsec_cmd.args[CX24116_DISEQC_MSGLEN];
991
992 /* DiSEqC toneburst */
993 if (toneburst == CX24116_DISEQC_MESGCACHE)
994 /* Message is cached */
995 return 0;
996
997 else if (toneburst == CX24116_DISEQC_TONEOFF)
998 /* Message is sent without burst */
999 state->dsec_cmd.args[CX24116_DISEQC_BURST] = 0;
1000
1001 else if (toneburst == CX24116_DISEQC_TONECACHE) {
1002 /*
1003 * Message is sent with derived else cached burst
1004 *
1005 * WRITE PORT GROUP COMMAND 38
1006 *
1007 * 0/A/A: E0 10 38 F0..F3
1008 * 1/B/B: E0 10 38 F4..F7
1009 * 2/C/A: E0 10 38 F8..FB
1010 * 3/D/B: E0 10 38 FC..FF
1011 *
1012 * databyte[3]= 8421:8421
1013 * ABCD:WXYZ
1014 * CLR :SET
1015 *
1016 * WX= PORT SELECT 0..3 (X=TONEBURST)
1017 * Y = VOLTAGE (0=13V, 1=18V)
1018 * Z = BAND (0=LOW, 1=HIGH(22K))
1019 */
1020 if (d->msg_len >= 4 && d->msg[2] == 0x38)
1021 state->dsec_cmd.args[CX24116_DISEQC_BURST] =
1022 ((d->msg[3] & 4) >> 2);
1023 if (debug)
1024 dprintk("%s burst=%d\n", __func__,
1025 state->dsec_cmd.args[CX24116_DISEQC_BURST]);
1026 }
1027
1028 /* Wait for LNB ready */
1029 ret = cx24116_wait_for_lnb(fe);
1030 if (ret != 0)
1031 return ret;
1032
1033 /* Wait for voltage/min repeat delay */
1034 msleep(100);
1035
1036 /* Command */
1037 ret = cx24116_cmd_execute(fe, &state->dsec_cmd);
1038 if (ret != 0)
1039 return ret;
1040 /*
1041 * Wait for send
1042 *
1043 * Eutelsat spec:
1044 * >15ms delay + (XXX determine if FW does this, see set_tone)
1045 * 13.5ms per byte +
1046 * >15ms delay +
1047 * 12.5ms burst +
1048 * >15ms delay (XXX determine if FW does this, see set_tone)
1049 */
1050 msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4) +
1051 ((toneburst == CX24116_DISEQC_TONEOFF) ? 30 : 60));
1052
1053 return 0;
1054 }
1055
1056 /* Send DiSEqC burst */
cx24116_diseqc_send_burst(struct dvb_frontend * fe,fe_sec_mini_cmd_t burst)1057 static int cx24116_diseqc_send_burst(struct dvb_frontend *fe,
1058 fe_sec_mini_cmd_t burst)
1059 {
1060 struct cx24116_state *state = fe->demodulator_priv;
1061 int ret;
1062
1063 dprintk("%s(%d) toneburst=%d\n", __func__, burst, toneburst);
1064
1065 /* DiSEqC burst */
1066 if (burst == SEC_MINI_A)
1067 state->dsec_cmd.args[CX24116_DISEQC_BURST] =
1068 CX24116_DISEQC_MINI_A;
1069 else if (burst == SEC_MINI_B)
1070 state->dsec_cmd.args[CX24116_DISEQC_BURST] =
1071 CX24116_DISEQC_MINI_B;
1072 else
1073 return -EINVAL;
1074
1075 /* DiSEqC toneburst */
1076 if (toneburst != CX24116_DISEQC_MESGCACHE)
1077 /* Burst is cached */
1078 return 0;
1079
1080 /* Burst is to be sent with cached message */
1081
1082 /* Wait for LNB ready */
1083 ret = cx24116_wait_for_lnb(fe);
1084 if (ret != 0)
1085 return ret;
1086
1087 /* Wait for voltage/min repeat delay */
1088 msleep(100);
1089
1090 /* Command */
1091 ret = cx24116_cmd_execute(fe, &state->dsec_cmd);
1092 if (ret != 0)
1093 return ret;
1094
1095 /*
1096 * Wait for send
1097 *
1098 * Eutelsat spec:
1099 * >15ms delay + (XXX determine if FW does this, see set_tone)
1100 * 13.5ms per byte +
1101 * >15ms delay +
1102 * 12.5ms burst +
1103 * >15ms delay (XXX determine if FW does this, see set_tone)
1104 */
1105 msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4) + 60);
1106
1107 return 0;
1108 }
1109
cx24116_release(struct dvb_frontend * fe)1110 static void cx24116_release(struct dvb_frontend *fe)
1111 {
1112 struct cx24116_state *state = fe->demodulator_priv;
1113 dprintk("%s\n", __func__);
1114 kfree(state);
1115 }
1116
1117 static struct dvb_frontend_ops cx24116_ops;
1118
cx24116_attach(const struct cx24116_config * config,struct i2c_adapter * i2c)1119 struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
1120 struct i2c_adapter *i2c)
1121 {
1122 struct cx24116_state *state = NULL;
1123 int ret;
1124
1125 dprintk("%s\n", __func__);
1126
1127 /* allocate memory for the internal state */
1128 state = kzalloc(sizeof(struct cx24116_state), GFP_KERNEL);
1129 if (state == NULL)
1130 goto error1;
1131
1132 state->config = config;
1133 state->i2c = i2c;
1134
1135 /* check if the demod is present */
1136 ret = (cx24116_readreg(state, 0xFF) << 8) |
1137 cx24116_readreg(state, 0xFE);
1138 if (ret != 0x0501) {
1139 printk(KERN_INFO "Invalid probe, probably not a CX24116 device\n");
1140 goto error2;
1141 }
1142
1143 /* create dvb_frontend */
1144 memcpy(&state->frontend.ops, &cx24116_ops,
1145 sizeof(struct dvb_frontend_ops));
1146 state->frontend.demodulator_priv = state;
1147 return &state->frontend;
1148
1149 error2: kfree(state);
1150 error1: return NULL;
1151 }
1152 EXPORT_SYMBOL(cx24116_attach);
1153
1154 /*
1155 * Initialise or wake up device
1156 *
1157 * Power config will reset and load initial firmware if required
1158 */
cx24116_initfe(struct dvb_frontend * fe)1159 static int cx24116_initfe(struct dvb_frontend *fe)
1160 {
1161 struct cx24116_state *state = fe->demodulator_priv;
1162 struct cx24116_cmd cmd;
1163 int ret;
1164
1165 dprintk("%s()\n", __func__);
1166
1167 /* Power on */
1168 cx24116_writereg(state, 0xe0, 0);
1169 cx24116_writereg(state, 0xe1, 0);
1170 cx24116_writereg(state, 0xea, 0);
1171
1172 /* Firmware CMD 36: Power config */
1173 cmd.args[0x00] = CMD_TUNERSLEEP;
1174 cmd.args[0x01] = 0;
1175 cmd.len = 0x02;
1176 ret = cx24116_cmd_execute(fe, &cmd);
1177 if (ret != 0)
1178 return ret;
1179
1180 ret = cx24116_diseqc_init(fe);
1181 if (ret != 0)
1182 return ret;
1183
1184 /* HVR-4000 needs this */
1185 return cx24116_set_voltage(fe, SEC_VOLTAGE_13);
1186 }
1187
1188 /*
1189 * Put device to sleep
1190 */
cx24116_sleep(struct dvb_frontend * fe)1191 static int cx24116_sleep(struct dvb_frontend *fe)
1192 {
1193 struct cx24116_state *state = fe->demodulator_priv;
1194 struct cx24116_cmd cmd;
1195 int ret;
1196
1197 dprintk("%s()\n", __func__);
1198
1199 /* Firmware CMD 36: Power config */
1200 cmd.args[0x00] = CMD_TUNERSLEEP;
1201 cmd.args[0x01] = 1;
1202 cmd.len = 0x02;
1203 ret = cx24116_cmd_execute(fe, &cmd);
1204 if (ret != 0)
1205 return ret;
1206
1207 /* Power off (Shutdown clocks) */
1208 cx24116_writereg(state, 0xea, 0xff);
1209 cx24116_writereg(state, 0xe1, 1);
1210 cx24116_writereg(state, 0xe0, 1);
1211
1212 return 0;
1213 }
1214
1215 /* dvb-core told us to tune, the tv property cache will be complete,
1216 * it's safe for is to pull values and use them for tuning purposes.
1217 */
cx24116_set_frontend(struct dvb_frontend * fe)1218 static int cx24116_set_frontend(struct dvb_frontend *fe)
1219 {
1220 struct cx24116_state *state = fe->demodulator_priv;
1221 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1222 struct cx24116_cmd cmd;
1223 fe_status_t tunerstat;
1224 int i, status, ret, retune = 1;
1225
1226 dprintk("%s()\n", __func__);
1227
1228 switch (c->delivery_system) {
1229 case SYS_DVBS:
1230 dprintk("%s: DVB-S delivery system selected\n", __func__);
1231
1232 /* Only QPSK is supported for DVB-S */
1233 if (c->modulation != QPSK) {
1234 dprintk("%s: unsupported modulation selected (%d)\n",
1235 __func__, c->modulation);
1236 return -EOPNOTSUPP;
1237 }
1238
1239 /* Pilot doesn't exist in DVB-S, turn bit off */
1240 state->dnxt.pilot_val = CX24116_PILOT_OFF;
1241
1242 /* DVB-S only supports 0.35 */
1243 if (c->rolloff != ROLLOFF_35) {
1244 dprintk("%s: unsupported rolloff selected (%d)\n",
1245 __func__, c->rolloff);
1246 return -EOPNOTSUPP;
1247 }
1248 state->dnxt.rolloff_val = CX24116_ROLLOFF_035;
1249 break;
1250
1251 case SYS_DVBS2:
1252 dprintk("%s: DVB-S2 delivery system selected\n", __func__);
1253
1254 /*
1255 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1256 * but not hardware auto detection
1257 */
1258 if (c->modulation != PSK_8 && c->modulation != QPSK) {
1259 dprintk("%s: unsupported modulation selected (%d)\n",
1260 __func__, c->modulation);
1261 return -EOPNOTSUPP;
1262 }
1263
1264 switch (c->pilot) {
1265 case PILOT_AUTO: /* Not supported but emulated */
1266 state->dnxt.pilot_val = (c->modulation == QPSK)
1267 ? CX24116_PILOT_OFF : CX24116_PILOT_ON;
1268 retune++;
1269 break;
1270 case PILOT_OFF:
1271 state->dnxt.pilot_val = CX24116_PILOT_OFF;
1272 break;
1273 case PILOT_ON:
1274 state->dnxt.pilot_val = CX24116_PILOT_ON;
1275 break;
1276 default:
1277 dprintk("%s: unsupported pilot mode selected (%d)\n",
1278 __func__, c->pilot);
1279 return -EOPNOTSUPP;
1280 }
1281
1282 switch (c->rolloff) {
1283 case ROLLOFF_20:
1284 state->dnxt.rolloff_val = CX24116_ROLLOFF_020;
1285 break;
1286 case ROLLOFF_25:
1287 state->dnxt.rolloff_val = CX24116_ROLLOFF_025;
1288 break;
1289 case ROLLOFF_35:
1290 state->dnxt.rolloff_val = CX24116_ROLLOFF_035;
1291 break;
1292 case ROLLOFF_AUTO: /* Rolloff must be explicit */
1293 default:
1294 dprintk("%s: unsupported rolloff selected (%d)\n",
1295 __func__, c->rolloff);
1296 return -EOPNOTSUPP;
1297 }
1298 break;
1299
1300 default:
1301 dprintk("%s: unsupported delivery system selected (%d)\n",
1302 __func__, c->delivery_system);
1303 return -EOPNOTSUPP;
1304 }
1305 state->dnxt.delsys = c->delivery_system;
1306 state->dnxt.modulation = c->modulation;
1307 state->dnxt.frequency = c->frequency;
1308 state->dnxt.pilot = c->pilot;
1309 state->dnxt.rolloff = c->rolloff;
1310
1311 ret = cx24116_set_inversion(state, c->inversion);
1312 if (ret != 0)
1313 return ret;
1314
1315 /* FEC_NONE/AUTO for DVB-S2 is not supported and detected here */
1316 ret = cx24116_set_fec(state, c->delivery_system, c->modulation, c->fec_inner);
1317 if (ret != 0)
1318 return ret;
1319
1320 ret = cx24116_set_symbolrate(state, c->symbol_rate);
1321 if (ret != 0)
1322 return ret;
1323
1324 /* discard the 'current' tuning parameters and prepare to tune */
1325 cx24116_clone_params(fe);
1326
1327 dprintk("%s: delsys = %d\n", __func__, state->dcur.delsys);
1328 dprintk("%s: modulation = %d\n", __func__, state->dcur.modulation);
1329 dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency);
1330 dprintk("%s: pilot = %d (val = 0x%02x)\n", __func__,
1331 state->dcur.pilot, state->dcur.pilot_val);
1332 dprintk("%s: retune = %d\n", __func__, retune);
1333 dprintk("%s: rolloff = %d (val = 0x%02x)\n", __func__,
1334 state->dcur.rolloff, state->dcur.rolloff_val);
1335 dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1336 dprintk("%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1337 state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1338 dprintk("%s: Inversion = %d (val = 0x%02x)\n", __func__,
1339 state->dcur.inversion, state->dcur.inversion_val);
1340
1341 /* This is also done in advise/acquire on HVR4000 but not on LITE */
1342 if (state->config->set_ts_params)
1343 state->config->set_ts_params(fe, 0);
1344
1345 /* Set/Reset B/W */
1346 cmd.args[0x00] = CMD_BANDWIDTH;
1347 cmd.args[0x01] = 0x01;
1348 cmd.len = 0x02;
1349 ret = cx24116_cmd_execute(fe, &cmd);
1350 if (ret != 0)
1351 return ret;
1352
1353 /* Prepare a tune request */
1354 cmd.args[0x00] = CMD_TUNEREQUEST;
1355
1356 /* Frequency */
1357 cmd.args[0x01] = (state->dcur.frequency & 0xff0000) >> 16;
1358 cmd.args[0x02] = (state->dcur.frequency & 0x00ff00) >> 8;
1359 cmd.args[0x03] = (state->dcur.frequency & 0x0000ff);
1360
1361 /* Symbol Rate */
1362 cmd.args[0x04] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1363 cmd.args[0x05] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1364
1365 /* Automatic Inversion */
1366 cmd.args[0x06] = state->dcur.inversion_val;
1367
1368 /* Modulation / FEC / Pilot */
1369 cmd.args[0x07] = state->dcur.fec_val | state->dcur.pilot_val;
1370
1371 cmd.args[0x08] = CX24116_SEARCH_RANGE_KHZ >> 8;
1372 cmd.args[0x09] = CX24116_SEARCH_RANGE_KHZ & 0xff;
1373 cmd.args[0x0a] = 0x00;
1374 cmd.args[0x0b] = 0x00;
1375 cmd.args[0x0c] = state->dcur.rolloff_val;
1376 cmd.args[0x0d] = state->dcur.fec_mask;
1377
1378 if (state->dcur.symbol_rate > 30000000) {
1379 cmd.args[0x0e] = 0x04;
1380 cmd.args[0x0f] = 0x00;
1381 cmd.args[0x10] = 0x01;
1382 cmd.args[0x11] = 0x77;
1383 cmd.args[0x12] = 0x36;
1384 cx24116_writereg(state, CX24116_REG_CLKDIV, 0x44);
1385 cx24116_writereg(state, CX24116_REG_RATEDIV, 0x01);
1386 } else {
1387 cmd.args[0x0e] = 0x06;
1388 cmd.args[0x0f] = 0x00;
1389 cmd.args[0x10] = 0x00;
1390 cmd.args[0x11] = 0xFA;
1391 cmd.args[0x12] = 0x24;
1392 cx24116_writereg(state, CX24116_REG_CLKDIV, 0x46);
1393 cx24116_writereg(state, CX24116_REG_RATEDIV, 0x00);
1394 }
1395
1396 cmd.len = 0x13;
1397
1398 /* We need to support pilot and non-pilot tuning in the
1399 * driver automatically. This is a workaround for because
1400 * the demod does not support autodetect.
1401 */
1402 do {
1403 /* Reset status register */
1404 status = cx24116_readreg(state, CX24116_REG_SSTATUS)
1405 & CX24116_SIGNAL_MASK;
1406 cx24116_writereg(state, CX24116_REG_SSTATUS, status);
1407
1408 /* Tune */
1409 ret = cx24116_cmd_execute(fe, &cmd);
1410 if (ret != 0)
1411 break;
1412
1413 /*
1414 * Wait for up to 500 ms before retrying
1415 *
1416 * If we are able to tune then generally it occurs within 100ms.
1417 * If it takes longer, try a different toneburst setting.
1418 */
1419 for (i = 0; i < 50 ; i++) {
1420 cx24116_read_status(fe, &tunerstat);
1421 status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1422 if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1423 dprintk("%s: Tuned\n", __func__);
1424 goto tuned;
1425 }
1426 msleep(10);
1427 }
1428
1429 dprintk("%s: Not tuned\n", __func__);
1430
1431 /* Toggle pilot bit when in auto-pilot */
1432 if (state->dcur.pilot == PILOT_AUTO)
1433 cmd.args[0x07] ^= CX24116_PILOT_ON;
1434 } while (--retune);
1435
1436 tuned: /* Set/Reset B/W */
1437 cmd.args[0x00] = CMD_BANDWIDTH;
1438 cmd.args[0x01] = 0x00;
1439 cmd.len = 0x02;
1440 return cx24116_cmd_execute(fe, &cmd);
1441 }
1442
cx24116_tune(struct dvb_frontend * fe,bool re_tune,unsigned int mode_flags,unsigned int * delay,fe_status_t * status)1443 static int cx24116_tune(struct dvb_frontend *fe, bool re_tune,
1444 unsigned int mode_flags, unsigned int *delay, fe_status_t *status)
1445 {
1446 /*
1447 * It is safe to discard "params" here, as the DVB core will sync
1448 * fe->dtv_property_cache with fepriv->parameters_in, where the
1449 * DVBv3 params are stored. The only practical usage for it indicate
1450 * that re-tuning is needed, e. g. (fepriv->state & FESTATE_RETUNE) is
1451 * true.
1452 */
1453
1454 *delay = HZ / 5;
1455 if (re_tune) {
1456 int ret = cx24116_set_frontend(fe);
1457 if (ret)
1458 return ret;
1459 }
1460 return cx24116_read_status(fe, status);
1461 }
1462
cx24116_get_algo(struct dvb_frontend * fe)1463 static int cx24116_get_algo(struct dvb_frontend *fe)
1464 {
1465 return DVBFE_ALGO_HW;
1466 }
1467
1468 static struct dvb_frontend_ops cx24116_ops = {
1469 .delsys = { SYS_DVBS, SYS_DVBS2 },
1470 .info = {
1471 .name = "Conexant CX24116/CX24118",
1472 .frequency_min = 950000,
1473 .frequency_max = 2150000,
1474 .frequency_stepsize = 1011, /* kHz for QPSK frontends */
1475 .frequency_tolerance = 5000,
1476 .symbol_rate_min = 1000000,
1477 .symbol_rate_max = 45000000,
1478 .caps = FE_CAN_INVERSION_AUTO |
1479 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1480 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1481 FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1482 FE_CAN_2G_MODULATION |
1483 FE_CAN_QPSK | FE_CAN_RECOVER
1484 },
1485
1486 .release = cx24116_release,
1487
1488 .init = cx24116_initfe,
1489 .sleep = cx24116_sleep,
1490 .read_status = cx24116_read_status,
1491 .read_ber = cx24116_read_ber,
1492 .read_signal_strength = cx24116_read_signal_strength,
1493 .read_snr = cx24116_read_snr,
1494 .read_ucblocks = cx24116_read_ucblocks,
1495 .set_tone = cx24116_set_tone,
1496 .set_voltage = cx24116_set_voltage,
1497 .diseqc_send_master_cmd = cx24116_send_diseqc_msg,
1498 .diseqc_send_burst = cx24116_diseqc_send_burst,
1499 .get_frontend_algo = cx24116_get_algo,
1500 .tune = cx24116_tune,
1501
1502 .set_frontend = cx24116_set_frontend,
1503 };
1504
1505 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24116/cx24118 hardware");
1506 MODULE_AUTHOR("Steven Toth");
1507 MODULE_LICENSE("GPL");
1508
1509