| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Driver for Quantek QT1010 silicon tuner |
| * |
| * Copyright (C) 2006 Antti Palosaari <crope@iki.fi> |
| * Aapo Tahkola <aet@rasterburn.org> |
| */ |
| #include "qt1010.h" |
| #include "qt1010_priv.h" |
| |
| /* read single register */ |
| static int qt1010_readreg(struct qt1010_priv *priv, u8 reg, u8 *val) |
| { |
| struct i2c_msg msg[2] = { |
| { .addr = priv->cfg->i2c_address, |
| .flags = 0, .buf = ®, .len = 1 }, |
| { .addr = priv->cfg->i2c_address, |
| .flags = I2C_M_RD, .buf = val, .len = 1 }, |
| }; |
| |
| if (i2c_transfer(priv->i2c, msg, 2) != 2) { |
| dev_warn(&priv->i2c->dev, "%s: i2c rd failed reg=%02x\n", |
| KBUILD_MODNAME, reg); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| /* write single register */ |
| static int qt1010_writereg(struct qt1010_priv *priv, u8 reg, u8 val) |
| { |
| u8 buf[2] = { reg, val }; |
| struct i2c_msg msg = { .addr = priv->cfg->i2c_address, |
| .flags = 0, .buf = buf, .len = 2 }; |
| |
| if (i2c_transfer(priv->i2c, &msg, 1) != 1) { |
| dev_warn(&priv->i2c->dev, "%s: i2c wr failed reg=%02x\n", |
| KBUILD_MODNAME, reg); |
| return -EREMOTEIO; |
| } |
| return 0; |
| } |
| |
| static int qt1010_set_params(struct dvb_frontend *fe) |
| { |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| struct qt1010_priv *priv; |
| int err; |
| u32 freq, div, mod1, mod2; |
| u8 i, tmpval, reg05; |
| qt1010_i2c_oper_t rd[48] = { |
| { QT1010_WR, 0x01, 0x80 }, |
| { QT1010_WR, 0x02, 0x3f }, |
| { QT1010_WR, 0x05, 0xff }, /* 02 c write */ |
| { QT1010_WR, 0x06, 0x44 }, |
| { QT1010_WR, 0x07, 0xff }, /* 04 c write */ |
| { QT1010_WR, 0x08, 0x08 }, |
| { QT1010_WR, 0x09, 0xff }, /* 06 c write */ |
| { QT1010_WR, 0x0a, 0xff }, /* 07 c write */ |
| { QT1010_WR, 0x0b, 0xff }, /* 08 c write */ |
| { QT1010_WR, 0x0c, 0xe1 }, |
| { QT1010_WR, 0x1a, 0xff }, /* 10 c write */ |
| { QT1010_WR, 0x1b, 0x00 }, |
| { QT1010_WR, 0x1c, 0x89 }, |
| { QT1010_WR, 0x11, 0xff }, /* 13 c write */ |
| { QT1010_WR, 0x12, 0xff }, /* 14 c write */ |
| { QT1010_WR, 0x22, 0xff }, /* 15 c write */ |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x1e, 0xd0 }, |
| { QT1010_RD, 0x22, 0xff }, /* 16 c read */ |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_RD, 0x05, 0xff }, /* 20 c read */ |
| { QT1010_RD, 0x22, 0xff }, /* 21 c read */ |
| { QT1010_WR, 0x23, 0xd0 }, |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x1e, 0xe0 }, |
| { QT1010_RD, 0x23, 0xff }, /* 25 c read */ |
| { QT1010_RD, 0x23, 0xff }, /* 26 c read */ |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x24, 0xd0 }, |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x1e, 0xf0 }, |
| { QT1010_RD, 0x24, 0xff }, /* 31 c read */ |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x14, 0x7f }, |
| { QT1010_WR, 0x15, 0x7f }, |
| { QT1010_WR, 0x05, 0xff }, /* 35 c write */ |
| { QT1010_WR, 0x06, 0x00 }, |
| { QT1010_WR, 0x15, 0x1f }, |
| { QT1010_WR, 0x16, 0xff }, |
| { QT1010_WR, 0x18, 0xff }, |
| { QT1010_WR, 0x1f, 0xff }, /* 40 c write */ |
| { QT1010_WR, 0x20, 0xff }, /* 41 c write */ |
| { QT1010_WR, 0x21, 0x53 }, |
| { QT1010_WR, 0x25, 0xff }, /* 43 c write */ |
| { QT1010_WR, 0x26, 0x15 }, |
| { QT1010_WR, 0x00, 0xff }, /* 45 c write */ |
| { QT1010_WR, 0x02, 0x00 }, |
| { QT1010_WR, 0x01, 0x00 } |
| }; |
| |
