Commit | Line | Data |
---|---|---|
f15da16d | 1 | /* |
b80dc1c6 DW |
2 | * Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator |
3 | * LGS8913, LGS8GL5, LGS8G75 | |
f15da16d DW |
4 | * experimental support LGS8G42, LGS8G52 |
5 | * | |
b80dc1c6 | 6 | * Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com> |
f15da16d DW |
7 | * Copyright (C) 2008 Sirius International (Hong Kong) Limited |
8 | * Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5) | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <asm/div64.h> | |
7638699c | 27 | #include <linux/firmware.h> |
f15da16d DW |
28 | |
29 | #include "dvb_frontend.h" | |
30 | ||
31 | #include "lgs8gxx.h" | |
32 | #include "lgs8gxx_priv.h" | |
33 | ||
34 | #define dprintk(args...) \ | |
35 | do { \ | |
36 | if (debug) \ | |
37 | printk(KERN_DEBUG "lgs8gxx: " args); \ | |
38 | } while (0) | |
39 | ||
40 | static int debug; | |
ba7d457d | 41 | static int fake_signal_str = 1; |
f15da16d | 42 | |
ccb7c593 TG |
43 | #define LGS8GXX_FIRMWARE "lgs8g75.fw" |
44 | ||
f15da16d DW |
45 | module_param(debug, int, 0644); |
46 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); | |
47 | ||
48 | module_param(fake_signal_str, int, 0644); | |
49 | MODULE_PARM_DESC(fake_signal_str, "fake signal strength for LGS8913." | |
ba7d457d | 50 | "Signal strength calculation is slow.(default:on)."); |
f15da16d DW |
51 | |
52 | /* LGS8GXX internal helper functions */ | |
53 | ||
54 | static int lgs8gxx_write_reg(struct lgs8gxx_state *priv, u8 reg, u8 data) | |
55 | { | |
56 | int ret; | |
57 | u8 buf[] = { reg, data }; | |
58 | struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 }; | |
59 | ||
60 | msg.addr = priv->config->demod_address; | |
b80dc1c6 | 61 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75 && reg >= 0xC0) |
f15da16d DW |
62 | msg.addr += 0x02; |
63 | ||
64 | if (debug >= 2) | |
c429e7b6 | 65 | dprintk("%s: reg=0x%02X, data=0x%02X\n", __func__, reg, data); |
f15da16d DW |
66 | |
67 | ret = i2c_transfer(priv->i2c, &msg, 1); | |
68 | ||
69 | if (ret != 1) | |
c429e7b6 | 70 | dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n", |
f15da16d DW |
71 | __func__, reg, data, ret); |
72 | ||
73 | return (ret != 1) ? -1 : 0; | |
74 | } | |
75 | ||
76 | static int lgs8gxx_read_reg(struct lgs8gxx_state *priv, u8 reg, u8 *p_data) | |
77 | { | |
78 | int ret; | |
79 | u8 dev_addr; | |
80 | ||
81 | u8 b0[] = { reg }; | |
82 | u8 b1[] = { 0 }; | |
83 | struct i2c_msg msg[] = { | |
84 | { .flags = 0, .buf = b0, .len = 1 }, | |
85 | { .flags = I2C_M_RD, .buf = b1, .len = 1 }, | |
86 | }; | |
87 | ||
88 | dev_addr = priv->config->demod_address; | |
b80dc1c6 | 89 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75 && reg >= 0xC0) |
f15da16d DW |
90 | dev_addr += 0x02; |
91 | msg[1].addr = msg[0].addr = dev_addr; | |
92 | ||
93 | ret = i2c_transfer(priv->i2c, msg, 2); | |
94 | if (ret != 2) { | |
c429e7b6 | 95 | dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg, ret); |
f15da16d DW |
96 | return -1; |
97 | } | |
98 | ||
99 | *p_data = b1[0]; | |
100 | if (debug >= 2) | |
c429e7b6 | 101 | dprintk("%s: reg=0x%02X, data=0x%02X\n", __func__, reg, b1[0]); |
f15da16d DW |
102 | return 0; |
103 | } | |
104 | ||
105 | static int lgs8gxx_soft_reset(struct lgs8gxx_state *priv) | |
106 | { | |
107 | lgs8gxx_write_reg(priv, 0x02, 0x00); | |
108 | msleep(1); | |
109 | lgs8gxx_write_reg(priv, 0x02, 0x01); | |
110 | msleep(100); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
b80dc1c6 DW |
115 | static int wait_reg_mask(struct lgs8gxx_state *priv, u8 reg, u8 mask, |
116 | u8 val, u8 delay, u8 tries) | |
117 | { | |
118 | u8 t; | |
119 | int i; | |
120 | ||
121 | for (i = 0; i < tries; i++) { | |
122 | lgs8gxx_read_reg(priv, reg, &t); | |
123 | ||
124 | if ((t & mask) == val) | |
125 | return 0; | |
126 | msleep(delay); | |
127 | } | |
128 | ||
129 | return 1; | |
130 | } | |
131 | ||
f15da16d DW |
132 | static int lgs8gxx_set_ad_mode(struct lgs8gxx_state *priv) |
133 | { | |
134 | const struct lgs8gxx_config *config = priv->config; | |
135 | u8 if_conf; | |
136 | ||
b80dc1c6 | 137 | if_conf = 0x10; /* AGC output on, RF_AGC output off; */ |
f15da16d DW |
138 | |
139 | if_conf |= | |
140 | ((config->ext_adc) ? 0x80 : 0x00) | | |
141 | ((config->if_neg_center) ? 0x04 : 0x00) | | |
