]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/media/dvb/frontends/s5h1411.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
V4L/DVB (9309): s5h1411: I/F related bugfix for 3.25 and remove spurious define
[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb / frontends / s5h1411.c
CommitLineData
8b4f1d03
ST		 1/*
2 Samsung S5H1411 VSB/QAM demodulator driver
3
6d897616 4 Copyright (C) 2008 Steven Toth <stoth@linuxtv.org>
8b4f1d03
ST		 5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19
20*/
21
22#include <linux/kernel.h>
23#include <linux/init.h>
24#include <linux/module.h>
25#include <linux/string.h>
26#include <linux/slab.h>
27#include <linux/delay.h>
28#include "dvb_frontend.h"
8b4f1d03
ST		 29#include "s5h1411.h"
30
31struct s5h1411_state {
32
33 struct i2c_adapter *i2c;
34
35 /* configuration settings */
36 const struct s5h1411_config *config;
37
38 struct dvb_frontend frontend;
39
40 fe_modulation_t current_modulation;
41
42 u32 current_frequency;
43 int if_freq;
44
45 u8 inversion;
46};
47
48static int debug;
49
50#define dprintk(arg...) do { \
51 if (debug) \
52 printk(arg); \
53 } while (0)
54
55/* Register values to initialise the demod, defaults to VSB */
56static struct init_tab {
57 u8 addr;
58 u8 reg;
59 u16 data;
60} init_tab[] = {
61 { S5H1411_I2C_TOP_ADDR, 0x00, 0x0071, },
62 { S5H1411_I2C_TOP_ADDR, 0x08, 0x0047, },
63 { S5H1411_I2C_TOP_ADDR, 0x1c, 0x0400, },
64 { S5H1411_I2C_TOP_ADDR, 0x1e, 0x0370, },
f4ef033e 65 { S5H1411_I2C_TOP_ADDR, 0x1f, 0x342c, },
8b4f1d03
ST		 66 { S5H1411_I2C_TOP_ADDR, 0x24, 0x0231, },
67 { S5H1411_I2C_TOP_ADDR, 0x25, 0x1011, },
68 { S5H1411_I2C_TOP_ADDR, 0x26, 0x0f07, },
69 { S5H1411_I2C_TOP_ADDR, 0x27, 0x0f04, },
70 { S5H1411_I2C_TOP_ADDR, 0x28, 0x070f, },
71 { S5H1411_I2C_TOP_ADDR, 0x29, 0x2820, },
72 { S5H1411_I2C_TOP_ADDR, 0x2a, 0x102e, },
73 { S5H1411_I2C_TOP_ADDR, 0x2b, 0x0220, },
74 { S5H1411_I2C_TOP_ADDR, 0x2e, 0x0d0e, },
75 { S5H1411_I2C_TOP_ADDR, 0x2f, 0x1013, },
76 { S5H1411_I2C_TOP_ADDR, 0x31, 0x171b, },
77 { S5H1411_I2C_TOP_ADDR, 0x32, 0x0e0f, },
78 { S5H1411_I2C_TOP_ADDR, 0x33, 0x0f10, },
79 { S5H1411_I2C_TOP_ADDR, 0x34, 0x170e, },
80 { S5H1411_I2C_TOP_ADDR, 0x35, 0x4b10, },
81 { S5H1411_I2C_TOP_ADDR, 0x36, 0x0f17, },
82 { S5H1411_I2C_TOP_ADDR, 0x3c, 0x1577, },
83 { S5H1411_I2C_TOP_ADDR, 0x3d, 0x081a, },
84 { S5H1411_I2C_TOP_ADDR, 0x3e, 0x77ee, },
85 { S5H1411_I2C_TOP_ADDR, 0x40, 0x1e09, },
86 { S5H1411_I2C_TOP_ADDR, 0x41, 0x0f0c, },
87 { S5H1411_I2C_TOP_ADDR, 0x42, 0x1f10, },
88 { S5H1411_I2C_TOP_ADDR, 0x4d, 0x0509, },
89 { S5H1411_I2C_TOP_ADDR, 0x4e, 0x0a00, },
90 { S5H1411_I2C_TOP_ADDR, 0x50, 0x0000, },
91 { S5H1411_I2C_TOP_ADDR, 0x5b, 0x0000, },
92 { S5H1411_I2C_TOP_ADDR, 0x5c, 0x0008, },
93 { S5H1411_I2C_TOP_ADDR, 0x57, 0x1101, },
94 { S5H1411_I2C_TOP_ADDR, 0x65, 0x007c, },
95 { S5H1411_I2C_TOP_ADDR, 0x68, 0x0512, },
96 { S5H1411_I2C_TOP_ADDR, 0x69, 0x0258, },
97 { S5H1411_I2C_TOP_ADDR, 0x70, 0x0004, },
98 { S5H1411_I2C_TOP_ADDR, 0x71, 0x0007, },
99 { S5H1411_I2C_TOP_ADDR, 0x76, 0x00a9, },
100 { S5H1411_I2C_TOP_ADDR, 0x78, 0x3141, },
