Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (120 commits)
  cx231xx: Convert to snd_card_create()
  V4L/DVB (11440): PWC: fix build error when CONFIG_INPUT=m
  V4L/DVB (11439): UVC: uvc_status_cleanup(): undefined reference to `input_unregister_device'
  V4L/DVB (11438): au0828: fix Kconfig dependance
  V4L/DVB (11437): pvrusb2: Drop client_register/unregister stubs
  V4L/DVB (11436): radio-mr800: convert to to v4l2_device
  V4L/DVB (11435): dsbr100 radio: convert to to v4l2_device
  V4L/DVB: zr364xx: remove unused #include <version.h>
  V4L/DVB: usbvision: remove unused #include <version.h>
  V4L/DVB (11427): gspca - m5602: Minor cleanups
  V4L/DVB (11426): gspca - m5602: Don't touch hflip/vflip register on Read/Modify/Write
  V4L/DVB (11425): gspca - m5602: Move the vflip quirk to probe stage.
  V4L/DVB (11424): gspca - m5602-ov9650: Use the local ctrl cache. Adjust image on vflip.
  V4L/DVB (11423): gspca - m5602-ov9650: Add a disconnect hook, setup a ctrl cache ctrl.
  V4L/DVB (11422): gspca - m5602-ov9650: Replace a magic constant with a define
  V4L/DVB (11421): gspca - m5602-ov9650: Synthesize modesetting.
  V4L/DVB (11420): gspca - m5602: Improve error handling in the ov9650 driver
  V4L/DVB (11419): gspca - m5602-ov9650: Don't read exposure data from COM1.
  V4L/DVB (11418): gspca - m5602-ov9650: Auto white balancing is on by default
  V4L/DVB (11417): gspca - m5602-ov9650: Autogain is on by default
  ...

12 files changed, 1119 insertions, 33 deletions

diff --git a/drivers/media/dvb/dvb-usb/Kconfig b/drivers/media/dvb/dvb-usb/Kconfig
index 6103caad164..60955a70d88 100644
--- a/drivers/media/dvb/dvb-usb/Kconfig
+++ b/drivers/media/dvb/dvb-usb/Kconfig
@@ -294,7 +294,7 @@ config DVB_USB_DTV5100
 
 config DVB_USB_AF9015
 	tristate "Afatech AF9015 DVB-T USB2.0 support"
-	depends on DVB_USB && EXPERIMENTAL
+	depends on DVB_USB
 	select DVB_AF9013
 	select DVB_PLL              if !DVB_FE_CUSTOMISE
 	select MEDIA_TUNER_MT2060   if !MEDIA_TUNER_CUSTOMISE
@@ -309,6 +309,6 @@ config DVB_USB_CE6230
 	tristate "Intel CE6230 DVB-T USB2.0 support"
 	depends on DVB_USB && EXPERIMENTAL
 	select DVB_ZL10353
-	select MEDIA_TUNER_MXL5005S if !MEDIA_TUNER_CUSTOMIZE
+	select MEDIA_TUNER_MXL5005S if !MEDIA_TUNER_CUSTOMISE
 	help
 	  Say Y here to support the Intel CE6230 DVB-T USB2.0 receiver
diff --git a/drivers/media/dvb/dvb-usb/af9015.c b/drivers/media/dvb/dvb-usb/af9015.c
index f0ba8b07b84..53bfc8e42fb 100644
--- a/drivers/media/dvb/dvb-usb/af9015.c
+++ b/drivers/media/dvb/dvb-usb/af9015.c
@@ -782,17 +782,14 @@ static int af9015_read_config(struct usb_device *udev)
 				  ARRAY_SIZE(af9015_ir_table_leadtek);
 				break;
 			case USB_VID_VISIONPLUS:
-				if (udev->descriptor.idProduct ==
-				cpu_to_le16(USB_PID_AZUREWAVE_AD_TU700)) {
-					af9015_properties[i].rc_key_map =
-					  af9015_rc_keys_twinhan;
-					af9015_properties[i].rc_key_map_size =
-					  ARRAY_SIZE(af9015_rc_keys_twinhan);
-					af9015_config.ir_table =
-					  af9015_ir_table_twinhan;
-					af9015_config.ir_table_size =
-					  ARRAY_SIZE(af9015_ir_table_twinhan);
-				}
+				af9015_properties[i].rc_key_map =
+				  af9015_rc_keys_twinhan;
+				af9015_properties[i].rc_key_map_size =
+				  ARRAY_SIZE(af9015_rc_keys_twinhan);
+				af9015_config.ir_table =
+				  af9015_ir_table_twinhan;
+				af9015_config.ir_table_size =
+				  ARRAY_SIZE(af9015_ir_table_twinhan);
 				break;
 			case USB_VID_KWORLD_2:
 				/* TODO: use correct rc keys */
@@ -833,6 +830,16 @@ static int af9015_read_config(struct usb_device *udev)
 					  af9015_ir_table_msi;
 					af9015_config.ir_table_size =
 					  ARRAY_SIZE(af9015_ir_table_msi);
+				} else if (udev->descriptor.idProduct ==
+					cpu_to_le16(USB_PID_TREKSTOR_DVBT)) {
+					af9015_properties[i].rc_key_map =
+					  af9015_rc_keys_trekstor;
+					af9015_properties[i].rc_key_map_size =
+					  ARRAY_SIZE(af9015_rc_keys_trekstor);
+					af9015_config.ir_table =
+					  af9015_ir_table_trekstor;
+					af9015_config.ir_table_size =
+					  ARRAY_SIZE(af9015_ir_table_trekstor);
 				}
 				break;
 			case USB_VID_AVERMEDIA:
@@ -981,6 +988,21 @@ error:
 	if (ret)
 		err("eeprom read failed:%d", ret);
 
+	/* AverMedia AVerTV Volar Black HD (A850) device have bad EEPROM
+	   content :-( Override some wrong values here. */
+	if (le16_to_cpu(udev->descriptor.idVendor) == USB_VID_AVERMEDIA &&
+	    le16_to_cpu(udev->descriptor.idProduct) == USB_PID_AVERMEDIA_A850) {
+		deb_info("%s: AverMedia A850: overriding config\n", __func__);
+		/* disable dual mode */
+		af9015_config.dual_mode = 0;
+		 /* disable 2nd adapter */
+		for (i = 0; i < af9015_properties_count; i++)
+			af9015_properties[i].num_adapters = 1;
+
+		/* set correct IF */
+		af9015_af9013_config[0].tuner_if = 4570;
+	}
+
 	return ret;
 }
 
