From: Fred Richter Date: Mon, 24 Mar 2014 22:56:00 +0000 (-0300) Subject: [media] DVB: add support for LG Electronics LGDT3306A ATSC/QAM-B Demodulator X-Git-Tag: firefly_0821_release~176^2~795^2~1323 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b63b36fa44d0225de994a535307f941ca87fa908;p=firefly-linux-kernel-4.4.55.git [media] DVB: add support for LG Electronics LGDT3306A ATSC/QAM-B Demodulator This ATSC/QAM-B demodulator is used by several new devices. Add support for it. Other patches will fix CodingStyle issues. Signed-off-by: Fred Richter Signed-off-by: Michael Ira Krufky Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig index bb76727d924e..97c151d5b2e1 100644 --- a/drivers/media/dvb-frontends/Kconfig +++ b/drivers/media/dvb-frontends/Kconfig @@ -577,6 +577,14 @@ config DVB_LGDT3305 An ATSC 8VSB and QAM64/256 tuner module. Say Y when you want to support this frontend. +config DVB_LGDT3306A + tristate "LG Electronics LGDT3306A based" + depends on DVB_CORE && I2C + default m if !MEDIA_SUBDRV_AUTOSELECT + help + An ATSC 8VSB and QAM-B 64/256 demodulator module. Say Y when you want + to support this frontend. + config DVB_LG2160 tristate "LG Electronics LG216x based" depends on DVB_CORE && I2C diff --git a/drivers/media/dvb-frontends/Makefile b/drivers/media/dvb-frontends/Makefile index ba59df63d050..23d399bec804 100644 --- a/drivers/media/dvb-frontends/Makefile +++ b/drivers/media/dvb-frontends/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_DVB_BCM3510) += bcm3510.o obj-$(CONFIG_DVB_S5H1420) += s5h1420.o obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o obj-$(CONFIG_DVB_LGDT3305) += lgdt3305.o +obj-$(CONFIG_DVB_LGDT3306A) += lgdt3306a.o obj-$(CONFIG_DVB_LG2160) += lg2160.o obj-$(CONFIG_DVB_CX24123) += cx24123.o obj-$(CONFIG_DVB_LNBP21) += lnbp21.o diff --git a/drivers/media/dvb-frontends/lgdt3306a.c b/drivers/media/dvb-frontends/lgdt3306a.c new file mode 100644 index 000000000000..c6597b487fd0 --- /dev/null +++ b/drivers/media/dvb-frontends/lgdt3306a.c @@ -0,0 +1,2024 @@ +/* + * Support for LGDT3306A - 8VSB/QAM-B + * + * Copyright (C) 2013 Fred Richter + * - driver structure based on lgdt3305.[ch] by Michael Krufky + * - code based on LG3306_V0.35 API by LG Electronics Inc. + * + * 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 +#include +#include "dvb_math.h" +#include "lgdt3306a.h" + + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))"); + +#define DBG_INFO 1 +#define DBG_REG 2 +#define DBG_DUMP 4 //FGR - comment out to remove dump code + +#define lg_printk(kern, fmt, arg...) \ + printk(kern "%s(): " fmt, __func__, ##arg) + +#define lg_info(fmt, arg...) printk(KERN_INFO "lgdt3306a: " fmt, ##arg) +#define lg_warn(fmt, arg...) lg_printk(KERN_WARNING, fmt, ##arg) +#define lg_err(fmt, arg...) lg_printk(KERN_ERR, fmt, ##arg) +#define lg_dbg(fmt, arg...) if (debug & DBG_INFO) \ + lg_printk(KERN_DEBUG, fmt, ##arg) +#define lg_reg(fmt, arg...) if (debug & DBG_REG) \ + lg_printk(KERN_DEBUG, fmt, ##arg) + +#define lg_chkerr(ret) \ +({ \ + int __ret; \ + __ret = (ret < 0); \ + if (__ret) \ + lg_err("error %d on line %d\n", ret, __LINE__); \ + __ret; \ +}) + +struct lgdt3306a_state { + struct i2c_adapter *i2c_adap; + const struct lgdt3306a_config *cfg; + + struct dvb_frontend frontend; + + fe_modulation_t current_modulation; + u32 current_frequency; + u32 snr; +}; + +/* ----------------------------------------------- + LG3306A Register Usage + (LG does not really name the registers, so this code does not either) + 0000 -> 00FF Common control and status + 1000 -> 10FF Synchronizer control and status + 1F00 -> 1FFF Smart Antenna control and status + 2100 -> 21FF VSB Equalizer control and status + 2800 -> 28FF QAM Equalizer control and status + 3000 -> 30FF FEC control and status + ---------------------------------------------- */ + +typedef enum{ + LG3306_UNLOCK = 0x00, + LG3306_LOCK = 0x01, + LG3306_UNKNOWN_LOCK = 0xFF +}LG3306_LOCK_STATUS; + +typedef enum{ + LG3306_NL_INIT = 0x00, + LG3306_NL_PROCESS = 0x01, + LG3306_NL_LOCK = 0x02, + LG3306_NL_FAIL = 0x03, + LG3306_NL_UNKNOWN = 0xFF +}LG3306_NEVERLOCK_STATUS; + +typedef enum{ + LG3306_VSB = 0x00, + LG3306_QAM64 = 0x01, + LG3306_QAM256 = 0x02, + LG3306_UNKNOWN_MODE = 0xFF +}LG3306_MODULATION; + +typedef enum +{ + LG3306_SYNC_LOCK, + LG3306_FEC_LOCK, + LG3306_TR_LOCK, + LG3306_AGC_LOCK, +} LG3306_LOCK_CHECK; + + +#ifdef DBG_DUMP +static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state); +static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state); +#endif + + +static int lgdt3306a_write_reg(struct lgdt3306a_state *state, u16 reg, u8 val) +{ + int ret; + u8 buf[] = { reg >> 8, reg & 0xff, val }; + struct i2c_msg msg = { + .addr = state->cfg->i2c_addr, .flags = 0, + .buf = buf, .len = 3, + }; + + lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val); + + ret = i2c_transfer(state->i2c_adap, &msg, 1); + + if (ret != 1) { + lg_err("error (addr %02x %02x <- %02x, err = %i)\n", + msg.buf[0], msg.buf[1], msg.buf[2], ret); + if (ret < 0) + return ret; + else + return -EREMOTEIO; + } + return 0; +} + +static int lgdt3306a_read_reg(struct lgdt3306a_state *state, u16 reg, u8 *val) +{ + int ret; + u8 reg_buf[] = { reg >> 8, reg & 0xff }; + struct i2c_msg msg[] = { + { .addr = state->cfg->i2c_addr, + .flags = 0, .buf = reg_buf, .len = 2 }, + { .addr = state->cfg->i2c_addr, + .flags = I2C_M_RD, .buf = val, .len = 1 }, + }; + + ret = i2c_transfer(state->i2c_adap, msg, 2); + + if (ret != 2) { + lg_err("error (addr %02x reg %04x error (ret == %i)\n", + state->cfg->i2c_addr, reg, ret); + if (ret < 0) + return ret; + else + return -EREMOTEIO; + } + lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, *val); + + return 0; +} + +#define read_reg(state, reg) \ +({ \ + u8 __val; \ + int ret = lgdt3306a_read_reg(state, reg, &__val); \ + if (lg_chkerr(ret)) \ + __val = 0; \ + __val; \ +}) + +static int lgdt3306a_set_reg_bit(struct lgdt3306a_state *state, + u16 reg, int bit, int onoff) +{ + u8 val; + int ret; + + lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff); + + ret = lgdt3306a_read_reg(state, reg, &val); + if (lg_chkerr(ret)) + goto fail; + + val &= ~(1 << bit); + val |= (onoff & 1) << bit; + + ret = lgdt3306a_write_reg(state, reg, val); + lg_chkerr(ret); +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lgdt3306a_soft_reset(struct lgdt3306a_state *state) +{ + int ret; + + lg_dbg("\n"); + + ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); + if (lg_chkerr(ret)) + goto fail; + + msleep(20); + ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); + lg_chkerr(ret); + +fail: + return ret; +} + +static