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: (213 commits)
  V4L/DVB (12720): em28xx-cards: Add vendor/product id for Kworld DVD Maker 2
  V4L/DVB (12713): em28xx: Cleanups at ir_i2c handler
  V4L/DVB (12712): em28xx: properly load ir-kbd-i2c when needed
  V4L/DVB (12701): saa7134: ir-kbd-i2c init data needs a persistent object
  V4L/DVB (12699): cx18: ir-kbd-i2c initialization data should point to a persistent object
  V4L/DVB (12698): em28xx: ir-kbd-i2c init data needs a persistent object
  V4L/DVB (12707): gspca - sn9c20x: Add SXGA support to MT9M111
  V4L/DVB (12706): gspca - sn9c20x: disable exposure/gain controls for MT9M111 sensors.
  V4L/DVB (12705): gspca - sn9c20x: Add SXGA support to SOI968
  V4L/DVB (12703): gspca - sn9c20x: Reduces size of object
  V4L/DVB (12704): gspca - sn9c20x: Fix exposure on SOI968 sensors
  V4L/DVB (12696): gspca - sonixj / sn9c102: Two drivers for 0c45:60fc and 0c45:613e.
  V4L/DVB (12695): gspca - vc032x: Do the LED work with the sensor hv7131r.
  V4L/DVB (12694): gspca - vc032x: Change the start exchanges of the sensor hv7131r.
  V4L/DVB (12693): gspca - sunplus: The brightness is signed.
  V4L/DVB (12692): gspca - sunplus: Optimize code.
  V4L/DVB (12691): gspca - sonixj: Don't use mdelay().
  V4L/DVB (12690): gspca - pac7311: Webcam 06f8:3009 added.
  V4L/DVB (12686): dvb-core: check supported QAM modulations
  V4L/DVB (12685): dvb-core: check fe->ops.set_frontend return value
  ...

13 files changed, 5156 insertions, 1898 deletions

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 3315cac875e..25a36ad60c5 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -288,16 +288,6 @@ config RADIO_TYPHOON
 	  To compile this driver as a module, choose M here: the
 	  module will be called radio-typhoon.
 
-config RADIO_TYPHOON_PROC_FS
-	bool "Support for /proc/radio-typhoon"
-	depends on PROC_FS && RADIO_TYPHOON
-	help
-	  Say Y here if you want the typhoon radio card driver to write
-	  status information (frequency, volume, muted, mute frequency,
-	  base address) to /proc/radio-typhoon. The file can be viewed with
-	  your favorite pager (i.e. use "more /proc/radio-typhoon" or "less
-	  /proc/radio-typhoon" or simply "cat /proc/radio-typhoon").
-
 config RADIO_TYPHOON_PORT
 	hex "Typhoon I/O port (0x316 or 0x336)"
 	depends on RADIO_TYPHOON=y
@@ -339,6 +329,29 @@ config RADIO_ZOLTRIX_PORT
 	help
 	  Enter the I/O port of your Zoltrix radio card.
 
+config I2C_SI4713
+	tristate "I2C driver for Silicon Labs Si4713 device"
+	depends on I2C && VIDEO_V4L2
+	---help---
+	  Say Y here if you want support to Si4713 I2C device.
+	  This device driver supports only i2c bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called si4713.
+
+config RADIO_SI4713
+	tristate "Silicon Labs Si4713 FM Radio Transmitter support"
+	depends on I2C && VIDEO_V4L2
+	select I2C_SI4713
+	---help---
+	  Say Y here if you want support to Si4713 FM Radio Transmitter.
+	  This device can transmit audio through FM. It can transmit
+	  EDS and EBDS signals as well. This module is the v4l2 radio
+	  interface for the i2c driver of this device.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called radio-si4713.
+
 config USB_DSBR
 	tristate "D-Link/GemTek USB FM radio support"
 	depends on USB && VIDEO_V4L2
@@ -351,29 +364,11 @@ config USB_DSBR
 	  To compile this driver as a module, choose M here: the
 	  module will be called dsbr100.
 
-config USB_SI470X
-	tristate "Silicon Labs Si470x FM Radio Receiver support"
-	depends on USB && VIDEO_V4L2
-	---help---
-	  This is a driver for USB devices with the Silicon Labs SI470x
-	  chip. Currently these devices are known to work:
-	  - 10c4:818a: Silicon Labs USB FM Radio Reference Design
-	  - 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music)
-	  - 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700)
-
-	  Sound is provided by the ALSA USB Audio/MIDI driver. Therefore
-	  if you don't want to use the device solely for RDS receiving,
-	  it is recommended to also select SND_USB_AUDIO.
-
-	  Please have a look at the documentation, especially on how
-	  to redirect the audio stream from the radio to your sound device:
-	  Documentation/video4linux/si470x.txt
-
-	  Say Y here if you want to connect this type of radio to your
-	  computer's USB port.
+config RADIO_SI470X
+	bool "Silicon Labs Si470x FM Radio Receiver support"
+	depends on VIDEO_V4L2
 
-	  To compile this driver as a module, choose M here: the
-	  module will be called radio-si470x.
+source "drivers/media/radio/si470x/Kconfig"
 
 config USB_MR800
 	tristate "AverMedia MR 800 USB FM radio support"
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index 0f2b35b3e56..2a1be3bf4f7 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -15,9 +15,11 @@ obj-$(CONFIG_RADIO_ZOLTRIX) += radio-zoltrix.o
 obj-$(CONFIG_RADIO_GEMTEK) += radio-gemtek.o
 obj-$(CONFIG_RADIO_GEMTEK_PCI) += radio-gemtek-pci.o
 obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
+obj-$(CONFIG_I2C_SI4713) += si4713-i2c.o
+obj-$(CONFIG_RADIO_SI4713) += radio-si4713.o
 obj-$(CONFIG_RADIO_MAESTRO) += radio-maestro.o
 obj-$(CONFIG_USB_DSBR) += dsbr100.o
-obj-$(CONFIG_USB_SI470X) += radio-si470x.o
+obj-$(CONFIG_RADIO_SI470X) += si470x/
 obj-$(CONFIG_USB_MR800) += radio-mr800.o
 obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o
 
diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c
index d30fc0ce82c..8b1440136c4 100644
--- a/drivers/media/radio/radio-cadet.c
+++ b/drivers/media/radio/radio-cadet.c
@@ -359,7 +359,8 @@ static int vidioc_querycap(struct file *file, void *priv,
 	strlcpy(v->card, "ADS Cadet", sizeof(v->card));
 	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
 	v->version = CADET_VERSION;
-	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_READWRITE;
+	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO |
+			  V4L2_CAP_READWRITE | V4L2_CAP_RDS_CAPTURE;
 	return 0;
 }
 
@@ -372,7 +373,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 	switch (v->index) {
 	case 0:
 		strlcpy(v->name, "FM", sizeof(v->name));
-		v->capability = V4L2_TUNER_CAP_STEREO;
+		v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS;
 		v->rangelow = 1400;     /* 87.5 MHz */
 		v->rangehigh = 1728;    /* 108.0 MHz */
 		v->rxsubchans = cadet_getstereo(dev);
@@ -386,6 +387,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 		default:
 			break;
 		}
+		v->rxsubchans |= V4L2_TUNER_SUB_RDS;
 		break;
 	case 1:
 		strlcpy(v->name, "AM", sizeof(v->name));
diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c
deleted file mode 100644
index e85f318b4d2..00000000000
--- a/drivers/media/radio/radio-si470x.c
+++ /dev/null
@@ -1,1863 +0,0 @@
-/*
- *  drivers/media/radio/radio-si470x.c
- *
- *  Driver for USB radios for the Silicon Labs Si470x FM Radio Receivers:
- *   - Silicon Labs USB FM Radio Reference Design
- *   - ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF)
- *   - KWorld USB FM Radio SnapMusic Mobile 700 (FM700)
- *   - Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear)
- *
- *  Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-/*
- * History:
- * 2008-01-12	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Version 1.0.0
- *		- First working version
- * 2008-01-13	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Version 1.0.1
- *		- Improved error handling, every function now returns errno
- *		- Improved multi user access (start/mute/stop)
- *		- Channel doesn't get lost anymore after start/mute/stop
- *		- RDS support added (polling mode via interrupt EP 1)
- *		- marked default module parameters with *value*
- *		- switched from bit structs to bit masks
- *		- header file cleaned and integrated
- * 2008-01-14	Tobias Lorenz <tobias.lorenz@gmx.net>
- * 		Version 1.0.2
- * 		- hex values are now lower case
- * 		- commented USB ID for ADS/Tech moved on todo list
- * 		- blacklisted si470x in hid-quirks.c
- * 		- rds buffer handling functions integrated into *_work, *_read
- * 		- rds_command in si470x_poll exchanged against simple retval
- * 		- check for firmware version 15
- * 		- code order and prototypes still remain the same
- * 		- spacing and bottom of band codes remain the same
- * 2008-01-16	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Version 1.0.3
- * 		- code reordered to avoid function prototypes
- *		- switch/case defaults are now more user-friendly
- *		- unified comment style
- *		- applied all checkpatch.pl v1.12 suggestions
- *		  except the warning about the too long lines with bit comments
- *		- renamed FMRADIO to RADIO to cut line length (checkpatch.pl)
- * 2008-01-22	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Version 1.0.4
- *		- avoid poss. locking when doing copy_to_user which may sleep
- *		- RDS is automatically activated on read now
- *		- code cleaned of unnecessary rds_commands
- *		- USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified
- *		  (thanks to Guillaume RAMOUSSE)
- * 2008-01-27	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Version 1.0.5
- *		- number of seek_retries changed to tune_timeout
- *		- fixed problem with incomplete tune operations by own buffers
- *		- optimization of variables and printf types
- *		- improved error logging
- * 2008-01-31	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Oliver Neukum <oliver@neukum.org>
- *		Version 1.0.6
- *		- fixed coverity checker warnings in *_usb_driver_disconnect
- *		- probe()/open() race by correct ordering in probe()
- *		- DMA coherency rules by separate allocation of all buffers
- *		- use of endianness macros
- *		- abuse of spinlock, replaced by mutex
- *		- racy handling of timer in disconnect,
- *		  replaced by delayed_work
- *		- racy interruptible_sleep_on(),
- *		  replaced with wait_event_interruptible()
- *		- handle signals in read()
- * 2008-02-08	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Oliver Neukum <oliver@neukum.org>
- *		Version 1.0.7
- *		- usb autosuspend support
- *		- unplugging fixed
- * 2008-05-07	Tobias Lorenz <tobias.lorenz@gmx.net>
- *		Version 1.0.8
- *		- hardware frequency seek support
- *		- afc indication
- *		- more safety checks, let si470x_get_freq return errno
- *		- vidioc behavior corrected according to v4l2 spec
- * 2008-10-20	Alexey Klimov <klimov.linux@gmail.com>
- * 		- add support for KWorld USB FM Radio FM700
- * 		- blacklisted KWorld radio in hid-core.c and hid-ids.h
- * 2008-12-03	Mark Lord <mlord@pobox.com>
- *		- add support for DealExtreme USB Radio
- * 2009-01-31	Bob Ross <pigiron@gmx.com>
- *		- correction of stereo detection/setting
- *		- correction of signal strength indicator scaling
- * 2009-01-31	Rick Bronson <rick@efn.org>
- *		Tobias Lorenz <tobias.lorenz@gmx.net>
- *		- add LED status output
- *		- get HW/SW version from scratchpad
- *
- * ToDo:
- * - add firmware download/update support
- * - RDS support: interrupt mode, instead of polling
- */
-
-
-/* driver definitions */
-#define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>"
-#define DRIVER_NAME "radio-si470x"
-#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 9)
-#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver"
-#define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers"
-#define DRIVER_VERSION "1.0.9"
-
-
-/* kernel includes */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/input.h>
-#include <linux/usb.h>
-#include <linux/hid.h>
-#include <linux/version.h>
-#include <linux/videodev2.h>
-#include <linux/mutex.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/rds.h>
-#include <asm/unaligned.h>
-
-
-/* USB Device ID List */
-static struct usb_device_id si470x_usb_driver_id_table[] = {
-	/* Silicon Labs USB FM Radio Reference Design */
-	{ USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) },
-	/* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */
-	{ USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) },
-	/* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */
-	{ USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) },
-	/* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */
-	{ USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, USB_CLASS_HID, 0, 0) },
-	/* Terminating entry */
-	{ }
-};
-MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table);
-
-
-
-/**************************************************************************
- * Module Parameters
- **************************************************************************/
-
-/* Radio Nr */
-static int radio_nr = -1;
-module_param(radio_nr, int, 0444);
-MODULE_PARM_DESC(radio_nr, "Radio Nr");
-
-/* Spacing (kHz) */
-/* 0: 200 kHz (USA, Australia) */
-/* 1: 100 kHz (Europe, Japan) */
-/* 2:  50 kHz */
-static unsigned short space = 2;
-module_param(space, ushort, 0444);
-MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*");
-
-/* Bottom of Band (MHz) */
-/* 0: 87.5 - 108 MHz (USA, Europe)*/
-/* 1: 76   - 108 MHz (Japan wide band) */
-/* 2: 76   -  90 MHz (Japan) */
-static unsigned short band = 1;
-module_param(band, ushort, 0444);
-MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz");
-
-/* De-emphasis */
-/* 0: 75 us (USA) */
-/* 1: 50 us (Europe, Australia, Japan) */
-static unsigned short de = 1;
-module_param(de, ushort, 0444);
-MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*");
-
-/* USB timeout */
-static unsigned int usb_timeout = 500;
-module_param(usb_timeout, uint, 0644);
-MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*");
-
-/* Tune timeout */
-static unsigned int tune_timeout = 3000;
-module_param(tune_timeout, uint, 0644);
-MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*");
-
-/* Seek timeout */
-static unsigned int seek_timeout = 5000;
-module_param(seek_timeout, uint, 0644);
-MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*");
-
-/* RDS buffer blocks */
-static unsigned int rds_buf = 100;
-module_param(rds_buf, uint, 0444);
-MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*");
-
-/* RDS maximum block errors */
-static unsigned short max_rds_errors = 1;
-/* 0 means   0  errors requiring correction */
-/* 1 means 1-2  errors requiring correction (used by original USBRadio.exe) */
-/* 2 means 3-5  errors requiring correction */
-/* 3 means   6+ errors or errors in checkword, correction not possible */
-module_param(max_rds_errors, ushort, 0644);
-MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*");
-
-/* RDS poll frequency */
-static unsigned int rds_poll_time = 40;
-/* 40 is used by the original USBRadio.exe */
-/* 50 is used by radio-cadet */
-/* 75 should be okay */
-/* 80 is the usual RDS receive interval */
-module_param(rds_poll_time, uint, 0644);
-MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*");
-
-
-
-/**************************************************************************
- * Register Definitions
- **************************************************************************/
-#define RADIO_REGISTER_SIZE	2	/* 16 register bit width */
-#define RADIO_REGISTER_NUM	16	/* DEVICEID   ... RDSD */
-#define RDS_REGISTER_NUM	6	/* STATUSRSSI ... RDSD */
-
-#define DEVICEID		0	/* Device ID */
-#define DEVICEID_PN		0xf000	/* bits 15..12: Part Number */
-#define DEVICEID_MFGID		0x0fff	/* bits 11..00: Manufacturer ID */
-
-#define CHIPID			1	/* Chip ID */
-#define CHIPID_REV		0xfc00	/* bits 15..10: Chip Version */
-#define CHIPID_DEV		0x0200	/* bits 09..09: Device */
-#define CHIPID_FIRMWARE		0x01ff	/* bits 08..00: Firmware Version */
-
-#define POWERCFG		2	/* Power Configuration */
-#define POWERCFG_DSMUTE		0x8000	/* bits 15..15: Softmute Disable */
-#define POWERCFG_DMUTE		0x4000	/* bits 14..14: Mute Disable */
-#define POWERCFG_MONO		0x2000	/* bits 13..13: Mono Select */
-#define POWERCFG_RDSM		0x0800	/* bits 11..11: RDS Mode (Si4701 only) */
-#define POWERCFG_SKMODE		0x0400	/* bits 10..10: Seek Mode */
-#define POWERCFG_SEEKUP		0x0200	/* bits 09..09: Seek Direction */
-#define POWERCFG_SEEK		0x0100	/* bits 08..08: Seek */
-#define POWERCFG_DISABLE	0x0040	/* bits 06..06: Powerup Disable */
-#define POWERCFG_ENABLE		0x0001	/* bits 00..00: Powerup Enable */
-
-#define CHANNEL			3	/* Channel */
-#define CHANNEL_TUNE		0x8000	/* bits 15..15: Tune */
-#define CHANNEL_CHAN		0x03ff	/* bits 09..00: Channel Select */
-
-#define SYSCONFIG1		4	/* System Configuration 1 */
-#define SYSCONFIG1_RDSIEN	0x8000	/* bits 15..15: RDS Interrupt Enable (Si4701 only) */
-#define SYSCONFIG1_STCIEN	0x4000	/* bits 14..14: Seek/Tune Complete Interrupt Enable */
-#define SYSCONFIG1_RDS		0x1000	/* bits 12..12: RDS Enable (Si4701 only) */
-#define SYSCONFIG1_DE		0x0800	/* bits 11..11: De-emphasis (0=75us 1=50us) */
-#define SYSCONFIG1_AGCD		0x0400	/* bits 10..10: AGC Disable */
-#define SYSCONFIG1_BLNDADJ	0x00c0	/* bits 07..06: Stereo/Mono Blend Level Adjustment */
-#define SYSCONFIG1_GPIO3	0x0030	/* bits 05..04: General Purpose I/O 3 */
-#define SYSCONFIG1_GPIO2	0x000c	/* bits 03..02: General Purpose I/O 2 */
-#define SYSCONFIG1_GPIO1	0x0003	/* bits 01..00: General Purpose I/O 1 */
-
-#define SYSCONFIG2		5	/* System Configuration 2 */
-#define SYSCONFIG2_SEEKTH	0xff00	/* bits 15..08: RSSI Seek Threshold */
-#define SYSCONFIG2_BAND		0x0080	/* bits 07..06: Band Select */
-#define SYSCONFIG2_SPACE	0x0030	/* bits 05..04: Channel Spacing */
-#define SYSCONFIG2_VOLUME	0x000f	/* bits 03..00: Volume */
-
-#define SYSCONFIG3		6	/* System Configuration 3 */
-#define SYSCONFIG3_SMUTER	0xc000	/* bits 15..14: Softmute Attack/Recover Rate */
-#define SYSCONFIG3_SMUTEA	0x3000	/* bits 13..12: Softmute Attenuation */
-#define SYSCONFIG3_SKSNR	0x00f0	/* bits 07..04: Seek SNR Threshold */
-#define SYSCONFIG3_SKCNT	0x000f	/* bits 03..00: Seek FM Impulse Detection Threshold */
-
-#define TEST1			7	/* Test 1 */
-#define TEST1_AHIZEN		0x4000	/* bits 14..14: Audio High-Z Enable */
-
-#define TEST2			8	/* Test 2 */
-/* TEST2 only contains reserved bits */
-
-#define BOOTCONFIG		9	/* Boot Configuration */
-/* BOOTCONFIG only contains reserved bits */
-
-#define STATUSRSSI		10	/* Status RSSI */
-#define STATUSRSSI_RDSR		0x8000	/* bits 15..15: RDS Ready (Si4701 only) */
-#define STATUSRSSI_STC		0x4000	/* bits 14..14: Seek/Tune Complete */
-#define STATUSRSSI_SF		0x2000	/* bits 13..13: Seek Fail/Band Limit */
-#define STATUSRSSI_AFCRL	0x1000	/* bits 12..12: AFC Rail */
-#define STATUSRSSI_RDSS		0x0800	/* bits 11..11: RDS Synchronized (Si4701 only) */
-#define STATUSRSSI_BLERA	0x0600	/* bits 10..09: RDS Block A Errors (Si4701 only) */
-#define STATUSRSSI_ST		0x0100	/* bits 08..08: Stereo Indicator */
-#define STATUSRSSI_RSSI		0x00ff	/* bits 07..00: RSSI (Received Signal Strength Indicator) */
-
-#define READCHAN		11	/* Read Channel */
-#define READCHAN_BLERB		0xc000	/* bits 15..14: RDS Block D Errors (Si4701 only) */
-#define READCHAN_BLERC		0x3000	/* bits 13..12: RDS Block C Errors (Si4701 only) */
-#define READCHAN_BLERD		0x0c00	/* bits 11..10: RDS Block B Errors (Si4701 only) */
-#define READCHAN_READCHAN	0x03ff	/* bits 09..00: Read Channel */
-
-#define RDSA			12	/* RDSA */
-#define RDSA_RDSA		0xffff	/* bits 15..00: RDS Block A Data (Si4701 only) */
-
-#define RDSB			13	/* RDSB */
-#define RDSB_RDSB		0xffff	/* bits 15..00: RDS Block B Data (Si4701 only) */
-
-#define RDSC			14	/* RDSC */
-#define RDSC_RDSC		0xffff	/* bits 15..00: RDS Block C Data (Si4701 only) */
-
-#define RDSD			15	/* RDSD */
-#define RDSD_RDSD		0xffff	/* bits 15..00: RDS Block D Data (Si4701 only) */
-
-
-
-/**************************************************************************
- * USB HID Reports
- **************************************************************************/
-
-/* Reports 1-16 give direct read/write access to the 16 Si470x registers */
-/* with the (REPORT_ID - 1) corresponding to the register address across USB */
-/* endpoint 0 using GET_REPORT and SET_REPORT */
-#define REGISTER_REPORT_SIZE	(RADIO_REGISTER_SIZE + 1)
-#define REGISTER_REPORT(reg)	((reg) + 1)
-
-/* Report 17 gives direct read/write access to the entire Si470x register */
-/* map across endpoint 0 using GET_REPORT and SET_REPORT */
-#define ENTIRE_REPORT_SIZE	(RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1)
-#define ENTIRE_REPORT		17
-
-/* Report 18 is used to send the lowest 6 Si470x registers up the HID */
-/* interrupt endpoint 1 to Windows every 20 milliseconds for status */
-#define RDS_REPORT_SIZE		(RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1)
-#define RDS_REPORT		18
-
-/* Report 19: LED state */
-#define LED_REPORT_SIZE		3
-#define LED_REPORT		19
-
-/* Report 19: stream */
-#define STREAM_REPORT_SIZE	3
-#define STREAM_REPORT		19
-
-/* Report 20: scratch */
-#define SCRATCH_PAGE_SIZE	63
-#define SCRATCH_REPORT_SIZE	(SCRATCH_PAGE_SIZE + 1)
-#define SCRATCH_REPORT		20
-
-/* Reports 19-22: flash upgrade of the C8051F321 */
-#define WRITE_REPORT_SIZE	4
-#define WRITE_REPORT		19
-#define FLASH_REPORT_SIZE	64
-#define FLASH_REPORT		20
-#define CRC_REPORT_SIZE		3
-#define CRC_REPORT		21
-#define RESPONSE_REPORT_SIZE	2
-#define RESPONSE_REPORT		22
-
-/* Report 23: currently unused, but can accept 60 byte reports on the HID */
-/* interrupt out endpoint 2 every 1 millisecond */
-#define UNUSED_REPORT		23
-
-
-
-/**************************************************************************
- * Software/Hardware Versions
- **************************************************************************/
-#define RADIO_SW_VERSION_NOT_BOOTLOADABLE	6
-#define RADIO_SW_VERSION			7
-#define RADIO_SW_VERSION_CURRENT		15
-#define RADIO_HW_VERSION			1
-
-#define SCRATCH_PAGE_SW_VERSION	1
-#define SCRATCH_PAGE_HW_VERSION	2
-
-
-
-/**************************************************************************
- * LED State Definitions
- **************************************************************************/
-#define LED_COMMAND		0x35
-
-#define NO_CHANGE_LED		0x00
-#define ALL_COLOR_LED		0x01	/* streaming state */
-#define BLINK_GREEN_LED		0x02	/* connect state */
-#define BLINK_RED_LED		0x04
-#define BLINK_ORANGE_LED	0x10	/* disconnect state */
-#define SOLID_GREEN_LED		0x20	/* tuning/seeking state */
-#define SOLID_RED_LED		0x40	/* bootload state */
-#define SOLID_ORANGE_LED	0x80
-
-
-
-/**************************************************************************
- * Stream State Definitions
- **************************************************************************/
-#define STREAM_COMMAND	0x36
-#define STREAM_VIDPID	0x00
-#define STREAM_AUDIO	0xff
-
-
-
-/**************************************************************************
- * Bootloader / Flash Commands
- **************************************************************************/
-
-/* unique id sent to bootloader and required to put into a bootload state */
-#define UNIQUE_BL_ID		0x34
-
-/* mask for the flash data */
-#define FLASH_DATA_MASK		0x55
-
-/* bootloader commands */
-#define GET_SW_VERSION_COMMAND	0x00
-#define SET_PAGE_COMMAND	0x01
-#define ERASE_PAGE_COMMAND	0x02
-#define WRITE_PAGE_COMMAND	0x03
-#define CRC_ON_PAGE_COMMAND	0x04
-#define READ_FLASH_BYTE_COMMAND	0x05
-#define RESET_DEVICE_COMMAND	0x06
-#define GET_HW_VERSION_COMMAND	0x07
-#define BLANK			0xff
-
-/* bootloader command responses */
-#define COMMAND_OK		0x01
-#define COMMAND_FAILED		0x02
-#define COMMAND_PENDING		0x03
-
-
-
-/**************************************************************************
- * General Driver Definitions
- **************************************************************************/
-
-/*
- * si470x_device - private data
- */
-struct si470x_device {
-	/* reference to USB and video device */
-	struct usb_device *usbdev;
-	struct usb_interface *intf;
-	struct video_device *videodev;
-
-	/* driver management */
-	unsigned int users;
-	unsigned char disconnected;
-	struct mutex disconnect_lock;
-
-	/* Silabs internal registers (0..15) */
-	unsigned short registers[RADIO_REGISTER_NUM];
-
-	/* RDS receive buffer */
-	struct delayed_work work;
-	wait_queue_head_t read_queue;
-	struct mutex lock;		/* buffer locking */
-	unsigned char *buffer;		/* size is always multiple of three */
-	unsigned int buf_size;
-	unsigned int rd_index;
-	unsigned int wr_index;
-
-	/* scratch page */
-	unsigned char software_version;
-	unsigned char hardware_version;
-};
-
-
-/*
- * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW,
- * 62.5 kHz otherwise.
- * The tuner is able to have a channel spacing of 50, 100 or 200 kHz.
- * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW
- * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000
- */
-#define FREQ_MUL (1000000 / 62.5)
-
-
-
-/**************************************************************************
- * General Driver Functions - REGISTER_REPORTs
- **************************************************************************/
-
-/*
- * si470x_get_report - receive a HID report
- */
-static int si470x_get_report(struct si470x_device *radio, void *buf, int size)
-{
-	unsigned char *report = (unsigned char *) buf;
-	int retval;
-
-	retval = usb_control_msg(radio->usbdev,
-		usb_rcvctrlpipe(radio->usbdev, 0),
-		HID_REQ_GET_REPORT,
-		USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
-		report[0], 2,
-		buf, size, usb_timeout);
-
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": si470x_get_report: usb_control_msg returned %d\n",
-			retval);
-	return retval;
-}
-
-
-/*
- * si470x_set_report - send a HID report
- */
-static int si470x_set_report(struct si470x_device *radio, void *buf, int size)
-{
-	unsigned char *report = (unsigned char *) buf;
-	int retval;
-
-	retval = usb_control_msg(radio->usbdev,
-		usb_sndctrlpipe(radio->usbdev, 0),
-		HID_REQ_SET_REPORT,
-		USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
-		report[0], 2,
-		buf, size, usb_timeout);
-
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": si470x_set_report: usb_control_msg returned %d\n",
-			retval);
-	return retval;
-}
-
-
-/*
- * si470x_get_register - read register
- */
-static int si470x_get_register(struct si470x_device *radio, int regnr)
-{
-	unsigned char buf[REGISTER_REPORT_SIZE];
-	int retval;
-
-	buf[0] = REGISTER_REPORT(regnr);
-
-	retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
-
-	if (retval >= 0)
-		radio->registers[regnr] = get_unaligned_be16(&buf[1]);
-
-	return (retval < 0) ? -EINVAL : 0;
-}
-
-
-/*
- * si470x_set_register - write register
- */
-static int si470x_set_register(struct si470x_device *radio, int regnr)
-{
-	unsigned char buf[REGISTER_REPORT_SIZE];
-	int retval;
-
-	buf[0] = REGISTER_REPORT(regnr);
-	put_unaligned_be16(radio->registers[regnr], &buf[1]);
-
-	retval = si470x_set_report(radio, (void *) &buf, sizeof(buf));
-
-	return (retval < 0) ? -EINVAL : 0;
-}
-
-
-/*
- * si470x_set_chan - set the channel
- */
-static int si470x_set_chan(struct si470x_device *radio, unsigned short chan)
-{
-	int retval;
-	unsigned long timeout;
-	bool timed_out = 0;
-
-	/* start tuning */
-	radio->registers[CHANNEL] &= ~CHANNEL_CHAN;
-	radio->registers[CHANNEL] |= CHANNEL_TUNE | chan;
-	retval = si470x_set_register(radio, CHANNEL);
-	if (retval < 0)
-		goto done;
-
-	/* wait till tune operation has completed */
-	timeout = jiffies + msecs_to_jiffies(tune_timeout);
-	do {
-		retval = si470x_get_register(radio, STATUSRSSI);
-		if (retval < 0)
-			goto stop;
-		timed_out = time_after(jiffies, timeout);
-	} while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) &&
-		(!timed_out));
-	if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0)
-		printk(KERN_WARNING DRIVER_NAME ": tune does not complete\n");
-	if (timed_out)
-		printk(KERN_WARNING DRIVER_NAME
-			": tune timed out after %u ms\n", tune_timeout);
-
-stop:
-	/* stop tuning */
-	radio->registers[CHANNEL] &= ~CHANNEL_TUNE;
-	retval = si470x_set_register(radio, CHANNEL);
-
-done:
-	return retval;
-}
-
-
-/*
- * si470x_get_freq - get the frequency
- */
-static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq)
-{
-	unsigned int spacing, band_bottom;
-	unsigned short chan;
-	int retval;
-
-	/* Spacing (kHz) */
-	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
-	/* 0: 200 kHz (USA, Australia) */
-	case 0:
-		spacing = 0.200 * FREQ_MUL; break;
-	/* 1: 100 kHz (Europe, Japan) */
-	case 1:
-		spacing = 0.100 * FREQ_MUL; break;
-	/* 2:  50 kHz */
-	default:
-		spacing = 0.050 * FREQ_MUL; break;
-	};
-
-	/* Bottom of Band (MHz) */
-	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
-	/* 0: 87.5 - 108 MHz (USA, Europe) */
-	case 0:
-		band_bottom = 87.5 * FREQ_MUL; break;
-	/* 1: 76   - 108 MHz (Japan wide band) */
-	default:
-		band_bottom = 76   * FREQ_MUL; break;
-	/* 2: 76   -  90 MHz (Japan) */
-	case 2:
-		band_bottom = 76   * FREQ_MUL; break;
-	};
-
-	/* read channel */
-	retval = si470x_get_register(radio, READCHAN);
-	chan = radio->registers[READCHAN] & READCHAN_READCHAN;
-
-	/* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */
-	*freq = chan * spacing + band_bottom;
-
-	return retval;
-}
-
-
-/*
- * si470x_set_freq - set the frequency
- */
-static int si470x_set_freq(struct si470x_device *radio, unsigned int freq)
-{
-	unsigned int spacing, band_bottom;
-	unsigned short chan;
-
-	/* Spacing (kHz) */
-	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
-	/* 0: 200 kHz (USA, Australia) */
-	case 0:
-		spacing = 0.200 * FREQ_MUL; break;
-	/* 1: 100 kHz (Europe, Japan) */
-	case 1:
-		spacing = 0.100 * FREQ_MUL; break;
-	/* 2:  50 kHz */
-	default:
-		spacing = 0.050 * FREQ_MUL; break;
-	};
-
-	/* Bottom of Band (MHz) */
-	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
-	/* 0: 87.5 - 108 MHz (USA, Europe) */
-	case 0:
-		band_bottom = 87.5 * FREQ_MUL; break;
-	/* 1: 76   - 108 MHz (Japan wide band) */
-	default:
-		band_bottom = 76   * FREQ_MUL; break;
-	/* 2: 76   -  90 MHz (Japan) */
-	case 2:
-		band_bottom = 76   * FREQ_MUL; break;
-	};
-
-	/* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */
-	chan = (freq - band_bottom) / spacing;
-
-	return si470x_set_chan(radio, chan);
-}
-
-
-/*
- * si470x_set_seek - set seek
- */
-static int si470x_set_seek(struct si470x_device *radio,
-		unsigned int wrap_around, unsigned int seek_upward)
-{
-	int retval = 0;
-	unsigned long timeout;
-	bool timed_out = 0;
-
-	/* start seeking */
-	radio->registers[POWERCFG] |= POWERCFG_SEEK;
-	if (wrap_around == 1)
-		radio->registers[POWERCFG] &= ~POWERCFG_SKMODE;
-	else
-		radio->registers[POWERCFG] |= POWERCFG_SKMODE;
-	if (seek_upward == 1)
-		radio->registers[POWERCFG] |= POWERCFG_SEEKUP;
-	else
-		radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP;
-	retval = si470x_set_register(radio, POWERCFG);
-	if (retval < 0)
-		goto done;
-
-	/* wait till seek operation has completed */
-	timeout = jiffies + msecs_to_jiffies(seek_timeout);
-	do {
-		retval = si470x_get_register(radio, STATUSRSSI);
-		if (retval < 0)
-			goto stop;
-		timed_out = time_after(jiffies, timeout);
-	} while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) &&
-		(!timed_out));
-	if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0)
-		printk(KERN_WARNING DRIVER_NAME ": seek does not complete\n");
-	if (radio->registers[STATUSRSSI] & STATUSRSSI_SF)
-		printk(KERN_WARNING DRIVER_NAME
-			": seek failed / band limit reached\n");
-	if (timed_out)
-		printk(KERN_WARNING DRIVER_NAME
-			": seek timed out after %u ms\n", seek_timeout);
-
-stop:
-	/* stop seeking */
-	radio->registers[POWERCFG] &= ~POWERCFG_SEEK;
-	retval = si470x_set_register(radio, POWERCFG);
-
-done:
-	/* try again, if timed out */
-	if ((retval == 0) && timed_out)
-		retval = -EAGAIN;
-
-	return retval;
-}
-
-
-/*
- * si470x_start - switch on radio
- */
-static int si470x_start(struct si470x_device *radio)
-{
-	int retval;
-
-	/* powercfg */
-	radio->registers[POWERCFG] =
-		POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM;
-	retval = si470x_set_register(radio, POWERCFG);
-	if (retval < 0)
-		goto done;
-
-	/* sysconfig 1 */
-	radio->registers[SYSCONFIG1] = SYSCONFIG1_DE;
-	retval = si470x_set_register(radio, SYSCONFIG1);
-	if (retval < 0)
-		goto done;
-
-	/* sysconfig 2 */
-	radio->registers[SYSCONFIG2] =
-		(0x3f  << 8) |				/* SEEKTH */
-		((band  << 6) & SYSCONFIG2_BAND)  |	/* BAND */
-		((space << 4) & SYSCONFIG2_SPACE) |	/* SPACE */
-		15;					/* VOLUME (max) */
-	retval = si470x_set_register(radio, SYSCONFIG2);
-	if (retval < 0)
-		goto done;
-
-	/* reset last channel */
-	retval = si470x_set_chan(radio,
-		radio->registers[CHANNEL] & CHANNEL_CHAN);
-
-done:
-	return retval;
-}
-
-
-/*
- * si470x_stop - switch off radio
- */
-static int si470x_stop(struct si470x_device *radio)
-{
-	int retval;
-
-	/* sysconfig 1 */
-	radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS;
-	retval = si470x_set_register(radio, SYSCONFIG1);
-	if (retval < 0)
-		goto done;
-
-	/* powercfg */
-	radio->registers[POWERCFG] &= ~POWERCFG_DMUTE;
-	/* POWERCFG_ENABLE has to automatically go low */
-	radio->registers[POWERCFG] |= POWERCFG_ENABLE |	POWERCFG_DISABLE;
-	retval = si470x_set_register(radio, POWERCFG);
-
-done:
-	return retval;
-}
-
-
-/*
- * si470x_rds_on - switch on rds reception
- */
-static int si470x_rds_on(struct si470x_device *radio)
-{
-	int retval;
-
-	/* sysconfig 1 */
-	mutex_lock(&radio->lock);
-	radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS;
-	retval = si470x_set_register(radio, SYSCONFIG1);
-	if (retval < 0)
-		radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS;
-	mutex_unlock(&radio->lock);
-
-	return retval;
-}
-
-
-
-/**************************************************************************
- * General Driver Functions - ENTIRE_REPORT
- **************************************************************************/
-
-/*
- * si470x_get_all_registers - read entire registers
- */
-static int si470x_get_all_registers(struct si470x_device *radio)
-{
-	unsigned char buf[ENTIRE_REPORT_SIZE];
-	int retval;
-	unsigned char regnr;
-
-	buf[0] = ENTIRE_REPORT;
-
-	retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
-
-	if (retval >= 0)
-		for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++)
-			radio->registers[regnr] = get_unaligned_be16(
-				&buf[regnr * RADIO_REGISTER_SIZE + 1]);
-
-	return (retval < 0) ? -EINVAL : 0;
-}
-
-
-
-/**************************************************************************
- * General Driver Functions - RDS_REPORT
- **************************************************************************/
-
-/*
- * si470x_get_rds_registers - read rds registers
- */
-static int si470x_get_rds_registers(struct si470x_device *radio)
-{
-	unsigned char buf[RDS_REPORT_SIZE];
-	int retval;
-	int size;
-	unsigned char regnr;
-
-	buf[0] = RDS_REPORT;
-
-	retval = usb_interrupt_msg(radio->usbdev,
-		usb_rcvintpipe(radio->usbdev, 1),
-		(void *) &buf, sizeof(buf), &size, usb_timeout);
-	if (size != sizeof(buf))
-		printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: "
-			"return size differs: %d != %zu\n", size, sizeof(buf));
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: "
-			"usb_interrupt_msg returned %d\n", retval);
-
-	if (retval >= 0)
-		for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++)
-			radio->registers[STATUSRSSI + regnr] =
-				get_unaligned_be16(
-				&buf[regnr * RADIO_REGISTER_SIZE + 1]);
-
-	return (retval < 0) ? -EINVAL : 0;
-}
-
-
-
-/**************************************************************************
- * General Driver Functions - LED_REPORT
- **************************************************************************/
-
-/*
- * si470x_set_led_state - sets the led state
- */
-static int si470x_set_led_state(struct si470x_device *radio,
-		unsigned char led_state)
-{
-	unsigned char buf[LED_REPORT_SIZE];
-	int retval;
-
-	buf[0] = LED_REPORT;
-	buf[1] = LED_COMMAND;
-	buf[2] = led_state;
-
-	retval = si470x_set_report(radio, (void *) &buf, sizeof(buf));
-
-	return (retval < 0) ? -EINVAL : 0;
-}
-
-
-
-/**************************************************************************
- * General Driver Functions - SCRATCH_REPORT
- **************************************************************************/
-
-/*
- * si470x_get_scratch_versions - gets the scratch page and version infos
- */
-static int si470x_get_scratch_page_versions(struct si470x_device *radio)
-{
-	unsigned char buf[SCRATCH_REPORT_SIZE];
-	int retval;
-
-	buf[0] = SCRATCH_REPORT;
-
-	retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
-
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME ": si470x_get_scratch: "
-			"si470x_get_report returned %d\n", retval);
-	else {
-		radio->software_version = buf[1];
-		radio->hardware_version = buf[2];
-	}
-
-	return (retval < 0) ? -EINVAL : 0;
-}
-
-
-
-/**************************************************************************
- * RDS Driver Functions
- **************************************************************************/
-
-/*
- * si470x_rds - rds processing function
- */
-static void si470x_rds(struct si470x_device *radio)
-{
-	unsigned char blocknum;
-	unsigned short bler; /* rds block errors */
-	unsigned short rds;
-	unsigned char tmpbuf[3];
-
-	/* get rds blocks */
-	if (si470x_get_rds_registers(radio) < 0)
-		return;
-	if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) {
-		/* No RDS group ready */
-		return;
-	}
-	if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) {
-		/* RDS decoder not synchronized */
-		return;
-	}
-
-	/* copy all four RDS blocks to internal buffer */
-	mutex_lock(&radio->lock);
-	for (blocknum = 0; blocknum < 4; blocknum++) {
-		switch (blocknum) {
-		default:
-			bler = (radio->registers[STATUSRSSI] &
-					STATUSRSSI_BLERA) >> 9;
-			rds = radio->registers[RDSA];
-			break;
-		case 1:
-			bler = (radio->registers[READCHAN] &
-					READCHAN_BLERB) >> 14;
-			rds = radio->registers[RDSB];
-			break;
-		case 2:
-			bler = (radio->registers[READCHAN] &
-					READCHAN_BLERC) >> 12;
-			rds = radio->registers[RDSC];
-			break;
-		case 3:
-			bler = (radio->registers[READCHAN] &
-					READCHAN_BLERD) >> 10;
-			rds = radio->registers[RDSD];
-			break;
-		};
-
-		/* Fill the V4L2 RDS buffer */
-		put_unaligned_le16(rds, &tmpbuf);
-		tmpbuf[2] = blocknum;		/* offset name */
-		tmpbuf[2] |= blocknum << 3;	/* received offset */
-		if (bler > max_rds_errors)
-			tmpbuf[2] |= 0x80; /* uncorrectable errors */
-		else if (bler > 0)
-			tmpbuf[2] |= 0x40; /* corrected error(s) */
-
-		/* copy RDS block to internal buffer */
-		memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3);
-		radio->wr_index += 3;
-
-		/* wrap write pointer */
-		if (radio->wr_index >= radio->buf_size)
-			radio->wr_index = 0;
-
-		/* check for overflow */
-		if (radio->wr_index == radio->rd_index) {
-			/* increment and wrap read pointer */
-			radio->rd_index += 3;
-			if (radio->rd_index >= radio->buf_size)
-				radio->rd_index = 0;
-		}
-	}
-	mutex_unlock(&radio->lock);
-
-	/* wake up read queue */
-	if (radio->wr_index != radio->rd_index)
-		wake_up_interruptible(&radio->read_queue);
-}
-
-
-/*
- * si470x_work - rds work function
- */
-static void si470x_work(struct work_struct *work)
-{
-	struct si470x_device *radio = container_of(work, struct si470x_device,
-		work.work);
-
-	/* safety checks */
-	if (radio->disconnected)
-		return;
-	if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
-		return;
-
-	si470x_rds(radio);
-	schedule_delayed_work(&radio->work, msecs_to_jiffies(rds_poll_time));
-}
-
-
-
-/**************************************************************************
- * File Operations Interface
- **************************************************************************/
-
-/*
- * si470x_fops_read - read RDS data
- */
-static ssize_t si470x_fops_read(struct file *file, char __user *buf,
-		size_t count, loff_t *ppos)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-	unsigned int block_count = 0;
-
-	/* switch on rds reception */
-	if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) {
-		si470x_rds_on(radio);
-		schedule_delayed_work(&radio->work,
-			msecs_to_jiffies(rds_poll_time));
-	}
-
-	/* block if no new data available */
-	while (radio->wr_index == radio->rd_index) {
-		if (file->f_flags & O_NONBLOCK) {
-			retval = -EWOULDBLOCK;
-			goto done;
-		}
-		if (wait_event_interruptible(radio->read_queue,
-			radio->wr_index != radio->rd_index) < 0) {
-			retval = -EINTR;
-			goto done;
-		}
-	}
-
-	/* calculate block count from byte count */
-	count /= 3;
-
-	/* copy RDS block out of internal buffer and to user buffer */
-	mutex_lock(&radio->lock);
-	while (block_count < count) {
-		if (radio->rd_index == radio->wr_index)
-			break;
-
-		/* always transfer rds complete blocks */
-		if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3))
-			/* retval = -EFAULT; */
-			break;
-
-		/* increment and wrap read pointer */
-		radio->rd_index += 3;
-		if (radio->rd_index >= radio->buf_size)
-			radio->rd_index = 0;
-
-		/* increment counters */
-		block_count++;
-		buf += 3;
-		retval += 3;
-	}
-	mutex_unlock(&radio->lock);
-
-done:
-	return retval;
-}
-
-
-/*
- * si470x_fops_poll - poll RDS data
- */
-static unsigned int si470x_fops_poll(struct file *file,
-		struct poll_table_struct *pts)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* switch on rds reception */
-	if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) {
-		si470x_rds_on(radio);
-		schedule_delayed_work(&radio->work,
-			msecs_to_jiffies(rds_poll_time));
-	}
-
-	poll_wait(file, &radio->read_queue, pts);
-
-	if (radio->rd_index != radio->wr_index)
-		retval = POLLIN | POLLRDNORM;
-
-	return retval;
-}
-
-
-/*
- * si470x_fops_open - file open
- */
-static int si470x_fops_open(struct file *file)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval;
-
-	lock_kernel();
-	radio->users++;
-
-	retval = usb_autopm_get_interface(radio->intf);
-	if (retval < 0) {
-		radio->users--;
-		retval = -EIO;
-		goto done;
-	}
-
-	if (radio->users == 1) {
-		/* start radio */
-		retval = si470x_start(radio);
-		if (retval < 0)
-			usb_autopm_put_interface(radio->intf);
-	}
-
-done:
-	unlock_kernel();
-	return retval;
-}
-
-
-/*
- * si470x_fops_release - file release
- */
-static int si470x_fops_release(struct file *file)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety check */
-	if (!radio) {
-		retval = -ENODEV;
-		goto done;
-	}
-
-	mutex_lock(&radio->disconnect_lock);
-	radio->users--;
-	if (radio->users == 0) {
-		if (radio->disconnected) {
-			video_unregister_device(radio->videodev);
-			kfree(radio->buffer);
-			kfree(radio);
-			goto unlock;
-		}
-
-		/* stop rds reception */
-		cancel_delayed_work_sync(&radio->work);
-
-		/* cancel read processes */
-		wake_up_interruptible(&radio->read_queue);
-
-		/* stop radio */
-		retval = si470x_stop(radio);
-		usb_autopm_put_interface(radio->intf);
-	}
-unlock:
-	mutex_unlock(&radio->disconnect_lock);
-done:
-	return retval;
-}
-
-
-/*
- * si470x_fops - file operations interface
- */
-static const struct v4l2_file_operations si470x_fops = {
-	.owner		= THIS_MODULE,
-	.read		= si470x_fops_read,
-	.poll		= si470x_fops_poll,
-	.ioctl		= video_ioctl2,
-	.open		= si470x_fops_open,
-	.release	= si470x_fops_release,
-};
-
-
-
-/**************************************************************************
- * Video4Linux Interface
- **************************************************************************/
-
-/*
- * si470x_v4l2_queryctrl - query control
- */
-static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = {
-	{
-		.id		= V4L2_CID_AUDIO_VOLUME,
-		.type		= V4L2_CTRL_TYPE_INTEGER,
-		.name		= "Volume",
-		.minimum	= 0,
-		.maximum	= 15,
-		.step		= 1,
-		.default_value	= 15,
-	},
-	{
-		.id		= V4L2_CID_AUDIO_MUTE,
-		.type		= V4L2_CTRL_TYPE_BOOLEAN,
-		.name		= "Mute",
-		.minimum	= 0,
-		.maximum	= 1,
-		.step		= 1,
-		.default_value	= 1,
-	},
-};
-
-
-/*
- * si470x_vidioc_querycap - query device capabilities
- */
-static int si470x_vidioc_querycap(struct file *file, void *priv,
-		struct v4l2_capability *capability)
-{
-	struct si470x_device *radio = video_drvdata(file);
-
-	strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver));
-	strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
-	usb_make_path(radio->usbdev, capability->bus_info, sizeof(capability->bus_info));
-	capability->version = DRIVER_KERNEL_VERSION;
-	capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
-		V4L2_CAP_TUNER | V4L2_CAP_RADIO;
-
-	return 0;
-}
-
-
-/*
- * si470x_vidioc_queryctrl - enumerate control items
- */
-static int si470x_vidioc_queryctrl(struct file *file, void *priv,
-		struct v4l2_queryctrl *qc)
-{
-	unsigned char i = 0;
-	int retval = -EINVAL;
-
-	/* abort if qc->id is below V4L2_CID_BASE */
-	if (qc->id < V4L2_CID_BASE)
-		goto done;
-
-	/* search video control */
-	for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) {
-		if (qc->id == si470x_v4l2_queryctrl[i].id) {
-			memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc));
-			retval = 0; /* found */
-			break;
-		}
-	}
-
-	/* disable unsupported base controls */
-	/* to satisfy kradio and such apps */
-	if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) {
-		qc->flags = V4L2_CTRL_FLAG_DISABLED;
-		retval = 0;
-	}
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": query controls failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_g_ctrl - get the value of a control
- */
-static int si470x_vidioc_g_ctrl(struct file *file, void *priv,
-		struct v4l2_control *ctrl)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-
-	switch (ctrl->id) {
-	case V4L2_CID_AUDIO_VOLUME:
-		ctrl->value = radio->registers[SYSCONFIG2] &
-				SYSCONFIG2_VOLUME;
-		break;
-	case V4L2_CID_AUDIO_MUTE:
-		ctrl->value = ((radio->registers[POWERCFG] &
-				POWERCFG_DMUTE) == 0) ? 1 : 0;
-		break;
-	default:
-		retval = -EINVAL;
-	}
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": get control failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_s_ctrl - set the value of a control
- */
-static int si470x_vidioc_s_ctrl(struct file *file, void *priv,
-		struct v4l2_control *ctrl)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-
-	switch (ctrl->id) {
-	case V4L2_CID_AUDIO_VOLUME:
-		radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME;
-		radio->registers[SYSCONFIG2] |= ctrl->value;
-		retval = si470x_set_register(radio, SYSCONFIG2);
-		break;
-	case V4L2_CID_AUDIO_MUTE:
-		if (ctrl->value == 1)
-			radio->registers[POWERCFG] &= ~POWERCFG_DMUTE;
-		else
-			radio->registers[POWERCFG] |= POWERCFG_DMUTE;
-		retval = si470x_set_register(radio, POWERCFG);
-		break;
-	default:
-		retval = -EINVAL;
-	}
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": set control failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_g_audio - get audio attributes
- */
-static int si470x_vidioc_g_audio(struct file *file, void *priv,
-		struct v4l2_audio *audio)
-{
-	/* driver constants */
-	audio->index = 0;
-	strcpy(audio->name, "Radio");
-	audio->capability = V4L2_AUDCAP_STEREO;
-	audio->mode = 0;
-
-	return 0;
-}
-
-
-/*
- * si470x_vidioc_g_tuner - get tuner attributes
- */
-static int si470x_vidioc_g_tuner(struct file *file, void *priv,
-		struct v4l2_tuner *tuner)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-	if (tuner->index != 0) {
-		retval = -EINVAL;
-		goto done;
-	}
-
-	retval = si470x_get_register(radio, STATUSRSSI);
-	if (retval < 0)
-		goto done;
-
-	/* driver constants */
-	strcpy(tuner->name, "FM");
-	tuner->type = V4L2_TUNER_RADIO;
-	tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
-
-	/* range limits */
-	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
-	/* 0: 87.5 - 108 MHz (USA, Europe, default) */
-	default:
-		tuner->rangelow  =  87.5 * FREQ_MUL;
-		tuner->rangehigh = 108   * FREQ_MUL;
-		break;
-	/* 1: 76   - 108 MHz (Japan wide band) */
-	case 1 :
-		tuner->rangelow  =  76   * FREQ_MUL;
-		tuner->rangehigh = 108   * FREQ_MUL;
-		break;
-	/* 2: 76   -  90 MHz (Japan) */
-	case 2 :
-		tuner->rangelow  =  76   * FREQ_MUL;
-		tuner->rangehigh =  90   * FREQ_MUL;
-		break;
-	};
-
-	/* stereo indicator == stereo (instead of mono) */
-	if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0)
-		tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
-	else
-		tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
-
-	/* mono/stereo selector */
-	if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0)
-		tuner->audmode = V4L2_TUNER_MODE_STEREO;
-	else
-		tuner->audmode = V4L2_TUNER_MODE_MONO;
-
-	/* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */
-	/* measured in units of dbµV in 1 db increments (max at ~75 dbµV) */
-	tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI);
-	/* the ideal factor is 0xffff/75 = 873,8 */
-	tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10);
-
-	/* automatic frequency control: -1: freq to low, 1 freq to high */
-	/* AFCRL does only indicate that freq. differs, not if too low/high */
-	tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0;
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": get tuner failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_s_tuner - set tuner attributes
- */
-static int si470x_vidioc_s_tuner(struct file *file, void *priv,
-		struct v4l2_tuner *tuner)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = -EINVAL;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-	if (tuner->index != 0)
