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path: root/drivers/media/dvb/frontends/s5h1411.c
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Diffstat (limited to 'drivers/media/dvb/frontends/s5h1411.c')
-rw-r--r--drivers/media/dvb/frontends/s5h1411.c888
1 files changed, 888 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/s5h1411.c b/drivers/media/dvb/frontends/s5h1411.c
new file mode 100644
index 000000000000..eb5bfc99d4e9
--- /dev/null
+++ b/drivers/media/dvb/frontends/s5h1411.c
@@ -0,0 +1,888 @@
1/*
2 Samsung S5H1411 VSB/QAM demodulator driver
3
4 Copyright (C) 2008 Steven Toth <stoth@hauppauge.com>
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"
29#include "dvb-pll.h"
30#include "s5h1411.h"
31
32struct s5h1411_state {
33
34 struct i2c_adapter *i2c;
35
36 /* configuration settings */
37 const struct s5h1411_config *config;
38
39 struct dvb_frontend frontend;
40
41 fe_modulation_t current_modulation;
42
43 u32 current_frequency;
44 int if_freq;
45
46 u8 inversion;
47};
48
49static int debug;
50
51#define dprintk(arg...) do { \
52 if (debug) \
53 printk(arg); \
54 } while (0)
55
56/* Register values to initialise the demod, defaults to VSB */
57static struct init_tab {
58 u8 addr;
59 u8 reg;
60 u16 data;
61} init_tab[] = {
62 { S5H1411_I2C_TOP_ADDR, 0x00, 0x0071, },
63 { S5H1411_I2C_TOP_ADDR, 0x08, 0x0047, },
64 { S5H1411_I2C_TOP_ADDR, 0x1c, 0x0400, },
65 { S5H1411_I2C_TOP_ADDR, 0x1e, 0x0370, },
66 { S5H1411_I2C_TOP_ADDR, 0x1f, 0x342a, },
67 { S5H1411_I2C_TOP_ADDR, 0x24, 0x0231, },
68 { S5H1411_I2C_TOP_ADDR, 0x25, 0x1011, },
69 { S5H1411_I2C_TOP_ADDR, 0x26, 0x0f07, },
70 { S5H1411_I2C_TOP_ADDR, 0x27, 0x0f04, },
71 { S5H1411_I2C_TOP_ADDR, 0x28, 0x070f, },
72 { S5H1411_I2C_TOP_ADDR, 0x29, 0x2820, },
73 { S5H1411_I2C_TOP_ADDR, 0x2a, 0x102e, },
74 { S5H1411_I2C_TOP_ADDR, 0x2b, 0x0220, },
75 { S5H1411_I2C_TOP_ADDR, 0x2e, 0x0d0e, },
76 { S5H1411_I2C_TOP_ADDR, 0x2f, 0x1013, },
77 { S5H1411_I2C_TOP_ADDR, 0x31, 0x171b, },
78 { S5H1411_I2C_TOP_ADDR, 0x32, 0x0e0f, },
79 { S5H1411_I2C_TOP_ADDR, 0x33, 0x0f10, },
80 { S5H1411_I2C_TOP_ADDR, 0x34, 0x170e, },
81 { S5H1411_I2C_TOP_ADDR, 0x35, 0x4b10, },
82 { S5H1411_I2C_TOP_ADDR, 0x36, 0x0f17, },
83 { S5H1411_I2C_TOP_ADDR, 0x3c, 0x1577, },
84 { S5H1411_I2C_TOP_ADDR, 0x3d, 0x081a, },
85 { S5H1411_I2C_TOP_ADDR, 0x3e, 0x77ee, },
86 { S5H1411_I2C_TOP_ADDR, 0x40, 0x1e09, },
87 { S5H1411_I2C_TOP_ADDR, 0x41, 0x0f0c, },
88 { S5H1411_I2C_TOP_ADDR, 0x42, 0x1f10, },
89 { S5H1411_I2C_TOP_ADDR, 0x4d, 0x0509, },
90 { S5H1411_I2C_TOP_ADDR, 0x4e, 0x0a00, },
91 { S5H1411_I2C_TOP_ADDR, 0x50, 0x0000, },
92 { S5H1411_I2C_TOP_ADDR, 0x5b, 0x0000, },
93 { S5H1411_I2C_TOP_ADDR, 0x5c, 0x0008, },
94 { S5H1411_I2C_TOP_ADDR, 0x57, 0x1101, },
95 { S5H1411_I2C_TOP_ADDR, 0x65, 0x007c, },
96 { S5H1411_I2C_TOP_ADDR, 0x68, 0x0512, },
97 { S5H1411_I2C_TOP_ADDR, 0x69, 0x0258, },
98 { S5H1411_I2C_TOP_ADDR, 0x70, 0x0004, },
99 { S5H1411_I2C_TOP_ADDR, 0x71, 0x0007, },
100 { S5H1411_I2C_TOP_ADDR, 0x76, 0x00a9, },
101 { S5H1411_I2C_TOP_ADDR, 0x78, 0x3141, },
