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path: root/drivers/usb/serial/pl2303.c
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2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-09-28USB: Add vendor / product ID to pl2303Wesley PA4WDH
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27usb serial: support Alcor Micro Corp. USB 2.0 TO RS-232 through pl2303 driverJohannes Steingraeber
Patch to add support for Alcor Micro Corp. USB 2.0 TO RS-232 converter. This patch adds VID and PID to pl2303.[ch], adds it to the "HORRIBLE HACK FOR PL2303" in usb-serial.c and also prevents cdc-acm to claim driving this device by blacklisting it in hid-core. Signed-off-by: Johannes Steingraeber <Jo_Stein@web.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: pl2303: cosmetic changes to quirkThiago Galesi
Cosmetic changes to quirk in pl2303_update_line_status Signed-off-by: Thiago Galesi <thiagogalesi@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: pl2303: reduce number of prototypesThiago Galesi
Reduce number of needed prototypes in Prolific pl2303 driver Signed-off-by: Thiago Galesi <thiagogalesi@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: pl2303: cosmetic changes to pl2303_buf_{clear, data_avail}Thiago Galesi
Changes the functions pl2303_buf_clear and pl2303_buf_data_avail for the purpose of keeping them under the 80 column limit, making them more similar to similar functions and making then simpler. Signed-off-by: Thiago Galesi <thiagogalesi@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: pl2303: remove 80-columns limit violations in pl2303 driverThiago Galesi
Fixes several lines that overrun 80 columns in Prolific pl2303 driver and cleans up some space usages in the function calls. Signed-off-by: Thiago Galesi <thiagogalesi@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: pl2303: Removes unneeded goto.Luiz Fernando N. Capitulino
Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-26[PATCH] USB: pl2303: removed support for OTi's DKU-5 clone cableTomasz Kazmierczak
This patch removes support for a clone of Nokia DKU-5 cable made by Ours Technology Inc, as it turned out that the cable does not use the pl2303 chip, but OTI-6858 chip which is not compatible with the pl2303. Signed-off-by: Tomasz Kazmierczak <tomek.fizyk@op.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-08-02USB: New USB ID for Belkin Serial AdapterKim Oldfield
Can you add the USB IDs for the Belkin USB Serial adapter (P/N F5U257) to the pl2303 driver in the Linux Kernel? Are you the appropriate person to approach for this? I recently purchased a Belkin USB Serial adapter (P/N F5U257) and found that it didn't work. After a bit of experimentation I found that it works with the pl2303 driver once the ID has been added. See attached patch to fix this. Also attached is the output from lsusb -v just in case you require any information from there. From: Kim Oldfield <luv@oldfield.wattle.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-12[PATCH] USB: move usb-serial.h to include/linux/usb/Greg Kroah-Hartman
USB serial outside of the kernel tree can not build properly due to usb-serial.h being buried down in the source tree. This patch moves the location of the file to include/linux/usb and fixes up all of the usb serial drivers to handle the move properly. Cc: Sergei Organov <osv@javad.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-12[PATCH] USB: Support for Susteen Datapilot Universal-2 cable in pl2303Matthew Meno
The Susteen Datapilot cable (http://www.susteen.com/productdetail/71/producthl/Notempty) has an internal pl2303 to communicate with a set of dummy connector-ends that connect to a variety of cell phones. I've found that it works right out of the box by simply adding the product/vendor id to the pl2303 driver. Signed-off-by: Matt Meno <mmeno@idealcorp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-12[PATCH] USB: Addition of vendor/product id pair for pl2303 driverPeter Moulder
Text from the back of the box, for your information/amusement: USB DATA CABLE FOR K700 Series The USB Cable is an ideal link between your mobile phone and PC. Employing the user-friendiy [sic] USB standard,its capacity for rapid data transfer enables functions such as synchronization of phone book and calendar,as well as Internet browsing via a modem-enabled phone.Autual [sic] connection speed is dependent on phone capacity. MADE IN CHINA From: Peter Moulder <Peter.Moulder@infotech.monash.edu.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-21[PATCH] USB: Syntax cleanup for pl2303 (trailing backslash)Pete Zaitcev
Remove the silly trailing backslash. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21[PATCH] USB serial: encapsulate schedule_work, remove double-callingPete Zaitcev
I'm going to throw schedule_work away, it's retarded. But for starters, let's have it encapsulated. Also, generic and whiteheat were both calling usb_serial_port_softint and scheduled work. Only one was necessary. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-27[PATCH] USB: add new iTegno usb CDMA 1x card support for pl2303Wang Jun
Add new iTegno usb CDMA 1x card (usbid '0eba:2080') support to pl2303 driver Signed-off-by: Wang Jun <wangjun1974@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-14[PATCH] USB: pl2303: added support for OTi's DKU-5 clone cableTomasz Kazmierczak
This patch adds support for a clone of Nokia DKU-5 cable made by Ours Technology Inc for Nokia phones with PopPort (Nokia 3100 and others). The cable uses PL2303 USB-to-serial converter from Prolific Technology Inc. Signed-off-by: Tomasz Kazmierczak <tomek.fizyk@op.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] USB: support for USB-to-serial cable from Speed Dragon MultimediaDick Streefland
The USB data cable for my Samsung GSM phone contains the USB-to-serial converter chip MS3303H from Speed Dragon Multimedia, Inc. that appears to be compatible with the PL2303 chip. The following patch adds support for this chip to the pl2303 driver. Signed-off-by: Dick Streefland <dick@streefland.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] USB: PL2303 and TIOCMIWAITJulian Bradfield
