From ef89ec7ecd68f61c67155c1b70d7b1e7176875f0 Mon Sep 17 00:00:00 2001 From: Hans-Frieder Vogt Date: Sun, 6 May 2012 16:56:55 -0300 Subject: [PATCH] [media] fc001x: tuner driver for FC0012, version 0.5 Support for tuner Fitipower FC0012 Signed-off-by: Hans-Frieder Vogt Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/tuners/Kconfig | 7 + drivers/media/common/tuners/Makefile | 1 + drivers/media/common/tuners/fc0012-priv.h | 43 ++++ drivers/media/common/tuners/fc0012.c | 397 ++++++++++++++++++++++++++++++ drivers/media/common/tuners/fc0012.h | 44 ++++ 5 files changed, 492 insertions(+) create mode 100644 drivers/media/common/tuners/fc0012-priv.h create mode 100644 drivers/media/common/tuners/fc0012.c create mode 100644 drivers/media/common/tuners/fc0012.h diff --git a/drivers/media/common/tuners/Kconfig b/drivers/media/common/tuners/Kconfig index 0fd15d9..8518251 100644 --- a/drivers/media/common/tuners/Kconfig +++ b/drivers/media/common/tuners/Kconfig @@ -211,6 +211,13 @@ config MEDIA_TUNER_FC0011 help Fitipower FC0011 silicon tuner driver. +config MEDIA_TUNER_FC0012 + tristate "Fitipower FC0012 silicon tuner" + depends on VIDEO_MEDIA && I2C + default m if MEDIA_TUNER_CUSTOMISE + help + Fitipower FC0012 silicon tuner driver. + config MEDIA_TUNER_TDA18212 tristate "NXP TDA18212 silicon tuner" depends on VIDEO_MEDIA && I2C diff --git a/drivers/media/common/tuners/Makefile b/drivers/media/common/tuners/Makefile index 64ee06f..f046106 100644 --- a/drivers/media/common/tuners/Makefile +++ b/drivers/media/common/tuners/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o obj-$(CONFIG_MEDIA_TUNER_FC0011) += fc0011.o +obj-$(CONFIG_MEDIA_TUNER_FC0012) += fc0012.o ccflags-y += -I$(srctree)/drivers/media/dvb/dvb-core ccflags-y += -I$(srctree)/drivers/media/dvb/frontends diff --git a/drivers/media/common/tuners/fc0012-priv.h b/drivers/media/common/tuners/fc0012-priv.h new file mode 100644 index 0000000..4577c91 --- /dev/null +++ b/drivers/media/common/tuners/fc0012-priv.h @@ -0,0 +1,43 @@ +/* + * Fitipower FC0012 tuner driver - private includes + * + * Copyright (C) 2012 Hans-Frieder Vogt + * + * 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. + */ + +#ifndef _FC0012_PRIV_H_ +#define _FC0012_PRIV_H_ + +#define LOG_PREFIX "fc0012" + +#undef err +#define err(f, arg...) printk(KERN_ERR LOG_PREFIX": " f "\n" , ## arg) +#undef info +#define info(f, arg...) printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg) +#undef warn +#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg) + +struct fc0012_priv { + struct i2c_adapter *i2c; + u8 addr; + u8 dual_master; + u8 xtal_freq; + + u32 frequency; + u32 bandwidth; +}; + +#endif diff --git a/drivers/media/common/tuners/fc0012.c b/drivers/media/common/tuners/fc0012.c new file mode 100644 index 0000000..cd58f90 --- /dev/null +++ b/drivers/media/common/tuners/fc0012.c @@ -0,0 +1,397 @@ +/* + * Fitipower FC0012 tuner driver + * + * Copyright (C) 2012 Hans-Frieder Vogt + * + * 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; +} + + +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, +}; + +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 "); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.5"); diff --git a/drivers/media/common/tuners/fc0012.h b/drivers/media/common/tuners/fc0012.h new file mode 100644 index 0000000..4dbd5efe --- /dev/null +++ b/drivers/media/common/tuners/fc0012.h @@ -0,0 +1,44 @@ +/* + * Fitipower FC0012 tuner driver - include + * + * Copyright (C) 2012 Hans-Frieder Vogt + * + * 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. + */ + +#ifndef _FC0012_H_ +#define _FC0012_H_ + +#include "dvb_frontend.h" +#include "fc001x-common.h" + +#if defined(CONFIG_MEDIA_TUNER_FC0012) || \ + (defined(CONFIG_MEDIA_TUNER_FC0012_MODULE) && defined(MODULE)) +extern 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); +#else +static inline 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) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif + +#endif -- 2.7.4