102 { S5H1411_I2C_TOP_ADDR, 0x7a, 0x3141, },
103 { S5H1411_I2C_TOP_ADDR, 0xb3, 0x8003, },
104 { S5H1411_I2C_TOP_ADDR, 0xb5, 0xafbb, },
105 { S5H1411_I2C_TOP_ADDR, 0xb5, 0xa6bb, },
106 { S5H1411_I2C_TOP_ADDR, 0xb6, 0x0609, },
107 { S5H1411_I2C_TOP_ADDR, 0xb7, 0x2f06, },
108 { S5H1411_I2C_TOP_ADDR, 0xb8, 0x003f, },
109 { S5H1411_I2C_TOP_ADDR, 0xb9, 0x2700, },
110 { S5H1411_I2C_TOP_ADDR, 0xba, 0xfac8, },
111 { S5H1411_I2C_TOP_ADDR, 0xbe, 0x1003, },
112 { S5H1411_I2C_TOP_ADDR, 0xbf, 0x103f, },
113 { S5H1411_I2C_TOP_ADDR, 0xce, 0x2000, },
114 { S5H1411_I2C_TOP_ADDR, 0xcf, 0x0800, },
115 { S5H1411_I2C_TOP_ADDR, 0xd0, 0x0800, },
116 { S5H1411_I2C_TOP_ADDR, 0xd1, 0x0400, },
117 { S5H1411_I2C_TOP_ADDR, 0xd2, 0x0800, },
118 { S5H1411_I2C_TOP_ADDR, 0xd3, 0x2000, },
119 { S5H1411_I2C_TOP_ADDR, 0xd4, 0x3000, },
120 { S5H1411_I2C_TOP_ADDR, 0xdb, 0x4a9b, },
121 { S5H1411_I2C_TOP_ADDR, 0xdc, 0x1000, },
122 { S5H1411_I2C_TOP_ADDR, 0xde, 0x0001, },
123 { S5H1411_I2C_TOP_ADDR, 0xdf, 0x0000, },
124 { S5H1411_I2C_TOP_ADDR, 0xe3, 0x0301, },
125 { S5H1411_I2C_QAM_ADDR, 0xf3, 0x0000, },
126 { S5H1411_I2C_QAM_ADDR, 0xf3, 0x0001, },
127 { S5H1411_I2C_QAM_ADDR, 0x08, 0x0600, },
128 { S5H1411_I2C_QAM_ADDR, 0x18, 0x4201, },
129 { S5H1411_I2C_QAM_ADDR, 0x1e, 0x6476, },
130 { S5H1411_I2C_QAM_ADDR, 0x21, 0x0830, },
131 { S5H1411_I2C_QAM_ADDR, 0x0c, 0x5679, },
132 { S5H1411_I2C_QAM_ADDR, 0x0d, 0x579b, },
133 { S5H1411_I2C_QAM_ADDR, 0x24, 0x0102, },
134 { S5H1411_I2C_QAM_ADDR, 0x31, 0x7488, },
135 { S5H1411_I2C_QAM_ADDR, 0x32, 0x0a08, },
136 { S5H1411_I2C_QAM_ADDR, 0x3d, 0x8689, },
137 { S5H1411_I2C_QAM_ADDR, 0x49, 0x0048, },
138 { S5H1411_I2C_QAM_ADDR, 0x57, 0x2012, },
139 { S5H1411_I2C_QAM_ADDR, 0x5d, 0x7676, },
140 { S5H1411_I2C_QAM_ADDR, 0x04, 0x0400, },
141 { S5H1411_I2C_QAM_ADDR, 0x58, 0x00c0, },
142 { S5H1411_I2C_QAM_ADDR, 0x5b, 0x0100, },
143};
144
145/* VSB SNR lookup table */
146static struct vsb_snr_tab {
147 u16 val;
148 u16 data;
149} vsb_snr_tab[] = {
150 { 0x39f, 300, },
151 { 0x39b, 295, },
152 { 0x397, 290, },
153 { 0x394, 285, },
154 { 0x38f, 280, },
155 { 0x38b, 275, },
156 { 0x387, 270, },
157 { 0x382, 265, },
158 { 0x37d, 260, },
159 { 0x377, 255, },
160 { 0x370, 250, },
161 { 0x36a, 245, },
162 { 0x364, 240, },
163 { 0x35b, 235, },
164 { 0x353, 230, },
165 { 0x349, 225, },
166 { 0x340, 320, },
167 { 0x337, 215, },
168 { 0x327, 210, },
169 { 0x31b, 205, },
170 { 0x310, 200, },
171 { 0x302, 195, },
172 { 0x2f3, 190, },
173 { 0x2e4, 185, },
174 { 0x2d7, 180, },
175 { 0x2cd, 175, },
176 { 0x2bb, 170, },
177 { 0x2a9, 165, },
178 { 0x29e, 160, },
179 { 0x284, 155, },
180 { 0x27a, 150, },
181 { 0x260, 145, },
182 { 0x23a, 140, },
183 { 0x224, 135, },
184 { 0x213, 130, },
185 { 0x204, 125, },
186 { 0x1fe, 120, },
187 { 0, 0, },
188};
189
190/* QAM64 SNR lookup table */
191static struct qam64_snr_tab {
192 u16 val;
193 u16 data;
194} qam64_snr_tab[] = {
195 { 0x0001, 0, },
196 { 0x0af0, 300, },
197 { 0x0d80, 290, },
198 { 0x10a0, 280, },
199 { 0x14b5, 270, },
200 { 0x1590, 268, },
201 { 0x1680, 266, },
202 { 0x17b0, 264, },
203 { 0x18c0, 262, },
