diff options
Diffstat (limited to 'drivers/media/common/tuners/fc0012.c')
| -rw-r--r-- | drivers/media/common/tuners/fc0012.c | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/drivers/media/common/tuners/fc0012.c b/drivers/media/common/tuners/fc0012.c deleted file mode 100644 index 308135abd54..00000000000 --- a/drivers/media/common/tuners/fc0012.c +++ /dev/null @@ -1,467 +0,0 @@ -/* - * Fitipower FC0012 tuner driver - * - * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "fc0012.h" -#include "fc0012-priv.h" - -static int fc0012_writereg(struct fc0012_priv *priv, u8 reg, u8 val) -{ - u8 buf[2] = {reg, val}; - struct i2c_msg msg = { - .addr = priv->addr, .flags = 0, .buf = buf, .len = 2 - }; - - if (i2c_transfer(priv->i2c, &msg, 1) != 1) { - err("I2C write reg failed, reg: %02x, val: %02x", reg, val); - return -EREMOTEIO; - } - return 0; -} - -static int fc0012_readreg(struct fc0012_priv *priv, u8 reg, u8 *val) -{ - struct i2c_msg msg[2] = { - { .addr = priv->addr, .flags = 0, .buf = ®, .len = 1 }, - { .addr = priv->addr, .flags = I2C_M_RD, .buf = val, .len = 1 }, - }; - - if (i2c_transfer(priv->i2c, msg, 2) != 2) { - err("I2C read reg failed, reg: %02x", reg); - return -EREMOTEIO; - } - return 0; -} - -static int fc0012_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - return 0; -} - -static int fc0012_init(struct dvb_frontend *fe) -{ - struct fc0012_priv *priv = fe->tuner_priv; - int i, ret = 0; - unsigned char reg[] = { - 0x00, /* dummy reg. 0 */ - 0x05, /* reg. 0x01 */ - 0x10, /* reg. 0x02 */ - 0x00, /* reg. 0x03 */ - 0x00, /* reg. 0x04 */ - 0x0f, /* reg. 0x05: may also be 0x0a */ - 0x00, /* reg. 0x06: divider 2, VCO slow */ - 0x00, /* reg. 0x07: may also be 0x0f */ - 0xff, /* reg. 0x08: AGC Clock divide by 256, AGC gain 1/256, - Loop Bw 1/8 */ - 0x6e, /* reg. 0x09: Disable LoopThrough, Enable LoopThrough: 0x6f */ - 0xb8, /* reg. 0x0a: Disable LO Test Buffer */ - 0x82, /* reg. 0x0b: Output Clock is same as clock frequency, - may also be 0x83 */ - 0xfc, /* reg. 0x0c: depending on AGC Up-Down mode, may need 0xf8 */ - 0x02, /* reg. 0x0d: AGC Not Forcing & LNA Forcing, 0x02 for DVB-T */ - 0x00, /* reg. 0x0e */ - 0x00, /* reg. 0x0f */ - 0x00, /* reg. 0x10: may also be 0x0d */ - 0x00, /* reg. 0x11 */ - 0x1f, /* reg. 0x12: Set to maximum gain */ - 0x08, /* reg. 0x13: Set to Middle Gain: 0x08, - Low Gain: 0x00, High Gain: 0x10, enable IX2: 0x80 */ - 0x00, /* reg. 0x14 */ - 0x04, /* reg. 0x15: Enable LNA COMPS */ - }; - - switch (priv->xtal_freq) { - case FC_XTAL_27_MHZ: - case FC_XTAL_28_8_MHZ: - reg[0x07] |= 0x20; - break; - case FC_XTAL_36_MHZ: - default: - break; - } - - if (priv->dual_master) - reg[0x0c] |= 0x02; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ - - for (i = 1; i < sizeof(reg); i++) { - ret = fc0012_writereg(priv, i, reg[i]); - if (ret) - break; - } - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ - - if (ret) - err("fc0012_writereg failed: %d", ret); - - return ret; -} - -static int fc0012_sleep(struct dvb_frontend *fe) -{ - /* nothing to do here */ - return 0; -} - -static int fc0012_set_params(struct dvb_frontend *fe) -{ - struct fc0012_priv *priv = fe->tuner_priv; - int i, ret = 0; - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - u32 freq = p->frequency / 1000; - u32 delsys = p->delivery_system; - unsigned char reg[7], am, pm, multi, tmp; - unsigned long f_vco; - unsigned short xtal_freq_khz_2, xin, xdiv; - int vco_select = false; - - if (fe->callback) { - ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, - FC_FE_CALLBACK_VHF_ENABLE, (freq > 300000 ? 