6 files changed, 1289 insertions, 2 deletions

diff --git a/Documentation/dvb/get_dvb_firmware b/Documentation/dvb/get_dvb_firmware
index a750f0101d9d..be6eb4c75991 100644
--- a/Documentation/dvb/get_dvb_firmware
+++ b/Documentation/dvb/get_dvb_firmware
@@ -22,7 +22,7 @@ use File::Temp qw/ tempdir /;
 use IO::Handle;
 
 @components = ( "sp8870", "sp887x", "tda10045", "tda10046", "av7110", "dec2000t",
-                "dec2540t", "dec3000s", "vp7041", "dibusb", "nxt2002",
+                "dec2540t", "dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",
                 "or51211", "or51132_qam", "or51132_vsb");
 
 # Check args
@@ -252,6 +252,23 @@ sub nxt2002 {
     $outfile;
 }
 
+sub nxt2004 {
+    my $sourcefile = "AVerTVHD_MCE_A180_Drv_v1.2.2.16.zip";
+    my $url = "http://www.aver.com/support/Drivers/$sourcefile";
+    my $hash = "111cb885b1e009188346d72acfed024c";
+    my $outfile = "dvb-fe-nxt2004.fw";
+    my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
+
+    checkstandard();
+
+    wgetfile($sourcefile, $url);
+    unzip($sourcefile, $tmpdir);
+    verify("$tmpdir/3xHybrid.sys", $hash);
+    extract("$tmpdir/3xHybrid.sys", 465304, 9584, $outfile);
+
+    $outfile;
+}
+
 sub or51211 {
     my $fwfile = "dvb-fe-or51211.fw";
     my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index a50a41f6f79d..8e269e1c1f9d 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -164,6 +164,14 @@ config DVB_NXT2002
         help
           An ATSC 8VSB tuner module. Say Y when you want to support this frontend.
 
+config DVB_NXT200X
+        tristate "Nextwave NXT2002/NXT2004 based"
+        depends on DVB_CORE
+        select FW_LOADER
+        help
+          An ATSC 8VSB and QAM64/256 tuner module. Say Y when you want
+          to support this frontend.
+
 config DVB_OR51211
         tristate "or51211 based (pcHDTV HD2000 card)"
         depends on DVB_CORE
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index ad8658ffd60a..1692ee65ba5d 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_DVB_TDA80XX) += tda80xx.o
 obj-$(CONFIG_DVB_TDA10021) += tda10021.o
 obj-$(CONFIG_DVB_STV0297) += stv0297.o
 obj-$(CONFIG_DVB_NXT2002) += nxt2002.o
+obj-$(CONFIG_DVB_NXT2002) += nxt200x.o
 obj-$(CONFIG_DVB_OR51211) += or51211.o
 obj-$(CONFIG_DVB_OR51132) += or51132.o
 obj-$(CONFIG_DVB_BCM3510) += bcm3510.o
diff --git a/drivers/media/dvb/frontends/dvb-pll.c b/drivers/media/dvb/frontends/dvb-pll.c
index 6ba7433c2aa7..f857b869616c 100644
--- a/drivers/media/dvb/frontends/dvb-pll.c
+++ b/drivers/media/dvb/frontends/dvb-pll.c
@@ -314,7 +314,7 @@ EXPORT_SYMBOL(dvb_pll_tdhu2);
  */
 struct dvb_pll_desc dvb_pll_tuv1236d = {
         .name  = "Philips TUV1236D",
-        .min   =  57000000,
+        .min   =  54000000,
         .max   = 864000000,
         .count = 3,
         .entries = {
diff --git a/drivers/media/dvb/frontends/nxt200x.c b/drivers/media/dvb/frontends/nxt200x.c
new file mode 100644
index 000000000000..1d729be9b75c
--- /dev/null
+++ b/drivers/media/dvb/frontends/nxt200x.c
@@ -0,0 +1,1203 @@
+/*
+ *    Support for NXT2002 and NXT2004 - VSB/QAM
+ *
+ *    Copyright (C) 2005 Kirk Lapray (kirk.lapray@gmail.com)
+ *    based on nxt2002 by Taylor Jacob <rtjacob@earthlink.net>
+ *    and nxt2004 by Jean-Francois Thibert (jeanfrancois@sagetv.com)
+ *
+ *    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.
+ *
+*/
+
+/*
+ *                      NOTES ABOUT THIS DRIVER
+ *
+ * This Linux driver supports:
+ *   B2C2/BBTI Technisat Air2PC - ATSC (NXT2002)
+ *   AverTVHD MCE A180 (NXT2004)
+ *   ATI HDTV Wonder (NXT2004)
+ *
+ * This driver needs external firmware. Please use the command
+ * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2002" or
+ * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2004" to
+ * download/extract the appropriate firmware, and then copy it to
+ * /usr/lib/hotplug/firmware/ or /lib/firmware/
+ * (depending on configuration of firmware hotplug).
