Commit | Line | Data |
---|---|---|
74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e4aab64c IL |
2 | /* |
3 | Driver for ST STV0288 demodulator | |
4 | Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de | |
5 | for Reel Multimedia | |
6 | Copyright (C) 2008 TurboSight.com, Bob Liu <bob@turbosight.com> | |
7 | Copyright (C) 2008 Igor M. Liplianin <liplianin@me.by> | |
8 | Removed stb6000 specific tuner code and revised some | |
9 | procedures. | |
352a587c MP |
10 | 2010-09-01 Josef Pavlik <josef@pavlik.it> |
11 | Fixed diseqc_msg, diseqc_burst and set_tone problems | |
e4aab64c | 12 | |
e4aab64c IL |
13 | |
14 | */ | |
15 | ||
16 | #include <linux/init.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/jiffies.h> | |
22 | #include <asm/div64.h> | |
23 | ||
fada1935 | 24 | #include <media/dvb_frontend.h> |
e4aab64c IL |
25 | #include "stv0288.h" |
26 | ||
27 | struct stv0288_state { | |
28 | struct i2c_adapter *i2c; | |
29 | const struct stv0288_config *config; | |
30 | struct dvb_frontend frontend; | |
31 | ||
32 | u8 initialised:1; | |
33 | u32 tuner_frequency; | |
34 | u32 symbol_rate; | |
0df289a2 | 35 | enum fe_code_rate fec_inner; |
e4aab64c IL |
36 | int errmode; |
37 | }; | |
38 | ||
39 | #define STATUS_BER 0 | |
40 | #define STATUS_UCBLOCKS 1 | |
41 | ||
42 | static int debug; | |
43 | static int debug_legacy_dish_switch; | |
44 | #define dprintk(args...) \ | |
45 | do { \ | |
46 | if (debug) \ | |
47 | printk(KERN_DEBUG "stv0288: " args); \ | |
48 | } while (0) | |
49 | ||
50 | ||
51 | static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data) | |
52 | { | |
53 | int ret; | |
54 | u8 buf[] = { reg, data }; | |
55 | struct i2c_msg msg = { | |
56 | .addr = state->config->demod_address, | |
57 | .flags = 0, | |
58 | .buf = buf, | |
59 | .len = 2 | |
60 | }; | |
61 | ||
62 | ret = i2c_transfer(state->i2c, &msg, 1); | |
63 | ||
64 | if (ret != 1) | |
4bd69e7b MCC |
65 | dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n", |
66 | __func__, reg, data, ret); | |
e4aab64c IL |
67 | |
68 | return (ret != 1) ? -EREMOTEIO : 0; | |
69 | } | |
70 | ||
2e4e98e7 | 71 | static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len) |
e4aab64c IL |
72 | { |
73 | struct stv0288_state *state = fe->demodulator_priv; | |
74 | ||
75 | if (len != 2) | |
76 | return -EINVAL; | |
77 | ||
78 | return stv0288_writeregI(state, buf[0], buf[1]); | |
79 | } | |
80 | ||
81 | static u8 stv0288_readreg(struct stv0288_state *state, u8 reg) | |
82 | { | |
83 | int ret; | |
84 | u8 b0[] = { reg }; | |
85 | u8 b1[] = { 0 }; | |
86 | struct i2c_msg msg[] = { | |
87 | { | |
88 | .addr = state->config->demod_address, | |
89 | .flags = 0, | |
90 | .buf = b0, | |
91 | .len = 1 | |
92 | }, { | |
93 | .addr = state->config->demod_address, | |
94 | .flags = I2C_M_RD, | |
95 | .buf = b1, | |
96 | .len = 1 | |
97 | } | |
98 | }; | |
99 | ||
100 | ret = i2c_transfer(state->i2c, msg, 2); | |
101 | ||
102 | if (ret != 2) | |
103 | dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", | |
104 | __func__, reg, ret); | |
105 | ||
106 | return b1[0]; | |
