Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

5 files changed, 3439 insertions, 0 deletions

diff --git a/drivers/media/dvb/b2c2/Kconfig b/drivers/media/dvb/b2c2/Kconfig
new file mode 100644
index 00000000000..52596907a0b
--- /dev/null
+++ b/drivers/media/dvb/b2c2/Kconfig
@@ -0,0 +1,26 @@
+config DVB_B2C2_SKYSTAR
+	tristate "B2C2/Technisat Air/Sky/CableStar 2 PCI"
+	depends on DVB_CORE && PCI
+	select DVB_STV0299
+	select DVB_MT352
+	select DVB_MT312
+	select DVB_NXT2002
+	help
+	  Support for the Skystar2 PCI DVB card by Technisat, which
+	  is equipped with the FlexCopII chipset by B2C2, and
+	  for the B2C2/BBTI Air2PC-ATSC card.
+
+	  Say Y if you own such a device and want to use it.
+
+config DVB_B2C2_USB
+	tristate "B2C2/Technisat Air/Sky/Cable2PC USB"
+	depends on DVB_CORE && USB && EXPERIMENTAL
+	select DVB_STV0299
+	select DVB_MT352
+	help
+	  Support for the Air/Sky/Cable2PC USB DVB device by B2C2. Currently
+	  the does nothing, but providing basic function for the used usb 
+	  protocol.
+
+	  Say Y if you own such a device and want to use it.
+
diff --git a/drivers/media/dvb/b2c2/Makefile b/drivers/media/dvb/b2c2/Makefile
new file mode 100644
index 00000000000..9fb1247bfab
--- /dev/null
+++ b/drivers/media/dvb/b2c2/Makefile
@@ -0,0 +1,6 @@
+obj-b2c2-usb = b2c2-usb-core.o b2c2-common.o
+
+obj-$(CONFIG_DVB_B2C2_SKYSTAR) += skystar2.o
+obj-$(CONFIG_DVB_B2C2_USB) + = b2c2-usb.o
+
+EXTRA_CFLAGS = -Idrivers/media/dvb/dvb-core/ -Idrivers/media/dvb/frontends/
diff --git a/drivers/media/dvb/b2c2/b2c2-common.c b/drivers/media/dvb/b2c2/b2c2-common.c
new file mode 100644
index 00000000000..000d60c405e
--- /dev/null
+++ b/drivers/media/dvb/b2c2/b2c2-common.c
@@ -0,0 +1,214 @@
+/*
+ * b2c2-common.c - common methods for the B2C2/Technisat SkyStar2 PCI DVB card and
+ *                 for the B2C2/Technisat Sky/Cable/AirStar USB devices
+ *                 based on the FlexCopII/FlexCopIII by B2C2, Inc.
+ *
+ * Copyright (C) 2003  Vadim Catana, skystar@moldova.cc
+ *
+ * FIX: DISEQC Tone Burst in flexcop_diseqc_ioctl()
+ * FIX: FULL soft DiSEqC for skystar2 (FlexCopII rev 130) VP310 equipped
+ *     Vincenzo Di Massa, hawk.it at tiscalinet.it
+ *
+ * Converted to Linux coding style
+ * Misc reorganization, polishing, restyling
+ *     Roberto Ragusa, r.ragusa at libero.it
+ *
+ * Added hardware filtering support,
+ *     Niklas Peinecke, peinecke at gdv.uni-hannover.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+#include "stv0299.h"
+#include "mt352.h"
+#include "mt312.h"
+
+static int samsung_tbmu24112_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
+{
+	u8 aclk = 0;
+	u8 bclk = 0;
+
+	if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
+	else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
+	else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
+	else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
+	else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
+	else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
+
+	stv0299_writereg (fe, 0x13, aclk);
+	stv0299_writereg (fe, 0x14, bclk);
+	stv0299_writereg (fe, 0x1f, (ratio >> 16) & 0xff);
+	stv0299_writereg (fe, 0x20, (ratio >>  8) & 0xff);
+	stv0299_writereg (fe, 0x21, (ratio      ) & 0xf0);
+
+	return 0;
+}
+
+static int samsung_tbmu24112_pll_set(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
+{
+	u8 buf[4];
+	u32 div;
+	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
+//	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	div = params->frequency / 125;
+
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = div & 0xff;
+	buf[2] = 0x84;  // 0xC4
+	buf[3] = 0x08;
+
+	if (params->frequency < 1500000) buf[3] |= 0x10;
+
+//	if (i2c_transfer (&adapter->i2c_adap, &msg, 1) != 1) return -EIO;
+	return 0;
+}
+
+static u8 samsung_tbmu24112_inittab[] = {
+	     0x01, 0x15,
+	     0x02, 0x30,
+	     0x03, 0x00,
+	     0x04, 0x7D,
+	     0x05, 0x35,
+	     0x06, 0x02,
+	     0x07, 0x00,
+	     0x08, 0xC3,
+	     0x0C, 0x00,
+	     0x0D, 0x81,
+	     0x0E, 0x23,
+	     0x0F, 0x12,
+	     0x10, 0x7E,
+	     0x11, 0x84,
+	     0x12, 0xB9,
+	     0x13, 0x88,
+	     0x14, 0x89,
+	     0x15, 0xC9,
+	     0x16, 0x00,
+	     0x17, 0x5C,
+	     0x18, 0x00,
+	     0x19, 0x00,
+	     0x1A, 0x00,
+	     0x1C, 0x00,
+	     0x1D, 0x00,
+	     0x1E, 0x00,
+	     0x1F, 0x3A,
+	     0x20, 0x2E,
+	     0x21, 0x80,
+	     0x22, 0xFF,
+	     0x23, 0xC1,
+	     0x28, 0x00,
+	     0x29, 0x1E,
+	     0x2A, 0x14,
+	     0x2B, 0x0F,
+	     0x2C, 0x09,
+	     0x2D, 0x05,
+	     0x31, 0x1F,
+	     0x32, 0x19,
+	     0x33, 0xFE,
+	     0x34, 0x93,
+	     0xff, 0xff,
+};
+
+static struct stv0299_config samsung_tbmu24112_config = {
+	.demod_address = 0x68,
+	.inittab = samsung_tbmu24112_inittab,
+	.mclk = 88000000UL,
+	.invert = 0,
+	.enhanced_tuning = 0,
+	.skip_reinit = 0,
+	.lock_output = STV0229_LOCKOUTPUT_LK,
+	.volt13_op0_op1 = STV0299_VOLT13_OP1,
+	.min_delay_ms = 100,
+	.set_symbol_rate = samsung_tbmu24112_set_symbol_rate,
+   	.pll_set = samsung_tbmu24112_pll_set,
+};
+
+
+
+
+
+static int samsung_tdtc9251dh0_demod_init(struct dvb_frontend* fe)
+{
+	static u8 mt352_clock_config [] = { 0x89, 0x10, 0x2d };
+	static u8 mt352_reset [] = { 0x50, 0x80 };
+	static u8 mt352_adc_ctl_1_cfg [] = { 0x8E, 0x40 };
+	static u8 mt352_agc_cfg [] = { 0x67, 0x28, 0xa1 };
+	static u8 mt352_capt_range_cfg[] = { 0x75, 0x32 };
+
+	mt352_write(fe, mt352_clock_config, sizeof(mt352_clock_config));
+	udelay(2000);
+	mt352_write(fe, mt352_reset, sizeof(mt352_reset));
+	mt352_write(fe, mt352_adc_ctl_1_cfg, sizeof(mt352_adc_ctl_1_cfg));
+
+	mt352_write(fe, mt352_agc_cfg, sizeof(mt352_agc_cfg));
+	mt352_write(fe, mt352_capt_range_cfg, sizeof(mt352_capt_range_cfg));
+
+	return 0;
+}
+
+static int samsung_tdtc9251dh0_pll_set(struct dvb_frontend* fe, struct dvb_frontend_parameters* params, u8* pllbuf)
+{
+	u32 div;
+	unsigned char bs = 0;
+
+	#define IF_FREQUENCYx6 217    /* 6 * 36.16666666667MHz */
+	div = (((params->frequency + 83333) * 3) / 500000) + IF_FREQUENCYx6;
+
+	if (params->frequency >= 48000000 && params->frequency <= 154000000) bs = 0x09;
+	if (params->frequency >= 161000000 && params->frequency <= 439000000) bs = 0x0a;
+	if (params->frequency >= 447000000 && params->frequency <= 863000000) bs = 0x08;
+
+	pllbuf[0] = 0xc2; // Note: non-linux standard PLL i2c address
+	pllbuf[1] = div >> 8;
+   	pllbuf[2] = div & 0xff;
+   	pllbuf[3] = 0xcc;
+   	pllbuf[4] = bs;
+
+	return 0;
+}
+
+static struct mt352_config samsung_tdtc9251dh0_config = {
+
+	.demod_address = 0x0f,
+	.demod_init = samsung_tdtc9251dh0_demod_init,
+   	.pll_set = samsung_tdtc9251dh0_pll_set,
+};
+
+static int skystar23_samsung_tbdu18132_pll_set(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
+{
+	u8 buf[4];
+	u32 div;
+	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
+//	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	div = (params->frequency + (125/2)) / 125;
+
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = (div >> 0) & 0xff;
+	buf[2] = 0x84 | ((div >> 10) & 0x60);
+	buf[3] = 0x80;
+
+	if (params->frequency < 1550000)
+		buf[3] |= 0x02;
+
+	//if (i2c_transfer (&adapter->i2c_adap, &msg, 1) != 1) return -EIO;
+	return 0;
+}
+
+static struct mt312_config skystar23_samsung_tbdu18132_config = {
+
+	.demod_address = 0x0e,
+   	.pll_set = skystar23_samsung_tbdu18132_pll_set,
+};
diff --git a/drivers/media/dvb/b2c2/b2c2-usb-core.c b/drivers/media/dvb/b2c2/b2c2-usb-core.c
new file mode 100644
index 00000000000..9306da046c9
--- /dev/null
+++ b/drivers/media/dvb/b2c2/b2c2-usb-core.c
@@ -0,0 +1,549 @@
+/*
+ * Copyright (C) 2004 Patrick Boettcher <patrick.boettcher@desy.de>,
+ *                    Luca Bertagnolio <>,
+ *
+ * based on information provided by John Jurrius from BBTI, 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, version 2.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/version.h>
+
+#include "dmxdev.h"
+#include "dvb_demux.h"
+#include "dvb_filter.h"
+#include "dvb_net.h"
+#include "dvb_frontend.h"
+
+/* debug */
+#define dprintk(level,args...) \
+	    do { if ((debug & level)) { printk(args); } } while (0)
+#define debug_dump(b,l) if (debug) {\
+	int i; deb_xfer("%s: %d > ",__FUNCTION__,l); \
+	for (i = 0; i < l; i++) deb_xfer("%02x ", b[i]); \
+	deb_xfer("\n");\
+}
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,ctrl=4 (or-able)).");
+
+#define deb_info(args...) dprintk(0x01,args)
+#define deb_ts(args...)   dprintk(0x02,args)
+#define deb_ctrl(args...) dprintk(0x04,args)
+
+/* Version information */
+#define DRIVER_VERSION "0.0"
+#define DRIVER_DESC "Driver for B2C2/Technisat Air/Cable/Sky-2-PC USB devices"
+#define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de"
+
+/* transfer parameters */
+#define B2C2_USB_FRAMES_PER_ISO		4
+#define B2C2_USB_NUM_ISO_URB		4    /* TODO check out a good value */
+
+#define B2C2_USB_CTRL_PIPE_IN		usb_rcvctrlpipe(b2c2->udev,0)
+#define B2C2_USB_CTRL_PIPE_OUT		usb_sndctrlpipe(b2c2->udev,0)
+#define B2C2_USB_DATA_PIPE			usb_rcvisocpipe(b2c2->udev,0x81)
+
+struct usb_b2c2_usb {
+	struct usb_device *udev;
+	struct usb_interface *uintf;
+
+	u8 *iso_buffer;
+	int buffer_size;
+	dma_addr_t iso_dma_handle;
+	struct urb *iso_urb[B2C2_USB_NUM_ISO_URB];
+};
+
+
+/*
+ * USB
+ * 10 90 34 12 78 56 04 00
+ * usb_control_msg(udev, usb_sndctrlpipe(udev,0),
+ * 0x90,
+ * 0x10,
+ * 0x1234,
+ * 0x5678,
+ * buf,
+ * 4,
+ * 5*HZ);
+ *
+ * extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
+ * __u8 request,
+ * __u8 requesttype,
+ * __u16 value,
+ * __u16 index,
+ * void *data,
+ * __u16 size,
+ * int timeout);
+ *
+ */
+
+/* request types */
+typedef enum {
+
+/* something is wrong with this part
+	RTYPE_READ_DW         = (1 << 6),
+	RTYPE_WRITE_DW_1      = (3 << 6),
+	RTYPE_READ_V8_MEMORY  = (6 << 6),
+	RTYPE_WRITE_V8_MEMORY = (7 << 6),
+	RTYPE_WRITE_V8_FLASH  = (8 << 6),
+	RTYPE_GENERIC         = (9 << 6),
+*/
+	RTYPE_READ_DW = (3 << 6),
+	RTYPE_WRITE_DW_1 = (1 << 6),
+	
+	RTYPE_READ_V8_MEMORY  = (6 << 6),
+	RTYPE_WRITE_V8_MEMORY = (7 << 6),
+	RTYPE_WRITE_V8_FLASH  = (8 << 6),
+	RTYPE_GENERIC         = (9 << 6),
+} b2c2_usb_request_type_t;
+
+/* request */
+typedef enum {
+	B2C2_USB_WRITE_V8_MEM = 0x04,
+	B2C2_USB_READ_V8_MEM  = 0x05,
+	B2C2_USB_READ_REG     = 0x08,
+	B2C2_USB_WRITE_REG    = 0x0A,
+/*	B2C2_USB_WRITEREGLO   = 0x0A, */
+	B2C2_USB_WRITEREGHI   = 0x0B,
+	B2C2_USB_FLASH_BLOCK  = 0x10,
+	B2C2_USB_I2C_REQUEST  = 0x11,
+	B2C2_USB_UTILITY      = 0x12,
+} b2c2_usb_request_t;
+
+/* function definition for I2C_REQUEST */
+typedef enum {
+	USB_FUNC_I2C_WRITE       = 0x01,
+	USB_FUNC_I2C_MULTIWRITE  = 0x02,
+	USB_FUNC_I2C_READ        = 0x03,
+	USB_FUNC_I2C_REPEATWRITE = 0x04,
+	USB_FUNC_GET_DESCRIPTOR  = 0x05,
+	USB_FUNC_I2C_REPEATREAD  = 0x06,
+/* DKT 020208 - add this to support special case of DiSEqC */
+	USB_FUNC_I2C_CHECKWRITE  = 0x07,
+	USB_FUNC_I2C_CHECKRESULT = 0x08,
+} b2c2_usb_i2c_function_t;
+
+/*
+ * function definition for UTILITY request 0x12
+ * DKT 020304 - new utility function
+ */
+typedef enum {
+	UTILITY_SET_FILTER          = 0x01,
+	UTILITY_DATA_ENABLE         = 0x02,
+	UTILITY_FLEX_MULTIWRITE     = 0x03,
+	UTILITY_SET_BUFFER_SIZE     = 0x04,
+	UTILITY_FLEX_OPERATOR       = 0x05,
+	UTILITY_FLEX_RESET300_START = 0x06,
+	UTILITY_FLEX_RESET300_STOP  = 0x07,
+	UTILITY_FLEX_RESET300       = 0x08,
+	UTILITY_SET_ISO_SIZE        = 0x09,
+	UTILITY_DATA_RESET          = 0x0A,
+	UTILITY_GET_DATA_STATUS     = 0x10,
+	UTILITY_GET_V8_REG          = 0x11,
+/* DKT 020326 - add function for v1.14 */
+	UTILITY_SRAM_WRITE          = 0x12,
+	UTILITY_SRAM_READ           = 0x13,
+	UTILITY_SRAM_TESTFILL       = 0x14,
+	UTILITY_SRAM_TESTSET        = 0x15,
+	UTILITY_SRAM_TESTVERIFY     = 0x16,
+} b2c2_usb_utility_function_t;
+
+#define B2C2_WAIT_FOR_OPERATION_RW  1  // 1 s
+#define B2C2_WAIT_FOR_OPERATION_RDW 3  // 3 s
+#define B2C2_WAIT_FOR_OPERATION_WDW 1  // 1 s
+
+#define B2C2_WAIT_FOR_OPERATION_V8READ   3  // 3 s
+#define B2C2_WAIT_FOR_OPERATION_V8WRITE  3  // 3 s
+#define B2C2_WAIT_FOR_OPERATION_V8FLASH  3  // 3 s
+
+/* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
+ * in the IBI address, to make the V8 code simpler.
+ * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (these are the six bits used)
+ *                  in general: 0000 0HHH 000L LL00
+ * IBI ADDRESS FORMAT:                    RHHH BLLL
+ *
+ * where R is the read(1)/write(0) bit, B is the busy bit
+ * and HHH and LLL are the two sets of three bits from the PCI address.
+ */
+#define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
+#define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
+
+/*
+ * DKT 020228 - forget about this VENDOR_BUFFER_SIZE, read and write register
+ * deal with DWORD or 4 bytes, that should be should from now on
+ */
+static u32 b2c2_usb_read_dw(struct usb_b2c2_usb *b2c2, u16 wRegOffsPCI)
+{
+	u32 val;
+	u16 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | 0x0080;
+	int len = usb_control_msg(b2c2->udev,
+			B2C2_USB_CTRL_PIPE_IN,
+			B2C2_USB_READ_REG,
+			RTYPE_READ_DW,
+			wAddress,
+			0,
+			&val,
+			sizeof(u32),
+			B2C2_WAIT_FOR_OPERATION_RDW * 1000);
+
+	if (len != sizeof(u32)) {
+		err("error while reading dword from %d (%d).",wAddress,wRegOffsPCI);
+		return -EIO;
+	} else
+		return val;
+}
+
+/*
+ * DKT 020228 - from now on, we don't support anything older than firm 1.00
+ * I eliminated the write register as a 2 trip of writing hi word and lo word
+ * and force this to write only 4 bytes at a time.
+ * NOTE: this should work with all the firmware from 1.00 and newer
+ */
+static int b2c2_usb_write_dw(struct usb_b2c2_usb *b2c2, u16 wRegOffsPCI, u32 val)
+{
+	u16 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI);
+	int len = usb_control_msg(b2c2->udev,
+			B2C2_USB_CTRL_PIPE_OUT,
+			B2C2_USB_WRITE_REG,
+			RTYPE_WRITE_DW_1,
+			wAddress,
+			0,
+			&val,
+			sizeof(u32),
+			B2C2_WAIT_FOR_OPERATION_RDW * 1000);
+
+	if (len != sizeof(u32)) {
+		err("error while reading dword from %d (%d).",wAddress,wRegOffsPCI);
+		return -EIO;
+	} else
+		return 0;
+}
+
+/*
+ * DKT 010817 - add support for V8 memory read/write and flash update
+ */
+static int b2c2_usb_v8_memory_req(struct usb_b2c2_usb *b2c2,
+		b2c2_usb_request_t req, u8 page, u16 wAddress,
+		u16 buflen, u8 *pbBuffer)
+{
+	u8 dwRequestType;
+	u16 wIndex;
+	int nWaitTime,pipe,len;
+
+	wIndex = page << 8;
+
+	switch (req) {
+		case B2C2_USB_READ_V8_MEM:
+			nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
+			dwRequestType = (u8) RTYPE_READ_V8_MEMORY;
+			pipe = B2C2_USB_CTRL_PIPE_IN;
+		break;
+		case B2C2_USB_WRITE_V8_MEM:
+			wIndex |= pbBuffer[0];
+			nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
+			dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY;
+			pipe = B2C2_USB_CTRL_PIPE_OUT;
+		break;
+		case B2C2_USB_FLASH_BLOCK:
+			nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
+			dwRequestType = (u8) RTYPE_WRITE_V8_FLASH;
+			pipe = B2C2_USB_CTRL_PIPE_OUT;
+		break;
+		default:
+			deb_info("unsupported request for v8_mem_req %x.\n",req);
+		return -EINVAL;
+	}
+	len = usb_control_msg(b2c2->udev,pipe,
+			req,
+			dwRequestType,
+			wAddress,
+			wIndex,
+			pbBuffer,
+			buflen,
+			nWaitTime * 1000);
+	return len == buflen ? 0 : -EIO;
+}
+
+static int b2c2_usb_i2c_req(struct usb_b2c2_usb *b2c2,
+		b2c2_usb_request_t req, b2c2_usb_i2c_function_t func,
+		u8 port, u8 chipaddr, u8 addr, u8 buflen, u8 *buf)
+{
+	u16 wValue, wIndex;
+	int nWaitTime,pipe,len;
+	u8 dwRequestType;
+
+	switch (func) {
+		case USB_FUNC_I2C_WRITE:
+		case USB_FUNC_I2C_MULTIWRITE:
+		case USB_FUNC_I2C_REPEATWRITE:
+		/* DKT 020208 - add this to support special case of DiSEqC */
+		case USB_FUNC_I2C_CHECKWRITE:
+			pipe = B2C2_USB_CTRL_PIPE_OUT;
+			nWaitTime = 2;
+			dwRequestType = (u8) RTYPE_GENERIC;
+		break;
+		case USB_FUNC_I2C_READ:
+		case USB_FUNC_I2C_REPEATREAD:
+			pipe = B2C2_USB_CTRL_PIPE_IN;
+			nWaitTime = 2;
+			dwRequestType = (u8) RTYPE_GENERIC;
+		break;
+		default:
+			deb_info("unsupported function for i2c_req %x\n",func);
+			return -EINVAL;
+	}
+	wValue = (func << 8 ) | port;
+	wIndex = (chipaddr << 8 ) | addr;
+
+	len = usb_control_msg(b2c2->udev,pipe,
+			req,
+			dwRequestType,
+			addr,
+			wIndex,
+			buf,
+			buflen,
+			nWaitTime * 1000);
+	return len == buflen ? 0 : -EIO;
+}
+
+int static b2c2_usb_utility_req(struct usb_b2c2_usb *b2c2, int set,
+		b2c2_usb_utility_function_t func, u8 extra, u16 wIndex,
+		u16 buflen, u8 *pvBuffer)
+{
+	u16 wValue;
+	int nWaitTime = 2,
+		pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN,
+		len;
+
+	wValue = (func << 8) | extra;
+
+	len = usb_control_msg(b2c2->udev,pipe,
+			B2C2_USB_UTILITY,
+			(u8) RTYPE_GENERIC,
+			wValue,
+			wIndex,
+			pvBuffer,
+			buflen,
+			nWaitTime * 1000);
+	return len == buflen ? 0 : -EIO;
+}
+
+
+
+static void b2c2_dumpfourreg(struct usb_b2c2_usb *b2c2, u16 offs)
+{
+	u32 r0,r1,r2,r3;
+	r0 = r1 = r2 = r3 = 0;
+	r0 = b2c2_usb_read_dw(b2c2,offs);
+	r1 = b2c2_usb_read_dw(b2c2,offs + 0x04);
+	r2 = b2c2_usb_read_dw(b2c2,offs + 0x08);
+	r3 = b2c2_usb_read_dw(b2c2,offs + 0x0c);
+	deb_ctrl("dump: offset: %03x, %08x, %08x, %08x, %08x\n",offs,r0,r1,r2,r3);
+}
+
+static void b2c2_urb_complete(struct urb *urb, struct pt_regs *ptregs)
+{
+	struct usb_b2c2_usb *b2c2 = urb->context;
+	deb_ts("urb completed, bufsize: %d\n",urb->transfer_buffer_length);
+
+//	urb_submit_urb(urb,GFP_ATOMIC); enable for real action
+}
+
+static void b2c2_exit_usb(struct usb_b2c2_usb *b2c2)
+{
+	int i;
+	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
+		if (b2c2->iso_urb[i] != NULL) { /* not sure about unlink_urb and iso-urbs TODO */
+			deb_info("unlinking/killing urb no. %d\n",i);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,7)
+			usb_unlink_urb(b2c2->iso_urb[i]);
+#else
+			usb_kill_urb(b2c2->iso_urb[i]);
+#endif
+			usb_free_urb(b2c2->iso_urb[i]);
+		}
+
+	if (b2c2->iso_buffer != NULL)
+		pci_free_consistent(NULL,b2c2->buffer_size, b2c2->iso_buffer, b2c2->iso_dma_handle);
+
+}
+
+static int b2c2_init_usb(struct usb_b2c2_usb *b2c2)
+{
+	u16 frame_size = le16_to_cpu(b2c2->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
+	int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret;
+	int buffer_offset = 0;
+
+	deb_info("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
+			B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize);
+
+	b2c2->iso_buffer = pci_alloc_consistent(NULL,bufsize,&b2c2->iso_dma_handle);
+	if (b2c2->iso_buffer == NULL)
+		return -ENOMEM;
+	memset(b2c2->iso_buffer, 0, bufsize);
+	b2c2->buffer_size = bufsize;
+
+	/* creating iso urbs */
+	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
+		if (!(b2c2->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) {
+			ret = -ENOMEM;
+			goto urb_error;
+		}
+	/* initialising and submitting iso urbs */
+	for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
+		int frame_offset = 0;
+		struct urb *urb = b2c2->iso_urb[i];
+		deb_info("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset);
+
+		urb->dev = b2c2->udev;
+		urb->context = b2c2;
+		urb->complete = b2c2_urb_complete;
+		urb->pipe = B2C2_USB_DATA_PIPE;
+		urb->transfer_flags = URB_ISO_ASAP;
+		urb->interval = 1;
+		urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
+		urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
+		urb->transfer_buffer = b2c2->iso_buffer + buffer_offset;
+
+		buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
+		for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
+			deb_info("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset);
+			urb->iso_frame_desc[j].offset = frame_offset;
+			urb->iso_frame_desc[j].length = frame_size;
+			frame_offset += frame_size;
+		}
+
+		if ((ret = usb_submit_urb(b2c2->iso_urb[i],GFP_ATOMIC))) {
+			err("submitting urb %d failed with %d.",i,ret);
+			goto urb_error;
+		}
+		deb_info("submitted urb no. %d.\n",i);
+	}
+
+	ret = 0;
+	goto success;
+urb_error:
+	b2c2_exit_usb(b2c2);
+success:
+	return ret;
+}
+
+static int b2c2_usb_probe(struct usb_interface *intf,
+		const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct usb_b2c2_usb *b2c2 = NULL;
+	int ret;
+
+	b2c2 = kmalloc(sizeof(struct usb_b2c2_usb),GFP_KERNEL);
+	if (b2c2 == NULL) {
+		err("no memory");
+		return -ENOMEM;
+	}
+	b2c2->udev = udev;
+	b2c2->uintf = intf;
+
+	/* use the alternate setting with the larges buffer */
+	usb_set_interface(udev,0,1);
+
+	if ((ret = b2c2_init_usb(b2c2)))
+		goto usb_init_error;
+
+	usb_set_intfdata(intf,b2c2);
+
+	switch (udev->speed) {
+		case USB_SPEED_LOW:
+			err("cannot handle USB speed because it is to sLOW.");
+			break;
+		case USB_SPEED_FULL:
+			info("running at FULL speed.");
+			break;
+		case USB_SPEED_HIGH:
+			info("running at HIGH speed.");
+			break;
+		case USB_SPEED_UNKNOWN: /* fall through */
+		default:
+			err("cannot handle USB speed because it is unkown.");
+		break;
+	}
+
+	b2c2_dumpfourreg(b2c2,0x200);
+	b2c2_dumpfourreg(b2c2,0x300);
+	b2c2_dumpfourreg(b2c2,0x400);
+	b2c2_dumpfourreg(b2c2,0x700);
+
+
+	if (ret == 0)
+		info("%s successfully initialized and connected.",DRIVER_DESC);
+	else
+		info("%s error while loading driver (%d)",DRIVER_DESC,ret);
+
+	ret = 0;
+	goto success;
+
+usb_init_error:
+	kfree(b2c2);
+success:
+	return ret;
+}
+
+static void b2c2_usb_disconnect(struct usb_interface *intf)
+{
+	struct usb_b2c2_usb *b2c2 = usb_get_intfdata(intf);
+	usb_set_intfdata(intf,NULL);
+	if (b2c2 != NULL) {
+		b2c2_exit_usb(b2c2);
+		kfree(b2c2);
+	}
+	info("%s successfully deinitialized and disconnected.",DRIVER_DESC);
+
+}
+
+static struct usb_device_id b2c2_usb_table [] = {
+	    { USB_DEVICE(0x0af7, 0x0101) }
+};
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver b2c2_usb_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "dvb_b2c2_usb",
+	.probe 		= b2c2_usb_probe,
+	.disconnect = b2c2_usb_disconnect,
+	.id_table 	= b2c2_usb_table,
+};
+
+/* module stuff */
+static int __init b2c2_usb_init(void)
+{
+	int result;
+	if ((result = usb_register(&b2c2_usb_driver))) {
+		err("usb_register failed. Error number %d",result);
+		return result;
+	}
+
+	return 0;
+}
+
+static void __exit b2c2_usb_exit(void)
+{
+	/* deregister this driver from the USB subsystem */
+	usb_deregister(&b2c2_usb_driver);
+}
+
+module_init (b2c2_usb_init);
+module_exit (b2c2_usb_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, b2c2_usb_table);
diff --git a/drivers/media/dvb/b2c2/skystar2.c b/drivers/media/dvb/b2c2/skystar2.c
new file mode 100644
index 00000000000..336c178fcd5
--- /dev/null
+++ b/drivers/media/dvb/b2c2/skystar2.c
@@ -0,0 +1,2644 @@
+/*
+ * skystar2.c - driver for the Technisat SkyStar2 PCI DVB card
+ *              based on the FlexCopII by B2C2,Inc.