+ */
+#define NXT2002_DEFAULT_FIRMWARE "dvb-fe-nxt2002.fw"
+#define NXT2004_DEFAULT_FIRMWARE "dvb-fe-nxt2004.fw"
+#define CRC_CCIT_MASK 0x1021
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+
+#include "dvb_frontend.h"
+#include "dvb-pll.h"
+#include "nxt200x.h"
+
+struct nxt200x_state {
+
+        struct i2c_adapter* i2c;
+        struct dvb_frontend_ops ops;
+        const struct nxt200x_config* config;
+        struct dvb_frontend frontend;
+
+        /* demodulator private data */
+        nxt_chip_type demod_chip;
+        u8 initialised:1;
+};
+
+static int debug;
+#define dprintk(args...) \
+        do { \
+                if (debug) printk(KERN_DEBUG "nxt200x: " args); \
+        } while (0)
+
+static int i2c_writebytes (struct nxt200x_state* state, u8 addr, u8 *buf, u8 len)
+{
+        int err;
+        struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = len };
+
+        if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+                printk (KERN_WARNING "nxt200x: %s: i2c write error (addr 0x%02x, err == %i)\n",
+                        __FUNCTION__, addr, err);
+                return -EREMOTEIO;
+        }
+        return 0;
+}
+
+static u8 i2c_readbytes (struct nxt200x_state* state, u8 addr, u8* buf, u8 len)
+{
+        int err;
+        struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD, .buf = buf, .len = len };
+
+        if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+                printk (KERN_WARNING "nxt200x: %s: i2c read error (addr 0x%02x, err == %i)\n",
+                        __FUNCTION__, addr, err);
+                return -EREMOTEIO;
+        }
+        return 0;
+}
+
+static int nxt200x_writebytes (struct nxt200x_state* state, u8 reg, u8 *buf, u8 len)
+{
+        u8 buf2 [len+1];
+        int err;
+        struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf2, .len = len + 1 };
+
+        buf2[0] = reg;
+        memcpy(&buf2[1], buf, len);
+
+        if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+                printk (KERN_WARNING "nxt200x: %s: i2c write error (addr 0x%02x, err == %i)\n",
+                        __FUNCTION__, state->config->demod_address, err);
+                return -EREMOTEIO;
+        }
+        return 0;
+}
+
+static u8 nxt200x_readbytes (struct nxt200x_state* state, u8 reg, u8* buf, u8 len)
+{
+        u8 reg2 [] = { reg };
+
+        struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = reg2, .len = 1 },
+                        { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf, .len = len } };
+
+        int err;
+
+        if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) {
+                printk (KERN_WARNING "nxt200x: %s: i2c read error (addr 0x%02x, err == %i)\n",
+                        __FUNCTION__, state->config->demod_address, err);
+                return -EREMOTEIO;
+        }
+        return 0;
+}
+
+static u16 nxt200x_crc(u16 crc, u8 c)
+{
+        u8 i;
+        u16 input = (u16) c & 0xFF;
+
+        input<<=8;
+        for(i=0; i<8; i++) {
+                if((crc^input) & 0x8000)
+                        crc=(crc<<1)^CRC_CCIT_MASK;
+                else
+                        crc<<=1;
+                input<<=1;
+        }
+        return crc;
+}
+
+static int nxt200x_writereg_multibyte (struct nxt200x_state* state, u8 reg, u8* data, u8 len)
+{
+        u8 attr, len2, buf;
+        dprintk("%s\n", __FUNCTION__);
+
+        /* set mutli register register */
+        nxt200x_writebytes(state, 0x35, &reg, 1);
+
+        /* send the actual data */
+        nxt200x_writebytes(state, 0x36, data, len);
+
+        switch (state->demod_chip) {
+                case NXT2002:
+                        len2 = len;
+                        buf = 0x02;
+                        break;
+                case NXT2004:
+                        /* probably not right, but gives correct values */
+                        attr = 0x02;
+                        if (reg & 0x80) {
+                                attr = attr << 1;
+                                if (reg & 0x04)
+                                        attr = attr >> 1;
+                        }
+                        /* set write bit */
+                        len2 = ((attr << 4) | 0x10) | len;
+                        buf = 0x80;
+                        break;
+                default:
+                        return -EINVAL;
+                        break;
+        }
+
+        /* set multi register length */
+        nxt200x_writebytes(state, 0x34, &len2, 1);
+
+        /* toggle the multireg write bit */
+        nxt200x_writebytes(state, 0x21, &buf, 1);
+
+        nxt200x_readbytes(state, 0x21, &buf, 1);
+
+        switch (state->demod_chip) {
+                case NXT2002:
+                        if ((buf & 0x02) == 0)
+                                return 0;
+                        break;
+                case NXT2004:
+                        if (buf == 0)
+                                return 0;
+                        break;
+                default:
+                        return -EINVAL;
+                        break;
+        }
+
+        printk(KERN_WARNING "nxt200x: Error writing multireg register 0x%02X\n",reg);
+
+        return 0;
+}
+
+static int nxt200x_readreg_multibyte (struct nxt200x_state* state, u8 reg, u8* data, u8 len)
+{
+        int i;
+        u8 buf, len2, attr;
+        dprintk("%s\n", __FUNCTION__);
+
+        /* set mutli register register */
+        nxt200x_writebytes(state, 0x35, &reg, 1);
+
+        switch (state->demod_chip) {
+                case NXT2002:
+                        /* set multi register length */
+                        len2 = len & 0x80;
+                        nxt200x_writebytes(state, 0x34, &len2, 1);
+
+                        /* read the actual data */
+                        nxt200x_readbytes(state, reg, data, len);
+                        return 0;
+                        break;
+                case NXT2004:
+                        /* probably not right, but gives correct values */
+                        attr = 0x02;
+                        if (reg & 0x80) {
+                                attr = attr << 1;
+                                if (reg & 0x04)
+                                        attr = attr >> 1;
+                        }
+
+                        /* set multi register length */
+                        len2 = (attr << 4) | len;
+                        nxt200x_writebytes(state, 0x34, &len2, 1);
+
+                        /* toggle the multireg bit*/
+                        buf = 0x80;
+                        nxt200x_writebytes(state, 0x21, &buf, 1);
+
+                        /* read status */
+                        nxt200x_readbytes(state, 0x21, &buf, 1);
+
+                        if (buf == 0)
+                        {
+                                /* read the actual data */
+                                for(i = 0; i < len; i++) {
+                    nxt200x_readbytes(state, 0x36 + i, &data[i], 1);
+                                }
+                                return 0;
+                        }
+                        break;
+                default:
+                        return -EINVAL;
+                        break;
+        }
+
+        printk(KERN_WARNING "nxt200x: Error reading multireg register 0x%02X\n",reg);
+
+        return 0;
+}
+
+static void nxt200x_microcontroller_stop (struct nxt200x_state* state)
+{
+        u8 buf, stopval, counter = 0;
+        dprintk("%s\n", __FUNCTION__);
+
+        /* set correct stop value */
+        switch (state->demod_chip) {
+                case NXT2002:
+                        stopval = 0x40;
+                        break;
+                case NXT2004:
+                        stopval = 0x10;
+                        break;
+                default:
+                        stopval = 0;
+                        break;
+        }
+
+        buf = 0x80;
+        nxt200x_writebytes(state, 0x22, &buf, 1);
+
+        while (counter < 20) {
+                nxt200x_readbytes(state, 0x31, &buf, 1);
+                if (buf & stopval)
+                        return;
+                msleep(10);
+                counter++;
+        }
+
+        printk(KERN_WARNING "nxt200x: Timeout waiting for nxt200x to stop. This is ok after firmware upload.\n");
+        return;
+}
+
+static void nxt200x_microcontroller_start (struct nxt200x_state* state)
+{
+        u8 buf;
+        dprintk("%s\n", __FUNCTION__);
+
+        buf = 0x00;
+        nxt200x_writebytes(state, 0x22, &buf, 1);
+}
+
+static void nxt2004_microcontroller_init (struct nxt200x_state* state)
+{
+        u8 buf[9];
+        u8 counter = 0;
+        dprintk("%s\n", __FUNCTION__);
+
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0x2b, buf, 1);
+        buf[0] = 0x70;
+        nxt200x_writebytes(state, 0x34, buf, 1);
+        buf[0] = 0x04;
+        nxt200x_writebytes(state, 0x35, buf, 1);
+        buf[0] = 0x01; buf[1] = 0x23; buf[2] = 0x45; buf[3] = 0x67; buf[4] = 0x89;
+        buf[5] = 0xAB; buf[6] = 0xCD; buf[7] = 0xEF; buf[8] = 0xC0;
+        nxt200x_writebytes(state, 0x36, buf, 9);
+        buf[0] = 0x80;
+        nxt200x_writebytes(state, 0x21, buf, 1);
+
+        while (counter < 20) {
+                nxt200x_readbytes(state, 0x21, buf, 1);
+                if (buf[0] == 0)
+                        return;
+                msleep(10);
+                counter++;
+        }
+
+        printk(KERN_WARNING "nxt200x: Timeout waiting for nxt2004 to init.\n");
+
+        return;
+}
+
+static int nxt200x_writetuner (struct nxt200x_state* state, u8* data)
+{
+        u8 buf, count = 0;
+
+        dprintk("%s\n", __FUNCTION__);
+
+        dprintk("Tuner Bytes: %02X %02X %02X %02X\n", data[0], data[1], data[2], data[3]);
+
+        /* if pll is a Philips TUV1236D then write directly to tuner */
+        if (strcmp(state->config->pll_desc->name, "Philips TUV1236D") == 0) {
+                if (i2c_writebytes(state, state->config->pll_address, data, 4))
+                        printk(KERN_WARNING "nxt200x: error writing to tuner\n");
+                /* wait until we have a lock */
+                while (count < 20) {
+                        i2c_readbytes(state, state->config->pll_address, &buf, 1);
+                        if (buf & 0x40)
+                                return 0;
+                        msleep(100);
+                        count++;
+                }
+                printk("nxt200x: timeout waiting for tuner lock\n");
+                return 0;
+        } else {
+                /* set the i2c transfer speed to the tuner */
+                buf = 0x03;
+                nxt200x_writebytes(state, 0x20, &buf, 1);
+
+                /* setup to transfer 4 bytes via i2c */
+                buf = 0x04;
+                nxt200x_writebytes(state, 0x34, &buf, 1);
+
+                /* write actual tuner bytes */
+                nxt200x_writebytes(state, 0x36, data, 4);
+
+                /* set tuner i2c address */
+                buf = state->config->pll_address;
+                nxt200x_writebytes(state, 0x35, &buf, 1);
+
+                /* write UC Opmode to begin transfer */
+                buf = 0x80;