A while ago, I posted about TIOCMIWAIT not working with the PL2303 USB-serial adapter. After a brief exchange with Greg, I tracked this to a missing wake-up in the USB interrupt procedures. I got our systems staff to install the enclosed very simple patch to our 2.6.12 kernels, and it all works fine as expected. I guess this should also apply to the latest version and go into the mainstream. Apologies for the long delay in posting the result. The routine being patched is pl2303_update_line_status Signed-off-by: Julian Bradfield <jcb+luu@inf.ed.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20[PATCH] USB: kzalloc() conversion for rest of drivers/usbEric Sesterhenn
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-13[PATCH] USB: PL2303: Leadtek 9531 GPS-MouseChristian Lindner
The patch adds the USB ID (0413:2101) for the Leadtek GPS-Mouse 9531 to the driver pl2303. Signed-off-by: Christian Lindner <christian.lindner@gmx.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-31[PATCH] USB: add new pl2303 device idsDenis MONTERRAT
Signed-off-by: FALIPOU F Developer <fred.falipou@free.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-31[PATCH] USB: pl2303: Added support for CA-42 clone cableMartin Gingras
Added support for CA-42 clone cable (www.ca-42.com) Signed-off-by: Martin Gingras <martin.gingras@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-14[PATCH] remove unused tmp_buf_sem'sAdrian Bunk
tmp_buf_sem sems to be a common name for something completely unused... Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> ("usb portion") Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] TTY layer buffering revampAlan Cox
The API and code have been through various bits of initial review by serial driver people but they definitely need to live somewhere for a while so the unconverted drivers can get knocked into shape, existing drivers that have been updated can be better tuned and bugs whacked out. This replaces the tty flip buffers with kmalloc objects in rings. In the normal situation for an IRQ driven serial port at typical speeds the behaviour is pretty much the same, two buffers end up allocated and the kernel cycles between them as before. When there are delays or at high speed we now behave far better as the buffer pool can grow a bit rather than lose characters. This also means that we can operate at higher speeds reliably. For drivers that receive characters in blocks (DMA based, USB and especially virtualisation) the layer allows a lot of driver specific code that works around the tty layer with private secondary queues to be removed. The IBM folks need this sort of layer, the smart serial port people do, the virtualisers do (because a virtualised tty typically operates at infinite speed rather than emulating 9600 baud). Finally many drivers had invalid and unsafe attempts to avoid buffer overflows by directly invoking tty methods extracted out of the innards of work queue structs. These are no longer needed and all go away. That fixes various random hangs with serial ports on overflow. The other change in here is to optimise the receive_room path that is used by some callers. It turns out that only one ldisc uses receive room except asa constant and it updates it far far less than the value is read. We thus make it a variable not a function call. I expect the code to contain bugs due to the size alone but I'll be watching and squashing them and feeding out new patches as it goes. Because the buffers now dynamically expand you should only run out of buffering when the kernel runs out of memory for real. That means a lot of the horrible hacks high performance drivers used to do just aren't needed any more. Description: tty_insert_flip_char is an old API and continues to work as before, as does tty_flip_buffer_push() [this is why many drivers dont need modification]. It does now also return the number of chars inserted There are also tty_buffer_request_room(tty, len) which asks for a buffer block of the length requested and returns the space found. This improves efficiency with hardware that knows how much to transfer. and tty_insert_flip_string_flags(tty, str, flags, len) to insert a string of characters and flags For a smart interface the usual code is len = tty_request_buffer_room(tty, amount_hardware_says); tty_insert_flip_string(tty, buffer_from_card, len); More description! At the moment tty buffers are attached directly to the tty. This is causing a lot of the problems related to tty layer locking, also problems at high speed and also with bursty data (such as occurs in virtualised environments) I'm working on ripping out the flip buffers and replacing them with a pool of dynamically allocated buffers. This allows both for old style "byte I/O" devices and also helps virtualisation and smart devices where large blocks of data suddenely materialise and need storing. So far so good. Lots of drivers reference tty->flip.*. Several of them also call directly and unsafely into function pointers it provides. This will all break. Most drivers can use tty_insert_flip_char which can be kept as an API but others need more. At the moment I've added the following interfaces, if people think more will be needed now is a good time to say int tty_buffer_request_room(tty, size) Try and ensure at least size bytes are available, returns actual room (may be zero). At the moment it just uses the flipbuf space but that will change. Repeated calls without characters being added are not cumulative. (ie if you call it with 1, 1, 1, and then 4 you'll have four characters of space. The other functions will also try and grow buffers in future but this will be a more efficient way when you know block sizes. int tty_insert_flip_char(tty, ch, flag) As before insert a character if there is room. Now returns 1 for success, 0 for failure. int tty_insert_flip_string(tty, str, len) Insert a block of non error characters. Returns the number inserted. int tty_prepare_flip_string(tty, strptr, len) Adjust the buffer to allow len characters to be added. Returns a buffer pointer in strptr and the length available. This allows for hardware that needs to use functions like insl or mencpy_fromio. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-04[PATCH] USB: pl2303_update_line_status data length fixHorst Schirmeier
