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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / dvb-frontends / cx24117.c
blob9fccc906d85a4e71f27a6528edfe0536ca693827
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 Conexant cx24117/cx24132 - Dual DVBS/S2 Satellite demod/tuner driver
4
5 Copyright (C) 2013 Luis Alves <ljalvs@gmail.com>
6 July, 6th 2013
7 First release based on cx24116 driver by:
8 Steven Toth and Georg Acher, Darron Broad, Igor Liplianin
9 Cards currently supported:
10 TBS6980 - Dual DVBS/S2 PCIe card
11 TBS6981 - Dual DVBS/S2 PCIe card
12
13 */
14
15 #include <linux/slab.h>
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/init.h>
20 #include <linux/firmware.h>
21
22 #include "tuner-i2c.h"
23 #include <media/dvb_frontend.h>
24 #include "cx24117.h"
25
26
27 #define CX24117_DEFAULT_FIRMWARE "dvb-fe-cx24117.fw"
28 #define CX24117_SEARCH_RANGE_KHZ 5000
29
30 /* known registers */
31 #define CX24117_REG_COMMAND (0x00) /* command buffer */
32 #define CX24117_REG_EXECUTE (0x1f) /* execute command */
33
34 #define CX24117_REG_FREQ3_0 (0x34) /* frequency */
35 #define CX24117_REG_FREQ2_0 (0x35)
36 #define CX24117_REG_FREQ1_0 (0x36)
37 #define CX24117_REG_STATE0 (0x39)
38 #define CX24117_REG_SSTATUS0 (0x3a) /* demod0 signal high / status */
39 #define CX24117_REG_SIGNAL0 (0x3b)
40 #define CX24117_REG_FREQ5_0 (0x3c) /* +-freq */
41 #define CX24117_REG_FREQ6_0 (0x3d)
42 #define CX24117_REG_SRATE2_0 (0x3e) /* +- 1000 * srate */
43 #define CX24117_REG_SRATE1_0 (0x3f)
44 #define CX24117_REG_QUALITY2_0 (0x40)
45 #define CX24117_REG_QUALITY1_0 (0x41)
46
47 #define CX24117_REG_BER4_0 (0x47)
48 #define CX24117_REG_BER3_0 (0x48)
49 #define CX24117_REG_BER2_0 (0x49)
50 #define CX24117_REG_BER1_0 (0x4a)
51 #define CX24117_REG_DVBS_UCB2_0 (0x4b)
52 #define CX24117_REG_DVBS_UCB1_0 (0x4c)
53 #define CX24117_REG_DVBS2_UCB2_0 (0x50)
54 #define CX24117_REG_DVBS2_UCB1_0 (0x51)
55 #define CX24117_REG_QSTATUS0 (0x93)
56 #define CX24117_REG_CLKDIV0 (0xe6)
57 #define CX24117_REG_RATEDIV0 (0xf0)
58
59
60 #define CX24117_REG_FREQ3_1 (0x55) /* frequency */
61 #define CX24117_REG_FREQ2_1 (0x56)
62 #define CX24117_REG_FREQ1_1 (0x57)
63 #define CX24117_REG_STATE1 (0x5a)
64 #define CX24117_REG_SSTATUS1 (0x5b) /* demod1 signal high / status */
65 #define CX24117_REG_SIGNAL1 (0x5c)
66 #define CX24117_REG_FREQ5_1 (0x5d) /* +- freq */
67 #define CX24117_REG_FREQ4_1 (0x5e)
68 #define CX24117_REG_SRATE2_1 (0x5f)
69 #define CX24117_REG_SRATE1_1 (0x60)
70 #define CX24117_REG_QUALITY2_1 (0x61)
71 #define CX24117_REG_QUALITY1_1 (0x62)
72 #define CX24117_REG_BER4_1 (0x68)
73 #define CX24117_REG_BER3_1 (0x69)
74 #define CX24117_REG_BER2_1 (0x6a)
75 #define CX24117_REG_BER1_1 (0x6b)
76 #define CX24117_REG_DVBS_UCB2_1 (0x6c)
77 #define CX24117_REG_DVBS_UCB1_1 (0x6d)
78 #define CX24117_REG_DVBS2_UCB2_1 (0x71)
79 #define CX24117_REG_DVBS2_UCB1_1 (0x72)
80 #define CX24117_REG_QSTATUS1 (0x9f)
81 #define CX24117_REG_CLKDIV1 (0xe7)
82 #define CX24117_REG_RATEDIV1 (0xf1)
83
84
85 /* arg buffer size */
86 #define CX24117_ARGLEN (0x1e)
87
88 /* rolloff */
89 #define CX24117_ROLLOFF_020 (0x00)
90 #define CX24117_ROLLOFF_025 (0x01)
91 #define CX24117_ROLLOFF_035 (0x02)
92
93 /* pilot bit */
94 #define CX24117_PILOT_OFF (0x00)
95 #define CX24117_PILOT_ON (0x40)
96 #define CX24117_PILOT_AUTO (0x80)
97
98 /* signal status */
99 #define CX24117_HAS_SIGNAL (0x01)
100 #define CX24117_HAS_CARRIER (0x02)
101 #define CX24117_HAS_VITERBI (0x04)
102 #define CX24117_HAS_SYNCLOCK (0x08)
103 #define CX24117_STATUS_MASK (0x0f)
104 #define CX24117_SIGNAL_MASK (0xc0)
105
106
107 /* arg offset for DiSEqC */
108 #define CX24117_DISEQC_DEMOD (1)
109 #define CX24117_DISEQC_BURST (2)
110 #define CX24117_DISEQC_ARG3_2 (3) /* unknown value=2 */
111 #define CX24117_DISEQC_ARG4_0 (4) /* unknown value=0 */
112 #define CX24117_DISEQC_ARG5_0 (5) /* unknown value=0 */
113 #define CX24117_DISEQC_MSGLEN (6)
114 #define CX24117_DISEQC_MSGOFS (7)
115
116 /* DiSEqC burst */
117 #define CX24117_DISEQC_MINI_A (0)
118 #define CX24117_DISEQC_MINI_B (1)
119
120
121 #define CX24117_PNE (0) /* 0 disabled / 2 enabled */
122 #define CX24117_OCC (1) /* 0 disabled / 1 enabled */
123
124
125 enum cmds {
126 CMD_SET_VCOFREQ = 0x10,
127 CMD_TUNEREQUEST = 0x11,
128 CMD_GLOBAL_MPEGCFG = 0x13,
129 CMD_MPEGCFG = 0x14,
130 CMD_TUNERINIT = 0x15,
131 CMD_GET_SRATE = 0x18,
132 CMD_SET_GOLDCODE = 0x19,
133 CMD_GET_AGCACC = 0x1a,
134 CMD_DEMODINIT = 0x1b,
135 CMD_GETCTLACC = 0x1c,
136
137 CMD_LNBCONFIG = 0x20,
138 CMD_LNBSEND = 0x21,
139 CMD_LNBDCLEVEL = 0x22,
140 CMD_LNBPCBCONFIG = 0x23,
141 CMD_LNBSENDTONEBST = 0x24,
142 CMD_LNBUPDREPLY = 0x25,
143
144 CMD_SET_GPIOMODE = 0x30,
145 CMD_SET_GPIOEN = 0x31,
146 CMD_SET_GPIODIR = 0x32,
147 CMD_SET_GPIOOUT = 0x33,
148 CMD_ENABLERSCORR = 0x34,
149 CMD_FWVERSION = 0x35,
150 CMD_SET_SLEEPMODE = 0x36,
151 CMD_BERCTRL = 0x3c,
152 CMD_EVENTCTRL = 0x3d,
153 };
154
155 static LIST_HEAD(hybrid_tuner_instance_list);
156 static DEFINE_MUTEX(cx24117_list_mutex);
157
158 /* The Demod/Tuner can't easily provide these, we cache them */
159 struct cx24117_tuning {
160 u32 frequency;
161 u32 symbol_rate;
162 enum fe_spectral_inversion inversion;
163 enum fe_code_rate fec;
164
165 enum fe_delivery_system delsys;
166 enum fe_modulation modulation;
167 enum fe_pilot pilot;
168 enum fe_rolloff rolloff;
169
170 /* Demod values */
171 u8 fec_val;
172 u8 fec_mask;
173 u8 inversion_val;
174 u8 pilot_val;
175 u8 rolloff_val;
176 };
177
178 /* Basic commands that are sent to the firmware */
179 struct cx24117_cmd {
180 u8 len;
