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 
cx24117_writereg(struct cx24117_state * state,u8 reg,u8 data)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 
cx24117_writecmd(struct cx24117_state * state,struct cx24117_cmd * cmd)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 
cx24117_readreg(struct cx24117_state * state,u8 reg)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 
cx24117_readregN(struct cx24117_state * state,u8 reg,u8 * buf,int len)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 
cx24117_set_inversion(struct cx24117_state * state,enum fe_spectral_inversion inversion)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 
cx24117_lookup_fecmod(struct cx24117_state * state,enum fe_delivery_system d,enum fe_modulation m,enum fe_code_rate f)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 
cx24117_set_fec(struct cx24117_state * state,enum fe_delivery_system delsys,enum fe_modulation mod,enum fe_code_rate fec)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 
cx24117_set_symbolrate(struct cx24117_state * state,u32 rate)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 
cx24117_firmware_ondemand(struct dvb_frontend * fe)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  */
cx24117_cmd_execute_nolock(struct dvb_frontend * fe,struct cx24117_cmd * cmd)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 
cx24117_cmd_execute(struct dvb_frontend * fe,struct cx24117_cmd * cmd)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 
cx24117_load_firmware(struct dvb_frontend * fe,const struct firmware * fw)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 
cx24117_read_status(struct dvb_frontend * fe,enum fe_status * status)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 
cx24117_read_ber(struct dvb_frontend * fe,u32 * ber)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 
cx24117_read_signal_strength(struct dvb_frontend * fe,u16 * signal_strength)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 
cx24117_read_snr(struct dvb_frontend * fe,u16 * snr)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 
cx24117_read_ucblocks(struct dvb_frontend * fe,u32 * ucblocks)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 */
cx24117_clone_params(struct dvb_frontend * fe)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 */
cx24117_wait_for_lnb(struct dvb_frontend * fe)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 
cx24117_set_voltage(struct dvb_frontend * fe,enum fe_sec_voltage voltage)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 
cx24117_set_tone(struct dvb_frontend * fe,enum fe_sec_tone_mode tone)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 */
cx24117_diseqc_init(struct dvb_frontend * fe)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 */
cx24117_send_diseqc_msg(struct dvb_frontend * fe,struct dvb_diseqc_master_cmd * d)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 */
cx24117_diseqc_send_burst(struct dvb_frontend * fe,enum fe_sec_mini_cmd 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 
cx24117_get_priv(struct cx24117_priv ** priv,struct i2c_adapter * i2c,u8 client_address)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 
cx24117_release_priv(struct cx24117_priv * priv)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 
cx24117_release(struct dvb_frontend * fe)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 
