90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* bsbe1.h - ALPS BSBE1 tuner support
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*
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* the project's page is at https://linuxtv.org
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*/
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#ifndef BSBE1_H
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#define BSBE1_H
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static u8 alps_bsbe1_inittab[] = {
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0x01, 0x15, /* XTAL = 4MHz, VCO = 352 MHz */
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0x02, 0x30, /* MCLK = 88 MHz */
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0x03, 0x00, /* ACR output 0 */
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0x04, 0x7d, /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
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0x05, 0x05, /* I2CT = 0, SCLT = 1, SDAT = 1 */
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0x06, 0x00, /* DAC output 0 */
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0x08, 0x40, /* DiSEqC off, LNB power on OP2/LOCK pin on */
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0x09, 0x00, /* FIFO */
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0x0c, 0x51, /* OP1/OP0 normal, val = 1 (LNB power on) */
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0x0d, 0x82, /* DC offset compensation = on, beta_agc1 = 2 */
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0x0f, 0x92, /* AGC1R */
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0x10, 0x34, /* AGC2O */
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0x11, 0x84, /* TLSR */
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0x12, 0xb9, /* CFD */
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0x15, 0xc9, /* lock detector threshold */
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0x28, 0x00, /* out imp: normal, type: parallel, FEC mode: QPSK */
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0x33, 0xfc, /* RS control */
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0x34, 0x93, /* count viterbi bit errors per 2E18 bytes */
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0xff, 0xff
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};
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static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
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{
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u8 aclk = 0;
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u8 bclk = 0;
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if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
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else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
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else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
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else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
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else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
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else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
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stv0299_writereg(fe, 0x13, aclk);
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stv0299_writereg(fe, 0x14, bclk);
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stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
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stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
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stv0299_writereg(fe, 0x21, (ratio ) & 0xf0);
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return 0;
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}
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static int alps_bsbe1_tuner_set_params(struct dvb_frontend *fe)
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{
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struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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int ret;
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u8 data[4];
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u32 div;
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struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
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struct i2c_adapter *i2c = fe->tuner_priv;
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if ((p->frequency < 950000) || (p->frequency > 2150000))
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return -EINVAL;
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div = p->frequency / 1000;
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data[0] = (div >> 8) & 0x7f;
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data[1] = div & 0xff;
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data[2] = 0x80 | ((div & 0x18000) >> 10) | 0x1;
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data[3] = 0xe0;
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1);
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ret = i2c_transfer(i2c, &msg, 1);
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return (ret != 1) ? -EIO : 0;
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}
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static struct stv0299_config alps_bsbe1_config = {
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.demod_address = 0x68,
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.inittab = alps_bsbe1_inittab,
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.mclk = 88000000UL,
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.invert = 1,
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.skip_reinit = 0,
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.min_delay_ms = 100,
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.set_symbol_rate = alps_bsbe1_set_symbol_rate,
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};
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#endif
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