+                nxt200x_writebytes(state, 0x21, &buf, 1);
+
+                while (count < 20) {
+                        nxt200x_readbytes(state, 0x21, &buf, 1);
+                        if ((buf & 0x80)== 0x00)
+                                return 0;
+                        msleep(100);
+                        count++;
+                }
+                printk("nxt200x: timeout error writing tuner\n");
+                return 0;
+        }
+}
+
+static void nxt200x_agc_reset(struct nxt200x_state* state)
+{
+        u8 buf;
+        dprintk("%s\n", __FUNCTION__);
+
+        switch (state->demod_chip) {
+                case NXT2002:
+                        buf = 0x08;
+                        nxt200x_writebytes(state, 0x08, &buf, 1);
+                        buf = 0x00;
+                        nxt200x_writebytes(state, 0x08, &buf, 1);
+                        break;
+                case NXT2004:
+                        nxt200x_readreg_multibyte(state, 0x08, &buf, 1);
+                        buf = 0x08;
+                        nxt200x_writereg_multibyte(state, 0x08, &buf, 1);
+                        buf = 0x00;
+                        nxt200x_writereg_multibyte(state, 0x08, &buf, 1);
+                        break;
+                default:
+                        break;
+        }
+        return;
+}
+
+static int nxt2002_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
+{
+
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 buf[3], written = 0, chunkpos = 0;
+        u16 rambase, position, crc = 0;
+
+        dprintk("%s\n", __FUNCTION__);
+        dprintk("Firmware is %zu bytes\n", fw->size);
+
+        /* Get the RAM base for this nxt2002 */
+        nxt200x_readbytes(state, 0x10, buf, 1);
+
+        if (buf[0] & 0x10)
+                rambase = 0x1000;
+        else
+                rambase = 0x0000;
+
+        dprintk("rambase on this nxt2002 is %04X\n", rambase);
+
+        /* Hold the micro in reset while loading firmware */
+        buf[0] = 0x80;
+        nxt200x_writebytes(state, 0x2B, buf, 1);
+
+        for (position = 0; position < fw->size; position++) {
+                if (written == 0) {
+                        crc = 0;
+                        chunkpos = 0x28;
+                        buf[0] = ((rambase + position) >> 8);
+                        buf[1] = (rambase + position) & 0xFF;
+                        buf[2] = 0x81;
+                        /* write starting address */
+                        nxt200x_writebytes(state, 0x29, buf, 3);
+                }
+                written++;
+                chunkpos++;
+
+                if ((written % 4) == 0)
+                        nxt200x_writebytes(state, chunkpos, &fw->data[position-3], 4);
+
+                crc = nxt200x_crc(crc, fw->data[position]);
+
+                if ((written == 255) || (position+1 == fw->size)) {
+                        /* write remaining bytes of firmware */
+                        nxt200x_writebytes(state, chunkpos+4-(written %4),
+                                &fw->data[position-(written %4) + 1],
+                                written %4);
+                        buf[0] = crc << 8;
+                        buf[1] = crc & 0xFF;
+
+                        /* write crc */
+                        nxt200x_writebytes(state, 0x2C, buf, 2);
+
+                        /* do a read to stop things */
+                        nxt200x_readbytes(state, 0x2A, buf, 1);
+
+                        /* set transfer mode to complete */
+                        buf[0] = 0x80;
+                        nxt200x_writebytes(state, 0x2B, buf, 1);
+
+                        written = 0;
+                }
+        }
+
+        return 0;
+};
+
+static int nxt2004_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
+{
+
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 buf[3];
+        u16 rambase, position, crc=0;
+
+        dprintk("%s\n", __FUNCTION__);
+        dprintk("Firmware is %zu bytes\n", fw->size);
+
+        /* set rambase */
+        rambase = 0x1000;
+
+        /* hold the micro in reset while loading firmware */
+        buf[0] = 0x80;
+        nxt200x_writebytes(state, 0x2B, buf,1);
+
+        /* calculate firmware CRC */
+        for (position = 0; position < fw->size; position++) {
+                crc = nxt200x_crc(crc, fw->data[position]);
+        }
+
+        buf[0] = rambase >> 8;
+        buf[1] = rambase & 0xFF;
+        buf[2] = 0x81;
+        /* write starting address */
+        nxt200x_writebytes(state,0x29,buf,3);
+
+        for (position = 0; position < fw->size;) {
+                nxt200x_writebytes(state, 0x2C, &fw->data[position],
+                        fw->size-position > 255 ? 255 : fw->size-position);
+                position += (fw->size-position > 255 ? 255 : fw->size-position);
+        }
+        buf[0] = crc >> 8;
+        buf[1] = crc & 0xFF;
+
+        dprintk("firmware crc is 0x%02X 0x%02X\n", buf[0], buf[1]);
+
+        /* write crc */
+        nxt200x_writebytes(state, 0x2C, buf,2);
+
+        /* do a read to stop things */
+        nxt200x_readbytes(state, 0x2C, buf, 1);
+
+        /* set transfer mode to complete */
+        buf[0] = 0x80;
+        nxt200x_writebytes(state, 0x2B, buf,1);
+
+        return 0;
+};
+
+static int nxt200x_setup_frontend_parameters (struct dvb_frontend* fe,
+                                             struct dvb_frontend_parameters *p)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 buf[4];
+
+        /* stop the micro first */
+        nxt200x_microcontroller_stop(state);
+
+        if (state->demod_chip == NXT2004) {
