[IrDA]: Kingsun KS-959 IrDA USB driver (4b6aa599) · Commits · 戴 / test

This dongle does not follow the usb-irda specification, so it needs its own special driver. First, it uses control URBs for data transfer, instead of bulk or interrupt transfers; the only interrupt endpoint exposed seems to be a dummy to prevent the interface from being rejected. Second, it uses obfuscation and padding at the USB traffic level, for no apparent reason other than to make reverse engineering harder (full details on obfuscation in comments at beginning of source). Although it is advertised as a "4 Mbps FIR dongle", it apparently loses packets at speeds greater than 57600 bps. On plugin, this dongle reports vendor and device IDs: 0x07d0:0x4959 . The Windows driver that is used normally to control this dongle has a filename of KS-959.SYS . Signed-off-by:

Alex Villacís Lasso <a_villacis@palosanto.com> Signed-off-by:

Samuel Ortiz <samuel@sortiz.org> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/irda/Kconfig

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Original line number	Diff line number	Diff line
		@@ -176,6 +176,20 @@ config KSDAZZLE_DONGLE
		To compile it as a module, choose M here: the module will be called
		ksdazzle-sir.

		config KS959_DONGLE
		tristate "KingSun KS-959 IrDA-USB dongle (EXPERIMENTAL)"
		depends on IRDA && USB && EXPERIMENTAL
		help
		Say Y or M here if you want to build support for the KingSun KS-959
		IrDA-USB bridge device driver.

		This USB bridge does not conform to the IrDA-USB device class
		specification, and therefore needs its own specific driver. This
		dongle supports SIR speeds only (9600 through 57600 bps).

		To compile it as a module, choose M here: the module will be called
		ks959-sir.

		comment "Old SIR device drivers"

		config IRPORT_SIR

drivers/net/irda/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -48,6 +48,7 @@ obj-$(CONFIG_TOIM3232_DONGLE) += toim3232-sir.o
		obj-$(CONFIG_EP7211_DONGLE) += ep7211-sir.o
		obj-$(CONFIG_KINGSUN_DONGLE) += kingsun-sir.o
		obj-$(CONFIG_KSDAZZLE_DONGLE) += ksdazzle-sir.o
		obj-$(CONFIG_KS959_DONGLE) += ks959-sir.o

		# The SIR helper module
		sir-dev-objs := sir_dev.o sir_dongle.o

drivers/net/irda/ks959-sir.c

0 → 100644

+939 −0

File added.

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