int lgdt3306a_mpeg_mode(struct lgdt3306a_state *state, + enum lgdt3306a_mpeg_mode mode) +{ + u8 val; + int ret; + + lg_dbg("(%d)\n", mode); + //transport packet format + ret = lgdt3306a_set_reg_bit(state, 0x0071, 7, mode==LGDT3306A_MPEG_PARALLEL?1:0); //TPSENB=0x80 + if (lg_chkerr(ret)) + goto fail; + + //start of packet signal duration + ret = lgdt3306a_set_reg_bit(state, 0x0071, 6, 0); //TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_read_reg(state, 0x0070, &val); + if (lg_chkerr(ret)) + goto fail; + + val |= 0x10;//TPCLKSUPB=0x10 + + if (mode==LGDT3306A_MPEG_PARALLEL) + val &= ~0x10; + + ret = lgdt3306a_write_reg(state, 0x0070, val); + lg_chkerr(ret); + +fail: + return ret; +} + +static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state *state, + enum lgdt3306a_tp_clock_edge edge, + enum lgdt3306a_tp_valid_polarity valid) +{ + u8 val; + int ret; + + lg_dbg("edge=%d, valid=%d\n", edge, valid); + + ret = lgdt3306a_read_reg(state, 0x0070, &val); + if (lg_chkerr(ret)) + goto fail; + + val &= ~0x06;//TPCLKPOL=0x04, TPVALPOL=0x02 + + if (edge==LGDT3306A_TPCLK_RISING_EDGE) + val |= 0x04; + if (valid==LGDT3306A_TP_VALID_HIGH) + val |= 0x02; + + ret = lgdt3306a_write_reg(state, 0x0070, val); + lg_chkerr(ret); + +fail: + return ret; +} + +static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state *state, + int mode) +{ + u8 val; + int ret; + + lg_dbg("(%d)\n", mode); + + if(mode){ + ret = lgdt3306a_read_reg(state, 0x0070, &val); + if (lg_chkerr(ret)) + goto fail; + val &= ~0xA8; //Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20, TPDATAOUTEN=0x08 + ret = lgdt3306a_write_reg(state, 0x0070, val); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 1);//AGCIFOUTENB=0x40; 1=Disable IFAGC pin + if (lg_chkerr(ret)) + goto fail; + + } else { + ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 0);//enable IFAGC pin + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_read_reg(state, 0x0070, &val); + if (lg_chkerr(ret)) + goto fail; + + val |= 0xA8; //Enable bus + ret = lgdt3306a_write_reg(state, 0x0070, val); + if (lg_chkerr(ret)) + goto fail; + } + +fail: + return ret; +} + +static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend* fe, int acquire) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + + lg_dbg("acquire=%d\n", acquire); + + return lgdt3306a_mpeg_tristate(state, acquire ? 0 : 1); + +} + +static int lgdt3306a_power(struct lgdt3306a_state *state, + int mode) +{ + int ret; + + lg_dbg("(%d)\n", mode); + + if(mode == 0){ + ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); //into reset + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 0); //power down + if (lg_chkerr(ret)) + goto fail; + + } else { + ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); //out of reset + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 1); //power up + if (lg_chkerr(ret)) + goto fail; + } + +#ifdef DBG_DUMP + lgdt3306a_DumpAllRegs(state); +#endif +fail: + return ret; +} + + +static int lgdt3306a_set_vsb(struct lgdt3306a_state *state) +{ + u8 val; + int ret; + + lg_dbg("\n"); + + // 0. Spectrum inversion detection manual; spectrum inverted + ret = lgdt3306a_read_reg(state, 0x0002, &val); + val &= 0xF7; //SPECINVAUTO Off + val |= 0x04; //SPECINV On + ret = lgdt3306a_write_reg(state, 0x0002, val); + if (lg_chkerr(ret)) + goto fail; + + // 1. Selection of standard mode(0x08=QAM, 0x80=VSB) + ret = lgdt3306a_write_reg(state, 0x0008, 0x80); + if (lg_chkerr(ret)) + goto fail; + + // 2. Bandwidth mode for VSB(6MHz) + ret = lgdt3306a_read_reg(state, 0x0009, &val); + val &= 0xE3; + val |= 0x0C; //STDOPDETTMODE[2:0]=3 + ret = lgdt3306a_write_reg(state, 0x0009, val); + if (lg_chkerr(ret)) + goto fail; + + // 3. QAM mode detection mode(None) + ret = lgdt3306a_read_reg(state, 0x0009, &val); + val &= 0xFC; //STDOPDETCMODE[1:0]=0 + ret = lgdt3306a_write_reg(state, 0x0009, val); + if (lg_chkerr(ret)) + goto fail; + + // 4. ADC sampling frequency rate(2x sampling) + ret = lgdt3306a_read_reg(state, 0x000D, &val); + val &= 0xBF; //SAMPLING4XFEN=0 + ret = lgdt3306a_write_reg(state, 0x000D, val); + if (lg_chkerr(ret)) + goto fail; + +#if 0 //FGR - disable any AICC filtering, testing only + ret = lgdt3306a_write_reg(state, 0x0024, 0x00); + if (lg_chkerr(ret)) + goto fail; + + //AICCFIXFREQ0 NT N-1(Video rejection) + ret = lgdt3306a_write_reg(state, 0x002E, 0x00); + ret = lgdt3306a_write_reg(state, 0x002F, 0x00); + ret = lgdt3306a_write_reg(state, 0x0030, 0x00); + + //AICCFIXFREQ1 NT N-1(Audio rejection) + ret = lgdt3306a_write_reg(state, 0x002B, 0x00); + ret = lgdt3306a_write_reg(state, 0x002C, 0x00); + ret = lgdt3306a_write_reg(state, 0x002D, 0x00); + + //AICCFIXFREQ2 NT Co-Channel(Video rejection) + ret = lgdt3306a_write_reg(state, 0x0028, 0x00); + ret = lgdt3306a_write_reg(state, 0x0029, 0x00); + ret = lgdt3306a_write_reg(state, 0x002A, 0x00); + + //AICCFIXFREQ3 NT Co-Channel(Audio rejection) + ret = lgdt3306a_write_reg(state, 0x0025, 0x00); + ret = lgdt3306a_write_reg(state, 0x0026, 0x00); + ret = lgdt3306a_write_reg(state, 0x0027, 0x00); + +#else //FGR - this works well for HVR-1955,1975 + // 5. AICCOPMODE NT N-1 Adj. + ret = lgdt3306a_write_reg(state, 0x0024, 0x5A); + if (lg_chkerr(ret)) + goto fail; + + //AICCFIXFREQ0 NT N-1(Video rejection) + ret = lgdt3306a_write_reg(state, 0x002E, 0x5A); + ret = lgdt3306a_write_reg(state, 0x002F, 0x00); + ret = lgdt3306a_write_reg(state, 0x0030, 0x00); + + //AICCFIXFREQ1 NT N-1(Audio rejection) + ret = lgdt3306a_write_reg(state, 0x002B, 0x36); + ret = lgdt3306a_write_reg(state, 0x002C, 0x00); + ret = lgdt3306a_write_reg(state, 0x002D, 0x00); + + //AICCFIXFREQ2 NT Co-Channel(Video rejection) + ret = lgdt3306a_write_reg(state, 0x0028, 0x2A); + ret = lgdt3306a_write_reg(state, 0x0029, 0x00); + ret = lgdt3306a_write_reg(state, 0x002A, 0x00); + + //AICCFIXFREQ3 NT Co-Channel(Audio rejection) + ret = lgdt3306a_write_reg(state, 0x0025, 0x06); + ret = lgdt3306a_write_reg(state, 0x0026, 0x00); + ret = lgdt3306a_write_reg(state, 0x0027, 0x00); +#endif + + ret = lgdt3306a_read_reg(state, 0x001E, &val); + val &= 0x0F; + val |= 0xA0; + ret = lgdt3306a_write_reg(state, 0x001E, val); + + ret = lgdt3306a_write_reg(state, 0x0022, 0x08); + + ret = lgdt3306a_write_reg(state, 0x0023, 0xFF); + + ret = lgdt3306a_read_reg(state, 0x211F, &val); + val &= 0xEF; + ret = lgdt3306a_write_reg(state, 0x211F, val); + + ret = lgdt3306a_write_reg(state, 0x2173, 0x01); + + ret = lgdt3306a_read_reg(state, 0x1061, &val); + val &= 0xF8; + val |= 0x04; + ret = lgdt3306a_write_reg(state, 0x1061, val); + + ret = lgdt3306a_read_reg(state, 0x103D, &val); + val &= 0xCF; + ret = lgdt3306a_write_reg(state, 0x103D, val); + + ret = lgdt3306a_write_reg(state, 0x2122, 0x40); + + ret = lgdt3306a_read_reg(state, 0x2141, &val); + val &= 0x3F; + ret = lgdt3306a_write_reg(state, 0x2141, val); + + ret = lgdt3306a_read_reg(state, 0x2135, &val); + val &= 0x0F; + val |= 0x70; + ret = lgdt3306a_write_reg(state, 0x2135, val); + + ret = lgdt3306a_read_reg(state, 0x0003, &val); + val &= 0xF7; + ret = lgdt3306a_write_reg(state, 0x0003, val); + + ret = lgdt3306a_read_reg(state, 0x001C, &val); + val &= 0x7F; + ret = lgdt3306a_write_reg(state, 0x001C, val); + + // 6. EQ step size + ret = lgdt3306a_read_reg(state, 0x2179, &val); + val &= 0xF8; + ret = lgdt3306a_write_reg(state, 0x2179, val); + + ret = lgdt3306a_read_reg(state, 0x217A, &val); + val &= 0xF8; + ret = lgdt3306a_write_reg(state, 0x217A, val); + + // 7. Reset + ret = lgdt3306a_soft_reset(state); + if (lg_chkerr(ret)) + goto fail; + + lg_dbg("complete\n"); +fail: + return ret; +} + +static int lgdt3306a_set_qam(struct lgdt3306a_state *state, int modulation) +{ + u8 val; + int ret; + + lg_dbg("modulation=%d\n", modulation); + + // 1. Selection of standard mode(0x08=QAM, 0x80=VSB) + ret = lgdt3306a_write_reg(state, 0x0008, 0x08); + if (lg_chkerr(ret)) + goto fail; + + // 1a. Spectrum inversion detection to Auto + ret = lgdt3306a_read_reg(state, 0x0002, &val); + val &= 0xFB; //SPECINV Off + val |= 0x08; //SPECINVAUTO On + ret = lgdt3306a_write_reg(state, 0x0002, val); + if (lg_chkerr(ret)) + goto fail; + + // 2. Bandwidth mode for QAM + ret = lgdt3306a_read_reg(state, 0x0009, &val); + val &= 0xE3; //STDOPDETTMODE[2:0]=0 VSB Off + ret = lgdt3306a_write_reg(state, 0x0009, val); + if (lg_chkerr(ret)) + goto fail; + + // 3. : 64QAM/256QAM detection(manual, auto) + ret = lgdt3306a_read_reg(state, 0x0009, &val); + val &= 0xFC; + val |= 0x02; //STDOPDETCMODE[1:0]=1=Manual 2=Auto + ret = lgdt3306a_write_reg(state, 0x0009, val); + if (lg_chkerr(ret)) + goto fail; + + // 3a. : 64QAM/256QAM selection for manual + ret = lgdt3306a_read_reg(state, 0x101a, &val); + val &= 0xF8; + if(modulation == QAM_64){ + val |= 0x02; //QMDQMODE[2:0]=2=QAM64 + } else { + val |= 0x04; //QMDQMODE[2:0]=4=QAM256 + } + ret = lgdt3306a_write_reg(state, 0x101a, val); + if (lg_chkerr(ret)) + goto fail; + + // 4. ADC sampling frequency rate(4x sampling) + ret = lgdt3306a_read_reg(state, 0x000D, &val); + val &= 0xBF; + val |= 0x40; //SAMPLING4XFEN=1 + ret = lgdt3306a_write_reg(state, 0x000D, val); + if (lg_chkerr(ret)) + goto fail; + + // 5. No AICC operation in QAM mode + ret = lgdt3306a_read_reg(state, 0x0024, &val); + val &= 0x00; + ret = lgdt3306a_write_reg(state, 0x0024, val); + if (lg_chkerr(ret)) + goto fail; + + // 6. Reset + ret = lgdt3306a_soft_reset(state); + if (lg_chkerr(ret)) + goto fail; + + lg_dbg("complete\n"); +fail: + return ret; +} + +static int lgdt3306a_set_modulation(struct lgdt3306a_state *state, + struct dtv_frontend_properties *p) +{ + int ret; + + lg_dbg("\n"); + + switch (p->modulation) { + case VSB_8: + ret = lgdt3306a_set_vsb(state); + break; + case QAM_64: + ret = lgdt3306a_set_qam(state, QAM_64); + break; + case QAM_256: + ret = lgdt3306a_set_qam(state, QAM_256); + break; + default: + return -EINVAL; + } + if (lg_chkerr(ret)) + goto fail; + + state->current_modulation = p->modulation; + +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lgdt3306a_agc_setup(struct lgdt3306a_state *state, + struct dtv_frontend_properties *p) +{ + //TODO: anything we want to do here??? + lg_dbg("\n"); + + switch (p->modulation) { + case VSB_8: + break; + case QAM_64: + case QAM_256: + break; + default: + return -EINVAL; + } + return 0; +} + +/* ------------------------------------------------------------------------ */ + +static int lgdt3306a_set_inversion(struct lgdt3306a_state *state, + int inversion) +{ + int ret; + + lg_dbg("(%d)\n", inversion); + + ret = lgdt3306a_set_reg_bit(state, 0x0002, 2, inversion?1:0); + return ret; +} + +static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state, + int enabled) +{ + int ret; + + lg_dbg("(%d)\n", enabled); + + //0=Manual 1=Auto(QAM only) + ret = lgdt3306a_set_reg_bit(state, 0x0002, 3, enabled);//SPECINVAUTO=0x04 + return ret; +} + +static int lgdt3306a_spectral_inversion(struct lgdt3306a_state *state, + struct dtv_frontend_properties *p, + int inversion) +{ + int ret = 0; + + lg_dbg("(%d)\n", inversion); +#if 0//FGR - spectral_inversion defaults already set for VSB and QAM; can enable later if desired + + ret = lgdt3306a_set_inversion(state, inversion); + + switch (p->modulation) { + case VSB_8: + ret = lgdt3306a_set_inversion_auto(state, 0);//Manual only for VSB + break; + case QAM_64: + case QAM_256: + ret = lgdt3306a_set_inversion_auto(state, 1);//Auto ok for QAM + break; + default: + ret = -EINVAL; + } +#endif + return ret; +} + +static int lgdt3306a_set_if(struct lgdt3306a_state *state, + struct dtv_frontend_properties *p) +{ + int ret; + u16 if_freq_khz; + u8 nco1, nco2; + + switch (p->modulation) { + case VSB_8: + if_freq_khz = state->cfg->vsb_if_khz; + break; + case QAM_64: + case QAM_256: + if_freq_khz = state->cfg->qam_if_khz; + break; + default: + return -EINVAL; + } + + switch(if_freq_khz){ + default: + lg_warn("IF=%d KHz is not supportted, 3250 assumed\n", if_freq_khz); + //fallthrough + case 3250: //3.25Mhz + nco1 = 0x34; + nco2 = 0x00; + break; + case 3500: //3.50Mhz + nco1 = 0x38; + nco2 = 0x00; + break; + case 4000: //4.00Mhz + nco1 = 0x40; + nco2 = 0x00; + break; + case 5000: //5.00Mhz + nco1 = 0x50; + nco2 = 0x00; + break; + case 5380: //5.38Mhz + nco1 = 0x56; + nco2 = 0x14; + break; + } + ret = lgdt3306a_write_reg(state, 0x0010, nco1); + ret = lgdt3306a_write_reg(state, 0x0011, nco2); + + lg_dbg("if_freq=%d KHz->[%04x]\n", if_freq_khz, nco1<<8 | nco2); + + return 0; +} + +/* ------------------------------------------------------------------------ */ + +static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + + if (state->cfg->deny_i2c_rptr){ + lg_dbg("deny_i2c_rptr=%d\n", state->cfg->deny_i2c_rptr); + return 0; + } + lg_dbg("(%d)\n", enable); + + return lgdt3306a_set_reg_bit(state, 0x0002, 7, enable? 