+                /* make sure demod is set to digital */
+                buf[0] = 0x04;
+                nxt200x_writebytes(state, 0x14, buf, 1);
+                buf[0] = 0x00;
+                nxt200x_writebytes(state, 0x17, buf, 1);
+        }
+
+        /* get tuning information */
+        dvb_pll_configure(state->config->pll_desc, buf, p->frequency, 0);
+
+        /* set additional params */
+        switch (p->u.vsb.modulation) {
+                case QAM_64:
+                case QAM_256:
+                        /* Set punctured clock for QAM */
+                        /* This is just a guess since I am unable to test it */
+                        state->config->set_ts_params(fe, 1);
+
+                        /* set to use cable input */
+                        buf[3] |= 0x08;
+                        break;
+                case VSB_8:
+                        /* Set non-punctured clock for VSB */
+                        state->config->set_ts_params(fe, 0);
+                        break;
+                default:
+                        return -EINVAL;
+                        break;
+        }
+
+        /* write frequency information */
+        nxt200x_writetuner(state, buf);
+
+        /* reset the agc now that tuning has been completed */
+        nxt200x_agc_reset(state);
+
+        /* set target power level */
+        switch (p->u.vsb.modulation) {
+                case QAM_64:
+                case QAM_256:
+                        buf[0] = 0x74;
+                        break;
+                case VSB_8:
+                        buf[0] = 0x70;
+                        break;
+                default:
+                        return -EINVAL;
+                        break;
+        }
+        nxt200x_writebytes(state, 0x42, buf, 1);
+
+        /* configure sdm */
+        switch (state->demod_chip) {
+                case NXT2002:
+                        buf[0] = 0x87;
+                        break;
+                case NXT2004:
+                        buf[0] = 0x07;
+                        break;
+                default:
+                        return -EINVAL;
+                        break;
+        }
+        nxt200x_writebytes(state, 0x57, buf, 1);
+
+        /* write sdm1 input */
+        buf[0] = 0x10;
+        buf[1] = 0x00;
+        nxt200x_writebytes(state, 0x58, buf, 2);
+
+        /* write sdmx input */
+        switch (p->u.vsb.modulation) {
+                case QAM_64:
+                                buf[0] = 0x68;
+                                break;
+                case QAM_256:
+                                buf[0] = 0x64;
+                                break;
+                case VSB_8:
+                                buf[0] = 0x60;
+                                break;
+                default:
+                                return -EINVAL;
+                                break;
+        }
+        buf[1] = 0x00;
+        nxt200x_writebytes(state, 0x5C, buf, 2);
+
+        /* write adc power lpf fc */
+        buf[0] = 0x05;
+        nxt200x_writebytes(state, 0x43, buf, 1);
+
+        if (state->demod_chip == NXT2004) {
+                /* write ??? */
+                buf[0] = 0x00;
+                buf[1] = 0x00;
+                nxt200x_writebytes(state, 0x46, buf, 2);
+        }
+
+        /* write accumulator2 input */
+        buf[0] = 0x80;
+        buf[1] = 0x00;
+        nxt200x_writebytes(state, 0x4B, buf, 2);
+
+        /* write kg1 */
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0x4D, buf, 1);
+
+        /* write sdm12 lpf fc */
+        buf[0] = 0x44;
+        nxt200x_writebytes(state, 0x55, buf, 1);
+
+        /* write agc control reg */
+        buf[0] = 0x04;
+        nxt200x_writebytes(state, 0x41, buf, 1);
+
+        if (state->demod_chip == NXT2004) {
+                nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+                buf[0] = 0x24;
+                nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+
+                /* soft reset? */
+                nxt200x_readreg_multibyte(state, 0x08, buf, 1);
+                buf[0] = 0x10;
+                nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+                nxt200x_readreg_multibyte(state, 0x08, buf, 1);
+                buf[0] = 0x00;
+                nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+
+                nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+                buf[0] = 0x04;
+                nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+                buf[0] = 0x00;
+                nxt200x_writereg_multibyte(state, 0x81, buf, 1);
+                buf[0] = 0x80; buf[1] = 0x00; buf[2] = 0x00;
+                nxt200x_writereg_multibyte(state, 0x82, buf, 3);
+                nxt200x_readreg_multibyte(state, 0x88, buf, 1);
+                buf[0] = 0x11;
+                nxt200x_writereg_multibyte(state, 0x88, buf, 1);
+                nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+                buf[0] = 0x44;
+                nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+        }
+
+        /* write agc ucgp0 */
+        switch (p->u.vsb.modulation) {
+                case QAM_64:
+                                buf[0] = 0x02;
+                                break;
+                case QAM_256:
+                                buf[0] = 0x03;
+                                break;
+                case VSB_8:
+                                buf[0] = 0x00;
+                                break;
+                default:
+                                return -EINVAL;