+ *
+ * Copyright (C) 2003  Vadim Catana, skystar@moldova.cc
+ *
+ * FIX: DISEQC Tone Burst in flexcop_diseqc_ioctl()
+ * FIX: FULL soft DiSEqC for skystar2 (FlexCopII rev 130) VP310 equipped
+ *     Vincenzo Di Massa, hawk.it at tiscalinet.it
+ *
+ * Converted to Linux coding style
+ * Misc reorganization, polishing, restyling
+ *     Roberto Ragusa, skystar2-c5b8 at robertoragusa dot it
+ *
+ * Added hardware filtering support,
+ *     Niklas Peinecke, peinecke at gdv.uni-hannover.de
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/version.h>
+
+#include <asm/io.h>
+
+#include "dvb_frontend.h"
+
+#include <linux/dvb/frontend.h>
+#include <linux/dvb/dmx.h>
+#include "dvb_demux.h"
+#include "dmxdev.h"
+#include "dvb_filter.h"
+#include "dvbdev.h"
+#include "demux.h"
+#include "dvb_net.h"
+#include "stv0299.h"
+#include "mt352.h"
+#include "mt312.h"
+#include "nxt2002.h"
+
+static int debug;
+static int enable_hw_filters = 2;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Set debugging level (0 = default, 1 = most messages, 2 = all messages).");
+module_param(enable_hw_filters, int, 0444);
+MODULE_PARM_DESC(enable_hw_filters, "enable hardware filters: supported values: 0 (none), 1, 2");
+
+#define dprintk(x...)	do { if (debug>=1) printk(x); } while (0)
+#define ddprintk(x...)	do { if (debug>=2) printk(x); } while (0)
+
+#define SIZE_OF_BUF_DMA1	0x3ac00
+#define SIZE_OF_BUF_DMA2	0x758
+
+#define MAX_N_HW_FILTERS	(6+32)
+#define N_PID_SLOTS		256
+
+struct dmaq {
+	u32 bus_addr;
+	u32 head;
+	u32 tail;
+	u32 buffer_size;
+	u8 *buffer;
+};
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
+#define __iomem
+#endif
+
+struct adapter {
+	struct pci_dev *pdev;
+
+	u8 card_revision;
+	u32 b2c2_revision;
+	u32 pid_filter_max;
+	u32 mac_filter_max;
+	u32 irq;
+	void __iomem *io_mem;
+	unsigned long io_port;
+	u8 mac_addr[8];
+	u32 dw_sram_type;
+
+	struct dvb_adapter *dvb_adapter;
+	struct dvb_demux demux;
+	struct dmxdev dmxdev;
+	struct dmx_frontend hw_frontend;
+	struct dmx_frontend mem_frontend;
+	struct i2c_adapter i2c_adap;
+	struct dvb_net dvbnet;
+
+	struct semaphore i2c_sem;
+
+	struct dmaq dmaq1;
+	struct dmaq dmaq2;
+
+	u32 dma_ctrl;
+	u32 dma_status;
+
+	int capturing;
+
+	spinlock_t lock;
+
+	int useable_hw_filters;
+	u16 hw_pids[MAX_N_HW_FILTERS];
+	u16 pid_list[N_PID_SLOTS];
+	int pid_rc[N_PID_SLOTS];	// ref counters for the pids
+	int pid_count;
+	int whole_bandwidth_count;
+	u32 mac_filter;
+
+	struct dvb_frontend* fe;
+	int (*fe_sleep)(struct dvb_frontend* fe);
+};
+
+#define write_reg_dw(adapter,reg,value) writel(value, adapter->io_mem + reg)
+#define read_reg_dw(adapter,reg) readl(adapter->io_mem + reg)
+
+static void write_reg_bitfield(struct adapter *adapter, u32 reg, u32 zeromask, u32 orvalue)
+{
+	u32 tmp;
+
+	tmp = read_reg_dw(adapter, reg);
+	tmp = (tmp & ~zeromask) | orvalue;
+	write_reg_dw(adapter, reg, tmp);
+}
+
+/* i2c functions */
+static int i2c_main_write_for_flex2(struct adapter *adapter, u32 command, u8 *buf, int retries)
+{
+	int i;
+	u32 value;
+
+	write_reg_dw(adapter, 0x100, 0);
+	write_reg_dw(adapter, 0x100, command);
+
+	for (i = 0; i < retries; i++) {
+		value = read_reg_dw(adapter, 0x100);
+
+		if ((value & 0x40000000) == 0) {
+			if ((value & 0x81000000) == 0x80000000) {
+				if (buf != 0)
+					*buf = (value >> 0x10) & 0xff;
+
+				return 1;
+			}
+		} else {
+			write_reg_dw(adapter, 0x100, 0);
+			write_reg_dw(adapter, 0x100, command);
+		}
+	}
+
+	return 0;
+}
+
+/* device = 0x10000000 for tuner, 0x20000000 for eeprom */
+static void i2c_main_setup(u32 device, u32 chip_addr, u8 op, u8 addr, u32 value, u32 len, u32 *command)
+{
+	*command = device | ((len - 1) << 26) | (value << 16) | (addr << 8) | chip_addr;
+
+	if (op != 0)
+		*command = *command | 0x03000000;
+	else
+		*command = *command | 0x01000000;
+}
+
+static int flex_i2c_read4(struct adapter *adapter, u32 device, u32 chip_addr, u16 addr, u8 *buf, u8 len)
+{
+	u32 command;
+	u32 value;
+
+	int result, i;
+
+	i2c_main_setup(device, chip_addr, 1, addr, 0, len, &command);
+
+	result = i2c_main_write_for_flex2(adapter, command, buf, 100000);
+
+	if ((result & 0xff) != 0) {
+		if (len > 1) {
+			value = read_reg_dw(adapter, 0x104);
+
+			for (i = 1; i < len; i++) {
+				buf[i] = value & 0xff;
+				value = value >> 8;
+			}
+		}
+	}
+
+	return result;
+}
+
+static int flex_i2c_write4(struct adapter *adapter, u32 device, u32 chip_addr, u32 addr, u8 *buf, u8 len)
+{
+	u32 command;
+	u32 value;
+	int i;
+
+	if (len > 1) {
+		value = 0;
+
+		for (i = len; i > 1; i--) {
+			value = value << 8;
+			value = value | buf[i - 1];
+		}
+
+		write_reg_dw(adapter, 0x104, value);
+	}
+
+	i2c_main_setup(device, chip_addr, 0, addr, buf[0], len, &command);
+
+	return i2c_main_write_for_flex2(adapter, command, NULL, 100000);
+}
+
+static void fixchipaddr(u32 device, u32 bus, u32 addr, u32 *ret)
+{
+	if (device == 0x20000000)
+		*ret = bus | ((addr >> 8) & 3);
+	else
+		*ret = bus;
+}
+
+static u32 flex_i2c_read(struct adapter *adapter, u32 device, u32 bus, u32 addr, u8 *buf, u32 len)
+{
+	u32 chipaddr;
+	u32 bytes_to_transfer;
+	u8 *start;
+
+	ddprintk("%s:\n", __FUNCTION__);
+
+	start = buf;
+
+	while (len != 0) {
+		bytes_to_transfer = len;
+
+		if (bytes_to_transfer > 4)
+			bytes_to_transfer = 4;
+
+		fixchipaddr(device, bus, addr, &chipaddr);
+
+		if (flex_i2c_read4(adapter, device, chipaddr, addr, buf, bytes_to_transfer) == 0)
+			return buf - start;
+
+		buf = buf + bytes_to_transfer;
+		addr = addr + bytes_to_transfer;
+		len = len - bytes_to_transfer;
+	};
+
+	return buf - start;
+}
+
+static u32 flex_i2c_write(struct adapter *adapter, u32 device, u32 bus, u32 addr, u8 *buf, u32 len)
+{
+	u32 chipaddr;
+	u32 bytes_to_transfer;
+	u8 *start;
+
+	ddprintk("%s:\n", __FUNCTION__);
+
+	start = buf;
+
+	while (len != 0) {
+		bytes_to_transfer = len;
+
+		if (bytes_to_transfer > 4)
+			bytes_to_transfer = 4;
+
+		fixchipaddr(device, bus, addr, &chipaddr);
+
+		if (flex_i2c_write4(adapter, device, chipaddr, addr, buf, bytes_to_transfer) == 0)
+			return buf - start;
+
+		buf = buf + bytes_to_transfer;
+		addr = addr + bytes_to_transfer;
+		len = len - bytes_to_transfer;
+	}
+
+	return buf - start;
+}
+
+static int master_xfer(struct i2c_adapter* adapter, struct i2c_msg *msgs, int num)
+{
+	struct adapter *tmp = i2c_get_adapdata(adapter);
+	int i, ret = 0;
+
+	if (down_interruptible(&tmp->i2c_sem))
+		return -ERESTARTSYS;
+
+	ddprintk("%s: %d messages to transfer\n", __FUNCTION__, num);
+
+		for (i = 0; i < num; i++) {
+		ddprintk("message %d: flags=0x%x, addr=0x%x, buf=0x%x, len=%d \n", i,
+			 msgs[i].flags, msgs[i].addr, msgs[i].buf[0], msgs[i].len);
+	}
+
+	// read command
+	if ((num == 2) && (msgs[0].flags == 0) && (msgs[1].flags == I2C_M_RD) && (msgs[0].buf != NULL) && (msgs[1].buf != NULL)) {
+
+		ret = flex_i2c_read(tmp, 0x10000000, msgs[0].addr, msgs[0].buf[0], msgs[1].buf, msgs[1].len);
+
+		up(&tmp->i2c_sem);
+
+		if (ret != msgs[1].len) {
+			dprintk("%s: read error !\n", __FUNCTION__);
+
+			for (i = 0; i < 2; i++) {
+				dprintk("message %d: flags=0x%x, addr=0x%x, buf=0x%x, len=%d \n", i,
+				       msgs[i].flags, msgs[i].addr, msgs[i].buf[0], msgs[i].len);
+		}
+
+			return -EREMOTEIO;
+		}
+
+		return num;
+	}
+	// write command
+	for (i = 0; i < num; i++) {
+
+		if ((msgs[i].flags != 0) || (msgs[i].buf == NULL) || (msgs[i].len < 2))
+			return -EINVAL;
+
+		ret = flex_i2c_write(tmp, 0x10000000, msgs[i].addr, msgs[i].buf[0], &msgs[i].buf[1], msgs[i].len - 1);
+
+		up(&tmp->i2c_sem);
+
+		if (ret != msgs[0].len - 1) {
+			dprintk("%s: write error %i !\n", __FUNCTION__, ret);
+
+			dprintk("message %d: flags=0x%x, addr=0x%x, buf[0]=0x%x, len=%d \n", i,
+			       msgs[i].flags, msgs[i].addr, msgs[i].buf[0], msgs[i].len);
+
+			return -EREMOTEIO;
+		}
+
+		return num;
+	}
+
+	printk("%s: unknown command format !\n", __FUNCTION__);
+
+	return -EINVAL;
+}
+
+/* SRAM (Skystar2 rev2.3 has one "ISSI IS61LV256" chip on board,
+   but it seems that FlexCopII can work with more than one chip) */
+static void sram_set_net_dest(struct adapter *adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (read_reg_dw(adapter, 0x714) & 0xfffffffc) | (dest & 3);
+
+	udelay(1000);
+
+	write_reg_dw(adapter, 0x714, tmp);
+	write_reg_dw(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	/* return value is never used? */
+/*	return tmp; */
+}
+
+static void sram_set_cai_dest(struct adapter *adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (read_reg_dw(adapter, 0x714) & 0xfffffff3) | ((dest & 3) << 2);
+
+	udelay(1000);
+	udelay(1000);
+
+	write_reg_dw(adapter, 0x714, tmp);
+	write_reg_dw(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	/* return value is never used? */
+/*	return tmp; */
+}
+
+static void sram_set_cao_dest(struct adapter *adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (read_reg_dw(adapter, 0x714) & 0xffffffcf) | ((dest & 3) << 4);
+
+	udelay(1000);
+	udelay(1000);
+
+	write_reg_dw(adapter, 0x714, tmp);
+	write_reg_dw(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	/* return value is never used? */
+/*	return tmp; */
+}
+
+static void sram_set_media_dest(struct adapter *adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (read_reg_dw(adapter, 0x714) & 0xffffff3f) | ((dest & 3) << 6);
+
+	udelay(1000);
+	udelay(1000);
+
+	write_reg_dw(adapter, 0x714, tmp);
+	write_reg_dw(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	/* return value is never used? */
+/*	return tmp; */
+}
+
+/* SRAM memory is accessed through a buffer register in the FlexCop
+   chip (0x700). This register has the following structure:
+    bits 0-14  : address
+    bit  15    : read/write flag
+    bits 16-23 : 8-bit word to write
+    bits 24-27 : = 4
+    bits 28-29 : memory bank selector
+    bit  31    : busy flag
+*/
+static void flex_sram_write(struct adapter *adapter, u32 bank, u32 addr, u8 *buf, u32 len)
+{
+	int i, retries;
+	u32 command;
+
+	for (i = 0; i < len; i++) {
+		command = bank | addr | 0x04000000 | (*buf << 0x10);
+
+		retries = 2;
+
+		while (((read_reg_dw(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
+			mdelay(1);
+			retries--;
+		};
+
+		if (retries == 0)
+			printk("%s: SRAM timeout\n", __FUNCTION__);
+
+		write_reg_dw(adapter, 0x700, command);
+
+		buf++;
+		addr++;
+	}
+}
+
+static void flex_sram_read(struct adapter *adapter, u32 bank, u32 addr, u8 *buf, u32 len)
+{
+	int i, retries;
+	u32 command, value;
+
+	for (i = 0; i < len; i++) {
+		command = bank | addr | 0x04008000;
+
+		retries = 10000;
+
+		while (((read_reg_dw(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
+			mdelay(1);
+			retries--;
+		};
+
+		if (retries == 0)
+			printk("%s: SRAM timeout\n", __FUNCTION__);
+
+		write_reg_dw(adapter, 0x700, command);
+
+		retries = 10000;
+
+		while (((read_reg_dw(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
+			mdelay(1);
+			retries--;
+		};
+
+		if (retries == 0)
+			printk("%s: SRAM timeout\n", __FUNCTION__);
+
+		value = read_reg_dw(adapter, 0x700) >> 0x10;
+
+		*buf = (value & 0xff);
+
+		addr++;
+		buf++;
+	}
+}
+
+static void sram_write_chunk(struct adapter *adapter, u32 addr, u8 *buf, u16 len)
+{
+	u32 bank;
+
+	bank = 0;
+
+	if (adapter->dw_sram_type == 0x20000) {
+		bank = (addr & 0x18000) << 0x0d;
+	}
+
+	if (adapter->dw_sram_type == 0x00000) {
+		if ((addr >> 0x0f) == 0)
+			bank = 0x20000000;
+		else
+			bank = 0x10000000;
+	}
+
+	flex_sram_write(adapter, bank, addr & 0x7fff, buf, len);
+}
+
+static void sram_read_chunk(struct adapter *adapter, u32 addr, u8 *buf, u16 len)
+{
+	u32 bank;
+
+	bank = 0;
+
+	if (adapter->dw_sram_type == 0x20000) {
+		bank = (addr & 0x18000) << 0x0d;
+	}
+
+	if (adapter->dw_sram_type == 0x00000) {
+		if ((addr >> 0x0f) == 0)
+			bank = 0x20000000;
+		else
+			bank = 0x10000000;
+	}
+
+	flex_sram_read(adapter, bank, addr & 0x7fff, buf, len);
+}
+
+static void sram_read(struct adapter *adapter, u32 addr, u8 *buf, u32 len)
+{
+	u32 length;
+
+	while (len != 0) {
+		length = len;
+
+		// check if the address range belongs to the same 
+		// 32K memory chip. If not, the data is read from 
+		// one chip at a time.
