1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * bsbe1.h - ALPS BSBE1 tuner support
4 *
5 * the project's page is at https://linuxtv.org
6 */
7
8 #ifndef BSBE1_H
9 #define BSBE1_H
10
11 static u8 alps_bsbe1_inittab[] = {
12 0x01, 0x15, /* XTAL = 4MHz, VCO = 352 MHz */
13 0x02, 0x30, /* MCLK = 88 MHz */
14 0x03, 0x00, /* ACR output 0 */
15 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
16 0x05, 0x05, /* I2CT = 0, SCLT = 1, SDAT = 1 */
17 0x06, 0x00, /* DAC output 0 */
18 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
19 0x09, 0x00, /* FIFO */
20 0x0c, 0x51, /* OP1/OP0 normal, val = 1 (LNB power on) */
21 0x0d, 0x82, /* DC offset compensation = on, beta_agc1 = 2 */
22 0x0f, 0x92, /* AGC1R */
23 0x10, 0x34, /* AGC2O */
24 0x11, 0x84, /* TLSR */
25 0x12, 0xb9, /* CFD */
26 0x15, 0xc9, /* lock detector threshold */
27 0x28, 0x00, /* out imp: normal, type: parallel, FEC mode: QPSK */
28 0x33, 0xfc, /* RS control */
29 0x34, 0x93, /* count viterbi bit errors per 2E18 bytes */
30 0xff, 0xff
31 };
32
33
alps_bsbe1_set_symbol_rate(struct dvb_frontend * fe,u32 srate,u32 ratio)34 static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
35 {
36 u8 aclk = 0;
37 u8 bclk = 0;
38
39 if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
40 else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
41 else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
42 else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
43 else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
44 else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
45
46 stv0299_writereg(fe, 0x13, aclk);
47 stv0299_writereg(fe, 0x14, bclk);
48 stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
49 stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
50 stv0299_writereg(fe, 0x21, (ratio ) & 0xf0);
51
52 return 0;
53 }
54
alps_bsbe1_tuner_set_params(struct dvb_frontend * fe)55 static int alps_bsbe1_tuner_set_params(struct dvb_frontend *fe)
56 {
57 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
58 int ret;
59 u8 data[4];
60 u32 div;
61 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
62 struct i2c_adapter *i2c = fe->tuner_priv;
63
64 if ((p->frequency < 950000) || (p->frequency > 2150000))
65 return -EINVAL;
66
67 div = p->frequency / 1000;
68 data[0] = (div >> 8) & 0x7f;
69 data[1] = div & 0xff;
70 data[2] = 0x80 | ((div & 0x18000) >> 10) | 0x1;
71 data[3] = 0xe0;
72
73 if (fe->ops.i2c_gate_ctrl)
74 fe->ops.i2c_gate_ctrl(fe, 1);
75 ret = i2c_transfer(i2c, &msg, 1);
76 return (ret != 1) ? -EIO : 0;
77 }
78
79 static struct stv0299_config alps_bsbe1_config = {
80 .demod_address = 0x68,
81 .inittab = alps_bsbe1_inittab,
82 .mclk = 88000000UL,
83 .invert = 1,
84 .skip_reinit = 0,
85 .min_delay_ms = 100,
86 .set_symbol_rate = alps_bsbe1_set_symbol_rate,
87 };
88
89 #endif
90