142 | ((config->if_freq == 0) ? 0x08 : 0x00) | /* Baseband */ | |
b80dc1c6 DW |
143 | ((config->adc_signed) ? 0x02 : 0x00) | |
144 | ((config->if_neg_edge) ? 0x01 : 0x00); | |
f15da16d DW |
145 | |
146 | if (config->ext_adc && | |
147 | (config->prod == LGS8GXX_PROD_LGS8G52)) { | |
148 | lgs8gxx_write_reg(priv, 0xBA, 0x40); | |
149 | } | |
150 | ||
151 | lgs8gxx_write_reg(priv, 0x07, if_conf); | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int lgs8gxx_set_if_freq(struct lgs8gxx_state *priv, u32 freq /*in kHz*/) | |
157 | { | |
158 | u64 val; | |
159 | u32 v32; | |
160 | u32 if_clk; | |
161 | ||
162 | if_clk = priv->config->if_clk_freq; | |
163 | ||
164 | val = freq; | |
165 | if (freq != 0) { | |
3ab1b9ce | 166 | val <<= 32; |
f15da16d DW |
167 | if (if_clk != 0) |
168 | do_div(val, if_clk); | |
169 | v32 = val & 0xFFFFFFFF; | |
170 | dprintk("Set IF Freq to %dkHz\n", freq); | |
171 | } else { | |
172 | v32 = 0; | |
173 | dprintk("Set IF Freq to baseband\n"); | |
174 | } | |
175 | dprintk("AFC_INIT_FREQ = 0x%08X\n", v32); | |
176 | ||
b80dc1c6 DW |
177 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
178 | lgs8gxx_write_reg(priv, 0x08, 0xFF & (v32)); | |
179 | lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32 >> 8)); | |
180 | lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 16)); | |
181 | lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 24)); | |
182 | } else { | |
183 | lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32)); | |
184 | lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 8)); | |
185 | lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 16)); | |
186 | lgs8gxx_write_reg(priv, 0x0C, 0xFF & (v32 >> 24)); | |
187 | } | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
192 | static int lgs8gxx_get_afc_phase(struct lgs8gxx_state *priv) | |
193 | { | |
194 | u64 val; | |
195 | u32 v32 = 0; | |
196 | u8 reg_addr, t; | |
197 | int i; | |
198 | ||
199 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) | |
200 | reg_addr = 0x23; | |
201 | else | |
202 | reg_addr = 0x48; | |
203 | ||
204 | for (i = 0; i < 4; i++) { | |
205 | lgs8gxx_read_reg(priv, reg_addr, &t); | |
206 | v32 <<= 8; | |
207 | v32 |= t; | |
208 | reg_addr--; | |
209 | } | |
f15da16d | 210 | |
b80dc1c6 DW |
211 | val = v32; |
212 | val *= priv->config->if_clk_freq; | |
3ab1b9ce | 213 | val >>= 32; |
b80dc1c6 | 214 | dprintk("AFC = %u kHz\n", (u32)val); |
f15da16d DW |
215 | return 0; |
216 | } | |
217 | ||
218 | static int lgs8gxx_set_mode_auto(struct lgs8gxx_state *priv) | |
219 | { | |
220 | u8 t; | |
b80dc1c6 | 221 | u8 prod = priv->config->prod; |
f15da16d | 222 | |
b80dc1c6 | 223 | if (prod == LGS8GXX_PROD_LGS8913) |
f15da16d DW |
224 | lgs8gxx_write_reg(priv, 0xC6, 0x01); |
225 | ||
b80dc1c6 DW |
226 | if (prod == LGS8GXX_PROD_LGS8G75) { |
227 | lgs8gxx_read_reg(priv, 0x0C, &t); | |
228 | t &= (~0x04); | |
229 | lgs8gxx_write_reg(priv, 0x0C, t | 0x80); | |
230 | lgs8gxx_write_reg(priv, 0x39, 0x00); | |
231 | lgs8gxx_write_reg(priv, 0x3D, 0x04); | |
232 | } else if (prod == LGS8GXX_PROD_LGS8913 || | |
233 | prod == LGS8GXX_PROD_LGS8GL5 || | |
234 | prod == LGS8GXX_PROD_LGS8G42 || | |
235 | prod == LGS8GXX_PROD_LGS8G52 || | |
236 | prod == LGS8GXX_PROD_LGS8G54) { | |
237 | lgs8gxx_read_reg(priv, 0x7E, &t); | |
238 | lgs8gxx_write_reg(priv, 0x7E, t | 0x01); | |
239 | ||
240 | /* clear FEC self reset */ | |
241 | lgs8gxx_read_reg(priv, 0xC5, &t); | |
242 | lgs8gxx_write_reg(priv, 0xC5, t & 0xE0); | |
243 | } | |
f15da16d | 244 | |
b80dc1c6 | 245 | if (prod == LGS8GXX_PROD_LGS8913) { |
f15da16d DW |
246 | /* FEC auto detect */ |
247 | lgs8gxx_write_reg(priv, 0xC1, 0x03); | |
248 | ||
249 | lgs8gxx_read_reg(priv, 0x7C, &t); | |
250 | t = (t & 0x8C) | 0x03; | |
251 | lgs8gxx_write_reg(priv, 0x7C, t); | |
f15da16d | 252 | |
f15da16d DW |
253 | /* BER test mode */ |
254 | lgs8gxx_read_reg(priv, 0xC3, &t); | |
255 | t = (t & 0xEF) | 0x10; | |
256 | lgs8gxx_write_reg(priv, 0xC3, t); | |
257 | } | |
258 | ||
259 | if (priv->config->prod == LGS8GXX_PROD_LGS8G52) | |
260 | lgs8gxx_write_reg(priv, 0xD9, 0x40); | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | static int lgs8gxx_set_mode_manual(struct lgs8gxx_state *priv) | |
266 | { | |
f15da16d DW |
267 | u8 t; |
268 | ||
b80dc1c6 DW |
269 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
270 | u8 t2; | |