-		goto done;
-
-	/* mono/stereo selector */
-	switch (tuner->audmode) {
-	case V4L2_TUNER_MODE_MONO:
-		radio->registers[POWERCFG] |= POWERCFG_MONO;  /* force mono */
-		break;
-	case V4L2_TUNER_MODE_STEREO:
-		radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */
-		break;
-	default:
-		goto done;
-	}
-
-	retval = si470x_set_register(radio, POWERCFG);
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": set tuner failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_g_frequency - get tuner or modulator radio frequency
- */
-static int si470x_vidioc_g_frequency(struct file *file, void *priv,
-		struct v4l2_frequency *freq)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-	if (freq->tuner != 0) {
-		retval = -EINVAL;
-		goto done;
-	}
-
-	freq->type = V4L2_TUNER_RADIO;
-	retval = si470x_get_freq(radio, &freq->frequency);
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": get frequency failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_s_frequency - set tuner or modulator radio frequency
- */
-static int si470x_vidioc_s_frequency(struct file *file, void *priv,
-		struct v4l2_frequency *freq)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-	if (freq->tuner != 0) {
-		retval = -EINVAL;
-		goto done;
-	}
-
-	retval = si470x_set_freq(radio, freq->frequency);
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": set frequency failed with %d\n", retval);
-	return retval;
-}
-
-
-/*
- * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek
- */
-static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv,
-		struct v4l2_hw_freq_seek *seek)
-{
-	struct si470x_device *radio = video_drvdata(file);
-	int retval = 0;
-
-	/* safety checks */
-	if (radio->disconnected) {
-		retval = -EIO;
-		goto done;
-	}
-	if (seek->tuner != 0) {
-		retval = -EINVAL;
-		goto done;
-	}
-
-	retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward);
-
-done:
-	if (retval < 0)
-		printk(KERN_WARNING DRIVER_NAME
-			": set hardware frequency seek failed with %d\n",
-			retval);
-	return retval;
-}
-
-
-/*
- * si470x_ioctl_ops - video device ioctl operations
- */
-static const struct v4l2_ioctl_ops si470x_ioctl_ops = {
-	.vidioc_querycap	= si470x_vidioc_querycap,
-	.vidioc_queryctrl	= si470x_vidioc_queryctrl,
-	.vidioc_g_ctrl		= si470x_vidioc_g_ctrl,
-	.vidioc_s_ctrl		= si470x_vidioc_s_ctrl,
-	.vidioc_g_audio		= si470x_vidioc_g_audio,
-	.vidioc_g_tuner		= si470x_vidioc_g_tuner,
-	.vidioc_s_tuner		= si470x_vidioc_s_tuner,
-	.vidioc_g_frequency	= si470x_vidioc_g_frequency,
-	.vidioc_s_frequency	= si470x_vidioc_s_frequency,
-	.vidioc_s_hw_freq_seek	= si470x_vidioc_s_hw_freq_seek,
-};
-
-
-/*
- * si470x_viddev_template - video device interface
- */
-static struct video_device si470x_viddev_template = {
-	.fops			= &si470x_fops,
-	.name			= DRIVER_NAME,
-	.release		= video_device_release,
-	.ioctl_ops		= &si470x_ioctl_ops,
-};
-
-
-
-/**************************************************************************
- * USB Interface
- **************************************************************************/
-
-/*
- * si470x_usb_driver_probe - probe for the device
- */
-static int si470x_usb_driver_probe(struct usb_interface *intf,
-		const struct usb_device_id *id)
-{
-	struct si470x_device *radio;
-	int retval = 0;
-
-	/* private data allocation and initialization */
-	radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL);
-	if (!radio) {
-		retval = -ENOMEM;
-		goto err_initial;
-	}
-	radio->users = 0;
-	radio->disconnected = 0;
-	radio->usbdev = interface_to_usbdev(intf);
-	radio->intf = intf;
-	mutex_init(&radio->disconnect_lock);
-	mutex_init(&radio->lock);
-
-	/* video device allocation and initialization */
-	radio->videodev = video_device_alloc();
-	if (!radio->videodev) {
-		retval = -ENOMEM;
-		goto err_radio;
-	}
-	memcpy(radio->videodev, &si470x_viddev_template,
-			sizeof(si470x_viddev_template));
-	video_set_drvdata(radio->videodev, radio);
-
-	/* show some infos about the specific si470x device */
-	if (si470x_get_all_registers(radio) < 0) {
-		retval = -EIO;
-		goto err_video;
-	}
-	printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4hx ChipID=0x%4.4hx\n",
-			radio->registers[DEVICEID], radio->registers[CHIPID]);
-
-	/* get software and hardware versions */
-	if (si470x_get_scratch_page_versions(radio) < 0) {
-		retval = -EIO;
-		goto err_video;
-	}
-	printk(KERN_INFO DRIVER_NAME
-			": software version %d, hardware version %d\n",
-			radio->software_version, radio->hardware_version);
-
-	/* check if device and firmware is current */
-	if ((radio->registers[CHIPID] & CHIPID_FIRMWARE)
-			< RADIO_SW_VERSION_CURRENT) {
-		printk(KERN_WARNING DRIVER_NAME
-			": This driver is known to work with "
-			"firmware version %hu,\n", RADIO_SW_VERSION_CURRENT);
-		printk(KERN_WARNING DRIVER_NAME
-			": but the device has firmware version %hu.\n",
-			radio->registers[CHIPID] & CHIPID_FIRMWARE);
-		printk(KERN_WARNING DRIVER_NAME
-			": If you have some trouble using this driver,\n");
-		printk(KERN_WARNING DRIVER_NAME
-			": please report to V4L ML at "
-			"linux-media@vger.kernel.org\n");
-	}
-
-	/* set initial frequency */
-	si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */
-
-	/* set led to connect state */
-	si470x_set_led_state(radio, BLINK_GREEN_LED);
-
-	/* rds buffer allocation */
-	radio->buf_size = rds_buf * 3;
-	radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
-	if (!radio->buffer) {
-		retval = -EIO;
-		goto err_video;
-	}
-
-	/* rds buffer configuration */
-	radio->wr_index = 0;
-	radio->rd_index = 0;
-	init_waitqueue_head(&radio->read_queue);
-
-	/* prepare rds work function */
-	INIT_DELAYED_WORK(&radio->work, si470x_work);
-
-	/* register video device */
-	retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr);
-	if (retval) {
-		printk(KERN_WARNING DRIVER_NAME
-				": Could not register video device\n");
-		goto err_all;
-	}
-	usb_set_intfdata(intf, radio);
-
-	return 0;
-err_all:
-	kfree(radio->buffer);
-err_video:
-	video_device_release(radio->videodev);
-err_radio:
-	kfree(radio);
-err_initial:
-	return retval;
-}
-
-
-/*
- * si470x_usb_driver_suspend - suspend the device
- */
-static int si470x_usb_driver_suspend(struct usb_interface *intf,
-		pm_message_t message)
-{
-	struct si470x_device *radio = usb_get_intfdata(intf);
-
-	printk(KERN_INFO DRIVER_NAME ": suspending now...\n");
-
-	cancel_delayed_work_sync(&radio->work);
-
-	return 0;
-}
-
-
-/*
- * si470x_usb_driver_resume - resume the device
- */
-static int si470x_usb_driver_resume(struct usb_interface *intf)
-{
-	struct si470x_device *radio = usb_get_intfdata(intf);
-
-	printk(KERN_INFO DRIVER_NAME ": resuming now...\n");
-
-	mutex_lock(&radio->lock);
-	if (radio->users && radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS)
-		schedule_delayed_work(&radio->work,
-			msecs_to_jiffies(rds_poll_time));
-	mutex_unlock(&radio->lock);
-
-	return 0;
-}
-
-
-/*
- * si470x_usb_driver_disconnect - disconnect the device
- */
-static void si470x_usb_driver_disconnect(struct usb_interface *intf)
-{
-	struct si470x_device *radio = usb_get_intfdata(intf);
-
-	mutex_lock(&radio->disconnect_lock);
-	radio->disconnected = 1;
-	cancel_delayed_work_sync(&radio->work);
-	usb_set_intfdata(intf, NULL);
-	if (radio->users == 0) {
-		/* set led to disconnect state */
-		si470x_set_led_state(radio, BLINK_ORANGE_LED);
-
-		video_unregister_device(radio->videodev);
-		kfree(radio->buffer);
-		kfree(radio);
-	}
-	mutex_unlock(&radio->disconnect_lock);
-}
-
-
-/*
- * si470x_usb_driver - usb driver interface
- */
-static struct usb_driver si470x_usb_driver = {
-	.name			= DRIVER_NAME,
-	.probe			= si470x_usb_driver_probe,
-	.disconnect		= si470x_usb_driver_disconnect,
-	.suspend		= si470x_usb_driver_suspend,
-	.resume			= si470x_usb_driver_resume,
-	.id_table		= si470x_usb_driver_id_table,
-	.supports_autosuspend	= 1,
-};
-
-
-
-/**************************************************************************
- * Module Interface
- **************************************************************************/
-
-/*
- * si470x_module_init - module init
- */
-static int __init si470x_module_init(void)
-{
-	printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n");
-	return usb_register(&si470x_usb_driver);
-}
-
-
-/*
- * si470x_module_exit - module exit
- */
-static void __exit si470x_module_exit(void)
-{
-	usb_deregister(&si470x_usb_driver);
-}
-
-
-module_init(si470x_module_init);
-module_exit(si470x_module_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c
new file mode 100644
index 00000000000..65c14b70458
--- /dev/null
+++ b/drivers/media/radio/radio-si4713.c
@@ -0,0 +1,367 @@
+/*
+ * drivers/media/radio/radio-si4713.c
+ *
+ * Platform Driver for Silicon Labs Si4713 FM Radio Transmitter:
+ *
+ * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT
+ * Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/version.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/radio-si4713.h>
+
+/* module parameters */
+static int radio_nr = -1;	/* radio device minor (-1 ==> auto assign) */
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr,
+		 "Minor number for radio device (-1 ==> auto assign)");
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>");
+MODULE_DESCRIPTION("Platform driver for Si4713 FM Radio Transmitter");
+MODULE_VERSION("0.0.1");
+
+/* Driver state struct */
+struct radio_si4713_device {
+	struct v4l2_device		v4l2_dev;
+	struct video_device		*radio_dev;
+};
+
+/* radio_si4713_fops - file operations interface */
+static const struct v4l2_file_operations radio_si4713_fops = {
+	.owner		= THIS_MODULE,
+	.ioctl		= video_ioctl2,
+};
+
+/* Video4Linux Interface */
+static int radio_si4713_fill_audout(struct v4l2_audioout *vao)
+{
+	/* TODO: check presence of audio output */
+	strlcpy(vao->name, "FM Modulator Audio Out", 32);
+
+	return 0;
+}
+
+static int radio_si4713_enumaudout(struct file *file, void *priv,
+						struct v4l2_audioout *vao)
+{
+	return radio_si4713_fill_audout(vao);
+}
+
+static int radio_si4713_g_audout(struct file *file, void *priv,
+					struct v4l2_audioout *vao)
+{
+	int rval = radio_si4713_fill_audout(vao);
+
+	vao->index = 0;
+
+	return rval;
+}
+
+static int radio_si4713_s_audout(struct file *file, void *priv,
+					struct v4l2_audioout *vao)
+{
+	return vao->index ? -EINVAL : 0;
+}
+
+/* radio_si4713_querycap - query device capabilities */
+static int radio_si4713_querycap(struct file *file, void *priv,
+					struct v4l2_capability *capability)
+{
+	struct radio_si4713_device *rsdev;
+
+	rsdev = video_get_drvdata(video_devdata(file));
+
+	strlcpy(capability->driver, "radio-si4713", sizeof(capability->driver));
+	strlcpy(capability->card, "Silicon Labs Si4713 Modulator",
+				sizeof(capability->card));
+	capability->capabilities = V4L2_CAP_MODULATOR | V4L2_CAP_RDS_OUTPUT;
+
+	return 0;
+}
+
+/* radio_si4713_queryctrl - enumerate control items */
+static int radio_si4713_queryctrl(struct file *file, void *priv,
+						struct v4l2_queryctrl *qc)
+{
+	/* Must be sorted from low to high control ID! */
+	static const u32 user_ctrls[] = {
+		V4L2_CID_USER_CLASS,
+		V4L2_CID_AUDIO_MUTE,
+		0
+	};
+
+	/* Must be sorted from low to high control ID! */
+	static const u32 fmtx_ctrls[] = {
+		V4L2_CID_FM_TX_CLASS,
+		V4L2_CID_RDS_TX_DEVIATION,
+		V4L2_CID_RDS_TX_PI,
+		V4L2_CID_RDS_TX_PTY,
+		V4L2_CID_RDS_TX_PS_NAME,
+		V4L2_CID_RDS_TX_RADIO_TEXT,
+		V4L2_CID_AUDIO_LIMITER_ENABLED,
+		V4L2_CID_AUDIO_LIMITER_RELEASE_TIME,
+		V4L2_CID_AUDIO_LIMITER_DEVIATION,
+		V4L2_CID_AUDIO_COMPRESSION_ENABLED,
+		V4L2_CID_AUDIO_COMPRESSION_GAIN,
+		V4L2_CID_AUDIO_COMPRESSION_THRESHOLD,
+		V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME,
+		V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME,
+		V4L2_CID_PILOT_TONE_ENABLED,
+		V4L2_CID_PILOT_TONE_DEVIATION,
+		V4L2_CID_PILOT_TONE_FREQUENCY,
+		V4L2_CID_TUNE_PREEMPHASIS,
+		V4L2_CID_TUNE_POWER_LEVEL,
+		V4L2_CID_TUNE_ANTENNA_CAPACITOR,
+		0
+	};
+	static const u32 *ctrl_classes[] = {
+		user_ctrls,
+		fmtx_ctrls,
+		NULL
+	};
+	struct radio_si4713_device *rsdev;
+
+	rsdev = video_get_drvdata(video_devdata(file));
+
+	qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
+	if (qc->id == 0)
+		return -EINVAL;
+
+	if (qc->id == V4L2_CID_USER_CLASS || qc->id == V4L2_CID_FM_TX_CLASS)
+		return v4l2_ctrl_query_fill(qc, 0, 0, 0, 0);
+
+	return v4l2_device_call_until_err(&rsdev->v4l2_dev, 0, core,
+						queryctrl, qc);
+}
+
+/*
+ * v4l2 ioctl call backs.
+ * we are just a wrapper for v4l2_sub_devs.
+ */
+static inline struct v4l2_device *get_v4l2_dev(struct file *file)
+{
+	return &((struct radio_si4713_device *)video_drvdata(file))->v4l2_dev;
+}
+
+static int radio_si4713_g_ext_ctrls(struct file *file, void *p,
+						struct v4l2_ext_controls *vecs)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
+							g_ext_ctrls, vecs);
+}
+
+static int radio_si4713_s_ext_ctrls(struct file *file, void *p,
+						struct v4l2_ext_controls *vecs)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
+							s_ext_ctrls, vecs);
+}
+
+static int radio_si4713_g_ctrl(struct file *file, void *p,
+						struct v4l2_control *vc)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
+							g_ctrl, vc);
+}
+
+static int radio_si4713_s_ctrl(struct file *file, void *p,
+						struct v4l2_control *vc)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
+							s_ctrl, vc);
+}
+
+static int radio_si4713_g_modulator(struct file *file, void *p,
+						struct v4l2_modulator *vm)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner,
+							g_modulator, vm);
+}
+
+static int radio_si4713_s_modulator(struct file *file, void *p,
+						struct v4l2_modulator *vm)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner,
+							s_modulator, vm);
+}
+
+static int radio_si4713_g_frequency(struct file *file, void *p,
+						struct v4l2_frequency *vf)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner,
+							g_frequency, vf);
+}
+
+static int radio_si4713_s_frequency(struct file *file, void *p,
+						struct v4l2_frequency *vf)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner,
+							s_frequency, vf);
+}
+
+static long radio_si4713_default(struct file *file, void *p, int cmd, void *arg)
+{
+	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
+							ioctl, cmd, arg);
+}
+
+static struct v4l2_ioctl_ops radio_si4713_ioctl_ops = {
+	.vidioc_enumaudout	= radio_si4713_enumaudout,
+	.vidioc_g_audout	= radio_si4713_g_audout,
+	.vidioc_s_audout	= radio_si4713_s_audout,
+	.vidioc_querycap	= radio_si4713_querycap,
+	.vidioc_queryctrl	= radio_si4713_queryctrl,
+	.vidioc_g_ext_ctrls	= radio_si4713_g_ext_ctrls,
+	.vidioc_s_ext_ctrls	= radio_si4713_s_ext_ctrls,
+	.vidioc_g_ctrl		= radio_si4713_g_ctrl,
+	.vidioc_s_ctrl		= radio_si4713_s_ctrl,
+	.vidioc_g_modulator	= radio_si4713_g_modulator,
+	.vidioc_s_modulator	= radio_si4713_s_modulator,
+	.vidioc_g_frequency	= radio_si4713_g_frequency,
+	.vidioc_s_frequency	= radio_si4713_s_frequency,
+	.vidioc_default		= radio_si4713_default,
+};
+
+/* radio_si4713_vdev_template - video device interface */
+static struct video_device radio_si4713_vdev_template = {
+	.fops			= &radio_si4713_fops,
+	.name			= "radio-si4713",
+	.release		= video_device_release,
+	.ioctl_ops		= &radio_si4713_ioctl_ops,
+};
+
+/* Platform driver interface */
+/* radio_si4713_pdriver_probe - probe for the device */
+static int radio_si4713_pdriver_probe(struct platform_device *pdev)
+{
+	struct radio_si4713_platform_data *pdata = pdev->dev.platform_data;
+	struct radio_si4713_device *rsdev;
+	struct i2c_adapter *adapter;
+	struct v4l2_subdev *sd;
+	int rval = 0;
+
+	if (!pdata) {
+		dev_err(&pdev->dev, "Cannot proceed without platform data.\n");
+		rval = -EINVAL;
+		goto exit;
+	}
+
+	rsdev = kzalloc(sizeof *rsdev, GFP_KERNEL);
+	if (!rsdev) {
+		dev_err(&pdev->dev, "Failed to alloc video device.\n");
+		rval = -ENOMEM;
+		goto exit;
+	}
+
+	rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev);
+	if (rval) {
+		dev_err(&pdev->dev, "Failed to register v4l2 device.\n");
+		goto free_rsdev;
+	}
+
+	adapter = i2c_get_adapter(pdata->i2c_bus);
+	if (!adapter) {
+		dev_err(&pdev->dev, "Cannot get i2c adapter %d\n",
+							pdata->i2c_bus);
+		rval = -ENODEV;
+		goto unregister_v4l2_dev;
+	}
+
+	sd = v4l2_i2c_new_subdev_board(&rsdev->v4l2_dev, adapter, "si4713_i2c",
+					pdata->subdev_board_info, NULL);
+	if (!sd) {
+		dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n");
+		rval = -ENODEV;
+		goto unregister_v4l2_dev;
+	}
+
+	rsdev->radio_dev = video_device_alloc();
+	if (!rsdev->radio_dev) {
+		dev_err(&pdev->dev, "Failed to alloc video device.\n");
+		rval = -ENOMEM;
+		goto unregister_v4l2_dev;
+	}
+
+	memcpy(rsdev->radio_dev, &radio_si4713_vdev_template,
+			sizeof(radio_si4713_vdev_template));
+	video_set_drvdata(rsdev->radio_dev, rsdev);
+	if (video_register_device(rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) {
+		dev_err(&pdev->dev, "Could not register video device.\n");
+		rval = -EIO;
+		goto free_vdev;
+	}
+	dev_info(&pdev->dev, "New device successfully probed\n");
+
+	goto exit;
+
+free_vdev:
+	video_device_release(rsdev->radio_dev);
+unregister_v4l2_dev:
+	v4l2_device_unregister(&rsdev->v4l2_dev);
+free_rsdev:
+	kfree(rsdev);
+exit:
+	return rval;
+}
+
+/* radio_si4713_pdriver_remove - remove the device */
+static int __exit radio_si4713_pdriver_remove(struct platform_device *pdev)
+{
+	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
+	struct radio_si4713_device *rsdev = container_of(v4l2_dev,
+						struct radio_si4713_device,
+						v4l2_dev);
+
+	video_unregister_device(rsdev->radio_dev);
+	v4l2_device_unregister(&rsdev->v4l2_dev);
+	kfree(rsdev);
+
+	return 0;
+}
+
+static struct platform_driver radio_si4713_pdriver = {
+	.driver		= {
+		.name	= "radio-si4713",
+	},
+	.probe		= radio_si4713_pdriver_probe,
+	.remove         = __exit_p(radio_si4713_pdriver_remove),
+};
+
+/* Module Interface */
+static int __init radio_si4713_module_init(void)
+{
+	return platform_driver_register(&radio_si4713_pdriver);
+}
+
+static void __exit radio_si4713_module_exit(void)
+{
+	platform_driver_unregister(&radio_si4713_pdriver);
+}
+
+module_init(radio_si4713_module_init);
+module_exit(radio_si4713_module_exit);
+
diff --git a/drivers/media/radio/si470x/Kconfig b/drivers/media/radio/si470x/Kconfig
new file mode 100644
index 00000000000..a466654ee5c
--- /dev/null
+++ b/drivers/media/radio/si470x/Kconfig
@@ -0,0 +1,37 @@
+config USB_SI470X
+	tristate "Silicon Labs Si470x FM Radio Receiver support with USB"
+	depends on USB && RADIO_SI470X
+	---help---
+	  This is a driver for USB devices with the Silicon Labs SI470x
+	  chip. Currently these devices are known to work:
+	  - 10c4:818a: Silicon Labs USB FM Radio Reference Design
+	  - 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music)
+	  - 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700)
+	  - 10c5:819a: Sanei Electric FM USB Radio (aka DealExtreme.com PCear)
+
+	  Sound is provided by the ALSA USB Audio/MIDI driver. Therefore
+	  if you don't want to use the device solely for RDS receiving,
+	  it is recommended to also select SND_USB_AUDIO.
+
+	  Please have a look at the documentation, especially on how
+	  to redirect the audio stream from the radio to your sound device:
+	  Documentation/video4linux/si470x.txt
+
+	  Say Y here if you want to connect this type of radio to your
+	  computer's USB port.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called radio-usb-si470x.
+
+config I2C_SI470X
+	tristate "Silicon Labs Si470x FM Radio Receiver support with I2C"
+	depends on I2C && RADIO_SI470X && !USB_SI470X
+	---help---
+	  This is a driver for I2C devices with the Silicon Labs SI470x
+	  chip.
+
+	  Say Y here if you want to connect this type of radio to your
+	  computer's I2C port.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called radio-i2c-si470x.
diff --git a/drivers/media/radio/si470x/Makefile b/drivers/media/radio/si470x/Makefile
new file mode 100644
index 00000000000..06964816cfd
--- /dev/null
+++ b/drivers/media/radio/si470x/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for radios with Silicon Labs Si470x FM Radio Receivers
+#
+
+radio-usb-si470x-objs	:= radio-si470x-usb.o radio-si470x-common.o
+radio-i2c-si470x-objs	:= radio-si470x-i2c.o radio-si470x-common.o
+
+obj-$(CONFIG_USB_SI470X) += radio-usb-si470x.o
+obj-$(CONFIG_I2C_SI470X) += radio-i2c-si470x.o
diff --git a/drivers/media/radio/si470x/radio-si470x-common.c b/drivers/media/radio/si470x/radio-si470x-common.c
new file mode 100644
index 00000000000..f33315f2c54
--- /dev/null
+++ b/drivers/media/radio/si470x/radio-si470x-common.c
@@ -0,0 +1,798 @@
+/*
+ *  drivers/media/radio/si470x/radio-si470x-common.c
+ *
+ *  Driver for radios with Silicon Labs Si470x FM Radio Receivers
+ *
+ *  Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/*
+ * History:
+ * 2008-01-12	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Version 1.0.0
+ *		- First working version
+ * 2008-01-13	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Version 1.0.1
+ *		- Improved error handling, every function now returns errno
+ *		- Improved multi user access (start/mute/stop)
+ *		- Channel doesn't get lost anymore after start/mute/stop
+ *		- RDS support added (polling mode via interrupt EP 1)
+ *		- marked default module parameters with *value*
+ *		- switched from bit structs to bit masks
+ *		- header file cleaned and integrated
+ * 2008-01-14	Tobias Lorenz <tobias.lorenz@gmx.net>
+ * 		Version 1.0.2
+ * 		- hex values are now lower case
+ * 		- commented USB ID for ADS/Tech moved on todo list
+ * 		- blacklisted si470x in hid-quirks.c
+ * 		- rds buffer handling functions integrated into *_work, *_read
+ * 		- rds_command in si470x_poll exchanged against simple retval
+ * 		- check for firmware version 15
+ * 		- code order and prototypes still remain the same
+ * 		- spacing and bottom of band codes remain the same
+ * 2008-01-16	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Version 1.0.3
+ * 		- code reordered to avoid function prototypes
+ *		- switch/case defaults are now more user-friendly
+ *		- unified comment style
+ *		- applied all checkpatch.pl v1.12 suggestions
+ *		  except the warning about the too long lines with bit comments
+ *		- renamed FMRADIO to RADIO to cut line length (checkpatch.pl)
+ * 2008-01-22	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Version 1.0.4
+ *		- avoid poss. locking when doing copy_to_user which may sleep
+ *		- RDS is automatically activated on read now
+ *		- code cleaned of unnecessary rds_commands
+ *		- USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified
+ *		  (thanks to Guillaume RAMOUSSE)
+ * 2008-01-27	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Version 1.0.5
+ *		- number of seek_retries changed to tune_timeout
+ *		- fixed problem with incomplete tune operations by own buffers
+ *		- optimization of variables and printf types
+ *		- improved error logging
+ * 2008-01-31	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Oliver Neukum <oliver@neukum.org>
+ *		Version 1.0.6
+ *		- fixed coverity checker warnings in *_usb_driver_disconnect
+ *		- probe()/open() race by correct ordering in probe()
+ *		- DMA coherency rules by separate allocation of all buffers
+ *		- use of endianness macros
+ *		- abuse of spinlock, replaced by mutex
+ *		- racy handling of timer in disconnect,
+ *		  replaced by delayed_work
+ *		- racy interruptible_sleep_on(),
+ *		  replaced with wait_event_interruptible()
+ *		- handle signals in read()
+ * 2008-02-08	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Oliver Neukum <oliver@neukum.org>
+ *		Version 1.0.7
+ *		- usb autosuspend support
+ *		- unplugging fixed
+ * 2008-05-07	Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		Version 1.0.8
+ *		- hardware frequency seek support
+ *		- afc indication
+ *		- more safety checks, let si470x_get_freq return errno
+ *		- vidioc behavior corrected according to v4l2 spec
+ * 2008-10-20	Alexey Klimov <klimov.linux@gmail.com>
+ * 		- add support for KWorld USB FM Radio FM700
+ * 		- blacklisted KWorld radio in hid-core.c and hid-ids.h
+ * 2008-12-03	Mark Lord <mlord@pobox.com>
+ *		- add support for DealExtreme USB Radio
+ * 2009-01-31	Bob Ross <pigiron@gmx.com>
+ *		- correction of stereo detection/setting
+ *		- correction of signal strength indicator scaling
+ * 2009-01-31	Rick Bronson <rick@efn.org>
+ *		Tobias Lorenz <tobias.lorenz@gmx.net>
+ *		- add LED status output
+ *		- get HW/SW version from scratchpad
+ * 2009-06-16   Edouard Lafargue <edouard@lafargue.name>
+ *		Version 1.0.10
+ *		- add support for interrupt mode for RDS endpoint,
+ *                instead of polling.
