V4L/DVB (12413): radio-si470x: separate common and usb code
This patch is a preceding work to add the i2c interface of si470x.
The si470x directory includes a common file and usb specific file and
header file.
The part unrelated with usb interface and i2c interface exists in
radio-si470x-common.c file, and The usb specific part exists in
radio-si470x-usb.c file.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
[tobias.lorenz@gmx.net: Small changes, due to new include "linux/smp_lock.h"]
Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/radio/si470x/Kconfig b/drivers/media/radio/si470x/Kconfig
new file mode 100644
index 0000000..20d05c0
--- /dev/null
+++ b/drivers/media/radio/si470x/Kconfig
@@ -0,0 +1,24 @@
+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.