107 | } | |
108 | ||
109 | static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate) | |
110 | { | |
111 | struct stv0288_state *state = fe->demodulator_priv; | |
112 | unsigned int temp; | |
113 | unsigned char b[3]; | |
114 | ||
115 | if ((srate < 1000000) || (srate > 45000000)) | |
116 | return -EINVAL; | |
117 | ||
59152b1c | 118 | stv0288_writeregI(state, 0x22, 0); |
119 | stv0288_writeregI(state, 0x23, 0); | |
120 | stv0288_writeregI(state, 0x2b, 0xff); | |
121 | stv0288_writeregI(state, 0x2c, 0xf7); | |
122 | ||
e4aab64c IL |
123 | temp = (unsigned int)srate / 1000; |
124 | ||
451dfbe9 MCC |
125 | temp = temp * 32768; |
126 | temp = temp / 25; | |
127 | temp = temp / 125; | |
128 | b[0] = (unsigned char)((temp >> 12) & 0xff); | |
129 | b[1] = (unsigned char)((temp >> 4) & 0xff); | |
130 | b[2] = (unsigned char)((temp << 4) & 0xf0); | |
131 | stv0288_writeregI(state, 0x28, 0x80); /* SFRH */ | |
132 | stv0288_writeregI(state, 0x29, 0); /* SFRM */ | |
133 | stv0288_writeregI(state, 0x2a, 0); /* SFRL */ | |
134 | ||
135 | stv0288_writeregI(state, 0x28, b[0]); | |
136 | stv0288_writeregI(state, 0x29, b[1]); | |
137 | stv0288_writeregI(state, 0x2a, b[2]); | |
138 | dprintk("stv0288: stv0288_set_symbolrate\n"); | |
e4aab64c IL |
139 | |
140 | return 0; | |
141 | } | |
142 | ||
143 | static int stv0288_send_diseqc_msg(struct dvb_frontend *fe, | |
144 | struct dvb_diseqc_master_cmd *m) | |
145 | { | |
146 | struct stv0288_state *state = fe->demodulator_priv; | |
147 | ||
148 | int i; | |
149 | ||
150 | dprintk("%s\n", __func__); | |
151 | ||
152 | stv0288_writeregI(state, 0x09, 0); | |
153 | msleep(30); | |
352a587c | 154 | stv0288_writeregI(state, 0x05, 0x12);/* modulated mode, single shot */ |
e4aab64c IL |
155 | |
156 | for (i = 0; i < m->msg_len; i++) { | |
157 | if (stv0288_writeregI(state, 0x06, m->msg[i])) | |
158 | return -EREMOTEIO; | |
e4aab64c | 159 | } |
352a587c | 160 | msleep(m->msg_len*12); |
e4aab64c IL |
161 | return 0; |
162 | } | |
163 | ||
164 | static int stv0288_send_diseqc_burst(struct dvb_frontend *fe, | |
0df289a2 | 165 | enum fe_sec_mini_cmd burst) |
e4aab64c IL |
166 | { |
167 | struct stv0288_state *state = fe->demodulator_priv; | |
168 | ||
169 | dprintk("%s\n", __func__); | |
170 | ||
352a587c | 171 | if (stv0288_writeregI(state, 0x05, 0x03))/* burst mode, single shot */ |
e4aab64c IL |
172 | return -EREMOTEIO; |
173 | ||
174 | if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff)) | |
175 | return -EREMOTEIO; | |
176 | ||
352a587c MP |
177 | msleep(15); |
178 | if (stv0288_writeregI(state, 0x05, 0x12)) | |
e4aab64c IL |
179 | return -EREMOTEIO; |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
0df289a2 | 184 | static int stv0288_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone) |
e4aab64c IL |
185 | { |
186 | struct stv0288_state *state = fe->demodulator_priv; | |
187 | ||
188 | switch (tone) { | |
189 | case SEC_TONE_ON: | |
352a587c | 190 | if (stv0288_writeregI(state, 0x05, 0x10))/* cont carrier */ |
e4aab64c | 191 | return -EREMOTEIO; |
352a587c | 192 | break; |
e4aab64c IL |
193 | |
