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| /* SPDX-License-Identifier: GPL-2.0-or-later */
| /*
| * bsru6.h - ALPS BSRU6 tuner support (moved from budget-ci.c)
| *
| * the project's page is at https://linuxtv.org
| */
|
| #ifndef BSRU6_H
| #define BSRU6_H
|
| static u8 alps_bsru6_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
| };
|
| static int alps_bsru6_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_bsru6_tuner_set_params(struct dvb_frontend *fe)
| {
| struct dtv_frontend_properties *p = &fe->dtv_property_cache;
| u8 buf[4];
| u32 div;
| struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
| struct i2c_adapter *i2c = fe->tuner_priv;
|
| if ((p->frequency < 950000) || (p->frequency > 2150000))
| return -EINVAL;
|
| div = (p->frequency + (125 - 1)) / 125; /* round correctly */
| buf[0] = (div >> 8) & 0x7f;
| buf[1] = div & 0xff;
| buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
| buf[3] = 0xC4;
|
| if (p->frequency > 1530000)
| buf[3] = 0xc0;
|
| if (fe->ops.i2c_gate_ctrl)
| fe->ops.i2c_gate_ctrl(fe, 1);
| if (i2c_transfer(i2c, &msg, 1) != 1)
| return -EIO;
| return 0;
| }
|
| static struct stv0299_config alps_bsru6_config = {
| .demod_address = 0x68,
| .inittab = alps_bsru6_inittab,
| .mclk = 88000000UL,
| .invert = 1,
| .skip_reinit = 0,
| .lock_output = STV0299_LOCKOUTPUT_1,
| .volt13_op0_op1 = STV0299_VOLT13_OP1,
| .min_delay_ms = 100,
| .set_symbol_rate = alps_bsru6_set_symbol_rate,
| };
|
| #endif
|
|