| #define FREQ1 32000000 /* 32 MHz */ |
| #define FREQ2 4000000 /* 4 MHz Quartz oscillator in the stick? */ |
| |
| priv = fe->tuner_priv; |
| freq = c->frequency; |
| div = (freq + QT1010_OFFSET) / QT1010_STEP; |
| freq = (div * QT1010_STEP) - QT1010_OFFSET; |
| mod1 = (freq + QT1010_OFFSET) % FREQ1; |
| mod2 = (freq + QT1010_OFFSET) % FREQ2; |
| priv->frequency = freq; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ |
| |
| /* reg 05 base value */ |
| if (freq < 290000000) reg05 = 0x14; /* 290 MHz */ |
| else if (freq < 610000000) reg05 = 0x34; /* 610 MHz */ |
| else if (freq < 802000000) reg05 = 0x54; /* 802 MHz */ |
| else reg05 = 0x74; |
| |
| /* 0x5 */ |
| rd[2].val = reg05; |
| |
| /* 07 - set frequency: 32 MHz scale */ |
| rd[4].val = (freq + QT1010_OFFSET) / FREQ1; |
| |
| /* 09 - changes every 8/24 MHz */ |
| if (mod1 < 8000000) rd[6].val = 0x1d; |
| else rd[6].val = 0x1c; |
| |
| /* 0a - set frequency: 4 MHz scale (max 28 MHz) */ |
| if (mod1 < 1*FREQ2) rd[7].val = 0x09; /* +0 MHz */ |
| else if (mod1 < 2*FREQ2) rd[7].val = 0x08; /* +4 MHz */ |
| else if (mod1 < 3*FREQ2) rd[7].val = 0x0f; /* +8 MHz */ |
| else if (mod1 < 4*FREQ2) rd[7].val = 0x0e; /* +12 MHz */ |
| else if (mod1 < 5*FREQ2) rd[7].val = 0x0d; /* +16 MHz */ |
| else if (mod1 < 6*FREQ2) rd[7].val = 0x0c; /* +20 MHz */ |
| else if (mod1 < 7*FREQ2) rd[7].val = 0x0b; /* +24 MHz */ |
| else rd[7].val = 0x0a; /* +28 MHz */ |
| |
| /* 0b - changes every 2/2 MHz */ |
| if (mod2 < 2000000) rd[8].val = 0x45; |
| else rd[8].val = 0x44; |
| |
| /* 1a - set frequency: 125 kHz scale (max 3875 kHz)*/ |
| tmpval = 0x78; /* byte, overflows intentionally */ |
| rd[10].val = tmpval-((mod2/QT1010_STEP)*0x08); |
| |
| /* 11 */ |
| rd[13].val = 0xfd; /* TODO: correct value calculation */ |
| |
| /* 12 */ |
| rd[14].val = 0x91; /* TODO: correct value calculation */ |
| |
| /* 22 */ |
| if (freq < 450000000) rd[15].val = 0xd0; /* 450 MHz */ |
| else if (freq < 482000000) rd[15].val = 0xd1; /* 482 MHz */ |
| else if (freq < 514000000) rd[15].val = 0xd4; /* 514 MHz */ |
| else if (freq < 546000000) rd[15].val = 0xd7; /* 546 MHz */ |
| else if (freq < 610000000) rd[15].val = 0xda; /* 610 MHz */ |
| else rd[15].val = 0xd0; |
| |
| /* 05 */ |
| rd[35].val = (reg05 & 0xf0); |
| |
| /* 1f */ |
| if (mod1 < 8000000) tmpval = 0x00; |
| else if (mod1 < 12000000) tmpval = 0x01; |
| else if (mod1 < 16000000) tmpval = 0x02; |
| else if (mod1 < 24000000) tmpval = 0x03; |
| else if (mod1 < 28000000) tmpval = 0x04; |
| else tmpval = 0x05; |
| rd[40].val = (priv->reg1f_init_val + 0x0e + tmpval); |
| |
| /* 20 */ |
| if (mod1 < 8000000) tmpval = 0x00; |
| else if (mod1 < 12000000) tmpval = 0x01; |
| else if (mod1 < 20000000) tmpval = 0x02; |
| else if (mod1 < 24000000) tmpval = 0x03; |
| else if (mod1 < 28000000) tmpval = 0x04; |
| else tmpval = 0x05; |
| rd[41].val = (priv->reg20_init_val + 0x0d + tmpval); |
| |
| /* 25 */ |
| rd[43].val = priv->reg25_init_val; |
| |
| /* 00 */ |
| rd[45].val = 0x92; /* TODO: correct value calculation */ |
| |
| dev_dbg(&priv->i2c->dev, |
| "%s: freq:%u 05:%02x 07:%02x 09:%02x 0a:%02x 0b:%02x " \ |
| "1a:%02x 11:%02x 12:%02x 22:%02x 05:%02x 1f:%02x " \ |
| "20:%02x 25:%02x 00:%02x\n", __func__, \ |
| freq, rd[2].val, rd[4].val, rd[6].val, rd[7].val, \ |
| rd[8].val, rd[10].val, rd[13].val, rd[14].val, \ |