194 | case SEC_TONE_OFF: | |
352a587c | 195 | if (stv0288_writeregI(state, 0x05, 0x12))/* burst mode off*/ |
e4aab64c | 196 | return -EREMOTEIO; |
352a587c | 197 | break; |
e4aab64c IL |
198 | |
199 | default: | |
200 | return -EINVAL; | |
201 | } | |
352a587c | 202 | return 0; |
e4aab64c IL |
203 | } |
204 | ||
205 | static u8 stv0288_inittab[] = { | |
206 | 0x01, 0x15, | |
207 | 0x02, 0x20, | |
208 | 0x09, 0x0, | |
209 | 0x0a, 0x4, | |
210 | 0x0b, 0x0, | |
211 | 0x0c, 0x0, | |
212 | 0x0d, 0x0, | |
213 | 0x0e, 0xd4, | |
214 | 0x0f, 0x30, | |
215 | 0x11, 0x80, | |
216 | 0x12, 0x03, | |
217 | 0x13, 0x48, | |
218 | 0x14, 0x84, | |
219 | 0x15, 0x45, | |
220 | 0x16, 0xb7, | |
221 | 0x17, 0x9c, | |
222 | 0x18, 0x0, | |
223 | 0x19, 0xa6, | |
224 | 0x1a, 0x88, | |
225 | 0x1b, 0x8f, | |
226 | 0x1c, 0xf0, | |
227 | 0x20, 0x0b, | |
228 | 0x21, 0x54, | |
229 | 0x22, 0x0, | |
230 | 0x23, 0x0, | |
231 | 0x2b, 0xff, | |
232 | 0x2c, 0xf7, | |
233 | 0x30, 0x0, | |
234 | 0x31, 0x1e, | |
235 | 0x32, 0x14, | |
236 | 0x33, 0x0f, | |
237 | 0x34, 0x09, | |
238 | 0x35, 0x0c, | |
239 | 0x36, 0x05, | |
240 | 0x37, 0x2f, | |
241 | 0x38, 0x16, | |
242 | 0x39, 0xbe, | |
243 | 0x3a, 0x0, | |
244 | 0x3b, 0x13, | |
245 | 0x3c, 0x11, | |
246 | 0x3d, 0x30, | |
247 | 0x40, 0x63, | |
248 | 0x41, 0x04, | |
bb19a421 | 249 | 0x42, 0x20, |
e4aab64c IL |
250 | 0x43, 0x00, |
251 | 0x44, 0x00, | |
252 | 0x45, 0x00, | |
253 | 0x46, 0x00, | |
254 | 0x47, 0x00, | |
255 | 0x4a, 0x00, | |
256 | 0x50, 0x10, | |
257 | 0x51, 0x38, | |
258 | 0x52, 0x21, | |
259 | 0x58, 0x54, | |
260 | 0x59, 0x86, | |
261 | 0x5a, 0x0, | |
262 | 0x5b, 0x9b, | |
263 | 0x5c, 0x08, | |
264 | 0x5d, 0x7f, | |
265 | 0x5e, 0x0, | |
266 | 0x5f, 0xff, | |
267 | 0x70, 0x0, | |
268 | 0x71, 0x0, | |
269 | 0x72, 0x0, | |
270 | 0x74, 0x0, | |
271 | 0x75, 0x0, | |
272 | 0x76, 0x0, | |
273 | 0x81, 0x0, | |
274 | 0x82, 0x3f, | |
275 | 0x83, 0x3f, | |
276 | 0x84, 0x0, | |
277 | 0x85, 0x0, | |
278 | 0x88, 0x0, | |
279 | 0x89, 0x0, | |
280 | 0x8a, 0x0, | |
281 | 0x8b, 0x0, | |
282 | 0x8c, 0x0, | |
283 | 0x90, 0x0, | |
284 | 0x91, 0x0, | |
285 | 0x92, 0x0, | |
286 | 0x93, 0x0, | |
287 | 0x94, 0x1c, | |
288 | 0x97, 0x0, | |
289 | 0xa0, 0x48, | |
290 | 0xa1, 0x0, | |
291 | 0xb0, 0xb8, | |
292 | 0xb1, 0x3a, | |
293 | 0xb2, 0x10, | |
294 | 0xb3, 0x82, | |
295 | 0xb4, 0x80, | |
296 | 0xb5, 0x82, | |
297 | 0xb6, 0x82, | |
298 | 0xb7, 0x82, | |
299 | 0xb8, 0x20, | |
300 | 0xb9, 0x0, | |
301 | 0xf0, 0x0, | |
302 | 0xf1, 0x0, | |
303 | 0xf2, 0xc0, | |
304 | 0x51, 0x36, | |
305 | 0x52, 0x09, | |
306 | 0x53, 0x94, | |
307 | 0x54, 0x62, | |
308 | 0x55, 0x29, | |
309 | 0x56, 0x64, | |
310 | 0x57, 0x2b, | |
311 | 0xff, 0xff, | |
312 | }; | |
313 | ||
0df289a2 MCC |
314 | static int stv0288_set_voltage(struct dvb_frontend *fe, |
315 | enum fe_sec_voltage volt) | |
e4aab64c IL |
316 | { |
317 | dprintk("%s: %s\n", __func__, | |
318 | volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : | |
319 | volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | static int stv0288_init(struct dvb_frontend *fe) | |
325 | { | |
326 | struct stv0288_state *state = fe->demodulator_priv; | |