0 : 1)); - if (ret) - goto exit; - } - - switch (priv->xtal_freq) { - case FC_XTAL_27_MHZ: - xtal_freq_khz_2 = 27000 / 2; - break; - case FC_XTAL_36_MHZ: - xtal_freq_khz_2 = 36000 / 2; - break; - case FC_XTAL_28_8_MHZ: - default: - xtal_freq_khz_2 = 28800 / 2; - break; - } - - /* select frequency divider and the frequency of VCO */ - if (freq < 37084) { /* freq * 96 < 3560000 */ - multi = 96; - reg[5] = 0x82; - reg[6] = 0x00; - } else if (freq < 55625) { /* freq * 64 < 3560000 */ - multi = 64; - reg[5] = 0x82; - reg[6] = 0x02; - } else if (freq < 74167) { /* freq * 48 < 3560000 */ - multi = 48; - reg[5] = 0x42; - reg[6] = 0x00; - } else if (freq < 111250) { /* freq * 32 < 3560000 */ - multi = 32; - reg[5] = 0x42; - reg[6] = 0x02; - } else if (freq < 148334) { /* freq * 24 < 3560000 */ - multi = 24; - reg[5] = 0x22; - reg[6] = 0x00; - } else if (freq < 222500) { /* freq * 16 < 3560000 */ - multi = 16; - reg[5] = 0x22; - reg[6] = 0x02; - } else if (freq < 296667) { /* freq * 12 < 3560000 */ - multi = 12; - reg[5] = 0x12; - reg[6] = 0x00; - } else if (freq < 445000) { /* freq * 8 < 3560000 */ - multi = 8; - reg[5] = 0x12; - reg[6] = 0x02; - } else if (freq < 593334) { /* freq * 6 < 3560000 */ - multi = 6; - reg[5] = 0x0a; - reg[6] = 0x00; - } else { - multi = 4; - reg[5] = 0x0a; - reg[6] = 0x02; - } - - f_vco = freq * multi; - - if (f_vco >= 3060000) { - reg[6] |= 0x08; - vco_select = true; - } - - if (freq >= 45000) { - /* From divided value (XDIV) determined the FA and FP value */ - xdiv = (unsigned short)(f_vco / xtal_freq_khz_2); - if ((f_vco - xdiv * xtal_freq_khz_2) >= (xtal_freq_khz_2 / 2)) - xdiv++; - - pm = (unsigned char)(xdiv / 8); - am = (unsigned char)(xdiv - (8 * pm)); - - if (am < 2) { - reg[1] = am + 8; - reg[2] = pm - 1; - } else { - reg[1] = am; - reg[2] = pm; - } - } else { - /* fix for frequency less than 45 MHz */ - reg[1] = 0x06; - reg[2] = 0x11; - } - - /* fix clock out */ - reg[6] |= 0x20; - - /* From VCO frequency determines the XIN ( fractional part of Delta - Sigma PLL) and divided value (XDIV) */ - xin = (unsigned short)(f_vco - (f_vco / xtal_freq_khz_2) * xtal_freq_khz_2); - xin = (xin << 15) / xtal_freq_khz_2; - if (xin >= 16384) - xin += 32768; - - reg[3] = xin >> 8; /* xin with 9 bit resolution */ - reg[4] = xin & 0xff; - - if (delsys == SYS_DVBT) { - reg[6] &= 0x3f; /* bits 6 and 7 describe the bandwidth */ - switch (p->bandwidth_hz) { - case 6000000: - reg[6] |= 0x80; - break; - case 7000000: - reg[6] |= 0x40; - break; - case 8000000: - default: - break; - } - } else { - err("%s: modulation type not supported!", __func__); - return -EINVAL; - } - - /* modified for Realtek demod */ - reg[5] |= 0x07; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ - - for (i = 1; i <= 6; i++) { - ret = fc0012_writereg(priv, i, reg[i]); - if (ret) - goto exit; - } - - /* VCO Calibration */ - ret = fc0012_writereg(priv, 0x0e, 0x80); - if (!ret) - ret = fc0012_writereg(priv, 0x0e, 0x00); - - /* VCO Re-Calibration if needed */ - if (!ret) - ret = fc0012_writereg(priv, 0x0e, 0x00); - - if (!ret) { - msleep(10); - ret = fc0012_readreg(priv, 0x0e, &tmp); - } - if (ret) - goto exit; - - /* vco selection */ - tmp &= 0x3f; - - if (vco_select) { - if (tmp > 0x3c) { - reg[6] &= ~0x08; - ret = fc0012_writereg(priv, 0x06, reg[6]); - if (!ret) - ret = fc0012_writereg(priv, 0x0e, 0x80); - if (!ret) - ret = fc0012_writereg(priv, 0x0e, 0x00); - } - } else { - if (tmp < 0x02) { - reg[6] |= 0x08; - ret = fc0012_writereg(priv, 0x06, reg[6]); - if (!ret) - ret = fc0012_writereg(priv, 0x0e, 0x80); - if (!ret) - ret = fc0012_writereg(priv, 0x0e, 0x00); - } - } - - priv->frequency = p->frequency; - priv->bandwidth = p->bandwidth_hz; - -exit: - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ - if (ret) - warn("%s: failed: %d", __func__, ret); - return ret; -} - -static int fc0012_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct fc0012_priv *priv = fe->tuner_priv; - *frequency = priv->frequency; - return 0; -} - -static int fc0012_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - /* CHECK: always ? */ - *frequency = 0; - return 0; -} - -static int fc0012_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) -{ - struct fc0012_priv *priv = fe->tuner_priv; - *bandwidth = priv->bandwidth; - return 0; -} - -#define INPUT_ADC_LEVEL -8 - -static int fc0012_get_rf_strength(struct dvb_frontend *fe, u16 *strength) -{ - struct fc0012_priv *priv = fe->tuner_priv; - int ret; - unsigned char tmp; - int int_temp, lna_gain, int_lna, tot_agc_gain, power; - const int fc0012_lna_gain_table[] = { - /* low gain */ - -63, -58, -99, -73, - -63, -65, -54, -60, - /* middle gain */ - 71, 70, 68, 67, - 65, 63, 61, 58, - /* high gain */ - 197, 191, 188, 186, - 184, 182, 181, 179, - }; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ - - ret = fc0012_writereg(priv, 0x12, 0x00); - if (ret) - goto err; - - ret = fc0012_readreg(priv, 0x12, &tmp); - if (ret) - goto err; - int_temp = tmp; - - ret = fc0012_readreg(priv, 0x13, &tmp); - if (ret) - goto err; - lna_gain = tmp & 0x1f; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ - - if (lna_gain < ARRAY_SIZE(fc0012_lna_gain_table)) { - int_lna = fc0012_lna_gain_table[lna_gain]; - tot_agc_gain = (abs((int_temp >> 5) - 7) - 2 + - (int_temp & 0x1f)) * 2; - power = INPUT_ADC_LEVEL - tot_agc_gain - int_lna / 10; - - if (power >= 45) - *strength = 255; /* 100% */ - else if (power < -95) - *strength = 0; - else - *strength = (power + 95) * 255 / 140; - - *strength |= *strength << 8; - } else { - ret = -1; - } - - goto exit; - -err: - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ -exit: - if (ret) - warn("%s: failed: %d", __func__, ret); - return ret; -} - -static const struct dvb_tuner_ops fc0012_tuner_ops = { - .info = { - .name = "Fitipower FC0012", - - .frequency_min = 37000000, /* estimate */ - .frequency_max = 862000000, /* estimate */ - .frequency_step = 0, - }, - - .release = fc0012_release, - - .init = fc0012_init, - .sleep = fc0012_sleep, - - .set_params = fc0012_set_params, - - .get_frequency = fc0012_get_frequency, - .get_if_frequency = fc0012_get_if_frequency, - .get_bandwidth = fc0012_get_bandwidth, - - .get_rf_strength = fc0012_get_rf_strength, -}; - -struct dvb_frontend *fc0012_attach(struct dvb_frontend *fe, - struct i2c_adapter *i2c, u8 i2c_address, int dual_master, - enum fc001x_xtal_freq xtal_freq) -{ - struct fc0012_priv *priv = NULL; - - priv = kzalloc(sizeof(struct fc0012_priv), GFP_KERNEL); - if (priv == NULL) - return NULL; - - priv->i2c = i2c; - priv->dual_master = dual_master; - priv->addr = i2c_address; - priv->xtal_freq = xtal_freq; - - info("Fitipower FC0012 successfully attached."); - - fe->tuner_priv = priv; - - memcpy(&fe->ops.tuner_ops, &fc0012_tuner_ops, - sizeof(struct dvb_tuner_ops)); - - return fe; -} -EXPORT_SYMBOL(fc0012_attach); - -MODULE_DESCRIPTION("Fitipower FC0012 silicon tuner driver"); -MODULE_AUTHOR("Hans-Frieder Vogt <hfvogt@gmx.net>"); -MODULE_LICENSE("GPL"); -MODULE_VERSION("0.6"); |