cx24117_attach(const struct cx24117_config * config,struct i2c_adapter * i2c)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 	case 1:
1176 		/* new priv instance */
1177 		priv->i2c = i2c;
1178 		priv->demod_address = config->demod_address;
1179 		mutex_init(&priv->fe_lock);
1180 		break;
1181 	default:
1182 		/* existing priv instance */
1183 		break;
1184 	}
1185 
1186 	/* allocate memory for the internal state */
1187 	state = kzalloc(sizeof(struct cx24117_state), GFP_KERNEL);
1188 	if (state == NULL)
1189 		goto error2;
1190 
1191 	state->demod = demod - 1;
1192 	state->priv = priv;
1193 
1194 	dev_info(&state->priv->i2c->dev,
1195 		"%s: Attaching frontend %d\n",
1196 		KBUILD_MODNAME, state->demod);
1197 
1198 	/* create dvb_frontend */
1199 	memcpy(&state->frontend.ops, &cx24117_ops,
1200 		sizeof(struct dvb_frontend_ops));
1201 	state->frontend.demodulator_priv = state;
1202 	return &state->frontend;
1203 
1204 error2:
1205 	cx24117_release_priv(priv);
1206 error1:
1207 	return NULL;
1208 }
1209 EXPORT_SYMBOL_GPL(cx24117_attach);
1210 
1211 /*
1212  * Initialise or wake up device
1213  *
1214  * Power config will reset and load initial firmware if required
1215  */
cx24117_initfe(struct dvb_frontend * fe)1216 static int cx24117_initfe(struct dvb_frontend *fe)
1217 {
1218 	struct cx24117_state *state = fe->demodulator_priv;
1219 	struct cx24117_cmd cmd;
1220 	int ret;
1221 
1222 	dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1223 		__func__, state->demod);
1224 
1225 	mutex_lock(&state->priv->fe_lock);
1226 
1227 	/* Set sleep mode off */
1228 	cmd.args[0] = CMD_SET_SLEEPMODE;
1229 	cmd.args[1] = (state->demod ? 1 : 0);
1230 	cmd.args[2] = 0;
1231 	cmd.len = 3;
1232 	ret = cx24117_cmd_execute_nolock(fe, &cmd);
1233 	if (ret != 0)
1234 		goto exit;
1235 
1236 	ret = cx24117_diseqc_init(fe);
1237 	if (ret != 0)
1238 		goto exit;
1239 
1240 	/* Set BER control */
1241 	cmd.args[0] = CMD_BERCTRL;
1242 	cmd.args[1] = (state->demod ? 1 : 0);
1243 	cmd.args[2] = 0x10;
1244 	cmd.args[3] = 0x10;
1245 	cmd.len = 4;
1246 	ret = cx24117_cmd_execute_nolock(fe, &cmd);
1247 	if (ret != 0)
1248 		goto exit;
1249 
1250 	/* Set RS correction (enable/disable) */
1251 	cmd.args[0] = CMD_ENABLERSCORR;
1252 	cmd.args[1] = (state->demod ? 1 : 0);
1253 	cmd.args[2] = CX24117_OCC;
1254 	cmd.len = 3;
1255 	ret = cx24117_cmd_execute_nolock(fe, &cmd);
1256 	if (ret != 0)
1257 		goto exit;
1258 
1259 	/* Set GPIO direction */
1260 	/* Set as output - controls LNB power on/off */
1261 	cmd.args[0] = CMD_SET_GPIODIR;
1262 	cmd.args[1] = 0x30;
1263 	cmd.args[2] = 0x30;
1264 	cmd.len = 3;
1265 	ret = cx24117_cmd_execute_nolock(fe, &cmd);
1266 
1267 exit:
1268 	mutex_unlock(&state->priv->fe_lock);
1269 
1270 	return ret;
1271 }
1272 
1273 /*
1274  * Put device to sleep
1275  */
cx24117_sleep(struct dvb_frontend * fe)1276 static int cx24117_sleep(struct dvb_frontend *fe)
1277 {
1278 	struct cx24117_state *state = fe->demodulator_priv;
1279 	struct cx24117_cmd cmd;
1280 
1281 	dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1282 		__func__, state->demod);
1283 
1284 	/* Set sleep mode on */
1285 	cmd.args[0] = CMD_SET_SLEEPMODE;
1286 	cmd.args[1] = (state->demod ? 1 : 0);
1287 	cmd.args[2] = 1;
1288 	cmd.len = 3;
1289 	return cx24117_cmd_execute(fe, &cmd);
1290 }
1291 
1292 /* dvb-core told us to tune, the tv property cache will be complete,
1293  * it's safe for is to pull values and use them for tuning purposes.