101 { S5H1411_I2C_TOP_ADDR, 0x7a, 0x3141, },
102 { S5H1411_I2C_TOP_ADDR, 0xb3, 0x8003, },
8b4f1d03
ST		 103 { S5H1411_I2C_TOP_ADDR, 0xb5, 0xa6bb, },
104 { S5H1411_I2C_TOP_ADDR, 0xb6, 0x0609, },
105 { S5H1411_I2C_TOP_ADDR, 0xb7, 0x2f06, },
106 { S5H1411_I2C_TOP_ADDR, 0xb8, 0x003f, },
107 { S5H1411_I2C_TOP_ADDR, 0xb9, 0x2700, },
108 { S5H1411_I2C_TOP_ADDR, 0xba, 0xfac8, },
109 { S5H1411_I2C_TOP_ADDR, 0xbe, 0x1003, },
110 { S5H1411_I2C_TOP_ADDR, 0xbf, 0x103f, },
111 { S5H1411_I2C_TOP_ADDR, 0xce, 0x2000, },
112 { S5H1411_I2C_TOP_ADDR, 0xcf, 0x0800, },
113 { S5H1411_I2C_TOP_ADDR, 0xd0, 0x0800, },
114 { S5H1411_I2C_TOP_ADDR, 0xd1, 0x0400, },
115 { S5H1411_I2C_TOP_ADDR, 0xd2, 0x0800, },
116 { S5H1411_I2C_TOP_ADDR, 0xd3, 0x2000, },
117 { S5H1411_I2C_TOP_ADDR, 0xd4, 0x3000, },
118 { S5H1411_I2C_TOP_ADDR, 0xdb, 0x4a9b, },
119 { S5H1411_I2C_TOP_ADDR, 0xdc, 0x1000, },
120 { S5H1411_I2C_TOP_ADDR, 0xde, 0x0001, },
121 { S5H1411_I2C_TOP_ADDR, 0xdf, 0x0000, },
122 { S5H1411_I2C_TOP_ADDR, 0xe3, 0x0301, },
123 { S5H1411_I2C_QAM_ADDR, 0xf3, 0x0000, },
124 { S5H1411_I2C_QAM_ADDR, 0xf3, 0x0001, },
125 { S5H1411_I2C_QAM_ADDR, 0x08, 0x0600, },
126 { S5H1411_I2C_QAM_ADDR, 0x18, 0x4201, },
127 { S5H1411_I2C_QAM_ADDR, 0x1e, 0x6476, },
128 { S5H1411_I2C_QAM_ADDR, 0x21, 0x0830, },
129 { S5H1411_I2C_QAM_ADDR, 0x0c, 0x5679, },
130 { S5H1411_I2C_QAM_ADDR, 0x0d, 0x579b, },
131 { S5H1411_I2C_QAM_ADDR, 0x24, 0x0102, },
132 { S5H1411_I2C_QAM_ADDR, 0x31, 0x7488, },
133 { S5H1411_I2C_QAM_ADDR, 0x32, 0x0a08, },
134 { S5H1411_I2C_QAM_ADDR, 0x3d, 0x8689, },
135 { S5H1411_I2C_QAM_ADDR, 0x49, 0x0048, },
136 { S5H1411_I2C_QAM_ADDR, 0x57, 0x2012, },
137 { S5H1411_I2C_QAM_ADDR, 0x5d, 0x7676, },
138 { S5H1411_I2C_QAM_ADDR, 0x04, 0x0400, },
139 { S5H1411_I2C_QAM_ADDR, 0x58, 0x00c0, },
140 { S5H1411_I2C_QAM_ADDR, 0x5b, 0x0100, },
141};
142
143/* VSB SNR lookup table */
144static struct vsb_snr_tab {
145 u16 val;
146 u16 data;
147} vsb_snr_tab[] = {
148 { 0x39f, 300, },
149 { 0x39b, 295, },
150 { 0x397, 290, },
151 { 0x394, 285, },
152 { 0x38f, 280, },
153 { 0x38b, 275, },
154 { 0x387, 270, },
155 { 0x382, 265, },
156 { 0x37d, 260, },
157 { 0x377, 255, },
158 { 0x370, 250, },
159 { 0x36a, 245, },
160 { 0x364, 240, },
161 { 0x35b, 235, },
162 { 0x353, 230, },
163 { 0x349, 225, },
164 { 0x340, 320, },
165 { 0x337, 215, },
166 { 0x327, 210, },
167 { 0x31b, 205, },
168 { 0x310, 200, },
169 { 0x302, 195, },
170 { 0x2f3, 190, },
171 { 0x2e4, 185, },
172 { 0x2d7, 180, },
173 { 0x2cd, 175, },
174 { 0x2bb, 170, },
175 { 0x2a9, 165, },
176 { 0x29e, 160, },
177 { 0x284, 155, },
178 { 0x27a, 150, },
179 { 0x260, 145, },
180 { 0x23a, 140, },
181 { 0x224, 135, },
182 { 0x213, 130, },
183 { 0x204, 125, },
184 { 0x1fe, 120, },
185 { 0, 0, },
186};
187
188/* QAM64 SNR lookup table */
189static struct qam64_snr_tab {
190 u16 val;
191 u16 data;
192} qam64_snr_tab[] = {
193 { 0x0001, 0, },
194 { 0x0af0, 300, },
195 { 0x0d80, 290, },
196 { 0x10a0, 280, },
197 { 0x14b5, 270, },
198 { 0x1590, 268, },
199 { 0x1680, 266, },
200 { 0x17b0, 264, },
201 { 0x18c0, 262, },