+ *                Improves RDS reception significantly
+ */
+
+
+/* kernel includes */
+#include "radio-si470x.h"
+
+
+
+/**************************************************************************
+ * Module Parameters
+ **************************************************************************/
+
+/* Spacing (kHz) */
+/* 0: 200 kHz (USA, Australia) */
+/* 1: 100 kHz (Europe, Japan) */
+/* 2:  50 kHz */
+static unsigned short space = 2;
+module_param(space, ushort, 0444);
+MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*");
+
+/* Bottom of Band (MHz) */
+/* 0: 87.5 - 108 MHz (USA, Europe)*/
+/* 1: 76   - 108 MHz (Japan wide band) */
+/* 2: 76   -  90 MHz (Japan) */
+static unsigned short band = 1;
+module_param(band, ushort, 0444);
+MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz");
+
+/* De-emphasis */
+/* 0: 75 us (USA) */
+/* 1: 50 us (Europe, Australia, Japan) */
+static unsigned short de = 1;
+module_param(de, ushort, 0444);
+MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*");
+
+/* Tune timeout */
+static unsigned int tune_timeout = 3000;
+module_param(tune_timeout, uint, 0644);
+MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*");
+
+/* Seek timeout */
+static unsigned int seek_timeout = 5000;
+module_param(seek_timeout, uint, 0644);
+MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*");
+
+
+
+/**************************************************************************
+ * Generic Functions
+ **************************************************************************/
+
+/*
+ * si470x_set_chan - set the channel
+ */
+static int si470x_set_chan(struct si470x_device *radio, unsigned short chan)
+{
+	int retval;
+	unsigned long timeout;
+	bool timed_out = 0;
+
+	/* start tuning */
+	radio->registers[CHANNEL] &= ~CHANNEL_CHAN;
+	radio->registers[CHANNEL] |= CHANNEL_TUNE | chan;
+	retval = si470x_set_register(radio, CHANNEL);
+	if (retval < 0)
+		goto done;
+
+	/* wait till tune operation has completed */
+	timeout = jiffies + msecs_to_jiffies(tune_timeout);
+	do {
+		retval = si470x_get_register(radio, STATUSRSSI);
+		if (retval < 0)
+			goto stop;
+		timed_out = time_after(jiffies, timeout);
+	} while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) &&
+		(!timed_out));
+	if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0)
+		dev_warn(&radio->videodev->dev, "tune does not complete\n");
+	if (timed_out)
+		dev_warn(&radio->videodev->dev,
+			"tune timed out after %u ms\n", tune_timeout);
+
+stop:
+	/* stop tuning */
+	radio->registers[CHANNEL] &= ~CHANNEL_TUNE;
+	retval = si470x_set_register(radio, CHANNEL);
+
+done:
+	return retval;
+}
+
+
+/*
+ * si470x_get_freq - get the frequency
+ */
+static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq)
+{
+	unsigned int spacing, band_bottom;
+	unsigned short chan;
+	int retval;
+
+	/* Spacing (kHz) */
+	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
+	/* 0: 200 kHz (USA, Australia) */
+	case 0:
+		spacing = 0.200 * FREQ_MUL; break;
+	/* 1: 100 kHz (Europe, Japan) */
+	case 1:
+		spacing = 0.100 * FREQ_MUL; break;
+	/* 2:  50 kHz */
+	default:
+		spacing = 0.050 * FREQ_MUL; break;
+	};
+
+	/* Bottom of Band (MHz) */
+	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
+	/* 0: 87.5 - 108 MHz (USA, Europe) */
+	case 0:
+		band_bottom = 87.5 * FREQ_MUL; break;
+	/* 1: 76   - 108 MHz (Japan wide band) */
+	default:
+		band_bottom = 76   * FREQ_MUL; break;
+	/* 2: 76   -  90 MHz (Japan) */
+	case 2:
+		band_bottom = 76   * FREQ_MUL; break;
+	};
+
+	/* read channel */
+	retval = si470x_get_register(radio, READCHAN);
+	chan = radio->registers[READCHAN] & READCHAN_READCHAN;
+
+	/* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */
+	*freq = chan * spacing + band_bottom;
+
+	return retval;
+}
+
+
+/*
+ * si470x_set_freq - set the frequency
+ */
+int si470x_set_freq(struct si470x_device *radio, unsigned int freq)
+{
+	unsigned int spacing, band_bottom;
+	unsigned short chan;
+
+	/* Spacing (kHz) */
+	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
+	/* 0: 200 kHz (USA, Australia) */
+	case 0:
+		spacing = 0.200 * FREQ_MUL; break;
+	/* 1: 100 kHz (Europe, Japan) */
+	case 1:
+		spacing = 0.100 * FREQ_MUL; break;
+	/* 2:  50 kHz */
+	default:
+		spacing = 0.050 * FREQ_MUL; break;
+	};
+
+	/* Bottom of Band (MHz) */
+	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
+	/* 0: 87.5 - 108 MHz (USA, Europe) */
+	case 0:
+		band_bottom = 87.5 * FREQ_MUL; break;
+	/* 1: 76   - 108 MHz (Japan wide band) */
+	default:
+		band_bottom = 76   * FREQ_MUL; break;
+	/* 2: 76   -  90 MHz (Japan) */
+	case 2:
+		band_bottom = 76   * FREQ_MUL; break;
+	};
+
+	/* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */
+	chan = (freq - band_bottom) / spacing;
+
+	return si470x_set_chan(radio, chan);
+}
+
+
+/*
+ * si470x_set_seek - set seek
+ */
+static int si470x_set_seek(struct si470x_device *radio,
+		unsigned int wrap_around, unsigned int seek_upward)
+{
+	int retval = 0;
+	unsigned long timeout;
+	bool timed_out = 0;
+
+	/* start seeking */
+	radio->registers[POWERCFG] |= POWERCFG_SEEK;
+	if (wrap_around == 1)
+		radio->registers[POWERCFG] &= ~POWERCFG_SKMODE;
+	else
+		radio->registers[POWERCFG] |= POWERCFG_SKMODE;
+	if (seek_upward == 1)
+		radio->registers[POWERCFG] |= POWERCFG_SEEKUP;
+	else
+		radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP;
+	retval = si470x_set_register(radio, POWERCFG);
+	if (retval < 0)
+		goto done;
+
+	/* wait till seek operation has completed */
+	timeout = jiffies + msecs_to_jiffies(seek_timeout);
+	do {
+		retval = si470x_get_register(radio, STATUSRSSI);
+		if (retval < 0)
+			goto stop;
+		timed_out = time_after(jiffies, timeout);
+	} while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) &&
+		(!timed_out));
+	if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0)
+		dev_warn(&radio->videodev->dev, "seek does not complete\n");
+	if (radio->registers[STATUSRSSI] & STATUSRSSI_SF)
+		dev_warn(&radio->videodev->dev,
+			"seek failed / band limit reached\n");
+	if (timed_out)
+		dev_warn(&radio->videodev->dev,
+			"seek timed out after %u ms\n", seek_timeout);
+
+stop:
+	/* stop seeking */
+	radio->registers[POWERCFG] &= ~POWERCFG_SEEK;
+	retval = si470x_set_register(radio, POWERCFG);
+
+done:
+	/* try again, if timed out */
+	if ((retval == 0) && timed_out)
+		retval = -EAGAIN;
+
+	return retval;
+}
+
+
+/*
+ * si470x_start - switch on radio
+ */
+int si470x_start(struct si470x_device *radio)
+{
+	int retval;
+
+	/* powercfg */
+	radio->registers[POWERCFG] =
+		POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM;
+	retval = si470x_set_register(radio, POWERCFG);
+	if (retval < 0)
+		goto done;
+
+	/* sysconfig 1 */
+	radio->registers[SYSCONFIG1] = SYSCONFIG1_DE;
+	retval = si470x_set_register(radio, SYSCONFIG1);
+	if (retval < 0)
+		goto done;
+
+	/* sysconfig 2 */
+	radio->registers[SYSCONFIG2] =
+		(0x3f  << 8) |				/* SEEKTH */
+		((band  << 6) & SYSCONFIG2_BAND)  |	/* BAND */
+		((space << 4) & SYSCONFIG2_SPACE) |	/* SPACE */
+		15;					/* VOLUME (max) */
+	retval = si470x_set_register(radio, SYSCONFIG2);
+	if (retval < 0)
+		goto done;
+
+	/* reset last channel */
+	retval = si470x_set_chan(radio,
+		radio->registers[CHANNEL] & CHANNEL_CHAN);
+
+done:
+	return retval;
+}
+
+
+/*
+ * si470x_stop - switch off radio
+ */
+int si470x_stop(struct si470x_device *radio)
+{
+	int retval;
+
+	/* sysconfig 1 */
+	radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS;
+	retval = si470x_set_register(radio, SYSCONFIG1);
+	if (retval < 0)
+		goto done;
+
+	/* powercfg */
+	radio->registers[POWERCFG] &= ~POWERCFG_DMUTE;
+	/* POWERCFG_ENABLE has to automatically go low */
+	radio->registers[POWERCFG] |= POWERCFG_ENABLE |	POWERCFG_DISABLE;
+	retval = si470x_set_register(radio, POWERCFG);
+
+done:
+	return retval;
+}
+
+
+/*
+ * si470x_rds_on - switch on rds reception
+ */
+int si470x_rds_on(struct si470x_device *radio)
+{
+	int retval;
+
+	/* sysconfig 1 */
+	mutex_lock(&radio->lock);
+	radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS;
+	retval = si470x_set_register(radio, SYSCONFIG1);
+	if (retval < 0)
+		radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS;
+	mutex_unlock(&radio->lock);
+
+	return retval;
+}
+
+
+
+/**************************************************************************
+ * Video4Linux Interface
+ **************************************************************************/
+
+/*
+ * si470x_vidioc_queryctrl - enumerate control items
+ */
+static int si470x_vidioc_queryctrl(struct file *file, void *priv,
+		struct v4l2_queryctrl *qc)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = -EINVAL;
+
+	/* abort if qc->id is below V4L2_CID_BASE */
+	if (qc->id < V4L2_CID_BASE)
+		goto done;
+
+	/* search video control */
+	switch (qc->id) {
+	case V4L2_CID_AUDIO_VOLUME:
+		return v4l2_ctrl_query_fill(qc, 0, 15, 1, 15);
+	case V4L2_CID_AUDIO_MUTE:
+		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+	}
+
+	/* disable unsupported base controls */
+	/* to satisfy kradio and such apps */
+	if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) {
+		qc->flags = V4L2_CTRL_FLAG_DISABLED;
+		retval = 0;
+	}
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"query controls failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_g_ctrl - get the value of a control
+ */
+static int si470x_vidioc_g_ctrl(struct file *file, void *priv,
+		struct v4l2_control *ctrl)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_VOLUME:
+		ctrl->value = radio->registers[SYSCONFIG2] &
+				SYSCONFIG2_VOLUME;
+		break;
+	case V4L2_CID_AUDIO_MUTE:
+		ctrl->value = ((radio->registers[POWERCFG] &
+				POWERCFG_DMUTE) == 0) ? 1 : 0;
+		break;
+	default:
+		retval = -EINVAL;
+	}
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"get control failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_s_ctrl - set the value of a control
+ */
+static int si470x_vidioc_s_ctrl(struct file *file, void *priv,
+		struct v4l2_control *ctrl)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_VOLUME:
+		radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME;
+		radio->registers[SYSCONFIG2] |= ctrl->value;
+		retval = si470x_set_register(radio, SYSCONFIG2);
+		break;
+	case V4L2_CID_AUDIO_MUTE:
+		if (ctrl->value == 1)
+			radio->registers[POWERCFG] &= ~POWERCFG_DMUTE;
+		else
+			radio->registers[POWERCFG] |= POWERCFG_DMUTE;
+		retval = si470x_set_register(radio, POWERCFG);
+		break;
+	default:
+		retval = -EINVAL;
+	}
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"set control failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_g_audio - get audio attributes
+ */
+static int si470x_vidioc_g_audio(struct file *file, void *priv,
+		struct v4l2_audio *audio)
+{
+	/* driver constants */
+	audio->index = 0;
+	strcpy(audio->name, "Radio");
+	audio->capability = V4L2_AUDCAP_STEREO;
+	audio->mode = 0;
+
+	return 0;
+}
+
+
+/*
+ * si470x_vidioc_g_tuner - get tuner attributes
+ */
+static int si470x_vidioc_g_tuner(struct file *file, void *priv,
+		struct v4l2_tuner *tuner)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	if (tuner->index != 0) {
+		retval = -EINVAL;
+		goto done;
+	}
+
+	retval = si470x_get_register(radio, STATUSRSSI);
+	if (retval < 0)
+		goto done;
+
+	/* driver constants */
+	strcpy(tuner->name, "FM");
+	tuner->type = V4L2_TUNER_RADIO;
+#if defined(CONFIG_USB_SI470X) || defined(CONFIG_USB_SI470X_MODULE)
+	tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
+			    V4L2_TUNER_CAP_RDS;
+#else
+	tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+#endif
+
+	/* range limits */
+	switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
+	/* 0: 87.5 - 108 MHz (USA, Europe, default) */
+	default:
+		tuner->rangelow  =  87.5 * FREQ_MUL;
+		tuner->rangehigh = 108   * FREQ_MUL;
+		break;
+	/* 1: 76   - 108 MHz (Japan wide band) */
+	case 1:
+		tuner->rangelow  =  76   * FREQ_MUL;
+		tuner->rangehigh = 108   * FREQ_MUL;
+		break;
+	/* 2: 76   -  90 MHz (Japan) */
+	case 2:
+		tuner->rangelow  =  76   * FREQ_MUL;
+		tuner->rangehigh =  90   * FREQ_MUL;
+		break;
+	};
+
+	/* stereo indicator == stereo (instead of mono) */
+	if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0)
+		tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
+	else
+		tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+#if defined(CONFIG_USB_SI470X) || defined(CONFIG_USB_SI470X_MODULE)
+	/* If there is a reliable method of detecting an RDS channel,
+	   then this code should check for that before setting this
+	   RDS subchannel. */
+	tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
+#endif
+
+	/* mono/stereo selector */
+	if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0)
+		tuner->audmode = V4L2_TUNER_MODE_STEREO;
+	else
+		tuner->audmode = V4L2_TUNER_MODE_MONO;
+
+	/* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */
+	/* measured in units of db쨉V in 1 db increments (max at ~75 db쨉V) */
+	tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI);
+	/* the ideal factor is 0xffff/75 = 873,8 */
+	tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10);
+
+	/* automatic frequency control: -1: freq to low, 1 freq to high */
+	/* AFCRL does only indicate that freq. differs, not if too low/high */
+	tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0;
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"get tuner failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_s_tuner - set tuner attributes
+ */
+static int si470x_vidioc_s_tuner(struct file *file, void *priv,
+		struct v4l2_tuner *tuner)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = -EINVAL;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	if (tuner->index != 0)
+		goto done;
+
+	/* mono/stereo selector */
+	switch (tuner->audmode) {
+	case V4L2_TUNER_MODE_MONO:
+		radio->registers[POWERCFG] |= POWERCFG_MONO;  /* force mono */
+		break;
+	case V4L2_TUNER_MODE_STEREO:
+		radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */
+		break;
+	default:
+		goto done;
+	}
+
+	retval = si470x_set_register(radio, POWERCFG);
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"set tuner failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_g_frequency - get tuner or modulator radio frequency
+ */
+static int si470x_vidioc_g_frequency(struct file *file, void *priv,
+		struct v4l2_frequency *freq)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	if (freq->tuner != 0) {
+		retval = -EINVAL;
+		goto done;
+	}
+
+	freq->type = V4L2_TUNER_RADIO;
+	retval = si470x_get_freq(radio, &freq->frequency);
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"get frequency failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_s_frequency - set tuner or modulator radio frequency
+ */
+static int si470x_vidioc_s_frequency(struct file *file, void *priv,
+		struct v4l2_frequency *freq)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	if (freq->tuner != 0) {
+		retval = -EINVAL;
+		goto done;
+	}
+
+	retval = si470x_set_freq(radio, freq->frequency);
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"set frequency failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek
+ */
+static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv,
+		struct v4l2_hw_freq_seek *seek)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety checks */
+	retval = si470x_disconnect_check(radio);
+	if (retval)
+		goto done;
+
+	if (seek->tuner != 0) {
+		retval = -EINVAL;
+		goto done;
+	}
+
+	retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward);
+
+done:
+	if (retval < 0)
+		dev_warn(&radio->videodev->dev,
+			"set hardware frequency seek failed with %d\n", retval);
+	return retval;
+}
+
+
+/*
+ * si470x_ioctl_ops - video device ioctl operations
+ */
+static const struct v4l2_ioctl_ops si470x_ioctl_ops = {
+	.vidioc_querycap	= si470x_vidioc_querycap,
+	.vidioc_queryctrl	= si470x_vidioc_queryctrl,
+	.vidioc_g_ctrl		= si470x_vidioc_g_ctrl,
+	.vidioc_s_ctrl		= si470x_vidioc_s_ctrl,
+	.vidioc_g_audio		= si470x_vidioc_g_audio,
+	.vidioc_g_tuner		= si470x_vidioc_g_tuner,
+	.vidioc_s_tuner		= si470x_vidioc_s_tuner,
+	.vidioc_g_frequency	= si470x_vidioc_g_frequency,
+	.vidioc_s_frequency	= si470x_vidioc_s_frequency,
+	.vidioc_s_hw_freq_seek	= si470x_vidioc_s_hw_freq_seek,
+};
+
+
+/*
+ * si470x_viddev_template - video device interface
+ */
+struct video_device si470x_viddev_template = {
+	.fops			= &si470x_fops,
+	.name			= DRIVER_NAME,
+	.release		= video_device_release,
+	.ioctl_ops		= &si470x_ioctl_ops,
+};
diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c
new file mode 100644
index 00000000000..2d53b6a9409
--- /dev/null
+++ b/drivers/media/radio/si470x/radio-si470x-i2c.c
@@ -0,0 +1,401 @@
+/*
+ * drivers/media/radio/si470x/radio-si470x-i2c.c
+ *
+ * I2C driver for radios with Silicon Labs Si470x FM Radio Receivers
+ *
+ * Copyright (c) 2009 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/*
+ * ToDo:
+ * - RDS support
+ */
+
+
+/* driver definitions */
+#define DRIVER_AUTHOR "Joonyoung Shim <jy0922.shim@samsung.com>";
+#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 0)
+#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver"
+#define DRIVER_DESC "I2C radio driver for Si470x FM Radio Receivers"
+#define DRIVER_VERSION "1.0.0"
+
+/* kernel includes */
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+#include "radio-si470x.h"
+
+
+/* I2C Device ID List */
+static const struct i2c_device_id si470x_i2c_id[] = {
+	/* Generic Entry */
+	{ "si470x", 0 },
+	/* Terminating entry */
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, si470x_i2c_id);
+
+
+
+/**************************************************************************
+ * Module Parameters
+ **************************************************************************/
+
+/* Radio Nr */
+static int radio_nr = -1;
+module_param(radio_nr, int, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio Nr");
+
+
+
+/**************************************************************************
+ * I2C Definitions
+ **************************************************************************/
+
+/* Write starts with the upper byte of register 0x02 */
+#define WRITE_REG_NUM		8
+#define WRITE_INDEX(i)		(i + 0x02)
+
+/* Read starts with the upper byte of register 0x0a */
+#define READ_REG_NUM		RADIO_REGISTER_NUM
+#define READ_INDEX(i)		((i + RADIO_REGISTER_NUM - 0x0a) % READ_REG_NUM)
+
+
+
+/**************************************************************************
+ * General Driver Functions - REGISTERs
+ **************************************************************************/
+
+/*
+ * si470x_get_register - read register
+ */
+int si470x_get_register(struct si470x_device *radio, int regnr)
+{
+	u16 buf[READ_REG_NUM];
+	struct i2c_msg msgs[1] = {
+		{ radio->client->addr, I2C_M_RD, sizeof(u16) * READ_REG_NUM,
+			(void *)buf },
+	};
+
+	if (i2c_transfer(radio->client->adapter, msgs, 1) != 1)
+		return -EIO;
+
+	radio->registers[regnr] = __be16_to_cpu(buf[READ_INDEX(regnr)]);
+
+	return 0;
+}
+
+
+/*
+ * si470x_set_register - write register
+ */
+int si470x_set_register(struct si470x_device *radio, int regnr)
+{
+	int i;
+	u16 buf[WRITE_REG_NUM];
+	struct i2c_msg msgs[1] = {
+		{ radio->client->addr, 0, sizeof(u16) * WRITE_REG_NUM,
+			(void *)buf },
+	};
+
+	for (i = 0; i < WRITE_REG_NUM; i++)
+		buf[i] = __cpu_to_be16(radio->registers[WRITE_INDEX(i)]);
+
+	if (i2c_transfer(radio->client->adapter, msgs, 1) != 1)
+		return -EIO;
+
+	return 0;
+}
+
+
+
+/**************************************************************************
+ * General Driver Functions - ENTIRE REGISTERS
+ **************************************************************************/
+
+/*
+ * si470x_get_all_registers - read entire registers
+ */
+static int si470x_get_all_registers(struct si470x_device *radio)
+{
+	int i;
+	u16 buf[READ_REG_NUM];
+	struct i2c_msg msgs[1] = {
+		{ radio->client->addr, I2C_M_RD, sizeof(u16) * READ_REG_NUM,
+			(void *)buf },
+	};
+
+	if (i2c_transfer(radio->client->adapter, msgs, 1) != 1)
+		return -EIO;
+
+	for (i = 0; i < READ_REG_NUM; i++)
+		radio->registers[i] = __be16_to_cpu(buf[READ_INDEX(i)]);
+
+	return 0;
+}
+
+
+
+/**************************************************************************
+ * General Driver Functions - DISCONNECT_CHECK
+ **************************************************************************/
+
+/*
+ * si470x_disconnect_check - check whether radio disconnects
+ */
+int si470x_disconnect_check(struct si470x_device *radio)
+{
+	return 0;
+}
+
+
+
+/**************************************************************************
+ * File Operations Interface
+ **************************************************************************/
+
+/*
+ * si470x_fops_open - file open
+ */
+static int si470x_fops_open(struct file *file)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	mutex_lock(&radio->lock);
+	radio->users++;
+
+	if (radio->users == 1)
+		/* start radio */
+		retval = si470x_start(radio);
+
+	mutex_unlock(&radio->lock);
+
+	return retval;
+}
+
+
+/*
+ * si470x_fops_release - file release
+ */
+static int si470x_fops_release(struct file *file)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety check */
+	if (!radio)
+		return -ENODEV;
+
+	mutex_lock(&radio->lock);
+	radio->users--;
+	if (radio->users == 0)
+		/* stop radio */
+		retval = si470x_stop(radio);
+
+	mutex_unlock(&radio->lock);
+
+	return retval;
+}
+
+
+/*
+ * si470x_fops - file operations interface
+ */
+const struct v4l2_file_operations si470x_fops = {
+	.owner		= THIS_MODULE,
+	.ioctl		= video_ioctl2,
+	.open		= si470x_fops_open,
+	.release	= si470x_fops_release,
+};
+
+
+
+/**************************************************************************
+ * Video4Linux Interface
+ **************************************************************************/
+
+/*
+ * si470x_vidioc_querycap - query device capabilities
+ */
+int si470x_vidioc_querycap(struct file *file, void *priv,
+		struct v4l2_capability *capability)
+{
+	strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver));
+	strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
+	capability->version = DRIVER_KERNEL_VERSION;
+	capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
+		V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+
+	return 0;
+}
+
+
+
+/**************************************************************************
+ * I2C Interface
+ **************************************************************************/
+
+/*
+ * si470x_i2c_probe - probe for the device
+ */
+static int __devinit si470x_i2c_probe(struct i2c_client *client,
+		const struct i2c_device_id *id)
+{
+	struct si470x_device *radio;
+	int retval = 0;
+	unsigned char version_warning = 0;
+
+	/* private data allocation and initialization */
+	radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL);
+	if (!radio) {
+		retval = -ENOMEM;
+		goto err_initial;
+	}
+	radio->users = 0;
+	radio->client = client;
+	mutex_init(&radio->lock);
+
+	/* video device allocation and initialization */
+	radio->videodev = video_device_alloc();
+	if (!radio->videodev) {
+		retval = -ENOMEM;
+		goto err_radio;
+	}
+	memcpy(radio->videodev, &si470x_viddev_template,
+			sizeof(si470x_viddev_template));
+	video_set_drvdata(radio->videodev, radio);
+
+	/* power up : need 110ms */
+	radio->registers[POWERCFG] = POWERCFG_ENABLE;
+	if (si470x_set_register(radio, POWERCFG) < 0) {
+		retval = -EIO;
+		goto err_all;
+	}
+	msleep(110);
+
+	/* get device and chip versions */
+	if (si470x_get_all_registers(radio) < 0) {
+		retval = -EIO;
+		goto err_video;
+	}
+	dev_info(&client->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n",
+			radio->registers[DEVICEID], radio->registers[CHIPID]);
+	if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) < RADIO_FW_VERSION) {
+		dev_warn(&client->dev,
+			"This driver is known to work with "
+			"firmware version %hu,\n", RADIO_FW_VERSION);
+		dev_warn(&client->dev,
+			"but the device has firmware version %hu.\n",
+			radio->registers[CHIPID] & CHIPID_FIRMWARE);
+		version_warning = 1;
+	}
+
+	/* give out version warning */
+	if (version_warning == 1) {
+		dev_warn(&client->dev,
+			"If you have some trouble using this driver,\n");