0 : 1); //NI2CRPTEN=0x80 +} + +static int lgdt3306a_sleep(struct lgdt3306a_state *state) +{ + int ret; + + lg_dbg("\n"); + state->current_frequency = -1; //force re-tune, when we wake + + ret = lgdt3306a_mpeg_tristate(state, 1); //disable data bus + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_power(state, 0); //power down + lg_chkerr(ret); + +fail: + return 0; +} + +static int lgdt3306a_fe_sleep(struct dvb_frontend *fe) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + + return lgdt3306a_sleep(state); +} + +static int lgdt3306a_init(struct dvb_frontend *fe) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + u8 val; + int ret; + + lg_dbg("\n"); + + // 1. Normal operation mode + ret = lgdt3306a_set_reg_bit(state, 0x0001, 0, 1); //SIMFASTENB=0x01 + if (lg_chkerr(ret)) + goto fail; + + // 2. Spectrum inversion auto detection (Not valid for VSB) + ret = lgdt3306a_set_inversion_auto(state, 0); + if (lg_chkerr(ret)) + goto fail; + + // 3. Spectrum inversion(According to the tuner configuration) + ret = lgdt3306a_set_inversion(state, 1); + if (lg_chkerr(ret)) + goto fail; + + // 4. Peak-to-peak voltage of ADC input signal + ret = lgdt3306a_set_reg_bit(state, 0x0004, 7, 1); //ADCSEL1V=0x80=1Vpp; 0x00=2Vpp + if (lg_chkerr(ret)) + goto fail; + + // 5. ADC output data capture clock phase + ret = lgdt3306a_set_reg_bit(state, 0x0004, 2, 0); //0=same phase as ADC clock + if (lg_chkerr(ret)) + goto fail; + + // 5a. ADC sampling clock source + ret = lgdt3306a_set_reg_bit(state, 0x0004, 3, 0); //ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL + if (lg_chkerr(ret)) + goto fail; + + // 6. Automatic PLL set + ret = lgdt3306a_set_reg_bit(state, 0x0005, 6, 0); //PLLSETAUTO=0x40; 0=off + if (lg_chkerr(ret)) + goto fail; + + if (state->cfg->xtalMHz == 24){ // 24MHz + // 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) + ret = lgdt3306a_read_reg(state, 0x0005, &val); + if (lg_chkerr(ret)) + goto fail; + val &= 0xC0; + val |= 0x25; + ret = lgdt3306a_write_reg(state, 0x0005, val); + if (lg_chkerr(ret)) + goto fail; + ret = lgdt3306a_write_reg(state, 0x0006, 0x64); + if (lg_chkerr(ret)) + goto fail; + + // 8. ADC sampling frequency(0x180000 for 24MHz sampling) + ret = lgdt3306a_read_reg(state, 0x000D, &val); + if (lg_chkerr(ret)) + goto fail; + val &= 0xC0; + val |= 0x18; + ret = lgdt3306a_write_reg(state, 0x000D, val); + if (lg_chkerr(ret)) + goto fail; + + } else if (state->cfg->xtalMHz == 25){// 25MHz + // 7. Frequency for PLL output + ret = lgdt3306a_read_reg(state, 0x0005, &val); + if (lg_chkerr(ret)) + goto fail; + val &= 0xC0; + val |= 0x25; + ret = lgdt3306a_write_reg(state, 0x0005, val); + if (lg_chkerr(ret)) + goto fail; + ret = lgdt3306a_write_reg(state, 0x0006, 0x64); + if (lg_chkerr(ret)) + goto fail; + + // 8. ADC sampling frequency(0x190000 for 25MHz sampling) + ret = lgdt3306a_read_reg(state, 0x000D, &val); + if (lg_chkerr(ret)) + goto fail; + val &= 0xC0; + val |= 0x19; + ret = lgdt3306a_write_reg(state, 0x000D, val); + if (lg_chkerr(ret)) + goto fail; + } else { + lg_err("Bad xtalMHz=%d\n", state->cfg->xtalMHz); + } +// ret = lgdt3306a_write_reg(state, 0x000E, 0x00); +// ret = lgdt3306a_write_reg(state, 0x000F, 0x00); + + // 9. Center frequency of input signal of ADC + ret = lgdt3306a_write_reg(state, 0x0010, 0x34); //3.25MHz + ret = lgdt3306a_write_reg(state, 0x0011, 0x00); + + // 10. Fixed gain error value + ret = lgdt3306a_write_reg(state, 0x0014, 0); //gain error=0 + + // 10a. VSB TR BW gear shift initial step + ret = lgdt3306a_read_reg(state, 0x103C, &val); + val &= 0x0F; + val |= 0x20; //SAMGSAUTOSTL_V[3:0] = 2 + ret = lgdt3306a_write_reg(state, 0x103C, val); + + // 10b. Timing offset calibration in low temperature for VSB + ret = lgdt3306a_read_reg(state, 0x103D, &val); + val &= 0xFC; + val |= 0x03; + ret = lgdt3306a_write_reg(state, 0x103D, val); + + // 10c. Timing offset calibration in low temperature for QAM + ret = lgdt3306a_read_reg(state, 0x1036, &val); + val &= 0xF0; + val |= 0x0C; + ret = lgdt3306a_write_reg(state, 0x1036, val); + + // 11. Using the imaginary part of CIR in CIR loading + ret = lgdt3306a_read_reg(state, 0x211F, &val); + val &= 0xEF; //do not use imaginary of CIR + ret = lgdt3306a_write_reg(state, 0x211F, val); + + // 12. Control of no signal detector function + ret = lgdt3306a_read_reg(state, 0x2849, &val); + val &= 0xEF; //NOUSENOSIGDET=0, enable no signal detector + ret = lgdt3306a_write_reg(state, 0x2849, val); + + //FGR - put demod in some known mode + ret = lgdt3306a_set_vsb(state); + + // 13. TP stream format + ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); + + // 14. disable output buses + ret = lgdt3306a_mpeg_tristate(state, 1); + + // 15. Sleep (in reset) + ret = lgdt3306a_sleep(state); + lg_chkerr(ret); + +fail: + return ret; +} + +static int lgdt3306a_set_parameters(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct lgdt3306a_state *state = fe->demodulator_priv; + int ret; + + lg_dbg("(%d, %d)\n", p->frequency, p->modulation); + + if(state->current_frequency == p->frequency && + state->current_modulation == p->modulation ){ + lg_dbg(" (already set, skipping ...)\n"); + return 0; + } + state->current_frequency = -1; + state->current_modulation = -1; + + ret = lgdt3306a_power(state, 1); //power up + if (lg_chkerr(ret)) + goto fail; + + if (fe->ops.tuner_ops.set_params) { + ret = fe->ops.tuner_ops.set_params(fe); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); +// if (lg_chkerr(ret)) +// goto fail; +// state->current_frequency = p->frequency; + } + + ret = lgdt3306a_set_modulation(state, p); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_agc_setup(state, p); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_set_if(state, p); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_spectral_inversion(state, p, + state->cfg->spectral_inversion? 1 : 0); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_mpeg_mode_polarity(state, + state->cfg->tpclk_edge, + state->cfg->tpvalid_polarity); + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_mpeg_tristate(state, 0); //enable data bus + if (lg_chkerr(ret)) + goto fail; + + ret = lgdt3306a_soft_reset(state); + if (lg_chkerr(ret)) + goto fail; + +#ifdef DBG_DUMP + lgdt3306a_DumpAllRegs(state); +#endif + state->current_frequency = p->frequency; +fail: + return ret; +} + +static int lgdt3306a_get_frontend(struct dvb_frontend *fe) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + + lg_dbg("(%u, %d)\n", state->current_frequency, state->current_modulation); + + p->modulation = state->current_modulation; + p->frequency = state->current_frequency; + return 0; +} + +static enum dvbfe_algo lgdt3306a_get_frontend_algo(struct dvb_frontend *fe) +{ +#if 1 + return DVBFE_ALGO_CUSTOM; +#else + return DVBFE_ALGO_HW; +#endif +} + +/* ------------------------------------------------------------------------ */ +static void lgdt3306a_monitor_vsb(struct lgdt3306a_state *state) +{ + u8 val; + int ret; + u8 snrRef, maxPowerMan, nCombDet; + u16 fbDlyCir; + + ret = lgdt3306a_read_reg(state, 0x21A1, &val); + snrRef = val & 0x3F; + + ret = lgdt3306a_read_reg(state, 0x2185, &maxPowerMan); + + ret = lgdt3306a_read_reg(state, 0x2191, &val); + nCombDet = (val & 0x80) >> 7; + + ret = lgdt3306a_read_reg(state, 0x2180, &val); + fbDlyCir = (val & 0x03) << 8; + ret = lgdt3306a_read_reg(state, 0x2181, &val); + fbDlyCir |= val; + + lg_dbg("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n", + snrRef, maxPowerMan, nCombDet, fbDlyCir); + + //Carrier offset sub loop bandwidth + ret = lgdt3306a_read_reg(state, 0x1061, &val); + val &= 0xF8; + if ((snrRef > 18) && (maxPowerMan > 0x68) && (nCombDet == 0x01) && ((fbDlyCir == 0x03FF) || (fbDlyCir < 0x6C))) { + //SNR is over 18dB and no ghosting + val |= 0x00; //final bandwidth = 0 + } else { + val |= 0x04; //final bandwidth = 4 + } + ret = lgdt3306a_write_reg(state, 0x1061, val); + + // Adjust Notch Filter + ret = lgdt3306a_read_reg(state, 0x0024, &val); + val &= 0x0F; + if (nCombDet == 0){ // Turn on the Notch Filter + val |= 0x50; + } + ret = lgdt3306a_write_reg(state, 0x0024, val); + + //VSB Timing Recovery output normalization + ret = lgdt3306a_read_reg(state, 0x103D, &val); + val &= 0xCF; + val |= 0x20; + ret = lgdt3306a_write_reg(state, 0x103D, val); +} + +static LG3306_MODULATION lgdt3306a_check_oper_mode(struct lgdt3306a_state *state) +{ + u8 val = 0; + int ret; + + ret = lgdt3306a_read_reg(state, 0x0081, &val); + + if (val & 0x80) { + lg_dbg("VSB\n"); + return(LG3306_VSB); + } + else if (val & 0x08) { + ret = lgdt3306a_read_reg(state, 0x00A6, &val); + val = val >> 2; + if (val & 0x01) { + lg_dbg("QAM256\n"); + return(LG3306_QAM256); + } else { + lg_dbg("QAM64\n"); + return(LG3306_QAM64); + } + } + lg_warn("UNKNOWN\n"); + return(LG3306_UNKNOWN_MODE); +} + +static LG3306_LOCK_STATUS lgdt3306a_check_lock_status(struct lgdt3306a_state *state, + LG3306_LOCK_CHECK whatLock) +{ + u8 val = 0; + int ret; + LG3306_MODULATION modeOper; + LG3306_LOCK_STATUS lockStatus; + + modeOper = LG3306_UNKNOWN_MODE; + + switch (whatLock) + { + case LG3306_SYNC_LOCK : + { + ret = lgdt3306a_read_reg(state, 0x00A6, &val); + + if ((val & 0x80) == 0x80) + lockStatus = LG3306_LOCK; + else + lockStatus = LG3306_UNLOCK; + + lg_dbg("SYNC_LOCK=%x\n", lockStatus); + break; + } + case LG3306_AGC_LOCK : + { + ret = lgdt3306a_read_reg(state, 0x0080, &val); + + if ((val & 0x40) == 0x40) + lockStatus = LG3306_LOCK; + else + lockStatus = LG3306_UNLOCK; + + lg_dbg("AGC_LOCK=%x\n", lockStatus); + break; + } + case LG3306_TR_LOCK : + { + modeOper = lgdt3306a_check_oper_mode(state); + if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) + { + ret = lgdt3306a_read_reg(state, 0x1094, &val); + + if ((val & 0x80) == 0x80) + lockStatus = LG3306_LOCK; + else + lockStatus = LG3306_UNLOCK; + } + else + lockStatus = LG3306_UNKNOWN_LOCK; + + lg_dbg("TR_LOCK=%x\n", lockStatus); + break; + } + case LG3306_FEC_LOCK : + { + modeOper = lgdt3306a_check_oper_mode(state); + if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) + { + ret = lgdt3306a_read_reg(state, 0x0080, &val); + + if ((val & 0x10) == 0x10) + lockStatus = LG3306_LOCK; + else + lockStatus = LG3306_UNLOCK; + } + else + lockStatus = LG3306_UNKNOWN_LOCK; + + lg_dbg("FEC_LOCK=%x\n", lockStatus); + break; + } + + default : + lockStatus = LG3306_UNKNOWN_LOCK; + lg_warn("UNKNOWN whatLock=%d\n", whatLock); + break; + } + + return(lockStatus); +} + +static LG3306_NEVERLOCK_STATUS lgdt3306a_check_neverlock_status(struct lgdt3306a_state *state) +{ + u8 val = 0; + int ret; + LG3306_NEVERLOCK_STATUS lockStatus; + + ret = lgdt3306a_read_reg(state, 0x0080, &val); + lockStatus = (LG3306_NEVERLOCK_STATUS)(val & 0x03); + + lg_dbg("NeverLock=%d", lockStatus); + + return(lockStatus); +} + +static void lgdt3306a_pre_monitoring(struct lgdt3306a_state *state) +{ + u8 val = 0; + int ret; + u8 currChDiffACQ, snrRef, mainStrong, aiccrejStatus; + + //Channel variation + ret = lgdt3306a_read_reg(state, 0x21BC, &currChDiffACQ); + + //SNR of Frame sync + ret = lgdt3306a_read_reg(state, 0x21A1, &val); + snrRef = val & 0x3F; + + //Strong Main CIR + ret = lgdt3306a_read_reg(state, 0x2199, &val); + mainStrong = (val & 0x40) >> 6; + + ret = lgdt3306a_read_reg(state, 0x0090, &val); + aiccrejStatus = (val & 0xF0) >> 4; + + lg_dbg("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n", + snrRef, mainStrong, aiccrejStatus, currChDiffACQ); + +// if ((mainStrong == 0) && (currChDiffACQ > 0x70)) //Dynamic ghost exists + if (mainStrong == 0) + { + ret = lgdt3306a_read_reg(state, 0x2135, &val); + val &= 0x0F; + val |= 0xA0; + ret = lgdt3306a_write_reg(state, 0x2135, val); + + ret = lgdt3306a_read_reg(state, 0x2141, &val); + val &= 0x3F; + val |= 0x80; + ret = lgdt3306a_write_reg(state, 0x2141, val); + + ret = lgdt3306a_write_reg(state, 0x2122, 0x70); + } + else // Weak ghost or static channel + { + ret = lgdt3306a_read_reg(state, 0x2135, &val); + val &= 0x0F; + val |= 0x70; + ret = lgdt3306a_write_reg(state, 0x2135, val); + + ret = lgdt3306a_read_reg(state, 0x2141, &val); + val &= 0x3F; + val |= 0x40; + ret = lgdt3306a_write_reg(state, 0x2141, val); + + ret = lgdt3306a_write_reg(state, 0x2122, 0x40); + } + +} + +static LG3306_LOCK_STATUS lgdt3306a_sync_lock_poll(struct lgdt3306a_state *state) +{ + LG3306_LOCK_STATUS syncLockStatus = LG3306_UNLOCK; + int i; + + for (i = 0; i < 2; i++) { + msleep(30); + + syncLockStatus = lgdt3306a_check_lock_status(state, LG3306_SYNC_LOCK); + + if (syncLockStatus == LG3306_LOCK) { + lg_dbg("locked(%d)\n", i); + return(LG3306_LOCK); + } + } + lg_dbg("not locked\n"); + return(LG3306_UNLOCK); +} + +static LG3306_LOCK_STATUS lgdt3306a_fec_lock_poll(struct lgdt3306a_state *state) +{ + LG3306_LOCK_STATUS FECLockStatus = LG3306_UNLOCK; + int i; + + for (i = 0; i < 2; i++) { + msleep(30); + + FECLockStatus = lgdt3306a_check_lock_status(state, LG3306_FEC_LOCK); + + if (FECLockStatus == LG3306_LOCK) { + lg_dbg("locked(%d)\n", i); + return(FECLockStatus); + } + } + lg_dbg("not locked\n"); + return(FECLockStatus); +} + +static LG3306_NEVERLOCK_STATUS lgdt3306a_neverlock_poll(struct lgdt3306a_state *state) +{ + LG3306_NEVERLOCK_STATUS NLLockStatus = LG3306_NL_FAIL; + int i; + + for (i = 0; i < 5; i++){ + msleep(30); + + NLLockStatus = lgdt3306a_check_neverlock_status(state); + + if (NLLockStatus == LG3306_NL_LOCK) { + lg_dbg("NL_LOCK(%d)\n", i); + return(NLLockStatus); + } + } + lg_dbg("NLLockStatus=%d\n", NLLockStatus); + return(NLLockStatus); +} + +static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state) +{ + u8 val; + int ret; + + ret = lgdt3306a_read_reg(state, 0x00FA, &val); + + return(val); +} + +static u32 log10_x1000(u32 x) +{ + static u32 valx_x10[] = { 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100 }; + static u32 log10x_x1000[] = { 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000 }; + static u32 nelems = sizeof(valx_x10)/sizeof(valx_x10[0]); + u32 log_val = 0; + u32 i; + + if (x<=0) + return -1000000;//signal error + + if (x<10) { + while (x<10) { + x = x*10; + log_val--; + } + } else if (x==10) { + return 0; //log(1)=0 + } else { + while (x>=100) { + x = x/10; + log_val++; + } + } + log_val *= 1000; + + if (x==10) //was our input an exact multiple of 10 + return log_val; //don't need to interpolate + + //find our place on the log curve + for (i=1; i < nelems; i++){ + if (valx_x10[i] >= x) break; + } + + { + u32 diff_val = x - valx_x10[i-1]; + u32 step_val = valx_x10[i] - valx_x10[i-1]; + u32 step_log10 = log10x_x1000[i] - log10x_x1000[i-1]; + //do a linear interpolation to get in-between values + return log_val + log10x_x1000[i-1] + ((diff_val*step_log10)/step_val); + } +} + +static u32 lgdt3306a_calculate_snr_x100(struct lgdt3306a_state *state) +{ + u32 mse; /* Mean-Square Error */ + u32 pwr; /* Constelation power */ + u32 snr_x100; + + mse = (read_reg(state, 0x00EC) << 8) | + (read_reg(state, 0x00ED)); + pwr = (read_reg(state, 0x00E8) << 8) | + (read_reg(state, 0x00E9)); + + if (mse == 0) /* no signal */ + return 0; + + snr_x100 = log10_x1000((pwr*10000)/mse) - 3000; + lg_dbg("mse=%u, pwr=%u, snr_x100=%d\n", mse, pwr, snr_x100); + + return snr_x100; +} + +static LG3306_LOCK_STATUS lgdt3306a_vsb_lock_poll(struct lgdt3306a_state *state) +{ + u8 cnt = 0; + u8 packet_error; + u32 snr; + + while(1) { + if (lgdt3306a_sync_lock_poll(state) == LG3306_UNLOCK) { + lg_dbg("no sync lock!\n"); + return(LG3306_UNLOCK); + } else { + msleep(20); + lgdt3306a_pre_monitoring(state); + + packet_error = lgdt3306a_get_packet_error(state); + snr = lgdt3306a_calculate_snr_x100(state); + lg_dbg("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); + + if((snr < 1500) || (packet_error >= 0xff)) { + cnt++; + } else { + return(LG3306_LOCK); + } + + if(cnt >= 10) { + lg_dbg("not locked!\n"); + return(LG3306_UNLOCK); + } + } + } + return(LG3306_UNLOCK); +} + +static LG3306_LOCK_STATUS lgdt3306a_qam_lock_poll(struct lgdt3306a_state *state) +{ + u8 cnt = 0; + u8 packet_error; + u32 snr; + + while(1) { + if(lgdt3306a_fec_lock_poll(state) == LG3306_UNLOCK) { + lg_dbg("no fec lock!\n"); + return(LG3306_UNLOCK); + } else { + msleep(20); + + packet_error = lgdt3306a_get_packet_error(state); + snr = lgdt3306a_calculate_snr_x100(state); + lg_dbg("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); + + if((snr < 1500) || (packet_error >= 0xff)) { + cnt++; + } else { + return(LG3306_LOCK); + } + + if(cnt >= 10) { + lg_dbg("not locked!\n"); + return(LG3306_UNLOCK); + } + } + } + return(LG3306_UNLOCK); +} + +static int lgdt3306a_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + int ret = 0; + struct lgdt3306a_state *state = fe->demodulator_priv; + + u16 strength = 0; + if (fe->ops.tuner_ops.get_rf_strength) { + ret = fe->ops.tuner_ops.get_rf_strength(fe, &strength); + if (ret==0) { + lg_dbg("strength=%d\n", strength); + } else { + lg_dbg("fe->ops.tuner_ops.get_rf_strength() failed\n"); + } + } + + *status = 0; + if(lgdt3306a_neverlock_poll(state) == LG3306_NL_LOCK) { + *status |= FE_HAS_SIGNAL; + *status |= FE_HAS_CARRIER; + + switch (state->current_modulation) { + case QAM_256: + case QAM_64: + if(lgdt3306a_qam_lock_poll(state) == LG3306_LOCK){ + *status |= FE_HAS_VITERBI; + *status |= FE_HAS_SYNC; + + *status |= FE_HAS_LOCK; + } + break; + case VSB_8: + if(lgdt3306a_vsb_lock_poll(state) == LG3306_LOCK){ + *status |= FE_HAS_VITERBI; + *status |= FE_HAS_SYNC; + + *status |= FE_HAS_LOCK; + + lgdt3306a_monitor_vsb(state); + } + break; + default: + ret = -EINVAL; + } + } + return ret; +} + + +static int lgdt3306a_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + + state->snr = lgdt3306a_calculate_snr_x100(state); + /* report SNR in dB * 10 */ + *snr = state->snr/10; + + return 0; +} + +static int lgdt3306a_read_signal_strength(struct dvb_frontend *fe, + u16 *strength) +{ + /* + * Calculate some sort of "strength" from SNR + */ + struct lgdt3306a_state *state = fe->demodulator_priv; + u16 snr; //snr_x10 + int ret; + u32 ref_snr; //snr*100 + u32 str; + + *strength = 0; + + switch (state->current_modulation) { + case VSB_8: + ref_snr = 1600; //16dB + break; + case QAM_64: + ref_snr = 2200; //22dB + break; + case QAM_256: + ref_snr = 2800; //28dB + break; + default: + return -EINVAL; + } + + ret = fe->ops.read_snr(fe, &snr); + if (lg_chkerr(ret)) + goto fail; + + if(state->snr <= (ref_snr-100)) + str = 0; + else if(state->snr <= ref_snr) + str = (0xffff*65) / 100; //65% + else { + str = state->snr - ref_snr; + str /= 50; + str += 78; //78%-100% + if(str > 100) + str = 100; + str = (0xffff * str) / 100; + } + *strength = (u16)str; + lg_dbg("strength=%u\n", *strength); + +fail: + return ret; +} + +/* ------------------------------------------------------------------------ */ + +static int lgdt3306a_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + u32 tmp; + + *ber = 0; +#if 1 + //FGR - BUGBUG - I don't know what value is expected by dvb_core + // what is the scale of the value?? + tmp = read_reg(state, 0x00FC);//NBERVALUE[24-31] + tmp = (tmp<<8) | read_reg(state, 0x00FD);//NBERVALUE[16-23] + tmp = (tmp<<8) | read_reg(state, 0x00FE);//NBERVALUE[8-15] + tmp = (tmp<<8) | read_reg(state, 0x00FF);//NBERVALUE[0-7] + *ber = tmp; + lg_dbg("ber=%u\n", tmp); +#endif + return 0; +} + +static int lgdt3306a_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + + *ucblocks = 0; +#if 1 + //FGR - BUGBUG - I don't know what value is expected by dvb_core + // what happens when value wraps? + *ucblocks = read_reg(state, 0x00F4);//TPIFTPERRCNT[0-7] + lg_dbg("ucblocks=%u\n", *ucblocks); +#endif + + return 0; +} + +static int lgdt3306a_tune(struct dvb_frontend *fe, bool re_tune, unsigned int mode_flags, unsigned int *delay, fe_status_t *status) +{ + int ret = 0; + struct lgdt3306a_state *state = fe->demodulator_priv; + + lg_dbg("re_tune=%u\n", re_tune); + + if (re_tune) { + state->current_frequency = -1; //force re-tune + if ((ret = lgdt3306a_set_parameters(fe)) != 0) { + return ret; + } + } + *delay = 125; + ret = lgdt3306a_read_status(fe, status); + + return ret; +} + +static int lgdt3306a_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings + *fe_tune_settings) +{ + fe_tune_settings->min_delay_ms = 100; + lg_dbg("\n"); + return 0; +} + +static int lgdt3306a_search(struct dvb_frontend *fe) +{ + fe_status_t status = 0; + int i, ret; + + /* set frontend */ + ret = lgdt3306a_set_parameters(fe); + if (ret) + goto error; + + /* wait frontend lock */ + for (i = 20; i > 0; i--) { + lg_dbg(": loop=%d\n", i); + msleep(50); + ret = lgdt3306a_read_status(fe, &status); + if (ret) + goto error; + + if (status & FE_HAS_LOCK) + break; + } + + /* check if we have a valid signal */ + if (status & FE_HAS_LOCK) { + return DVBFE_ALGO_SEARCH_SUCCESS; + } else { + return DVBFE_ALGO_SEARCH_AGAIN; + } + +error: + lg_dbg("failed (%d)\n", ret); + return DVBFE_ALGO_SEARCH_ERROR; +} + +static void lgdt3306a_release(struct dvb_frontend *fe) +{ + struct lgdt3306a_state *state = fe->demodulator_priv; + lg_dbg("\n"); + kfree(state); +} + +static struct dvb_frontend_ops lgdt3306a_ops; + +struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, + struct i2c_adapter *i2c_adap) +{ + struct lgdt3306a_state *state = NULL; + int ret; + u8 val; + + lg_dbg("(%d-%04x)\n", + i2c_adap ? i2c_adapter_id(i2c_adap) : 0, + config ? config->i2c_addr : 0); + + state = kzalloc(sizeof(struct lgdt3306a_state), GFP_KERNEL); + if (state == NULL) + goto fail; + + state->cfg = config; + state->i2c_adap = i2c_adap; + + memcpy(&state->frontend.ops, &lgdt3306a_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + + /* verify that we're talking to a lg3306a */ + //FGR - NOTE - there is no obvious ChipId to check; we check + // some "known" bits after reset, but it's still just a guess + ret = lgdt3306a_read_reg(state, 0x0000, &val); + if (lg_chkerr(ret)) + goto fail; + if((val & 0x74) != 0x74){ + lg_warn("expected 0x74, got 0x%x\n", (val & 0x74)); +// goto fail; //BUGBUG - re-enable when we know this is right + } + ret = lgdt3306a_read_reg(state, 0x0001, &val); + if (lg_chkerr(ret)) + goto fail; + if((val & 0xF6) != 0xC6){ + lg_warn("expected 0xC6, got 0x%x\n", (val & 0xF6)); +// goto fail; //BUGBUG - re-enable when we know this is right + } + ret = lgdt3306a_read_reg(state, 0x0002, &val); + if (lg_chkerr(ret)) + goto fail; + if((val & 0x73) != 0x03){ + lg_warn("expected 0x03, got 0x%x\n", (val & 0x73)); +// goto fail; //BUGBUG - re-enable when we know this is right + } + + state->current_frequency = -1; + state->current_modulation = -1; + + lgdt3306a_sleep(state); + + return &state->frontend; + +fail: + lg_warn("unable to detect LGDT3306A hardware\n"); + kfree(state); + return NULL; +} + +#ifdef DBG_DUMP + +static const short regtab[] = { + 0x0000, //SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 + 0x0001, //1'b1 1'b1 1'b0 1'b0 AUTORPTRS + 0x0002, //NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT + 0x0003, //AGCRFOUT + 0x0004, //ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL + 0x0005, //PLLINDIVSE + 0x0006, //PLLCTRL[7:0] 11100001 + 0x0007, //SYSINITWAITTIME[7:0] (msec) 00001000 + 0x0008, //STDOPMODE[7:0] 10000000 + 0x0009, //1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 + 0x000A, //DAFTEN 1'b1 x x SCSYSLOCK + 0x000B, //SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 + 0x000D, //x SAMPLING4 + 0x000E, //SAMFREQ[15:8] 00000000 + 0x000F, //SAMFREQ[7:0] 00000000 + 0x0010, //IFFREQ[15:8] 01100000 + 0x0011, //IFFREQ[7:0] 00000000 + 0x0012, //AGCEN AGCREFMO + 0x0013, //AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 + 0x0014, //AGCFIXVALUE[7:0] 01111111 + 0x0015, //AGCREF[15:8] 00001010 + 0x0016, //AGCREF[7:0] 11100100 + 0x0017, //AGCDELAY[7:0] 00100000 + 0x0018, //AGCRFBW[3:0] AGCIFBW[3:0] 10001000 + 0x0019, //AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL + 0x001C, //1'b1 PFEN MFEN AICCVSYNC + 0x001D, //1'b0 1'b1 1'b0 1'b1 AICCVSYNC + 0x001E, //AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 + 0x001F, //AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 + 0x0020, //AICCDETTH[15:8] 01111100 + 0x0021, //AICCDETTH[7:0] 00000000 + 0x0022, //AICCOFFTH[15:8] 00000101 + 0x0023, //AICCOFFTH[7:0] 11100000 + 0x0024, //AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 + 0x0025, //AICCFIXFREQ3[23:16] 00000000 + 0x0026, //AICCFIXFREQ3[15:8] 00000000 + 0x0027, //AICCFIXFREQ3[7:0] 00000000 + 0x0028, //AICCFIXFREQ2[23:16] 00000000 + 0x0029, //AICCFIXFREQ2[15:8] 00000000 + 0x002A, //AICCFIXFREQ2[7:0] 00000000 + 0x002B, //AICCFIXFREQ1[23:16] 00000000 + 0x002C, //AICCFIXFREQ1[15:8] 00000000 + 0x002D, //AICCFIXFREQ1[7:0] 00000000 + 0x002E, //AICCFIXFREQ0[23:16] 00000000 + 0x002F, //AICCFIXFREQ0[15:8] 00000000 + 0x0030, //AICCFIXFREQ0[7:0] 00000000 + 0x0031, //1'b0 1'b1 1'b0 1'b0 x DAGC1STER + 0x0032, //DAGC1STEN DAGC1STER + 0x0033, //DAGC1STREF[15:8] 00001010 + 0x0034, //DAGC1STREF[7:0] 11100100 + 0x0035, //DAGC2NDE + 0x0036, //DAGC2NDREF[15:8] 00001010 + 0x0037, //DAGC2NDREF[7:0] 10000000 + 0x0038, //DAGC2NDLOCKDETRNGSEL[1:0] + 0x003D, //1'b1 SAMGEARS + 0x0040, //SAMLFGMA + 0x0041, //SAMLFBWM + 0x0044, //1'b1 CRGEARSHE + 0x0045, //CRLFGMAN + 0x0046, //CFLFBWMA + 0x0047, //CRLFGMAN + 0x0048, //x x x x CRLFGSTEP_VS[3:0] xxxx1001 + 0x0049, //CRLFBWMA + 0x004A, //CRLFBWMA + 0x0050, //1'b0 1'b1 1'b1 1'b0 MSECALCDA + 0x0070, //TPOUTEN TPIFEN TPCLKOUTE + 0x0071, //TPSENB TPSSOPBITE + 0x0073, //TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 + 0x0075, //x x x x x IQSWAPCTRL[2:0] xxxxx000 + 0x0076, //NBERCON NBERST NBERPOL NBERWSYN + 0x0077, //x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 + 0x0078, //NBERPOLY[31:24] 00000000 + 0x0079, //NBERPOLY[23:16] 00000000 + 0x007A, //NBERPOLY[15:8] 00000000 + 0x007B, //NBERPOLY[7:0] 00000000 + 0x007C, //NBERPED[31:24] 00000000 + 0x007D, //NBERPED[23:16] 00000000 + 0x007E, //NBERPED[15:8] 00000000 + 0x007F, //NBERPED[7:0] 00000000 + 0x0080, //x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] + 0x0085, //SPECINVST + 0x0088, //SYSLOCKTIME[15:8] + 0x0089, //SYSLOCKTIME[7:0] + 0x008C, //FECLOCKTIME[15:8] + 0x008D, //FECLOCKTIME[7:0] + 0x008E, //AGCACCOUT[15:8] + 0x008F, //AGCACCOUT[7:0] + 0x0090, //AICCREJSTATUS[3:0] AICCREJBUSY[3:0] + 0x0091, //AICCVSYNC + 0x009C, //CARRFREQOFFSET[15:8] + 0x009D, //CARRFREQOFFSET[7:0] + 0x00A1, //SAMFREQOFFSET[23:16] + 0x00A2, //SAMFREQOFFSET[15:8] + 0x00A3, //SAMFREQOFFSET[7:0] + 0x00A6, //SYNCLOCK SYNCLOCKH +#if 0//covered elsewhere + 0x00E8, //CONSTPWR[15:8] + 0x00E9, //CONSTPWR[7:0] + 0x00EA, //BMSE[15:8] + 0x00EB, //BMSE[7:0] + 0x00EC, //MSE[15:8] + 0x00ED, //MSE[7:0] + 0x00EE, //CONSTI[7:0] + 0x00EF, //CONSTQ[7:0] +#endif + 0x00F4, //TPIFTPERRCNT[7:0] + 0x00F5, //TPCORREC + 0x00F6, //VBBER[15:8] + 0x00F7, //VBBER[7:0] + 0x00F8, //VABER[15:8] + 0x00F9, //VABER[7:0] + 0x00FA, //TPERRCNT[7:0] + 0x00FB, //NBERLOCK x x x x x x x + 0x00FC, //NBERVALUE[31:24] + 0x00FD, //NBERVALUE[23:16] + 0x00FE, //NBERVALUE[15:8] + 0x00FF, //NBERVALUE[7:0] + 0x1000, //1'b0 WODAGCOU + 0x1005, //x x 1'b1 1'b1 x SRD_Q_QM + 0x1009, //SRDWAITTIME[7:0] (10msec) 00100011 + 0x100A, //SRDWAITTIME_CQS[7:0] (msec) 01100100 + 0x101A, //x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 + 0x1036, //1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 + 0x103C, //SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 + 0x103D, //1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 + 0x103F, //SAMZTEDSE + 0x105D, //EQSTATUSE + 0x105F, //x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 + 0x1060, //1'b1 EQSTATUSE + 0x1061, //CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 + 0x1065, //1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x + 0x1066, //1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE + 0x1068, //CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 + 0x106E, //x x x x x CREPHNEN_ + 0x106F, //CREPHNTH_V[7:0] 00010101 + 0x1072, //CRSWEEPN + 0x1073, //CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 + 0x1074, //CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 + 0x1080, //DAFTSTATUS[1:0] x x x x x x + 0x1081, //SRDSTATUS[1:0] x x x x x SRDLOCK + 0x10A9, //EQSTATUS_CQS[1:0] x x x x x x + 0x10B7, //EQSTATUS_V[1:0] x x x x x x +#if 0//SMART_ANT + 0x1F00, //MODEDETE + 0x1F01, //x x x x x x x SFNRST xxxxxxx0 + 0x1F03, //NUMOFANT[7:0] 10000000 + 0x1F04, //x SELMASK[6:0] x0000000 + 0x1F05, //x SETMASK[6:0] x0000000 + 0x1F06, //x TXDATA[6:0] x0000000 + 0x1F07, //x CHNUMBER[6:0] x0000000 + 0x1F09, //AGCTIME[23:16] 10011000 + 0x1F0A, //AGCTIME[15:8] 10010110 + 0x1F0B, //AGCTIME[7:0] 10000000 + 0x1F0C, //ANTTIME[31:24] 00000000 + 0x1F0D, //ANTTIME[23:16] 00000011 + 0x1F0E, //ANTTIME[15:8] 10010000 + 0x1F0F, //ANTTIME[7:0] 10010000 + 0x1F11, //SYNCTIME[23:16] 10011000 + 0x1F12, //SYNCTIME[15:8] 10010110 + 0x1F13, //SYNCTIME[7:0] 10000000 + 0x1F14, //SNRTIME[31:24] 00000001 + 0x1F15, //SNRTIME[23:16] 01111101 + 0x1F16, //SNRTIME[15:8] 01111000 + 0x1F17, //SNRTIME[7:0] 01000000 + 0x1F19, //FECTIME[23:16] 00000000 + 0x1F1A, //FECTIME[15:8] 01110010 + 0x1F1B, //FECTIME[7:0] 01110000 + 0x1F1D, //FECTHD[7:0] 00000011 + 0x1F1F, //SNRTHD[23:16] 00001000 + 0x1F20, //SNRTHD[15:8] 01111111 + 0x1F21, //SNRTHD[7:0] 10000101 + 0x1F80, //IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG + 0x1F81, //x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO + 0x1F82, //x x x SCANOPCD[4:0] + 0x1F83, //x x x x MAINOPCD[3:0] + 0x1F84, //x x RXDATA[13:8] + 0x1F85, //RXDATA[7:0] + 0x1F86, //x x SDTDATA[13:8] + 0x1F87, //SDTDATA[7:0] + 0x1F89, //ANTSNR[23:16] + 0x1F8A, //ANTSNR[15:8] + 0x1F8B, //ANTSNR[7:0] + 0x1F8C, //x x x x ANTFEC[13:8] + 0x1F8D, //ANTFEC[7:0] + 0x1F8E, //MAXCNT[7:0] + 0x1F8F, //SCANCNT[7:0] + 0x1F91, //MAXPW[23:16] + 0x1F92, //MAXPW[15:8] + 0x1F93, //MAXPW[7:0] + 0x1F95, //CURPWMSE[23:16] + 0x1F96, //CURPWMSE[15:8] + 0x1F97, //CURPWMSE[7:0] +#endif//SMART_ANT + 0x211F, //1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 + 0x212A, //EQAUTOST + 0x2122, //CHFAST[7:0] 01100000 + 0x212B, //FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 + 0x212C, //PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 + 0x212D, //1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS + 0x2135, //DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 + 0x2141, //TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 + 0x2162, //AICCCTRLE + 0x2173, //PHNCNFCNT[7:0] 00000100 + 0x2179, //1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 + 0x217A, //1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 + 0x217E, //CNFCNTTPIF[7:0] 00001000 + 0x217F, //TPERRCNTTPIF[7:0] 00000001 + 0x2180, //x x x x x x FBDLYCIR[9:8] + 0x2181, //FBDLYCIR[7:0] + 0x2185, //MAXPWRMAIN[7:0] + 0x2191, //NCOMBDET x x x x x x x + 0x2199, //x MAINSTRON + 0x219A, //FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] + 0x21A1, //x x SNRREF[5:0] + 0x2845, //1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 + 0x2846, //1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 + 0x2847, //ENNOSIGDE + 0x2849, //1'b1 1'b1 NOUSENOSI + 0x284A, //EQINITWAITTIME[7:0] 01100100 + 0x3000, //1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM + 0x3001, //RPTRSTWAITTIME[7:0] (100msec) 00110010 + 0x3031, //FRAMELOC + 0x3032, //1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 + 0x30A9, //VDLOCK_Q FRAMELOCK + 0x30AA, //MPEGLOCK +}; + +#define numDumpRegs (sizeof(regtab)/sizeof(regtab[0])) +static u8 regval1[numDumpRegs] = {0, }; +static u8 regval2[numDumpRegs] = {0, }; + +static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state) +{ + memset(regval2, 0xff, sizeof(regval2)); + lgdt3306a_DumpRegs(state); +} + +static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state) +{ + int i; + int sav_debug = debug; + if ((debug & DBG_DUMP) == 0) + return; + debug &= ~DBG_REG;//supress DBG_REG during reg dump + + lg_info("\n"); + + for(i=0; i"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.2"); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ diff --git a/drivers/media/dvb-frontends/lgdt3306a.h b/drivers/media/dvb-frontends/lgdt3306a.h new file mode 100644 index 000000000000..47e48d485eac --- /dev/null +++ b/drivers/media/dvb-frontends/lgdt3306a.h @@ -0,0 +1,80 @@ +/* + * Support for LGDT3306A - 8VSB/QAM-B + * + * Copyright (C) 2013,2014 Fred Richter + * based on lgdt3305.[ch] by Michael Krufky + * + * 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 _LGDT3306A_H_ +#define _LGDT3306A_H_ + +#include +#include "dvb_frontend.h" + + +enum lgdt3306a_mpeg_mode { + LGDT3306A_MPEG_PARALLEL = 0, + LGDT3306A_MPEG_SERIAL = 1, +}; + +enum lgdt3306a_tp_clock_edge { + LGDT3306A_TPCLK_RISING_EDGE = 0, + LGDT3306A_TPCLK_FALLING_EDGE = 1, +}; + +enum lgdt3306a_tp_valid_polarity { + LGDT3306A_TP_VALID_LOW = 0, + LGDT3306A_TP_VALID_HIGH = 1, +}; + +struct lgdt3306a_config { + u8 i2c_addr; + + /* user defined IF frequency in KHz */ + u16 qam_if_khz; + u16 vsb_if_khz; + + /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ + int deny_i2c_rptr:1; + + /* spectral inversion - 0:disabled 1:enabled */ + int spectral_inversion:1; + + enum lgdt3306a_mpeg_mode mpeg_mode; + enum lgdt3306a_tp_clock_edge tpclk_edge; + enum lgdt3306a_tp_valid_polarity tpvalid_polarity; + + int xtalMHz;//demod clock freq in MHz; 24 or 25 supported +}; + +#if defined(CONFIG_DVB_LGDT3306A) || (defined(CONFIG_DVB_LGDT3306A_MODULE) && \ + defined(MODULE)) +extern +struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, + struct i2c_adapter *i2c_adap); +#else +static inline +struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, + struct i2c_adapter *i2c_adap) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif /* CONFIG_DVB_LGDT3306A */ + +#endif /* _LGDT3306A_H_ */