+		if ((addr >> 0x0f) != ((addr + len - 1) >> 0x0f)) {
+			length = (((addr >> 0x0f) + 1) << 0x0f) - addr;
+		}
+
+		sram_read_chunk(adapter, addr, buf, length);
+
+		addr = addr + length;
+		buf = buf + length;
+		len = len - length;
+	}
+}
+
+static void sram_write(struct adapter *adapter, u32 addr, u8 *buf, u32 len)
+{
+	u32 length;
+
+	while (len != 0) {
+		length = len;
+
+		// check if the address range belongs to the same 
+		// 32K memory chip. If not, the data is written to
+		// one chip at a time.
+		if ((addr >> 0x0f) != ((addr + len - 1) >> 0x0f)) {
+			length = (((addr >> 0x0f) + 1) << 0x0f) - addr;
+		}
+
+		sram_write_chunk(adapter, addr, buf, length);
+
+		addr = addr + length;
+		buf = buf + length;
+		len = len - length;
+	}
+}
+
+static void sram_set_size(struct adapter *adapter, u32 mask)
+{
+	write_reg_dw(adapter, 0x71c, (mask | (~0x30000 & read_reg_dw(adapter, 0x71c))));
+}
+
+static void sram_init(struct adapter *adapter)
+{
+	u32 tmp;
+
+	tmp = read_reg_dw(adapter, 0x71c);
+
+	write_reg_dw(adapter, 0x71c, 1);
+
+	if (read_reg_dw(adapter, 0x71c) != 0) {
+		write_reg_dw(adapter, 0x71c, tmp);
+
+		adapter->dw_sram_type = tmp & 0x30000;
+
+		ddprintk("%s: dw_sram_type = %x\n", __FUNCTION__, adapter->dw_sram_type);
+
+	} else {
+
+		adapter->dw_sram_type = 0x10000;
+
+		ddprintk("%s: dw_sram_type = %x\n", __FUNCTION__, adapter->dw_sram_type);
+	}
+
+	/* return value is never used? */
+/*	return adapter->dw_sram_type; */
+}
+
+static int sram_test_location(struct adapter *adapter, u32 mask, u32 addr)
+{
+	u8 tmp1, tmp2;
+
+	dprintk("%s: mask = %x, addr = %x\n", __FUNCTION__, mask, addr);
+
+	sram_set_size(adapter, mask);
+	sram_init(adapter);
+
+	tmp2 = 0xa5;
+	tmp1 = 0x4f;
+
+	sram_write(adapter, addr, &tmp2, 1);
+	sram_write(adapter, addr + 4, &tmp1, 1);
+
+	tmp2 = 0;
+
+	mdelay(20);
+
+	sram_read(adapter, addr, &tmp2, 1);
+	sram_read(adapter, addr, &tmp2, 1);
+
+	dprintk("%s: wrote 0xa5, read 0x%2x\n", __FUNCTION__, tmp2);
+
+	if (tmp2 != 0xa5)
+		return 0;
+
+	tmp2 = 0x5a;
+	tmp1 = 0xf4;
+
+	sram_write(adapter, addr, &tmp2, 1);
+	sram_write(adapter, addr + 4, &tmp1, 1);
+
+	tmp2 = 0;
+
+	mdelay(20);
+
+	sram_read(adapter, addr, &tmp2, 1);
+	sram_read(adapter, addr, &tmp2, 1);
+
+	dprintk("%s: wrote 0x5a, read 0x%2x\n", __FUNCTION__, tmp2);
+
+	if (tmp2 != 0x5a)
+		return 0;
+
+	return 1;
+}
+
+static u32 sram_length(struct adapter *adapter)
+{
+	if (adapter->dw_sram_type == 0x10000)
+		return 32768;	//  32K
+	if (adapter->dw_sram_type == 0x00000)
+		return 65536;	//  64K        
+	if (adapter->dw_sram_type == 0x20000)
+		return 131072;	// 128K
+
+	return 32768;		// 32K
+}
+
+/* FlexcopII can work with 32K, 64K or 128K of external SRAM memory.
+    - for 128K there are 4x32K chips at bank 0,1,2,3.
+    - for  64K there are 2x32K chips at bank 1,2.
+    - for  32K there is one 32K chip at bank 0.
+
+   FlexCop works only with one bank at a time. The bank is selected
+   by bits 28-29 of the 0x700 register.
+  
+   bank 0 covers addresses 0x00000-0x07fff
+   bank 1 covers addresses 0x08000-0x0ffff
+   bank 2 covers addresses 0x10000-0x17fff
+   bank 3 covers addresses 0x18000-0x1ffff
+*/
+static int sram_detect_for_flex2(struct adapter *adapter)
+{
+	u32 tmp, tmp2, tmp3;
+
+	dprintk("%s:\n", __FUNCTION__);
+
+	tmp = read_reg_dw(adapter, 0x208);
+	write_reg_dw(adapter, 0x208, 0);
+
+	tmp2 = read_reg_dw(adapter, 0x71c);
+
+	dprintk("%s: tmp2 = %x\n", __FUNCTION__, tmp2);
+
+	write_reg_dw(adapter, 0x71c, 1);
+
+	tmp3 = read_reg_dw(adapter, 0x71c);
+
+	dprintk("%s: tmp3 = %x\n", __FUNCTION__, tmp3);
+
+	write_reg_dw(adapter, 0x71c, tmp2);
+
+	// check for internal SRAM ???
+	tmp3--;
+	if (tmp3 != 0) {
+		sram_set_size(adapter, 0x10000);
+		sram_init(adapter);
+		write_reg_dw(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 32K\n", __FUNCTION__);
+
+		return 32;
+	}
+
+	if (sram_test_location(adapter, 0x20000, 0x18000) != 0) {
+		sram_set_size(adapter, 0x20000);
+		sram_init(adapter);
+		write_reg_dw(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 128K\n", __FUNCTION__);
+
+		return 128;
+	}
+
+	if (sram_test_location(adapter, 0x00000, 0x10000) != 0) {
+		sram_set_size(adapter, 0x00000);
+		sram_init(adapter);
+		write_reg_dw(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 64K\n", __FUNCTION__);
+
+		return 64;
+	}
+
+	if (sram_test_location(adapter, 0x10000, 0x00000) != 0) {
+		sram_set_size(adapter, 0x10000);
+		sram_init(adapter);
+		write_reg_dw(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 32K\n", __FUNCTION__);
+
+		return 32;
+	}
+
+	sram_set_size(adapter, 0x10000);
+	sram_init(adapter);
+	write_reg_dw(adapter, 0x208, tmp);
+
+	dprintk("%s: SRAM detection failed. Set to 32K \n", __FUNCTION__);
+
+	return 0;
+}
+
+static void sll_detect_sram_size(struct adapter *adapter)
+{
+	sram_detect_for_flex2(adapter);
+}
+
+/* EEPROM (Skystar2 has one "24LC08B" chip on board) */
+/*
+static int eeprom_write(struct adapter *adapter, u16 addr, u8 *buf, u16 len)
+{
+	return flex_i2c_write(adapter, 0x20000000, 0x50, addr, buf, len);
+}
+*/
+
+static int eeprom_read(struct adapter *adapter, u16 addr, u8 *buf, u16 len)
+{
+	return flex_i2c_read(adapter, 0x20000000, 0x50, addr, buf, len);
+}
+
+static u8 calc_lrc(u8 *buf, int len)
+{
+	int i;
+	u8 sum;
+
+	sum = 0;
+
+	for (i = 0; i < len; i++)
+		sum = sum ^ buf[i];
+
+	return sum;
+}
+
+static int eeprom_lrc_read(struct adapter *adapter, u32 addr, u32 len, u8 *buf, int retries)
+{
+	int i;
+
+	for (i = 0; i < retries; i++) {
+		if (eeprom_read(adapter, addr, buf, len) == len) {
+			if (calc_lrc(buf, len - 1) == buf[len - 1])
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+/*
+static int eeprom_lrc_write(struct adapter *adapter, u32 addr, u32 len, u8 *wbuf, u8 *rbuf, int retries)
+{
+	int i;
+
+	for (i = 0; i < retries; i++) {
+		if (eeprom_write(adapter, addr, wbuf, len) == len) {
+			if (eeprom_lrc_read(adapter, addr, len, rbuf, retries) == 1)
+				return 1;
+		}
+	}
+
+	return 0;
+}
+*/
+
+
+/* These functions could be used to unlock SkyStar2 cards. */
+
+/*
+static int eeprom_writeKey(struct adapter *adapter, u8 *key, u32 len)
+{
+	u8 rbuf[20];
+	u8 wbuf[20];
+
+	if (len != 16)
+		return 0;
+
+	memcpy(wbuf, key, len);
+
+	wbuf[16] = 0;
+	wbuf[17] = 0;
+	wbuf[18] = 0;
+	wbuf[19] = calc_lrc(wbuf, 19);
+
+	return eeprom_lrc_write(adapter, 0x3e4, 20, wbuf, rbuf, 4);
+}
+
+static int eeprom_readKey(struct adapter *adapter, u8 *key, u32 len)
+{
+	u8 buf[20];
+
+	if (len != 16)
+		return 0;
+
+	if (eeprom_lrc_read(adapter, 0x3e4, 20, buf, 4) == 0)
+		return 0;
+
+	memcpy(key, buf, len);
+
+	return 1;
+}
+*/
+
+static int eeprom_get_mac_addr(struct adapter *adapter, char type, u8 *mac)
+{
+	u8 tmp[8];
+
+	if (eeprom_lrc_read(adapter, 0x3f8, 8, tmp, 4) != 0) {
+		if (type != 0) {
+			mac[0] = tmp[0];
+			mac[1] = tmp[1];
+			mac[2] = tmp[2];
+			mac[3] = 0xfe;
+			mac[4] = 0xff;
+			mac[5] = tmp[3];
+			mac[6] = tmp[4];
+			mac[7] = tmp[5];
+
+		} else {
+
+			mac[0] = tmp[0];
+			mac[1] = tmp[1];
+			mac[2] = tmp[2];
+			mac[3] = tmp[3];
+			mac[4] = tmp[4];
+			mac[5] = tmp[5];
+		}
+
+		return 1;
+
+	} else {
+
+		if (type == 0) {
+			memset(mac, 0, 6);
+
+		} else {
+
+			memset(mac, 0, 8);
+		}
+
+		return 0;
+	}
+}
+
+/*
+static char eeprom_set_mac_addr(struct adapter *adapter, char type, u8 *mac)
+{
+	u8 tmp[8];
+
+	if (type != 0) {
+		tmp[0] = mac[0];
+		tmp[1] = mac[1];
+		tmp[2] = mac[2];
+		tmp[3] = mac[5];
+		tmp[4] = mac[6];
+		tmp[5] = mac[7];
+
+	} else {
+
+		tmp[0] = mac[0];
+		tmp[1] = mac[1];
+		tmp[2] = mac[2];
+		tmp[3] = mac[3];
+		tmp[4] = mac[4];
+		tmp[5] = mac[5];
+	}
+
+	tmp[6] = 0;
+	tmp[7] = calc_lrc(tmp, 7);
+
+	if (eeprom_write(adapter, 0x3f8, tmp, 8) == 8)
+		return 1;
+
+	return 0;
+}
+*/
+
+/* PID filter */
+
+/* every flexcop has 6 "lower" hw PID filters     */
+/* these are enabled by setting bits 0-5 of 0x208 */
+/* for the 32 additional filters we have to select one */
+/* of them through 0x310 and modify through 0x314 */
+/* op: 0=disable, 1=enable */
+static void filter_enable_hw_filter(struct adapter *adapter, int id, u8 op)
+{
+	dprintk("%s: id=%d op=%d\n", __FUNCTION__, id, op);
+	if (id <= 5) {
+		u32 mask = (0x00000001 << id);
+		write_reg_bitfield(adapter, 0x208, mask, op ? mask : 0);
+	} else {
+		/* select */
+		write_reg_bitfield(adapter, 0x310, 0x1f, (id - 6) & 0x1f);
+		/* modify */
+		write_reg_bitfield(adapter, 0x314, 0x00006000, op ? 0x00004000 : 0);
+	}
+}
+
+/* this sets the PID that should pass the specified filter */
+static void pid_set_hw_pid(struct adapter *adapter, int id, u16 pid)
+{
+	dprintk("%s: id=%d  pid=%d\n", __FUNCTION__, id, pid);
+	if (id <= 5) {
+		u32 adr = 0x300 + ((id & 6) << 1);
+		int shift = (id & 1) ? 16 : 0;
+		dprintk("%s: id=%d  addr=%x %c  pid=%d\n", __FUNCTION__, id, adr, (id & 1) ? 'h' : 'l', pid);
+		write_reg_bitfield(adapter, adr, (0x7fff) << shift, (pid & 0x1fff) << shift);
+	} else {
+		/* select */
+		write_reg_bitfield(adapter, 0x310, 0x1f, (id - 6) & 0x1f);
+		/* modify */
+		write_reg_bitfield(adapter, 0x314, 0x1fff, pid & 0x1fff);
+	}
+}
+
+
+/*
+static void filter_enable_null_filter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	write_reg_bitfield(adapter, 0x208, 0x00000040, op?0x00000040:0);
+}
+*/
+
+static void filter_enable_mask_filter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	write_reg_bitfield(adapter, 0x208, 0x00000080, op ? 0x00000080 : 0);
+}
+
+
+static void ctrl_enable_mac(struct adapter *adapter, u32 op)