@@ -1237,6 +1259,9 @@ static struct usb_device_id af9015_usb_table[] = {
 /* 15 */{USB_DEVICE(USB_VID_MSI_2,     USB_PID_MSI_DIGI_VOX_MINI_III)},
 	{USB_DEVICE(USB_VID_KWORLD_2,  USB_PID_KWORLD_395U)},
 	{USB_DEVICE(USB_VID_KWORLD_2,  USB_PID_KWORLD_395U_2)},
+	{USB_DEVICE(USB_VID_KWORLD_2,  USB_PID_KWORLD_395U_3)},
+	{USB_DEVICE(USB_VID_AFATECH,   USB_PID_TREKSTOR_DVBT)},
+	{USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A850)},
 	{0},
 };
 MODULE_DEVICE_TABLE(usb, af9015_usb_table);
@@ -1401,7 +1426,7 @@ static struct dvb_usb_device_properties af9015_properties[] = {
 
 		.i2c_algo = &af9015_i2c_algo,
 
-		.num_device_descs = 7,
+		.num_device_descs = 9,
 		.devices = {
 			{
 				.name = "Xtensions XD-380",
@@ -1437,7 +1462,19 @@ static struct dvb_usb_device_properties af9015_properties[] = {
 				.name = "KWorld USB DVB-T TV Stick II " \
 					"(VS-DVB-T 395U)",
 				.cold_ids = {&af9015_usb_table[16],
-					     &af9015_usb_table[17], NULL},
+					     &af9015_usb_table[17],
+					     &af9015_usb_table[18], NULL},
+				.warm_ids = {NULL},
+			},
+			{
+				.name = "TrekStor DVB-T USB Stick",
+				.cold_ids = {&af9015_usb_table[19], NULL},
+				.warm_ids = {NULL},
+			},
+			{
+				.name = "AverMedia AVerTV Volar Black HD " \
+					"(A850)",
+				.cold_ids = {&af9015_usb_table[20], NULL},
 				.warm_ids = {NULL},
 			},
 		}
diff --git a/drivers/media/dvb/dvb-usb/af9015.h b/drivers/media/dvb/dvb-usb/af9015.h
index 00e25714662..8d81a17c116 100644
--- a/drivers/media/dvb/dvb-usb/af9015.h
+++ b/drivers/media/dvb/dvb-usb/af9015.h
@@ -64,14 +64,6 @@
 
 #define AF9015_EEPROM_OFFSET (AF9015_EEPROM_SAW_BW2 - AF9015_EEPROM_SAW_BW1)
 
-#define AF9015_GPIO_ON (1 << 0)
-#define AF9015_GPIO_EN (1 << 1)
-#define AF9015_GPIO_O  (1 << 2)
-#define AF9015_GPIO_I  (1 << 3)
-
-#define AF9015_GPIO_TUNER_ON  (AF9015_GPIO_ON|AF9015_GPIO_EN)
-#define AF9015_GPIO_TUNER_OFF (AF9015_GPIO_ON|AF9015_GPIO_EN|AF9015_GPIO_O)
-
 struct req_t {
 	u8  cmd;       /* [0] */
 	/*  seq */     /* [1] */
@@ -120,11 +112,11 @@ struct af9015_config {
 
 enum af9015_remote {
 	AF9015_REMOTE_NONE                    = 0,
-	AF9015_REMOTE_A_LINK_DTU_M,
+/* 1 */	AF9015_REMOTE_A_LINK_DTU_M,
 	AF9015_REMOTE_MSI_DIGIVOX_MINI_II_V3,
 	AF9015_REMOTE_MYGICTV_U718,
 	AF9015_REMOTE_DIGITTRADE_DVB_T,
-	AF9015_REMOTE_AVERMEDIA_KS,
+/* 5 */	AF9015_REMOTE_AVERMEDIA_KS,
 };
 
 /* Leadtek WinFast DTV Dongle Gold */
@@ -691,4 +683,67 @@ static u8 af9015_ir_table_digittrade[] = {
 	0x00, 0xff, 0x1d, 0xe2, 0x40, 0x00, 0x00,
 };
 
+/* TREKSTOR DVB-T USB Stick */
+static struct dvb_usb_rc_key af9015_rc_keys_trekstor[] = {
+	{ 0x07, 0x04, KEY_AGAIN },		/* Home */
+	{ 0x07, 0x05, KEY_MUTE },		/* Mute */
+	{ 0x07, 0x06, KEY_UP },			/* Up */
+	{ 0x07, 0x07, KEY_DOWN },		/* Down */
+	{ 0x07, 0x09, KEY_RIGHT },		/* Right */
+	{ 0x07, 0x0a, KEY_ENTER },		/* OK */
+	{ 0x07, 0x0b, KEY_FASTFORWARD },	/* Fast forward */
+	{ 0x07, 0x0c, KEY_REWIND },		/* Rewind */
+	{ 0x07, 0x0d, KEY_PLAY },		/* Play/Pause */
+	{ 0x07, 0x0e, KEY_VOLUMEUP },		/* Volume + */
+	{ 0x07, 0x0f, KEY_VOLUMEDOWN },		/* Volume - */
+	{ 0x07, 0x10, KEY_RECORD },		/* Record */
+	{ 0x07, 0x11, KEY_STOP },		/* Stop */
+	{ 0x07, 0x12, KEY_ZOOM },		/* TV */
+	{ 0x07, 0x13, KEY_EPG },		/* Info/EPG */
+	{ 0x07, 0x14, KEY_CHANNELDOWN },	/* Channel - */
+	{ 0x07, 0x15, KEY_CHANNELUP },		/* Channel + */
+	{ 0x07, 0x1e, KEY_1 },
+	{ 0x07, 0x1f, KEY_2 },
+	{ 0x07, 0x20, KEY_3 },
+	{ 0x07, 0x21, KEY_4 },
+	{ 0x07, 0x22, KEY_5 },
+	{ 0x07, 0x23, KEY_6 },
+	{ 0x07, 0x24, KEY_7 },
+	{ 0x07, 0x25, KEY_8 },
+	{ 0x07, 0x26, KEY_9 },
+	{ 0x07, 0x08, KEY_LEFT },		/* LEFT */
+	{ 0x07, 0x27, KEY_0 },
+};
+
+static u8 af9015_ir_table_trekstor[] = {
+	0x00, 0xff, 0x86, 0x79, 0x04, 0x07, 0x00,
+	0x00, 0xff, 0x85, 0x7a, 0x05, 0x07, 0x00,
+	0x00, 0xff, 0x87, 0x78, 0x06, 0x07, 0x00,
+	0x00, 0xff, 0x8c, 0x73, 0x07, 0x07, 0x00,
+	0x00, 0xff, 0x89, 0x76, 0x09, 0x07, 0x00,
+	0x00, 0xff, 0x88, 0x77, 0x0a, 0x07, 0x00,
+	0x00, 0xff, 0x8a, 0x75, 0x0b, 0x07, 0x00,
+	0x00, 0xff, 0x9e, 0x61, 0x0c, 0x07, 0x00,
+	0x00, 0xff, 0x8d, 0x72, 0x0d, 0x07, 0x00,
+	0x00, 0xff, 0x8b, 0x74, 0x0e, 0x07, 0x00,
+	0x00, 0xff, 0x9b, 0x64, 0x0f, 0x07, 0x00,
+	0x00, 0xff, 0x9d, 0x62, 0x10, 0x07, 0x00,
+	0x00, 0xff, 0x8e, 0x71, 0x11, 0x07, 0x00,
+	0x00, 0xff, 0x9c, 0x63, 0x12, 0x07, 0x00,
+	0x00, 0xff, 0x8f, 0x70, 0x13, 0x07, 0x00,
+	0x00, 0xff, 0x93, 0x6c, 0x14, 0x07, 0x00,
+	0x00, 0xff, 0x97, 0x68, 0x15, 0x07, 0x00,
+	0x00, 0xff, 0x92, 0x6d, 0x1e, 0x07, 0x00,
+	0x00, 0xff, 0x96, 0x69, 0x1f, 0x07, 0x00,
+	0x00, 0xff, 0x9a, 0x65, 0x20, 0x07, 0x00,
+	0x00, 0xff, 0x91, 0x6e, 0x21, 0x07, 0x00,
+	0x00, 0xff, 0x95, 0x6a, 0x22, 0x07, 0x00,
+	0x00, 0xff, 0x99, 0x66, 0x23, 0x07, 0x00,
+	0x00, 0xff, 0x90, 0x6f, 0x24, 0x07, 0x00,
+	0x00, 0xff, 0x94, 0x6b, 0x25, 0x07, 0x00,
+	0x00, 0xff, 0x98, 0x67, 0x26, 0x07, 0x00,
+	0x00, 0xff, 0x9f, 0x60, 0x08, 0x07, 0x00,
+	0x00, 0xff, 0x84, 0x7b, 0x27, 0x07, 0x00,
+};
+
 #endif
diff --git a/drivers/media/dvb/dvb-usb/ce6230.c b/drivers/media/dvb/dvb-usb/ce6230.c
index 5862820f109..52badc00e67 100644
--- a/drivers/media/dvb/dvb-usb/ce6230.c
+++ b/drivers/media/dvb/dvb-usb/ce6230.c
@@ -250,6 +250,7 @@ static int ce6230_probe(struct usb_interface *intf,
 
 static struct usb_device_id ce6230_table[] = {
 	{ USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500) },
+	{ USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310) },
 	{ } /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, ce6230_table);
@@ -284,13 +285,18 @@ static struct dvb_usb_device_properties ce6230_properties = {
 
 	.i2c_algo = &ce6230_i2c_algo,
 
-	.num_device_descs = 1,
+	.num_device_descs = 2,
 	.devices = {
 		{
 			.name = "Intel CE9500 reference design",
 			.cold_ids = {NULL},
 			.warm_ids = {&ce6230_table[0], NULL},
 		},
+		{
+			.name = "AVerMedia A310 USB 2.0 DVB-T tuner",
+			.cold_ids = {NULL},
+			.warm_ids = {&ce6230_table[1], NULL},
+		},
 	}
 };
 
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-ids.h b/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
index dc7ea21cd13..f506c74119f 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
@@ -65,6 +65,7 @@
 #define USB_PID_AFATECH_AF9005				0x9020
 #define USB_PID_AFATECH_AF9015_9015			0x9015
 #define USB_PID_AFATECH_AF9015_9016			0x9016
+#define USB_PID_TREKSTOR_DVBT				0x901b
 #define USB_VID_ALINK_DTU				0xf170
 #define USB_PID_ANSONIC_DVBT_USB			0x6000
 #define USB_PID_ANYSEE					0x861f
@@ -102,6 +103,7 @@
 #define USB_PID_KWORLD_399U				0xe399
 #define USB_PID_KWORLD_395U				0xe396
 #define USB_PID_KWORLD_395U_2				0xe39b
+#define USB_PID_KWORLD_395U_3				0xe395
 #define USB_PID_KWORLD_PC160_2T				0xc160
 #define USB_PID_KWORLD_VSTREAM_COLD			0x17de
 #define USB_PID_KWORLD_VSTREAM_WARM			0x17df
@@ -167,6 +169,8 @@
 #define USB_PID_AVERMEDIA_VOLAR_X			0xa815
 #define USB_PID_AVERMEDIA_VOLAR_X_2			0x8150
 #define USB_PID_AVERMEDIA_A309				0xa309
+#define USB_PID_AVERMEDIA_A310				0xa310
+#define USB_PID_AVERMEDIA_A850				0x850a
 #define USB_PID_TECHNOTREND_CONNECT_S2400               0x3006
 #define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY	0x005a
 #define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY_2	0x0081
diff --git a/drivers/media/dvb/firewire/firedtv-avc.c b/drivers/media/dvb/firewire/firedtv-avc.c
index 12f7730184a..32526f103b5 100644
--- a/drivers/media/dvb/firewire/firedtv-avc.c
+++ b/drivers/media/dvb/firewire/firedtv-avc.c
@@ -151,7 +151,7 @@ static void debug_fcp(const u8 *data, int length)
 		subunit_type = data[1] >> 3;
 		subunit_id = data[1] & 7;
 		op = subunit_type == 0x1e || subunit_id == 5 ? ~0 : data[2];
-		printk(KERN_INFO "%ssu=%x.%x l=%zu: %-8s - %s\n",
+		printk(KERN_INFO "%ssu=%x.%x l=%d: %-8s - %s\n",
 		       prefix, subunit_type, subunit_id, length,
 		       debug_fcp_ctype(data[0]),
 		       debug_fcp_opcode(op, data, length));
diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index a486a7f81fa..23e4cffeba3 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -513,6 +513,13 @@ config DVB_LGS8GL5
 	help
 	  A DMB-TH tuner module. Say Y when you want to support this frontend.
 