271 | lgs8gxx_read_reg(priv, 0x0C, &t); | |
272 | t &= (~0x80); | |
273 | lgs8gxx_write_reg(priv, 0x0C, t); | |
274 | ||
275 | lgs8gxx_read_reg(priv, 0x0C, &t); | |
276 | lgs8gxx_read_reg(priv, 0x19, &t2); | |
277 | ||
278 | if (((t&0x03) == 0x01) && (t2&0x01)) { | |
279 | lgs8gxx_write_reg(priv, 0x6E, 0x05); | |
280 | lgs8gxx_write_reg(priv, 0x39, 0x02); | |
281 | lgs8gxx_write_reg(priv, 0x39, 0x03); | |
282 | lgs8gxx_write_reg(priv, 0x3D, 0x05); | |
283 | lgs8gxx_write_reg(priv, 0x3E, 0x28); | |
284 | lgs8gxx_write_reg(priv, 0x53, 0x80); | |
285 | } else { | |
286 | lgs8gxx_write_reg(priv, 0x6E, 0x3F); | |
287 | lgs8gxx_write_reg(priv, 0x39, 0x00); | |
288 | lgs8gxx_write_reg(priv, 0x3D, 0x04); | |
289 | } | |
290 | ||
291 | lgs8gxx_soft_reset(priv); | |
292 | return 0; | |
293 | } | |
294 | ||
f15da16d DW |
295 | /* turn off auto-detect; manual settings */ |
296 | lgs8gxx_write_reg(priv, 0x7E, 0); | |
297 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) | |
298 | lgs8gxx_write_reg(priv, 0xC1, 0); | |
299 | ||
fdf07b02 | 300 | lgs8gxx_read_reg(priv, 0xC5, &t); |
f15da16d DW |
301 | t = (t & 0xE0) | 0x06; |
302 | lgs8gxx_write_reg(priv, 0xC5, t); | |
303 | ||
304 | lgs8gxx_soft_reset(priv); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | static int lgs8gxx_is_locked(struct lgs8gxx_state *priv, u8 *locked) | |
310 | { | |
311 | int ret = 0; | |
312 | u8 t; | |
313 | ||
b80dc1c6 DW |
314 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
315 | ret = lgs8gxx_read_reg(priv, 0x13, &t); | |
316 | else | |
317 | ret = lgs8gxx_read_reg(priv, 0x4B, &t); | |
f15da16d DW |
318 | if (ret != 0) |
319 | return ret; | |
320 | ||
b80dc1c6 DW |
321 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
322 | *locked = ((t & 0x80) == 0x80) ? 1 : 0; | |
323 | else | |
324 | *locked = ((t & 0xC0) == 0xC0) ? 1 : 0; | |
325 | return 0; | |
326 | } | |
327 | ||
328 | /* Wait for Code Acquisition Lock */ | |
329 | static int lgs8gxx_wait_ca_lock(struct lgs8gxx_state *priv, u8 *locked) | |
330 | { | |
331 | int ret = 0; | |
332 | u8 reg, mask, val; | |
333 | ||
334 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { | |
335 | reg = 0x13; | |
336 | mask = 0x80; | |
337 | val = 0x80; | |
338 | } else { | |
339 | reg = 0x4B; | |
340 | mask = 0xC0; | |
341 | val = 0xC0; | |
342 | } | |
343 | ||
344 | ret = wait_reg_mask(priv, reg, mask, val, 50, 40); | |
345 | *locked = (ret == 0) ? 1 : 0; | |
346 | ||
f15da16d DW |
347 | return 0; |
348 | } | |
349 | ||
350 | static int lgs8gxx_is_autodetect_finished(struct lgs8gxx_state *priv, | |
351 | u8 *finished) | |
352 | { | |
353 | int ret = 0; | |
b80dc1c6 | 354 | u8 reg, mask, val; |
f15da16d | 355 | |
b80dc1c6 DW |
356 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
357 | reg = 0x1f; | |
358 | mask = 0xC0; | |
359 | val = 0x80; | |
360 | } else { | |
361 | reg = 0xA4; | |
362 | mask = 0x03; | |
363 | val = 0x01; | |
364 | } | |
f15da16d | 365 | |
b80dc1c6 DW |
366 | ret = wait_reg_mask(priv, reg, mask, val, 10, 20); |
367 | *finished = (ret == 0) ? 1 : 0; | |
f15da16d DW |
368 | |
369 | return 0; | |
370 | } | |
371 | ||
b80dc1c6 DW |
372 | static int lgs8gxx_autolock_gi(struct lgs8gxx_state *priv, u8 gi, u8 cpn, |
373 | u8 *locked) | |
f15da16d | 374 | { |
b80dc1c6 | 375 | int err = 0; |
f15da16d | 376 | u8 ad_fini = 0; |
b80dc1c6 | 377 | u8 t1, t2; |
f15da16d DW |
378 | |
379 | if (gi == GI_945) | |
380 | dprintk("try GI 945\n"); | |
381 | else if (gi == GI_595) | |
382 | dprintk("try GI 595\n"); | |
383 | else if (gi == GI_420) | |
384 | dprintk("try GI 420\n"); | |
b80dc1c6 DW |
385 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
386 | lgs8gxx_read_reg(priv, 0x0C, &t1); | |
387 | lgs8gxx_read_reg(priv, 0x18, &t2); | |
388 | t1 &= ~(GI_MASK); | |
389 | t1 |= gi; | |
390 | t2 &= 0xFE; | |
391 | t2 |= cpn ? 0x01 : 0x00; | |
392 | lgs8gxx_write_reg(priv, 0x0C, t1); | |
393 | lgs8gxx_write_reg(priv, 0x18, t2); | |
394 | } else { | |
395 | lgs8gxx_write_reg(priv, 0x04, gi); | |
396 | } | |
f15da16d | 397 | lgs8gxx_soft_reset(priv); |
b80dc1c6 DW |
398 | err = lgs8gxx_wait_ca_lock(priv, locked); |
399 | if (err || !(*locked)) | |
400 | return err; | |
f15da16d DW |
401 | err = lgs8gxx_is_autodetect_finished(priv, &ad_fini); |
402 | if (err != 0) | |
403 | return err; | |
404 | if (ad_fini) { | |
