| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 |