+config DVB_LGS8GXX
+	tristate "Legend Silicon LGS8913/LGS8GL5/LGS8GXX DMB-TH demodulator"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A DMB-TH tuner module. Say Y when you want to support this frontend.
+
 comment "Tools to develop new frontends"
 
 config DVB_DUMMY_FE
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 65a336aa1db..bc2b00abd10 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_DVB_TDA10048) += tda10048.o
 obj-$(CONFIG_DVB_TUNER_CX24113) += cx24113.o
 obj-$(CONFIG_DVB_S5H1411) += s5h1411.o
 obj-$(CONFIG_DVB_LGS8GL5) += lgs8gl5.o
+obj-$(CONFIG_DVB_LGS8GXX) += lgs8gxx.o
 obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
 obj-$(CONFIG_DVB_AF9013) += af9013.o
 obj-$(CONFIG_DVB_CX24116) += cx24116.o
diff --git a/drivers/media/dvb/frontends/au8522_decoder.c b/drivers/media/dvb/frontends/au8522_decoder.c
index d63e1527dc8..9e9a75576a1 100644
--- a/drivers/media/dvb/frontends/au8522_decoder.c
+++ b/drivers/media/dvb/frontends/au8522_decoder.c
@@ -652,7 +652,7 @@ static int au8522_reset(struct v4l2_subdev *sd, u32 val)
 }
 
 static int au8522_s_video_routing(struct v4l2_subdev *sd,
-				  const struct v4l2_routing *route)
+					u32 input, u32 output, u32 config)
 {
 	struct au8522_state *state = to_state(sd);
 
@@ -663,11 +663,11 @@ static int au8522_s_video_routing(struct v4l2_subdev *sd,
 	   closed), and then came back to analog mode */
 	au8522_writereg(state, 0x106, 1);
 
-	if (route->input == AU8522_COMPOSITE_CH1) {
+	if (input == AU8522_COMPOSITE_CH1) {
 		au8522_setup_cvbs_mode(state);
-	} else if (route->input == AU8522_SVIDEO_CH13) {
+	} else if (input == AU8522_SVIDEO_CH13) {
 		au8522_setup_svideo_mode(state);
-	} else if (route->input == AU8522_COMPOSITE_CH4_SIF) {
+	} else if (input == AU8522_COMPOSITE_CH4_SIF) {
 		au8522_setup_cvbs_tuner_mode(state);
 	} else {
 		printk(KERN_ERR "au8522 mode not currently supported\n");
@@ -677,10 +677,10 @@ static int au8522_s_video_routing(struct v4l2_subdev *sd,
 }
 
 static int au8522_s_audio_routing(struct v4l2_subdev *sd,
-				  const struct v4l2_routing *route)
+					u32 input, u32 output, u32 config)
 {
 	struct au8522_state *state = to_state(sd);
-	set_audio_input(state, route->input);
+	set_audio_input(state, input);
 	return 0;
 }
 
diff --git a/drivers/media/dvb/frontends/lgs8gxx.c b/drivers/media/dvb/frontends/lgs8gxx.c
new file mode 100644
index 00000000000..f9785dfe735
--- /dev/null
+++ b/drivers/media/dvb/frontends/lgs8gxx.c
@@ -0,0 +1,816 @@
+/*
+ *    Support for Legend Silicon DMB-TH demodulator
+ *    LGS8913, LGS8GL5
+ *    experimental support LGS8G42, LGS8G52
+ *
+ *    Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
+ *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
+ *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <asm/div64.h>
+
+#include "dvb_frontend.h"
+
+#include "lgs8gxx.h"
+#include "lgs8gxx_priv.h"
+
+#define dprintk(args...) \
+	do { \
+		if (debug) \
+			printk(KERN_DEBUG "lgs8gxx: " args); \
+	} while (0)
+
+static int debug;
+static int fake_signal_str;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+module_param(fake_signal_str, int, 0644);
+MODULE_PARM_DESC(fake_signal_str, "fake signal strength for LGS8913."
+"Signal strength calculation is slow.(default:off).");
+
+/* LGS8GXX internal helper functions */
+
+static int lgs8gxx_write_reg(struct lgs8gxx_state *priv, u8 reg, u8 data)
+{
+	int ret;
+	u8 buf[] = { reg, data };
+	struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 };
+
+	msg.addr = priv->config->demod_address;
+	if (reg >= 0xC0)
+		msg.addr += 0x02;
+
+	if (debug >= 2)
+		printk(KERN_DEBUG "%s: reg=0x%02X, data=0x%02X\n",
+			__func__, reg, data);
+
+	ret = i2c_transfer(priv->i2c, &msg, 1);
+
+	if (ret != 1)
+		dprintk(KERN_DEBUG "%s: error reg=0x%x, data=0x%x, ret=%i\n",
+			__func__, reg, data, ret);
+
+	return (ret != 1) ? -1 : 0;
+}
+
+static int lgs8gxx_read_reg(struct lgs8gxx_state *priv, u8 reg, u8 *p_data)
+{
+	int ret;
+	u8 dev_addr;
+
+	u8 b0[] = { reg };
+	u8 b1[] = { 0 };
+	struct i2c_msg msg[] = {
+		{ .flags = 0, .buf = b0, .len = 1 },
+		{ .flags = I2C_M_RD, .buf = b1, .len = 1 },
+	};
+
+	dev_addr = priv->config->demod_address;
+	if (reg >= 0xC0)
+		dev_addr += 0x02;
+	msg[1].addr =  msg[0].addr = dev_addr;
+
+	ret = i2c_transfer(priv->i2c, msg, 2);
+	if (ret != 2) {
+		dprintk(KERN_DEBUG "%s: error reg=0x%x, ret=%i\n",
+			__func__, reg, ret);
+		return -1;
+	}
+
+	*p_data = b1[0];
+	if (debug >= 2)
+		printk(KERN_DEBUG "%s: reg=0x%02X, data=0x%02X\n",
+			__func__, reg, b1[0]);
+	return 0;
+}
+
+static int lgs8gxx_soft_reset(struct lgs8gxx_state *priv)
+{
+	lgs8gxx_write_reg(priv, 0x02, 0x00);
+	msleep(1);
+	lgs8gxx_write_reg(priv, 0x02, 0x01);
+	msleep(100);
+
+	return 0;
+}
+
+static int lgs8gxx_set_ad_mode(struct lgs8gxx_state *priv)
+{
+	const struct lgs8gxx_config *config = priv->config;
+	u8 if_conf;
+
+	if_conf = 0x10; /* AGC output on; */
+
+	if_conf |=
+		((config->ext_adc) ? 0x80 : 0x00) |
+		((config->if_neg_center) ? 0x04 : 0x00) |
+		((config->if_freq == 0) ? 0x08 : 0x00) | /* Baseband */
+		((config->ext_adc && config->adc_signed) ? 0x02 : 0x00) |
+		((config->ext_adc && config->if_neg_edge) ? 0x01 : 0x00);
+
+	if (config->ext_adc &&
+		(config->prod == LGS8GXX_PROD_LGS8G52)) {
+		lgs8gxx_write_reg(priv, 0xBA, 0x40);
+	}
+
+	lgs8gxx_write_reg(priv, 0x07, if_conf);
+
+	return 0;
+}
+
+static int lgs8gxx_set_if_freq(struct lgs8gxx_state *priv, u32 freq /*in kHz*/)
+{
+	u64 val;
+	u32 v32;
+	u32 if_clk;
+
+	if_clk = priv->config->if_clk_freq;
+
+	val = freq;
+	if (freq != 0) {
+		val *= (u64)1 << 32;
+		if (if_clk != 0)
+			do_div(val, if_clk);
+		v32 = val & 0xFFFFFFFF;
+		dprintk("Set IF Freq to %dkHz\n", freq);
+	} else {
+		v32 = 0;
+		dprintk("Set IF Freq to baseband\n");
+	}
+	dprintk("AFC_INIT_FREQ = 0x%08X\n", v32);
+
+	lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32));
+	lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 8));
+	lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 16));
+	lgs8gxx_write_reg(priv, 0x0C, 0xFF & (v32 >> 24));
+
+	return 0;
+}
+
+static int lgs8gxx_set_mode_auto(struct lgs8gxx_state *priv)
+{
+	u8 t;
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8gxx_write_reg(priv, 0xC6, 0x01);
+
+	lgs8gxx_read_reg(priv, 0x7E, &t);
+	lgs8gxx_write_reg(priv, 0x7E, t | 0x01);
+
+	/* clear FEC self reset */
+	lgs8gxx_read_reg(priv, 0xC5, &t);
+	lgs8gxx_write_reg(priv, 0xC5, t & 0xE0);
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		/* FEC auto detect */
+		lgs8gxx_write_reg(priv, 0xC1, 0x03);
+
+		lgs8gxx_read_reg(priv, 0x7C, &t);
+		t = (t & 0x8C) | 0x03;
+		lgs8gxx_write_reg(priv, 0x7C, t);
+	}
+
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		/* BER test mode */
+		lgs8gxx_read_reg(priv, 0xC3, &t);
+		t = (t & 0xEF) |  0x10;
+		lgs8gxx_write_reg(priv, 0xC3, t);
+	}
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8G52)
+		lgs8gxx_write_reg(priv, 0xD9, 0x40);
+
+	return 0;
+}
+
+static int lgs8gxx_set_mode_manual(struct lgs8gxx_state *priv)
+{
+	int ret = 0;
+	u8 t;
+
+	/* turn off auto-detect; manual settings */
+	lgs8gxx_write_reg(priv, 0x7E, 0);
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8gxx_write_reg(priv, 0xC1, 0);
+
+	ret = lgs8gxx_read_reg(priv, 0xC5, &t);
+	t = (t & 0xE0) | 0x06;
+	lgs8gxx_write_reg(priv, 0xC5, t);
+
+	lgs8gxx_soft_reset(priv);
+
+	return 0;
+}
+
+static int lgs8gxx_is_locked(struct lgs8gxx_state *priv, u8 *locked)
+{
+	int ret = 0;
+	u8 t;
+
+	ret = lgs8gxx_read_reg(priv, 0x4B, &t);
+	if (ret != 0)
+		return ret;
+
+	*locked = ((t & 0xC0) == 0xC0) ? 1 : 0;
+	return 0;
+}
+
+static int lgs8gxx_is_autodetect_finished(struct lgs8gxx_state *priv,
+					  u8 *finished)
+{
+	int ret = 0;
+	u8 t;
+
+	ret = lgs8gxx_read_reg(priv, 0xA4, &t);
+	if (ret != 0)
+		return ret;
+
+	*finished = ((t & 0x3) == 0x1) ? 1 : 0;
+
+	return 0;
+}
+
+static int lgs8gxx_autolock_gi(struct lgs8gxx_state *priv, u8 gi, u8 *locked)
+{
+	int err;
+	u8 ad_fini = 0;
+
+	if (gi == GI_945)
+		dprintk("try GI 945\n");
+	else if (gi == GI_595)
+		dprintk("try GI 595\n");
+	else if (gi == GI_420)
+		dprintk("try GI 420\n");
+	lgs8gxx_write_reg(priv, 0x04, gi);
+	lgs8gxx_soft_reset(priv);
+	msleep(50);
+	err = lgs8gxx_is_autodetect_finished(priv, &ad_fini);
+	if (err != 0)
+		return err;
+	if (ad_fini) {
+		err = lgs8gxx_is_locked(priv, locked);
+		if (err != 0)
+			return err;
+	}
+
+	return 0;
+}
+
+static int lgs8gxx_auto_detect(struct lgs8gxx_state *priv,
+			       u8 *detected_param, u8 *gi)
+{
+	int i, j;
+	int err = 0;
+	u8 locked = 0, tmp_gi;
+
+	dprintk("%s\n", __func__);
+
+	lgs8gxx_set_mode_auto(priv);
+	/* Guard Interval */
+	lgs8gxx_write_reg(priv, 0x03, 00);
+
+	for (i = 0; i < 2; i++) {
+		for (j = 0; j < 2; j++) {
+			tmp_gi = GI_945;
+			err = lgs8gxx_autolock_gi(priv, GI_945, &locked);
+			if (err)
+				goto out;
+			if (locked)
+				goto locked;
+		}
+		for (j = 0; j < 2; j++) {
+			tmp_gi = GI_420;
+			err = lgs8gxx_autolock_gi(priv, GI_420, &locked);
+			if (err)
+				goto out;
+			if (locked)
+				goto locked;
+		}
+		tmp_gi = GI_595;
+		err = lgs8gxx_autolock_gi(priv, GI_595, &locked);
+		if (err)
+			goto out;
+		if (locked)
+			goto locked;
+	}
+
+locked:
+	if ((err == 0) && (locked == 1)) {
+		u8 t;
+
+		lgs8gxx_read_reg(priv, 0xA2, &t);
+		*detected_param = t;
+
+		if (tmp_gi == GI_945)
+			dprintk("GI 945 locked\n");
+		else if (tmp_gi == GI_595)
+			dprintk("GI 595 locked\n");
+		else if (tmp_gi == GI_420)
+			dprintk("GI 420 locked\n");
+		*gi = tmp_gi;
+	}
+	if (!locked)
+		err = -1;
+
+out:
+	return err;
+}
+
+static void lgs8gxx_auto_lock(struct lgs8gxx_state *priv)
+{
+	s8 err;
+	u8 gi = 0x2;
+	u8 detected_param = 0;
+
+	err = lgs8gxx_auto_detect(priv, &detected_param, &gi);
+
+	if (err != 0) {
+		dprintk("lgs8gxx_auto_detect failed\n");
+	}
+
+	/* Apply detected parameters */
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		u8 inter_leave_len = detected_param & TIM_MASK ;
+		inter_leave_len = (inter_leave_len == TIM_LONG) ? 0x60 : 0x40;
+		detected_param &= CF_MASK | SC_MASK  | LGS_FEC_MASK;
+		detected_param |= inter_leave_len;
+	}
+	lgs8gxx_write_reg(priv, 0x7D, detected_param);
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8gxx_write_reg(priv, 0xC0, detected_param);
+	/* lgs8gxx_soft_reset(priv); */
+
+	/* Enter manual mode */
+	lgs8gxx_set_mode_manual(priv);
+
+	switch (gi) {
+	case GI_945:
+		priv->curr_gi = 945; break;
+	case GI_595:
+		priv->curr_gi = 595; break;
+	case GI_420:
+		priv->curr_gi = 420; break;
+	default:
+		priv->curr_gi = 945; break;
+	}
+}
+
+static int lgs8gxx_set_mpeg_mode(struct lgs8gxx_state *priv,
+	u8 serial, u8 clk_pol, u8 clk_gated)
+{
+	int ret = 0;
+	u8 t;
+
+	ret = lgs8gxx_read_reg(priv, 0xC2, &t);
+	if (ret != 0)
+		return ret;
+
+	t &= 0xF8;
+	t |= serial ? TS_SERIAL : TS_PARALLEL;
+	t |= clk_pol ? TS_CLK_INVERTED : TS_CLK_NORMAL;
+	t |= clk_gated ? TS_CLK_GATED : TS_CLK_FREERUN;
+
+	ret = lgs8gxx_write_reg(priv, 0xC2, t);
+	if (ret != 0)
+		return ret;
+
+	return 0;
+}
+
+
+/* LGS8913 demod frontend functions */
+
+static int lgs8913_init(struct lgs8gxx_state *priv)
+{
+	u8 t;
+
+	/* LGS8913 specific */
+	lgs8gxx_write_reg(priv, 0xc1, 0x3);
+
+	lgs8gxx_read_reg(priv, 0x7c, &t);
+	lgs8gxx_write_reg(priv, 0x7c, (t&0x8c) | 0x3);
+
+	/* LGS8913 specific */
+	lgs8gxx_read_reg(priv, 0xc3, &t);
+	lgs8gxx_write_reg(priv, 0xc3, t&0x10);
+
+
+	return 0;
+}
+
+static int lgs8gxx_init(struct dvb_frontend *fe)
+{
+	struct lgs8gxx_state *priv =
+		(struct lgs8gxx_state *)fe->demodulator_priv;
+	const struct lgs8gxx_config *config = priv->config;
+	u8 data = 0;
+	s8 err;
+	dprintk("%s\n", __func__);
+
+	lgs8gxx_read_reg(priv, 0, &data);
+	dprintk("reg 0 = 0x%02X\n", data);
+
+	/* Setup MPEG output format */
+	err = lgs8gxx_set_mpeg_mode(priv, config->serial_ts,
+				    config->ts_clk_pol,
+				    config->ts_clk_gated);
+	if (err != 0)
+		return -EIO;
+
+	if (config->prod == LGS8GXX_PROD_LGS8913)
+		lgs8913_init(priv);
+	lgs8gxx_set_if_freq(priv, priv->config->if_freq);
+	if (config->prod != LGS8GXX_PROD_LGS8913)
+		lgs8gxx_set_ad_mode(priv);
+
+	return 0;
+}
+
+static void lgs8gxx_release(struct dvb_frontend *fe)
+{
+	struct lgs8gxx_state *state = fe->demodulator_priv;
+	dprintk("%s\n", __func__);
+
+	kfree(state);
+}
+
+
+static int lgs8gxx_write(struct dvb_frontend *fe, u8 *buf, int len)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	if (len != 2)
+		return -EINVAL;
+
+	return lgs8gxx_write_reg(priv, buf[0], buf[1]);
+}
+
+static int lgs8gxx_set_fe(struct dvb_frontend *fe,
+			  struct dvb_frontend_parameters *fe_params)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	dprintk("%s\n", __func__);
+
+	/* set frequency */
+	if (fe->ops.tuner_ops.set_params) {
+		fe->ops.tuner_ops.set_params(fe, fe_params);
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 0);
+	}
+
+	/* start auto lock */
+	lgs8gxx_auto_lock(priv);
+
+	msleep(10);
+
+	return 0;
+}
+
+static int lgs8gxx_get_fe(struct dvb_frontend *fe,
+			  struct dvb_frontend_parameters *fe_params)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	u8 t;
+
+	dprintk("%s\n", __func__);
+
+	/* TODO: get real readings from device */
+	/* inversion status */
+	fe_params->inversion = INVERSION_OFF;
+
+	/* bandwidth */
+	fe_params->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
+
+
+	lgs8gxx_read_reg(priv, 0x7D, &t);
+	fe_params->u.ofdm.code_rate_HP = FEC_AUTO;
+	fe_params->u.ofdm.code_rate_LP = FEC_AUTO;
+
+	/* constellation */
+	switch (t & SC_MASK) {
+	case SC_QAM64:
+		fe_params->u.ofdm.constellation = QAM_64;
+		break;
+	case SC_QAM32:
+		fe_params->u.ofdm.constellation = QAM_32;
+		break;
+	case SC_QAM16:
+		fe_params->u.ofdm.constellation = QAM_16;
+		break;
+	case SC_QAM4:
+	case SC_QAM4NR:
+		fe_params->u.ofdm.constellation = QPSK;
+		break;
+	default:
+		fe_params->u.ofdm.constellation = QAM_64;
+	}
+
+	/* transmission mode */
+	fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
+
+	/* guard interval */
+	fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
+
+	/* hierarchy */
+	fe_params->u.ofdm.hierarchy_information = HIERARCHY_NONE;
+
+	return 0;
+}
+
+static
+int lgs8gxx_get_tune_settings(struct dvb_frontend *fe,
+			      struct dvb_frontend_tune_settings *fesettings)
+{
+	/* FIXME: copy from tda1004x.c */
+	fesettings->min_delay_ms = 800;
+	fesettings->step_size = 0;
+	fesettings->max_drift = 0;
+	return 0;
+}
+
+static int lgs8gxx_read_status(struct dvb_frontend *fe, fe_status_t *fe_status)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	s8 ret;
+	u8 t;
+
+	dprintk("%s\n", __func__);
+
+	ret = lgs8gxx_read_reg(priv, 0x4B, &t);
+	if (ret != 0)
+		return -EIO;
+
+	dprintk("Reg 0x4B: 0x%02X\n", t);
+
+	*fe_status = 0;
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
+		if ((t & 0x40) == 0x40)
+			*fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
+		if ((t & 0x80) == 0x80)
+			*fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC |
+				FE_HAS_LOCK;
+	} else {
+		if ((t & 0x80) == 0x80)
+			*fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+				FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+	}
+
+	/* success */
+	dprintk("%s: fe_status=0x%x\n", __func__, *fe_status);
+	return 0;
+}
+
+static int lgs8gxx_read_signal_agc(struct lgs8gxx_state *priv, u16 *signal)
+{
+	u16 v;
+	u8 agc_lvl[2], cat;
+
+	dprintk("%s()\n", __func__);
+	lgs8gxx_read_reg(priv, 0x3F, &agc_lvl[0]);
+	lgs8gxx_read_reg(priv, 0x3E, &agc_lvl[1]);
+
+	v = agc_lvl[0];
+	v <<= 8;
+	v |= agc_lvl[1];
+
+	dprintk("agc_lvl: 0x%04X\n", v);
+
+	if (v < 0x100)
+		cat = 0;
+	else if (v < 0x190)
+		cat = 5;
+	else if (v < 0x2A8)
+		cat = 4;
+	else if (v < 0x381)
+		cat = 3;
+	else if (v < 0x400)
+		cat = 2;
+	else if (v == 0x400)
+		cat = 1;
+	else
+		cat = 0;
+
+	*signal = cat;
+
+	return 0;
+}
+
+static int lgs8913_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal)
+{
+	u8 t; s8 ret;
+	s16 max_strength = 0;
+	u8 str;
+	u16 i, gi = priv->curr_gi;
+
+	dprintk("%s\n", __func__);
+
+	ret = lgs8gxx_read_reg(priv, 0x4B, &t);
+	if (ret != 0)
+		return -EIO;
+
+	if (fake_signal_str) {
+		if ((t & 0xC0) == 0xC0) {
+			dprintk("Fake signal strength as 50\n");
+			*signal = 0x32;
+		} else
+			*signal = 0;
+		return 0;
+	}
+
+	dprintk("gi = %d\n", gi);
+	for (i = 0; i < gi; i++) {
+
+		if ((i & 0xFF) == 0)
+			lgs8gxx_write_reg(priv, 0x84, 0x03 & (i >> 8));
+		lgs8gxx_write_reg(priv, 0x83, i & 0xFF);
+
+		lgs8gxx_read_reg(priv, 0x94, &str);
+		if (max_strength < str)
+			max_strength = str;
+	}
+
+	*signal = max_strength;
+	dprintk("%s: signal=0x%02X\n", __func__, *signal);
+
+	lgs8gxx_read_reg(priv, 0x95, &t);
+	dprintk("%s: AVG Noise=0x%02X\n", __func__, t);
+
+	return 0;
+}
+
+static int lgs8gxx_read_signal_strength(struct dvb_frontend *fe, u16 *signal)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	if (priv->config->prod == LGS8GXX_PROD_LGS8913)
+		return lgs8913_read_signal_strength(priv, signal);
+	else
+		return lgs8gxx_read_signal_agc(priv, signal);
+}
+
+static int lgs8gxx_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	u8 t;
+	*snr = 0;
+
+	lgs8gxx_read_reg(priv, 0x95, &t);
+	dprintk("AVG Noise=0x%02X\n", t);
+	*snr = 256 - t;
+	*snr <<= 8;
+	dprintk("snr=0x%x\n", *snr);
+
+	return 0;
+}
+
+static int lgs8gxx_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+	*ucblocks = 0;
+	dprintk("%s: ucblocks=0x%x\n", __func__, *ucblocks);
+	return 0;
+}
+
+static int lgs8gxx_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+	u8 r0, r1, r2, r3;
+	u32 total_cnt, err_cnt;
+
+	dprintk("%s\n", __func__);
+
+	lgs8gxx_write_reg(priv, 0xc6, 0x01);
+	lgs8gxx_write_reg(priv, 0xc6, 0x41);
+	lgs8gxx_write_reg(priv, 0xc6, 0x01);
+
+	msleep(200);
+
+	lgs8gxx_write_reg(priv, 0xc6, 0x81);
+	lgs8gxx_read_reg(priv, 0xd0, &r0);
+	lgs8gxx_read_reg(priv, 0xd1, &r1);
+	lgs8gxx_read_reg(priv, 0xd2, &r2);
+	lgs8gxx_read_reg(priv, 0xd3, &r3);
+	total_cnt = (r3 << 24) | (r2 << 16) | (r1 << 8) | (r0);
+	lgs8gxx_read_reg(priv, 0xd4, &r0);
+	lgs8gxx_read_reg(priv, 0xd5, &r1);
+	lgs8gxx_read_reg(priv, 0xd6, &r2);
+	lgs8gxx_read_reg(priv, 0xd7, &r3);
+	err_cnt = (r3 << 24) | (r2 << 16) | (r1 << 8) | (r0);
+	dprintk("error=%d total=%d\n", err_cnt, total_cnt);
+
+	if (total_cnt == 0)
+		*ber = 0;
+	else
+		*ber = err_cnt * 100 / total_cnt;
+
+	dprintk("%s: ber=0x%x\n", __func__, *ber);
+	return 0;
+}
+
+static int lgs8gxx_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+	struct lgs8gxx_state *priv = fe->demodulator_priv;
+
+	if (priv->config->tuner_address == 0)
+		return 0;
+	if (enable) {
+		u8 v = 0x80 | priv->config->tuner_address;
+		return lgs8gxx_write_reg(priv, 0x01, v);
+	}
+	return lgs8gxx_write_reg(priv, 0x01, 0);
+}
+
+static struct dvb_frontend_ops lgs8gxx_ops = {
+	.info = {
+		.name = "Legend Silicon LGS8913/LGS8GXX DMB-TH",
+		.type = FE_OFDM,
+		.frequency_min = 474000000,
+		.frequency_max = 858000000,
+		.frequency_stepsize = 10000,
+		.caps =