+{
+	write_reg_bitfield(adapter, 0x208, 0x00004000, op ? 0x00004000 : 0);
+}
+
+static int ca_set_mac_dst_addr_filter(struct adapter *adapter, u8 *mac)
+{
+	u32 tmp1, tmp2;
+
+	tmp1 = (mac[3] << 0x18) | (mac[2] << 0x10) | (mac[1] << 0x08) | mac[0];
+	tmp2 = (mac[5] << 0x08) | mac[4];
+
+	write_reg_dw(adapter, 0x418, tmp1);
+	write_reg_dw(adapter, 0x41c, tmp2);
+
+	return 0;
+}
+
+/*
+static void set_ignore_mac_filter(struct adapter *adapter, u8 op)
+{
+	if (op != 0) {
+		write_reg_bitfield(adapter, 0x208, 0x00004000, 0);
+		adapter->mac_filter = 1;
+	} else {
+		if (adapter->mac_filter != 0) {
+			adapter->mac_filter = 0;
+			write_reg_bitfield(adapter, 0x208, 0x00004000, 0x00004000);
+		}
+	}
+}
+*/
+
+/*
+static void check_null_filter_enable(struct adapter *adapter)
+{
+	filter_enable_null_filter(adapter, 1);
+	filter_enable_mask_filter(adapter, 1);
+}
+*/
+
+static void pid_set_group_pid(struct adapter *adapter, u16 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+	value = (pid & 0x3fff) | (read_reg_dw(adapter, 0x30c) & 0xffff0000);
+	write_reg_dw(adapter, 0x30c, value);
+}
+
+static void pid_set_group_mask(struct adapter *adapter, u16 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+	value = ((pid & 0x3fff) << 0x10) | (read_reg_dw(adapter, 0x30c) & 0xffff);
+	write_reg_dw(adapter, 0x30c, value);
+}
+
+/*
+static int pid_get_group_pid(struct adapter *adapter)
+{
+	return read_reg_dw(adapter, 0x30c) & 0x00001fff;
+}
+
+static int pid_get_group_mask(struct adapter *adapter)
+{
+	return (read_reg_dw(adapter, 0x30c) >> 0x10)& 0x00001fff;
+}
+*/
+
+/*
+static void reset_hardware_pid_filter(struct adapter *adapter)
+{
+	pid_set_stream1_pid(adapter, 0x1fff);
+
+	pid_set_stream2_pid(adapter, 0x1fff);
+	filter_enable_stream2_filter(adapter, 0);
+
+	pid_set_pcr_pid(adapter, 0x1fff);
+	filter_enable_pcr_filter(adapter, 0);
+
+	pid_set_pmt_pid(adapter, 0x1fff);
+	filter_enable_pmt_filter(adapter, 0);
+
+	pid_set_ecm_pid(adapter, 0x1fff);
+	filter_enable_ecm_filter(adapter, 0);
+
+	pid_set_emm_pid(adapter, 0x1fff);
+	filter_enable_emm_filter(adapter, 0);
+}
+*/
+
+static void init_pids(struct adapter *adapter)
+{
+	int i;
+
+	adapter->pid_count = 0;
+	adapter->whole_bandwidth_count = 0;
+	for (i = 0; i < adapter->useable_hw_filters; i++) {
+		dprintk("%s: setting filter %d to 0x1fff\n", __FUNCTION__, i);
+		adapter->hw_pids[i] = 0x1fff;
+		pid_set_hw_pid(adapter, i, 0x1fff);
+}
+
+	pid_set_group_pid(adapter, 0);
+	pid_set_group_mask(adapter, 0x1fe0);
+}
+
+static void open_whole_bandwidth(struct adapter *adapter)
+{
+	dprintk("%s:\n", __FUNCTION__);
+	pid_set_group_pid(adapter, 0);
+	pid_set_group_mask(adapter, 0);
+/*
+	filter_enable_mask_filter(adapter, 1);
+*/
+}
+
+static void close_whole_bandwidth(struct adapter *adapter)
+{
+	dprintk("%s:\n", __FUNCTION__);
+	pid_set_group_pid(adapter, 0);
+	pid_set_group_mask(adapter, 0x1fe0);
+/*
+	filter_enable_mask_filter(adapter, 1);
+*/
+}
+
+static void whole_bandwidth_inc(struct adapter *adapter)
+{
+	if (adapter->whole_bandwidth_count++ == 0)
+		open_whole_bandwidth(adapter);
+}
+
+static void whole_bandwidth_dec(struct adapter *adapter)
+{
+	if (--adapter->whole_bandwidth_count <= 0)
+		close_whole_bandwidth(adapter);
+}
+
+/* The specified PID has to be let through the
+   hw filters.
+   We try to allocate an hardware filter and open whole
+   bandwidth when allocation is impossible.
+   All pids<=0x1f pass through the group filter.
+   Returns 1 on success, -1 on error */
+static int add_hw_pid(struct adapter *adapter, u16 pid)
+{
+	int i;
+
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid <= 0x1f)
+		return 1;
+
+	/* we can't use a filter for 0x2000, so no search */
+	if (pid != 0x2000) {
+		/* find an unused hardware filter */
+		for (i = 0; i < adapter->useable_hw_filters; i++) {
+			dprintk("%s: pid=%d searching slot=%d\n", __FUNCTION__, pid, i);
+			if (adapter->hw_pids[i] == 0x1fff) {
+				dprintk("%s: pid=%d slot=%d\n", __FUNCTION__, pid, i);
+				adapter->hw_pids[i] = pid;
+				pid_set_hw_pid(adapter, i, pid);
+				filter_enable_hw_filter(adapter, i, 1);
+		return 1;
+	}
+	}
+	}
+	/* if we have not used a filter, this pid depends on whole bandwidth */
+	dprintk("%s: pid=%d whole_bandwidth\n", __FUNCTION__, pid);
+	whole_bandwidth_inc(adapter);
+		return 1;
+	}
+
+/* returns -1 if the pid was not present in the filters */
+static int remove_hw_pid(struct adapter *adapter, u16 pid)
+{
+	int i;
+
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid <= 0x1f)
+		return 1;
+
+	/* we can't use a filter for 0x2000, so no search */
+	if (pid != 0x2000) {
+		for (i = 0; i < adapter->useable_hw_filters; i++) {
+			dprintk("%s: pid=%d searching slot=%d\n", __FUNCTION__, pid, i);
+			if (adapter->hw_pids[i] == pid) {	// find the pid slot
+				dprintk("%s: pid=%d slot=%d\n", __FUNCTION__, pid, i);
+				adapter->hw_pids[i] = 0x1fff;
+				pid_set_hw_pid(adapter, i, 0x1fff);
+				filter_enable_hw_filter(adapter, i, 0);
+		return 1;
+	}
+	}
+	}
+	/* if we have not used a filter, this pid depended on whole bandwith */
+	dprintk("%s: pid=%d whole_bandwidth\n", __FUNCTION__, pid);
+	whole_bandwidth_dec(adapter);
+		return 1;
+	}
+
+/* Adds a PID to the filters.
+   Adding a pid more than once is possible, we keep reference counts.
+   Whole stream available through pid==0x2000.
+   Returns 1 on success, -1 on error */
+static int add_pid(struct adapter *adapter, u16 pid)
+{
+	int i;
+
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid > 0x1ffe && pid != 0x2000)
+		return -1;
+
+	// check if the pid is already present
+	for (i = 0; i < adapter->pid_count; i++)
+		if (adapter->pid_list[i] == pid) {
+			adapter->pid_rc[i]++;	// increment ref counter
+		return 1;
+		}
+
+	if (adapter->pid_count == N_PID_SLOTS)
+		return -1;	// no more pids can be added
+	adapter->pid_list[adapter->pid_count] = pid;	// register pid
+	adapter->pid_rc[adapter->pid_count] = 1;
+	adapter->pid_count++;
+	// hardware setting
+	add_hw_pid(adapter, pid);
+
+			return 1;
+		}
+
+/* Removes a PID from the filters. */
+static int remove_pid(struct adapter *adapter, u16 pid)
+{
+	int i;
+
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid > 0x1ffe && pid != 0x2000)
+		return -1;
+
+	// check if the pid is present (it must be!)
+	for (i = 0; i < adapter->pid_count; i++) {
+		if (adapter->pid_list[i] == pid) {
+			adapter->pid_rc[i]--;
+			if (adapter->pid_rc[i] <= 0) {
+				// remove from the list
+				adapter->pid_count--;
+				adapter->pid_list[i]=adapter->pid_list[adapter->pid_count];
+				adapter->pid_rc[i] = adapter->pid_rc[adapter->pid_count];
+				// hardware setting
+				remove_hw_pid(adapter, pid);
+			}
+			return 1;
+		}
+	}
+
+	return -1;
+}
+
+
+/* dma & irq */
+static void ctrl_enable_smc(struct adapter *adapter, u32 op)
+{
+	write_reg_bitfield(adapter, 0x208, 0x00000800, op ? 0x00000800 : 0);
+}
+
+static void dma_enable_disable_irq(struct adapter *adapter, u32 flag1, u32 flag2, u32 flag3)
+{
+	adapter->dma_ctrl = adapter->dma_ctrl & 0x000f0000;
+
+	if (flag1 == 0) {
+		if (flag2 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00010000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00010000;
+
+		if (flag3 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00020000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00020000;
+
+	} else {
+
+		if (flag2 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00040000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00040000;
+
+		if (flag3 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00080000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00080000;
+	}
+}
+
+static void irq_dma_enable_disable_irq(struct adapter *adapter, u32 op)
+{
+	u32 value;
+
+	value = read_reg_dw(adapter, 0x208) & 0xfff0ffff;
+
+	if (op != 0)
+		value = value | (adapter->dma_ctrl & 0x000f0000);
+
+	write_reg_dw(adapter, 0x208, value);
+}
+
+/* FlexCopII has 2 dma channels. DMA1 is used to transfer TS data to
+   system memory.
+
+   The DMA1 buffer is divided in 2 subbuffers of equal size.
+   FlexCopII will transfer TS data to one subbuffer, signal an interrupt
+   when the subbuffer is full and continue fillig the second subbuffer.
+
+   For DMA1:
+       subbuffer size in 32-bit words is stored in the first 24 bits of
+       register 0x004. The last 8 bits of register 0x004 contain the number
+       of subbuffers.
+       
+       the first 30 bits of register 0x000 contain the address of the first
+       subbuffer. The last 2 bits contain 0, when dma1 is disabled and 1,
+       when dma1 is enabled.
+
+       the first 30 bits of register 0x00c contain the address of the second
+       subbuffer. the last 2 bits contain 1.
+
+       register 0x008 will contain the address of the subbuffer that was filled
+       with TS data, when FlexCopII will generate an interrupt.
+
+   For DMA2:
+       subbuffer size in 32-bit words is stored in the first 24 bits of
+       register 0x014. The last 8 bits of register 0x014 contain the number
+       of subbuffers.
+       
+       the first 30 bits of register 0x010 contain the address of the first
+       subbuffer.  The last 2 bits contain 0, when dma1 is disabled and 1,
+       when dma1 is enabled.
+
+       the first 30 bits of register 0x01c contain the address of the second
+       subbuffer. the last 2 bits contain 1.
+
+       register 0x018 contains the address of the subbuffer that was filled
+       with TS data, when FlexCopII generates an interrupt.