+		dev_warn(&client->dev,
+			"please report to V4L ML at "
+			"linux-media@vger.kernel.org\n");
+	}
+
+	/* set initial frequency */
+	si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */
+
+	/* register video device */
+	retval = video_register_device(radio->videodev, VFL_TYPE_RADIO,
+			radio_nr);
+	if (retval) {
+		dev_warn(&client->dev, "Could not register video device\n");
+		goto err_all;
+	}
+	i2c_set_clientdata(client, radio);
+
+	return 0;
+err_all:
+err_video:
+	video_device_release(radio->videodev);
+err_radio:
+	kfree(radio);
+err_initial:
+	return retval;
+}
+
+
+/*
+ * si470x_i2c_remove - remove the device
+ */
+static __devexit int si470x_i2c_remove(struct i2c_client *client)
+{
+	struct si470x_device *radio = i2c_get_clientdata(client);
+
+	video_unregister_device(radio->videodev);
+	kfree(radio);
+	i2c_set_clientdata(client, NULL);
+
+	return 0;
+}
+
+
+/*
+ * si470x_i2c_driver - i2c driver interface
+ */
+static struct i2c_driver si470x_i2c_driver = {
+	.driver = {
+		.name		= "si470x",
+		.owner		= THIS_MODULE,
+	},
+	.probe			= si470x_i2c_probe,
+	.remove			= __devexit_p(si470x_i2c_remove),
+	.id_table		= si470x_i2c_id,
+};
+
+
+
+/**************************************************************************
+ * Module Interface
+ **************************************************************************/
+
+/*
+ * si470x_i2c_init - module init
+ */
+static int __init si470x_i2c_init(void)
+{
+	printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n");
+	return i2c_add_driver(&si470x_i2c_driver);
+}
+
+
+/*
+ * si470x_i2c_exit - module exit
+ */
+static void __exit si470x_i2c_exit(void)
+{
+	i2c_del_driver(&si470x_i2c_driver);
+}
+
+
+module_init(si470x_i2c_init);
+module_exit(si470x_i2c_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c
new file mode 100644
index 00000000000..f2d0e1ddb30
--- /dev/null
+++ b/drivers/media/radio/si470x/radio-si470x-usb.c
@@ -0,0 +1,988 @@
+/*
+ *  drivers/media/radio/si470x/radio-si470x-usb.c
+ *
+ *  USB driver for radios with Silicon Labs Si470x FM Radio Receivers
+ *
+ *  Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/*
+ * ToDo:
+ * - add firmware download/update support
+ */
+
+
+/* driver definitions */
+#define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>"
+#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 10)
+#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver"
+#define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers"
+#define DRIVER_VERSION "1.0.10"
+
+/* kernel includes */
+#include <linux/usb.h>
+#include <linux/hid.h>
+
+#include "radio-si470x.h"
+
+
+/* USB Device ID List */
+static struct usb_device_id si470x_usb_driver_id_table[] = {
+	/* Silicon Labs USB FM Radio Reference Design */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) },
+	/* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) },
+	/* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) },
+	/* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, USB_CLASS_HID, 0, 0) },
+	/* Terminating entry */
+	{ }
+};
+MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table);
+
+
+
+/**************************************************************************
+ * Module Parameters
+ **************************************************************************/
+
+/* Radio Nr */
+static int radio_nr = -1;
+module_param(radio_nr, int, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio Nr");
+
+/* USB timeout */
+static unsigned int usb_timeout = 500;
+module_param(usb_timeout, uint, 0644);
+MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*");
+
+/* RDS buffer blocks */
+static unsigned int rds_buf = 100;
+module_param(rds_buf, uint, 0444);
+MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*");
+
+/* RDS maximum block errors */
+static unsigned short max_rds_errors = 1;
+/* 0 means   0  errors requiring correction */
+/* 1 means 1-2  errors requiring correction (used by original USBRadio.exe) */
+/* 2 means 3-5  errors requiring correction */
+/* 3 means   6+ errors or errors in checkword, correction not possible */
+module_param(max_rds_errors, ushort, 0644);
+MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*");
+
+
+
+/**************************************************************************
+ * USB HID Reports
+ **************************************************************************/
+
+/* Reports 1-16 give direct read/write access to the 16 Si470x registers */
+/* with the (REPORT_ID - 1) corresponding to the register address across USB */
+/* endpoint 0 using GET_REPORT and SET_REPORT */
+#define REGISTER_REPORT_SIZE	(RADIO_REGISTER_SIZE + 1)
+#define REGISTER_REPORT(reg)	((reg) + 1)
+
+/* Report 17 gives direct read/write access to the entire Si470x register */
+/* map across endpoint 0 using GET_REPORT and SET_REPORT */
+#define ENTIRE_REPORT_SIZE	(RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1)
+#define ENTIRE_REPORT		17
+
+/* Report 18 is used to send the lowest 6 Si470x registers up the HID */
+/* interrupt endpoint 1 to Windows every 20 milliseconds for status */
+#define RDS_REPORT_SIZE		(RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1)
+#define RDS_REPORT		18
+
+/* Report 19: LED state */
+#define LED_REPORT_SIZE		3
+#define LED_REPORT		19
+
+/* Report 19: stream */
+#define STREAM_REPORT_SIZE	3
+#define STREAM_REPORT		19
+
+/* Report 20: scratch */
+#define SCRATCH_PAGE_SIZE	63
+#define SCRATCH_REPORT_SIZE	(SCRATCH_PAGE_SIZE + 1)
+#define SCRATCH_REPORT		20
+
+/* Reports 19-22: flash upgrade of the C8051F321 */
+#define WRITE_REPORT_SIZE	4
+#define WRITE_REPORT		19
+#define FLASH_REPORT_SIZE	64
+#define FLASH_REPORT		20
+#define CRC_REPORT_SIZE		3
+#define CRC_REPORT		21
+#define RESPONSE_REPORT_SIZE	2
+#define RESPONSE_REPORT		22
+
+/* Report 23: currently unused, but can accept 60 byte reports on the HID */
+/* interrupt out endpoint 2 every 1 millisecond */
+#define UNUSED_REPORT		23
+
+
+
+/**************************************************************************
+ * Software/Hardware Versions from Scratch Page
+ **************************************************************************/
+#define RADIO_SW_VERSION_NOT_BOOTLOADABLE	6
+#define RADIO_SW_VERSION			7
+#define RADIO_HW_VERSION			1
+
+
+
+/**************************************************************************
+ * LED State Definitions
+ **************************************************************************/
+#define LED_COMMAND		0x35
+
+#define NO_CHANGE_LED		0x00
+#define ALL_COLOR_LED		0x01	/* streaming state */
+#define BLINK_GREEN_LED		0x02	/* connect state */
+#define BLINK_RED_LED		0x04
+#define BLINK_ORANGE_LED	0x10	/* disconnect state */
+#define SOLID_GREEN_LED		0x20	/* tuning/seeking state */
+#define SOLID_RED_LED		0x40	/* bootload state */
+#define SOLID_ORANGE_LED	0x80
+
+
+
+/**************************************************************************
+ * Stream State Definitions
+ **************************************************************************/
+#define STREAM_COMMAND	0x36
+#define STREAM_VIDPID	0x00
+#define STREAM_AUDIO	0xff
+
+
+
+/**************************************************************************
+ * Bootloader / Flash Commands
+ **************************************************************************/
+
+/* unique id sent to bootloader and required to put into a bootload state */
+#define UNIQUE_BL_ID		0x34
+
+/* mask for the flash data */
+#define FLASH_DATA_MASK		0x55
+
+/* bootloader commands */
+#define GET_SW_VERSION_COMMAND	0x00
+#define SET_PAGE_COMMAND	0x01
+#define ERASE_PAGE_COMMAND	0x02
+#define WRITE_PAGE_COMMAND	0x03
+#define CRC_ON_PAGE_COMMAND	0x04
+#define READ_FLASH_BYTE_COMMAND	0x05
+#define RESET_DEVICE_COMMAND	0x06
+#define GET_HW_VERSION_COMMAND	0x07
+#define BLANK			0xff
+
+/* bootloader command responses */
+#define COMMAND_OK		0x01
+#define COMMAND_FAILED		0x02
+#define COMMAND_PENDING		0x03
+
+
+
+/**************************************************************************
+ * General Driver Functions - REGISTER_REPORTs
+ **************************************************************************/
+
+/*
+ * si470x_get_report - receive a HID report
+ */
+static int si470x_get_report(struct si470x_device *radio, void *buf, int size)
+{
+	unsigned char *report = (unsigned char *) buf;
+	int retval;
+
+	retval = usb_control_msg(radio->usbdev,
+		usb_rcvctrlpipe(radio->usbdev, 0),
+		HID_REQ_GET_REPORT,
+		USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+		report[0], 2,
+		buf, size, usb_timeout);
+
+	if (retval < 0)
+		dev_warn(&radio->intf->dev,
+			"si470x_get_report: usb_control_msg returned %d\n",
+			retval);
+	return retval;
+}
+
+
+/*
+ * si470x_set_report - send a HID report
+ */
+static int si470x_set_report(struct si470x_device *radio, void *buf, int size)
+{
+	unsigned char *report = (unsigned char *) buf;
+	int retval;
+
+	retval = usb_control_msg(radio->usbdev,
+		usb_sndctrlpipe(radio->usbdev, 0),
+		HID_REQ_SET_REPORT,
+		USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
+		report[0], 2,
+		buf, size, usb_timeout);
+
+	if (retval < 0)
+		dev_warn(&radio->intf->dev,
+			"si470x_set_report: usb_control_msg returned %d\n",
+			retval);
+	return retval;
+}
+
+
+/*
+ * si470x_get_register - read register
+ */
+int si470x_get_register(struct si470x_device *radio, int regnr)
+{
+	unsigned char buf[REGISTER_REPORT_SIZE];
+	int retval;
+
+	buf[0] = REGISTER_REPORT(regnr);
+
+	retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
+
+	if (retval >= 0)
+		radio->registers[regnr] = get_unaligned_be16(&buf[1]);
+
+	return (retval < 0) ? -EINVAL : 0;
+}
+
+
+/*
+ * si470x_set_register - write register
+ */
+int si470x_set_register(struct si470x_device *radio, int regnr)
+{
+	unsigned char buf[REGISTER_REPORT_SIZE];
+	int retval;
+
+	buf[0] = REGISTER_REPORT(regnr);
+	put_unaligned_be16(radio->registers[regnr], &buf[1]);
+
+	retval = si470x_set_report(radio, (void *) &buf, sizeof(buf));
+
+	return (retval < 0) ? -EINVAL : 0;
+}
+
+
+
+/**************************************************************************
+ * General Driver Functions - ENTIRE_REPORT
+ **************************************************************************/
+
+/*
+ * si470x_get_all_registers - read entire registers
+ */
+static int si470x_get_all_registers(struct si470x_device *radio)
+{
+	unsigned char buf[ENTIRE_REPORT_SIZE];
+	int retval;
+	unsigned char regnr;
+
+	buf[0] = ENTIRE_REPORT;
+
+	retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
+
+	if (retval >= 0)
+		for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++)
+			radio->registers[regnr] = get_unaligned_be16(
+				&buf[regnr * RADIO_REGISTER_SIZE + 1]);
+
+	return (retval < 0) ? -EINVAL : 0;
+}
+
+
+
+/**************************************************************************
+ * General Driver Functions - LED_REPORT
+ **************************************************************************/
+
+/*
+ * si470x_set_led_state - sets the led state
+ */
+static int si470x_set_led_state(struct si470x_device *radio,
+		unsigned char led_state)
+{
+	unsigned char buf[LED_REPORT_SIZE];
+	int retval;
+
+	buf[0] = LED_REPORT;
+	buf[1] = LED_COMMAND;
+	buf[2] = led_state;
+
+	retval = si470x_set_report(radio, (void *) &buf, sizeof(buf));
+
+	return (retval < 0) ? -EINVAL : 0;
+}
+
+
+
+/**************************************************************************
+ * General Driver Functions - SCRATCH_REPORT
+ **************************************************************************/
+
+/*
+ * si470x_get_scratch_versions - gets the scratch page and version infos
+ */
+static int si470x_get_scratch_page_versions(struct si470x_device *radio)
+{
+	unsigned char buf[SCRATCH_REPORT_SIZE];
+	int retval;
+
+	buf[0] = SCRATCH_REPORT;
+
+	retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
+
+	if (retval < 0)
+		dev_warn(&radio->intf->dev, "si470x_get_scratch: "
+			"si470x_get_report returned %d\n", retval);
+	else {
+		radio->software_version = buf[1];
+		radio->hardware_version = buf[2];
+	}
+
+	return (retval < 0) ? -EINVAL : 0;
+}
+
+
+
+/**************************************************************************
+ * General Driver Functions - DISCONNECT_CHECK
+ **************************************************************************/
+
+/*
+ * si470x_disconnect_check - check whether radio disconnects
+ */
+int si470x_disconnect_check(struct si470x_device *radio)
+{
+	if (radio->disconnected)
+		return -EIO;
+	else
+		return 0;
+}
+
+
+
+/**************************************************************************
+ * RDS Driver Functions
+ **************************************************************************/
+
+/*
+ * si470x_int_in_callback - rds callback and processing function
+ *
+ * TODO: do we need to use mutex locks in some sections?
+ */
+static void si470x_int_in_callback(struct urb *urb)
+{
+	struct si470x_device *radio = urb->context;
+	unsigned char buf[RDS_REPORT_SIZE];
+	int retval;
+	unsigned char regnr;
+	unsigned char blocknum;
+	unsigned short bler; /* rds block errors */
+	unsigned short rds;
+	unsigned char tmpbuf[3];
+
+	if (urb->status) {
+		if (urb->status == -ENOENT ||
+				urb->status == -ECONNRESET ||
+				urb->status == -ESHUTDOWN) {
+			return;
+		} else {
+			dev_warn(&radio->intf->dev,
+			 "non-zero urb status (%d)\n", urb->status);
+			goto resubmit; /* Maybe we can recover. */
+		}
+	}
+
+	/* safety checks */
+	if (radio->disconnected)
+		return;
+	if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
+		goto resubmit;
+
+	if (urb->actual_length > 0) {
+		/* Update RDS registers with URB data */
+		buf[0] = RDS_REPORT;
+		for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++)
+			radio->registers[STATUSRSSI + regnr] =
+			    get_unaligned_be16(&radio->int_in_buffer[
+				regnr * RADIO_REGISTER_SIZE + 1]);
+		/* get rds blocks */
+		if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) {
+			/* No RDS group ready, better luck next time */
+			goto resubmit;
+		}
+		if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) {
+			/* RDS decoder not synchronized */
+			goto resubmit;
+		}
+		for (blocknum = 0; blocknum < 4; blocknum++) {
+			switch (blocknum) {
+			default:
+				bler = (radio->registers[STATUSRSSI] &
+						STATUSRSSI_BLERA) >> 9;
+				rds = radio->registers[RDSA];
+				break;
+			case 1:
+				bler = (radio->registers[READCHAN] &
+						READCHAN_BLERB) >> 14;
+				rds = radio->registers[RDSB];
+				break;
+			case 2:
+				bler = (radio->registers[READCHAN] &
+						READCHAN_BLERC) >> 12;
+				rds = radio->registers[RDSC];
+				break;
+			case 3:
+				bler = (radio->registers[READCHAN] &
+						READCHAN_BLERD) >> 10;
+				rds = radio->registers[RDSD];
+				break;
+			};
+
+			/* Fill the V4L2 RDS buffer */
+			put_unaligned_le16(rds, &tmpbuf);
+			tmpbuf[2] = blocknum;		/* offset name */
+			tmpbuf[2] |= blocknum << 3;	/* received offset */
+			if (bler > max_rds_errors)
+				tmpbuf[2] |= 0x80; /* uncorrectable errors */
+			else if (bler > 0)
+				tmpbuf[2] |= 0x40; /* corrected error(s) */
+
+			/* copy RDS block to internal buffer */
+			memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3);
+			radio->wr_index += 3;
+
+			/* wrap write pointer */
+			if (radio->wr_index >= radio->buf_size)
+				radio->wr_index = 0;
+
+			/* check for overflow */
+			if (radio->wr_index == radio->rd_index) {
+				/* increment and wrap read pointer */
+				radio->rd_index += 3;
+				if (radio->rd_index >= radio->buf_size)
+					radio->rd_index = 0;
+			}
+		}
+		if (radio->wr_index != radio->rd_index)
+			wake_up_interruptible(&radio->read_queue);
+	}
+
+resubmit:
+	/* Resubmit if we're still running. */
+	if (radio->int_in_running && radio->usbdev) {
+		retval = usb_submit_urb(radio->int_in_urb, GFP_ATOMIC);
+		if (retval) {
+			dev_warn(&radio->intf->dev,
+			       "resubmitting urb failed (%d)", retval);
+			radio->int_in_running = 0;
+		}
+	}
+}
+
+
+
+/**************************************************************************
+ * File Operations Interface
+ **************************************************************************/
+
+/*
+ * si470x_fops_read - read RDS data
+ */
+static ssize_t si470x_fops_read(struct file *file, char __user *buf,
+		size_t count, loff_t *ppos)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+	unsigned int block_count = 0;
+
+	/* switch on rds reception */
+	if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
+		si470x_rds_on(radio);
+
+	/* block if no new data available */
+	while (radio->wr_index == radio->rd_index) {
+		if (file->f_flags & O_NONBLOCK) {
+			retval = -EWOULDBLOCK;
+			goto done;
+		}
+		if (wait_event_interruptible(radio->read_queue,
+			radio->wr_index != radio->rd_index) < 0) {
+			retval = -EINTR;
+			goto done;
+		}
+	}
+
+	/* calculate block count from byte count */
+	count /= 3;
+
+	/* copy RDS block out of internal buffer and to user buffer */
+	mutex_lock(&radio->lock);
+	while (block_count < count) {
+		if (radio->rd_index == radio->wr_index)
+			break;
+
+		/* always transfer rds complete blocks */
+		if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3))
+			/* retval = -EFAULT; */
+			break;
+
+		/* increment and wrap read pointer */
+		radio->rd_index += 3;
+		if (radio->rd_index >= radio->buf_size)
+			radio->rd_index = 0;
+
+		/* increment counters */
+		block_count++;
+		buf += 3;
+		retval += 3;
+	}
+	mutex_unlock(&radio->lock);
+
+done:
+	return retval;
+}
+
+
+/*
+ * si470x_fops_poll - poll RDS data
+ */
+static unsigned int si470x_fops_poll(struct file *file,
+		struct poll_table_struct *pts)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* switch on rds reception */
+	if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0)
+		si470x_rds_on(radio);
+
+	poll_wait(file, &radio->read_queue, pts);
+
+	if (radio->rd_index != radio->wr_index)
+		retval = POLLIN | POLLRDNORM;
+
+	return retval;
+}
+
+
+/*
+ * si470x_fops_open - file open
+ */
+static int si470x_fops_open(struct file *file)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval;
+
+	lock_kernel();
+	radio->users++;
+
+	retval = usb_autopm_get_interface(radio->intf);
+	if (retval < 0) {
+		radio->users--;
+		retval = -EIO;
+		goto done;
+	}
+
+	if (radio->users == 1) {
+		/* start radio */
+		retval = si470x_start(radio);
+		if (retval < 0) {
+			usb_autopm_put_interface(radio->intf);
+			goto done;
+		}
+
+		/* initialize interrupt urb */
+		usb_fill_int_urb(radio->int_in_urb, radio->usbdev,
+			usb_rcvintpipe(radio->usbdev,
+			radio->int_in_endpoint->bEndpointAddress),
+			radio->int_in_buffer,
+			le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize),
+			si470x_int_in_callback,
+			radio,
+			radio->int_in_endpoint->bInterval);
+
+		radio->int_in_running = 1;
+		mb();
+
+		retval = usb_submit_urb(radio->int_in_urb, GFP_KERNEL);
+		if (retval) {
+			dev_info(&radio->intf->dev,
+				 "submitting int urb failed (%d)\n", retval);
+			radio->int_in_running = 0;
+			usb_autopm_put_interface(radio->intf);
+		}
+	}
+
+done:
+	unlock_kernel();
+	return retval;
+}
+
+
+/*
+ * si470x_fops_release - file release
+ */
+static int si470x_fops_release(struct file *file)
+{
+	struct si470x_device *radio = video_drvdata(file);
+	int retval = 0;
+
+	/* safety check */
+	if (!radio) {
+		retval = -ENODEV;
+		goto done;
+	}
+
+	mutex_lock(&radio->disconnect_lock);
+	radio->users--;
+	if (radio->users == 0) {
+		/* shutdown interrupt handler */
+		if (radio->int_in_running) {
+			radio->int_in_running = 0;
+		if (radio->int_in_urb)
+			usb_kill_urb(radio->int_in_urb);
+		}
+
+		if (radio->disconnected) {
+			video_unregister_device(radio->videodev);
+			kfree(radio->int_in_buffer);
+			kfree(radio->buffer);
+			kfree(radio);
+			goto unlock;
+		}
+
+		/* cancel read processes */
+		wake_up_interruptible(&radio->read_queue);
+
+		/* stop radio */
+		retval = si470x_stop(radio);
+		usb_autopm_put_interface(radio->intf);
+	}
+unlock:
+	mutex_unlock(&radio->disconnect_lock);
+done:
+	return retval;
+}
+
+
+/*
+ * si470x_fops - file operations interface
+ */
+const struct v4l2_file_operations si470x_fops = {
+	.owner		= THIS_MODULE,
+	.read		= si470x_fops_read,
+	.poll		= si470x_fops_poll,
+	.ioctl		= video_ioctl2,
+	.open		= si470x_fops_open,
+	.release	= si470x_fops_release,
+};
+
+
+
+/**************************************************************************
+ * Video4Linux Interface
+ **************************************************************************/
+
+/*
+ * si470x_vidioc_querycap - query device capabilities
+ */
+int si470x_vidioc_querycap(struct file *file, void *priv,
+		struct v4l2_capability *capability)
+{
+	struct si470x_device *radio = video_drvdata(file);
+
+	strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver));
+	strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card));
+	usb_make_path(radio->usbdev, capability->bus_info,
+			sizeof(capability->bus_info));
+	capability->version = DRIVER_KERNEL_VERSION;
+	capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
+		V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE;
+
+	return 0;
+}
+
+
+
+/**************************************************************************
+ * USB Interface
+ **************************************************************************/
+
+/*
+ * si470x_usb_driver_probe - probe for the device
+ */
+static int si470x_usb_driver_probe(struct usb_interface *intf,
+		const struct usb_device_id *id)
+{
+	struct si470x_device *radio;
+	struct usb_host_interface *iface_desc;
+	struct usb_endpoint_descriptor *endpoint;
+	int i, int_end_size, retval = 0;
+	unsigned char version_warning = 0;
+
+	/* private data allocation and initialization */
+	radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL);
+	if (!radio) {
+		retval = -ENOMEM;
+		goto err_initial;
+	}
+	radio->users = 0;
+	radio->disconnected = 0;
+	radio->usbdev = interface_to_usbdev(intf);
+	radio->intf = intf;
+	mutex_init(&radio->disconnect_lock);
+	mutex_init(&radio->lock);
+
+	iface_desc = intf->cur_altsetting;
+
+	/* Set up interrupt endpoint information. */
+	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+		endpoint = &iface_desc->endpoint[i].desc;
+		if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
+		 USB_DIR_IN) && ((endpoint->bmAttributes &
+		 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT))
+			radio->int_in_endpoint = endpoint;
+	}
+	if (!radio->int_in_endpoint) {
+		dev_info(&intf->dev, "could not find interrupt in endpoint\n");
+		retval = -EIO;
+		goto err_radio;
+	}
+
+	int_end_size = le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize);
+
+	radio->int_in_buffer = kmalloc(int_end_size, GFP_KERNEL);
+	if (!radio->int_in_buffer) {
+		dev_info(&intf->dev, "could not allocate int_in_buffer");
+		retval = -ENOMEM;
+		goto err_radio;
+	}
+
+	radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!radio->int_in_urb) {
+		dev_info(&intf->dev, "could not allocate int_in_urb");
+		retval = -ENOMEM;
+		goto err_intbuffer;
+	}
+
+	/* video device allocation and initialization */
+	radio->videodev = video_device_alloc();
+	if (!radio->videodev) {
+		retval = -ENOMEM;
+		goto err_intbuffer;
+	}
+	memcpy(radio->videodev, &si470x_viddev_template,
+			sizeof(si470x_viddev_template));
+	video_set_drvdata(radio->videodev, radio);
+
+	/* get device and chip versions */
+	if (si470x_get_all_registers(radio) < 0) {
+		retval = -EIO;
+		goto err_video;
+	}
+	dev_info(&intf->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n",
+			radio->registers[DEVICEID], radio->registers[CHIPID]);
+	if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) < RADIO_FW_VERSION) {
+		dev_warn(&intf->dev,
+			"This driver is known to work with "
+			"firmware version %hu,\n", RADIO_FW_VERSION);
+		dev_warn(&intf->dev,
+			"but the device has firmware version %hu.\n",
+			radio->registers[CHIPID] & CHIPID_FIRMWARE);
+		version_warning = 1;
+	}
+
+	/* get software and hardware versions */
+	if (si470x_get_scratch_page_versions(radio) < 0) {
+		retval = -EIO;
+		goto err_video;
+	}
+	dev_info(&intf->dev, "software version %d, hardware version %d\n",
