83 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/* z0194a.h Sharp z0194a tuner support3*4* Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by)5*6* see Documentation/driver-api/media/drivers/dvb-usb.rst for more information7*/8 9#ifndef Z0194A10#define Z0194A11 12static int sharp_z0194a_set_symbol_rate(struct dvb_frontend *fe,13 u32 srate, u32 ratio)14{15 u8 aclk = 0;16 u8 bclk = 0;17 18 if (srate < 1500000) {19 aclk = 0xb7; bclk = 0x47; }20 else if (srate < 3000000) {21 aclk = 0xb7; bclk = 0x4b; }22 else if (srate < 7000000) {23 aclk = 0xb7; bclk = 0x4f; }24 else if (srate < 14000000) {25 aclk = 0xb7; bclk = 0x53; }26 else if (srate < 30000000) {27 aclk = 0xb6; bclk = 0x53; }28 else if (srate < 45000000) {29 aclk = 0xb4; bclk = 0x51; }30 31 stv0299_writereg(fe, 0x13, aclk);32 stv0299_writereg(fe, 0x14, bclk);33 stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);34 stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);35 stv0299_writereg(fe, 0x21, (ratio) & 0xf0);36 37 return 0;38}39 40static u8 sharp_z0194a_inittab[] = {41 0x01, 0x15,42 0x02, 0x30,43 0x03, 0x00,44 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */45 0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */46 0x06, 0x40, /* DAC not used, set to high impendance mode */47 0x07, 0x00, /* DAC LSB */48 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */49 0x09, 0x00, /* FIFO */50 0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */51 0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */52 0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */53 0x10, 0x3f, /* AGC2 0x3d */54 0x11, 0x84,55 0x12, 0xb9,56 0x15, 0xc9, /* lock detector threshold */57 0x16, 0x00,58 0x17, 0x00,59 0x18, 0x00,60 0x19, 0x00,61 0x1a, 0x00,62 0x1f, 0x50,63 0x20, 0x00,64 0x21, 0x00,65 0x22, 0x00,66 0x23, 0x00,67 0x28, 0x00, /* out imp: normal out type: parallel FEC mode:0 */68 0x29, 0x1e, /* 1/2 threshold */69 0x2a, 0x14, /* 2/3 threshold */70 0x2b, 0x0f, /* 3/4 threshold */71 0x2c, 0x09, /* 5/6 threshold */72 0x2d, 0x05, /* 7/8 threshold */73 0x2e, 0x01,74 0x31, 0x1f, /* test all FECs */75 0x32, 0x19, /* viterbi and synchro search */76 0x33, 0xfc, /* rs control */77 0x34, 0x93, /* error control */78 0x0f, 0x52,79 0xff, 0xff80};81 82#endif83