diff options
Diffstat (limited to 'drivers/media/dvb-frontends/bsbe1.h')
| -rw-r--r-- | drivers/media/dvb-frontends/bsbe1.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/bsbe1.h b/drivers/media/dvb-frontends/bsbe1.h new file mode 100644 index 000000000..b4b81e1dd --- /dev/null +++ b/drivers/media/dvb-frontends/bsbe1.h @@ -0,0 +1,89 @@ +/* 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 |