+			radio->software_version, radio->hardware_version);
+	if (radio->software_version < RADIO_SW_VERSION) {
+		dev_warn(&intf->dev,
+			"This driver is known to work with "
+			"software version %hu,\n", RADIO_SW_VERSION);
+		dev_warn(&intf->dev,
+			"but the device has software version %hu.\n",
+			radio->software_version);
+		version_warning = 1;
+	}
+	if (radio->hardware_version < RADIO_HW_VERSION) {
+		dev_warn(&intf->dev,
+			"This driver is known to work with "
+			"hardware version %hu,\n", RADIO_HW_VERSION);
+		dev_warn(&intf->dev,
+			"but the device has hardware version %hu.\n",
+			radio->hardware_version);
+		version_warning = 1;
+	}
+
+	/* give out version warning */
+	if (version_warning == 1) {
+		dev_warn(&intf->dev,
+			"If you have some trouble using this driver,\n");
+		dev_warn(&intf->dev,
+			"please report to V4L ML at "
+			"linux-media@vger.kernel.org\n");
+	}
+
+	/* set initial frequency */
+	si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */
+
+	/* set led to connect state */
+	si470x_set_led_state(radio, BLINK_GREEN_LED);
+
+	/* rds buffer allocation */
+	radio->buf_size = rds_buf * 3;
+	radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL);
+	if (!radio->buffer) {
+		retval = -EIO;
+		goto err_video;
+	}
+
+	/* rds buffer configuration */
+	radio->wr_index = 0;
+	radio->rd_index = 0;
+	init_waitqueue_head(&radio->read_queue);
+
+	/* register video device */
+	retval = video_register_device(radio->videodev, VFL_TYPE_RADIO,
+			radio_nr);
+	if (retval) {
+		dev_warn(&intf->dev, "Could not register video device\n");
+		goto err_all;
+	}
+	usb_set_intfdata(intf, radio);
+
+	return 0;
+err_all:
+	kfree(radio->buffer);
+err_video:
+	video_device_release(radio->videodev);
+err_intbuffer:
+	kfree(radio->int_in_buffer);
+err_radio:
+	kfree(radio);
+err_initial:
+	return retval;
+}
+
+
+/*
+ * si470x_usb_driver_suspend - suspend the device
+ */
+static int si470x_usb_driver_suspend(struct usb_interface *intf,
+		pm_message_t message)
+{
+	dev_info(&intf->dev, "suspending now...\n");
+
+	return 0;
+}
+
+
+/*
+ * si470x_usb_driver_resume - resume the device
+ */
+static int si470x_usb_driver_resume(struct usb_interface *intf)
+{
+	dev_info(&intf->dev, "resuming now...\n");
+
+	return 0;
+}
+
+
+/*
+ * si470x_usb_driver_disconnect - disconnect the device
+ */
+static void si470x_usb_driver_disconnect(struct usb_interface *intf)
+{
+	struct si470x_device *radio = usb_get_intfdata(intf);
+
+	mutex_lock(&radio->disconnect_lock);
+	radio->disconnected = 1;
+	usb_set_intfdata(intf, NULL);
+	if (radio->users == 0) {
+		/* set led to disconnect state */
+		si470x_set_led_state(radio, BLINK_ORANGE_LED);
+
+		/* Free data structures. */
+		usb_free_urb(radio->int_in_urb);
+
+		kfree(radio->int_in_buffer);
+		video_unregister_device(radio->videodev);
+		kfree(radio->buffer);
+		kfree(radio);
+	}
+	mutex_unlock(&radio->disconnect_lock);
+}
+
+
+/*
+ * si470x_usb_driver - usb driver interface
+ */
+static struct usb_driver si470x_usb_driver = {
+	.name			= DRIVER_NAME,
+	.probe			= si470x_usb_driver_probe,
+	.disconnect		= si470x_usb_driver_disconnect,
+	.suspend		= si470x_usb_driver_suspend,
+	.resume			= si470x_usb_driver_resume,
+	.id_table		= si470x_usb_driver_id_table,
+	.supports_autosuspend	= 1,
+};
+
+
+
+/**************************************************************************
+ * Module Interface
+ **************************************************************************/
+
+/*
+ * si470x_module_init - module init
+ */
+static int __init si470x_module_init(void)
+{
+	printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n");
+	return usb_register(&si470x_usb_driver);
+}
+
+
+/*
+ * si470x_module_exit - module exit
+ */
+static void __exit si470x_module_exit(void)
+{
+	usb_deregister(&si470x_usb_driver);
+}
+
+
+module_init(si470x_module_init);
+module_exit(si470x_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/media/radio/si470x/radio-si470x.h b/drivers/media/radio/si470x/radio-si470x.h
new file mode 100644
index 00000000000..d0af194d194
--- /dev/null
+++ b/drivers/media/radio/si470x/radio-si470x.h
@@ -0,0 +1,225 @@
+/*
+ *  drivers/media/radio/si470x/radio-si470x.h
+ *
+ *  Driver for radios with Silicon Labs Si470x FM Radio Receivers
+ *
+ *  Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/* driver definitions */
+#define DRIVER_NAME "radio-si470x"
+
+
+/* kernel includes */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/input.h>
+#include <linux/version.h>
+#include <linux/videodev2.h>
+#include <linux/mutex.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/rds.h>
+#include <asm/unaligned.h>
+
+
+
+/**************************************************************************
+ * Register Definitions
+ **************************************************************************/
+#define RADIO_REGISTER_SIZE	2	/* 16 register bit width */
+#define RADIO_REGISTER_NUM	16	/* DEVICEID   ... RDSD */
+#define RDS_REGISTER_NUM	6	/* STATUSRSSI ... RDSD */
+
+#define DEVICEID		0	/* Device ID */
+#define DEVICEID_PN		0xf000	/* bits 15..12: Part Number */
+#define DEVICEID_MFGID		0x0fff	/* bits 11..00: Manufacturer ID */
+
+#define CHIPID			1	/* Chip ID */
+#define CHIPID_REV		0xfc00	/* bits 15..10: Chip Version */
+#define CHIPID_DEV		0x0200	/* bits 09..09: Device */
+#define CHIPID_FIRMWARE		0x01ff	/* bits 08..00: Firmware Version */
+
+#define POWERCFG		2	/* Power Configuration */
+#define POWERCFG_DSMUTE		0x8000	/* bits 15..15: Softmute Disable */
+#define POWERCFG_DMUTE		0x4000	/* bits 14..14: Mute Disable */
+#define POWERCFG_MONO		0x2000	/* bits 13..13: Mono Select */
+#define POWERCFG_RDSM		0x0800	/* bits 11..11: RDS Mode (Si4701 only) */
+#define POWERCFG_SKMODE		0x0400	/* bits 10..10: Seek Mode */
+#define POWERCFG_SEEKUP		0x0200	/* bits 09..09: Seek Direction */
+#define POWERCFG_SEEK		0x0100	/* bits 08..08: Seek */
+#define POWERCFG_DISABLE	0x0040	/* bits 06..06: Powerup Disable */
+#define POWERCFG_ENABLE		0x0001	/* bits 00..00: Powerup Enable */
+
+#define CHANNEL			3	/* Channel */
+#define CHANNEL_TUNE		0x8000	/* bits 15..15: Tune */
+#define CHANNEL_CHAN		0x03ff	/* bits 09..00: Channel Select */
+
+#define SYSCONFIG1		4	/* System Configuration 1 */
+#define SYSCONFIG1_RDSIEN	0x8000	/* bits 15..15: RDS Interrupt Enable (Si4701 only) */
+#define SYSCONFIG1_STCIEN	0x4000	/* bits 14..14: Seek/Tune Complete Interrupt Enable */
+#define SYSCONFIG1_RDS		0x1000	/* bits 12..12: RDS Enable (Si4701 only) */
+#define SYSCONFIG1_DE		0x0800	/* bits 11..11: De-emphasis (0=75us 1=50us) */
+#define SYSCONFIG1_AGCD		0x0400	/* bits 10..10: AGC Disable */
+#define SYSCONFIG1_BLNDADJ	0x00c0	/* bits 07..06: Stereo/Mono Blend Level Adjustment */
+#define SYSCONFIG1_GPIO3	0x0030	/* bits 05..04: General Purpose I/O 3 */
+#define SYSCONFIG1_GPIO2	0x000c	/* bits 03..02: General Purpose I/O 2 */
+#define SYSCONFIG1_GPIO1	0x0003	/* bits 01..00: General Purpose I/O 1 */
+
+#define SYSCONFIG2		5	/* System Configuration 2 */
+#define SYSCONFIG2_SEEKTH	0xff00	/* bits 15..08: RSSI Seek Threshold */
+#define SYSCONFIG2_BAND		0x0080	/* bits 07..06: Band Select */
+#define SYSCONFIG2_SPACE	0x0030	/* bits 05..04: Channel Spacing */
+#define SYSCONFIG2_VOLUME	0x000f	/* bits 03..00: Volume */
+
+#define SYSCONFIG3		6	/* System Configuration 3 */
+#define SYSCONFIG3_SMUTER	0xc000	/* bits 15..14: Softmute Attack/Recover Rate */
+#define SYSCONFIG3_SMUTEA	0x3000	/* bits 13..12: Softmute Attenuation */
+#define SYSCONFIG3_SKSNR	0x00f0	/* bits 07..04: Seek SNR Threshold */
+#define SYSCONFIG3_SKCNT	0x000f	/* bits 03..00: Seek FM Impulse Detection Threshold */
+
+#define TEST1			7	/* Test 1 */
+#define TEST1_AHIZEN		0x4000	/* bits 14..14: Audio High-Z Enable */
+
+#define TEST2			8	/* Test 2 */
+/* TEST2 only contains reserved bits */
+
+#define BOOTCONFIG		9	/* Boot Configuration */
+/* BOOTCONFIG only contains reserved bits */
+
+#define STATUSRSSI		10	/* Status RSSI */
+#define STATUSRSSI_RDSR		0x8000	/* bits 15..15: RDS Ready (Si4701 only) */
+#define STATUSRSSI_STC		0x4000	/* bits 14..14: Seek/Tune Complete */
+#define STATUSRSSI_SF		0x2000	/* bits 13..13: Seek Fail/Band Limit */
+#define STATUSRSSI_AFCRL	0x1000	/* bits 12..12: AFC Rail */
+#define STATUSRSSI_RDSS		0x0800	/* bits 11..11: RDS Synchronized (Si4701 only) */
+#define STATUSRSSI_BLERA	0x0600	/* bits 10..09: RDS Block A Errors (Si4701 only) */
+#define STATUSRSSI_ST		0x0100	/* bits 08..08: Stereo Indicator */
+#define STATUSRSSI_RSSI		0x00ff	/* bits 07..00: RSSI (Received Signal Strength Indicator) */
+
+#define READCHAN		11	/* Read Channel */
+#define READCHAN_BLERB		0xc000	/* bits 15..14: RDS Block D Errors (Si4701 only) */
+#define READCHAN_BLERC		0x3000	/* bits 13..12: RDS Block C Errors (Si4701 only) */
+#define READCHAN_BLERD		0x0c00	/* bits 11..10: RDS Block B Errors (Si4701 only) */
+#define READCHAN_READCHAN	0x03ff	/* bits 09..00: Read Channel */
+
+#define RDSA			12	/* RDSA */
+#define RDSA_RDSA		0xffff	/* bits 15..00: RDS Block A Data (Si4701 only) */
+
+#define RDSB			13	/* RDSB */
+#define RDSB_RDSB		0xffff	/* bits 15..00: RDS Block B Data (Si4701 only) */
+
+#define RDSC			14	/* RDSC */
+#define RDSC_RDSC		0xffff	/* bits 15..00: RDS Block C Data (Si4701 only) */
+
+#define RDSD			15	/* RDSD */
+#define RDSD_RDSD		0xffff	/* bits 15..00: RDS Block D Data (Si4701 only) */
+
+
+
+/**************************************************************************
+ * General Driver Definitions
+ **************************************************************************/
+
+/*
+ * si470x_device - private data
+ */
+struct si470x_device {
+	struct video_device *videodev;
+
+	/* driver management */
+	unsigned int users;
+
+	/* Silabs internal registers (0..15) */
+	unsigned short registers[RADIO_REGISTER_NUM];
+
+	/* RDS receive buffer */
+	wait_queue_head_t read_queue;
+	struct mutex lock;		/* buffer locking */
+	unsigned char *buffer;		/* size is always multiple of three */
+	unsigned int buf_size;
+	unsigned int rd_index;
+	unsigned int wr_index;
+
+#if defined(CONFIG_USB_SI470X) || defined(CONFIG_USB_SI470X_MODULE)
+	/* reference to USB and video device */
+	struct usb_device *usbdev;
+	struct usb_interface *intf;
+
+	/* Interrupt endpoint handling */
+	char *int_in_buffer;
+	struct usb_endpoint_descriptor *int_in_endpoint;
+	struct urb *int_in_urb;
+	int int_in_running;
+
+	/* scratch page */
+	unsigned char software_version;
+	unsigned char hardware_version;
+
+	/* driver management */
+	unsigned char disconnected;
+	struct mutex disconnect_lock;
+#endif
+
+#if defined(CONFIG_I2C_SI470X) || defined(CONFIG_I2C_SI470X_MODULE)
+	struct i2c_client *client;
+#endif
+};
+
+
+
+/**************************************************************************
+ * Firmware Versions
+ **************************************************************************/
+
+#define RADIO_FW_VERSION	15
+
+
+
+/**************************************************************************
+ * Frequency Multiplicator
+ **************************************************************************/
+
+/*
+ * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW,
+ * 62.5 kHz otherwise.
+ * The tuner is able to have a channel spacing of 50, 100 or 200 kHz.
+ * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW
+ * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000
+ */
+#define FREQ_MUL (1000000 / 62.5)
+
+
+
+/**************************************************************************
+ * Common Functions
+ **************************************************************************/
+extern const struct v4l2_file_operations si470x_fops;
+extern struct video_device si470x_viddev_template;
+int si470x_get_register(struct si470x_device *radio, int regnr);
+int si470x_set_register(struct si470x_device *radio, int regnr);
+int si470x_disconnect_check(struct si470x_device *radio);
+int si470x_set_freq(struct si470x_device *radio, unsigned int freq);
+int si470x_start(struct si470x_device *radio);
+int si470x_stop(struct si470x_device *radio);
+int si470x_rds_on(struct si470x_device *radio);
+int si470x_vidioc_querycap(struct file *file, void *priv,
+		struct v4l2_capability *capability);
diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c
new file mode 100644
index 00000000000..6a0028eb461
--- /dev/null
+++ b/drivers/media/radio/si4713-i2c.c
@@ -0,0 +1,2060 @@
+/*
+ * drivers/media/radio/si4713-i2c.c
+ *
+ * Silicon Labs Si4713 FM Radio Transmitter I2C commands.
+ *
+ * Copyright (c) 2009 Nokia Corporation
+ * Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/mutex.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.h>
+
+#include "si4713-i2c.h"
+
+/* module parameters */
+static int debug;
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug level (0 - 2)");
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>");
+MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter");
+MODULE_VERSION("0.0.1");
+
+#define DEFAULT_RDS_PI			0x00
+#define DEFAULT_RDS_PTY			0x00
+#define DEFAULT_RDS_PS_NAME		""
+#define DEFAULT_RDS_RADIO_TEXT		DEFAULT_RDS_PS_NAME
+#define DEFAULT_RDS_DEVIATION		0x00C8
+#define DEFAULT_RDS_PS_REPEAT_COUNT	0x0003
+#define DEFAULT_LIMITER_RTIME		0x1392
+#define DEFAULT_LIMITER_DEV		0x102CA
+#define DEFAULT_PILOT_FREQUENCY 	0x4A38
+#define DEFAULT_PILOT_DEVIATION		0x1A5E
+#define DEFAULT_ACOMP_ATIME		0x0000
+#define DEFAULT_ACOMP_RTIME		0xF4240L
+#define DEFAULT_ACOMP_GAIN		0x0F
+#define DEFAULT_ACOMP_THRESHOLD 	(-0x28)
+#define DEFAULT_MUTE			0x01
+#define DEFAULT_POWER_LEVEL		88
+#define DEFAULT_FREQUENCY		8800
+#define DEFAULT_PREEMPHASIS		FMPE_EU
+#define DEFAULT_TUNE_RNL		0xFF
+
+#define to_si4713_device(sd)	container_of(sd, struct si4713_device, sd)
+
+/* frequency domain transformation (using times 10 to avoid floats) */
+#define FREQDEV_UNIT	100000
+#define FREQV4L2_MULTI	625
+#define si4713_to_v4l2(f)	((f * FREQDEV_UNIT) / FREQV4L2_MULTI)
+#define v4l2_to_si4713(f)	((f * FREQV4L2_MULTI) / FREQDEV_UNIT)
+#define FREQ_RANGE_LOW			7600
+#define FREQ_RANGE_HIGH			10800
+
+#define MAX_ARGS 7
+
+#define RDS_BLOCK			8
+#define RDS_BLOCK_CLEAR			0x03
+#define RDS_BLOCK_LOAD			0x04
+#define RDS_RADIOTEXT_2A		0x20
+#define RDS_RADIOTEXT_BLK_SIZE		4
+#define RDS_RADIOTEXT_INDEX_MAX		0x0F
+#define RDS_CARRIAGE_RETURN		0x0D
+
+#define rds_ps_nblocks(len)	((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0))
+
+#define get_status_bit(p, b, m)	(((p) & (m)) >> (b))
+#define set_bits(p, v, b, m)	(((p) & ~(m)) | ((v) << (b)))
+
+#define ATTACK_TIME_UNIT	500
+
+#define POWER_OFF			0x00
+#define POWER_ON			0x01
+
+#define msb(x)                  ((u8)((u16) x >> 8))
+#define lsb(x)                  ((u8)((u16) x &  0x00FF))
+#define compose_u16(msb, lsb)	(((u16)msb << 8) | lsb)
+#define check_command_failed(status)	(!(status & SI4713_CTS) || \
+					(status & SI4713_ERR))
+/* mute definition */
+#define set_mute(p)	((p & 1) | ((p & 1) << 1));
+#define get_mute(p)	(p & 0x01)
+
+#ifdef DEBUG
+#define DBG_BUFFER(device, message, buffer, size)			\
+	{								\
+		int i;							\
+		char str[(size)*5];					\
+		for (i = 0; i < size; i++)				\
+			sprintf(str + i * 5, " 0x%02x", buffer[i]);	\
+		v4l2_dbg(2, debug, device, "%s:%s\n", message, str);	\
+	}
+#else
+#define DBG_BUFFER(device, message, buffer, size)
+#endif
+
+/*
+ * Values for limiter release time (sorted by second column)
+ *	device	release
+ *	value	time (us)
+ */
+static long limiter_times[] = {
+	2000,	250,
+	1000,	500,
+	510,	1000,
+	255,	2000,
+	170,	3000,
+	127,	4020,
+	102,	5010,
+	85,	6020,
+	73,	7010,
+	64,	7990,
+	57,	8970,
+	51,	10030,
+	25,	20470,
+	17,	30110,
+	13,	39380,
+	10,	51190,
+	8,	63690,
+	7,	73140,
+	6,	85330,
+	5,	102390,
+};
+
+/*
+ * Values for audio compression release time (sorted by second column)
+ *	device	release
+ *	value	time (us)
+ */
+static unsigned long acomp_rtimes[] = {
+	0,	100000,
+	1,	200000,
+	2,	350000,
+	3,	525000,
+	4,	1000000,
+};
+
+/*
+ * Values for preemphasis (sorted by second column)
+ *	device	preemphasis
+ *	value	value (v4l2)
+ */
+static unsigned long preemphasis_values[] = {
+	FMPE_DISABLED,	V4L2_PREEMPHASIS_DISABLED,
+	FMPE_EU,	V4L2_PREEMPHASIS_50_uS,
+	FMPE_USA,	V4L2_PREEMPHASIS_75_uS,
+};
+
+static int usecs_to_dev(unsigned long usecs, unsigned long const array[],
+			int size)
+{
+	int i;
+	int rval = -EINVAL;
+
+	for (i = 0; i < size / 2; i++)
+		if (array[(i * 2) + 1] >= usecs) {
+			rval = array[i * 2];
+			break;
+		}
+
+	return rval;
+}
+
+static unsigned long dev_to_usecs(int value, unsigned long const array[],
+			int size)
+{
+	int i;
+	int rval = -EINVAL;
+
+	for (i = 0; i < size / 2; i++)
+		if (array[i * 2] == value) {
+			rval = array[(i * 2) + 1];
+			break;
+		}
+
+	return rval;
+}
+
+/* si4713_handler: IRQ handler, just complete work */
+static irqreturn_t si4713_handler(int irq, void *dev)
+{
+	struct si4713_device *sdev = dev;
+
+	v4l2_dbg(2, debug, &sdev->sd,
+			"%s: sending signal to completion work.\n", __func__);
+	complete(&sdev->work);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * si4713_send_command - sends a command to si4713 and waits its response
+ * @sdev: si4713_device structure for the device we are communicating
+ * @command: command id
+ * @args: command arguments we are sending (up to 7)
+ * @argn: actual size of @args
+ * @response: buffer to place the expected response from the device (up to 15)
+ * @respn: actual size of @response
+ * @usecs: amount of time to wait before reading the response (in usecs)
+ */
+static int si4713_send_command(struct si4713_device *sdev, const u8 command,
+				const u8 args[], const int argn,
+				u8 response[], const int respn, const int usecs)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
+	u8 data1[MAX_ARGS + 1];
+	int err;
+
+	if (!client->adapter)
+		return -ENODEV;
+
+	/* First send the command and its arguments */
+	data1[0] = command;
+	memcpy(data1 + 1, args, argn);
+	DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1);
+
+	err = i2c_master_send(client, data1, argn + 1);
+	if (err != argn + 1) {
+		v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n",
+			command);
+		return (err > 0) ? -EIO : err;
+	}
+
+	/* Wait response from interrupt */
+	if (!wait_for_completion_timeout(&sdev->work,
+				usecs_to_jiffies(usecs) + 1))
+		v4l2_warn(&sdev->sd,
+				"(%s) Device took too much time to answer.\n",
+				__func__);
+
+	/* Then get the response */
+	err = i2c_master_recv(client, response, respn);
+	if (err != respn) {
+		v4l2_err(&sdev->sd,
+			"Error while reading response for command 0x%02x\n",
+			command);
+		return (err > 0) ? -EIO : err;
+	}
+
+	DBG_BUFFER(&sdev->sd, "Response", response, respn);
+	if (check_command_failed(response[0]))
+		return -EBUSY;
+
+	return 0;
+}
+
+/*
+ * si4713_read_property - reads a si4713 property
+ * @sdev: si4713_device structure for the device we are communicating
+ * @prop: property identification number
+ * @pv: property value to be returned on success
+ */
+static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv)
+{
+	int err;
+	u8 val[SI4713_GET_PROP_NRESP];
+	/*
+	 * 	.First byte = 0
+	 * 	.Second byte = property's MSB
+	 * 	.Third byte = property's LSB
+	 */
+	const u8 args[SI4713_GET_PROP_NARGS] = {
+		0x00,
+		msb(prop),
+		lsb(prop),
+	};
+
+	err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (err < 0)
+		return err;
+
+	*pv = compose_u16(val[2], val[3]);
+
+	v4l2_dbg(1, debug, &sdev->sd,
+			"%s: property=0x%02x value=0x%02x status=0x%02x\n",
+			__func__, prop, *pv, val[0]);
+
+	return err;
+}
+
+/*
+ * si4713_write_property - modifies a si4713 property
+ * @sdev: si4713_device structure for the device we are communicating
+ * @prop: property identification number
+ * @val: new value for that property
+ */
+static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val)
+{
+	int rval;
+	u8 resp[SI4713_SET_PROP_NRESP];
+	/*
+	 * 	.First byte = 0
+	 * 	.Second byte = property's MSB
+	 * 	.Third byte = property's LSB
+	 * 	.Fourth byte = value's MSB
+	 * 	.Fifth byte = value's LSB
+	 */
+	const u8 args[SI4713_SET_PROP_NARGS] = {
+		0x00,
+		msb(prop),
+		lsb(prop),
+		msb(val),
+		lsb(val),
+	};
+
+	rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY,
+					args, ARRAY_SIZE(args),
+					resp, ARRAY_SIZE(resp),
+					DEFAULT_TIMEOUT);
+
+	if (rval < 0)
+		return rval;
+
+	v4l2_dbg(1, debug, &sdev->sd,
+			"%s: property=0x%02x value=0x%02x status=0x%02x\n",
+			__func__, prop, val, resp[0]);
+
+	/*
+	 * As there is no command response for SET_PROPERTY,
+	 * wait Tcomp time to finish before proceed, in order
+	 * to have property properly set.
+	 */
+	msleep(TIMEOUT_SET_PROPERTY);
+
+	return rval;
+}
+
+/*
+ * si4713_powerup - Powers the device up
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_powerup(struct si4713_device *sdev)
+{
+	int err;
+	u8 resp[SI4713_PWUP_NRESP];
+	/*
+	 * 	.First byte = Enabled interrupts and boot function
+	 * 	.Second byte = Input operation mode
+	 */
+	const u8 args[SI4713_PWUP_NARGS] = {
+		SI4713_PWUP_CTSIEN | SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX,
+		SI4713_PWUP_OPMOD_ANALOG,
+	};
+
+	if (sdev->power_state)
+		return 0;
+
+	sdev->platform_data->set_power(1);
+	err = si4713_send_command(sdev, SI4713_CMD_POWER_UP,
+					args, ARRAY_SIZE(args),
+					resp, ARRAY_SIZE(resp),
+					TIMEOUT_POWER_UP);
+
+	if (!err) {
+		v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n",
+				resp[0]);
+		v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n");
+		sdev->power_state = POWER_ON;
+
+		err = si4713_write_property(sdev, SI4713_GPO_IEN,
+						SI4713_STC_INT | SI4713_CTS);
+	} else {
+		sdev->platform_data->set_power(0);
+	}
+
+	return err;
+}
+
+/*
+ * si4713_powerdown - Powers the device down
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_powerdown(struct si4713_device *sdev)
+{
+	int err;
+	u8 resp[SI4713_PWDN_NRESP];
+
+	if (!sdev->power_state)
+		return 0;
+
+	err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN,
+					NULL, 0,
+					resp, ARRAY_SIZE(resp),
+					DEFAULT_TIMEOUT);
+
+	if (!err) {
+		v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n",
+				resp[0]);
+		v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n");
+		sdev->platform_data->set_power(0);
+		sdev->power_state = POWER_OFF;
+	}
+
+	return err;
+}
+
+/*
+ * si4713_checkrev - Checks if we are treating a device with the correct rev.
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_checkrev(struct si4713_device *sdev)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
+	int rval;
+	u8 resp[SI4713_GETREV_NRESP];
+
+	mutex_lock(&sdev->mutex);
+
+	rval = si4713_send_command(sdev, SI4713_CMD_GET_REV,
+					NULL, 0,
+					resp, ARRAY_SIZE(resp),
+					DEFAULT_TIMEOUT);
+
+	if (rval < 0)
+		goto unlock;
+
+	if (resp[1] == SI4713_PRODUCT_NUMBER) {
+		v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n",
+				client->addr << 1, client->adapter->name);
+	} else {
+		v4l2_err(&sdev->sd, "Invalid product number\n");
+		rval = -EINVAL;
+	}
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+/*
+ * si4713_wait_stc - Waits STC interrupt and clears status bits. Usefull
+ *		     for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS
+ * @sdev: si4713_device structure for the device we are communicating
+ * @usecs: timeout to wait for STC interrupt signal
+ */
+static int si4713_wait_stc(struct si4713_device *sdev, const int usecs)
+{
+	int err;
+	u8 resp[SI4713_GET_STATUS_NRESP];
+
+	/* Wait response from STC interrupt */
+	if (!wait_for_completion_timeout(&sdev->work,
+			usecs_to_jiffies(usecs) + 1))
+		v4l2_warn(&sdev->sd,
+			"%s: device took too much time to answer (%d usec).\n",
+				__func__, usecs);
+
+	/* Clear status bits */
+	err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS,
+					NULL, 0,
+					resp, ARRAY_SIZE(resp),
+					DEFAULT_TIMEOUT);
+
+	if (err < 0)
+		goto exit;
+
+	v4l2_dbg(1, debug, &sdev->sd,
+			"%s: status bits: 0x%02x\n", __func__, resp[0]);
+
+	if (!(resp[0] & SI4713_STC_INT))
+		err = -EIO;
+
+exit:
+	return err;
+}
+
+/*
+ * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning
+ * 			frequency between 76 and 108 MHz in 10 kHz units and
+ * 			steps of 50 kHz.
+ * @sdev: si4713_device structure for the device we are communicating
+ * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz)
+ */
+static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency)
+{
+	int err;
+	u8 val[SI4713_TXFREQ_NRESP];
+	/*
+	 * 	.First byte = 0
+	 * 	.Second byte = frequency's MSB
+	 * 	.Third byte = frequency's LSB
+	 */
+	const u8 args[SI4713_TXFREQ_NARGS] = {
+		0x00,
+		msb(frequency),
+		lsb(frequency),
+	};
+
+	err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (err < 0)
+		return err;
+
+	v4l2_dbg(1, debug, &sdev->sd,
+			"%s: frequency=0x%02x status=0x%02x\n", __func__,
+			frequency, val[0]);
+
+	err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE);
+	if (err < 0)
+		return err;
+
+	return compose_u16(args[1], args[2]);
+}
+
+/*
+ * si4713_tx_tune_power - Sets the RF voltage level between 88 and 115 dBuV in
+ * 			1 dB units. A value of 0x00 indicates off. The command
+ * 			also sets the antenna tuning capacitance. A value of 0
+ * 			indicates autotuning, and a value of 1 - 191 indicates
+ * 			a manual override, which results in a tuning
+ * 			capacitance of 0.25 pF x @antcap.
+ * @sdev: si4713_device structure for the device we are communicating
+ * @power: tuning power (88 - 115 dBuV, unit/step 1 dB)
+ * @antcap: value of antenna tuning capacitor (0 - 191)
+ */
+static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power,
+				u8 antcap)
+{
+	int err;
+	u8 val[SI4713_TXPWR_NRESP];
+	/*
+	 * 	.First byte = 0
+	 * 	.Second byte = 0
+	 * 	.Third byte = power
+	 * 	.Fourth byte = antcap
+	 */
+	const u8 args[SI4713_TXPWR_NARGS] = {
+		0x00,
+		0x00,
+		power,
+		antcap,
+	};
+
+	if (((power > 0) && (power < SI4713_MIN_POWER)) ||
+		power > SI4713_MAX_POWER || antcap > SI4713_MAX_ANTCAP)
+		return -EDOM;
+
+	err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (err < 0)
+		return err;
+
+	v4l2_dbg(1, debug, &sdev->sd,
+			"%s: power=0x%02x antcap=0x%02x status=0x%02x\n",
+			__func__, power, antcap, val[0]);
+
+	return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER);
+}
+
+/*
+ * si4713_tx_tune_measure - Enters receive mode and measures the received noise
+ * 			level in units of dBuV on the selected frequency.
+ * 			The Frequency must be between 76 and 108 MHz in 10 kHz
+ * 			units and steps of 50 kHz. The command also sets the
+ * 			antenna	tuning capacitance. A value of 0 means
+ * 			autotuning, and a value of 1 to 191 indicates manual
+ * 			override.
+ * @sdev: si4713_device structure for the device we are communicating
+ * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz)
+ * @antcap: value of antenna tuning capacitor (0 - 191)
+ */
+static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency,
+					u8 antcap)
+{
+	int err;
+	u8 val[SI4713_TXMEA_NRESP];
+	/*
+	 * 	.First byte = 0
+	 * 	.Second byte = frequency's MSB
+	 * 	.Third byte = frequency's LSB
+	 * 	.Fourth byte = antcap
+	 */
+	const u8 args[SI4713_TXMEA_NARGS] = {
+		0x00,
+		msb(frequency),
+		lsb(frequency),
+		antcap,
+	};
+
+	sdev->tune_rnl = DEFAULT_TUNE_RNL;
+
+	if (antcap > SI4713_MAX_ANTCAP)
+		return -EDOM;
+
+	err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (err < 0)
+		return err;
+
+	v4l2_dbg(1, debug, &sdev->sd,
+			"%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n",
+			__func__, frequency, antcap, val[0]);
+
+	return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE);
+}
+
+/*
+ * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or
+ * 			tx_tune_power commands. This command return the current
+ * 			frequency, output voltage in dBuV, the antenna tunning
+ * 			capacitance value and the received noise level. The
+ * 			command also clears the stcint interrupt bit when the
+ * 			first bit of its arguments is high.
+ * @sdev: si4713_device structure for the device we are communicating
+ * @intack: 0x01 to clear the seek/tune complete interrupt status indicator.
+ * @frequency: returned frequency
+ * @power: returned power
+ * @antcap: returned antenna capacitance
+ * @noise: returned noise level
+ */
+static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack,
+					u16 *frequency,	u8 *power,
+					u8 *antcap, u8 *noise)
+{
+	int err;
+	u8 val[SI4713_TXSTATUS_NRESP];
+	/*
+	 * 	.First byte = intack bit
+	 */
+	const u8 args[SI4713_TXSTATUS_NARGS] = {
+		intack & SI4713_INTACK_MASK,
+	};
+
+	err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (!err) {
+		v4l2_dbg(1, debug, &sdev->sd,
+			"%s: status=0x%02x\n", __func__, val[0]);
+		*frequency = compose_u16(val[2], val[3]);
+		sdev->frequency = *frequency;
+		*power = val[5];
+		*antcap = val[6];
+		*noise = val[7];
+		v4l2_dbg(1, debug, &sdev->sd, "%s: response: %d x 10 kHz "
+				"(power %d, antcap %d, rnl %d)\n", __func__,
+				*frequency, *power, *antcap, *noise);
+	}
+
+	return err;
+}
+
+/*
+ * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer.
+ * @sdev: si4713_device structure for the device we are communicating
+ * @mode: the buffer operation mode.
+ * @rdsb: RDS Block B
+ * @rdsc: RDS Block C
+ * @rdsd: RDS Block D
+ * @cbleft: returns the number of available circular buffer blocks minus the
+ *          number of used circular buffer blocks.
+ */
+static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb,
+				u16 rdsc, u16 rdsd, s8 *cbleft)
+{
+	int err;
+	u8 val[SI4713_RDSBUFF_NRESP];
+
+	const u8 args[SI4713_RDSBUFF_NARGS] = {
+		mode & SI4713_RDSBUFF_MODE_MASK,
+		msb(rdsb),
+		lsb(rdsb),
+		msb(rdsc),
+		lsb(rdsc),
+		msb(rdsd),
+		lsb(rdsd),
+	};
+
+	err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (!err) {
+		v4l2_dbg(1, debug, &sdev->sd,
+			"%s: status=0x%02x\n", __func__, val[0]);
+		*cbleft = (s8)val[2] - val[3];
+		v4l2_dbg(1, debug, &sdev->sd, "%s: response: interrupts"
+				" 0x%02x cb avail: %d cb used %d fifo avail"
+				" %d fifo used %d\n", __func__, val[1],
+				val[2], val[3], val[4], val[5]);
+	}
+
+	return err;
+}
+
+/*
+ * si4713_tx_rds_ps - Loads the program service buffer.
+ * @sdev: si4713_device structure for the device we are communicating
+ * @psid: program service id to be loaded.
+ * @pschar: assumed 4 size char array to be loaded into the program service
+ */
+static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid,
+				unsigned char *pschar)
+{
+	int err;
+	u8 val[SI4713_RDSPS_NRESP];
+
+	const u8 args[SI4713_RDSPS_NARGS] = {
+		psid & SI4713_RDSPS_PSID_MASK,
+		pschar[0],
+		pschar[1],
+		pschar[2],
+		pschar[3],
+	};
+
+	err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS,
+				  args, ARRAY_SIZE(args), val,
+				  ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+	if (err < 0)
+		return err;
+
+	v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]);
+
+	return err;
+}
+
+static int si4713_set_power_state(struct si4713_device *sdev, u8 value)
+{
+	int rval;
+
+	mutex_lock(&sdev->mutex);
+
+	if (value)
+		rval = si4713_powerup(sdev);
+	else
+		rval = si4713_powerdown(sdev);
+
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+static int si4713_set_mute(struct si4713_device *sdev, u16 mute)
+{
+	int rval = 0;
+
+	mute = set_mute(mute);
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state)
+		rval = si4713_write_property(sdev,
+				SI4713_TX_LINE_INPUT_MUTE, mute);
+
+	if (rval >= 0)
+		sdev->mute = get_mute(mute);
+
+	mutex_unlock(&sdev->mutex);
+
+	return rval;
+}
+
+static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name)
+{
+	int rval = 0, i;
+	u8 len = 0;
+
+	/* We want to clear the whole thing */
+	if (!strlen(ps_name))
+		memset(ps_name, 0, MAX_RDS_PS_NAME + 1);
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		/* Write the new ps name and clear the padding */
+		for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) {
+			rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)),
+						ps_name + i);
+			if (rval < 0)
+				goto unlock;
+		}
+
+		/* Setup the size to be sent */
+		if (strlen(ps_name))
+			len = strlen(ps_name) - 1;
+		else
+			len = 1;
+
+		rval = si4713_write_property(sdev,
+				SI4713_TX_RDS_PS_MESSAGE_COUNT,
+				rds_ps_nblocks(len));
+		if (rval < 0)
+			goto unlock;
+
+		rval = si4713_write_property(sdev,
+				SI4713_TX_RDS_PS_REPEAT_COUNT,
+				DEFAULT_RDS_PS_REPEAT_COUNT * 2);
+		if (rval < 0)
+			goto unlock;
+	}
+
+	strncpy(sdev->rds_info.ps_name, ps_name, MAX_RDS_PS_NAME);
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+static int si4713_set_rds_radio_text(struct si4713_device *sdev, char *rt)
+{
+	int rval = 0, i;
+	u16 t_index = 0;
+	u8 b_index = 0, cr_inserted = 0;
+	s8 left;
+
+	mutex_lock(&sdev->mutex);
+
+	if (!sdev->power_state)
+		goto copy;
+
+	rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left);
+	if (rval < 0)
+		goto unlock;
+
+	if (!strlen(rt))
+		goto copy;
+
+	do {
+		/* RDS spec says that if the last block isn't used,
+		 * then apply a carriage return
+		 */
+		if (t_index < (RDS_RADIOTEXT_INDEX_MAX *
+			RDS_RADIOTEXT_BLK_SIZE)) {
+			for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) {
+				if (!rt[t_index + i] || rt[t_index + i] ==
+					RDS_CARRIAGE_RETURN) {
+					rt[t_index + i] = RDS_CARRIAGE_RETURN;
+					cr_inserted = 1;
+					break;
+				}
+			}
+		}
+
+		rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD,
+				compose_u16(RDS_RADIOTEXT_2A, b_index++),
+				compose_u16(rt[t_index], rt[t_index + 1]),
+				compose_u16(rt[t_index + 2], rt[t_index + 3]),
+				&left);
+		if (rval < 0)
+			goto unlock;
+
+		t_index += RDS_RADIOTEXT_BLK_SIZE;
+
+		if (cr_inserted)
+			break;
+	} while (left > 0);
+
+copy:
+	strncpy(sdev->rds_info.radio_text, rt, MAX_RDS_RADIO_TEXT);
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id,
+		u32 **shadow, s32 *bit, s32 *mask, u16 *property, int *mul,
+		unsigned long **table, int *size)
+{
+	s32 rval = 0;
+
+	switch (id) {
+	/* FM_TX class controls */
+	case V4L2_CID_RDS_TX_PI:
+		*property = SI4713_TX_RDS_PI;
+		*mul = 1;
+		*shadow = &sdev->rds_info.pi;
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
+		*property = SI4713_TX_ACOMP_THRESHOLD;
+		*mul = 1;
+		*shadow = &sdev->acomp_info.threshold;
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_GAIN:
+		*property = SI4713_TX_ACOMP_GAIN;
+		*mul = 1;
+		*shadow = &sdev->acomp_info.gain;
+		break;
+	case V4L2_CID_PILOT_TONE_FREQUENCY:
+		*property = SI4713_TX_PILOT_FREQUENCY;
+		*mul = 1;
+		*shadow = &sdev->pilot_info.frequency;
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
+		*property = SI4713_TX_ACOMP_ATTACK_TIME;
+		*mul = ATTACK_TIME_UNIT;
+		*shadow = &sdev->acomp_info.attack_time;
+		break;
+	case V4L2_CID_PILOT_TONE_DEVIATION:
+		*property = SI4713_TX_PILOT_DEVIATION;
+		*mul = 10;
+		*shadow = &sdev->pilot_info.deviation;
+		break;
+	case V4L2_CID_AUDIO_LIMITER_DEVIATION:
+		*property = SI4713_TX_AUDIO_DEVIATION;
+		*mul = 10;
+		*shadow = &sdev->limiter_info.deviation;
+		break;
+	case V4L2_CID_RDS_TX_DEVIATION:
+		*property = SI4713_TX_RDS_DEVIATION;
+		*mul = 1;
+		*shadow = &sdev->rds_info.deviation;
+		break;
+
+	case V4L2_CID_RDS_TX_PTY:
+		*property = SI4713_TX_RDS_PS_MISC;
+		*bit = 5;
+		*mask = 0x1F << 5;
+		*shadow = &sdev->rds_info.pty;
+		break;
+	case V4L2_CID_AUDIO_LIMITER_ENABLED:
+		*property = SI4713_TX_ACOMP_ENABLE;
+		*bit = 1;
+		*mask = 1 << 1;
+		*shadow = &sdev->limiter_info.enabled;
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
+		*property = SI4713_TX_ACOMP_ENABLE;
+		*bit = 0;
+		*mask = 1 << 0;
+		*shadow = &sdev->acomp_info.enabled;
+		break;
+	case V4L2_CID_PILOT_TONE_ENABLED:
+		*property = SI4713_TX_COMPONENT_ENABLE;
+		*bit = 0;
+		*mask = 1 << 0;
+		*shadow = &sdev->pilot_info.enabled;
+		break;
+
+	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
+		*property = SI4713_TX_LIMITER_RELEASE_TIME;
+		*table = limiter_times;
+		*size = ARRAY_SIZE(limiter_times);
+		*shadow = &sdev->limiter_info.release_time;
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
+		*property = SI4713_TX_ACOMP_RELEASE_TIME;
+		*table = acomp_rtimes;
+		*size = ARRAY_SIZE(acomp_rtimes);
+		*shadow = &sdev->acomp_info.release_time;
+		break;
+	case V4L2_CID_TUNE_PREEMPHASIS:
+		*property = SI4713_TX_PREEMPHASIS;
+		*table = preemphasis_values;
+		*size = ARRAY_SIZE(preemphasis_values);
+		*shadow = &sdev->preemphasis;
+		break;
+
+	default:
+		rval = -EINVAL;
+	};
+
+	return rval;
+}
+
+static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
+
+/* write string property */
+static int si4713_write_econtrol_string(struct si4713_device *sdev,
+				struct v4l2_ext_control *control)
+{
+	struct v4l2_queryctrl vqc;
+	int len;
+	s32 rval = 0;
+
+	vqc.id = control->id;
+	rval = si4713_queryctrl(&sdev->sd, &vqc);
+	if (rval < 0)
+		goto exit;
+
+	switch (control->id) {
+	case V4L2_CID_RDS_TX_PS_NAME: {
+		char ps_name[MAX_RDS_PS_NAME + 1];
+
+		len = control->size - 1;
+		if (len > MAX_RDS_PS_NAME) {
+			rval = -ERANGE;
+			goto exit;
+		}
+		rval = copy_from_user(ps_name, control->string, len);
+		if (rval < 0)
+			goto exit;
+		ps_name[len] = '\0';
+
+		if (strlen(ps_name) % vqc.step) {
+			rval = -ERANGE;
+			goto exit;
+		}
+
+		rval = si4713_set_rds_ps_name(sdev, ps_name);
+	}
+		break;
+
+	case V4L2_CID_RDS_TX_RADIO_TEXT: {
+		char radio_text[MAX_RDS_RADIO_TEXT + 1];
+
+		len = control->size - 1;
+		if (len > MAX_RDS_RADIO_TEXT) {
+			rval = -ERANGE;
+			goto exit;
+		}
+		rval = copy_from_user(radio_text, control->string, len);
+		if (rval < 0)
+			goto exit;
+		radio_text[len] = '\0';
+
+		if (strlen(radio_text) % vqc.step) {
+			rval = -ERANGE;
+			goto exit;
+		}
+
+		rval = si4713_set_rds_radio_text(sdev, radio_text);
+	}
+		break;
+
+	default:
+		rval = -EINVAL;
+		break;
+	};
+
+exit:
+	return rval;
+}
+
+static int validate_range(struct v4l2_subdev *sd,
+					struct v4l2_ext_control *control)
+{
+	struct v4l2_queryctrl vqc;
+	int rval;
+
+	vqc.id = control->id;
+	rval = si4713_queryctrl(sd, &vqc);
+	if (rval < 0)
+		goto exit;
+
+	if (control->value < vqc.minimum || control->value > vqc.maximum)
+		rval = -ERANGE;
+
+exit:
+	return rval;
+}
+
+/* properties which use tx_tune_power*/
+static int si4713_write_econtrol_tune(struct si4713_device *sdev,
+				struct v4l2_ext_control *control)
+{
+	s32 rval = 0;
+	u8 power, antcap;
+
+	rval = validate_range(&sdev->sd, control);
+	if (rval < 0)
+		goto exit;
+
+	mutex_lock(&sdev->mutex);
+
+	switch (control->id) {
+	case V4L2_CID_TUNE_POWER_LEVEL:
+		power = control->value;
+		antcap = sdev->antenna_capacitor;
+		break;
+	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+		power = sdev->power_level;
+		antcap = control->value;
+		break;
+	default:
+		rval = -EINVAL;
+		goto unlock;
+	};
+
+	if (sdev->power_state)
+		rval = si4713_tx_tune_power(sdev, power, antcap);
+
+	if (rval == 0) {
+		sdev->power_level = power;
+		sdev->antenna_capacitor = antcap;
+	}
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+exit:
+	return rval;
+}
+
+static int si4713_write_econtrol_integers(struct si4713_device *sdev,
+					struct v4l2_ext_control *control)
+{
+	s32 rval;
+	u32 *shadow = NULL, val = 0;
+	s32 bit = 0, mask = 0;
+	u16 property = 0;
+	int mul = 0;
+	unsigned long *table = NULL;
+	int size = 0;
+
+	rval = validate_range(&sdev->sd, control);
+	if (rval < 0)
+		goto exit;
+
+	rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit,
+			&mask, &property, &mul, &table, &size);
+	if (rval < 0)
+		goto exit;
+
+	val = control->value;
+	if (mul) {
+		val = control->value / mul;
+	} else if (table) {
+		rval = usecs_to_dev(control->value, table, size);
+		if (rval < 0)
+			goto exit;
+		val = rval;
+		rval = 0;
+	}
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		if (mask) {
+			rval = si4713_read_property(sdev, property, &val);
+			if (rval < 0)
+				goto unlock;
+			val = set_bits(val, control->value, bit, mask);
+		}
+
+		rval = si4713_write_property(sdev, property, val);
+		if (rval < 0)
+			goto unlock;
+		if (mask)
+			val = control->value;
+	}
+
+	if (mul) {
+		*shadow = val * mul;
+	} else if (table) {
+		rval = dev_to_usecs(val, table, size);
+		if (rval < 0)
+			goto unlock;
+		*shadow = rval;
+		rval = 0;
+	} else {
+		*shadow = val;
+	}
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+exit:
+	return rval;
+}
+
+static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f);
+static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *);
+/*
+ * si4713_setup - Sets the device up with current configuration.
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_setup(struct si4713_device *sdev)
+{
+	struct v4l2_ext_control ctrl;
+	struct v4l2_frequency f;
+	struct v4l2_modulator vm;
+	struct si4713_device *tmp;
+	int rval = 0;
+
+	tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	/* Get a local copy to avoid race */
+	mutex_lock(&sdev->mutex);
+	memcpy(tmp, sdev, sizeof(*sdev));
+	mutex_unlock(&sdev->mutex);
+
+	ctrl.id = V4L2_CID_RDS_TX_PI;
+	ctrl.value = tmp->rds_info.pi;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_COMPRESSION_THRESHOLD;
+	ctrl.value = tmp->acomp_info.threshold;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_COMPRESSION_GAIN;
+	ctrl.value = tmp->acomp_info.gain;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_PILOT_TONE_FREQUENCY;
+	ctrl.value = tmp->pilot_info.frequency;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME;
+	ctrl.value = tmp->acomp_info.attack_time;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_PILOT_TONE_DEVIATION;
+	ctrl.value = tmp->pilot_info.deviation;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_LIMITER_DEVIATION;
+	ctrl.value = tmp->limiter_info.deviation;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_RDS_TX_DEVIATION;
+	ctrl.value = tmp->rds_info.deviation;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_RDS_TX_PTY;
+	ctrl.value = tmp->rds_info.pty;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_LIMITER_ENABLED;
+	ctrl.value = tmp->limiter_info.enabled;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ENABLED;
+	ctrl.value = tmp->acomp_info.enabled;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_PILOT_TONE_ENABLED;
+	ctrl.value = tmp->pilot_info.enabled;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_LIMITER_RELEASE_TIME;
+	ctrl.value = tmp->limiter_info.release_time;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME;
+	ctrl.value = tmp->acomp_info.release_time;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_TUNE_PREEMPHASIS;
+	ctrl.value = tmp->preemphasis;
+	rval |= si4713_write_econtrol_integers(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_RDS_TX_PS_NAME;
+	rval |= si4713_set_rds_ps_name(sdev, tmp->rds_info.ps_name);
+
+	ctrl.id = V4L2_CID_RDS_TX_RADIO_TEXT;
+	rval |= si4713_set_rds_radio_text(sdev, tmp->rds_info.radio_text);
+
+	/* Device procedure needs to set frequency first */
+	f.frequency = tmp->frequency ? tmp->frequency : DEFAULT_FREQUENCY;
+	f.frequency = si4713_to_v4l2(f.frequency);
+	rval |= si4713_s_frequency(&sdev->sd, &f);
+
+	ctrl.id = V4L2_CID_TUNE_POWER_LEVEL;
+	ctrl.value = tmp->power_level;
+	rval |= si4713_write_econtrol_tune(sdev, &ctrl);
+
+	ctrl.id = V4L2_CID_TUNE_ANTENNA_CAPACITOR;
+	ctrl.value = tmp->antenna_capacitor;
+	rval |= si4713_write_econtrol_tune(sdev, &ctrl);
+
+	vm.index = 0;
+	if (tmp->stereo)
+		vm.txsubchans = V4L2_TUNER_SUB_STEREO;
+	else
+		vm.txsubchans = V4L2_TUNER_SUB_MONO;
+	if (tmp->rds_info.enabled)
+		vm.txsubchans |= V4L2_TUNER_SUB_RDS;
+	si4713_s_modulator(&sdev->sd, &vm);
+
+	kfree(tmp);
+
+	return rval;
+}
+
+/*
+ * si4713_initialize - Sets the device up with default configuration.
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_initialize(struct si4713_device *sdev)
+{
+	int rval;
+
+	rval = si4713_set_power_state(sdev, POWER_ON);
+	if (rval < 0)
+		goto exit;
+
+	rval = si4713_checkrev(sdev);
+	if (rval < 0)
+		goto exit;
+
+	rval = si4713_set_power_state(sdev, POWER_OFF);
+	if (rval < 0)
+		goto exit;
+
+	mutex_lock(&sdev->mutex);
+
+	sdev->rds_info.pi = DEFAULT_RDS_PI;
+	sdev->rds_info.pty = DEFAULT_RDS_PTY;
+	sdev->rds_info.deviation = DEFAULT_RDS_DEVIATION;
+	strlcpy(sdev->rds_info.ps_name, DEFAULT_RDS_PS_NAME, MAX_RDS_PS_NAME);
+	strlcpy(sdev->rds_info.radio_text, DEFAULT_RDS_RADIO_TEXT,
+							MAX_RDS_RADIO_TEXT);
+	sdev->rds_info.enabled = 1;
+
+	sdev->limiter_info.release_time = DEFAULT_LIMITER_RTIME;
+	sdev->limiter_info.deviation = DEFAULT_LIMITER_DEV;
+	sdev->limiter_info.enabled = 1;
+
+	sdev->pilot_info.deviation = DEFAULT_PILOT_DEVIATION;
+	sdev->pilot_info.frequency = DEFAULT_PILOT_FREQUENCY;
+	sdev->pilot_info.enabled = 1;
+
+	sdev->acomp_info.release_time = DEFAULT_ACOMP_RTIME;
+	sdev->acomp_info.attack_time = DEFAULT_ACOMP_ATIME;
+	sdev->acomp_info.threshold = DEFAULT_ACOMP_THRESHOLD;
+	sdev->acomp_info.gain = DEFAULT_ACOMP_GAIN;
+	sdev->acomp_info.enabled = 1;
+
+	sdev->frequency = DEFAULT_FREQUENCY;
+	sdev->preemphasis = DEFAULT_PREEMPHASIS;
+	sdev->mute = DEFAULT_MUTE;
+	sdev->power_level = DEFAULT_POWER_LEVEL;
+	sdev->antenna_capacitor = 0;
+	sdev->stereo = 1;
+	sdev->tune_rnl = DEFAULT_TUNE_RNL;
+
+	mutex_unlock(&sdev->mutex);
+
+exit:
+	return rval;
+}
+
+/* read string property */
+static int si4713_read_econtrol_string(struct si4713_device *sdev,
+				struct v4l2_ext_control *control)
+{
+	s32 rval = 0;
+
+	switch (control->id) {
+	case V4L2_CID_RDS_TX_PS_NAME:
+		if (strlen(sdev->rds_info.ps_name) + 1 > control->size) {
+			control->size = MAX_RDS_PS_NAME + 1;
+			rval = -ENOSPC;
+			goto exit;
+		}
+		rval = copy_to_user(control->string, sdev->rds_info.ps_name,
+					strlen(sdev->rds_info.ps_name) + 1);
+		break;
+
+	case V4L2_CID_RDS_TX_RADIO_TEXT:
+		if (strlen(sdev->rds_info.radio_text) + 1 > control->size) {
+			control->size = MAX_RDS_RADIO_TEXT + 1;
+			rval = -ENOSPC;
+			goto exit;
+		}
+		rval = copy_to_user(control->string, sdev->rds_info.radio_text,
+					strlen(sdev->rds_info.radio_text) + 1);
+		break;
+
+	default:
+		rval = -EINVAL;
+		break;
+	};
+
+exit:
+	return rval;
+}
+
+/*
+ * si4713_update_tune_status - update properties from tx_tune_status
+ * command. Must be called with sdev->mutex held.