1294  */
cx24117_set_frontend(struct dvb_frontend * fe)1295 static int cx24117_set_frontend(struct dvb_frontend *fe)
1296 {
1297 	struct cx24117_state *state = fe->demodulator_priv;
1298 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1299 	struct cx24117_cmd cmd;
1300 	enum fe_status tunerstat;
1301 	int i, status, ret, retune = 1;
1302 	u8 reg_clkdiv, reg_ratediv;
1303 
1304 	dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1305 		__func__, state->demod);
1306 
1307 	switch (c->delivery_system) {
1308 	case SYS_DVBS:
1309 		dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S\n",
1310 			__func__, state->demod);
1311 
1312 		/* Only QPSK is supported for DVB-S */
1313 		if (c->modulation != QPSK) {
1314 			dev_dbg(&state->priv->i2c->dev,
1315 				"%s() demod%d unsupported modulation (%d)\n",
1316 				__func__, state->demod, c->modulation);
1317 			return -EINVAL;
1318 		}
1319 
1320 		/* Pilot doesn't exist in DVB-S, turn bit off */
1321 		state->dnxt.pilot_val = CX24117_PILOT_OFF;
1322 
1323 		/* DVB-S only supports 0.35 */
1324 		state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1325 		break;
1326 
1327 	case SYS_DVBS2:
1328 		dev_dbg(&state->priv->i2c->dev, "%s() demod%d DVB-S2\n",
1329 			__func__, state->demod);
1330 
1331 		/*
1332 		 * NBC 8PSK/QPSK with DVB-S is supported for DVB-S2,
1333 		 * but not hardware auto detection
1334 		 */
1335 		if (c->modulation != PSK_8 && c->modulation != QPSK) {
1336 			dev_dbg(&state->priv->i2c->dev,
1337 				"%s() demod%d unsupported modulation (%d)\n",
1338 				__func__, state->demod, c->modulation);
1339 			return -EOPNOTSUPP;
1340 		}
1341 
1342 		switch (c->pilot) {
1343 		case PILOT_AUTO:
1344 			state->dnxt.pilot_val = CX24117_PILOT_AUTO;
1345 			break;
1346 		case PILOT_OFF:
1347 			state->dnxt.pilot_val = CX24117_PILOT_OFF;
1348 			break;
1349 		case PILOT_ON:
1350 			state->dnxt.pilot_val = CX24117_PILOT_ON;
1351 			break;
1352 		default:
1353 			dev_dbg(&state->priv->i2c->dev,
1354 				"%s() demod%d unsupported pilot mode (%d)\n",
1355 				__func__, state->demod, c->pilot);
1356 			return -EOPNOTSUPP;
1357 		}
1358 
1359 		switch (c->rolloff) {
1360 		case ROLLOFF_20:
1361 			state->dnxt.rolloff_val = CX24117_ROLLOFF_020;
1362 			break;
1363 		case ROLLOFF_25:
1364 			state->dnxt.rolloff_val = CX24117_ROLLOFF_025;
1365 			break;
1366 		case ROLLOFF_35:
1367 			state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1368 			break;
1369 		case ROLLOFF_AUTO:
1370 			state->dnxt.rolloff_val = CX24117_ROLLOFF_035;
1371 			/* soft-auto rolloff */
1372 			retune = 3;
1373 			break;
1374 		default:
1375 			dev_warn(&state->priv->i2c->dev,
1376 				"%s: demod%d unsupported rolloff (%d)\n",
1377 				KBUILD_MODNAME, state->demod, c->rolloff);
1378 			return -EOPNOTSUPP;
1379 		}
1380 		break;
1381 
1382 	default:
1383 		dev_warn(&state->priv->i2c->dev,
1384 			"%s: demod %d unsupported delivery system (%d)\n",
1385 			KBUILD_MODNAME, state->demod, c->delivery_system);
1386 		return -EINVAL;
1387 	}
1388 
1389 	state->dnxt.delsys = c->delivery_system;