327 | int i; | |
de9be0ea IL |
328 | u8 reg; |
329 | u8 val; | |
e4aab64c IL |
330 | |
331 | dprintk("stv0288: init chip\n"); | |
332 | stv0288_writeregI(state, 0x41, 0x04); | |
333 | msleep(50); | |
334 | ||
de9be0ea IL |
335 | /* we have default inittab */ |
336 | if (state->config->inittab == NULL) { | |
337 | for (i = 0; !(stv0288_inittab[i] == 0xff && | |
e4aab64c | 338 | stv0288_inittab[i + 1] == 0xff); i += 2) |
de9be0ea IL |
339 | stv0288_writeregI(state, stv0288_inittab[i], |
340 | stv0288_inittab[i + 1]); | |
341 | } else { | |
342 | for (i = 0; ; i += 2) { | |
343 | reg = state->config->inittab[i]; | |
344 | val = state->config->inittab[i+1]; | |
345 | if (reg == 0xff && val == 0xff) | |
346 | break; | |
347 | stv0288_writeregI(state, reg, val); | |
348 | } | |
349 | } | |
e4aab64c IL |
350 | return 0; |
351 | } | |
352 | ||
0df289a2 | 353 | static int stv0288_read_status(struct dvb_frontend *fe, enum fe_status *status) |
e4aab64c IL |
354 | { |
355 | struct stv0288_state *state = fe->demodulator_priv; | |
356 | ||
357 | u8 sync = stv0288_readreg(state, 0x24); | |
358 | if (sync == 255) | |
359 | sync = 0; | |
360 | ||
361 | dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync); | |
362 | ||
363 | *status = 0; | |
b50b3a1a MP |
364 | if (sync & 0x80) |
365 | *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; | |
366 | if (sync & 0x10) | |
367 | *status |= FE_HAS_VITERBI; | |
368 | if (sync & 0x08) { | |
e4aab64c IL |
369 | *status |= FE_HAS_LOCK; |
370 | dprintk("stv0288 has locked\n"); | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber) | |
377 | { | |
378 | struct stv0288_state *state = fe->demodulator_priv; | |
379 | ||
380 | if (state->errmode != STATUS_BER) | |
381 | return 0; | |
382 | *ber = (stv0288_readreg(state, 0x26) << 8) | | |
383 | stv0288_readreg(state, 0x27); | |
384 | dprintk("stv0288_read_ber %d\n", *ber); | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | ||
390 | static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength) | |
391 | { | |
392 | struct stv0288_state *state = fe->demodulator_priv; | |
393 | ||
394 | s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8)); | |
395 | ||
396 | ||
397 | signal = signal * 5 / 4; | |
398 | *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; | |
399 | dprintk("stv0288_read_signal_strength %d\n", *strength); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | static int stv0288_sleep(struct dvb_frontend *fe) | |
404 | { | |
405 | struct stv0288_state *state = fe->demodulator_priv; | |
406 | ||
407 | stv0288_writeregI(state, 0x41, 0x84); | |
408 | state->initialised = 0; | |
409 | ||
410 | return 0; | |
411 | } | |
412 | static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr) | |
413 | { | |
414 | struct stv0288_state *state = fe->demodulator_priv; | |
415 | ||
416 | s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8) | |
417 | | stv0288_readreg(state, 0x2e)); | |
418 | xsnr = 3 * (xsnr - 0xa100); | |
419 | *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; | |