b80dc1c6 DW |
405 | dprintk("auto detect finished\n"); |
406 | } else | |
407 | *locked = 0; | |
f15da16d DW |
408 | |
409 | return 0; | |
410 | } | |
411 | ||
412 | static int lgs8gxx_auto_detect(struct lgs8gxx_state *priv, | |
413 | u8 *detected_param, u8 *gi) | |
414 | { | |
415 | int i, j; | |
416 | int err = 0; | |
417 | u8 locked = 0, tmp_gi; | |
418 | ||
419 | dprintk("%s\n", __func__); | |
420 | ||
421 | lgs8gxx_set_mode_auto(priv); | |
b80dc1c6 DW |
422 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
423 | lgs8gxx_write_reg(priv, 0x67, 0xAA); | |
424 | lgs8gxx_write_reg(priv, 0x6E, 0x3F); | |
425 | } else { | |
426 | /* Guard Interval */ | |
427 | lgs8gxx_write_reg(priv, 0x03, 00); | |
428 | } | |
f15da16d DW |
429 | |
430 | for (i = 0; i < 2; i++) { | |
431 | for (j = 0; j < 2; j++) { | |
432 | tmp_gi = GI_945; | |
b80dc1c6 | 433 | err = lgs8gxx_autolock_gi(priv, GI_945, j, &locked); |
f15da16d DW |
434 | if (err) |
435 | goto out; | |
436 | if (locked) | |
437 | goto locked; | |
438 | } | |
439 | for (j = 0; j < 2; j++) { | |
440 | tmp_gi = GI_420; | |
b80dc1c6 | 441 | err = lgs8gxx_autolock_gi(priv, GI_420, j, &locked); |
f15da16d DW |
442 | if (err) |
443 | goto out; | |
444 | if (locked) | |
445 | goto locked; | |
446 | } | |
447 | tmp_gi = GI_595; | |
b80dc1c6 | 448 | err = lgs8gxx_autolock_gi(priv, GI_595, 1, &locked); |
f15da16d DW |
449 | if (err) |
450 | goto out; | |
451 | if (locked) | |
452 | goto locked; | |
453 | } | |
454 | ||
455 | locked: | |
456 | if ((err == 0) && (locked == 1)) { | |
457 | u8 t; | |
458 | ||
b80dc1c6 DW |
459 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75) { |
460 | lgs8gxx_read_reg(priv, 0xA2, &t); | |
461 | *detected_param = t; | |
462 | } else { | |
463 | lgs8gxx_read_reg(priv, 0x1F, &t); | |
464 | *detected_param = t & 0x3F; | |
465 | } | |
f15da16d DW |
466 | |
467 | if (tmp_gi == GI_945) | |
468 | dprintk("GI 945 locked\n"); | |
469 | else if (tmp_gi == GI_595) | |
470 | dprintk("GI 595 locked\n"); | |
471 | else if (tmp_gi == GI_420) | |
472 | dprintk("GI 420 locked\n"); | |
473 | *gi = tmp_gi; | |
474 | } | |
475 | if (!locked) | |
476 | err = -1; | |
477 | ||
478 | out: | |
479 | return err; | |
480 | } | |
481 | ||
482 | static void lgs8gxx_auto_lock(struct lgs8gxx_state *priv) | |
483 | { | |
484 | s8 err; | |
485 | u8 gi = 0x2; | |
486 | u8 detected_param = 0; | |
487 | ||
488 | err = lgs8gxx_auto_detect(priv, &detected_param, &gi); | |
489 | ||
490 | if (err != 0) { | |
491 | dprintk("lgs8gxx_auto_detect failed\n"); | |
b80dc1c6 DW |
492 | } else |
493 | dprintk("detected param = 0x%02X\n", detected_param); | |
f15da16d DW |
494 | |
495 | /* Apply detected parameters */ | |
496 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) { | |
497 | u8 inter_leave_len = detected_param & TIM_MASK ; | |
b80dc1c6 DW |
498 | /* Fix 8913 time interleaver detection bug */ |
499 | inter_leave_len = (inter_leave_len == TIM_MIDDLE) ? 0x60 : 0x40; | |
f15da16d DW |
500 | detected_param &= CF_MASK | SC_MASK | LGS_FEC_MASK; |
501 | detected_param |= inter_leave_len; | |
502 | } | |
b80dc1c6 DW |
503 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { |
504 | u8 t; | |
505 | lgs8gxx_read_reg(priv, 0x19, &t); | |
506 | t &= 0x81; | |
507 | t |= detected_param << 1; | |
508 | lgs8gxx_write_reg(priv, 0x19, t); | |
509 | } else { | |
510 | lgs8gxx_write_reg(priv, 0x7D, detected_param); | |
511 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) | |
512 | lgs8gxx_write_reg(priv, 0xC0, detected_param); | |
513 | } | |
f15da16d DW |
514 | /* lgs8gxx_soft_reset(priv); */ |
515 | ||
516 | /* Enter manual mode */ | |
517 | lgs8gxx_set_mode_manual(priv); | |
518 | ||
519 | switch (gi) { | |
520 | case GI_945: | |
521 | priv->curr_gi = 945; break; | |
522 | case GI_595: | |
523 | priv->curr_gi = 595; break; | |
524 | case GI_420: | |
525 | priv->curr_gi = 420; break; | |
526 | default: | |
527 | priv->curr_gi = 945; break; | |
528 | } | |
529 | } | |
530 | ||
531 | static int lgs8gxx_set_mpeg_mode(struct lgs8gxx_state *priv, | |
532 | u8 serial, u8 clk_pol, u8 clk_gated) | |
533 | { | |
534 | int ret = 0; | |
b80dc1c6 | 535 | u8 t, reg_addr; |
f15da16d | 536 | |
b80dc1c6 DW |
537 | reg_addr = (priv->config->prod == LGS8GXX_PROD_LGS8G75) ? 0x30 : 0xC2; |
538 | ret = lgs8gxx_read_reg(priv, reg_addr, &t); | |