| rd[15].val, rd[35].val, rd[40].val, rd[41].val, \ |
| rd[43].val, rd[45].val); |
| |
| for (i = 0; i < ARRAY_SIZE(rd); i++) { |
| if (rd[i].oper == QT1010_WR) { |
| err = qt1010_writereg(priv, rd[i].reg, rd[i].val); |
| } else { /* read is required to proper locking */ |
| err = qt1010_readreg(priv, rd[i].reg, &tmpval); |
| } |
| if (err) return err; |
| } |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ |
| |
| return 0; |
| } |
| |
| static int qt1010_init_meas1(struct qt1010_priv *priv, |
| u8 oper, u8 reg, u8 reg_init_val, u8 *retval) |
| { |
| u8 i, val1, val2; |
| int err; |
| |
| qt1010_i2c_oper_t i2c_data[] = { |
| { QT1010_WR, reg, reg_init_val }, |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x1e, oper }, |
| }; |
| |
| for (i = 0; i < ARRAY_SIZE(i2c_data); i++) { |
| err = qt1010_writereg(priv, i2c_data[i].reg, |
| i2c_data[i].val); |
| if (err) |
| return err; |
| } |
| |
| err = qt1010_readreg(priv, reg, &val2); |
| if (err) |
| return err; |
| do { |
| val1 = val2; |
| err = qt1010_readreg(priv, reg, &val2); |
| if (err) |
| return err; |
| |
| dev_dbg(&priv->i2c->dev, "%s: compare reg:%02x %02x %02x\n", |
| __func__, reg, val1, val2); |
| } while (val1 != val2); |
| *retval = val1; |
| |
| return qt1010_writereg(priv, 0x1e, 0x00); |
| } |
| |
| static int qt1010_init_meas2(struct qt1010_priv *priv, |
| u8 reg_init_val, u8 *retval) |
| { |
| u8 i, val = 0xff; |
| int err; |
| qt1010_i2c_oper_t i2c_data[] = { |
| { QT1010_WR, 0x07, reg_init_val }, |
| { QT1010_WR, 0x22, 0xd0 }, |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x1e, 0xd0 }, |
| { QT1010_RD, 0x22, 0xff }, |
| { QT1010_WR, 0x1e, 0x00 }, |
| { QT1010_WR, 0x22, 0xff } |
| }; |
| |
| for (i = 0; i < ARRAY_SIZE(i2c_data); i++) { |
| if (i2c_data[i].oper == QT1010_WR) { |
| err = qt1010_writereg(priv, i2c_data[i].reg, |
| i2c_data[i].val); |
| } else { |
| err = qt1010_readreg(priv, i2c_data[i].reg, &val); |
| } |
| if (err) |
| return err; |
| } |
| *retval = val; |
| return 0; |
| } |
| |
| static int qt1010_init(struct dvb_frontend *fe) |
| { |
| struct qt1010_priv *priv = fe->tuner_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| int err = 0; |
| u8 i, tmpval, *valptr = NULL; |
| |
| static const qt1010_i2c_oper_t i2c_data[] = { |
| { QT1010_WR, 0x01, 0x80 }, |
| { QT1010_WR, 0x0d, 0x84 }, |
| { QT1010_WR, 0x0e, 0xb7 }, |
| { QT1010_WR, 0x2a, 0x23 }, |
| { QT1010_WR, 0x2c, 0xdc }, |
| { QT1010_M1, 0x25, 0x40 }, /* get reg 25 init value */ |
| { QT1010_M1, 0x81, 0xff }, /* get reg 25 init value */ |
| { QT1010_WR, 0x2b, 0x70 }, |
| { QT1010_WR, 0x2a, 0x23 }, |
| { QT1010_M1, 0x26, 0x08 }, |
| { QT1010_M1, 0x82, 0xff }, |
| { QT1010_WR, 0x05, 0x14 }, |
| { QT1010_WR, 0x06, 0x44 }, |
| { QT1010_WR, 0x07, 0x28 }, |
| { QT1010_WR, 0x08, 0x0b }, |
| { QT1010_WR, 0x11, 0xfd }, |
| { QT1010_M1, 0x22, 0x0d }, |
| { QT1010_M1, 0xd0, 0xff }, |
| { QT1010_WR, 0x06, 0x40 }, |
| { QT1010_WR, 0x16, 0xf0 }, |
| { QT1010_WR, 0x02, 0x38 }, |
| { QT1010_WR, 0x03, 0x18 }, |
| { QT1010_WR, 0x20, 0xe0 }, |
| { QT1010_M1, 0x1f, 0x20 }, /* get reg 1f init value */ |
| { QT1010_M1, 0x84, 0xff }, /* get reg 1f init value */ |
| { QT1010_RD, 0x20, 0x20 }, /* get reg 20 init value */ |
| { QT1010_WR, 0x03, 0x19 }, |
| { QT1010_WR, 0x02, 0x3f }, |
| { QT1010_WR, 0x21, 0x53 }, |