204 { 0x19b0, 260, },
205 { 0x1ad0, 258, },
206 { 0x1d00, 256, },
207 { 0x1da0, 254, },
208 { 0x1ef0, 252, },
209 { 0x2050, 250, },
210 { 0x20f0, 249, },
211 { 0x21d0, 248, },
212 { 0x22b0, 247, },
213 { 0x23a0, 246, },
214 { 0x2470, 245, },
215 { 0x24f0, 244, },
216 { 0x25a0, 243, },
217 { 0x26c0, 242, },
218 { 0x27b0, 241, },
219 { 0x28d0, 240, },
220 { 0x29b0, 239, },
221 { 0x2ad0, 238, },
222 { 0x2ba0, 237, },
223 { 0x2c80, 236, },
224 { 0x2d20, 235, },
225 { 0x2e00, 234, },
226 { 0x2f10, 233, },
227 { 0x3050, 232, },
228 { 0x3190, 231, },
229 { 0x3300, 230, },
230 { 0x3340, 229, },
231 { 0x3200, 228, },
232 { 0x3550, 227, },
233 { 0x3610, 226, },
234 { 0x3600, 225, },
235 { 0x3700, 224, },
236 { 0x3800, 223, },
237 { 0x3920, 222, },
238 { 0x3a20, 221, },
239 { 0x3b30, 220, },
240 { 0x3d00, 219, },
241 { 0x3e00, 218, },
242 { 0x4000, 217, },
243 { 0x4100, 216, },
244 { 0x4300, 215, },
245 { 0x4400, 214, },
246 { 0x4600, 213, },
247 { 0x4700, 212, },
248 { 0x4800, 211, },
249 { 0x4a00, 210, },
250 { 0x4b00, 209, },
251 { 0x4d00, 208, },
252 { 0x4f00, 207, },
253 { 0x5050, 206, },
254 { 0x5200, 205, },
255 { 0x53c0, 204, },
256 { 0x5450, 203, },
257 { 0x5650, 202, },
258 { 0x5820, 201, },
259 { 0x6000, 200, },
260 { 0xffff, 0, },
261};
262
263/* QAM256 SNR lookup table */
264static struct qam256_snr_tab {
265 u16 val;
266 u16 data;
267} qam256_snr_tab[] = {
268 { 0x0001, 0, },
269 { 0x0970, 400, },
270 { 0x0a90, 390, },
271 { 0x0b90, 380, },
272 { 0x0d90, 370, },
273 { 0x0ff0, 360, },
274 { 0x1240, 350, },
275 { 0x1345, 348, },
276 { 0x13c0, 346, },
277 { 0x14c0, 344, },
278 { 0x1500, 342, },
279 { 0x1610, 340, },
280 { 0x1700, 338, },
281 { 0x1800, 336, },
282 { 0x18b0, 334, },
283 { 0x1900, 332, },
284 { 0x1ab0, 330, },
285 { 0x1bc0, 328, },
286 { 0x1cb0, 326, },
287 { 0x1db0, 324, },
288 { 0x1eb0, 322, },
289 { 0x2030, 320, },
290 { 0x2200, 318, },
291 { 0x2280, 316, },
292 { 0x2410, 314, },
293 { 0x25b0, 312, },
294 { 0x27a0, 310, },
295 { 0x2840, 308, },
296 { 0x29d0, 306, },
297 { 0x2b10, 304, },
298 { 0x2d30, 302, },
299 { 0x2f20, 300, },
300 { 0x30c0, 298, },
301 { 0x3260, 297, },
302 { 0x32c0, 296, },
303 { 0x3300, 295, },
304 { 0x33b0, 294, },
305 { 0x34b0, 293, },
306 { 0x35a0, 292, },
307 { 0x3650, 291, },
308 { 0x3800, 290, },
309 { 0x3900, 289, },
310 { 0x3a50, 288, },
311 { 0x3b30, 287, },
312 { 0x3cb0, 286, },
313 { 0x3e20, 285, },
314 { 0x3fa0, 284, },
315 { 0x40a0, 283, },
316 { 0x41c0, 282, },
317 { 0x42f0, 281, },
318 { 0x44a0, 280, },
319 { 0x4600, 279, },
320 { 0x47b0, 278, },
321 { 0x4900, 277, },
322 { 0x4a00, 276, },
323 { 0x4ba0, 275, },
324 { 0x4d00, 274, },
325 { 0x4f00, 273, },
326 { 0x5000, 272, },
327 { 0x51f0, 272, },
328 { 0x53a0, 270, },
329 { 0x5520, 269, },
330 { 0x5700, 268, },
331 { 0x5800, 267, },
332 { 0x5a00, 266, },
333 { 0x5c00, 265, },
334 { 0x5d00, 264, },
335 { 0x5f00, 263, },
336 { 0x6000, 262, },
337 { 0x6200, 261, },
338 { 0x6400, 260, },
339 { 0xffff, 0, },
340};
341
342/* 8 bit registers, 16 bit values */
343static int s5h1411_writereg(struct s5h1411_state *state,