202 { 0x19b0, 260, },
203 { 0x1ad0, 258, },
204 { 0x1d00, 256, },
205 { 0x1da0, 254, },
206 { 0x1ef0, 252, },
207 { 0x2050, 250, },
208 { 0x20f0, 249, },
209 { 0x21d0, 248, },
210 { 0x22b0, 247, },
211 { 0x23a0, 246, },
212 { 0x2470, 245, },
213 { 0x24f0, 244, },
214 { 0x25a0, 243, },
215 { 0x26c0, 242, },
216 { 0x27b0, 241, },
217 { 0x28d0, 240, },
218 { 0x29b0, 239, },
219 { 0x2ad0, 238, },
220 { 0x2ba0, 237, },
221 { 0x2c80, 236, },
222 { 0x2d20, 235, },
223 { 0x2e00, 234, },
224 { 0x2f10, 233, },
225 { 0x3050, 232, },
226 { 0x3190, 231, },
227 { 0x3300, 230, },
228 { 0x3340, 229, },
229 { 0x3200, 228, },
230 { 0x3550, 227, },
231 { 0x3610, 226, },
232 { 0x3600, 225, },
233 { 0x3700, 224, },
234 { 0x3800, 223, },
235 { 0x3920, 222, },
236 { 0x3a20, 221, },
237 { 0x3b30, 220, },
238 { 0x3d00, 219, },
239 { 0x3e00, 218, },
240 { 0x4000, 217, },
241 { 0x4100, 216, },
242 { 0x4300, 215, },
243 { 0x4400, 214, },
244 { 0x4600, 213, },
245 { 0x4700, 212, },
246 { 0x4800, 211, },
247 { 0x4a00, 210, },
248 { 0x4b00, 209, },
249 { 0x4d00, 208, },
250 { 0x4f00, 207, },
251 { 0x5050, 206, },
252 { 0x5200, 205, },
253 { 0x53c0, 204, },
254 { 0x5450, 203, },
255 { 0x5650, 202, },
256 { 0x5820, 201, },
257 { 0x6000, 200, },
258 { 0xffff, 0, },
259};
260
261/* QAM256 SNR lookup table */
262static struct qam256_snr_tab {
263 u16 val;
264 u16 data;
265} qam256_snr_tab[] = {
266 { 0x0001, 0, },
267 { 0x0970, 400, },
268 { 0x0a90, 390, },
269 { 0x0b90, 380, },
270 { 0x0d90, 370, },
271 { 0x0ff0, 360, },
272 { 0x1240, 350, },
273 { 0x1345, 348, },
274 { 0x13c0, 346, },
275 { 0x14c0, 344, },
276 { 0x1500, 342, },
277 { 0x1610, 340, },
278 { 0x1700, 338, },
279 { 0x1800, 336, },
280 { 0x18b0, 334, },
281 { 0x1900, 332, },
282 { 0x1ab0, 330, },
283 { 0x1bc0, 328, },
284 { 0x1cb0, 326, },
285 { 0x1db0, 324, },
286 { 0x1eb0, 322, },
287 { 0x2030, 320, },
288 { 0x2200, 318, },
289 { 0x2280, 316, },
290 { 0x2410, 314, },
291 { 0x25b0, 312, },
292 { 0x27a0, 310, },
293 { 0x2840, 308, },
294 { 0x29d0, 306, },
295 { 0x2b10, 304, },
296 { 0x2d30, 302, },
297 { 0x2f20, 300, },
298 { 0x30c0, 298, },
299 { 0x3260, 297, },
300 { 0x32c0, 296, },
301 { 0x3300, 295, },
302 { 0x33b0, 294, },
303 { 0x34b0, 293, },
304 { 0x35a0, 292, },
305 { 0x3650, 291, },
306 { 0x3800, 290, },
307 { 0x3900, 289, },
308 { 0x3a50, 288, },
309 { 0x3b30, 287, },
310 { 0x3cb0, 286, },
311 { 0x3e20, 285, },
312 { 0x3fa0, 284, },
313 { 0x40a0, 283, },
314 { 0x41c0, 282, },
315 { 0x42f0, 281, },
316 { 0x44a0, 280, },
317 { 0x4600, 279, },
318 { 0x47b0, 278, },
319 { 0x4900, 277, },
320 { 0x4a00, 276, },
321 { 0x4ba0, 275, },
322 { 0x4d00, 274, },
323 { 0x4f00, 273, },
324 { 0x5000, 272, },
325 { 0x51f0, 272, },
326 { 0x53a0, 270, },
327 { 0x5520, 269, },
328 { 0x5700, 268, },
329 { 0x5800, 267, },
330 { 0x5a00, 266, },
331 { 0x5c00, 265, },
332 { 0x5d00, 264, },
333 { 0x5f00, 263, },
334 { 0x6000, 262, },
335 { 0x6200, 261, },
336 { 0x6400, 260, },
337 { 0xffff, 0, },
338};
339
340/* 8 bit registers, 16 bit values */
341static int s5h1411_writereg(struct s5h1411_state *state,