| { QT1010_RD, 0x21, 0xff }, |
| { QT1010_WR, 0x11, 0xfd }, |
| { QT1010_WR, 0x05, 0x34 }, |
| { QT1010_WR, 0x06, 0x44 }, |
| { QT1010_WR, 0x08, 0x08 } |
| }; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ |
| |
| for (i = 0; i < ARRAY_SIZE(i2c_data); i++) { |
| switch (i2c_data[i].oper) { |
| case QT1010_WR: |
| err = qt1010_writereg(priv, i2c_data[i].reg, |
| i2c_data[i].val); |
| break; |
| case QT1010_RD: |
| if (i2c_data[i].val == 0x20) |
| valptr = &priv->reg20_init_val; |
| else |
| valptr = &tmpval; |
| err = qt1010_readreg(priv, i2c_data[i].reg, valptr); |
| break; |
| case QT1010_M1: |
| if (i2c_data[i].val == 0x25) |
| valptr = &priv->reg25_init_val; |
| else if (i2c_data[i].val == 0x1f) |
| valptr = &priv->reg1f_init_val; |
| else |
| valptr = &tmpval; |
| |
| BUG_ON(i >= ARRAY_SIZE(i2c_data) - 1); |
| |
| err = qt1010_init_meas1(priv, i2c_data[i+1].reg, |
| i2c_data[i].reg, |
| i2c_data[i].val, valptr); |
| i++; |
| break; |
| } |
| if (err) |
| return err; |
| } |
| |
| for (i = 0x31; i < 0x3a; i++) /* 0x31 - 0x39 */ |
| if ((err = qt1010_init_meas2(priv, i, &tmpval))) |
| return err; |
| |
| if (!c->frequency) |
| c->frequency = 545000000; /* Sigmatek DVB-110 545000000 */ |
| /* MSI Megasky 580 GL861 533000000 */ |
| return qt1010_set_params(fe); |
| } |
| |
| static void qt1010_release(struct dvb_frontend *fe) |
| { |
| kfree(fe->tuner_priv); |
| fe->tuner_priv = NULL; |
| } |
| |
| static int qt1010_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| struct qt1010_priv *priv = fe->tuner_priv; |
| *frequency = priv->frequency; |
| return 0; |
| } |
| |
| static int qt1010_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| *frequency = 36125000; |
| return 0; |
| } |
| |
| static const struct dvb_tuner_ops qt1010_tuner_ops = { |
| .info = { |
| .name = "Quantek QT1010", |
| .frequency_min_hz = QT1010_MIN_FREQ, |
| .frequency_max_hz = QT1010_MAX_FREQ, |
| .frequency_step_hz = QT1010_STEP, |
| }, |
| |
| .release = qt1010_release, |
| .init = qt1010_init, |
| /* TODO: implement sleep */ |
| |
| .set_params = qt1010_set_params, |
| .get_frequency = qt1010_get_frequency, |
| .get_if_frequency = qt1010_get_if_frequency, |
| }; |
| |
| struct dvb_frontend * qt1010_attach(struct dvb_frontend *fe, |
| struct i2c_adapter *i2c, |
| struct qt1010_config *cfg) |
| { |
| struct qt1010_priv *priv = NULL; |
| u8 id; |
| |
| priv = kzalloc(sizeof(struct qt1010_priv), GFP_KERNEL); |
| if (priv == NULL) |
| return NULL; |
| |
| priv->cfg = cfg; |
| priv->i2c = i2c; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ |
| |
| |
| /* Try to detect tuner chip. Probably this is not correct register. */ |
| if (qt1010_readreg(priv, 0x29, &id) != 0 || (id != 0x39)) { |
| kfree(priv); |
| return NULL; |
| } |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ |
| |
| dev_info(&priv->i2c->dev, |
| "%s: Quantek QT1010 successfully identified\n", |
| KBUILD_MODNAME); |
| |
| memcpy(&fe->ops.tuner_ops, &qt1010_tuner_ops, |
| sizeof(struct dvb_tuner_ops)); |
| |
| fe->tuner_priv = priv; |
| return fe; |
| } |
| EXPORT_SYMBOL(qt1010_attach); |
| |
| MODULE_DESCRIPTION("Quantek QT1010 silicon tuner driver"); |
| MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| MODULE_AUTHOR("Aapo Tahkola <aet@rasterburn.org>"); |
| MODULE_VERSION("0.1"); |
| MODULE_LICENSE("GPL"); |