181 u8 args[CX24117_ARGLEN];
182 };
183
184 /* common to both fe's */
185 struct cx24117_priv {
186 u8 demod_address;
187 struct i2c_adapter *i2c;
188 u8 skip_fw_load;
189 struct mutex fe_lock;
190
191 /* Used for sharing this struct between demods */
192 struct tuner_i2c_props i2c_props;
193 struct list_head hybrid_tuner_instance_list;
194 };
195
196 /* one per each fe */
197 struct cx24117_state {
198 struct cx24117_priv *priv;
199 struct dvb_frontend frontend;
200
201 struct cx24117_tuning dcur;
202 struct cx24117_tuning dnxt;
203 struct cx24117_cmd dsec_cmd;
204
205 int demod;
206 };
207
208 /* modfec (modulation and FEC) lookup table */
209 /* Check cx24116.c for a detailed description of each field */
210 static struct cx24117_modfec {
211 enum fe_delivery_system delivery_system;
212 enum fe_modulation modulation;
213 enum fe_code_rate fec;
214 u8 mask; /* In DVBS mode this is used to autodetect */
215 u8 val; /* Passed to the firmware to indicate mode selection */
216 } cx24117_modfec_modes[] = {
217 /* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
218
219 /*mod fec mask val */
220 { SYS_DVBS, QPSK, FEC_NONE, 0xfe, 0x30 },
221 { SYS_DVBS, QPSK, FEC_1_2, 0x02, 0x2e }, /* 00000010 00101110 */
222 { SYS_DVBS, QPSK, FEC_2_3, 0x04, 0x2f }, /* 00000100 00101111 */
223 { SYS_DVBS, QPSK, FEC_3_4, 0x08, 0x30 }, /* 00001000 00110000 */
224 { SYS_DVBS, QPSK, FEC_4_5, 0xfe, 0x30 }, /* 000?0000 ? */
225 { SYS_DVBS, QPSK, FEC_5_6, 0x20, 0x31 }, /* 00100000 00110001 */
226 { SYS_DVBS, QPSK, FEC_6_7, 0xfe, 0x30 }, /* 0?000000 ? */
227 { SYS_DVBS, QPSK, FEC_7_8, 0x80, 0x32 }, /* 10000000 00110010 */
228 { SYS_DVBS, QPSK, FEC_8_9, 0xfe, 0x30 }, /* 0000000? ? */
229 { SYS_DVBS, QPSK, FEC_AUTO, 0xfe, 0x30 },
230 /* NBC-QPSK */
231 { SYS_DVBS2, QPSK, FEC_NONE, 0x00, 0x00 },
232 { SYS_DVBS2, QPSK, FEC_1_2, 0x00, 0x04 },
233 { SYS_DVBS2, QPSK, FEC_3_5, 0x00, 0x05 },
234 { SYS_DVBS2, QPSK, FEC_2_3, 0x00, 0x06 },
235 { SYS_DVBS2, QPSK, FEC_3_4, 0x00, 0x07 },
236 { SYS_DVBS2, QPSK, FEC_4_5, 0x00, 0x08 },
237 { SYS_DVBS2, QPSK, FEC_5_6, 0x00, 0x09 },
238 { SYS_DVBS2, QPSK, FEC_8_9, 0x00, 0x0a },
239 { SYS_DVBS2, QPSK, FEC_9_10, 0x00, 0x0b },
240 { SYS_DVBS2, QPSK, FEC_AUTO, 0x00, 0x00 },
241 /* 8PSK */
242 { SYS_DVBS2, PSK_8, FEC_NONE, 0x00, 0x00 },
243 { SYS_DVBS2, PSK_8, FEC_3_5, 0x00, 0x0c },
244 { SYS_DVBS2, PSK_8, FEC_2_3, 0x00, 0x0d },
245 { SYS_DVBS2, PSK_8, FEC_3_4, 0x00, 0x0e },
246 { SYS_DVBS2, PSK_8, FEC_5_6, 0x00, 0x0f },
247 { SYS_DVBS2, PSK_8, FEC_8_9, 0x00, 0x10 },
248 { SYS_DVBS2, PSK_8, FEC_9_10, 0x00, 0x11 },
249 { SYS_DVBS2, PSK_8, FEC_AUTO, 0x00, 0x00 },
250 /*
251 * 'val' can be found in the FECSTATUS register when tuning.
252 * FECSTATUS will give the actual FEC in use if tuning was successful.
253 */
254 };
255
256
257 static int cx24117_writereg(struct cx24117_state *state, u8 reg, u8 data)
258 {
259 u8 buf[] = { reg, data };
260 struct i2c_msg msg = { .addr = state->priv->demod_address,
261 .flags = 0, .buf = buf, .len = 2 };
262 int ret;
263
264 dev_dbg(&state->priv->i2c->dev,
265 "%s() demod%d i2c wr @0x%02x=0x%02x\n",
266 __func__, state->demod, reg, data);
267
268 ret = i2c_transfer(state->priv->i2c, &msg, 1);
269 if (ret < 0) {
270 dev_warn(&state->priv->i2c->dev,
271 "%s: demod%d i2c wr err(%i) @0x%02x=0x%02x\n",
272 KBUILD_MODNAME, state->demod, ret, reg, data);
273 return ret;
274 }
275 return 0;
276 }
277
278 static int cx24117_writecmd(struct cx24117_state *state,
279 struct cx24117_cmd *cmd)
280 {
281 struct i2c_msg msg;
282 u8 buf[CX24117_ARGLEN+1];
283 int ret;
284
285 dev_dbg(&state->priv->i2c->dev,
286 "%s() demod%d i2c wr cmd len=%d\n",
287 __func__, state->demod, cmd->len);
288
289 buf[0] = CX24117_REG_COMMAND;
290 memcpy(&buf[1], cmd->args, cmd->len);
291
292 msg.addr = state->priv->demod_address;
293 msg.flags = 0;
294 msg.len = cmd->len+1;
295 msg.buf = buf;
296 ret = i2c_transfer(state->priv->i2c, &msg, 1);
297 if (ret < 0) {
298 dev_warn(&state->priv->i2c->dev,
299 "%s: demod%d i2c wr cmd err(%i) len=%d\n",
300 KBUILD_MODNAME, state->demod, ret, cmd->len);
301 return ret;
302 }
303 return 0;
304 }
305
306 static int cx24117_readreg(struct cx24117_state *state, u8 reg)
307 {
308 int ret;
309 u8 recv = 0;
310 struct i2c_msg msg[] = {
311 { .addr = state->priv->demod_address, .flags = 0,
312 .buf = &reg, .len = 1 },
313 { .addr = state->priv->demod_address, .flags = I2C_M_RD,
314 .buf = &recv, .len = 1 }
315 };
316
317 ret = i2c_transfer(state->priv->i2c, msg, 2);
318 if (ret < 0) {
319 dev_warn(&state->priv->i2c->dev,
320 "%s: demod%d i2c rd err(%d) @0x%x\n",
321 KBUILD_MODNAME, state->demod, ret, reg);
322 return ret;
323 }
324
325 dev_dbg(&state->priv->i2c->dev, "%s() demod%d i2c rd @0x%02x=0x%02x\n",
326 __func__, state->demod, reg, recv);
327
328 return recv;
329 }
330
331 static int cx24117_readregN(struct cx24117_state *state,
332 u8 reg, u8 *buf, int len)
333 {
334 int ret;
335 struct i2c_msg msg[] = {
336 { .addr = state->priv->demod_address, .flags = 0,
337 .buf = &reg, .len = 1 },
338 { .addr = state->priv->demod_address, .flags = I2C_M_RD,
339 .buf = buf, .len = len }
340 };
341
342 ret = i2c_transfer(state->priv->i2c, msg, 2);
343 if (ret < 0) {
344 dev_warn(&state->priv->i2c->dev,
345 "%s: demod%d i2c rd err(%d) @0x%x\n",
346 KBUILD_MODNAME, state->demod, ret, reg);
347 return ret;
348 }
349 return 0;
350 }
351
352 static int cx24117_set_inversion(struct cx24117_state *state,
353 enum fe_spectral_inversion inversion)
354 {
355 dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
356 __func__, inversion, state->demod);
