| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * bsbe1.h - ALPS BSBE1 tuner support |
| * |
| * the project's page is at https://linuxtv.org |
| */ |
| |
| #ifndef BSBE1_H |
| #define BSBE1_H |
| |
| static u8 alps_bsbe1_inittab[] = { |
| 0x01, 0x15, /* XTAL = 4MHz, VCO = 352 MHz */ |
| 0x02, 0x30, /* MCLK = 88 MHz */ |
| 0x03, 0x00, /* ACR output 0 */ |
| 0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */ |
| 0x05, 0x05, /* I2CT = 0, SCLT = 1, SDAT = 1 */ |
| 0x06, 0x00, /* DAC output 0 */ |
| 0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */ |
| 0x09, 0x00, /* FIFO */ |
| 0x0c, 0x51, /* OP1/OP0 normal, val = 1 (LNB power on) */ |
| 0x0d, 0x82, /* DC offset compensation = on, beta_agc1 = 2 */ |
| 0x0f, 0x92, /* AGC1R */ |
| 0x10, 0x34, /* AGC2O */ |
| 0x11, 0x84, /* TLSR */ |
| 0x12, 0xb9, /* CFD */ |
| 0x15, 0xc9, /* lock detector threshold */ |
| 0x28, 0x00, /* out imp: normal, type: parallel, FEC mode: QPSK */ |
| 0x33, 0xfc, /* RS control */ |
| 0x34, 0x93, /* count viterbi bit errors per 2E18 bytes */ |
| 0xff, 0xff |
| }; |
| |
| |
| static int alps_bsbe1_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 int alps_bsbe1_tuner_set_params(struct dvb_frontend *fe) |
| { |
| struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
| int ret; |
| u8 data[4]; |
| u32 div; |
| struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) }; |
| struct i2c_adapter *i2c = fe->tuner_priv; |
| |
| if ((p->frequency < 950000) || (p->frequency > 2150000)) |
| return -EINVAL; |
| |
| div = p->frequency / 1000; |
| data[0] = (div >> 8) & 0x7f; |
| data[1] = div & 0xff; |
| data[2] = 0x80 | ((div & 0x18000) >> 10) | 0x1; |
| data[3] = 0xe0; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| ret = i2c_transfer(i2c, &msg, 1); |
| return (ret != 1) ? -EIO : 0; |
| } |
| |
| static struct stv0299_config alps_bsbe1_config = { |
| .demod_address = 0x68, |
| .inittab = alps_bsbe1_inittab, |
| .mclk = 88000000UL, |
| .invert = 1, |
| .skip_reinit = 0, |
| .min_delay_ms = 100, |
| .set_symbol_rate = alps_bsbe1_set_symbol_rate, |
| }; |
| |
| #endif |