f15da16d DW |
539 | if (ret != 0) |
540 | return ret; | |
541 | ||
542 | t &= 0xF8; | |
543 | t |= serial ? TS_SERIAL : TS_PARALLEL; | |
544 | t |= clk_pol ? TS_CLK_INVERTED : TS_CLK_NORMAL; | |
545 | t |= clk_gated ? TS_CLK_GATED : TS_CLK_FREERUN; | |
546 | ||
b80dc1c6 | 547 | ret = lgs8gxx_write_reg(priv, reg_addr, t); |
f15da16d DW |
548 | if (ret != 0) |
549 | return ret; | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
b80dc1c6 DW |
554 | /* A/D input peak-to-peak voltage range */ |
555 | static int lgs8g75_set_adc_vpp(struct lgs8gxx_state *priv, | |
556 | u8 sel) | |
557 | { | |
558 | u8 r26 = 0x73, r27 = 0x90; | |
559 | ||
560 | if (priv->config->prod != LGS8GXX_PROD_LGS8G75) | |
561 | return 0; | |
562 | ||
563 | r26 |= (sel & 0x01) << 7; | |
564 | r27 |= (sel & 0x02) >> 1; | |
565 | lgs8gxx_write_reg(priv, 0x26, r26); | |
566 | lgs8gxx_write_reg(priv, 0x27, r27); | |
567 | ||
568 | return 0; | |
569 | } | |
f15da16d DW |
570 | |
571 | /* LGS8913 demod frontend functions */ | |
572 | ||
573 | static int lgs8913_init(struct lgs8gxx_state *priv) | |
574 | { | |
575 | u8 t; | |
576 | ||
577 | /* LGS8913 specific */ | |
578 | lgs8gxx_write_reg(priv, 0xc1, 0x3); | |
579 | ||
580 | lgs8gxx_read_reg(priv, 0x7c, &t); | |
581 | lgs8gxx_write_reg(priv, 0x7c, (t&0x8c) | 0x3); | |
582 | ||
583 | /* LGS8913 specific */ | |
584 | lgs8gxx_read_reg(priv, 0xc3, &t); | |
585 | lgs8gxx_write_reg(priv, 0xc3, t&0x10); | |
586 | ||
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
b80dc1c6 DW |
591 | static int lgs8g75_init_data(struct lgs8gxx_state *priv) |
592 | { | |
7638699c BH |
593 | const struct firmware *fw; |
594 | int rc; | |
b80dc1c6 DW |
595 | int i; |
596 | ||
ccb7c593 | 597 | rc = request_firmware(&fw, LGS8GXX_FIRMWARE, &priv->i2c->dev); |
7638699c BH |
598 | if (rc) |
599 | return rc; | |
600 | ||
b80dc1c6 DW |
601 | lgs8gxx_write_reg(priv, 0xC6, 0x40); |
602 | ||
603 | lgs8gxx_write_reg(priv, 0x3D, 0x04); | |
604 | lgs8gxx_write_reg(priv, 0x39, 0x00); | |
605 | ||
606 | lgs8gxx_write_reg(priv, 0x3A, 0x00); | |
607 | lgs8gxx_write_reg(priv, 0x38, 0x00); | |
608 | lgs8gxx_write_reg(priv, 0x3B, 0x00); | |
609 | lgs8gxx_write_reg(priv, 0x38, 0x00); | |
610 | ||
7638699c | 611 | for (i = 0; i < fw->size; i++) { |
b80dc1c6 DW |
612 | lgs8gxx_write_reg(priv, 0x38, 0x00); |
613 | lgs8gxx_write_reg(priv, 0x3A, (u8)(i&0xff)); | |
614 | lgs8gxx_write_reg(priv, 0x3B, (u8)(i>>8)); | |
7638699c | 615 | lgs8gxx_write_reg(priv, 0x3C, fw->data[i]); |
b80dc1c6 DW |
616 | } |
617 | ||
618 | lgs8gxx_write_reg(priv, 0x38, 0x00); | |
619 | ||
7638699c | 620 | release_firmware(fw); |
b80dc1c6 DW |
621 | return 0; |
622 | } | |
623 | ||
f15da16d DW |
624 | static int lgs8gxx_init(struct dvb_frontend *fe) |
625 | { | |
626 | struct lgs8gxx_state *priv = | |
627 | (struct lgs8gxx_state *)fe->demodulator_priv; | |
628 | const struct lgs8gxx_config *config = priv->config; | |
629 | u8 data = 0; | |
630 | s8 err; | |
631 | dprintk("%s\n", __func__); | |
632 | ||
633 | lgs8gxx_read_reg(priv, 0, &data); | |
634 | dprintk("reg 0 = 0x%02X\n", data); | |
635 | ||
b80dc1c6 DW |
636 | if (config->prod == LGS8GXX_PROD_LGS8G75) |
637 | lgs8g75_set_adc_vpp(priv, config->adc_vpp); | |
638 | ||
f15da16d DW |
639 | /* Setup MPEG output format */ |
640 | err = lgs8gxx_set_mpeg_mode(priv, config->serial_ts, | |
641 | config->ts_clk_pol, | |
642 | config->ts_clk_gated); | |
643 | if (err != 0) | |
644 | return -EIO; | |
645 | ||
646 | if (config->prod == LGS8GXX_PROD_LGS8913) | |
647 | lgs8913_init(priv); | |
648 | lgs8gxx_set_if_freq(priv, priv->config->if_freq); | |
b80dc1c6 | 649 | lgs8gxx_set_ad_mode(priv); |
f15da16d DW |
650 | |
651 | return 0; | |
652 | } | |
653 | ||
654 | static void lgs8gxx_release(struct dvb_frontend *fe) | |
655 | { | |
656 | struct lgs8gxx_state *state = fe->demodulator_priv; | |
657 | dprintk("%s\n", __func__); | |
658 | ||
659 | kfree(state); | |
660 | } | |
661 | ||
662 | ||
2e4e98e7 | 663 | static int lgs8gxx_write(struct dvb_frontend *fe, const u8 buf[], int len) |
f15da16d DW |
664 | { |
665 | struct lgs8gxx_state *priv = fe->demodulator_priv; | |
666 | ||
667 | if (len != 2) | |
668 | return -EINVAL; | |
669 | ||
670 | return lgs8gxx_write_reg(priv, buf[0], buf[1]); | |
671 | } | |
672 | ||
fd91f267 | 673 | static int lgs8gxx_set_fe(struct dvb_frontend *fe) |