1390 	state->dnxt.modulation = c->modulation;
1391 	state->dnxt.frequency = c->frequency;
1392 	state->dnxt.pilot = c->pilot;
1393 	state->dnxt.rolloff = c->rolloff;
1394 
1395 	ret = cx24117_set_inversion(state, c->inversion);
1396 	if (ret !=  0)
1397 		return ret;
1398 
1399 	ret = cx24117_set_fec(state,
1400 		c->delivery_system, c->modulation, c->fec_inner);
1401 	if (ret !=  0)
1402 		return ret;
1403 
1404 	ret = cx24117_set_symbolrate(state, c->symbol_rate);
1405 	if (ret !=  0)
1406 		return ret;
1407 
1408 	/* discard the 'current' tuning parameters and prepare to tune */
1409 	cx24117_clone_params(fe);
1410 
1411 	dev_dbg(&state->priv->i2c->dev,
1412 		"%s: delsys      = %d\n", __func__, state->dcur.delsys);
1413 	dev_dbg(&state->priv->i2c->dev,
1414 		"%s: modulation  = %d\n", __func__, state->dcur.modulation);
1415 	dev_dbg(&state->priv->i2c->dev,
1416 		"%s: frequency   = %d\n", __func__, state->dcur.frequency);
1417 	dev_dbg(&state->priv->i2c->dev,
1418 		"%s: pilot       = %d (val = 0x%02x)\n", __func__,
1419 		state->dcur.pilot, state->dcur.pilot_val);
1420 	dev_dbg(&state->priv->i2c->dev,
1421 		"%s: retune      = %d\n", __func__, retune);
1422 	dev_dbg(&state->priv->i2c->dev,
1423 		"%s: rolloff     = %d (val = 0x%02x)\n", __func__,
1424 		state->dcur.rolloff, state->dcur.rolloff_val);
1425 	dev_dbg(&state->priv->i2c->dev,
1426 		"%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
1427 	dev_dbg(&state->priv->i2c->dev,
1428 		"%s: FEC         = %d (mask/val = 0x%02x/0x%02x)\n", __func__,
1429 		state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
1430 	dev_dbg(&state->priv->i2c->dev,
1431 		"%s: Inversion   = %d (val = 0x%02x)\n", __func__,
1432 		state->dcur.inversion, state->dcur.inversion_val);
1433 
1434 	/* Prepare a tune request */
1435 	cmd.args[0] = CMD_TUNEREQUEST;
1436 
1437 	/* demod */
1438 	cmd.args[1] = state->demod;
1439 
1440 	/* Frequency */
1441 	cmd.args[2] = (state->dcur.frequency & 0xff0000) >> 16;
1442 	cmd.args[3] = (state->dcur.frequency & 0x00ff00) >> 8;
1443 	cmd.args[4] = (state->dcur.frequency & 0x0000ff);
1444 
1445 	/* Symbol Rate */
1446 	cmd.args[5] = ((state->dcur.symbol_rate / 1000) & 0xff00) >> 8;
1447 	cmd.args[6] = ((state->dcur.symbol_rate / 1000) & 0x00ff);
1448 
1449 	/* Automatic Inversion */
1450 	cmd.args[7] = state->dcur.inversion_val;
1451 
1452 	/* Modulation / FEC / Pilot */
1453 	cmd.args[8] = state->dcur.fec_val | state->dcur.pilot_val;
1454 
1455 	cmd.args[9] = CX24117_SEARCH_RANGE_KHZ >> 8;
1456 	cmd.args[10] = CX24117_SEARCH_RANGE_KHZ & 0xff;
1457 
1458 	cmd.args[11] = state->dcur.rolloff_val;
1459 	cmd.args[12] = state->dcur.fec_mask;
1460 
1461 	if (state->dcur.symbol_rate > 30000000) {
1462 		reg_ratediv = 0x04;
1463 		reg_clkdiv = 0x02;
1464 	} else if (state->dcur.symbol_rate > 10000000) {
1465 		reg_ratediv = 0x06;
1466 		reg_clkdiv = 0x03;
1467 	} else {
1468 		reg_ratediv = 0x0a;
1469 		reg_clkdiv = 0x05;
1470 	}
1471 
1472 	cmd.args[13] = reg_ratediv;
1473 	cmd.args[14] = reg_clkdiv;
1474 
1475 	cx24117_writereg(state, (state->demod == 0) ?
