1 /* 2 * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c) 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * To obtain the license, point your browser to 16 * http://www.gnu.org/copyleft/gpl.html 17 * 18 * 19 * the project's page is at https://linuxtv.org 20 */ 21 22 #ifndef BSRU6_H 23 #define BSRU6_H 24 25 static u8 alps_bsru6_inittab[] = { 26 0x01, 0x15, 27 0x02, 0x30, 28 0x03, 0x00, 29 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */ 30 0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */ 31 0x06, 0x40, /* DAC not used, set to high impendance mode */ 32 0x07, 0x00, /* DAC LSB */ 33 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */ 34 0x09, 0x00, /* FIFO */ 35 0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */ 36 0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */ 37 0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */ 38 0x10, 0x3f, // AGC2 0x3d 39 0x11, 0x84, 40 0x12, 0xb9, 41 0x15, 0xc9, // lock detector threshold 42 0x16, 0x00, 43 0x17, 0x00, 44 0x18, 0x00, 45 0x19, 0x00, 46 0x1a, 0x00, 47 0x1f, 0x50, 48 0x20, 0x00, 49 0x21, 0x00, 50 0x22, 0x00, 51 0x23, 0x00, 52 0x28, 0x00, // out imp: normal out type: parallel FEC mode:0 53 0x29, 0x1e, // 1/2 threshold 54 0x2a, 0x14, // 2/3 threshold 55 0x2b, 0x0f, // 3/4 threshold 56 0x2c, 0x09, // 5/6 threshold 57 0x2d, 0x05, // 7/8 threshold 58 0x2e, 0x01, 59 0x31, 0x1f, // test all FECs 60 0x32, 0x19, // viterbi and synchro search 61 0x33, 0xfc, // rs control 62 0x34, 0x93, // error control 63 0x0f, 0x52, 64 0xff, 0xff 65 }; 66 67 static int alps_bsru6_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio) 68 { 69 u8 aclk = 0; 70 u8 bclk = 0; 71 72 if (srate < 1500000) { 73 aclk = 0xb7; 74 bclk = 0x47; 75 } else if (srate < 3000000) { 76 aclk = 0xb7; 77 bclk = 0x4b; 78 } else if (srate < 7000000) { 79 aclk = 0xb7; 80 bclk = 0x4f; 81 } else if (srate < 14000000) { 82 aclk = 0xb7; 83 bclk = 0x53; 84 } else if (srate < 30000000) { 85 aclk = 0xb6; 86 bclk = 0x53; 87 } else if (srate < 45000000) { 88 aclk = 0xb4; 89 bclk = 0x51; 90 } 91 92 stv0299_writereg(fe, 0x13, aclk); 93 stv0299_writereg(fe, 0x14, bclk); 94 stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff); 95 stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff); 96 stv0299_writereg(fe, 0x21, ratio & 0xf0); 97 98 return 0; 99 } 100 101 static int alps_bsru6_tuner_set_params(struct dvb_frontend *fe) 102 { 103 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 104 u8 buf[4]; 105 u32 div; 106 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) }; 107 struct i2c_adapter *i2c = fe->tuner_priv; 108 109 if ((p->frequency < 950000) || (p->frequency > 2150000)) 110 return -EINVAL; 111 112 div = (p->frequency + (125 - 1)) / 125; /* round correctly */ 113 buf[0] = (div >> 8) & 0x7f; 114 buf[1] = div & 0xff; 115 buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4; 116 buf[3] = 0xC4; 117 118 if (p->frequency > 1530000) 119 buf[3] = 0xc0; 120 121 if (fe->ops.i2c_gate_ctrl) 122 fe->ops.i2c_gate_ctrl(fe, 1); 123 if (i2c_transfer(i2c, &msg, 1) != 1) 124 return -EIO; 125 return 0; 126 } 127 128 static struct stv0299_config alps_bsru6_config = { 129 .demod_address = 0x68, 130 .inittab = alps_bsru6_inittab, 131 .mclk = 88000000UL, 132 .invert = 1, 133 .skip_reinit = 0, 134 .lock_output = STV0299_LOCKOUTPUT_1, 135 .volt13_op0_op1 = STV0299_VOLT13_OP1, 136 .min_delay_ms = 100, 137 .set_symbol_rate = alps_bsru6_set_symbol_rate, 138 }; 139 140 #endif 141