| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* z0194a.h Sharp z0194a tuner support |
| * |
| * Copyright (C) 2008 Igor M. Liplianin (liplianin@me.by) |
| * |
| * see Documentation/media/dvb-drivers/dvb-usb.rst for more information |
| */ |
| |
| #ifndef Z0194A |
| #define Z0194A |
| |
| static int sharp_z0194a_set_symbol_rate(struct dvb_frontend *fe, |
| u32 srate, u32 ratio) |
| { |
| u8 aclk = 0; |
| u8 bclk = 0; |
| |
| if (srate < 1500000) { |
| aclk = 0xb7; bclk = 0x47; } |
| else if (srate < 3000000) { |
| aclk = 0xb7; bclk = 0x4b; } |
| else if (srate < 7000000) { |
| aclk = 0xb7; bclk = 0x4f; } |
| else if (srate < 14000000) { |
| aclk = 0xb7; bclk = 0x53; } |
| else if (srate < 30000000) { |
| aclk = 0xb6; bclk = 0x53; } |
| else if (srate < 45000000) { |
| aclk = 0xb4; bclk = 0x51; } |
| |
| stv0299_writereg(fe, 0x13, aclk); |
| stv0299_writereg(fe, 0x14, bclk); |
| stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff); |
| stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff); |
| stv0299_writereg(fe, 0x21, (ratio) & 0xf0); |
| |
| return 0; |
| } |
| |
| static u8 sharp_z0194a_inittab[] = { |
| 0x01, 0x15, |
| 0x02, 0x30, |
| 0x03, 0x00, |
| 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */ |
| 0x05, 0x35, /* I2CT = 0, SCLT = 1, SDAT = 1 */ |
| 0x06, 0x40, /* DAC not used, set to high impendance mode */ |
| 0x07, 0x00, /* DAC LSB */ |
| 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */ |
| 0x09, 0x00, /* FIFO */ |
| 0x0c, 0x51, /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */ |
| 0x0d, 0x82, /* DC offset compensation = ON, beta_agc1 = 2 */ |
| 0x0e, 0x23, /* alpha_tmg = 2, beta_tmg = 3 */ |
| 0x10, 0x3f, /* AGC2 0x3d */ |
| 0x11, 0x84, |
| 0x12, 0xb9, |
| 0x15, 0xc9, /* lock detector threshold */ |
| 0x16, 0x00, |
| 0x17, 0x00, |
| 0x18, 0x00, |
| 0x19, 0x00, |
| 0x1a, 0x00, |
| 0x1f, 0x50, |
| 0x20, 0x00, |
| 0x21, 0x00, |
| 0x22, 0x00, |
| 0x23, 0x00, |
| 0x28, 0x00, /* out imp: normal out type: parallel FEC mode:0 */ |
| 0x29, 0x1e, /* 1/2 threshold */ |
| 0x2a, 0x14, /* 2/3 threshold */ |
| 0x2b, 0x0f, /* 3/4 threshold */ |
| 0x2c, 0x09, /* 5/6 threshold */ |
| 0x2d, 0x05, /* 7/8 threshold */ |
| 0x2e, 0x01, |
| 0x31, 0x1f, /* test all FECs */ |
| 0x32, 0x19, /* viterbi and synchro search */ |
| 0x33, 0xfc, /* rs control */ |
| 0x34, 0x93, /* error control */ |
| 0x0f, 0x52, |
| 0xff, 0xff |
| }; |
| |
| #endif |