f15da16d | 674 | { |
fd91f267 | 675 | |
f15da16d DW |
676 | struct lgs8gxx_state *priv = fe->demodulator_priv; |
677 | ||
678 | dprintk("%s\n", __func__); | |
679 | ||
680 | /* set frequency */ | |
681 | if (fe->ops.tuner_ops.set_params) { | |
14d24d14 | 682 | fe->ops.tuner_ops.set_params(fe); |
f15da16d DW |
683 | if (fe->ops.i2c_gate_ctrl) |
684 | fe->ops.i2c_gate_ctrl(fe, 0); | |
685 | } | |
686 | ||
687 | /* start auto lock */ | |
688 | lgs8gxx_auto_lock(priv); | |
689 | ||
690 | msleep(10); | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
7c61d80a | 695 | static int lgs8gxx_get_fe(struct dvb_frontend *fe) |
f15da16d | 696 | { |
7c61d80a | 697 | struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache; |
f15da16d DW |
698 | dprintk("%s\n", __func__); |
699 | ||
700 | /* TODO: get real readings from device */ | |
701 | /* inversion status */ | |
702 | fe_params->inversion = INVERSION_OFF; | |
703 | ||
704 | /* bandwidth */ | |
fd91f267 | 705 | fe_params->bandwidth_hz = 8000000; |
f15da16d | 706 | |
fd91f267 MCC |
707 | fe_params->code_rate_HP = FEC_AUTO; |
708 | fe_params->code_rate_LP = FEC_AUTO; | |
f15da16d | 709 | |
fd91f267 | 710 | fe_params->modulation = QAM_AUTO; |
f15da16d DW |
711 | |
712 | /* transmission mode */ | |
fd91f267 | 713 | fe_params->transmission_mode = TRANSMISSION_MODE_AUTO; |
f15da16d DW |
714 | |
715 | /* guard interval */ | |
fd91f267 | 716 | fe_params->guard_interval = GUARD_INTERVAL_AUTO; |
f15da16d DW |
717 | |
718 | /* hierarchy */ | |
fd91f267 | 719 | fe_params->hierarchy = HIERARCHY_NONE; |
f15da16d DW |
720 | |
721 | return 0; | |
722 | } | |
723 | ||
724 | static | |
725 | int lgs8gxx_get_tune_settings(struct dvb_frontend *fe, | |
726 | struct dvb_frontend_tune_settings *fesettings) | |
727 | { | |
728 | /* FIXME: copy from tda1004x.c */ | |
729 | fesettings->min_delay_ms = 800; | |
730 | fesettings->step_size = 0; | |
731 | fesettings->max_drift = 0; | |
732 | return 0; | |
733 | } | |
734 | ||
0df289a2 MCC |
735 | static int lgs8gxx_read_status(struct dvb_frontend *fe, |
736 | enum fe_status *fe_status) | |
f15da16d DW |
737 | { |
738 | struct lgs8gxx_state *priv = fe->demodulator_priv; | |
739 | s8 ret; | |
b80dc1c6 | 740 | u8 t, locked = 0; |
f15da16d DW |
741 | |
742 | dprintk("%s\n", __func__); | |
b80dc1c6 DW |
743 | *fe_status = 0; |
744 | ||
745 | lgs8gxx_get_afc_phase(priv); | |
746 | lgs8gxx_is_locked(priv, &locked); | |
747 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { | |
748 | if (locked) | |
749 | *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
750 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
751 | return 0; | |
752 | } | |
f15da16d DW |
753 | |
754 | ret = lgs8gxx_read_reg(priv, 0x4B, &t); | |
755 | if (ret != 0) | |
756 | return -EIO; | |
757 | ||
758 | dprintk("Reg 0x4B: 0x%02X\n", t); | |
759 | ||
760 | *fe_status = 0; | |
761 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) { | |
762 | if ((t & 0x40) == 0x40) | |
763 | *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; | |
764 | if ((t & 0x80) == 0x80) | |
765 | *fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC | | |
766 | FE_HAS_LOCK; | |
767 | } else { | |
768 | if ((t & 0x80) == 0x80) | |
769 | *fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
770 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
771 | } | |
772 | ||
773 | /* success */ | |
774 | dprintk("%s: fe_status=0x%x\n", __func__, *fe_status); | |
775 | return 0; | |
776 | } | |
777 | ||
778 | static int lgs8gxx_read_signal_agc(struct lgs8gxx_state *priv, u16 *signal) | |
779 | { | |
780 | u16 v; | |
781 | u8 agc_lvl[2], cat; | |
782 | ||
783 | dprintk("%s()\n", __func__); | |
784 | lgs8gxx_read_reg(priv, 0x3F, &agc_lvl[0]); | |
785 | lgs8gxx_read_reg(priv, 0x3E, &agc_lvl[1]); | |
786 | ||
787 | v = agc_lvl[0]; | |
788 | v <<= 8; | |
789 | v |= agc_lvl[1]; | |
790 | ||
791 | dprintk("agc_lvl: 0x%04X\n", v); | |
792 | ||
793 | if (v < 0x100) | |
794 | cat = 0; | |
795 | else if (v < 0x190) | |
796 | cat = 5; | |
797 | else if (v < 0x2A8) | |
798 | cat = 4; | |
799 | else if (v < 0x381) | |
800 | cat = 3; | |
801 | else if (v < 0x400) | |
802 | cat = 2; | |
803 | else if (v == 0x400) | |
804 | cat = 1; | |
805 | else | |
806 | cat = 0; | |
807 | ||
6762d953 | 808 | *signal = cat * 65535 / 5; |