357
358 switch (inversion) {
359 case INVERSION_OFF:
360 state->dnxt.inversion_val = 0x00;
361 break;
362 case INVERSION_ON:
363 state->dnxt.inversion_val = 0x04;
364 break;
365 case INVERSION_AUTO:
366 state->dnxt.inversion_val = 0x0C;
367 break;
368 default:
369 return -EINVAL;
370 }
371
372 state->dnxt.inversion = inversion;
373
374 return 0;
375 }
376
377 static int cx24117_lookup_fecmod(struct cx24117_state *state,
378 enum fe_delivery_system d, enum fe_modulation m, enum fe_code_rate f)
379 {
380 int i, ret = -EINVAL;
381
382 dev_dbg(&state->priv->i2c->dev,
383 "%s(demod(0x%02x,0x%02x) demod%d\n",
384 __func__, m, f, state->demod);
385
386 for (i = 0; i < ARRAY_SIZE(cx24117_modfec_modes); i++) {
387 if ((d == cx24117_modfec_modes[i].delivery_system) &&
388 (m == cx24117_modfec_modes[i].modulation) &&
389 (f == cx24117_modfec_modes[i].fec)) {
390 ret = i;
391 break;
392 }
393 }
394
395 return ret;
396 }
397
398 static int cx24117_set_fec(struct cx24117_state *state,
399 enum fe_delivery_system delsys,
400 enum fe_modulation mod,
401 enum fe_code_rate fec)
402 {
403 int ret;
404
405 dev_dbg(&state->priv->i2c->dev,
406 "%s(0x%02x,0x%02x) demod%d\n",
407 __func__, mod, fec, state->demod);
408
409 ret = cx24117_lookup_fecmod(state, delsys, mod, fec);
410 if (ret < 0)
411 return ret;
412
413 state->dnxt.fec = fec;
414 state->dnxt.fec_val = cx24117_modfec_modes[ret].val;
415 state->dnxt.fec_mask = cx24117_modfec_modes[ret].mask;
416 dev_dbg(&state->priv->i2c->dev,
417 "%s() demod%d mask/val = 0x%02x/0x%02x\n", __func__,
418 state->demod, state->dnxt.fec_mask, state->dnxt.fec_val);
419
420 return 0;
421 }
422
423 static int cx24117_set_symbolrate(struct cx24117_state *state, u32 rate)
424 {
425 dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
426 __func__, rate, state->demod);
427
428 state->dnxt.symbol_rate = rate;
429
430 dev_dbg(&state->priv->i2c->dev,
431 "%s() demod%d symbol_rate = %d\n",
432 __func__, state->demod, rate);
433
434 return 0;
435 }
436
437 static int cx24117_load_firmware(struct dvb_frontend *fe,
438 const struct firmware *fw);
439
440 static int cx24117_firmware_ondemand(struct dvb_frontend *fe)
441 {
442 struct cx24117_state *state = fe->demodulator_priv;
443 const struct firmware *fw;
444 int ret = 0;
445
446 dev_dbg(&state->priv->i2c->dev, "%s() demod%d skip_fw_load=%d\n",
447 __func__, state->demod, state->priv->skip_fw_load);
448
449 if (state->priv->skip_fw_load)
450 return 0;
451
452 /* check if firmware is already running */
453 if (cx24117_readreg(state, 0xeb) != 0xa) {
454 /* Load firmware */
455 /* request the firmware, this will block until loaded */
456 dev_dbg(&state->priv->i2c->dev,
457 "%s: Waiting for firmware upload (%s)...\n",
458 __func__, CX24117_DEFAULT_FIRMWARE);
459 ret = request_firmware(&fw, CX24117_DEFAULT_FIRMWARE,
460 state->priv->i2c->dev.parent);
461 dev_dbg(&state->priv->i2c->dev,
462 "%s: Waiting for firmware upload(2)...\n", __func__);
463 if (ret) {
464 dev_err(&state->priv->i2c->dev,
465 "%s: No firmware uploaded (timeout or file not found?)\n",
466 __func__);
467 return ret;
468 }
469
470 /* Make sure we don't recurse back through here
471 * during loading */
472 state->priv->skip_fw_load = 1;
473
474 ret = cx24117_load_firmware(fe, fw);
475 if (ret)
476 dev_err(&state->priv->i2c->dev,
477 "%s: Writing firmware failed\n", __func__);
478 release_firmware(fw);
479
480 dev_info(&state->priv->i2c->dev,
481 "%s: Firmware upload %s\n", __func__,
482 ret == 0 ? "complete" : "failed");
483
484 /* Ensure firmware is always loaded if required */
485 state->priv->skip_fw_load = 0;
486 }
487
488 return ret;
489 }
490
491 /* Take a basic firmware command structure, format it
492 * and forward it for processing
493 */
494 static int cx24117_cmd_execute_nolock(struct dvb_frontend *fe,
495 struct cx24117_cmd *cmd)
496 {
497 struct cx24117_state *state = fe->demodulator_priv;
498 int i, ret;
499
500 dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
501 __func__, state->demod);
502
503 /* Load the firmware if required */
504 ret = cx24117_firmware_ondemand(fe);
505 if (ret != 0)
506 return ret;
507
508 /* Write the command */
509 cx24117_writecmd(state, cmd);
510
511 /* Start execution and wait for cmd to terminate */
512 cx24117_writereg(state, CX24117_REG_EXECUTE, 0x01);
513 i = 0;
514 while (cx24117_readreg(state, CX24117_REG_EXECUTE)) {
515 msleep(20);
516 if (i++ > 40) {
517 /* Avoid looping forever if the firmware does
518 not respond */
519 dev_warn(&state->priv->i2c->dev,
520 "%s() Firmware not responding\n", __func__);
521 return -EIO;
522 }
523 }
524 return 0;
525 }
526
527 static int cx24117_cmd_execute(struct dvb_frontend *fe, struct cx24117_cmd *cmd)
528 {
529 struct cx24117_state *state = fe->demodulator_priv;
530 int ret;
531
532 mutex_lock(&state->priv->fe_lock);
533 ret = cx24117_cmd_execute_nolock(fe, cmd);
534 mutex_unlock(&state->priv->fe_lock);
535
536 return ret;
537 }
538
539 static int cx24117_load_firmware(struct dvb_frontend *fe,
540 const struct firmware *fw)
541 {
542 struct cx24117_state *state = fe->demodulator_priv;
543 struct cx24117_cmd cmd;
544 int i, ret;
545 unsigned char vers[4];
546
547 struct i2c_msg msg;
548 u8 *buf;
549
550 dev_dbg(&state->priv->i2c->dev,
551 "%s() demod%d FW is %zu bytes (%02x %02x .. %02x %02x)\n",
552 __func__, state->demod, fw->size, fw->data[0], fw->data[1],
553 fw->data[fw->size - 2], fw->data[fw->size - 1]);
554
555 cx24117_writereg(state, 0xea, 0x00);
556 cx24117_writereg(state, 0xea, 0x01);
557 cx24117_writereg(state, 0xea, 0x00);
558