342 u8 addr, u8 reg, u16 data)
343{
344 int ret;
b431c616 345 u8 buf[] = { reg, data >> 8, data & 0xff };
8b4f1d03
ST		 346
347 struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = 3 };
348
349 ret = i2c_transfer(state->i2c, &msg, 1);
350
351 if (ret != 1)
352 printk(KERN_ERR "%s: writereg error 0x%02x 0x%02x 0x%04x, "
353 "ret == %i)\n", __func__, addr, reg, data, ret);
354
355 return (ret != 1) ? -1 : 0;
356}
357
358static u16 s5h1411_readreg(struct s5h1411_state *state, u8 addr, u8 reg)
359{
360 int ret;
b431c616
ST		 361 u8 b0[] = { reg };
362 u8 b1[] = { 0, 0 };
8b4f1d03 363
b431c616 364 struct i2c_msg msg[] = {
8b4f1d03
ST		 365 { .addr = addr, .flags = 0, .buf = b0, .len = 1 },
366 { .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 2 } };
367
368 ret = i2c_transfer(state->i2c, msg, 2);
369
370 if (ret != 2)
371 printk(KERN_ERR "%s: readreg error (ret == %i)\n",
372 __func__, ret);
373 return (b1[0] << 8) | b1[1];
374}
375
376static int s5h1411_softreset(struct dvb_frontend *fe)
377{
378 struct s5h1411_state *state = fe->demodulator_priv;
379
380 dprintk("%s()\n", __func__);
381
382 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf7, 0);
383 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf7, 1);
384 return 0;
385}
386
387static int s5h1411_set_if_freq(struct dvb_frontend *fe, int KHz)
388{
389 struct s5h1411_state *state = fe->demodulator_priv;
390
391 dprintk("%s(%d KHz)\n", __func__, KHz);
392
393 switch (KHz) {
394 case 3250:
c96de519 395 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x10d5);
8b4f1d03
ST		 396 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x5342);
397 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x10d9);
398 break;
399 case 3500:
400 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x1225);
401 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x1e96);
402 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x1225);
403 break;
404 case 4000:
405 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x14bc);
406 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0xb53e);
407 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x14bd);
408 break;
409 default:
410 dprintk("%s(%d KHz) Invalid, defaulting to 5380\n",
411 __func__, KHz);
412 /* no break, need to continue */
413 case 5380:
414 case 44000:
415 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x1be4);
416 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x3655);
417 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x1be4);
418 break;
419 }
420
421 state->if_freq = KHz;
422
423 return 0;
424}
425
426static int s5h1411_set_mpeg_timing(struct dvb_frontend *fe, int mode)
427{
428 struct s5h1411_state *state = fe->demodulator_priv;
429 u16 val;
430
431 dprintk("%s(%d)\n", __func__, mode);
432
433 val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xbe) & 0xcfff;
434 switch (mode) {
435 case S5H1411_MPEGTIMING_CONTINOUS_INVERTING_CLOCK:
436 val |= 0x0000;
437 break;
438 case S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK:
439 dprintk("%s(%d) Mode1 or Defaulting\n", __func__, mode);
440 val |= 0x1000;
441 break;
442 case S5H1411_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK:
443 val |= 0x2000;
444 break;
445 case S5H1411_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK:
446 val |= 0x3000;
447 break;
448 default:
449 return -EINVAL;
450 }
451
452 /* Configure MPEG Signal Timing charactistics */
453 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbe, val);
454}
455
456static int s5h1411_set_spectralinversion(struct dvb_frontend *fe, int inversion)
457{
458 struct s5h1411_state *state = fe->demodulator_priv;
459 u16 val;
460
461 dprintk("%s(%d)\n", __func__, inversion);
462 val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x24) & ~0x1000;
463
464 if (inversion == 1)
465 val |= 0x1000; /* Inverted */
466 else
467 val |= 0x0000;
468
469 state->inversion = inversion;
470 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x24, val);
471}
472
473static int s5h1411_enable_modulation(struct dvb_frontend *fe,
474 fe_modulation_t m)
475{
476 struct s5h1411_state *state = fe->demodulator_priv;
477
478 dprintk("%s(0x%08x)\n", __func__, m);
479
480 switch (m) {
481 case VSB_8:
482 dprintk("%s() VSB_8\n", __func__);
483 s5h1411_set_if_freq(fe, state->config->vsb_if);
484 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x00, 0x71);
485 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf6, 0x00);
486 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xcd, 0xf1);
487 break;
488 case QAM_64:
489 case QAM_256:
5ca947a9 490 case QAM_AUTO:
8b4f1d03
ST		 491 dprintk("%s() QAM_AUTO (64/256)\n", __func__);
492 s5h1411_set_if_freq(fe, state->config->qam_if);
493 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x00, 0x0171);
494 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf6, 0x0001);
495 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x16, 0x1101);
496 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xcd, 0x00f0);
497 break;
498 default:
499 dprintk("%s() Invalid modulation\n", __func__);
500 return -EINVAL;
501 }
502
503 state->current_modulation = m;
504 s5h1411_softreset(fe);
505
506 return 0;
507}
508
509static int s5h1411_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
510{
511 struct s5h1411_state *state = fe->demodulator_priv;
512
513 dprintk("%s(%d)\n", __func__, enable);
514
515 if (enable)
516 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf5, 1);
517 else
518 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf5, 0);
519}
520
521static int s5h1411_set_gpio(struct dvb_frontend *fe, int enable)
522{
523 struct s5h1411_state *state = fe->demodulator_priv;
524 u16 val;
525
526 dprintk("%s(%d)\n", __func__, enable);
527
528 val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xe0) & ~0x02;
529
530 if (enable)
531 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0,
532 val | 0x02);
533 else
534 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0, val);
535}
536
537static int s5h1411_sleep(struct dvb_frontend *fe, int enable)
538{
539 struct s5h1411_state *state = fe->demodulator_priv;
540
541 dprintk("%s(%d)\n", __func__, enable);
542
543 if (enable)
544 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf4, 1);
545 else {
546 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf4, 0);
547 s5h1411_softreset(fe);
548 }
549
550 return 0;
551}
552
553static int s5h1411_register_reset(struct dvb_frontend *fe)
554{
555 struct s5h1411_state *state = fe->demodulator_priv;
556
557 dprintk("%s()\n", __func__);
558
559 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf3, 0);
560}
561
562/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
563static int s5h1411_set_frontend(struct dvb_frontend *fe,
564 struct dvb_frontend_parameters *p)
565{
566 struct s5h1411_state *state = fe->demodulator_priv;
567
568 dprintk("%s(frequency=%d)\n", __func__, p->frequency);
569
570 s5h1411_softreset(fe);
571
572 state->current_frequency = p->frequency;
573
574 s5h1411_enable_modulation(fe, p->u.vsb.modulation);
575
576 /* Allow the demod to settle */
577 msleep(100);
578
579 if (fe->ops.tuner_ops.set_params) {
580 if (fe->ops.i2c_gate_ctrl)
581 fe->ops.i2c_gate_ctrl(fe, 1);
582
583 fe->ops.tuner_ops.set_params(fe, p);
584
585 if (fe->ops.i2c_gate_ctrl)
586 fe->ops.i2c_gate_ctrl(fe, 0);
587 }
588
589 return 0;
590}
591
592/* Reset the demod hardware and reset all of the configuration registers
593 to a default state. */
594static int s5h1411_init(struct dvb_frontend *fe)
595{
596 struct s5h1411_state *state = fe->demodulator_priv;
597 int i;
598
599 dprintk("%s()\n", __func__);
600
601 s5h1411_sleep(fe, 0);
602 s5h1411_register_reset(fe);
603
604 for (i = 0; i < ARRAY_SIZE(init_tab); i++)
605 s5h1411_writereg(state, init_tab[i].addr,
606 init_tab[i].reg,
607 init_tab[i].data);
608
609 /* The datasheet says that after initialisation, VSB is default */
610 state->current_modulation = VSB_8;
611
612 if (state->config->output_mode == S5H1411_SERIAL_OUTPUT)
613 /* Serial */
614 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1101);
615 else
616 /* Parallel */
617 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1001);
618
619 s5h1411_set_spectralinversion(fe, state->config->inversion);
620 s5h1411_set_if_freq(fe, state->config->vsb_if);
621 s5h1411_set_gpio(fe, state->config->gpio);
622 s5h1411_set_mpeg_timing(fe, state->config->mpeg_timing);
623 s5h1411_softreset(fe);
624
625 /* Note: Leaving the I2C gate closed. */
626 s5h1411_i2c_gate_ctrl(fe, 0);
627
628 return 0;
629}
630
631static int s5h1411_read_status(struct dvb_frontend *fe, fe_status_t *status)
632{
633 struct s5h1411_state *state = fe->demodulator_priv;
634 u16 reg;
635 u32 tuner_status = 0;
636
637 *status = 0;
638
639 /* Get the demodulator status */
640 reg = (s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2) >> 15)
641 & 0x0001;
642 if (reg)
643 *status |= FE_HAS_LOCK | FE_HAS_CARRIER | FE_HAS_SIGNAL;
644
645 switch (state->current_modulation) {
646 case QAM_64:
647 case QAM_256:
648 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf0);
649 if (reg & 0x100)
650 *status |= FE_HAS_VITERBI;
651 if (reg & 0x10)
652 *status |= FE_HAS_SYNC;
653 break;