f15da16d DW |
809 | |
810 | return 0; | |
811 | } | |
812 | ||
813 | static int lgs8913_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal) | |
814 | { | |
815 | u8 t; s8 ret; | |
816 | s16 max_strength = 0; | |
817 | u8 str; | |
818 | u16 i, gi = priv->curr_gi; | |
819 | ||
820 | dprintk("%s\n", __func__); | |
821 | ||
822 | ret = lgs8gxx_read_reg(priv, 0x4B, &t); | |
823 | if (ret != 0) | |
824 | return -EIO; | |
825 | ||
826 | if (fake_signal_str) { | |
827 | if ((t & 0xC0) == 0xC0) { | |
6762d953 DW |
828 | dprintk("Fake signal strength\n"); |
829 | *signal = 0x7FFF; | |
f15da16d DW |
830 | } else |
831 | *signal = 0; | |
832 | return 0; | |
833 | } | |
834 | ||
835 | dprintk("gi = %d\n", gi); | |
836 | for (i = 0; i < gi; i++) { | |
837 | ||
838 | if ((i & 0xFF) == 0) | |
839 | lgs8gxx_write_reg(priv, 0x84, 0x03 & (i >> 8)); | |
840 | lgs8gxx_write_reg(priv, 0x83, i & 0xFF); | |
841 | ||
842 | lgs8gxx_read_reg(priv, 0x94, &str); | |
843 | if (max_strength < str) | |
844 | max_strength = str; | |
845 | } | |
846 | ||
847 | *signal = max_strength; | |
848 | dprintk("%s: signal=0x%02X\n", __func__, *signal); | |
849 | ||
850 | lgs8gxx_read_reg(priv, 0x95, &t); | |
851 | dprintk("%s: AVG Noise=0x%02X\n", __func__, t); | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
b80dc1c6 DW |
856 | static int lgs8g75_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal) |
857 | { | |
858 | u8 t; | |
859 | s16 v = 0; | |
860 | ||
861 | dprintk("%s\n", __func__); | |
862 | ||
863 | lgs8gxx_read_reg(priv, 0xB1, &t); | |
864 | v |= t; | |
865 | v <<= 8; | |
866 | lgs8gxx_read_reg(priv, 0xB0, &t); | |
867 | v |= t; | |
868 | ||
869 | *signal = v; | |
870 | dprintk("%s: signal=0x%02X\n", __func__, *signal); | |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
f15da16d DW |
875 | static int lgs8gxx_read_signal_strength(struct dvb_frontend *fe, u16 *signal) |
876 | { | |
877 | struct lgs8gxx_state *priv = fe->demodulator_priv; | |
878 | ||
879 | if (priv->config->prod == LGS8GXX_PROD_LGS8913) | |
880 | return lgs8913_read_signal_strength(priv, signal); | |
b80dc1c6 DW |
881 | else if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
882 | return lgs8g75_read_signal_strength(priv, signal); | |
f15da16d DW |
883 | else |
884 | return lgs8gxx_read_signal_agc(priv, signal); | |
885 | } | |
886 | ||
887 | static int lgs8gxx_read_snr(struct dvb_frontend *fe, u16 *snr) | |
888 | { | |
889 | struct lgs8gxx_state *priv = fe->demodulator_priv; | |
890 | u8 t; | |
891 | *snr = 0; | |
892 | ||
b80dc1c6 DW |
893 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) |
894 | lgs8gxx_read_reg(priv, 0x34, &t); | |
895 | else | |
896 | lgs8gxx_read_reg(priv, 0x95, &t); | |
f15da16d DW |
897 | dprintk("AVG Noise=0x%02X\n", t); |
898 | *snr = 256 - t; | |
899 | *snr <<= 8; | |
900 | dprintk("snr=0x%x\n", *snr); | |
901 | ||
902 | return 0; | |
903 | } | |
904 | ||
905 | static int lgs8gxx_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) | |
906 | { | |
907 | *ucblocks = 0; | |
908 | dprintk("%s: ucblocks=0x%x\n", __func__, *ucblocks); | |
909 | return 0; | |
910 | } | |
911 | ||
b80dc1c6 DW |
912 | static void packet_counter_start(struct lgs8gxx_state *priv) |
913 | { | |
914 | u8 orig, t; | |
915 | ||
916 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { | |
917 | lgs8gxx_read_reg(priv, 0x30, &orig); | |
918 | orig &= 0xE7; | |
919 | t = orig | 0x10; | |
920 | lgs8gxx_write_reg(priv, 0x30, t); | |
921 | t = orig | 0x18; | |
922 | lgs8gxx_write_reg(priv, 0x30, t); | |
923 | t = orig | 0x10; | |
924 | lgs8gxx_write_reg(priv, 0x30, t); | |
925 | } else { | |
926 | lgs8gxx_write_reg(priv, 0xC6, 0x01); | |
927 | lgs8gxx_write_reg(priv, 0xC6, 0x41); | |
928 | lgs8gxx_write_reg(priv, 0xC6, 0x01); | |
929 | } | |
930 | } | |
931 | ||
932 | static void packet_counter_stop(struct lgs8gxx_state *priv) | |
933 | { | |
934 | u8 t; | |
935 | ||
936 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { | |
937 | lgs8gxx_read_reg(priv, 0x30, &t); | |
938 | t &= 0xE7; | |
939 | lgs8gxx_write_reg(priv, 0x30, t); | |
940 | } else { | |
941 | lgs8gxx_write_reg(priv, 0xC6, 0x81); | |
942 | } | |
943 | } | |
944 | ||
f15da16d DW |
945 | static int lgs8gxx_read_ber(struct dvb_frontend *fe, u32 *ber) |
946 | { | |
947 | struct lgs8gxx_state *priv = fe->demodulator_priv; | |
