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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)4 *5 * the project's page is at https://linuxtv.org6 */7 8#ifndef BSRU6_H9#define BSRU6_H10 11static u8 alps_bsru6_inittab[] = {12 0x01, 0x15,13 0x02, 0x30,14 0x03, 0x00,15 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 0x3d25 0x11, 0x84,26 0x12, 0xb9,27 0x15, 0xc9, // lock detector threshold28 0x16, 0x00,29 0x17, 0x00,30 0x18, 0x00,31 0x19, 0x00,32 0x1a, 0x00,33 0x1f, 0x50,34 0x20, 0x00,35 0x21, 0x00,36 0x22, 0x00,37 0x23, 0x00,38 0x28, 0x00, // out imp: normal out type: parallel FEC mode:039 0x29, 0x1e, // 1/2 threshold40 0x2a, 0x14, // 2/3 threshold41 0x2b, 0x0f, // 3/4 threshold42 0x2c, 0x09, // 5/6 threshold43 0x2d, 0x05, // 7/8 threshold44 0x2e, 0x01,45 0x31, 0x1f, // test all FECs46 0x32, 0x19, // viterbi and synchro search47 0x33, 0xfc, // rs control48 0x34, 0x93, // error control49 0x0f, 0x52,50 0xff, 0xff51};52 53static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)54{55 u8 aclk = 0;56 u8 bclk = 0;57 58 if (srate < 1500000) {59 aclk = 0xb7;60 bclk = 0x47;61 } else if (srate < 3000000) {62 aclk = 0xb7;63 bclk = 0x4b;64 } else if (srate < 7000000) {65 aclk = 0xb7;66 bclk = 0x4f;67 } else if (srate < 14000000) {68 aclk = 0xb7;69 bclk = 0x53;70 } else if (srate < 30000000) {71 aclk = 0xb6;72 bclk = 0x53;73 } else if (srate < 45000000) {74 aclk = 0xb4;75 bclk = 0x51;76 }77 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);83 84 return 0;85}86 87static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe)88{89 struct dtv_frontend_properties *p = &fe->dtv_property_cache;90 u8 buf[4];91 u32 div;92 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };93 struct i2c_adapter *i2c = fe->tuner_priv;94 95 if ((p->frequency < 950000) || (p->frequency > 2150000))96 return -EINVAL;97 98 div = (p->frequency + (125 - 1)) / 125; /* round correctly */99 buf[0] = (div >> 8) & 0x7f;100 buf[1] = div & 0xff;101 buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;102 buf[3] = 0xC4;103 104 if (p->frequency > 1530000)105 buf[3] = 0xc0;106 107 if (fe->ops.i2c_gate_ctrl)108 fe->ops.i2c_gate_ctrl(fe, 1);109 if (i2c_transfer(i2c, &msg, 1) != 1)110 return -EIO;111 return 0;112}113 114static struct stv0299_config alps_bsru6_config = {115 .demod_address = 0x68,116 .inittab = alps_bsru6_inittab,117 .mclk = 88000000UL,118 .invert = 1,119 .skip_reinit = 0,120 .lock_output = STV0299_LOCKOUTPUT_1,121 .volt13_op0_op1 = STV0299_VOLT13_OP1,122 .min_delay_ms = 100,123 .set_symbol_rate = alps_bsru6_set_symbol_rate,124};125 126#endif127