+*/
+static int dma_init_dma(struct adapter *adapter, u32 dma_channel)
+{
+	u32 subbuffers, subbufsize, subbuf0, subbuf1;
+
+	if (dma_channel == 0) {
+		dprintk("%s: Initializing DMA1 channel\n", __FUNCTION__);
+
+		subbuffers = 2;
+
+		subbufsize = (((adapter->dmaq1.buffer_size / 2) / 4) << 8) | subbuffers;
+
+		subbuf0 = adapter->dmaq1.bus_addr & 0xfffffffc;
+
+		subbuf1 = ((adapter->dmaq1.bus_addr + adapter->dmaq1.buffer_size / 2) & 0xfffffffc) | 1;
+
+		dprintk("%s: first subbuffer address = 0x%x\n", __FUNCTION__, subbuf0);
+		udelay(1000);
+		write_reg_dw(adapter, 0x000, subbuf0);
+
+		dprintk("%s: subbuffer size = 0x%x\n", __FUNCTION__, (subbufsize >> 8) * 4);
+		udelay(1000);
+		write_reg_dw(adapter, 0x004, subbufsize);
+
+		dprintk("%s: second subbuffer address = 0x%x\n", __FUNCTION__, subbuf1);
+		udelay(1000);
+		write_reg_dw(adapter, 0x00c, subbuf1);
+
+		dprintk("%s: counter = 0x%x\n", __FUNCTION__, adapter->dmaq1.bus_addr & 0xfffffffc);
+		write_reg_dw(adapter, 0x008, adapter->dmaq1.bus_addr & 0xfffffffc);
+		udelay(1000);
+
+		dma_enable_disable_irq(adapter, 0, 1, subbuffers ? 1 : 0);
+
+		irq_dma_enable_disable_irq(adapter, 1);
+
+		sram_set_media_dest(adapter, 1);
+		sram_set_net_dest(adapter, 1);
+		sram_set_cai_dest(adapter, 2);
+		sram_set_cao_dest(adapter, 2);
+	}
+
+	if (dma_channel == 1) {
+		dprintk("%s: Initializing DMA2 channel\n", __FUNCTION__);
+
+		subbuffers = 2;
+
+		subbufsize = (((adapter->dmaq2.buffer_size / 2) / 4) << 8) | subbuffers;
+
+		subbuf0 = adapter->dmaq2.bus_addr & 0xfffffffc;
+
+		subbuf1 = ((adapter->dmaq2.bus_addr + adapter->dmaq2.buffer_size / 2) & 0xfffffffc) | 1;
+
+		dprintk("%s: first subbuffer address = 0x%x\n", __FUNCTION__, subbuf0);
+		udelay(1000);
+		write_reg_dw(adapter, 0x010, subbuf0);
+
+		dprintk("%s: subbuffer size = 0x%x\n", __FUNCTION__, (subbufsize >> 8) * 4);
+		udelay(1000);
+		write_reg_dw(adapter, 0x014, subbufsize);
+
+		dprintk("%s: second buffer address = 0x%x\n", __FUNCTION__, subbuf1);
+		udelay(1000);
+		write_reg_dw(adapter, 0x01c, subbuf1);
+
+		sram_set_cai_dest(adapter, 2);
+	}
+
+	return 0;
+}
+
+static void ctrl_enable_receive_data(struct adapter *adapter, u32 op)
+{
+	if (op == 0) {
+		write_reg_bitfield(adapter, 0x208, 0x00008000, 0);
+		adapter->dma_status = adapter->dma_status & ~0x00000004;
+	} else {
+		write_reg_bitfield(adapter, 0x208, 0x00008000, 0x00008000);
+		adapter->dma_status = adapter->dma_status | 0x00000004;
+	}
+}
+
+/* bit 0 of dma_mask is set to 1 if dma1 channel has to be enabled/disabled
+   bit 1 of dma_mask is set to 1 if dma2 channel has to be enabled/disabled
+*/
+static void dma_start_stop(struct adapter *adapter, u32 dma_mask, int start_stop)
+{
+	u32 dma_enable, dma1_enable, dma2_enable;
+
+	dprintk("%s: dma_mask=%x\n", __FUNCTION__, dma_mask);
+
+	if (start_stop == 1) {
+		dprintk("%s: starting dma\n", __FUNCTION__);
+
+		dma1_enable = 0;
+		dma2_enable = 0;
+
+		if (((dma_mask & 1) != 0) && ((adapter->dma_status & 1) == 0) && (adapter->dmaq1.bus_addr != 0)) {
+			adapter->dma_status = adapter->dma_status | 1;
+			dma1_enable = 1;
+		}
+
+		if (((dma_mask & 2) != 0) && ((adapter->dma_status & 2) == 0) && (adapter->dmaq2.bus_addr != 0)) {
+			adapter->dma_status = adapter->dma_status | 2;
+			dma2_enable = 1;
+		}
+		// enable dma1 and dma2
+		if ((dma1_enable == 1) && (dma2_enable == 1)) {
+			write_reg_dw(adapter, 0x000, adapter->dmaq1.bus_addr | 1);
+			write_reg_dw(adapter, 0x00c, (adapter->dmaq1.bus_addr + adapter->dmaq1.buffer_size / 2) | 1);
+			write_reg_dw(adapter, 0x010, adapter->dmaq2.bus_addr | 1);
+
+			ctrl_enable_receive_data(adapter, 1);
+
+			return;
+		}
+		// enable dma1
+		if ((dma1_enable == 1) && (dma2_enable == 0)) {
+			write_reg_dw(adapter, 0x000, adapter->dmaq1.bus_addr | 1);
+			write_reg_dw(adapter, 0x00c, (adapter->dmaq1.bus_addr + adapter->dmaq1.buffer_size / 2) | 1);
+
+			ctrl_enable_receive_data(adapter, 1);
+
+			return;
+		}
+		// enable dma2
+		if ((dma1_enable == 0) && (dma2_enable == 1)) {
+			write_reg_dw(adapter, 0x010, adapter->dmaq2.bus_addr | 1);
+
+			ctrl_enable_receive_data(adapter, 1);
+
+			return;
+		}
+		// start dma
+		if ((dma1_enable == 0) && (dma2_enable == 0)) {
+			ctrl_enable_receive_data(adapter, 1);
+
+			return;
+		}
+
+	} else {
+
+		dprintk("%s: stopping dma\n", __FUNCTION__);
+
+		dma_enable = adapter->dma_status & 0x00000003;
+
+		if (((dma_mask & 1) != 0) && ((adapter->dma_status & 1) != 0)) {
+			dma_enable = dma_enable & 0xfffffffe;
+		}
+
+		if (((dma_mask & 2) != 0) && ((adapter->dma_status & 2) != 0)) {
+			dma_enable = dma_enable & 0xfffffffd;
+		}
+		//stop dma
+		if ((dma_enable == 0) && ((adapter->dma_status & 4) != 0)) {
+			ctrl_enable_receive_data(adapter, 0);
+
+			udelay(3000);
+		}
+		//disable dma1
+		if (((dma_mask & 1) != 0) && ((adapter->dma_status & 1) != 0) && (adapter->dmaq1.bus_addr != 0)) {
+			write_reg_dw(adapter, 0x000, adapter->dmaq1.bus_addr);
+			write_reg_dw(adapter, 0x00c, (adapter->dmaq1.bus_addr + adapter->dmaq1.buffer_size / 2) | 1);
+
+			adapter->dma_status = adapter->dma_status & ~0x00000001;
+		}
+		//disable dma2
+		if (((dma_mask & 2) != 0) && ((adapter->dma_status & 2) != 0) && (adapter->dmaq2.bus_addr != 0)) {
+			write_reg_dw(adapter, 0x010, adapter->dmaq2.bus_addr);
+
+			adapter->dma_status = adapter->dma_status & ~0x00000002;
+		}
+	}
+}
+
+static void open_stream(struct adapter *adapter, u16 pid)
+{
+	u32 dma_mask;
+
+	++adapter->capturing;
+
+	filter_enable_mask_filter(adapter, 1);
+
+	add_pid(adapter, pid);
+
+	dprintk("%s: adapter->dma_status=%x\n", __FUNCTION__, adapter->dma_status);
+
+	if ((adapter->dma_status & 7) != 7) {
+		dma_mask = 0;
+
+		if (((adapter->dma_status & 0x10000000) != 0) && ((adapter->dma_status & 1) == 0)) {
+			dma_mask = dma_mask | 1;
+
+			adapter->dmaq1.head = 0;
+			adapter->dmaq1.tail = 0;
+
+			memset(adapter->dmaq1.buffer, 0, adapter->dmaq1.buffer_size);
+		}
+
+		if (((adapter->dma_status & 0x20000000) != 0) && ((adapter->dma_status & 2) == 0)) {
+			dma_mask = dma_mask | 2;
+
+			adapter->dmaq2.head = 0;
+			adapter->dmaq2.tail = 0;
+		}
+
+		if (dma_mask != 0) {
+			irq_dma_enable_disable_irq(adapter, 1);
+
+			dma_start_stop(adapter, dma_mask, 1);
+		}
+	}
+}
+
+static void close_stream(struct adapter *adapter, u16 pid)
+{
+	if (adapter->capturing > 0)
+		--adapter->capturing;
+
+	dprintk("%s: dma_status=%x\n", __FUNCTION__, adapter->dma_status);
+
+	if (adapter->capturing == 0) {
+		u32 dma_mask = 0;
+
+	if ((adapter->dma_status & 1) != 0)
+		dma_mask = dma_mask | 0x00000001;
+	if ((adapter->dma_status & 2) != 0)
+		dma_mask = dma_mask | 0x00000002;
+
+	if (dma_mask != 0) {
+			dma_start_stop(adapter, dma_mask, 0);
+	}
+	}
+	remove_pid(adapter, pid);
+}
+
+static void interrupt_service_dma1(struct adapter *adapter)
+{
+	struct dvb_demux *dvbdmx = &adapter->demux;
+
+	int n_cur_dma_counter;
+	u32 n_num_bytes_parsed;
+	u32 n_num_new_bytes_transferred;
+	u32 dw_default_packet_size = 188;
+	u8 gb_tmp_buffer[188];
+	u8 *pb_dma_buf_cur_pos;
+
+	n_cur_dma_counter = readl(adapter->io_mem + 0x008) - adapter->dmaq1.bus_addr;
+	n_cur_dma_counter = (n_cur_dma_counter / dw_default_packet_size) * dw_default_packet_size;
+
+	if ((n_cur_dma_counter < 0) || (n_cur_dma_counter > adapter->dmaq1.buffer_size)) {
+		dprintk("%s: dma counter outside dma buffer\n", __FUNCTION__);
+		return;
+	}
+
+	adapter->dmaq1.head = n_cur_dma_counter;
+
+	if (adapter->dmaq1.tail <= n_cur_dma_counter) {
+		n_num_new_bytes_transferred = n_cur_dma_counter - adapter->dmaq1.tail;
+
+	} else {
+
+		n_num_new_bytes_transferred = (adapter->dmaq1.buffer_size - adapter->dmaq1.tail) + n_cur_dma_counter;
+	}
+
+	ddprintk("%s: n_cur_dma_counter = %d\n", __FUNCTION__, n_cur_dma_counter);
+	ddprintk("%s: dmaq1.tail        = %d\n", __FUNCTION__, adapter->dmaq1.tail);
+	ddprintk("%s: bytes_transferred = %d\n", __FUNCTION__, n_num_new_bytes_transferred);
+
+	if (n_num_new_bytes_transferred < dw_default_packet_size)
+		return;
+
+	n_num_bytes_parsed = 0;
+
+	while (n_num_bytes_parsed < n_num_new_bytes_transferred) {
+		pb_dma_buf_cur_pos = adapter->dmaq1.buffer + adapter->dmaq1.tail;
+
+		if (adapter->dmaq1.buffer + adapter->dmaq1.buffer_size < adapter->dmaq1.buffer + adapter->dmaq1.tail + 188) {
+			memcpy(gb_tmp_buffer, adapter->dmaq1.buffer + adapter->dmaq1.tail,
+			       adapter->dmaq1.buffer_size - adapter->dmaq1.tail);
+			memcpy(gb_tmp_buffer + (adapter->dmaq1.buffer_size - adapter->dmaq1.tail), adapter->dmaq1.buffer,
+			       (188 - (adapter->dmaq1.buffer_size - adapter->dmaq1.tail)));
+
+			pb_dma_buf_cur_pos = gb_tmp_buffer;
+		}
+
+		if (adapter->capturing != 0) {
+			dvb_dmx_swfilter_packets(dvbdmx, pb_dma_buf_cur_pos, dw_default_packet_size / 188);
+		}
+
+		n_num_bytes_parsed = n_num_bytes_parsed + dw_default_packet_size;
+
+		adapter->dmaq1.tail = adapter->dmaq1.tail + dw_default_packet_size;
+
+		if (adapter->dmaq1.tail >= adapter->dmaq1.buffer_size)
+			adapter->dmaq1.tail = adapter->dmaq1.tail - adapter->dmaq1.buffer_size;
+	};
+}
+
+static void interrupt_service_dma2(struct adapter *adapter)
+{
+	printk("%s:\n", __FUNCTION__);
+}
+
+static irqreturn_t isr(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct adapter *tmp = dev_id;
+
+	u32 value;
+
+	ddprintk("%s:\n", __FUNCTION__);
+
+	spin_lock_irq(&tmp->lock);
+
+	if (0 == ((value = read_reg_dw(tmp, 0x20c)) & 0x0f)) {
+		spin_unlock_irq(&tmp->lock);
+		return IRQ_NONE;
+	}
+	
+	while (value != 0) {
+		if ((value & 0x03) != 0)
+			interrupt_service_dma1(tmp);
+		if ((value & 0x0c) != 0)
+			interrupt_service_dma2(tmp);
+		value = read_reg_dw(tmp, 0x20c) & 0x0f;
+	}
+
+	spin_unlock_irq(&tmp->lock);
+	return IRQ_HANDLED;
+}
+
+static int init_dma_queue_one(struct adapter *adapter, struct dmaq *dmaq,
+			      int size, int dmaq_offset)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	dma_addr_t dma_addr;
+
+	dmaq->head = 0;
+	dmaq->tail = 0;
+
+	dmaq->buffer = pci_alloc_consistent(pdev, size + 0x80, &dma_addr);
+	if (!dmaq->buffer)
+		return -ENOMEM;
+
+	dmaq->bus_addr = dma_addr;
+	dmaq->buffer_size = size;
+
+	dma_init_dma(adapter, dmaq_offset);
+
+	ddprintk("%s: allocated dma buffer at 0x%p, length=%d\n",
+		 __FUNCTION__, dmaq->buffer, size);
+
+	return 0;
+	}
+
+static int init_dma_queue(struct adapter *adapter)
+{
+	struct {
+		struct dmaq *dmaq;
+		u32 dma_status;
+		int size;
+	} dmaq_desc[] = {
+		{ &adapter->dmaq1, 0x10000000, SIZE_OF_BUF_DMA1 },
+		{ &adapter->dmaq2, 0x20000000, SIZE_OF_BUF_DMA2 }
+	}, *p = dmaq_desc;
+	int i;
+
+	for (i = 0; i < 2; i++, p++) {
+		if (init_dma_queue_one(adapter, p->dmaq, p->size, i) < 0)
+			adapter->dma_status &= ~p->dma_status;
+		else
+			adapter->dma_status |= p->dma_status;
+	}
+	return (adapter->dma_status & 0x30000000) ? 0 : -ENOMEM;
+}
+
+static void free_dma_queue_one(struct adapter *adapter, struct dmaq *dmaq)
+{
+	if (dmaq->buffer) {
+		pci_free_consistent(adapter->pdev, dmaq->buffer_size + 0x80,
+				    dmaq->buffer, dmaq->bus_addr);
+		memset(dmaq, 0, sizeof(*dmaq));
+	}
+}
+
+static void free_dma_queue(struct adapter *adapter)
+{
+	struct dmaq *dmaq[] = {
+		&adapter->dmaq1,
+		&adapter->dmaq2,
+		NULL
+	}, **p;
+