559 cx24117_writereg(state, 0xce, 0x92);
560
561 cx24117_writereg(state, 0xfb, 0x00);
562 cx24117_writereg(state, 0xfc, 0x00);
563
564 cx24117_writereg(state, 0xc3, 0x04);
565 cx24117_writereg(state, 0xc4, 0x04);
566
567 cx24117_writereg(state, 0xce, 0x00);
568 cx24117_writereg(state, 0xcf, 0x00);
569
570 cx24117_writereg(state, 0xea, 0x00);
571 cx24117_writereg(state, 0xeb, 0x0c);
572 cx24117_writereg(state, 0xec, 0x06);
573 cx24117_writereg(state, 0xed, 0x05);
574 cx24117_writereg(state, 0xee, 0x03);
575 cx24117_writereg(state, 0xef, 0x05);
576
577 cx24117_writereg(state, 0xf3, 0x03);
578 cx24117_writereg(state, 0xf4, 0x44);
579
580 cx24117_writereg(state, CX24117_REG_RATEDIV0, 0x04);
581 cx24117_writereg(state, CX24117_REG_CLKDIV0, 0x02);
582
583 cx24117_writereg(state, CX24117_REG_RATEDIV1, 0x04);
584 cx24117_writereg(state, CX24117_REG_CLKDIV1, 0x02);
585
586 cx24117_writereg(state, 0xf2, 0x04);
587 cx24117_writereg(state, 0xe8, 0x02);
588 cx24117_writereg(state, 0xea, 0x01);
589 cx24117_writereg(state, 0xc8, 0x00);
590 cx24117_writereg(state, 0xc9, 0x00);
591 cx24117_writereg(state, 0xca, 0x00);
592 cx24117_writereg(state, 0xcb, 0x00);
593 cx24117_writereg(state, 0xcc, 0x00);
594 cx24117_writereg(state, 0xcd, 0x00);
595 cx24117_writereg(state, 0xe4, 0x03);
596 cx24117_writereg(state, 0xeb, 0x0a);
597
598 cx24117_writereg(state, 0xfb, 0x00);
599 cx24117_writereg(state, 0xe0, 0x76);
600 cx24117_writereg(state, 0xf7, 0x81);
601 cx24117_writereg(state, 0xf8, 0x00);
602 cx24117_writereg(state, 0xf9, 0x00);
603
604 buf = kmalloc(fw->size + 1, GFP_KERNEL);
605 if (buf == NULL) {
606 state->priv->skip_fw_load = 0;
607 return -ENOMEM;
608 }
609
610 /* fw upload reg */
611 buf[0] = 0xfa;
612 memcpy(&buf[1], fw->data, fw->size);
613
614 /* prepare i2c message to send */
615 msg.addr = state->priv->demod_address;
616 msg.flags = 0;
617 msg.len = fw->size + 1;
618 msg.buf = buf;
619
620 /* send fw */
621 ret = i2c_transfer(state->priv->i2c, &msg, 1);
622 if (ret < 0) {
623 kfree(buf);
624 return ret;
625 }
626
627 kfree(buf);
628
629 cx24117_writereg(state, 0xf7, 0x0c);
630 cx24117_writereg(state, 0xe0, 0x00);
631
632 /* Init demodulator */
633 cmd.args[0] = CMD_DEMODINIT;
634 cmd.args[1] = 0x00;
635 cmd.args[2] = 0x01;
636 cmd.args[3] = 0x00;
637 cmd.len = 4;
638 ret = cx24117_cmd_execute_nolock(fe, &cmd);
639 if (ret != 0)
640 goto error;
641
642 /* Set VCO frequency */
643 cmd.args[0] = CMD_SET_VCOFREQ;
644 cmd.args[1] = 0x06;
645 cmd.args[2] = 0x2b;
646 cmd.args[3] = 0xd8;
647 cmd.args[4] = 0xa5;
648 cmd.args[5] = 0xee;
649 cmd.args[6] = 0x03;
650 cmd.args[7] = 0x9d;
651 cmd.args[8] = 0xfc;
652 cmd.args[9] = 0x06;
653 cmd.args[10] = 0x02;
654 cmd.args[11] = 0x9d;
655 cmd.args[12] = 0xfc;
656 cmd.len = 13;
657 ret = cx24117_cmd_execute_nolock(fe, &cmd);
658 if (ret != 0)
659 goto error;
660
661 /* Tuner init */
662 cmd.args[0] = CMD_TUNERINIT;
663 cmd.args[1] = 0x00;
664 cmd.args[2] = 0x01;
665 cmd.args[3] = 0x00;
666 cmd.args[4] = 0x00;
667 cmd.args[5] = 0x01;
668 cmd.args[6] = 0x01;
669 cmd.args[7] = 0x01;
670 cmd.args[8] = 0x00;
671 cmd.args[9] = 0x05;
672 cmd.args[10] = 0x02;
673 cmd.args[11] = 0x02;
674 cmd.args[12] = 0x00;
675 cmd.len = 13;
676 ret = cx24117_cmd_execute_nolock(fe, &cmd);
677 if (ret != 0)
678 goto error;
679
680 /* Global MPEG config */
681 cmd.args[0] = CMD_GLOBAL_MPEGCFG;
682 cmd.args[1] = 0x00;
683 cmd.args[2] = 0x00;
684 cmd.args[3] = 0x00;
685 cmd.args[4] = 0x01;
686 cmd.args[5] = 0x00;
687 cmd.len = 6;
688 ret = cx24117_cmd_execute_nolock(fe, &cmd);
689 if (ret != 0)
690 goto error;
691
692 /* MPEG config for each demod */
693 for (i = 0; i < 2; i++) {
694 cmd.args[0] = CMD_MPEGCFG;
695 cmd.args[1] = (u8) i;
696 cmd.args[2] = 0x00;
697 cmd.args[3] = 0x05;
698 cmd.args[4] = 0x00;
699 cmd.args[5] = 0x00;
700 cmd.args[6] = 0x55;
701 cmd.args[7] = 0x00;
702 cmd.len = 8;
703 ret = cx24117_cmd_execute_nolock(fe, &cmd);
704 if (ret != 0)
705 goto error;
706 }
707
708 cx24117_writereg(state, 0xce, 0xc0);
709 cx24117_writereg(state, 0xcf, 0x00);
710 cx24117_writereg(state, 0xe5, 0x04);
711
712 /* Get firmware version */
713 cmd.args[0] = CMD_FWVERSION;
714 cmd.len = 2;
715 for (i = 0; i < 4; i++) {
716 cmd.args[1] = i;
717 ret = cx24117_cmd_execute_nolock(fe, &cmd);
718 if (ret != 0)
719 goto error;
720 vers[i] = cx24117_readreg(state, 0x33);
721 }
722 dev_info(&state->priv->i2c->dev,
723 "%s: FW version %i.%i.%i.%i\n", __func__,
724 vers[0], vers[1], vers[2], vers[3]);
725 return 0;
726 error:
727 state->priv->skip_fw_load = 0;
728 dev_err(&state->priv->i2c->dev, "%s() Error running FW.\n", __func__);
729 return ret;
730 }
731
732 static int cx24117_read_status(struct dvb_frontend *fe, enum fe_status *status)
733 {
734 struct cx24117_state *state = fe->demodulator_priv;
735 int lock;
736
737 lock = cx24117_readreg(state,
738 (state->demod == 0) ? CX24117_REG_SSTATUS0 :
739 CX24117_REG_SSTATUS1) &
740 CX24117_STATUS_MASK;
741
742 dev_dbg(&state->priv->i2c->dev, "%s() demod%d status = 0x%02x\n",
743 __func__, state->demod, lock);
744
745 *status = 0;
746
747 if (lock & CX24117_HAS_SIGNAL)
748 *status |= FE_HAS_SIGNAL;
749 if (lock & CX24117_HAS_CARRIER)
750 *status |= FE_HAS_CARRIER;
751 if (lock & CX24117_HAS_VITERBI)
752 *status |= FE_HAS_VITERBI;
753 if (lock & CX24117_HAS_SYNCLOCK)
754 *status |= FE_HAS_SYNC | FE_HAS_LOCK;
755
756 return 0;
757 }
758
759 static int cx24117_read_ber(struct dvb_frontend *fe, u32 *ber)
760 {
761 struct cx24117_state *state = fe->demodulator_priv;
762 int ret;
763 u8 buf[4];
764 u8 base_reg = (state->demod == 0) ?