344 u8 addr, u8 reg, u16 data)
345{
346 int ret;
347 u8 buf [] = { reg, data >> 8, data & 0xff };
348
349 struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = 3 };
350
351 ret = i2c_transfer(state->i2c, &msg, 1);
352
353 if (ret != 1)
354 printk(KERN_ERR "%s: writereg error 0x%02x 0x%02x 0x%04x, "
355 "ret == %i)\n", __func__, addr, reg, data, ret);
356
357 return (ret != 1) ? -1 : 0;
358}
359
360static u16 s5h1411_readreg(struct s5h1411_state *state, u8 addr, u8 reg)
361{
362 int ret;
363 u8 b0 [] = { reg };
364 u8 b1 [] = { 0, 0 };
365
366 struct i2c_msg msg [] = {
367 { .addr = addr, .flags = 0, .buf = b0, .len = 1 },
368 { .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 2 } };
369
370 ret = i2c_transfer(state->i2c, msg, 2);
371
372 if (ret != 2)
373 printk(KERN_ERR "%s: readreg error (ret == %i)\n",
374 __func__, ret);
375 return (b1[0] << 8) | b1[1];
376}
377
378static int s5h1411_softreset(struct dvb_frontend *fe)
379{
380 struct s5h1411_state *state = fe->demodulator_priv;
381
382 dprintk("%s()\n", __func__);
383
384 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf7, 0);
385 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf7, 1);
386 return 0;
387}
388
389static int s5h1411_set_if_freq(struct dvb_frontend *fe, int KHz)
390{
391 struct s5h1411_state *state = fe->demodulator_priv;
392
393 dprintk("%s(%d KHz)\n", __func__, KHz);
394
395 switch (KHz) {
396 case 3250:
397 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x10d9);
398 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x5342);
399 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x10d9);
400 break;
401 case 3500:
402 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x1225);
403 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x1e96);
404 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x1225);
405 break;
406 case 4000:
407 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x14bc);
408 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0xb53e);
409 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x14bd);
410 break;
411 default:
412 dprintk("%s(%d KHz) Invalid, defaulting to 5380\n",
413 __func__, KHz);
414 /* no break, need to continue */
415 case 5380:
416 case 44000:
417 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x1be4);
418 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x3655);
419 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x1be4);
420 break;
421 }
422
423 state->if_freq = KHz;
424
425 return 0;
426}
427
428static int s5h1411_set_mpeg_timing(struct dvb_frontend *fe, int mode)
429{
430 struct s5h1411_state *state = fe->demodulator_priv;
431 u16 val;
432
433 dprintk("%s(%d)\n", __func__, mode);
434
435 val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xbe) & 0xcfff;
436 switch (mode) {
437 case S5H1411_MPEGTIMING_CONTINOUS_INVERTING_CLOCK:
438 val |= 0x0000;
439 break;
440 case S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK:
441 dprintk("%s(%d) Mode1 or Defaulting\n", __func__, mode);
442 val |= 0x1000;
443 break;
444 case S5H1411_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK:
445 val |= 0x2000;
446 break;
447 case S5H1411_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK:
448 val |= 0x3000;
449 break;
450 default:
451 return -EINVAL;
452 }
453
454 /* Configure MPEG Signal Timing charactistics */
455 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbe, val);
456}
457
458static int s5h1411_set_spectralinversion(struct dvb_frontend *fe, int inversion)
459{
460 struct s5h1411_state *state = fe->demodulator_priv;
461 u16 val;
462
463 dprintk("%s(%d)\n", __func__, inversion);
464 val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x24) & ~0x1000;
465
466 if (inversion == 1)
467 val |= 0x1000; /* Inverted */
468 else
469 val |= 0x0000;
470
471 state->inversion = inversion;
472 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x24, val);
473}
474
475static int s5h1411_enable_modulation(struct dvb_frontend *fe,
476 fe_modulation_t m)
477{
478 struct s5h1411_state *state = fe->demodulator_priv;
479
480 dprintk("%s(0x%08x)\n", __func__, m);
481
482 switch (m) {
483 case VSB_8:
484 dprintk("%s() VSB_8\n", __func__);
485 s5h1411_set_if_freq(fe, state->config->vsb_if);
486 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x00, 0x71);
487 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf6, 0x00);
488 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xcd, 0xf1);
489 break;
490 case QAM_64:
491 case QAM_256:
492 dprintk("%s() QAM_AUTO (64/256)\n", __func__);
493 s5h1411_set_if_freq(fe, state->config->qam_if);
494 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x00, 0x0171);
495 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf6, 0x0001);
496 s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x16, 0x1101);
497 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xcd, 0x00f0);
498 break;
499 default:
500 dprintk("%s() Invalid modulation\n", __func__);
501 return -EINVAL;
502 }
503
504 state->current_modulation = m;
505 s5h1411_softreset(fe);
506
507 return 0;
508}
509
510static int s5h1411_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
511{
512 struct s5h1411_state *state = fe->demodulator_priv;
513
514 dprintk("%s(%d)\n", __func__, enable);
515
516 if (enable)
517 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf5, 1);
518 else
519 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf5, 0);
520}
521
522static int s5h1411_set_gpio(struct dvb_frontend *fe, int enable)
523{
524 struct s5h1411_state *state = fe->demodulator_priv;
525 u16 val;
526
527 dprintk("%s(%d)\n", __func__, enable);
528
529 val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xe0) & ~0x02;
530
531 if (enable)
532 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0,
533 val | 0x02);
534 else
535 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0, val);
536}
537
538static int s5h1411_sleep(struct dvb_frontend *fe, int enable)
539{
540 struct s5h1411_state *state = fe->demodulator_priv;
541
542 dprintk("%s(%d)\n", __func__, enable);
543
544 if (enable)
545 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf4, 1);