420 | dprintk("stv0288_read_snr %d\n", *snr); | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) | |
426 | { | |
427 | struct stv0288_state *state = fe->demodulator_priv; | |
428 | ||
429 | if (state->errmode != STATUS_BER) | |
430 | return 0; | |
431 | *ucblocks = (stv0288_readreg(state, 0x26) << 8) | | |
432 | stv0288_readreg(state, 0x27); | |
433 | dprintk("stv0288_read_ber %d\n", *ucblocks); | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
5c6b4e2b | 438 | static int stv0288_set_frontend(struct dvb_frontend *fe) |
e4aab64c IL |
439 | { |
440 | struct stv0288_state *state = fe->demodulator_priv; | |
441 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
442 | ||
443 | char tm; | |
444 | unsigned char tda[3]; | |
59152b1c | 445 | u8 reg, time_out = 0; |
e4aab64c IL |
446 | |
447 | dprintk("%s : FE_SET_FRONTEND\n", __func__); | |
448 | ||
449 | if (c->delivery_system != SYS_DVBS) { | |
4bd69e7b MCC |
450 | dprintk("%s: unsupported delivery system selected (%d)\n", |
451 | __func__, c->delivery_system); | |
452 | return -EOPNOTSUPP; | |
e4aab64c IL |
453 | } |
454 | ||
455 | if (state->config->set_ts_params) | |
456 | state->config->set_ts_params(fe, 0); | |
457 | ||
458 | /* only frequency & symbol_rate are used for tuner*/ | |
e4aab64c | 459 | if (fe->ops.tuner_ops.set_params) { |
14d24d14 | 460 | fe->ops.tuner_ops.set_params(fe); |
e4aab64c IL |
461 | if (fe->ops.i2c_gate_ctrl) |
462 | fe->ops.i2c_gate_ctrl(fe, 0); | |
463 | } | |
464 | ||
465 | udelay(10); | |
466 | stv0288_set_symbolrate(fe, c->symbol_rate); | |
467 | /* Carrier lock control register */ | |
468 | stv0288_writeregI(state, 0x15, 0xc5); | |
469 | ||
e4aab64c | 470 | tda[2] = 0x0; /* CFRL */ |
59152b1c | 471 | for (tm = -9; tm < 7;) { |
e4aab64c | 472 | /* Viterbi status */ |
59152b1c | 473 | reg = stv0288_readreg(state, 0x24); |
474 | if (reg & 0x8) | |
475 | break; | |
476 | if (reg & 0x80) { | |
477 | time_out++; | |
478 | if (time_out > 10) | |
479 | break; | |
480 | tda[2] += 40; | |
481 | if (tda[2] < 40) | |
482 | tm++; | |
483 | } else { | |
e4aab64c | 484 | tm++; |
59152b1c | 485 | tda[2] = 0; |
486 | time_out = 0; | |
487 | } | |
e4aab64c IL |
488 | tda[1] = (unsigned char)tm; |
489 | stv0288_writeregI(state, 0x2b, tda[1]); | |
490 | stv0288_writeregI(state, 0x2c, tda[2]); | |
77768e4b | 491 | msleep(30); |
e4aab64c | 492 | } |
e4aab64c IL |
493 | state->tuner_frequency = c->frequency; |
494 | state->fec_inner = FEC_AUTO; | |
495 | state->symbol_rate = c->symbol_rate; | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) | |
501 | { | |
502 | struct stv0288_state *state = fe->demodulator_priv; | |
503 | ||
504 | if (enable) | |
505 | stv0288_writeregI(state, 0x01, 0xb5); | |
506 | else | |
507 | stv0288_writeregI(state, 0x01, 0x35); | |
508 | ||
509 | udelay(1); | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
514 | static void stv0288_release(struct dvb_frontend *fe) | |
515 | { | |
516 | struct stv0288_state *state = fe->demodulator_priv; | |
517 | kfree(state); | |
518 | } | |
519 | ||
bd336e63 | 520 | static const struct dvb_frontend_ops stv0288_ops = { |
5c6b4e2b | 521 | .delsys = { SYS_DVBS }, |