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_update_tune_status(struct si4713_device *sdev)
+{
+	int rval;
+	u16 f = 0;
+	u8 p = 0, a = 0, n = 0;
+
+	rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n);
+
+	if (rval < 0)
+		goto exit;
+
+	sdev->power_level = p;
+	sdev->antenna_capacitor = a;
+	sdev->tune_rnl = n;
+
+exit:
+	return rval;
+}
+
+/* properties which use tx_tune_status */
+static int si4713_read_econtrol_tune(struct si4713_device *sdev,
+				struct v4l2_ext_control *control)
+{
+	s32 rval = 0;
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		rval = si4713_update_tune_status(sdev);
+		if (rval < 0)
+			goto unlock;
+	}
+
+	switch (control->id) {
+	case V4L2_CID_TUNE_POWER_LEVEL:
+		control->value = sdev->power_level;
+		break;
+	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+		control->value = sdev->antenna_capacitor;
+		break;
+	default:
+		rval = -EINVAL;
+	};
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+static int si4713_read_econtrol_integers(struct si4713_device *sdev,
+				struct v4l2_ext_control *control)
+{
+	s32 rval;
+	u32 *shadow = NULL, val = 0;
+	s32 bit = 0, mask = 0;
+	u16 property = 0;
+	int mul = 0;
+	unsigned long *table = NULL;
+	int size = 0;
+
+	rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit,
+			&mask, &property, &mul, &table, &size);
+	if (rval < 0)
+		goto exit;
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		rval = si4713_read_property(sdev, property, &val);
+		if (rval < 0)
+			goto unlock;
+
+		/* Keep negative values for threshold */
+		if (control->id == V4L2_CID_AUDIO_COMPRESSION_THRESHOLD)
+			*shadow = (s16)val;
+		else if (mask)
+			*shadow = get_status_bit(val, bit, mask);
+		else if (mul)
+			*shadow = val * mul;
+		else
+			*shadow = dev_to_usecs(val, table, size);
+	}
+
+	control->value = *shadow;
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+exit:
+	return rval;
+}
+
+/*
+ * Video4Linux Subdev Interface
+ */
+/* si4713_s_ext_ctrls - set extended controls value */
+static int si4713_s_ext_ctrls(struct v4l2_subdev *sd,
+				struct v4l2_ext_controls *ctrls)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int i;
+
+	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
+		return -EINVAL;
+
+	for (i = 0; i < ctrls->count; i++) {
+		int err;
+
+		switch ((ctrls->controls + i)->id) {
+		case V4L2_CID_RDS_TX_PS_NAME:
+		case V4L2_CID_RDS_TX_RADIO_TEXT:
+			err = si4713_write_econtrol_string(sdev,
+							ctrls->controls + i);
+			break;
+		case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+		case V4L2_CID_TUNE_POWER_LEVEL:
+			err = si4713_write_econtrol_tune(sdev,
+							ctrls->controls + i);
+			break;
+		default:
+			err = si4713_write_econtrol_integers(sdev,
+							ctrls->controls + i);
+		}
+
+		if (err < 0) {
+			ctrls->error_idx = i;
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+/* si4713_g_ext_ctrls - get extended controls value */
+static int si4713_g_ext_ctrls(struct v4l2_subdev *sd,
+				struct v4l2_ext_controls *ctrls)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int i;
+
+	if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
+		return -EINVAL;
+
+	for (i = 0; i < ctrls->count; i++) {
+		int err;
+
+		switch ((ctrls->controls + i)->id) {
+		case V4L2_CID_RDS_TX_PS_NAME:
+		case V4L2_CID_RDS_TX_RADIO_TEXT:
+			err = si4713_read_econtrol_string(sdev,
+							ctrls->controls + i);
+			break;
+		case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+		case V4L2_CID_TUNE_POWER_LEVEL:
+			err = si4713_read_econtrol_tune(sdev,
+							ctrls->controls + i);
+			break;
+		default:
+			err = si4713_read_econtrol_integers(sdev,
+							ctrls->controls + i);
+		}
+
+		if (err < 0) {
+			ctrls->error_idx = i;
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+/* si4713_queryctrl - enumerate control items */
+static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
+{
+	int rval = 0;
+
+	switch (qc->id) {
+	/* User class controls */
+	case V4L2_CID_AUDIO_MUTE:
+		rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, DEFAULT_MUTE);
+		break;
+	/* FM_TX class controls */
+	case V4L2_CID_RDS_TX_PI:
+		rval = v4l2_ctrl_query_fill(qc, 0, 0xFFFF, 1, DEFAULT_RDS_PI);
+		break;
+	case V4L2_CID_RDS_TX_PTY:
+		rval = v4l2_ctrl_query_fill(qc, 0, 31, 1, DEFAULT_RDS_PTY);
+		break;
+	case V4L2_CID_RDS_TX_DEVIATION:
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_DEVIATION,
+						10, DEFAULT_RDS_DEVIATION);
+		break;
+	case V4L2_CID_RDS_TX_PS_NAME:
+		/*
+		 * Report step as 8. From RDS spec, psname
+		 * should be 8. But there are receivers which scroll strings
+		 * sized as 8xN.
+		 */
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_PS_NAME, 8, 0);
+		break;
+	case V4L2_CID_RDS_TX_RADIO_TEXT:
+		/*
+		 * Report step as 32 (2A block). From RDS spec,
+		 * radio text should be 32 for 2A block. But there are receivers
+		 * which scroll strings sized as 32xN. Setting default to 32.
+		 */
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_RADIO_TEXT, 32, 0);
+		break;
+
+	case V4L2_CID_AUDIO_LIMITER_ENABLED:
+		rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+		break;
+	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
+		rval = v4l2_ctrl_query_fill(qc, 250, MAX_LIMITER_RELEASE_TIME,
+						50, DEFAULT_LIMITER_RTIME);
+		break;
+	case V4L2_CID_AUDIO_LIMITER_DEVIATION:
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_LIMITER_DEVIATION,
+						10, DEFAULT_LIMITER_DEV);
+		break;
+
+	case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
+		rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_GAIN:
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_GAIN, 1,
+						DEFAULT_ACOMP_GAIN);
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
+		rval = v4l2_ctrl_query_fill(qc, MIN_ACOMP_THRESHOLD,
+						MAX_ACOMP_THRESHOLD, 1,
+						DEFAULT_ACOMP_THRESHOLD);
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_ATTACK_TIME,
+						500, DEFAULT_ACOMP_ATIME);
+		break;
+	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
+		rval = v4l2_ctrl_query_fill(qc, 100000, MAX_ACOMP_RELEASE_TIME,
+						100000, DEFAULT_ACOMP_RTIME);
+		break;
+
+	case V4L2_CID_PILOT_TONE_ENABLED:
+		rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+		break;
+	case V4L2_CID_PILOT_TONE_DEVIATION:
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_DEVIATION,
+						10, DEFAULT_PILOT_DEVIATION);
+		break;
+	case V4L2_CID_PILOT_TONE_FREQUENCY:
+		rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_FREQUENCY,
+						1, DEFAULT_PILOT_FREQUENCY);
+		break;
+
+	case V4L2_CID_TUNE_PREEMPHASIS:
+		rval = v4l2_ctrl_query_fill(qc, V4L2_PREEMPHASIS_DISABLED,
+						V4L2_PREEMPHASIS_75_uS, 1,
+						V4L2_PREEMPHASIS_50_uS);
+		break;
+	case V4L2_CID_TUNE_POWER_LEVEL:
+		rval = v4l2_ctrl_query_fill(qc, 0, 120, 1, DEFAULT_POWER_LEVEL);
+		break;
+	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+		rval = v4l2_ctrl_query_fill(qc, 0, 191, 1, 0);
+		break;
+	default:
+		rval = -EINVAL;
+		break;
+	};
+
+	return rval;
+}
+
+/* si4713_g_ctrl - get the value of a control */
+static int si4713_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int rval = 0;
+
+	if (!sdev)
+		return -ENODEV;
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		rval = si4713_read_property(sdev, SI4713_TX_LINE_INPUT_MUTE,
+						&sdev->mute);
+
+		if (rval < 0)
+			goto unlock;
+	}
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		ctrl->value = get_mute(sdev->mute);
+		break;
+	}
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+/* si4713_s_ctrl - set the value of a control */
+static int si4713_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int rval = 0;
+
+	if (!sdev)
+		return -ENODEV;
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		if (ctrl->value) {
+			rval = si4713_set_mute(sdev, ctrl->value);
+			if (rval < 0)
+				goto exit;
+
+			rval = si4713_set_power_state(sdev, POWER_DOWN);
+		} else {
+			rval = si4713_set_power_state(sdev, POWER_UP);
+			if (rval < 0)
+				goto exit;
+
+			rval = si4713_setup(sdev);
+			if (rval < 0)
+				goto exit;
+
+			rval = si4713_set_mute(sdev, ctrl->value);
+		}
+		break;
+	}
+
+exit:
+	return rval;
+}
+
+/* si4713_ioctl - deal with private ioctls (only rnl for now) */
+long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	struct si4713_rnl *rnl = arg;
+	u16 frequency;
+	int rval = 0;
+
+	if (!arg)
+		return -EINVAL;
+
+	mutex_lock(&sdev->mutex);
+	switch (cmd) {
+	case SI4713_IOC_MEASURE_RNL:
+		frequency = v4l2_to_si4713(rnl->frequency);
+
+		if (sdev->power_state) {
+			/* Set desired measurement frequency */
+			rval = si4713_tx_tune_measure(sdev, frequency, 0);
+			if (rval < 0)
+				goto unlock;
+			/* get results from tune status */
+			rval = si4713_update_tune_status(sdev);
+			if (rval < 0)
+				goto unlock;
+		}
+		rnl->rnl = sdev->tune_rnl;
+		break;
+
+	default:
+		/* nothing */
+		rval = -ENOIOCTLCMD;
+	}
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = {
+	.queryctrl	= si4713_queryctrl,
+	.g_ext_ctrls	= si4713_g_ext_ctrls,
+	.s_ext_ctrls	= si4713_s_ext_ctrls,
+	.g_ctrl		= si4713_g_ctrl,
+	.s_ctrl		= si4713_s_ctrl,
+	.ioctl		= si4713_ioctl,
+};
+
+/* si4713_g_modulator - get modulator attributes */
+static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int rval = 0;
+
+	if (!sdev) {
+		rval = -ENODEV;
+		goto exit;
+	}
+
+	if (vm->index > 0) {
+		rval = -EINVAL;
+		goto exit;
+	}
+
+	strncpy(vm->name, "FM Modulator", 32);
+	vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW |
+						V4L2_TUNER_CAP_RDS;
+
+	/* Report current frequency range limits */
+	vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW);
+	vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH);
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		u32 comp_en = 0;
+
+		rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE,
+						&comp_en);
+		if (rval < 0)
+			goto unlock;
+
+		sdev->stereo = get_status_bit(comp_en, 1, 1 << 1);
+		sdev->rds_info.enabled = get_status_bit(comp_en, 2, 1 << 2);
+	}
+
+	/* Report current audio mode: mono or stereo */
+	if (sdev->stereo)
+		vm->txsubchans = V4L2_TUNER_SUB_STEREO;
+	else
+		vm->txsubchans = V4L2_TUNER_SUB_MONO;
+
+	/* Report rds feature status */
+	if (sdev->rds_info.enabled)
+		vm->txsubchans |= V4L2_TUNER_SUB_RDS;
+	else
+		vm->txsubchans &= ~V4L2_TUNER_SUB_RDS;
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+exit:
+	return rval;
+}
+
+/* si4713_s_modulator - set modulator attributes */
+static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int rval = 0;
+	u16 stereo, rds;
+	u32 p;
+
+	if (!sdev)
+		return -ENODEV;
+
+	if (vm->index > 0)
+		return -EINVAL;
+
+	/* Set audio mode: mono or stereo */
+	if (vm->txsubchans & V4L2_TUNER_SUB_STEREO)
+		stereo = 1;
+	else if (vm->txsubchans & V4L2_TUNER_SUB_MONO)
+		stereo = 0;
+	else
+		return -EINVAL;
+
+	rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS);
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		rval = si4713_read_property(sdev,
+						SI4713_TX_COMPONENT_ENABLE, &p);
+		if (rval < 0)
+			goto unlock;
+
+		p = set_bits(p, stereo, 1, 1 << 1);
+		p = set_bits(p, rds, 2, 1 << 2);
+
+		rval = si4713_write_property(sdev,
+						SI4713_TX_COMPONENT_ENABLE, p);
+		if (rval < 0)
+			goto unlock;
+	}
+
+	sdev->stereo = stereo;
+	sdev->rds_info.enabled = rds;
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+/* si4713_g_frequency - get tuner or modulator radio frequency */
+static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int rval = 0;
+
+	f->type = V4L2_TUNER_RADIO;
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		u16 freq;
+		u8 p, a, n;
+
+		rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n);
+		if (rval < 0)
+			goto unlock;
+
+		sdev->frequency = freq;
+	}
+
+	f->frequency = si4713_to_v4l2(sdev->frequency);
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+/* si4713_s_frequency - set tuner or modulator radio frequency */
+static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
+{
+	struct si4713_device *sdev = to_si4713_device(sd);
+	int rval = 0;
+	u16 frequency = v4l2_to_si4713(f->frequency);
+
+	/* Check frequency range */
+	if (frequency < FREQ_RANGE_LOW || frequency > FREQ_RANGE_HIGH)
+		return -EDOM;
+
+	mutex_lock(&sdev->mutex);
+
+	if (sdev->power_state) {
+		rval = si4713_tx_tune_freq(sdev, frequency);
+		if (rval < 0)
+			goto unlock;
+		frequency = rval;
+		rval = 0;
+	}
+	sdev->frequency = frequency;
+	f->frequency = si4713_to_v4l2(frequency);
+
+unlock:
+	mutex_unlock(&sdev->mutex);
+	return rval;
+}
+
+static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = {
+	.g_frequency	= si4713_g_frequency,
+	.s_frequency	= si4713_s_frequency,
+	.g_modulator	= si4713_g_modulator,
+	.s_modulator	= si4713_s_modulator,
+};
+
+static const struct v4l2_subdev_ops si4713_subdev_ops = {
+	.core		= &si4713_subdev_core_ops,
+	.tuner		= &si4713_subdev_tuner_ops,
+};
+
+/*
+ * I2C driver interface
+ */
+/* si4713_probe - probe for the device */
+static int si4713_probe(struct i2c_client *client,
+					const struct i2c_device_id *id)
+{
+	struct si4713_device *sdev;
+	int rval;
+
+	sdev = kzalloc(sizeof *sdev, GFP_KERNEL);
+	if (!sdev) {
+		dev_err(&client->dev, "Failed to alloc video device.\n");
+		rval = -ENOMEM;
+		goto exit;
+	}
+
+	sdev->platform_data = client->dev.platform_data;
+	if (!sdev->platform_data) {
+		v4l2_err(&sdev->sd, "No platform data registered.\n");
+		rval = -ENODEV;
+		goto free_sdev;
+	}
+
+	v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops);
+
+	mutex_init(&sdev->mutex);
+	init_completion(&sdev->work);
+
+	if (client->irq) {
+		rval = request_irq(client->irq,
+			si4713_handler, IRQF_TRIGGER_FALLING | IRQF_DISABLED,
+			client->name, sdev);
+		if (rval < 0) {
+			v4l2_err(&sdev->sd, "Could not request IRQ\n");
+			goto free_sdev;
+		}
+		v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n");
+	} else {
+		v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n");
+	}
+
+	rval = si4713_initialize(sdev);
+	if (rval < 0) {
+		v4l2_err(&sdev->sd, "Failed to probe device information.\n");
+		goto free_irq;
+	}
+
+	return 0;
+
+free_irq:
+	if (client->irq)
+		free_irq(client->irq, sdev);
+free_sdev:
+	kfree(sdev);
+exit:
+	return rval;
+}
+
+/* si4713_remove - remove the device */
+static int si4713_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct si4713_device *sdev = to_si4713_device(sd);
+
+	if (sdev->power_state)
+		si4713_set_power_state(sdev, POWER_DOWN);
+
+	if (client->irq > 0)
+		free_irq(client->irq, sdev);
+
+	v4l2_device_unregister_subdev(sd);
+
+	kfree(sdev);
+
+	return 0;
+}
+
+/* si4713_i2c_driver - i2c driver interface */
+static const struct i2c_device_id si4713_id[] = {
+	{ "si4713" , 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, si4713_id);
+
+static struct i2c_driver si4713_i2c_driver = {
+	.driver		= {
+		.name	= "si4713",
+	},
+	.probe		= si4713_probe,
+	.remove         = si4713_remove,
+	.id_table       = si4713_id,
+};
+
+/* Module Interface */
+static int __init si4713_module_init(void)
+{
+	return i2c_add_driver(&si4713_i2c_driver);
+}
+
+static void __exit si4713_module_exit(void)
+{
+	i2c_del_driver(&si4713_i2c_driver);
+}
+
+module_init(si4713_module_init);
+module_exit(si4713_module_exit);
+
diff --git a/drivers/media/radio/si4713-i2c.h b/drivers/media/radio/si4713-i2c.h
new file mode 100644
index 00000000000..faf8cff124f
--- /dev/null
+++ b/drivers/media/radio/si4713-i2c.h
@@ -0,0 +1,237 @@
+/*
+ * drivers/media/radio/si4713-i2c.h
+ *
+ * Property and commands definitions for Si4713 radio transmitter chip.
+ *
+ * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT
+ * Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ *
+ */
+
+#ifndef SI4713_I2C_H
+#define SI4713_I2C_H
+
+#include <media/v4l2-subdev.h>
+#include <media/si4713.h>
+
+#define SI4713_PRODUCT_NUMBER		0x0D
+
+/* Command Timeouts */
+#define DEFAULT_TIMEOUT			500
+#define TIMEOUT_SET_PROPERTY		20
+#define TIMEOUT_TX_TUNE_POWER		30000
+#define TIMEOUT_TX_TUNE			110000
+#define TIMEOUT_POWER_UP		200000
+
+/*
+ * Command and its arguments definitions
+ */
+#define SI4713_PWUP_CTSIEN		(1<<7)
+#define SI4713_PWUP_GPO2OEN		(1<<6)
+#define SI4713_PWUP_PATCH		(1<<5)
+#define SI4713_PWUP_XOSCEN		(1<<4)
+#define SI4713_PWUP_FUNC_TX		0x02
+#define SI4713_PWUP_FUNC_PATCH		0x0F
+#define SI4713_PWUP_OPMOD_ANALOG	0x50
+#define SI4713_PWUP_OPMOD_DIGITAL	0x0F
+#define SI4713_PWUP_NARGS		2
+#define SI4713_PWUP_NRESP		1
+#define SI4713_CMD_POWER_UP		0x01
+
+#define SI4713_GETREV_NRESP		9
+#define SI4713_CMD_GET_REV		0x10
+
+#define SI4713_PWDN_NRESP		1
+#define SI4713_CMD_POWER_DOWN		0x11
+
+#define SI4713_SET_PROP_NARGS		5
+#define SI4713_SET_PROP_NRESP		1
+#define SI4713_CMD_SET_PROPERTY		0x12
+
+#define SI4713_GET_PROP_NARGS		3
+#define SI4713_GET_PROP_NRESP		4
+#define SI4713_CMD_GET_PROPERTY		0x13
+
+#define SI4713_GET_STATUS_NRESP		1
+#define SI4713_CMD_GET_INT_STATUS	0x14
+
+#define SI4713_CMD_PATCH_ARGS		0x15
+#define SI4713_CMD_PATCH_DATA		0x16
+
+#define SI4713_MAX_FREQ			10800
+#define SI4713_MIN_FREQ			7600
+#define SI4713_TXFREQ_NARGS		3
+#define SI4713_TXFREQ_NRESP		1
+#define SI4713_CMD_TX_TUNE_FREQ		0x30
+
+#define SI4713_MAX_POWER		120
+#define SI4713_MIN_POWER		88
+#define SI4713_MAX_ANTCAP		191
+#define SI4713_MIN_ANTCAP		0
+#define SI4713_TXPWR_NARGS		4
+#define SI4713_TXPWR_NRESP		1
+#define SI4713_CMD_TX_TUNE_POWER	0x31
+
+#define SI4713_TXMEA_NARGS		4
+#define SI4713_TXMEA_NRESP		1
+#define SI4713_CMD_TX_TUNE_MEASURE	0x32
+
+#define SI4713_INTACK_MASK		0x01
+#define SI4713_TXSTATUS_NARGS		1
+#define SI4713_TXSTATUS_NRESP		8
+#define SI4713_CMD_TX_TUNE_STATUS	0x33
+
+#define SI4713_OVERMOD_BIT		(1 << 2)
+#define SI4713_IALH_BIT			(1 << 1)
+#define SI4713_IALL_BIT			(1 << 0)
+#define SI4713_ASQSTATUS_NARGS		1
+#define SI4713_ASQSTATUS_NRESP		5
+#define SI4713_CMD_TX_ASQ_STATUS	0x34
+
+#define SI4713_RDSBUFF_MODE_MASK	0x87
+#define SI4713_RDSBUFF_NARGS		7
+#define SI4713_RDSBUFF_NRESP		6
+#define SI4713_CMD_TX_RDS_BUFF		0x35
+
+#define SI4713_RDSPS_PSID_MASK		0x1F
+#define SI4713_RDSPS_NARGS		5
+#define SI4713_RDSPS_NRESP		1
+#define SI4713_CMD_TX_RDS_PS		0x36
+
+#define SI4713_CMD_GPO_CTL		0x80
+#define SI4713_CMD_GPO_SET		0x81
+
+/*
+ * Bits from status response
+ */
+#define SI4713_CTS			(1<<7)
+#define SI4713_ERR			(1<<6)
+#define SI4713_RDS_INT			(1<<2)
+#define SI4713_ASQ_INT			(1<<1)
+#define SI4713_STC_INT			(1<<0)
+
+/*
+ * Property definitions
+ */
+#define SI4713_GPO_IEN			0x0001
+#define SI4713_DIG_INPUT_FORMAT		0x0101
+#define SI4713_DIG_INPUT_SAMPLE_RATE	0x0103
+#define SI4713_REFCLK_FREQ		0x0201
+#define SI4713_REFCLK_PRESCALE		0x0202
+#define SI4713_TX_COMPONENT_ENABLE	0x2100
+#define SI4713_TX_AUDIO_DEVIATION	0x2101
+#define SI4713_TX_PILOT_DEVIATION	0x2102
+#define SI4713_TX_RDS_DEVIATION		0x2103
+#define SI4713_TX_LINE_INPUT_LEVEL	0x2104
+#define SI4713_TX_LINE_INPUT_MUTE	0x2105
+#define SI4713_TX_PREEMPHASIS		0x2106
+#define SI4713_TX_PILOT_FREQUENCY	0x2107
+#define SI4713_TX_ACOMP_ENABLE		0x2200
+#define SI4713_TX_ACOMP_THRESHOLD	0x2201
+#define SI4713_TX_ACOMP_ATTACK_TIME	0x2202
+#define SI4713_TX_ACOMP_RELEASE_TIME	0x2203
+#define SI4713_TX_ACOMP_GAIN		0x2204
+#define SI4713_TX_LIMITER_RELEASE_TIME	0x2205
+#define SI4713_TX_ASQ_INTERRUPT_SOURCE	0x2300
+#define SI4713_TX_ASQ_LEVEL_LOW		0x2301
+#define SI4713_TX_ASQ_DURATION_LOW	0x2302
+#define SI4713_TX_ASQ_LEVEL_HIGH	0x2303
+#define SI4713_TX_ASQ_DURATION_HIGH	0x2304
+#define SI4713_TX_RDS_INTERRUPT_SOURCE	0x2C00
+#define SI4713_TX_RDS_PI		0x2C01
+#define SI4713_TX_RDS_PS_MIX		0x2C02
+#define SI4713_TX_RDS_PS_MISC		0x2C03
+#define SI4713_TX_RDS_PS_REPEAT_COUNT	0x2C04
+#define SI4713_TX_RDS_PS_MESSAGE_COUNT	0x2C05
+#define SI4713_TX_RDS_PS_AF		0x2C06
+#define SI4713_TX_RDS_FIFO_SIZE		0x2C07
+
+#define PREEMPHASIS_USA			75
+#define PREEMPHASIS_EU			50
+#define PREEMPHASIS_DISABLED		0
+#define FMPE_USA			0x00
+#define FMPE_EU				0x01
+#define FMPE_DISABLED			0x02
+
+#define POWER_UP			0x01
+#define POWER_DOWN			0x00
+
+struct rds_info {
+	u32 pi;
+#define MAX_RDS_PTY			31
+	u32 pty;
+#define MAX_RDS_DEVIATION		90000
+	u32 deviation;
+/*
+ * PSNAME is known to be defined as 8 character sized (RDS Spec).
+ * However, there is receivers which scroll PSNAME 8xN sized.
+ */
+#define MAX_RDS_PS_NAME			96
+	u8 ps_name[MAX_RDS_PS_NAME + 1];
+/*
+ * MAX_RDS_RADIO_TEXT is known to be defined as 32 (2A group) or 64 (2B group)
+ * character sized (RDS Spec).
+ * However, there is receivers which scroll them as well.
+ */
+#define MAX_RDS_RADIO_TEXT		384
+	u8 radio_text[MAX_RDS_RADIO_TEXT + 1];
+	u32 enabled;
+};
+
+struct limiter_info {
+#define MAX_LIMITER_RELEASE_TIME	102390
+	u32 release_time;
+#define MAX_LIMITER_DEVIATION		90000
+	u32 deviation;
+	u32 enabled;
+};
+
+struct pilot_info {
+#define MAX_PILOT_DEVIATION		90000
+	u32 deviation;
+#define MAX_PILOT_FREQUENCY		19000
+	u32 frequency;
+	u32 enabled;
+};
+
+struct acomp_info {
+#define MAX_ACOMP_RELEASE_TIME		1000000
+	u32 release_time;
+#define MAX_ACOMP_ATTACK_TIME		5000
+	u32 attack_time;
+#define MAX_ACOMP_THRESHOLD		0
+#define MIN_ACOMP_THRESHOLD		(-40)
+	s32 threshold;
+#define MAX_ACOMP_GAIN			20
+	u32 gain;
+	u32 enabled;
+};
+
+/*
+ * si4713_device - private data
+ */
+struct si4713_device {
+	/* v4l2_subdev and i2c reference (v4l2_subdev priv data) */
+	struct v4l2_subdev sd;
+	/* private data structures */
+	struct mutex mutex;
+	struct completion work;
+	struct si4713_platform_data *platform_data;
+	struct rds_info rds_info;
+	struct limiter_info limiter_info;
+	struct pilot_info pilot_info;
+	struct acomp_info acomp_info;
+	u32 frequency;
+	u32 preemphasis;
+	u32 mute;
+	u32 power_level;
+	u32 power_state;
+	u32 antenna_capacitor;
+	u32 stereo;
+	u32 tune_rnl;
+};
+#endif /* ifndef SI4713_I2C_H */