+                                break;
+        }
+        nxt200x_writebytes(state, 0x30, buf, 1);
+
+        /* write agc control reg */
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0x41, buf, 1);
+
+        /* write accumulator2 input */
+        buf[0] = 0x80;
+        buf[1] = 0x00;
+        nxt200x_writebytes(state, 0x49, buf,2);
+        nxt200x_writebytes(state, 0x4B, buf,2);
+
+        /* write agc control reg */
+        buf[0] = 0x04;
+        nxt200x_writebytes(state, 0x41, buf, 1);
+
+        nxt200x_microcontroller_start(state);
+
+        if (state->demod_chip == NXT2004) {
+                nxt2004_microcontroller_init(state);
+
+                /* ???? */
+                buf[0] = 0xF0;
+                buf[1] = 0x00;
+                nxt200x_writebytes(state, 0x5C, buf, 2);
+        }
+
+        /* adjacent channel detection should be done here, but I don't
+        have any stations with this need so I cannot test it */
+
+        return 0;
+}
+
+static int nxt200x_read_status(struct dvb_frontend* fe, fe_status_t* status)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 lock;
+        nxt200x_readbytes(state, 0x31, &lock, 1);
+
+        *status = 0;
+        if (lock & 0x20) {
+                *status |= FE_HAS_SIGNAL;
+                *status |= FE_HAS_CARRIER;
+                *status |= FE_HAS_VITERBI;
+                *status |= FE_HAS_SYNC;
+                *status |= FE_HAS_LOCK;
+        }
+        return 0;
+}
+
+static int nxt200x_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 b[3];
+
+        nxt200x_readreg_multibyte(state, 0xE6, b, 3);
+
+        *ber = ((b[0] << 8) + b[1]) * 8;
+
+        return 0;
+}
+
+static int nxt200x_read_signal_strength(struct dvb_frontend* fe, u16* strength)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 b[2];
+        u16 temp = 0;
+
+        /* setup to read cluster variance */
+        b[0] = 0x00;
+        nxt200x_writebytes(state, 0xA1, b, 1);
+
+        /* get multreg val */
+        nxt200x_readreg_multibyte(state, 0xA6, b, 2);
+
+        temp = (b[0] << 8) | b[1];
+        *strength = ((0x7FFF - temp) & 0x0FFF) * 16;
+
+        return 0;
+}
+
+static int nxt200x_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 b[2];
+        u16 temp = 0, temp2;
+        u32 snrdb = 0;
+
+        /* setup to read cluster variance */
+        b[0] = 0x00;
+        nxt200x_writebytes(state, 0xA1, b, 1);
+
+        /* get multreg val from 0xA6 */
+        nxt200x_readreg_multibyte(state, 0xA6, b, 2);
+
+        temp = (b[0] << 8) | b[1];
+        temp2 = 0x7FFF - temp;
+
+        /* snr will be in db */
+        if (temp2 > 0x7F00)
+                snrdb = 1000*24 + ( 1000*(30-24) * ( temp2 - 0x7F00 ) / ( 0x7FFF - 0x7F00 ) );
+        else if (temp2 > 0x7EC0)
+                snrdb = 1000*18 + ( 1000*(24-18) * ( temp2 - 0x7EC0 ) / ( 0x7F00 - 0x7EC0 ) );
+        else if (temp2 > 0x7C00)
+                snrdb = 1000*12 + ( 1000*(18-12) * ( temp2 - 0x7C00 ) / ( 0x7EC0 - 0x7C00 ) );
+        else
+                snrdb = 1000*0 + ( 1000*(12-0) * ( temp2 - 0 ) / ( 0x7C00 - 0 ) );
+
+        /* the value reported back from the frontend will be FFFF=32db 0000=0db */
+        *snr = snrdb * (0xFFFF/32000);
+
+        return 0;
+}
+
+static int nxt200x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        u8 b[3];
+
+        nxt200x_readreg_multibyte(state, 0xE6, b, 3);
+        *ucblocks = b[2];
+
+        return 0;
+}
+
+static int nxt200x_sleep(struct dvb_frontend* fe)
+{
+        return 0;
+}
+
+static int nxt2002_init(struct dvb_frontend* fe)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        const struct firmware *fw;
+        int ret;
+        u8 buf[2];
+
+        /* request the firmware, this will block until someone uploads it */
+        printk("nxt2002: Waiting for firmware upload (%s)...\n", NXT2002_DEFAULT_FIRMWARE);
+        ret = request_firmware(&fw, NXT2002_DEFAULT_FIRMWARE, &state->i2c->dev);
+        printk("nxt2002: Waiting for firmware upload(2)...\n");
+        if (ret) {
+                printk("nxt2002: No firmware uploaded (timeout or file not found?)\n");
+                return ret;
+        }
+
+        ret = nxt2002_load_firmware(fe, fw);
+        if (ret) {
+                printk("nxt2002: Writing firmware to device failed\n");
+                release_firmware(fw);
+                return ret;
+        }
+        printk("nxt2002: Firmware upload complete\n");
+
+        /* Put the micro into reset */
+        nxt200x_microcontroller_stop(state);
+
+        /* ensure transfer is complete */
+        buf[0]=0x00;
+        nxt200x_writebytes(state, 0x2B, buf, 1);
+
+        /* Put the micro into reset for real this time */
+        nxt200x_microcontroller_stop(state);
+
+        /* soft reset everything (agc,frontend,eq,fec)*/
+        buf[0] = 0x0F;
+        nxt200x_writebytes(state, 0x08, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0x08, buf, 1);
+
+        /* write agc sdm configure */
+        buf[0] = 0xF1;
+        nxt200x_writebytes(state, 0x57, buf, 1);
+
+        /* write mod output format */
+        buf[0] = 0x20;
+        nxt200x_writebytes(state, 0x09, buf, 1);
+
+        /* write fec mpeg mode */
+        buf[0] = 0x7E;
+        buf[1] = 0x00;
+        nxt200x_writebytes(state, 0xE9, buf, 2);
+
+        /* write mux selection */
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0xCC, buf, 1);
+
+        return 0;
+}
+
+static int nxt2004_init(struct dvb_frontend* fe)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        const struct firmware *fw;
+        int ret;
+        u8 buf[3];
+