654 case VSB_8:
655 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x5e);
656 if (reg & 0x0001)
657 *status |= FE_HAS_SYNC;
658 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2);
659 if (reg & 0x1000)
660 *status |= FE_HAS_VITERBI;
661 break;
662 default:
663 return -EINVAL;
664 }
665
666 switch (state->config->status_mode) {
667 case S5H1411_DEMODLOCKING:
668 if (*status & FE_HAS_VITERBI)
669 *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
670 break;
671 case S5H1411_TUNERLOCKING:
672 /* Get the tuner status */
673 if (fe->ops.tuner_ops.get_status) {
674 if (fe->ops.i2c_gate_ctrl)
675 fe->ops.i2c_gate_ctrl(fe, 1);
676
677 fe->ops.tuner_ops.get_status(fe, &tuner_status);
678
679 if (fe->ops.i2c_gate_ctrl)
680 fe->ops.i2c_gate_ctrl(fe, 0);
681 }
682 if (tuner_status)
683 *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
684 break;
685 }
686
687 dprintk("%s() status 0x%08x\n", __func__, *status);
688
689 return 0;
690}
691
692static int s5h1411_qam256_lookup_snr(struct dvb_frontend *fe, u16 *snr, u16 v)
693{
694 int i, ret = -EINVAL;
695 dprintk("%s()\n", __func__);
696
697 for (i = 0; i < ARRAY_SIZE(qam256_snr_tab); i++) {
698 if (v < qam256_snr_tab[i].val) {
699 *snr = qam256_snr_tab[i].data;
700 ret = 0;
701 break;
702 }
703 }
704 return ret;
705}
706
707static int s5h1411_qam64_lookup_snr(struct dvb_frontend *fe, u16 *snr, u16 v)
708{
709 int i, ret = -EINVAL;
710 dprintk("%s()\n", __func__);
711
712 for (i = 0; i < ARRAY_SIZE(qam64_snr_tab); i++) {
713 if (v < qam64_snr_tab[i].val) {
714 *snr = qam64_snr_tab[i].data;
715 ret = 0;
716 break;
717 }
718 }
719 return ret;
720}
721
722static int s5h1411_vsb_lookup_snr(struct dvb_frontend *fe, u16 *snr, u16 v)
723{
724 int i, ret = -EINVAL;
725 dprintk("%s()\n", __func__);
726
727 for (i = 0; i < ARRAY_SIZE(vsb_snr_tab); i++) {
728 if (v > vsb_snr_tab[i].val) {
729 *snr = vsb_snr_tab[i].data;
730 ret = 0;
731 break;
732 }
733 }
734 dprintk("%s() snr=%d\n", __func__, *snr);
735 return ret;
736}
737
738static int s5h1411_read_snr(struct dvb_frontend *fe, u16 *snr)
739{
740 struct s5h1411_state *state = fe->demodulator_priv;
741 u16 reg;
742 dprintk("%s()\n", __func__);
743
744 switch (state->current_modulation) {
745 case QAM_64:
746 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf1);
747 return s5h1411_qam64_lookup_snr(fe, snr, reg);
748 case QAM_256:
749 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf1);
750 return s5h1411_qam256_lookup_snr(fe, snr, reg);
751 case VSB_8:
752 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR,
753 0xf2) & 0x3ff;
754 return s5h1411_vsb_lookup_snr(fe, snr, reg);
755 default:
756 break;
757 }
758
759 return -EINVAL;
760}
761
762static int s5h1411_read_signal_strength(struct dvb_frontend *fe,
763 u16 *signal_strength)
764{
765 return s5h1411_read_snr(fe, signal_strength);
766}
767
768static int s5h1411_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
769{
770 struct s5h1411_state *state = fe->demodulator_priv;
771
772 *ucblocks = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xc9);
773
