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authorFred Richter <frichter@hauppauge.com>2014-03-24 19:56:00 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-03-03 10:34:08 -0300
commitb63b36fa44d0225de994a535307f941ca87fa908 (patch)
treedc22bc8914dc31dab4e4bed41375f99ee068d1f7
parente6d72d20519c5d4941ed91d03edadd133d277e08 (diff)
[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 <frichter@hauppauge.com> Signed-off-by: Michael Ira Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
-rw-r--r--drivers/media/dvb-frontends/Kconfig8
-rw-r--r--drivers/media/dvb-frontends/Makefile1
-rw-r--r--drivers/media/dvb-frontends/lgdt3306a.c2024
-rw-r--r--drivers/media/dvb-frontends/lgdt3306a.h80
4 files changed, 2113 insertions, 0 deletions
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 <frichter@hauppauge.com>
+ * - 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 <asm/div64.h>
+#include <linux/dvb/frontend.h>
+#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<numDumpRegs; i++){
+ lgdt3306a_read_reg(state, regtab[i], &regval1[i]);
+ if(regval1[i] != regval2[i]){
+ lg_info(" %04X = %02X\n", regtab[i], regval1[i]);
+ regval2[i] = regval1[i];
+ }
+ }
+ debug = sav_debug;
+}
+#endif//DBG_DUMP
+
+
+
+EXPORT_SYMBOL(lgdt3306a_attach);
+
+static struct dvb_frontend_ops lgdt3306a_ops = {
+ .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
+ .info = {
+ .name = "LG Electronics LGDT3306A VSB/QAM Frontend",
+// .type = FE_ATSC,
+ .frequency_min = 54000000,
+ .frequency_max = 858000000, //FGR - BUGBUG - why does the demod have a freq limit??
+ // also, it's too high for ATSC Ch 52, and too low for Ch 158 Cable
+ .frequency_stepsize = 62500,
+ .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
+ },
+ .i2c_gate_ctrl = lgdt3306a_i2c_gate_ctrl,
+ .init = lgdt3306a_init,
+ .sleep = lgdt3306a_fe_sleep,
+ /* if this is set, it overrides the default swzigzag */
+ .tune = lgdt3306a_tune,
+ .set_frontend = lgdt3306a_set_parameters,
+ .get_frontend = lgdt3306a_get_frontend,
+ .get_frontend_algo = lgdt3306a_get_frontend_algo,
+ .get_tune_settings = lgdt3306a_get_tune_settings,
+ .read_status = lgdt3306a_read_status,
+ .read_ber = lgdt3306a_read_ber,
+ .read_signal_strength = lgdt3306a_read_signal_strength,
+ .read_snr = lgdt3306a_read_snr,
+ .read_ucblocks = lgdt3306a_read_ucblocks,
+ .release = lgdt3306a_release,
+ .ts_bus_ctrl = lgdt3306a_ts_bus_ctrl,
+ .search = lgdt3306a_search,
+};
+
+MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver");
+MODULE_AUTHOR("Fred Richter <frichter@hauppauge.com>");
+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 <frichter@hauppauge.com>
+ * 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 <linux/i2c.h>
+#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_ */

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