+        /* ??? */
+        buf[0]=0x00;
+        nxt200x_writebytes(state, 0x1E, buf, 1);
+
+        /* request the firmware, this will block until someone uploads it */
+        printk("nxt2004: Waiting for firmware upload (%s)...\n", NXT2004_DEFAULT_FIRMWARE);
+        ret = request_firmware(&fw, NXT2004_DEFAULT_FIRMWARE, &state->i2c->dev);
+        printk("nxt2004: Waiting for firmware upload(2)...\n");
+        if (ret) {
+                printk("nxt2004: No firmware uploaded (timeout or file not found?)\n");
+                return ret;
+        }
+
+        ret = nxt2004_load_firmware(fe, fw);
+        if (ret) {
+                printk("nxt2004: Writing firmware to device failed\n");
+                release_firmware(fw);
+                return ret;
+        }
+        printk("nxt2004: Firmware upload complete\n");
+
+        /* ensure transfer is complete */
+        buf[0] = 0x01;
+        nxt200x_writebytes(state, 0x19, buf, 1);
+
+        nxt2004_microcontroller_init(state);
+        nxt200x_microcontroller_stop(state);
+        nxt200x_microcontroller_stop(state);
+        nxt2004_microcontroller_init(state);
+        nxt200x_microcontroller_stop(state);
+
+        /* soft reset everything (agc,frontend,eq,fec)*/
+        buf[0] = 0xFF;
+        nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+
+        /* write agc sdm configure */
+        buf[0] = 0xD7;
+        nxt200x_writebytes(state, 0x57, buf, 1);
+
+        /* ???*/
+        buf[0] = 0x07;
+        buf[1] = 0xfe;
+        nxt200x_writebytes(state, 0x35, buf, 2);
+        buf[0] = 0x12;
+        nxt200x_writebytes(state, 0x34, buf, 1);
+        buf[0] = 0x80;
+        nxt200x_writebytes(state, 0x21, buf, 1);
+
+        /* ???*/
+        buf[0] = 0x21;
+        nxt200x_writebytes(state, 0x0A, buf, 1);
+
+        /* ???*/
+        buf[0] = 0x01;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+
+        /* write fec mpeg mode */
+        buf[0] = 0x7E;
+        buf[1] = 0x00;
+        nxt200x_writebytes(state, 0xE9, buf, 2);
+
+        /* write mux selection */
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0xCC, buf, 1);
+
+        /* ???*/
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+
+        /* soft reset? */
+        nxt200x_readreg_multibyte(state, 0x08, buf, 1);
+        buf[0] = 0x10;
+        nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+        nxt200x_readreg_multibyte(state, 0x08, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+
+        /* ???*/
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x01;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x70;
+        nxt200x_writereg_multibyte(state, 0x81, buf, 1);
+        buf[0] = 0x31; buf[1] = 0x5E; buf[2] = 0x66;
+        nxt200x_writereg_multibyte(state, 0x82, buf, 3);
+
+        nxt200x_readreg_multibyte(state, 0x88, buf, 1);
+        buf[0] = 0x11;
+        nxt200x_writereg_multibyte(state, 0x88, buf, 1);
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x40;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+
+        nxt200x_readbytes(state, 0x10, buf, 1);
+        buf[0] = 0x10;
+        nxt200x_writebytes(state, 0x10, buf, 1);
+        nxt200x_readbytes(state, 0x0A, buf, 1);
+        buf[0] = 0x21;
+        nxt200x_writebytes(state, 0x0A, buf, 1);
+
+        nxt2004_microcontroller_init(state);
+
+        buf[0] = 0x21;
+        nxt200x_writebytes(state, 0x0A, buf, 1);
+        buf[0] = 0x7E;
+        nxt200x_writebytes(state, 0xE9, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0xEA, buf, 1);
+
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+
+        /* soft reset? */
+        nxt200x_readreg_multibyte(state, 0x08, buf, 1);
+        buf[0] = 0x10;
+        nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+        nxt200x_readreg_multibyte(state, 0x08, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x08, buf, 1);
+
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x04;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x81, buf, 1);
+        buf[0] = 0x80; buf[1] = 0x00; buf[2] = 0x00;
+        nxt200x_writereg_multibyte(state, 0x82, buf, 3);
+
+        nxt200x_readreg_multibyte(state, 0x88, buf, 1);
+        buf[0] = 0x11;
+        nxt200x_writereg_multibyte(state, 0x88, buf, 1);
+
+        nxt200x_readreg_multibyte(state, 0x80, buf, 1);
+        buf[0] = 0x44;
+        nxt200x_writereg_multibyte(state, 0x80, buf, 1);
+
+        /* initialize tuner */
+        nxt200x_readbytes(state, 0x10, buf, 1);
+        buf[0] = 0x12;
+        nxt200x_writebytes(state, 0x10, buf, 1);
+        buf[0] = 0x04;
+        nxt200x_writebytes(state, 0x13, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0x16, buf, 1);
+        buf[0] = 0x04;
+        nxt200x_writebytes(state, 0x14, buf, 1);
+        buf[0] = 0x00;
+        nxt200x_writebytes(state, 0x14, buf, 1);
+        nxt200x_writebytes(state, 0x17, buf, 1);
+        nxt200x_writebytes(state, 0x14, buf, 1);
+        nxt200x_writebytes(state, 0x17, buf, 1);
+
+        return 0;
+}
+
+static int nxt200x_init(struct dvb_frontend* fe)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        int ret = 0;
+
+        if (!state->initialised) {
+                switch (state->demod_chip) {
+                        case NXT2002:
+                                ret = nxt2002_init(fe);
+                                break;
+                        case NXT2004:
+                                ret = nxt2004_init(fe);
+                                break;
+                        default:
+                                return -EINVAL;
+                                break;