b80dc1c6 DW |
948 | u8 reg_err, reg_total, t; |
949 | u32 total_cnt = 0, err_cnt = 0; | |
950 | int i; | |
f15da16d DW |
951 | |
952 | dprintk("%s\n", __func__); | |
953 | ||
b80dc1c6 | 954 | packet_counter_start(priv); |
f15da16d | 955 | msleep(200); |
b80dc1c6 DW |
956 | packet_counter_stop(priv); |
957 | ||
958 | if (priv->config->prod == LGS8GXX_PROD_LGS8G75) { | |
959 | reg_total = 0x28; reg_err = 0x2C; | |
960 | } else { | |
961 | reg_total = 0xD0; reg_err = 0xD4; | |
962 | } | |
f15da16d | 963 | |
b80dc1c6 DW |
964 | for (i = 0; i < 4; i++) { |
965 | total_cnt <<= 8; | |
966 | lgs8gxx_read_reg(priv, reg_total+3-i, &t); | |
967 | total_cnt |= t; | |
968 | } | |
969 | for (i = 0; i < 4; i++) { | |
970 | err_cnt <<= 8; | |
971 | lgs8gxx_read_reg(priv, reg_err+3-i, &t); | |
972 | err_cnt |= t; | |
973 | } | |
f15da16d DW |
974 | dprintk("error=%d total=%d\n", err_cnt, total_cnt); |
975 | ||
976 | if (total_cnt == 0) | |
977 | *ber = 0; | |
978 | else | |
979 | *ber = err_cnt * 100 / total_cnt; | |
980 | ||
981 | dprintk("%s: ber=0x%x\n", __func__, *ber); | |
982 | return 0; | |
983 | } | |
984 | ||
985 | static int lgs8gxx_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) | |
986 | { | |
987 | struct lgs8gxx_state *priv = fe->demodulator_priv; | |
988 | ||
989 | if (priv->config->tuner_address == 0) | |
990 | return 0; | |
991 | if (enable) { | |
992 | u8 v = 0x80 | priv->config->tuner_address; | |
993 | return lgs8gxx_write_reg(priv, 0x01, v); | |
994 | } | |
995 | return lgs8gxx_write_reg(priv, 0x01, 0); | |
996 | } | |
997 | ||
998 | static struct dvb_frontend_ops lgs8gxx_ops = { | |
224b6642 | 999 | .delsys = { SYS_DTMB }, |
f15da16d DW |
1000 | .info = { |
1001 | .name = "Legend Silicon LGS8913/LGS8GXX DMB-TH", | |
f15da16d DW |
1002 | .frequency_min = 474000000, |
1003 | .frequency_max = 858000000, | |
1004 | .frequency_stepsize = 10000, | |
1005 | .caps = | |
1006 | FE_CAN_FEC_AUTO | | |
1007 | FE_CAN_QAM_AUTO | | |
1008 | FE_CAN_TRANSMISSION_MODE_AUTO | | |
1009 | FE_CAN_GUARD_INTERVAL_AUTO | |
1010 | }, | |
1011 | ||
1012 | .release = lgs8gxx_release, | |
1013 | ||
1014 | .init = lgs8gxx_init, | |
1015 | .write = lgs8gxx_write, | |
1016 | .i2c_gate_ctrl = lgs8gxx_i2c_gate_ctrl, | |
1017 | ||
fd91f267 MCC |
1018 | .set_frontend = lgs8gxx_set_fe, |
1019 | .get_frontend = lgs8gxx_get_fe, | |
f15da16d DW |
1020 | .get_tune_settings = lgs8gxx_get_tune_settings, |
1021 | ||
1022 | .read_status = lgs8gxx_read_status, | |
1023 | .read_ber = lgs8gxx_read_ber, | |
1024 | .read_signal_strength = lgs8gxx_read_signal_strength, | |
1025 | .read_snr = lgs8gxx_read_snr, | |
1026 | .read_ucblocks = lgs8gxx_read_ucblocks, | |
1027 | }; | |
1028 | ||
1029 | struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, | |
1030 | struct i2c_adapter *i2c) | |
1031 | { | |
1032 | struct lgs8gxx_state *priv = NULL; | |
1033 | u8 data = 0; | |
1034 | ||
1035 | dprintk("%s()\n", __func__); | |
1036 | ||
1037 | if (config == NULL || i2c == NULL) | |
1038 | return NULL; | |
1039 | ||
1040 | priv = kzalloc(sizeof(struct lgs8gxx_state), GFP_KERNEL); | |
1041 | if (priv == NULL) | |
1042 | goto error_out; | |
1043 | ||
1044 | priv->config = config; | |
1045 | priv->i2c = i2c; | |
1046 | ||
1047 | /* check if the demod is there */ | |
1048 | if (lgs8gxx_read_reg(priv, 0, &data) != 0) { | |
1049 | dprintk("%s lgs8gxx not found at i2c addr 0x%02X\n", | |
1050 | __func__, priv->config->demod_address); | |
1051 | goto error_out; | |
1052 | } | |
1053 | ||
1054 | lgs8gxx_read_reg(priv, 1, &data); | |
1055 | ||
1056 | memcpy(&priv->frontend.ops, &lgs8gxx_ops, | |
1057 | sizeof(struct dvb_frontend_ops)); | |
1058 | priv->frontend.demodulator_priv = priv; | |
1059 | ||
b80dc1c6 DW |
1060 | if (config->prod == LGS8GXX_PROD_LGS8G75) |
1061 | lgs8g75_init_data(priv); | |
1062 | ||
f15da16d DW |
1063 | return &priv->frontend; |
1064 | ||
1065 | error_out: | |
1066 | dprintk("%s() error_out\n", __func__); | |
1067 | kfree(priv); | |
1068 | return NULL; | |
1069 | ||
1070 | } | |
1071 | EXPORT_SYMBOL(lgs8gxx_attach); | |
1072 | ||
1073 | MODULE_DESCRIPTION("Legend Silicon LGS8913/LGS8GXX DMB-TH demodulator driver"); | |
1074 | MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>"); | |
1075 | MODULE_LICENSE("GPL"); | |
ccb7c593 | 1076 | MODULE_FIRMWARE(LGS8GXX_FIRMWARE); |