Minimum data length must be UART_STATE + 1, as data[UART_STATE] is being accessed for the new line_state. Although PL-2303 hardware is not expected to send data with exactly UART_STATE length, this keeps it on the safe side. Signed-off-by: Horst Schirmeier <horst@schirmeier.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-04[PATCH] USB: remove .owner field from struct usb_driverGreg Kroah-Hartman
It is no longer needed, so let's remove it, saving a bit of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-04[PATCH] USB: allow usb drivers to disable dynamic idsGreg Kroah-Hartman
This lets drivers, like the usb-serial ones, disable the ability to add ids from sysfs. The usb-serial drivers are "odd" in that they are really usb-serial bus drivers, not usb bus drivers, so the dynamic id logic will have to go into the usb-serial bus core for those drivers to get that ability. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-17[PATCH] USB: pl2303: updates pl2303_update_line_status()Luiz Fernando Capitulino
Updates pl2303_update_line_status() to handle X75 and SX1 Siemens mobiles Signed-off-by: Luiz Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-17[PATCH] USB: pl2303: adds new IDs.Luiz Fernando Capitulino
This patch adds two new Siemens mobiles IDs for the pl2303 driver. Signed-off-by: Luiz Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] USB Serial: remove driver version from a few driversGreg Kroah-Hartman
These numbers are pointless, as they have not been changed in _years_, so we should just remove them to stop pretending there is an actual "version number" for these drivers. This should also help reduce confusion when people try to ask for support of a specific driver version, as there has been no way to tell what they are talking about. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] USB Serial: move name to driver structureGreg Kroah-Hartman
This fixes up a lot of problems in sysfs with some of the usb serial drivers, they had incorrect driver names. Also saves a tiny ammount of memory. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] USB Serial: move old changelog comments out of source codeGreg Kroah-Hartman
Create a new file just for these things, as they just get in the way in the source files. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] USB Serial: get rid of the .owner field in usb_serial_driverGreg Kroah-Hartman
Don't duplicate something that's already in struct driver. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] USB Serial: rename usb_serial_device_type to usb_serial_driverGreg Kroah-Hartman
I'm tired of trying to explain why a "device_type" is really a driver. This better describes exactly what this structure is. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-12[PATCH] USB: PL2303: CA-42 Phone cableRobert Spanton
This patch adds the product ID and vendor ID for a Nokia CA-42 USB cable to the list of devices handled by the pl2303 driver. The patch is against 2.6.13. Signed-off-by: Robert Spanton <rds204@zepler.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-12[PATCH] drivers/usb: fix-up schedule_timeout() usageNishanth Aravamudan
Description: Use schedule_timeout_{,un}interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08[PATCH] USB: pl2303 driver, makes pl2303HX chip work correctlyDariusz M
This trivial patch makes pl2303 driver work correctly with pl2303HX chip. Apparently some bug in HX version of pl2303 makes the chip loose some transmitted bytes or stop working at all after reception of USB_REQ_CLEAR_FEATURE mesage. Logs generated by UsbSnoop application reveal that windows driver does not send this type of messages to the converter. From: "Dariusz M." <D.Marcinkiewicz@elka.pw.edu.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-18[PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULLJesper Juhl
Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*, there's no need to check a pointer for NULL before calling kfree() on it. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Index: gregkh-2.6/drivers/usb/class/audio.c ===================================================================
2005-04-18[PATCH] USB: pl2303 new vendor/model idsPeter Favrholdt
Please accept the attached patch which adds the vendorid 0x0745 and modelid 0x0001 (ID 0745:0001) "Syntech Information Co., Ltd." The device is an USB IR cradle for a barcode scanner (CPT-8001C) from Cipherlab. From: Peter Favrholdt <pfavr@mip.sdu.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -u kernel-source-2.6.11/drivers/usb/serial/pl2303.c ../kernel-source-2.6.11/drivers/usb/serial/pl2303.c
2005-04-18[PATCH] pl2303 - status lineFlavio Leitner
I'm attaching a patch to fix status when using Siemens X65 mobile. This mobile use first byte instead of normal UART_STATE byte. From: Flavio Leitner <fbl@conectiva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Index: gregkh-2.6/drivers/usb/serial/pl2303.c ===================================================================
2005-04-18[PATCH] pl2303 - unplug device.Flavio Leitner
It's possible to unplug usb device and do tiocmset() and tiocmget() without valid interface in pl2303 module. The patch below check this and return -ENODEV if interface was removed. From: Flavio Leitner <fbl@conectiva.com.br> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -purN linux-05-04-11/drivers/usb/serial/pl2303.c linux-05-04-11.usb/drivers/usb/serial/pl2303.c
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!