+                }
+                state->initialised = 1;
+        }
+        return ret;
+}
+
+static int nxt200x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
+{
+        fesettings->min_delay_ms = 500;
+        fesettings->step_size = 0;
+        fesettings->max_drift = 0;
+        return 0;
+}
+
+static void nxt200x_release(struct dvb_frontend* fe)
+{
+        struct nxt200x_state* state = fe->demodulator_priv;
+        kfree(state);
+}
+
+static struct dvb_frontend_ops nxt200x_ops;
+
+struct dvb_frontend* nxt200x_attach(const struct nxt200x_config* config,
+                                   struct i2c_adapter* i2c)
+{
+        struct nxt200x_state* state = NULL;
+        u8 buf [] = {0,0,0,0,0};
+
+        /* allocate memory for the internal state */
+        state = (struct nxt200x_state*) kmalloc(sizeof(struct nxt200x_state), GFP_KERNEL);
+        if (state == NULL)
+                goto error;
+        memset(state,0,sizeof(*state));
+
+        /* setup the state */
+        state->config = config;
+        state->i2c = i2c;
+        memcpy(&state->ops, &nxt200x_ops, sizeof(struct dvb_frontend_ops));
+        state->initialised = 0;
+
+        /* read card id */
+        nxt200x_readbytes(state, 0x00, buf, 5);
+        dprintk("NXT info: %02X %02X %02X %02X %02X\n",
+                buf[0], buf[1], buf[2], buf[3], buf[4]);
+
+        /* set demod chip */
+        switch (buf[0]) {
+                case 0x04:
+                        state->demod_chip = NXT2002;
+                        printk("nxt200x: NXT2002 Detected\n");
+                        break;
+                case 0x05:
+                        state->demod_chip = NXT2004;
+                        printk("nxt200x: NXT2004 Detected\n");
+                        break;
+                default:
+                        goto error;
+        }
+
+        /* make sure demod chip is supported */
+        switch (state->demod_chip) {
+                case NXT2002:
+                        if (buf[0] != 0x04) goto error;         /* device id */
+                        if (buf[1] != 0x02) goto error;         /* fab id */
+                        if (buf[2] != 0x11) goto error;         /* month */
+                        if (buf[3] != 0x20) goto error;         /* year msb */
+                        if (buf[4] != 0x00) goto error;         /* year lsb */
+                        break;
+                case NXT2004:
+                        if (buf[0] != 0x05) goto error;         /* device id */
+                        break;
+                default:
+                        goto error;
+        }
+
+        /* create dvb_frontend */
+        state->frontend.ops = &state->ops;
+        state->frontend.demodulator_priv = state;
+        return &state->frontend;
+
+error:
+        if (state)
+                kfree(state);
+        printk("Unknown/Unsupported NXT chip: %02X %02X %02X %02X %02X\n",
+                buf[0], buf[1], buf[2], buf[3], buf[4]);
+        return NULL;
+}
+
+static struct dvb_frontend_ops nxt200x_ops = {
+
+        .info = {
+                .name = "Nextwave NXT200X VSB/QAM frontend",
+                .type = FE_ATSC,
+                .frequency_min =  54000000,
+                .frequency_max = 860000000,
+                .frequency_stepsize = 166666,   /* stepsize is just a guess */
+                .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+                        FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+                        FE_CAN_8VSB | FE_CAN_QAM_64 | FE_CAN_QAM_256
+        },
+
+        .release = nxt200x_release,
+
+        .init = nxt200x_init,
+        .sleep = nxt200x_sleep,
+
+        .set_frontend = nxt200x_setup_frontend_parameters,
+        .get_tune_settings = nxt200x_get_tune_settings,
+
+        .read_status = nxt200x_read_status,
+        .read_ber = nxt200x_read_ber,
+        .read_signal_strength = nxt200x_read_signal_strength,
+        .read_snr = nxt200x_read_snr,
+        .read_ucblocks = nxt200x_read_ucblocks,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("NXT200X (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulator Driver");
+MODULE_AUTHOR("Kirk Lapray, Jean-Francois Thibert, and Taylor Jacob");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(nxt200x_attach);
+
diff --git a/drivers/media/dvb/frontends/nxt200x.h b/drivers/media/dvb/frontends/nxt200x.h
new file mode 100644
index 000000000000..8dc3f03ecdf7
--- /dev/null
+++ b/drivers/media/dvb/frontends/nxt200x.h
@@ -0,0 +1,58 @@
+/*
+ *    Support for NXT2002 and NXT2004 - VSB/QAM
+ *
+ *    Copyright (C) 2005 Kirk Lapray (kirk.lapray@gmail.com)
+ *    based on nxt2002 by Taylor Jacob <rtjacob@earthlink.net>
+ *    and nxt2004 by Jean-Francois Thibert (jeanfrancois@sagetv.com)
+ *
+ *    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 NXT200X_H
+#define NXT200X_H
+
+#include <linux/dvb/frontend.h>
+#include <linux/firmware.h>
+
+typedef enum nxt_chip_t {
+                NXTUNDEFINED,
+                NXT2002,
+                NXT2004
+}nxt_chip_type;
+
+struct nxt200x_config
+{
+        /* the demodulator's i2c address */
+        u8 demod_address;
+
+        /* tuner information */
+        u8 pll_address;
+        struct dvb_pll_desc *pll_desc;
+
+        /* need to set device param for start_dma */
+        int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
+};
+
+extern struct dvb_frontend* nxt200x_attach(const struct nxt200x_config* config,
+                                           struct i2c_adapter* i2c);
+
+#endif /* NXT200X_H */
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */