diff --git a/drivers/media/video/tlg2300/pd-main.c b/drivers/media/video/tlg2300/pd-main.c
new file mode 100644
index 0000000..f997e2d
--- /dev/null
+++ b/drivers/media/video/tlg2300/pd-main.c
@@ -0,0 +1,546 @@
+/*
+ * device driver for Telegent tlg2300 based TV cards
+ *
+ * Author :
+ * 	Kang Yong	<kangyong@telegent.com>
+ * 	Zhang Xiaobing	<xbzhang@telegent.com>
+ * 	Huang Shijie	<zyziii@telegent.com> or <shijie8@hotmail.com>
+ *
+ *	(c) 2009 Telegent Systems
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kref.h>
+#include <linux/usb.h>
+#include <linux/suspend.h>
+#include <linux/usb/quirks.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/firmware.h>
+#include <linux/smp_lock.h>
+#include "vendorcmds.h"
+#include "pd-common.h"
+
+#define VENDOR_ID	0x1B24
+#define PRODUCT_ID	0x4001
+static struct usb_device_id id_table[] = {
+	{ USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID, PRODUCT_ID, 255, 1, 0) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID, PRODUCT_ID, 255, 1, 1) },
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+int debug_mode;
+module_param(debug_mode, int, 0644);
+MODULE_PARM_DESC(debug_mode, "0 = disable, 1 = enable, 2 = verbose");
+
+const char *firmware_name = "tlg2300_firmware.bin";
+struct usb_driver poseidon_driver;
+LIST_HEAD(pd_device_list); /*should add a lock*/
+
+/*
+ * send set request to USB firmware.
+ */
+s32 send_set_req(struct poseidon *pd, u8 cmdid, s32 param, s32 *cmd_status)
+{
+	s32 ret;
+	s8  data[32] = {};
+	u16 lower_16, upper_16;
+
+	if (pd->state & POSEIDON_STATE_DISCONNECT)
+		return -ENODEV;
+
+	mdelay(30);
+
+	if (param == 0) {
+		upper_16 = lower_16 = 0;
+	} else {
+		/* send 32 bit param as  two 16 bit param,little endian */
+		lower_16 = (unsigned short)(param & 0xffff);
+		upper_16 = (unsigned short)((param >> 16) & 0xffff);
+	}
+	ret = usb_control_msg(pd->udev,
+			 usb_rcvctrlpipe(pd->udev, 0),
+			 REQ_SET_CMD | cmdid,
+			 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			 lower_16,
+			 upper_16,
+			 &data,
+			 sizeof(*cmd_status),
+			 USB_CTRL_GET_TIMEOUT);
+
+	if (!ret) {
+		return -ENXIO;
+	} else {
+		/*  1st 4 bytes into cmd_status   */
+		memcpy((char *)cmd_status, &(data[0]), sizeof(*cmd_status));
+	}
+	return 0;
+}
+
+/*
+ * send get request to Poseidon firmware.
+ */
+s32 send_get_req(struct poseidon *pd, u8 cmdid, s32 param,
+			void *buf, s32 *cmd_status, s32 datalen)
+{
+	s32 ret;
+	s8 data[128] = {};
+	u16 lower_16, upper_16;
+
+	if (pd->state & POSEIDON_STATE_DISCONNECT)
+		return -ENODEV;
+
+	mdelay(30);
+	if (param == 0) {
+		upper_16 = lower_16 = 0;
+	} else {
+		/*send 32 bit param as two 16 bit param, little endian */
+		lower_16 = (unsigned short)(param & 0xffff);
+		upper_16 = (unsigned short)((param >> 16) & 0xffff);
+	}
+	ret = usb_control_msg(pd->udev,
+			 usb_rcvctrlpipe(pd->udev, 0),
+			 REQ_GET_CMD | cmdid,
+			 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			 lower_16,
+			 upper_16,
+			 &data,
+			 (datalen + sizeof(*cmd_status)),
+			 USB_CTRL_GET_TIMEOUT);
+
+	if (ret < 0) {
+		return -ENXIO;
+	} else {
+		/* 1st 4 bytes into cmd_status, remaining data into cmd_data */
+		memcpy((char *)cmd_status, &data[0], sizeof(*cmd_status));
+		memcpy((char *)buf, &data[sizeof(*cmd_status)], datalen);
+	}
+	return 0;
+}
+
+static int pm_notifier_block(struct notifier_block *nb,
+				unsigned long event, void *dummy)
+{
+	struct poseidon *pd = NULL;
+	struct list_head *node, *next;
+
+	switch (event) {
+	case PM_POST_HIBERNATION:
+		list_for_each_safe(node, next, &pd_device_list) {
+			struct usb_device *udev;
+			struct usb_interface *iface;
+			int rc = 0;
+
+			pd = container_of(node, struct poseidon, device_list);
+			udev = pd->udev;
+			iface = pd->interface;
+
+			rc = usb_lock_device_for_reset(udev, iface);
+			if (rc >= 0) {
+				usb_reset_device(udev);
+				usb_unlock_device(udev);
+			}
+		}
+		break;
+	case PM_HIBERNATION_PREPARE:
+		list_for_each_entry(pd, &pd_device_list, device_list) {
+			if (pd->interface->pm_usage_cnt <= 0) {
+				pd->state |= POSEIDON_STATE_IDLE_HIBERANTION;
+				usb_autopm_get_interface(pd->interface);
+			}
+			/* for audio */
+			if (pd->audio.users)
+				pd->audio.pm_state = 1;
+		}
+		break;
+	default:
+		log("event :%ld\n", event);
+	}
+	return 0;
+}
+
+static struct notifier_block pm_notifer = {
+	.notifier_call = pm_notifier_block,
+};
+
+int usb_softrst(struct poseidon *pd, s32 udelay)
+{
+	s32 ret = 0;
+	s32 cmd_status = 0;
+
+	if (pd->state & POSEIDON_STATE_DISCONNECT)
+		return -ENODEV;
+
+	ret = send_set_req(pd, CMD_CHIP_RST, udelay, &cmd_status);
+	if (ret || cmd_status)
+		return -ENXIO;
+	return ret;
+}
+
+int set_tuner_mode(struct poseidon *pd, unsigned char mode)
+{
+	s32 ret, cmd_status;
+
+	if (pd->state & POSEIDON_STATE_DISCONNECT)
+		return -ENODEV;
+
+	ret = send_set_req(pd, TUNE_MODE_SELECT, mode, &cmd_status);
+	if (ret || cmd_status)
+		return -ENXIO;
+	return 0;
+}
+
+enum tlg__analog_audio_standard get_audio_std(s32 mode, s32 country_code)
+{
+	s32 nicam[] = {27, 32, 33, 34, 36, 44, 45, 46, 47, 48, 64,
+			65, 86, 351, 352, 353, 354, 358, 372, 852, 972};
+	s32 btsc[] = {1, 52, 54, 55, 886};
+	s32 eiaj[] = {81};
+	s32 i;
+
+	if (mode == TLG_MODE_FM_RADIO) {
+		if (country_code == 1)
+			return TLG_TUNE_ASTD_FM_US;
+		else
+			return TLG_TUNE_ASTD_FM_EUR;
+	} else if (mode == TLG_MODE_ANALOG_TV_UNCOMP) {
+		for (i = 0; i < sizeof(nicam) / sizeof(s32); i++) {
+			if (country_code == nicam[i])
+				return TLG_TUNE_ASTD_NICAM;
+		}
+
+		for (i = 0; i < sizeof(btsc) / sizeof(s32); i++) {
+			if (country_code == btsc[i])
+				return TLG_TUNE_ASTD_BTSC;
+		}
+
+		for (i = 0; i < sizeof(eiaj) / sizeof(s32); i++) {
+			if (country_code == eiaj[i])
+				return TLG_TUNE_ASTD_EIAJ;
+		}
+
+		return TLG_TUNE_ASTD_A2;
+	} else {
+		return TLG_TUNE_ASTD_NONE;
+	}
+}
+
+void poseidon_delete(struct kref *kref)
+{
+	struct poseidon *pd = container_of(kref, struct poseidon, kref);
+
+	if (!pd)
+		return;
+	list_del(&pd->device_list);
+
+	pd_dvb_usb_device_cleanup(pd);
+	/* clean_audio_data(&pd->audio_data);*/
+
+	if (pd->udev) {
+		usb_put_dev(pd->udev);
+		pd->udev = NULL;
+	}
+	if (pd->interface) {
+		usb_put_intf(pd->interface);
+		pd->interface = NULL;
+	}
+	kfree(pd);
+	log();
+}
+
