1 /*
2 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * To obtain the license, point your browser to
16 * http://www.gnu.org/copyleft/gpl.html
17 *
18 *
19 * the project's page is at https://linuxtv.org
20 */
21
22 #ifndef BSRU6_H
23 #define BSRU6_H
24
25 static u8 alps_bsru6_inittab[] = {
26 0x01, 0x15,
27 0x02, 0x30,
28 0x03, 0x00,
29 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
30 0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */
31 0x06, 0x40, /* DAC not used, set to high impendance mode */
32 0x07, 0x00, /* DAC LSB */
33 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
34 0x09, 0x00, /* FIFO */
35 0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
36 0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */
37 0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */
38 0x10, 0x3f, // AGC2 0x3d
39 0x11, 0x84,
40 0x12, 0xb9,
41 0x15, 0xc9, // lock detector threshold
42 0x16, 0x00,
43 0x17, 0x00,
44 0x18, 0x00,
45 0x19, 0x00,
46 0x1a, 0x00,
47 0x1f, 0x50,
48 0x20, 0x00,
49 0x21, 0x00,
50 0x22, 0x00,
51 0x23, 0x00,
52 0x28, 0x00, // out imp: normal out type: parallel FEC mode:0
53 0x29, 0x1e, // 1/2 threshold
54 0x2a, 0x14, // 2/3 threshold
55 0x2b, 0x0f, // 3/4 threshold
56 0x2c, 0x09, // 5/6 threshold
57 0x2d, 0x05, // 7/8 threshold
58 0x2e, 0x01,
59 0x31, 0x1f, // test all FECs
60 0x32, 0x19, // viterbi and synchro search
61 0x33, 0xfc, // rs control
62 0x34, 0x93, // error control
63 0x0f, 0x52,
64 0xff, 0xff
65 };
66
alps_bsru6_set_symbol_rate(struct dvb_frontend * fe,u32 srate,u32 ratio)67 static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
68 {
69 u8 aclk = 0;
70 u8 bclk = 0;
71
72 if (srate < 1500000) {
73 aclk = 0xb7;
74 bclk = 0x47;
75 } else if (srate < 3000000) {
76 aclk = 0xb7;
77 bclk = 0x4b;
78 } else if (srate < 7000000) {
79 aclk = 0xb7;
80 bclk = 0x4f;
81 } else if (srate < 14000000) {
82 aclk = 0xb7;
83 bclk = 0x53;
84 } else if (srate < 30000000) {
85 aclk = 0xb6;
86 bclk = 0x53;
87 } else if (srate < 45000000) {
88 aclk = 0xb4;
89 bclk = 0x51;
90 }
91
92 stv0299_writereg(fe, 0x13, aclk);
93 stv0299_writereg(fe, 0x14, bclk);
94 stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
95 stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
96 stv0299_writereg(fe, 0x21, ratio & 0xf0);
97
98 return 0;
99 }
100
alps_bsru6_tuner_set_params(struct dvb_frontend * fe)101 static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe)
102 {
103 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
104 u8 buf[4];
105 u32 div;
106 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
107 struct i2c_adapter *i2c = fe->tuner_priv;
108
109 if ((p->frequency < 950000) || (p->frequency > 2150000))
110 return -EINVAL;
111
112 div = (p->frequency + (125 - 1)) / 125; /* round correctly */
113 buf[0] = (div >> 8) & 0x7f;
114 buf[1] = div & 0xff;
115 buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
116 buf[3] = 0xC4;
117
118 if (p->frequency > 1530000)
119 buf[3] = 0xc0;
120
121 if (fe->ops.i2c_gate_ctrl)
122 fe->ops.i2c_gate_ctrl(fe, 1);
123 if (i2c_transfer(i2c, &msg, 1) != 1)
124 return -EIO;
125 return 0;
126 }
127
128 static struct stv0299_config alps_bsru6_config = {
129 .demod_address = 0x68,
130 .inittab = alps_bsru6_inittab,
131 .mclk = 88000000UL,
132 .invert = 1,
133 .skip_reinit = 0,
134 .lock_output = STV0299_LOCKOUTPUT_1,
135 .volt13_op0_op1 = STV0299_VOLT13_OP1,
136 .min_delay_ms = 100,
137 .set_symbol_rate = alps_bsru6_set_symbol_rate,
138 };
139
140 #endif
141