774 return 0;
775}
776
777static int s5h1411_read_ber(struct dvb_frontend *fe, u32 *ber)
778{
779 return s5h1411_read_ucblocks(fe, ber);
780}
781
782static int s5h1411_get_frontend(struct dvb_frontend *fe,
783 struct dvb_frontend_parameters *p)
784{
785 struct s5h1411_state *state = fe->demodulator_priv;
786
787 p->frequency = state->current_frequency;
788 p->u.vsb.modulation = state->current_modulation;
789
790 return 0;
791}
792
793static int s5h1411_get_tune_settings(struct dvb_frontend *fe,
794 struct dvb_frontend_tune_settings *tune)
795{
796 tune->min_delay_ms = 1000;
797 return 0;
798}
799
800static void s5h1411_release(struct dvb_frontend *fe)
801{
802 struct s5h1411_state *state = fe->demodulator_priv;
803 kfree(state);
804}
805
806static struct dvb_frontend_ops s5h1411_ops;
807
808struct dvb_frontend *s5h1411_attach(const struct s5h1411_config *config,
809 struct i2c_adapter *i2c)
810{
811 struct s5h1411_state *state = NULL;
812 u16 reg;
813
814 /* allocate memory for the internal state */
815 state = kmalloc(sizeof(struct s5h1411_state), GFP_KERNEL);
816 if (state == NULL)
817 goto error;
818
819 /* setup the state */
820 state->config = config;
821 state->i2c = i2c;
822 state->current_modulation = VSB_8;
823 state->inversion = state->config->inversion;
824
825 /* check if the demod exists */
826 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x05);
827 if (reg != 0x0066)
828 goto error;
829
830 /* create dvb_frontend */
831 memcpy(&state->frontend.ops, &s5h1411_ops,
832 sizeof(struct dvb_frontend_ops));
833
834 state->frontend.demodulator_priv = state;
835
836 if (s5h1411_init(&state->frontend) != 0) {
837 printk(KERN_ERR "%s: Failed to initialize correctly\n",
838 __func__);
839 goto error;
840 }
841
842 /* Note: Leaving the I2C gate open here. */
843 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf5, 1);
844
845 return &state->frontend;
846
847error:
848 kfree(state);
849 return NULL;
850}
851EXPORT_SYMBOL(s5h1411_attach);
852
853static struct dvb_frontend_ops s5h1411_ops = {
854
855 .info = {
856 .name = "Samsung S5H1411 QAM/8VSB Frontend",
857 .type = FE_ATSC,
858 .frequency_min = 54000000,
859 .frequency_max = 858000000,
860 .frequency_stepsize = 62500,
861 .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
862 },
863
864 .init = s5h1411_init,
865 .i2c_gate_ctrl = s5h1411_i2c_gate_ctrl,
866 .set_frontend = s5h1411_set_frontend,
867 .get_frontend = s5h1411_get_frontend,
868 .get_tune_settings = s5h1411_get_tune_settings,
869 .read_status = s5h1411_read_status,
870 .read_ber = s5h1411_read_ber,
871 .read_signal_strength = s5h1411_read_signal_strength,
872 .read_snr = s5h1411_read_snr,
873 .read_ucblocks = s5h1411_read_ucblocks,
874 .release = s5h1411_release,
875};
876
877module_param(debug, int, 0644);
878MODULE_PARM_DESC(debug, "Enable verbose debug messages");
879
880MODULE_DESCRIPTION("Samsung S5H1411 QAM-B/ATSC Demodulator driver");
881MODULE_AUTHOR("Steven Toth");
882MODULE_LICENSE("GPL");
883
884/*
885 * Local variables:
886 * c-basic-offset: 8
887 */
Ubuntu Artful kernel mirror