+static int firmware_download(struct usb_device *udev)
+{
+	int ret = 0, actual_length;
+	const struct firmware *fw = NULL;
+	void *fwbuf = NULL;
+	size_t fwlength = 0, offset;
+	size_t max_packet_size;
+
+	ret = request_firmware(&fw, firmware_name, &udev->dev);
+	if (ret) {
+		log("download err : %d", ret);
+		return ret;
+	}
+
+	fwlength = fw->size;
+
+	fwbuf = kzalloc(fwlength, GFP_KERNEL);
+	if (!fwbuf) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	memcpy(fwbuf, fw->data, fwlength);
+
+	max_packet_size = udev->ep_out[0x1]->desc.wMaxPacketSize;
+	log("\t\t download size : %d", (int)max_packet_size);
+
+	for (offset = 0; offset < fwlength; offset += max_packet_size) {
+		actual_length = 0;
+		ret = usb_bulk_msg(udev,
+				usb_sndbulkpipe(udev, 0x01), /* ep 1 */
+				fwbuf + offset,
+				min(max_packet_size, fwlength - offset),
+				&actual_length,
+				HZ * 10);
+		if (ret)
+			break;
+	}
+	kfree(fwbuf);
+out:
+	release_firmware(fw);
+	return ret;
+}
+
+/* one-to-one map : poseidon{} <----> usb_device{}'s port */
+static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev)
+{
+	pd->portnum = udev->portnum;
+}
+
+/* fixup something for poseidon */
+static inline struct poseidon *fixup(struct poseidon *pd)
+{
+	list_del(&pd->device_list);
+
+	kref_get(&pd->kref);
+
+	/* old udev and interface have gone, so put back reference . */
+	usb_put_dev(pd->udev);
+	usb_put_intf(pd->interface);
+	usb_autopm_set_interface(pd->interface);
+
+	log("event : %d\n", pd->msg.event);
+	return pd;
+}
+
+static struct poseidon *find_old_poseidon(struct usb_device *udev)
+{
+	struct poseidon *pd;
+
+	list_for_each_entry(pd, &pd_device_list, device_list) {
+		if (pd->portnum == udev->portnum && in_hibernation(pd))
+			return fixup(pd);
+	}
+	return NULL;
+}
+
+#ifdef CONFIG_PM
+/* Is the card working now ? */
+static inline int is_working(struct poseidon *pd)
+{
+	if (pd->state & POSEIDON_STATE_IDLE_HIBERANTION)
+		return 0;
+	return pd->interface->pm_usage_cnt > 0;
+}
+
+static int poseidon_suspend(struct usb_interface *intf, pm_message_t msg)
+{
+	struct poseidon *pd = usb_get_intfdata(intf);
+
+	if (!is_working(pd)) {
+		if (pd->interface->pm_usage_cnt <= 0
+			&& !in_hibernation(pd)) {
+			pd->msg.event = PM_EVENT_AUTO_SUSPEND;
+			pd->pm_resume = NULL; /*  a good guard */
+			printk(KERN_DEBUG "\n\t ++ TLG2300 auto suspend ++\n");
+		}
+		return 0;
+	}
+	pd->msg = msg;
+	return pd->pm_suspend ? pd->pm_suspend(pd) : 0;
+}
+
+static int poseidon_resume(struct usb_interface *intf)
+{
+	struct poseidon *pd = usb_get_intfdata(intf);
+
+	printk(KERN_DEBUG "\n\t ++ TLG2300 resume ++\n");
+	if (!is_working(pd)) {
+		if (PM_EVENT_AUTO_SUSPEND == pd->msg.event)
+			pd->msg = PMSG_ON;
+		return 0;
+	}
+	return pd->pm_resume ? pd->pm_resume(pd) : 0;
+}
+
+static void hibernation_resume(struct work_struct *w)
+{
+	struct poseidon *pd = container_of(w, struct poseidon, pm_work);
+
+	log();
+	pd->msg.event = 0; /* clear it here */
+	pd->state &= ~POSEIDON_STATE_DISCONNECT;
+
+	/*
+	 *  we hibernated in the order : close() --> disconnect()
+	 *  so now ,we must do in reverse order : open() --> resume();
+	 */