e4aab64c IL |
522 | .info = { |
523 | .name = "ST STV0288 DVB-S", | |
f1b1eabf MCC |
524 | .frequency_min_hz = 950 * MHz, |
525 | .frequency_max_hz = 2150 * MHz, | |
526 | .frequency_stepsize_hz = 1 * MHz, | |
e4aab64c IL |
527 | .symbol_rate_min = 1000000, |
528 | .symbol_rate_max = 45000000, | |
529 | .symbol_rate_tolerance = 500, /* ppm */ | |
530 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
531 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | | |
532 | FE_CAN_QPSK | | |
533 | FE_CAN_FEC_AUTO | |
534 | }, | |
535 | ||
536 | .release = stv0288_release, | |
537 | .init = stv0288_init, | |
538 | .sleep = stv0288_sleep, | |
539 | .write = stv0288_write, | |
540 | .i2c_gate_ctrl = stv0288_i2c_gate_ctrl, | |
541 | .read_status = stv0288_read_status, | |
542 | .read_ber = stv0288_read_ber, | |
543 | .read_signal_strength = stv0288_read_signal_strength, | |
544 | .read_snr = stv0288_read_snr, | |
545 | .read_ucblocks = stv0288_read_ucblocks, | |
546 | .diseqc_send_master_cmd = stv0288_send_diseqc_msg, | |
547 | .diseqc_send_burst = stv0288_send_diseqc_burst, | |
548 | .set_tone = stv0288_set_tone, | |
549 | .set_voltage = stv0288_set_voltage, | |
550 | ||
5c6b4e2b | 551 | .set_frontend = stv0288_set_frontend, |
e4aab64c IL |
552 | }; |
553 | ||
554 | struct dvb_frontend *stv0288_attach(const struct stv0288_config *config, | |
555 | struct i2c_adapter *i2c) | |
556 | { | |
557 | struct stv0288_state *state = NULL; | |
558 | int id; | |
559 | ||
560 | /* allocate memory for the internal state */ | |
084e24ac | 561 | state = kzalloc(sizeof(struct stv0288_state), GFP_KERNEL); |
e4aab64c IL |
562 | if (state == NULL) |
563 | goto error; | |
564 | ||
565 | /* setup the state */ | |
566 | state->config = config; | |
567 | state->i2c = i2c; | |
568 | state->initialised = 0; | |
569 | state->tuner_frequency = 0; | |
570 | state->symbol_rate = 0; | |
571 | state->fec_inner = 0; | |
572 | state->errmode = STATUS_BER; | |
573 | ||
574 | stv0288_writeregI(state, 0x41, 0x04); | |
575 | msleep(200); | |
576 | id = stv0288_readreg(state, 0x00); | |
577 | dprintk("stv0288 id %x\n", id); | |
578 | ||
579 | /* register 0x00 contains 0x11 for STV0288 */ | |
580 | if (id != 0x11) | |
581 | goto error; | |
582 | ||
583 | /* create dvb_frontend */ | |
584 | memcpy(&state->frontend.ops, &stv0288_ops, | |
585 | sizeof(struct dvb_frontend_ops)); | |
586 | state->frontend.demodulator_priv = state; | |
587 | return &state->frontend; | |
588 | ||
589 | error: | |
590 | kfree(state); | |
591 | ||
592 | return NULL; | |
593 | } | |
594 | EXPORT_SYMBOL(stv0288_attach); | |
595 | ||
596 | module_param(debug_legacy_dish_switch, int, 0444); | |
597 | MODULE_PARM_DESC(debug_legacy_dish_switch, | |
598 | "Enable timing analysis for Dish Network legacy switches"); | |
599 | ||
600 | module_param(debug, int, 0644); | |
601 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | |
602 | ||
603 | MODULE_DESCRIPTION("ST STV0288 DVB Demodulator driver"); | |
604 | MODULE_AUTHOR("Georg Acher, Bob Liu, Igor liplianin"); | |
605 | MODULE_LICENSE("GPL"); | |
606 |