1 /* z0194a.h Sharp z0194a tuner support
2 *
3 * Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)
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
86