+	if (!pd->pm_open(pd->file_for_stream))
+		pd->pm_resume(pd);
+}
+#endif
+
+static bool check_firmware(struct usb_device *udev, int *down_firmware)
+{
+	void *buf;
+	int ret;
+	struct cmd_firmware_vers_s *cmd_firm;
+
+	buf = kzalloc(sizeof(*cmd_firm) + sizeof(u32), GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	ret = usb_control_msg(udev,
+			 usb_rcvctrlpipe(udev, 0),
+			 REQ_GET_CMD | GET_FW_ID,
+			 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			 0,
+			 0,
+			 buf,
+			 sizeof(*cmd_firm) + sizeof(u32),
+			 USB_CTRL_GET_TIMEOUT);
+	kfree(buf);
+
+	if (ret < 0) {
+		*down_firmware = 1;
+		return firmware_download(udev);
+	}
+	return ret;
+}
+
+static int poseidon_probe(struct usb_interface *interface,
+				const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct poseidon *pd = NULL;
+	int ret = 0;
+
+	check_firmware(udev, &ret);
+	if (ret)
+		return 0;
+
+	pd = find_old_poseidon(udev);
+	if (!pd) {
+		pd = kzalloc(sizeof(*pd), GFP_KERNEL);
+		if (!pd)
+			return -ENOMEM;
+		kref_init(&pd->kref);
+		set_map_flags(pd, udev);
+	}
+
+	pd->udev = usb_get_dev(udev);
+	pd->interface = usb_get_intf(interface);
+	pd->country_code = 86;
+	usb_set_intfdata(interface, pd);
+	mutex_init(&pd->lock);
+
+	/* register devices in /dev */
+	pd_video_init(pd);
+	poseidon_audio_init(pd);
+	vbi_init(pd);
+
+	poseidon_fm_init(pd);
+	pd_dvb_usb_device_init(pd);
+
+	INIT_LIST_HEAD(&pd->device_list);
+	list_add_tail(&pd->device_list, &pd_device_list);
+
+	device_init_wakeup(&udev->dev, 1);
+#ifdef CONFIG_PM
+	pd->udev->autosuspend_disabled = 0;
+	pd->udev->autoresume_disabled = 0;
+	pd->udev->autosuspend_delay = HZ * PM_SUSPEND_DELAY;
+
+	if (in_hibernation(pd)) {
+		INIT_WORK(&pd->pm_work, hibernation_resume);
+		schedule_work(&pd->pm_work);
+	}
+#endif
+	return 0;
+}
+
+static void poseidon_disconnect(struct usb_interface *interface)
+{
+	struct poseidon *pd = usb_get_intfdata(interface);
+
+	if (!pd)
+		return;
+
+	mutex_lock(&pd->lock);
+	pd->state |= POSEIDON_STATE_DISCONNECT;
+	mutex_unlock(&pd->lock);
+
+	/* stop urb transferring */
+	pd_video_stop_stream(pd);
+	dvb_stop_streaming(&pd->dvb_data);
+
+	lock_kernel();
+	{
+		pd_dvb_usb_device_exit(pd);
+		poseidon_fm_exit(pd);
+
+		vbi_exit(pd);
+		poseidon_audio_free(pd);
+		pd_video_exit(pd);
+	}
+	unlock_kernel();
+
+	usb_set_intfdata(interface, NULL);
+	kref_put(&pd->kref, poseidon_delete);
+}
+
+struct usb_driver poseidon_driver = {
+	.name		= "poseidon",
+	.probe		= poseidon_probe,
+	.disconnect	= poseidon_disconnect,
+	.id_table	= id_table,
+#ifdef CONFIG_PM
+	.suspend	= poseidon_suspend,
+	.resume		= poseidon_resume,
+#endif
+	.supports_autosuspend = 1,
+};
+
+static int __init poseidon_init(void)
+{
+	int ret;
+
+	ret = usb_register(&poseidon_driver);
+	if (ret)
+		return ret;
+	register_pm_notifier(&pm_notifer);
+	return ret;
+}
+
+static void __exit poseidon_exit(void)
+{
+	unregister_pm_notifier(&pm_notifer);
+	usb_deregister(&poseidon_driver);
+}
+
+module_init(poseidon_init);
+module_exit(poseidon_exit);
+
+MODULE_AUTHOR("Telegent Systems");
+MODULE_DESCRIPTION("For tlg2300-based USB device ");
+MODULE_LICENSE("GPL");