1476 		CX24117_REG_CLKDIV0 : CX24117_REG_CLKDIV1, reg_clkdiv);
1477 	cx24117_writereg(state, (state->demod == 0) ?
1478 		CX24117_REG_RATEDIV0 : CX24117_REG_RATEDIV1, reg_ratediv);
1479 
1480 	cmd.args[15] = CX24117_PNE;
1481 	cmd.len = 16;
1482 
1483 	do {
1484 		/* Reset status register */
1485 		status = cx24117_readreg(state, (state->demod == 0) ?
1486 			CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1) &
1487 			CX24117_SIGNAL_MASK;
1488 
1489 		dev_dbg(&state->priv->i2c->dev,
1490 			"%s() demod%d status_setfe = %02x\n",
1491 			__func__, state->demod, status);
1492 
1493 		cx24117_writereg(state, (state->demod == 0) ?
1494 			CX24117_REG_SSTATUS0 : CX24117_REG_SSTATUS1, status);
1495 
1496 		/* Tune */
1497 		ret = cx24117_cmd_execute(fe, &cmd);
1498 		if (ret != 0)
1499 			break;
1500 
1501 		/*
1502 		 * Wait for up to 500 ms before retrying
1503 		 *
1504 		 * If we are able to tune then generally it occurs within 100ms.
1505 		 * If it takes longer, try a different rolloff setting.
1506 		 */
1507 		for (i = 0; i < 50; i++) {
1508 			cx24117_read_status(fe, &tunerstat);
1509 			status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
1510 			if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
1511 				dev_dbg(&state->priv->i2c->dev,
1512 					"%s() demod%d tuned\n",
1513 					__func__, state->demod);
1514 				return 0;
1515 			}
1516 			msleep(20);
1517 		}
1518 
1519 		dev_dbg(&state->priv->i2c->dev, "%s() demod%d not tuned\n",
1520 			__func__, state->demod);
1521 
1522 		/* try next rolloff value */
1523 		if (state->dcur.rolloff == 3)
1524 			cmd.args[11]--;
1525 
1526 	} while (--retune);
1527 	return -EINVAL;
1528 }
1529 
cx24117_tune(struct dvb_frontend * fe,bool re_tune,unsigned int mode_flags,unsigned int * delay,enum fe_status * status)1530 static int cx24117_tune(struct dvb_frontend *fe, bool re_tune,
1531 	unsigned int mode_flags, unsigned int *delay, enum fe_status *status)
1532 {
1533 	struct cx24117_state *state = fe->demodulator_priv;
1534 
1535 	dev_dbg(&state->priv->i2c->dev, "%s() demod%d\n",
1536 		__func__, state->demod);
1537 
1538 	*delay = HZ / 5;
1539 	if (re_tune) {
1540 		int ret = cx24117_set_frontend(fe);
1541 		if (ret)
1542 			return ret;
1543 	}
1544 	return cx24117_read_status(fe, status);
1545 }
1546 
cx24117_get_algo(struct dvb_frontend * fe)1547 static enum dvbfe_algo cx24117_get_algo(struct dvb_frontend *fe)
1548 {
1549 	return DVBFE_ALGO_HW;
1550 }
1551 
cx24117_get_frontend(struct dvb_frontend * fe,struct dtv_frontend_properties * c)1552 static int cx24117_get_frontend(struct dvb_frontend *fe,
1553 				struct dtv_frontend_properties *c)
1554 {
1555 	struct cx24117_state *state = fe->demodulator_priv;
1556 	struct cx24117_cmd cmd;
1557 	u8 reg, st, inv;
1558 	int ret, idx;
1559 	unsigned int freq;
1560 	short srate_os, freq_os;
1561 
1562 	u8 buf[0x1f-4];
1563 
1564 	/* Read current tune parameters */
