1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * bsbe1.h - ALPS BSBE1 tuner support 4 * 5 * the project's page is at https://linuxtv.org 6 */ 7 8 #ifndef BSBE1_H 9 #define BSBE1_H 10 11 static u8 alps_bsbe1_inittab[] = { 12 0x01, 0x15, /* XTAL = 4MHz, VCO = 352 MHz */ 13 0x02, 0x30, /* MCLK = 88 MHz */ 14 0x03, 0x00, /* ACR output 0 */ 15 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */ 16 0x05, 0x05, /* I2CT = 0, SCLT = 1, SDAT = 1 */ 17 0x06, 0x00, /* DAC output 0 */ 18 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */ 19 0x09, 0x00, /* FIFO */ 20 0x0c, 0x51, /* OP1/OP0 normal, val = 1 (LNB power on) */ 21 0x0d, 0x82, /* DC offset compensation = on, beta_agc1 = 2 */ 22 0x0f, 0x92, /* AGC1R */ 23 0x10, 0x34, /* AGC2O */ 24 0x11, 0x84, /* TLSR */ 25 0x12, 0xb9, /* CFD */ 26 0x15, 0xc9, /* lock detector threshold */ 27 0x28, 0x00, /* out imp: normal, type: parallel, FEC mode: QPSK */ 28 0x33, 0xfc, /* RS control */ 29 0x34, 0x93, /* count viterbi bit errors per 2E18 bytes */ 30 0xff, 0xff 31 }; 32 33 34 static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio) 35 { 36 u8 aclk = 0; 37 u8 bclk = 0; 38 39 if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; } 40 else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; } 41 else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; } 42 else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; } 43 else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; } 44 else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; } 45 46 stv0299_writereg(fe, 0x13, aclk); 47 stv0299_writereg(fe, 0x14, bclk); 48 stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff); 49 stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff); 50 stv0299_writereg(fe, 0x21, (ratio ) & 0xf0); 51 52 return 0; 53 } 54 55 static int alps_bsbe1_tuner_set_params(struct dvb_frontend *fe) 56 { 57 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 58 int ret; 59 u8 data[4]; 60 u32 div; 61 struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) }; 62 struct i2c_adapter *i2c = fe->tuner_priv; 63 64 if ((p->frequency < 950000) || (p->frequency > 2150000)) 65 return -EINVAL; 66 67 div = p->frequency / 1000; 68 data[0] = (div >> 8) & 0x7f; 69 data[1] = div & 0xff; 70 data[2] = 0x80 | ((div & 0x18000) >> 10) | 0x1; 71 data[3] = 0xe0; 72 73 if (fe->ops.i2c_gate_ctrl) 74 fe->ops.i2c_gate_ctrl(fe, 1); 75 ret = i2c_transfer(i2c, &msg, 1); 76 return (ret != 1) ? -EIO : 0; 77 } 78 79 static struct stv0299_config alps_bsbe1_config = { 80 .demod_address = 0x68, 81 .inittab = alps_bsbe1_inittab, 82 .mclk = 88000000UL, 83 .invert = 1, 84 .skip_reinit = 0, 85 .min_delay_ms = 100, 86 .set_symbol_rate = alps_bsbe1_set_symbol_rate, 87 }; 88 89 #endif 90