1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
5 * the project's page is at https://linuxtv.org
11 static u8 alps_bsru6_inittab[] = {
15 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
16 0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */
17 0x06, 0x40, /* DAC not used, set to high impendance mode */
18 0x07, 0x00, /* DAC LSB */
19 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
20 0x09, 0x00, /* FIFO */
21 0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
22 0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */
23 0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */
24 0x10, 0x3f, // AGC2 0x3d
27 0x15, 0xc9, // lock detector threshold
38 0x28, 0x00, // out imp: normal out type: parallel FEC mode:0
39 0x29, 0x1e, // 1/2 threshold
40 0x2a, 0x14, // 2/3 threshold
41 0x2b, 0x0f, // 3/4 threshold
42 0x2c, 0x09, // 5/6 threshold
43 0x2d, 0x05, // 7/8 threshold
45 0x31, 0x1f, // test all FECs
46 0x32, 0x19, // viterbi and synchro search
47 0x33, 0xfc, // rs control
48 0x34, 0x93, // error control
53 static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
58 if (srate < 1500000) {
61 } else if (srate < 3000000) {
64 } else if (srate < 7000000) {
67 } else if (srate < 14000000) {
70 } else if (srate < 30000000) {
73 } else if (srate < 45000000) {
78 stv0299_writereg(fe, 0x13, aclk);
79 stv0299_writereg(fe, 0x14, bclk);
80 stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
81 stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
82 stv0299_writereg(fe, 0x21, ratio & 0xf0);
87 static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe)
89 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
92 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
93 struct i2c_adapter *i2c = fe->tuner_priv;
95 if ((p->frequency < 950000) || (p->frequency > 2150000))
98 div = (p->frequency + (125 - 1)) / 125; /* round correctly */
99 buf[0] = (div >> 8) & 0x7f;
101 buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
104 if (p->frequency > 1530000)
107 if (fe->ops.i2c_gate_ctrl)
108 fe->ops.i2c_gate_ctrl(fe, 1);
109 if (i2c_transfer(i2c, &msg, 1) != 1)
114 static struct stv0299_config alps_bsru6_config = {
115 .demod_address = 0x68,
116 .inittab = alps_bsru6_inittab,
120 .lock_output = STV0299_LOCKOUTPUT_1,
121 .volt13_op0_op1 = STV0299_VOLT13_OP1,
123 .set_symbol_rate = alps_bsru6_set_symbol_rate,