+	for (p = dmaq; *p; p++)
+		free_dma_queue_one(adapter, *p);
+	}
+
+static void release_adapter(struct adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	iounmap(adapter->io_mem);
+	pci_disable_device(pdev);
+	pci_release_region(pdev, 0);
+	pci_release_region(pdev, 1);
+}
+
+static void free_adapter_object(struct adapter *adapter)
+{
+	dprintk("%s:\n", __FUNCTION__);
+
+	close_stream(adapter, 0);
+		free_irq(adapter->irq, adapter);
+	free_dma_queue(adapter);
+	release_adapter(adapter);
+	kfree(adapter);
+}
+
+static struct pci_driver skystar2_pci_driver;
+
+static int claim_adapter(struct adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	u16 var;
+	int ret;
+
+	ret = pci_request_region(pdev, 1, skystar2_pci_driver.name);
+	if (ret < 0)
+		goto out;
+
+	ret = pci_request_region(pdev, 0, skystar2_pci_driver.name);
+	if (ret < 0)
+		goto err_pci_release_1;
+
+	pci_read_config_byte(pdev, PCI_CLASS_REVISION, &adapter->card_revision);
+
+	dprintk("%s: card revision %x \n", __FUNCTION__, adapter->card_revision);
+
+	ret = pci_enable_device(pdev);
+	if (ret < 0)
+		goto err_pci_release_0;
+
+	pci_read_config_word(pdev, 4, &var);
+
+	if ((var & 4) == 0)
+		pci_set_master(pdev);
+
+	adapter->io_port = pdev->resource[1].start;
+
+	adapter->io_mem = ioremap(pdev->resource[0].start, 0x800);
+
+	if (!adapter->io_mem) {
+		dprintk("%s: can not map io memory\n", __FUNCTION__);
+		ret = -EIO;
+		goto err_pci_disable;
+	}
+
+	dprintk("%s: io memory maped at %p\n", __FUNCTION__, adapter->io_mem);
+
+	ret = 1;
+out:
+	return ret;
+
+err_pci_disable:
+	pci_disable_device(pdev);
+err_pci_release_0:
+	pci_release_region(pdev, 0);
+err_pci_release_1:
+	pci_release_region(pdev, 1);
+	goto out;
+}
+
+/*
+static int sll_reset_flexcop(struct adapter *adapter)
+{
+	write_reg_dw(adapter, 0x208, 0);
+	write_reg_dw(adapter, 0x210, 0xb2ff);
+
+	return 0;
+}
+*/
+
+static void decide_how_many_hw_filters(struct adapter *adapter)
+{
+	int hw_filters;
+	int mod_option_hw_filters;
+
+	// FlexCop IIb & III have 6+32 hw filters    
+	// FlexCop II has 6 hw filters, every other should have at least 6
+	switch (adapter->b2c2_revision) {
+	case 0x82:		/* II */
+		hw_filters = 6;
+		break;
+	case 0xc3:		/* IIB */
+		hw_filters = 6 + 32;
+		break;
+	case 0xc0:		/* III */
+		hw_filters = 6 + 32;
+		break;
+	default:
+		hw_filters = 6;
+		break;
+	}
+	printk("%s: the chip has %i hardware filters", __FILE__, hw_filters);
+
+	mod_option_hw_filters = 0;
+	if (enable_hw_filters >= 1)
+		mod_option_hw_filters += 6;
+	if (enable_hw_filters >= 2)
+		mod_option_hw_filters += 32;
+
+	if (mod_option_hw_filters >= hw_filters) {
+		adapter->useable_hw_filters = hw_filters;
+	} else {
+		adapter->useable_hw_filters = mod_option_hw_filters;
+		printk(", but only %d will be used because of module option", mod_option_hw_filters);
+	}
+	printk("\n");
+	dprintk("%s: useable_hardware_filters set to %i\n", __FILE__, adapter->useable_hw_filters);
+}
+
+static int driver_initialize(struct pci_dev *pdev)
+{
+	struct adapter *adapter;
+	u32 tmp;
+	int ret = -ENOMEM;
+
+	adapter = kmalloc(sizeof(struct adapter), GFP_KERNEL);
+	if (!adapter) {
+		dprintk("%s: out of memory!\n", __FUNCTION__);
+		goto out;
+	}
+
+	memset(adapter, 0, sizeof(struct adapter));
+
+	pci_set_drvdata(pdev,adapter);
+
+	adapter->pdev = pdev;
+	adapter->irq = pdev->irq;
+
+	ret = claim_adapter(adapter);
+	if (ret < 0)
+		goto err_kfree;
+
+	irq_dma_enable_disable_irq(adapter, 0);
+
+	ret = request_irq(pdev->irq, isr, 0x4000000, "Skystar2", adapter);
+	if (ret < 0) {
+		dprintk("%s: unable to allocate irq=%d !\n", __FUNCTION__, pdev->irq);
+		goto err_release_adapter;
+	}
+
+	read_reg_dw(adapter, 0x208);
+	write_reg_dw(adapter, 0x208, 0);
+	write_reg_dw(adapter, 0x210, 0xb2ff);
+	write_reg_dw(adapter, 0x208, 0x40);
+
+	ret = init_dma_queue(adapter);
+	if (ret < 0)
+		goto err_free_irq;
+
+	adapter->b2c2_revision = (read_reg_dw(adapter, 0x204) >> 0x18);
+
+	switch (adapter->b2c2_revision) {
+	case 0x82:
+		printk("%s: FlexCopII(rev.130) chip found\n", __FILE__);
+		break;
+	case 0xc3:
+		printk("%s: FlexCopIIB(rev.195) chip found\n", __FILE__);
+		break;
+	case 0xc0:
+		printk("%s: FlexCopIII(rev.192) chip found\n", __FILE__);
+		break;
+	default:
+		printk("%s: The revision of the FlexCop chip on your card is %d\n", __FILE__, adapter->b2c2_revision);
+		printk("%s: This driver works only with FlexCopII(rev.130), FlexCopIIB(rev.195) and FlexCopIII(rev.192).\n", __FILE__);
+		ret = -ENODEV;
+		goto err_free_dma_queue;
+		}
+
+	decide_how_many_hw_filters(adapter);
+
+	init_pids(adapter);
+
+	tmp = read_reg_dw(adapter, 0x204);
+
+	write_reg_dw(adapter, 0x204, 0);
+	mdelay(20);
+
+	write_reg_dw(adapter, 0x204, tmp);
+	mdelay(10);
+
+	tmp = read_reg_dw(adapter, 0x308);
+	write_reg_dw(adapter, 0x308, 0x4000 | tmp);
+
+	adapter->dw_sram_type = 0x10000;
+
+	sll_detect_sram_size(adapter);
+
+	dprintk("%s sram length = %d, sram type= %x\n", __FUNCTION__, sram_length(adapter), adapter->dw_sram_type);
+
+	sram_set_media_dest(adapter, 1);
+	sram_set_net_dest(adapter, 1);
+
+	ctrl_enable_smc(adapter, 0);
+
+	sram_set_cai_dest(adapter, 2);
+	sram_set_cao_dest(adapter, 2);
+
+	dma_enable_disable_irq(adapter, 1, 0, 0);
+
+	if (eeprom_get_mac_addr(adapter, 0, adapter->mac_addr) != 0) {
+		printk("%s MAC address = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x \n", __FUNCTION__, adapter->mac_addr[0],
+		       adapter->mac_addr[1], adapter->mac_addr[2], adapter->mac_addr[3], adapter->mac_addr[4], adapter->mac_addr[5],
+		       adapter->mac_addr[6], adapter->mac_addr[7]
+		    );
+
+		ca_set_mac_dst_addr_filter(adapter, adapter->mac_addr);
+		ctrl_enable_mac(adapter, 1);
+	}
+
+	spin_lock_init(&adapter->lock);
+
+out:
+	return ret;
+
+err_free_dma_queue:
+	free_dma_queue(adapter);
+err_free_irq:
+	free_irq(pdev->irq, adapter);
+err_release_adapter:
+	release_adapter(adapter);
+err_kfree:
+	pci_set_drvdata(pdev, NULL);
+	kfree(adapter);
+	goto out;
+}
+
+static void driver_halt(struct pci_dev *pdev)
+{
+	struct adapter *adapter = pci_get_drvdata(pdev);
+
+	irq_dma_enable_disable_irq(adapter, 0);
+
+	ctrl_enable_receive_data(adapter, 0);
+
+	free_adapter_object(adapter);
+
+	pci_set_drvdata(pdev, NULL);
+}
+
+static int dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
+	struct adapter *adapter = (struct adapter *) dvbdmx->priv;
+
+	dprintk("%s: PID=%d, type=%d\n", __FUNCTION__, dvbdmxfeed->pid, dvbdmxfeed->type);
+
+	open_stream(adapter, dvbdmxfeed->pid);
+
+	return 0;
+}
+
+static int dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
+	struct adapter *adapter = (struct adapter *) dvbdmx->priv;
+
+	dprintk("%s: PID=%d, type=%d\n", __FUNCTION__, dvbdmxfeed->pid, dvbdmxfeed->type);
+
+	close_stream(adapter, dvbdmxfeed->pid);
+
+	return 0;
+}
+
+/* lnb control */
+static void set_tuner_tone(struct adapter *adapter, u8 tone)
+{
+	u16 wz_half_period_for_45_mhz[] = { 0x01ff, 0x0154, 0x00ff, 0x00cc };
+	u16 ax;
+
+	dprintk("%s: %u\n", __FUNCTION__, tone);
+
+	switch (tone) {
+	case 1:
+		ax = wz_half_period_for_45_mhz[0];
+		break;
+	case 2:
+		ax = wz_half_period_for_45_mhz[1];
+		break;
+	case 3:
+		ax = wz_half_period_for_45_mhz[2];
+		break;
+	case 4:
+		ax = wz_half_period_for_45_mhz[3];
+		break;
+
+	default:
+		ax = 0;
+	}
+
+	if (ax != 0) {
+		write_reg_dw(adapter, 0x200, ((ax << 0x0f) + (ax & 0x7fff)) | 0x40000000);
+
+	} else {
+
+		write_reg_dw(adapter, 0x200, 0x40ff8000);
+	}
+}
+
+static void set_tuner_polarity(struct adapter *adapter, u8 polarity)
+{
+	u32 var;
+
+	dprintk("%s : polarity = %u \n", __FUNCTION__, polarity);
+
+	var = read_reg_dw(adapter, 0x204);
+
+	if (polarity == 0) {
+		dprintk("%s: LNB power off\n", __FUNCTION__);
+		var = var | 1;
+	};
+
+	if (polarity == 1) {
+		var = var & ~1;
+		var = var & ~4;
+	};
+
+	if (polarity == 2) {
+		var = var & ~1;
+		var = var | 4;
+	}
+
+	write_reg_dw(adapter, 0x204, var);
+}
+
+static void diseqc_send_bit(struct adapter *adapter, int data)
+{
+	set_tuner_tone(adapter, 1);
+	udelay(data ? 500 : 1000);
+	set_tuner_tone(adapter, 0);
+	udelay(data ? 1000 : 500);
+}
+
+
+static void diseqc_send_byte(struct adapter *adapter, int data)
+		{
+	int i, par = 1, d;
+
+	for (i = 7; i >= 0; i--) {
+		d = (data >> i) & 1;
+		par ^= d;
+		diseqc_send_bit(adapter, d);
+	}
+
+	diseqc_send_bit(adapter, par);
+		}
+
+
+static int send_diseqc_msg(struct adapter *adapter, int len, u8 *msg, unsigned long burst)
+{
+	int i;
+
+	set_tuner_tone(adapter, 0);
+	mdelay(16);
+
+	for (i = 0; i < len; i++)
+		diseqc_send_byte(adapter, msg[i]);
+
+	mdelay(16);
+
+	if (burst != -1) {
+		if (burst)
+			diseqc_send_byte(adapter, 0xff);
+		else {
+			set_tuner_tone(adapter, 1);
+			udelay(12500);
+			set_tuner_tone(adapter, 0);
+		}
+		msleep(20);
+	}
+
+	return 0;
+}
+
+static int flexcop_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	switch(tone) {
+		case SEC_TONE_ON:
+			set_tuner_tone(adapter, 1);
+			break;
+		case SEC_TONE_OFF:
+			set_tuner_tone(adapter, 0);
+				break;
+			default:
+				return -EINVAL;
+			};
+
+	return 0;
+}
+
+static int flexcop_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
+		{
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+			send_diseqc_msg(adapter, cmd->msg_len, cmd->msg, 0);
+
+	return 0;
+		}
+
+static int flexcop_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
+{
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	send_diseqc_msg(adapter, 0, NULL, minicmd);
+
+	return 0;
+}
+
+static int flexcop_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+		{
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	dprintk("%s: FE_SET_VOLTAGE\n", __FUNCTION__);
+
+	switch (voltage) {
+	case SEC_VOLTAGE_13:
+		dprintk("%s: SEC_VOLTAGE_13, %x\n", __FUNCTION__, SEC_VOLTAGE_13);
+		set_tuner_polarity(adapter, 1);
+		return 0;
+
+	case SEC_VOLTAGE_18:
+		dprintk("%s: SEC_VOLTAGE_18, %x\n", __FUNCTION__, SEC_VOLTAGE_18);
+		set_tuner_polarity(adapter, 2);
+			return 0;
+
+	default:
+		return -EINVAL;
+	}
+	}
+
+static int flexcop_sleep(struct dvb_frontend* fe)
+		{
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	dprintk("%s: FE_SLEEP\n", __FUNCTION__);
+			set_tuner_polarity(adapter, 0);
+
+	if (adapter->fe_sleep) return adapter->fe_sleep(fe);
+	return 0;
+		}
+
+static u32 flexcop_i2c_func(struct i2c_adapter *adapter)
+		{
+	printk("flexcop_i2c_func\n");
+
+	return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm    flexcop_algo = {
+	.name		= "flexcop i2c algorithm",
+	.id		= I2C_ALGO_BIT,
+	.master_xfer	= master_xfer,
+	.functionality	= flexcop_i2c_func,
+};
+
+
+
+
+static int samsung_tbmu24112_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
+{
+	u8 aclk = 0;
+	u8 bclk = 0;
+
+	if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
+	else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
+	else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
+	else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
+	else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
+	else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
+
+	stv0299_writereg (fe, 0x13, aclk);
+	stv0299_writereg (fe, 0x14, bclk);
+	stv0299_writereg (fe, 0x1f, (ratio >> 16) & 0xff);
