Linux Kernel  3.7.1
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z0194a.h
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1 /* z0194a.h Sharp z0194a tuner support
2 *
3 * Copyright (C) 2008 Igor M. Liplianin ([email protected])
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation, version 2.
8 *
9 * see Documentation/dvb/README.dvb-usb for more information
10 */
11 
12 #ifndef Z0194A
13 #define Z0194A
14 
15 static int sharp_z0194a_set_symbol_rate(struct dvb_frontend *fe,
16  u32 srate, u32 ratio)
17 {
18  u8 aclk = 0;
19  u8 bclk = 0;
20 
21  if (srate < 1500000) {
22  aclk = 0xb7; bclk = 0x47; }
23  else if (srate < 3000000) {
24  aclk = 0xb7; bclk = 0x4b; }
25  else if (srate < 7000000) {
26  aclk = 0xb7; bclk = 0x4f; }
27  else if (srate < 14000000) {
28  aclk = 0xb7; bclk = 0x53; }
29  else if (srate < 30000000) {
30  aclk = 0xb6; bclk = 0x53; }
31  else if (srate < 45000000) {
32  aclk = 0xb4; bclk = 0x51; }
33 
34  stv0299_writereg(fe, 0x13, aclk);
35  stv0299_writereg(fe, 0x14, bclk);
36  stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
37  stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
38  stv0299_writereg(fe, 0x21, (ratio) & 0xf0);
39 
40  return 0;
41 }
42 
43 static u8 sharp_z0194a_inittab[] = {
44  0x01, 0x15,
45  0x02, 0x30,
46  0x03, 0x00,
47  0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
48  0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */
49  0x06, 0x40, /* DAC not used, set to high impendance mode */
50  0x07, 0x00, /* DAC LSB */
51  0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
52  0x09, 0x00, /* FIFO */
53  0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
54  0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */
55  0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */
56  0x10, 0x3f, /* AGC2 0x3d */
57  0x11, 0x84,
58  0x12, 0xb9,
59  0x15, 0xc9, /* lock detector threshold */
60  0x16, 0x00,
61  0x17, 0x00,
62  0x18, 0x00,
63  0x19, 0x00,
64  0x1a, 0x00,
65  0x1f, 0x50,
66  0x20, 0x00,
67  0x21, 0x00,
68  0x22, 0x00,
69  0x23, 0x00,
70  0x28, 0x00, /* out imp: normal out type: parallel FEC mode:0 */
71  0x29, 0x1e, /* 1/2 threshold */
72  0x2a, 0x14, /* 2/3 threshold */
73  0x2b, 0x0f, /* 3/4 threshold */
74  0x2c, 0x09, /* 5/6 threshold */
75  0x2d, 0x05, /* 7/8 threshold */
76  0x2e, 0x01,
77  0x31, 0x1f, /* test all FECs */
78  0x32, 0x19, /* viterbi and synchro search */
79  0x33, 0xfc, /* rs control */
80  0x34, 0x93, /* error control */
81  0x0f, 0x52,
82  0xff, 0xff
83 };
84 
85 #endif