aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/serial/ch341.c
AgeCommit message (Collapse)Author
2009-06-11tty: Bring the usb tty port structure into more useAlan Cox
This allows us to clean stuff up, but is probably also going to cause some app breakage with buggy apps as we now implement proper POSIX behaviour for USB ports matching all the other ports. This does also mean other apps that break on USB will now work properly. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-24USB: ch341 serial: fix port number changed after resumeMing Lei
This patch fixes the following bug: .plug ch341 usb serial port into a hub port; .ch341 driver bound to the device and /dev/ttyUSB0 comes .open /dev/ttyUSB0 by minicom and we can use the serial successfully .suspend the ch341 usb serial device(such as: echo suspend > power/level) .resume the ch341 usb serial device (such as: echo on > power/level) .new port /dev/ttyUSB1 comes ,and the original /dev/ttyUSB0 still exists, but is no longer usable by minicom The patch adds suspend and resume callback to ch341 usb driver to prevent it from unbinding during suspend. The /dev/ttyUSB0 is not released until being closed, so /dev/ttyUSB1 comes after resume, and the original /dev/ttyUSB0 is no longer usable by minicom. It is really a mess for a minicom user. This patch also adds the reset_resume callback to make it usable after resuming from STR or hibernation, for generally STR or hibernation will make the vbus of root-hub lost. Finally enable the driver's supports_autosuspend, for the device is in working order with it. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24USB: usb-serial ch341: support for DTR/RTS/CTSWerner Cornelius
Fixup of Werner Cornelius patch to the ch341 USB-serial driver, which adds: - support all baudrates, not just a hard-coded set - support for controlling DTR, RTS and CTS Features still missing: - character length other than 8 bits - parity settings - break control I adapted his patch for the new usb_serial API introduced in 2.6.25-git8 by Alan Cox on 22 July 2008. Non-compliance to the new API was a reason for refusing a similar patch from Tollef Fog Heen. Usage example by Tollef Fog Heen : TEMPer USB thermometer <http://err.no/src/TEMPer.c> Signed-off-by: Werner Cornelius <Werner.Cornelius@cornelius-consult.de> Signed-off-by: Boris Hajduk <boris@hajduk.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-22usb_serial: API all changeAlan Cox
USB serial likes to use port->tty back pointers for the real work it does and to do so without any actual locking. Unfortunately when you consider hangup events, hangup/parallel reopen or even worse hangup followed by parallel close events the tty->port and port->tty pointers are not guaranteed to be the same as port->tty is the active tty while tty->port is the port the tty may or may not still be attached to. So rework the entire API to pass the tty struct. For console cases we need to pass both for now. This shows up multiple drivers that immediately crash with USB console some of which have been fixed in the process. Longer term we need a proper tty as console abstraction Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-20USB: serial: ch341: New VID/PID for CH341 USB-serialMichael F. Robbins
Recent USB-serial devices using the WinChipHead CH340/CH341 chipset are being shipped with a new vendor/product ID code pair, but an otherwise identical device. (This is confirmed by looking at INF for the included Windows driver.) Patch is tested and working, both with new and old devices. Signed-off-by: Michael F. Robbins <mrobbins@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-02usb_serial: some coding style fixesAlan Cox
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-24USB: serial: remove unneeded number endpoints settingsGreg Kroah-Hartman
The usb-serial core no longer checks these fields so remove them from all of the individual drivers. They will be removed from the usb-serial core in a patch later in the series. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-25USB: ch341: fix termios handlingAlan Cox
The ch341 currently doesn't support most of the hardware setting. So to keep the termios data right we propogate the old termios hardware values back then encode the speed. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12USB: usb/serial/ch341.c: make 4 functions staticAdrian Bunk
This patch makes four needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12USB: Driver for CH341 USB-serial adaptorFrank A Kingswood
This patch implements a USB serial port driver for the Winchiphead CH341 USB-RS232 Converter. This chip also implements an IEEE 1284 parallel port, I2C and SPI, but that is not supported by the driver. Signed-off-by: Frank A Kingswood <frank@kingswood-consulting.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>