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.org 6 */ 7 8 #ifndef BSRU6_H 9 #define BSRU6_H 10 11 static 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 0x3d 25 0x11, 0x84, 26 0x12, 0xb9, 27 0x15, 0xc9, // lock detector threshold 28 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: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 44 0x2e, 0x01, 45 0x31, 0x1f, // test all FECs 46 0x32, 0x19, // viterbi and synchro search 47 0x33, 0xfc, // rs control 48 0x34, 0x93, // error control 49 0x0f, 0x52, 50 0xff, 0xff 51 }; 52 53 static 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 87 static 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 } 113 114 static 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 #endif 127