+			FE_CAN_FEC_AUTO |
+			FE_CAN_QAM_AUTO |
+			FE_CAN_TRANSMISSION_MODE_AUTO |
+			FE_CAN_GUARD_INTERVAL_AUTO
+	},
+
+	.release = lgs8gxx_release,
+
+	.init = lgs8gxx_init,
+	.write = lgs8gxx_write,
+	.i2c_gate_ctrl = lgs8gxx_i2c_gate_ctrl,
+
+	.set_frontend = lgs8gxx_set_fe,
+	.get_frontend = lgs8gxx_get_fe,
+	.get_tune_settings = lgs8gxx_get_tune_settings,
+
+	.read_status = lgs8gxx_read_status,
+	.read_ber = lgs8gxx_read_ber,
+	.read_signal_strength = lgs8gxx_read_signal_strength,
+	.read_snr = lgs8gxx_read_snr,
+	.read_ucblocks = lgs8gxx_read_ucblocks,
+};
+
+struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
+	struct i2c_adapter *i2c)
+{
+	struct lgs8gxx_state *priv = NULL;
+	u8 data = 0;
+
+	dprintk("%s()\n", __func__);
+
+	if (config == NULL || i2c == NULL)
+		return NULL;
+
+	priv = kzalloc(sizeof(struct lgs8gxx_state), GFP_KERNEL);
+	if (priv == NULL)
+		goto error_out;
+
+	priv->config = config;
+	priv->i2c = i2c;
+
+	/* check if the demod is there */
+	if (lgs8gxx_read_reg(priv, 0, &data) != 0) {
+		dprintk("%s lgs8gxx not found at i2c addr 0x%02X\n",
+			__func__, priv->config->demod_address);
+		goto error_out;
+	}
+
+	lgs8gxx_read_reg(priv, 1, &data);
+
+	memcpy(&priv->frontend.ops, &lgs8gxx_ops,
+	       sizeof(struct dvb_frontend_ops));
+	priv->frontend.demodulator_priv = priv;
+
+	return &priv->frontend;
+
+error_out:
+	dprintk("%s() error_out\n", __func__);
+	kfree(priv);
+	return NULL;
+
+}
+EXPORT_SYMBOL(lgs8gxx_attach);
+
+MODULE_DESCRIPTION("Legend Silicon LGS8913/LGS8GXX DMB-TH demodulator driver");
+MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/lgs8gxx.h b/drivers/media/dvb/frontends/lgs8gxx.h
new file mode 100644
index 00000000000..321d366a830
--- /dev/null
+++ b/drivers/media/dvb/frontends/lgs8gxx.h
@@ -0,0 +1,90 @@
+/*
+ *    Support for Legend Silicon DMB-TH demodulator
+ *    LGS8913, LGS8GL5
+ *    experimental support LGS8G42, LGS8G52
+ *
+ *    Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
+ *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
+ *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __LGS8GXX_H__
+#define __LGS8GXX_H__
+
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#define LGS8GXX_PROD_LGS8913 0
+#define LGS8GXX_PROD_LGS8GL5 1
+#define LGS8GXX_PROD_LGS8G42 3
+#define LGS8GXX_PROD_LGS8G52 4
+#define LGS8GXX_PROD_LGS8G54 5
+
+struct lgs8gxx_config {
+
+	/* product type */
+	u8 prod;
+
+	/* the demodulator's i2c address */
+	u8 demod_address;
+
+	/* parallel or serial transport stream */
+	u8 serial_ts;
+
+	/* transport stream polarity*/
+	u8 ts_clk_pol;
+
+	/* transport stream clock gated by ts_valid */
+	u8 ts_clk_gated;
+
+	/* A/D Clock frequency */
+	u32 if_clk_freq; /* in kHz */
+
+	/* IF frequency */
+	u32 if_freq; /* in kHz */
+
+	/*Use External ADC*/
+	u8 ext_adc;
+
+	/*External ADC output two's complement*/
+	u8 adc_signed;
+
+	/*Sample IF data at falling edge of IF_CLK*/
+	u8 if_neg_edge;
+
+	/*IF use Negative center frequency*/
+	u8 if_neg_center;
+
+	/* slave address and configuration of the tuner */
+	u8 tuner_address;
+};
+
+#if defined(CONFIG_DVB_LGS8GXX) || \
+	(defined(CONFIG_DVB_LGS8GXX_MODULE) && defined(MODULE))
+extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
+					   struct i2c_adapter *i2c);
+#else
+static inline
+struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
+				    struct i2c_adapter *i2c) {
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_LGS8GXX */
+
+#endif /* __LGS8GXX_H__ */
diff --git a/drivers/media/dvb/frontends/lgs8gxx_priv.h b/drivers/media/dvb/frontends/lgs8gxx_priv.h
new file mode 100644
index 00000000000..9776d30686d
--- /dev/null
+++ b/drivers/media/dvb/frontends/lgs8gxx_priv.h
@@ -0,0 +1,70 @@
+/*
+ *    Support for Legend Silicon DMB-TH demodulator
+ *    LGS8913, LGS8GL5
+ *    experimental support LGS8G42, LGS8G52
+ *
+ *    Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
+ *    Copyright (C) 2008 Sirius International (Hong Kong) Limited
+ *    Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef LGS8913_PRIV_H
+#define LGS8913_PRIV_H
+
+struct lgs8gxx_state {
+	struct i2c_adapter *i2c;
+	/* configuration settings */
+	const struct lgs8gxx_config *config;
+	struct dvb_frontend frontend;
+	u16 curr_gi; /* current guard interval */
+};
+
+#define SC_MASK		0x1C	/* Sub-Carrier Modulation Mask */
+#define SC_QAM64	0x10	/* 64QAM modulation */
+#define SC_QAM32	0x0C	/* 32QAM modulation */
+#define SC_QAM16	0x08	/* 16QAM modulation */
+#define SC_QAM4NR	0x04	/* 4QAM modulation */
+#define SC_QAM4		0x00	/* 4QAM modulation */
+
+#define LGS_FEC_MASK	0x03	/* FEC Rate Mask */
+#define LGS_FEC_0_4	0x00	/* FEC Rate 0.4 */
+#define LGS_FEC_0_6	0x01	/* FEC Rate 0.6 */
+#define LGS_FEC_0_8	0x02	/* FEC Rate 0.8 */
+
+#define TIM_MASK	  0x20	/* Time Interleave Length Mask */
+#define TIM_LONG	  0x00	/* Time Interleave Length = 720 */
+#define TIM_MIDDLE     0x20   /* Time Interleave Length = 240 */
+
+#define CF_MASK	0x80	/* Control Frame Mask */
+#define CF_EN	0x80	/* Control Frame On */
+
+#define GI_MASK	0x03	/* Guard Interval Mask */
+#define GI_420	0x00	/* 1/9 Guard Interval */
+#define GI_595	0x01	/* */
+#define GI_945	0x02	/* 1/4 Guard Interval */
+
+
+#define TS_PARALLEL	0x00	/* Parallel TS Output a.k.a. SPI */
+#define TS_SERIAL	0x01	/* Serial TS Output a.k.a. SSI */
+#define TS_CLK_NORMAL		0x00	/* MPEG Clock Normal */
+#define TS_CLK_INVERTED		0x02	/* MPEG Clock Inverted */
+#define TS_CLK_GATED		0x00	/* MPEG clock gated */
+#define TS_CLK_FREERUN		0x04	/* MPEG clock free running*/
+
+
+#endif