+	stv0299_writereg (fe, 0x20, (ratio >>  8) & 0xff);
+	stv0299_writereg (fe, 0x21, (ratio      ) & 0xf0);
+
+	return 0;
+}
+
+static int samsung_tbmu24112_pll_set(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
+{
+	u8 buf[4];
+	u32 div;
+	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	div = params->frequency / 125;
+
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = div & 0xff;
+	buf[2] = 0x84;  // 0xC4
+	buf[3] = 0x08;
+
+	if (params->frequency < 1500000) buf[3] |= 0x10;
+
+	if (i2c_transfer (&adapter->i2c_adap, &msg, 1) != 1) return -EIO;
+	return 0;
+}
+
+static u8 samsung_tbmu24112_inittab[] = {
+	     0x01, 0x15,
+	     0x02, 0x30,
+	     0x03, 0x00,
+	     0x04, 0x7D,
+	     0x05, 0x35,
+	     0x06, 0x02,
+	     0x07, 0x00,
+	     0x08, 0xC3,
+	     0x0C, 0x00,
+	     0x0D, 0x81,
+	     0x0E, 0x23,
+	     0x0F, 0x12,
+	     0x10, 0x7E,
+	     0x11, 0x84,
+	     0x12, 0xB9,
+	     0x13, 0x88,
+	     0x14, 0x89,
+	     0x15, 0xC9,
+	     0x16, 0x00,
+	     0x17, 0x5C,
+	     0x18, 0x00,
+	     0x19, 0x00,
+	     0x1A, 0x00,
+	     0x1C, 0x00,
+	     0x1D, 0x00,
+	     0x1E, 0x00,
+	     0x1F, 0x3A,
+	     0x20, 0x2E,
+	     0x21, 0x80,
+	     0x22, 0xFF,
+	     0x23, 0xC1,
+	     0x28, 0x00,
+	     0x29, 0x1E,
+	     0x2A, 0x14,
+	     0x2B, 0x0F,
+	     0x2C, 0x09,
+	     0x2D, 0x05,
+	     0x31, 0x1F,
+	     0x32, 0x19,
+	     0x33, 0xFE,
+	     0x34, 0x93,
+	     0xff, 0xff,
+			};
+
+static struct stv0299_config samsung_tbmu24112_config = {
+	.demod_address = 0x68,
+	.inittab = samsung_tbmu24112_inittab,
+	.mclk = 88000000UL,
+	.invert = 0,
+	.enhanced_tuning = 0,
+	.skip_reinit = 0,
+	.lock_output = STV0229_LOCKOUTPUT_LK,
+	.volt13_op0_op1 = STV0299_VOLT13_OP1,
+	.min_delay_ms = 100,
+	.set_symbol_rate = samsung_tbmu24112_set_symbol_rate,
+   	.pll_set = samsung_tbmu24112_pll_set,
+};
+
+
+
+static int nxt2002_request_firmware(struct dvb_frontend* fe, const struct firmware **fw, char* name)
+{
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	return request_firmware(fw, name, &adapter->pdev->dev);
+}
+
+
+static struct nxt2002_config samsung_tbmv_config = {
+	.demod_address = 0x0A,
+	.request_firmware = nxt2002_request_firmware,
+};
+
+static int samsung_tdtc9251dh0_demod_init(struct dvb_frontend* fe)
+{
+	static u8 mt352_clock_config [] = { 0x89, 0x18, 0x2d };
+	static u8 mt352_reset [] = { 0x50, 0x80 };
+	static u8 mt352_adc_ctl_1_cfg [] = { 0x8E, 0x40 };
+	static u8 mt352_agc_cfg [] = { 0x67, 0x28, 0xa1 };
+	static u8 mt352_capt_range_cfg[] = { 0x75, 0x32 };
+
+	mt352_write(fe, mt352_clock_config, sizeof(mt352_clock_config));
+	udelay(2000);
+	mt352_write(fe, mt352_reset, sizeof(mt352_reset));
+	mt352_write(fe, mt352_adc_ctl_1_cfg, sizeof(mt352_adc_ctl_1_cfg));
+
+	mt352_write(fe, mt352_agc_cfg, sizeof(mt352_agc_cfg));
+	mt352_write(fe, mt352_capt_range_cfg, sizeof(mt352_capt_range_cfg));
+
+	return 0;
+}
+
+static int samsung_tdtc9251dh0_pll_set(struct dvb_frontend* fe, struct dvb_frontend_parameters* params, u8* pllbuf)
+{
+	u32 div;
+	unsigned char bs = 0;
+
+	#define IF_FREQUENCYx6 217    /* 6 * 36.16666666667MHz */
+	div = (((params->frequency + 83333) * 3) / 500000) + IF_FREQUENCYx6;
+
+	if (params->frequency >= 48000000 && params->frequency <= 154000000) bs = 0x09;
+	if (params->frequency >= 161000000 && params->frequency <= 439000000) bs = 0x0a;
+	if (params->frequency >= 447000000 && params->frequency <= 863000000) bs = 0x08;
+
+	pllbuf[0] = 0xc2; // Note: non-linux standard PLL i2c address
+	pllbuf[1] = div >> 8;
+   	pllbuf[2] = div & 0xff;
+   	pllbuf[3] = 0xcc;
+   	pllbuf[4] = bs;
+
+	return 0;
+}
+
+static struct mt352_config samsung_tdtc9251dh0_config = {
+
+	.demod_address = 0x0f,
+	.demod_init = samsung_tdtc9251dh0_demod_init,
+   	.pll_set = samsung_tdtc9251dh0_pll_set,
+};
+
+static int skystar23_samsung_tbdu18132_pll_set(struct dvb_frontend* fe, struct dvb_frontend_parameters* params)
+{
+	u8 buf[4];
+	u32 div;
+	struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = buf, .len = sizeof(buf) };
+	struct adapter* adapter = (struct adapter*) fe->dvb->priv;
+
+	div = (params->frequency + (125/2)) / 125;
+
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = (div >> 0) & 0xff;
+	buf[2] = 0x84 | ((div >> 10) & 0x60);
+	buf[3] = 0x80;
+
+	if (params->frequency < 1550000)
+		buf[3] |= 0x02;
+
+	if (i2c_transfer (&adapter->i2c_adap, &msg, 1) != 1) return -EIO;
+	return 0;
+}
+
+static struct mt312_config skystar23_samsung_tbdu18132_config = {
+
+	.demod_address = 0x0e,
+   	.pll_set = skystar23_samsung_tbdu18132_pll_set,
+};
+
+
+
+
+static void frontend_init(struct adapter *skystar2)
+{
+	switch(skystar2->pdev->device) {
+	case 0x2103: // Technisat Skystar2 OR Technisat Airstar2 (DVB-T or ATSC)
+
+		// Attempt to load the Nextwave nxt2002 for ATSC support 
+		skystar2->fe = nxt2002_attach(&samsung_tbmv_config, &skystar2->i2c_adap);
+		if (skystar2->fe != NULL) {
+			skystar2->fe_sleep = skystar2->fe->ops->sleep;
+			skystar2->fe->ops->sleep = flexcop_sleep;
+			break;
+		}
+
+		// try the skystar2 v2.6 first (stv0299/Samsung tbmu24112(sl1935))
+		skystar2->fe = stv0299_attach(&samsung_tbmu24112_config, &skystar2->i2c_adap);
+		if (skystar2->fe != NULL) {
+			skystar2->fe->ops->set_voltage = flexcop_set_voltage;
+			skystar2->fe_sleep = skystar2->fe->ops->sleep;
+			skystar2->fe->ops->sleep = flexcop_sleep;
+			break;
+}
+
+		// try the airstar2 (mt352/Samsung tdtc9251dh0(??))
+		skystar2->fe = mt352_attach(&samsung_tdtc9251dh0_config, &skystar2->i2c_adap);
+		if (skystar2->fe != NULL) {
+			skystar2->fe->ops->info.frequency_min = 474000000;
+			skystar2->fe->ops->info.frequency_max = 858000000;
+			break;
+		}
+
+		// try the skystar2 v2.3 (vp310/Samsung tbdu18132(tsa5059))
+		skystar2->fe = vp310_attach(&skystar23_samsung_tbdu18132_config, &skystar2->i2c_adap);
+		if (skystar2->fe != NULL) {
+			skystar2->fe->ops->diseqc_send_master_cmd = flexcop_diseqc_send_master_cmd;
+			skystar2->fe->ops->diseqc_send_burst = flexcop_diseqc_send_burst;
+			skystar2->fe->ops->set_tone = flexcop_set_tone;
+			skystar2->fe->ops->set_voltage = flexcop_set_voltage;
+			skystar2->fe_sleep = skystar2->fe->ops->sleep;
+			skystar2->fe->ops->sleep = flexcop_sleep;
+			break;
+		}
+		break;
+	}
+
+	if (skystar2->fe == NULL) {
+		printk("skystar2: A frontend driver was not found for device %04x/%04x subsystem %04x/%04x\n",
+		       skystar2->pdev->vendor,
+		       skystar2->pdev->device,
+		       skystar2->pdev->subsystem_vendor,
+		       skystar2->pdev->subsystem_device);
+	} else {
+		if (dvb_register_frontend(skystar2->dvb_adapter, skystar2->fe)) {
+			printk("skystar2: Frontend registration failed!\n");
+			if (skystar2->fe->ops->release)
+				skystar2->fe->ops->release(skystar2->fe);
+			skystar2->fe = NULL;
+		}
+	}
+}
+
+
+static int skystar2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct adapter *adapter;
+	struct dvb_adapter *dvb_adapter;
+	struct dvb_demux *dvbdemux;
+	struct dmx_demux *dmx;
+	int ret = -ENODEV;
+
+	if (!pdev)
+		goto out;
+
+	ret = driver_initialize(pdev);
+	if (ret < 0)
+		goto out;
+
+	ret = dvb_register_adapter(&dvb_adapter, skystar2_pci_driver.name,
+				   THIS_MODULE);
+	if (ret < 0) {
+		printk("%s: Error registering DVB adapter\n", __FUNCTION__);
+		goto err_halt;
+	}
+
+	adapter = pci_get_drvdata(pdev);
+
+	dvb_adapter->priv = adapter;
+	adapter->dvb_adapter = dvb_adapter;
+
+
+	init_MUTEX(&adapter->i2c_sem);
+
+
+	memset(&adapter->i2c_adap, 0, sizeof(struct i2c_adapter));
+	strcpy(adapter->i2c_adap.name, "SkyStar2");
+
+	i2c_set_adapdata(&adapter->i2c_adap, adapter);
+
+#ifdef I2C_ADAP_CLASS_TV_DIGITAL
+	adapter->i2c_adap.class 	    = I2C_ADAP_CLASS_TV_DIGITAL;
+#else
+	adapter->i2c_adap.class 	    = I2C_CLASS_TV_DIGITAL;
+#endif
+	adapter->i2c_adap.algo              = &flexcop_algo;
+	adapter->i2c_adap.algo_data         = NULL;
+	adapter->i2c_adap.id                = I2C_ALGO_BIT;
+
+	ret = i2c_add_adapter(&adapter->i2c_adap);
+	if (ret < 0)
+		goto err_dvb_unregister;
+
+	dvbdemux = &adapter->demux;
+
+	dvbdemux->priv = adapter;
+	dvbdemux->filternum = N_PID_SLOTS;
+	dvbdemux->feednum = N_PID_SLOTS;
+	dvbdemux->start_feed = dvb_start_feed;
+	dvbdemux->stop_feed = dvb_stop_feed;
+	dvbdemux->write_to_decoder = NULL;
+	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
+
+	ret = dvb_dmx_init(&adapter->demux);
+	if (ret < 0)
+		goto err_i2c_del;
+
+	dmx = &dvbdemux->dmx;
+
+	adapter->hw_frontend.source = DMX_FRONTEND_0;
+	adapter->dmxdev.filternum = N_PID_SLOTS;
+	adapter->dmxdev.demux = dmx;
+	adapter->dmxdev.capabilities = 0;
+
+	ret = dvb_dmxdev_init(&adapter->dmxdev, adapter->dvb_adapter);
+	if (ret < 0)
+		goto err_dmx_release;
+
+	ret = dmx->add_frontend(dmx, &adapter->hw_frontend);
+	if (ret < 0)
+		goto err_dmxdev_release;
+
+	adapter->mem_frontend.source = DMX_MEMORY_FE;
+
+	ret = dmx->add_frontend(dmx, &adapter->mem_frontend);
+	if (ret < 0)
+		goto err_remove_hw_frontend;
+
+	ret = dmx->connect_frontend(dmx, &adapter->hw_frontend);
+	if (ret < 0)
+		goto err_remove_mem_frontend;
+
+	dvb_net_init(adapter->dvb_adapter, &adapter->dvbnet, &dvbdemux->dmx);
+
+	frontend_init(adapter);
+out:
+	return ret;
+
+err_remove_mem_frontend:
+	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &adapter->mem_frontend);
+err_remove_hw_frontend:
+	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &adapter->hw_frontend);
+err_dmxdev_release:
+	dvb_dmxdev_release(&adapter->dmxdev);
+err_dmx_release:
+	dvb_dmx_release(&adapter->demux);
+err_i2c_del:
+	i2c_del_adapter(&adapter->i2c_adap);
+err_dvb_unregister:
+	dvb_unregister_adapter(adapter->dvb_adapter);
+err_halt:
+	driver_halt(pdev);
+	goto out;
+}
+
+static void skystar2_remove(struct pci_dev *pdev)
+{
+	struct adapter *adapter = pci_get_drvdata(pdev);
+	struct dvb_demux *dvbdemux;
+	struct dmx_demux *dmx;
+
+	if (!adapter)
+		return;
+
+		dvb_net_release(&adapter->dvbnet);
+		dvbdemux = &adapter->demux;
+	dmx = &dvbdemux->dmx;
+
+	dmx->close(dmx);
+	dmx->remove_frontend(dmx, &adapter->hw_frontend);
+	dmx->remove_frontend(dmx, &adapter->mem_frontend);
+
+		dvb_dmxdev_release(&adapter->dmxdev);
+	dvb_dmx_release(dvbdemux);
+
+	if (adapter->fe != NULL)
+		dvb_unregister_frontend(adapter->fe);
+
+	dvb_unregister_adapter(adapter->dvb_adapter);
+
+			i2c_del_adapter(&adapter->i2c_adap);
+
+		driver_halt(pdev);
+	}
+
+static struct pci_device_id skystar2_pci_tbl[] = {
+	{0x000013d0, 0x00002103, 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x00000000},
+/*	{0x000013d0, 0x00002200, 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x00000000}, UNDEFINED HARDWARE - mail linuxtv.org list */	//FCIII
+	{0,},
+};
+
+MODULE_DEVICE_TABLE(pci, skystar2_pci_tbl);
+
+static struct pci_driver skystar2_pci_driver = {
+	.name = "SkyStar2",
+	.id_table = skystar2_pci_tbl,
+	.probe = skystar2_probe,
+	.remove = skystar2_remove,
+};
+
+static int skystar2_init(void)
+{
+	return pci_register_driver(&skystar2_pci_driver);
+}
+
+static void skystar2_cleanup(void)
+{
+	pci_unregister_driver(&skystar2_pci_driver);
+}
+
+module_init(skystar2_init);
+module_exit(skystar2_cleanup);
+
+MODULE_DESCRIPTION("Technisat SkyStar2 DVB PCI Driver");
+MODULE_LICENSE("GPL");