765 CX24117_REG_BER4_0 :
766 CX24117_REG_BER4_1;
767
768 ret = cx24117_readregN(state, base_reg, buf, 4);
769 if (ret != 0)
770 return ret;
771
772 *ber = (buf[0] << 24) | (buf[1] << 16) |
773 (buf[1] << 8) | buf[0];
774
775 dev_dbg(&state->priv->i2c->dev, "%s() demod%d ber=0x%04x\n",
776 __func__, state->demod, *ber);
777
778 return 0;
779 }
780
781 static int cx24117_read_signal_strength(struct dvb_frontend *fe,
782 u16 *signal_strength)
783 {
784 struct cx24117_state *state = fe->demodulator_priv;
785 struct cx24117_cmd cmd;
786 int ret;
787 u16 sig_reading;
788 u8 buf[2];
789 u8 reg = (state->demod == 0) ?
790 CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1;
791
792 /* Read AGC accumulator register */
793 cmd.args[0] = CMD_GET_AGCACC;
794 cmd.args[1] = (u8) state->demod;
795 cmd.len = 2;
796 ret = cx24117_cmd_execute(fe, &cmd);
797 if (ret != 0)
798 return ret;
799
800 ret = cx24117_readregN(state, reg, buf, 2);
801 if (ret != 0)
802 return ret;
803 sig_reading = ((buf[0] & CX24117_SIGNAL_MASK) << 2) | buf[1];
804
805 *signal_strength = -100 * sig_reading + 94324;
806
807 dev_dbg(&state->priv->i2c->dev,
808 "%s() demod%d raw / cooked = 0x%04x / 0x%04x\n",
809 __func__, state->demod, sig_reading, *signal_strength);
810
811 return 0;
812 }
813
814 static int cx24117_read_snr(struct dvb_frontend *fe, u16 *snr)
815 {
816 struct cx24117_state *state = fe->demodulator_priv;
817 int ret;
818 u8 buf[2];
819 u8 reg = (state->demod == 0) ?
820 CX24117_REG_QUALITY2_0 : CX24117_REG_QUALITY2_1;
821
822 ret = cx24117_readregN(state, reg, buf, 2);
823 if (ret != 0)
824 return ret;
825
826 *snr = (buf[0] << 8) | buf[1];
827
828 dev_dbg(&state->priv->i2c->dev,
829 "%s() demod%d snr = 0x%04x\n",
830 __func__, state->demod, *snr);
831
832 return ret;
833 }
834
835 static int cx24117_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
836 {
837 struct cx24117_state *state = fe->demodulator_priv;
838 enum fe_delivery_system delsys = fe->dtv_property_cache.delivery_system;
839 int ret;
840 u8 buf[2];
841 u8 reg = (state->demod == 0) ?
842 CX24117_REG_DVBS_UCB2_0 :
843 CX24117_REG_DVBS_UCB2_1;
844
845 switch (delsys) {
846 case SYS_DVBS:
847 break;
848 case SYS_DVBS2:
849 reg += (CX24117_REG_DVBS2_UCB2_0 - CX24117_REG_DVBS_UCB2_0);
850 break;
851 default:
852 return -EINVAL;
853 }
854
855 ret = cx24117_readregN(state, reg, buf, 2);
856 if (ret != 0)
857 return ret;
858 *ucblocks = (buf[0] << 8) | buf[1];
859
860 dev_dbg(&state->priv->i2c->dev, "%s() demod%d ucb=0x%04x\n",
861 __func__, state->demod, *ucblocks);
862
863 return 0;
864 }
865
866 /* Overwrite the current tuning params, we are about to tune */
867 static void cx24117_clone_params(struct dvb_frontend *fe)
868 {
869 struct cx24117_state *state = fe->demodulator_priv;
870 state->dcur = state->dnxt;
871 }
872
873 /* Wait for LNB */
874 static int cx24117_wait_for_lnb(struct dvb_frontend *fe)
875 {
876 struct cx24117_state *state = fe->demodulator_priv;
877 int i;
878 u8 val, reg = (state->demod == 0) ? CX24117_REG_QSTATUS0 :
879 CX24117_REG_QSTATUS1;
880
881 dev_dbg(&state->priv->i2c->dev, "%s() demod%d qstatus = 0x%02x\n",
882 __func__, state->demod, cx24117_readreg(state, reg));
883
884 /* Wait for up to 300 ms */
885 for (i = 0; i < 10; i++) {
886 val = cx24117_readreg(state, reg) & 0x01;
887 if (val != 0)
888 return 0;
889 msleep(30);
890 }
891
892 dev_warn(&state->priv->i2c->dev, "%s: demod%d LNB not ready\n",
893 KBUILD_MODNAME, state->demod);
894
895 return -ETIMEDOUT; /* -EBUSY ? */
896 }
897
898 static int cx24117_set_voltage(struct dvb_frontend *fe,
899 enum fe_sec_voltage voltage)
900 {
901 struct cx24117_state *state = fe->demodulator_priv;
902 struct cx24117_cmd cmd;
903 int ret;
904 u8 reg = (state->demod == 0) ? 0x10 : 0x20;
905
906 dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
907 __func__, state->demod,
908 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
909 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
910 "SEC_VOLTAGE_OFF");
911
912 /* Prepare a set GPIO logic level CMD */
913 cmd.args[0] = CMD_SET_GPIOOUT;
914 cmd.args[2] = reg; /* mask */
915 cmd.len = 3;
916
917 if ((voltage == SEC_VOLTAGE_13) ||
918 (voltage == SEC_VOLTAGE_18)) {
919 /* power on LNB */
920 cmd.args[1] = reg;
921 ret = cx24117_cmd_execute(fe, &cmd);
922 if (ret != 0)
923 return ret;
924
925 ret = cx24117_wait_for_lnb(fe);
926 if (ret != 0)
927 return ret;
928
929 /* Wait for voltage/min repeat delay */
930 msleep(100);
931
932 /* Set 13V/18V select pin */
933 cmd.args[0] = CMD_LNBDCLEVEL;
934 cmd.args[1] = state->demod ? 0 : 1;
935 cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
936 cmd.len = 3;
937 ret = cx24117_cmd_execute(fe, &cmd);
938
939 /* Min delay time before DiSEqC send */
940 msleep(20);
941 } else {
942 /* power off LNB */
943 cmd.args[1] = 0x00;
944 ret = cx24117_cmd_execute(fe, &cmd);
945 }
946
947 return ret;
948 }
949
950 static int cx24117_set_tone(struct dvb_frontend *fe,
951 enum fe_sec_tone_mode tone)
952 {
953 struct cx24117_state *state = fe->demodulator_priv;
954 struct cx24117_cmd cmd;
955 int ret;
956
957 dev_dbg(&state->priv->i2c->dev, "%s(%d) demod%d\n",
958 __func__, state->demod, tone);
959 if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
960 dev_warn(&state->priv->i2c->dev, "%s: demod%d invalid tone=%d\n",
961 KBUILD_MODNAME, state->demod, tone);
962 return -EINVAL;
963 }
964
965 /* Wait for LNB ready */
966 ret = cx24117_wait_for_lnb(fe);
967 if (ret != 0)
968 return ret;
969
970 /* Min delay time after DiSEqC send */
971 msleep(20);
972
973 /* Set the tone */
974 cmd.args[0] = CMD_LNBPCBCONFIG;
975 cmd.args[1] = (state->demod ? 0 : 1);
976 cmd.args[2] = 0x00;
977 cmd.args[3] = 0x00;
978 cmd.len = 5;
979 switch (tone) {
980 case SEC_TONE_ON:
981 cmd.args[4] = 0x01;
982 break;
983 case SEC_TONE_OFF:
984 cmd.args[4] = 0x00;
985 break;
986 }
987
988 msleep(20);
989
990 return cx24117_cmd_execute(fe, &cmd);
991 }
992
993 /* Initialise DiSEqC */
994 static int cx24117_diseqc_init(struct dvb_frontend *fe)
995 {
996 struct cx24117_state *state = fe->demodulator_priv;
997
998 /* Prepare a DiSEqC command */
999 state->dsec_cmd.args[0] = CMD_LNBSEND;
1000
1001 /* demod */
1002 state->dsec_cmd.args[CX24117_DISEQC_DEMOD] = state->demod ? 0 : 1;
1003
1004 /* DiSEqC burst */
1005 state->dsec_cmd.args[CX24117_DISEQC_BURST] = CX24117_DISEQC_MINI_A;
1006
1007 /* Unknown */
1008 state->dsec_cmd.args[CX24117_DISEQC_ARG3_2] = 0x02;
1009 state->dsec_cmd.args[CX24117_DISEQC_ARG4_0] = 0x00;
1010
1011 /* Continuation flag? */
1012 state->dsec_cmd.args[CX24117_DISEQC_ARG5_0] = 0x00;
1013
1014 /* DiSEqC message length */
1015 state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = 0x00;
1016
1017 /* Command length */
1018 state->dsec_cmd.len = 7;
1019
1020 return 0;
1021 }
1022
1023 /* Send DiSEqC message */
1024 static int cx24117_send_diseqc_msg(struct dvb_frontend *fe,
1025 struct dvb_diseqc_master_cmd *d)
1026 {
1027 struct cx24117_state *state = fe->demodulator_priv;
1028 int i, ret;
1029
1030 /* Dump DiSEqC message */
1031 dev_dbg(&state->priv->i2c->dev, "%s: demod %d (",
1032 __func__, state->demod);
1033 for (i = 0; i < d->msg_len; i++)
1034 dev_dbg(&state->priv->i2c->dev, "0x%02x ", d->msg[i]);
1035 dev_dbg(&state->priv->i2c->dev, ")\n");
1036
1037 /* Validate length */
1038 if (d->msg_len > sizeof(d->msg))
1039 return -EINVAL;
1040
1041 /* DiSEqC message */
1042 for (i = 0; i < d->msg_len; i++)
1043 state->dsec_cmd.args[CX24117_DISEQC_MSGOFS + i] = d->msg[i];
1044
1045 /* DiSEqC message length */
1046 state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] = d->msg_len;
1047
1048 /* Command length */
1049 state->dsec_cmd.len = CX24117_DISEQC_MSGOFS +
1050 state->dsec_cmd.args[CX24117_DISEQC_MSGLEN];
1051
1052 /*
1053 * Message is sent with derived else cached burst
1054 *
1055 * WRITE PORT GROUP COMMAND 38
1056 *
1057 * 0/A/A: E0 10 38 F0..F3
1058 * 1/B/B: E0 10 38 F4..F7
1059 * 2/C/A: E0 10 38 F8..FB
1060 * 3/D/B: E0 10 38 FC..FF
1061 *
1062 * databyte[3]= 8421:8421
1063 * ABCD:WXYZ
1064 * CLR :SET
1065 *
1066 * WX= PORT SELECT 0..3 (X=TONEBURST)
1067 * Y = VOLTAGE (0=13V, 1=18V)
1068 * Z = BAND (0=LOW, 1=HIGH(22K))
1069 */
1070 if (d->msg_len >= 4 && d->msg[2] == 0x38)
1071 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1072 ((d->msg[3] & 4) >> 2);
1073
1074 dev_dbg(&state->priv->i2c->dev, "%s() demod%d burst=%d\n",
1075 __func__, state->demod,
1076 state->dsec_cmd.args[CX24117_DISEQC_BURST]);
1077
1078 /* Wait for LNB ready */
1079 ret = cx24117_wait_for_lnb(fe);
1080 if (ret != 0)
1081 return ret;
1082
1083 /* Wait for voltage/min repeat delay */
1084 msleep(100);
1085
1086 /* Command */
1087 ret = cx24117_cmd_execute(fe, &state->dsec_cmd);
1088 if (ret != 0)
1089 return ret;
1090 /*
1091 * Wait for send
1092 *
1093 * Eutelsat spec:
1094 * >15ms delay + (XXX determine if FW does this, see set_tone)
1095 * 13.5ms per byte +
1096 * >15ms delay +
1097 * 12.5ms burst +
1098 * >15ms delay (XXX determine if FW does this, see set_tone)
1099 */
1100 msleep((state->dsec_cmd.args[CX24117_DISEQC_MSGLEN] << 4) + 60);
1101
1102 return 0;
1103 }
1104
1105 /* Send DiSEqC burst */
1106 static int cx24117_diseqc_send_burst(struct dvb_frontend *fe,
1107 enum fe_sec_mini_cmd burst)
1108 {
1109 struct cx24117_state *state = fe->demodulator_priv;
1110
1111 dev_dbg(&state->priv->i2c->dev, "%s(%d) demod=%d\n",
1112 __func__, burst, state->demod);
1113
1114 /* DiSEqC burst */
1115 if (burst == SEC_MINI_A)
1116 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1117 CX24117_DISEQC_MINI_A;
1118 else if (burst == SEC_MINI_B)
1119 state->dsec_cmd.args[CX24117_DISEQC_BURST] =
1120 CX24117_DISEQC_MINI_B;
1121 else
1122 return -EINVAL;
1123
1124 return 0;
1125 }
1126
1127 static int cx24117_get_priv(struct cx24117_priv **priv,
1128 struct i2c_adapter *i2c, u8 client_address)
1129 {
1130 int ret;
1131
1132 mutex_lock(&cx24117_list_mutex);
1133 ret = hybrid_tuner_request_state(struct cx24117_priv, (*priv),
1134 hybrid_tuner_instance_list, i2c, client_address, "cx24117");
1135 mutex_unlock(&cx24117_list_mutex);
1136
1137 return ret;
1138 }
1139
1140 static void cx24117_release_priv(struct cx24117_priv *priv)
1141 {
1142 mutex_lock(&cx24117_list_mutex);
1143 if (priv != NULL)
1144 hybrid_tuner_release_state(priv);
1145 mutex_unlock(&cx24117_list_mutex);
1146 }
1147
1148 static void cx24117_release(struct dvb_frontend *fe)
1149 {
1150 struct cx24117_state *state = fe->demodulator_priv;
1151 dev_dbg(&state->priv->i2c->dev, "%s demod%d\n",
1152 __func__, state->demod);
1153 cx24117_release_priv(state->priv);
1154 kfree(state);
1155 }
1156
1157 static const struct dvb_frontend_ops cx24117_ops;
1158
1159 struct dvb_frontend *cx24117_attach(const struct cx24117_config *config,
1160 struct i2c_adapter *i2c)
1161 {
1162 struct cx24117_state *state = NULL;
1163 struct cx24117_priv *priv = NULL;
1164 int demod = 0;
1165
1166 /* get the common data struct for both demods */
1167 demod = cx24117_get_priv(&priv, i2c, config->demod_address);
1168
1169 switch (demod) {
1170 case 0:
1171 dev_err(&i2c->dev,
1172 "%s: Error attaching frontend %d\n",
1173 KBUILD_MODNAME, demod);
1174 goto error1;
1175 break;
1176 case 1:
1177 /* new priv instance */
1178 priv->i2c = i2c;
1179 priv->demod_address = config->demod_address;
1180 mutex_init(&priv->fe_lock);
1181 break;
1182 default:
1183 /* existing priv instance */
1184 break;
1185 }
1186
1187 /* allocate memory for the internal state */
1188 state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1189 if (state == NULL)
1190 goto error2;
1191
1192 state->demod = demod - 1;
1193 state->priv = priv;
1194
1195 dev_info(&state->priv->i2c->dev,
1196 "%s: Attaching frontend %d\n",
1197 KBUILD_MODNAME, state->demod);
1198
1199 /* create dvb_frontend */
1200 memcpy(&state->frontend.ops, &cx24117_ops,
1201 sizeof(struct dvb_frontend_ops));
1202 state->frontend.demodulator_priv = state;
1203 return &state->frontend;
1204
1205 error2:
1206 cx24117_release_priv(priv);
1207 error1:
1208 return NULL;
1209 }
1210 EXPORT_SYMBOL_GPL(cx24117_attach);
1211
1212 /*
1213 * Initialise or wake up device
1214 *
1215 * Power config will reset and load initial firmware if required
1216 */
1217 static int cx24117_initfe(struct dvb_frontend *fe)
1218 {
1219 struct cx24117_state *state = fe->demodulator_priv;
1220 struct cx24117_cmd cmd;
1221 int ret;
1222
1223 dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1224 __func__, state->demod);
1225
1226 mutex_lock(&state->priv->fe_lock);
1227
1228 /* Set sleep mode off */
1229 cmd.args[0] = CMD_SET_SLEEPMODE;
1230 cmd.args[1] = (state->demod ? 1 : 0);
1231 cmd.args[2] = 0;
1232 cmd.len = 3;
1233 ret = cx24117_cmd_execute_nolock(fe, &cmd);
1234 if (ret != 0)
1235 goto exit;
1236
1237 ret = cx24117_diseqc_init(fe);
1238 if (ret != 0)
1239 goto exit;
1240
1241 /* Set BER control */
1242 cmd.args[0] = CMD_BERCTRL;
1243 cmd.args[1] = (state->demod ? 1 : 0);
1244 cmd.args[2] = 0x10;
1245 cmd.args[3] = 0x10;
1246 cmd.len = 4;
1247 ret = cx24117_cmd_execute_nolock(fe, &cmd);
1248 if (ret != 0)
1249 goto exit;
1250
1251 /* Set RS correction (enable/disable) */
1252 cmd.args[0] = CMD_ENABLERSCORR;
1253 cmd.args[1] = (state->demod ? 1 : 0);
1254 cmd.args[2] = CX24117_OCC;
1255 cmd.len = 3;
1256 ret = cx24117_cmd_execute_nolock(fe, &cmd);
1257 if (ret != 0)
1258 goto exit;
1259
1260 /* Set GPIO direction */
1261 /* Set as output - controls LNB power on/off */
1262 cmd.args[0] = CMD_SET_GPIODIR;
1263 cmd.args[1] = 0x30;
1264 cmd.args[2] = 0x30;
1265 cmd.len = 3;
1266 ret = cx24117_cmd_execute_nolock(fe, &cmd);
1267
1268 exit:
1269 mutex_unlock(&state->priv->fe_lock);
1270
1271 return ret;
1272 }
1273
1274 /*
1275 * Put device to sleep
1276 */
1277 static int cx24117_sleep(struct dvb_frontend *fe)
1278 {
1279 struct cx24117_state *state = fe->demodulator_priv;
1280 struct cx24117_cmd cmd;
1281
1282 dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1283 __func__, state->demod);
1284
1285 /* Set sleep mode on */
1286 cmd.args[0] = CMD_SET_SLEEPMODE;
1287 cmd.args[1] = (state->demod ? 1 : 0);
1288 cmd.args[2] = 1;
1289 cmd.len = 3;
1290 return cx24117_cmd_execute(fe, &cmd);
1291 }
1292
1293 /* dvb-core told us to tune, the tv property cache will be complete,
1294 * it's safe for is to pull values and use them for tuning purposes.
1295 */
1296 static int cx24117_set_frontend(struct dvb_frontend *fe)
1297 {
1298 struct cx24117_state *state = fe->demodulator_priv;
1299 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1300 struct cx24117_cmd cmd;
1301 enum fe_status tunerstat;
1302 int i, status, ret, retune = 1;
1303 u8 reg_clkdiv, reg_ratediv;
1304
1305 dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1306 __func__, state->demod);
1307
1308 switch (c->delivery_system) {
1309 case SYS_DVBS:
1310 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1311 __func__, state->demod);
1312
1313 /* Only QPSK is supported for DVB-S */
1314 if (c->modulation != QPSK) {
1315 dev_dbg(&state->priv->i2c->dev,
1316 "%s() demod%d unsupported modulation (%d)\n",
1317 __func__, state->demod, c->modulation);
1318 return -EINVAL;
1319 }
1320
1321 /* Pilot doesn't exist in DVB-S, turn bit off */
1322 state->dnxt.pilot_val = CX24117_PILOT_OFF;
1323
1324 /* DVB-S only supports 0.35 */
1325 state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1326 break;
1327
1328 case SYS_DVBS2:
1329 dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1330 __func__, state->demod);
1331
1332 /*
1333 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1334 * but not hardware auto detection
1335 */
1336 if (c->modulation != PSK_8 && c->modulation != QPSK) {
1337 dev_dbg(&state->priv->i2c->dev,
1338 "%s() demod%d unsupported modulation (%d)\n",
1339 __func__, state->demod, c->modulation);
1340 return -EOPNOTSUPP;
1341 }
1342
1343 switch (c->pilot) {
1344 case PILOT_AUTO:
1345 state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1346 break;
1347 case PILOT_OFF:
1348 state->dnxt.pilot_val = CX24117_PILOT_OFF;
1349 break;
1350 case PILOT_ON:
1351 state->dnxt.pilot_val = CX24117_PILOT_ON;
1352 break;
1353 default:
1354 dev_dbg(&state->priv->i2c->dev,
1355 "%s() demod%d unsupported pilot mode (%d)\n",
1356 __func__, state->demod, c->pilot);
1357 return -EOPNOTSUPP;
1358 }
1359
1360 switch (c->rolloff) {
1361 case ROLLOFF_20:
1362 state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1363 break;
1364 case ROLLOFF_25:
1365 state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1366 break;
1367 case ROLLOFF_35:
1368 state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1369 break;
1370 case ROLLOFF_AUTO:
1371 state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1372 /* soft-auto rolloff */
1373 retune = 3;
1374 break;
1375 default:
1376 dev_warn(&state->priv->i2c->dev,
1377 "%s: demod%d unsupported rolloff (%d)\n",
1378 KBUILD_MODNAME, state->demod, c->rolloff);
1379 return -EOPNOTSUPP;
1380 }
1381 break;
1382
1383 default:
1384 dev_warn(&state->priv->i2c->dev,
1385 "%s: demod %d unsupported delivery system (%d)\n",
1386 KBUILD_MODNAME, state->demod, c->delivery_system);
1387 return -EINVAL;
1388 }
1389
1390 state->dnxt.delsys = c->delivery_system;
1391 state->dnxt.modulation = c->modulation;
1392 state->dnxt.frequency = c->frequency;
1393 state->dnxt.pilot = c->pilot;
1394 state->dnxt.rolloff = c->rolloff;
1395
1396 ret = cx24117_set_inversion(state, c->inversion);
1397 if (ret != 0)
1398 return ret;
1399
1400 ret = cx24117_set_fec(state,
1401 c->delivery_system, c->modulation, c->fec_inner);
1402 if (ret != 0)
1403 return ret;
1404
1405 ret = cx24117_set_symbolrate(state, c->symbol_rate);
1406 if (ret != 0)
1407 return ret;
1408
1409 /* discard the 'current' tuning parameters and prepare to tune */
1410 cx24117_clone_params(fe);
1411
1412 dev_dbg(&state->priv->i2c->dev,
1413 "%s: delsys = %d\n", __func__, state->dcur.delsys);
1414 dev_dbg(&state->priv->i2c->dev,
1415 "%s: modulation = %d\n", __func__, state->dcur.modulation);
1416 dev_dbg(&state->priv->i2c->dev,
1417 "%s: frequency = %d\n", __func__, state->dcur.frequency);
1418 dev_dbg(&state->priv->i2c->dev,
1419 "%s: pilot = %d (val = 0x%02x)\n", __func__,
1420 state->dcur.pilot, state->dcur.pilot_val);
1421 dev_dbg(&state->priv->i2c->dev,
1422 "%s: retune = %d\n", __func__, retune);
1423 dev_dbg(&state->priv->i2c->dev,
1424 "%s: rolloff = %d (val = 0x%02x)\n", __func__,
1425 state->dcur.rolloff, state->dcur.rolloff_val);
1426 dev_dbg(&state->priv->i2c->dev,
1427 "%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1428 dev_dbg(&state->priv->i2c->dev,
1429 "%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1430 state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1431 dev_dbg(&state->priv->i2c->dev,
1432 "%s: Inversion = %d (val = 0x%02x)\n", __func__,
1433 state->dcur.inversion, state->dcur.inversion_val);
1434
1435 /* Prepare a tune request */
1436 cmd.args[0] = CMD_TUNEREQUEST;
1437
1438 /* demod */
1439 cmd.args[1] = state->demod;
1440
1441 /* Frequency */
1442 cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1443 cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1444 cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1445
1446 /* Symbol Rate */
1447 cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1448 cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1449
1450 /* Automatic Inversion */
1451 cmd.args[7] = state->dcur.inversion_val;
1452
1453 /* Modulation / FEC / Pilot */
1454 cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1455
1456 cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1457 cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1458
1459 cmd.args[11] = state->dcur.rolloff_val;
1460 cmd.args[12] = state->dcur.fec_mask;
1461
1462 if (state->dcur.symbol_rate > 30000000) {
1463 reg_ratediv = 0x04;
1464 reg_clkdiv = 0x02;
1465 } else if (state->dcur.symbol_rate > 10000000) {
1466 reg_ratediv = 0x06;
1467 reg_clkdiv = 0x03;
1468 } else {
1469 reg_ratediv = 0x0a;
1470 reg_clkdiv = 0x05;
1471 }
1472
1473 cmd.args[13] = reg_ratediv;
1474 cmd.args[14] = reg_clkdiv;
1475
1476 cx24117_writereg(state, (state->demod == 0) ?
1477 CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1478 cx24117_writereg(state, (state->demod == 0) ?
1479 CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1480
1481 cmd.args[15] = CX24117_PNE;
1482 cmd.len = 16;
1483
1484 do {
1485 /* Reset status register */
1486 status = cx24117_readreg(state, (state->demod == 0) ?
1487 CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1488 CX24117_SIGNAL_MASK;
1489
1490 dev_dbg(&state->priv->i2c->dev,
1491 "%s() demod%d status_setfe = %02x\n",
1492 __func__, state->demod, status);
1493
1494 cx24117_writereg(state, (state->demod == 0) ?
1495 CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1496
1497 /* Tune */
1498 ret = cx24117_cmd_execute(fe, &cmd);
1499 if (ret != 0)
1500 break;
1501
1502 /*
1503 * Wait for up to 500 ms before retrying
1504 *
1505 * If we are able to tune then generally it occurs within 100ms.
1506 * If it takes longer, try a different rolloff setting.
1507 */
1508 for (i = 0; i < 50; i++) {
1509 cx24117_read_status(fe, &tunerstat);
1510 status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1511 if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1512 dev_dbg(&state->priv->i2c->dev,
1513 "%s() demod%d tuned\n",
1514 __func__, state->demod);
1515 return 0;
1516 }
1517 msleep(20);
1518 }
1519
1520 dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1521 __func__, state->demod);
1522
1523 /* try next rolloff value */
1524 if (state->dcur.rolloff == 3)
1525 cmd.args[11]--;
1526
1527 } while (--retune);
1528 return -EINVAL;
1529 }
1530
1531 static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1532 unsigned int mode_flags, unsigned int *delay, enum fe_status *status)
1533 {
1534 struct cx24117_state *state = fe->demodulator_priv;
1535
1536 dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1537 __func__, state->demod);
1538
1539 *delay = HZ / 5;
1540 if (re_tune) {
1541 int ret = cx24117_set_frontend(fe);
1542 if (ret)
1543 return ret;
1544 }
1545 return cx24117_read_status(fe, status);
1546 }
1547
1548 static enum dvbfe_algo cx24117_get_algo(struct dvb_frontend *fe)
1549 {
1550 return DVBFE_ALGO_HW;
1551 }
1552
1553 static int cx24117_get_frontend(struct dvb_frontend *fe,
1554 struct dtv_frontend_properties *c)
1555 {
1556 struct cx24117_state *state = fe->demodulator_priv;
1557 struct cx24117_cmd cmd;
1558 u8 reg, st, inv;
1559 int ret, idx;
1560 unsigned int freq;
1561 short srate_os, freq_os;
1562
1563 u8 buf[0x1f-4];
1564
1565 /* Read current tune parameters */
1566 cmd.args[0] = CMD_GETCTLACC;
1567 cmd.args[1] = (u8) state->demod;
1568 cmd.len = 2;
1569 ret = cx24117_cmd_execute(fe, &cmd);
1570 if (ret != 0)
1571 return ret;
1572
1573 /* read all required regs at once */
1574 reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1575 ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1576 if (ret != 0)
1577 return ret;
1578
1579 st = buf[5];
1580
1581 /* get spectral inversion */
1582 inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1583 if (inv == 0)
1584 c->inversion = INVERSION_OFF;
1585 else
1586 c->inversion = INVERSION_ON;
1587
1588 /* modulation and fec */
1589 idx = st & 0x3f;
1590 if (c->delivery_system == SYS_DVBS2) {
1591 if (idx > 11)
1592 idx += 9;
1593 else
1594 idx += 7;
1595 }
1596
1597 c->modulation = cx24117_modfec_modes[idx].modulation;
1598 c->fec_inner = cx24117_modfec_modes[idx].fec;
1599
1600 /* frequency */
1601 freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1602 freq_os = (buf[8] << 8) | buf[9];
1603 c->frequency = freq + freq_os;
1604
1605 /* symbol rate */
1606 srate_os = (buf[10] << 8) | buf[11];
1607 c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1608 return 0;
1609 }
1610
1611 static const struct dvb_frontend_ops cx24117_ops = {
1612 .delsys = { SYS_DVBS, SYS_DVBS2 },
1613 .info = {
1614 .name = "Conexant CX24117/CX24132",
1615 .frequency_min_hz = 950 * MHz,
1616 .frequency_max_hz = 2150 * MHz,
1617 .frequency_stepsize_hz = 1011 * kHz,
1618 .frequency_tolerance_hz = 5 * MHz,
1619 .symbol_rate_min = 1000000,
1620 .symbol_rate_max = 45000000,
1621 .caps = FE_CAN_INVERSION_AUTO |
1622 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1623 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1624 FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1625 FE_CAN_2G_MODULATION |
1626 FE_CAN_QPSK | FE_CAN_RECOVER
1627 },
1628
1629 .release = cx24117_release,
1630
1631 .init = cx24117_initfe,
1632 .sleep = cx24117_sleep,
1633 .read_status = cx24117_read_status,
1634 .read_ber = cx24117_read_ber,
1635 .read_signal_strength = cx24117_read_signal_strength,
1636 .read_snr = cx24117_read_snr,
1637 .read_ucblocks = cx24117_read_ucblocks,
1638 .set_tone = cx24117_set_tone,
1639 .set_voltage = cx24117_set_voltage,
1640 .diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1641 .diseqc_send_burst = cx24117_diseqc_send_burst,
1642 .get_frontend_algo = cx24117_get_algo,
1643 .tune = cx24117_tune,
1644
1645 .set_frontend = cx24117_set_frontend,
1646 .get_frontend = cx24117_get_frontend,
1647 };
1648
1649
1650 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1651 MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1652 MODULE_LICENSE("GPL");
1653 MODULE_VERSION("1.1");
1654 MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1655
Linux with added FPC-III support