546 else {
547 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf4, 0);
548 s5h1411_softreset(fe);
549 }
550
551 return 0;
552}
553
554static int s5h1411_register_reset(struct dvb_frontend *fe)
555{
556 struct s5h1411_state *state = fe->demodulator_priv;
557
558 dprintk("%s()\n", __func__);
559
560 return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf3, 0);
561}
562
563/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
564static int s5h1411_set_frontend(struct dvb_frontend *fe,
565 struct dvb_frontend_parameters *p)
566{
567 struct s5h1411_state *state = fe->demodulator_priv;
568
569 dprintk("%s(frequency=%d)\n", __func__, p->frequency);
570
571 s5h1411_softreset(fe);
572
573 state->current_frequency = p->frequency;
574
575 s5h1411_enable_modulation(fe, p->u.vsb.modulation);
576
577 /* Allow the demod to settle */
578 msleep(100);
579
580 if (fe->ops.tuner_ops.set_params) {
581 if (fe->ops.i2c_gate_ctrl)
582 fe->ops.i2c_gate_ctrl(fe, 1);
583
584 fe->ops.tuner_ops.set_params(fe, p);
585
586 if (fe->ops.i2c_gate_ctrl)
587 fe->ops.i2c_gate_ctrl(fe, 0);
588 }
589
590 return 0;
591}
592
593/* Reset the demod hardware and reset all of the configuration registers
594 to a default state. */
595static int s5h1411_init(struct dvb_frontend *fe)
596{
597 struct s5h1411_state *state = fe->demodulator_priv;
598 int i;
599
600 dprintk("%s()\n", __func__);
601
602 s5h1411_sleep(fe, 0);
603 s5h1411_register_reset(fe);
604
605 for (i = 0; i < ARRAY_SIZE(init_tab); i++)
606 s5h1411_writereg(state, init_tab[i].addr,
607 init_tab[i].reg,
608 init_tab[i].data);
609
610 /* The datasheet says that after initialisation, VSB is default */
611 state->current_modulation = VSB_8;
612
613 if (state->config->output_mode == S5H1411_SERIAL_OUTPUT)
614 /* Serial */
615 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1101);
616 else
617 /* Parallel */
618 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1001);
619
620 s5h1411_set_spectralinversion(fe, state->config->inversion);
621 s5h1411_set_if_freq(fe, state->config->vsb_if);
622 s5h1411_set_gpio(fe, state->config->gpio);
623 s5h1411_set_mpeg_timing(fe, state->config->mpeg_timing);
624 s5h1411_softreset(fe);
625
626 /* Note: Leaving the I2C gate closed. */
627 s5h1411_i2c_gate_ctrl(fe, 0);
628
629 return 0;
630}
631
632static int s5h1411_read_status(struct dvb_frontend *fe, fe_status_t *status)
633{
634 struct s5h1411_state *state = fe->demodulator_priv;
635 u16 reg;
636 u32 tuner_status = 0;
637
638 *status = 0;
639
640 /* Get the demodulator status */
641 reg = (s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2) >> 15)
642 & 0x0001;
643 if (reg)
644 *status |= FE_HAS_LOCK | FE_HAS_CARRIER | FE_HAS_SIGNAL;
645
646 switch (state->current_modulation) {
647 case QAM_64:
648 case QAM_256:
649 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf0);
650 if (reg & 0x100)
651 *status |= FE_HAS_VITERBI;
652 if (reg & 0x10)
653 *status |= FE_HAS_SYNC;
654 break;
655 case VSB_8:
656 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x5e);
657 if (reg & 0x0001)
658 *status |= FE_HAS_SYNC;
659 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2);
660 if (reg & 0x1000)
661 *status |= FE_HAS_VITERBI;
662 break;
663 default:
664 return -EINVAL;
665 }
666
667 switch (state->config->status_mode) {
668 case S5H1411_DEMODLOCKING:
669 if (*status & FE_HAS_VITERBI)
670 *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
671 break;
672 case S5H1411_TUNERLOCKING:
673 /* Get the tuner status */
674 if (fe->ops.tuner_ops.get_status) {
675 if (fe->ops.i2c_gate_ctrl)
676 fe->ops.i2c_gate_ctrl(fe, 1);
677
678 fe->ops.tuner_ops.get_status(fe, &tuner_status);
679
680 if (fe->ops.i2c_gate_ctrl)
681 fe->ops.i2c_gate_ctrl(fe, 0);
682 }
683 if (tuner_status)
684 *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
685 break;
686 }
687
688 dprintk("%s() status 0x%08x\n", __func__, *status);
689
690 return 0;
691}
692
693static int s5h1411_qam256_lookup_snr(struct dvb_frontend *fe, u16 *snr, u16 v)
694{
695 int i, ret = -EINVAL;
696 dprintk("%s()\n", __func__);
697
698 for (i = 0; i < ARRAY_SIZE(qam256_snr_tab); i++) {
699 if (v < qam256_snr_tab[i].val) {
700 *snr = qam256_snr_tab[i].data;
701 ret = 0;
702 break;
703 }
704 }
705 return ret;
706}
707
708static int s5h1411_qam64_lookup_snr(struct dvb_frontend *fe, u16 *snr, u16 v)
709{
710 int i, ret = -EINVAL;
711 dprintk("%s()\n", __func__);
712
713 for (i = 0; i < ARRAY_SIZE(qam64_snr_tab); i++) {
714 if (v < qam64_snr_tab[i].val) {
715 *snr = qam64_snr_tab[i].data;
716 ret = 0;
717 break;
718 }
719 }
720 return ret;
721}
722
723static int s5h1411_vsb_lookup_snr(struct dvb_frontend *fe, u16 *snr, u16 v)
724{
725 int i, ret = -EINVAL;
726 dprintk("%s()\n", __func__);
727
728 for (i = 0; i < ARRAY_SIZE(vsb_snr_tab); i++) {
729 if (v > vsb_snr_tab[i].val) {
730 *snr = vsb_snr_tab[i].data;
731 ret = 0;
732 break;
733 }
734 }
735 dprintk("%s() snr=%d\n", __func__, *snr);
736 return ret;
737}
738
739static int s5h1411_read_snr(struct dvb_frontend *fe, u16 *snr)
740{
741 struct s5h1411_state *state = fe->demodulator_priv;
742 u16 reg;
743 dprintk("%s()\n", __func__);
744
745 switch (state->current_modulation) {
746 case QAM_64:
747 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf1);
748 return s5h1411_qam64_lookup_snr(fe, snr, reg);
749 case QAM_256:
750 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf1);
751 return s5h1411_qam256_lookup_snr(fe, snr, reg);
752 case VSB_8:
753 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR,
754 0xf2) & 0x3ff;
755 return s5h1411_vsb_lookup_snr(fe, snr, reg);
756 default:
757 break;
758 }
759
760 return -EINVAL;
761}
762
763static int s5h1411_read_signal_strength(struct dvb_frontend *fe,
764 u16 *signal_strength)
765{
766 return s5h1411_read_snr(fe, signal_strength);
767}
768
769static int s5h1411_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
770{
771 struct s5h1411_state *state = fe->demodulator_priv;
772
773 *ucblocks = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xc9);
774
775 return 0;
776}
777
778static int s5h1411_read_ber(struct dvb_frontend *fe, u32 *ber)