1565 	cmd.args[0] = CMD_GETCTLACC;
1566 	cmd.args[1] = (u8) state->demod;
1567 	cmd.len = 2;
1568 	ret = cx24117_cmd_execute(fe, &cmd);
1569 	if (ret != 0)
1570 		return ret;
1571 
1572 	/* read all required regs at once */
1573 	reg = (state->demod == 0) ? CX24117_REG_FREQ3_0 : CX24117_REG_FREQ3_1;
1574 	ret = cx24117_readregN(state, reg, buf, 0x1f-4);
1575 	if (ret != 0)
1576 		return ret;
1577 
1578 	st = buf[5];
1579 
1580 	/* get spectral inversion */
1581 	inv = (((state->demod == 0) ? ~st : st) >> 6) & 1;
1582 	if (inv == 0)
1583 		c->inversion = INVERSION_OFF;
1584 	else
1585 		c->inversion = INVERSION_ON;
1586 
1587 	/* modulation and fec */
1588 	idx = st & 0x3f;
1589 	if (c->delivery_system == SYS_DVBS2) {
1590 		if (idx > 11)
1591 			idx += 9;
1592 		else
1593 			idx += 7;
1594 	}
1595 
1596 	c->modulation = cx24117_modfec_modes[idx].modulation;
1597 	c->fec_inner = cx24117_modfec_modes[idx].fec;
1598 
1599 	/* frequency */
1600 	freq = (buf[0] << 16) | (buf[1] << 8) | buf[2];
1601 	freq_os = (buf[8] << 8) | buf[9];
1602 	c->frequency = freq + freq_os;
1603 
1604 	/* symbol rate */
1605 	srate_os = (buf[10] << 8) | buf[11];
1606 	c->symbol_rate = -1000 * srate_os + state->dcur.symbol_rate;
1607 	return 0;
1608 }
1609 
1610 static const struct dvb_frontend_ops cx24117_ops = {
1611 	.delsys = { SYS_DVBS, SYS_DVBS2 },
1612 	.info = {
1613 		.name = "Conexant CX24117/CX24132",
1614 		.frequency_min_hz =  950 * MHz,
1615 		.frequency_max_hz = 2150 * MHz,
1616 		.frequency_stepsize_hz = 1011 * kHz,
1617 		.frequency_tolerance_hz = 5 * MHz,
1618 		.symbol_rate_min = 1000000,
1619 		.symbol_rate_max = 45000000,
1620 		.caps = FE_CAN_INVERSION_AUTO |
1621 			FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1622 			FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
1623 			FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1624 			FE_CAN_2G_MODULATION |
1625 			FE_CAN_QPSK | FE_CAN_RECOVER
1626 	},
1627 
1628 	.release = cx24117_release,
1629 
1630 	.init = cx24117_initfe,
1631 	.sleep = cx24117_sleep,
1632 	.read_status = cx24117_read_status,
1633 	.read_ber = cx24117_read_ber,
1634 	.read_signal_strength = cx24117_read_signal_strength,
1635 	.read_snr = cx24117_read_snr,
1636 	.read_ucblocks = cx24117_read_ucblocks,
1637 	.set_tone = cx24117_set_tone,
1638 	.set_voltage = cx24117_set_voltage,
1639 	.diseqc_send_master_cmd = cx24117_send_diseqc_msg,
1640 	.diseqc_send_burst = cx24117_diseqc_send_burst,
1641 	.get_frontend_algo = cx24117_get_algo,
1642 	.tune = cx24117_tune,
1643 
1644 	.set_frontend = cx24117_set_frontend,
1645 	.get_frontend = cx24117_get_frontend,
1646 };
1647 
1648 
1649 MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24117/cx24132 hardware");
1650 MODULE_AUTHOR("Luis Alves (ljalvs@gmail.com)");
1651 MODULE_LICENSE("GPL");
1652 MODULE_VERSION("1.1");
1653 MODULE_FIRMWARE(CX24117_DEFAULT_FIRMWARE);
1654 
1655