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
11static 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
34static 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
55static 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
79static 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