779{
780 return s5h1411_read_ucblocks(fe, ber);
781}
782
783static int s5h1411_get_frontend(struct dvb_frontend *fe,
784 struct dvb_frontend_parameters *p)
785{
786 struct s5h1411_state *state = fe->demodulator_priv;
787
788 p->frequency = state->current_frequency;
789 p->u.vsb.modulation = state->current_modulation;
790
791 return 0;
792}
793
794static int s5h1411_get_tune_settings(struct dvb_frontend *fe,
795 struct dvb_frontend_tune_settings *tune)
796{
797 tune->min_delay_ms = 1000;
798 return 0;
799}
800
801static void s5h1411_release(struct dvb_frontend *fe)
802{
803 struct s5h1411_state *state = fe->demodulator_priv;
804 kfree(state);
805}
806
807static struct dvb_frontend_ops s5h1411_ops;
808
809struct dvb_frontend *s5h1411_attach(const struct s5h1411_config *config,
810 struct i2c_adapter *i2c)
811{
812 struct s5h1411_state *state = NULL;
813 u16 reg;
814
815 /* allocate memory for the internal state */
816 state = kmalloc(sizeof(struct s5h1411_state), GFP_KERNEL);
817 if (state == NULL)
818 goto error;
819
820 /* setup the state */
821 state->config = config;
822 state->i2c = i2c;
823 state->current_modulation = VSB_8;
824 state->inversion = state->config->inversion;
825
826 /* check if the demod exists */
827 reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x05);
828 if (reg != 0x0066)
829 goto error;
830
831 /* create dvb_frontend */
832 memcpy(&state->frontend.ops, &s5h1411_ops,
833 sizeof(struct dvb_frontend_ops));
834
835 state->frontend.demodulator_priv = state;
836
837 if (s5h1411_init(&state->frontend) != 0) {
838 printk(KERN_ERR "%s: Failed to initialize correctly\n",
839 __func__);
840 goto error;
841 }
842
843 /* Note: Leaving the I2C gate open here. */
844 s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xf5, 1);
845
846 return &state->frontend;
847
848error:
849 kfree(state);
850 return NULL;
851}
852EXPORT_SYMBOL(s5h1411_attach);
853
854static struct dvb_frontend_ops s5h1411_ops = {
855
856 .info = {
857 .name = "Samsung S5H1411 QAM/8VSB Frontend",
858 .type = FE_ATSC,
859 .frequency_min = 54000000,
860 .frequency_max = 858000000,
861 .frequency_stepsize = 62500,
862 .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
863 },
864
865 .init = s5h1411_init,
866 .i2c_gate_ctrl = s5h1411_i2c_gate_ctrl,
867 .set_frontend = s5h1411_set_frontend,
868 .get_frontend = s5h1411_get_frontend,
869 .get_tune_settings = s5h1411_get_tune_settings,
870 .read_status = s5h1411_read_status,
871 .read_ber = s5h1411_read_ber,
872 .read_signal_strength = s5h1411_read_signal_strength,
873 .read_snr = s5h1411_read_snr,
874 .read_ucblocks = s5h1411_read_ucblocks,
875 .release = s5h1411_release,
876};
877
878module_param(debug, int, 0644);
879MODULE_PARM_DESC(debug, "Enable verbose debug messages");
880
881MODULE_DESCRIPTION("Samsung S5H1411 QAM-B/ATSC Demodulator driver");
882MODULE_AUTHOR("Steven Toth");
883MODULE_LICENSE("GPL");
884
885/*
886 * Local variables:
887 * c-basic-offset: 8
888 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-18 23:50:40 -0500